Thermal management method and system for battery pack of hybrid vehicle

The invention discloses a thermal management method and system for a battery pack of a hybrid power vehicle, and the method comprises the steps: carrying out the real-time monitoring of the temperature of a high-voltage power battery and a low-voltage starting battery in the vehicle battery pack when an engine of the hybrid power vehicle is started; if it is monitored that the temperature of the high-voltage power battery and/or the low-voltage starting battery in the vehicle battery pack is not within the normal temperature range, performing thermal management operation on the high-voltage power battery and/or the low-voltage starting battery which are/is not within the normal temperature range, and enabling the temperature of the high-voltage power battery and/or the low-voltage starting battery at the abnormal temperature to be within a normal temperature range. A heating power source of the battery pack comes from the generator, the generator works along with the engine, and as long as the engine is start