Title:
CHARGER
Document Type and Number:
WIPO Patent Application WO/2018/068323
Kind Code:
A1
Abstract:
A charger. The charger actively sends a detection signal by means of a detection signal generation circuit (300). A feedback circuit (500) detects a level signal of a sampling device (400) and generates a feedback signal according to the level signal. A switch device (100) controls the charger so that same outputs a charging voltage according to the feedback signal. When the level signal satisfies a pre-set condition (the pre-set condition is a pre-set condition that is satisfied by a level signal when a short-circuit abnormality occurs in a charging interface (700)), the switch device (100) controls the charger so that same stops to output the charging voltage, thereby realizing active detection of whether a short-circuit abnormality occurs in the charging interface (700) of the charger due to an abnormal decrease in impedance caused by water ingress or a foreign matter, and effectively preventing the problem that the charger or a charged device is damaged.
Inventors:
YU WENCHAO (CN)
WEN CHONG (CN)
WEN CHONG (CN)
Application Number:
PCT/CN2016/102196
Publication Date:
April 19, 2018
Filing Date:
October 14, 2016
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02J7/04
Foreign References:
| CN104767260A | 2015-07-08 | |||
| CN205610274U | 2016-09-28 | |||
| CN103532187A | 2014-01-22 | |||
| CN101945534A | 2011-01-12 | |||
| US9246342B2 | 2016-01-26 |
Other References:
See also references of EP 3522332A4
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