Power source device
AssigneesAutonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
InventorKazushi FUKAE
Life of this patent
Estimating the term…
Abstract
A power source device, capable of charging a power storage device using power from a power source, is realized with a configuration capable of suppressing the generation of heat and noise. The power source includes a controller that determines an output state of a power storage device on the basis of a detection value detected by a voltage detection circuit. When the output state of the power storage device corresponds to a prescribed high-voltage state when prescribed charging conditions are satisfied, the controller causes only a first charging circuit, among the first charging circuit and a second charging circuit, to operate. When the output state corresponds to a prescribed low-voltage state, the controller causes only the second charging circuit to operate.
Claims6
A power source device comprising:
- a first charging circuit including a first switching element, the first switching element being provided in a first energizing path between a power source and a power storage device and switching the first energizing path between an energized state and a non-energized state, and a resistor, a charging current based on power from the power source flowing in the resistor when the first switching element is in the energized state;
- a second charging circuit, including a second switching element provided in a second energizing path between the power source and the power storage device, that through on-off operations of the second switching element converts an input voltage applied to an input-side conduction path electrically connected to the power source, and outputs the input voltage to an output-side conduction path electrically connected to the power storage device;
- a detection circuit that detects a value reflecting an output voltage of the power storage device;
- and
- a controller that determines an output state of the power storage device on the basis of the detection value detected by the detection circuit, and in the case where the output state of the power storage device corresponds to a prescribed high-voltage state when prescribed charging conditions are satisfied, causes only the first charging circuit, among the first charging circuit and the second charging circuit, to operate, and in the case where the output state of the power storage device does not correspond to the prescribed high-voltage state when the prescribed charging conditions are satisfied, causes at least the second charging circuit, among the first charging circuit and the second charging circuit, to operate.
A power source device comprising:
- a first charging circuit including a first switching element, the first switching element being provided in a first energizing path between a power source and a power storage device and switching the first energizing path between an energized state and a non-energized state, and a resistor, a charging current based on power from the power source flowing in the resistor when the first switching element is in the energized state;
- a second charging circuit, including a second switching element provided in a second energizing path between the power source and the power storage device, that through on-off operations of the second switching element converts an input voltage applied to an input-side conduction path electrically connected to the power source, and outputs the input voltage to an output-side conduction path electrically connected to the power storage device;
- a detection circuit that detects a value reflecting an output voltage of the power storage device;
- and
- a controller that determines an output state of the power storage device on the basis of the detection value detected by the detection circuit, and in the case where the output state of the power storage device corresponds to a prescribed low-voltage state when prescribed charging conditions are satisfied, causes only the second charging circuit, among the first charging circuit and the second charging circuit, to operate, and in the case where the output state of the power storage device does not correspond to the prescribed low-voltage state when the prescribed charging conditions are satisfied, causes at least the first charging circuit, among the first charging circuit and the second charging circuit, to operate.
Dependencies are inferred from the claim text.