| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide the battery control unit of an automobile for managing charging/discharging of a battery without using a temperature sensor. <P>SOLUTION: A battery temperature estimated value and an engine cooling water temperature immediately after an ignition-off are stored in a storage means 15d for holding a stored content even at an ignition-off time. Immediately after the ignition-off, a battery temperature estimated value stored in the storage means 15d is corrected based on the engine cooling water temperature immediately after the ignition-off stored in the storage means 15d and the engine cooling water temperature detected immediately after an ignition-on. Thus, the temperature of the battery 8 can be accurately estimated without providing a sensor for detecting the battery temperature, and the charging/discharging of the battery 8 can be managed according to the battery temperature estimated value. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
