Title:
CHARGING CIRCUIT, SYSTEM AND METHOD, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/032990
Kind Code:
A1
Abstract:
A charging circuit, system and method, and an electronic device. The charging circuit comprises a charge pump conversion module (14) comprising one or more charge pump conversion submodules (141, 142, …, 14N) that are connected in parallel. When receiving a first control signal delivered by a control module (12), each charge pump conversion submodule (141, 142, …, 14N) can turn on a first set of switches and turns off a second set of switches, so that an adaption module (11) can charge a capacitor in each charge pump conversion submodule (141, 142, …, 14N) and a battery module (13) that is connected to each charge pump conversion submodule (141, 142, …, 14N). When receiving a second control signal delivered by the control module (12), each charge pump conversion submodule (141, 142, …, 14N) can turn off the second set of switches and turn off the first set of switches, so that the capacitor in each charge pump conversion submodule (141, 142, …, 14N) can charge the battery module (13). Because a charging/discharging element in the charging circuit is a capacitor but not an inductor, the problems of low step-down conversion efficiency, small charging current and serious heating of a charging circuit caused by the inductor element can be avoided.
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Inventors:
HUANG CHANGSONG (CN)
CHEN LINFENG (CN)
LIU XIAOYONG (CN)
CHEN LINFENG (CN)
LIU XIAOYONG (CN)
Application Number:
PCT/CN2017/096200
Publication Date:
February 22, 2018
Filing Date:
August 07, 2017
Export Citation:
Assignee:
MEIZU TECH CO LTD (CN)
International Classes:
H02J7/00
Foreign References:
| CN106230051A | 2016-12-14 | |||
| CN106849645A | 2017-06-13 | |||
| CN105703423A | 2016-06-22 | |||
| CN204886693U | 2015-12-16 | |||
| CN101043177A | 2007-09-26 | |||
| CN102082505A | 2011-06-01 | |||
| US20150028803A1 | 2015-01-29 |
Other References:
See also references of EP 3499679A4
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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