JPH11355969A - Charging equipment - Google Patents

Charging equipment

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Publication number
JPH11355969A
JPH11355969A JP16012698A JP16012698A JPH11355969A JP H11355969 A JPH11355969 A JP H11355969A JP 16012698 A JP16012698 A JP 16012698A JP 16012698 A JP16012698 A JP 16012698A JP H11355969 A JPH11355969 A JP H11355969A
Authority
JP
Japan
Prior art keywords
battery
charging
battery voltage
change value
capacity
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
Application number
JP16012698A
Other languages
Japanese (ja)
Inventor
Toshiaki Nakada
俊明 中田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP16012698A priority Critical patent/JPH11355969A/en
Publication of JPH11355969A publication Critical patent/JPH11355969A/en
Pending legal-status Critical Current

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an economic charging equipment which can cope with a plurality of types of secondary batteries of different capacities and can charge the batteries automatically under appropriate charging conditions for the battery capacities. SOLUTION: Being provided with a battery voltage detecting means 2, a battery voltage change detecting means 4, a storing means 5, an arithmetic unit 6, and a charging current controlling means 8, this equipment detects the battery voltage and a change in battery voltage under specified conditions and then calculates the battery capacity based on the detected battery voltage and the change in battery voltage and the data and a calculating method stored in the storing means 5 and then charges a battery 12 under the appropriate charging conditions for the calculated battery capacity. Due to this structure, the battery capacity can be correctly detected and thereby the battery 12 can be charged under the appropriate charging conditions for the battery capacity.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は二次電池の電池容量
を判別した上で二次電池を充電する充電装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging device for charging a secondary battery after determining the battery capacity of the secondary battery.

【０００２】[0002]

【従来の技術】今日、携帯型のパーソナルコンピュータ
ー等の電子機器に電源を供給する為に、リチウムイオン
二次電池等を複数本内蔵した電池パックが用いられてい
る。同一携帯型のパーソナルコンピューターでも使用目
的や形態が多様化している為に同種・異容量の電池パッ
クが複数種用いられており、更に、携帯型パーソナルコ
ンピューター毎に電池容量の異なる電池パックが作られ
ている。同様に携帯電話等の携帯型電子機器においても
同種・異容量の電池パックが多数作られている。同種・
異容量の電池パックの品種が多くなってきた為に、電池
毎に専用の充電装置を準備することが困難になってきて
おり、電池容量の異なる電池パックを同一の充電装置で
充電することが多くなってきている。2. Description of the Related Art Today, a battery pack containing a plurality of lithium ion secondary batteries or the like is used to supply power to an electronic device such as a portable personal computer. Since the purpose and form of use are diversified in the same portable personal computer, multiple types of battery packs of the same type and different capacities are used, and battery packs with different battery capacities are made for each portable personal computer. ing. Similarly, many battery packs of the same type and different capacities are manufactured in portable electronic devices such as mobile phones. Same kind
As the types of battery packs with different capacities have increased, it has become difficult to prepare dedicated charging devices for each battery, and it is possible to charge battery packs with different battery capacities using the same charging device. More and more.

【０００３】図９に従来の充電装置のブロック図を示
す。図９において、電池容量を判別する為に、電池パッ
ク３２の所定の位置に磁性体１７を配置しておき、充電
装置３１の磁気検出手段１８が磁性体１７の配置を検出
して電池容量を判別する。FIG. 9 shows a block diagram of a conventional charging device. In FIG. 9, in order to determine the battery capacity, the magnetic body 17 is arranged at a predetermined position of the battery pack 32, and the magnetism detecting means 18 of the charging device 31 detects the arrangement of the magnetic body 17 to determine the battery capacity. Determine.

【０００４】あるいは、電池パックの形状に差を設けて
充電装置が形状の差を検出して電池容量を判別すること
も行われている。[0004] Alternatively, it is also practiced to provide a difference in the shape of the battery pack so that the charging device detects the difference in the shape to determine the battery capacity.

【０００５】また、最近では電池パックにマイクロコン
ピューターを内蔵し、電池パックと充電装置との間で電
池容量等の電池情報を通信するスマートバッテリパック
も登場してきている。[0005] Recently, smart battery packs, in which a microcomputer is built in the battery pack and which communicates battery information such as battery capacity between the battery pack and the charging device, have appeared.

【０００６】[0006]

【発明が解決しようとする課題】一般に、二次電池を充
電する場合、電池の性能や寿命に悪影響を及ぼさずに、
短時間で充電することが求められ、電池に対応した適切
な充電条件で充電する必要があり、充電条件の主要条件
である充電電流は、主として電池容量により決まるの
で、電池容量の判別が重要である。Generally, when a secondary battery is charged, it does not adversely affect the performance and life of the battery.
It is required to charge in a short time, it is necessary to charge under appropriate charging conditions corresponding to the battery, and the charging current, which is a main condition of the charging condition, is mainly determined by the battery capacity. is there.

【０００７】上記従来の技術では、充電装置は磁性体の
配置を検知する手段を設けたり、電池パックの形状差の
検知手段を設ける等、異なる電池パックに対応できる様
に多くの異なる構成を準備しなければならず、あるい
は、電池パックと充電装置との間に通信手段を設けなけ
ればならず、充電装置の小型化に問題があり、また不経
済である。In the above prior art, the charging device is provided with a number of different configurations so as to be compatible with different battery packs, such as providing a means for detecting the arrangement of the magnetic material and a means for detecting a difference in the shape of the battery pack. Or a communication means must be provided between the battery pack and the charging device, which causes a problem in miniaturization of the charging device and is uneconomical.

【０００８】更に、磁性体の配置の検知や電池パックの
形状差の検知や電池パックと充電装置間の通信におい
て、誤認識や通信エラーが発生することもあり、この場
合に電池容量の判別が必ずしも適切に行われなくて、電
池の性能や寿命に悪影響を及ぼす課題がある。Further, in the detection of the arrangement of the magnetic material, the difference in the shape of the battery pack, and the communication between the battery pack and the charging device, erroneous recognition or a communication error may occur. There is a problem that it is not always performed properly and adversely affects the performance and life of the battery.

【０００９】尚、電池容量の判別が不適切で、不適切な
充電条件で充電した場合、充電時間を長時間要したり、
過大電流で充電されることにより電池の性能や寿命に悪
影響を及ぼし、最悪の場合には異常発熱や破裂の恐れも
ある。[0009] If the battery capacity is inappropriately determined and the battery is charged under inappropriate charging conditions, a long charging time may be required,
Charging with an excessive current adversely affects the performance and life of the battery, and in the worst case, may cause abnormal heat generation or rupture.

【００１０】上記の問題に鑑み、電池容量を確実に判別
して、電池容量に応じた適切な充電条件で二次電池を充
電する充電装置を経済的に提供すること、および充電装
置と電池パックの小型化を本発明の目的としている。In view of the above problems, it is an object of the present invention to economically provide a charging device that reliably determines a battery capacity and charges a secondary battery under appropriate charging conditions according to the battery capacity. Is an object of the present invention.

【００１１】[0011]

【課題を解決するための手段】上記の課題を解決する為
に、本発明の充電装置においては、所定の条件での電池
電圧および電池電圧変化値を検知し、検知した電池電圧
と電池電圧変化値および充電装置の記憶装置に記憶され
ている電池容量と電池電圧および電池電圧変化値との関
係特性のデータおよび演算方法に基づいて電池容量を算
出し、算出した電池容量に応じた適切な充電条件で二次
電池を充電する。この構成により、電池容量の判別が適
切にでき、電池容量に応じた適切な充電条件で二次電池
を充電する充電装置を経済的に提供でき、充電装置と電
池パックの小型化も実現できる。In order to solve the above-mentioned problems, a charging device of the present invention detects a battery voltage and a battery voltage change value under predetermined conditions, and detects the detected battery voltage and the battery voltage change. The battery capacity is calculated based on the data and the calculation method of the relationship between the battery capacity and the battery voltage and the battery voltage change value stored in the storage device of the charging device and the battery capacity, and the appropriate charging according to the calculated battery capacity is performed. Charge the secondary battery under the conditions. With this configuration, it is possible to appropriately determine the battery capacity, to economically provide a charging device for charging the secondary battery under appropriate charging conditions according to the battery capacity, and to realize the miniaturization of the charging device and the battery pack.

【００１２】尚、電池電圧変化値は、電池電圧の変化量
や変化率あるいは電池電圧の変化量や変化率が規定量に
なるに要する時間等により検知することができる。The battery voltage change value can be detected by the change amount and the change rate of the battery voltage, the time required for the change amount and the change rate of the battery voltage to reach a specified amount, and the like.

【００１３】電池電圧と電池電圧変化値の検知、電池容
量の算出および電池容量に応じた適切な充電条件の設定
は充電開始時に行うことにより、充電開始直後から適切
な充電条件で充電できる。尚、充電中の所定期間あるい
は所定条件時に実施することを除外するものではない。The detection of the battery voltage and the change in the battery voltage, the calculation of the battery capacity, and the setting of appropriate charging conditions according to the battery capacity are performed at the start of charging, so that charging can be performed under appropriate charging conditions immediately after the start of charging. It should be noted that this does not exclude the case where the operation is performed during a predetermined period or a predetermined condition during charging.

【００１４】充電電流を規定レベル１から規定レベル２
に切り替えて、この時の電池電圧の変化値を検知するこ
とにより、電池容量を適切に算出できる電池電圧変化値
を知ることができる。尚、電池電圧の変化値を検知する
方法として、規定レベルの電流で充電する代わりに、規
定レベルの電流で放電することでも可能である。この場
合には規定レベルの電流を放電させる放電電流制御手段
が必要となる。The charging current is changed from the specified level 1 to the specified level 2.
And by detecting the change value of the battery voltage at this time, it is possible to know the battery voltage change value at which the battery capacity can be appropriately calculated. In addition, as a method of detecting a change value of the battery voltage, instead of charging with a specified level of current, discharging may be performed with a specified level of current. In this case, a discharge current control means for discharging a specified level of current is required.

【００１５】前記充電電流の規定レベル１あるいは規定
レベル２を未充電状態（充電電流０ｍＡ）とすることに
より、正確な電池電圧を知ることができ、また電池電圧
変化値の検知精度も向上し、電池容量の算出精度が向上
する。By setting the specified level 1 or the specified level 2 of the charging current to an uncharged state (charging current 0 mA), it is possible to know an accurate battery voltage, and to improve the detection accuracy of a battery voltage change value. The calculation accuracy of the battery capacity is improved.

【００１６】充電電流を規定レベル３にて充電し、予め
定められた規定時間経過の前後の電池電圧の変化値を検
知することにより、電池容量を適切に算出できる電池電
圧変化値を知ることができる。尚、前記規定時間は予め
定められた時間でもよく、あるいは電池電圧や温度等の
条件により規定される時間でもよい。By charging the charging current at the specified level 3 and detecting the changed value of the battery voltage before and after the lapse of a predetermined specified time, it is possible to know the battery voltage change value that can appropriately calculate the battery capacity. it can. The specified time may be a predetermined time or a time specified by conditions such as battery voltage and temperature.

【００１７】充電電流を規定レベル３にて充電し、予め
定められた電池電圧の変化量や変化率が規定量になるに
要する時間を電池電圧変化値として検知することによ
り、電池容量を適切に算出できる電池電圧変化値を知る
ことができる。The battery capacity is appropriately charged by charging the charging current at the specified level 3 and detecting the time required for the predetermined amount of change in the battery voltage or the change rate to reach the specified amount as the battery voltage change value. The battery voltage change value that can be calculated can be known.

【００１８】尚、前記電池電圧の変化量や変化率の規定
量は電池電圧や電池温度等の条件により定まる値でよ
く、一定値である必要はない。The specified amount of the change in the battery voltage and the change rate may be a value determined by conditions such as the battery voltage and the battery temperature, and need not be a constant value.

【００１９】二次電池を充電する場合に、過大電流で充
電すると電池の性能や寿命に悪影響を及ぼす。電池を充
電装置に装着後、初めての電池電圧と電池電圧変化値の
検知時に流す充電電流を充電装置が充電対象とする電池
の内で最小の電池容量の電池に許容される充電電流値の
最大値より小さくすることにより、全ての電池に対して
過大電流にならない様にでき、電池の性能や寿命への悪
影響を防止できる。When charging a secondary battery, charging with an excessive current adversely affects the performance and life of the battery. After the battery is installed in the charging device, the charging current that flows when the battery voltage and the battery voltage change value are detected for the first time is the maximum charging current value allowed for the battery with the smallest battery capacity among the batteries to be charged by the charging device. By making the value smaller than the value, it is possible to prevent an excessive current from being applied to all the batteries, and to prevent adverse effects on the performance and life of the batteries.

【００２０】二次電池は化学反応により電気エネルギー
の発生または蓄積がなされている為に、二次電池の特性
は温度の影響を受ける。充電装置がサポートする電池容
量の種別が少ない場合は高精度に電池容量を算出しなく
ても、電池容量を判別できる為に電池温度を検知し温度
補正する必要がない。しかし、充電時間をより短くする
ことが求められること等で、充電電流を電池の許容上限
近くで充電する場合には高精度に電池容量を算出するこ
とが必要となる。電池温度を検知し、検知された電池温
度に基づき電池容量あるいは充電条件を温度補正するこ
とにより、より適切な充電条件で充電することができ
る。Since electric energy is generated or stored in a secondary battery by a chemical reaction, the characteristics of the secondary battery are affected by temperature. When the type of the battery capacity supported by the charging device is small, the battery capacity can be determined without calculating the battery capacity with high accuracy, so that it is not necessary to detect the battery temperature and correct the temperature. However, since the charging time is required to be shorter, the battery capacity needs to be calculated with high accuracy when the charging current is charged near the allowable upper limit of the battery. By detecting the battery temperature and correcting the battery capacity or the charging condition based on the detected battery temperature, the battery can be charged under more appropriate charging conditions.

【００２１】[0021]

【発明の実施の形態】本発明の請求項１に記載の発明
は、電池電圧の検知手段と、電池電圧変化値の検知手段
と、電池容量と前記電池電圧および前記電池電圧変化値
との関係特性のデータおよび電池容量の演算方法を記憶
する記憶装置と、前記電池容量を演算する演算装置と、
充電電流値を制御する充電電流制御手段とを有する充電
装置において、検知された前記電池電圧と前記電池電圧
変化値および前記記憶装置に記憶されているデータおよ
び演算方法に基づいて前記電池容量を算出し、算出した
前記電池容量に応じた適切な充電条件で二次電池を充電
するように制御する制御手段を備えたことを特徴とする
充電装置としたものである。この構成により、ある電池
電圧での電池電圧変化値が電池容量によって異なること
に着目して、電池電圧と電池電圧変化値から電池容量を
算出し、電池容量に応じた適切な充電条件で充電するこ
とができる様になる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a battery voltage detecting means, a battery voltage change value detecting means, and a relationship between a battery capacity, the battery voltage and the battery voltage change value. A storage device for storing characteristic data and a method for calculating the battery capacity, an arithmetic device for calculating the battery capacity,
In a charging device having charging current control means for controlling a charging current value, the battery capacity is calculated based on the detected battery voltage, the battery voltage change value, data stored in the storage device, and a calculation method. The charging device further includes control means for controlling the secondary battery to be charged under appropriate charging conditions according to the calculated battery capacity. With this configuration, focusing on the fact that the battery voltage change value at a certain battery voltage differs depending on the battery capacity, the battery capacity is calculated from the battery voltage and the battery voltage change value, and the battery is charged under appropriate charging conditions according to the battery capacity. You will be able to do it.

【００２２】本発明の請求項２に記載の発明は、充電開
始時に前記電池容量の算出および前記電池容量に応じた
適切な充電条件の設定を行う制御手段を有することを特
徴とする請求項１に記載の充電装置としたものであり、
充電開始直後から適切な充電条件で充電することができ
る。According to a second aspect of the present invention, there is provided a control means for calculating the battery capacity and setting appropriate charging conditions according to the battery capacity at the start of charging. The charging device described in the above,
Immediately after the start of charging, charging can be performed under appropriate charging conditions.

【００２３】本発明の請求項３に記載の発明は、前記電
池電圧および前記電池電圧変化値の検知時に、充電電流
を規定レベル１から規定レベル２に切り替えた場合の電
池電圧の変化値を前記電池電圧変化値としたことを特徴
とする請求項１または請求項２に記載の充電装置とした
ものであり、電池容量を適切に算出できる電池電圧変化
値を知ることができる。According to a third aspect of the present invention, when the battery voltage and the battery voltage change value are detected, the change value of the battery voltage when the charging current is switched from the specified level 1 to the specified level 2 is determined. The battery device according to claim 1 or 2, wherein the battery voltage change value is set as a battery voltage change value, and a battery voltage change value at which a battery capacity can be appropriately calculated can be known.

【００２４】本発明の請求項４に記載の発明は、前記充
電電流の規定レベル１あるいは規定レベル２を未充電状
態としたことを特徴とする請求項３に記載の充電装置と
したものであり、電池電圧および電池電圧変化値の検知
精度が向上し、電池容量の算出精度が向上することによ
り、より適切な充電条件で充電できる。According to a fourth aspect of the present invention, there is provided the charging device according to the third aspect, wherein the specified level 1 or the specified level 2 of the charging current is set in an uncharged state. As a result, the detection accuracy of the battery voltage and the change value of the battery voltage is improved, and the calculation accuracy of the battery capacity is improved, so that the battery can be charged under more appropriate charging conditions.

【００２５】本発明の請求項５に記載の発明は、充電電
流を規定レベル３にて充電し、規定時間経過の前後の電
池電圧の変化値を前記電池電圧変化値としたことを特徴
とする請求項１または請求項２に記載の充電装置とした
ものであり、電池容量を適切に算出できる電池電圧変化
値を知ることができ、電池電圧と電池電圧変化値から電
池容量を算出し、電池容量に応じた適切な充電条件で充
電することができる様になる。The invention according to claim 5 of the present invention is characterized in that a charging current is charged at a specified level 3, and a change value of the battery voltage before and after a lapse of a specified time is defined as the battery voltage change value. A battery device according to claim 1 or 2, wherein a battery voltage change value capable of appropriately calculating the battery capacity can be known, and the battery capacity is calculated from the battery voltage and the battery voltage change value. The battery can be charged under appropriate charging conditions according to the capacity.

【００２６】本発明の請求項６に記載の発明は、充電電
流を規定レベル３にて充電し、電池電圧の変化量や変化
率が規定量になるに要する時間を前記電池電圧変化値と
したことを特徴とする請求項１または請求項２に記載の
充電装置としたものであり、電池容量を適切に算出でき
る電池電圧変化値を知ることができ、電池電圧と電池電
圧変化値から電池容量を算出し、電池容量に応じた適切
な充電条件で充電することができる様になる。In the invention according to claim 6 of the present invention, the charging current is charged at a specified level 3, and the time required for the change amount and the change rate of the battery voltage to reach the specified amount is defined as the battery voltage change value. A battery device according to claim 1 or 2, wherein a battery voltage change value capable of appropriately calculating the battery capacity can be known, and the battery capacity is calculated from the battery voltage and the battery voltage change value. Is calculated, and the battery can be charged under an appropriate charging condition according to the battery capacity.

【００２７】本発明の請求項７に記載の発明は、前記電
池電圧と前記電池電圧変化値の初回の検知時において、
前記初回の検知時に流す充電電流を充電装置が充電対象
とする電池の内で最小の電池容量の電池に許容される充
電電流値の最大値より小さくしたことを特徴とする請求
項１、請求項２、請求項３、請求項４、請求項５または
請求項６に記載の充電装置としたものであり、充電装置
が充電対象とする全ての電池に対して過大電流にならな
い様にすることができ、電池の性能や寿命への悪影響を
防止できる。According to a seventh aspect of the present invention, when the battery voltage and the battery voltage change value are detected for the first time,
The charging current flowing at the time of the first detection is smaller than a maximum value of a charging current value allowed for a battery having a minimum battery capacity among batteries to be charged by a charging device. 2. The charging device according to claim 3, claim 4, claim 5, or claim 6, wherein the charging device does not cause an excessive current to all batteries to be charged. This can prevent adverse effects on battery performance and life.

【００２８】本発明の請求項８に記載の発明は、電池温
度を検知する電池温度検知手段により前記電池温度を検
知し、検知された前記電池温度に基づき前記電池電圧と
前記電池電圧変化値あるいは前記電池容量あるいは前記
充電条件を温度補正することを特徴とする請求項１、請
求項２、請求項３、請求項４、請求項５、請求項６また
は請求項７に記載の充電装置としたものであり、電池温
度に基づき電池電圧と電池電圧変化値あるいは電池容量
あるいは充電条件を補正することにより、より適切な充
電条件で充電することができる。According to an eighth aspect of the present invention, the battery temperature is detected by battery temperature detecting means for detecting the battery temperature, and the battery voltage and the battery voltage change value or the battery voltage change value are determined based on the detected battery temperature. The battery device according to any one of claims 1, 2, 3, 4, 5, 6, and 7 wherein the battery capacity or the charging condition is temperature-corrected. The battery can be charged under more appropriate charging conditions by correcting the battery voltage and the battery voltage change value or the battery capacity or the charging conditions based on the battery temperature.

【００２９】以下、本発明の充電装置の実施の形態１に
ついて、図１、図３、図５および図６を用いて説明す
る。Hereinafter, a first embodiment of the charging apparatus of the present invention will be described with reference to FIGS. 1, 3, 5 and 6.

【００３０】（実施の形態１）図１は本発明の充電装置
の実施の形態１の構成を示すブロック図であり、１は充
電装置、２は電池電圧の検知手段、３はマイクロコント
ローラ等で構成される充電装置の制御手段、４は電池電
圧変化値の検知手段、５は記憶手段、６は演算手段、７
は充電制御手段、８は充電電流制御手段、９は充電電圧
制御手段、１０は電力制御手段、１１は電池パック、１
２は電池、１３は電池保護回路、１４は温度センサー、
１５は電池温度検知手段、１６は直流電源である。(Embodiment 1) FIG. 1 is a block diagram showing a configuration of a charging apparatus according to Embodiment 1 of the present invention, wherein 1 is a charging apparatus, 2 is a battery voltage detecting means, and 3 is a microcontroller and the like. Control means of the charging device configured; 4 means for detecting a change in battery voltage; 5 means storage means; 6 means computing means;
Is a charge control means, 8 is a charge current control means, 9 is a charge voltage control means, 10 is a power control means, 11 is a battery pack,
2 is a battery, 13 is a battery protection circuit, 14 is a temperature sensor,
Reference numeral 15 denotes a battery temperature detecting means, and reference numeral 16 denotes a DC power supply.

【００３１】図１において、電池パック１１は、内部に
過充電や過放電や過大放電等を保護する電池保護回路１
３とリチウムイオン二次電池やニッケル・水素二次電池
等である電池１２と電池温度を検出する温度センサー１
４とからなっている。In FIG. 1, a battery pack 11 includes a battery protection circuit 1 for protecting overcharge, overdischarge, overdischarge, and the like.
3, a battery 12 such as a lithium ion secondary battery or a nickel hydrogen secondary battery, and a temperature sensor 1 for detecting the battery temperature
It consists of four.

【００３２】充電装置１は、内部に電池電圧を検知する
電池電圧検知手段２と電池温度を検知する電池温度検知
手段１５とによって電池１２の電池状態（電池電圧、電
池電圧変化値、電池温度）を検知し、制御手段３が電池
１２の容量や状態を判断して充電制御手段７に充電条件
を指示し、この指示された充電条件（充電電圧および充
電電流）に基づき充電制御手段７がＦＥＴやトランジス
ター等からなる電力制御手段１０を制御して電池パック
１１を充電する。In the charging device 1, the battery state (battery voltage, battery voltage change value, battery temperature) of the battery 12 is determined by a battery voltage detecting means 2 for detecting the battery voltage and a battery temperature detecting means 15 for detecting the battery temperature. The control means 3 determines the capacity and state of the battery 12 and instructs the charge control means 7 to charge conditions. Based on the instructed charge conditions (charge voltage and charge current), the charge control means 7 The battery pack 11 is charged by controlling the power control means 10 including a transistor and a transistor.

【００３３】充電装置１に電池パック１１が装着される
と、後述のように充電装置１は電池容量の容量判別を行
い、判別した電池容量に基づき適正な充電条件を設定
し、設定された適正な充電条件により電池パック１１を
充電する。When the battery pack 11 is mounted on the charging device 1, the charging device 1 determines the capacity of the battery capacity as described later, sets appropriate charging conditions based on the determined battery capacity, and sets the set appropriate charging condition. The battery pack 11 is charged according to appropriate charging conditions.

【００３４】図３は、本発明の充電装置の実施の形態１
の制御シーケンスを示すフローチャートであり、以下に
図３のフローチャートにしたがって、電池容量の判別や
充電制御等の詳細説明を行う。FIG. 3 shows a first embodiment of the charging device of the present invention.
Is a flowchart showing the control sequence of the first embodiment, and details of determination of battery capacity, charging control, and the like will be described below in accordance with the flowchart of FIG.

【００３５】充電装置１の制御手段３は電池温度検知手
段１５の検知結果を定期的にモニターしており、検知さ
れた電池温度が適正な範囲になった場合に、電池パック
１１が装着されたと判断して電池容量の判別を開始する
（ステップＳ１）。制御手段３は予め記憶手段５に記憶
されている電池容量の判別時の規定電流値（規定レベル
１と規定レベル２）の内で、予め初回の検知時に選択す
る様に設定されている規定電流値（規定レベル１ａと規
定レベル２ａ）を選択する（ステップＳ２）。The control means 3 of the charging device 1 periodically monitors the detection result of the battery temperature detection means 15, and when the detected battery temperature falls within an appropriate range, it is determined that the battery pack 11 has been mounted. Then, the determination of the battery capacity is started (step S1). The control means 3 sets a specified current value that is previously selected at the time of the first detection from among specified current values (specified level 1 and specified level 2) at the time of determination of the battery capacity stored in the storage means 5 in advance. The value (specified level 1a and specified level 2a) is selected (step S2).

【００３６】尚、前記規定レベル１ａと規定レベル２ａ
は充電装置１が充電対象とする電池の内で最小の電池容
量の電池に許容される充電電流値の最大値より小さい値
に設定しており、電池容量の判別時に全ての電池に対し
て過大電流で充電されることを防止し、その結果とし
て、電池の性能や寿命への悪影響を防止している。The specified level 1a and the specified level 2a
Is set to a value smaller than the maximum value of the charging current value allowed for the battery having the minimum battery capacity among the batteries to be charged by the charging apparatus 1, and excessively large for all batteries when the battery capacity is determined. The battery is prevented from being charged with electric current, and as a result, adverse effects on the performance and life of the battery are prevented.

【００３７】制御手段３は、充電電流制御手段８に規定
レベル１ａの充電電流値や充電電圧制御手段９に充電電
圧値を設定し充電を開始させ（ステップＳ３）、規定レ
ベル１ａの充電電流値で充電している時の電池電圧を電
池電圧検知手段２が検知し、検知した電池電圧（Ｖ１）
を制御手段３が記憶手段５に保存し（ステップＳ４）、
制御手段３は充電電流制御手段８にステップＳ２で選択
した規定レベル２ａの充電電流値を設定して充電電流値
を変更させ（ステップＳ５）、規定レベル２ａの充電電
流値で充電している時の電池電圧を電池電圧検知手段２
が検知し、検知した電池電圧（Ｖ２）を制御手段３が記
憶手段５に保存する（ステップＳ６）。The control means 3 sets the charging current value at the specified level 1a in the charging current control means 8 and the charging voltage value in the charging voltage control means 9 to start charging (step S3), and sets the charging current value at the specified level 1a. The battery voltage detecting means 2 detects the battery voltage at the time of charging with the battery, and the detected battery voltage (V1)
Is stored in the storage means 5 by the control means 3 (step S4),
The control means 3 sets the charging current value of the specified level 2a selected in step S2 to the charging current control means 8 to change the charging current value (step S5), and when the charging is performed at the charging current value of the specified level 2a. Battery voltage detection means 2
Are detected, and the control means 3 stores the detected battery voltage (V2) in the storage means 5 (step S6).

【００３８】尚、図５は充電電流を規定レベル１から規
定レベル２に切り替えた時の電池電圧の変化を図式的に
示したグラフであり、電池電圧（Ｖ２）は過渡変動の終
了後に検知するのが望ましい。FIG. 5 is a graph schematically showing a change in the battery voltage when the charging current is switched from the specified level 1 to the specified level 2, and the battery voltage (V2) is detected after the end of the transient fluctuation. It is desirable.

【００３９】尚、実施形態１においては充電電流を規定
レベル１から規定レベル２に切り替え後１０秒経過時に
電池電圧（Ｖ２）を検知したが、電池電圧（Ｖ２）の検
知タイミングは実施形態１での方法に限定するものでは
なく、電池電圧（Ｖ２）の過度変動が終了するタイミン
グであればよい。In the first embodiment, the battery voltage (V2) is detected 10 seconds after the charging current is switched from the specified level 1 to the specified level 2, but the detection timing of the battery voltage (V2) is the same as in the first embodiment. The method is not limited to the method described above, and may be any timing as long as the excessive fluctuation of the battery voltage (V2) ends.

【００４０】制御手段３内の電池電圧変化値の検知手段
４は、電池電圧変化値（△Ｖ＝Ｖ２−Ｖ１）を検知する
（ステップＳ７）。検知された電池電圧変化値（△Ｖ）
が適正な範囲でないと電池容量の算出精度が悪化する為
に、電池電圧変化値（△Ｖ）が適正か否かを判定し（ス
テップＳ８）、電池電圧変化値（△Ｖ）が不適正な場合
はステッブＳ２に戻り、検知された電池電圧変化値（△
Ｖ）と電池電圧（Ｖ１あるいはＶ２）および検知時の規
定電流値（規定レベル１ａと規定レベル２ａ）に基づ
き、再検知用の規定電流値（規定レベル１と規定レベル
２）を再選択し、ステップＳ２からステップＳ８を電池
電圧変化値（△Ｖ）が適正になるまでくり返す。The battery voltage change detection means 4 in the control means 3 detects the battery voltage change value (ΔV = V2−V1) (step S7). Detected battery voltage change value (△ V)
If the value is not within the proper range, the accuracy of calculating the battery capacity deteriorates. Therefore, it is determined whether the battery voltage change value (値 V) is appropriate (step S8), and the battery voltage change value (△ V) is inappropriate. In this case, the process returns to step S2, and the detected battery voltage change value (△
V), the battery voltage (V1 or V2), and the specified current value at the time of detection (specified level 1a and specified level 2a), and re-selects the specified current value (specified level 1 and specified level 2) for re-detection, Steps S2 to S8 are repeated until the battery voltage change value (ΔV) becomes appropriate.

【００４１】尚、実施の形態１において、電池容量を２
５０ｍＡＨ〜５００ｍＡＨ，５００ｍＡＨ〜１０００ｍ
ＡＨ，１０００ｍＡＨ〜２０００ｍＡＨ，２０００ｍＡ
Ｈ〜４０００ｍＡＨに４区分し、それぞれの区分に適し
た４種類の規定充電電流値（規定レベル１ａと規定レベ
ル２ａ、規定レベル１ｂと規定レベル２ｂ、規定レベル
１ｃと規定レベル２ｃ、規定レベル１ｄと規定レベル２
ｄ）を、また電池電圧変化値（△Ｖ）の適正範囲を予め
定めて記憶手段５に記憶して使用したが、充電装置１が
充電対象とする電池容量の範囲および電池電圧変化値と
電池電圧の検知精度の向上等により、電池容量を必ずし
も区分する必要がない。また、前記充電電流の規定レベ
ル１（規定レベル１ａ、規定レベル１ｂ、規定レベル１
ｃ、規定レベル１ｄ）または規定レベル２（規定レベル
２ａ、規定レベル２ｂ、規定レベル２ｃ、規定レベル２
ｄ）の一方を未充電状態（０ｍＡ）に設定して、規定レ
ベル１または規定レベル２の一方の電池電圧を検知する
ことにより、電池電圧（Ｖ１）または電池電圧（Ｖ２）
の一方の測定が定常および安定状態にて実施できる為
に、電池電圧と電池電圧変化値の検知精度を向上でき
る。しかし、前記充電電流の規定レベル１または規定レ
ベル２を未充電状態（０ｍＡ）にしなくても、電池電圧
および電池電圧変化値の検知は可能である。In the first embodiment, the battery capacity is set to 2
50mAH-500mAH, 500mAH-1000m
AH, 1000mAH-2000mAH, 2000mA
H to 4000 mAH, and four types of specified charging current values (specified level 1a and specified level 2a, specified level 1b and specified level 2b, specified level 1c and specified level 2c, specified level 1d and Regulation level 2
d), the appropriate range of the battery voltage change value (△ V) was previously determined and stored in the storage means 5 and used. However, the range of the battery capacity to be charged by the charging device 1, the battery voltage change value and the battery It is not always necessary to classify the battery capacity by improving the voltage detection accuracy or the like. In addition, the charging current has a specified level 1 (specified level 1a, specified level 1b, specified level 1).
c, specified level 1d) or specified level 2 (specified level 2a, specified level 2b, specified level 2c, specified level 2)
d) is set to an uncharged state (0 mA), and one of the battery voltages at the specified level 1 or the specified level 2 is detected, whereby the battery voltage (V1) or the battery voltage (V2) is detected.
Can be performed in a steady state and a stable state, so that the detection accuracy of the battery voltage and the battery voltage change value can be improved. However, it is possible to detect the battery voltage and the battery voltage change value without setting the specified level 1 or 2 of the charging current to an uncharged state (0 mA).

【００４２】ステップＳ８で電池電圧変化値（△Ｖ）が
適正であると判定されると、温度センサー１４と電池温
度検知手段１５で電池温度を検知し（ステップＳ９）、
電池電圧（Ｖ１、Ｖ２）や電池電圧変化値（△Ｖ）の温
度補正を行い（ステップＳ１０）、温度補正された電池
電圧変化値（△Ｖｔ）と電池電圧（Ｖ１ｔあるいはＶ２
ｔ）に基づき、電池容量を演算・算出し（ステップＳ１
１）、算出された電池容量に基づき適正な充電条件（充
電電圧や充電電流等）を設定し（ステップＳ１２）、適
正な充電条件で充電する（ステップＳ１３）。If it is determined in step S8 that the battery voltage change value (ΔV) is appropriate, the battery temperature is detected by the temperature sensor 14 and the battery temperature detection means 15 (step S9).
Temperature correction of the battery voltage (V1, V2) and the battery voltage change value (ΔV) is performed (step S10), and the temperature-corrected battery voltage change value (ΔVt) and the battery voltage (V1t or V2) are corrected.
t), the battery capacity is calculated / calculated (step S1).
1) Based on the calculated battery capacity, appropriate charging conditions (such as charging voltage and charging current) are set (step S12), and charging is performed under appropriate charging conditions (step S13).

【００４３】図６は、本発明の充電装置の実施の形態１
のある電池電圧（Ｖ１）時における電池電圧変化値（△
Ｖ）と電池容量の関係を示すグラフであり、図６では電
池電圧変化値が△Ｖａと△Ｖｂである二種類の電池の電
池容量の判別方法を図式的に示しており、図６のグラフ
と電池電圧変化値（△Ｖ）の交点から電池容量を知るこ
とができる。FIG. 6 shows a first embodiment of the charging device of the present invention.
Battery voltage change value (△) at a certain battery voltage (V1)
FIG. 6 is a graph showing the relationship between V) and the battery capacity. FIG. 6 schematically shows a method of determining the battery capacity of two types of batteries whose battery voltage change values are ΔVa and ΔVb. And the battery voltage change value (ΔV), the battery capacity can be known.

【００４４】尚、電池電圧（Ｖ１）が変われば電池電圧
（Ｖ１）の値に対応した特性カーブを使用する必要があ
り、また、検知時の充電電流である規定レベル１および
規定レベル２や電池温度が変わると図６の特性カーブも
異なってくる。実施の形態１において、電池電圧（Ｖ
１）と検知時の充電電流である規定レベル１および規定
レベル２と電池温度ごとに、前記図６に相当する電池容
量と電池電圧および電池電圧変化値との関係特性のデー
タおよび温度補正データを記憶手段５に記憶しておき、
演算手段６にてデータ間を直線補完する方法で電池容量
を演算・算出する。If the battery voltage (V1) changes, it is necessary to use a characteristic curve corresponding to the value of the battery voltage (V1). When the temperature changes, the characteristic curve of FIG. 6 also changes. In the first embodiment, the battery voltage (V
For each of 1) and the specified levels 1 and 2 that are the charging currents at the time of detection and the battery temperature, the data and the temperature correction data of the relational characteristics between the battery capacity, the battery voltage, and the battery voltage change value corresponding to FIG. Stored in the storage means 5,
The calculating means 6 calculates and calculates the battery capacity by a method of linearly interpolating between data.

【００４５】尚、電池容量の演算・算出は、電池の特性
式から演算・算出することも可能であり、上記で説明し
た演算・算出の方法に限定するものではない。The calculation and calculation of the battery capacity can also be calculated and calculated from the characteristic formula of the battery, and is not limited to the above-described calculation and calculation method.

【００４６】また、実施の形態１においては充電開始時
に電池容量の算出および電池容量に応じた適切な充電条
件の設定を行い、充電開始直後から適切な充電条件で充
電できる様にしたが、充電中の所定期間あるいは所定条
件時に電池容量の算出および電池容量に応じた適切な充
電条件の設定を行うことを除外するものではない。In the first embodiment, the battery capacity is calculated at the start of charging and appropriate charging conditions are set in accordance with the battery capacity, so that charging can be performed under appropriate charging conditions immediately after the start of charging. This does not exclude the calculation of the battery capacity and the setting of an appropriate charging condition according to the battery capacity during a predetermined period or under predetermined conditions.

【００４７】また、電池温度検知と温度補正は電池電圧
変化値（△Ｖ）の適否判定（ステップＳ８）後に実施し
ているが、電池電圧（Ｖ２）の検知（ステップＳ６）、
電池電圧変化値の検知（ステップＳ７）後などに実施し
てもよく、実施の形態１の方法（図３）に限定されるも
のではなく、また、電池温度検知および温度補正を行わ
なくても実用上問題にならない場合もある。Although the battery temperature detection and the temperature correction are performed after the determination of the appropriateness of the battery voltage change value (ΔV) (step S8), the battery voltage (V2) is detected (step S6).
It may be performed after the detection of the battery voltage change value (step S7) or the like, and is not limited to the method of the first embodiment (FIG. 3). It may not be a problem in practical use.

【００４８】また、実施の形態１において、充電装置１
は充電機能のみを有する装置であるが、パーソナルコン
ピューター等の機器に組み込まれた充電装置を除外する
ものではない。In the first embodiment, charging device 1
Is a device having only a charging function, but does not exclude a charging device incorporated in a device such as a personal computer.

【００４９】以下、本発明の実施の形態２について、図
２、図４、図７および図８を用いて説明する。Hereinafter, the second embodiment of the present invention will be described with reference to FIGS. 2, 4, 7 and 8.

【００５０】（実施の形態２）図２は本発明の充電装置
の実施の形態２の充電装置の構成を示すブロック図であ
り、２１は充電装置、２は電池電圧の検知手段、３は充
電装置の制御手段、４は電池電圧変化値の検知手段、５
は記憶手段、６は演算手段、７は充電制御手段、８は充
電電流制御手段、９は充電電圧制御手段、１０は電力制
御手段、２２は電池パック、１２は電池、１３は電池保
護回路、１４は温度センサー、１５は電池温度検知手
段、１６は直流電源である。(Embodiment 2) FIG. 2 is a block diagram showing a configuration of a charging apparatus according to Embodiment 2 of the present invention, wherein 21 is a charging apparatus, 2 is a battery voltage detecting means, and 3 is a charging apparatus. Control means for the apparatus; 4 means for detecting a change in battery voltage;
Is a storage means, 6 is a calculation means, 7 is a charge control means, 8 is a charge current control means, 9 is a charge voltage control means, 10 is a power control means, 22 is a battery pack, 12 is a battery, 13 is a battery protection circuit, 14 is a temperature sensor, 15 is a battery temperature detecting means, and 16 is a DC power supply.

【００５１】尚、電池パック２２は実施の形態１の電池
パック１１と基本的に同じであるが、実施の形態１の場
合と比較して電池電圧の検知端子が無くなっている。充
電装置２１も実施の形態１の充電装置１と基本的に同じ
であるが、実施の形態１の場合と比較して電池電圧の検
出を電力制御手段１０の出力電圧で代用しているところ
が異なっている。The battery pack 22 is basically the same as the battery pack 11 of the first embodiment, but has no battery voltage detection terminal as compared with the first embodiment. The charging device 21 is also basically the same as the charging device 1 of the first embodiment, except that the detection of the battery voltage is replaced by the output voltage of the power control means 10 as compared with the case of the first embodiment. ing.

【００５２】図２において、電池パック２２は、内部に
過充電や過放電や過大放電等を保護する電池保護回路１
３とリチウムイオン二次電池やニッケル・水素二次電池
等である電池１２と電池温度を検出する温度センサー１
４とからなっている。In FIG. 2, a battery pack 22 has a battery protection circuit 1 for protecting overcharge, overdischarge, overdischarge and the like inside.
3, a battery 12 such as a lithium ion secondary battery or a nickel hydrogen secondary battery, and a temperature sensor 1 for detecting the battery temperature
It consists of four.

【００５３】充電装置２１は、内部に電池電圧を検知す
る電池電圧検知手段２と電池温度を検知する電池温度検
知手段１５とによって電池状態（電池電圧、電池電圧変
化値、電池温度）を検知し、制御手段３が電池１２の容
量や状態を判断して充電制御手段７に充電条件を指示
し、この指示された充電条件（充電電圧および充電電
流）に基づき充電制御手段７がＦＥＴやトランジスター
等からなる電力制御手段１０を制御して電池１２を充電
する。The battery charger 21 detects the battery state (battery voltage, battery voltage change value, battery temperature) by the battery voltage detecting means 2 for detecting the battery voltage and the battery temperature detecting means 15 for detecting the battery temperature. The control means 3 judges the capacity and state of the battery 12 and instructs the charge control means 7 on charging conditions. Based on the instructed charging conditions (charging voltage and charging current), the charging control means 7 controls the FET, the transistor and the like. The battery 12 is charged by controlling the power control means 10 composed of

【００５４】充電装置２１に電池パック２２が装着され
ると、後述のように充電装置２１は電池容量の容量判別
を行い、判別した電池容量に基づき適正な充電条件を設
定し、設定された適正な充電条件により電池パック２１
を充電する。When the battery pack 22 is mounted on the charging device 21, the charging device 21 determines the capacity of the battery capacity as described later, sets appropriate charging conditions based on the determined battery capacity, and sets the set appropriate charging condition. Battery pack 21 depending on various charging conditions
Charge.

【００５５】図４は本発明の充電装置の実施の形態２の
制御シーケンスを示すフローチャートであり、以下に図
４のフローチャートにしたがって、電池容量の判別や充
電制御等の詳細説明を行う。FIG. 4 is a flowchart showing a control sequence according to the second embodiment of the charging apparatus of the present invention. Hereinafter, the detailed description of the determination of the battery capacity, the charging control, and the like will be made according to the flowchart of FIG.

【００５６】充電装置２１の制御手段３は電池温度検知
手段１５の検知結果を定期的にモニターしており、検知
された電池温度が適正な範囲になった場合に、電池パッ
ク２２が装着されたと判断して電池容量の判別を開始す
る（ステップＳ２１）。制御手段３は予め記憶手段５に
記憶されている電池容量の判別時の規定電流値（規定レ
ベル３）の内で、予め初回の検知時に選択する様に設定
されている規定電流値（規定レベル３ａ）を選択する
（ステップＳ２２）。The control means 3 of the charging device 21 periodically monitors the detection result of the battery temperature detection means 15, and when the detected battery temperature falls within an appropriate range, it is determined that the battery pack 22 has been mounted. Then, the determination of the battery capacity is started (step S21). The control means 3 sets a specified current value (specified level) which is previously set to be selected at the time of the first detection from the specified current values (specified level 3) at the time of determination of the battery capacity stored in the storage means 5 in advance. 3a) is selected (step S22).

【００５７】尚、前記規定レベル３ａは、充電装置２１
が充電対象とする電池の内で最小の電池容量の電池に許
容される充電電流値の最大値より小さい値であり、電池
容量の判別時に全ての充電対象とする電池に対して過大
電流で充電されることを防止し、その結果として、電池
の性能や寿命への悪影響を防止している。It should be noted that the specified level 3a is determined by the charging device 21.
Is smaller than the maximum value of the charging current value allowed for the battery with the minimum battery capacity among the batteries to be charged, and all batteries to be charged are charged with an excessive current when the battery capacity is determined. This prevents the battery performance and life from being adversely affected.

【００５８】制御手段３は充電電流制御手段８に規定レ
ベル３ａの充電電流値や充電電圧制御手段９に充電電圧
値を設定し充電を開始する（ステップＳ２３）。検知開
始時の電池電圧（Ｖ１）を電池電圧検知手段２が検知
し、検知した電池電圧（Ｖ１）を制御手段３が記憶手段
５に保存し（ステップＳ２４）、電池電圧（Ｖ１）を測
定から予め定めた規定時間（△ｔ）経過後の電池電圧
（Ｖ２）を検知し、検知した電池電圧（Ｖ２）を制御手
段３が記憶手段５に保存する（ステップＳ２５、ステッ
プＳ２６）。The control means 3 sets the charging current value of the specified level 3a in the charging current control means 8 and the charging voltage value in the charging voltage control means 9 and starts charging (step S23). The battery voltage (V1) at the start of the detection is detected by the battery voltage detecting means 2, the detected battery voltage (V1) is stored in the storage means 5 by the control means 3 (step S24), and the battery voltage (V1) is measured. The battery voltage (V2) after the lapse of a predetermined time (Δt) is detected, and the control means 3 stores the detected battery voltage (V2) in the storage means 5 (steps S25 and S26).

【００５９】制御手段３内の電池電圧変化値の検知手段
４は電池電圧変化値（△Ｖ＝Ｖ２−Ｖ１）を検知する
（ステップＳ２７）。検知された電池電圧変化値（△
Ｖ）が適正な範囲でないと電池容量の算出精度が悪化す
る為に、電池電圧変化値（△Ｖ）が適正か否かを判定す
る（ステップＳ２８）。電池電圧変化値（△Ｖ）が不適
正な場合はステッブＳ２２に戻り、検知された電池電圧
変化値（△Ｖ）と電池電圧（Ｖ１あるいはＶ２）および
検知時の規定電流値（規定レベル３）に基づき、再検知
用の規定電流値（規定レベル３）を再選択し、ステップ
Ｓ２２からステップＳ２８を電池電圧変化値（△Ｖ）が
適正になるまでくり返す。The battery voltage change detection means 4 in the control means 3 detects the battery voltage change value (ΔV = V2−V1) (step S27). The detected battery voltage change value (△
If V) is out of the proper range, the calculation accuracy of the battery capacity deteriorates, so that it is determined whether or not the battery voltage change value (ΔV) is proper (Step S28). If the battery voltage change value (△ V) is inappropriate, the process returns to step S22, where the detected battery voltage change value (△ V) and the battery voltage (V1 or V2) and the specified current value at the time of detection (specified level 3) , The specified current value for re-detection (specified level 3) is reselected, and steps S22 to S28 are repeated until the battery voltage change value (ΔV) becomes appropriate.

【００６０】尚、実施の形態２において、電池容量を２
５０ｍＡＨ〜５００ｍＡＨ，５００ｍＡＨ〜１０００ｍ
ＡＨ，１０００ｍＡＨ〜２０００ｍＡＨ，２０００ｍＡ
Ｈ〜４０００ｍＡＨに４区分し、それぞれの区分に適し
た４種類の規定電流値（規定レベル３ａ、規定レベル３
ｂ、規定レベル３ｃ、規定レベル３ｄ）を、また電池電
圧変化値（△Ｖ）の適正範囲を予め定めて記憶手段５に
記憶して使用したが、充電装置２１が充電対象とする電
池の電池容量の範囲および電池電圧変化値と電池電圧の
検知精度の向上等により、電池容量を必ずしも区分する
必要がない。In the second embodiment, the battery capacity is set to 2
50mAH-500mAH, 500mAH-1000m
AH, 1000mAH-2000mAH, 2000mA
H to 4000 mAH, and four types of specified current values (specified level 3a, specified level 3) suitable for each section.
b, the prescribed level 3c, the prescribed level 3d), and the appropriate range of the battery voltage change value (ΔV) are determined in advance and stored in the storage means 5 and used. It is not always necessary to classify the battery capacity according to the range of the capacity and the improvement of the detection accuracy of the battery voltage change value and the battery voltage.

【００６１】また、実施の形態２の場合は、実施の形態
１での電池電圧を直接検出する代わりに電力制御手段１
０の出力電圧を検知しているので、電池保護回路１３等
での電圧降下の影響を受ける。しかし、電池電圧に関し
ては前記電圧降下の温度変化相当分が誤差になるが実用
上無視しても良いレベルであり、電池電圧変化値に関し
ては電池電圧変化値（△Ｖ＝Ｖ２−Ｖ１）を検知すると
きに前記電圧降下の影響がキャンセルされる為に、電池
電圧を検出する代わりに充電端子の電圧検知で代用可能
である。尚、実施の形態２において上記の方法で電池電
圧を検知したが、実施の形態１と同様に電池電圧を直接
検知することや他の方法を除外するものではない。In the case of the second embodiment, instead of directly detecting the battery voltage in the first embodiment,
Since the output voltage of 0 is detected, it is affected by a voltage drop in the battery protection circuit 13 and the like. However, as for the battery voltage, an error corresponding to the temperature change of the voltage drop causes an error, but this level is negligible in practical use. As for the battery voltage change value, the battery voltage change value (ΔV = V2−V1) is detected. In this case, the influence of the voltage drop is canceled, so that instead of detecting the battery voltage, voltage detection at the charging terminal can be used instead. In the second embodiment, the battery voltage is detected by the above-described method. However, similar to the first embodiment, the direct detection of the battery voltage and other methods are not excluded.

【００６２】ステップ２８で電池電圧変化値（△Ｖ）が
適正であると判定されると、温度センサー１４と電池温
度検知手段１５で電池温度を検知し（ステップＳ２
９）、電池電圧（Ｖ１、Ｖ２）や電池電圧変化値（△
Ｖ）の温度補正を行い（ステップＳ３０）、温度補正さ
れた電池電圧変化値（△Ｖｔ）および電池電圧（Ｖ１ｔ
あるいはＶ２ｔ）に基づき、電池容量を演算・算出し
（ステップＳ３１）、算出された電池容量に基づき適正
な充電条件を設定し（ステップＳ３２）、適正な充電条
件で充電する（ステップＳ３３）。If it is determined in step 28 that the battery voltage change value (ΔV) is appropriate, the battery temperature is detected by the temperature sensor 14 and the battery temperature detecting means 15 (step S2).
9), battery voltage (V1, V2) and battery voltage change value (△
V) (step S30), the temperature-corrected battery voltage change value (ΔVt) and the battery voltage (V1t)
Alternatively, the battery capacity is calculated / calculated based on V2t) (step S31), an appropriate charging condition is set based on the calculated battery capacity (step S32), and the battery is charged under the appropriate charging condition (step S33).

【００６３】図７は本発明の充電装置の実施の形態２の
検知時における電池電圧と時間との関係を示すものであ
り、前記検知開始時の電池電圧（Ｖ１）と前記規定時間
（△ｔ）経過後の電池電圧（Ｖ２）および電池電圧変化
値（△Ｖ）の関係を図式的に示したものである。FIG. 7 shows the relationship between the battery voltage and time at the time of detection in the charging device according to the second embodiment of the present invention. The battery voltage (V1) at the start of the detection and the specified time (Δt) are shown. 4) schematically shows the relationship between the battery voltage (V2) and the battery voltage change value (ΔV) after the elapse.

【００６４】また、図８は、本発明の充電装置の実施の
形態２のある電池電圧（Ｖ１）時における電池電圧変化
値（△Ｖ）と電池容量の関係を示すグラフであり、電池
電圧変化値が△Ｖａと△Ｖｂの二種類の電池の電池容量
の判別方法を図式的に示しており、図８のグラフと電池
電圧変化値（△Ｖ）の交点から電池容量を知ることがで
きる。FIG. 8 is a graph showing the relationship between the battery voltage change value (ΔV) and the battery capacity at a certain battery voltage (V1) in the charging device according to the second embodiment of the present invention. 8 schematically shows a method of determining the battery capacity of two types of batteries having values of ΔVa and ΔVb. The battery capacity can be known from the intersection of the graph of FIG. 8 and the battery voltage change value (ΔV).

【００６５】尚、電池電圧（Ｖ１）が変われば電池電圧
（Ｖ１）の値に対応した特性カーブを使用する必要があ
り、また、検知時の充電電流である規定レベル３や電池
温度が変わると図８の特性カーブも異なってくる。If the battery voltage (V1) changes, it is necessary to use a characteristic curve corresponding to the value of the battery voltage (V1). Also, if the specified level 3 or the battery temperature, which is the charging current at the time of detection, changes, the battery temperature changes. The characteristic curve of FIG. 8 also differs.

【００６６】実施の形態２において、電池電圧（Ｖ１）
と検知時の充電電流である規定レベル３と電池温度ごと
に、前記図８に相当する電池容量と電池電圧および電池
電圧変化値との関係特性のデータおよび温度補正データ
を記憶手段５に記憶しておき、演算手段６にてデータ間
を直線補完する方法で電池容量を演算・算出した。In the second embodiment, the battery voltage (V1)
For each of the prescribed level 3 which is the charging current at the time of detection and the battery temperature and the battery temperature, the data of the relation characteristics between the battery capacity, the battery voltage and the battery voltage change value and the temperature correction data corresponding to FIG. In advance, the battery capacity was calculated and calculated by the calculating means 6 by a method of linearly interpolating between data.

【００６７】尚、電池容量の演算・算出は特性式から演
算・算出することも可能であり、上記で説明した演算・
算出の方法に限定するものではない。The calculation and calculation of the battery capacity can also be calculated and calculated from the characteristic equation.
The calculation method is not limited.

【００６８】また、実施の形態２においては充電開始時
に電池容量の算出および電池容量に応じた適切な充電条
件の設定を行い、充電開始直後から適切な充電条件で充
電できる様にしたが、充電中の所定期間あるいは所定条
件時に電池容量の算出および電池容量に応じた適切な充
電条件の設定を行うことを除外するものではない。In the second embodiment, the battery capacity is calculated at the start of charging and appropriate charging conditions are set in accordance with the battery capacity so that charging can be performed under appropriate charging conditions immediately after the start of charging. This does not exclude the calculation of the battery capacity and the setting of an appropriate charging condition according to the battery capacity during a predetermined period or under predetermined conditions.

【００６９】また、電池温度検知と温度補正は電池電圧
変化値（△Ｖ）の適否判定（ステップＳ２８）後に実施
しているが、電池電圧（Ｖ２）の検知（ステップＳ２
６）や電池電圧変化値の検知（ステップＳ２７）後など
に実施してもよく、実施の形態２の手順に限定されるも
のではなく、また、電池温度検知および温度補正を行わ
なくても実用上問題にならない場合もある。Although the battery temperature detection and the temperature correction are performed after the determination of the appropriateness of the battery voltage change value (ΔV) (step S28), the battery voltage (V2) is detected (step S2).
6) or after detecting the battery voltage change value (step S27), and is not limited to the procedure of the second embodiment. In some cases, this is not a problem.

【００７０】また、実施の形態２において、充電装置２
１は充電機能のみを有する装置であるが、パーソナルコ
ンピューター等の機器に組み込まれた充電装置を除外す
るものではない。In the second embodiment, charging device 2
1 is a device having only a charging function, but does not exclude a charging device incorporated in a device such as a personal computer.

【００７１】ところで、実施の形態２では充電電流を規
定レベル３にて充電し、規定時間経過の前後の電池電圧
の変化値を電池電圧変化値としたが、電池電圧の変化量
や変化率が規定量になるに要する時間（ｔ）を電池電圧
変化値（△Ｖ＝ｆ（ｔ））とすることによっても実施の
形態２と同様に実施可能である。尚、前記電池電圧の変
化量や変化率の規定量は電池電圧や電池温度等の条件に
より定まる値でよく、一定値である必要はない。In the second embodiment, the charging current is charged at the specified level 3 and the change in the battery voltage before and after the lapse of the specified time is defined as the battery voltage change value. The embodiment can be implemented in the same manner as in Embodiment 2 by setting the time (t) required for reaching the specified amount to the battery voltage change value (ΔV = f (t)). The specified amount of the change in the battery voltage or the change rate may be a value determined by conditions such as the battery voltage and the battery temperature, and need not be a constant value.

【００７２】[0072]

【発明の効果】以上のように本発明の充電装置によれ
ば、所定の条件での電池電圧および電池電圧変化値を検
知し、検知した電池電圧と電池電圧変化値および充電装
置の記憶装置に記憶されているデータおよび演算方法に
基づいて電池容量を算出し、算出した電池容量に応じた
適切な充電条件で二次電池を充電する。As described above, according to the battery charger of the present invention, the battery voltage and the battery voltage change value under predetermined conditions are detected, and the detected battery voltage, the battery voltage change value and the storage device of the battery charger are stored. The battery capacity is calculated based on the stored data and the calculation method, and the secondary battery is charged under appropriate charging conditions according to the calculated battery capacity.

【００７３】この構成により、充電装置および電池パッ
クに電池容量の判別機構や充電装置と電池パック間の通
信手段を設ける必要がなくなり、電池容量の判別機構や
通信手段に基づく誤判別が無くなり、電池容量の異なる
複数種類の電池を適切に充電することができ、更に経時
変化や劣化等により電池容量が変化しても、現時点の電
池容量に応じた適切な充電条件で充電することができ
る。また充電装置および電池パックを小型にでき、また
経済的に提供することができる。According to this configuration, it is not necessary to provide a battery capacity discriminating mechanism and a communication means between the charging device and the battery pack in the charging device and the battery pack, and erroneous discrimination based on the battery capacity discriminating mechanism and the communication means is eliminated. A plurality of types of batteries having different capacities can be appropriately charged, and even if the battery capacity changes due to aging or deterioration, charging can be performed under appropriate charging conditions according to the current battery capacity. Further, the charging device and the battery pack can be reduced in size and can be provided economically.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の充電装置の実施の形態１のブロック図FIG. 1 is a block diagram of a charging device according to a first embodiment of the present invention.

【図２】本発明の充電装置の実施の形態２のブロック図FIG. 2 is a block diagram of a charging device according to a second embodiment of the present invention.

【図３】本発明の充電装置の実施の形態１の制御シーケ
ンスのフローチャートFIG. 3 is a flowchart of a control sequence according to the first embodiment of the charging device of the present invention.

【図４】本発明の充電装置の実施の形態２の制御シーケ
ンスのフローチャートFIG. 4 is a flowchart of a control sequence according to a second embodiment of the charging device of the present invention.

【図５】本発明の充電装置の実施の形態１の電池電圧検
知時における充電電流の切り替え動作に伴う電池電圧の
変化を図式的に示したグラフFIG. 5 is a graph schematically showing a change in a battery voltage accompanying a switching operation of a charging current when a battery voltage is detected according to the first embodiment of the charging device of the present invention.

【図６】本発明の充電装置の実施の形態１のある電池電
圧時における電池電圧変化値と電池容量の関係を示すグ
ラフFIG. 6 is a graph showing a relationship between a battery voltage change value and a battery capacity at a certain battery voltage according to the first embodiment of the charging device of the present invention.

【図７】本発明の充電装置の実施の形態２の充電電流レ
ベル３における電池電圧（Ｖ１）と規定時間（△ｔ）経
過後の電池電圧（Ｖ２）の関係を図式的に示したグラフFIG. 7 is a graph schematically showing a relationship between a battery voltage (V1) and a battery voltage (V2) after a lapse of a specified time (Δt) at a charging current level 3 in the charging device according to the second embodiment of the present invention.

【図８】本発明の充電装置の実施の形態２のある電池電
圧時における電池電圧変化値と電池容量の関係を示を示
すグラフFIG. 8 is a graph showing a relationship between a battery voltage change value and a battery capacity at a certain battery voltage according to a second embodiment of the charging device of the present invention.

【図９】従来の充電装置のブロック図FIG. 9 is a block diagram of a conventional charging device.

【符号の説明】[Explanation of symbols]

１ 充電装置 ２ 電池電圧の検知手段 ３ 充電装置の制御手段 ４ 電池電圧変化値の検知手段 ５ 記憶手段 ６ 演算手段 ７ 充電制御手段 ８ 充電電流制御手段 ９ 充電電圧制御手段 １０ 電力制御手段 １１ 電池パック １２ 電池 １３ 電池保護回路 １４ 温度センサー １５ 電池温度検知手段 １６ 直流電源 １７ 磁性体 １８ 磁気検出手段 ２１ 充電装置 ２２ 電池パック ３１ 充電装置 ３２ 電池パック ３３ 充電装置の制御手段 ３６ 演算手段 DESCRIPTION OF SYMBOLS 1 Charger 2 Battery voltage detection means 3 Charger control means 4 Battery voltage change value detection means 5 Storage means 6 Calculation means 7 Charge control means 8 Charge current control means 9 Charge voltage control means 10 Power control means 11 Battery pack DESCRIPTION OF SYMBOLS 12 Battery 13 Battery protection circuit 14 Temperature sensor 15 Battery temperature detecting means 16 DC power supply 17 Magnetic body 18 Magnetic detecting means 21 Charging device 22 Battery pack 31 Charging device 32 Battery pack 33 Control device of charging device 36 Calculation device

Claims (8)

【特許請求の範囲】[Claims] 【請求項１】電池電圧の検知手段と、電池電圧変化値の
検知手段と、電池容量と前記電池電圧および前記電池電
圧変化値との関係特性のデータおよび電池容量の演算方
法を記憶する記憶装置と、前記電池容量を演算する演算
装置と、充電電流値を制御する充電電流制御手段とを有
する充電装置において、前記電池電圧と前記電池電圧変
化値および前記記憶装置に記憶されている前記データお
よび前記演算方法に基づいて前記電池容量を算出し、算
出した前記電池容量に応じた適切な充電条件で前記電池
を充電するように制御する制御手段を備えたことを特徴
とする充電装置。1. A storage device for storing battery voltage detecting means, battery voltage change value detecting means, and data on the relationship between battery capacity and the battery voltage and the battery voltage change value and a method for calculating the battery capacity. And a computing device that computes the battery capacity, and a charging current control unit that controls a charging current value, wherein the battery voltage and the battery voltage change value and the data stored in the storage device and A charging apparatus comprising: a control unit that calculates the battery capacity based on the calculation method, and controls the battery to be charged under appropriate charging conditions according to the calculated battery capacity. 【請求項２】電池の充電開始時に前記電池容量の算出お
よび前記電池容量に応じた適切な充電条件の設定を行う
制御手段を有することを特徴とする請求項１に記載の充
電装置。2. The charging apparatus according to claim 1, further comprising control means for calculating the battery capacity and setting appropriate charging conditions according to the battery capacity at the start of charging of the battery. 【請求項３】前記電池電圧および前記電池電圧変化値の
検知時に、充電電流を規定レベル１から規定レベル２に
切り替えた場合の電池電圧の変化値を前記電池電圧変化
値としたことを特徴とする請求項１または請求項２に記
載の充電装置。3. A battery voltage change value when a charging current is switched from a specified level 1 to a specified level 2 upon detection of the battery voltage and the battery voltage change value. The charging device according to claim 1 or 2, wherein 【請求項４】前記充電電流の規定レベル１あるいは規定
レベル２を未充電状態としたことを特徴とする請求項３
に記載の充電装置。4. The battery according to claim 3, wherein a prescribed level 1 or a prescribed level 2 of said charging current is set in an uncharged state.
A charging device according to claim 1. 【請求項５】充電電流を規定レベル３にて充電し、規定
時間経過の前後の電池電圧の変化値を前記電池電圧変化
値としたことを特徴とする請求項１または請求項２に記
載の充電装置。5. The battery according to claim 1, wherein a charging current is charged at a specified level of 3, and a change value of the battery voltage before and after a lapse of a specified time is defined as the battery voltage change value. Charging device. 【請求項６】充電電流を規定レベル３にて充電し、電池
電圧の変化量や変化率が規定量になるに要する時間を前
記電池電圧変化値としたことを特徴とする請求項１また
は請求項２に記載の充電装置。6. A battery according to claim 1, wherein the charging current is charged at a specified level of 3, and a time required for a change amount and a change rate of the battery voltage to reach a specified amount is defined as the battery voltage change value. Item 3. The charging device according to Item 2. 【請求項７】前記電池電圧と前記電池電圧変化値の初回
の検知において、前記の初回の検知時に流す充電電流を
充電装置が充電対象とする電池の内で最小の電池容量の
電池に許容される充電電流値の最大値より小さくしたこ
とを特徴とする請求項１、請求項２、請求項３、請求項
４、請求項５または請求項６に記載の充電装置。7. In the first detection of the battery voltage and the battery voltage change value, a charging current flowing at the time of the first detection is allowed for a battery having a minimum battery capacity among batteries to be charged by a charging apparatus. 7. The charging device according to claim 1, wherein the charging current value is smaller than a maximum value of the charging current value. 【請求項８】電池温度を検知する電池温度検知手段によ
り前記電池温度を検知し、検知された前記電池温度に基
づき前記電池電圧と前記電池電圧変化値あるいは前記電
池容量あるいは前記充電条件を温度補正することを特徴
とする請求項１、請求項２、請求項３、請求項４、請求
項５、請求項６または請求項７に記載の充電装置。8. A battery temperature detecting means for detecting a battery temperature, wherein the battery temperature is detected, and the battery voltage and the battery voltage change value, the battery capacity or the charging condition are corrected based on the detected battery temperature. The charging device according to claim 1, 2, 3, 4, 5, 5, 6, or 7, wherein the charging is performed.
JP16012698A 1998-06-09 1998-06-09 Charging equipment Pending JPH11355969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16012698A JPH11355969A (en) 1998-06-09 1998-06-09 Charging equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16012698A JPH11355969A (en) 1998-06-09 1998-06-09 Charging equipment

Publications (1)

Publication Number Publication Date
JPH11355969A true JPH11355969A (en) 1999-12-24

Family

ID=15708440

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16012698A Pending JPH11355969A (en) 1998-06-09 1998-06-09 Charging equipment

Country Status (1)

Country Link
JP (1) JPH11355969A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102437625A (en) * 2011-12-23 2012-05-02 台达电子企业管理（上海）有限公司 Charger
JP2013192323A (en) * 2012-03-13 2013-09-26 Hitachi Koki Co Ltd Charger
JP2016125882A (en) * 2014-12-26 2016-07-11 株式会社リコー Charged state detecting apparatus, charged state detecting method, and moving body
CN112994178A (en) * 2021-04-15 2021-06-18 深圳市伊爱高新技术开发有限公司 Self-adaptive charging method of Beidou positioning terminal

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102437625A (en) * 2011-12-23 2012-05-02 台达电子企业管理（上海）有限公司 Charger
JP2013192323A (en) * 2012-03-13 2013-09-26 Hitachi Koki Co Ltd Charger
JP2016125882A (en) * 2014-12-26 2016-07-11 株式会社リコー Charged state detecting apparatus, charged state detecting method, and moving body
CN112994178A (en) * 2021-04-15 2021-06-18 深圳市伊爱高新技术开发有限公司 Self-adaptive charging method of Beidou positioning terminal
CN112994178B (en) * 2021-04-15 2024-05-31 深圳市伊爱高新技术开发有限公司 Self-adaptive charging method for Beidou positioning terminal

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