JP3913411B2 - Battery pack with abnormal temperature rise detection device - Google Patents

Battery pack with abnormal temperature rise detection device Download PDF

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JP3913411B2
JP3913411B2 JP22328199A JP22328199A JP3913411B2 JP 3913411 B2 JP3913411 B2 JP 3913411B2 JP 22328199 A JP22328199 A JP 22328199A JP 22328199 A JP22328199 A JP 22328199A JP 3913411 B2 JP3913411 B2 JP 3913411B2
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Prior art keywords
abnormal
temperature rise
battery
ptc
abnormal temperature
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JP2001052763A (en
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正一 遠矢
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Priority to JP22328199A priority Critical patent/JP3913411B2/en
Priority to DE2000111233 priority patent/DE10011233B4/en
Priority to US09/523,059 priority patent/US6444350B1/en
Priority to FR0003106A priority patent/FR2792115B1/en
Priority to CNB001040332A priority patent/CN1193456C/en
Priority to GB0018024A priority patent/GB2354587B/en
Priority to SE0002769A priority patent/SE524272C2/en
Priority to KR10-2000-0045007A priority patent/KR100472818B1/en
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    • 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

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Description

【０００１】
【発明の属する技術分野】
本発明は、単電池を直列もしくは並列に多数個連結した組電池において、これら多数個の単電池のうち、少なくとも一つが異常昇温したことを検出することができる異常昇温検出装置を備えた組電池に関するものである。
【０００２】
【従来の技術】
電池の異常昇温を検出して、電池の劣化や発熱による事故等を未然に防止するため、電池にＰＴＣ素子のような熱センサーを組み込んだ組電池が広く知られている。
【０００３】
また、電気自動車用のモーター駆動電源として、多数の単電池を電気的に直列接続して高電圧、高電流の電力を供給しうるものが提案されている。そして、このような電気自動車用の電源装置に温度センサーを組み込んだものも知られており、例えば、特開平１０−２７００９４号公報に開示されたものがある。
【０００４】
この公報に開示された異常昇温検出装置を図１に示す。図１に示す異常昇温検出装置は、組電池を構成する各単電池の各々全てに、ＰＴＣセンサ７を外部から取付けている。そして、単電池の接続系統とは別系統にして、ＰＴＣセンサ７だけを全て直列接続して抵抗測定装置に接続し、これら直列接続されたＰＴＣセンサ７の全抵抗を測定するようになっている。ＰＴＣセンサ７を取付けた単電池のうち１個でも異常昇温したときには、その単電池に取付けたＰＴＣセンサ７の抵抗値が飛躍的に増大する結果、抵抗測定装置によってその異常昇温が検出されるようにしたものである。
【０００５】
【発明が解決しようとする課題】
しかしながら、この公報に開示されている異常昇温検出装置は、各々の単電池に取付けた全てのＰＴＣセンサ７を直列に接続して、その直列接続されたＰＴＣセンサ７の全抵抗値を測定して検出を行っているものである。ここで、ＰＴＣセンサ７はそれぞれ固有の温度特性上のバラツキを有している。従って、ＰＴＣセンサ７の接続個数が多くなるに従って、そのバラツキについても総和され、全抵抗の測定値には、各ＰＴＣセンサ７全てのバラツキが加わることになる。特に、特開平１０−２７００９４号公報のように、電気自動車用電池電源装置を構成する１２６個または２５２個の単電池の各々に温度センサを取り付け、その全抵抗の測定値となると、極めて大きなバラツキが加えられてしまう。
【０００６】
このため、例え、１個の単電池が異常昇温して、その単電池に装着したＰＴＣセンサの抵抗値が飛躍的に増大したとしても、前述の通り、各ＰＴＣセンサにはバラツキがあるために、この増大した抵抗値が検出できない場合がある。あるいは、これらのバラツキを考慮して、抵抗値の増大を検出するためのしきい値がバラツキ分を含めた高い値に設定されている場合は、そのしきい値を越える値になるまで抵抗値が増大しない限り異常昇温を検出することができず、しきい値を越える値まで抵抗値が増大するのに時間がかかってしまうという問題がある。
【０００７】
さらに、この公報に示される異常昇温検出装置は、電池電源装置を構成する１２６個の単電池の各々に取付けたＰＴＣセンサを全て直列に接続したものであるから、１２６個のうちどの単電池が異常昇温したのか不明であり、異常による単電池や装置全体の修理や交換等の対応は広い範囲で行わなければならず、保守点検等が迅速に行えない欠点がある。
【０００８】
従って、この発明は、温度センサの温度特性上のバラツキに影響を受けずに、単電池の異常昇温を正確に検出すると共に、異常昇温による抵抗値の増大を素早く検出して検出時間を短くでき、且つ、複数の単電池で構成される電源装置に用いられる場合でも、単電池の異常昇温を比較的狭い範囲で検出でき、その対応や保守点検等を早く行えるようにした異常昇温検出装置を備えた組電池を提供するものである。
【０００９】
【課題を解決するための手段】
この発明は、複数個の単電池と、単電池に取付けられて昇温時に電気抵抗が変化する温度センサと、温度センサの抵抗値を測定して単電池の異常昇温を検出する異常昇温検出手段とから構成される異常昇温検出装置を備えた組電池において、前記温度センサは複数の温度センサブロックに分割構成されて、各温度センサブロックは各々同数の温度センサが直列接続されており、一方、前記異常昇温検出手段は、各温度センサブロック全体の抵抗値を測定し、各測定値の差をとり、その差が所定値を越えたときに異常昇温を検出することを特徴とすることを特徴とする。
【００１０】
さらに、前記温度センサがＰＴＣ素子であることを特徴とする。
【００１１】
さらにまた、複数の単電池により電池モジュールを構成して、この電池モジュールを複数本備えており、温度センサは電池モジュール単位で直列接続されていることを特徴とする。
【００１２】
【発明の実施の形態】
本発明の実施例を図面に基づき説明する。本発明の異常昇温検出装置を備えた組電池は、電気自動車の電池電源や、内燃機関と電池駆動モータとを組み合わせて走行駆動源としたハイブリッドタイプの自動車の電池電源に用いられる。図２に電池電源の外観斜視図を示す。この電池電源１は、上下のホルダーケース２と中間ケース３、両側面のエンドプレート４によって囲まれた直方体形状となっている。
【００１３】
電池電源１の内部には、多数の円筒型の単電池５が収納されている。単電池５は、６本ずつ縦に長く棒状にして、各単電池１を全て直列にして連結し、電池モジュール６を構成している。そして、この電池モジュール６を８本横に並べて、且つ前記中間ケース３を介して２段にして収納している。その結果、単電池５は総数で９６本収納されており、これらの単電池５がエンドプレート４に設けられたリード板によって全て直列に接続されている。さらに、この９６本の単電池を収納した電池電源１を複数接続することによって、単電池の本数は９６本の整数倍に増加させることができる。従って、電気自動車のサイズや出力に応じた電源電圧や出力電流等を得ることができる。
【００１４】
尚、本実施例の単電池５にはニッケル水素電池を用いているが、ニッケル−カドミウム電池やリチウムイオン電池等を用いても構わない。
【００１５】
６本の単電池５を縦に長く棒状に接続した前記電池モジュール６には、温度センサとしてのＰＴＣセンサ７が電池モジュール６の外部から取付けられている。ＰＴＣセンサ７は、全ての単電池５に対して１個ずつ接着により装着されている。このＰＴＣセンサ７は、６本の単電池５に沿うように、６個のＰＴＣセンサ７が互いにリード板によって一列に細長く連結されている。そして、６個のＰＴＣセンサ７の両端に延びたリード板が、前記エンドプレート４を介して、隣接する電池モジュール６に装着されている６個のＰＴＣセンサ７のリード板に電気接続されている。
【００１６】
これによって、電池電源１に収納されている９６本の全ての単電池に装着されている各ＰＴＣセンサ７は全て接続することができる。ただ、ＰＴＣセンサ７は、全てを直列にすることもできるが、例えば、電池モジュール６を２本単位、即ち単電池５を１２本単位で直列に接続することもできる。このように、電池モジュール単位でＰＴＣセンサ７を直列接続し、各々リード板を延長してその電気信号を取り出すことができる。さらに、単電池５の全てにＰＴＣセンサ７を装着しなくても、例えば、単電池５の１個おきにＰＴＣセンサ７を装着して、電池モジュール１本で３個のＰＴＣセンサを装着するようにしても構わない。
【００１７】
このようにして装着されたＰＴＣセンサ７は、大電流が流れる単電池５の直列回路とは別系統でＰＴＣセンサ７のみの回路を構成することができる。従って、ＰＴＣセンサ７には小電流とすることができるので、多数直列に接続しても発熱の心配がないと共に、ＰＴＣセンサ７による電圧降下分だけ電池電源の出力が低下してしまうということもない。
【００１８】
本実施例におけるＰＴＣセンサ７は、図４に示すように、１２個の単電池５の各々に装着されたＰＴＣセンサ７ごとに各々直列接続されて、一つのＰＴＣセンサブロック８を構成している。従って、電池電源１の９６本の単電池５の各々に装着された各ＰＴＣセンサ７は、８つのＰＴＣセンサブロックに分割されて、各々のブロックごとで各ＰＴＣセンサ７が直列接続されている。
【００１９】
そして、これらのＰＴＣセンサブロック８は、各々異常昇温検出手段９に接続されている。ここで、この異常昇温検出手段９の動作について説明する。
【００２０】
▲１▼異常昇温検出手段９は、接続されている各ＰＴＣセンサブロック８全体の抵抗値を測定する。
【００２１】
▲２▼このブロック毎に測定した抵抗値を比較し、２つのブロックの各測定値の差をとる。
【００２２】
▲３▼その差と、異常昇温検出手段９にあらかじめ設定された所定値とを比較し、その差が所定値を越えたときに、異常昇温であることを検出する。
【００２３】
▲４▼異常昇温が検出されると、その異常信号を電池電源１のコントロールユニットＥＣＵに出力して、ＥＣＵが電池異常であることを報知する。
【００２４】
このように、異常昇温検出手段９は、ＰＴＣセンサ７をブロック毎に分割して直列接続し、各ブロック毎の抵抗値を測定すると共に、その差が所定値を越えたときに、異常昇温であることを検出するものである。
【００２５】
従って、ブロック毎の抵抗値の差をとるために、各ＰＴＣセンサ７がもつ温度特性上のバラツキはここで相殺されることになる。このため、単電池のいずれかに異常昇温が発生し、その単電池に装着されたＰＴＣセンサ７の抵抗値が飛躍的に増大すると、各センサのバラツキが相殺されているために、その増加分だけを正確に検出することができる。
【００２６】
その結果、各ＰＴＣセンサのバラツキの影響を受けずに誤検出がなく正確に検出ができると共に、バラツキが相殺されるために、設定する所定値を必要以上に大きく設定しなくてもよく、抵抗値の増大に敏感に反応させることができ、検出時間を早くすることができる。
【００２７】
さらに、 各ＰＴＣセンサ７は、ＰＴＣセンサブロックに分割しているために、９６個の単電池５のうち、どれか１個の単電池５に異常昇温が発生しても、ブロック単位で検出することができるので、修理や交換等の対応を比較的狭い範囲で行えるため、保守点検等が迅速に行える。
【００２８】
尚、前記異常昇温検出手段９は、各ＰＴＣセンサブロック８の抵抗値を測定し、その差を取るようにしているが、これに限らず、例えば、各ＰＴＣセンサブロックの測定値の比率や倍率を取ることによって比較を行い、異常昇温を検出するようにしても構わない。
【００２９】
【発明の効果】
本発明によれば、異常昇温検出手段は、ＰＴＣセンサをブロック毎に分割して直列接続し、各ブロック毎の抵抗値を測定すると共に、その差が所定値を越えたときに、異常昇温であることを検出する。
【００３０】
従って、ブロック毎の抵抗値の差をとるために、各ＰＴＣセンサがもつ温度特性上のバラツキはここで相殺されることになる。このため、単電池のいずれかに異常昇温が発生し、その単電池に装着されたＰＴＣセンサの抵抗値が飛躍的に増大すると、各センサのバラツキが相殺されているために、その増加分だけを正確に検出することができる。
【００３１】
その結果、各ＰＴＣセンサのバラツキの影響を受けずに誤検出がなく正確に検出ができると共に、バラツキが相殺されるために、設定する所定値を必要以上に大きく設定しなくてもよく、抵抗値の増大に敏感に反応させることができ、検出時間を早くすることができる。
【００３２】
さらに、 各ＰＴＣセンサは、ＰＴＣセンサブロックに分割しているために、多数の単電池のうち、どれか１個の単電池に異常昇温が発生しても、ブロック単位で検出することができるので、修理や交換等の対応を比較的狭い範囲で行えるため、保守点検等が迅速に行える。
【００３３】
その結果、この電池の異常昇温検出装置は、極めて多数の単電池を直列接続する電気自動車やハイブリッドタイプの自動車の電池電源に用いることによって、正確に且つ素早く検出することができるので、安全で保守点検等も容易に行え、電気自動車における電池電源の取り扱いに優れた異常昇温検出装置を提供することができる。
【図面の簡単な説明】
【図１】従来の異常昇温検出装置の接続回路図
【図２】電池電源の分解斜視図
【図３】電池モジュールの平面図
【図４】異常昇温検出装置の回路図
【符号の説明】
１ 電池電源
２ ホルダーケース
３ 中間ケース
４ エンドプレート
５ 単電池
６ 電池モジュール
７ ＰＴＣセンサ
８ ＰＴＣセンサブロック
９ 異常昇温検出手段[0001]
BACKGROUND OF THE INVENTION
The present invention is provided with an abnormal temperature rise detection device capable of detecting that at least one of these multiple unit cells is abnormally heated in an assembled battery in which a number of unit cells are connected in series or in parallel. The present invention relates to an assembled battery.
[0002]
[Prior art]
An assembled battery in which a thermal sensor such as a PTC element is incorporated in a battery is widely known in order to detect an abnormal temperature rise of the battery and prevent an accident due to deterioration or heat generation of the battery.
[0003]
In addition, as a motor drive power source for an electric vehicle, one that can supply a high voltage and a high current by electrically connecting a large number of single cells in series has been proposed. Also known is a power supply device for an electric vehicle in which a temperature sensor is incorporated, for example, one disclosed in Japanese Patent Application Laid-Open No. 10-270094.
[0004]
The abnormal temperature rise detection device disclosed in this publication is shown in FIG. The abnormal temperature rise detection device shown in FIG. 1 has a PTC sensor 7 attached from the outside to each of the cells constituting the assembled battery. In addition, the PTC sensor 7 alone is connected in series by connecting to the resistance measuring device separately from the unit cell connection system, and the total resistance of the PTC sensor 7 connected in series is measured. . When even one of the cells to which the PTC sensor 7 is attached has an abnormal temperature rise, the resistance value of the PTC sensor 7 attached to the cell increases drastically, so that the abnormal temperature rise is detected by the resistance measuring device. It was made to do.
[0005]
[Problems to be solved by the invention]
However, the abnormal temperature rise detection device disclosed in this publication connects all the PTC sensors 7 attached to each unit cell in series, and measures the total resistance value of the PTC sensors 7 connected in series. This is what is being detected. Here, each PTC sensor 7 has its own variation in temperature characteristics. Therefore, as the number of connected PTC sensors 7 increases, the variation is also summed, and the variation of all the PTC sensors 7 is added to the measured value of the total resistance. In particular, as disclosed in Japanese Patent Application Laid-Open No. 10-270094, when a temperature sensor is attached to each of 126 or 252 single cells constituting a battery power supply device for an electric vehicle and the measured value of the total resistance is obtained, extremely large variations occur. Will be added.
[0006]
For this reason, even if one unit cell is abnormally heated and the resistance value of the PTC sensor attached to the unit cell increases dramatically, as described above, each PTC sensor has variations. In addition, the increased resistance value may not be detected. Alternatively, in consideration of these variations, if the threshold value for detecting an increase in the resistance value is set to a high value including the variation, the resistance value until the threshold value is exceeded. Unless the temperature increases, an abnormal temperature rise cannot be detected, and it takes time for the resistance value to increase to a value exceeding the threshold value.
[0007]
Furthermore, since the abnormal temperature rise detection device shown in this publication is formed by connecting all the PTC sensors attached to each of the 126 single cells constituting the battery power supply device in series, which single cell out of 126 It is unclear whether or not the temperature has risen abnormally, and repairs and replacements of single cells or the entire device due to the abnormality must be performed over a wide range, and there is a disadvantage that maintenance inspection and the like cannot be performed quickly.
[0008]
Accordingly, the present invention accurately detects an abnormal temperature rise of a single cell without being affected by variations in temperature characteristics of the temperature sensor, and quickly detects an increase in resistance value due to the abnormal temperature rise, thereby reducing the detection time. Even when used in a power supply unit consisting of a plurality of single cells, the abnormal temperature rise of the single cells can be detected in a relatively narrow range, and the response and maintenance inspection can be performed quickly. An assembled battery including a temperature detecting device is provided.
[0009]
[Means for Solving the Problems]
The present invention relates to a plurality of single cells, a temperature sensor attached to the single cells and whose electrical resistance changes as the temperature rises, and an abnormal temperature rise that detects the abnormal temperature rise of the single cell by measuring the resistance value of the temperature sensor. In an assembled battery comprising an abnormal temperature rise detection device comprising detection means, the temperature sensor is divided into a plurality of temperature sensor blocks, and each temperature sensor block is connected in series with the same number of temperature sensors. whereas, the abnormal Atsushi Nobori detection means, characterized in that the resistance value of the entire respective temperature sensor block measures, taking the difference between each measurement, detecting the abnormal Atsushi Nobori when the difference exceeds a predetermined value It is characterized by.
[0010]
Further, the temperature sensor is a PTC element.
[0011]
Furthermore, a battery module is constituted by a plurality of single cells , a plurality of the battery modules are provided, and the temperature sensors are connected in series for each battery module .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described based on the drawings. The assembled battery provided with the abnormal temperature rise detection device of the present invention is used for a battery power source of an electric vehicle or a hybrid type vehicle battery power source using a combination of an internal combustion engine and a battery drive motor as a travel drive source. FIG. 2 shows an external perspective view of the battery power source. The battery power source 1 has a rectangular parallelepiped shape surrounded by upper and lower holder cases 2, an intermediate case 3, and end plates 4 on both side surfaces.
[0013]
A large number of cylindrical unit cells 5 are accommodated inside the battery power source 1. The unit cell 5 is formed into a long and vertically long bar shape, and the unit cells 1 are all connected in series to constitute a battery module 6. Then, eight battery modules 6 are arranged side by side and stored in two stages via the intermediate case 3. As a result, a total of 96 unit cells 5 are accommodated, and all these unit cells 5 are connected in series by a lead plate provided on the end plate 4. Further, by connecting a plurality of the battery power sources 1 housing the 96 unit cells, the number of unit cells can be increased to an integral multiple of 96 units. Therefore, a power supply voltage, an output current, etc. according to the size and output of the electric vehicle can be obtained.
[0014]
In addition, although the nickel hydride battery is used for the unit cell 5 of a present Example, you may use a nickel-cadmium battery, a lithium ion battery, etc.
[0015]
A PTC sensor 7 as a temperature sensor is attached from the outside of the battery module 6 to the battery module 6 in which six unit cells 5 are vertically connected in a rod shape. One PTC sensor 7 is attached to every single cell 5 by bonding. In the PTC sensor 7, the six PTC sensors 7 are connected to each other in a row by a lead plate so as to be along the six cells 5. The lead plates extending to both ends of the six PTC sensors 7 are electrically connected to the lead plates of the six PTC sensors 7 mounted on the adjacent battery modules 6 via the end plates 4. .
[0016]
As a result, all the PTC sensors 7 attached to all 96 unit cells housed in the battery power source 1 can be connected. However, although all the PTC sensors 7 can be connected in series, for example, the battery modules 6 can be connected in series in units of two, that is, the unit cells 5 in units of twelve. In this way, the PTC sensors 7 can be connected in series in units of battery modules, and the respective lead plates can be extended to take out their electrical signals. Further, even if the PTC sensors 7 are not attached to all of the single cells 5, for example, the PTC sensors 7 are attached to every other single cell 5, and three PTC sensors are attached to one battery module. It doesn't matter.
[0017]
The PTC sensor 7 thus mounted can constitute a circuit of only the PTC sensor 7 in a system different from the series circuit of the unit cells 5 through which a large current flows. Therefore, since a small current can be applied to the PTC sensor 7, there is no fear of heat generation even when a large number of the PTC sensors 7 are connected in series, and the output of the battery power supply is reduced by the voltage drop caused by the PTC sensor 7. Absent.
[0018]
As shown in FIG. 4, the PTC sensor 7 in this embodiment is connected in series for each PTC sensor 7 attached to each of the twelve unit cells 5 to constitute one PTC sensor block 8. . Therefore, each PTC sensor 7 attached to each of the 96 single cells 5 of the battery power source 1 is divided into eight PTC sensor blocks, and each PTC sensor 7 is connected in series for each block.
[0019]
These PTC sensor blocks 8 are each connected to an abnormal temperature rise detection means 9. Here, the operation of the abnormal temperature rise detection means 9 will be described.
[0020]
(1) The abnormal temperature rise detection means 9 measures the resistance value of each connected PTC sensor block 8 as a whole.
[0021]
(2) The resistance values measured for each block are compared, and the difference between the measured values of the two blocks is taken.
[0022]
(3) The difference is compared with a predetermined value preset in the abnormal temperature rise detection means 9, and when the difference exceeds the predetermined value, it is detected that the temperature is abnormally high.
[0023]
(4) When an abnormal temperature rise is detected, an abnormal signal is output to the control unit ECU of the battery power source 1 to notify the ECU that the battery is abnormal.
[0024]
In this way, the abnormal temperature rise detection means 9 divides the PTC sensor 7 into blocks and connects them in series, measures the resistance value of each block, and when the difference exceeds a predetermined value, It detects that it is warm.
[0025]
Therefore, in order to take the difference in resistance value for each block, the variation in temperature characteristics of each PTC sensor 7 is canceled here. For this reason, when an abnormal temperature rise occurs in any of the single cells, and the resistance value of the PTC sensor 7 attached to the single cell increases drastically, the variation of each sensor is offset and the increase Only minutes can be detected accurately.
[0026]
As a result, there is no erroneous detection without being affected by variations in each PTC sensor, and accurate detection is possible, and variations are offset, so that the predetermined value to be set does not have to be set larger than necessary. It is possible to react sensitively to an increase in value, and the detection time can be shortened.
[0027]
Furthermore, since each PTC sensor 7 is divided into PTC sensor blocks, even if an abnormal temperature rise occurs in any one of the 96 unit cells 5, it is detected in units of blocks. Therefore, since repair and replacement can be performed within a relatively narrow range, maintenance and inspection can be performed quickly.
[0028]
The abnormal temperature rise detection means 9 measures the resistance value of each PTC sensor block 8 and takes the difference between them. However, the present invention is not limited to this. For example, the ratio of measured values of each PTC sensor block, A comparison may be made by taking a magnification to detect an abnormal temperature rise.
[0029]
【The invention's effect】
According to the present invention, the abnormal temperature rise detection means divides the PTC sensor into blocks and connects them in series, measures the resistance value for each block, and when the difference exceeds a predetermined value, Detect that it is warm.
[0030]
Therefore, in order to take a difference in resistance value for each block, variations in temperature characteristics of each PTC sensor are canceled out here. For this reason, if an abnormal temperature rise occurs in any of the unit cells and the resistance value of the PTC sensor attached to the unit cell increases dramatically, the variation of each sensor is offset, and the increase Only can be detected accurately.
[0031]
As a result, there is no erroneous detection without being affected by variations in each PTC sensor, and accurate detection is possible, and variations are offset, so that the predetermined value to be set does not have to be set larger than necessary. It is possible to react sensitively to an increase in value, and the detection time can be shortened.
[0032]
Furthermore, since each PTC sensor is divided into PTC sensor blocks, even if an abnormal temperature rise occurs in any one of a number of single cells, it can be detected in units of blocks. Therefore, since repair and replacement can be performed within a relatively narrow range, maintenance and inspection can be performed quickly.
[0033]
As a result, this battery abnormal temperature rise detection device can be detected accurately and quickly by using it as a battery power source for electric vehicles and hybrid type vehicles in which a large number of single cells are connected in series. Maintenance / inspection etc. can be performed easily and the abnormal temperature rising detection apparatus excellent in the handling of the battery power supply in an electric vehicle can be provided.
[Brief description of the drawings]
1 is a connection circuit diagram of a conventional abnormal temperature rise detection device. FIG. 2 is an exploded perspective view of a battery power source. FIG. 3 is a plan view of a battery module. FIG. 4 is a circuit diagram of an abnormal temperature rise detection device. ]
DESCRIPTION OF SYMBOLS 1 Battery power supply 2 Holder case 3 Intermediate case 4 End plate 5 Cell 6 Battery module 7 PTC sensor 8 PTC sensor block 9 Abnormal temperature rise detection means

Claims (3)

複数個の単電池と、単電池に取付けられて昇温時に電気抵抗が変化する温度センサと、温度センサの抵抗値を測定して単電池の異常昇温を検出する異常昇温検出手段とから構成される異常昇温検出装置を備えた組電池において、前記温度センサは複数の温度センサブロックに分割構成されて、各温度センサブロックは各々同数の温度センサが直列接続されており、一方、前記異常昇温検出手段は、各温度センサブロック全体の抵抗値を測定し、各測定値の差をとり、その差が所定値を越えたときに異常昇温を検出することを特徴とする異常昇温検出装置を備えた組電池。A plurality of single cells, a temperature sensor attached to the single cell and whose electric resistance changes when the temperature rises, and an abnormal temperature rise detection means for detecting an abnormal temperature rise of the single cell by measuring the resistance value of the temperature sensor In the assembled battery including the abnormal temperature rise detection device configured, the temperature sensor is divided into a plurality of temperature sensor blocks, and each temperature sensor block is connected in series with the same number of temperature sensors, abnormal Atsushi Nobori detection means, the resistance value of the entire respective temperature sensor block measures, taking the difference between the measured values, abnormal rise of the difference, and detects the abnormal Atsushi Nobori when a exceeds a predetermined value A battery pack equipped with a temperature detection device. 前記温度センサがＰＴＣ素子である請求項１記載の異常昇温検出装置を備えた組電池。  The assembled battery provided with the abnormal temperature rise detection device according to claim 1, wherein the temperature sensor is a PTC element. 複数の単電池により電池モジュールを構成して、この電池モジュールを複数本備えており、温度センサは電池モジュール単位で直列接続されていることを特徴とする請求項１記載の異常昇温検出装置を備えた組電池。The abnormal temperature rise detection device according to claim 1, wherein a battery module is constituted by a plurality of single cells, and a plurality of the battery modules are provided, and the temperature sensors are connected in series in units of battery modules. The assembled battery.
JP22328199A 1999-03-12 1999-08-06 Battery pack with abnormal temperature rise detection device Expired - Fee Related JP3913411B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP22328199A JP3913411B2 (en) 1999-08-06 1999-08-06 Battery pack with abnormal temperature rise detection device
DE2000111233 DE10011233B4 (en) 1999-03-12 2000-03-08 battery unit
US09/523,059 US6444350B1 (en) 1999-03-12 2000-03-09 Battery unit which can detect an abnormal temperature rise of at least one of a plurality of cells
FR0003106A FR2792115B1 (en) 1999-03-12 2000-03-10 BATTERY UNIT
CNB001040332A CN1193456C (en) 1999-03-12 2000-03-13 Battery
GB0018024A GB2354587B (en) 1999-08-06 2000-07-21 Battery unit
SE0002769A SE524272C2 (en) 1999-08-06 2000-07-26 Battery unit
KR10-2000-0045007A KR100472818B1 (en) 1999-08-06 2000-08-03 Battery unit

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JP22328199A JP3913411B2 (en) 1999-08-06 1999-08-06 Battery pack with abnormal temperature rise detection device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3605128A1 (en) 2018-08-03 2020-02-05 Airbus Defence and Space Electrical battery monitoring device and battery

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3706576B2 (en) 2001-12-27 2005-10-12 三洋電機株式会社 Power supply
FR3016217A1 (en) * 2014-01-03 2015-07-10 Commissariat Energie Atomique DEVICE AND METHOD FOR DETECTING HEATING OF A BATTERY PACKAGE
CN117452249B (en) * 2023-12-26 2024-04-02 深圳达人高科电子有限公司 Test equipment for detecting abnormal resistance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3605128A1 (en) 2018-08-03 2020-02-05 Airbus Defence and Space Electrical battery monitoring device and battery
US11378627B2 (en) 2018-08-03 2022-07-05 Airbus Helicopters Deutschland GmbH Electrical battery monitoring device and battery

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