The second generation of aerogel high-efficiency heat-insulating sheet is customized to use heat-insulating processed parts between the battery cores according to customers' requirements. The sealing film is canceled, and the material has good compression performance; because the new energy industry is under great pressure to reduce costs, the heat insulation sheet will become a trend to reduce costs under the functional requirements of inhibiting heat diffusion and slowing down accidents in the event of thermal runaway of the battery cell.