| 摘要 |
<P>PROBLEM TO BE SOLVED: To appropriately determine capacity deterioration of a secondary battery even when the secondary battery is installed in a vehicle. <P>SOLUTION: A secondary battery deterioration determination system of the present invention comprises: a voltage sensor for detecting a voltage of the secondary battery; a pressure sensor for detecting an internal pressure of the secondary battery; and a control device for calculating capacity deterioration of the secondary battery. The control device calculates capacity deterioration of the secondary battery according to pressure fluctuations between an internal pressure in a predetermined reference state corresponding to a voltage value detected by the voltage sensor and an internal pressure detected by the pressure sensor, by using first relation data of the voltage and the internal pressure of the secondary battery in the predetermined reference state and second relation data of the internal pressure and the battery capacity of the secondary battery. <P>COPYRIGHT: (C)2013,JPO&INPIT |
