Title:
WIRELESS CHARGING TRANSMITTING END AND RECEIVING END, METHODS THEREFOR, AND WIRELESS CHARGING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/120726
Kind Code:
A1
Abstract:
A wireless charging transmitting end and receiving end, methods therefor, and a wireless charging system, applied to the technical field of electric cars. A transmitting end controller (101) compares an actual output current of an inverter (H1) with a preset upper limit value of an output current of the inverter (H1), and controls an output voltage of the inverter (H1) according to the comparison result to adjust a current of an emitting coil (Lp), so that the actual output current of the inverter (H1) is less than or equal to the preset upper limit value of the output current of the inverter (H1). A receiving end controller (201) receives a current sampling value of the emitting coil (Lp) sent by the transmitting end controller (101). When the difference between the current sampling value of the emitting coil (Lp) and a current reference value of the emitting coil (Lp) is greater than or equal to a preset value, the current reference value of the emitting coil (Lp) is updated, so that the actual output current of the inverter (H1) is less than or equal to the preset upper limit value of the output current of the inverter (H1). A receiving end interacts with a transmitting end to achieve better control, and is enabled to have a large adjustment range of the current of the emitting coil as far as possible while ensuring that the output current of the inverter (H1) does not exceed the preset upper limit value.
Inventors:
CHEN SHUANGQUAN (CN)
WU ZHIXIAN (CN)
MAO YUNHE (CN)
ZENG XIAOSHENG (CN)
YOU HONGCHENG (CN)
WU ZHIXIAN (CN)
MAO YUNHE (CN)
ZENG XIAOSHENG (CN)
YOU HONGCHENG (CN)
Application Number:
PCT/CN2020/115005
Publication Date:
June 24, 2021
Filing Date:
September 14, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02J7/02; B60L53/12; B60L53/122; H02J7/00; H02J50/10
Foreign References:
| CN111016694A | 2020-04-17 | |||
| CN110707767A | 2020-01-17 | |||
| CN106374578A | 2017-02-01 | |||
| CN108471173A | 2018-08-31 | |||
| CN108649712A | 2018-10-12 | |||
| CN110311476A | 2019-10-08 | |||
| US20180194237A1 | 2018-07-12 | |||
| CN201911303839A | 2019-12-17 |
Other References:
See also references of EP 4075639A4
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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