JPH10164765A - Battery driver, and battery managing device, and controller for external apparatus - Google Patents
Battery driver, and battery managing device, and controller for external apparatusInfo
- Publication number
- JPH10164765A JPH10164765A JP8327999A JP32799996A JPH10164765A JP H10164765 A JPH10164765 A JP H10164765A JP 8327999 A JP8327999 A JP 8327999A JP 32799996 A JP32799996 A JP 32799996A JP H10164765 A JPH10164765 A JP H10164765A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- discharge
- signal
- external device
- cpu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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
- Secondary Cells (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、充放電状態を監視
する電池管理装置付きの電池を電源として、外部機器を
駆動する電池駆動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 driving device for driving an external device using a battery provided with a battery management device for monitoring a charge / discharge state as a power supply.
【０００２】[0002]
【従来の技術】ニッケル・カドミウム電池（Ｎｉ−Ｃｄ
電池）などの充電可能な電池（二次電池）では、電池の
タイプ、放電状態、周囲温度、充放電回数、等の種々の
条件によって最適な充電方法を選択する必要がある。ま
た放電量を監視して残存容量がどの位あるかをできるだ
け正確に求め、使用者に知らせることが必要である。2. Description of the Related Art Nickel-cadmium batteries (Ni-Cd
For a rechargeable battery (secondary battery) such as a battery, it is necessary to select an optimal charging method depending on various conditions such as the type of battery, discharge state, ambient temperature, number of times of charge and discharge, and the like. In addition, it is necessary to monitor the amount of discharge, determine the remaining capacity as accurately as possible, and notify the user.
【０００３】このような電池の充放電の管理を行うＣＰ
Ｕ（マイクロプロセッサ）を電池に設け、電池を最適な
使用条件で使用できるようにする電池管理装置が提案さ
れている（例えば特開平６ー８１４２５号）。[0003] A CP for managing the charging and discharging of such a battery.
A battery management device has been proposed in which a U (microprocessor) is provided in a battery so that the battery can be used under optimum use conditions (for example, Japanese Patent Application Laid-Open No. Hei 6-81425).
【０００４】従来はこの電池管理装置付きの電池は、外
部機器に接続されて使用される際に電池の放電終了を外
部機器のコントローラ側で判別していた。例えば電池の
出力電圧が規定値以下になると放電を停止させていた。Conventionally, when a battery with a battery management device is used by being connected to an external device, the controller of the external device determines whether the battery has been discharged. For example, when the output voltage of the battery falls below a specified value, the discharge is stopped.
【０００５】[0005]
【従来技術の問題点】この場合には電池の状態を外部機
器側では正確に判別できないため、他の電池条件を放電
禁止の判断データとして用いることができない。例えば
電池の残存容量や放電最低電圧は電池の使用履歴などに
より異なり、また電池温度も充電方法や周囲温度などに
より異なるが、従来のものでは電池を交換するとこの使
用履歴なども不明になると共に電池温度などは検出でき
ないから、このような各電池ごとに異なる固有のデータ
は使用できないという問題があった。In this case, since the state of the battery cannot be accurately determined on the external device side, other battery conditions cannot be used as the data for judging discharge prohibition. For example, the remaining capacity of the battery and the minimum discharge voltage vary depending on the usage history of the battery, and the battery temperature also varies depending on the charging method and the ambient temperature. Since the temperature and the like cannot be detected, there is a problem that such unique data different for each battery cannot be used.
【０００６】このため放電を禁止する時期を正確に判別
できないという問題があった。従って電池を過放電させ
て電池を傷めその寿命を短くする、という問題もあっ
た。For this reason, there has been a problem that it is not possible to accurately determine when to prohibit discharge. Therefore, there is also a problem that the battery is over-discharged to damage the battery and shorten its life.
【０００７】[0007]
【発明の目的】本発明はこのような事情に鑑みなされた
ものであり、電池ごとに固有な条件を考慮して放電禁止
時期を正確に判別し、電池を過放電などから保護し電池
の寿命を長くすることができる電動駆動装置を提供する
ことを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the foregoing circumstances, and accurately determines a discharge prohibition time in consideration of conditions unique to each battery, protects the battery from overdischarge and the like, and provides a battery life. It is an object of the present invention to provide an electric drive device capable of increasing the length of the electric drive.
【０００８】またこの電池駆動装置に用いる電池管理装
置および外部機器のコントローラを提供することを他の
目的とする。Another object of the present invention is to provide a battery management device and a controller for an external device used in the battery driving device.
【０００９】[0009]
【発明の構成】本発明によればこの目的は、充放電状態
を監視する電池管理装置付き電池を電源として、外部機
器を駆動する電池駆動装置において、前記電池管理装置
は、電池の放電禁止状態を判別して放電禁止信号を出力
する放電禁止判別手段と、前記放電禁止信号を前記外部
機器のコントローラに出力する信号送出手段とを備え、
前記外部機器のコントローラは、前記放電禁止信号を受
信する復調回路と、この復調回路が放電禁止信号を受信
したことから前記外部機器の作動を禁止する外部機器用
ＣＰＵとを備えることを特徴とする電池駆動装置により
達成される。According to the present invention, it is an object of the present invention to provide a battery driving device for driving an external device by using a battery with a battery management device for monitoring a charging / discharging state as a power source. Discharge prohibition determining means for determining and outputting a discharge prohibition signal, and signal sending means for outputting the discharge prohibition signal to a controller of the external device,
The controller of the external device includes a demodulation circuit that receives the discharge inhibition signal, and an external device CPU that inhibits operation of the external device because the demodulation circuit receives the discharge inhibition signal. This is achieved by a battery drive.
【００１０】ここに放電禁止信号は電池出力を外部機器
に供給するパワーラインに乗せて送るのが望ましい。放
電禁止判別手段は、電池の電池残存容量や電池電圧や電
池温度が規定範囲外であることを検出して放電禁止信号
を出力するように構成することができる。これらに加え
て充電時にも放電禁止信号を出力するのがよい。[0010] Here, it is desirable that the discharge prohibition signal be sent on a power line for supplying the battery output to an external device. The discharge prohibition determining means may be configured to detect that the remaining battery capacity, the battery voltage, and the battery temperature of the battery are outside the specified ranges, and output a discharge prohibition signal. In addition, it is preferable to output a discharge prohibition signal also during charging.
【００１１】またこの電池駆動装置に用いる電池管理装
置では、電池の放電禁止状態を判別する電池用ＣＰＵ
と、前記電池用ＣＰＵが放電禁止状態を判別すると外部
機器の制御部へ放電禁止信号を送出する信号送出手段と
を備えることを特徴とする電池管理装置により得られ
る。In the battery management device used in the battery driving device, a battery CPU for determining whether the battery is in a discharge-prohibited state is provided.
And a signal transmitting means for transmitting a discharge prohibition signal to the control unit of the external device when the battery CPU determines the discharge prohibition state.
【００１２】さらにこの電池駆動装置に用いる外部機器
のコントローラは、電池管理装置から送出される放電禁
止信号を受信する復調回路と、この復調回路が放電禁止
信号を受信したことから前記外部機器の作動を禁止する
外部機器用ＣＰＵとを備えることにより得られる。Further, a controller of an external device used in the battery driving device includes a demodulation circuit for receiving a discharge inhibition signal sent from the battery management device, and an operation of the external device when the demodulation circuit receives the discharge inhibition signal. And a CPU for an external device that prohibits the operation.
【００１３】[0013]
【実施態様】図１は本発明の一実施態様の全体概略図、
図２は主としてＣＰＵの機能を示すブロック図である。FIG. 1 is an overall schematic view of an embodiment of the present invention.
FIG. 2 is a block diagram mainly showing the functions of the CPU.
【００１４】図１、２において符号１０はモータ、１２
はコントローラ、１４は電池管理装置、１６は充電器で
ある。電池管理装置１４には電池１８が含まれる。交流
電源２０から供給される交流は、充電器１６で整流さ
れ、ダイオード２２を介して所定の充電モードで電池１
８を充電する。1 and 2, reference numeral 10 denotes a motor, 12
Is a controller, 14 is a battery management device, and 16 is a charger. The battery management device 14 includes a battery 18. The alternating current supplied from the alternating current power supply 20 is rectified by the charger 16 and passes through the diode 22 in a predetermined charging mode.
Charge 8.
【００１５】コントローラ１２はこの電池１８を電源と
してモータ１０に所定の電流・電圧を供給し、モータ１
０を駆動する。例えばモータ１０を直流モータとした場
合は、コントローラ１２は電池１８の出力電圧を所定の
デューティでオン・オフ制御するチョッパー方式のもの
とすることができる。The controller 12 supplies a predetermined current and voltage to the motor 10 using the battery 18 as a power source, and
Drive 0. For example, when the motor 10 is a DC motor, the controller 12 may be of a chopper type that controls on / off of the output voltage of the battery 18 at a predetermined duty.
【００１６】ここにコントローラ１２は、図１に示すよ
うに復調回路２４と、外部機器用ＣＰＵ２６と、半導体
ブリッジ回路２８とを持つ。復調回路２４は後記するよ
うに電池管理装置１４からパワーライン３０に乗せて送
られる放電禁止信号ａを復調する。ＣＰＵ２６はこの復
調された放電禁止信号Ａにより電池１８の状況を判断
し、また外部信号Ｂに基づいてブリッジ回路２８を制御
する。The controller 12 has a demodulation circuit 24, an external device CPU 26, and a semiconductor bridge circuit 28, as shown in FIG. The demodulation circuit 24 demodulates the discharge inhibition signal a sent from the battery management device 14 on the power line 30 as described later. The CPU 26 determines the state of the battery 18 based on the demodulated discharge inhibition signal A, and controls the bridge circuit 28 based on the external signal B.
【００１７】すなわちこのＣＰＵ２６は、通常の運転時
には外部信号Ｂに基づきブリッジ回路２８のデューティ
を連続的に変化させてモータ１０の駆動電圧・電流を制
御する。また復調された放電禁止信号Ａに基づいて、放
電禁止すべき状況であれば、ＣＰＵ２６はブリッジ回路
２８のデューティを０にする。すなわちモータ１０への
電圧・電流の供給を停止し、その旨を表示装置３２に表
示する。That is, the CPU 26 controls the drive voltage and current of the motor 10 by continuously changing the duty of the bridge circuit 28 based on the external signal B during normal operation. If the discharge is to be prohibited based on the demodulated discharge prohibition signal A, the CPU 26 sets the duty of the bridge circuit 28 to 0. That is, the supply of the voltage and current to the motor 10 is stopped, and the fact is displayed on the display device 32.
【００１８】３４は電池用ＣＰＵ（マイクロプロセッサ
ー）である。その機能については後記する。３６は電源
回路であり（図２）、電池１８の電圧（例えば２４Ｖ）
を所定電圧（例えば５Ｖ）に降圧する。Reference numeral 34 denotes a battery CPU (microprocessor). Its function will be described later. Reference numeral 36 denotes a power supply circuit (FIG. 2), and the voltage of the battery 18 (for example, 24 V)
To a predetermined voltage (for example, 5 V).
【００１９】３８は信号送出手段としての外部通信回路
（通信インターフェース）、４０は電流検出手段、４２
は電圧検出手段である。外部通信回路３８はコントロー
ラ１２や充電器１６や他の外部機器との間でデータの入
出力を行う。例えばこの外部通信回路３８は、ＣＰＵ３
４が電池１８の状態を判別した結果を示す信号をパワー
ライン３０に乗せてコントローラ１２に出力する。Reference numeral 38 denotes an external communication circuit (communication interface) as signal transmission means, 40 denotes current detection means, 42
Denotes voltage detecting means. The external communication circuit 38 inputs and outputs data to and from the controller 12, the charger 16, and other external devices. For example, the external communication circuit 38
4 outputs a signal indicating the result of determining the state of the battery 18 to the controller 12 via the power line 30.
【００２０】電流検出部４０は、電池１８の充放電電流
Ｉを検出しＣＰＵに入力可能な電圧に変換してＣＰＵ３
４に入力するものである。電圧検出部４０は電池１８の
正極電圧Ｖを電圧変換してＣＰＵ３４に入力する。この
電圧検出部４０は放電中もこの電圧Ｖを監視している。The current detector 40 detects the charge / discharge current I of the battery 18 and converts it into a voltage that can be input to the CPU.
4 is input. The voltage detector 40 converts the voltage of the positive electrode voltage V of the battery 18 and inputs the converted voltage to the CPU 34. The voltage detector 40 monitors the voltage V even during discharging.
【００２１】４４は電池１８に設けたサーミスタからな
る電池温度検出部であり、具体的には電池温度θによっ
て変化するこのサーミスタ４４の電流変化を増幅しかつ
電圧に変換してＣＰＵ３４に入力する。Reference numeral 44 denotes a battery temperature detecting section comprising a thermistor provided on the battery 18. More specifically, a current change of the thermistor 44, which changes according to the battery temperature θ, is amplified and converted into a voltage and input to the CPU 34.
【００２２】図２で４６はＥＥＰＲＯＭ(Electrically
Erasable / Programable Read Only Memory)である。Ｅ
ＥＰＲＯＭ４６はＣＰＵ３４で演算に使う種々のデー
タ、例えば電池１８のタイプやその特性データ、電池温
度θによる容量低下特性などをメモリすると共に、演算
途中のデータや演算結果である残存容量などをメモリす
る。In FIG. 2, reference numeral 46 denotes an EEPROM (Electrically
Erasable / Programmable Read Only Memory). E
The EPROM 46 stores various data used in the calculation by the CPU 34, for example, the type of the battery 18 and its characteristic data, a capacity reduction characteristic due to the battery temperature θ, and also stores data during the calculation and a remaining capacity as a calculation result.
【００２３】次にＣＰＵ３４の機能を説明する。ＣＰＵ
３４はコントローラ１２あるいは充電器１６から起動指
令が来ると、初期化処理を行う。なおＣＰＵ３４はソフ
トウェアにより作動するが、図２ではその機能をブロッ
ク化して示した。Next, the function of the CPU 34 will be described. CPU
When an activation command comes from the controller 12 or the charger 16, the initialization is performed. Although the CPU 34 operates by software, its function is shown in a block diagram in FIG.
【００２４】ＣＰＵ３４はまず充電器１６による充電中
か否かを充電判別部５０で判別する。この判別は、ダイ
オード２２と充電器１６との間のパワーライン３０Ａの
電圧ＶcをＣＰＵに適した電圧に変換してＣＰＵ３４に
入力し、この電圧Ｖcが正の所定電圧以上なら充電中と
判断する。The CPU 34 first determines whether or not charging is being performed by the charger 16 using the charging determination unit 50. This determination is to convert the voltage V c of the power lines 30A between the diode 22 and the charger 16 to a voltage suitable for CPU and input to CPU 34, and during charging if the voltage V c is a positive predetermined voltage or more to decide.
【００２５】５２は放電禁止判別手段であり、充電判別
部５０が充電中と判別した時や、放電中の電池電圧Ｖが
所定値以下に下がった時に、放電禁止信号ａを出力す
る。この放電禁止信号ａは外部通信回路３８（通信Ｉ／
Ｆ）を介してパワーライン３０に出力される。また充電
中にはＣＰＵ３４は充電量を残存容量演算部５４（図
２）で演算する。すなわち電池電流検出部４０により検
出した電流Ｉと充電時間との積（アンペア時）によって
充電量を求める。Reference numeral 52 denotes discharge prohibition determining means, which outputs a discharge prohibition signal a when the charging determination section 50 determines that charging is being performed or when the battery voltage V during discharging drops below a predetermined value. This discharge prohibition signal a is output from the external communication circuit 38 (communication I /
The signal is output to the power line 30 via F). During charging, the CPU 34 calculates the amount of charge by the remaining capacity calculating unit 54 (FIG. 2). That is, the charge amount is determined by the product (ampere hour) of the current I detected by the battery current detection unit 40 and the charging time.
【００２６】一方ＣＰＵ３４は電力積算部５６で充電中
の電圧と電流との積から電力を求め、電力の大小によっ
て充電量を補正する。この補正は、充電電流の大小や充
電方式によって充電効率が変化することを考慮して行う
ものであり、残存容量補正部５８で行う。この結果はＥ
ＥＰＲＯＭ４６にメモリされ、必要に応じて通信インタ
ーフェース３８、を介してコントローラ１２に送られ、
表示装置３２に表示される。On the other hand, the CPU 34 obtains electric power from the product of the voltage and the current during charging in the electric power integrating section 56, and corrects the charged amount according to the magnitude of the electric power. This correction is performed in consideration of the fact that the charging efficiency changes depending on the magnitude of the charging current and the charging method, and is performed by the remaining capacity correction unit 58. The result is E
The data is stored in the EPROM 46 and sent to the controller 12 via the communication interface 38 as necessary.
It is displayed on the display device 32.
【００２７】またＣＰＵ３４は電池電流Ｉの流れ方向か
ら放電中か否かを判別し、放電中と判別されれば、ＣＰ
Ｕ３４は放電量の演算を行う。すなわち電池電流検出部
４０で検出する放電電流に時間を積算して放電量（アン
ペア時）を求める。ＣＰＵ３４はこれをＥＥＰＲＯＭ４
６に記憶している残存容量から減算することにより残存
容量の現在値を求める。The CPU 34 determines whether or not the battery is discharging from the flow direction of the battery current I.
U34 calculates the amount of discharge. That is, the amount of discharge (ampere hours) is obtained by integrating time with the discharge current detected by the battery current detection unit 40. The CPU 34 converts this into the EEPROM4
The current value of the remaining capacity is obtained by subtracting from the remaining capacity stored in 6.
【００２８】なおこの現在値に残存容量補正部５８で電
力変化による補正を加えてもよいのは勿論である。この
補正後の残存容量はＥＥＰＲＯＭ４６にメモリされる。
またこの結果は通信インターフェース３８を介してコン
トローラ１２に送られ、表示装置３２に表示される。It is a matter of course that the remaining capacity correction unit 58 may add a correction based on a change in power to the present value. The corrected remaining capacity is stored in the EEPROM 46.
The result is sent to the controller 12 via the communication interface 38 and displayed on the display device 32.
【００２９】充電も放電も行われない状態すなわち放置
状態が一定時間（例えば３０分間）続いた時は、ＣＰＵ
３４は放置中であると判断し、低消費電力モードに入
る。このモードに入ると前記電流検出部４０、電圧検出
部４２、電池温度検出部（サーミスタ４４）、表示装置
３２などの周辺装置を停止させる。またＣＰＵ３４は低
速のクロックパルスにより駆動される。When a state where neither charging nor discharging is performed, that is, a standing state continues for a predetermined time (for example, 30 minutes), the CPU
34 determines that the vehicle is being left, and enters a low power consumption mode. In this mode, peripheral devices such as the current detection unit 40, the voltage detection unit 42, the battery temperature detection unit (thermistor 44), and the display device 32 are stopped. The CPU 34 is driven by a low-speed clock pulse.
【００３０】この低消費電力モードでは、通信インター
フェース３８は作動中であり、例えばコントローラ１２
から充電あるいは放電指令による外部割り込み指令が来
れば通常動作モードに入り周辺装置を起動させる。In this low power consumption mode, the communication interface 38 is in operation, and
When an external interrupt command from a charging or discharging command comes from the controller, the normal operation mode is entered and peripheral devices are started.
【００３１】外部割り込みが無いまま、所定時間（例え
ば３０分）経過すれば、自己放電量の演算を行うためＣ
ＰＵ３４は通常動作モードに戻る。この時起動する周辺
装置は、電池温度検出部４４と、電池電圧検出部４２
と、ＥＥＰＲＯＭ４６である。この時はＣＰＵ３４は高
速のクロックパルスにより作動する。If a predetermined time (for example, 30 minutes) elapses without an external interrupt, the self-discharge amount is calculated.
PU 34 returns to the normal operation mode. The peripheral devices activated at this time include a battery temperature detecting unit 44 and a battery voltage detecting unit 42.
And the EEPROM 46. At this time, the CPU 34 operates by a high-speed clock pulse.
【００３２】このようにした状態でＣＰＵ３４は自己放
電量の演算を行う。この演算にはＥＥＰＲＯＭ４６にメ
モリした電池温度Ｔに対する残存容量の低下率特性を用
いる。In this state, the CPU 34 calculates the amount of self-discharge. For this calculation, the decrease rate characteristic of the remaining capacity with respect to the battery temperature T stored in the EEPROM 46 is used.
【００３３】ＣＰＵ３４ではサーミスタ４４が出力する
信号に基づいて温度計測部６０で電池温度θを求め、メ
モリした残存容量特性から残存容量低下率を求める。そ
してＥＥＰＲＯＭ４６にメモリされた所定時間前の残存
容量にこの容量低下率を積算することにより、残存容量
の補正を行う。この結果はＥＥＰＲＯＭ４６にメモリさ
れ、再び低消費電力モードに戻る。In the CPU 34, the battery temperature θ is obtained by the temperature measuring section 60 based on the signal output from the thermistor 44, and the remaining capacity reduction rate is obtained from the stored remaining capacity characteristics. Then, the remaining capacity is corrected by integrating this remaining capacity reduction rate with the remaining capacity stored in the EEPROM 46 before the predetermined time. This result is stored in the EEPROM 46 and returns to the low power consumption mode again.
【００３４】ＣＰＵ３４の放電禁止判別手段５２は、電
池温度検出部（サーミスタ４４）が充電中および放電中
に検出した電池温度θが規定範囲を外れると、放電禁止
信号ａをコントローラ１２に送出する。また放電中に電
池電圧Ｖが所定値以下に降下した時や残存容量が設定範
囲を外れた時にも、同様に放電禁止信号ａをコントロー
ラ１２に送出する。コントローラ１２の復調回路２４は
この放電禁止信号ａを受信するとこれを復調して外部機
器用ＣＰＵ２６に送り、放電を停止させる。The discharge prohibition determining means 52 of the CPU 34 sends a discharge prohibition signal a to the controller 12 when the battery temperature θ detected by the battery temperature detector (thermistor 44) during charging and discharging falls outside a specified range. Also, when the battery voltage V falls below a predetermined value during the discharging or when the remaining capacity is out of the set range, the discharging prohibition signal a is similarly sent to the controller 12. Upon receiving the discharge prohibition signal a, the demodulation circuit 24 of the controller 12 demodulates the signal and sends it to the external device CPU 26 to stop the discharge.
【００３５】この実施態様では放電禁止信号ａをパワー
ライン３０に乗せているので、電池管理装置１４とコン
トローラ１２との間の信号線の接続コネクタも少なくな
る。充電器１６と電池管理装置１４との間の信号の送受
信も、同様にパワーライン３０Ａを介して行ってもよ
い。本発明はモータ１０以外の外部機器、例えばヒータ
やランプなどの駆動装置にも適用できるのは勿論であ
る。In this embodiment, since the discharge prohibition signal a is carried on the power line 30, the number of connectors for the signal lines between the battery management device 14 and the controller 12 is reduced. Transmission and reception of signals between the charger 16 and the battery management device 14 may be similarly performed via the power line 30A. The present invention can of course be applied to an external device other than the motor 10, for example, a driving device such as a heater or a lamp.
【００３６】[0036]
【発明の効果】請求項１の発明は以上のように、電池管
理装置が放電可能な状態か否かを判別して放電禁止信号
を出力し、この信号を外部機器のコントローラ側で復調
して外部機器の作動を停止させるものであるから、電池
ごとの履歴や温度などの条件を考慮して適切な時期に放
電を禁止することができる。このため電池を過放電など
により傷めることがなくなり、電池寿命を延長させるこ
とができる。As described above, according to the first aspect of the present invention, it is determined whether or not the battery management device is in a dischargeable state, and a discharge prohibition signal is output. This signal is demodulated by the controller of the external device. Since the operation of the external device is stopped, discharge can be prohibited at an appropriate time in consideration of conditions such as the history and temperature of each battery. For this reason, the battery is not damaged by overdischarge or the like, and the battery life can be extended.
【００３７】ここに放電禁止信号は、電池から外部機器
に電力を供給するパワーラインに乗せて外部機器のコン
トローラに送出するように構成すれば、電池管理装置と
外部機器との間の接続コネクタの端子数も減らすことが
できる（請求項２）。Here, if the discharge prohibition signal is sent to the controller of the external device via a power line for supplying power from the battery to the external device, the signal of the connector between the battery management device and the external device can be obtained. The number of terminals can be reduced (claim 2).
【００３８】放電禁止信号は、電池の残存容量と電池電
圧と電池温度とのいずれかが規定範囲外であることを判
別して出力するようにするのがよい（請求項３）。これ
らの他にさらに電池が充電中か否かを検出して充電中に
は放電禁止信号を出力するようにしてもよい（請求項
４）。It is preferable that the discharge prohibition signal is output when it is determined that one of the remaining capacity of the battery, the battery voltage and the battery temperature is out of the specified range. In addition to the above, it is also possible to detect whether or not the battery is being charged and to output a discharge prohibition signal during charging.
【００３９】また請求項５の発明によれば、この装置の
実施に用いる電池管理装置がえられる。請求項６の発明
によれば、この装置の実施に用いる外部機器のコントロ
ーラが得られる。According to the fifth aspect of the present invention, there is provided a battery management device used for implementing this device. According to the invention of claim 6, a controller for an external device used for implementing this apparatus is obtained.
【図１】本発明の一実施態様の全体概略図FIG. 1 is an overall schematic diagram of an embodiment of the present invention.
【図２】主としてＣＰＵの機能を示すブロック図FIG. 2 is a block diagram mainly showing functions of a CPU;
１０ 外部機器としてのモータ １２ コントローラ １４ 電池管理装置 １６ 充電器 １８ 電池 ２４ 復調回路 ２６ 外部機器用ＣＰＵ ２６ ブリッジ回路 ３０、３０Ａ パワーライン ３２ 表示装置 ３４ 電池側ＣＰＵ ３８ 信号送出手段としての外部通信回路（通信Ｉ／
Ｆ） ４０ 電池電流検出部 ４２ 電池電圧検出部 ４４ 電池温度検出部としてのサーミスタ ４６ メモリ（ＥＥＰＲＯＭ） ５０ 充電判別部 ５２ 放電禁止判別手段 ５８ 残存容量補正部 ６０ 温度計測部Reference Signs List 10 Motor as external device 12 Controller 14 Battery management device 16 Charger 18 Battery 24 Demodulation circuit 26 CPU for external device 26 Bridge circuit 30, 30A Power line 32 Display device 34 Battery side CPU 38 External communication circuit as signal transmission means ( Communication I /
F) 40 Battery current detector 42 Battery voltage detector 44 Thermistor as battery temperature detector 46 Memory (EEPROM) 50 Charge determination unit 52 Discharge prohibition determination means 58 Remaining capacity correction unit 60 Temperature measurement unit
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｈ０２Ｊ 7/04 Ｈ０２Ｊ 7/04 Ａ Ｌ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI H02J 7/04 H02J 7/04 AL
Claims (6)
電池を電源として、外部機器を駆動する電池駆動装置に
おいて、 前記電池管理装置は、電池の放電禁止状態を判別して放
電禁止信号を出力する放電禁止判別手段と、前記放電禁
止信号を前記外部機器のコントローラに出力する信号送
出手段とを備え、 前記外部機器のコントローラは、前記放電禁止信号を受
信する復調回路と、この復調回路が放電禁止信号を受信
したことから前記外部機器の作動を禁止する外部機器用
ＣＰＵとを備える、 ことを特徴とする電池駆動装置。1. A battery driving device for driving an external device by using a battery with a battery management device for monitoring a charge / discharge state as a power supply, wherein the battery management device determines a battery discharge prohibition state and outputs a discharge prohibition signal. And a signal transmission unit that outputs the discharge prohibition signal to a controller of the external device. The controller of the external device includes a demodulation circuit that receives the discharge prohibition signal, and the demodulation circuit discharges the signal. An external device CPU that prohibits the operation of the external device upon receiving a prohibition signal.
に供給するパワーラインを通して前記放電禁止信号を送
出する請求項１の電池駆動装置。2. The battery driving device according to claim 1, wherein the signal transmission unit transmits the discharge inhibition signal through a power line that supplies an output of the battery to an external device.
量と、電池電圧と、電池温度とのいずれかが規定範囲外
であることを判別して放電禁止信号を出力する請求項１
または２の電池駆動装置。3. The discharge prohibition judging means judges that one of the remaining capacity of the battery, the battery voltage, and the battery temperature is out of a specified range, and outputs a discharge prohibition signal.
Or the battery drive device of 2.
充電状態を検出して放電禁止信号を出力する請求項３の
電池駆動装置。4. The battery driving device according to claim 3, wherein said discharge prohibition determining means further detects a charge state of said battery and outputs a discharge prohibition signal.
理装置であって、 電池の放電禁止状態を判別する電池用ＣＰＵと、前記電
池用ＣＰＵが放電禁止状態を判別すると外部機器のコン
トローラへ放電禁止信号を送出する信号送出手段とを備
えることを特徴とする電池管理装置。5. A battery management device for use in the battery driving device according to claim 1, wherein a battery CPU for determining a battery prohibition state and a controller of an external device when the battery CPU determines a discharge prohibition state. A battery management device comprising: signal transmission means for transmitting a discharge prohibition signal.
器のコントローラであって、 電池管理装置から送出される放電禁止信号を受信する復
調回路と、この復調回路が放電禁止信号を受信したこと
から前記外部機器の作動を禁止する外部機器用ＣＰＵと
を備えることを特徴とする外部機器のコントローラ。6. A controller for an external device used in the battery driving device according to claim 1, wherein the demodulation circuit receives a discharge inhibition signal sent from the battery management device, and the demodulation circuit receives the discharge inhibition signal. And a CPU for an external device for inhibiting the operation of the external device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8327999A JPH10164765A (en) | 1996-11-25 | 1996-11-25 | Battery driver, and battery managing device, and controller for external apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8327999A JPH10164765A (en) | 1996-11-25 | 1996-11-25 | Battery driver, and battery managing device, and controller for external apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10164765A true JPH10164765A (en) | 1998-06-19 |
Family
ID=18205382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8327999A Pending JPH10164765A (en) | 1996-11-25 | 1996-11-25 | Battery driver, and battery managing device, and controller for external apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10164765A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007082375A (en) * | 2005-09-16 | 2007-03-29 | Toyota Motor Corp | Power supply device for vehicles |
| CN100458756C (en) * | 2006-04-10 | 2009-02-04 | 重庆大学 | Management system of power battery for mixed-power automobile |
| US7696725B2 (en) | 2003-06-19 | 2010-04-13 | O2Micro International Limited | Battery cell monitoring and balancing circuit |
| JP2011223872A (en) * | 2008-11-18 | 2011-11-04 | Sony Corp | Battery pack and control method |
| CN103972951A (en) * | 2013-01-29 | 2014-08-06 | 三洋电机株式会社 | Electric bicycle, charger and circuit |
| CN103986195A (en) * | 2013-02-07 | 2014-08-13 | 中国科学院金属研究所 | Lead-acid-storage-battery management system |
| US8872478B2 (en) | 2010-03-09 | 2014-10-28 | O2Micro Inc. | Circuit and method for balancing battery cells |
| JP2020528723A (en) * | 2018-01-08 | 2020-09-24 | エルジー・ケム・リミテッド | Energy storage system that can be switched to an uninterruptible power supply |
-
1996
- 1996-11-25 JP JP8327999A patent/JPH10164765A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8836290B2 (en) | 2003-06-19 | 2014-09-16 | O2Micro International Limited | Battery cell monitoring and balancing circuit |
| US7696725B2 (en) | 2003-06-19 | 2010-04-13 | O2Micro International Limited | Battery cell monitoring and balancing circuit |
| US8004246B2 (en) | 2003-06-19 | 2011-08-23 | O2Micro International Limited | Battery cell monitoring and balancing circuit |
| US8237411B2 (en) | 2003-06-19 | 2012-08-07 | O2Micro International Limited | Battery cell monitoring and balancing circuit |
| JP2007082375A (en) * | 2005-09-16 | 2007-03-29 | Toyota Motor Corp | Power supply device for vehicles |
| CN100458756C (en) * | 2006-04-10 | 2009-02-04 | 重庆大学 | Management system of power battery for mixed-power automobile |
| JP2011223872A (en) * | 2008-11-18 | 2011-11-04 | Sony Corp | Battery pack and control method |
| US8872478B2 (en) | 2010-03-09 | 2014-10-28 | O2Micro Inc. | Circuit and method for balancing battery cells |
| CN103972951A (en) * | 2013-01-29 | 2014-08-06 | 三洋电机株式会社 | Electric bicycle, charger and circuit |
| JP2014144699A (en) * | 2013-01-29 | 2014-08-14 | Sanyo Electric Co Ltd | Electric bicycle and charger, circuit |
| CN103986195A (en) * | 2013-02-07 | 2014-08-13 | 中国科学院金属研究所 | Lead-acid-storage-battery management system |
| JP2020528723A (en) * | 2018-01-08 | 2020-09-24 | エルジー・ケム・リミテッド | Energy storage system that can be switched to an uninterruptible power supply |
| US11646600B2 (en) | 2018-01-08 | 2023-05-09 | Lg Energy Solution, Ltd. | Energy storage system convertible to uninterruptible power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5739671A (en) | Device for accurate detection of remaining discharge capacities of a plurality of batteries | |
| KR102345506B1 (en) | Battery pack, control method of charging the same, and vehicle comprisin the same | |
| US8432136B2 (en) | Battery pack, battery charger, and battery pack system | |
| US6683439B2 (en) | DC power source unit with battery charging function | |
| US6850041B2 (en) | Battery pack used as power source for portable device | |
| US20070188141A1 (en) | Method for controlling battery pack | |
| US6114831A (en) | Portable electronic apparatus with a circuit for controlling discharging of a battery, and a method associated with said circuit | |
| JP2003092151A (en) | Battery service life estimation method and device using battery unit | |
| US6294894B1 (en) | Rechargeable battery arrangement | |
| IE61854B1 (en) | Method and apparatus for determining battery type and modifying operating characteristics | |
| US5864224A (en) | Method for charging secondary battery and charger therefor | |
| JPH10164764A (en) | Battery capacity monitoring method | |
| US20050112416A1 (en) | Battery assembly and battery pack | |
| JP2003180004A (en) | Method for calculating parameter of power battery of electric motor vehicle | |
| US20110031975A1 (en) | Battery-Driven Power Tool and Battery Pack Therefor | |
| US7911531B2 (en) | Battery, camera and camera system | |
| JPH10164765A (en) | Battery driver, and battery managing device, and controller for external apparatus | |
| JP2012034425A (en) | Charging/discharging control circuit of secondary battery, battery pack, and battery power supply system | |
| JP5315953B2 (en) | BATTERY STATE DETECTING DEVICE FOR VEHICLE ENGINE START, BATTERY AND VEHICLE EQUIPPED WITH THE DEVICE, AND BATTERY STATE DETECTING METHOD FOR VEHICLE ENGINE STARTING | |
| JPH10210675A (en) | Charge control method and charge controller | |
| JPH10201117A (en) | Charger control method and charge control device | |
| JP3695727B2 (en) | Charging control method and charging device | |
| JP4562214B2 (en) | Detachable battery pack charge control device | |
| JPH11317246A (en) | Battery control device for detachable battery pack | |
| US20200381930A1 (en) | Battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20050201 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20050209 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20050608 |