关键词: 绝缘电阻；燃料电池；高压电；用电安全

Abstract: In a fuel cell cooling system, the coolant is in direct contact with high-voltage electricity. To ensure high-voltage safety, it is necessary to ensure that the cooling system has a high insulation resistance value. This article analyzes the possible leakage components in the fuel cell cooling system in order to improve the insulation performance of the fuel electric cooling system. By designing insulation protection for the intercooler and plate heat exchanger in the fuel cell cooling system, the possibility of leakage in the cooling system is eliminated, and the high-voltage safety performance of the fuel cell system is well improved, providing a reference for future fuel cell cooling circuit design, better protect personal safety.

Key words: Insulation resistance; Fuel cell; High-voltage; Power safety