US Patent No. 10,923,938

CHARGING DEVICE AND CHARGING METHOD


Patent No. 10,923,938
Issue Date February 16, 2021
Title Charging Device And Charging Method
Inventorship Dezhong Yang, Nanjing (CN)
Yingdian Xiang, Nanjing (CN)
Hong Zhu, Nanjing (CN)
Zhijian Lu, Nanjing (CN)
Assignee Nanjing Chervon Industry Co., Ltd., Nanjing (CN)

Claim of US Patent No. 10,923,938

1. A charging device for charging an electric energy storage device, comprising:a power supply circuit, which is connected to a power supply;
an alternating current conversion circuit, which is configured to convert a current from the power supply connected to the power supply circuit to a first alternating current with a preset frequency value;
a capacitor electrically coupled between the power supply circuit and the alternating current conversion circuit;
a high-frequency transformer, which is configured to convert the first alternating current to a second alternating current, wherein the high-frequency ranges from 5 kHz to 1 MHz and a voltage value corresponding to the second alternating current is less than a voltage value corresponding to the first alternating current; and
a direct current voltage conversion circuit, which is configured to convert the second alternating current to a direct current with a waveform fluctuating in a preset range, so as to charge the electric energy storage device,
wherein the alternating current conversion circuit is connected to the power supply circuit, the transformer is connected to the alternating current conversion circuit, and the direct current voltage conversion circuit is connected to the transformer, and
wherein the capacitor is an electrolytic capacitor and the value range of the electrolytic capacitor (CY) is 330 nF