US 11,689,029 B2
Terminal with charging circuit and device thereof
Jialiang Zhang, Guangdong (CN); Shiming Wan, Guangdong (CN); Jiada Li, Guangdong (CN); Jun Zhang, Guangdong (CN); Chen Tian, Guangdong (CN); and Shebiao Chen, Guangdong (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Dongguan (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Jun. 2, 2021, as Appl. No. 17/336,563.
Application 17/336,563 is a continuation of application No. 15/691,961, filed on Aug. 31, 2017, granted, now 11,056,896.
Claims priority of application No. PCT/CN2016/101944 (WO), filed on Oct. 12, 2016; and application No. PCT/CN2018/101943 (WO), filed on Oct. 12, 2016.
Prior Publication US 2021/0296910 A1, Sep. 23, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/46 (2006.01); H02J 7/00 (2006.01)
CPC H02J 7/00034 (2020.01) [H02J 7/00 (2013.01); H02J 7/0013 (2013.01); H02J 7/0044 (2013.01); H02J 7/0063 (2013.01); H02J 7/00711 (2020.01); H02J 7/007182 (2020.01); H02J 7/0016 (2013.01); H02J 7/0049 (2020.01); H02J 2207/20 (2020.01); H02J 2207/40 (2020.01)] 17 Claims
OG exemplary drawing
 
1. A terminal, comprising:
a charging interface;
a first charging circuit, coupled with the charging interface, and configured to receive an output voltage from an adapter and apply the output voltage to both ends of multiple cells connected in series in the terminal to charge the multiple cells without voltage converting; and
a second charging circuit comprising a step-up circuit, the step-up circuit having a first end coupled with the charging interface and a second end coupled with the multiple cells, wherein
the step-up circuit is configured to receive the output voltage of the adapter via the charging interface, step up the output voltage of the adapter to a second voltage, and apply the second voltage to both ends of the multiple cells for charging; and
the output voltage of the adapter is received by the second charging circuit being less than an overall voltage of the multiple cells, the second voltage being greater than the overall voltage of the multiple cells;
wherein the first charging circuit is operable in a quick charging mode, the second charging circuit is operable in a normal charging mode, and a charging speed of the terminal in the quick charging mode is higher than the charging speed of the terminal in the normal charging mode;
wherein the terminal further comprises an equalization circuit, the equalization circuit is coupled with the multiple cells and is configured to equalize voltages among each cell of the multiple cells;
wherein the terminal further comprises a control unit configured to:
perform two-way communication with the adapter to determine a charging mode; and
switch between the first charging circuit to charge the multiple cells through the first charging circuit upon determining that the terminal will be charged with the quick charging mode and the second charging circuit to charge the multiple cells through the second charging circuit upon determining that terminal will be charged with the normal charging mode.