JPH08186906A - Assembled battery charge controller - Google Patents

Assembled battery charge controller

Info

Publication number
JPH08186906A
JPH08186906A JP6341026A JP34102694A JPH08186906A JP H08186906 A JPH08186906 A JP H08186906A JP 6341026 A JP6341026 A JP 6341026A JP 34102694 A JP34102694 A JP 34102694A JP H08186906 A JPH08186906 A JP H08186906A
Authority
JP
Japan
Prior art keywords
circuit
voltage
battery
control circuit
overvoltage detection
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.)
Pending
Application number
JP6341026A
Other languages
Japanese (ja)
Inventor
Yasutake Ishikawa
泰毅 石川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP6341026A priority Critical patent/JPH08186906A/en
Publication of JPH08186906A publication Critical patent/JPH08186906A/en
Pending legal-status Critical Current

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
    • 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
    • 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
    • Y02T10/72—Electric energy management in electromobility

Landscapes

  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Charge By Means Of Generators (AREA)

Abstract

PURPOSE: To efficiently charge batteries for forming assembled battery at the time of regenerating a motor. CONSTITUTION: When the regenerating operation of a motor 7 is started, unit cells are charged by currents flowing from an inverter 6 to an assembled battery. When the terminal voltage of any of the cells exceeds an overvoltage detection level, a monostable multivibrator 101 is triggered via an OR circuit 21 to output a positive pulse signal. A braking transistor Tr2 is not turned on while the pulse signal is output, and the terminal voltage of the each cell is continuously raised. When the signal is not output, the transistor Tr2 is turned on, and a current from the inverter 6 flows through a braking resistor R9. Thus, even if the terminal voltage of the cell is lowered by the voltage drop of the internal resistance of the cell at the time of finishing the regeneration of the motor 7, the terminal voltage of the cell is not almost lowered as prior art.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】充電可能な複数の電池を直列に接
続して構成される組電池の充電を制御する組電池充電制
御回路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembled battery charge control circuit for controlling charging of an assembled battery composed of a plurality of rechargeable batteries connected in series.

【０００２】[0002]

【従来の技術】電気自動車は、バッテリの電力を用いて
モータを駆動し、モータの駆動力によって走行する。モ
ータを駆動するにはかなりの高電圧を必要とするため、
数多くの電池を直列に接続した組電池をバッテリとして
使用するようにし、組電池の充電を制御する組電池充電
制御回路を備えた電気自動車が知られている。2. Description of the Related Art An electric vehicle drives a motor by using electric power of a battery and travels by a driving force of the motor. It requires a fairly high voltage to drive the motor,
2. Description of the Related Art There is known an electric vehicle including an assembled battery charging control circuit that controls charging of the assembled battery by using an assembled battery in which a large number of batteries are connected in series as a battery.

【０００３】図５はこの種の組電池充電制御回路のブロ
ック図である。図５において、１１〜１ｎは組電池１を
構成する電池群であり、充電可能な複数の電池が直列に
接続されている。以下では、組電池１を構成する各電池
を単セルと呼ぶ。２は組電池１を充電するための充電器
である。充電器２と組電池１の間にはリレーの接点３が
設けられ、この接点３が閉じると充電器２からの充電電
流が組電池１に供給されて各単セルの充電が行われる。
４は単セルの端子電圧が規定の電圧を超えて過電圧にな
ったことを検出する過電圧検出回路であり、各単セルご
とに設けられる。５は、過電圧検出回路４によって過電
圧になったことが検出されたときに、その単セルに充電
電流が流れないように充電電流をバイパスするバイパス
回路であり、やはり各単セルごとに設けられている。６
は組電池全体の電圧を交流電圧に変換するインバータで
あり、このインバータからの交流電圧によってモータ７
が駆動される。FIG. 5 is a block diagram of a battery pack charge control circuit of this type. In FIG. 5, 11 to 1n are battery groups that constitute the assembled battery 1, and a plurality of rechargeable batteries are connected in series. Below, each battery which comprises the assembled battery 1 is called a single cell. Reference numeral 2 is a charger for charging the assembled battery 1. A contact 3 of a relay is provided between the charger 2 and the assembled battery 1, and when the contact 3 is closed, a charging current from the charger 2 is supplied to the assembled battery 1 to charge each single cell.
Reference numeral 4 is an overvoltage detection circuit for detecting that the terminal voltage of a single cell exceeds a specified voltage and becomes an overvoltage, and is provided for each single cell. Reference numeral 5 denotes a bypass circuit for bypassing the charging current so that the charging current does not flow in the unit cell when the overvoltage detection circuit 4 detects that the unit cell is overvoltage, and is also provided for each unit cell. There is. 6
Is an inverter that converts the voltage of the entire assembled battery into an AC voltage. The AC voltage from this inverter causes the motor 7
Is driven.

【０００４】図６は図５に示す過電圧検出回路４の内部
構成を示す回路図であり、抵抗Ｒ１およびツェナーダイ
オードＤ１から成る基準電圧発生回路８と、抵抗Ｒ２，
Ｒ３から成る電圧検出回路９と、コンパレータＯＰ１
と、コンパレータＯＰ１の出力レベルの調整を行う抵抗
Ｒ４，Ｒ５とから成る。一方、図７は図５に示すバイパ
ス回路５の内部構成を示す回路図であり、オペアンプＯ
Ｐ２と、トランジスタＴＲ１と、電流検出抵抗Ｒ６と、
帰還抵抗Ｒ７，Ｒ８とから成る。FIG. 6 is a circuit diagram showing an internal configuration of the overvoltage detection circuit 4 shown in FIG. 5, in which a reference voltage generating circuit 8 including a resistor R1 and a Zener diode D1 and a resistor R2.
A voltage detection circuit 9 composed of R3 and a comparator OP1
And resistors R4 and R5 for adjusting the output level of the comparator OP1. On the other hand, FIG. 7 is a circuit diagram showing the internal configuration of the bypass circuit 5 shown in FIG.
P2, a transistor TR1, a current detection resistor R6,
It consists of feedback resistors R7 and R8.

【０００５】このように構成された従来の組電池充電制
御回路では、リレーの接点３を閉じると、充電器２から
の電流が組電池１に供給され、各単セル１１〜１ｎの充
電が開始される。一部の単セルが満充電状態になると、
満充電になった単セルに対応する過電圧検出回路４の内
部にあるコンパレータＯＰ１の出力がローレベルからハ
イレベルに変化し、これにより、バイパス回路５内部の
オペアンプＯＰ２の出力が反転してトランジスタＴＲ１
がオンし、充電器２からの充電電流は単セルに流れずに
トランジスタＴＲ１に流れる。以上の動作により、単セ
ルの過充電を防止する。In the conventional battery pack charging control circuit thus configured, when the contact 3 of the relay is closed, the current from the charger 2 is supplied to the battery pack 1 and the charging of each single cell 11 to 1n is started. To be done. When some single cells are fully charged,
The output of the comparator OP1 inside the overvoltage detection circuit 4 corresponding to the fully charged single cell changes from the low level to the high level, whereby the output of the operational amplifier OP2 inside the bypass circuit 5 is inverted and the transistor TR1 is inverted.
Is turned on, and the charging current from the charger 2 does not flow in the single cell but flows in the transistor TR1. The above operation prevents overcharge of the single cell.

【０００６】[0006]

【発明が解決しようとする課題】一方、電気自動車に用
いられるモータは発電機と同じ構造を有するため、モー
タに対して駆動方向と逆方向に力を加えると電力（回生
エネルギー）を発生する。そこで、電気自動車は通常、
モータが減速する際の回生エネルギーを利用してバッテ
リ（組電池）の再充電を行っている。On the other hand, since a motor used in an electric vehicle has the same structure as a generator, when a force is applied to the motor in a direction opposite to the driving direction, electric power (regenerative energy) is generated. So electric cars are usually
The battery (assembled battery) is recharged using the regenerative energy when the motor decelerates.

【０００７】ところが、モータの回生動作時間が長い場
合には組電池が過充電されるおそれがある。そこで、図
８に示すように、回生時に余剰となった充電電流をバイ
パスさせる回生バイバス回路２０を組電池充電制御回路
に付加することが考えられる。図示のように、回生バイ
パス回路２０は、オア回路２１と、制動トランジスタＴ
ｒ２と、制動抵抗Ｒ９とから成る。However, when the regenerative operation time of the motor is long, the assembled battery may be overcharged. Therefore, as shown in FIG. 8, it is conceivable to add a regenerative bypass bus circuit 20 that bypasses an excessive charging current during regeneration to the assembled battery charging control circuit. As shown, the regenerative bypass circuit 20 includes an OR circuit 21 and a braking transistor T.
It consists of r2 and a braking resistor R9.

【０００８】図９（ａ）は組電池１を構成する各単セル
１１〜１ｎの電圧変化を示す図、図９（ｂ）は制動トラ
ンジスタＴｒ２のオン・オフ変化を示す図であり、以下
これらの図に基づいて図８の組電池充電制御回路の動作
を説明する。図９の時間ｔ１でモータ７の回生動作が開
始されると、その時点で単セル１１〜１ｎの電圧は急上
昇する。これは、回生動作の開始によって各単セル１１
〜１ｎに充電電流が流れ、この電流によって各単セル１
１〜１ｎの内部抵抗（不図示）の両端に電圧が発生する
からである。このように、回生期間中は単セルの端子電
圧が見かけ上高く検出される。FIG. 9 (a) is a diagram showing a voltage change of each of the unit cells 11 to 1n constituting the assembled battery 1, and FIG. 9 (b) is a diagram showing an on / off change of the braking transistor Tr2. The operation of the battery pack charge control circuit of FIG. 8 will be described based on FIG. When the regenerative operation of the motor 7 is started at time t1 in FIG. 9, the voltages of the single cells 11 to 1n suddenly increase at that time. This is because each unit cell 11
Charging current flows to ~ 1n, and this current causes each single cell 1
This is because a voltage is generated across both ends of the internal resistance (not shown) of 1 to 1n. In this way, the terminal voltage of the single cell is apparently detected high during the regeneration period.

【０００９】その後、時間ｔ２になると、一部の単セル
の端子電圧が過電圧検出レベルＶ１を超え、その単セル
の過電圧検出回路４は過電圧検出信号を出力する。そし
て、オア回路２１の出力がハイレベルになり、制動トラ
ンジスタＴｒ２はオンに変化する（図８参照）。これに
より、インバータ回路６からの充電電流は制動抵抗Ｒ９
を通って流れ、その分だけ組電池１に流れる電流量が減
少する。したがって、各単セル１１〜１ｎの内部抵抗に
よる電圧降下も減少し、各単セル１１〜１ｎの端子電圧
は低下する。After that, at time t2, the terminal voltage of some of the unit cells exceeds the overvoltage detection level V1, and the overvoltage detection circuit 4 of the unit cell outputs an overvoltage detection signal. Then, the output of the OR circuit 21 becomes high level, and the braking transistor Tr2 is turned on (see FIG. 8). As a result, the charging current from the inverter circuit 6 is applied to the braking resistor R9.
And the amount of current flowing through the assembled battery 1 is reduced by that amount. Therefore, the voltage drop due to the internal resistance of each of the unit cells 11 to 1n also decreases, and the terminal voltage of each of the unit cells 11 to 1n decreases.

【００１０】時間ｔ３になると、いったん過電圧検出レ
ベルを越えた単セルの端子電圧が電圧Ｖ２を下回り、制
動トランジスタＴｒ２がオフするため、インバータ６か
らの充電電流は再度単セルに流れる。以上の動作が回生
期間中繰り返される。At time t3, the terminal voltage of the unit cell once exceeding the overvoltage detection level falls below the voltage V2, and the braking transistor Tr2 is turned off, so that the charging current from the inverter 6 flows into the unit cell again. The above operation is repeated during the regeneration period.

【００１１】ところが、モータの回生動作が終了すると
インバータ回路６から各単セル１１〜１ｎに充電電流が
流れなくなるため、各単セル１１〜１ｎの内部抵抗によ
る電圧降下もなくなり、その分だけ各単セル１１〜１ｎ
の電圧は低くなる（時間ｔ４）。時間ｔ４での単セルの
端子電圧は満充電状態を示す電圧値Ｖ２よりも低く、単
セルは実際には満充電になっていないことを示してい
る。このように、図８に示すような従来の組電池充電制
御回路では、モータの回生動作時には各単セルを満充電
することはできない。一方、充電器を用いて各単セルを
充電する場合には、満充電近くになると充電電流を少な
くするような制御を行うため、内部抵抗による電圧降下
を少なくでき、上記のような間題は起きない。However, when the regenerative operation of the motor is completed, the charging current stops flowing from the inverter circuit 6 to each of the unit cells 11 to 1n, so that the voltage drop due to the internal resistance of each of the unit cells 11 to 1n also disappears, and each unit cell is accordingly reduced. Cells 11 to 1n
Becomes low (time t4). The terminal voltage of the single cell at time t4 is lower than the voltage value V2 indicating the fully charged state, which indicates that the single cell is not actually fully charged. As described above, in the conventional battery pack charge control circuit as shown in FIG. 8, each single cell cannot be fully charged during the regenerative operation of the motor. On the other hand, when charging each single cell using the charger, the control is performed so that the charging current is reduced when it is close to full charge, so the voltage drop due to the internal resistance can be reduced, and the above problem is Don't get up

【００１２】本発明の目的は、組電池を構成する各電池
をモータの回生時に効率よく充電するようにした組電池
充電制御回路を提供することにある。It is an object of the present invention to provide an assembled battery charging control circuit which efficiently charges each battery constituting the assembled battery when the motor is regenerated.

【００１３】[0013]

【課題を解決するための手段】実施例を示す図１に対応
づけて本発明を説明すると、本発明は、充電可能な複数
の電池を直列に接続して構成される組電池１と、組電池
１を構成する電池ごとに設けられ、電池の端子電圧が充
電時に所定電圧以上になると過電圧検出信号を出力する
過電圧検出回路４と、過電圧検出回路４ごとに設けら
れ、過電圧検出信号を出力した過電圧検出回路４に対応
する電池への充電電流をバイパスする第１のバイパス回
路５と、組電池１に並列に接続され、組電池全体の電圧
に基づいてモータ７を駅動するとともに、モータ７の回
生時には組電池１に充電電流を供給するインバータ回路
とを備えた組電池充電制御回路に適用され、組電池１に
並列に接続され、モータ７の回生時に組電池１を構成す
る各電池の端子電圧が所定電圧以上にならないようにイ
ンバータ回路６からの充電電流をバイパスする第２のバ
イパス回路Ｒ９と、モータ７の回生時にいずれかの過電
圧検出回路４が過電圧検出信号を出力してから所定時間
が経過するまで第２のバイパス回路Ｒ９の作動を禁止す
るバイパス制御回路とを備えることにより、上記目的は
達成される。請求項２に記載の発明は、請求項１に記載
された組電池充電制御回路において、モータ７の回生終
了時には各電池の内部抵抗による電圧降下の減少分だけ
各電池の端子電圧が低下することを考慮に入れ、モータ
７の回生終了時に各電池の端子電圧が所定電圧に近づく
ように所定時間を規定するようにバイパス制御回路Ｔｒ
２を構成するものである。請求項３に記載の発明は、請
求項１または２に記載された組電池充電制御回路におい
て、いずれかの過電圧検出回路４から過電圧検出信号が
出力されると、所定幅のパルス信号を出力する単安定マ
ルチバイブレータ１０１を備え、単安定マルチバイブレ
ータ１０１からパルス信号が出力されている期間内は第
２のバイパス回路Ｒ９の作動を禁止するようにバイパス
制御回路Ｔｒ２を構成するものである。請求項４に記載
の発明は、請求項１または２に記載された組電池充電制
御回路において、過電圧検出信号を出力した過電圧検出
回路４に対応する電池の電圧がさらに所定の基準電圧ま
で上昇すると第２のバイパス回路Ｒ９の作動を許可する
ようにバイパス制御回路Ｔｒ２を構成するものである。
請求項５に記載の発明は、請求項１または２に記載され
た組電池充電制御回路において、組電池全体の電圧を検
出する電圧検出回路１０４と、いずれかの過電圧検出回
路４から最も早く過電圧検出信号が出力されたときに電
圧検出回路１０４によって検出された電圧に、所定の基
準電圧を加算する加算回路１０６と、電圧検出回路１０
４によって検出された電圧値が加算回路１０６による加
算結果値を上回ったか否かを判定する比較回路１０７と
を備え、比較回路１０７によって上回ったと判定される
と第２のバイパス回路Ｒ９の作動を許可するようにバイ
パス制御回路Ｔｒ２を構成するものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to FIG. 1 showing an embodiment. The present invention is directed to an assembled battery 1 constructed by connecting a plurality of rechargeable batteries in series and an assembled battery. An overvoltage detection circuit 4 that is provided for each battery that constitutes the battery 1 and that outputs an overvoltage detection signal when the terminal voltage of the battery becomes a predetermined voltage or higher during charging, and an overvoltage detection circuit 4 that is provided for each overvoltage detection circuit 4 and outputs an overvoltage detection signal The first bypass circuit 5 for bypassing the charging current to the battery corresponding to the overvoltage detection circuit 4 is connected in parallel to the assembled battery 1, and the motor 7 is operated based on the voltage of the entire assembled battery. It is applied to an assembled battery charging control circuit including an inverter circuit that supplies a charging current to the assembled battery 1 during regeneration, and is connected in parallel to the assembled battery 1 and is connected to the assembled battery 1 in parallel during regeneration of the motor 7. Terminal voltage A second bypass circuit R9 that bypasses the charging current from the inverter circuit 6 so that the voltage does not exceed a predetermined voltage, and a predetermined time elapses after one of the overvoltage detection circuits 4 outputs an overvoltage detection signal during regeneration of the motor 7. The above object is achieved by including a bypass control circuit that inhibits the operation of the second bypass circuit R9 until that time. According to a second aspect of the present invention, in the battery pack charge control circuit according to the first aspect, when the regeneration of the motor 7 is completed, the terminal voltage of each battery is reduced by a reduction amount of the voltage drop due to the internal resistance of each battery. In consideration of the above, when the regeneration of the motor 7 is completed, the bypass control circuit Tr is defined so as to regulate the predetermined time so that the terminal voltage of each battery approaches the predetermined voltage.
2 is configured. According to a third aspect of the present invention, in the battery pack charge control circuit according to the first or second aspect, when an overvoltage detection signal is output from any of the overvoltage detection circuits 4, a pulse signal having a predetermined width is output. The monostable multivibrator 101 is provided, and the bypass control circuit Tr2 is configured to prohibit the operation of the second bypass circuit R9 during the period in which the pulse signal is output from the monostable multivibrator 101. According to a fourth aspect of the present invention, in the battery pack charge control circuit according to the first or second aspect, when the voltage of the battery corresponding to the overvoltage detection circuit 4 that outputs the overvoltage detection signal further rises to a predetermined reference voltage. The bypass control circuit Tr2 is configured to permit the operation of the second bypass circuit R9.
The invention according to claim 5 is the assembled battery charge control circuit according to claim 1 or 2, in which the voltage detection circuit 104 for detecting the voltage of the entire assembled battery and the overvoltage detection circuit 4 from any one of the overvoltage detection circuits are the earliest. An adder circuit 106 for adding a predetermined reference voltage to the voltage detected by the voltage detection circuit 104 when the detection signal is output, and the voltage detection circuit 10.
4 is provided with a comparison circuit 107 that determines whether or not the voltage value detected by 4 exceeds the addition result value by the addition circuit 106, and when the comparison circuit 107 determines that the voltage value exceeds the addition result value, the operation of the second bypass circuit R9 is permitted. The bypass control circuit Tr2 is configured to do so.

【００１４】[0014]

【作用】請求項１に記載の発明では、モータ７の回生時
にいずれかの過電圧検出回路４が過電圧検出信号を出力
してから所定時間が経過するまではインバータからの充
電電流を各電池に供給し、所定時間を経過した後は第２
のバイパス回路Ｒ９を作動させてインバータからの充電
電流を各電池に供給せずにバイパスする。請求項２に記
載の発明では、モータ７の回生が終了すると各電池の内
部抵抗による電圧降下の減少分だけ各電池の端子電圧が
低下することを考慮に入れて第２のバイパス回路Ｒ９を
作動させる時期を決定する。請求項３に記載の発明で
は、過電圧検出信号が出力されると単安定マルチバイブ
レータ１０１からパルス信号を出力させ、パルス信号が
出力されている期間内は各電池の充電を継続して行う。
請求項４に記載の発明では、過電圧状態になった電池の
端子電圧がさらに所定の基準電圧まで上昇するまではそ
の電池の充電を継続して行う。請求項５に記載の発明で
は、過電圧検出信号が最も早く出力された時点での組電
池全体の電圧に所定の基準電圧を加算した電圧値より
も、組電池全体の電圧が高くなるまでは各電池の充電を
継続して行う。According to the first aspect of the invention, the charging current from the inverter is supplied to each battery until a predetermined time elapses after the overvoltage detection circuit 4 outputs the overvoltage detection signal when the motor 7 is regenerated. However, after the predetermined time has passed, the second
By activating the bypass circuit R9, the charging current from the inverter is bypassed without being supplied to each battery. In the invention described in claim 2, the second bypass circuit R9 is operated in consideration of the fact that when the regeneration of the motor 7 is completed, the terminal voltage of each battery decreases by the amount of the decrease in the voltage drop due to the internal resistance of each battery. Decide when to make it. According to the third aspect of the invention, when the overvoltage detection signal is output, the monostable multivibrator 101 outputs a pulse signal, and each battery is continuously charged during the period when the pulse signal is output.
In the invention according to claim 4, the battery is continuously charged until the terminal voltage of the battery in the overvoltage state further rises to a predetermined reference voltage. In the invention according to claim 5, the voltage of the entire battery pack is higher than the voltage value obtained by adding a predetermined reference voltage to the voltage of the whole battery pack at the time when the overvoltage detection signal is output earliest. Continue to charge the battery.

【００１５】なお、本発明の構成を説明する上記課題を
解決するための手段と作用の項では、本発明を分かり易
くするために実施例の図を用いたが、これにより本発明
が実施例に限定されるものではない。Incidentally, in the section of means and action for solving the above-mentioned problems for explaining the constitution of the present invention, the drawings of the embodiments are used in order to make the present invention easy to understand. It is not limited to.

【００１６】[0016]

【実施例】【Example】

−第１の実施例− 図１は本発明による組電池充電制御回路の第１の実施例
のブロック図である。図１では、図８と共通する構成部
分には同一符号を付しており、以下では相違点を中心に
説明する。図１において、１０１は単安定マルチバイブ
レータであり、オア回路２１の出力がハイレベルになる
と所定期間だけ正のパルス信号を出力する。パルス信号
のパルス幅は、組電池の内部抵抗による電圧降下分を補
償できる程度の幅とされている。すなわち、モータ７の
回生動作が終了したときに生じる電圧降下によって単セ
ルの端子電圧があまりに低くならないようにパルス幅が
設定される。-First Embodiment- Fig. 1 is a block diagram of a first embodiment of an assembled battery charging control circuit according to the present invention. In FIG. 1, the same components as those in FIG. 8 are denoted by the same reference numerals, and the differences will be mainly described below. In FIG. 1, 101 is a monostable multivibrator, which outputs a positive pulse signal for a predetermined period when the output of the OR circuit 21 becomes high level. The pulse width of the pulse signal is set so that the voltage drop due to the internal resistance of the battery pack can be compensated. That is, the pulse width is set so that the terminal voltage of the single cell does not become too low due to the voltage drop that occurs when the regenerative operation of the motor 7 ends.

【００１７】１０２は単安定マルチバイブレータ１０１
から出力されたパルス信号を反転するインバータ、１０
３はオア回路２１の出力とインバータ１０２の出力との
論理積を演算するアンド回路であり、その出力は制動ト
ランジスタＴｒ２のベース端子に入力される。Reference numeral 102 is a monostable multivibrator 101.
An inverter for inverting the pulse signal output from the inverter, 10
An AND circuit 3 calculates the logical product of the output of the OR circuit 21 and the output of the inverter 102, and its output is input to the base terminal of the braking transistor Tr2.

【００１８】図２（ａ）は組電池１を構成する各単セル
１１〜１ｎの端子電圧の時間的変化を示す図、図２
（ｂ）は制動トランジスタＴｒ２のエミッタ電流の変化
を示す図、図２（ｃ）は単安定マルチバイブレータ１０
１の出力変化を示す図であり、以下これらの図に基づい
て第１の実施例の動作を説明する。FIG. 2 (a) is a diagram showing a temporal change of the terminal voltage of each of the unit cells 11 to 1n constituting the assembled battery 1, FIG.
2B is a diagram showing changes in the emitter current of the braking transistor Tr2, and FIG. 2C is a monostable multivibrator 10
3 is a diagram showing the output change of No. 1 and the operation of the first embodiment will be described below based on these diagrams.

【００１９】図２の時間ｔ１でモータ７が回生動作を開
始すると、インパータ６から組電池１に向かって充電電
流が流れる。この電流は各単セル１１〜１ｎの内部抵抗
（不図示）にも流れ、各単セルの端子電圧は図２（ａ）
に示すように急上昇する。時間ｔ２になると、いずれか
の単セルの端子電圧が電圧Ｖ１を超え、その単セルに対
応する過電圧検出回路４はハイレベルの過電圧検出信号
を出力する。これにより、オア回路２１を介して単安定
マルチバイブレータ１０１がトリガされ、単安定マルチ
バイブレータ１０１から正のパルス信号が出力される
（図２（ｃ）参照）。When the motor 7 starts the regenerative operation at time t1 in FIG. 2, a charging current flows from the impacter 6 toward the assembled battery 1. This current also flows through the internal resistance (not shown) of each unit cell 11 to 1n, and the terminal voltage of each unit cell is shown in FIG.
Soars as shown in. At time t2, the terminal voltage of one of the unit cells exceeds the voltage V1, and the overvoltage detection circuit 4 corresponding to the unit cell outputs a high level overvoltage detection signal. As a result, the monostable multivibrator 101 is triggered via the OR circuit 21, and a positive pulse signal is output from the monostable multivibrator 101 (see FIG. 2C).

【００２０】単安定マルチバイブレータ１０１が正のパ
ルス信号を出力している間は、アンド回路１０３の出力
はローレベルの状態を維持するため、制動トランジスタ
Ｔｒ２はオフ状態を維持し、制動抵抗Ｒ９には電流は流
れない。したがって、各単セル１１〜１ｎの端子電圧は
過電圧検出レベルＶ１よりもさらに上昇する（図２の時
間ｔ２〜ｔ３）。While the monostable multivibrator 101 outputs a positive pulse signal, the output of the AND circuit 103 maintains the low level state, so that the braking transistor Tr2 maintains the off state and the braking resistor R9 is applied. Does not flow current. Therefore, the terminal voltage of each of the unit cells 11 to 1n further rises above the overvoltage detection level V1 (time t2 to t3 in FIG. 2).

【００２１】時間ｔ３になると、単安定マルチバイブレ
ータ１０１の出力がローレベルになり、それに伴ってア
ンド回路１０３の出力がハイレベルに変化する。これに
より、制動トランジスタＴｒ２がオンし（図２（ｂ）参
照）、インバータ６からの充電電流の一部は制動抵抗Ｒ
９を流れる。したがって、組電池１に流れる充電電流量
が少なくなり、それに伴って各単セル１１〜１ｎの内部
抵抗による電圧降下も小さくなるため、その分だけ各単
セル１１〜１ｎの端子電圧は低下する。At time t3, the output of the monostable multivibrator 101 becomes low level, and accordingly, the output of the AND circuit 103 changes to high level. As a result, the braking transistor Tr2 is turned on (see FIG. 2B), and a part of the charging current from the inverter 6 is applied to the braking resistor R2.
Flow through 9. Therefore, the amount of charging current flowing through the assembled battery 1 is reduced, and the voltage drop due to the internal resistance of each of the unit cells 11 to 1n is accordingly reduced, so that the terminal voltage of each of the unit cells 11 to 1n is reduced accordingly.

【００２２】時間ｔ４になると、各単セル１１〜１ｎの
端子電圧が電圧Ｖ２よりも低くなってオア回路２１の出
力がローレベルに変化し、制動トランジスタＴｒ２はオ
フして再度各単セル１１〜１ｎの充電が開始される。At time t4, the terminal voltage of each of the unit cells 11 to 1n becomes lower than the voltage V2, the output of the OR circuit 21 changes to the low level, the braking transistor Tr2 is turned off, and each of the unit cells 11 to 11 is restarted. Charging of 1n is started.

【００２３】時間ｔ５の時点でモータ７の回生動作が停
止したとすると、インバータ６からの充電電流が流れな
くなり、各単セル１１〜１ｎの端子電圧は内部抵抗によ
る電圧降下分だけ低下する。しかし、図２（ａ）に示す
ように、電圧Ｖ２付近までしか下がらず、各単セルはほ
ぼ満充電状態に維持される。If the regenerative operation of the motor 7 is stopped at the time t5, the charging current from the inverter 6 stops flowing, and the terminal voltage of each of the unit cells 11 to 1n decreases by the amount of the voltage drop due to the internal resistance. However, as shown in FIG. 2A, the voltage drops only to the vicinity of the voltage V2, and each single cell is maintained in a substantially fully charged state.

【００２４】このように、第１の実施例では、過電圧検
出回路４によって単セルの過電圧が検出されても、すぐ
には充電電流を制動抵抗Ｒ９にバイパスさせず、しばら
くの間は継続して各単セル１１〜１ｎに充電電流を流す
ようにしたため、モータ７の回生動作が停止したときに
単セルの内部抵抗による電圧降下分だけ単セルの端子電
圧が低下しても、各単セル１１〜１ｎの端子電圧を高く
維持することができる。As described above, in the first embodiment, even if the overvoltage of the single cell is detected by the overvoltage detection circuit 4, the charging current is not immediately bypassed to the braking resistor R9, and it continues for a while. Since the charging current is made to flow through each of the unit cells 11 to 1n, even if the terminal voltage of each unit cell drops by the voltage drop due to the internal resistance of the unit cell when the regenerative operation of the motor 7 is stopped, each unit cell 11 A terminal voltage of ~ 1n can be maintained high.

【００２５】また、過電圧検出回路４が単セルの過電圧
を検出した時点から所定時間だけ制動抵抗Ｒ９に充電電
流を流さないようにするため、各単セル１１〜１ｎを過
充電し過ぎるおそれはない。上記第１の実施例におい
て、単安定マルチバイブレータ１０１のパルス幅を設定
・変更できるようにしてもよい。Further, since the charging current does not flow through the braking resistor R9 for a predetermined time from the time when the overvoltage detecting circuit 4 detects the overvoltage of the single cell, there is no possibility of overcharging each of the single cells 11 to 1n. . In the first embodiment, the pulse width of the monostable multivibrator 101 may be set / changed.

【００２６】−第２の実施例− 第２の実施例は、充電電流をバイパスさせるか否かを組
電池全体の電圧によって決定するものである。図３は組
電池充電制御回路の第２の実施例の回路図である。図３
では、図１と共通する構成部分には同一符号を付してお
り、以下では相違点を中心に説明する。図３において、
１０４は組電池全体の電圧を検出する電圧検出回路であ
り、組電池１と並列に接続されている。１０５は電圧検
出回路１０４によって検出された電圧をサンプルホール
ドするサンプルホールド回路（以下、Ｓ／Ｈ回路と呼
ぶ）である。Ｓ／Ｈ回路１０５は、オア回路２１の出力
がハイレベルになった時点、すなわちいずれかの過電圧
検出回路４から最も早くに過電圧検出信号が出力された
ときに電圧検出回路１０４の出力をサンプルホールドす
る。-Second Embodiment- In the second embodiment, whether or not to bypass the charging current is determined by the voltage of the entire assembled battery. FIG. 3 is a circuit diagram of a second embodiment of the battery pack charge control circuit. FIG.
Then, the same components as those in FIG. 1 are denoted by the same reference numerals, and the differences will be mainly described below. In FIG.
A voltage detection circuit 104 detects the voltage of the entire assembled battery, and is connected in parallel with the assembled battery 1. Reference numeral 105 denotes a sample hold circuit (hereinafter referred to as an S / H circuit) that samples and holds the voltage detected by the voltage detection circuit 104. The S / H circuit 105 samples and holds the output of the voltage detection circuit 104 at the time when the output of the OR circuit 21 becomes high level, that is, when the overvoltage detection signal is output earliest from any of the overvoltage detection circuits 4. To do.

【００２７】１０６はＳ／Ｈ回路１０５によってサンプ
ルホールドされた電圧値に所定の電圧値を加算する加算
器である。１０７は加算器１０６の出力と電圧検出回路
１０４の出力とを比較するコンパレータであり、両者が
一致するとハイレベルの信号を出力する。１０８はコン
パレータ１０７の出力とオア回路２１の出力との論理積
を演算するアンド回路であり、その出力は制動トランジ
スタＴｒ２のベース端子に接続される。Reference numeral 106 denotes an adder for adding a predetermined voltage value to the voltage value sampled and held by the S / H circuit 105. Reference numeral 107 denotes a comparator that compares the output of the adder 106 and the output of the voltage detection circuit 104, and outputs a high-level signal when they match. An AND circuit 108 calculates the logical product of the output of the comparator 107 and the output of the OR circuit 21, and its output is connected to the base terminal of the braking transistor Tr2.

【００２８】図４（ａ）は組電池全体の電圧の時間的変
化を示す図、図４（ｂ）は組電池１を構成する各単セル
１１〜１ｎの端子電池の時間的変化を示す図、図４
（ｃ）はアンド回路１０８の出力の時間的変化を示す図
であり、以下これらの図に基づいて第２の実施例の動作
を説明する。時間ｔ１でモータ７は回生動作を開始し、
インバータ６から組電池１に向かって充電電流が流れ、
この電流によって組電池１を構成する各単セル１１〜１
ｎは充電される。時間ｔ２になると、いずれかの単セル
が過電圧状態になり、オア回路２１の出力はハイレベル
に変化する。そして、オア回路２１の出力がハイレベル
に変化した時点で組電池１の電圧はＳ／Ｈ回路１０５に
よってサンプルホールドされる。加算器１０６はＳ／Ｈ
回路１０５でサンプルホールドした値に所定電圧値を加
算した電圧値を出力する。この時点では、制動トランジ
スタＴｒ２はオフしているため、充電電流は制動抵抗Ｒ
９に流れず、組電池１に流れる。したがって、各単セル
１１〜１ｎの端子電圧は次第に上昇する（図４（ａ）の
時間ｔ１〜ｔ２）。FIG. 4 (a) is a diagram showing the change over time of the voltage of the whole assembled battery, and FIG. 4 (b) is a diagram showing the change over time of the terminal batteries of the individual cells 11 to 1n constituting the assembled battery 1. , Fig. 4
(C) is a diagram showing a temporal change in the output of the AND circuit 108, and the operation of the second embodiment will be described below based on these diagrams. At time t1, the motor 7 starts regenerative operation,
A charging current flows from the inverter 6 to the assembled battery 1,
Each single cell 11 to 1 that constitutes the assembled battery 1 by this current
n is charged. At time t2, one of the unit cells is in the overvoltage state, and the output of the OR circuit 21 changes to the high level. Then, when the output of the OR circuit 21 changes to a high level, the voltage of the assembled battery 1 is sampled and held by the S / H circuit 105. The adder 106 is S / H
A voltage value obtained by adding a predetermined voltage value to the value sampled and held by the circuit 105 is output. At this point, the braking transistor Tr2 is off, so the charging current is equal to the braking resistance R
It does not flow to 9, but to the assembled battery 1. Therefore, the terminal voltage of each of the unit cells 11 to 1n gradually increases (time t1 to t2 in FIG. 4A).

【００２９】時間ｔ３になると、組電池全体の電圧が電
圧Ｖ３を超え、コンパレータ１０７の出力はハイレベル
に変化する。そして、アンド回路１０８の出力もハイレ
ベルに変化し、制動トランジスタＴｒ２がオンして制動
抵抗Ｒ９に充電電流が流れる。このため、組電池１に流
れる充電電流が減少し、それに伴って各単セル１１〜１
ｎの端子電圧も低下する。At time t3, the voltage of the entire assembled battery exceeds the voltage V3, and the output of the comparator 107 changes to high level. Then, the output of the AND circuit 108 also changes to the high level, the braking transistor Tr2 is turned on, and the charging current flows through the braking resistor R9. Therefore, the charging current flowing in the assembled battery 1 is reduced, and accordingly, each of the unit cells 11 to 1 is
The terminal voltage of n also drops.

【００３０】時間ｔ４になると、時間ｔ２で満充電状態
になった単セルの端子電圧は電圧Ｖ２以下になリ、オア
回路２１の出力がローレベルに変化して制動トランジス
タＴｒ２はオフする。これにより、インバータ６からの
充電電流は制動抵抗Ｒ９に流れなくなり、再度各単セル
１１〜１ｎの充電が開始される。時間ｔ５の時点でモー
タの回生動作が終了すると、各単セル１１〜１ｎの端子
電圧は内部抵抗による電圧降下分だけ低下するが、その
低下分は図示のように小さい。At time t4, the terminal voltage of the single cell, which is in a fully charged state at time t2, drops below voltage V2, the output of the OR circuit 21 changes to low level, and the braking transistor Tr2 is turned off. As a result, the charging current from the inverter 6 stops flowing through the braking resistor R9, and the charging of each of the single cells 11 to 1n is started again. When the regenerative operation of the motor ends at time t5, the terminal voltage of each of the unit cells 11 to 1n decreases by the amount of voltage drop due to the internal resistance, but the amount of decrease is small as shown in the figure.

【００３１】このように、第２の実施例では、回生バイ
パス回路２０を作動させる時期を組電池全体の電圧によ
って決めるようにしたため、組電池１を構成する各単セ
ル１１〜１ｎの過充電を確実に防止できるとともに、モ
ータ７の回生動作終了後の各単セルの端子電圧をより高
く維持できる。As described above, in the second embodiment, the timing for operating the regenerative bypass circuit 20 is determined by the voltage of the entire assembled battery, so that the overcharging of the individual cells 11 to 1n constituting the assembled battery 1 is prevented. This can be surely prevented, and the terminal voltage of each single cell after the completion of the regenerative operation of the motor 7 can be maintained higher.

【００３２】上記第２の実施例において、各単セルごと
にその端子電圧を測定する電圧検出回路を設け、いずれ
かの単セルの端子電圧が所定電圧を超えたときに制動ト
ランジスタをオンするようにしてもよい。このようにす
れば、電圧検出回路が単セルの数だけ必要になるが、各
単セルの過充電を確実に防止できる。In the second embodiment, a voltage detection circuit for measuring the terminal voltage of each unit cell is provided so that the braking transistor is turned on when the terminal voltage of any unit cell exceeds a predetermined voltage. You may With this configuration, the number of voltage detection circuits is required for each single cell, but overcharging of each single cell can be reliably prevented.

【００３３】このように構成した実施例にあっては、バ
イパス回路５が第１のバイパス回路に、制動抵抗Ｒ９が
第２のバイパス回路に、制動トランジスタＴｒ２がバイ
パス制御回路に、加算器１０６が加算回路に、コンバレ
ータ１０７が比較回路に、それぞれ対応する。In the embodiment configured as described above, the bypass circuit 5 serves as the first bypass circuit, the braking resistor R9 serves as the second bypass circuit, the braking transistor Tr2 serves as the bypass control circuit, and the adder 106 serves. The converter 107 corresponds to the adder circuit, and the comparator 107 corresponds to the comparator circuit.

【００３４】[0034]

【発明の効果】以上詳細に説明したように、本発明によ
れば、モータの回生時には、過電圧検出信号が出力され
てから所定時間が経過するまでの間は継続して各電池の
充電を行うようにしたため、モータの回生終了時に各電
池の端子電圧が低下しても、各電池を満充電に近い状態
に維持することができる。請求項２に記載の発明によれ
ば、モータの回生が終了すると各電池の内部抵抗による
電圧降下の減少分だけ各電池の端子電圧が低下すること
を考慮に入れてインバータ回路からの充電電流をバイパ
スする時期を決めるようにしたため、モータの回生終了
時に各電池の端子電圧を高く維持できる。請求項３に記
載の発明によれば、モータの回生時に過電圧検出信号が
出力されると単安定マルチバイブレータからパルス信号
を出力し、このパルス信号が出力されている間は各電池
の充電を維続して行うようにしたため、各電池の充電を
停止する時期を簡易に設定できる。請求項４に記載の発
明によれば、モータの回生時に過電圧検出信号が出力さ
れると、過電圧になった電池の電圧がさらに所定の基準
電圧になるまではその電池の充電を継続して行うように
したため、モータの回生終了時にその電池の端子電圧を
高く維持できる。請求項５に記載の発明によれば、組電
池全体の電圧レベルに応じて各電池の充電を継続するか
否かを決定するようにしたため、各電池の充電を停止す
る時期を簡易に設定できる。As described above in detail, according to the present invention, during regeneration of the motor, each battery is continuously charged until a predetermined time elapses after the overvoltage detection signal is output. Therefore, even if the terminal voltage of each battery drops at the end of regeneration of the motor, each battery can be maintained in a state close to full charge. According to the second aspect of the present invention, the charging current from the inverter circuit is adjusted in consideration of the fact that when the regeneration of the motor is completed, the terminal voltage of each battery decreases by the amount of the decrease in the voltage drop due to the internal resistance of each battery. Since the timing of bypass is determined, the terminal voltage of each battery can be kept high at the end of regeneration of the motor. According to the invention described in claim 3, when the overvoltage detection signal is output during the regeneration of the motor, the monostable multivibrator outputs a pulse signal, and while the pulse signal is output, each battery is charged. Since it is performed continuously, the time to stop charging each battery can be easily set. According to the invention described in claim 4, when the overvoltage detection signal is output during the regeneration of the motor, the battery is continuously charged until the voltage of the overvoltage battery reaches the predetermined reference voltage. By doing so, the terminal voltage of the battery can be kept high at the end of regeneration of the motor. According to the invention described in claim 5, since it is determined whether or not to continue charging of each battery according to the voltage level of the entire assembled battery, it is possible to easily set the time to stop charging of each battery. .

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明による組電池充電制御回路の第１の実施
例のブロック図。FIG. 1 is a block diagram of a first embodiment of an assembled battery charging control circuit according to the present invention.

【図２】（ａ）は各単セルの端子電圧の時間的変化を示
す図、（ｂ）は単安定マルチバイブレータの出力の時間
的変化を示す図、（ｃ）は制動トランジスタのエミッタ
電流の時間的変化を示す図。FIG. 2A is a diagram showing a temporal change of a terminal voltage of each single cell, FIG. 2B is a diagram showing a temporal change of an output of a monostable multivibrator, and FIG. 2C is a diagram showing an emitter current of a braking transistor. The figure which shows a time change.

【図３】本発明による組電池充電制御回路の第２の実施
例の回路図。FIG. 3 is a circuit diagram of a second embodiment of an assembled battery charging control circuit according to the present invention.

【図４】（ａ）は組電池全体の電圧の時間的変化を示す
図、（ｂ）は各単セルの端子電圧の時間的変化を示す
図、（ｃ）はアンド回路の出力の時間的変化を示す図。4A is a diagram showing a temporal change in voltage of the entire assembled battery, FIG. 4B is a diagram showing a temporal change in a terminal voltage of each single cell, and FIG. 4C is a temporal view of an output of an AND circuit. The figure which shows change.

【図５】従来の組電池充電制御回路のブロック図。FIG. 5 is a block diagram of a conventional battery pack charge control circuit.

【図６】図５に示す過電圧検出回路の内部構成を示す回
路図。6 is a circuit diagram showing an internal configuration of the overvoltage detection circuit shown in FIG.

【図７】図５に示すバイパス回路の内部構成を示す回路
図。7 is a circuit diagram showing an internal configuration of a bypass circuit shown in FIG.

【図８】回生バイパス回路を備えた従来の組電池充電制
御回路のブロック図。FIG. 8 is a block diagram of a conventional battery pack charge control circuit including a regenerative bypass circuit.

【図９】（ａ）は各単セルの端子電圧の時間的変化を示
す図、（ｂ）は制動トランジスタのオン・オフ変化を示
す図。9A is a diagram showing a temporal change of a terminal voltage of each single cell, and FIG. 9B is a diagram showing an ON / OFF change of a braking transistor.

【符号の説明】[Explanation of symbols]

１ 組電池 ２ 充電器 ３ リレーの接点 ４ 過電圧検出回路 ５ バイパス回路 ６ インバータ回路 ７ モータ ２０ 回生バイパス回路 １０１ 単安定マルチバイブレータ １０４ 電圧検出回路 １０５ Ｓ／Ｈ回路 １０６ 加算器 ＴＲ２ 制動トランジスタ Ｒ９ 制動抵抗 1 battery pack 2 charger 3 relay contact 4 overvoltage detection circuit 5 bypass circuit 6 inverter circuit 7 motor 20 regeneration bypass circuit 101 monostable multivibrator 104 voltage detection circuit 105 S / H circuit 106 adder TR2 braking transistor R9 braking resistance

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 充電可能な複数の電池を直列に接続して
構成される組電池と、 前記組電池を構成する前記電池ごとに設けられ、前記電
池の端子電圧が充電時に所定電圧以上になると過電圧検
出信号を出力する過電圧検出回路と、 前記過電圧検出回路ごとに設けられ、前記過電圧検出信
号を出力した前記過電圧検出回路に対応する電池への充
電電流をバイパスする第１のバイパス回路と、 前記組電池に並列に接続され、前記組電池全体の電圧に
基づいてモータを駆動するとともに、前記モータの回生
時には前記組電池に充電電流を供給するインバータ回路
とを備えた組電池充電制御回路において、 前記組電池に並列に接続され、前記モータの回生時に前
記組電池を構成する前記各電池の端子電圧が前記所定電
圧以上にならないように前記インバータ回路からの充電
電流をバイパスする第２のバイパス回路と、 前記モータの回生時にいずれかの前記過電圧検出回路が
前記過電圧検出信号を出力してから所定時間が経過する
まで前記第２のバイパス回路の作動を禁止するバイパス
制御回路とを備えることを特徴とする組電池充電制御回
路。1. An assembled battery configured by connecting a plurality of rechargeable batteries in series, and provided for each of the batteries forming the assembled battery, when the terminal voltage of the battery becomes a predetermined voltage or more during charging. An overvoltage detection circuit that outputs an overvoltage detection signal; a first bypass circuit that is provided for each of the overvoltage detection circuits and that bypasses a charging current to a battery corresponding to the overvoltage detection circuit that outputs the overvoltage detection signal; In a battery pack charge control circuit that is connected in parallel to the battery pack, drives the motor based on the voltage of the battery pack as a whole, and an inverter circuit that supplies a charging current to the battery pack during regeneration of the motor, The battery pack is connected in parallel to the battery pack and the input voltage of the batteries constituting the battery pack is prevented from exceeding the predetermined voltage when the motor is regenerated. A second bypass circuit for bypassing a charging current from the data circuit, and the second bypass circuit until a predetermined time elapses after one of the overvoltage detection circuits outputs the overvoltage detection signal during regeneration of the motor. An assembled battery charging control circuit, comprising: a bypass control circuit for inhibiting the operation of the circuit. 【請求項２】 請求項１に記載された組電池充電制御回
路において、 前記バイパス制御回路は、前記モータの回生終了時には
前記各電池の内部抵抗による電圧降下の減少分だけ前記
各電池の端子電圧が低下することを考慮に入れ、前記モ
ータの回生終了時に前記各電池の端子電圧が前記所定電
圧に近づくように前記所定時間を規定することを特徴と
する組電池充電制御回路。2. The assembled battery charging control circuit according to claim 1, wherein the bypass control circuit is configured to reduce the voltage drop due to the internal resistance of each battery when the regeneration of the motor is completed. The battery pack charge control circuit is characterized in that the predetermined time is regulated so that the terminal voltage of each battery approaches the predetermined voltage at the end of regeneration of the motor in consideration of the decrease in battery charge. 【請求項３】 請求項１または２に記載された組電池充
電制御回路において、 いずれかの前記過電圧検出回路から前記過電圧検出信号
が出力されると、所定幅のパルス信号を出力する単安定
マルチバイブレータを備え、 前記バイパス制御回路は、前記単安定マルチバイブレー
タから前記パルス信号が出力されている期間内は前記第
２のバイパス回路の作動を禁止することを特徴とする組
電池充電制御回路。3. The assembled battery charge control circuit according to claim 1, wherein when any one of the overvoltage detection circuits outputs the overvoltage detection signal, a monostable multi-circuit that outputs a pulse signal of a predetermined width is output. An assembled battery charging control circuit comprising a vibrator, wherein the bypass control circuit prohibits the operation of the second bypass circuit during a period in which the pulse signal is output from the monostable multivibrator. 【請求項４】 請求項１または２に記載された組電池充
電制御回路において前記バイパス制御回路は、前記過電
圧検出信号を出力した前記過電圧検出回路に対応する前
記電池の電圧がさらに所定の基準電圧まで上昇すると前
記第２のバイパス回路の作動を許可することを特徴とす
る組電池充電制御回路。4. The assembled battery charge control circuit according to claim 1, wherein the bypass control circuit outputs a voltage of the battery corresponding to the overvoltage detection circuit that outputs the overvoltage detection signal to a predetermined reference voltage. The battery pack charge control circuit, wherein the operation of the second bypass circuit is permitted when the temperature rises to 0. 【請求項５】 請求項１または２に記載された組電池充
電制御回路において、 前記組電池全体の電圧を検出する電圧検出回路と、 いずれかの前記過電圧検出回路から最も早く前記過電圧
検出信号が出力されたときに前記電圧検出回路によって
検出された電圧に、所定の基準電圧を加算する加算回路
と、 前記電圧検出回路によって検出された電圧値が前記加算
回路による加算結果値を上回つたか否かを判定する比較
回路とを備え、 前記バイパス制御回路は、前記比較回路によって上回っ
たと判定されると前記第２のバイパス回路の作動を許可
することを特徴とする組電池充電制御回路。5. The assembled battery charge control circuit according to claim 1, wherein a voltage detection circuit that detects the voltage of the entire assembled battery and one of the overvoltage detection circuits outputs the overvoltage detection signal earliest. An addition circuit that adds a predetermined reference voltage to the voltage detected by the voltage detection circuit when output, and whether the voltage value detected by the voltage detection circuit exceeds the addition result value by the addition circuit. A battery pack charge control circuit, comprising: a comparison circuit that determines whether or not the bypass control circuit permits the operation of the second bypass circuit when it is determined by the comparison circuit.
JP6341026A 1994-12-29 1994-12-29 Assembled battery charge controller Pending JPH08186906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6341026A JPH08186906A (en) 1994-12-29 1994-12-29 Assembled battery charge controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6341026A JPH08186906A (en) 1994-12-29 1994-12-29 Assembled battery charge controller

Publications (1)

Publication Number Publication Date
JPH08186906A true JPH08186906A (en) 1996-07-16

Family

ID=18342542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6341026A Pending JPH08186906A (en) 1994-12-29 1994-12-29 Assembled battery charge controller

Country Status (1)

Country Link
JP (1) JPH08186906A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010011619A (en) * 2008-06-26 2010-01-14 Panasonic Corp Charging control method and charge controller of battery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010011619A (en) * 2008-06-26 2010-01-14 Panasonic Corp Charging control method and charge controller of battery

Similar Documents

Publication Publication Date Title
US5723956A (en) Low cost electronic ultracapacitor interface technique to provide load leveling of a battery for pulsed load or motor traction drive applications
JP3553932B2 (en) Equipment for voltage supply in automobiles
JP5593849B2 (en) Battery monitoring device
US6057666A (en) Method and circuit for controlling charging in a dual battery electrical system
JP6128491B2 (en) Power supply device for vehicle and vehicle provided with this power supply device
JP4081970B2 (en) Battery pack voltage adjustment device and battery pack voltage adjustment method
JP3931446B2 (en) Battery charge state adjustment device
JP2004023803A (en) Voltage controller for battery pack
JP2003517806A (en) Battery charge maintenance device and method
US6388424B1 (en) Cell shunt circuit for battery cells
KR101927124B1 (en) Apparatus for preventing trouble of battery
JPS586046A (en) Storage battery charger
JPH09294337A (en) Battery charging controlling system for electric vehicle
JPH097641A (en) Charging method of secondary battery
US20020074971A1 (en) Battery charger
JP4180251B2 (en) Battery charge state adjustment device
JP2004166350A (en) Battery controller
JP5381360B2 (en) Power supply
JPH1155866A (en) Battery charger
JP3473193B2 (en) Battery charging control device
JPH08186906A (en) Assembled battery charge controller
JPH08186940A (en) Charge control circuit for combined battery
JPH07264780A (en) Charge-discharge controller for set battery
JPH08182212A (en) Pack battery charging control circuit
JPS6176034A (en) Auxiliary-machinery battery charger for electric car