JP2800220B2 - Power supply for battery-powered electronic equipment - Google Patents
Power supply for battery-powered electronic equipmentInfo
- Publication number
- JP2800220B2 JP2800220B2 JP1009220A JP922089A JP2800220B2 JP 2800220 B2 JP2800220 B2 JP 2800220B2 JP 1009220 A JP1009220 A JP 1009220A JP 922089 A JP922089 A JP 922089A JP 2800220 B2 JP2800220 B2 JP 2800220B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- capacity
- discharge
- charge
- unit
- 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.)
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は携帯無線電話等の電池で駆動する電子機器の
電源装置に関し、特にNi−Cd電池等の充電可能な電池を
含む電池パックとして構成された電源装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device of a battery-driven electronic device such as a portable radio telephone, and more particularly to a power supply device including a rechargeable battery such as a Ni-Cd battery. Power supply device.
従来、携帯無線電話機等のような電池で駆動される機
器における電源装置は、電話機本体に対して着脱可能な
電池パックで構成されることが多い。この電池パックに
は、通常Ni−Cd電池等のように、充電して再使用可能な
電池が用いられる。2. Description of the Related Art Conventionally, a power supply device in a device driven by a battery, such as a portable wireless telephone, often includes a battery pack that is detachable from a telephone main body. For this battery pack, a battery that can be charged and reused, such as a Ni-Cd battery, is usually used.
そして、この電池パックの寿命を表示するために、従
来では発光ダイオード等の表示部を設けており、この発
光ダイオードが点灯されている間は電池パックの容量が
充分であり、電話機の正常な使用を保証するようになっ
ている。In order to indicate the life of the battery pack, a display unit such as a light emitting diode is conventionally provided. While the light emitting diode is lit, the capacity of the battery pack is sufficient, and the normal use of the telephone can be performed. Is to be guaranteed.
上述した従来の電池パックでは、現在の電池容量を保
証する表示構造を備えていはいるものの、電池残存容量
を検出してこれを表示する機能は備えてはいない。この
ため、終止電圧になって始めて電池容量が充分でないこ
とが確認でき、電話機が使用できなくなることがある。The above-described conventional battery pack has a display structure for guaranteeing the current battery capacity, but does not have a function of detecting the remaining battery capacity and displaying the same. For this reason, it can be confirmed that the battery capacity is not sufficient only after the end voltage is reached, and the telephone cannot be used in some cases.
このため、従来では電池に適当な負荷をかけた時の端
子電圧から電池残存容量を推定してこれを表示したり、
また充分に充電された電池が使用されることを前提とし
て機器の使用時間から残存容量を算出して表示する試み
がなされている。For this reason, in the past, the remaining battery capacity was estimated from the terminal voltage when an appropriate load was applied to the battery and displayed,
Attempts have been made to calculate and display the remaining capacity from the usage time of the device on the premise that a sufficiently charged battery is used.
しかしながら、実際の使用状態によって負荷条件が相
違される電話機等では、その使用態様，周囲温度，サイ
クル寿命，自己放電及び使用電流のバラツキ等により誤
差が大きくなり、残存容量を正確に表示することは困難
である。However, in telephones and the like in which the load conditions are different depending on the actual use state, the error becomes large due to the use mode, the ambient temperature, the cycle life, the self-discharge and the variation in the use current, and the remaining capacity cannot be accurately displayed. Have difficulty.
また、充電が充分でない電池の場合には、残存容量の
表示が意味をなさず、結果として機器使用者にとって参
考にならないという問題がある。In addition, in the case of a battery that is not sufficiently charged, there is a problem that the display of the remaining capacity is meaningless, and as a result, it is not useful to the user of the device.
本発明は上述した問題を解消し、残存容量を正確に表
示することが可能な電源装置を提供することを目的とす
る。An object of the present invention is to solve the above-described problem and to provide a power supply device capable of accurately displaying the remaining capacity.
本発明の電池駆動電子機器の電源装置は、電池駆動電
子機器の本体に電源を供給する充電可能な電池を備えた
電池パックとして構成されている。The power supply device of the battery-driven electronic device according to the present invention is configured as a battery pack including a rechargeable battery that supplies power to the main body of the battery-driven electronic device.
この電池パックには、電池の充電又は放電の状態及び
その電流を検出する充放電センサ部と、前記電池電圧を
基準電圧と比較する比較回路と、前記電池における充電
時間，放電時間，及び自己放電時間を検出するタイマ部
と、周囲温度を検出する温度センサ部と、各種演算のア
ルゴリズムや充電容量、放電容量及び自己放電容量を計
算する時の周囲温度による補正係数及びサイクル寿命に
よる補正係数からなるソフトを記憶するROM部と、この
ソフトに従って前記充放電センサ部及び温度センサ部の
検出値、前記比較回路の比較結果、並びに前記タイマ部
での検出時間に基づいて前記電池の充電容量，放電容
量，自己放電容量を演算し、かつ前記補正係数等による
補正演算を行なって電池の残存容量を算出するCPU部
と、このCPU部で演算された値及び算出された値を一時
記憶するRAM部と、前記電池を充電する充電器から前記
演算に利用されるフル充電情報を入力し、かつ少なくと
もRAM部に記憶された電池の残存容量及びこれに基づい
て得られるアラーム情報を前記電子機器の本体に出力す
るI/O部とを備えている。The battery pack includes a charge / discharge sensor unit for detecting the state of charge or discharge of the battery and its current, a comparison circuit for comparing the battery voltage with a reference voltage, a charge time, a discharge time, and a self-discharge time for the battery. It consists of a timer part that detects time, a temperature sensor part that detects ambient temperature, and a correction coefficient based on ambient temperature and a correction coefficient based on cycle life when calculating charging algorithms, discharging capacities, and self-discharging capacities. A ROM section for storing software, and a charge capacity and a discharge capacity of the battery based on detection values of the charge / discharge sensor section and the temperature sensor section, a comparison result of the comparison circuit, and a detection time of the timer section according to the software. , A CPU unit for calculating a self-discharge capacity and performing a correction operation based on the correction coefficient or the like to calculate a remaining capacity of a battery; and a value calculated by the CPU unit. And a RAM unit for temporarily storing the calculated value and a full charge information used for the calculation from a charger for charging the battery, and based on at least the remaining capacity of the battery stored in the RAM unit and An I / O unit for outputting alarm information obtained by the electronic device to a main body of the electronic device.
上述した構成では、周囲温度やサイクル寿命等を鑑み
ながら電池の充電容量，放電容量，自己放電容量を演算
し、かつ該電池の残存容量を正確に算出してアラーム情
報と共に表示させることが可能となる。With the above-described configuration, it is possible to calculate the charge capacity, the discharge capacity, and the self-discharge capacity of the battery while considering the ambient temperature, the cycle life, and the like, and to accurately calculate the remaining capacity of the battery and display it together with alarm information. Become.
次に、本発明を図面を参照して説明する。 Next, the present invention will be described with reference to the drawings.
第１図は本発明の電源装置をNi−Cd電池パックで構成
し、かつこの電池パックを携帯無線電話機に適用した一
実施例のブロック図である。FIG. 1 is a block diagram of an embodiment in which a power supply device of the present invention is constituted by a Ni-Cd battery pack, and the battery pack is applied to a portable radio telephone.
図において、１は携帯無線電話機,2は電池パック,3は
充電器である。In the figure, 1 is a portable radio telephone, 2 is a battery pack, and 3 is a charger.
電話機本体１は、アンテナ，無線送受信部5,ロジック
部6,キー操作部と表示部を含んだキーボード部7,各部に
適切な電圧を供給するための電源回路部8,電池パック２
より電源を供給するための正負の電源端子9,10で構成さ
れている。The telephone body 1 includes an antenna, a wireless transmission / reception unit 5, a logic unit 6, a keyboard unit 7 including a key operation unit and a display unit, a power supply circuit unit 8 for supplying an appropriate voltage to each unit, and a battery pack 2.
It comprises positive and negative power supply terminals 9 and 10 for supplying more power.
電池パック２はNi−Cd電池11を備え、この電池11に
は、該電池11の充放電の状態及び充放電の電流を検出す
る充放電センサ部12,電池11の終止電圧である内部基準
電圧と電池11の端子電圧とを比較する比較回路13を接続
している。The battery pack 2 includes a Ni-Cd battery 11. The battery 11 includes a charge / discharge sensor unit 12 for detecting a charge / discharge state and a charge / discharge current of the battery 11, and an internal reference voltage which is a final voltage of the battery 11. And a comparison circuit 13 for comparing the terminal voltage of the battery 11 with the comparison circuit 13.
前記充放電センサ部12は、第２図に一例を示すよう
に、インピーダンスの小さい抵抗14,この抵抗14の両端
に接続されたA/Dコンバータ15,16から構成され、抵抗14
の電池11側の電圧が他端の電圧より低い時に充電、高い
時に放電，等しい時に自己放電と判断する。また、電圧
差により充放電電流を求めることができる。As shown in FIG. 2, the charge / discharge sensor unit 12 includes a resistor 14 having a small impedance, and A / D converters 15 and 16 connected to both ends of the resistor 14.
When the voltage on the battery 11 side is lower than the voltage on the other end, it is determined that the battery is charged; Further, the charge / discharge current can be obtained from the voltage difference.
一方、前記充放電センサ部12,及び比較回路13は、周
囲温度を検出するための温度センサ部17,充電時間，放
電時間及び自己放電時間を検出するタイマ部18,各種基
本ソフトを記憶しているROM部19,充電容量，放電容量，
自己放電容量及び電池残存容量等の演算え処理を行うCP
U部20,充電容量，放電容量及び電池残存容量を一時記憶
するRAM部21,RAM部21に記憶された電池残存容量，バッ
テリアラーム及びメモリ効果アラーム等の情報を前記電
話機本体１のロジック部６にコネクタ23を通してシリア
ルデータとして送出し、或いは端子24を通して充電器３
からのフル充電（定格の充電状態）情報を入力するI/O
部22に夫々バスを通して接続されている。On the other hand, the charge / discharge sensor unit 12 and the comparison circuit 13 store a temperature sensor unit 17 for detecting an ambient temperature, a timer unit 18 for detecting a charge time, a discharge time and a self-discharge time, and various basic software. ROM section 19, charging capacity, discharging capacity,
CP that performs calculation processing such as self-discharge capacity and battery remaining capacity
U section 20, RAM section 21 for temporarily storing charging capacity, discharging capacity and remaining battery capacity, and information such as remaining battery capacity, battery alarm and memory effect alarm stored in RAM section 21 are stored in logic section 6 of telephone body 1. To the charger 3 through the connector 23, or to the charger 3 through the terminal 24.
To input full charge (rated charge status) information from the I / O
Each is connected to the unit 22 through a bus.
なお、前記ROM部19の基本ソフトとしては、充電容
量，放電容量及び自己放電容量から電池残存容量を算出
するためのアルゴリズム，充電容量，放電容量及び自己
放電容量を計算する時の周囲温度による補正係数及びサ
イクル寿命による補正係数等がある。The basic software of the ROM unit 19 includes an algorithm for calculating the remaining battery capacity from the charge capacity, the discharge capacity, and the self-discharge capacity, and correction based on the ambient temperature when calculating the charge capacity, the discharge capacity, and the self-discharge capacity. There are a coefficient and a correction coefficient depending on the cycle life.
更に、前記電池11には電話機本体１に接続するための
正負の電源端子25,26を接続し、かつ各部に安定化した
電源を供給するための安定化電源部27を接続している。
同様に、充電器３に接続するための正負の充電端子28,2
9を接続している。Further, the battery 11 is connected to positive and negative power supply terminals 25 and 26 for connection to the telephone body 1 and a stabilized power supply unit 27 for supplying stabilized power to each unit.
Similarly, the positive and negative charging terminals 28,2 for connecting to the charger 3
9 is connected.
充電器３は、充電部30,前記電池11を充電するための
正負の充電端子31,32,充電完了時にフル充電情報をI/O
部22に送出する端子33,及び入力電源端子34,35を備えて
いる。The charger 3 includes a charging unit 30, positive and negative charging terminals 31, 32 for charging the battery 11, and I / O of full charging information when charging is completed.
A terminal 33 for sending to the section 22 and input power terminals 34 and 35 are provided.
次に、以上の構成の電源装置の動作を説明する。ここ
で、電池11の容量を1000mAHとした時のフル充電時の電
池残存量Ａ＝1000,終止電圧時のリセット状態での電池
残存容量Ａ＝０とする。Next, the operation of the power supply device having the above configuration will be described. Here, when the capacity of the battery 11 is 1000 mAH, the remaining battery capacity A at the time of full charge is 1000, and the remaining battery capacity A in the reset state at the end voltage is 0.
（１）充電時 完全放電した電池を充電電流IC＝500mAで充電する時
を考えると、充電スタート後に、電池11の端子電圧が各
回路の動作電圧以上となると、CPU部20が初期化され、
同時にRAM部21に電池残存容量Ａ＝０が書き込まれる。
また、充放電センサ12からのデータにより、充電状態で
あること、充電電流ICが500mAであることが判断され
る。タイマ部18も同時にスタートし、１時間経過時には
CPU部20は、 １（Ｈ）×500（mA）＝500 と電池残存容量を判断し、データをRAM部21に送り記憶
する。(1) Charging When charging a completely discharged battery at a charging current I C = 500 mA, when the terminal voltage of the battery 11 becomes equal to or higher than the operating voltage of each circuit after the start of charging, the CPU unit 20 is initialized. ,
At the same time, the remaining battery capacity A = 0 is written into the RAM unit 21.
Further, the data from the charge-discharge sensor 12, it is charged, it is determined the charging current I C is 500mA. The timer unit 18 also starts at the same time, and when one hour elapses
The CPU unit 20 determines the remaining battery capacity as 1 (H) × 500 (mA) = 500 and sends the data to the RAM unit 21 for storage.
この時に、温度が例えば＋45℃と高いと、充電用温度
補正係数α＝0.8が加算され、 0.8×１（Ｈ）×400 と電池残存容量を判断する。また、充放電によるサイク
ル寿命が例えば約400回と長い電池の場合には、サイク
ル寿命係数β＝0.95が加算され、 0.95×１（Ｈ）×500（mA）＝475 と電池残存容量を判断する。At this time, if the temperature is as high as + 45 ° C., for example, the charging temperature correction coefficient α = 0.8 is added, and the battery remaining capacity is determined as 0.8 × 1 (H) × 400. Further, in the case of a battery having a long cycle life due to charging and discharging, for example, about 400 times, the cycle life coefficient β = 0.95 is added, and the remaining battery capacity is determined as 0.95 × 1 (H) × 500 (mA) = 475. .
（２）放電時 フル充電された電池11を待ち受け1H（待ち受け電流＝
50mA），通話0.2H（通話電流＝700mA）使用したとする
と、充放電センサ部12及びタイマ部18からのデータ及び
負荷係数γ＝1.05を加算すると、 1000（mAH）−１（Ｈ）×50（mA）−0.2（Ｈ）×700（mA）×1.05＝803 と電池残存容量を判断し、RAM部21に記憶する。この時
に温度が例えば０℃と低い場合には、放電用温度補正係
数δ＝0.95が加算され、 0.95×1000（mA）−１（Ｈ）×50（mA）−0.2（Ｈ）×700（mA）×1.05＝753 と電池残存容量を判定する。(2) During discharge standby 1H (standby current =
50mA) and 0.2H talk (talk current = 700mA). If the data from load / discharge sensor unit 12 and timer unit 18 and load coefficient γ = 1.05 are added, 1000 (mAH)-1 (H) x 50 The remaining battery capacity is determined as (mA) −0.2 (H) × 700 (mA) × 1.05 = 803 and stored in the RAM unit 21. At this time, if the temperature is as low as 0 ° C., for example, a discharge temperature correction coefficient δ = 0.95 is added, and 0.95 × 1000 (mA) −1 (H) × 50 (mA) −0.2 (H) × 700 (mA) ) × 1.05 = 753 and determine the remaining battery capacity.
（３）自己放電時 フル充電された電池を10日間放置すると、予めROM部1
9に設定された自己放電電流Is＝0.2mAと回路電流1mAを
加算した放電電流1.2mAとすると、充放電センサ部12と
タイマ部18からのデータにより、 1000（mA）−1.2×24（Ｈ）×10（day）＝712 と電池残存容量が判断され、RAM部21に記憶する。(3) Self-discharge If a fully charged battery is left for 10 days, the ROM
Assuming that the self-discharge current Is set to 9 is 0.2 mA and the discharge current is 1.2 mA obtained by adding the circuit current of 1 mA, 1000 (mA) −1.2 × 24 (H) ) × 10 (day) = 712 and the remaining battery capacity is determined and stored in the RAM unit 21.
この時に周囲温度が例えば＋40℃と高いと、自己放電
電流ISは1mAとなり、放電電流は回路電流1mAを加算して
2mAとなり、 1000（mAH）−２×24（Ｈ）×10（day）＝520 と電池残量が判断される。If the ambient temperature at this time for example + 40 ℃ and high self-discharge current I S is 1mA, and the discharge current by adding the circuit current 1mA
It becomes 2mA, and the remaining battery level is determined as 1000 (mAH)-2 x 24 (H) x 10 (day) = 520.
（４）バッテリアラームとフル充電情報 少しでも誤差を少なくするため、比較回路13にて終止
電圧以下となった場合は、リセットしてRAM部21の電池
残存容量を０にクリアするとともに、フル充電情報を充
電器３から入手した際には、温度条件等を加算してRAM
部21の電池残存容量をフル状態にセットする。(4) Battery alarm and full charge information In order to reduce the error as much as possible, when the voltage drops below the cutoff voltage in the comparison circuit 13, the battery is reset to clear the remaining battery capacity of the RAM section 21 to zero and the battery is fully charged. When the information is obtained from the charger 3, the temperature condition is added and the RAM is added.
The battery remaining capacity of the unit 21 is set to a full state.
（５）メモリ効果アラーム 終止電圧になると、リセットした時のRAM部21の電池
残存容量の値が、例えば100以上である場合にはメモリ
効果と判断し、電話機本体１にアラームを送出する。(5) Memory effect alarm When the end voltage is reached, if the value of the remaining battery capacity of the RAM unit 21 at the time of reset is, for example, 100 or more, it is determined that the memory effect has occurred, and an alarm is sent to the telephone body 1.
以上のように、RAM部21に記憶された正確な電池残存
容量及びアラーム情報は、電池パック２において記憶さ
れ、かつこれを電話機本体１において表示することがで
きるため、使用者は電池パックを使用する時はいつでも
正確な情報を得ることができ、電話機の使用における電
源切れ等の不具合を未然に回避することが可能になる。As described above, the accurate remaining battery capacity and the alarm information stored in the RAM unit 21 are stored in the battery pack 2 and can be displayed on the telephone body 1, so that the user uses the battery pack. In this case, accurate information can be obtained at any time, and troubles such as power-off during use of the telephone can be avoided.
以上説明したように本発明は、充放電時の電流や電池
電圧、周囲温度、タイマ部で検出される充電時間、放電
時間及び自己放電時間等により電池の残存容量を正確に
算出してこれを表示するので、使用者はいつでも正確な
電池残存容量を知ることができる。また、同時にアラー
ム情報を表示するので、使用者にとって非常に便利にな
る。更に、電池パックの電池以外の要素をワンチップLS
I化することが可能であり、回路構成を小型にでき、従
来と同じ大きさの電池パックに対しても適用することが
可能になる。As described above, the present invention accurately calculates the remaining capacity of the battery based on the current and the battery voltage during charging and discharging, the ambient temperature, the charging time, the discharging time, the self-discharging time, and the like detected by the timer unit. The display allows the user to know the accurate remaining battery capacity at any time. Also, since the alarm information is displayed at the same time, it becomes very convenient for the user. In addition, the elements of the battery pack other than the batteries are
It is possible to reduce the size of the circuit configuration, and the invention can be applied to a battery pack having the same size as that of the conventional battery pack.
第１図は本発明の電源装置を備えた携帯無線電話機のブ
ロック構成図、第２図は充放電センサ部の一例の回路図
である。 １……電話機本体、２……電池パック、３……充電器、
４……アンテナ、５……無線送受信器、６……ロジック
部、７……キーボード部、８……電源回路部、 9,10……端子、11……電池、12……充放電センサ部、13
……比較回路、14……抵抗、 15,16……A/Dコンバータ、17……温度センサ部、18……
タイマ部、19……ROM部、20……CPU部、21……RAM部、2
2……I/O部、23……コネクタ、24……端子、25,26……
端子、27……安定化電源部、28,29……端子、30……充
電部、31,32,33,34,35……端子。FIG. 1 is a block diagram of a portable radio telephone equipped with a power supply device of the present invention, and FIG. 2 is a circuit diagram of an example of a charge / discharge sensor unit. 1 ... phone body, 2 ... battery pack, 3 ... charger,
4 ... antenna, 5 ... wireless transceiver, 6 ... logic part, 7 ... keyboard part, 8 ... power supply circuit part, 9,10 ... terminal, 11 ... battery, 12 ... charge / discharge sensor part ,13
…… Comparison circuit, 14… Resistance, 15,16 …… A / D converter, 17 …… Temperature sensor part, 18 ……
Timer section, 19 ROM section, 20 CPU section, 21 RAM section, 2
2… I / O part, 23 …… Connector, 24 …… Terminal, 25,26 ……
Terminal, 27: stabilized power supply, 28, 29 ... terminal, 30: charging part, 31, 32, 33, 34, 35 ... terminal.
Claims (1)
充電可能な電池を備えた電池パックとして構成され、こ
の電池パックには、前記電池の充電又は放電の状態及び
その電流を検出する充放電センサ部と、前記電池電圧を
基準電圧と比較する比較回路と、前記電池における充電
時間，放電時間，及び自己放電時間を検出するタイマ部
と、周囲温度を検出する温度センサ部と、各種演算のア
ルゴリズムや充電容量、放電容量及び自己放電容量を計
算する時の周囲温度による補正係数及びサイクル寿命に
よる補正係数からなるソフトを記憶するROM部と、この
ソフトに従って前記充放電センサ部及び温度センサ部の
検出値、前記比較回路の比較結果、並びに前記タイマ部
での検出時間に基づいて前記電池の充電容量，放電容
量，自己放電容量を演算し、かつ前記補正係数等による
補正演算を行なって電池の残存容量を算出するCPU部
と、このCPU部で演算された値及び算出された値を一時
記憶するRAM部と、前記電池を充電する充電器から前記
演算に利用されるフル充電情報を入力し、かつ少なくと
もRAM部に記憶された電池の残存容量及びこれに基づい
て得られるアラーム情報を前記電子機器の本体に出力す
るI/O部とを備えたことを特徴とする電池駆動電子機器
の電源装置。1. A battery pack comprising a chargeable battery for supplying power to a main body of a battery-driven electronic device, wherein the battery pack has a charge or discharge state of the battery and a charge for detecting a current of the battery. A discharge sensor unit, a comparison circuit for comparing the battery voltage with a reference voltage, a timer unit for detecting a charge time, a discharge time, and a self-discharge time of the battery, a temperature sensor unit for detecting an ambient temperature, A ROM unit for storing software consisting of a correction coefficient based on an ambient temperature and a correction coefficient based on a cycle life when calculating an algorithm and a charge capacity, a discharge capacity and a self-discharge capacity, and the charge / discharge sensor unit and the temperature sensor unit according to the software. The charge capacity, the discharge capacity, and the self-discharge capacity of the battery are calculated based on the detection value of the battery, the comparison result of the comparison circuit, and the detection time of the timer section. A CPU that calculates the remaining capacity of the battery by performing a correction operation based on the correction coefficient and the like, a RAM that temporarily stores the value calculated by the CPU and the calculated value, and charges the battery. I / O unit that inputs full charge information used for the calculation from the charger, and outputs at least the remaining capacity of the battery stored in the RAM unit and alarm information obtained based on this to the main body of the electronic device. And a power supply device for a battery-driven electronic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1009220A JP2800220B2 (en) | 1989-01-18 | 1989-01-18 | Power supply for battery-powered electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1009220A JP2800220B2 (en) | 1989-01-18 | 1989-01-18 | Power supply for battery-powered electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02193533A JPH02193533A (en) | 1990-07-31 |
| JP2800220B2 true JP2800220B2 (en) | 1998-09-21 |
Family
ID=11714350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1009220A Expired - Fee Related JP2800220B2 (en) | 1989-01-18 | 1989-01-18 | Power supply for battery-powered electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2800220B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160065967A (en) * | 2013-11-11 | 2016-06-09 | 도요타지도샤가부시키가이샤 | Manufacturing method for non-aqueous secondary battery |
| US9960452B2 (en) | 2013-11-11 | 2018-05-01 | Toyota Jidosha Kabushiki Kaisha | Method of producing nonaqueous secondary battery |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07120536B2 (en) * | 1989-03-31 | 1995-12-20 | 三菱電機株式会社 | Battery level recognition device |
| JPH088466Y2 (en) * | 1989-08-23 | 1996-03-06 | 株式会社東芝 | Battery pack |
| JP2510197Y2 (en) * | 1990-08-15 | 1996-09-11 | 株式会社ニコン | Camera that can be loaded with a battery pack |
| JPH0469784U (en) * | 1990-10-24 | 1992-06-19 | ||
| JPH04204277A (en) * | 1990-11-30 | 1992-07-24 | Nec Corp | Battery pack type device |
| US5345392A (en) * | 1991-01-25 | 1994-09-06 | International Business Machines Corporation | Battery charge monitor for a personal computer |
| JPH06124731A (en) * | 1992-08-31 | 1994-05-06 | Toshiba Corp | Attachment for external battery connection, battery pack and battery discrimination and control method |
| US5694021A (en) * | 1994-02-28 | 1997-12-02 | Kabushiki Kaisha Toshiba | System for executing charge control of a secondary battery and detecting the capacitance thereof |
| JP3416854B2 (en) * | 1994-04-14 | 2003-06-16 | 松下電工株式会社 | Rechargeable electrical equipment |
| JP3397187B2 (en) | 1999-11-09 | 2003-04-14 | トヨタ自動車株式会社 | Battery state of charge determination device |
| JP4137496B2 (en) * | 2002-04-15 | 2008-08-20 | 富士通株式会社 | Remaining amount prediction method |
| CN106597305B (en) * | 2016-12-09 | 2019-01-22 | 合肥国轩高科动力能源有限公司 | A kind of Cycle life prediction method of lithium ion battery |
| CN107889314B (en) * | 2017-12-07 | 2023-09-29 | 贵派电器股份有限公司 | Touch dimming LED power supply with memory function and design method thereof |
| EP3531496A1 (en) * | 2018-02-21 | 2019-08-28 | Siemens Aktiengesellschaft | Sensor device and method for its operation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4289836A (en) | 1980-03-05 | 1981-09-15 | Lemelson Jerome H | Rechargeable electric battery system |
| US4553081A (en) | 1982-06-07 | 1985-11-12 | Norand Corporation | Portable battery powered system |
-
1989
- 1989-01-18 JP JP1009220A patent/JP2800220B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4289836A (en) | 1980-03-05 | 1981-09-15 | Lemelson Jerome H | Rechargeable electric battery system |
| US4553081A (en) | 1982-06-07 | 1985-11-12 | Norand Corporation | Portable battery powered system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160065967A (en) * | 2013-11-11 | 2016-06-09 | 도요타지도샤가부시키가이샤 | Manufacturing method for non-aqueous secondary battery |
| US9960452B2 (en) | 2013-11-11 | 2018-05-01 | Toyota Jidosha Kabushiki Kaisha | Method of producing nonaqueous secondary battery |
| US9966638B2 (en) | 2013-11-11 | 2018-05-08 | Toyota Jidosha Kabushiki Kaisha | Manufacturing method for non-aqueous secondary battery |
| KR101873129B1 (en) * | 2013-11-11 | 2018-06-29 | 도요타지도샤가부시키가이샤 | Manufacturing method for non-aqueous secondary battery |
| KR101873659B1 (en) * | 2013-11-11 | 2018-07-02 | 도요타지도샤가부시키가이샤 | Method of producing nonaqueous secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02193533A (en) | 1990-07-31 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |