Title:
METHOD FOR DETECTING CHANNEL IMPEDANCE, CHARGING INTERFACE DETECTION CIRCUIT STRUCTURE, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/008488
Kind Code:
A1
Abstract:
A method for detecting channel impedance, a charging interface detection circuit structure, and an electronic device (1). The electronic device (1) comprises a charging interface (102), a power source input node (103), and a logic control module (101). The logic control module (101) is configured to: control the power source input node (103) to be disconnected from a load (104); when an external power supply node (201) supplies power to the power source input node (103), detect the voltage of the power source input node (103) as a power supply voltage of the external power supply node (201); when the external power supply node (201) supplies power to the power source input node (103), control a current between the power source input node (103) and the ground to be a first current, and detect a first voltage of the power source input node (103) at this time; and according to the power supply voltage, the first voltage, and the first current, determine channel impedance generated after the charging interface (102) and a power supply interface (202) are interfaced. Therefore, a power supply voltage is not required to learnt about from an external power source by means of a communication line, such that problems caused by communication lines are avoided.
Inventors:
TAO HONGXIA (CN)
Application Number:
PCT/CN2020/101635
Publication Date:
January 21, 2021
Filing Date:
July 13, 2020
Export Citation:
Assignee:
SHANGHAI YAOHUO MICROELECTRONICS CO LTD (CN)
International Classes:
H02J7/00; H01M10/42
Domestic Patent References:
| WO2016183802A1 | 2016-11-24 |
Foreign References:
| CN110266082A | 2019-09-20 | |||
| CN209994141U | 2020-01-24 | |||
| CN106712219A | 2017-05-24 | |||
| CN107872075A | 2018-04-03 | |||
| CN109245244A | 2019-01-18 | |||
| US20190081492A1 | 2019-03-14 |
Attorney, Agent or Firm:
SHANGHAI HUIHAN INTELLECTUAL PROPERTY LAW FIRM (CN)
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