SECONDARY BATTERY

• Main Authors: KATSUMOTO TAICHI, KAGEYAMA MASAYUKI, HORIKOSHI YOSHIKAZU
• Format: Patent
• Language: English; Japanese
• Published: 15.03.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a secondary battery that can both increase energy density and improve manufacturing stability.SOLUTION: A secondary battery includes a battery element including a positive electrode and a negative electrode, a container member that houses the battery element therein, a lid member welded to the container member, and an electrode terminal provided on the lid member. The lid member has a recess formed by bending the lid member so as to partially protrude toward the interior of the container member, and the electrode terminal is disposed inside the recess.SELECTED DRAWING: Figure 2 【課題】エネルギー密度の増加と製造安定性の向上とを両立させることが可能である二次電池を提供する。【解決手段】二次電池は、正極と負極とを含む電池素子と、その電池素子を内部に収容する器部材と、その器部材に溶接された蓋部材と、その蓋部材に設けられた電極端子とを備える。蓋部材は、その蓋部材が器部材の内部に向かって部分的に突出するように折れ曲がることにより形成された窪み部を有し、電極端子は、窪み部の内部に配置されている。【選択図】図２