JP7782676B2 - Power management device for electric vehicles - Google Patents
Power management device for electric vehiclesInfo
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- JP7782676B2 JP7782676B2 JP2024510855A JP2024510855A JP7782676B2 JP 7782676 B2 JP7782676 B2 JP 7782676B2 JP 2024510855 A JP2024510855 A JP 2024510855A JP 2024510855 A JP2024510855 A JP 2024510855A JP 7782676 B2 JP7782676 B2 JP 7782676B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
本開示は、電動車両の電源管理装置に関する。 This disclosure relates to a power management device for an electric vehicle.
特許文献１には、高圧で駆動される走行モータに給電する駆動用バッテリと、低圧で駆動される補機類に給電する補機用バッテリを備えた電動車両が開示されている。このように駆動用バッテリと補機用バッテリを備えた電動車両を放置していると、補機用バッテリの蓄電電力は徐々に減っていく。このため、所定期間ごとに駆動用バッテリに補機用バッテリを電気的に接続するとともにＤＣＤＣコンバータを起動することで、駆動用バッテリから補機用バッテリに電力を供給し、補機用バッテリを充電している（このように所定期間ごとに補機用バッテリを充電することを「定期補機充電」という）。 Patent Document 1 discloses an electric vehicle equipped with a drive battery that supplies power to a high-voltage-driven traction motor and an auxiliary battery that supplies power to low-voltage-driven auxiliary equipment. When an electric vehicle equipped with a drive battery and an auxiliary battery is left unattended, the stored power in the auxiliary battery gradually decreases. For this reason, the auxiliary battery is electrically connected to the drive battery at predetermined intervals and a DC-DC converter is activated, thereby supplying power from the drive battery to the auxiliary battery and charging it (charging the auxiliary battery at predetermined intervals in this manner is referred to as "periodic auxiliary charging").
しかしながら、電動車両を放置したまま何らかの理由で定期補機充電が繰り返し実行されないと、やがて補機用バッテリの蓄電電力が不足し、電動車両を起動できなくなる。However, if an electric vehicle is left unattended and regular auxiliary charging is not performed repeatedly for some reason, the stored power in the auxiliary battery will eventually become insufficient, and the electric vehicle will no longer be able to start.
上述の事情に鑑みて、本発明の少なくとも一実施形態は、補機用バッテリの蓄電電力が不足し、電動車両が起動できなくなる頻度を低減できる電動車両の電源管理装置を提供することを目的とする。 In consideration of the above circumstances, at least one embodiment of the present invention aims to provide a power management device for an electric vehicle that can reduce the frequency of an electric vehicle being unable to start due to insufficient stored power in an auxiliary battery.
（１）本発明の少なくとも一実施形態に係る電動車両の電源管理装置は、駆動用バッテリと補機用バッテリとを電気的に接続又は遮断するコンタクタを備えた電動車両の電源管理装置であって、予め定められたタイミングになると予め定められた充電期間だけ前記コンタクタの接続要求を出力する要求判定部が設けられた補機充電管理ユニットと、前記コンタクタの接続要求が入力された場合に前記電動車両の開閉部材の開閉情報に基づいて前記コンタクタの接続可否を判定する充電実施判定部と、前記充電実施判定部が接続不可と判定した回数をカウントするカウント部とが設けられた接続管理ユニットとを備え、前記補機充電管理ユニットは、前記カウント部がカウントした回数が増えるにしたがって前記予め定められたタイミングまでの期間を短縮するタイミング変更部を有する。 (1) In at least one embodiment of the present invention, a power supply management device for an electric vehicle is provided with a contactor that electrically connects or disconnects a drive battery and an auxiliary battery, and includes: an auxiliary charging management unit provided with a request determination unit that outputs a connection request for the contactor for a predetermined charging period at a predetermined timing; a charging execution determination unit that determines whether the contactor can be connected based on opening and closing information of an opening and closing member of the electric vehicle when the connection request for the contactor is input; and a connection management unit provided with a counting unit that counts the number of times the charging execution determination unit determines that connection is not possible, and the auxiliary charging management unit has a timing change unit that shortens the period until the predetermined timing as the number of times counted by the counting unit increases.
上記（１）の構成によれば、カウント部がカウントした回数が増えるにしたがって予め定められたタイミングまでの期間を短縮するので、充電（定期補機充電）の開始タイミングが早まり、補機用バッテリの蓄電電力が不足し、電動車両が起動できなくなる頻度を低減できる。 According to the configuration (1) above, the period until the predetermined timing is shortened as the number of times counted by the counting unit increases, thereby accelerating the timing to start charging (regular auxiliary charging) and reducing the frequency of the electric vehicle being unable to start due to a lack of stored power in the auxiliary battery.
（２）幾つかの実施形態では、上記（１）の構成において、前記カウント部は、前記充電実施判定部が接続可と判定した場合に前記回数をリセットする。 (2) In some embodiments, in the configuration described in (1) above, the counting unit resets the number of times when the charging execution determination unit determines that connection is possible.
上記（２）の構成によれば、カウント部は、充電実施判定部が接続可と判定した場合に接続不可と判定した回数をリセットするので、充電（定期補機充電）の開始タイミングは予め定められたタイミングとなり、補機用バッテリの過充電を防止できる。 According to the configuration (2) above, the counting unit resets the number of times it has determined that connection is not possible when the charging execution determination unit determines that connection is possible, so that the start timing of charging (regular auxiliary charging) is a predetermined timing, preventing overcharging of the auxiliary battery.
（３）幾つかの実施形態では、上記（１）の構成において、前記補機充電管理ユニットは、前記充電実施判定部が接続不可と判定した場合に前記充電期間を延長する充電期間延長部を有する。 (3) In some embodiments, in the configuration of (1) above, the auxiliary equipment charging management unit has a charging period extension unit that extends the charging period when the charging execution determination unit determines that connection is not possible.
上記（３）の構成によれば、充電実施判定部が接続不可と判定した場合に充電期間延長部が充電期間を延長するので、次の充電（定期補機充電）の充電時間が延び、補機用バッテリの蓄電電力が不足し、電動車両が起動できなくなる頻度を低減できる。 According to the configuration (3) above, if the charging execution determination unit determines that connection is not possible, the charging period extension unit extends the charging period, thereby extending the charging time for the next charge (regular auxiliary charging), reducing the frequency of the electric vehicle being unable to start due to a shortage of stored power in the auxiliary battery.
本発明の少なくとも一実施形態によれば、補機用バッテリの蓄電電力が不足し、電動車両が起動できなくなる頻度を低減できる。 At least one embodiment of the present invention reduces the frequency with which an electric vehicle cannot be started due to insufficient stored power in the auxiliary battery.
以下、添付図面を参照して本発明の幾つかの実施形態について説明する。ただし、実施形態として記載されている又は図面に示されている構成部品の寸法、材質、形状、その相対的配置等は、本発明の範囲をこれに限定する趣旨ではなく、単なる説明例にすぎない。 Several embodiments of the present invention will be described below with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described as embodiments or shown in the drawings are merely illustrative examples and are not intended to limit the scope of the present invention.
［実施形態１］
［電源管理装置の構成］
図１は、実施形態１に係る電動車両の電源管理装置１Ａを概略的に示すブロック図である。
[Embodiment 1]
[Power Management Device Configuration]
FIG. 1 is a block diagram illustrating a power supply management device 1A for an electrically powered vehicle according to a first embodiment.
実施形態１に係る電動車両の電源管理装置１Ａは、電気自動車、ハイブリッド自動車、プラグインハイブリッド自動車等の電動車両に採用される。プラグインハイブリッド自動車は、外部充電可能であり、かつ、外部給電可能である。The power management device 1A for an electric vehicle according to embodiment 1 is used in electric vehicles, hybrid vehicles, plug-in hybrid vehicles, and other electric vehicles. Plug-in hybrid vehicles can be externally charged and externally powered.
図１に示すように、電動車両は、駆動用バッテリ３と補機用バッテリ５とを電気的に接続又は遮断するコンタクタ７を備えている。コンタクタ７と補機用バッテリ５との間にはＤＣＤＣコンバータ９が設けられている。ＤＣＤＣコンバータ９は、駆動用バッテリ３の電圧を補機用バッテリ５に供給可能な電圧に変換するためのもので、コンタクタ７によって駆動用バッテリ３と補機用バッテリ５とが電気的に接続された場合に起動され、コンタクタ７によって駆動用バッテリ３と補機用バッテリ５とが電気的に遮断された場合に停止する。 As shown in Figure 1, the electric vehicle is equipped with a contactor 7 that electrically connects or disconnects the drive battery 3 and the auxiliary battery 5. A DC-DC converter 9 is provided between the contactor 7 and the auxiliary battery 5. The DC-DC converter 9 converts the voltage of the drive battery 3 to a voltage that can be supplied to the auxiliary battery 5, and is activated when the drive battery 3 and the auxiliary battery 5 are electrically connected by the contactor 7, and is stopped when the drive battery 3 and the auxiliary battery 5 are electrically disconnected by the contactor 7.
電動車両の電源管理装置１Ａは、補機充電管理ユニット１１及び接続管理ユニット１３を備えている。補機充電管理ユニット１１及び接続管理ユニット１３は、それぞれ、演算装置、命令や情報を格納するレジスタ、及び周辺回路等から構成されるプロセッサ（図示せず）、ＲＯＭ（Ｒｅａｄ Ｏｎｌｙ Ｍｅｍｏｒｙ）、ＲＡＭ（Ｒａｎｄｏｍ Ａｃｃｅｓｓ Ｍｅｍｏｒｙ）等のメモリ（図示せず）、及び入力インタフェース（図示せず）によって構成される。補機充電管理ユニット１１及び接続管理ユニット１３には補機用バッテリ５が接続され、補機用バッテリ５から補機充電管理ユニット１１及び接続管理ユニット１３に電力が常時供給される。 The power supply management device 1A for an electric vehicle includes an auxiliary charging management unit 11 and a connection management unit 13. The auxiliary charging management unit 11 and the connection management unit 13 each include a processor (not shown) that is comprised of an arithmetic unit, registers that store instructions and information, and peripheral circuits, memory (not shown) such as ROM (Read Only Memory) and RAM (Random Access Memory), and an input interface (not shown). An auxiliary battery 5 is connected to the auxiliary charging management unit 11 and the connection management unit 13, and power is constantly supplied from the auxiliary battery 5 to the auxiliary charging management unit 11 and the connection management unit 13.
補機充電管理ユニット１１には、予め定められたタイミングになると予め定められた充電期間だけコンタクタ７の接続要求を出力する要求判定部１５が設けられている。予め定められたタイミングは定期補機充電を開始するタイミングであり、予め定められた充電期間は定期補機充電の充電期間である。The auxiliary charging management unit 11 is provided with a request determination unit 15 that outputs a connection request for the contactor 7 for a predetermined charging period at a predetermined timing. The predetermined timing is the timing for starting regular auxiliary charging, and the predetermined charging period is the charging period for regular auxiliary charging.
例えば、補機充電管理ユニット１１には、定期補機充電を開始するタイミングを決定する開始日時決定部１７、及び定期補機充電が終了するまでの期間（残期間）を計測する残期間計測部１９が設けられ、要求判定部１５は開始日時決定部１７で決定された定期補機充電を開始するタイミングになると、残期間計測部１９で計測された残期間が残っている限りコンタクタ７の接続要求を出力するように構成される。定期補機充電を開始するタイミングは、例えば、前回の補機充電（定期補機充電に限らない）の終了から予め定められた期間が経過した日時である。例えば、開始日時決定部１７は、補機充電管理ユニット１１に接続された時計情報管理ユニット２１が管理する現在日時が、開始日時決定部１７が決定した定期補機充電を開始するタイミングになると、定期補機充電開始要求を出力するように構成される。また、例えば、残期間計測部１９は、定期補機充電開始要求が入力された時に残期間の計測を開始し、定期補機充電の終了によって残期間の計測を終了するように構成され、残期間が残っている限り定期補機充電要求を出力するように構成される。また、例えば、要求判定部１５は、定期補機充電要求が入力されている期間だけコンタクタ７の接続要求を出力するように構成される。For example, the auxiliary charging management unit 11 is provided with a start date and time determination unit 17 that determines the timing to start periodic auxiliary charging, and a remaining period measurement unit 19 that measures the period (remaining period) until periodic auxiliary charging ends. The request determination unit 15 is configured to output a request to connect the contactor 7 when the timing to start periodic auxiliary charging determined by the start date and time determination unit 17 arrives, as long as the remaining period measured by the remaining period measurement unit 19 remains. The timing to start periodic auxiliary charging is, for example, the date and time when a predetermined period has elapsed since the end of the previous auxiliary charging (not limited to periodic auxiliary charging). For example, the start date and time determination unit 17 is configured to output a request to start periodic auxiliary charging when the current date and time managed by the clock information management unit 21 connected to the auxiliary charging management unit 11 reaches the timing to start periodic auxiliary charging determined by the start date and time determination unit 17. Furthermore, for example, the remaining period measurement unit 19 is configured to start measuring the remaining period when a periodic auxiliary charging start request is input, to end measuring the remaining period when periodic auxiliary charging ends, and to output a periodic auxiliary charging request as long as there is remaining time. Furthermore, for example, the request determination unit 15 is configured to output a connection request for the contactor 7 only during the period during which the periodic auxiliary charging request is input.
接続管理ユニット１３には、コンタクタ７の接続要求が入力された場合にコンタクタ７の接続可否を判定する充電実施判定部２３と、充電実施判定部２３が接続不可と判定した回数をカウントするカウント部２５とが設けられている。 The connection management unit 13 is provided with a charging execution determination unit 23 that determines whether the contactor 7 can be connected when a connection request for the contactor 7 is input, and a counting unit 25 that counts the number of times the charging execution determination unit 23 determines that connection is not possible.
例えば、充電実施判定部２３には、エンジンフード、テールゲート、リアドア等の開閉部材の開閉情報を取得する情報取得部２７が設けられた状態管理ユニット２９が接続され、充電実施判定部２３は、これら開閉部材の全てが閉である場合に接続可と判定する一方、これら開閉部材の少なくとも１つが開である場合に接続不可と判定するように構成されている。 For example, the charging implementation determination unit 23 is connected to a status management unit 29 having an information acquisition unit 27 that acquires opening/closing information of opening/closing members such as the engine hood, tailgate, and rear door, and the charging implementation determination unit 23 is configured to determine that connection is possible when all of these opening/closing members are closed, and to determine that connection is not possible when at least one of these opening/closing members is open.
また、充電実施判定部２３は、接続可と判定した場合に要求判定部１５からコンタクタ７の接続要求が出力されている期間だけコンタクタ７に接続要求を出力する一方、接続不可と判定した場合に直ちにコンタクタ７に遮断要求を出力するように構成されている。 In addition, the charging implementation determination unit 23 is configured to output a connection request to the contactor 7 only for the period during which a connection request to the contactor 7 is output from the request determination unit 15 when it determines that connection is possible, and to immediately output a disconnection request to the contactor 7 when it determines that connection is not possible.
カウント部２５は、充電実施判定部２３が接続可と判定した場合に回数をリセットするが、これに限られるものではなく、例えば、接続可と判定した回数が予め定められた回数となった場合にリセットするものとしてもよい。 The counting unit 25 resets the number of times when the charging execution determination unit 23 determines that connection is possible, but this is not limited to this.For example, the counting unit 25 may be reset when the number of times that connection is determined to be possible reaches a predetermined number.
補機充電管理ユニット１１には、カウント部２５でカウントした回数が増えるにしたがって定期補機充電を開始するまでの期間を短縮するタイミング変更部３１が設けられている。 The auxiliary charging management unit 11 is provided with a timing change unit 31 that shortens the period until regular auxiliary charging begins as the number of times counted by the counting unit 25 increases.
タイミング変更部３１は、例えば、図２に示すように、定期補機充電の開始タイミングを前回の補機充電の終了からＴＡ期間（初期値）後としている場合において、充電実施判定部２３が接続不可と判定することで定期補機充電を失敗した場合に、次回の定期補機充電の開始タイミングをＴＡ期間よりも短いＴＢ期間とする。そして、ＴＢ期間後の定期補機充電を失敗した場合に、タイミング変更部３１は、次回の定期補機充電の開始タイミングをＴＢ期間よりも短いＴＣ期間とする。 For example, as shown in Figure 2, if the start timing of periodic auxiliary charging is set to a TA period (initial value) after the end of the previous auxiliary charging, and the charging execution determination unit 23 determines that connection is not possible and the periodic auxiliary charging fails, the timing change unit 31 sets the start timing of the next periodic auxiliary charging to a TB period, which is shorter than the TA period. If periodic auxiliary charging after the TB period fails, the timing change unit 31 sets the start timing of the next periodic auxiliary charging to a TC period, which is shorter than the TB period.
また、例えば、定期補機充電の開始タイミングをＴＡ期間よりも短い期間としている場合に、充電実施判定部２３が接続可と判定すると、カウント部２５が回数をリセットすることで、タイミング変更部３１は、次回の定期補機充電の開始するタイミングをＴＡ期間（初期値）とする。 Also, for example, if the start timing of regular auxiliary charging is set to a period shorter than the TA period, when the charging execution determination unit 23 determines that connection is possible, the counting unit 25 resets the number of times, and the timing change unit 31 sets the start timing of the next regular auxiliary charging to the TA period (initial value).
［電源管理装置１Ａの動作］
図３は、実施形態１に係る電動車両の電源管理装置１Ａの動作内容を概略的に示すフローチャートである。
[Operation of power management device 1A]
FIG. 3 is a flowchart showing an outline of the operation of the power supply management device 1A of the electrically powered vehicle according to the first embodiment.
図３に示すように、実施形態１に係る電動車両の電源管理装置１Ａでは、定期補機充電を開始するタイミングになると（ステップＳ１１：Ｙｅｓ）、要求判定部１５が予め定められた時間だけコンタクタ７の接続要求を出力する（ステップＳ１３）。このコンタクタ７の接続要求が充電実施判定部２３に入力されると、充電実施判定部２３がコンタクタ７の接続可否を判定する（ステップＳ１５）。充電実施判定部２３が接続可と判定した場合には充電実施判定部２３が残期間計測部１９から定期補機充電要求が出力されている時間が終了するまでコンタクタ７の接続要求を出力する（ステップＳ１７～Ｓ２１）。これにより、コンタクタ７は、予め定められたタイミングで予め定められた時間が終了するまで駆動用バッテリ３と補機用バッテリ５とを電気的に接続する。この結果、駆動用バッテリ３から補機用バッテリ５に電力が供給され、補機用バッテリ５が充電される（定期補機充電）。As shown in FIG. 3 , in the power supply management device 1A for an electric vehicle according to embodiment 1, when it is time to start periodic auxiliary charging (step S11: Yes), the request determination unit 15 outputs a connection request for the contactor 7 for a predetermined period of time (step S13). When this connection request for the contactor 7 is input to the charging execution determination unit 23, the charging execution determination unit 23 determines whether the contactor 7 can be connected (step S15). If the charging execution determination unit 23 determines that connection is possible, the charging execution determination unit 23 outputs a connection request for the contactor 7 until the time during which the periodic auxiliary charging request is output from the remaining period measurement unit 19 ends (steps S17 to S21). As a result, the contactor 7 electrically connects the drive battery 3 and the auxiliary battery 5 at a predetermined timing until the predetermined time ends. As a result, power is supplied from the drive battery 3 to the auxiliary battery 5, and the auxiliary battery 5 is charged (periodic auxiliary charging).
一方、駆動用バッテリ３と補機バッテリとが電気的に接続されている状態で、充電実施判定部２３が接続不可と判定した場合（ステップＳ１９：Ｎｏ）には充電実施判定部２３はコンタクタ７の遮断要求を出力する（ステップＳ２３）。これにより、コンタクタ７は、直ちに駆動用バッテリ３と補機用バッテリ５とを電気的に遮断する。この結果、駆動用バッテリ３から補機バッテリへの電力供給が遮断され、補機用バッテリ５の充電が中止される。On the other hand, if the drive battery 3 and the auxiliary battery are electrically connected and the charging execution determination unit 23 determines that connection is not possible (step S19: No), the charging execution determination unit 23 outputs a request to disconnect the contactor 7 (step S23). This causes the contactor 7 to immediately electrically disconnect the drive battery 3 and the auxiliary battery 5. As a result, the power supply from the drive battery 3 to the auxiliary battery is cut off, and charging of the auxiliary battery 5 is stopped.
他方、充電実施判定部２３にコンタクタ７の接続要求が入力されても充電実施判定部２３が接続不可と判定した場合（ステップＳ１５：Ｎｏ）にはカウント部２５が接続不可とした回数をカウントする（ステップＳ２５）。カウント部２５が接続不可をカウントすると、タイミング変更部３１は、次回の定期補機充電を開始するタイミングをＴＡ期間よりも短いＴＢ期間とする（ステップＳ２７）。そして、ＴＢ期間後の定期補機充電を失敗した場合に、タイミング変更部３１は、時間の定期補機充電を開始するタイミングをＴＢ期間よりも短いＴＣ期間とする（ステップＳ２７）。On the other hand, if the charging execution determination unit 23 determines that connection is not possible even when a connection request for the contactor 7 is input (step S15: No), the counting unit 25 counts the number of times that connection is not possible (step S25). When the counting unit 25 counts the number of times that connection is not possible, the timing change unit 31 sets the timing to start the next periodic auxiliary charging to the TB period, which is shorter than the TA period (step S27). Then, if periodic auxiliary charging after the TB period fails, the timing change unit 31 sets the timing to start the next periodic auxiliary charging to the TC period, which is shorter than the TB period (step S27).
定期補機充電の開始値タイミングをＴＡ期間よりも短い期間としている場合に、充電実施判定部２３が接続可と判定すると（ステップＳ１５：Ｙｅｓ）、カウント部２５はカウントした回数をリセットする（ステップＳ２９）。これにより、タイミング変更部３１は、次回の定期補機充電を開始するタイミングをＴＡ期間（初期値）とする。If the start timing of periodic auxiliary charging is set to a period shorter than the TA period, and the charging execution determination unit 23 determines that connection is possible (step S15: Yes), the counting unit 25 resets the counted number (step S29). As a result, the timing change unit 31 sets the start timing of the next periodic auxiliary charging to the TA period (initial value).
［効果］
実施形態１に係る電動車両の電源管理装置１Ａによれば、カウント部２５がカウントした回数が増えるにしたがって予め定められたタイミングまでの期間を短縮するので、充電（定期補機充電）の開始タイミングが早まり、補機用バッテリ５の蓄電電力が不足し、電動車両が軌道できなくなる頻度を低減できる。
[effect]
According to the power supply management device 1A for an electric vehicle of embodiment 1, the period until the predetermined timing is shortened as the number of times counted by the counting unit 25 increases, so the timing for starting charging (regular auxiliary charging) is advanced, and the frequency of the electric vehicle being unable to stay on track due to a shortage of stored power in the auxiliary battery 5 can be reduced.
また、カウント部２５は、充電実施判定部２３が接続可と判定した場合に接続不可と判定した回数をリセットするので、充電（定期補機充電）の開始タイミングは予め定められたタイミングとなり、補機用バッテリ５の過充電を防止できる。 In addition, the counting unit 25 resets the number of times it has determined that connection is not possible when the charging implementation determination unit 23 determines that connection is possible, so that the start timing of charging (regular auxiliary charging) is a predetermined timing, preventing overcharging of the auxiliary battery 5.
［実施形態２］
［電源管理装置の構成］
図４は、実施形態２に係る電動車両の電源管理装置１Ｂの構成を概略的に示すブロック図である。
[Embodiment 2]
[Power Management Device Configuration]
FIG. 4 is a block diagram showing a schematic configuration of a power supply management device 1B for an electrically powered vehicle according to the second embodiment.
実施形態２に係る電動車両の電源管理装置１Ｂの補機充電管理ユニット１１の要求判定部１５、及び、接続管理ユニット１３の充電実施判定部２３の構成は、実施形態１に係る電動車両の電源管理装置１Ａの接続管理ユニット１３の要求判定部１５、及び接続管理ユニット１３の充電実施判定部２３の構成と同じである。 The configuration of the request determination unit 15 of the auxiliary charging management unit 11 and the charging execution determination unit 23 of the connection management unit 13 of the power management device 1B of the electric vehicle in embodiment 2 is the same as the configuration of the request determination unit 15 of the connection management unit 13 and the charging execution determination unit 23 of the connection management unit 13 of the power management device 1A of the electric vehicle in embodiment 1.
図４に示すように、補機充電管理ユニット１１には、充電実施判定部２３が接続不可と判定した場合に充電期間を延長する充電期間延長部３３を備えている。 As shown in Figure 4, the auxiliary equipment charging management unit 11 is equipped with a charging period extension unit 33 that extends the charging period when the charging execution determination unit 23 determines that connection is not possible.
例えば、図５に示すように、充電期間をＴＸ期間（初期値）としている場合において、充電実施判定部２３が接続不可と判定することで定期補機充電を失敗した場合に、充電期間延長部３３は、次回の定期補機充電の充電期間をＴＸ期間よりも長いＴＹ期間とする。 For example, as shown in Figure 5, when the charging period is set to the TX period (initial value), if the charging execution determination unit 23 determines that connection is not possible and regular auxiliary charging fails, the charging period extension unit 33 sets the charging period for the next regular auxiliary charging to the TY period, which is longer than the TX period.
また、例えば、定期補機充電の充電期間をＴＸ期間よりも長い期間ＴＹとしている場合に、充電実施判定部２３が接続可と判定すると、充電期間延長部３３は、次回の定期補機充電の充電期間をＴＸ期間（初期値）とする。 Also, for example, if the charging period for regular auxiliary charging is set to TY, which is longer than the TX period, and the charging implementation determination unit 23 determines that connection is possible, the charging period extension unit 33 sets the charging period for the next regular auxiliary charging to the TX period (initial value).
［電源管理装置１Ｂの動作］
図６は、実施形態２に係る電動車両の電源管理装置１Ｂの動作内容を概略的に示すフローチャートである。
[Operation of power management device 1B]
FIG. 6 is a flowchart showing an outline of the operation of the power supply management device 1B of an electrically powered vehicle according to the second embodiment.
実施形態２に係る電動車両の電源管理装置１Ｂの補機充電管理ユニット１１の要求判定部１５、及び接続管理ユニット１３の充電実施判定部２３の動作は、実施形態１に係る電動車両の電源管理装置１Ａの補機充電管理ユニット１１の要求判定部１５、及び接続管理ユニット１３の充電実施判定部２３の動作と同じである。 The operation of the request determination unit 15 of the auxiliary charging management unit 11 and the charging execution determination unit 23 of the connection management unit 13 of the power supply management device 1B of the electric vehicle of embodiment 2 is the same as the operation of the request determination unit 15 of the auxiliary charging management unit 11 and the charging execution determination unit 23 of the connection management unit 13 of the power supply management device 1A of the electric vehicle of embodiment 1.
図６に示すように、実施形態２に係る電動車両の電源管理装置１Ｂでは、充電実施判定部２３にコンタクタ７の接続要求が入力されても充電実施判定部２３が接続不可と判定した場合（ステップＳ１５：Ｎｏ）には、充電期間延長部３３が定期補機充電の充電時間をＴＸ期間よりも長いＴＹ期間とする（ステップＳ３１）。 As shown in Figure 6, in the power management device 1B for an electric vehicle of embodiment 2, if a request to connect the contactor 7 is input to the charging execution determination unit 23 but the charging execution determination unit 23 determines that connection is not possible (step S15: No), the charging period extension unit 33 sets the charging time for regular auxiliary charging to a TY period that is longer than the TX period (step S31).
定期補機充電の充電期間をａ期間よりも短い期間としている場合に、充電実施判定部２３が接続可と判定すると（ステップＳ１５：Ｙｅｓ）、充電期間延長部３３は定期補機充電の充電期間をＴＸ期間（初期値）とする（ステップＳ３３）。 If the charging period for regular auxiliary charging is set to a period shorter than period a, and the charging implementation determination unit 23 determines that connection is possible (step S15: Yes), the charging period extension unit 33 sets the charging period for regular auxiliary charging to the TX period (initial value) (step S33).
［効果］
実施形態２に係る電動車両の電源管理装置１Ｂによれば、充電実施判定部２３が接続不可と判定した場合に充電期間延長部３３が充電期間を延長するので、次の充電（定期補機充電）の充電時間が延び、補機用バッテリ５の蓄電電力が不足し、電動車両が起動できなくなる頻度を低減できる。
[effect]
According to the power supply management device 1B for an electric vehicle of the second embodiment, when the charging execution determination unit 23 determines that connection is not possible, the charging period extension unit 33 extends the charging period. This extends the charging time for the next charge (regular auxiliary charging), which reduces the frequency of the electric vehicle being unable to start due to a shortage of stored power in the auxiliary battery 5.
１Ａ，１Ｂ 電源管理装置
３ 駆動用バッテリ
５ 補機用バッテリ
７ コンタクタ
９ ＤＣＤＣコンバータ
１１ 補機充電管理ユニット
１３ 接続管理ユニット
１５ 要求判定部
１７ 開始日時決定部
１９ 残期間計測部
２１ 時計情報管理ユニット
２３ 充電実施判定部
２５ カウント部
２７ 情報取得部
２９ 状態管理ユニット
３１ タイミング変更部
３３ 充電期間延長部
DESCRIPTION OF SYMBOLS 1A, 1B Power supply management device 3 Drive battery 5 Auxiliary battery 7 Contactor 9 DCDC converter 11 Auxiliary charging management unit 13 Connection management unit 15 Request determination unit 17 Start date and time determination unit 19 Remaining period measurement unit 21 Clock information management unit 23 Charging execution determination unit 25 Count unit 27 Information acquisition unit 29 Status management unit 31 Timing change unit 33 Charging period extension unit
Claims (3)
予め定められたタイミングになると予め定められた充電期間だけ前記コンタクタの接続要求を出力する要求判定部が設けられた補機充電管理ユニットと、
前記コンタクタの接続要求が入力された場合に前記電動車両の開閉部材の開閉情報に基づいて前記コンタクタの接続可否を判定する充電実施判定部と、前記充電実施判定部が接続不可と判定した回数をカウントするカウント部とが設けられた接続管理ユニットと
を備え、
前記補機充電管理ユニットは、前記カウント部がカウントした回数が増えるにしたがって前記予め定められたタイミングまでの期間を短縮するタイミング変更部を有する、
電動車両の電源管理装置。 A power supply management device for an electric vehicle equipped with a contactor that electrically connects or disconnects a drive battery and an auxiliary battery,
an auxiliary equipment charge management unit including a request determination unit that outputs a connection request for the contactor for a predetermined charging period at a predetermined timing;
a connection management unit including a charging execution determination unit that determines whether or not the contactor can be connected based on open/close information of an open/close member of the electric vehicle when a connection request for the contactor is input, and a counting unit that counts the number of times the charging execution determination unit determines that the contactor cannot be connected;
The auxiliary equipment charge management unit includes a timing change unit that shortens the period until the predetermined timing as the number of times counted by the count unit increases.
Power management device for electric vehicles.
請求項１に記載の電動車両の電源管理装置。 the counting unit resets the number of times when the charging execution determination unit determines that connection is possible.
The power supply management device for an electric vehicle according to claim 1 .
請求項１又は２に記載の電動車両の電源管理装置。 the auxiliary equipment charge management unit includes a charging period extension unit that extends the charging period when the charging execution determination unit determines that connection is not possible.
The power supply management device for an electric vehicle according to claim 1 or 2.
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| PCT/JP2022/015853 WO2023188070A1 (en) | 2022-03-30 | 2022-03-30 | Electric vehicle power supply management device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014090630A (en) | 2012-10-31 | 2014-05-15 | Toyota Motor Corp | Electrical power system for electric vehicle |
| JP2014107968A (en) | 2012-11-28 | 2014-06-09 | Toyota Motor Corp | Power supply system for vehicle |
| JP2014155299A (en) | 2013-02-07 | 2014-08-25 | Toyota Motor Corp | Vehicular electric power system |
| JP7709100B2 (en) | 2022-03-30 | 2025-07-16 | 三菱自動車工業株式会社 | Power management device for electric vehicles |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014090630A (en) | 2012-10-31 | 2014-05-15 | Toyota Motor Corp | Electrical power system for electric vehicle |
| JP2014107968A (en) | 2012-11-28 | 2014-06-09 | Toyota Motor Corp | Power supply system for vehicle |
| JP2014155299A (en) | 2013-02-07 | 2014-08-25 | Toyota Motor Corp | Vehicular electric power system |
| JP7709100B2 (en) | 2022-03-30 | 2025-07-16 | 三菱自動車工業株式会社 | Power management device for electric vehicles |
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