JP3763973B2 - DC power supply - Google Patents

Description

式（２）に式（３）を代入し、整理すると、

式（６）および式（７）より

となり、充電器は

にて選定しても、強制風冷による運転で蓄電池への均等充電必要容量を確保することが可能になることが判る。
【００１７】
また、第２の発明は充電器ユニットの整流回路部に複数台の送風手段を設ける。複数台の送風手段を配置するものではそのうちの１台が何らかの原因により停止しても、残り複数台が運転を継続することにより引き続き送風することが可能で、均等充電運転中に送風が中断する影響を一部分だけに限定することができる。
【００１８】
この場合も、望ましくは、整流回路部を強制風冷のもとにおくために均等充電運転の開始に合わせて複数台の送風手段を起動する。しかし、浮動充電運転の開始等に合わせて送風を始めてもよい。
【００１９】
さらに、第３の発明は充電器ユニットの整理回路部に複数台の送風手段に加えて複数台の予備用送風手段を設ける。
【００２０】
この複数台の予備用送風手段を配置するものでは、複数台の送風手段が何らかの原因で停止しても、予備用送風手段が直ちに起動し、引き続き送風することが可能になり、均等充電運転中に送風が不可能になるのを回避することができる。
【００２１】
この場合も、望ましくは、整流回路部を強制風冷のもとにおくために均等充電運転の開始に合わせて複数台の送風手段を起動する。しかし、浮動充電運転の開始等に合わせて送風を始めてもよい。
【００２２】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して詳細に説明する。図１において、配電盤１の遮断器１ａを介して交流電力の供給を受ける充電器ユニット２は遮断器３、変圧器４および整流回路部５を備えている。この整流回路部５の出力側電路から分岐した電路に遮断器６を介して蓄電池７が設けられている。また、整流回路部５の出力側電路にシリコンドロッパ回路８が設けられている。
【００２３】
さらに、整流回路部５は送風手段として働く冷却ファン１０を備えている。この冷却ファン１０は後に詳述される制御装置１１と接続されている。
【００２４】
図２に制御装置１１の詳細を示している。充電器運転信号ａはアンド回路２１およびアンド回路２２の入力端に与えられる。また、充電器運転選択切り換え器２３で選択される均等運転信号ｂはアンド回路２２の入力端に入力される。アンド回路２２の出力信号ｃは整流回路部５に備えられる冷却ファン１０の起動・停止用の冷却ファン運転制御回路２４に入力され、ここから冷却ファン運転確認信号ｄが出力される。
【００２５】
さらに、アンド回路２２の出力信号ｃは冷却ファン１０の停止等の異常を検知する異常検知回路２５に与えられ、ここで異常が検知されたとき、警報・表示回路２６に異常信号ｅが出力され、警報・表示回路２６での警報および表示により冷却ファン１０の異常が運転員に報知されるようになっている。
【００２６】
また、異常信号ｅはノット回路２７を介してアンド回路２８の入力端に入力され、冷却ファン運転確認信号ｄとの間で論理積条件が成立したとき、均等充電運転許可信号ｆが第１の充電器制御回路２９に与えられる。
【００２７】
さらに、第１の充電器制御回路２９から出力される均等充電運転信号ｇはノット回路３０を介してアンド回路２１に入力され、充電器運転信号ａとの間で論理積条件が成立したとき、浮動充電運転許可信号ｈが第２の充電器制御回路３１に与えられるようになっている。
【００２８】
本実施の形態は上記構成からなり、通常運転時、図示しない充電器ユニット２の操作器からの充電器運転信号ａがアンド回路２１およびアンド回路２２に入力されている。また、充電器運転選択切り換え器２３において浮動運転側が選択され、均等運転信号ｂは出力されない。このとき、アンド回路２２では均等運転信号ｂが入力されず、出力信号ｃは出力されないで、冷却ファン運転制御回路２４からの冷却ファン運転確認信号ｄは出力されず、第１の充電器制御回路２９から均等充電運転信号ｇが出力されないで、ノット回路３０から反転した信号が出力される。
【００２９】
このため、アンド回路２１で論理積条件が成立して浮動充電運転許可信号ｈが出力され、第２の充電器制御回路３１が動作して充電器ユニット２が自然風冷による浮動充電運転を続けることになる。
【００３０】
一方、浮動充電運転がある期間続くと、蓄電池７を構成する各単電池間で充電状態のバラツキが大きくなるために充電器ユニット２を均等充電運転に切り換える。充電器運転選択切り換え器２３を均等運転側に切り換えると、均等運転信号ｂが出力され、アンド回路２２で論理積条件が成立することで、出力信号ｃが出力され、冷却ファン運転制御回路２４が動作すると共に、冷却ファン１０の停止等の異常を検知する異常検知回路２５がある時限をもって検知を開始する。
【００３１】
冷却ファン１０の停止等の異常がない場合、異常検知回路２５から異常信号ｅは出力されないで、ノット回路２７から反転した信号が出力される。アンド回路２８には冷却ファン運転確認信号ｄが入力されており、論理積条件が成立することにより、そこから均等充電運転許可信号ｆが出力され、第１の充電器制御回路２９が動作する。このため、充電器ユニット２は冷却ファン１０が整流回路部５に多量の風を送る強制風冷による均等充電運転に移行する。
【００３２】
また、第１の充電器制御回路２９の動作により充電器均等運転信号ｇがノット回路３０に入力され、その出力信号が反転してアンド回路２１に入力され、このとき、浮動充電運転許可信号ｈが断たれ、第２の充電器制御回路３１の動作が停止する。
【００３３】
この均等充電運転中、何らかの原因により冷却ファン１０に異常が発生し、停止を強いられると、異常検知回路２５から異常信号ｅが出力され、ノット回路２７で出力信号が反転し、第１の充電器制御回路２９の動作が停止する。この結果、ノット回路３０で出力信号が反転し、第２の充電器制御回路３１が動作して充電器ユニット２は自然風冷による浮動充電運転に戻る。同時に、異常信号ｅが警報・表示回路２６に与えられて冷却ファン１０で発生した異常が運転員に知らされる。
【００３４】
このように本実施の形態によれば、均等充電運転時に充電器ユニットの整流回路部を強制風冷のもとにおくことができ、均等充電運転のための充電器容量の増大が回避されることで、充電器ユニットが大型化するのをくい止めることが可能になる。
【００３５】
さらに、本発明の他の実施の形態を説明する。図３において、直流電源装置は上記実施の形態のものと同様に構成される。冷却ファン１０は制御装置１２と接続されている。
【００３６】
この制御装置１２の詳細を図４に示している。充電器運転信号ａはアンド回路２１に入力されると共に、冷却ファン運転制御回路２４および異常検知回路２５に入力される。また、均等運転信号ｂはアンド回路２８の入力端に与えられるようになっている。これ以外の構成は上記実施の形態のものと同一である。
【００３７】
本実施の形態は上記構成からなり、通常運転時、図示しない充電器ユニット２の操作器からの充電器運転信号ａがアンド回路２１に入力されている。同じ充電器運転信号ａはそれぞれ冷却ファン運転制御回路２４および異常検知回路２５に入力され、冷却ファン運転制御回路２４が動作して冷却ファン１０が起動し、冷却ファン運転確認信号ｄが出力されると共に、冷却ファン１０の停止等の異常を検知する異常検知回路２５がある時限をもって検知を開始する。
【００３８】
また、充電器運転選択切り換え器２３において浮動運転側が選択され、均等運転信号ｂは出力されない。このとき、アンド回路２８では均等運転信号ｂが入力されず、論理積条件の不成立により均等充電運転許可信号ｆは出力されないで、第１の充電器制御回路２９は動作しない。このため、第１の充電器制御回路２９から均等充電運転信号ｇは出力されず、ノット回路３０から反転した信号が出力され、アンド回路２１で論理積条件が成立することにより浮動充電運転許可信号ｈが出力され、第２の充電器制御回路３１が動作する。この第２の充電器制御回路３１の動作により充電器ユニット２は浮動充電運転を続けることになる。
【００３９】
一方、浮動充電運転をある期間続けたとき、蓄電池７の各単電池間で充電状態のバラツキが大きくなるために充電器ユニット２を均等充電運転に切り換える。充電器運転選択切り換え器２３を均等運転側に切り換えると、均等運転信号ｂが出力され、アンド回路２８の入力端に加えられる。冷却ファン１０の停止等の異常がない場合、異常検知回路２５から異常信号ｅは出力されないで、ノット回路２７から反転した信号が出力される。
【００４０】
アンド回路２８において均等運転信号ｂが入力されると、冷却ファン運転確認信号ｄおよびノット回路２７の反転信号との間で論理積条件が成立することにより均等充電運転許可信号ｆが出力され、第１の充電器制御回路２９が動作する。この第１の充電器制御回路２９の動作により充電器ユニット２は冷却ファン１０が整流回路部５に多量の風を送る強制風冷による均等充電運転に移行する。
【００４１】
また、第１の充電制御回路２９から均等充電運転信号ｇがノット回路３０に入力され、その出力信号が反転してアンド回路２１に入力され、このとき、浮動充電運転許可信号ｈが断たれ、第２の充電器制御回路３１の動作が停止する。
【００４２】
本実施の形態によれば、均等充電運転時に充電器ユニットの整流回路部を強制風冷のもとにおくことができ、均等充電運転のための充電器容量の増大が回避されることで、充電器ユニットが大形化するのをくい止めることが可能になる。
【００４３】
また、冷却ファンを待機状態におくことができ、切り換えに伴うトラブルを確実に回避しつつ、浮動充電運転から均等充電運転に移行させることができる。
【００４４】
さらに、本発明の他の実施の形態を説明する。図５において、整流回路部５は送風手段として働く各々同等の能力を有する複数台の冷却ファン１０ａ、１０ｂ…１０ｎを備えている。各冷却ファン１０ａ、１０ｂ…１０ｎは制御装置１３と接続されている。
【００４５】
この制御装置１３の詳細を図６に示している。充電器運転信号ａは各アンド回路２１ａ、２１ｂ…２１ｎおよび各アンド回路２２ａ、２２ｂ…２２ｎの入力端に与えられる。充電器運転選択切り換え器２３ａ、２３ｂ…２３ｎで選択される均等運転信号ｂは各アンド回路２２ａ、２２ｂ…２２ｎの入力端に入力される。アンド回路２２ａ、２２ｂ…２２ｎの出力信号ｃは整流回路部５に備えられる各冷却ファン１０ａ、１０ｂ…１０ｎの起動・停止用の冷却ファン運転制御回路２４ａ、２４ｂ…２４ｎに入力され、ここから冷却ファン運転確認信号ｄがそれぞれ出力される。
【００４６】
さらに、各アンド回路２２ａ、２２ｂ…２２ｎの出力信号ｃは各冷却ファン１０ａ、１０ｂ…１０ｎの停止等の異常を検知する各異常検知回路２５ａ、２５ｂ…２５ｎに与えられ、ここで異常が検知されたとき、各警報・表示回路２６ａ、２６ｂ…２６ｎ異常信号ｅが出力され、警報・表示回路２６ａ、２６ｂ…２６ｎでの警報および表示により各冷却ファン１０ａ、１０ｂ…１０ｎの異常が運転員に報知されるようになっている。
【００４７】
また、異常信号ｅはノット回路２７ａ、２７ｂ…２７ｎを介して各アンド回路２８ａ、２８ｂ…２８ｎの入力端に入力され、冷却ファン運転確認信号ｄとの間で論理積条件が成立したとき、それぞれ均等充電運転許可信号ｆが第１の充電器制御回路２９ａ、２９ｂ…２９ｎに与えられる。さらに、第１の充電器制御回路２９ａ、２９ｂ…２９ｎから出力される均等充電運転信号ｇはノット回路３０ａ、３０ｂ…３０ｎを介して各アンド回路２１ａ、２１ｂ…２１ｎに入力され、充電器運転信号ａとの間で論理積条件が成立したとき、それぞれ浮動充電運転許可信号ｈが第２の充電器制御回路３１ａ、３１ｂ…３１ｎに与えられるようになっている。
【００４８】
本実施の形態は上記構成からなり、通常運転時、図示しない充電器ユニット２の操作器からの充電器運転信号ａが各アンド回路２１ａ、２１ｂ…２１ｎおよびアンド回路２２ａ、２２ｂ…２２ｎに入力されている。また、それぞれ充電器運転選択切り換え器２３ａ、２３ｂ…２３ｎにおいて、浮動運転側が選択され、均等運転信号ｂは出力されない。このとき、各アンド回路２２ａ、２２ｂ…２２ｎでは均等運転信号ｂが入力されず、出力信号ｃは出力されないで、各冷却ファン運転制御回路２４ａ、２４ｂ…２４ｎからの冷却ファン運転確認信号ｄは出力されず、第１の充電器制御回路２９ａ、２９ｂ…２９ｎから均等充電運転信号ｇが出力されないで、ノット回路３０ａ、３０ｂ…３０ｎから反転した信号が出力される。これにより各アンド回路２１ａ、２１ｂ…２１ｎで論理積条件が成立して浮動充電運転許可信号ｈが出力され、第２の充電器制御回路３１ａ、３１ｂ…３１ｎが動作して充電器ユニット２は自然風冷による浮動充電運転を続けることになる。
【００４９】
一方、浮動充電運転がある期間続くと、蓄電池７を構成する各単電池間で充電状態のバラツキが大きくなるために充電器ユニット２を均等充電運転に切り換える。充電器運転選択切り換え器２３ａ、２３ｂ…２３ｎを均等運転側に切り換えると、均等運転信号ｂが出力され、各アンド回路２２ａ、２２ｂ…２２ｎで論理積条件が成立することで、出力信号ｃが出力され、各冷却ファン運転制御回路２４ａ、２４ｂ…２４ｎが動作すると共に、各冷却ファン１０ａ、１０ｂ…１０ｎの停止等の異常を検知する異常検知回路２５ａ、２５ｂ…２５ｎがある時限をもって検知を開始する。
【００５０】
各冷却ファン１０ａ、１０ｂ…１０ｎで停止等の異常がない場合、異常検知回路２５ａ、２５ｂ…２５ｎから異常信号ｅは出力されないで、各ノット回路２７ａ、２７ｂ…２７ｎから反転した信号が出力される。各アンド回路２８ａ、２８ｂ…２８ｎには冷却ファン運転確認信号ｄが入力されており、論理積条件が成立することにより、そこから均等充電運転許可信号ｆが出力され、第１の充電器制御回路２９ａ、２９ｂ…２９ｎが動作する。このため、充電器ユニット２は各冷却ファン１０ａ、１０ｂ…１０ｎが整流回路部５に多量の風を送る強制風冷による均等充電運転に移行する。
【００５１】
また、第１の充電器制御回路２９ａ、２９ｂ…２９ｎの動作により均等充電運転信号ｇが各ノット回路３０ａ、３０ｂ…３０ｎに入力され、その出力信号が反転して各アンド回路２１ａ、２１ｂ…２１ｎに入力され、このとき浮動充電運転許可信号ｈが断たれ、第２の充電器制御回路３１ａ、３１ｂ…３１ｎの動作が停止する。
【００５２】
この均等充電運転中、何らかの原因により、たとえば冷却ファン１０ａに異常が発生し、停止を強いられると、異常検知回路２５ａから異常信号ｅが出力される。この異常信号ｅはノット回路２７ａに入力され、その出力信号が反転し、第１の充電器制御回路２９ａの動作が停止する。この結果、ノット回路３０ａで出力信号が反転し、第２の充電器制御回路３１ａが動作して冷却ファン１０ａが停止し、整流回路部５には風が送られず、その部分だけ自然風冷による浮動充電運転に戻る。同時に、異常信号ｅが警報・表示回路２６ａに与えられて冷却ファン１０ａで発生した異常が運転員に知らされる。この後、異常の原因を探り出し、素早く復旧させて冷却ファン１０ａを起動し、再度、均等充電運転に戻すようにする。
【００５３】
かくして、複数台の冷却ファン１０ａ、１０ｂ…１０ｎはすべての停止を免れることができ、均等充電運転中に送風が中断する影響を一部分だけに限定し、短時間のうちに均等充電運転を終了させることが可能になる。
【００５４】
本実施の形態によれば、均等充電運転時における充電器ユニットの整流回路部を強制風冷のもとにおくことができるほか、特に、均等充電運転中に送風が中断する影響を一部分だけに限定させることができ、短時間のうちに均等充電運転を終了させることが可能になる。
【００５５】
さらに、本発明の他の実施の形態を説明する。図７において、整流回路部５は送風手段として働く各々同等の能力を有する複数台の冷却ファン１０ａ、１０ｂ…１０ｎを備えている。各冷却ファン１０ａ、１０ｂ…１０ｎは制御装置１４と接続されている。
【００５６】
この制御装置１４の詳細を図８に示している。充電器運転信号ａは各アンド回路２１ａ、２１ｂ…２１ｎに入力されると共に、各冷却ファン運転制御回路２４ａ、２４ｂ…２４ｎおよび各異常検知回路２５ａ、２５ｂ…２５ｎに入力される。また、均等運転信号ｂは各アンド回路２８ａ、２８ｂ…２８ｎの入力端に与えられるようになっている。これ以外の構成は上記実施の形態（図６参照）のものと同一である。
【００５７】
本実施の形態は上記構成からなり、通常運転時、図示しない充電器ユニット２の操作器からの充電器運転信号ａが各アンド回路２１ａ、２１ｂ…２１ｎに入力されている。同じ充電器運転信号ａはそれぞれ冷却ファン運転制御回路２４ａ、２４ｂ…２４ｎおよび異常検知回路２５ａ、２５ｂ…２５ｎに入力され、冷却ファン運転制御回路２４ａ、２４ｂ…２４ｎが動作して各冷却ファン１０ａ、１０ｂ…１０ｎが起動し、冷却ファン運転確認信号ｄが出力されると共に、冷却ファン１０ａ、１０ｂ…１０ｎの停止等の異常を検知する各異常検知回路２５ａ、２５ｂ…２５ｎである時限をもって検知を開始する。
【００５８】
また、それぞれ充電器運転選択切り換え器２３ａ、２３ｂ…２３ｎにおいて浮動運転側が選択され、均等運転信号ｂは出力されない。このとき、各アンド回路２８ａ、２８ｂ…２８ｎでは均等運転信号ｂが入力されず、論理積条件の不成立により均等充電運転許可信号ｆは出力されないで、第１の充電器制御回路２９ａ、２９ｂ…２９ｎは動作しない。
【００５９】
このため、第１の充電器制御回路２９ａ、２９ｂ…２９ｎから均等充電運転信号ｇは出力されず、各ノット回路３０ａ、３０ｂ…３０ｎから反転した信号が出力され、各アンド回路２１ａ、２１ｂ…２１ｎで論理積条件が成立して浮動充電運転許可信号ｈが出力され、第２の充電器制御回路３１ａ、３１ｂ…３１ｎが動作する。この第２の充電器制御回路３１ａ、３１ｂ…３１ｎの動作により充電器ユニット２は浮動充電運転を続けることになる。
【００６０】
一方、浮動充電運転をある期間続けたとき、蓄電池７の各単電池間で充電状態のバラツキが大きくなるために充電器ユニット２を均等充電運転に切り換える。充電器運転選択切り換え器２３ａ、２３ｂ…２３ｎを均等運転側に切り換えると、均等運転信号ｂが出力され、各アンド回路２８ａ、２８ｂ…２８ｎの入力端に加えられる。各冷却ファン１０ａ、１０ｂ…１０ｎの停止等の異常がない場合、各異常検知回路２５ａ、２５ｂ…２５ｎから異常信号ｅは出力されないで、各ノット回路２７ａ、２７ｂ…２７ｎから反転した信号が出力される。
【００６１】
アンド回路２８ａ、２８ｂ…２８ｎにおいて均等運転信号ｂが入力されると、冷却ファン運転確認信号ｄとの間で論理積条件が成立することにより均等充電運転許可信号ｆが出力され、第１の充電器制御回路２９ａ、２９ｂ…２９ｎが動作する。この第１の充電器制御回路２９ａ、２９ｂ…２９ｎの動作により充電器ユニット２は各冷却ファン１０ａ、１０ｂ…１０ｎが整流回路部５に多量の風を送る強制風冷による均等充電運転に移行する。
【００６２】
また、第１の充電器制御回路２９ａ、２９ｂ…２９ｎから均等充電運転信号ｇが各ノット回路３０ａ、３０ｂ…３０ｎに入力され、その出力信号が反転してアンド回路２１ａ、２１ｂ…２１ｎに入力され、このとき浮動充電運転許可信号ｈが断たれ、第２の充電器制御回路３１ａ、３１ｂ…３１ｎの動作が停止する。
【００６３】
この均等充電運転中、何らかの原因により、たとえば冷却ファン１０ａに異常が発生し、停止を強いられると、検知回路２５ａから異常信号ｅが出力される。この異常信号ｅはノット回路２７ａに入力され、その出力信号が反転し、第１の充電器制御回路２９ａの動作が停止する。この結果、ノット回路３０ａで出力信号が反転し、第２の充電器制御回路３１ａが動作して冷却ファン１０ａが停止し、整流回路部５には風が送られず、その部分だけ自然風冷による浮動充電運転に戻る。
【００６４】
同時に、異常信号ｅが警報・表示回路２６ａに与えられて冷却ファン１０ａで発生した異常が運転員に知らされる。この後、異常の原因を探り出し、素早く復旧させて冷却ファン１０ａを起動し、再度均等充電運転に戻すようにする。
【００６５】
かくして、複数台の冷却ファン１０ａ、１０ｂ…１０ｎはすべての停止を免れることができ、均等充電運転中に送風が中断する影響を一部分だけに限定し、短時間のうちに均等充電運転を終了させることが可能になる。
【００６６】
本実施の形態によれば、均等充電運転時における充電器ユニットを強制風冷のもとにおくことができるほか、特に、均等充電運転中に送風が中断する影響を一部分だけに限定させることができ、短時間のうちに均等充電運転を終了させることが可能になる。
【００６７】
また、各冷却ファンを待機状態におくことができ、切り換えに伴うトラブルを確実に回避しつつ、浮動充電運転から均等充電運転に移行させることができる。
【００６８】
さらに、本発明の他の実施の形態を説明する。図９において、整流回路部５は各々同等の能力を有する複数台の常用冷却ファン１０ａ、１０ｂ…１０ｎを備えると共に、各々同等の能力を有する複数台の予備用冷却ファン１５ａ、１５ｂ…１５ｎを備えている。これらの常用冷却ファン１０ａ、１０ｂ…１０ｎおよび予備用冷却ファン１５ａ、１５ｂ…１５ｎは制御装置１６と接続されている。
【００６９】
さらに、制御装置１６の詳細を図１０に示している。アンド回路２２の出力信号ｃは冷却ファン運転制御回路２４および異常検知回路２５と共に、アンド回路３２の入力端に与えられる。また、異常検知回路２５からの異常信号ｅがアンド回路３２に入力され、出力信号ｃとの間で論理積条件が成立したとき、予備機運転信号ｉが予備機運転制御回路３３および予備機異常検知回路３４に出力されるようになっている。
【００７０】
さらに、冷却ファン運転制御回路２４からの冷却ファン運転確認信号ｄおよび予備機運転制御回路３３からの予備機運転確認信号ｄ´はオア回路３５を介してアンド回路２８の入力端に入力される。また、予備機異常検知回路３４からの予備機異常信号ｅ´がノット回路２７を介してアンド回路２８の入力端に入力され、予備機運転確認信号ｄ´との間で論理積条件が成立したとき、均等充電運転許可信号ｆが第１の充電器制御回路２９に与えられるようになっている。これ以外の構成は上記実施の形態（図２参照）のものと同一である。
【００７１】
本実施の形態は上記構成からなり、通常運転時、図示しない充電器ユニット２の操作器からの充電器運転信号ａがアンド回路２１およびアンド回路２２に入力されている。また、充電器運転選択切り換え器２３において浮動運転側が選択され、均等運転信号ｂは出力されない。このとき、アンド回路２２で均等運転信号ｂが入力されず、出力信号ｃは出力されないで、冷却ファン運転制御回路２４からの冷却ファン運転確認信号ｄは出力されず、第１の充電器制御回路２９から均等充電運転信号ｇが出力されないで、ノット回路３０から反転した信号が出力される。これによりアンド回路２１で論理積条件が成立して浮動充電運転許可信号ｈが出力され、第２の充電器制御回路３１が動作して充電器ユニット２は自然風冷による浮動充電運転を続けることになる。
【００７２】
一方、浮動充電運転がある期間続くと、蓄電池７を構成する各単電池間で充電状態のバラツキが大きくなるために充電器ユニット２を均等充電運転に切り換える。充電器運転選択切り換え器２３を均等運転側に切り換えると、均等運転信号ｂが出力され、アンド回路２２で論理積条件が成立することで、出力信号ｃが出力され、冷却ファン運転制御回路２４が動作すると共に、各常用冷却ファン１０ａ、１０ｂ…１０ｎの停止等の異常を検知する異常検知回路２５がある時限をもって検知を開始する。
【００７３】
各常用冷却ファン１０ａ、１０ｂ…１０ｎで停止等の異常がない場合、異常検知回路２５から異常信号ｃは出力されないで、ノット回路２７から反転した信号が出力される。アンド回路２８には冷却ファン運転確認信号ｄが入力されており、論理積条件が成立することによりそこから均等充電運転許可信号ｆが出力され、第１の充電器制御回路２９が動作する。このため、充電器ユニット２は各常用冷却ファン１０ａ、１０ｂ…１０ｎが整流回路部５に多量の風を送る強制風冷による均等充電運転に移行する。
【００７４】
また、第１の充電器制御回路２９の動作により均等充電運転信号ｇがノット回路３０に入力され、その出力信号が反転してアンド回路２１に入力され、このとき、浮動充電運転許可信号ｈが断たれ、第２の充電器制御回路３１の動作が停止する。
【００７５】
この均等充電運転中、何らかの原因により常用冷却ファン１０ａ、１０ｂ…１０ｎに異常が発生し、一部が停止を強いられると、異常検知回路２５から異常信号ｅが出力され、アンド回路３２に入力される。このとき、アンド回路３２には出力信号ｃが与えられており、異常信号ｅが入力されることで、論理積条件が成立し、予備機運転信号ｉが予備機運転制御回路３３に入力され、予備用冷却ファン１５ａ、１５ｂ…１５ｎが起動する。このとき、予備機運転制御回路３３から予備機運転確認信号ｄ´が出力され、オア回路３５を通してアンド回路２８に入力される。同じ予備機運転信号ｉは予備機異常検知回路３４に入力され、予備機異常検知回路３４がある時限をもって検知を開始する。
【００７６】
各予備起用冷却ファン１５ａ、１５ｂ…１５ｎで停止等の異常がない場合、予備機異常検知回路３４から異常信号ｅ´は出力されないで、ノット回路２７から反転した信号が出力される。アンド回路２８ではノット回路２７からの反転信号で予備機運転確認信号ｄ´との間で論理積条件が成立し、均等充電運転許可信号ｆが出力され、第１の充電器制御回路２９が動作する。このため、各常用冷却ファン１０ａ、１０ｂ…１０ｎに代わり、各予備用冷却ファン１５ａ、１５ｂ…１５ｎが整流回路部５に多量の風を送る強制風冷による均等充電運転が引き続き保たれる。
【００７７】
一方、常用冷却ファン１０ａ、１０ｂ…１０ｎでの異常の発生時、異常検知回路２５からの異常信号ｅが警報・表示回路２６に与えられて常用冷却ファン１０ａ、１０ｂ…１０ｎで発生した異常が運転員に知らされる。この後、異常の原因を探り出し、素早く復旧させて常用冷却ファン１０ａ、１０ｂ…１０ｎを起動し、再度、均等充電運転に戻すようにする。
【００７８】
なお、予備用冷却ファン１５ａ、１５ｂ…１５ｎで停止等の異常があったとき、予備機異常検知回路３４から異常信号ｃが出力され、ノット回路２７の出力信号が反転し、均等充電運転許可信号ｆが断たれ、第１の充電器制御回路２９の動作が停止し、充電器ユニット２は自然風冷による浮動充電運転に戻る。
【００７９】
かくして、常用冷却ファン１０ａ、１０ｂ…１０ｎが運転を停止したときも、予備用冷却ファン１５ａ、１５ｂ…１５ｎが直ちに起動し、均等充電運転中に送風が不可能な状態に陥るのを防ぐことができる。
【００８０】
本実施の形態によれば、均等充電運転時に充電器ユニットの整流回路部を強制風冷のもとにおくことができるほか、特に、均等充電運転中に送風が不可能になるのを回避することができ、短時間のうちに均等充電運転を終了させることが可能になる。
【００８１】
さらに、本発明の他の実施の形態を説明する。図１１において、整流回路部５は各々同等の能力を有する複数台の常用冷却ファン１０ａ、１０ｂ…１０ｎを備えると共に、各々同等の能力を有する複数台の予備用冷却ファン１５ａ、１５ｂ…１５ｎを備えている。これらの常用冷却ファン１０ａ、１０ｂ…１０ｎおよび予備用冷却ファン１５ａ、１５ｂ…１５ｎは制御装置１７と接続されている。
【００８２】
さらに、制御装置１７の詳細を図１２に示している。充電器運転信号ａはアンド回路２１、冷却ファン運転制御回路２４、異常検知回路２５およびアンド回路３２の入力端に与えられる。また、異常検知回路２５からの異常信号ｅがアンド回路３２に入力され、充電器運転信号ａとの間で論理積条件が成立したとき、予備機運転信号ｉが予備機運転制御回路３３および予備機異常検知回路３４に与えられるようになっている。
【００８３】
さらに、冷却ファン運転制御回路２４からの冷却ファン運転確認信号ｄおよび予備機運転制御回路３３からの予備機運転確認信号ｄ´はオア回路３５を介してアンド回路２８に入力される。また、予備機異常検知回路３４からの予備機異常信号ｅ´がノット回路２７を介してアンド回路２８の入力端に入力され、均等運転信号ｂおよび予備機運転確認信号ｄ´との間で論理積条件が成立したとき、均等充電運転許可信号ｆが第１の充電器制御回路２９に与えられるようになっている。これ以外の構成は上記実施の形態（図４参照）のものと同一である。
【００８４】
本実施の形態は上記構成からなり、通常運転時、図示しない充電器ユニット２の操作器からの充電器運転信号ａはアンド回路２１およびアンド回路３２に入力されている。同じ充電器運転信号ａはそれぞれ冷却ファン運転制御回路２４および異常検知回路２５に入力され、冷却ファン運転制御回路２４が動作して各常用冷却ファン１０ａ、１０ｂ…１０ｎが起動し、冷却ファン運転確認信号ｄが出力されると共に、常用冷却ファン１０ａ、１０ｂ…１０ｎの停止等の異常を検知する異常検知回路２５がある時限をもって検知を開始する。
【００８５】
また、充電器運転選択切り換え器２３において浮動運転側が選択され、均等運転信号ｂは出力されない。このとき、アンド回路２８では均等運転信号ｂが入力されず、論理積条件の不成立により均等充電運転許可信号ｆは出力されないで、第１の充電器制御回路２９は動作しない。このため、第１の充電器制御回路２９から均等充電運転信号ｇは出力されず、ノット回路３０から反転した信号が出力され、アンド回路２１で論理積条件が成立して浮動充電運転許可信号ｈが出力され、第２の充電器制御回路３１が動作する。この第２の充電器制御回路３１の動作により充電器ユニット２は自然風冷による浮動充電運転を続けることになる。
【００８６】
一方、浮動充電運転をある期間続けたとき、蓄電池７の各単電池間で充電状態のバラツキが大きくなるために充電器ユニット２を均等充電運転に切り換える。充電器運転選択切り換え器２３を均等運転側に切り換えると、均等運転信号ｂが出力され、アンド回路２８の入力端に加えられる。各常用冷却ファン１０ａ、１０ｂ…１０ｎの停止等の異常がない場合、異常検知回路２５から異常信号ｅは出力されないで、ノット回路２７から反転した信号が出力される。アンド回路２８において均等運転信号ｂが入力されると、冷却ファン運転確認信号ｄおよびノット回路２７の反転信号との間で論理積条件が成立することにより均等充電運転許可信号ｆが出力され、第１の充電器制御回路２９が動作する。この第１の充電器制御回路２９の動作により充電器ユニット２は各常用冷却ファン１０ａ、１０ｂ…１０ｎが整流回路部５に多量の風を送る強制風冷による均等充電運転に移行する。
【００８７】
また、第１の充電器制御回路２９から均等充電運転信号ｇがノット回路３０に入力され、その出力信号が反転してアンド回路２１に入力され、このとき浮動充電運転許可信号ｈが断たれ、第２の充電器制御回路３１の動作が停止する。
【００８８】
この均等充電運転中、何らかの原因により常用冷却ファン１０ａ、１０ｂ…１０ｎに異常が発生し、一部が停止を強いられると、異常検知回路２５から異常信号ｅが出力され、アンド回路３２に入力される。このとき、アンド回路３２には出力信号ｃが与えられており、異常信号ｅが入力されることで、論理積条件が成立し、予備機運転信号ｉが予備機運転制御回路３３に入力され、予備用冷却ファン１５ａ、１５ｂ…１５ｎが起動する。このとき、予備機運転制御回路３３から予備機運転確認信号ｄ´が出力され、オア回路３５を通してアンド回路２８に入力される。同じ予備機運転信号ｉは予備機異常検知回路３４に入力され、予備機異常検知回路３４がある時限をもって検知を開始する。
【００８９】
各予備用冷却ファン１５ａ、１５ｂ…１５ｎで停止等の異常がない場合、予備機異常検知回路３４から異常信号ｅ´は出力されないで、ノット回路２７から反転した信号が出力される。アンド回路２８ではノット回路２７からの反転信号、均等運転信号ｂおよび予備機運転確認信号ｄ´との間で論理積条件が成立し、均等充電運転許可信号ｆが出力され、第１の充電器制御回路２９が動作する。このため、各常用冷却ファン１０ａ、１０ｂ…１０ｎに代わり、各予備用冷却ファン１５ａ、１５ｂ…１５ｎが整流回路部５に多量の風を送る強制風冷による均等充電運転が引き続き保たれる。
【００９０】
一方、常用冷却ファン１０ａ、１０ｂ…１０ｎでの異常発生時、異常検知回路２５からの異常信号ｅが警報・表示回路２６に与えられて常用冷却ファン１０ａ、１０ｂ…１０ｎで発生した異常が運転員に知らされる。この後、異常の原因を探り出し、素早く復旧させて常用冷却ファン１０ａ、１０ｂ…１０ｎを起動し、再度、均等充電運転に戻すようにする。
【００９１】
なお、予備用冷却ファン１５ａ、１５ｂ…１５ｎで停止等の異常があったとき、予備機異常検知回路３４から異常信号ｅ´が出力され、ノット回路２７の出力信号が反転し、均等充電運転許可信号ｆが断たれ、第１の充電器制御回路２９の動作が停止し、充電器ユニット２は自然風冷によ浮動充電運転に戻る。
【００９２】
かくして、常用冷却ファン１０ａ、１０ｂ…１０ｎが運転を停止したときも予備用冷却ファン１５ａ、１５ｂ…１５ｎが直ちに起動し、均等充電運転中に送風が不可能な状態に陥るのを防ぐことができる。
【００９３】
本実施の形態によれば、均等充電運転時に充電器ユニットの整流回路部を強制風冷のもとにおくことができるほか、特に、均等充電運転中に送風が不可能になるのを回避することができ、短時間のうちに均等充電運転を終了させることが可能になる。
【００９４】
また、各常用冷却ファンを待機状態におくことができ、切り換えに伴うトラブルを確実に回避しつつ、浮動充電運転から均等充電運転に移行させることが可能になる。
【００９５】
【発明の効果】
以上説明したように本発明は充電器ユニットの整流回路部に単一ないし複数台の送風手段を設けているので、均等充電運転時に整流回路部を強制風冷のもとにおくことができ、均等充電運転のための充電器容量の増大が回避されることで、充電器ユニットが大形化するのを抑制することが可能になる。
【図面の簡単な説明】
【図１】本発明による直流電源装置の実施の形態を示す系統図。
【図２】図１の制御装置を示す回路図。
【図３】本発明の他の実施の形態を示す系統図。
【図４】図３の制御装置を示す回路図。
【図５】本発明の他の実施の形態を示す系統図。
【図６】図５の制御装置を示す回路図。
【図７】本発明の他の実施の形態を示す系統図。
【図８】図７の制御装置を示す回路図。
【図９】本発明の他の実施の形態を示す系統図。
【図１０】図９の制御装置を示す回路図。
【図１１】本発明の他の実施の形態を示す系統図。
【図１２】図１１の制御装置を示す回路図。
【図１３】従来の直流電源装置を示す系統図。
【符号の説明】
２ 充電器ユニット
５ 整流回路部
７ 蓄電池
１０、１０ａ、１０ｂ、１０ｎ 冷却ファン
１１、１２、１３、１４、１６、１７ 制御装置
１５ａ、１５ｂ、１５ｎ 予備用冷却ファン
２４、２４ａ、２４ｂ、２４ｎ 冷却ファン運転制御回路
２５、２５ａ、２５ｂ、２５ｎ 異常検知回路
２９、２９ａ、２９ｂ、２９ｎ 第１の充電器制御回路
３１、３１ａ、３１ｂ、３１ｎ 第２の充電器制御回路[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a DC power supply device used for supplying DC power to an in-house DC load in, for example, thermal power and nuclear power plants.
[0002]
[Prior art]
The main power source of the in-house DC power system of the power plant is one that uses a stationary lead-acid battery. In this case, a natural air-cooled charger is used in combination with the storage battery for the purpose of floating charge and equal charge to the storage battery and power supply to the DC load when the in-house AC power source is healthy. An example of a DC power supply system configured by combining both devices is shown in FIG.
[0003]
The charger unit 2 that receives the supply of AC power through the circuit breaker 1a in the AC power distribution board 1 includes a circuit breaker 3, a transformer 4, and a rectifier circuit unit 5. In the rectifier circuit unit 5, the AC power is converted to DC power. Converted. Here, the obtained DC power is supplied to the storage battery 7 via the circuit breaker 6 so that the storage battery 7 is charged. Further, the charger unit 2 includes a silicon dropper circuit 8 through which desired DC power is supplied from the load-side power distribution circuit unit 9 to the in-house DC load.
[0004]
Normally, the storage battery 7 is float-charged with a voltage output from the rectifier circuit unit 5 controlled by a control circuit (not shown) in the charger unit 2, and the intermittent intermittent discharge due to the self-discharge of the storage battery 7 and the load fluctuation during floating is compensated. It has been broken. Further, the DC power of the rectifier circuit unit 5 is supplied to the load-side power distribution circuit unit 9 by bypassing the silicon dropper and closing the electromagnetic contactor constituting the silicon dropper circuit 8 by a control circuit (not shown) during floating charging. It is like that.
[0005]
On the other hand, when only floating charging is continued, the variation in the state of charge between the single cells constituting the storage battery 7 increases. For this reason, even charging is performed once every 3 to 6 months, and adjustment is made so that the variation in the filling state does not increase between the single cells.
[0006]
[Problems to be solved by the invention]
By the way, in recent years, digital control systems have been adopted in power generation plants in order to realize more desirable operation management with an increase in plant unit capacity. A direct current power source is indispensable for maintaining good control stability of the digital control system, and the installed capacity of the direct current power source is constantly increasing. For example, in the latest nuclear power plant, adoption of a 700-800 A class charger is being studied.
[0007]
Generally, the capacity of a DC100V charger is limited to about 400A for a self-cooling single-machine six-phase rectifier circuit. In the latest plant, two sets of self-cooled single-machine six-phase rectifier circuits are connected in parallel, and the self-cooling charger unit Has been made up.
[0008]
In general, the capacity of such a charger unit must be determined in consideration of the capacity required for the equal charge operation in addition to the power supply capacity for the normal load. For this reason, about 1/10 to 1/20 of the storage battery capacity to be charged is added to the capacity of the charger unit as the capacity required during the equal charge operation. Therefore, it is inevitable that the apparatus becomes larger as the capacity of the charger unit increases, and it becomes difficult to secure an installation space corresponding to this enlargement.
[0009]
SUMMARY OF THE INVENTION An object of the present invention is to provide a DC power supply device that effectively suppresses an increase in the size of a charger unit by avoiding an increase in charger capacity for a uniform charge operation.
[0010]
[Means for Solving the Problems]
1st invention provides a ventilation means in the rectifier circuit part of a charger unit.
[0011]
In general, in a charger unit using a thyristor element, operation by forced air cooling is always more advantageous (2 to 5 times) than operation by natural air cooling in terms of capacity selection. In the capacity selection, the load capacity of the DC power supply system and the capacity required for the equal charge for the storage battery are usually considered, but the ratio of both is roughly as follows.
[0012]
Power supply load capacity of DC power supply system / equal charge required capacity to storage battery = 1.0 to 1.2
Here, the capacity required for the equal charge to the storage battery is about 10 to 20 times the design storage battery capacity, whereas the capacity required for the floating charge to the storage battery is about 1/1000 or less of the design storage battery capacity. It is.
[0013]
For this reason, the capacity of the charger is calculated by considering the power supply load capacity and the floating charge required capacity without considering the uniform charge required capacity when the natural air cooling method is used, and the charger is charged equally with the power supply load capacity. When it is necessary to simultaneously bear the capacity, the natural air cooling method is switched to the forced air cooling method.
[0014]
In the present invention, in order to realize the operation by forced air cooling, the air blowing means is arranged in the rectifier circuit portion of the charging panel unit.
[0015]
Desirably, the air blowing means is activated in accordance with the start of the equal charge operation in order to place the rectifier circuit section under forced air cooling. However, the blowing may be started at the start of the floating charging operation.
[0016]
The advantage of operation by forced air cooling is described by rough calculation.
Charger natural wind cooling capacity = DC power supply system power supply load capacity + storage battery required floating charge capacity (1)
Charger forced air-cooling capacity = DC power supply load capacity + Capacity required for uniform charge to storage battery (2)
If the power supply load capacity of the DC power supply system / the required capacity for equal charge to the storage battery = 1.2,
Capacity required for uniform charge to storage battery = feeding load capacity of DC power supply system / 1.2 (3)
Temporarily, the capacity required for the floating charge to the storage battery = design storage battery capacity / 1000,
If the required capacity for equal charge to the storage battery = design storage battery capacity / 10,
Floating charge required capacity for storage battery = equal charge required capacity for storage battery / 100 (4)
It becomes.
From Formula (3) and Formula (4)
Floating charge required capacity for the storage battery = (DC power supply system feeding load capacity / 1.2) / 100 (5)
Substituting equation (5) into equation (1) and rearranging,

Substituting equation (3) into equation (2) and rearranging,

From Equation (6) and Equation (7)

And the charger is

It can be seen that it is possible to secure the required uniform charge capacity to the storage battery by the operation by forced air cooling.
[0017]
In the second invention, a plurality of air blowing means are provided in the rectifier circuit portion of the charger unit. Even if one of them stops due to some reason, it is possible to continue blowing by continuing the operation, and the blowing is interrupted during the equal charging operation. The influence can be limited to only a part.
[0018]
Also in this case, desirably, a plurality of air blowing means are activated in accordance with the start of the equal charge operation in order to place the rectifier circuit section under forced air cooling. However, the blowing may be started in accordance with the start of the floating charging operation.
[0019]
Furthermore, in the third aspect of the present invention, a plurality of preliminary air blowing means are provided in addition to the plurality of air blowing means in the arrangement circuit portion of the charger unit.
[0020]
In the case where the plurality of spare air blowing means are arranged, even if the plurality of air blowing means are stopped for some reason, the spare air blowing means can be started immediately and can continue to be blown. It is possible to prevent the air from becoming impossible.
[0021]
Also in this case, desirably, a plurality of air blowing means are activated in accordance with the start of the equal charge operation in order to place the rectifier circuit section under forced air cooling. However, the blowing may be started in accordance with the start of the floating charging operation.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, a charger unit 2 that receives supply of AC power through a circuit breaker 1 a of a switchboard 1 includes a circuit breaker 3, a transformer 4, and a rectifier circuit unit 5. A storage battery 7 is provided via a circuit breaker 6 in an electric circuit branched from the output-side electric circuit of the rectifier circuit unit 5. Further, a silicon dropper circuit 8 is provided in the output side electric circuit of the rectifier circuit unit 5.
[0023]
Furthermore, the rectifier circuit unit 5 includes a cooling fan 10 that functions as a blowing means. The cooling fan 10 is connected to a control device 11 described in detail later.
[0024]
FIG. 2 shows details of the control device 11. The charger operation signal a is given to the input terminals of the AND circuit 21 and the AND circuit 22. The equal operation signal b selected by the charger operation selection switching unit 23 is input to the input terminal of the AND circuit 22. The output signal c of the AND circuit 22 is input to a cooling fan operation control circuit 24 for starting / stopping the cooling fan 10 provided in the rectifier circuit unit 5, and a cooling fan operation confirmation signal d is output therefrom.
[0025]
Further, the output signal c of the AND circuit 22 is given to an abnormality detection circuit 25 that detects an abnormality such as a stop of the cooling fan 10. When an abnormality is detected here, an abnormality signal e is output to the alarm / display circuit 26. An alarm and display in the alarm / display circuit 26 notifies the operator of an abnormality in the cooling fan 10.
[0026]
The abnormal signal e is input to the input terminal of the AND circuit 28 via the knot circuit 27, and when the logical product condition is established with the cooling fan operation confirmation signal d, the equal charge operation permission signal f is the first. It is given to the charger control circuit 29.
[0027]
Furthermore, the equal charge operation signal g output from the first charger control circuit 29 is input to the AND circuit 21 via the knot circuit 30, and when the logical product condition is established with the charger operation signal a, A floating charging operation permission signal h is supplied to the second charger control circuit 31.
[0028]
The present embodiment is configured as described above. During normal operation, a charger operation signal a from an operator of the charger unit 2 (not shown) is input to the AND circuit 21 and the AND circuit 22. Further, the floating operation side is selected in the charger operation selection switching unit 23, and the equal operation signal b is not output. At this time, the AND circuit 22 does not receive the equal operation signal b, does not output the output signal c, does not output the cooling fan operation confirmation signal d from the cooling fan operation control circuit 24, and does not output the first charger control circuit. 29, the equal charge operation signal g is not output, and an inverted signal is output from the knot circuit 30.
[0029]
For this reason, a logical product condition is established in the AND circuit 21 and the floating charging operation permission signal h is output, the second charger control circuit 31 operates, and the charger unit 2 continues the floating charging operation by natural air cooling. It will be.
[0030]
On the other hand, if the floating charging operation continues for a certain period, the battery unit 2 is switched to the equal charging operation because the variation in the charging state increases between the single cells constituting the storage battery 7. When the charger operation selection switching device 23 is switched to the equal operation side, the equal operation signal b is output, the logical product condition is satisfied in the AND circuit 22, the output signal c is output, and the cooling fan operation control circuit 24 is While operating, the detection is started at a certain time when there is an abnormality detection circuit 25 that detects an abnormality such as a stop of the cooling fan 10.
[0031]
When there is no abnormality such as a stop of the cooling fan 10, the abnormality signal e is not output from the abnormality detection circuit 25 and an inverted signal is output from the knot circuit 27. A cooling fan operation confirmation signal d is input to the AND circuit 28. When the logical product condition is satisfied, an equal charge operation permission signal f is output therefrom, and the first charger control circuit 29 operates. For this reason, the charger unit 2 shifts to a uniform charging operation by forced air cooling in which the cooling fan 10 sends a large amount of wind to the rectifier circuit unit 5.
[0032]
Further, the charger equal operation signal g is input to the knot circuit 30 by the operation of the first charger control circuit 29, the output signal is inverted and input to the AND circuit 21, and at this time, the floating charge operation permission signal h Is cut off, and the operation of the second charger control circuit 31 is stopped.
[0033]
During this equal charge operation, if an abnormality occurs in the cooling fan 10 for some reason and it is forced to stop, an abnormality signal e is output from the abnormality detection circuit 25, the output signal is inverted by the knot circuit 27, and the first charging is performed. The operation of the controller control circuit 29 stops. As a result, the output signal is inverted in the knot circuit 30, the second charger control circuit 31 operates, and the charger unit 2 returns to the floating charging operation by natural air cooling. At the same time, an abnormality signal e is given to the alarm / display circuit 26 to notify the operator of the abnormality occurring in the cooling fan 10.
[0034]
Thus, according to the present embodiment, the rectifier circuit portion of the charger unit can be placed under forced air cooling during the equal charge operation, and an increase in the charger capacity for the equal charge operation is avoided. Thus, it is possible to prevent the charger unit from becoming large.
[0035]
Furthermore, another embodiment of the present invention will be described. In FIG. 3, the DC power supply device is configured in the same manner as in the above embodiment. The cooling fan 10 is connected to the control device 12.
[0036]
Details of the control device 12 are shown in FIG. The charger operation signal a is input to the AND circuit 21 and also input to the cooling fan operation control circuit 24 and the abnormality detection circuit 25. Further, the equal operation signal b is supplied to the input terminal of the AND circuit 28. The other configuration is the same as that of the above embodiment.
[0037]
The present embodiment is configured as described above, and a charger operation signal a from an operator of the charger unit 2 (not shown) is input to the AND circuit 21 during normal operation. The same charger operation signal a is input to the cooling fan operation control circuit 24 and the abnormality detection circuit 25, and the cooling fan operation control circuit 24 operates to start the cooling fan 10 and output the cooling fan operation confirmation signal d. At the same time, the detection is started at a certain time when there is an abnormality detection circuit 25 for detecting an abnormality such as a stop of the cooling fan 10.
[0038]
Further, the floating operation side is selected in the charger operation selection switching unit 23, and the equal operation signal b is not output. At this time, the equal operation signal b is not input in the AND circuit 28, the equal charge operation permission signal f is not output due to the failure of the logical product condition, and the first charger control circuit 29 does not operate. For this reason, the equal charging operation signal g is not output from the first charger control circuit 29, but the inverted signal is output from the knot circuit 30, and the AND circuit 21 satisfies the logical product condition, so that the floating charging operation permission signal is output. h is output, and the second charger control circuit 31 operates. By the operation of the second charger control circuit 31, the charger unit 2 Is floating Dynamic charging operation will continue.
[0039]
On the other hand, when the floating charging operation is continued for a certain period, the charging unit 2 is switched to the equal charging operation because the variation in the charging state increases between the single cells of the storage battery 7. When the charger operation selection switch 23 is switched to the equal operation side, the equal operation signal b is output and applied to the input terminal of the AND circuit 28. When there is no abnormality such as a stop of the cooling fan 10, the abnormality signal e is not output from the abnormality detection circuit 25 and an inverted signal is output from the knot circuit 27.
[0040]
When the equal operation signal b is input to the AND circuit 28, an equal charge operation permission signal f is output when a logical product condition is established between the cooling fan operation confirmation signal d and the inverted signal of the knot circuit 27, and 1 charger control circuit 29 operates. By the operation of the first charger control circuit 29, the charger unit 2 shifts to a uniform charging operation by forced air cooling in which the cooling fan 10 sends a large amount of wind to the rectifier circuit unit 5.
[0041]
Further, the equal charge operation signal g is input from the first charge control circuit 29 to the knot circuit 30, the output signal is inverted and input to the AND circuit 21, and at this time, the floating charge operation permission signal h is cut off, The operation of the second charger control circuit 31 is stopped.
[0042]
According to the present embodiment, the rectifier circuit unit of the charger unit can be placed under forced air cooling during the equal charge operation, and an increase in the charger capacity for the equal charge operation is avoided, It is possible to prevent the charger unit from becoming large.
[0043]
In addition, the cooling fan can be placed in a standby state, and the shift from the floating charge operation to the equal charge operation can be performed while reliably avoiding troubles associated with switching.
[0044]
Furthermore, another embodiment of the present invention will be described. In FIG. 5, the rectifier circuit unit 5 includes a plurality of cooling fans 10a, 10b,. Each of the cooling fans 10a, 10b... 10n is connected to the control device 13.
[0045]
Details of the control device 13 are shown in FIG. The charger operation signal a is given to the input terminals of the AND circuits 21a, 21b,... 21n and the AND circuits 22a, 22b,. The equal operation signal b selected by the charger operation selection switching devices 23a, 23b,... 23n is input to the input terminals of the AND circuits 22a, 22b,. The output signal c of the AND circuits 22a, 22b... 22n is input to the cooling fan operation control circuits 24a, 24b... 24n for starting / stopping the cooling fans 10a, 10b. A fan operation confirmation signal d is output.
[0046]
Furthermore, the output signal c of each AND circuit 22a, 22b ... 22n is given to each abnormality detection circuit 25a, 25b ... 25n which detects abnormality such as a stop of each cooling fan 10a, 10b ... 10n, where abnormality is detected. When the alarm / display circuits 26a, 26b,... 26n are output, an abnormality signal e is output, and the alarm / display of the alarm / display circuits 26a, 26b,. It has come to be.
[0047]
The abnormal signal e is input to the input terminals of the AND circuits 28a, 28b,... 28n via the knot circuits 27a, 27b,. The equal charging operation permission signal f is given to the first charger control circuits 29a, 29b,. Further, the equal charging operation signal g output from the first charger control circuits 29a, 29b,... 29n is input to the AND circuits 21a, 21b,. When a logical product condition is established with a, a floating charge operation permission signal h is supplied to the second charger control circuits 31a, 31b,.
[0048]
The present embodiment is configured as described above, and during normal operation, a charger operation signal a from an operator of the charger unit 2 (not shown) is input to each of the AND circuits 21a, 21b... 21n and the AND circuits 22a, 22b. ing. Further, in each of the charger operation selection switching units 23a, 23b,... 23n, the floating operation side is selected, and the equal operation signal b is not output. At this time, the equal operation signal b is not input and the output signal c is not output in each AND circuit 22a, 22b ... 22n, and the cooling fan operation confirmation signal d from each cooling fan operation control circuit 24a, 24b ... 24n is output. The equal charging operation signal g is not output from the first charger control circuits 29a, 29b,... 29n, and inverted signals are output from the knot circuits 30a, 30b,. As a result, a logical product condition is established in each AND circuit 21a, 21b,... 21n and a floating charge operation permission signal h is output, the second charger control circuits 31a, 31b,. It will continue floating charging operation by air cooling.
[0049]
On the other hand, if the floating charging operation continues for a certain period, the battery unit 2 is switched to the equal charging operation because the variation in the charging state increases between the single cells constituting the storage battery 7. When the charger operation selection switching units 23a, 23b,... 23n are switched to the equal operation side, an equal operation signal b is output, and an AND signal 22a, 22b,. Each of the cooling fan operation control circuits 24a, 24b,... 24n is operated, and the abnormality detection circuits 25a, 25b,... 25n that detect an abnormality such as a stop of the cooling fans 10a, 10b,. .
[0050]
When there is no abnormality such as a stop in each of the cooling fans 10a, 10b,... 10n, an abnormality signal e is not output from the abnormality detection circuits 25a, 25b,. . Each AND circuit 28a, 28b,... 28n receives a cooling fan operation confirmation signal d. When the AND condition is satisfied, an equal charge operation permission signal f is output therefrom, and the first charger control circuit. 29a, 29b... 29n operate. For this reason, the charger unit 2 shifts to a uniform charging operation by forced air cooling in which each cooling fan 10a, 10b,.
[0051]
Further, the equal charging operation signal g is input to each knot circuit 30a, 30b,... 30n by the operation of the first charger control circuits 29a, 29b,... 29n, and the output signal is inverted to each AND circuit 21a, 21b. At this time, the floating charging operation permission signal h is cut off, and the operations of the second charger control circuits 31a, 31b,.
[0052]
During this equal charging operation, for example, if an abnormality occurs in the cooling fan 10a due to some cause and the stop is forced, an abnormality signal e is output from the abnormality detection circuit 25a. The abnormal signal e is input to the knot circuit 27a, the output signal is inverted, and the operation of the first charger control circuit 29a is stopped. As a result, the output signal is inverted in the knot circuit 30a, the second charger control circuit 31a is operated, the cooling fan 10a is stopped, the wind is not sent to the rectifier circuit unit 5, and only that portion is cooled naturally. Return to floating charging operation. At the same time, an abnormality signal e is given to the alarm / display circuit 26a to notify the operator of the abnormality occurring in the cooling fan 10a. After this, the cause of the abnormality is found, quickly recovered, the cooling fan 10a is activated, and the equal charging operation is resumed.
[0053]
Thus, the plurality of cooling fans 10a, 10b,..., 10n can avoid all the stops, limit the influence of the interruption of the air blowing during the equal charge operation to only a part, and finish the equal charge operation within a short time. It becomes possible.
[0054]
According to the present embodiment, the rectifier circuit portion of the charger unit during the equal charging operation can be placed under forced air cooling, and in particular, the influence of the interruption of the air blow during the equal charging operation is limited to a part. It is possible to limit, and it becomes possible to finish the equal charging operation within a short time.
[0055]
Furthermore, another embodiment of the present invention will be described. In FIG. 7, the rectifier circuit unit 5 includes a plurality of cooling fans 10a, 10b,. Each of the cooling fans 10a, 10b... 10n is connected to the control device 14.
[0056]
Details of the control device 14 are shown in FIG. The charger operation signal a is input to the AND circuits 21a, 21b,... 21n, and is input to the cooling fan operation control circuits 24a, 24b, 24n and the abnormality detection circuits 25a, 25b,. Further, the equal operation signal b is given to the input terminals of the AND circuits 28a, 28b,. The other configuration is the same as that of the above embodiment (see FIG. 6).
[0057]
The present embodiment is configured as described above, and during normal operation, a charger operation signal a from an operator of the charger unit 2 (not shown) is input to each AND circuit 21a, 21b,. The same charger operation signal a is input to the cooling fan operation control circuits 24a, 24b ... 24n and the abnormality detection circuits 25a, 25b ... 25n, respectively, and the cooling fan operation control circuits 24a, 24b ... 24n are operated so that each cooling fan 10a, 10b... 10n is activated, a cooling fan operation confirmation signal d is output, and detection is started with a time limit that is each abnormality detection circuit 25a, 25b... 25n that detects an abnormality such as a stop of the cooling fans 10a, 10b. To do.
[0058]
Further, the floating operation side is selected in each of the charger operation selection switching units 23a, 23b,... 23n, and the equal operation signal b is not output. At this time, the equal operation signal b is not input to the AND circuits 28a, 28b,... 28n, and the equal charge operation permission signal f is not output because the logical product condition is not satisfied, and the first charger control circuits 29a, 29b,. Does not work.
[0059]
Therefore, the equal charging operation signal g is not output from the first charger control circuits 29a, 29b,... 29n, and inverted signals are output from the knot circuits 30a, 30b,... 30n, and the AND circuits 21a, 21b,. The AND condition is satisfied and the floating charge operation permission signal h is output, and the second charger control circuits 31a, 31b,. The charger unit 2 is operated by the operation of the second charger control circuits 31a, 31b, ... 31n. Is floating Dynamic charging operation will continue.
[0060]
On the other hand, when the floating charging operation is continued for a certain period, the charging unit 2 is switched to the equal charging operation because the variation in the charging state increases between the single cells of the storage battery 7. When the charger operation selection switching devices 23a, 23b... 23n are switched to the equal operation side, an equal operation signal b is output and applied to the input terminals of the AND circuits 28a, 28b. If there is no abnormality such as stopping of each cooling fan 10a, 10b,... 10n, the abnormality signal e is not output from each abnormality detection circuit 25a, 25b,... 25n, and an inverted signal is output from each knot circuit 27a, 27b. The
[0061]
When the equal operation signal b is input to the AND circuits 28a, 28b,... 28n, the equal charge operation permission signal f is output when the logical product condition is established with the cooling fan operation confirmation signal d, and the first charge is performed. .., 29n are operated. The operation of the first charger control circuits 29a, 29b,... 29n causes the charger unit 2 to shift to a uniform charging operation by forced air cooling in which each cooling fan 10a, 10b,. .
[0062]
Further, the equal charging operation signal g is input to the knot circuits 30a, 30b,... 30n from the first charger control circuits 29a, 29b,... 29n, and the output signals are inverted and input to the AND circuits 21a, 21b,. At this time, the floating charging operation permission signal h is cut off, and the operation of the second charger control circuits 31a, 31b... 31n is stopped.
[0063]
During this equal charging operation, for example, when an abnormality occurs in the cooling fan 10a due to some cause and the stop is forced, an abnormality signal e is output from the detection circuit 25a. The abnormal signal e is input to the knot circuit 27a, the output signal is inverted, and the operation of the first charger control circuit 29a is stopped. As a result, the output signal is inverted in the knot circuit 30a, the second charger control circuit 31a is operated, the cooling fan 10a is stopped, the wind is not sent to the rectifier circuit unit 5, and only that portion is cooled naturally. Return to floating charging operation.
[0064]
At the same time, an abnormality signal e is given to the alarm / display circuit 26a to notify the operator of the abnormality occurring in the cooling fan 10a. After that, the cause of the abnormality is searched for, quickly recovered, the cooling fan 10a is activated, and the equal charging operation is resumed.
[0065]
Thus, the plurality of cooling fans 10a, 10b,..., 10n can avoid all the stops, limit the influence of the interruption of the air blowing during the equal charge operation to only a part, and finish the equal charge operation within a short time. It becomes possible.
[0066]
According to the present embodiment, the charger unit during the uniform charging operation can be placed under forced air cooling, and in particular, the influence of the interruption of the air blowing during the uniform charging operation can be limited to only a part. It is possible to finish the uniform charging operation in a short time.
[0067]
In addition, each cooling fan can be put in a standby state, and the shift from the floating charge operation to the equal charge operation can be performed while reliably avoiding the trouble associated with switching.
[0068]
Furthermore, another embodiment of the present invention will be described. 9, the rectifier circuit unit 5 includes a plurality of normal cooling fans 10a, 10b,..., 10n each having an equivalent capacity, and a plurality of spare cooling fans 15a, 15b,. ing. These normal cooling fans 10a, 10b... 10n and spare cooling fans 15a, 15b... 15n are connected to the control device 16.
[0069]
Further, details of the control device 16 are shown in FIG. The output signal c of the AND circuit 22 is given to the input terminal of the AND circuit 32 together with the cooling fan operation control circuit 24 and the abnormality detection circuit 25. When the abnormality signal e from the abnormality detection circuit 25 is input to the AND circuit 32 and the logical product condition is established with the output signal c, the spare machine operation signal i is sent to the spare machine operation control circuit 33 and the spare machine abnormality. It is output to the detection circuit 34.
[0070]
Further, the cooling fan operation confirmation signal d from the cooling fan operation control circuit 24 and the spare machine operation confirmation signal d ′ from the spare machine operation control circuit 33 are input to the input terminal of the AND circuit 28 via the OR circuit 35. Further, the spare machine abnormality signal e ′ from the spare machine abnormality detection circuit 34 is input to the input terminal of the AND circuit 28 via the knot circuit 27, and the logical product condition is established with the spare machine operation confirmation signal d ′. At this time, the equal charging operation permission signal f is supplied to the first charger control circuit 29. The other configuration is the same as that of the above embodiment (see FIG. 2).
[0071]
The present embodiment is configured as described above. During normal operation, a charger operation signal a from an operator of the charger unit 2 (not shown) is input to the AND circuit 21 and the AND circuit 22. Further, the floating operation side is selected in the charger operation selection switching unit 23, and the equal operation signal b is not output. At this time, the equal operation signal b is not input by the AND circuit 22, the output signal c is not output, the cooling fan operation confirmation signal d from the cooling fan operation control circuit 24 is not output, and the first charger control circuit 29, the equal charge operation signal g is not output, and an inverted signal is output from the knot circuit 30. As a result, a logical product condition is established in the AND circuit 21 and the floating charging operation permission signal h is output, the second charger control circuit 31 operates, and the charger unit 2 continues the floating charging operation by natural air cooling. become.
[0072]
On the other hand, if the floating charging operation continues for a certain period, the battery unit 2 is switched to the equal charging operation because the variation in the charging state increases between the single cells constituting the storage battery 7. When the charger operation selection switching device 23 is switched to the equal operation side, the equal operation signal b is output, the logical product condition is satisfied in the AND circuit 22, the output signal c is output, and the cooling fan operation control circuit 24 is While operating, the detection is started at a certain time when there is an abnormality detection circuit 25 that detects an abnormality such as a stop of each of the regular cooling fans 10a, 10b,.
[0073]
When there is no abnormality such as a stop in each of the regular cooling fans 10a, 10b... 10n, the abnormality signal c is not output from the abnormality detection circuit 25, but an inverted signal is output from the knot circuit 27. The AND circuit 28 receives the cooling fan operation confirmation signal d. When the AND condition is satisfied, the equal charge operation permission signal f is output therefrom, and the first charger control circuit 29 operates. For this reason, the charger unit 2 shifts to a uniform charging operation by forced air cooling in which each of the regular cooling fans 10a, 10b... 10n sends a large amount of wind to the rectifier circuit unit 5.
[0074]
Further, by the operation of the first charger control circuit 29, the equal charge operation signal g is input to the knot circuit 30, the output signal thereof is inverted and input to the AND circuit 21, and at this time, the floating charge operation permission signal h is As a result, the operation of the second charger control circuit 31 is stopped.
[0075]
During this equal charge operation, if an abnormality occurs in the service cooling fans 10a, 10b... 10n for some reason and some of them are forced to stop, an abnormality signal e is output from the abnormality detection circuit 25 and input to the AND circuit 32. The At this time, an output signal c is given to the AND circuit 32, and when the abnormal signal e is inputted, the logical product condition is established, and the spare machine operation signal i is inputted to the spare machine operation control circuit 33, Preliminary cooling fans 15a, 15b ... 15n are activated. At this time, the spare machine operation confirmation signal d ′ is output from the spare machine operation control circuit 33 and is input to the AND circuit 28 through the OR circuit 35. The same spare machine operation signal i is input to the spare machine abnormality detection circuit 34, and detection is started at a certain time limit.
[0076]
When there is no abnormality such as a stop in each of the preliminary activating cooling fans 15a, 15b... 15n, the abnormal signal e ′ is not output from the auxiliary machine abnormality detection circuit 34, but an inverted signal is output from the knot circuit 27. In the AND circuit 28, an AND condition is established between the inverted signal from the knot circuit 27 and the spare machine operation confirmation signal d ', the equal charge operation permission signal f is output, and the first charger control circuit 29 operates. To do. For this reason, instead of the regular cooling fans 10a, 10b,..., 10n, the standby cooling fans 15a, 15b,.
[0077]
On the other hand, when an abnormality occurs in the normal cooling fans 10a, 10b,... 10n, an abnormality signal e from the abnormality detection circuit 25 is given to the alarm / display circuit 26, and the abnormality generated in the normal cooling fans 10a, 10b,. Informed by the staff. Thereafter, the cause of the abnormality is found out, quickly recovered, the service cooling fans 10a, 10b,... 10n are activated, and the operation is returned to the equal charge operation again.
[0078]
When there is an abnormality such as a stop in the auxiliary cooling fans 15a, 15b ... 15n, an abnormality signal c is output from the auxiliary machine abnormality detection circuit 34, the output signal of the knot circuit 27 is inverted, and an equal charging operation permission signal is output. f is cut off, the operation of the first charger control circuit 29 is stopped, and the charger unit 2 returns to the floating charging operation by natural air cooling.
[0079]
Thus, even when the regular cooling fans 10a, 10b,... 10n stop operating, the spare cooling fans 15a, 15b,... 15n are immediately activated, and it is possible to prevent the air from being blown out during the equal charge operation. it can.
[0080]
According to the present embodiment, the rectifier circuit portion of the charger unit can be placed under forced air cooling during the equal charge operation, and in particular, it is possible to avoid air blow during the equal charge operation. This makes it possible to finish the uniform charging operation in a short time.
[0081]
Furthermore, another embodiment of the present invention will be described. In FIG. 11, the rectifier circuit unit 5 includes a plurality of normal cooling fans 10a, 10b,... 10n each having an equivalent capacity, and a plurality of spare cooling fans 15a, 15b,. ing. These normal cooling fans 10 a, 10 b,... 10 n and spare cooling fans 15 a, 15 b,.
[0082]
Further, details of the control device 17 are shown in FIG. The charger operation signal a is given to the input terminals of the AND circuit 21, the cooling fan operation control circuit 24, the abnormality detection circuit 25, and the AND circuit 32. Further, when the abnormality signal e from the abnormality detection circuit 25 is input to the AND circuit 32 and the logical product condition is established with the charger operation signal a, the spare machine operation signal i is sent to the spare machine operation control circuit 33 and the spare machine operation signal 33. The machine abnormality detection circuit 34 is provided.
[0083]
Further, the cooling fan operation confirmation signal d from the cooling fan operation control circuit 24 and the spare machine operation confirmation signal d ′ from the spare machine operation control circuit 33 are input to the AND circuit 28 via the OR circuit 35. Further, the spare machine abnormality signal e ′ from the spare machine abnormality detection circuit 34 is input to the input terminal of the AND circuit 28 via the knot circuit 27 and is logically output between the equal operation signal b and the spare machine operation confirmation signal d ′. When the product condition is satisfied, the equal charge operation permission signal f is supplied to the first charger control circuit 29. The other configuration is the same as that of the above embodiment (see FIG. 4).
[0084]
The present embodiment is configured as described above. During normal operation, a charger operation signal a from an operator of the charger unit 2 (not shown) is input to the AND circuit 21 and the AND circuit 32. The same charger operation signal a is input to the cooling fan operation control circuit 24 and the abnormality detection circuit 25, respectively, and the cooling fan operation control circuit 24 operates to activate each of the regular cooling fans 10a, 10b,. While the signal d is output, the detection is started at a certain time limit when there is an abnormality detection circuit 25 that detects an abnormality such as a stop of the service cooling fans 10a, 10b,.
[0085]
Further, the floating operation side is selected in the charger operation selection switching unit 23, and the equal operation signal b is not output. At this time, the equal operation signal b is not input in the AND circuit 28, the equal charge operation permission signal f is not output due to the failure of the logical product condition, and the first charger control circuit 29 does not operate. For this reason, the equal charging operation signal g is not output from the first charger control circuit 29, but the inverted signal is output from the knot circuit 30, and the AND condition is satisfied in the AND circuit 21, and the floating charging operation permission signal h is satisfied. Is output, and the second charger control circuit 31 operates. By the operation of the second charger control circuit 31, the charger unit 2 continues the floating charging operation by natural air cooling.
[0086]
On the other hand, when the floating charging operation is continued for a certain period, the charging unit 2 is switched to the equal charging operation because the variation in the charging state increases between the single cells of the storage battery 7. When the charger operation selection switch 23 is switched to the equal operation side, the equal operation signal b is output and applied to the input terminal of the AND circuit 28. When there is no abnormality such as stopping of each of the regular cooling fans 10a, 10b,... 10n, the abnormality signal e is not output from the abnormality detection circuit 25 and the inverted signal is output from the knot circuit 27. When the equal operation signal b is input to the AND circuit 28, an equal charge operation permission signal f is output when a logical product condition is established between the cooling fan operation confirmation signal d and the inverted signal of the knot circuit 27, and 1 charger control circuit 29 operates. By the operation of the first charger control circuit 29, the charger unit 2 shifts to a uniform charging operation by forced air cooling in which each of the regular cooling fans 10a, 10b... 10n sends a large amount of wind to the rectifier circuit unit 5.
[0087]
Further, the equal charging operation signal g is input to the knot circuit 30 from the first charger control circuit 29, the output signal is inverted and input to the AND circuit 21, and at this time, the floating charging operation permission signal h is cut off, The operation of the second charger control circuit 31 is stopped.
[0088]
During this equal charge operation, if an abnormality occurs in the service cooling fans 10a, 10b... 10n for some reason and some of them are forced to stop, an abnormality signal e is output from the abnormality detection circuit 25 and input to the AND circuit 32. The At this time, an output signal c is given to the AND circuit 32, and when the abnormal signal e is inputted, the logical product condition is established, and the spare machine operation signal i is inputted to the spare machine operation control circuit 33, Preliminary cooling fans 15a, 15b ... 15n are activated. At this time, the spare machine operation confirmation signal d ′ is output from the spare machine operation control circuit 33 and is input to the AND circuit 28 through the OR circuit 35. The same spare machine operation signal i is input to the spare machine abnormality detection circuit 34, and detection is started at a certain time limit.
[0089]
When there is no abnormality such as a stop in each of the preliminary cooling fans 15a, 15b,... 15n, the abnormality signal e ′ is not output from the auxiliary machine abnormality detection circuit 34, but an inverted signal is output from the knot circuit 27. In the AND circuit 28, a logical product condition is established among the inverted signal from the knot circuit 27, the equal operation signal b, and the spare machine operation confirmation signal d ', and an equal charge operation permission signal f is output. The control circuit 29 operates. For this reason, instead of the regular cooling fans 10a, 10b,..., 10n, the standby cooling fans 15a, 15b,.
[0090]
On the other hand, when an abnormality occurs in the normal cooling fans 10a, 10b,... 10n, an abnormality signal e from the abnormality detection circuit 25 is given to the alarm / display circuit 26, and the abnormality generated in the normal cooling fans 10a, 10b,. To be informed. Thereafter, the cause of the abnormality is found out, quickly recovered, the service cooling fans 10a, 10b,... 10n are activated, and the operation is returned to the equal charge operation again.
[0091]
When there is an abnormality such as a stop in the standby cooling fans 15a, 15b ... 15n, the abnormality signal e 'is output from the auxiliary machine abnormality detection circuit 34, the output signal of the knot circuit 27 is inverted, and the equal charge operation permission is permitted. The signal f is cut off, the operation of the first charger control circuit 29 is stopped, and the charger unit 2 returns to the floating charging operation by natural air cooling.
[0092]
Thus, even when the normal cooling fans 10a, 10b... 10n stop operating, the standby cooling fans 15a, 15b... 15n are immediately started, and it is possible to prevent the air from being blown out during the equal charge operation. .
[0093]
According to the present embodiment, the rectifier circuit portion of the charger unit can be placed under forced air cooling during the equal charge operation, and in particular, it is possible to avoid air blow during the equal charge operation. This makes it possible to finish the uniform charging operation in a short time.
[0094]
In addition, each of the regular cooling fans can be put in a standby state, and it is possible to shift from the floating charge operation to the equal charge operation while reliably avoiding troubles associated with switching.
[0095]
【The invention's effect】
As described above, since the present invention is provided with a single or a plurality of air blowing means in the rectifier circuit portion of the charger unit, the rectifier circuit portion can be kept under forced air cooling during the equal charge operation, By avoiding an increase in the capacity of the charger for the equal charge operation, it is possible to prevent the charger unit from becoming large.
[Brief description of the drawings]
FIG. 1 is a system diagram showing an embodiment of a DC power supply device according to the present invention.
FIG. 2 is a circuit diagram showing the control device of FIG. 1;
FIG. 3 is a system diagram showing another embodiment of the present invention.
4 is a circuit diagram showing the control device of FIG. 3;
FIG. 5 is a system diagram showing another embodiment of the present invention.
6 is a circuit diagram showing the control device of FIG. 5;
FIG. 7 is a system diagram showing another embodiment of the present invention.
8 is a circuit diagram showing the control device of FIG. 7;
FIG. 9 is a system diagram showing another embodiment of the present invention.
10 is a circuit diagram showing the control device of FIG. 9;
FIG. 11 is a system diagram showing another embodiment of the present invention.
12 is a circuit diagram showing the control device of FIG. 11;
FIG. 13 is a system diagram showing a conventional DC power supply device.
[Explanation of symbols]
2 Charger unit
5 Rectifier circuit
7 Storage battery
10, 10a, 10b, 10n Cooling fan
11, 12, 13, 14, 16, 17 Control device
15a, 15b, 15n Spare cooling fan
24, 24a, 24b, 24n Cooling fan operation control circuit
25, 25a, 25b, 25n Abnormality detection circuit
29, 29a, 29b, 29n First charger control circuit
31, 31a, 31b, 31n Second charger control circuit

Claims (6)

A charger unit having a rectifier circuit unit for converting AC power, a storage battery connected to the rectifier circuit unit of the charger unit, and charging and storing DC power supplied from the rectifier circuit unit in each unit cell; A direct current is provided in the rectifier circuit portion of the charger unit, and the rectifier circuit portion is operated at the time of the equal charge operation of the charger unit to operate the blower means and perform the equal charge operation under forced air cooling. In power supply,
A blower means operation control circuit for starting and stopping the blower means, an abnormality detection circuit for detecting an abnormality of the blower means, and an equal charge operation under forced air cooling of the rectifier circuit portion of the charger unit. A control device having a first charger control circuit to perform, and a second charger control circuit for performing a floating charging operation of the rectifier circuit unit under natural wind cooling,
During the equal charge operation, when both the blower means start confirmation signal from the blower means operation control circuit and the non-abnormal signal from the abnormality detection circuit are provided, an equal charge operation permission signal is output to output the first charge. The DC power supply device is characterized in that the charger control circuit is operated and the floating charging operation permission signal to the first charger control circuit is turned off to shift from the floating charging operation to the equal charging operation. A charger unit having a rectifier circuit unit for converting AC power into DC power, and connected to the rectifier circuit unit of the charger unit, the DC power supplied from the rectifier circuit unit is charged and stored in each cell. A plurality of blowing means are provided in the rectifier circuit portion of the storage battery and the charger unit, and during the equal charging operation of the charger unit, the plurality of blowing means are operated, and the rectifier circuit portion is forced-cooled. In the DC power supply device that performs the equal charge operation originally,
A blowing means operation control circuit for individually starting and stopping the blowing means, an abnormality detection circuit for individually detecting an abnormality of the blowing means, and the rectifier circuit portion of the charger unit under forced air cooling Providing a control device having a first charger control circuit that individually performs equal charge operation and a second charger control circuit that individually performs floating charge operation of the rectifier circuit unit under natural air cooling;
During the equal charge operation, when both the blower means start confirmation signal from the blower means operation control circuit and the non-abnormal signal from the abnormality detection circuit are provided, an equal charge operation permission signal is output to output the first charge. The DC power supply device is characterized in that the charger control circuit is operated and the floating charging operation permission signal to the first charger control circuit is turned off to shift from the floating charging operation to the equal charging operation. A charger unit having a rectifier circuit unit for converting AC power, a storage battery connected to the rectifier circuit unit of the charger unit, and charging and storing DC power supplied from the rectifier circuit unit in each unit cell; A direct current is provided in the rectifier circuit portion of the charger unit, and the rectifier circuit portion is operated at the time of the equal charge operation of the charger unit to operate the blower means and perform the equal charge operation under forced air cooling. In power supply,
A blower means operation control circuit for starting and stopping the blower means, an abnormality detection circuit for detecting an abnormality of the blower means, and an equal charge operation under forced air cooling of the rectifier circuit portion of the charger unit. A control device having a first charger control circuit to perform and a second charger control circuit to perform a floating charging operation;
During the floating charging operation, the air blowing means operation control circuit and the abnormality detection circuit are operated to output the air blowing means activation confirmation signal and the non-abnormal signal, and when the equal operation signal is given during the equal charge operation, the equal charge operation is performed. The permission signal is output to operate the first charger control circuit, and the floating charge operation permission signal to the first charger control circuit is turned off to shift from the floating charge operation to the equal charge operation. dc power supply said. A charger unit having a rectifier circuit unit for converting AC power into DC power, and connected to the rectifier circuit unit of the charger unit, the DC power supplied from the rectifier circuit unit is charged and stored in each cell. A plurality of blowing means are provided in the rectifier circuit portion of the storage battery and the charger unit, and during the equal charging operation of the charger unit, the plurality of blowing means are operated, and the rectifier circuit portion is forced-cooled. In the DC power supply device that performs the equal charge operation originally,
A blowing means operation control circuit for individually starting and stopping the blowing means, an abnormality detection circuit for individually detecting an abnormality of the blowing means, and the rectifier circuit portion of the charger unit under forced air cooling Providing a control device having a first charger control circuit that individually performs equal charge operation and a second charger control circuit that individually performs floating charge operation;
During the floating charging operation, the air blowing means operation control circuit and the abnormality detection circuit are operated to output the air blowing means activation confirmation signal and the non-abnormal signal, and when the equal operation signal is given during the equal charge operation, the equal charge operation is performed. The permission signal is output to operate the first charger control circuit, and the floating charge operation permission signal to the first charger control circuit is turned off to shift from the floating charge operation to the equal charge operation. DC power supply characterized by the above. A charger unit having a rectifier circuit unit for converting AC power into DC power, and connected to the rectifier circuit unit of the charger unit, the DC power supplied from the rectifier circuit unit is charged and stored in each cell. The rectifying circuit portion of the battery and the charger is provided with a plurality of air blowing means and a plurality of spare air blowing means, and the plurality of air blowing means are operated during the equal charging operation of the charger unit, and the rectification is performed. In a DC power supply device that performs equal charge operation under forced air cooling of the circuit part,
A blower operation control circuit for starting and stopping the blower, a preliminary machine operation control circuit for starting and stopping the preliminary blower, an abnormality detection circuit for detecting an abnormality of the blower, and the preliminary blower A spare machine abnormality detection circuit for detecting an abnormality of the means, a first charger control circuit for performing uniform charging of the rectifier circuit portion of the charger unit under forced air cooling, and a rectifier circuit portion for natural wind A control device having a second charger control circuit for performing a floating charging operation under cold;
During the equal charge operation, both a blower means start confirmation signal from the blower means operation control circuit or a spare machine start confirmation signal from the spare machine operation control circuit and a non-abnormal signal from the spare machine abnormality detection circuit were given. When the charging operation permission signal is output to operate the first charger control circuit, the floating charging operation permission signal of the first charger control circuit is turned off to shift from the floating charging operation to the equal charging operation. A DC power supply device characterized in that it is configured as described above . A charger unit having a rectifier circuit unit for converting AC power into DC power, and connected to the rectifier circuit unit of the charger unit, the DC power supplied from the rectifier circuit unit is charged and stored in each cell. The rectifying circuit portion of the battery and the charger is provided with a plurality of air blowing means and a plurality of auxiliary air blowing means, and the plurality of air blowing means are operated during the equal charging operation of the charger unit, and the rectification is performed. In the DC power supply device that performs equal charge operation under forced air cooling of the circuit part,
  A blower operation control circuit for starting and stopping the blower means, a spare machine operation control circuit for starting and stopping the preliminary blower means, an abnormality detection circuit for detecting an abnormality of the blower means, and the preliminary blower A spare machine abnormality detection circuit for detecting an abnormality of the means, a first charger control circuit for performing uniform charging of the rectifier circuit portion of the charger unit under forced air cooling, and a second for performing a floating charging operation. A control device having a charger control circuit of
  During the floating charging operation, the blower means operation control circuit, the spare machine operation control circuit and the abnormality detection circuit are operated to output the blower means start confirmation signal or the spare machine start confirmation signal and the non-abnormal signal, and the equal charge operation When an equal operation signal is given, an equal charge operation permission signal is output to operate the first charger control circuit, and the floating charge operation permission signal to the first charger control circuit is turned off. A direct-current power supply device that is shifted from a floating charging operation to a uniform charging operation.

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