BATTERY MODULE

To provide a battery module capable of preventing concatenation occurrence of an abnormal temperature among the circumference battery cells, in the case of occurring the abnormal temperature in one part of the battery cells.SOLUTION: A battery module is a battery module to which a plurality of batte...

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Hauptverfasser: AMAGAI SHUNSUKE, TERADA ICHIRO, TSUSHIMA TAKUYA, OTA TAKASHI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a battery module capable of preventing concatenation occurrence of an abnormal temperature among the circumference battery cells, in the case of occurring the abnormal temperature in one part of the battery cells.SOLUTION: A battery module is a battery module to which a plurality of battery cells each housing a battery element in an inner part is mounted. The battery module comprises: an electrode terminal provided to each battery cell; a bus bar to which the electrode terminal is electrically connected; a gas discharge hole discharging a high pressure gas in the inner part to an outer air in the case where an inner pressure of the inner part becomes high; and a thermal expansion resin provided between each battery cell and the bus bar. The thermal expansion resin is expanded by heating with the high pressure gas when the high pressure gas is discharged from the gas discharge hole, and is arranged interposed between the bus bar and the gas discharge hole.SELECTED DRAWING: Figure 1 【課題】一部のバッテリセルに温度異常が発生した場合に、周囲のバッテリセル間で温度異常の連鎖的発生を防ぐことができるバッテリモジュールを提案する。【解決手段】一実施形態に係るバッテリモジュールは、電池要素を内部に収容する複数のバッテリセルが搭載されるバッテリモジュールであって、前記バッテリセルに夫々設けられる電極端子と、前記電極端子が電気的に接続されるバスバーと、前記内部の内圧が高くなった場合に、前記内部の高圧ガスを外気に放出するガス放出孔と、前記バッテリセルと前記バスバーとの間に設けられる熱膨張樹脂と、を備え、前記熱膨張樹脂は、前記ガス放出孔から前記高圧ガスが放出された場合に前記高圧ガスにより加熱されて膨張し、前記バスバーと前記ガス放出孔との間に介在するように配置される。【選択図】図1