Abstract: This application discloses a heat-resistant protective member and a battery. The heat-resistant protective member includes a reinforcing layer, a functional layer, and a strengthening layer that are sequentially arranged; the functional layer includes a first resin and a filler dispersed in the first resin; and the reinforcing layer and the strengthening layer each include a fiber matrix. In the foregoing manner, thermal impact of a single battery during ignition and detonation can be resisted, and structural integrity under the thermal impact can still be prevented from being broken through, so as to provide effective heat insulation and protection for a battery pack.

Abstract: A heat-resistant protective member and a battery are disclosed. The heat-resistant protective member includes a compound layer, and the compound layer includes a fiber matrix and a resin. The resin is dispersed in pores of the fiber matrix and/or a surface of the fiber matrix, and a volume proportion of the fiber matrix in the compound layer is 50% to 75%. In this way, the thermal shock when a battery cell is ignited and exploded can be resisted, and the structural integrity can still be maintained without being broken through under the thermal shock, thereby providing effective heat insulation and protection for a battery pack.

Abstract: A heat insulation and preservation composite board includes a first panel layer and a heat insulation and preservation layer. The heat insulation and preservation layer and the first panel layer are integrally formed. The first panel layer is a fiber-reinforced resin-based composite sheet, a metal plate, a cement plate, a calcium silicate plate, or a gypsum plate. The heat insulation and preservation layer is a fiber-reinforced aerogel felt. A preparation method of the heat insulation and preservation composite board includes: (1) laying the fiber-reinforced aerogel felt flat; (2) laying the first panel layer flat on the upper surface of the fiber-reinforced aerogel felt; (3) performing a hot-press molding process to obtain the heat insulation and preservation composite board.