| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To retard deterioration of a high energy density battery in an electric car having a high output density battery and a high energy density battery, even in a situation where the opportunity to use the high energy density battery for running is low. <P>SOLUTION: An electric car 100 includes a first battery 12 (high output density battery) which can be charged from an external power supply and a second battery 22 (high energy density battery), and a controller 8 which controls charging of the battery. The controller 8 performs the following three steps. A power transfer step for charging the first battery 12 by using the second battery 22, prior to charging by using an external power supply. A first battery charging step for charging the first battery 12 by using an external power supply. A second battery charging step for charging the second battery 22 by using the external power supply. Deterioration of the second battery 22 is retarded by lowering the SOC thereof during the charging operation. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
