HEAT TRANSFER SUPPRESSION SHEET AND BATTERY PACK

• Main Authors: JINBO NAOYUKI, ONAYA NAOKI
• Format: Patent
• Language: English; Japanese
• Published: 03.07.2023
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

To provide: a heat transfer suppression sheet capable of maintaining the shape thereof even in cases where the heat transfer suppression sheet is exposed to high temperatures, thereby being capable of suppressing a decrease in the heat insulation performance; and a battery pack which comprises the heat transfer suppression sheet.SOLUTION: A heat transfer suppression sheet 10 contains: first organic fibers 1 that do not have a glass transition temperature at a temperature lower than 120°C; first inorganic particles 2; and a resin binder 9. The first organic fibers 1 have a melting point Tm at a temperature equal to or higher than 200°C. Preferably, the elastic modulus of the first organic fibers 1 at Tm°C is 0.1% or more of the elastic modulus of the first organic fibers 1 at 23°C.SELECTED DRAWING: Figure 1 【課題】熱伝達抑制シートが高温に晒された場合でも、その形状を維持することができ、これにより、断熱性能の低下を抑制することができる熱伝達抑制シート、及びこの熱伝達抑制シートを有する組電池を提供する。【解決手段】熱伝達抑制シート１０は、１２０℃未満の温度においてガラス転移点を有さない第１の有機繊維１と、第１の無機粒子２と、樹脂バインダ９と、を含む。第１の有機繊維１は、２００℃以上の温度で融点Ｔｍを有し、第１の有機繊維１のＴｍ℃における弾性率は、第１の有機繊維１の２３℃における弾性率に対して、０．１％以上であることが好ましい。【選択図】図１