JPH11238529A - Battery pack - Google Patents
Battery packInfo
- Publication number
- JPH11238529A JPH11238529A JP10039955A JP3995598A JPH11238529A JP H11238529 A JPH11238529 A JP H11238529A JP 10039955 A JP10039955 A JP 10039955A JP 3995598 A JP3995598 A JP 3995598A JP H11238529 A JPH11238529 A JP H11238529A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- time
- battery pack
- leds
- led
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ノートパソコン、
携帯電話、パワーツール、及びパワーアシスト自転車な
どに用いられる電池パック、特にパワーアシスト自転車
など負荷電流が大きく、電流変動の大きい負荷に対応し
て電力を供給する電池パックに関する。The present invention relates to a notebook computer,
The present invention relates to a battery pack used for a mobile phone, a power tool, a power assisted bicycle, and the like, and particularly to a battery pack such as a power assisted bicycle that supplies a large load current and supplies power corresponding to a load having a large current fluctuation.
【０００２】[0002]
【従来の技術】図２のブロック図に示すように従来の電
池パック８は、電池残容量の表示をＬＥＤの点灯数で表
示しているのが一般的である。2. Description of the Related Art As shown in the block diagram of FIG. 2, a conventional battery pack 8 generally indicates the remaining battery capacity by the number of lighted LEDs.
【０００３】図２は、８個のニッケル−水素蓄電池を直
列接続した電池ブロック３と、電池ブロック３の残容量
を表示する５個のＬＥＤ６と、電池ブロック３の残容量
の演算や充電警告等を行う回路基板上にあるＩＣからな
る制御回路４とおよび機器本体２を示すブロック図であ
る。FIG. 2 shows a battery block 3 in which eight nickel-hydrogen storage batteries are connected in series, five LEDs 6 for displaying the remaining capacity of the battery block 3, a calculation of the remaining capacity of the battery block 3, a charge warning, and the like. FIG. 2 is a block diagram showing a control circuit 4 composed of an IC on a circuit board for performing the above and a device main body 2.
【０００４】電池パック８と機器本体２は、電池パック
８側の＋端子と機器本体２側の＋端子と、同じく電池パ
ック８側の−端子と機器本体２側の−端子とがコネクタ
等により電気接続されている。The battery pack 8 and the device main body 2 are connected by a connector or the like with a + terminal on the battery pack 8 side and a + terminal on the device main body 2 side, and a − terminal on the battery pack 8 side and a − terminal on the device main body 2 side. Electrically connected.
【０００５】次に、図２における各回路の動作を以下に
説明する。Next, the operation of each circuit in FIG. 2 will be described below.
【０００６】電池ブロック３からの電流は、負荷７と電
流検出抵抗Ｒｂを通って電池ブロック３に戻る。また、
電池ブロック３からの電圧は、機器本体２のノイズを除
去する為の抵抗ＲａとコンデンサＣとで構成された平滑
回路と、一定電圧を保持するためのレギュレータ回路５
とを通して、制御回路４とＬＥＤ６に電源電圧として供
給される。この供給された電圧によって制御回路４が動
作し、またＬＥＤ６が点灯する。[0006] The current from the battery block 3 returns to the battery block 3 through the load 7 and the current detection resistor Rb. Also,
The voltage from the battery block 3 is supplied to a smoothing circuit composed of a resistor Ra and a capacitor C for removing noise of the device body 2 and a regulator circuit 5 for maintaining a constant voltage.
, Power is supplied to the control circuit 4 and the LED 6 as a power supply voltage. The control circuit 4 operates by the supplied voltage, and the LED 6 is turned on.
【０００７】電流検出抵抗Ｒｂで生じた電圧は、Ａ−Ｄ
変換器４１でデジタルデータに変換されて残容量演算器
４２に送られ、ここで電流積算演算を行い、電池の残容
量が演算処理される。この電池の残容量は、ＬＥＤコン
トロール器４３ｂに送られる。ＬＥＤコントロール器４
３ｂは、この電池の残容量の多少に比例してＬＥＤ６の
点灯数を決め、ＬＥＤ６に信号を送る。この信号を受け
てＬＥＤ６は、電池の残容量をＬＥＤ６の点灯数によっ
て表示する。The voltage generated at the current detection resistor Rb is A-D
The data is converted into digital data by the converter 41 and sent to the remaining capacity calculator 42, where the current integration calculation is performed, and the remaining capacity of the battery is calculated. The remaining capacity of the battery is sent to the LED controller 43b. LED controller 4
3b determines the lighting number of the LED 6 in proportion to the remaining capacity of the battery, and sends a signal to the LED 6. Receiving this signal, the LED 6 displays the remaining capacity of the battery by the number of lightings of the LED 6.
【０００８】電池の放電電圧は、Ｒｃ，Ｒｄにより分圧
され、ＡＤ変換器４４でデジタルデータに変換されて電
圧比較器４５に入力される。電圧設定回路４６は、予め
設定された電池の放電電圧値を記憶している。この設定
された放電電圧値とその時点での電池の放電電圧とを電
圧比較器４５で比較し、電池の放電電圧が設定された放
電電圧値以下になったことを検出したときから、時間カ
ウント器４７によって時間がカウントされる。The discharge voltage of the battery is divided by Rc and Rd, converted into digital data by an AD converter 44, and input to a voltage comparator 45. The voltage setting circuit 46 stores a preset discharge voltage value of the battery. The set discharge voltage value and the discharge voltage of the battery at that time are compared by the voltage comparator 45, and the time count is counted from when it is detected that the discharge voltage of the battery has become equal to or less than the set discharge voltage value. The time is counted by the container 47.
【０００９】時間設定回路４８は、予め設定された時間
値を記憶している。この時間値と時間カウント器４７に
よってカウントされた時間を時間比較器４９で比較し、
時間設定値よりもカウントされた時間が長くなった際
に、充電要求の警告信号がＬＥＤコントロール器４３ｂ
に送られる。ＬＥＤコントロール器４３ｂは、充電要求
の警告信号を受けるとＬＥＤ６を点滅させて、ユーザー
に充電の時期を知らせる。The time setting circuit 48 stores a preset time value. This time value is compared with the time counted by the time counter 47 by the time comparator 49,
When the counted time becomes longer than the time set value, a warning signal of the charging request is issued to the LED controller 43b.
Sent to When receiving the charge request warning signal, the LED controller 43b blinks the LED 6 to notify the user of the charging time.
【００１０】[0010]
【発明が解決しようとする課題】上記のように抵抗Ｒａ
とコンデンサＣで構成される平滑回路は、機器本体のノ
イズを除去する作用がある。特にパワーアシスト自転車
等の機器本体の負荷は、デジタル制御されたモータを使
用する場合が多く、その周波数の高いモータノイズによ
る残容量演算、表示の誤動作を防ぐ為にこの平滑回路は
必須となる。また、ＬＥＤの点灯光量を一定にする観点
からＬＥＤに供給される電源電圧は、平滑回路とレギュ
レータ回路を経由した電源ラインより取る必要がある。
さらに、複数個のＬＥＤを点灯させる為にはＬＥＤ１個
当たり最低５ｍＡ程度の電流が必要となる。このため、
抵抗Ｒａによる電池ブロックの電圧降下分に加えてＬＥ
Ｄが点灯することによって電池ブロックがさらに電圧降
下する。この影響が顕著に現れるパワーアシスト自転車
の例をとると、ＬＥＤが４個中３個点灯している状態、
つまり電池の残容量がまだ十分あっても、坂道を走行す
るなどの大きな負荷が電池ブロックにかかり電池電圧が
大きく降下する。これにＬＥＤが３個点灯していること
による電池電圧の降下分が加わる。このため、電池ブロ
ックの電圧は、電池に充電警告するための電圧設定値よ
りも低くなり、ＬＥＤは、３個の点灯状態から点滅の充
電警告表示に急に変わってしまう事があった。このよう
に電池の残容量が十分あるにもかかわらず、充電警告表
示されるため、不必要な充電がなされて電池寿命が短く
なるという問題があった。SUMMARY OF THE INVENTION As described above, the resistance Ra
The smoothing circuit composed of the capacitor C and the capacitor C has an operation of removing noise of the device body. In particular, a digitally controlled motor is often used to load the main body of a power assisted bicycle or the like, and this smoothing circuit is indispensable in order to prevent remaining capacity calculation and display malfunction due to motor noise having a high frequency. Further, from the viewpoint of keeping the lighting light amount of the LED constant, the power supply voltage supplied to the LED needs to be obtained from a power supply line via a smoothing circuit and a regulator circuit.
Further, in order to turn on a plurality of LEDs, a current of at least about 5 mA is required for each LED. For this reason,
In addition to the voltage drop of the battery block due to the resistance Ra, LE
When D lights up, the voltage of the battery block further drops. Taking the example of a power assisted bicycle where this effect is noticeable, three LEDs out of four light up,
In other words, even when the remaining capacity of the battery is still sufficient, a large load such as running on a slope is applied to the battery block, and the battery voltage drops significantly. In addition to this, a drop in battery voltage due to the lighting of three LEDs is added. For this reason, the voltage of the battery block becomes lower than the voltage setting value for warning the battery of charge, and the LED may suddenly change from the three lighting states to the blinking charge warning display. As described above, since the charging warning is displayed even though the remaining capacity of the battery is sufficient, there is a problem that unnecessary charging is performed and the battery life is shortened.
【００１１】本発明は上記問題点を解決するもので、残
容量表示用ＬＥＤの点灯数のいかんによらず、正確に充
電要求の警告表示が出来る電池パックを提供することを
目的とする。An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a battery pack capable of accurately displaying a charge request warning regardless of the number of lighted remaining capacity display LEDs.
【００１２】[0012]
【課題を解決するための手段】上記目的を達成するため
に本発明は、１個又は複数個の２次電池と、電池残容量
表示用の複数個のＬＥＤと、回路基板とを備え、回路基
板上の制御回路によって電池の残容量を演算処理し、そ
の出力信号によるＬＥＤの点灯数の多少に比例して電池
の残容量を表示し、かつ電池の放電電圧が予め設定した
放電電圧値以下となったことを検出したときから時間を
カウントし、この時間が予め設定された時間値よりも長
くなった際にＬＥＤの点滅によって充電要求の警告表示
を行う電池パックであって、回路基板上の制御回路によ
って、設定時間値をＬＥＤの点灯数に応じて変化させる
構成とした。In order to achieve the above object, the present invention provides a circuit comprising one or more secondary batteries, a plurality of LEDs for displaying the remaining battery capacity, and a circuit board. The remaining charge of the battery is calculated by the control circuit on the board, the remaining charge of the battery is displayed in proportion to the number of lighting of the LED by the output signal, and the discharge voltage of the battery is equal to or less than a preset discharge voltage value. The battery pack counts time from the time when it is detected that the battery pack has been detected, and when this time is longer than a preset time value, a blinking LED indicates a charge request warning display. The control circuit changes the set time value in accordance with the number of lighted LEDs.
【００１３】[0013]
【発明の実施の形態】本発明の請求項１記載の発明は、
前記の構成とした電池パックであり、とくに回路基板上
の制御回路によって設定時間値をＬＥＤの点灯数に応じ
て変化させるものである。BEST MODE FOR CARRYING OUT THE INVENTION
A battery pack having the above-described configuration, in which a set time value is changed by a control circuit on a circuit board in accordance with the number of lit LEDs.
【００１４】請求項２記載の発明は、前記回路基板上の
制御回路は、前記ＬＥＤの点灯数の多少に比例して前記
設定時間値を設定しているものである。According to a second aspect of the present invention, the control circuit on the circuit board sets the set time value in proportion to the number of lights of the LED.
【００１５】このことにより、ＬＥＤの点灯表示に影響
されなく、電池に対して正確に充電要求の警告表示を行
なう事が出来る。したがって、ユーザーは正しい時期に
充電を行なうことが出来、電池パックの性能を十分に引
き出す事が出来る。[0015] Thus, the warning display of the charge request can be accurately performed on the battery without being affected by the lighting display of the LED. Therefore, the user can charge the battery at the right time, and can sufficiently bring out the performance of the battery pack.
【００１６】[0016]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１７】図１は本発明の実施例における電池パック
１と、機器本体２のブロック図を示す。図１において、
電池パック１は、８個のニッケル−水素蓄電池からなる
電池ブロック３，ＩＣからなる制御回路４、抵抗Ｒａと
コンデンサＣで構成される平滑回路、レギュレータ回路
５および電池の残容量と電池の充電警告表示を行う５個
のＬＥＤ６から構成されている。FIG. 1 is a block diagram showing a battery pack 1 and an apparatus main body 2 according to an embodiment of the present invention. In FIG.
The battery pack 1 includes a battery block 3 composed of eight nickel-hydrogen storage batteries, a control circuit 4 composed of an IC, a smoothing circuit composed of a resistor Ra and a capacitor C, a regulator circuit 5, a remaining capacity of the battery, and a charge warning of the battery. It is composed of five LEDs 6 for displaying.
【００１８】電池パック１と機器本体２は、電池パック
１側の＋端子と機器本体２側の＋端子と、同じく電池パ
ック１側の−端子と機器本体２側の−端子とがコネクタ
等により電気接続されている。The battery pack 1 and the equipment body 2 are connected by a connector or the like with a + terminal on the battery pack 1 side and a + terminal on the equipment body 2 side, and a − terminal on the battery pack 1 side and a − terminal on the equipment body 2 side. Electrically connected.
【００１９】電池パック１内の動作を以下に説明する。The operation inside the battery pack 1 will be described below.
【００２０】電池ブロック３からの電流は、負荷７と電
流検出抵抗Ｒｂを通って電池ブロック３に戻る。The current from the battery block 3 returns to the battery block 3 through the load 7 and the current detection resistor Rb.
【００２１】電流検出抵抗Ｒｂで生じた電圧は、Ａ−Ｄ
変換器４１でデジタルデータに変換されて残容量演算器
４２に送られ、ここで電流積算演算を行い、電池の残容
量が演算処理される。この電池の残容量は、ＬＥＤコン
トロール器４３ａに送られる。ＬＥＤコントロール器４
３ａは、この電池の残容量の多少に比例してＬＥＤ７の
点灯数を決め、ＬＥＤ６に信号を送る。この信号を受け
てＬＥＤ６は、電池の残容量をＬＥＤ６の点灯数によっ
て表示する。The voltage generated at the current detection resistor Rb is expressed by AD
The data is converted into digital data by the converter 41 and sent to the remaining capacity calculator 42, where the current integration calculation is performed, and the remaining capacity of the battery is calculated. The remaining capacity of the battery is sent to the LED controller 43a. LED controller 4
3a determines the lighting number of the LED 7 in proportion to the remaining capacity of the battery, and sends a signal to the LED 6. Receiving this signal, the LED 6 displays the remaining capacity of the battery by the number of lightings of the LED 6.
【００２２】電池の放電電圧は、Ｒｃ，Ｒｄにより分圧
され、ＡＤ変換器４４でデジタルデータに変換されて電
圧比較器４５に入力される。電圧設定回路４６は、予め
設定された電池の放電電圧値を記憶している。この設定
された放電電圧値とその時点での電池の放電電圧とを電
圧比較器４５で比較し、電池の放電電圧が設定された放
電電圧値以下になったことを検出したときから、時間カ
ウント器４７によって時間がカウントされる。The battery discharge voltage is divided by Rc and Rd, converted into digital data by an AD converter 44, and input to a voltage comparator 45. The voltage setting circuit 46 stores a preset discharge voltage value of the battery. The set discharge voltage value and the discharge voltage of the battery at that time are compared by the voltage comparator 45, and the time count is counted from when it is detected that the discharge voltage of the battery has become equal to or less than the set discharge voltage value. The time is counted by the container 47.
【００２３】時間設定回路４８では、ＬＥＤコントロー
ル器４３ａより出力されるＬＥＤ６の点灯数（５個、４
個、３個、２個、１個点灯）の多少に比例して設定され
た時間を記憶しており、ＬＥＤの点灯数に応じた時間が
選択される。例えば、ＬＥＤ６の点灯数が５個（点灯す
るために必要な電流値が２５ｍＡ）の場合は時間設定値
７分を選択し、ＬＥＤ６の点灯数が３個（点灯するため
に必要な電流値が１５ｍＡ）の場合は時間設定値５分を
選択する。In the time setting circuit 48, the number of lightings of the LED 6 output from the LED controller 43a (5, 4
, Three, two, one) are stored, and a time set according to the number of lit LEDs is selected. For example, when the lighting number of the LED 6 is 5 (the current value required for lighting is 25 mA), the time setting value of 7 minutes is selected, and the lighting number of the LED 6 is 3 (the current value required for lighting is In the case of 15 mA), a time setting value of 5 minutes is selected.
【００２４】このように選択された時間設定値と時間カ
ウント器４７でカウントされた時間を時間比較器４９で
比較し、時間設定値よりカウントされた時間が長くなっ
た際に、充電要求の警告信号がＬＥＤコントロール器４
３ａに送られる。ＬＥＤコントロール器４３ａは充電要
求の警告信号を受けると５個のＬＥＤ７を点滅させて、
ユーザーに充電の時期を知らせる。The time set value thus selected is compared with the time counted by the time counter 47 by the time comparator 49. When the time counted from the time set value becomes longer, a warning of the charging request is issued. Signal is LED controller 4
3a. The LED controller 43a blinks the five LEDs 7 when receiving the warning signal of the charging request,
Notify the user when to charge.
【００２５】[0025]
【発明の効果】以上のように本発明は、複数個のＬＥＤ
を用いて残容量表示を行なう電池パックにおいて、回路
基板上の制御回路によって電池の残容量を演算処理し、
その出力信号によるＬＥＤの点灯数の多少に比例して電
池の残容量を表示し、かつ電池放電電圧が予め設定した
放電電圧値以下となったことを検出したときから、予め
設定された時間値より時間が経過した際にＬＥＤの点滅
によって充電要求の警告表示を行う電池パックであっ
て、回路基板上の制御回路によって、設定された時間値
をＬＥＤの点灯数に応じて変化させることによって、Ｌ
ＥＤの点灯表示に影響されなく、ユーザーに対して正確
に充電要求の警告表示を行なう事が出来る。したがっ
て、ユーザーは充電要求が出された正しい時期に充電を
行なうことが出来、電池パックの性能を十分に発揮させ
る事が出来る。As described above, the present invention provides a plurality of LEDs.
In a battery pack that displays the remaining capacity by using a control circuit on the circuit board, the remaining capacity of the battery is arithmetically processed,
The remaining time of the battery is displayed in proportion to the number of lighting of the LED by the output signal, and a time value set in advance from a time when it is detected that the battery discharge voltage has become equal to or less than a preset discharge voltage value. A battery pack that performs a warning display of a charge request by blinking an LED when a longer time elapses, and by changing a set time value according to the number of lighted LEDs by a control circuit on a circuit board, L
The warning display of the charging request can be accurately displayed to the user without being affected by the lighting display of the ED. Therefore, the user can perform charging at the correct time when the charging request is issued, and can sufficiently exert the performance of the battery pack.
【図１】本発明の実施例における電池パックを示すブロ
ック図FIG. 1 is a block diagram showing a battery pack according to an embodiment of the present invention.
【図２】従来の電池パックを示すブロック図FIG. 2 is a block diagram showing a conventional battery pack.
１ 電池パック ２ 機器本体 ３ 電池ブロック ４ 制御回路 ５ レギュレータ回路 ６ ＬＥＤ ７ 負荷 REFERENCE SIGNS LIST 1 battery pack 2 device body 3 battery block 4 control circuit 5 regulator circuit 6 LED 7 load
Claims (2)
表示用の複数個のＬＥＤと、回路基板とを備え、前記回
路基板上の制御回路によって前記電池の残容量を演算処
理し、その出力信号による前記ＬＥＤの点灯数の多少に
比例して前記電池の残容量を表示し、かつ前記電池の放
電電圧が予め設定した放電電圧値以下となったことを検
出したときから時間をカウントし、この時間が予め設定
された時間値よりも長くなった際に前記ＬＥＤの点滅に
よって充電要求の警告表示を行う電池パックであって、
前記回路基板上の制御回路によって、前記設定時間値を
前記ＬＥＤの点灯数に応じて変化させる電池パック。1. A battery comprising one or more secondary batteries, a plurality of LEDs for displaying remaining battery capacity, and a circuit board, wherein a control circuit on the circuit board calculates the remaining capacity of the battery. The remaining capacity of the battery is displayed in proportion to the number of lightings of the LED by the output signal, and the time from when it is detected that the discharge voltage of the battery has become equal to or less than a preset discharge voltage value is measured. A battery pack that performs a warning display of a charge request by blinking the LED when this time is longer than a preset time value,
A battery pack for changing the set time value according to the number of lighting of the LED by a control circuit on the circuit board.
の点灯数の多少に比例して前記設定時間値を設定してい
る請求項１記載の電池パック。2. A control circuit on the circuit board includes:
2. The battery pack according to claim 1, wherein the set time value is set in proportion to the number of lights of the battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03995598A JP3675156B2 (en) | 1998-02-23 | 1998-02-23 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03995598A JP3675156B2 (en) | 1998-02-23 | 1998-02-23 | Battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11238529A true JPH11238529A (en) | 1999-08-31 |
| JP3675156B2 JP3675156B2 (en) | 2005-07-27 |
Family
ID=12567389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03995598A Expired - Fee Related JP3675156B2 (en) | 1998-02-23 | 1998-02-23 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3675156B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002208443A (en) * | 2001-01-11 | 2002-07-26 | Sanyo Electric Co Ltd | Battery pack |
| JP2003109673A (en) * | 2001-09-28 | 2003-04-11 | Nec Mobile Energy Kk | Battery pack with warning function |
| JP2006525039A (en) * | 2003-05-01 | 2006-11-09 | フリンダーズ テクノロジーズ ピーティワイ リミテッド | Device for applying light stimulus |
| JP2009130260A (en) * | 2007-11-27 | 2009-06-11 | Sanyo Electric Co Ltd | Pack battery |
| WO2013002337A1 (en) * | 2011-06-28 | 2013-01-03 | 株式会社マキタ | Charging system and battery pack |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01235169A (en) * | 1988-03-15 | 1989-09-20 | Sony Corp | Battery with residual capacity indicating function |
| JPH0629011A (en) * | 1992-07-08 | 1994-02-04 | Sony Corp | Battery type power supply device |
| JPH06150979A (en) * | 1992-11-13 | 1994-05-31 | Matsushita Electric Works Ltd | Battery pack |
| JPH0935762A (en) * | 1995-07-24 | 1997-02-07 | Sanyo Electric Co Ltd | Pack battery with remaining capacity display |
| JPH11233163A (en) * | 1998-02-13 | 1999-08-27 | Matsushita Electric Ind Co Ltd | Battery pack |
-
1998
- 1998-02-23 JP JP03995598A patent/JP3675156B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01235169A (en) * | 1988-03-15 | 1989-09-20 | Sony Corp | Battery with residual capacity indicating function |
| JPH0629011A (en) * | 1992-07-08 | 1994-02-04 | Sony Corp | Battery type power supply device |
| JPH06150979A (en) * | 1992-11-13 | 1994-05-31 | Matsushita Electric Works Ltd | Battery pack |
| JPH0935762A (en) * | 1995-07-24 | 1997-02-07 | Sanyo Electric Co Ltd | Pack battery with remaining capacity display |
| JPH11233163A (en) * | 1998-02-13 | 1999-08-27 | Matsushita Electric Ind Co Ltd | Battery pack |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002208443A (en) * | 2001-01-11 | 2002-07-26 | Sanyo Electric Co Ltd | Battery pack |
| JP2003109673A (en) * | 2001-09-28 | 2003-04-11 | Nec Mobile Energy Kk | Battery pack with warning function |
| JP2006525039A (en) * | 2003-05-01 | 2006-11-09 | フリンダーズ テクノロジーズ ピーティワイ リミテッド | Device for applying light stimulus |
| JP2009130260A (en) * | 2007-11-27 | 2009-06-11 | Sanyo Electric Co Ltd | Pack battery |
| WO2013002337A1 (en) * | 2011-06-28 | 2013-01-03 | 株式会社マキタ | Charging system and battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3675156B2 (en) | 2005-07-27 |
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