Importance

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Abstract

A start-up power supply is provided that includes a battery, a supercapacitor module, and a switch module coupling an output of the supercapacitor module to an output connected to terminals of a vehicle battery. A charging circuit is coupled between the battery and the supercapacitor module and also to the output. A control module is coupled to the charging circuit, the switching module, the battery, and the supercapacitor module. The control module configured to first charge the supercapacitor module until the voltage of the supercapacitor module is higher than a pre-charge voltage of the supercapacitor module. Then to connect the battery and the supercapacitor module in parallel enabling the voltage of the supercapacitor module to charge to a voltage of the battery. Finally, to charge the supercapacitor module until the voltage of the supercapacitor module reaches a voltage of a full threshold of the supercapacitor module.

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First Claim