Heat-insulating and flame-retardant layer, battery and electric device

The utility model discloses a heat-insulation flame-retardant layer, a battery and an electric device, and belongs to the technical field of battery heat insulation. By arranging the uniform temperature layer with the heat-conducting particles in the heat-insulating and flame-retardant layer, when the heat-insulating and flame-retardant layer is applied to the battery, the uniform temperature layer can transfer heat at a higher temperature position of the single battery to a lower temperature position, so that the effect of reducing the probability of thermal runaway of the battery is achieved. Meanwhile, due to the fact that the uniform-temperature layer causes heat transfer of the single batteries, the temperature difference of all positions of the single batteries is reduced, the heat-insulation flame-retardant layer can achieve the heat-insulation flame-retardant effect equal to that of a traditional heat-insulation flame-retardant layer under the thinner condition, the space utilization rate of the batteries is increased, and then the energy density of the batteries is improved.