Vehicle-mounted power source apparatus
First Claim
1. A vehicle-mounted power source apparatus that charges a battery with electrical power obtained by solar power generation, the apparatus comprising:
- a low voltage battery;
a high voltage battery that stores electrical power having a voltage higher than the low voltage battery;
a solar panel that converts sunlight into electrical power;
a buck-boost section that boosts or steps down the voltage of the electrical power obtained through the conversion by the solar panel;
a boost section that boosts the voltage of the electrical power boosted or stepped down by the buck-boost section; and
a control section that charges the low voltage battery with the electrical power boosted or stepped down by the buck-boost section, and that performs switching so as to charge the high voltage battery with the electrical power boosted by the boost section when the amount of electrical power stored in the low voltage battery is equal to or greater than a predetermined value.
2 Assignments
0 Petitions
Accused Products
Abstract
In the present invention, when charging both a high-voltage battery and a low-voltage battery by means of electrical power obtained by means of solar generation, by means of prioritizing the charging of the low-voltage battery over the charging of the high-voltage battery, a decrease in charging efficiency of the battery overall is suppressed. The vehicle-mounted power source device charges batteries by means of electrical power obtained by means of solar generation. A solar panel converts sunlight into electrical power. A DC/DC boost converter boosts the power converted by the solar panel. A control unit causes switching in a manner so that the high-voltage battery is charged by the electrical power boosted by the DC/DC boost converter when charging the low-voltage battery by means of the power converted by the solar panel and the amount of accumulated electrical power accumulated at the low-voltage battery is at least a predetermined value.
17 Citations
6 Claims
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1. A vehicle-mounted power source apparatus that charges a battery with electrical power obtained by solar power generation, the apparatus comprising:
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a low voltage battery; a high voltage battery that stores electrical power having a voltage higher than the low voltage battery; a solar panel that converts sunlight into electrical power; a buck-boost section that boosts or steps down the voltage of the electrical power obtained through the conversion by the solar panel; a boost section that boosts the voltage of the electrical power boosted or stepped down by the buck-boost section; and a control section that charges the low voltage battery with the electrical power boosted or stepped down by the buck-boost section, and that performs switching so as to charge the high voltage battery with the electrical power boosted by the boost section when the amount of electrical power stored in the low voltage battery is equal to or greater than a predetermined value. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification