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JP3672345B2 - Judgment method of charge / discharge battery type and capacity - Google Patents
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JP3672345B2 - Judgment method of charge / discharge battery type and capacity - Google Patents

Judgment method of charge / discharge battery type and capacity Download PDF

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Publication number
JP3672345B2
JP3672345B2 JP29326394A JP29326394A JP3672345B2 JP 3672345 B2 JP3672345 B2 JP 3672345B2 JP 29326394 A JP29326394 A JP 29326394A JP 29326394 A JP29326394 A JP 29326394A JP 3672345 B2 JP3672345 B2 JP 3672345B2
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Prior art keywords
battery
charge
detection terminal
voltage
discharge
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JPH08153544A (en
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幸雄 相沢
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FDK Twicell Co Ltd
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Toshiba Battery Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Description

【0001】
【産業上の利用分野】
この発明は、充・放電型電池種別(機種)・容量を容易に、また確実に判別し得る判定(判別)方法に関する。
【0002】
【従来の技術】
周知のように、充・放電型電池は、たとえば携帯電話機など、各種の電子機器類の電源として実用されている。そして、この種の充・放電型電池は、機種・容量に対応して適正な条件、すなわち適正な充電速度(充電電流)条件での充電が要求される。つまり、この種の充・放電型電池は、携帯電話機などの電子機器類の駆動源として利用され、放電に伴って電池電圧がしきい値以下に低下すると、充電量が限界に到達したことが表示される。ここで、充電量が限界に来ると、充・放電型電池は、駆動源としての機能を十分に果たし得ないし、さらには充・放電型電池の破損を招来する恐れもある。したがって、前記駆動源としての利用においては、充電量放電状態などに適切に対応して、所要の充電を行うことになる。
【0003】
ところで、充・放電型電池は、電池の種類機種・容量、たとえばニッケル水素電池とニッケルカドミウム電池、さらには、この電池の容量の大小によって、充電速度充電条件も異なるので、充・放電型電池の種類機種・容量ごとに、適正な充電速度充電制御での充電が必要となる。こうした要求に対して、充・放電型電池のハウジング内に電子素子を内蔵させる一方、充電速度を制御するための充電回路を使用することが知られている。
【0004】
たとえば図3に回路構成を示すような手段(判別方法・装置)が提案されている(特開平 2−299428号公報)。図3において、1は充・放電型電池駆動機器(充電器)で、外部接続用(入出力)端子2、整流器3、定電流源4、一端が安定化電圧に接続する抵抗(第1の電圧値抵抗)5、充・放電型電池の機種検出器6、および充電制御部7にて構成されている。また、8は充・放電型電池パックで、充・放電型電池9、および前記充・放電型電池9の機種に応じて選択された抵抗値を有する抵抗(第2の抵抗)10にて構成されている。そして、前記充・放電型電池駆動機器(充電器)1と充・放電型電池パック8とは、一次供給端子11、検出入力端子12、アース端子13で接続している。
【0005】
この回路構成によれば、充・放電型電池の機種検出器6は、第1の電圧値抵抗5および第2の抵抗10による安定化電圧の分圧で発生した電気信号(両端の電位)を測定・検出し、充・放電型電池の機種を決定して充電制御部7に伝える。ここで、充電制御部7は、予め設定されている充・放電型電池9の機種に関する情報に基づいて、充・放電型電池9の機種に対応した適正な充電速度・条件を設定する。一方、充・放電型電池の容量を自動的に判別(識別)し得る充電回路も知られている。
図4はこの回路図であって、充・放電型電池駆動機器(充電器)14および充・放電型電池パック15で構成される。ここで、充・放電型電池駆動機器(充電器)14は、外部接続用(入出力)端子16、整流器17、定電流源18に接続する定電流充電用端子 19A、充・放電型電池の機種および容量判定データを内蔵するマイクロプロセッサー20に各別に接続する温度検出端子 21Aと電池容量検出端子 22A、前記マイクロプロセッサー20に定電圧 D Vおよび接地電位GNを与える定電圧電源23、前記接地電位GN用のアース端子 24A、前記マイクロプロセッサー20と温度検出端子 21Aおよび電池容量検出端子 22Aとが各別に接続する回路25,26に抵抗値が一定の抵抗 27A, 27Bを介して前記定電圧を各別に与える定電圧回路28,29、前記定電圧電源23を介してマイクロプロセッサー20に接続して定電流源18を制御する充電制御部30を具備している。また、充・放電型電池パック15は、充・放電型電池31、および温度検出素子(サーミスター)32で構成されている。そして、前記充・放電型電池駆動機器(充電器)14と充・放電型電池パック15とは、対応する一次供給端子 19A, 19B、温度検出端子 21A, 21B、電池容量検出端子22A, 22B、アース端子 24A, 24B同士で接続される。
【0006】
この回路構成によれば、電池容量検出端子 22Bが開のとき電池容量検出端子 22Aの電圧が 0 V、電池容量検出端子 22Bが閉のとき電池容量検出端子 22Aの電圧が定電圧 D Vとなる。つまり、 0, 1の記号として捕らえられるので、電池容量の大小を判定し得る。
【0007】
【発明が解決しようとする課題】
前記充・放電型電池の機種(種別)もしくは容量に対し、対応し得る充電回路(充電器)の構成では、実用上、なお不便な問題がある。
【0008】
先ず、特開平2−299428号公報に開示された手段では、充・放電型電池が内蔵する所定素子(回路)の実効インピーダンスと、充電回路側に設置してある抵抗5とによって、比例した分圧で発生する検出入力信号を充・放電型電池機種検出器6で測定し、この検出入力に基づいて、前記充・放電型電池パック8の機種を判別し、充・放電型電池パック8に対応した適正な充電パラメータを選択・設定して所用の充電を行う方式を採っている。
【0009】
この方式は、充電時において、充・放電型電池9の機種を判別し、適正な充電条件で、所要の充電を行い得るという利点を有するが、充・放電型電池9の容量を判別し得ないので、十分な手段といえない。すなわち、ニッケル水素二次電池やニッケルカドミウム二次電池などの充・放電型電池の機種だけでなく、それらの電池容量も判別・検出し得れば、これら充・放電型電池9の使用・取扱上の安全性などさらなる向上を図り得るからである。そして、前記構成の回路で、充・放電型電池9の機種および容量の判別を行うには、前記充・放電型電池パック8が具備する抵抗体10の抵抗値の選択・設定に、複雑化もしくは高精度化が要求される一方、検出入力端子12との電位差測定に基づく判別用のハードおよびソフトを設定する必要があり、コストアップを必然的に招来する。
【0010】
一方、図4に図示した回路構成の場合は、充・放電型電池31の容量自体の判別が目的であって、充・放電型電池31の機種の判別を行うことはできない。つまり、充・放電型電池31の機種および容量を判定して、充・放電型電池31の機種および容量に対応して適正な充電など行い得ないという問題がある。
【0011】
本発明は上記事情に対処してなされたもので、簡略な回路構成でありながら、充・放電型電池の機種および容量を容易に判別でき、適正な充電を行うことが可能な充・放電型電池の判定方法の提供を目的とする。
【0012】
【課題を解決するための手段】
本発明の充・放電型電池の機種および容量の判定方法は、定電流源に接続する定電流充電用端子、充・放電型電池の機種および容量判定データを内蔵するマイクロプロセッサーに各別に接続する温度検出端子電池容量検出端子、アース(接地)端子、前記マイクロプロセッサーに定電圧および接地電位を与える定電圧電源、前記温度検出端子および電池容量検出端子がマイクロプロセッサーに各別に接続する回路に抵抗値が一定の抵抗を介して定電圧を各別に与える定電圧回路、前記定電圧電源を介してマイクロプロセッサーに接続して定電流源を制御する充電制御部を具備して成る充・放電型電池駆動機器に、充・放電型電池の定電流充電用端子温度検出端子電池容量検出端子および接地端子をそれぞれ対応させて接続し、充・放電型電池の種別容量を判定する方法において、前記充・放電型電池の第1の電圧値検出端子側もしくは第2の電圧値検出端子側のいずれか一方にサーミスターを介挿しておき、第2の電圧値検出端子側もしくは第1の電圧値検出端子側の開もしくは閉による充・放電型電池駆動機器側の第2の電圧値検出端子もしくは第1の電圧値検出端子のいずれか一方による0V電圧又は前記定電圧の検出並びに他方による前記サーミスターで分圧された電圧の検出により、電池容量の大小電池の種別を、それぞれ判定することを特徴とする充・放電型電池の種別容量の判定方法。
【0013】
すなわち、本発明は、上記図4に図示した回路構成における温度検出端子(第1の電圧値検出端子)および電池容量判別端子(第2の電圧値検出端子)を利用することを基本とし、充・放電型電池の機種に応じて、充・放電型電池パックの第1の電圧値検出端子側もしくは第2の電圧値検出端子側のいずれかに温度検出素子(サーミスター)を入れ替えて、対応する充・放電型電池駆動機器側の第1の電圧値検出端子もしくは第2の電圧値検出端子の出力と、出力される端子の位置(充・放電型電池駆動機器側の第1の電 圧値検出端子か第2の電圧値検出端子か)によって充・放電型電池の容量の大小および機種の判別を行うことを骨子としている。
【0014】
【作用】
本発明に係る充・放電型電池の機種および容量の判定方法によれば、充・放電型電池駆動機器(充電器)側においては、温度に応じた電圧、また容量の大小に応じて 0 Vか、定電圧(定電圧電源の出力値)かの2値が、第1の電圧値検出端子および第2の電圧値検出端子でそれぞれ検出し得る。一方、充・放電型電池側では、電池の機種に応じて、第1の電圧値検出端子もしくは第2の電圧値検出端子側に温度検出素子(サーミスター)が入れ替り挿入されており、充電器側の第1の電圧値検出端子および第2の電圧値検出端子に、対応する電池側の第1の電圧値検出端子および第2の電圧値検出端子がそれぞれ接続する。つまり、機種の相違によって、充・放電型電池駆動機器側の定電圧電源側の電位と相俟って、第1の電圧値検出端子−第1の電圧値検出端子間、もしくは第2の電圧値検出端子−第2の電圧値検出端子間のいずれか一方に、 0 Vか定電圧値 D Vが発生する。そして、この状態は、換言すると、発生電圧が 0 Vか定電圧値 D Vか、また、その位置が第1の電圧値検出端子か第2の電圧値検出端子かの情報は、マイクロプロセッサーに A/ D入力される。ここで、予めマイクロプロセッサーが内蔵しているデータと比較され、充・放電型電池の機種および容量が判定されて、この判定に基づいて適正な充電を行い得ることになる。
【0015】
【実施例】
以下、図1および図2を参照して、本発明を実施例により説明する。
【0016】
図1および図2は、本発明に係る充・放電型電池の機種および容量の判定手段の異なる構成例を示す回路図であり、図1はニッケル水素電池パックの場合を、また図2はニッケルカドミウム電池パックの場合をそれぞれ示す。
【0017】
先ず、図1において、14は充・放電型電池駆動機器(充電器)、15′はニッケル水素電池パックである。ここで、充・放電型電池駆動機器(充電器)14は、外部接続用(入出力)端子16、整流器17、定電流源18に接続する定電流充電用端子19A、充・放電型電池の機種および容量判定データを内蔵するマイクロプロセッサー20に各別に接続する温度検出端子 21Aと電池容量検出端子 22A、前記マイクロプロセッサー20に定電圧 D Vおよび接地電位GNを与える定電圧電源23、前記接地電位GN用の接地端子 24A、前記マイクロプロセッサー20と温度検出端子 21Aおよび電池容量検出端子 22Aとが各別に接続する回路25,26に抵抗値が一定の抵抗27A, 27Bを介して前記定電圧を各別に与える定電圧回路28,29、前記定電圧電源23を介してマイクロプロセッサー20に接続して定電流源18を制御する充電制御部30を具備している。そして、前記充・放電型電池駆動機器(充電器)14に対して、充・放電型電池パック15′は、対応する一次供給端子 19A, 19B、温度検出端子 21A, 21B、電池容量検出端子 22A, 22B、アース端子 24A, 24B同士で接続される。また、前記充・放電型電池パック15′は、充・放電型電池31、および温度検出端子 21B側を温度検出素子(サーミスター)32を介してアース端子 24B側に接続し、電池容量検出端子 22B側は電池31の容量(大小)に応じて、電池容量検出端子 22Bとアース端子 24B側とを開閉する接続構成を採っている。 次に、前記回路構成の場合の作用について説明する。たとえば充・放電型電池31が大容量のとき、電池容量検出端子 22Bとアース端子 24B側とを閉(ショート)に、また、充・放電型電池31が小容量のとき電池容量検出端子 22Bとアース端子 24B側とを開(オープン)に設定する。この状態では、電池が大容量であると、充・放電型電池駆動機器(充電器)14側の電池容量検出端子 22Aに 0 Vが検出され、電池が小容量であると充・放電型電池駆動機器(充電器)14側の電池容量検出端子 22Aに定電圧 D Vが検出される。そして、この電池容量検出端子 22Aでの検出値 0 V,もしくは定電圧 D Vは、マイクロプロセッサー20に A/ D入力して、予めマイクロプロセッサー20に内蔵されている判定データと対比され、電池容量の大小が判定される。
【0018】
一方、温度検出端子 21A, 21B間においては、充・放電型電池パック15′の温度検出端子 21B側が温度検出素子(サーミスター)32を介してアース端子 24B側に接続しているため、充・放電型電池駆動機器(充電器)14側の温度検出端子 21Aに、 0 Vもしくは定電圧 D Vが検出されない。つまり、ニッケル水素系の充・放電型電池の場合は、充・放電型電池駆動機器(充電器)14側の電池容量検出端子 22Aにのみに、 0 Vもしくは定電圧 D Vが検出されるので、この検出値によって電池容量の大小が判定されるとともに、検出値が電池容量検出端子 22Aで得られることによって、充・放電型電池の機種はニッケル水素系であることが判定される。
【0019】
図2はニッケルカドミウム電池パックの場合である。ここでは、充・放電型電池パック15″の構成を下記のようにした他は、前記図1に図示した場合と同様なので、説明の一部を省略する。すなわち、充・放電型電池パック15″は、ニッケルカドミウム系の充・放電型電池31、および電池容量検出端子 22B側を温度検出素子(サーミスター)32を介してアース端子 24B側に接続し、温度検出端子 21B側は、電池の容量(大小)に応じて、温度検出端子 21Bとアース端子 24B側とを開閉する接続構成を採っている。
【0020】
そして、この回路構成の場合においては、たとえば充・放電型電池31が大容量のとき温度検出端子 21Bとアース端子 24B側とを閉(ショート)に、また、充・放電型電池31が小容量のとき温度検出端子 21Bとアース端子 24B側とを開(オープン)に設定する。この状態では、電池が大容量であると、充・放電型電池駆動機器(充電器)14側の温度検出端子 21Aに 0 Vが検出され、電池が小容量であると充・放電型電池駆動機器(充電器)14側の温度検出端子 21Aに定電圧 D Vが検出される。そして、この電池容量検出端子 21Aでの検出値 0 V,もしくは定電圧D Vは、マイクロプロセッサー20に A/ D入力して、予めマイクロプロセッサー20に内蔵されている判定データと対比され、電池容量の大小が判定される。
【0021】
一方、電池容量検出端子 22A, 22B間においては、充・放電型電池パック15″の電池容量検出端子 22B側が温度検出素子(サーミスター)32を介してアース端子 24B側に接続しているため、充・放電型電池駆動機器(充電器)14側の電池容量検出端子 22Aに、 0 Vもしくは定電圧 D Vが検出されない。つまり、ニッケルカドミウム系の充・放電型電池の場合は、充・放電型電池駆動機器(充電器)14側の温度検出端子 21Aにのみに、 0 Vもしくは定電圧 D Vが検出されるので、この検出値によって電池容量の大小が判定されるとともに、検出値が電池容量検出端子 21Aで得られることによって、充・放電型電池の機種はニッケルカドミウム系であることが判定される。
【0022】
なお、本発明は、上記実施例に限定されるものでなく、発明の趣旨を逸脱しない範囲でいろいろの変形を採ることが可能である。
【0023】
【発明の効果】
以上説明したように、本発明に係る充・放電型電池の種別・容量判定方法によれば、充・放電型電池(充・放電型電池パック)の種別および容量の大小を容易に判定し得るので、充・放電型電池の種別および容量に対応して、適正な条件で所要の定電流充電を行うことが可能となる。したがって、充・放電型電池もしくは充・放電型電池パックの駆動取扱操作などにおける安全性の確保、長寿命化を図ることができ、この種充・放電型電池の汎用性や実用性をさらに助長するうえで多くの利点をもたらす。
【図面の簡単な説明】
【図1】本発明に係る充・放電型電池の種別・容量判定方法の実施態様例を説明するための回路図。
【図2】本発明に係る充・放電型電池の種別・容量判定方法の他の実施態様例を説明するための回路図。
【図3】従来の充・放電型電池の機種判定方法の実施態様を説明するための回路図。
【図4】従来の充・放電型電池の容量判定方法の実施態様を説明するための回路図。
【符号の説明】
1,14……充・放電型電池駆動機器(充電器) 2,16……外部接続用端子 3,17……整流器 4,18……定電流源 5……第1の抵抗
6……機種検出器 7,30……充電制御部 8,15,15′,15″……充・放電型電池パック 9,31……充・放電型電池 10……第2の抵抗充 11……1次供給端子 12……検出端子 13, 24a, 24b……アース端子 19a, 19b……定電流充電用端子 20……マイクロプロセッサー 21a, 21b……温度検出端子 22a, 22b……電池容量検出端子 25,26……回路 27a, 27b……抵抗 28,29……定電圧回路
32……温度検出素子(サーミスター)
[0001]
[Industrial application fields]
The present invention relates to a determination (discrimination) method that can easily and reliably discriminate a charge / discharge battery type (model) and capacity.
[0002]
[Prior art]
As is well known, a charge / discharge type battery is used as a power source for various electronic devices such as a mobile phone. This type of charge / discharge battery is required to be charged under an appropriate condition corresponding to the model and capacity, that is, under an appropriate charge rate (charge current) condition. In other words, this type of charge / discharge battery is used as a drive source for electronic devices such as mobile phones, and when the battery voltage drops below a threshold value due to discharge, the amount of charge has reached its limit. Is displayed. Here, when the amount of charge reaches the limit, the charge / discharge battery cannot sufficiently function as a drive source, and further, the charge / discharge battery may be damaged. Therefore, in the use as the drive source, the required charge is performed appropriately corresponding to the charge amount , the discharge state, and the like.
[0003]
By the way, the charge / discharge type battery is of a charge / discharge type because the battery type , model / capacity, for example, a nickel metal hydride battery and a nickel cadmium battery, and the charge rate and charge conditions differ depending on the capacity of the battery. Charging with appropriate charging speed and charging control is required for each battery type , model, and capacity. In response to such a demand, it is known to use a charging circuit for controlling the charging speed while incorporating an electronic element in the housing of the charge / discharge battery.
[0004]
For example, means (discrimination method / apparatus) having a circuit configuration shown in FIG. 3 has been proposed (Japanese Patent Laid-Open No. 2-299428). In FIG. 3, reference numeral 1 denotes a charge / discharge battery drive device (charger), which is an external connection (input / output) terminal 2, a rectifier 3, a constant current source 4, and a resistor whose first end is connected to a stabilization voltage (first Voltage value resistance) 5, charge / discharge battery type detector 6, and charge control unit 7. Reference numeral 8 denotes a charge / discharge type battery pack comprising a charge / discharge type battery 9 and a resistor (second resistor) 10 having a resistance value selected according to the model of the charge / discharge type battery 9. Has been. The charge / discharge type battery drive device (charger) 1 and the charge / discharge type battery pack 8 are connected by a primary supply terminal 11, a detection input terminal 12, and a ground terminal 13.
[0005]
According to this circuit configuration, the charge / discharge battery type detector 6 receives an electric signal (potential at both ends) generated by dividing the stabilized voltage by the first voltage value resistor 5 and the second resistor 10. Measure and detect, determine the model of the charge / discharge battery, and inform the charge control unit 7 of it. Here, the charging control unit 7 sets appropriate charging speeds and conditions corresponding to the model of the charge / discharge battery 9 based on information about the model of the charge / discharge battery 9 set in advance. On the other hand, a charging circuit that can automatically determine (identify) the capacity of a charge / discharge battery is also known.
FIG. 4 is a circuit diagram of this configuration, which comprises a charge / discharge type battery drive device (charger) 14 and a charge / discharge type battery pack 15. Here, the charge / discharge type battery drive device (charger) 14 includes an external connection (input / output) terminal 16, a rectifier 17, a constant current charge terminal 19A connected to the constant current source 18, and a charge / discharge type battery. Temperature detection terminal 21A and battery capacity detection terminal 22A that are connected separately to the microprocessor 20 containing the model and capacity judgment data, the constant voltage power supply 23 that gives the microprocessor 20 a constant voltage DV and a ground potential GN, and the ground potential GN The ground voltage 24A, the microprocessor 20, the temperature detection terminal 21A and the battery capacity detection terminal 22A are connected to the circuits 25 and 26, respectively. Constant voltage circuits 28 and 29 are provided, and a charge control unit 30 is connected to the microprocessor 20 via the constant voltage power source 23 to control the constant current source 18. The charge / discharge type battery pack 15 includes a charge / discharge type battery 31 and a temperature detection element (thermistor) 32. The charge / discharge type battery drive device (charger) 14 and the charge / discharge type battery pack 15 have corresponding primary supply terminals 19A, 19B, temperature detection terminals 21A, 21B, battery capacity detection terminals 22A, 22B, Connected to ground terminals 24A and 24B.
[0006]
According to this circuit configuration, the voltage of the battery capacity detection terminal 22A is 0 V when the battery capacity detection terminal 22B is open, and the voltage of the battery capacity detection terminal 22A is the constant voltage DV when the battery capacity detection terminal 22B is closed. That is, since it is captured as symbols 0 and 1, it is possible to determine the size of the battery capacity.
[0007]
[Problems to be solved by the invention]
The configuration of the charging circuit (charger) that can cope with the type (type) or capacity of the charge / discharge type battery still has inconveniences in practical use.
[0008]
First, in the means disclosed in Japanese Patent Laid-Open No. 2-299428, the proportional impedance is determined by the effective impedance of a predetermined element (circuit) built in the charge / discharge battery and the resistance 5 installed on the charging circuit side. The detection input signal generated by the pressure is measured by the charge / discharge type battery model detector 6, the type of the charge / discharge type battery pack 8 is determined based on the detection input, and the charge / discharge type battery pack 8 is connected to the charge / discharge type battery pack 8. The appropriate charging parameters are selected and set, and the required charging is performed.
[0009]
This method has the advantage that the type of the charge / discharge battery 9 can be determined at the time of charging and the required charge can be performed under appropriate charging conditions, but the capacity of the charge / discharge battery 9 can be determined. Because there is not, it cannot be said that it is sufficient means. In other words, not only the charge / discharge battery models such as nickel metal hydride secondary battery and nickel cadmium secondary battery, but also their capacity can be identified and detected. and safety of the above, because it may aim to further improve. In order to determine the model and capacity of the rechargeable / dischargeable battery 9 with the circuit having the above configuration, the selection and setting of the resistance value of the resistor 10 included in the rechargeable / dischargeable battery pack 8 is complicated. or while high accuracy is required, it is necessary to set the hard and soft for discrimination based on potentiometric and sense input terminal 12, will inevitably lead to costs.
[0010]
On the other hand, in the case of the circuit configuration shown in FIG. 4, the purpose is to determine the capacity of the charge / discharge battery 31, and the model of the charge / discharge battery 31 cannot be determined. That is, there is a problem that the model and capacity of the charge / discharge battery 31 are determined, and proper charging or the like cannot be performed according to the model and capacity of the charge / discharge battery 31.
[0011]
The present invention has been made in view of the above circumstances, and is a charge / discharge type that can easily determine the model and capacity of a charge / discharge battery and can perform appropriate charging while having a simple circuit configuration. An object is to provide a battery determination method.
[0012]
[Means for Solving the Problems]
The charge / discharge battery model and capacity determination method of the present invention is connected to a constant current charging terminal connected to a constant current source, a charge / discharge battery model and a microprocessor incorporating capacity determination data separately. Resistor for temperature detection terminal , battery capacity detection terminal, ground terminal, constant voltage power supply for supplying constant voltage and ground potential to the microprocessor, circuit for connecting the temperature detection terminal and battery capacity detection terminal to the microprocessor separately A charge / discharge type battery comprising a constant voltage circuit for supplying a constant voltage separately through a resistor having a constant value, and a charge control unit connected to a microprocessor via the constant voltage power source to control a constant current source the drive device, the constant current charging terminal of charging and discharging battery, and connected respectively corresponding temperature detection terminal, the battery capacity detection terminal, and a ground terminal, the charge-discharge Type type battery, The method of determining capacitance in advance by inserting the first thermistor to either of the voltage value detection terminal side or the second voltage value detection terminal side of the charging and discharging battery, the Depending on whether the voltage value detection terminal side of 2 or the first voltage value detection terminal side is opened or closed, either the second voltage value detection terminal or the first voltage value detection terminal on the charge / discharge type battery drive device side The type of charge / discharge type battery characterized by determining the size of the battery capacity and the type of the battery by detecting 0V voltage or the constant voltage and detecting the voltage divided by the thermistor by the other , Capacity determination method.
[0013]
That is, the present invention is based on the use of the temperature detection terminal (first voltage value detection terminal) and the battery capacity determination terminal (second voltage value detection terminal) in the circuit configuration shown in FIG. -Depending on the type of discharge battery, replace the temperature detection element (thermistor) on either the first voltage value detection terminal side or the second voltage value detection terminal side of the charge / discharge battery pack . first voltage charge-discharge type and an output of the first voltage value detection terminal or the second voltage value detection terminal of the battery powered equipment side, the position of the terminal to be output (charging and discharging battery powered equipment side to The main point is to determine the size and model of the charge / discharge battery by the value detection terminal or the second voltage value detection terminal).
[0014]
[Action]
According to the model of the charge / discharge battery and the capacity determination method according to the present invention, on the charge / discharge battery driving device (charger) side, the voltage corresponding to the temperature and 0 V depending on the capacity Or a constant voltage (an output value of a constant voltage power supply) can be detected by the first voltage value detection terminal and the second voltage value detection terminal, respectively. On the other hand, on the charge / discharge type battery side, a temperature detection element (thermistor) is inserted in the first voltage value detection terminal or the second voltage value detection terminal side depending on the battery model. the first voltage value detection terminal and the second voltage value detection terminal side, the first voltage value detection terminal and the second voltage value detection terminals of the corresponding battery side are connected, respectively. In other words, depending on the model, the voltage between the first voltage value detection terminal and the first voltage value detection terminal, or the second voltage , in combination with the potential on the constant voltage power supply side on the charge / discharge battery drive device side. 0 V or a constant voltage value DV is generated at either one of the value detection terminal and the second voltage value detection terminal. In other words, this state indicates that whether the generated voltage is 0 V or the constant voltage value DV, and whether the position is the first voltage value detection terminal or the second voltage value detection terminal, / D input. Here, it is compared with the data stored in the microprocessor in advance, the model and capacity of the charge / discharge battery are determined, and appropriate charging can be performed based on this determination.
[0015]
【Example】
Hereinafter, the present invention will be described with reference to FIG. 1 and FIG.
[0016]
FIGS. 1 and 2 are circuit diagrams showing different configuration examples of the charge / discharge battery model and capacity determination means according to the present invention. FIG. 1 shows a nickel-hydrogen battery pack, and FIG. 2 shows nickel. Each case of a cadmium battery pack is shown.
[0017]
First, in FIG. 1, 14 is a charge / discharge type battery drive device (charger), and 15 'is a nickel metal hydride battery pack. Here, the charge / discharge battery drive device (charger) 14 includes an external connection (input / output) terminal 16, a rectifier 17, a constant current charge terminal 19A connected to the constant current source 18, a charge / discharge battery Temperature detection terminal 21A and battery capacity detection terminal 22A that are connected separately to the microprocessor 20 containing the model and capacity judgment data, the constant voltage power supply 23 that gives the microprocessor 20 a constant voltage DV and a ground potential GN, and the ground potential GN The constant voltage is supplied to each of the circuits 25 and 26 to which the microprocessor 20 is connected to the temperature detection terminal 21A and the battery capacity detection terminal 22A separately through the resistors 27A and 27B having a constant resistance value. Constant voltage circuits 28 and 29 are provided, and a charge control unit 30 is connected to the microprocessor 20 via the constant voltage power source 23 to control the constant current source 18. Then, with respect to the charge / discharge type battery drive device (charger) 14, the charge / discharge type battery pack 15 'includes corresponding primary supply terminals 19A, 19B, temperature detection terminals 21A, 21B, battery capacity detection terminals 22A. 22B and ground terminals 24A and 24B are connected together. The charge / discharge type battery pack 15 'has a charge / discharge type battery 31 and a temperature detection terminal 21B side connected to a ground terminal 24B side via a temperature detection element (thermistor) 32, and a battery capacity detection terminal. The 22B side employs a connection configuration that opens and closes the battery capacity detection terminal 22B and the ground terminal 24B side according to the capacity (large or small) of the battery 31. Next, the operation in the case of the circuit configuration will be described. For example, when the charge / discharge battery 31 has a large capacity, the battery capacity detection terminal 22B and the ground terminal 24B are closed (short), and when the charge / discharge battery 31 has a small capacity, the battery capacity detection terminal 22B Set the ground terminal 24B side to open. In this state, if the battery has a large capacity, 0 V is detected at the battery capacity detection terminal 22A on the charge / discharge battery drive device (charger) 14 side, and if the battery has a small capacity, the charge / discharge battery A constant voltage DV is detected at the battery capacity detection terminal 22A on the drive device (charger) 14 side. Then, the detection value 0 V for the battery capacity detection terminal 22A, or constant voltage DV is A / D input to the microprocessor 20, is compared with determination data that is incorporated in advance microprocessor 20, battery The capacity is determined.
[0018]
On the other hand, between the temperature detection terminals 21A and 21B, the temperature detection terminal 21B side of the charge / discharge battery pack 15 'is connected to the ground terminal 24B side via the temperature detection element (thermistor) 32. 0 V or constant voltage DV is not detected at the temperature detection terminal 21A on the discharge battery-powered device (charger) 14 side. In other words, in the case of a nickel metal hydride type charge / discharge battery, 0 V or constant voltage DV is detected only at the battery capacity detection terminal 22A on the charge / discharge battery drive device (charger) 14 side. The magnitude of the battery capacity is determined based on the detected value, and the detected value is obtained at the battery capacity detection terminal 22A, whereby it is determined that the type of the charge / discharge battery is a nickel-hydrogen system.
[0019]
FIG. 2 shows a nickel cadmium battery pack. Here, the configuration of the charge / discharge battery pack 15 ″ is the same as that shown in FIG. 1 except that the configuration is as follows. ″ Connects the nickel cadmium charge / discharge battery 31 and the battery capacity detection terminal 22B side to the ground terminal 24B side via the temperature detection element (thermistor) 32, and the temperature detection terminal 21B side The connection configuration is used to open and close the temperature detection terminal 21B and the grounding terminal 24B according to the capacity (large and small).
[0020]
In the case of this circuit configuration, for example, when the charge / discharge battery 31 has a large capacity, the temperature detection terminal 21B and the ground terminal 24B are closed (short-circuited), and the charge / discharge battery 31 has a small capacity. Set the temperature detection terminal 21B and ground terminal 24B side to open. In this state, if the battery has a large capacity, 0 V is detected at the temperature detection terminal 21A on the charge / discharge battery drive device (charger) 14 side, and if the battery has a small capacity, the battery is driven by a charge / discharge battery. Constant voltage DV is detected at the temperature detection terminal 21A on the device (charger) 14 side. Then, the detection value 0 V for the battery capacity detection terminal 21A, or constant voltage DV is A / D input to the microprocessor 20, is compared with determination data that is incorporated in advance microprocessor 20, battery The capacity is determined.
[0021]
On the other hand, between the battery capacity detection terminals 22A and 22B, the battery capacity detection terminal 22B side of the charge / discharge battery pack 15 ″ is connected to the ground terminal 24B side via the temperature detection element (thermistor) 32. 0 V or constant voltage DV is not detected at the battery capacity detection terminal 22A on the charge / discharge battery drive device (charger) 14 side, that is, charge / discharge type for nickel cadmium type charge / discharge type batteries. 0 V or constant voltage DV is detected only at the temperature detection terminal 21A on the battery-driven device (charger) 14 side. The detected value is used to determine whether the battery capacity is large or small. By obtaining it at the terminal 21A, it is determined that the type of the charge / discharge battery is nickel cadmium.
[0022]
In addition, this invention is not limited to the said Example, A various deformation | transformation is possible in the range which does not deviate from the meaning of invention.
[0023]
【The invention's effect】
As described above, according to the charge / discharge type / capacity determination method of the present invention, the type and capacity of the charge / discharge battery (charge / discharge battery pack) can be easily determined. Therefore, the required constant current charging can be performed under appropriate conditions according to the type and capacity of the charge / discharge battery. Therefore, it is possible to ensure safety in driving and handling operations of chargeable / dischargeable batteries or chargeable / dischargeable battery packs and to extend their service life, further increasing the versatility and practicality of this kind of chargeable / dischargeable batteries. There are many advantages in facilitating.
[Brief description of the drawings]
FIG. 1 is a circuit diagram for explaining an embodiment of a type / capacity determination method for a charge / discharge type battery according to the present invention.
FIG. 2 is a circuit diagram for explaining another embodiment of the charge / discharge battery type / capacity determination method according to the present invention.
FIG. 3 is a circuit diagram for explaining an embodiment of a conventional charge / discharge battery type determination method;
FIG. 4 is a circuit diagram for explaining an embodiment of a conventional charge / discharge battery capacity determination method;
[Explanation of symbols]
1,14 …… Charge / discharge battery drive equipment (charger) 2,16 …… External connection terminal 3,17 …… Rectifier 4,18 …… Constant current source 5 …… First resistor 6 …… Model Detector 7, 30 ... Charge control unit 8, 15, 15 ', 15 "... Charge / discharge battery pack 9,31 ... Charge / discharge battery 10 ... Second resistance charge 11 ... Primary Supply terminal 12 …… Detection terminal 13, 24a, 24b …… Ground terminal 19a, 19b …… Constant current charging terminal 20 …… Microprocessor 21a, 21b …… Temperature detection terminal 22a, 22b …… Battery capacity detection terminal 25, 26 …… Circuit 27a, 27b …… Resistance 28, 29 …… Constant voltage circuit
32 …… Temperature detection element (Thermistor)

Claims (1)

定電流源に接続する定電流充電用端子、充・放電型電池の機種および容量判定データを内蔵するマイクロプロセッサーに各別に接続する第1の電圧値検出端子、第2の電圧値検出端子、接地端子、前記マイクロプロセッサーに定電圧および接地電位を与える定電圧電源、前記第1の電圧値検出端子および第2の電圧値検出端子のマイクロプロセッサーに各別に接続する回路に抵抗値が一定の抵抗を介して前記定電圧を各別に与える定電圧回路、前記定電圧電源を介してマイクロプロセッサーに接続して定電流源を制御する充電制御部を具備して成る充・放電型電池駆動機器に、充・放電型電池の定電流充電用端子、第1の電圧値検出端子、第2の電圧値検出端子および接地端子をそれぞれ対応させて接続し、充・放電型電池の種別、容量を判定する方法において、
前記充・放電型電池の第1の電圧値検出端子側もしくは第2の電圧値検出端子側のいずれか一方にサーミスターを介挿しておき、第2の電圧値検出端子側もしくは第1の電圧値検出端子側の開もしくは閉による充・放電型電池駆動機器側の第2の電圧値検出端子もしくは第1の電圧値検出端子のいずれか一方による0V電圧又は前記定電圧の検出並びに他方による前記サーミスターで分圧された電圧の検出により、電池容量の大小電池の種別を、それぞれ判定することを特徴とする充・放電型電池の種別容量の判定方法。
A constant current charging terminal connected to a constant current source, a charge / discharge battery model and a first voltage value detection terminal, a second voltage value detection terminal connected to a microprocessor incorporating capacity determination data, and a ground A resistor having a constant resistance value is connected to a terminal, a constant voltage power source for applying a constant voltage and a ground potential to the microprocessor, and a circuit connected to the microprocessor of each of the first voltage value detection terminal and the second voltage value detection terminal. A charge / discharge type battery drive device comprising a constant voltage circuit for supplying the constant voltage via the constant voltage power supply and a charge control unit connected to a microprocessor via the constant voltage power source to control the constant current source. - constant current charging terminal of the discharging battery, the first voltage value detection terminal, the second voltage value detection terminal and the ground terminal is connected in correspondence respectively determine the type, the amount of charging and discharging batteries A method of,
The thermistor is inserted in either the 1st voltage value detection terminal side or the 2nd voltage value detection terminal side of the said charge / discharge type battery, and the 2nd voltage value detection terminal side or the 1st voltage detection of 0V voltage or the constant voltage depends on one of the second voltage value detection terminal or the first voltage value detection terminal by opening or closing value detection terminal side charging and discharging battery powered equipment side and the by the other A method for determining the type and capacity of a charge / discharge type battery, wherein the size of the battery capacity and the type of the battery are determined by detecting the voltage divided by the thermistor .
JP29326394A 1994-11-28 1994-11-28 Judgment method of charge / discharge battery type and capacity Expired - Fee Related JP3672345B2 (en)

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