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Patent Searching and Data


Title:
CHARGING SYSTEM, CHARGING METHOD, AND POWER ADAPTER FOR TERMINAL
Document Type and Number:
WIPO Patent Application WO/2017/133409
Kind Code:
A1
Abstract:
A charging system, charging method, and power adapter (1) for a terminal (2). The charging system comprises the power adapter (1) and the terminal (2). The power adapter (1) comprises: a first rectifier unit (101), a switch unit (102), a transformer (103), a second rectifier unit (104), a first charging interface (105), a sampling unit (106), and a control unit (107). The control unit (107) outputs a control signal to the switch unit (102), and adjusts, according to a voltage sample value and/or a current sample value sampled by the sampling unit (106), the duty cycle of the control signal, such that the voltage of a third pulsating waveform outputted by the second rectifier unit (104) meets a charging requirement. The terminal (2) comprises a second charging interface (201) and a battery (202), and the second charging interface (201) is connected to the battery (202). When the second charging interface (201) is connected to the first charging interface (105), the second charging interface (201) applies the voltage of the third pulsating waveform to the battery (202), such that the voltage of the pulsating waveform outputted by the power adapter (1) is directly applied to the battery (202), thereby enabling miniaturization and a low cost of the power adapter (1), and increasing the service life of the battery (202).

Inventors:
ZHANG JIALIANG (CN)
WAN SHIMING (CN)
ZHANG JUN (CN)
TIAN CHEN (CN)
CHEN SHEBIAO (CN)
LI JIADA (CN)
Application Number:
PCT/CN2017/070724
Publication Date:
August 10, 2017
Filing Date:
January 10, 2017
Export Citation:
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Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
H02J7/02
Foreign References:
CN104917271A2015-09-16
CN203747451U2014-07-30
CN106026327A2016-10-12
CN106100083A2016-11-09
CN205882810U2017-01-11
CN205883072U2017-01-11
US20150263638A12015-09-17
Other References:
See also references of EP 3249778A4
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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