Patent ID: 11897363
Assignee: PRIME PLANET ENERGY & SOLUTIONS, INC.
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 16:
17. A vehicle driving system comprising:
a first battery;
a second battery;
a drive motor-generator connected to the first battery and the second battery via respective relays;
a power receiving unit connected to the first battery and the second battery via respective relays and also connected to an external power supply,
wherein
the first battery is configured to be charged and discharged at a current rate of higher than or equal to 5 C;
the second battery has a higher capacity than the first battery; and

a controller configured to:
when the power receiving unit is connected to the external power supply,
cause the first battery to be charged if the state of charge of the first battery is lower than a predetermined SOC, and
cause the second battery to be charged if the state of charge of the first battery is higher than or equal to the predetermined SOC; and

cause the first battery to be charged from the second battery when both the first battery and the second battery are disconnected from the drive motor-generator and the state of charge of the first battery is lower than a predetermined SOC.