US 11,056,896 B2
Terminal and device
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 Aug. 31, 2017, as Appl. No. 15/691,961.
Claims priority of application No. PCT/CN2016/101943 (WO), filed on Oct. 12, 2016; and application No. PCT/CN2016/101944 (WO), filed on Oct. 12, 2016.
Prior Publication US 2018/0102658 A1, Apr. 12, 2018
Int. Cl. H02J 7/00 (2006.01)
CPC H02J 7/0044 (2013.01) [H02J 7/00 (2013.01); H02J 7/0013 (2013.01); H02J 7/0047 (2013.01); H02J 7/0063 (2013.01); H02J 7/0049 (2020.01); H02J 2207/20 (2020.01); H02J 2207/40 (2020.01)] 16 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 directly to both ends of multiple cells connected in series in the terminal to charge the multiple cells without voltage converting;
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;
wherein 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; and
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;
an equalization circuit coupled with the multiple cells, the equalization circuit is configured to equalize voltages among each cell of the multiple cells, wherein the multiple cells comprises a main cell and at least one secondary cell, the equalization circuit comprises at least one load each connected at both ends of each of at least one secondary cell to consume the power of the secondary cell, such that the power of the secondary cell is consistent with the main cell; and
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.