Electric power supply system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorNaoto MATSUSHITA
Life of this patent
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Abstract
An electric power supply system includes a charger, first and second high electric potential side lines, first and second diodes, a first battery and a first load, a second battery and a second load, a first switch, a second switch, and a control device. The control device is configured to switch the first switch to an open state and maintain the second switch in a close state when the first battery reaches a predetermined level or higher of a state of charge earlier than the second battery after the control device starts charging the first battery and the second battery.
Claims14
A charge control device configured to control a first switch configured to switch a state of electric connection between a first battery and a charger either an open state or a close state, the first battery and a second battery being disposed on a vehicle, the first battery and the second battery being charged by an external charger via the charger, the charge control device comprising at least one of a processor configured to:
- determine a state of charge the first battery;
- cause the first switch to switch to the close state;
- cause the first switch to switch to the open state when the first battery reaches a predetermined level or higher of the state of charge after starting charging the first battery and the second battery;
- and
- cause a second switch to keep to the close state when the processor determines that the second battery does not reach the predetermined level or higher of the state of charge, the second switch configured to switch the state of electric connection between the second battery and the charger either the open state or the close state.
A charge control device configured to control a first switch configured to switch a state of electric connection between a first battery and a charger either an open state or a close state, the first battery and a third battery being disposed on a vehicle, the first battery and the third battery being charged by an external charger via the charger, the charge control device comprising at least one of a processor configured to:
- determine a state of charge the first battery;
- cause the first switch to switch to the close state;
- cause the first switch to switch to the open state when the first battery reaches a predetermined level or higher of the state of charge after starting charging the first battery and the third battery;
- and
- set a target value of an output voltage of a voltage conversion device to a value of an open-circuit voltage of the third battery when the third battery reaches the predetermined level or higher of the state of charge earlier than the first battery after the processor starts charging the first battery and the third battery, the voltage conversion device and the third battery being connected electrically in series and connected in parallel with the first battery.
Dependencies are inferred from the claim text.