| 摘要 |
PROBLEM TO BE SOLVED: To increase amount of charge in a vehicle as much as possible which comes from regenerative energy during controlling the regeneration, and extend a possible travel distance using a main battery Bm.SOLUTION: In an on-vehicle charge control device, a DCDC converter 16 is stopped in a case that a charging rate of a standby battery Ba is larger than a threshold value during traveling of a vehicle. Thereby, drain of electric power from a high-voltage system through the DCDC converter 16 to a low-voltage system is avoided so that a drop speed of a charging rate of a main battery Bm can be decreased and a travel distance by using the main battery Bm can be extended. Output of the DCDC converter 16 is maximized during controlling the regeneration so that the standby battery Ba with the low charging rate can sufficiently take in the regeneration energy. |
