JPH1021967A - Nickel-hydrogen secondary battery pack - Google Patents
Nickel-hydrogen secondary battery packInfo
- Publication number
- JPH1021967A JPH1021967A JP8172701A JP17270196A JPH1021967A JP H1021967 A JPH1021967 A JP H1021967A JP 8172701 A JP8172701 A JP 8172701A JP 17270196 A JP17270196 A JP 17270196A JP H1021967 A JPH1021967 A JP H1021967A
- Authority
- JP
- Japan
- Prior art keywords
- charging
- nickel
- secondary battery
- battery pack
- hydrogen secondary
- 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.)
- Withdrawn
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はニッケル・水素二次
電池パックに係り、さらに詳しくはニッケル・カドミウ
ム二次電池用の充電器よっても十分に、過度の温度上昇
なく所要の充電を行うことができるニッケル・水素二次
電池パックに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nickel-hydrogen rechargeable battery pack, and more particularly to a rechargeable battery for a nickel-cadmium rechargeable battery that can perform required charging without excessive temperature rise. The present invention relates to a nickel-hydrogen secondary battery pack that can be used.
【０００２】[0002]
【従来の技術】ニッケル・水素二次電池セルあるいはニ
ッケル・カドミウム二次電池セルなどに代表される二次
電池セルは、単独もしくは複数個をパック化し、充電に
よる電力の貯蔵、この貯蔵した電力を負荷の駆動源（放
電）とする繰り返し動作が可能な電源として、たとえば
携帯用電話機や携帯型撮像機など各種の機器システムに
組み込まれて実用されている。そして、二次電池セルは
繰り返しの充電および放電が主要な機能であり、また、
効率および安全性の点から充電の終止電圧，放電の終止
電圧をそれぞれ限界とし、この限界範囲内の電圧で充電
や放電を行っている。2. Description of the Related Art A secondary battery cell such as a nickel-hydrogen secondary battery cell or a nickel-cadmium secondary battery cell is used alone or in a plurality of packs to store power by charging, and store the stored power. As a power source that can be repeatedly operated as a drive source (discharge) of a load, it has been put into practical use by being incorporated in various device systems such as a portable telephone and a portable image pickup device. And the rechargeable battery cell is a main function of repeated charging and discharging,
From the viewpoints of efficiency and safety, the end voltage of charging and the end voltage of discharging are set as limits, respectively, and charging and discharging are performed at voltages within these limit ranges.
【０００３】この種の二次電池セルや二次電池パック
を、信頼性の高い電源として利用するに当たっては、常
に、適正な充電制御の充電が行われることが前提となる
ため、充電過程で、二次電池パックの充電電圧を検出・
検知し、その推移によって、充電終了時点を決めてい
る。たとえば、ニッケル・カドミウム二次電池パックの
充電においては、充電の進行に伴って電池電圧が徐々に
上昇し、満充電に近い状態になると電池電圧が急上昇
し、その後に下降（−△V ）する。したがって、単位時
間当たりの電圧上昇率（電圧微分値）の変化から充電の
末期と判断し、その後、電池電圧が下降（−△V ）する
推移から充電終了時点を決めている。[0003] In order to use this kind of secondary battery cell or secondary battery pack as a highly reliable power source, it is always premised that proper charging control charging is performed. Detects charging voltage of secondary battery pack
The end point of charging is determined based on the detection and the transition. For example, in charging a nickel-cadmium secondary battery pack, the battery voltage gradually increases as the charging progresses, and when the battery is almost fully charged, the battery voltage sharply increases and thereafter drops (-△ V). . Therefore, the end of charging is determined from the change in the voltage rise rate (voltage differential value) per unit time, and the end point of charging is determined from the transition in which the battery voltage decreases (−ΔV).
【０００４】[0004]
【発明が解決しようとする課題】従来から、電池電圧を
検出し電池電圧の急上昇後の下降（−△V ）から充電終
了時点を検出する手段は、ニッケル・カドミウム二次電
池セルもしくはその電池パックで一般用いられている。
しかしながら、ニッケル・水素二次電池セルもしくはそ
の電池パックを対象とした場合は、急上昇後の下降（−
△V ）が、ニッケル・カドミウム二次電池セルの場合の
数分の１であり、一般的に、ニッケル・カドミウム二次
電池用の充電器をそのまま適用すると、充電終了を検知
できたとしも、電池セルの過充電となって著しく電池寿
命に影響を及ぼす。つまり、ニッケル・水素二次電池用
に、専用の充電器を用意する必要がある。Conventionally, means for detecting the battery voltage and detecting the end point of charging from the drop (-.DELTA.V) after the rapid rise of the battery voltage has been known as a nickel-cadmium secondary battery cell or its battery pack. Commonly used in
However, in the case of nickel-hydrogen secondary battery cells or their battery packs, the drop after the sudden rise (-
ΔV) is a fraction of the case of a nickel-cadmium secondary battery cell. In general, when a charger for a nickel-cadmium secondary battery is applied as it is, even if the end of charging can be detected, Overcharging of the battery cell significantly affects battery life. That is, it is necessary to prepare a dedicated charger for the nickel-metal hydride secondary battery.
【０００５】一方、諸事情からニッケル・カドミウム二
次電池セルをニッケル水素電池セル代替したいという要
求が増加している。On the other hand, there is an increasing demand for replacing nickel-cadmium secondary battery cells with nickel-metal hydride battery cells due to various circumstances.
【０００６】本発明は上記事情に対処してなされたもの
で、従来、ニッケル・カドミウム二次電池パックの充電
に使用されていた充電電圧検出手段を備えた充電器で所
要の充電を容易に行うことができるニッケル・水素二次
電池パックの提供を目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a required charging is easily performed by a charger having a charging voltage detecting means conventionally used for charging a nickel-cadmium secondary battery pack. It is an object of the present invention to provide a nickel-hydrogen secondary battery pack capable of performing the above-described operations.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明は、外装
体と、前記外装体内に収納・装着された複数個のニッケ
ル・水素二次電池セルと、前記ニッケル・水素二次電池
セル間を電気的に接続する電気回路と、前記電気回路に
一端がそれぞれ接続し外装体外に導出されて充電電力を
供給・充電する一対の充電端子と、前記充電端子側の電
気回路へ直列に介挿された抵抗器と、前記抵抗器とは並
列に接続されたサーモスイッチとを有し、 前記サーモ
スイッチの開，閉によって充電回路の抵抗値を可変する
ことを特徴とするニッケル・水素二次電池パックであ
る。According to a first aspect of the present invention, there is provided an exterior body, a plurality of nickel-hydrogen secondary battery cells housed and mounted in the exterior body, and a space between the nickel-hydrogen secondary battery cells. An electric circuit for electrically connecting the electric circuit, a pair of charging terminals each having one end connected to the electric circuit and led out of the exterior body to supply and charge the charging power, and inserted in series into the electric circuit on the charging terminal side. Nickel-hydrogen rechargeable battery, comprising: a connected resistor; and a thermoswitch connected in parallel with the resistor, wherein a resistance value of a charging circuit is varied by opening and closing the thermoswitch. It is a pack.
【０００８】請求項２の発明は、抵抗器がダイオードで
あることを特徴とする請求項１記載のニッケル・水素二
次電池パックである。According to a second aspect of the present invention, there is provided the nickel-hydrogen secondary battery pack according to the first aspect, wherein the resistor is a diode.
【０００９】請求項３の発明は、請求項１もしくは請求
項２記載のニッケル・水素二次電池パックにおいて、サ
ーモスイッチ側回路に第２の抵抗器を直列に介挿したこ
とを特徴とする。According to a third aspect of the present invention, in the nickel-hydrogen secondary battery pack according to the first or second aspect, a second resistor is inserted in series in the thermoswitch side circuit.
【００１０】すなわち、本発明は、充電端子と電池セル
群の端子との間に、充電用抵抗器およびサーモスイッチ
が並列に成るように介挿したもので、充電開始時には、
抵抗器を介して通電し、この抵抗器の電圧降下に対応し
た電圧を上乗せして充電する。そして、電池温度の上昇
によるサーモスイッチの閉路化によって、充電電流をサ
ーモスイッチ側へも流し、前記抵抗器の電圧降下に対応
した電圧分を低減し、結果的に疑似−△V を創出して、
充電終了時点を検出できるようにしたものである。 本
発明に係るニッケル・水素二次電池パックは、一般に広
く用いられている手段で複数個のニッケル・水素二次電
池を一パック化したもので、その接続形態は直列型，並
列型，直列−並列型のいずれでもよく、また、充電用端
子，放電用端子を使い分けもしくは兼用してもよい。図
１，図２，図３ (a)，図３ (b)は、充放電端子が別々の
場合である。充電回路側で放電端子を兼用する型を採る
場合は、図４ (a)， (b)， (c)， (d)に例示するように
放電用ダイオードを介挿する。That is, according to the present invention, a charging resistor and a thermoswitch are interposed between a charging terminal and a terminal of a battery cell group in parallel.
Electricity is supplied through a resistor, and a voltage corresponding to the voltage drop of the resistor is added to charge. Then, by closing the thermoswitch due to an increase in the battery temperature, the charging current also flows to the thermoswitch side, reducing the voltage corresponding to the voltage drop of the resistor, and consequently creating pseudo- △ V. ,
The end point of the charging can be detected. The nickel-hydrogen secondary battery pack according to the present invention is obtained by integrating a plurality of nickel-hydrogen secondary batteries into one pack by means that is generally widely used, and the connection form thereof is a series type, a parallel type, or a serial type. Any of the parallel type may be used, and the charging terminal and the discharging terminal may be selectively used or may be shared. FIGS. 1, 2, 3 (a) and 3 (b) show cases where the charging and discharging terminals are separate. When a type that also serves as a discharge terminal is used on the charging circuit side, a discharge diode is inserted as illustrated in FIGS. 4 (a), (b), (c), and (d).
【００１１】なお、サーモスイッチは、たとえば50〜60
℃程度に温度が上昇したときに閉じ、かつ前記充電用抵
抗器またはダイオードと分流して充電電流を流せるもの
であればよい。ここで、このサーモスイッチ側に、第２
の抵抗器を直列に介挿しておくことより、疑似−△V 値
を調整できる。なお、各図において、１はニッケル・水
素二次電池セル、2a，2bは接続導電体片、３は充放電端
子、3aは充電用端子、3bは放電用端子、４は充電用回路
のダイオード、４′は充電用回路の抵抗器、５は充電用
回路のサーモスイッチ、６は放電用ダイオード、７は第
２の抵抗器をそれぞれ示す。The thermoswitch is, for example, 50-60
Any material may be used as long as it closes when the temperature rises to about ° C and can shunt the charging resistor or diode to supply a charging current. Here, the second side of the thermoswitch is
The pseudo-ΔV value can be adjusted by inserting the resistors in series. In each figure, 1 is a nickel-hydrogen secondary battery cell, 2a and 2b are connecting conductor pieces, 3 is a charging / discharging terminal, 3a is a charging terminal, 3b is a discharging terminal, and 4 is a diode of a charging circuit. Numeral 4 'denotes a resistor of the charging circuit, numeral 5 denotes a thermoswitch of the charging circuit, numeral 6 denotes a discharging diode, and numeral 7 denotes a second resistor.
【００１２】[0012]
【発明の実施の形態】以下図１，図２，図３ (a)，
(b)，図４ (a)， (b)， (c)， (d)および図５を参照し
て実施の形態を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1, FIG. 2, FIG.
The embodiment will be described with reference to (b), FIGS. 4 (a), (b), (c), (d) and FIG.
【００１３】図５は、実施例のニッケル・水素二次電池
パックの要部構成を示す斜視図、図４ (a)は、図５に図
示したニッケル・水素二次電池パックの回路図である。
図５において、１はニッケル・水素二次電池セル、2a，
2bは前記ニッケル・水素二次電池セル１を直列に接続す
る一方、＋充電回路側および−充電回路側を形成する導
電体（たとえばニッケル箔片）である。また、３は充放
電用端子、４は＋充電回路側2aに介挿された抵抗器（ま
たはダイオード素子）、５は前記抵抗器４と＋充電回路
側2aに並列に介挿されたサーモスイッチ、６は前記抵抗
器４およびサーモスイッチ５と＋充電回路側2aに並列に
介挿された放電用のダイオード素子である。ここで、放
電用ダイオード６は、前記抵抗器４（ダイオード素子）
に対して逆向きに接続されている。つまり、この実施例
のニッケル・水素二次電池パックは、図４ (a)に図示す
る電気回路を形成した構成を採っている。FIG. 5 is a perspective view showing the essential configuration of the nickel-hydrogen secondary battery pack of the embodiment, and FIG. 4 (a) is a circuit diagram of the nickel-hydrogen secondary battery pack shown in FIG. .
In FIG. 5, 1 is a nickel-hydrogen secondary battery cell, 2a,
Reference numeral 2b denotes a conductor (for example, a nickel foil piece) that connects the nickel-hydrogen secondary battery cells 1 in series and forms the + charging circuit side and the −charging circuit side. Reference numeral 3 denotes a charge / discharge terminal, 4 denotes a resistor (or a diode element) inserted on the + charge circuit side 2a, and 5 denotes a thermoswitch inserted in parallel with the resistor 4 and the + charge circuit side 2a. , 6 are discharge diode elements inserted in parallel between the resistor 4 and the thermoswitch 5 and the + charge circuit side 2a. Here, the discharging diode 6 is connected to the resistor 4 (diode element).
Connected in the opposite direction. That is, the nickel-hydrogen secondary battery pack of this embodiment has a configuration in which the electric circuit shown in FIG. 4A is formed.
【００１４】次に、従来の−△V 変化によって充電を制
御する手段付き充電器で、前記構成のニッケル・水素二
次電池パックに対して充電する例を説明する。Next, an example of charging a nickel-hydrogen secondary battery pack having the above-described configuration using a conventional charger with a means for controlling charging by -ΔV change will be described.
【００１５】先ず、充放電用端子３を充電器（図示省
略）に接続し、たとえば1.2Aの定電流を充放電用端子３
（＋），（−）に印加する。ここでの印加電圧は、ダイ
オード素子４の電圧降下分を考慮して、所要の充電電圧
6.2Vに対して0.5V程度過剰に設定する。この状態で、定
電流充電を進めると、電池電圧が徐々に上昇して、満充
電状態に近付くに従って、電池電圧が急激に上昇する傾
向を呈する。First, the charging / discharging terminal 3 is connected to a charger (not shown), and a constant current of, for example, 1.2 A is applied to the charging / discharging terminal 3.
Apply to (+) and (-). The applied voltage is a required charging voltage in consideration of the voltage drop of the diode element 4.
Set to about 0.5V over 6.2V. In this state, when the constant current charging is performed, the battery voltage gradually increases, and the battery voltage tends to rapidly increase as it approaches the fully charged state.
【００１６】一方、ニッケル・水素二次電池パックを形
成している各ニッケル・水素二次電池１が急激に温度上
昇し、この急激な温度上昇によって、サーモスイッチ５
が閉じて、定電流充電流がダイオード素子４側およびサ
ーモスイッチ５側に分流化される。つまり、当初、ダイ
オード素子４側回路に印加されていた電圧が、サーモス
イッチ５側回路に分流された分だけ低減化され、この低
減化された電圧が満充電後の電池電圧低減化分（疑似−
△V ）として創出される。そして、創出された疑似−△
V によって、ニッケル・水素二次電池パックの定電流充
電の終了時点が決められる。On the other hand, the temperature of each nickel-metal hydride secondary battery 1 forming the nickel-metal hydride secondary battery pack sharply rises, and the thermoswitch 5
Is closed, and the constant current charging flow is divided into the diode element 4 side and the thermoswitch 5 side. That is, the voltage initially applied to the circuit on the diode element 4 side is reduced by the amount shunted to the circuit on the thermoswitch 5 side, and the reduced voltage is reduced by the battery voltage after full charge (pseudo-pseudo). −
ΔV). And the created pseudo- △
V determines the end point of the constant current charging of the nickel-metal hydride secondary battery pack.
【００１７】このように、この発明に係るニッケル・水
素二次電池パックは、その定電流充電過程における電池
温度の上昇を利用して、過度な電池温度を上昇させない
ようにする。換言すると、ニッケル・水素二次電池パッ
クは、従来、ニッケル・カドミウム二次電池パックの充
電に使用されていた−△V 変化によって、充電を制御す
る手段付き充電器で充電した場合でも、容易に、過度な
温度上昇がなく満充電状態とすることができるので、ニ
ッケル・水素二次電池パックのサイクル特性に悪影響を
与えないようにできる。As described above, the nickel-hydrogen secondary battery pack according to the present invention prevents the battery temperature from excessively increasing by utilizing the increase in the battery temperature during the constant current charging process. In other words, the nickel-hydrogen rechargeable battery pack can easily be charged even if it is charged by the charger with the means for controlling the charge by the-△ V change, which has been conventionally used for charging the nickel-cadmium rechargeable battery pack. Since the battery can be fully charged without excessive temperature rise, the cycle characteristics of the nickel-hydrogen secondary battery pack can be prevented from being adversely affected.
【００１８】上記では、充放電用端子３を共用とした構
造のニッケル・水素二次電池パックを例示したが、図
１，図２，図３ (a)〜 (b)に示すごとく、充放電用端子
３を3a，3bに分離した構成を採ることもできる。In the above description, a nickel-hydrogen secondary battery pack having a structure in which the charge / discharge terminal 3 is shared is illustrated, but as shown in FIGS. 1, 2 and 3 (a) and (b), the charge / discharge It is also possible to adopt a configuration in which the terminal 3 is separated into 3a and 3b.
【００１９】なお、この発明に係るニッケル・水素二次
電池パックは、上記例示の構成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
ることができる。たとえば、ニッケル・水素二次電池パ
ックは、少なくとも２個のニッケル・水素二次電池を素
子とするならば、その個数は特に限定されないし、ま
た、それらニッケル・水素二次電池の接続も、並列もし
くは並列−直列の組み合わせであってもよい。The nickel-hydrogen secondary battery pack according to the present invention is not limited to the above-described configuration, and can take various modifications without departing from the spirit of the invention. For example, if a nickel-hydrogen secondary battery pack has at least two nickel-hydrogen secondary batteries as elements, the number of the nickel-hydrogen secondary batteries is not particularly limited. Alternatively, a parallel-series combination may be used.
【００２０】[0020]
【発明の効果】上記説明から分かるように、発明によれ
ば、ニッケル・水素二次電池パックは、ニッケル・カド
ミウム二次電池パックの充電に広く使用されていた−△
V 方式の手段付き充電器で、容易に所要の充電を行うこ
とができる。すなわち、ニッケル・水素二次電池パック
専用型の充電器を用いずに、ニッケル・カドミウム二次
電池パック用充電器と併用または流用することで、経済
的利点をもたらすといえる。As can be seen from the above description, according to the present invention, the nickel-hydrogen secondary battery pack has been widely used for charging nickel-cadmium secondary battery packs.
The required charging can be easily performed with a V-type charger with means. That is, it can be said that an economical advantage is brought about by using or diverting a charger for a nickel-cadmium secondary battery pack without using a charger dedicated to a nickel-hydrogen secondary battery pack.
【図１】実施例のニッケル・水素二次電池パックの回路
図。FIG. 1 is a circuit diagram of a nickel-hydrogen secondary battery pack of an embodiment.
【図２】他の実施例の回路図。FIG. 2 is a circuit diagram of another embodiment.
【図３】(a)， (b)は他の互いに異なる実施例の回路
図。FIGS. 3A and 3B are circuit diagrams of other different embodiments.
【図４】(a)， (b)， (c)， (d)は互いに異なる他の実
施例の回路図。4 (a), (b), (c), and (d) are circuit diagrams of another embodiment different from each other.
【図５】実施例のニッケル・水素二次電池パックの要部
構成を示す斜視図。FIG. 5 is a perspective view showing a configuration of a main part of the nickel-hydrogen secondary battery pack of the embodiment.
１……ニッケル・水素二次電池セル 2a，2b……接続導電体片 ３……充放電端子 3a……充電用端子 3b……放電用端子 ４……充電用回路のダイオード ４′……充電用回路の抵抗器 ５……充電用回路のサーモスイッチ ６……放電用ダイオード ７……第２の抵抗器 1 Nickel-hydrogen secondary battery cell 2a, 2b Connection conductor piece 3 Charging / discharging terminal 3a Charging terminal 3b Discharging terminal 4 Diode of charging circuit 4 'Charging Resistor of circuit for use 5 Thermo switch of circuit for charge 6 Diode for discharge 7 Second resistor
Claims (3)
れた複数個のニッケル・水素二次電池セルと、前記ニッ
ケル・水素二次電池セル間を電気的に接続する電気回路
と、前記電気回路に一端がそれぞれ接続し外装体外に導
出されて充電電力を供給・充電する一対の充電端子と、
前記充電端子側の電気回路へ直列に介挿された抵抗器
と、前記抵抗器とは並列に接続されたサーモスイッチと
を有し、 前記サーモスイッチの開，閉によって充電回路の抵抗値
を可変することを特徴とするニッケル・水素二次電池パ
ック。An exterior circuit; a plurality of nickel-hydrogen secondary battery cells housed and mounted in the exterior body; an electric circuit for electrically connecting the nickel-hydrogen secondary battery cells; A pair of charging terminals, each of which has one end connected to the electric circuit and is led out of the exterior body to supply and charge the charging power,
A resistor inserted in series with the electric circuit on the charging terminal side; and a thermoswitch connected in parallel with the resistor, wherein a resistance value of the charging circuit is varied by opening and closing the thermoswitch. A nickel-hydrogen secondary battery pack.
する請求項１記載のニッケル・水素二次電池パック。2. The nickel-hydrogen secondary battery pack according to claim 1, wherein the resistor is a diode.
直列に介挿したことを特徴とする請求項１もしくは請求
項２記載のニッケル・水素二次電池パック。3. The nickel-metal hydride secondary battery pack according to claim 1, wherein a second resistor is inserted in series in the thermoswitch-side circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8172701A JPH1021967A (en) | 1996-07-02 | 1996-07-02 | Nickel-hydrogen secondary battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8172701A JPH1021967A (en) | 1996-07-02 | 1996-07-02 | Nickel-hydrogen secondary battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1021967A true JPH1021967A (en) | 1998-01-23 |
Family
ID=15946751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8172701A Withdrawn JPH1021967A (en) | 1996-07-02 | 1996-07-02 | Nickel-hydrogen secondary battery pack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1021967A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1263110A2 (en) | 2001-05-28 | 2002-12-04 | Matsushita Electric Industrial Co., Ltd. | Battery pack system |
| JP2003109673A (en) * | 2001-09-28 | 2003-04-11 | Nec Mobile Energy Kk | Battery pack with warning function |
| WO2011116887A1 (en) * | 2010-03-25 | 2011-09-29 | Diehl Aerospace Gmbh | Rechargeable battery unit and charging method |
-
1996
- 1996-07-02 JP JP8172701A patent/JPH1021967A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1263110A2 (en) | 2001-05-28 | 2002-12-04 | Matsushita Electric Industrial Co., Ltd. | Battery pack system |
| JP2003109673A (en) * | 2001-09-28 | 2003-04-11 | Nec Mobile Energy Kk | Battery pack with warning function |
| WO2011116887A1 (en) * | 2010-03-25 | 2011-09-29 | Diehl Aerospace Gmbh | Rechargeable battery unit and charging method |
| US9923248B2 (en) | 2010-03-25 | 2018-03-20 | Diehl Aerospace Gmbh | Rechargeable battery unit and charging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030902 |