US 12,444,995 B2
Wireless charging device, to-be-charged device, and charging
Jun Yang, Guangdong (CN); and Shiming Wan, Guangdong (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Mar. 22, 2022, as Appl. No. 17/701,227.
Application 17/701,227 is a continuation of application No. PCT/CN2020/127553, filed on Nov. 9, 2020.
Claims priority of application No. 201911115135.1 (CN), filed on Nov. 14, 2019.
Prior Publication US 2022/0216738 A1, Jul. 7, 2022
Int. Cl. H02J 50/80 (2016.01); H02J 7/00 (2006.01); H02J 7/02 (2016.01); H02J 50/12 (2016.01); H02J 50/40 (2016.01); H04W 76/10 (2018.01)
CPC H02J 50/80 (2016.02) [H02J 7/0029 (2013.01); H02J 7/0048 (2020.01); H02J 7/00712 (2020.01); H02J 7/02 (2013.01); H02J 50/12 (2016.02); H02J 50/402 (2020.01); H02J 2207/20 (2020.01); H04W 76/10 (2018.02)] 19 Claims
OG exemplary drawing
 
1. A to-be-charged device, comprising: at least two receiving branches, a charging control module and a battery,
wherein each receiving branch of the at least two receiving branches is connected to the charging control module and the battery;
each receiving branch is configured to couple to one transmitting branch of a wireless charging device to receive an electromagnetic signal transmitted by the coupled transmitting branch and configured to convert the received electromagnetic signal into a charging voltage and a charging current for charging the battery of the to-be-charged device;
the charging control module is configured to generate feedback information based on at least one of charging parameters and provide the feedback information to the wireless charging device,
wherein the charging parameters comprise: a charging voltage of the battery, a charging current of the battery, a voltage of each receiving branch and a current of each receiving branch; and
the feedback information is configured to instruct the wireless charging device to adjust a transmitting power of the electromagnetic signal of each transmitting branch;
wherein the charging control module is further configured to control at least one of the at least two receiving branches to operate based on a charging phase of the battery to charge the battery; the charging phase comprises: a constant-current charging phase and a constant-voltage charging phase;
the charging control module is further configured to:
control the at least two receiving branches to operate simultaneously in response to the battery being in a constant-current charging phase; and
control at least one of the at least two receiving branches to operate when the battery is in a non-constant-current charging phase.