JP3270982B2 - Battery charger - Google Patents
Battery chargerInfo
- Publication number
- JP3270982B2 JP3270982B2 JP33298794A JP33298794A JP3270982B2 JP 3270982 B2 JP3270982 B2 JP 3270982B2 JP 33298794 A JP33298794 A JP 33298794A JP 33298794 A JP33298794 A JP 33298794A JP 3270982 B2 JP3270982 B2 JP 3270982B2
- Authority
- JP
- Japan
- Prior art keywords
- charging
- battery
- voltage
- charging current
- charge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Secondary Cells (AREA)
- Telephone Set Structure (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、バッテリ装着検出スイ
ッチ類を設けずに充電電流監視により満充電検出とバッ
テリ装着の検出を行う機能を具備するバッテリチャ−ジ
ャ関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery charger having a function of detecting a full charge and detecting a battery mounting by monitoring a charging current without providing a battery mounting detecting switch.
【０００２】[0002]
【従来技術】図４は従来のバッテリチャ−ジャのブロッ
ク構成例を示す図である。図示するように、従来のバッ
テリチャ−ジャ１はＡＣ１００Ｖを直流に変換し直流定
電圧を出力する電源部１１、バッテリ２の充電状態を監
視する充電制御部１２、充電電流を検出するための抵抗
器１３、バッテリ２が装着されたか否かを検出する検出
スイッチ１５から構成され、充電端子１４を通してバッ
テリ２を充電する。2. Description of the Related Art FIG. 4 is a diagram showing an example of a block configuration of a conventional battery charger. As shown in the figure, a conventional battery charger 1 has a power supply unit 11 for converting AC 100 V to DC and outputting a constant DC voltage, a charge control unit 12 for monitoring a charge state of a battery 2, and a resistor for detecting a charge current. The battery 13 is composed of a detector 13 and a detection switch 15 for detecting whether or not the battery 2 is mounted.
【０００３】電源部１１は定電圧充電回路１１１及び出
力スイッチ１１２から構成される。充電制御部１２は電
流検出部１２２、電圧検出部１２３、装着検出部１２４
及び判定部１２１を有し、該判定部１２１で電流検出部
１２２、電圧検出部１２３及び装着検出部１２４を監視
し、バッテリ２の充電状態及び装着状態を判定し、電源
部１１に出力スイッチ１１２のオフ信号を出力し満充電
の表示（省略）等を行う。[0005] The power supply section 11 is composed of a constant voltage charging circuit 111 and an output switch 112. The charging control unit 12 includes a current detecting unit 122, a voltage detecting unit 123, and a mounting detecting unit 124.
And a determination unit 121. The determination unit 121 monitors the current detection unit 122, the voltage detection unit 123, and the attachment detection unit 124, determines the charge state and the attachment state of the battery 2, and outputs the output switch 112 to the power supply unit 11. To output (omitted) the full charge and the like.
【０００４】以下、バッテリチャ−ジャ１の動作を説明
する。はじめのうち一定電流であるのは充電電流の上限
のためでうる。電源部１１の出力スイッチ１１２は常時
オフされている。バッテリチャ−ジャ１はバッテリ２が
充電端子１４に装着されると検出スイッチ１５で検出
し、その検出信号を充電制御部１２へ送る。充電制御部
１２は装着検出部１２４を介して判定部１２１で装着さ
れたことを検知し、更に、電圧検出部１２３でバッテリ
２の電圧を確認すると、電源部１１へ出力スイッチ１１
２オンの信号を出力する。電源部１１は出力スイッチ１
１２をオンし抵抗器１３を通して充電電流を流し充電を
開始する。Hereinafter, the operation of the battery charger 1 will be described. The initial constant current may be due to the upper limit of the charging current. The output switch 112 of the power supply unit 11 is always off. The battery charger 1 detects when the battery 2 is attached to the charging terminal 14 by the detection switch 15 and sends a detection signal to the charging control unit 12. The charging control unit 12 detects that the battery 2 has been mounted by the determination unit 121 via the mounting detection unit 124, and further checks the voltage of the battery 2 by the voltage detection unit 123.
Outputs a 2-ON signal. Power supply unit 11 is output switch 1
12 is turned on, and a charging current is passed through the resistor 13 to start charging.
【０００５】充電電流は図３の実線ａに示すように時間
と共に減衰する。はじめのうち一定電流であるのは充電
電流の上限のためである。電流検出部１２２は、充電電
流が閾値Ａ2≦充電電流≦閾値Ａ1の範囲になるのを検出
すると判定部１２１は満充電と判定し電源部１１へ出力
スイッチ１１２オフの信号を出力し満充電の表示（図で
は省略）等を行う。電源部１１は出力スイッチ１１２を
オフし充電は完了する。なお、充電動作の途中でバッテ
リ２が抜き取られると充電電流は同図の点線ｂに示すよ
うに途中から充電電流≦閾値Ａ2へ変化することもあ
る。[0005] The charging current decays with time as shown by the solid line a in FIG. The initial constant current is due to the upper limit of the charging current. When the current detection unit 122 detects that the charging current falls within the range of threshold A 2 ≦ charging current ≦ threshold A 1 , the determination unit 121 determines that the battery is fully charged, outputs a signal to the power supply unit 11 to turn off the output switch 112, and outputs The display of charge (omitted in the figure) is performed. The power supply unit 11 turns off the output switch 112 and the charging is completed. Incidentally, the charging current battery 2 is extracted in the course of the charging operation may change in the middle as indicated by the dotted line b in FIG. The charging current ≦ threshold A 2.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来の
バッテリチャ−ジャ１ではバッテリ装着検出の為の検出
スイッチ（又は装着検出端子）を設けるため、部品点数
が増え、コスト高の要因となる。また、電気的接続や機
構的接触の順番を設計する機構設計が煩雑になる。ま
た、バッテリチャ−ジャ１のケ−スにスイッチの穴（又
は端子類）等が必要となり形状が複雑になり加工及び組
立が複雑となり、且つ機械的又は静電気などの外的要因
により障害に弱くなると云う問題があった。However, in the conventional battery charger 1, since a detection switch (or a mounting detection terminal) for detecting the mounting of the battery is provided, the number of parts increases, which causes a cost increase. Further, the mechanism design for designing the order of electrical connection and mechanical contact becomes complicated. In addition, the case of the battery charger 1 requires a switch hole (or terminals) and the like, which complicates the shape, complicates processing and assembly, and is vulnerable to failure due to external factors such as mechanical or static electricity. There was a problem.
【０００７】本発明は上述の点に鑑みてなされたもの
で、上記問題点を除去し、簡単な構造で、充電電流及
び、充電端子間電圧をチェックすることにより確実にバ
ッテリの装着及び満充電を検知できるバッテリチャ−ジ
ャを提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and eliminates the above-mentioned problems, and has a simple structure, and checks a charging current and a voltage between charging terminals to securely mount and fully charge a battery. It is an object of the present invention to provide a battery charger capable of detecting a battery charge.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
請求項１に記載の発明は、定電圧充電回路を具備し該定
電圧充電回路から定電圧を出力する電源部、バッテリの
充電電流を検出する充電電流検出部及びバッテリの電圧
を検出する電圧検出部を有する充電制御部と、バッテリ
を装着する充電端子を具備し、バッテリの充電を行うバ
ッテリチャージャにおいて、充電制御部は、充電開始前
の電圧検出部で検出された電圧から充電端子に該バッテ
リが装着されたか否かを判定し、バッテリが装着されて
いると判定した場合、充電を開始し、続いて充電電流検
出部で検出された充電電流が所定の充電電流閾値Ａ 1 以
下の場合は一旦充電を停止して再度バッテリが装着され
ているか否か判定し、バッテリが装着されていると判定
される場合には再度充電電流を確認すべく充電を再開
し、充電電流が前記充電電流閾値Ａ 1 以下の場合は満充
電状態のバッテリが装着されていると判定する機能を具
備することを特徴とする。[MEANS FOR SOLVING THE PROBLEMS]
The invention according to claim 1 includes a constant voltage charging circuit,
A power supply unit that outputs a constant voltage from the voltage charging circuit , a charging control unit that includes a charging current detection unit that detects a charging current of the battery and a voltage detection unit that detects a voltage of the battery, and a charging terminal for mounting the battery. In the battery charger for charging the battery, the charging control unit controls the charging before starting the charging.
From the voltage detected by the voltage detector
To determine if the battery has been installed.
If it is determined that the battery is
It detected charging current is predetermined charging current threshold A 1 than at exit portion
In the following case, stop charging and re-insert the battery.
The battery is installed.
If it is, restart charging to check the charging current again
And, characterized by including the function of determining the charging current battery fully charged when the charging current threshold A 1 below is mounted.
【０００９】また、請求項２記載の発明は、請求項１に
記載のバッテリチャージャにおいて、充電制御部は、二
つの所定の充電電流閾値Ａ1及びＡ2（Ａ1＞Ａ2）を設定
し、充電電流検出部で検出された充電電流が該充電電流
閾値Ａ1 以下で該充電電流閾値Ａ2 以上のときは充電完了
と判定し、更に該充電電流閾値Ａ2 以下のときはバッテ
リが前記充電端子から脱離されたと判定する機能を具備
することを特徴とする。 The invention described in claim 2 is the same as the invention described in claim 1.
In the battery charger described above, the charging control unit sets two predetermined charging current thresholds A 1 and A 2 (A 1 > A 2 ), and the charging current detected by the charging current detection unit is determined by the charging current threshold A 1 determines that the charge completion the charging current threshold a 2 or more time or less, characterized in that further when said charging current threshold a 2 or less conductive having a function of determining that the battery has been detached from the charging terminals And
【００１０】[0010]
【作用】本発明は上記構成を採用することにより、バッ
テリチャ−ジャ１は図３に示すように、バッテリ２の充
電が進むに従って充電電流が減少する特性を利用して、
バッテリ２の装着、充電の進行度及び満充電を検出して
いるため、バッテリ装着検出の為の検出スイッチ（又は
装着検出端子）類が必要なくなり部品点数が減り機構設
計も容易になり、コストダウンとなる。また、バッテリ
チャ−ジャ１のケ−スにスイッチ類（又は端子類）の穴
等が減り形状が簡単になり、機械的又は静電気などの外
的要因による障害にも強くなる。According to the present invention, by adopting the above-mentioned structure, the battery charger 1 utilizes the characteristic that the charging current decreases as the charging of the battery 2 proceeds as shown in FIG.
Since the installation of the battery 2, the progress of charging, and the full charge are detected, detection switches (or mounting detection terminals) for detecting the mounting of the battery are not required, the number of parts is reduced, the mechanism design is simplified, and the cost is reduced. Becomes In addition, the case of the battery charger 1 is reduced in the number of holes for switches (or terminals) and the like, so that the battery charger 1 is simplified in shape, and is more resistant to disturbances due to external factors such as mechanical or static electricity.
【００１１】[0011]
【実施例】以下、本発明の一実施例を図面に基づいて詳
細に説明する。図１は本発明のバッテリチャ−ジャのブ
ロック構成例を示す図である。図示するように、本発明
のバッテリチャ−ジャ１はＡＣ１００Ｖを直流に変換し
直流定電圧を出力する電源部１１、バッテリ２の充電状
態を監視し制御する充電制御部１２、充電電流を検出す
るための抵抗器１３から構成され、充電端子１４を通し
てバッテリ２を充電する。本発明は前述した、従来例か
らバッテリ２の装着を検出する部品（スイッチ類）を取
り除き、これらが有する機能をソフト（プログラム）で
処理するようにしたものである。なお、図１上で図４と
同じ番号を付したものは図４と同じ機能を表すもので動
作説明は省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing an example of a block configuration of a battery charger of the present invention. As shown in the figure, a battery charger 1 of the present invention converts a 100 V DC to a direct current and outputs a constant DC voltage, a power control unit 12 for monitoring and controlling the charging state of the battery 2, and detecting a charging current. And a resistor 13 for charging the battery 2 through a charging terminal 14. In the present invention, the components (switches) for detecting the attachment of the battery 2 are removed from the above-described conventional example, and the functions of these components are processed by software (program). 1 that are denoted by the same reference numerals as those in FIG. 4 represent the same functions as those in FIG.
【００１２】本発明のバッテリチャ−ジャ１はバッテリ
２が装着されると、それを検知し出力スイッチ１１２を
オンし充電を開始し、バッテリ２が満充電になる（充電
が完了する）と出力スイッチ１１２をオフし、表示（図
では省略）を行う。以下、バッテリ装着及び満充電の判
定方法を説明する。When the battery 2 is mounted, the battery charger 1 of the present invention detects this, turns on the output switch 112, starts charging, and outputs when the battery 2 is fully charged (charging is completed). The switch 112 is turned off, and a display (omitted in the figure) is performed. Hereinafter, a method of determining whether the battery is installed and the battery is fully charged will be described.
【００１３】まず、最初（出力スイッチ１１２はオフ状
態）にバッテリ２が装着されると、充電制御部１２は電
圧検出部１２３が充電端子１４間の電圧を検出すると出
力スイッチ１１２をオンし、バッテリ２に充電電流を流
す。該充電電流の値が閾値Ａ1（図３参照）より大きい
場合はバッテリ２が装着されたと判定し、充電を継続す
る。充電電流の値が閾値Ａ1より小さい場合は、更に、
この原因がバッテリ装着時の不安定な接触による誤検出
か又は満充電状態のバッテリ２が装着された為かを確認
するために一度、出力スイッチ１１２をオフし充電端子
１４間の電圧を測定しバッテリ電圧を確認し、再度出力
スイッチ１１２をオンしその時の充電電流の値が閾値Ａ
1より低いことを再確認すれば、満充電状態のバッテリ
２が装着されたものと判定する。First, when the battery 2 is first mounted (the output switch 112 is in the off state), the charging control unit 12 turns on the output switch 112 when the voltage detecting unit 123 detects the voltage between the charging terminals 14, and turns on the battery. 2 and a charging current is passed. When the value of the charging current is larger than the threshold value A 1 (see FIG. 3), it is determined that the battery 2 is mounted, and charging is continued. If the value of the charging current threshold A 1 is smaller than further,
The output switch 112 is turned off once and the voltage between the charging terminals 14 is measured to confirm whether the cause is erroneous detection due to unstable contact when the battery is mounted or whether the fully charged battery 2 is mounted. After confirming the battery voltage, the output switch 112 is turned on again, and the value of the charging current at that time becomes equal to the threshold A.
If it is confirmed again that it is lower than 1 , it is determined that the fully charged battery 2 is mounted.
【００１４】満充電（充電完了）の判定は充電電流が減
少し、閾値Ａ2≦充電電流≦閾値Ａ1の範囲内になったこ
とを検知し、満充電と判定する。なお、充電継続中にバ
ッテリ２が抜き取られることを想定し、充電電流≦閾値
Ａ2になれば出力スイッチ１１２をオフする。In the determination of full charge (charge completion), it is detected that the charge current has decreased and the charge current has fallen within the range of threshold value A 2 ≦ charge current ≦ threshold value A 1 , and it is determined that the battery is fully charged. Incidentally, assuming that the battery 2 is extracted in continuous charging, turns off the output switch 112 if the charging current ≦ threshold A 2.
【００１５】充電制御部１２の判定部１２１はＣＰＵ
（中央処理装置）を有し、電流検出部１２２で検出する
検出電流及び電圧検出部１２３で検出する検出電圧を監
視し、バッテリ２の充電判定処理を行う。図２は本発明
のバッテリチャ−ジャの充電判定処理のフロ−チャ−ト
である。以下、同図に従って本充電処理を説明する。The determination unit 121 of the charge control unit 12 is a CPU
(Central processing unit), and monitors a detection current detected by the current detection unit 122 and a detection voltage detected by the voltage detection unit 123 to perform a charge determination process of the battery 2. FIG. 2 is a flowchart of a battery charger charge determination process according to the present invention. Hereinafter, the main charging process will be described with reference to FIG.
【００１６】まず、必要な変数等の初期設定、出力スイ
ッチ１１２をオフする等の初期化を行う（ステップＳＴ
１０）。充電端子１４間の電圧を監視し、充電端子１４
間の電圧が一定電圧Ｖ1（充電を必要とする正常なバッ
テリの最低電圧値（これ以下なら異常）を目安にする、
バッテリ２を確認するための適切な電圧値）より高いか
否かを判定し、高ければバッテリ２が装着されたと判断
し（ステップＳＴ１１）、充電制御部１２は電源部１１
へ信号を出力し出力スイッチ１１２をオンする（ステッ
プＳＴ１２）。First, initialization such as initial setting of necessary variables and turning off the output switch 112 is performed (step ST).
10). The voltage between the charging terminals 14 is monitored.
The voltage between them is a constant voltage V 1 (using the minimum voltage value of a normal battery that needs charging (if it is lower than this, it is abnormal),
(Appropriate voltage value for checking the battery 2), and if it is higher, it is determined that the battery 2 is attached (step ST11), and the charging control unit 12
And the output switch 112 is turned on (step ST12).
【００１７】判定部１２１は電流検出部１２２の出力、
抵抗器１３を通る充電電流を読み込み、該充電電流が閾
値Ａ1より小さいか否かを判定し（ステップＳＴ１
３）、小さい場合は一度出力スイッチ１１２をオフし
（ステップＳＴ１４）、充電端子１４間の電圧が一定電
圧Ｖ1（充電を必要とする正常なバッテリの最低電圧値
（これ以下なら異常）を目安にするバッテリ２を確認す
るための適切な電圧値）より、大きいか否かを再確認し
（ステップＳＴ１５）、小さいければバッテリ２が未装
着と見做し、前記ステップＳＴ１１からの処理を繰返
す。The judging section 121 outputs the output of the current detecting section 122,
Load the charging current through the resistor 13, the charging current is determined whether the threshold value A 1 is less than or (step ST1
3) If it is smaller, the output switch 112 is turned off once (step ST14), and the voltage between the charging terminals 14 is set to a constant voltage V 1 (the lowest voltage value of a normal battery that needs charging (if it is less than this, abnormal). (Appropriate voltage value for confirming battery 2 to be set) (step ST15). If smaller, battery 2 is regarded as not mounted, and the processing from step ST11 is repeated. .
【００１８】上記端子電圧が一定電圧が前記一定電圧Ｖ
1より大きければ、再び出力スイッチ１１２をオンする
（ステップＳＴ１６）。電流検出部１２２の出力、即ち
充電電流を読み込み、閾値Ａ1より小さいか否かを判定
し（ステップＳＴ１７）、小さければ満充電と判定し出
力スイッチ１１２をオフし表示等を行い（ステップＳＴ
１８）、バッテリ２が取外されて充電端子１４間の電圧
が一定電圧Ｖ1より低くなるのを待って（ステップＳＴ
１９）ステップＳＴ１１から繰返す。When the terminal voltage is constant, the constant voltage is the constant voltage V.
If it is larger than 1 , the output switch 112 is turned on again (step ST16). The output of the current detecting unit 122, i.e. reads the charging current, and determines whether the threshold value A 1 is smaller than (step ST17), turns off the output switch 112 determines that the full-charge smaller performs display or the like (step ST
18), the battery 2 is removed by waiting for the voltage between the charging terminals 14 is lower than the constant voltage V 1 (step ST
19) Repeat from step ST11.
【００１９】前記ステップＳＴ１７で充電電流が閾値Ａ
1より大きい場合は充電を継続し、充電電流が図３の実
線ａに示すように時間と共に減少し、閾値Ａ2≦充電電
流≦閾値Ａ1の範囲になると（ステップＳＴ２０）満充
電と判定し、出力スイッチ１１２をオフし表示等を行い
（ステップＳＴ２１）、ステップＳＴ１９を実行する。
充電継続中、充電電流≦閾値Ａ2を検出するとバッテリ
２が取外されたと判断し出力スイッチ１１２をオフし
（ステップＳＴ２２）最初のステップＳＴ１１から繰返
す。In step ST17, the charging current is set to the threshold value A.
If the value is greater than 1, charging is continued, and the charging current decreases with time as shown by the solid line a in FIG. 3. When the threshold value A 2 ≤ the charging current ≤ the threshold value A 1 (step ST20), it is determined that the battery is fully charged. Then, the output switch 112 is turned off and display is performed (step ST21), and step ST19 is executed.
During continuous charging is repeated from determines that detects a charging current ≦ threshold A 2 is the battery 2 is removed off the output switch 112 (step ST22) the first step ST11.
【００２０】以上説明したように本実施例のバッテリチ
ャ−ジャ１ではバッテリ２の充電が進むに従って充電電
流が減少する特性を利用して、バッテリの装着、充電の
進行度及び満充電を検出しているためバッテリ装着検出
の為の検出スイッチ（又は装着検出端子）が必要なくな
り部品点数が減り機構設計及び加工組立が容易になる。
また、バッテリチャ−ジャ１のケ−スにスイッチ類（又
は端子類）の穴等が減り形状が簡単になり、機械的又は
静電気などの外的要因による障害にも強くなる。As described above, the battery charger 1 of this embodiment detects the mounting of the battery, the progress of the charging, and the full charge by utilizing the characteristic that the charging current decreases as the charging of the battery 2 progresses. Therefore, a detection switch (or a mounting detection terminal) for detecting the mounting of the battery is not required, so that the number of parts is reduced, and the mechanism design and the processing and assembling are facilitated.
In addition, the case of the battery charger 1 is reduced in the number of holes for switches (or terminals) and the like, so that the battery charger 1 is simplified in shape, and is more resistant to disturbances due to external factors such as mechanical or static electricity.
【００２１】[0021]
【発明の効果】以上、詳細に説明したように本発明によ
れば、下記のような優れた効果が期待される。 （１）本発明の充電電流監視型バッテリチャ−ジャで
は、バッテリの充電が進むに従って充電電流が減少する
特性を利用してバッテリの装着、充電の進行度及び満充
電を検出するので、バッテリ装着検出の為の検出スイッ
チ（又は装着検出端子）が無用となり部品点数が減り機
構設計及び加工組立が容易になり、コストダウンを図る
ことができる。As described above, according to the present invention, the following excellent effects are expected. (1) In the charging current monitoring type battery charger of the present invention, the mounting of the battery, the progress of charging, and the full charge are detected by utilizing the characteristic that the charging current decreases as the charging of the battery progresses. The use of a detection switch (or a mounting detection terminal) for detection is unnecessary, the number of parts is reduced, the mechanism design and processing and assembly are facilitated, and the cost can be reduced.
【００２２】（２）また、バッテリチャ−ジャのケ−ス
にスイッチ類（又は端子類）の穴等が減り形状が簡単に
なり、機械的又は静電気などの外的要因による障害にも
強くなる。(2) In addition, the number of holes for switches (or terminals) is reduced in the case of the battery charger, the shape is simplified, and failure due to external factors such as mechanical or static electricity is increased. .
【図１】本発明のバッテリチャ−ジャのブロック構成例
を示す図である。FIG. 1 is a diagram showing an example of a block configuration of a battery charger of the present invention.
【図２】本発明のバッテリチャ−ジャの充電判定処理の
フロ−チャ−トである。FIG. 2 is a flowchart of a charge determination process of a battery charger according to the present invention.
【図３】バッテリ充電の経過時間と充電電流の変化を示
す図である。FIG. 3 is a diagram illustrating changes in elapsed time of battery charging and charging current.
【図４】従来のバッテリチャ−ジャのブロック構成例を
示す図である。FIG. 4 is a diagram showing a block configuration example of a conventional battery charger.
【符号の説明】 １ バッテリチャ−ジャ １１ 電源部 １１１ 定電圧充電回路 １１２ 出力スイッチ １２ 充電制御部 １２１ 判定部 １２２ 電流検出部 １２３ 電圧検出部 １３ 抵抗器 １４ 充電端子 ２ バッテリ[Description of Signs] 1 Battery Charger 11 Power Supply Unit 111 Constant Voltage Charging Circuit 112 Output Switch 12 Charge Control Unit 121 Judgment Unit 122 Current Detection Unit 123 Voltage Detection Unit 13 Resistor 14 Charge Terminal 2 Battery
Claims (2)
路から定電圧を出力する電源部、バッテリの充電電流を
検出する充電電流検出部及びバッテリの電圧を検出する
電圧検出部を有する充電制御部と、バッテリを装着する
充電端子を具備し、バッテリの充電を行うバッテリチャ
ージャにおいて、 前記充電制御部は、充電開始前の前記電圧検出部で検出
された電圧から前記充電端子に該バッテリが装着された
か否かを判定し、バッテリが装着されていると判定した
場合、充電を開始し、続いて前記充電電流検出部で検出
された充電電流が所定の充電電流閾値Ａ 1 以下の場合は
一旦充電を停止して再度バッテリが装着されているか否
か判定し、バッテリが装着されていると判定される場合
には再度充電電流を確認すべく充電を再開し、充電電流
が前記充電電流閾値Ａ 1 以下の場合は満充電状態のバッ
テリが装着されていると判定する機能を具備することを
特徴とするバッテリチャージャ。1. A constant-voltage charging circuit comprising a constant-voltage charging circuit.
A charge control unit having a power supply unit that outputs a constant voltage from a road, a charge current detection unit that detects a charge current of the battery, and a voltage detection unit that detects a voltage of the battery, and a charge terminal for mounting the battery. In the battery charger for charging, the charge control unit detects the voltage by the voltage detection unit before the start of charging.
The battery is attached to the charging terminal from the applied voltage.
It is determined whether or not the battery is installed
In this case, charging is started and subsequently detected by the charging current detection unit.
If charge current if the predetermined charging current threshold A 1 or less
Stop charging and re-insert the battery
And it is determined that the battery is installed
Restarts charging to check the charging current again.
There battery charger, characterized by having a function of determining said charge current threshold A 1 or less when the battery in a fully charged state is attached.
流閾値Ａ1及びＡ2（Ａ1＞Ａ2）を設定し、前記充電電流
検出部で検出された充電電流が該充電電流閾値Ａ1 以下
で該充電電流閾値Ａ2 以上のときは充電完了と判定し、
更に該充電電流閾値Ａ2 以下のときは前記バッテリが前
記充電端子から脱離されたと判定する機能を具備するこ
とを特徴とする請求項１に記載のバッテリチャージャ。2. The charging control unit sets two predetermined charging current thresholds A 1 and A 2 (A 1 > A 2 ), and the charging current detected by the charging current detecting unit is set to the charging current threshold. A 1 or less
Determines that charging is completed in time the charging current threshold A 2 or more,
Furthermore when the charging current threshold A 2 below the battery before
The battery charger according to claim 1, further comprising a function of determining that the battery has been detached from the charging terminal .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33298794A JP3270982B2 (en) | 1994-12-13 | 1994-12-13 | Battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33298794A JP3270982B2 (en) | 1994-12-13 | 1994-12-13 | Battery charger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08167432A JPH08167432A (en) | 1996-06-25 |
| JP3270982B2 true JP3270982B2 (en) | 2002-04-02 |
Family
ID=18261043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33298794A Expired - Lifetime JP3270982B2 (en) | 1994-12-13 | 1994-12-13 | Battery charger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3270982B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018152285A (en) * | 2017-03-14 | 2018-09-27 | 株式会社東芝 | Battery pack |
-
1994
- 1994-12-13 JP JP33298794A patent/JP3270982B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08167432A (en) | 1996-06-25 |
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