JP2002042752A - Battery pack - Google Patents
Battery packInfo
- Publication number
- JP2002042752A JP2002042752A JP2000219914A JP2000219914A JP2002042752A JP 2002042752 A JP2002042752 A JP 2002042752A JP 2000219914 A JP2000219914 A JP 2000219914A JP 2000219914 A JP2000219914 A JP 2000219914A JP 2002042752 A JP2002042752 A JP 2002042752A
- Authority
- JP
- Japan
- Prior art keywords
- abnormality
- battery pack
- charging
- detecting
- discharging
- 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.)
- Granted
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、異常状態発生時の
保護機能を有する電池パックに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack having a protection function when an abnormal condition occurs.
【0002】[0002]
【従来の技術及び発明が解決しようとする課題】電池パ
ックが寿命に達した後もそのまま使用し続けると、容量
値が極端に減少するばかりでなく、過充電、過放電が繰
り返された電池は、リチウムがデンドライト状に析出し
てセパレータを突き破り、また、水没や電解液の漏出等
で、電池パック内部に液体が浸入すると、電池内部でシ
ョートすることにより、発煙、発火という可能性が大き
くなる。あるいは、使用者の誤使用によって電池パック
が解体されたり、鋭利な金属で傷つけられたり等、予期
しない状態に曝されたりすると、同様の問題が生じる。2. Description of the Related Art If a battery pack is used continuously after its life has expired, not only the capacity value will be extremely reduced, but also a battery which has been repeatedly overcharged and overdischarged will not be used. When lithium precipitates in the form of dendrite and breaks through the separator, and liquid enters the battery pack due to submergence or leakage of the electrolyte, the possibility of smoke or ignition increases due to a short circuit inside the battery. . Alternatively, a similar problem occurs when the battery pack is disassembled by a user's misuse or is exposed to an unexpected state such as being damaged by sharp metal.
【0003】さらに、本来電池は産業廃棄物として特定
の業者が処理すべきであるが、そのまま可燃物と一緒に
廃棄されてしまう可能性もある。このような場合にも、
現状の電池パックでは、例えば過充電の状態で危険な状
態に曝されてしまうと、発煙、発火という可能性が大き
くなる。[0003] Furthermore, batteries should be disposed of as industrial waste by a specific trader, but there is a possibility that the batteries may be disposed of together with combustible materials. In such a case,
In the current battery pack, for example, if the battery pack is exposed to a dangerous state in an overcharged state, the possibility of smoking or firing increases.
【0004】[0004]
【課題を解決するための手段】本発明は、上記課題を解
決するものであって、異常状態発生時の電池パックの安
全性の向上を図り、また、電池パックの故障原意の解析
に有用な情報を提供できるようにするものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is intended to improve the safety of a battery pack when an abnormal condition occurs and to be useful for analyzing the original cause of a battery pack failure. To provide information.
【0005】そのために本発明は、異常状態発生時の保
護機能を有する電池パックであって、異常を検出する異
常検出手段と、前記異常検出手段による異常の検出によ
り発熱抵抗体を発熱させる発熱制御手段と、充放電の電
流経路に挿入され前記発熱抵抗体の発熱によって溶断す
る温度ヒューズとを備え、異常が検出されたとき温度ヒ
ューズの溶断により前記充放電の電流経路を切断し、充
電又は充放電不能に制御するように構成したことを特徴
とし、さらに、前記異常検出手段により検出された異常
を記憶する不揮発性メモリと、前記不揮発性メモリに記
憶された異常の情報を出力する通信手段又は表示手段を
出力手段としてを備え、異常が検出されたとき温度ヒュ
ーズの溶断により前記充放電の電流経路を切断し、充電
又は充放電不能に制御し、前記不揮発性メモリに記憶さ
れた異常の情報を出力するように構成したことを特徴と
するものである。Therefore, the present invention relates to a battery pack having a protection function in the event of occurrence of an abnormal state, comprising an abnormality detecting means for detecting an abnormality, and a heat generation control for causing a heating resistor to generate heat by detecting the abnormality by the abnormality detecting means. Means, and a thermal fuse inserted into the charging / discharging current path and blown by the heat generated by the heating resistor. When an abnormality is detected, the charging / discharging current path is cut by blowing the temperature fuse to charge or charge. Characterized in that it is configured to be controlled to be unable to discharge, and further, a non-volatile memory that stores the abnormality detected by the abnormality detection unit, and a communication unit that outputs information of the abnormality stored in the non-volatile memory or A display means is provided as an output means, and when an abnormality is detected, the charging / discharging current path is cut by blowing the temperature fuse to disable charging or charging / discharging. Gyoshi and is characterized by being configured to output the abnormality information stored in the nonvolatile memory.
【0006】また、前記異常検出手段は、水や電解液を
含む液体の浸入を検出する手段や、過充電又は過電圧を
検出する手段、充電時間異常を検出する手段、直列接続
された複数のセル電圧のアンバランスを検出する手段、
充電用スイッチ素子がオフしているにも関わらず充電電
流が所定の期間、所定の値以上流れたのを検出する手段
であることを特徴とするものである。The abnormality detecting means includes means for detecting intrusion of a liquid containing water or electrolyte, means for detecting overcharge or overvoltage, means for detecting abnormality in charging time, and a plurality of cells connected in series. Means for detecting voltage imbalance,
It is a means for detecting that a charging current has flowed over a predetermined value for a predetermined period even though the charging switch element is off.
【0007】[0007]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照しつつ説明する。図1は本発明に係る電池パック
の実施の形態を示す図であり、1は電池、2は電池電圧
監視IC、3は充放電用制御FET、4は制御マイコ
ン、5は電流検出抵抗、6はOPAMP、7はEEPR
OM、8は液体検出部及び温度ヒューズ、9はLED表
示器を示す。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a battery pack according to the present invention, wherein 1 is a battery, 2 is a battery voltage monitoring IC, 3 is a charge / discharge control FET, 4 is a control microcomputer, 5 is a current detection resistor, 6 Is OPAMP, 7 is EEPR
OM, 8 denotes a liquid detection unit and a temperature fuse, and 9 denotes an LED display.
【0008】図1において、電池1は、3直にセルが接
続された二次電池であり、電流検出抵抗5は、その充放
電電流Iを検出し、OPAMP6は、電流検出抵抗5に
より検出された微小電圧を増幅する増幅器である。電池
電圧監視IC2は、電池電圧を検出し充放電制御を行う
保護ICである。制御マイコン4は、電池パック内の各
種制御、異常検出等を行うものであり、そのための演算
処理を行い、また外部ホスト装置に対し通信等を行う。
EEPROM7は、プログラムや制御データ、異常デー
タ、履歴・蓄積データ等を格納する記憶手段である。充
放電用制御FET3は、電池電圧監視IC2又は制御マ
イコン4からの信号により充放電をオン、オフ制御する
スイッチ素子である。液体検出部及び温度ヒューズ8
は、水没、電解液の漏出等で、電池パック内部に液体が
浸入した際に、液体検出素子により検出してFETを制
御し、例えば発熱体を発熱させて温度ヒューズを溶断さ
せるものである。LED表示器9は、容量表示用として
残量を表示すると共に、温度ヒューズが溶断した場合に
自動的に、あるいは別にスイッチを設け、これを押すこ
とにより、異常情報を例えば数ビットの2進コードで表
示する。In FIG. 1, a battery 1 is a secondary battery in which cells are directly connected to each other. A current detection resistor 5 detects the charge / discharge current I, and an OPAMP 6 is detected by the current detection resistor 5. This is an amplifier that amplifies a very small voltage. The battery voltage monitoring IC 2 is a protection IC that detects battery voltage and performs charge / discharge control. The control microcomputer 4 performs various controls in the battery pack, abnormality detection, and the like, performs arithmetic processing therefor, and communicates with an external host device.
The EEPROM 7 is storage means for storing programs, control data, abnormal data, history / accumulated data, and the like. The charge / discharge control FET 3 is a switch element that controls charging / discharging on / off by a signal from the battery voltage monitoring IC 2 or the control microcomputer 4. Liquid detector and thermal fuse 8
When a liquid enters the inside of a battery pack due to submergence, leakage of an electrolyte, or the like, the liquid detection element detects the liquid and controls the FET, thereby causing, for example, a heating element to generate heat to blow the thermal fuse. The LED display 9 displays the remaining amount for capacity display, and automatically or separately provides a switch when the thermal fuse is blown, and presses this switch to display abnormality information, for example, a binary code of several bits. To display.
【0009】上記のような液体検出部及び温度ヒューズ
8は、例えばコネクタ部のような液体の入る個所の近く
に液体検出部を配置し、ヒューズ溶断部を液体検出部か
ら少なくとも10mm以上離して熱的に分離し配置した
ものである。そして、液体を検出すると、ヒューズ溶断
部を溶断すると共に各セルを強制放電させる。また、ヒ
ューズ溶断部は、液体が入ってきても液体と接触しない
ようにシリコン等のシール材にてシールしている。これ
は、液体検出部とヒューズ溶断部とが近くにありヒュー
ズ溶断部の発熱によって液体検出部の液体が蒸発してし
まうとヒューズが溶断せず、これを何度も繰り返すとヒ
ューズが溶断しなくなってしまうの防ぐためである。In the above-described liquid detecting section and the thermal fuse 8, the liquid detecting section is arranged near a location where liquid enters, such as a connector section, and the fuse blowing section is separated from the liquid detecting section by at least 10 mm or more. It is what was separated and arranged. When the liquid is detected, the fuse blowing section is blown, and each cell is forcibly discharged. Further, the fuse blown portion is sealed with a sealing material such as silicon so as not to come into contact with the liquid even when the liquid enters. This is because the fuse is not blown out if the liquid in the liquid detection part evaporates due to the heat generated by the fuse blowout part because the liquid detection part and the fuse blowout part are close to each other. This is to prevent that.
【0010】電池1と電池電圧監視IC2との間を接続
する電圧検出リード線は、所定値以上、例えば100Ω
以上の抵抗値を有するリード線を使用する。これは、通
常のリード線を使用すると、断線した後ショートし発
煙、発火の可能性があるためである。電圧検出リード線
には、例えば数μA程度と、特に大きな電流を流す必要
がないので、例えば1kΩの抵抗値のものであっても問
題はない。A voltage detecting lead wire connecting the battery 1 and the battery voltage monitoring IC 2 has a predetermined value or more, for example, 100Ω.
A lead wire having the above resistance value is used. This is because, if a normal lead wire is used, there is a possibility of short-circuiting after disconnection, and smoking or ignition. Since a particularly large current of, for example, about several μA does not need to flow through the voltage detection lead wire, there is no problem even if it has a resistance value of 1 kΩ, for example.
【0011】図2は液体検出部及び温度ヒューズの具体
的な構成例を示す図であり、11は液体検出部、12は
温度ヒューズ、14は発熱抵抗体、15は制御マイコ
ン、Q1、Q2は制御FETを示す。FIG. 2 is a diagram showing a specific configuration example of the liquid detecting section and the temperature fuse, wherein 11 is a liquid detecting section, 12 is a temperature fuse, 14 is a heating resistor, 15 is a control microcomputer, and Q1 and Q2 are 3 shows a control FET.
【0012】液体検出部及び温度ヒューズの具体的な構
成例を示したのが図2であり、温度ヒューズ12は、電
池1を充放電する電流経路に直列に挿入接続されたもの
である。発熱抵抗体14は、制御FETQ1又は制御F
ETQ2がオンになると電流が流れて発熱し、温度ヒュ
ーズ12を溶断させるものである。液体検出部11は、
液体を検出すると抵抗値が低下するものであり、このと
き制御FETQ1のゲート電圧が上がるので、制御FE
TQ1をオンにして発熱抵抗体14を発熱させ、電流経
路にある温度ヒューズ12を溶断させる。また、制御マ
イコン15は、例えば基板上の発熱、セル電圧その他の
異常を検出し制御FETQ2をオンにして発熱抵抗体1
4を発熱させ、電流経路にある温度ヒューズ12を溶断
させるものであり、図1に示す制御マイコン4であって
もよいし、別のものであってもよい。このように温度ヒ
ューズ12を溶断させることにより充電又は充放電不能
とする。FIG. 2 shows a specific configuration example of the liquid detecting section and the thermal fuse. The thermal fuse 12 is inserted and connected in series to a current path for charging and discharging the battery 1. The heating resistor 14 is connected to the control FET Q1 or the control F
When the ETQ 2 is turned on, a current flows and heat is generated, and the thermal fuse 12 is blown. The liquid detection unit 11
When the liquid is detected, the resistance value decreases. At this time, the gate voltage of the control FET Q1 increases.
When TQ1 is turned on, the heat generating resistor 14 generates heat, and the thermal fuse 12 in the current path is blown. The control microcomputer 15 detects, for example, heat generation on the substrate, cell voltage, and other abnormalities, turns on the control FET Q2, and turns on the heating resistor 1
The control microcomputer 4 generates heat and blows the thermal fuse 12 in the current path, and may be the control microcomputer 4 shown in FIG. 1 or another. Thus, charging or charging / discharging is disabled by blowing the thermal fuse 12.
【0013】通常の温度ヒューズの場合は、セル温度が
所定の温度以上になった場合に充放電の電流経路にある
温度ヒューズが切れて充放電不能となるが、例えばセル
の数が多い場合には、多数の温度ヒューズを電流経路に
挿入しなければならず、電圧ドロップも大きくなってし
まう。そこで、1つの温度ヒューズ12のみを充放電の
電流経路に配置し、その他の温度ヒューズは、溶断した
かどうかを制御マイコン15が検出するように構成して
もよい。なお、充電又は充放電不能とする構成として
は、上記のように恒久的に充放電用制御FETをオフに
するか、又は充放電の電流経路に挿入した温度ヒューズ
12を溶断する手段を用いることができる。In the case of a normal thermal fuse, when the cell temperature rises above a predetermined temperature, the thermal fuse in the charging / discharging current path blows and charging and discharging become impossible. For example, when the number of cells is large, In this case, a large number of thermal fuses must be inserted into the current path, and the voltage drop increases. Therefore, only one thermal fuse 12 may be arranged in the current path for charging and discharging, and the other thermal fuses may be configured so that the control microcomputer 15 detects whether or not the thermal fuse has blown. As a configuration in which charging or charging / discharging is not possible, as described above, the charging / discharging control FET is permanently turned off, or a means for blowing the thermal fuse 12 inserted in the charging / discharging current path is used. Can be.
【0014】なお、本発明は上記実施の形態に限定され
るものではなく、種々の変形が可能である。例えば上記
実施の形態では、液体を検出し電流経路を溶断させる検
出部とヒューズとが一体になった液体検出部及び温度ヒ
ューズにより示したが、検出部と温度ヒューズ、発熱抵
抗体をそれぞれ別体に構成してもよいことはいうまでも
ない。また、液体検出と温度検出に基づき温度ヒューズ
を溶断させることにより、充電又は充放電不能とするよ
うに制御したが、過充電又は過電圧、充電時間異常、セ
ル電圧のアンバランス、充電用FETがオンしているに
も関わらず充電電流が所定の期間所定値以上流れた場合
など、他の異常を検出する手段を設け、それらにより異
常を検出したことを条件に温度ヒューズを溶断させるよ
うにしてもよい。さらに、このような場合に、どの異常
により作動したかを不揮発性メモリに記憶し、外部ホス
ト機器からの要求により通信にて送信できるようにして
もよい。The present invention is not limited to the above-described embodiment, but can be variously modified. For example, in the above-described embodiment, the liquid detection unit and the temperature fuse in which the detection unit and the fuse for detecting liquid and fusing the current path are shown as an integral unit, but the detection unit, the temperature fuse, and the heating resistor are separately provided. Needless to say, the configuration may be made as follows. In addition, charging or charging / discharging is controlled by blowing the thermal fuse based on liquid detection and temperature detection.However, overcharging or overvoltage, charging time abnormality, cell voltage imbalance, and charging FET are turned on. Even if the charging current flows over a predetermined value for a predetermined period in spite of the above-mentioned operation, means for detecting other abnormalities may be provided, and the thermal fuse may be blown on the condition that the abnormality is detected. Good. Further, in such a case, the abnormality caused by the operation may be stored in the non-volatile memory, and may be transmitted by communication in response to a request from the external host device.
【0015】例えば充電時間の基準値を設定し、これを
大幅に超えているにも関わらず電流が流れている場合、
また、アンバランスの基準値を設定し、各セル電圧間の
差を求めてその差が基準値より大きく極度にアンバラン
スとなっている場合、充電時間及び充電電流の基準値を
設定し、充電用FETがオフしているにも関わらず充電
電流が所定の期間所定値以上流れた場合など、電池パッ
クに致命的と思われる症状が発生したときに、制御マイ
コンにより制御FETを制御し、温度ヒューズを溶断さ
せる。For example, when a reference value of the charging time is set, and the current is flowing though the value greatly exceeds the reference value,
In addition, a reference value of unbalance is set, and a difference between each cell voltage is obtained. When the difference is larger than the reference value and extremely unbalanced, a reference value of charging time and charging current is set, and charging is performed. The control microcomputer controls the control FET when a symptom that seems to be fatal occurs in the battery pack, for example, when the charging current flows for a predetermined time or more for a predetermined period even when the FET is off. Blow the fuse.
【0016】[0016]
【発明の効果】以上の説明から明らかなように、本発明
によれば、異常状態発生時の保護機能を有する電池パッ
クであって、異常を検出する異常検出手段と、異常検出
手段による異常の検出により発熱抵抗体を発熱させる発
熱制御手段と、充放電の電流経路に挿入され発熱抵抗体
の発熱によって溶断する温度ヒューズとを備え、異常が
検出されたとき温度ヒューズの溶断により充放電の電流
経路を切断し、充電又は充放電不能に制御するように構
成したので、水や電解液を含む液体の浸入や、過充電又
は過電圧、充電時間異常、直列接続された複数のセル電
圧のアンバランス、充電用スイッチ素子がオフしている
にも関わらず充電電流が所定の期間、所定の値以上流れ
たなどの、異常状態発生時に充電又は充放電不能に制御
することができ、電池パックの安全性の向上を図ること
ができる。As is apparent from the above description, according to the present invention, there is provided a battery pack having a protection function in the event of an abnormal state, comprising: an abnormality detecting means for detecting an abnormality; Heat generation control means for causing the heat generation resistor to generate heat upon detection; and a temperature fuse inserted into the charge / discharge current path and blown by the heat generated by the heat generation resistor. The system is configured to cut off the path and control charging or charging / discharging, so that intrusion of liquid including water and electrolyte, overcharging or overvoltage, abnormal charging time, and imbalance of multiple series-connected cell voltages Even if the charging switch element is off, the charging current flows for a predetermined period, for example, a predetermined value or more. It is possible to improve the safety of the pond pack.
【0017】さらに、異常検出手段により検出された異
常を記憶する不揮発性メモリと、不揮発性メモリに記憶
された異常の情報を出力する通信手段又は表示手段を出
力手段としてを備え、不揮発性メモリに記憶された異常
の情報を出力するように構成したので、電池パックの故
障原因を解析する場合に有用な情報を提示することがで
きる。Further, the nonvolatile memory includes a nonvolatile memory for storing the abnormality detected by the abnormality detecting means, and a communication means or a display means for outputting information of the abnormality stored in the nonvolatile memory as an output means. Since the stored abnormality information is configured to be output, it is possible to present useful information when analyzing the cause of the failure of the battery pack.
【図1】 本発明に係る電池パックの実施の形態を示す
図である。FIG. 1 is a diagram showing an embodiment of a battery pack according to the present invention.
【図2】 液体検出部及び温度ヒューズの具体的な構成
例を示す図である。FIG. 2 is a diagram illustrating a specific configuration example of a liquid detection unit and a thermal fuse.
1…電池、2…電池電圧監視IC、3…充放電用制御F
ET、4…マイコン、5…電流検出抵抗、6…OPAM
P、7…EEPROM、8…液体検出部及び温度ヒュー
ズ、9…LED表示器、11…液体検出部、12…温度
ヒューズ、14…発熱抵抗体、15…制御マイコン、Q
1、Q2…制御FETDESCRIPTION OF SYMBOLS 1 ... Battery, 2 ... Battery voltage monitoring IC, 3 ... Charge / discharge control F
ET, 4 ... microcomputer, 5 ... current detection resistor, 6 ... OPAM
P, 7: EEPROM, 8: Liquid detection unit and temperature fuse, 9: LED display, 11: Liquid detection unit, 12: Temperature fuse, 14: Heating resistor, 15: Control microcomputer, Q
1, Q2 ... control FET
Claims (8)
パックであって、異常を検出する異常検出手段と、前記
異常検出手段による異常の検出により発熱抵抗体を発熱
させる発熱制御手段と、充放電の電流経路に挿入され前
記発熱抵抗体の発熱によって溶断する温度ヒューズとを
備え、異常が検出されたとき温度ヒューズの溶断により
前記充放電の電流経路を切断し、充電又は充放電不能に
制御するように構成したことを特徴とする電池パック。1. A battery pack having a protection function in the event of occurrence of an abnormal state, comprising: an abnormality detecting means for detecting an abnormality; a heat generation control means for causing a heating resistor to generate heat by detecting the abnormality by the abnormality detecting means; A temperature fuse that is inserted into a discharge current path and is blown by the heat generated by the heat generating resistor. When an abnormality is detected, the charge / discharge current path is cut by blowing the temperature fuse to control charging or discharging to be impossible. A battery pack characterized in that:
パックであって、異常を検出する異常検出手段と、前記
異常検出手段により検出された異常を記憶する不揮発性
メモリと、前記異常検出手段による異常の検出により発
熱抵抗体を発熱させる発熱制御手段と、充放電の電流経
路に挿入され前記発熱抵抗体の発熱によって溶断する温
度ヒューズと、前記不揮発性メモリに記憶された異常の
情報を出力する出力手段とを備え、異常が検出されたと
き温度ヒューズの溶断により前記充放電の電流経路を切
断し、充電又は充放電不能に制御し、前記不揮発性メモ
リに記憶された異常の情報を出力するように構成したこ
とを特徴とする電池パック。2. A battery pack having a protection function in the event of occurrence of an abnormal state, comprising: an abnormality detecting means for detecting an abnormality; a non-volatile memory for storing the abnormality detected by the abnormality detecting means; A heating control means for causing the heating resistor to generate heat upon detection of an abnormality, a temperature fuse inserted into a charging / discharging current path to be blown by the heating of the heating resistor, and outputting information of the abnormality stored in the nonvolatile memory. Output means for disconnecting the charge / discharge current path by blowing the thermal fuse when an abnormality is detected, controlling charging or charging / discharging to be impossible, and outputting information on the abnormality stored in the nonvolatile memory. A battery pack characterized in that:
記憶された異常の情報を外部ホスト機器からの要求によ
り通信にて送信する通信手段又は前記異常の情報を表示
する表示手段であることを特徴とする請求項2記載の電
池パック。3. The output unit may be a communication unit that transmits information of the abnormality stored in the non-volatile memory by communication in response to a request from an external host device, or a display unit that displays the information of the abnormality. The battery pack according to claim 2, wherein:
液体の浸入を検出する手段であることを特徴とする請求
項1又は2記載の電池パック。4. The battery pack according to claim 1, wherein said abnormality detecting means is means for detecting intrusion of a liquid containing water or an electrolytic solution.
を検出する手段であることを特徴とする請求項1又は2
記載の電池パック。5. An apparatus according to claim 1, wherein said abnormality detecting means is means for detecting overcharge or overvoltage.
The battery pack as described.
出する手段であることを特徴とする請求項1又は2記載
の電池パック。6. The battery pack according to claim 1, wherein the abnormality detecting unit detects a charging time abnormality.
数のセル電圧のアンバランスを検出する手段であること
を特徴とする請求項1又は2記載の電池パック。7. The battery pack according to claim 1, wherein the abnormality detecting means is means for detecting an imbalance of a plurality of cell voltages connected in series.
子がオフしているにも関わらず充電電流が所定の期間、
所定の値以上流れたのを検出する手段であることを特徴
とする請求項1又は2記載の電池パック。8. The abnormality detecting means according to claim 1, wherein the charging current is maintained for a predetermined period even though the charging switch element is off.
3. The battery pack according to claim 1, wherein the battery pack detects a flow of a predetermined value or more.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000219914A JP3468421B2 (en) | 2000-07-21 | 2000-07-21 | Battery pack |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000219914A JP3468421B2 (en) | 2000-07-21 | 2000-07-21 | Battery pack |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2002042752A true JP2002042752A (en) | 2002-02-08 |
JP3468421B2 JP3468421B2 (en) | 2003-11-17 |
Family
ID=18714609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000219914A Expired - Lifetime JP3468421B2 (en) | 2000-07-21 | 2000-07-21 | Battery pack |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3468421B2 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007087780A (en) * | 2005-09-22 | 2007-04-05 | Sanyo Electric Co Ltd | Battery pack |
KR100709843B1 (en) * | 2005-11-03 | 2007-04-23 | 삼성에스디아이 주식회사 | Battery pack |
JP2008098056A (en) * | 2006-10-13 | 2008-04-24 | Sony Corp | Battery pack, and control method of battery pack |
JP2008306782A (en) * | 2007-06-05 | 2008-12-18 | Sanyo Electric Co Ltd | Battery pack |
US20110127945A1 (en) * | 2009-11-30 | 2011-06-02 | Tetsuya Yoneda | Forced discharge mechanism and safety switch device for storage battery |
JP2011216387A (en) * | 2010-04-01 | 2011-10-27 | Hitachi Koki Co Ltd | Battery pack |
KR101475917B1 (en) * | 2011-04-15 | 2014-12-24 | 주식회사 엘지화학 | Apparatus for protecting battery pack and battery pack using the same |
CN105322242A (en) * | 2014-08-05 | 2016-02-10 | 广达电脑股份有限公司 | Standby battery |
JP2017163808A (en) * | 2016-03-11 | 2017-09-14 | マックス株式会社 | Battery pack |
CN108028154A (en) * | 2015-10-07 | 2018-05-11 | 迪睿合株式会社 | Liquid leaching sensor, switch element, battery system |
CN109994787A (en) * | 2017-12-29 | 2019-07-09 | 睿能创意公司 | System and method based on use state maintenance energy storage device |
-
2000
- 2000-07-21 JP JP2000219914A patent/JP3468421B2/en not_active Expired - Lifetime
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007087780A (en) * | 2005-09-22 | 2007-04-05 | Sanyo Electric Co Ltd | Battery pack |
KR100709843B1 (en) * | 2005-11-03 | 2007-04-23 | 삼성에스디아이 주식회사 | Battery pack |
JP2008098056A (en) * | 2006-10-13 | 2008-04-24 | Sony Corp | Battery pack, and control method of battery pack |
JP2008306782A (en) * | 2007-06-05 | 2008-12-18 | Sanyo Electric Co Ltd | Battery pack |
US20110127945A1 (en) * | 2009-11-30 | 2011-06-02 | Tetsuya Yoneda | Forced discharge mechanism and safety switch device for storage battery |
JP2011115030A (en) * | 2009-11-30 | 2011-06-09 | Sharp Corp | Forced discharge mechanism and safety switch device of storage battery |
JP2011216387A (en) * | 2010-04-01 | 2011-10-27 | Hitachi Koki Co Ltd | Battery pack |
KR101475917B1 (en) * | 2011-04-15 | 2014-12-24 | 주식회사 엘지화학 | Apparatus for protecting battery pack and battery pack using the same |
CN105322242A (en) * | 2014-08-05 | 2016-02-10 | 广达电脑股份有限公司 | Standby battery |
JP2016039772A (en) * | 2014-08-05 | 2016-03-22 | 廣達電腦股▲分▼有限公司 | Backup battery |
CN108028154A (en) * | 2015-10-07 | 2018-05-11 | 迪睿合株式会社 | Liquid leaching sensor, switch element, battery system |
CN108028154B (en) * | 2015-10-07 | 2020-11-10 | 迪睿合株式会社 | Liquid immersion sensor, switching element, and battery system |
JP2017163808A (en) * | 2016-03-11 | 2017-09-14 | マックス株式会社 | Battery pack |
CN109994787A (en) * | 2017-12-29 | 2019-07-09 | 睿能创意公司 | System and method based on use state maintenance energy storage device |
Also Published As
Publication number | Publication date |
---|---|
JP3468421B2 (en) | 2003-11-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6873135B2 (en) | Battery pack and battery pack checking method | |
JP3638102B2 (en) | Battery pack | |
US6420852B1 (en) | Battery pack | |
US7816889B2 (en) | Method of charging rechargeable battery and protection circuit for rechargeable battery | |
JP5025160B2 (en) | Secondary battery device | |
US7710070B2 (en) | Battery pack apparatus and method of controlling battery pack apparatus | |
US8981726B2 (en) | Secondary battery system and charging system for secondary battery | |
JP5219463B2 (en) | Pack battery | |
JP2007194052A (en) | Battery pack and method of permanently stopping function of battery pack | |
KR101093982B1 (en) | Battery pack and driving method thereof | |
CN108292841A (en) | The protection circuit and battery pack of lithium rechargeable battery | |
JP3468421B2 (en) | Battery pack | |
JPH10136576A (en) | Protection device of secondary battery | |
JP2008312396A (en) | Power supply system for vehicle | |
JP2008204878A (en) | Battery pack and detecting method | |
JP2022528875A (en) | Battery pack defect detection device and method | |
KR20180058056A (en) | Battery pack protection apparatus | |
KR100601557B1 (en) | Battery management unit and its method | |
KR101945900B1 (en) | battery pack and protection method of the battery pack | |
JP2008148419A (en) | Battery pack | |
US9614259B2 (en) | Battery with a thermal tripping element | |
JP2009087723A (en) | Battery pack | |
JP2000166107A (en) | Method and circuit for inspecting function of overcharging protective circuit | |
JP2003109673A (en) | Battery pack with warning function | |
KR100614392B1 (en) | battery pack |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TRDD | Decision of grant or rejection written | ||
R150 | Certificate of patent or registration of utility model |
Ref document number: 3468421 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090905 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090905 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100905 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100905 Year of fee payment: 7 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100905 Year of fee payment: 7 |
|
R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100905 Year of fee payment: 7 |
|
R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100905 Year of fee payment: 7 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110905 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120905 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130905 Year of fee payment: 10 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
EXPY | Cancellation because of completion of term |