| 摘要 |
PURPOSE:To enhance safety by preventing accidents such as burst and explosion due to internal pressure buildup. CONSTITUTION:In a layer built lithium secondary battery which comprises a current collector, a positive material, either a electrolyte-containing separator or a solid electrolyte, and a negative material, all of which are rectangular and arranged in one stack or more, the stack of the members are sealed inside a casing 3, and the casing 3 is provided with terminal pullout openings 3a, and the openings 3a are sealed by terminal holding members 6 made of resin or rubber, and terminals 7, 8 are passed through the respective terminal holding members 6. The terminal holding members 6 undergo deformation due to internal pressure buildup and form a gap between the terminals 7, 8, allowing the internal gas to leak out. |
