BATTERY DEVICE

• Main Authors: SANO TAKASHI, HATAKEYAMA MASARU, FUYUKI TETSURO, IWASAKI YASUKAZU
• Format: Patent
• Language: English; Japanese
• Published: 16.03.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a battery device including a method capable of softening the severity of a thermal runaway reaction so as to prevent battery inner pressure from excessively rising due to battery cell expansion or the like and thereby reducing an effect of thermal/mechanical damage.SOLUTION: In a battery device, a battery cell 11 having a flat shape is held in a case 14 while being restricted, a ratchet 17 is provided to plates 15, 16 that restrict one side of the battery cell 11, and, when an internal pressure of the battery cell 11 exceeds a predetermined pressure that is lower than a pressure at which a battery is opened, the ratchet 17 is deformed to be disengaged from the case 14 so that a pressure restricting the battery cell 11 in a lamination direction P is released.SELECTED DRAWING: Figure 3 【課題】バッテリセルの膨張等によるバッテリの内圧の過度な上昇を防止するように、熱暴走反応の激しさをマイルドにすることができ、熱的機械的損傷の影響を低減する方法を備える、電池装置の提供。【解決手段】偏平形状をなすバッテリセル１１を拘束した状態でケース１４内に保持し、バッテリセル１１の一側を拘束するプレート１５、１６に、つめ部１７をを設け、バッテリセル１１の内圧が、バッテリが開放される圧力より低い圧力である所定の圧力を超えると、つめ部１７が変形しケース１４から外れて、バッテリセル１１を積層方向Ｐに拘束する圧力を開放する様に構成されている電池装置。【選択図】図３