HIGH-VOLTAGE BATTERY CHARGING SYSTEM AND CHARGER WITH SUCH CHARGING SYSTEM
First Claim
1. A high-voltage battery charging system, comprising:
- a rectifier circuit connected with a common terminal for rectifying an AC input voltage into a rectified voltage;
a power factor correction circuit connected to said rectifier circuit for increasing a power factor of said rectified voltage and generating a bus voltage;
a bus capacitor connected between an output terminal of said power factor correction circuit and said common terminal for energy storage and voltage stabilization;
an intermediate non-isolated DC-DC converting circuit connected with said output terminal of said power factor correction circuit and said bus capacitor for boosting said bus voltage into an intermediate output voltage;
an intermediate output capacitor connected between an output terminal of said intermediate non-isolated DC-DC converting circuit and said common terminal for energy storage and voltage stabilization; and
a non-isolated DC-DC converting circuit connected with said output terminal of said intermediate non-isolated DC-DC converting circuit, said intermediate output capacitor and a high-voltage battery unit for converting said intermediate output voltage into a high charging voltage, thereby charging said high-voltage battery unit.
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Accused Products
Abstract
A high-voltage battery charging system includes a rectifier circuit, a power factor correction circuit, a bus capacitor, an intermediate non-isolated DC-DC converting circuit, an intermediate output capacitor, and a non-isolated DC-DC converting circuit. The rectifier circuit is used for rectifying an AC input voltage into a rectified voltage. The power factor correction circuit is used for increasing a power factor of the rectified voltage and generating a bus voltage. The bus capacitor is used for energy storage and voltage stabilization. The intermediate non-isolated DC-DC converting circuit is used for boosting the bus voltage into an intermediate output voltage. The intermediate output capacitor is connected between an output terminal of the intermediate non-isolated DC-DC converting circuit and the common terminal COM for energy storage and voltage stabilization. The non-isolated DC-DC converting circuit is used for converting the intermediate output voltage into a high charging voltage, thereby charging the high-voltage battery unit.
25 Citations
16 Claims
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1. A high-voltage battery charging system, comprising:
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a rectifier circuit connected with a common terminal for rectifying an AC input voltage into a rectified voltage; a power factor correction circuit connected to said rectifier circuit for increasing a power factor of said rectified voltage and generating a bus voltage; a bus capacitor connected between an output terminal of said power factor correction circuit and said common terminal for energy storage and voltage stabilization; an intermediate non-isolated DC-DC converting circuit connected with said output terminal of said power factor correction circuit and said bus capacitor for boosting said bus voltage into an intermediate output voltage; an intermediate output capacitor connected between an output terminal of said intermediate non-isolated DC-DC converting circuit and said common terminal for energy storage and voltage stabilization; and a non-isolated DC-DC converting circuit connected with said output terminal of said intermediate non-isolated DC-DC converting circuit, said intermediate output capacitor and a high-voltage battery unit for converting said intermediate output voltage into a high charging voltage, thereby charging said high-voltage battery unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification