Patent ID: 9656662
Date: 2017-05-23
CPC Classifications: B60K,B60L,B60W,B60Y,G01R,Y02E,Y02T,Y10S

Claim:
1. A hybrid vehicle comprising: an internal combustion engine; a vehicle driving device configured to (i) generate a driving force for the hybrid vehicle by receiving electric power and (ii) generate electric power from power of the internal combustion engine; a secondary battery inputting and outputting electric power to and from the vehicle driving device; a current sensor detecting a current input to and output from the secondary battery; and an electronic control unit configured to (a) control charging and discharging of the secondary battery, (b) calculate, using a value detected by the current sensor, an evaluation value showing a degree of deterioration of the secondary battery attributable to a salt concentration bias of the secondary battery resulting from the charging and the discharging, and (c) execute a forced charging control to charge the secondary battery by using the internal combustion engine and the vehicle driving device in a case where a remaining capacity of the secondary battery is equal to or less than a first predetermined value, the forced charging control forcibly charging the secondary battery until the remaining capacity rises to a second predetermined value exceeding the first predetermined value, wherein stopping of the internal combustion engine is prohibited during the execution of the forced charging control, an absolute value of the evaluation value increases with a progress of the deterioration of the secondary battery, and the electronic control unit is configured to (1) use a first electric power as an electric charging power for charging the secondary battery when the absolute value of the evaluation value is equal to or lower than a first threshold, and (2) use a second electric power falling short of the first electric power as the electric charging power for charging the secondary battery when the absolute value of the evaluation value is higher than the first threshold, in a case where the forced charging control is executed while the hybrid vehicle is stopped and in a case where the evaluation value shows the degree of the deterioration of the secondary battery that is attributable to excessive charging.