JP3203533B2 - Battery pack charging device - Google Patents
Battery pack charging deviceInfo
- Publication number
- JP3203533B2 JP3203533B2 JP25514993A JP25514993A JP3203533B2 JP 3203533 B2 JP3203533 B2 JP 3203533B2 JP 25514993 A JP25514993 A JP 25514993A JP 25514993 A JP25514993 A JP 25514993A JP 3203533 B2 JP3203533 B2 JP 3203533B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- voltage
- charging
- secondary battery
- transistor
- 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 - Fee Related
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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、２次電池を２個直列接
続で使用する組電池を定電圧充電方式で充電する組電池
の充電装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery charger for charging a battery pack using two secondary batteries connected in series by a constant voltage charging method.
【０００２】[0002]
【従来技術】図４は組電池の充電の説明図である。図示
するように鉛電池やリチウムイオン電池等の２次電池Ｂ
−１と２次電池Ｂ−２を直列に接続してなる組電池Ｂの
充電を行う際は、規定電圧の定電圧値Ｅで過充電になら
ないよう監視しながら充電している。即ち、２次電池Ｂ
−１の電圧値Ｖ１と２次電池Ｂ−２の電圧Ｖ２及び組電
池Ｂの電圧値ＶＢを常時又は周期的に監視し、２個の２
次電池Ｂ−１、Ｂ−２の電圧Ｖ１、Ｖ２が規定以上のア
ンバランスになれば充電を中止し組電池Ｂとしては不良
と判定している。2. Description of the Related Art FIG. 4 is an explanatory view of charging a battery pack. As shown, a secondary battery B such as a lead battery or a lithium ion battery
When charging the assembled battery B formed by connecting -1 and the secondary battery B-2 in series, the battery is charged while monitoring at a constant voltage value E of a specified voltage so as not to be overcharged. That is, the secondary battery B
-1 and the voltage V2 of the secondary battery B-2 and the voltage value VB of the battery pack B are constantly or periodically monitored.
If the voltages V1 and V2 of the secondary batteries B-1 and B-2 become unbalanced beyond a specified value, charging is stopped and the battery pack B is determined to be defective.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、２個の
２次電池は充電／放電を繰り返しているうちに特性の差
により電圧差や充電状態に差が生じてくる。従来の充電
装置では電池Ｂ−１と電池Ｂ−２に同じ充電電流を流し
ており、このままの状態で無理に充電／放電を繰り返せ
ば片方の電池が過充電となりその寿命を縮めることにな
ると同時に、他方の電池は充電不足になり電池としての
能力（容量）を充分発揮出来なくなる。また、単品の電
池としては良品でも組電池としては不良品となると云う
問題があった。However, as the two rechargeable batteries are repeatedly charged / discharged, a difference in characteristics and a difference in voltage and state of charge occur due to a difference in characteristics. In the conventional charging device, the same charging current is applied to the battery B-1 and the battery B-2. If the charging / discharging is forcibly repeated in this state, one of the batteries will be overcharged and its life will be shortened. On the other hand, the other battery becomes insufficiently charged and cannot fully exhibit its capacity (capacity) as a battery. In addition, there is a problem that even a non-defective battery as a single product becomes a defective product as a battery pack.
【０００４】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、各電池の充電状態を自動的に
バランスをとりながら充電を行う組電池の充電装置を提
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 problems, and an object of the present invention is to provide a charging device for an assembled battery that eliminates the above-mentioned problems and performs charging while automatically balancing the charging state of each battery. Aim.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
本発明は、図１に示すように、第１及び第２の２個の２
次電池Ｂ−１、Ｂ−２を直列に接続した組電池Ｂに定電
圧回路（トランジスタＱ１及びオペアンプＵ３）からの
定電圧を印加して該組電池Ｂを充電する組電池の充電装
置において、組電池Ｂの第１の２次電池Ｂ−１の電圧Ｖ
１、第２の２次電池Ｂ−２の電圧Ｖ２として、Ｖ１＜Ｖ
２の時ＯＮする第１のオペアンプＵ１と、Ｖ１＞Ｖ２の
時ＯＮする第２のオペアンプＵ２とを設けると共に、第
１の２次電池Ｂ−１と第２の２次電池Ｂ−２の正負極の
接続点に接続され、第１のオペアンプＵ１のＯＮ動作で
ＯＮする第１のスイッチングトランジスタＱ３と、第２
のオペアンプＵ２のＯＮ動作でＯＮする第２のスイッチ
ングトランジスタＱ２を設け、第１及び第２の両スイッ
チングトランジスタＱ３、Ｑ２がＯＦＦの時は定電圧回
路からの同じ充電電流ｉで両２次電池Ｂ−１、Ｂ−２を
充電し、第１のスイッチングトランジスタＱ３がＯＮの
時は該第１のスイッチングトランジスタＱ３を介して第
２の２次電池Ｂ−２に流れる定電圧回路からの充電電流
ｉの所定量を分流させると共に、第２のスイッチングト
ランジスタＱ２がＯＮの時は該第２のスイッチングトラ
ンジスタＱ２を介して第２の２次電池Ｂ−２に流れる定
電圧回路からの充電電流ｉに所定量の充電電流を外部か
ら追加して流すように構成したことを特徴とする。 In order to solve the above-mentioned problems, the present invention comprises a first and a second two , as shown in FIG.
Constant power is supplied to the assembled battery B in which the secondary batteries B-1 and B-2 are connected in series.
Voltage circuit (transistor Q1 and operational amplifier U3)
A battery charger for charging the battery pack B by applying a constant voltage.
The voltage V of the first secondary battery B-1 of the battery pack B
1. As the voltage V2 of the second secondary battery B-2, V1 <V
2 when the first operational amplifier U1 is turned on when V1> V2
And a second operational amplifier U2 that is turned on when
The positive and negative electrodes of the first secondary battery B-1 and the second secondary battery B-2
Connected to the connection point, the ON operation of the first operational amplifier U1
A first switching transistor Q3 to be turned on;
Switch that is turned on by the ON operation of the operational amplifier U2
A switching transistor Q2 is provided, and both the first and second switches are provided.
When the switching transistors Q3 and Q2 are OFF, the constant voltage
Rechargeable batteries B-1 and B-2 with the same charging current i from the road
Is charged and the first switching transistor Q3 is turned on.
At the time via the first switching transistor Q3.
2 charging current from the constant voltage circuit flowing through the secondary battery B-2
i and a second switching
When the transistor Q2 is ON, the second switching transistor
Constant flowing to the second secondary battery B-2 via the transistor Q2.
A predetermined amount of charging current is added to the charging current i from the voltage circuit.
It is characterized in that it is configured to be added to the flow.
【０００６】[0006]
【作用】本発明では、Ｖ１＝Ｖ２で第１及び第２の両ス
イッチングトランジスタＱ３、Ｑ２がＯＦＦの時は定電
圧回路からの同じ充電電流ｉで両２次電池Ｂ−１、Ｂ−
２を充電する。Ｖ１＜Ｖ２でオペアンプＵ１がＯＮ動作
となり第１のスイッチングトランジスタＱ３がＯＮとな
ると、定電圧回路からの充電電流ｉは第１の２次電池Ｂ
−１を充電した後、抵抗Ｒ７と第２の２次電池Ｂ−２に
分流され、第１の２次電池Ｂ−１の電圧Ｖ１は第２の２
次電池Ｂ−２の電圧Ｖ２に比べて急速に上昇する。Ｖ２
＜Ｖ１でオペアンプＵ２がＯＮ動作となり第２のスイッ
チングトランジスタＱ２がＯＮとなると、第２の２次電
池Ｂ−２には定電圧回路からの充電電流ｉに第２のスイ
ッチングトランジスタＱ２がＯＮを通して流れる電流ｉ
１が加わった電流が流れ、第２の２次電池Ｂ−２の電圧
Ｖ２は第１の２次電池Ｂ−１の電圧Ｖ１に比べて急速に
上昇する。これにより、第１の２次電池Ｂ−１と第２の
２次電池Ｂ−２の充電のアンバランスを充電中に自動的
に修正し電池の寿命を延ばし、電池としての能力（容
量）を充分に発揮させることができる。According to the present invention, when V1 = V2, both the first and second switches are set.
Constant current when switching transistors Q3 and Q2 are OFF
Rechargeable batteries B-1 and B- with the same charging current i from the voltage circuit.
Charge 2. Operational amplifier U1 turns ON when V1 <V2
And the first switching transistor Q3 is turned on.
Then, the charging current i from the constant voltage circuit becomes the first secondary battery B
After charging -1, the resistor R7 and the second secondary battery B-2 are charged.
The voltage V1 of the first secondary battery B-1 is
It rises more rapidly than the voltage V2 of the secondary battery B-2. V2
<V1 turns on the operational amplifier U2 and turns on the second switch.
When the switching transistor Q2 is turned on, the second secondary power
The second switch is connected to the charging current i from the constant voltage circuit in the pond B-2.
Current i flowing through ON of switching transistor Q2
1 flows, and the voltage of the second secondary battery B-2
V2 is faster than the voltage V1 of the first secondary battery B-1.
To rise. As a result, the first secondary battery B-1 and the second
The charging imbalance of the secondary battery B-2 is automatically corrected during charging, the life of the battery is extended, and the capacity (capacity) of the battery can be sufficiently exhibited.
【０００７】[0007]
【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は本発明の組電池充電装置の回路を示
す図である。図示するように本発明の組電池充電装置は
トランジスタＱ１、スイッチングトランジスタＱ２、Ｑ
３、オペアンプＵ１、Ｕ２、Ｕ３、抵抗器Ｒ１〜Ｒ７、
端子Ｔ１、Ｔ２、Ｔ３で構成され、２個の電池Ｂ−１と
電池Ｂ−２が直列に接続されてなる組電池Ｂを充電す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing a circuit of the battery pack charging apparatus of the present invention. As shown, the battery pack charging apparatus of the present invention includes a transistor Q1, switching transistors Q2, Q
3, operational amplifiers U1, U2, U3, resistors R1 to R7,
The battery pack B is composed of terminals T1, T2, and T3, and includes two batteries B-1 and B-2 connected in series.
【０００８】入力電圧Ｖｉは入力端子Ｔｉに入力され、
トランジスタＱ１の端子１１、出力端子１２を経て充電
用の端子Ｔ１に出力される。トランジスタＱ１の出力端
子１２の電圧は抵抗器Ｒ１、Ｒ２で分圧され、該分圧さ
れた電圧値はオペアンプＵ３で基準電圧値Ｖｒｅｆと比
較され差電圧がトランジスタＱ１の端子１３にフィ−ド
バックされ、出力端子１２の電圧、即ち端子Ｔ１の電圧
値は一定に維持される。The input voltage Vi is input to an input terminal Ti,
The voltage is output to the charging terminal T1 via the terminal 11 and the output terminal 12 of the transistor Q1. The voltage at the output terminal 12 of the transistor Q1 is divided by resistors R1 and R2. The divided voltage value is compared with a reference voltage value Vref by an operational amplifier U3, and the difference voltage is fed back to the terminal 13 of the transistor Q1. , The voltage at the output terminal 12, ie, the voltage value at the terminal T1, is kept constant.
【０００９】一方、入力端子Ｔｉに入力された入力電圧
Ｖｉは抵抗器Ｒ６、スイッチングトランジスタＱ２、抵
抗Ｒ７、スイッチングトランジスタＱ３よりなる直列回
路に印加される。スイッチングトランジスタＱ２がオン
になると電池Ｂ−２の充電電流ｉ２は電池Ｂ−１からの
充電電流ｉとスイッチングトランジスタＱ２からの充電
電流ｉ１の和となり、スイッチングトランジスタＱ３が
オンになると電池Ｂ−１を通った充電電流ｉは抵抗器Ｒ
７と電池Ｂ−２に分流するように制御される。On the other hand, the input voltage Vi input to the input terminal Ti is applied to a series circuit including a resistor R6, a switching transistor Q2, a resistor R7, and a switching transistor Q3. When the switching transistor Q2 is turned on, the charging current i2 of the battery B-2 is the sum of the charging current i from the battery B-1 and the charging current i1 from the switching transistor Q2. The passed charging current i is a resistor R
7 and the battery B-2.
【００１０】ここで、抵抗器Ｒ３の抵抗値ｒ３と抵抗器
Ｒ５の抵抗値ｒ５を等しく、ｒ３≒ｒ５とし、抵抗器Ｒ
４の抵抗値ｒ４を適当な値に設定する。ｂ点の電圧値は
ａ点の一定の定電圧値を抵抗Ｒ３と抵抗器Ｒ４、Ｒ５の
直列回路で分圧した値であり、ｄ点の電圧値との差がオ
ペアンプＵ１に入力され、その出力でスイッチングトラ
ンジスタＱ３を制御する。また、ｃ点の電圧値はａ点の
一定の電圧値を抵抗器Ｒ３、Ｒ４の直列回路と抵抗器Ｒ
５で分圧した値であり、ｄ点の電圧値との差がオペアン
プＵ２に入力され、その出力でスイッチングトランジス
タＱ２を制御する。Here, the resistance value r3 of the resistor R3 is equal to the resistance value r5 of the resistor R5, and r3 ≒ r5.
4 is set to an appropriate value. The voltage value at the point b is a value obtained by dividing the constant voltage value at the point a by a series circuit of the resistor R3 and the resistors R4 and R5. The difference between the voltage value at the point d and the voltage value at the point d is input to the operational amplifier U1. The output controls the switching transistor Q3. Further, the voltage value at the point c is obtained by setting the constant voltage value at the point a to a series circuit of the resistors R3 and R4 and the resistor R
The value divided by 5 and the difference from the voltage value at the point d is input to the operational amplifier U2, and the output thereof controls the switching transistor Q2.
【００１１】組電池Ｂの電池Ｂ−１の電圧値Ｖ１と電池
Ｂ−２の電圧値Ｖ２のバランスがとれているときは、ｃ
点の電圧値＜ｄ点の電圧値＜ｂ点の電圧値（Ｖ１≒Ｖ
２）となり、オペアンプＵ１及びＵ２の出力は共にロー
レベルとなり、スイッチングトランジスタＱ２及びＱ３
は共にオフとなる。このため電池Ｂ−１及びＢ−２は同
じ充電電流で充電される。When the voltage value V1 of the battery B-1 of the battery pack B is balanced with the voltage value V2 of the battery B-2, c
Voltage value at point <voltage value at point d <voltage value at point b (V1 ≒ V
2), the outputs of the operational amplifiers U1 and U2 both become low level, and the switching transistors Q2 and Q3
Are both turned off. Therefore, batteries B-1 and B-2 are charged with the same charging current.
【００１２】図２は電池Ｂ−１の電圧値Ｖ１と電池Ｂ−
２の電圧値Ｖ２の関係が、Ｖ１＜Ｖ２の時の充電電流の
流れを示す図である。Ｖ１＜Ｖ２の時、抵抗器Ｒ４の抵
抗値ｒ４を適当な値に設定すれば、ｄ点の電圧値＞ｂ点
の電圧値となり、オペアンプＵ１の出力はハイレベル
（オペアンプＵ２の出力はロ−レベル）となるためスイ
ッチングトランジスタＱ３はオンとなる（Ｑ２はオ
フ）。このため充電電流ｉは電池Ｂ−１を充電した後、
抵抗Ｒ７と電池Ｂ−２に分流される。従って電池Ｂ−１
の電圧Ｖ１は電池Ｂ−２の電圧Ｖ２に比べ急速に上昇す
る。組電池Ｂの電池Ｂ−１及び電池Ｂ−２の電圧のバラ
ンスがとれてＶ１≒Ｖ２になれば上記に述べたように同
じ充電電流ｉが流れる。FIG. 2 shows the voltage value V1 of the battery B-1 and the battery B-
FIG. 4 is a diagram showing a flow of a charging current when a relationship between two voltage values V2 is V1 <V2. When V1 <V2, if the resistance value r4 of the resistor R4 is set to an appropriate value, the voltage value at the point d> the voltage value at the point b, the output of the operational amplifier U1 is at a high level (the output of the operational amplifier U2 is at a low level). Level), the switching transistor Q3 is turned on (Q2 is off). For this reason, after charging the battery B-1, the charging current i
The current is shunted to the resistor R7 and the battery B-2. Therefore, battery B-1
Of the battery B-2 rises more rapidly than the voltage V2 of the battery B-2. If the voltages of the batteries B-1 and B-2 of the assembled battery B are balanced and V1 ≒ V2, the same charging current i flows as described above.
【００１３】図３は電池Ｂ−１の電圧値Ｖ１と電池Ｂ−
２の電圧値Ｖ２の関係が、Ｖ１＞Ｖ２の時の充電電流の
流れを示す図である。Ｖ１＞Ｖ２の時、ｄ点の電圧値＜
ｃ点の電圧値となり、オペアンプＵ２の出力はハイレベ
ル（Ｕ１の出力はロ−レベル）となるためスイッチング
トランジスタＱ２がＯＮとなる（Ｑ３はオフ）。このた
め電池Ｂ−２の充電電流ｉ２は電池Ｂ−１の充電電流ｉ
とスイッチングトランジスタより供給される電流ｉ１の
和となる。従って、電池Ｂ−２の電圧Ｖ２は電池Ｂ−１
の電圧Ｖ１に較べ急速に上昇する。組電池Ｂの電池Ｂ−
１及び電池Ｂ−２の電圧のバランスがとれてＶ１≒Ｖ２
になれば上記に述べたように同じ充電電流ｉが流れる。FIG. 3 shows the voltage value V1 of the battery B-1 and the battery B-
FIG. 4 is a diagram showing a flow of a charging current when a relationship between two voltage values V2 is V1> V2. When V1> V2, voltage value at point d <
The voltage at the point c is reached, and the output of the operational amplifier U2 is at a high level (the output of U1 is at a low level), so that the switching transistor Q2 is turned on (Q3 is turned off). Therefore, the charging current i2 of the battery B-2 is equal to the charging current i of the battery B-1.
And the current i1 supplied from the switching transistor. Therefore, the voltage V2 of the battery B-2 is equal to that of the battery B-1.
Rapidly rises as compared with the voltage V1 of the first stage. Battery B of assembled battery B-
1 and battery B-2 are balanced and V1ＶV2
, The same charging current i flows as described above.
【００１４】[0014]
【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できる。 ２個のオ
ペアンプと２個のスイッチングトランジスタで簡単な回
路で、組電池を構成する各２次電池の特性差、容量の差
等より生じるアンバランスに対して自動的にバランスを
とって充電するので、過充電による電池寿命を縮めるこ
となく、また充電の不足による容量不足を起こすことな
く各２次電池容量を有効に使用することができる。As described above, according to the present invention, the following excellent effects can be expected . Two o
Simple operation with a pair amplifier and two switching transistors
In the road, charging is performed by automatically balancing the imbalance caused by the characteristic difference, capacity difference, etc. of each of the secondary batteries constituting the assembled battery, without shortening the battery life due to overcharging and charging. Capacity of each secondary battery can be effectively used without causing capacity shortage due to shortage of battery.
【図１】本発明の組電池充電装置の回路を示す図であ
る。FIG. 1 is a diagram showing a circuit of a battery pack charging apparatus of the present invention.
【図２】Ｖ１＜Ｖ２の時の充電電流の流れを示す図であ
る。FIG. 2 is a diagram showing a flow of a charging current when V1 <V2.
【図３】Ｖ１＞Ｖ２の時の充電電流の流れを示す図であ
る。FIG. 3 is a diagram showing a flow of a charging current when V1> V2.
【図４】組電池の充電の説明図である。FIG. 4 is a diagram illustrating charging of a battery pack.
Ｑ１ トランジスタ Ｑ２ トランジスタ Ｑ３ トランジスタ Ｕ１ オペアンプ Ｕ２ オペアンプ Ｕ３ オペアンプ Ｂ１ 電池 Ｂ２ 電池 Ｒ３ 抵抗 Ｒ４ 抵抗 Ｒ５ 抵抗 Ｒ６ 抵抗 Ｒ７ 抵抗 Ｔ１ 端子 Ｔ２ 端子 Q1 transistor Q2 transistor Q3 transistor U1 operational amplifier U2 operational amplifier U3 operational amplifier B1 battery B2 battery R3 resistor R4 resistor R5 resistor R6 resistor R7 resistor T1 terminal T2 terminal
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−64377（ＪＰ，Ａ) 特開 平７−87673（ＪＰ，Ａ) 特開 平６−165399（ＪＰ，Ａ) 特開 平６−253463（ＪＰ，Ａ) 特開 平５−49181（ＪＰ，Ａ) 特開 平４−299032（ＪＰ，Ａ) 特開 平４−248332（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H02J 7/02 - 7/10 H01M 10/44 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-64377 (JP, A) JP-A-7-87673 (JP, A) JP-A-6-165399 (JP, A) JP-A-6-165399 253463 (JP, A) JP-A-5-49181 (JP, A) JP-A-4-299032 (JP, A) JP-A-4-248332 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H02J 7/ 02-7/10 H01M 10/44
Claims (1)
接続した組電池に定電圧回路からの定電圧を印加して該
組電池を充電する組電池の充電装置において、前記組電池の第１の２次電池の電圧Ｖ１、第２の２次電
池の電圧Ｖ２として、Ｖ１＜Ｖ２の時ＯＮする第１のオ
ペアンプと、Ｖ１＞Ｖ２の時ＯＮする第２のオペアンプ
とを設けると共に、第１の２次電池と第２の２次電池の
正負極の接続点に接続され、第１のオペアンプのＯＮ動
作でＯＮする第１のスイッチングトランジスタと、第２
のオペアンプのＯＮ動作でＯＮする第２のスイッチング
トランジスタを設け、 前記第１及び第２の両スイッチングトランジスタがＯＦ
Ｆの時は前記定電圧回路からの同じ充電電流で両２次電
池を充電し、前記第１のスイッチングトランジスタがＯ
Ｎの時は該第１のスイッチングトランジスタを介して前
記第２の２次電池に流れる前記定電圧回路からの充電電
流の所定量を分流させると共に、前記第２のスイッチン
グトランジスタがＯＮの時は前記第２のスイッチングト
ランジスタを介して前記第２の２次電池に流れる前記定
電圧回路からの充電電流に所定量の充電電流を外部から
追加して流すように構成した ことを特徴とする組電池の
充電装置。A constant voltage from a constant voltage circuit is applied to an assembled battery in which first and second two secondary batteries are connected in series.
In a battery charger for charging a battery pack , a voltage V1 of a first secondary battery of the battery pack , a second secondary battery,
The first voltage which is turned on when V1 <V2 is set as the voltage V2 of the pond.
And a second operational amplifier that is turned on when V1> V2
And the first secondary battery and the second secondary battery.
Connected to the positive / negative connection point to turn on the first operational amplifier.
A first switching transistor that is turned on by
Switching that is turned on by the ON operation of the operational amplifier
A transistor, wherein both the first and second switching transistors are OF
In the case of F, the same charging current from the constant voltage circuit is used for both secondary power
Charge the pond and the first switching transistor
In the case of N, the signal is passed through the first switching transistor.
The charging power from the constant voltage circuit flowing to the second secondary battery.
Diverting a predetermined amount of the flow,
When the switching transistor is ON, the second switching
The constant flowing through the transistor to the second secondary battery;
Apply a predetermined amount of charging current to the charging current from the voltage circuit from outside
A battery charger for an assembled battery, characterized in that it is configured to additionally flow .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25514993A JP3203533B2 (en) | 1993-09-17 | 1993-09-17 | Battery pack charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25514993A JP3203533B2 (en) | 1993-09-17 | 1993-09-17 | Battery pack charging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0787675A JPH0787675A (en) | 1995-03-31 |
| JP3203533B2 true JP3203533B2 (en) | 2001-08-27 |
Family
ID=17274763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25514993A Expired - Fee Related JP3203533B2 (en) | 1993-09-17 | 1993-09-17 | Battery pack charging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3203533B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3899700B2 (en) * | 1998-09-03 | 2007-03-28 | 株式会社デンソー | Battery pack voltage adjustment device and battery pack voltage adjustment method |
| TWI377758B (en) | 2008-06-20 | 2012-11-21 | Green Solution Tech Co Ltd | The battery charging controller and battery module thereof |
| JP5446235B2 (en) * | 2008-12-11 | 2014-03-19 | 新神戸電機株式会社 | Battery controller |
| JP2013123344A (en) | 2011-12-12 | 2013-06-20 | Toyota Industries Corp | Device for equalizing battery cell voltages |
| TWI795749B (en) * | 2021-03-24 | 2023-03-11 | 邑達電子股份有限公司 | Battery pack and serial structure of battery packs |
-
1993
- 1993-09-17 JP JP25514993A patent/JP3203533B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0787675A (en) | 1995-03-31 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |