Title:
POWER FAILURE PROTECTION CIRCUIT AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/051255
Kind Code:
A1
Abstract:
The present application discloses a power failure protection circuit and an electronic device. The power failure protection circuit comprises a power-on switch module, a voltage holding module and a voltage measurement module; the voltage holding module is used for being charged on the basis of the voltage of an input end of the power failure protection circuit, and when the input end of the power failure protection circuit undergoes power failure, holding the voltage after charging; the voltage measurement module is used for measuring the voltage of the input end of the power failure protection circuit, and when the input end of the power failure protection circuit undergoes power failure, connecting the voltage holding module and the power-on switch module so as to accelerate switch-off of the power-on switch module. In the present application, when an electronic device is accidentally dropped and a connecting elastic sheet of a battery vibrates, resulting in poor contact of contacts, rapid voltage drop and fluctuation, and electric arc generation, the power-on switch module on a power supply path can be switched off to immediately cut off the current and prevent the electronic device from crashing; thus, the problem in existing protection circuits of slow action of protection circuits during hot swap of power supplies is solved.
Inventors:
ZHENG JINLONG (CN)
HUANG QIANG (CN)
ZHU JIANXUN (CN)
HUANG QIANG (CN)
ZHU JIANXUN (CN)
Application Number:
PCT/CN2023/100525
Publication Date:
March 14, 2024
Filing Date:
June 15, 2023
Export Citation:
Assignee:
HYTERA COMM CORP LTD (CN)
International Classes:
H02H3/24; H02H3/05; H02J7/00
Foreign References:
| CN102355046A | 2012-02-15 | |||
| CN201001039Y | 2008-01-02 | |||
| CN218472760U | 2023-02-10 | |||
| CN113659819A | 2021-11-16 | |||
| CN111509318A | 2020-08-07 | |||
| US20140097798A1 | 2014-04-10 |
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