JP2002117911A - Battery mounted apparatus - Google Patents
Battery mounted apparatusInfo
- Publication number
- JP2002117911A JP2002117911A JP2000307436A JP2000307436A JP2002117911A JP 2002117911 A JP2002117911 A JP 2002117911A JP 2000307436 A JP2000307436 A JP 2000307436A JP 2000307436 A JP2000307436 A JP 2000307436A JP 2002117911 A JP2002117911 A JP 2002117911A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- expansion
- charge
- abnormality
- detecting means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Secondary Cells (AREA)
- Protection Of Static Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電池搭載機器に関
し、特にリチウムイオン電池等の容量が大きな電池を搭
載した電池パック、あるいはそれらの電池を内部に搭載
した機器において、充電時の異常等により内部圧力が上
昇した場合に、電池の異常を感知して危険な事態が発生
することを未然に防止した電池搭載機器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery-equipped device, and more particularly to a battery pack having a large capacity battery such as a lithium ion battery or a device having such a battery mounted therein due to an abnormality at the time of charging or the like. The present invention relates to a battery-equipped device that prevents a dangerous situation from occurring when an internal pressure rises by detecting a battery abnormality.
【０００２】[0002]
【従来の技術】リチウムイオン二次電池等の大容量の電
池においては、電池単体での短絡、保護回路の異常や予
期しない事態に対処するために、電池内部の急激な温度
上昇時に電解液等の化学反応が生じて大量の気体が発生
して、電池の内部圧力が上昇し、爆発、あるいは発火等
のおそれがある。従って、このような場合には、電池内
部の圧力を外部に安全に開放する必要がある。2. Description of the Related Art In a large-capacity battery such as a lithium ion secondary battery, in order to cope with a short circuit of the battery alone, an abnormality of a protection circuit, or an unexpected situation, an electrolyte or the like is required when the temperature inside the battery rises sharply. , A large amount of gas is generated, and the internal pressure of the battery increases, which may cause an explosion or ignition. Therefore, in such a case, it is necessary to safely release the pressure inside the battery to the outside.
【０００３】そこで、これらの密閉型電池においては、
電池缶の一部に薄肉部を設け、内部の圧力が所定の大き
さを超えた場合に、破断させることによって内部の圧力
を外部に放出し、電池の爆発を防止することが行われて
いる。しかしながら、薄肉部等の開裂による圧力開放
は、内部圧力の開放までに時間を要し、圧力開放される
時までに内部圧力が高くなるとともに、爆発的に圧力が
開放されるために、圧力開放の際に電池パック、あるい
は電池搭載機器等に歪みを与える場合がある。[0003] Therefore, in these sealed batteries,
A thin portion is provided in a part of a battery can, and when the internal pressure exceeds a predetermined size, the internal pressure is released to the outside by breaking the battery can to prevent the battery from exploding. . However, the pressure release due to the cleavage of the thin-walled part takes time until the internal pressure is released, and the internal pressure increases by the time the pressure is released, and the pressure is explosively released. At this time, the battery pack or the battery-equipped device may be distorted.
【０００４】このような問題点を解決するために、電池
の電解液中に電池温度の上昇、あるいは過充電時の電圧
の上昇等によって電池反応を抑制する物質を添加するこ
と、あるいは電池セパレータとして電池温度の上昇時に
セパレータの開孔を閉塞して電池反応を停止させる等の
提案も行われているが、電解液中への電池反応に寄与し
ない物質の添加は、電池反応を阻害したり、あるいは電
池容量を減少させる可能性も否定できない。また、特殊
なセパレータの使用は、電池容量の減少、製造単価の増
加等の問題もあった。[0004] In order to solve such a problem, a substance that suppresses a battery reaction due to a rise in battery temperature or a rise in voltage at the time of overcharge is added to a battery electrolyte, or a battery separator is used. Proposals have been made to stop the battery reaction by closing the opening of the separator when the battery temperature rises, but the addition of a substance that does not contribute to the battery reaction in the electrolytic solution inhibits the battery reaction, Or the possibility of reducing the battery capacity cannot be denied. In addition, the use of a special separator has problems such as a decrease in battery capacity and an increase in manufacturing unit cost.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、リチウムイ
オン二次電池等の容量の大きな電池において、充電時の
異常等による電池内部の圧力の増加等の危険を未然に防
止することを課題とするものであり、電池が異常を初期
の段階で検知して対応することを課題とするものであ
る。SUMMARY OF THE INVENTION It is an object of the present invention to prevent a danger such as an increase in internal pressure of a battery due to an abnormality during charging in a battery having a large capacity such as a lithium ion secondary battery. It is an object of the present invention to detect and respond to an abnormality in a battery at an early stage.
【０００６】[0006]
【課題を解決するための手段】本発明の課題は、電池収
納空間に少なくとも１個の電池を装着した電池搭載機器
において、電池外装体の外面に、電池が所定の大きさ以
上に膨張した場合に膨張検出信号を発する膨張検出手段
を設けた電池搭載機器によって解決することができる。
また、膨張検出手段の出力に基づいて、電池と電池搭載
機器あるいは充電手段との導電接続の遮断手段を有する
電池搭載機器である。膨張検出手段の出力に基づいて、
異常を表示する手段を有する電池搭載機器である。複数
の膨張検出手段、および複数の膨張検出手段の信号に基
づく電池の膨張を判定する膨張判定手段を有し、変位判
定手段の出力結果に基づいて電池と電池搭載機器あるい
は充電装置との導電接続を遮断する遮断手段を有する電
池搭載機器である。電池が角型電池である前記の電池搭
載機器である。また、少なくとも１個の電池を収納した
電池パックにおいて、電池外装体の外面に、電池が所定
の大きさ以上に膨張した場合に膨張検出信号を発する膨
張検出手段、および膨張検出手段の検出信号によって電
池との通電を遮断する遮断手段を設けた電池パックであ
る。電池が角型電池である前記の電池パックである。SUMMARY OF THE INVENTION An object of the present invention is to provide a battery-equipped device in which at least one battery is mounted in a battery storage space, when the battery expands to a predetermined size or more on the outer surface of a battery outer package. This can be solved by a battery-equipped device provided with an expansion detection means for generating an expansion detection signal.
Also, the present invention is a battery-equipped device having a means for interrupting the conductive connection between the battery and the battery-equipped device or the charging device based on the output of the expansion detecting means. Based on the output of the expansion detection means,
This is a battery-equipped device having a means for displaying an abnormality. A plurality of expansion detecting means; and an expansion determining means for determining expansion of the battery based on signals from the plurality of expansion detecting means, and a conductive connection between the battery and the battery-equipped device or the charging device based on an output result of the displacement determining means. This is a battery-equipped device having a shut-off means for shutting off the battery. The battery-mounted device, wherein the battery is a prismatic battery. Further, in a battery pack containing at least one battery, expansion detection means for generating an expansion detection signal when the battery expands to a predetermined size or more on the outer surface of the battery exterior body, and a detection signal of the expansion detection means. This is a battery pack provided with a cutoff means for cutting off the current supply to the battery. In the above battery pack, the battery is a square battery.
【０００７】[0007]
【発明の実施の形態】本発明は、リチウム二次電池等の
電池が短絡等の異常時に膨張して甚だしい場合には電池
の破裂等の事態に至ることを未然に防止するものであ
り、膨張が始まる初期の段階において電池の異常を検出
して回路を切断したり、過電流状態からの回避を行う安
全性の高い電池搭載機器を提供するものである。なお、
本発明において電池使用機器とは、電池を電源として使
用する機器を意味するが、電池パックのように電池を機
器で使用するために充放電制御装置等をとともに容器に
装填したものも意味する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is intended to prevent a battery such as a lithium secondary battery from expanding when an abnormal condition such as a short circuit occurs and causing the battery to rupture. It is intended to provide a highly-safe battery-equipped device that detects an abnormality in a battery at an early stage of disconnection and disconnects a circuit or avoids an overcurrent state. In addition,
In the present invention, the device using a battery refers to a device using a battery as a power source, but also refers to a device such as a battery pack which is loaded in a container together with a charge / discharge control device and the like in order to use the battery in the device.
【０００８】以下に図面を参照して本発明を説明する。
図１は、本発明の一実施例を説明する図であり、図１
（Ａ）は、本発明を適用した電池パックを示す斜視図で
ある。電池パック１には、充電装置あるいは機器と接続
する正極端子２および負極端子３とを備えており、電池
パックとの各種の制御を行うための信号用接続端子４を
備えており、更に電池パックの状態を表示するための表
示手段５を有している。図１（Ｂ）は、電池パックをＡ
から透視した図である。電池パック１の内部では、角型
電池６が保持部材７によって保持されており、電池パッ
ク１の内部壁面に膨張検出手段８ａ、８ｂを備えてお
り、電池の充放電制御、電池の保護、膨張検出手段８ａ
および８ｂの信号の検出等を行う電池制御手段を設けた
回路基板９を有している。電池の充電時の異常等の際に
は、角型電池６の壁面１０が膨らみ、膨張検出手段８
ａ、８ｂが動作して膨張を検出する。電池パックに角型
電池６を装填した場合には、図において膨張時の仮想線
１１を示すように、電池の膨張時には一般には面積が最
も大きな面が膨張し、その面の中央部が最も大きく膨張
することとなる。したがって、電池の膨張検出手段は、
角型電池６の外面のうち面積が最も大きな面の中央部に
対向する部分に取り付けることが好ましい。The present invention will be described below with reference to the drawings.
FIG. 1 is a diagram for explaining an embodiment of the present invention.
(A) is a perspective view showing a battery pack to which the present invention is applied. The battery pack 1 includes a positive terminal 2 and a negative terminal 3 that are connected to a charging device or a device, and a signal connection terminal 4 for performing various controls with the battery pack. And display means 5 for displaying the state of. FIG. 1B shows a battery pack A
FIG. Inside the battery pack 1, a prismatic battery 6 is held by a holding member 7, and expansion detecting means 8a and 8b are provided on the inner wall surface of the battery pack 1. The battery charge / discharge control, battery protection, and expansion are provided. Detecting means 8a
And a circuit board 9 provided with battery control means for detecting the signals of 8b and 8b. In the event of an abnormality or the like during charging of the battery, the wall surface 10 of the rectangular battery 6 swells and the expansion detecting means 8
a, 8b operate to detect expansion. When the rectangular battery 6 is loaded in the battery pack, the surface having the largest area generally expands when the battery expands, as indicated by the imaginary line 11 when the battery expands, and the central portion of the surface is the largest when the battery expands. It will expand. Therefore, the battery expansion detection means
It is preferable to attach the outer surface of the prismatic battery 6 to a portion facing the center of the surface having the largest area.
【０００９】また、図１（Ｂ）においては、膨張検出手
段を電池の両面にそれぞれ設ける例について示したが、
この例では、電池が膨張していない場合においても、膨
張検出手段の部分が外部から押されると、膨張した場合
と同様に信号が検出される場合も生じる。そのような可
能性がある場合には、膨張検出手段として、変位の絶対
値を検出するものではなく、変位方向を検出可能な膨張
検出手段を用いることによって膨張時のみを正確に判定
することが可能となる。また、膨張検出手段を多数配置
し、複数の面積が小さな領域の動作を検出し、それらの
データをもとに膨張したか否かを判定しても良い。ま
た、膨張検出手段等は、電池パックに装着したもので
も、あるいは電池使用機器の電池収納部に装着したもの
であっても良い。膨張検出手段としては、一定の変位が
あった場合に回路の接続あるいは切断を行うことが可能
なスイッチ、応力センサー等を用いることができ、具体
的には、低背押釦スイッチ、メンブレンスイッチ、タッ
チ式スイッチ等の比較的厚みの小さなスイッチを用いる
ことができる。FIG. 1B shows an example in which the expansion detecting means is provided on both sides of the battery.
In this example, even when the battery is not expanded, when the expansion detection unit is pressed from the outside, a signal may be detected in the same manner as when the battery is expanded. If there is such a possibility, it is possible to accurately determine only the time of inflation by using expansion detection means that can detect the displacement direction instead of detecting the absolute value of the displacement as the expansion detection means. It becomes possible. Alternatively, a large number of expansion detecting means may be arranged, operations of a plurality of areas having a small area may be detected, and whether or not the expansion has occurred may be determined based on the data. Further, the expansion detecting means and the like may be mounted on a battery pack or mounted on a battery storage section of a device using a battery. As the expansion detecting means, a switch capable of connecting or disconnecting a circuit when a certain displacement occurs, a stress sensor, or the like can be used. Specifically, a low-profile push button switch, a membrane switch, a touch switch, or the like can be used. A switch having a relatively small thickness such as a type switch can be used.
【００１０】以上の説明では、角型電池を用いた例につ
いて説明をしたが、本発明は、角型電池のように外面が
平面状であって、内部圧力の増大時に特定の面が大きく
膨張する電池を用いた電池搭載機器に好適であるが、円
筒形の扁平な形状の電池等の他の形状の電池を用いた電
池使用機器に適用することができる。In the above description, an example using a prismatic battery has been described. However, in the present invention, a specific surface greatly expands when the internal pressure increases when the outer surface is flat like a prismatic battery. Although it is suitable for a battery-equipped device using a battery to be used, it can be applied to a device using a battery using a battery of another shape such as a cylindrical flat battery.
【００１１】図２は、本発明の他の実施例を説明する分
解斜視図である。電池パック１は、下ケース１２および
上ケース１３によって形成される容器の内部に角型電池
６を有している。角型電池の外面の面積が最も大きな面
に、膨張検出手段８を備えており、膨張検出手段８は、
電池の充放電制御を行うと共に、充電、あるいは放電時
の異常等から電池および電池使用機器を保護する保護手
段を有する回路基板９に結合されている。膨張検出手段
８が異常を検出した場合には、回路基板９に設けた保護
手段が動作をし、電池の充放電を停止するものである。FIG. 2 is an exploded perspective view for explaining another embodiment of the present invention. Battery pack 1 has prismatic battery 6 inside a container formed by lower case 12 and upper case 13. The surface having the largest area on the outer surface of the prismatic battery is provided with expansion detection means 8, and the expansion detection means 8
It is connected to a circuit board 9 having protection means for performing charge / discharge control of the battery and protecting the battery and equipment using the battery from abnormalities during charging or discharging. When the expansion detection means 8 detects an abnormality, the protection means provided on the circuit board 9 operates to stop charging and discharging of the battery.
【００１２】次に、本発明の電池使用機器に設ける制御
手段を説明する。図３は、本発明の電池使用機器に設け
る制御手段の一例を説明する図である。回路基板９に
は、膨張検出手段に接続された膨張検出手段インターフ
ェース１４を有しており、膨張検出部インターフェース
１４には、角型電池の両面に設置し電池の膨張時に閉回
路を形成するスイッチ１５ａおよび１５ｂが接続されて
いる。膨張検出手段インターフェース１４は、マイクロ
コンピュータ等から構成された中央制御手段１６が結合
されており、角型電池６の膨張によってスイッチ１５ａ
および１５ｂが作動した場合には、膨張検出手段インタ
ーフェース１４からの検出信号は中央制御手段１６に設
けた判定手段１７において判定され、検出信号が角型電
池の膨張によって出力されたものと判定した場合には、
中央制御手段１６は、表示部１８に異常であることを表
示する。同時に、インターフェース１９から電池を使用
している機器に対して異常であることを示す信号を通知
するとともに、充放電制御手段２０に対して異常である
ことを示す信号を通知し、充放電制御手段２０は異常で
あることを示す信号の受信に基づいて充電手段、あるい
は電池利用機器等との外部接続回路２１を遮断する。ま
た、充放電制御手段には、停止後に電池を徐々に放電す
る等の方法によって電池に残存するエネルギーを放電す
る手段を設けたものであっても良い。Next, control means provided in the battery-powered device of the present invention will be described. FIG. 3 is a diagram illustrating an example of a control unit provided in the battery-powered device of the present invention. The circuit board 9 has an expansion detecting means interface 14 connected to the expansion detecting means. The expansion detecting section interface 14 has switches mounted on both sides of the rectangular battery to form a closed circuit when the battery expands. 15a and 15b are connected. The expansion detecting means interface 14 is connected to a central control means 16 composed of a microcomputer or the like.
And 15b are activated, the detection signal from the expansion detecting means interface 14 is determined by the determining means 17 provided in the central control means 16, and it is determined that the detection signal is output by the expansion of the prismatic battery. In
The central control means 16 displays on the display unit 18 that there is an abnormality. At the same time, the interface 19 notifies the device using the battery of a signal indicating that the battery is abnormal, and notifies the charge / discharge control unit 20 of the signal indicating that the battery is abnormal. 20 shuts off the external connection circuit 21 with the charging means or the battery device based on the reception of the signal indicating the abnormality. The charge / discharge control means may be provided with means for discharging the energy remaining in the battery by a method such as gradually discharging the battery after stopping.
【００１３】図４は、本発明の電池使用機器における制
御手段の動作を説明するフローチャートである。電池使
用機器における電池の充放電が始まると、開始ステップ
Ｓ１により、充放電制御ステップＳ２が開始される。充
放電検知ステップＳ３によって、充放電に異常が生じる
と充放電異常処理ステップＳ４の処理を行い、充放電の
停止等の動作を行う。充放電異常が検知されなければ、
膨張検出ステップＳ５において、角型電池の両面に設け
た２個の膨張検出手段を用いて膨張検出ステップＳ５を
実行する。膨張検出手段のいずれもが膨張を検出してい
ない場合、あるいは一方のみが膨張を検出した場合に
は、ステップＳ２からの動作を再度行う。FIG. 4 is a flowchart for explaining the operation of the control means in the battery-powered equipment of the present invention. When the charging / discharging of the battery in the battery-powered device starts, the charging / discharging control step S2 is started by the starting step S1. If an abnormality occurs in the charge / discharge in the charge / discharge detection step S3, the process in the charge / discharge abnormality processing step S4 is performed, and operations such as stop of the charge / discharge are performed. If no charge / discharge abnormality is detected,
In the expansion detection step S5, the expansion detection step S5 is executed using two expansion detection means provided on both sides of the prismatic battery. If none of the expansion detecting means has detected expansion, or if only one has detected expansion, the operation from step S2 is performed again.
【００１４】一方、膨張検出手段の両者が膨張を検出し
た場合には、タイマ作動開始ステップＳ６を実行する。
予め設定した時間が経過した後に膨張検出ステップＳ７
を実行し、膨張検出手段のいずれもが膨張を検出してい
ない場合、あるいは一方のみが膨張を検出した場合に
は、ステップＳ２からの動作を再度行う。膨張検出手段
の両者が検出された場合には、先に検出された時間から
所定の時間が経過した後も膨張検出手段が継続して膨張
を検出しているかを経過時間の測定を時間超過検出ステ
ップＳ８において行う。所定時間が経過する前に、２個
の膨張検出手段の少なくともいずれかが膨張の検出をし
なくなった場合には、再度膨張検出ステップＳ７を行
う。時間超過検出ステップＳ８において、所定の時間の
超過を検出した場合には、異常事態が生じたものと判断
して異常表示ステップＳ９において異常表示を行い、異
常信号通知出力ステップＳ１０において該当する電池を
利用する機器等に対して異常であることを通知し、出力
停止ステップＳ１１において充放電制御手段等に設けら
れた遮断回路等を動作させる。On the other hand, when both of the expansion detecting means detect expansion, a timer operation start step S6 is executed.
After a predetermined time has passed, the expansion detection step S7
Is performed, and if none of the expansion detecting means detects expansion, or if only one detects expansion, the operation from step S2 is performed again. When both of the expansion detecting means are detected, the elapsed time measurement is performed to determine whether the expansion detecting means continuously detects the expansion after a predetermined time has elapsed from the previously detected time. This is performed in step S8. If at least one of the two expansion detecting means does not detect the expansion before the predetermined time has elapsed, the expansion detecting step S7 is performed again. In the time excess detection step S8, when an excess of a predetermined time is detected, it is determined that an abnormal situation has occurred, an abnormality is displayed in the abnormality display step S9, and the corresponding battery is detected in the abnormality signal notification output step S10. The abnormality is notified to a device or the like to be used, and an interruption circuit or the like provided in the charge / discharge control means or the like is operated in the output stop step S11.
【００１５】図５は、本発明の電池使用機器における制
御手段の一例を説明する回路図であり、一般に用いられ
ている電池パック保護回路に、若干の部品の追加によっ
て構成した例を示す図である。電池パック保護回路３０
は、充放電保護等を行う充放電保護集積回路３１を有し
ており、ＭＯＳＥＦＴ等からなる充放電制御用スイッチ
ング素子３２、３３を制御することにより充放電の制御
および異常時の電流の遮断等を行っている。電池の両端
子には、加圧によって作動するスイッチ素子３４が抵抗
３５と直列に接続されている。膨張時にスイッチ素子３
４が動作すると、トランジスタ３６および３７が導通す
る結果、充放電保護集積回路３１から充放電制御用スイ
ッチング素子３２および３３に与えられている電圧が接
地電圧となり、電池電圧にかかわらず充放電制御用スイ
ッチング素子３２、３３が開放されて、回路が遮断され
る。FIG. 5 is a circuit diagram for explaining an example of the control means in the battery-powered equipment of the present invention. FIG. 5 is a diagram showing an example in which some components are added to a generally used battery pack protection circuit. is there. Battery pack protection circuit 30
Has a charge / discharge protection integrated circuit 31 that performs charge / discharge protection and the like, and controls charge / discharge control switching elements 32 and 33 composed of MOSEFT or the like to control charge / discharge and cut off current when an abnormality occurs. It is carried out. A switch element 34 operated by pressurization is connected in series with a resistor 35 to both terminals of the battery. Switch element 3 when expanded
4 operates, the transistors 36 and 37 are turned on. As a result, the voltage applied to the charge / discharge control switching elements 32 and 33 from the charge / discharge protection integrated circuit 31 becomes the ground voltage, regardless of the battery voltage. The switching elements 32 and 33 are opened, and the circuit is shut off.
【発明の効果】本発明の電池使用機器においては、短絡
や保護回路の異常によって電池が膨張して、電池パック
や電池を搭載した機器等の破損を招くような異常な事態
を未然に安全に防止することができる。According to the battery-powered equipment of the present invention, it is possible to safely prevent an abnormal situation in which the battery expands due to a short circuit or an abnormality in the protection circuit, which may cause damage to the battery pack or the equipment equipped with the battery. Can be prevented.
【図１】図１は、本発明の一実施例を説明する図であ
る。FIG. 1 is a diagram for explaining an embodiment of the present invention.
【図２】図２は、本発明の他の実施例を説明する分解斜
視図である。FIG. 2 is an exploded perspective view illustrating another embodiment of the present invention.
【図３】図３は、本発明の電池使用機器に設ける制御手
段の一例を説明する図である。FIG. 3 is a diagram illustrating an example of a control unit provided in the battery-powered device of the present invention.
【図４】図４は、本発明の電池使用機器における制御手
段の動作を説明するフローチャートである。FIG. 4 is a flowchart illustrating the operation of a control unit in the battery-powered device of the present invention.
【図５】図５は、本発明の電池使用機器における制御手
段の一例を説明する回路図である。FIG. 5 is a circuit diagram illustrating an example of a control unit in the battery-powered device of the present invention.
１…電池パック、２…正極端子、３…負極端子、４…信
号用接続端子、５…表示手段、６…角型電池、７…保持
部材、８，８ａ、８ｂ…膨張検出手段、９…回路基板、
１０…壁面、１１…仮想線、１２…下ケース、１３…上
ケース、１４…膨張検出手段インターフェース、１５
ａ，１５ｂ…スイッチ、１６…中央制御手段、１７…判
定手段、１８…表示部、１９…インターフェース、２０
…充放電制御手段、２１…外部接続回路、３０…電池パ
ック保護回路、３１…充放電保護集積回路、３２，３３
…充放電制御用スイッチング素子、３４…スイッチ素
子、３５…抵抗、３６，３７…トランジスタ、Ｓ１…開
始ステップ、Ｓ２…充放電制御ステップ、Ｓ３…充放電
検知ステップ、Ｓ４…充放電異常処理ステップ、Ｓ５…
膨張検出ステップ、Ｓ６…タイマ作動開始ステップ、Ｓ
７…膨張検出ステップ、Ｓ８…時間超過検出ステップ、
Ｓ９…異常表示ステップ、Ｓ１０…異常信号通知出力ス
テップ、Ｓ１１…出力停止ステップDESCRIPTION OF SYMBOLS 1 ... Battery pack, 2 ... Positive electrode terminal, 3 ... Negative electrode terminal, 4 ... Signal connection terminal, 5 ... Display means, 6 ... Square battery, 7 ... Holding member, 8, 8a, 8b ... Expansion detection means, 9 ... Circuit board,
DESCRIPTION OF SYMBOLS 10 ... wall surface, 11 ... virtual line, 12 ... lower case, 13 ... upper case, 14 ... expansion detection means interface, 15
a, 15b: switch, 16: central control means, 17: determination means, 18: display unit, 19: interface, 20
... Charge / discharge control means, 21 ... External connection circuit, 30 ... Battery pack protection circuit, 31 ... Charge / discharge protection integrated circuit, 32, 33
... Charge / discharge control switching element, 34 switch element, 35 resistance, 36, 37 transistor, S1 start step, S2 charge / discharge control step, S3 charge / discharge detection step, S4 charge / discharge abnormality processing step, S5 ...
Expansion detection step, S6 ... Timer operation start step, S
7 ... expansion detection step, S8 ... time excess detection step,
S9: Abnormal display step, S10: Abnormal signal notification output step, S11: Output stop step
Claims (1)
装着した電池搭載機器において、電池外装体の外面に、
電池が所定の大きさ以上に膨張した場合に膨張検出信号
を発する膨張検出手段を設けたことを特徴とする電池搭
載機器。In a battery-equipped device having at least one battery mounted in a battery storage space, an outer surface of a battery exterior body is
A battery-equipped device provided with expansion detection means for generating an expansion detection signal when the battery expands beyond a predetermined size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000307436A JP2002117911A (en) | 2000-10-06 | 2000-10-06 | Battery mounted apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000307436A JP2002117911A (en) | 2000-10-06 | 2000-10-06 | Battery mounted apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002117911A true JP2002117911A (en) | 2002-04-19 |
Family
ID=18787954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000307436A Pending JP2002117911A (en) | 2000-10-06 | 2000-10-06 | Battery mounted apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002117911A (en) |
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