Title:
WIRELESS CHARGING CIRCUIT WITH CONSTANT-CURRENT CONSTANT-VOLTAGE COMPOUND TOPOLOGY
Document Type and Number:
WIPO Patent Application WO/2018/126617
Kind Code:
A1
Abstract:
A wireless charging circuit with a constant-current constant-voltage compound topology. In the wireless charging circuit, a primary-side compensation module (31) comprises a first inductor (L1) and a first resonant capacitor (C1); a first end of the first resonant capacitor (C1) is connected with a first output end of a high-frequency inverter circuit (2), a second end of the first resonant capacitor (C1) is connected with a first end of the first inductor (L1), and a second end of the first inductor (L1) is connected with a second output end of the high-frequency inverter circuit (2); a secondary-side compensation module (32) comprises a second inductor (L2), a second resonant capacitor (C2), a third resonant capacitor (C3), and a switch (S1); a first end of the second resonant capacitor (C2) is connected with a first input end of a second rectifying circuit (4), a second end of the second resonant capacitor (C2) is connected with a first end of the second inductor (L2), a second end of the second inductor (L2) is connected with a second input end of the second rectifying circuit (4), and the switch (S1) and the third resonant capacitor (C3) are connected in series between the first end of the second resonant capacitor (C2) and the second end of the second inductor (L2). The wireless charging circuit with the constant-current constant-voltage compound topology has the advantages of fewer switches, small circuit size, simplicity in control and high output power and transmission efficiency.
Inventors:
LEI YANTING (CN)
LI JIANHUA (CN)
YUAN QINGMIN (CN)
RU YONGGANG (CN)
LI JIANHUA (CN)
YUAN QINGMIN (CN)
RU YONGGANG (CN)
Application Number:
PCT/CN2017/090443
Publication Date:
July 12, 2018
Filing Date:
June 28, 2017
Export Citation:
Assignee:
XIAN TGOOD INTELLIGENT CHARGING TECH CO LTD (CN)
International Classes:
B60L11/18; H02J7/04; H02M1/42; H02M7/5383
Domestic Patent References:
| WO2013012508A1 | 2013-01-24 |
Foreign References:
| CN104682580A | 2015-06-03 | |||
| CN106740220A | 2017-05-31 | |||
| CN206406776U | 2017-08-15 | |||
| CN102856964A | 2013-01-02 | |||
| US20160294223A1 | 2016-10-06 |
Attorney, Agent or Firm:
XI'AN TONG DA PATENT AGENCY CO., LTD. (CN)
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