JPH06237539A - Charging method of secondary battery - Google Patents
Charging method of secondary batteryInfo
- Publication number
- JPH06237539A JPH06237539A JP50A JP2020393A JPH06237539A JP H06237539 A JPH06237539 A JP H06237539A JP 50 A JP50 A JP 50A JP 2020393 A JP2020393 A JP 2020393A JP H06237539 A JPH06237539 A JP H06237539A
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- Japan
- Prior art keywords
- charging
- secondary battery
- circuit
- current
- voltage
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、二次電池の充電方法に
関し、特に、非水系二次電池を定電圧充電する場合に好
適である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of charging a secondary battery, and is particularly suitable for charging a non-aqueous secondary battery with a constant voltage.
【０００２】[0002]
【従来の技術】ビデオカメラやパーソナルコンピュータ
の電源として、二次電池が注目されており、その中でも
リチウムイオン二次電池は、小型化、高容量化が可能で
あるため、脚光を浴びている。2. Description of the Related Art Secondary batteries have been attracting attention as power sources for video cameras and personal computers. Among them, lithium ion secondary batteries are in the spotlight because they can be made smaller and have higher capacities.
【０００３】ところで、前述のようなリチウムイオン二
次電池にあっては、高温度雰囲気中で長時間にわたって
充電されたり、あるいは、高電圧状態で高温雰囲気中に
放置されると、電解液や活物質の劣化により、その後の
サイクル特性（即ち、寿命）が低下してしまう。By the way, in the lithium ion secondary battery as described above, if the lithium ion secondary battery is charged in a high temperature atmosphere for a long time or left in a high voltage atmosphere in a high voltage state, an electrolyte solution or an active material is activated. Subsequent cycle characteristics (i.e., life) are degraded due to the deterioration of the material.
【０００４】そこで、特開平４−１３７３７１号公報に
おいては、充電後に高電圧状態で高温雰囲気中に放置さ
れると、二次電池を自動的に放電して低電圧状態とする
ことにより、二次電池の劣化を防止している。Therefore, in Japanese Patent Laid-Open No. 4-137371, when the secondary battery is left in a high temperature atmosphere in a high voltage state after being charged, the secondary battery is automatically discharged to a low voltage state. Prevents battery deterioration.
【０００５】[0005]
【発明が解決しようとする課題】しかし、前述の従来技
術は、充電終了後の二次電池の劣化対策を行っているに
留まり、二次電池の劣化を防止するための充電方法を開
示するものではない。However, the above-mentioned prior art discloses only a countermeasure for deterioration of the secondary battery after completion of charging, and discloses a charging method for preventing deterioration of the secondary battery. is not.
【０００６】そこで、本発明は、高温雰囲気中で充電さ
れても、二次電池が劣化することがないようにすること
を目的とする。Therefore, an object of the present invention is to prevent the secondary battery from deteriorating even when it is charged in a high temperature atmosphere.
【０００７】[0007]
【課題を解決するための手段】本発明は、二次電池を定
電圧充電し、充電電流が所定値まで低下すると充電を終
了する充電方法において、前記所定値は、前記二次電池
の充電中の周囲温度が高いほど大きく設定される。The present invention provides a charging method of charging a secondary battery at a constant voltage and ending charging when the charging current drops to a predetermined value, wherein the predetermined value is during charging of the secondary battery. The higher the ambient temperature, the larger the setting.
【０００８】更に、本発明は、二次電池を定電圧充電
し、充電時間が所定時間に達すると充電を終了する充電
方法において、前記所定時間は、前記二次電池の充電中
の周囲温度が高いほど短く設定される。Furthermore, the present invention is a charging method in which a secondary battery is charged at a constant voltage and the charging is terminated when the charging time reaches a predetermined time, wherein the predetermined time is an ambient temperature during charging of the secondary battery. The higher the value, the shorter the setting.
【０００９】[0009]
【作用】本発明においては、充電中の二次電池の周囲温
度を検出する。そして、検出温度が高い程、充電終了の
ための充電電流の設定値を大きく、または充電時間を短
くする。従って、二次電池は、高温雰囲気中では低電圧
に充電され、逆に低温雰囲気中では高電圧に充電され
る。In the present invention, the ambient temperature of the secondary battery being charged is detected. Then, the higher the detected temperature, the larger the set value of the charging current for ending the charging, or the shorter the charging time. Therefore, the secondary battery is charged to a low voltage in a high temperature atmosphere and, conversely, is charged to a high voltage in a low temperature atmosphere.
【００１０】[0010]
【実施例】図１は、本発明の充電方法を用いて、リチウ
ムイオン二次電池からなる二次電池Ｂを定電流、定電圧
充電するための充電回路を示すブロック回路図である。
この充電回路は、電源回路１と、電源回路１の出力を制
御して二次電池Ｂの充電状態を制御する充電制御回路２
とからなる。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block circuit diagram showing a charging circuit for charging a secondary battery B, which is a lithium ion secondary battery, with a constant current and a constant voltage by using the charging method of the present invention.
This charging circuit includes a power supply circuit 1 and a charge control circuit 2 that controls the output of the power supply circuit 1 to control the charging state of the secondary battery B.
Consists of.
【００１１】電源回路１は、ＡＣ１００Ｖの商用交流電
源に含まれる雑音を除去する入力フィルタ３と、入力さ
れた交流を直流に変換する整流回路４と、整流回路４の
直流を高周波の交流に変換するスイッチング部５と、高
周波の交流を所定の電圧に変換する変換トランス６と、
変換トランス６の交流出力を整流して平滑な直流に変換
する整流平滑回路７と、スイッチング部５を制御して直
流出力を制御するＰＷＭ制御回路８と、充電制御回路２
からの制御信号をＰＷＭ制御回路８に入力するフォトカ
プラ９とを備えている。The power supply circuit 1 includes an input filter 3 for removing noise contained in a commercial AC power supply of 100 VAC, a rectifier circuit 4 for converting the input AC into DC, and a DC for the rectifier circuit 4 into high-frequency AC. A switching unit 5, and a conversion transformer 6 for converting high-frequency alternating current into a predetermined voltage,
A rectifying / smoothing circuit 7 that rectifies the AC output of the conversion transformer 6 to convert it into a smooth DC, a PWM control circuit 8 that controls the switching unit 5 to control the DC output, and a charging control circuit 2
And a photocoupler 9 for inputting a control signal from the controller to the PWM control circuit 8.
【００１２】充電制御回路２は、電源回路１の出力を調
整して二次電池Ｂの充電電圧及び充電電流を制御する定
電圧充電回路１０及び定電流充電回路１１と、演算回路
１２と、電流検出回路１３と、充電時間を制御するタイ
マー回路１４と、電源回路１と二次電池Ｂとの間に設け
られた充電制御スイッチ１５とを備えている。The charging control circuit 2 adjusts the output of the power supply circuit 1 to control the charging voltage and charging current of the secondary battery B, the constant voltage charging circuit 10 and the constant current charging circuit 11, the arithmetic circuit 12, and the current. It includes a detection circuit 13, a timer circuit 14 for controlling the charging time, and a charging control switch 15 provided between the power supply circuit 1 and the secondary battery B.
【００１３】定電圧充電回路１０を構成する差動アンプ
１０Ａは、＋側入力端子を、分圧抵抗を介して二次電池
Ｂに接続し、−側入力端子を、演算回路１２よりのデジ
タル信号をアナログ信号に変換し、それを基準電圧とし
て出力するＤ／Ａ変換器１０Ｂに接続している。In the differential amplifier 10A constituting the constant voltage charging circuit 10, the + side input terminal is connected to the secondary battery B via the voltage dividing resistor, and the − side input terminal is connected to the digital signal from the arithmetic circuit 12. Is converted into an analog signal and is output as a reference voltage, which is connected to a D / A converter 10B.
【００１４】差動アンプ１０Ａは、＋側入力端子の電
圧、即ち、二次電池Ｂの分圧電圧と、−側入力端子のＤ
／Ａ変換器１０Ｂが発生する基準電圧とを比較する。分
圧電圧（即ち、電池電圧）が基準電圧よりも高くなる
と、差動アンプ１０Ａの出力は＋となり、フォトカプラ
９の発光ダイオードを逆バイアスする。よって、発光ダ
イオードは発光しなくなり、ＰＷＭ制御回路８は、スイ
ッチング部５のスイッチング素子を制御して出力を低下
させる。The differential amplifier 10A has a voltage at the + side input terminal, that is, a divided voltage of the secondary battery B, and a D-side input terminal D.
A comparison is made with the reference voltage generated by the / A converter 10B. When the divided voltage (that is, the battery voltage) becomes higher than the reference voltage, the output of the differential amplifier 10A becomes +, and the light emitting diode of the photocoupler 9 is reverse biased. Therefore, the light emitting diode does not emit light, and the PWM control circuit 8 controls the switching element of the switching unit 5 to reduce the output.
【００１５】斯る動作を行うことにより、定電圧充電回
路１０は、演算回路１２から出力され、Ｄ／Ａ変換器１
０Ｂにて出力される基準電圧に応じた電圧でもって、二
次電池Ｂを定電圧充電する。By performing such an operation, the constant voltage charging circuit 10 is output from the arithmetic circuit 12, and the D / A converter 1
The secondary battery B is charged at a constant voltage with a voltage corresponding to the reference voltage output at 0B.
【００１６】一方、定電流充電回路１１を構成する差動
アンプ１１Ａは、＋側入力端子を、二次電池Ｂに直列接
続された電流検出抵抗Ｒに接続し、−側入力端子を基準
電源１１Ｂに接続している。On the other hand, in the differential amplifier 11A constituting the constant current charging circuit 11, the + side input terminal is connected to the current detecting resistor R connected in series with the secondary battery B, and the-side input terminal is the reference power source 11B. Connected to.
【００１７】差動アンプ１１Ａは、＋側入力端子の電
圧、即ち、二次電池Ｂに流れる電流値に基づいて電流検
出抵抗Ｒに発生する電圧と、−側入力端子の基準電源１
１Ｂの電圧とを比較する。電流検出抵抗Ｒに発生する電
圧が基準電源電圧よりも高くなる（言い換えれば、二次
電池Ｂを流れる電流値が所定値より大きくなる）と、差
動アンプ１１Ａの出力は＋となって、フォトカプラ９の
発光ダイオードを逆バイアスし、発光ダイオードは発光
しなくなる。この状態となると、ＰＷＭ制御回路８は、
スイッチング部５のスイッチング素子を制御し、出力を
低下させる。即ち、定電流充電回路１１は、二次電池Ｂ
の充電電流が一定となるように制御して充電を行う。In the differential amplifier 11A, the voltage at the + input terminal, that is, the voltage generated in the current detection resistor R based on the value of the current flowing in the secondary battery B, and the reference power source 1 at the − input terminal.
Compare with the voltage of 1B. When the voltage generated in the current detection resistor R becomes higher than the reference power supply voltage (in other words, the current value flowing through the secondary battery B becomes larger than a predetermined value), the output of the differential amplifier 11A becomes +, and The light emitting diode of the coupler 9 is reverse biased and the light emitting diode does not emit light. In this state, the PWM control circuit 8
The switching element of the switching unit 5 is controlled to reduce the output. That is, the constant current charging circuit 11 is used for the secondary battery B
The charging is performed by controlling so that the charging current is constant.
【００１８】演算回路１２は、マイコンからなる。演算
回路１２は、Ａ／Ｄ変換器からなる電流検出回路１３の
出力を演算して、二次電池Ｂの満充電を検出し、充電制
御スイッチ１５の開閉動作を制御する。The arithmetic circuit 12 comprises a microcomputer. The arithmetic circuit 12 calculates the output of the current detection circuit 13 including an A / D converter, detects the full charge of the secondary battery B, and controls the opening / closing operation of the charge control switch 15.
【００１９】更に、演算回路１２は、斯る周囲温度検出
のために、図４に基づいたテーブルを記憶している。即
ち、図４は、種々の温度雰囲気中における二次電池Ｂの
充電電流特性であり、実線、一点鎖線、破線の順に高
温、中温、低温を示している。同図から明らかなよう
に、二次電池Ｂの充電電流は、周囲温度が高いほど急速
に減少する特性を備えており、演算回路１２は、斯る特
性をテーブルの形（即ち、充電電流の減少度合と周囲温
度との対照表）で記憶している。Further, the arithmetic circuit 12 stores a table based on FIG. 4 for detecting the ambient temperature. That is, FIG. 4 shows the charging current characteristics of the secondary battery B in various temperature atmospheres, and shows the high temperature, the medium temperature, and the low temperature in the order of the solid line, the alternate long and short dash line, and the broken line. As is clear from the figure, the charging current of the secondary battery B has a characteristic that it rapidly decreases as the ambient temperature increases, and the arithmetic circuit 12 shows such a characteristic in the form of a table (that is, the charging current It is stored as a comparison table between the degree of decrease and the ambient temperature.
【００２０】そして、演算回路１２は、電流検出回路１
３の出力演算を下に前記テーブルを参照して、充電中の
二次電池Ｂの周囲温度を検出し、斯る検出結果に基づい
て、前記満充電の検出動作、Ｄ／Ａ変換器１０Ｂへの出
力（即ち、差動アンプ１０Ａの基準電圧）及びタイマー
回路１４の動作を制御する。The arithmetic circuit 12 is the current detection circuit 1
3, the ambient temperature of the secondary battery B being charged is detected by referring to the table below, and based on the detection result, the full charge detection operation and the D / A converter 10B are performed. Output (that is, the reference voltage of the differential amplifier 10A) and the operation of the timer circuit 14.
【００２１】図２は、本実施例回路における充電の全体
動作を示しており、まず、ステップＳ１において、定電
流充電回路１１の制御の下に、定電流充電が行われる。FIG. 2 shows the entire charging operation in the circuit of this embodiment. First, in step S1, constant current charging is performed under the control of the constant current charging circuit 11.
【００２２】ステップＳ２において、二次電池Ｂの電池
電圧ＶBが、所定値Ｖ0に到達したか否かが判断され、到
達したと判断されると、次のステップＳ３に進む。な
お、所定値Ｖ0は、例えば、リチウムイオン二次電池か
ら二次電池Ｂでは、４．０Ｖ／セルである。In step S2, it is determined whether or not the battery voltage VB of the secondary battery B has reached a predetermined value V0, and if it is determined that it has reached it, the process proceeds to the next step S3. The predetermined value V0 is 4.0 V / cell in the lithium ion secondary battery to the secondary battery B, for example.
【００２３】ステップＳ３において、定電流充電が終了
し、定電圧充電回路１０の制御の下に、所定電圧Ｖ1で
の定電圧充電が行われる。In step S3, the constant current charging is completed, and under the control of the constant voltage charging circuit 10, the constant voltage charging is performed at the predetermined voltage V1.
【００２４】ステップＳ４において、二次電池Ｂの電池
電流が所定値Ｉ0にまで低下したか否かが判断され、低
下したと判断されると、ステップＳ５において、充電制
御スイッチ１５が開かれ、充電が終了する。一方、低下
したと判断されない場合、ステップＳ６において、充電
開始からの充電時間をカウントするタイマー回路１４の
出力に基づいて、所定時間Ｔ0が経過したか否かが判断
され、所定時間経過した場合、ステップＳ５において充
電が終了する。そうでない場合、ステップＳ３における
定電圧充電が継続される。In step S4, it is determined whether the battery current of the secondary battery B has dropped to a predetermined value I0. If it is determined that the battery current has dropped, the charging control switch 15 is opened in step S5 to charge the battery. Ends. On the other hand, if it is not determined that the predetermined time T0 has elapsed, it is determined in step S6 based on the output of the timer circuit 14 that counts the charging time from the start of charging, whether the predetermined time T0 has elapsed, Charging ends in step S5. If not, the constant voltage charging in step S3 is continued.
【００２５】以上の充電動作において、所定電圧Ｖ1、
所定値Ｉ0及び所定時間Ｔ0の条件は、充電中の二次電池
Ｂの周囲温度に基づいて適宜に設定される。図３は斯る
設定動作を示すフローチャートである。In the above charging operation, a predetermined voltage V1,
The conditions of the predetermined value I0 and the predetermined time T0 are appropriately set based on the ambient temperature of the secondary battery B during charging. FIG. 3 is a flowchart showing such setting operation.
【００２６】まず、ステップＳ１１において、ある時間
Ｔａが経過したかどうかが判断され、時間Ｔａが経過す
ると、ステップＳ１２に進む。この時間Ｔａは、充電開
始時の不安定状態における誤動作を防止するための時間
であり、３〜１０分程度とすればよい。First, in step S11, it is determined whether or not a certain time Ta has passed. When the time Ta has passed, the process proceeds to step S12. This time Ta is a time for preventing malfunction in an unstable state at the start of charging, and may be about 3 to 10 minutes.
【００２７】ステップＳ１２において、充電電流Ｉｂが
検出され、続いて、ステップＳ１３において、検出され
た充電電流ＩｂがＡ＜Ｉｂ＜Ｂを満足する値であるか否
かが判断される。ここで、値Ａ及びＢは、図４に示すよ
うに、充電動作が定電流充電から定電圧充電に移行した
直後の電流を測定するべく設定されている。In step S12, the charging current Ib is detected, and then in step S13, it is determined whether or not the detected charging current Ib is a value satisfying A <Ib <B. Here, the values A and B are set to measure the current immediately after the charging operation shifts from the constant current charging to the constant voltage charging, as shown in FIG.
【００２８】ステップＳ１３において、充電電流Ｉｂ
が、Ａ＜Ｉｂ＜Ｂであると判断されると、ステップＳ１
４において、その充電電流Ｉｂが、第１の電流値Ｉ1と
して記憶保持される。そして、ステップＳ１５及びステ
ップＳ１６において、第１の電流値Ｉ1検出から時間Ｔ
ｂ（この時間は、数分程度に設定される）経過後の第２
の電流値Ｉ2が検出され、記憶保持される。In step S13, the charging current Ib
However, if it is determined that A <Ib <B, then step S1
In 4, the charging current Ib is stored and held as the first current value I1. Then, in steps S15 and S16, the time T from the detection of the first current value I1
Second after b (this time is set to several minutes)
Current value I2 is detected and stored.
【００２９】ステップＳ１７において、第１の電流値と
第２の電流値との差（Ｉ1−Ｉ2）、即ち、充電電流の減
少度合が算出され、続いて、ステップＳ１８において、
充電電流の減少度合を下に前述の参照テーブルを参照し
て、充電中の二次電池Ｂの周囲温度が求められる。In step S17, the difference (I1−I2) between the first current value and the second current value, that is, the degree of decrease of the charging current is calculated, and subsequently, in step S18,
The ambient temperature of the secondary battery B during charging is obtained by referring to the above-mentioned reference table with the degree of decrease in the charging current as a reference.
【００３０】ステップＳ１９において、周囲温度の算出
が３回行われたか否かが判断され、３回行われるまで、
ステップＳ１２〜Ｓ１９のループを回る。In step S19, it is judged whether or not the ambient temperature has been calculated three times.
The loop of steps S12 to S19 is repeated.
【００３１】斯る算出が３回行われると、ステップＳ２
０において、演算回路１２は、充電中の二次電池Ｂの周
囲温度に基づいて、適宜の充電条件を設定する。即ち、
演算回路１２は、周囲温度が高い程、Ｄ／Ａ変換器１０
Ｂへの出力値が小さくなるように制御する。これによ
り、定電圧充電回路１０は、定電圧充電時の定電圧値Ｖ
1が低くなるように制御する。When such calculation is performed three times, step S2
At 0, the arithmetic circuit 12 sets appropriate charging conditions based on the ambient temperature of the secondary battery B being charged. That is,
The operation circuit 12 has a higher D / A converter 10 as the ambient temperature becomes higher.
The output value to B is controlled to be small. As a result, the constant voltage charging circuit 10 causes the constant voltage value V during constant voltage charging to be constant.
Control so that 1 becomes low.
【００３２】また、演算回路１２は、図５に示すよう
に、周囲温度が高い程、二次電池Ｂの満充電検出のため
の充電電流の所定値Ｉ0を大きな値（Ｉ1＞Ｉ2＞Ｉ3）と
する。As shown in FIG. 5, the arithmetic circuit 12 increases the predetermined value I0 of the charging current for detecting the full charge of the secondary battery B as the ambient temperature is higher (I1>I2> I3). And
【００３３】更に、演算回路１２は、図６に示すよう
に、周囲温度が高い程、二次電池Ｂの充電を強制的に終
了するための所定時間Ｔ0を短い値（Ｔ1＜Ｔ2）とす
る。この場合、高温状態で長時間にわたり、二次電池Ｂ
が充電されることはなく、二次電池Ｂの劣化が抑制され
る。Further, as shown in FIG. 6, the arithmetic circuit 12 sets the predetermined time T0 for forcibly ending the charging of the secondary battery B to a shorter value (T1 <T2) as the ambient temperature is higher. . In this case, the secondary battery B is kept in a high temperature state for a long time.
Is not charged, and deterioration of the secondary battery B is suppressed.
【００３４】[0034]
【発明の効果】本発明によれば、二次電池の充電条件
を、二次電池の周囲温度に応じて適宜に設定するので、
二次電池を高温雰囲気中で高電圧まで充電したり、直時
間にわたって充電することがなくなる。従って、周囲温
度に応じて最適な充電を行うことができ、二次電池の劣
化を防止することができる。According to the present invention, since the charging condition of the secondary battery is appropriately set according to the ambient temperature of the secondary battery,
There is no need to charge the secondary battery to a high voltage in a high temperature atmosphere or to charge it for a direct time. Therefore, optimal charging can be performed according to the ambient temperature, and deterioration of the secondary battery can be prevented.
【００３５】更に、本発明によれば、二次電池の充電中
の周囲温度は、二次電池の充電電流の変化度合いを検出
することにより測定しているので、特別な温度検出器を
設ける必要がなく、構造の簡略化、コストの低減化を図
ることができる。Furthermore, according to the present invention, since the ambient temperature during charging of the secondary battery is measured by detecting the degree of change in the charging current of the secondary battery, it is necessary to provide a special temperature detector. Thus, the structure can be simplified and the cost can be reduced.
【図１】本発明の一実施例を示すブロック回路図であ
る。FIG. 1 is a block circuit diagram showing an embodiment of the present invention.
【図２】本発明の動作を示すフローチャートである。FIG. 2 is a flowchart showing the operation of the present invention.
【図３】本発明の動作を示すフローチャートである。FIG. 3 is a flowchart showing the operation of the present invention.
【図４】充電電流の特性を示す特性図である。FIG. 4 is a characteristic diagram showing characteristics of charging current.
【図５】本発明の動作を説明するための特性図である。FIG. 5 is a characteristic diagram for explaining the operation of the present invention.
【図６】本発明の動作を説明するための特性図である。FIG. 6 is a characteristic diagram for explaining the operation of the present invention.
１ 電源回路 ２ 充電制御回路 １０ 定電圧充電回路 １１ 定電流充電回路 １２ 演算回路 1 Power Supply Circuit 2 Charging Control Circuit 10 Constant Voltage Charging Circuit 11 Constant Current Charging Circuit 12 Arithmetic Circuit
Claims (3)
定値まで低下すると充電を終了する充電方法において、
前記所定値は、前記二次電池の充電中の周囲温度が高い
ほど大きく設定されることを特徴とする二次電池の充電
方法。1. A charging method in which a secondary battery is charged with a constant voltage and charging is terminated when the charging current drops to a predetermined value,
The method of charging a secondary battery, wherein the predetermined value is set to be larger as the ambient temperature during charging of the secondary battery is higher.
定時間に達すると充電を終了する充電方法において、前
記所定時間は、前記二次電池の充電中の周囲温度が高い
ほど短く設定されることを特徴とする二次電池の充電方
法。2. A charging method of charging a secondary battery with a constant voltage and ending charging when the charging time reaches a predetermined time, wherein the predetermined time is set shorter as the ambient temperature during charging of the secondary battery is higher. A method of charging a secondary battery, comprising:
次電池の充電電流の低下度合いに基づいて測定すること
を特徴とする請求項１または請求項２の二次電池の充電
方法。3. The method of charging a secondary battery according to claim 1, wherein the ambient temperature during charging of the secondary battery is measured based on a degree of decrease in charging current of the secondary battery. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02020393A JP3268866B2 (en) | 1993-02-08 | 1993-02-08 | Rechargeable battery charging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02020393A JP3268866B2 (en) | 1993-02-08 | 1993-02-08 | Rechargeable battery charging method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06237539A true JPH06237539A (en) | 1994-08-23 |
| JP3268866B2 JP3268866B2 (en) | 2002-03-25 |
Family
ID=12020612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02020393A Expired - Fee Related JP3268866B2 (en) | 1993-02-08 | 1993-02-08 | Rechargeable battery charging method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3268866B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005287092A (en) * | 2004-03-26 | 2005-10-13 | Matsushita Electric Works Ltd | Charger and rechargeable electric apparatus set equipped with the same |
| JP2007274813A (en) * | 2006-03-31 | 2007-10-18 | Hitachi Koki Co Ltd | Charging system |
| JP2008067420A (en) * | 2006-09-04 | 2008-03-21 | Toshiba Corp | Portable apparatus |
| JP2009106118A (en) * | 2007-10-25 | 2009-05-14 | Hitachi Koki Co Ltd | Charging device |
| JP2009532012A (en) * | 2006-03-27 | 2009-09-03 | ソニー エリクソン モバイル コミュニケーションズ， エービー | Battery charging temperature control |
| JP2016032335A (en) * | 2014-07-28 | 2016-03-07 | パーパス株式会社 | Battery charge circuit, power supply device, cogeneration system and battery charge method |
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| JPH01156477A (en) * | 1987-12-14 | 1989-06-20 | Furukawa Electric Co Ltd:The | Shower electrode for plasma cvd device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5674930U (en) * | 1979-11-15 | 1981-06-19 | ||
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| JPS6450720A (en) * | 1987-08-20 | 1989-02-27 | Matsushita Electric Ind Co Ltd | Controller for charging of secondary cell |
| JPH01156477A (en) * | 1987-12-14 | 1989-06-20 | Furukawa Electric Co Ltd:The | Shower electrode for plasma cvd device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005287092A (en) * | 2004-03-26 | 2005-10-13 | Matsushita Electric Works Ltd | Charger and rechargeable electric apparatus set equipped with the same |
| JP2009532012A (en) * | 2006-03-27 | 2009-09-03 | ソニー エリクソン モバイル コミュニケーションズ， エービー | Battery charging temperature control |
| JP2007274813A (en) * | 2006-03-31 | 2007-10-18 | Hitachi Koki Co Ltd | Charging system |
| JP2008067420A (en) * | 2006-09-04 | 2008-03-21 | Toshiba Corp | Portable apparatus |
| JP2009106118A (en) * | 2007-10-25 | 2009-05-14 | Hitachi Koki Co Ltd | Charging device |
| JP2016032335A (en) * | 2014-07-28 | 2016-03-07 | パーパス株式会社 | Battery charge circuit, power supply device, cogeneration system and battery charge method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3268866B2 (en) | 2002-03-25 |
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