HEAT DISSIPATION DEVICE AND BATTERY PACK

The utility model discloses a heat dissipation device and a battery pack, the heat dissipation device comprises a high temperature heat absorption assembly and a low temperature heat absorption assembly, and heat conduction is generated between the high temperature heat absorption assembly and the low temperature heat absorption assembly; the high-temperature heat absorption assembly is a water cooling assembly, and the low-temperature heat absorption assembly comprises a plurality of heat dissipation blocks which are arranged in the horizontal direction and made of phase change materials. According to the utility model, the high-temperature heat absorption assembly absorbs heat and cools the part, close to the electrode, in the battery; the low-temperature heat absorption assembly absorbsheat and cools the part, away from the electrode, in the battery; the water cooling assembly is used as a high-temperature heat absorption assembly; therefore, the high-temperature heat absorption assembly is high in heat ab