SOLID BATTERY

• Main Authors: IKEDA YU, NOMOTO KAZUMASA, OGUMA YASUMASA
• Format: Patent
• Language: English; Japanese
• Published: 27.09.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To prevent, in a solid battery in which a bipolar electrode body is housed in an outer casing, a situation in which, if a large current flows in a tab and heat is generated in the tab, a sealing portion in contact with the tab is melted and opened.SOLUTION: A solid battery comprises: an outer casing; a sealing portion provided on the outer casing; a bipolar electrode body housed inside the seating portion of the outer casing; a tab projecting outside the outer casing through the sealing portion from the bipolar electrode body; and a heat conduction unit provided in an inner part of the outer casing; wherein the heat conduction unit has an insulating property, contains resin and a heat conductive material higher in thermal conductivity than the resin and is in contact with the bipolar electrode body and the tab.SELECTED DRAWING: Figure 1 【課題】外装体にバイポーラ電極体が収容された固体電池において、タブに大電流が流れてタブが発熱した場合に、タブに接するシール部が溶けて開放することを抑制する。【解決手段】外装体と、前記外装体に設けられたシール部と、前記外装体の前記シール部の内側に収容されたバイポーラ電極体と、前記バイポーラ電極体から前記シール部を通って前記外装体の外に突出するタブと、前記外装体の内部に設けられた熱伝導部と、を備え、前記熱伝導部は、絶縁性を有し、樹脂と該樹脂よりも熱伝導性が高い熱伝導材料とを含むとともに、前記バイポーラ電極体と前記タブとに接する、固体電池。【選択図】図１