PASSIVE PROTECTION BATTERY MODULE STRUCTURE AND MANUFACTURING METHOD THEREFOR

• Main Authors: LU, Hengfei, XU, Bangnan, LIN, Zhihong, WANG, Yong
• Format: Patent
• Language: English; French; German
• Published: 19.07.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A battery module structure with passive protection and a fabrication method thereof are provided by the present invention, relating to PACK for power batteries. In the battery module with passive protection, the battery cells in the battery module are respectively spaced by the fireproof and thermally insulating spacer. An excellent thermal insulation can be achieved by the fireproof and thermally insulating spacer due to a mica sheet and the endothermic foaming of the fireproof and thermally insulating coating when heated, such that the risk of having a thermal runaway or even breaking the explosion-proof valve when the battery cells are overheated can be effectively delayed or avoided in case that the adjacent battery cell is overcharged or has a thermal runaway under a high temperature. This gives sufficient time for people in the vehicle to evacuate, ensuring the personnel safety.