US 12,244,166 B2
Charging case
Yunsen Lang, Shandong (CN)
Assigned to Goertek Inc., Shandong (CN)
Appl. No. 17/623,998
Filed by Goertek Inc., Shandong (CN)
PCT Filed Sep. 29, 2019, PCT No. PCT/CN2019/108946
§ 371(c)(1), (2) Date Dec. 30, 2021,
PCT Pub. No. WO2021/031297, PCT Pub. Date Feb. 25, 2021.
Claims priority of application No. 201910759569.9 (CN), filed on Aug. 16, 2019.
Prior Publication US 2022/0352733 A1, Nov. 3, 2022
Int. Cl. H02J 7/00 (2006.01); H04R 1/10 (2006.01)
CPC H02J 7/0044 (2013.01) [H02J 7/0048 (2020.01); H02J 7/00716 (2020.01); H02J 7/007182 (2020.01); H04R 1/1025 (2013.01); H02J 2207/20 (2020.01)] 13 Claims
OG exemplary drawing
 
1. A charging case for charging a to-be-charged device having a battery and a charging management chip, comprising a control module, a charging case battery and a voltage conversion module; wherein
the charging case battery is connected with the voltage conversion module; the voltage conversion module is configured for converting a direct current output by the charging case battery into a charging voltage and outputting the charging voltage to the charging management chip of the to-be-charged device so as to charge the battery of the to-be-charged device through the charging management chip;
the control module is configured to regulate the charging voltage output by the voltage conversion module according to a voltage of the battery of the to-be-charged device during charging thereof by;
calculating a charging voltage target value, the charging voltage target value being a sum value of a current voltage value of the battery of the to-be-charged device, a current voltage drop value of a charging pathway, and a charging threshold of the charging management chip; wherein the charging pathway is a pathway from an output end of the voltage conversion module to an input end of the charging management chip; and
regulating the charging voltage output by the voltage conversion module according to the charging voltage target value.