| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack capable of ensuring battery cooling performance by reducing the impact of external temperature.SOLUTION: A battery pack 1 comprises: a plurality of battery cells 3 connected to one another so as to be brought into electric conduction; a pack case 2 for housing the plurality of battery cells 3; an air blower 4 for circulating air through the inside of the pack case 2; a circulation passage 5 in the pack case 2; and a Peltier module 7. The circulation passage 5 is the passage inside the pack case 2 and forms a series of distribution passages where the air flown out of the air blower 4 is sucked back into the air blower 4 after heat exchange with the plurality of battery cells 3. The Peltier module 7 comprises: a first fin 73 which is arranged in the circulation passage 5 and absorbs, when brought into electric conduction, heat from the air; and a second fin 74 which is arranged outside the pack case 2 and discharges, when brought into electric conduction, the heat absorbed by the first fin 73 to the outside of the pack case 2. |
