| 摘要 |
<p>[Problem] Heating batteries using a heater leads to the size of the heater to become big and the power consumption of the heater to increase. [Solution] A battery pack (1) is provided with a heater (60) for generating heat and a first battery (10, 10A) and a second battery (10, 10B) which are electrically connected in parallel and which charge and discharge electricity. The first battery is capable of charging and discharging electricity at a larger current than the second battery. The second battery has a larger power storage capacity than the first battery. The heater is disposed on a position that is closer to the first battery than the second battery.</p> |
