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Vehicle-mounted power source device

  • US 9,768,639 B2
  • Filed: 10/22/2013
  • Issued: 09/19/2017
  • Est. Priority Date: 11/16/2012
  • Status: Active Grant
First Claim
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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:

  • a solar panel that converts sunlight into electrical power;

    a bidirectional buck-boost section that boosts or steps down the voltage of the electrical power obtained through the conversion by the solar panel;

    a low voltage battery;

    a control section that makes a control so as to charge the low voltage battery with the electrical power transformed by the bidirectional buck-boost section;

    a high voltage battery that stores electrical power having a voltage higher than the low voltage battery; and

    a boost section that boosts the voltage of the electrical power stored in the low voltage battery for charging the high voltage battery, wherein,when the amount of the electrical power stored in the low voltage battery is equal to or greater than a predetermined value, the control section makes a control so as to boost the electrical power stored in the low voltage battery, first by the bidirectional buck-boost section that boosts or steps down the voltage of the electrical power obtained through the conversion by the solar panel and then by the boost section, and to charge the high voltage battery with the boosted electrical power in multiple stages.

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