SYSTEM AND METHOD FOR MAINTAINING INSULATION RESISTANCE OF FUEL CELL

A system for maintaining insulation resistance of a fuel cell includes a fuel cell stack, a coolant line that allows coolant to pass through the fuel cell stack, a circulation pump that circulates thecoolant in the coolant line, a deionizer that removes impurities or ions from the coolant in the coolant line, and a controller configured to measure the insulation resistance of a high-voltage terminal connected to the fuel cell stack, to determine whether recovery control is necessary based on the measured insulation resistance, and upon determining that recovery control is necessary, to control the circulation pump so as to change the flow of the coolant passing through the deionizer. 本申请提供一种保持燃料电池绝缘电阻的系统，包括：燃料电池组；冷却剂管线，其使冷却剂通过燃料电池组；循环泵，其使冷却剂在冷却剂管线中循环；脱离子器，其从冷却剂管线中的冷却剂中除去杂质或离子；和控制器，其配置成测量与燃料电池组连接的高电压端子的绝缘电阻，基于测量的绝缘电阻确定是否需要回收控制，并在确定需要回收控制时控制循环泵，以改变通过脱离子器的冷却剂流。