A to-be-charged device (12, 23, 7, 92), comprising: at least two receiving branches (121, 71, 1001), a charging control module (72, 923) and a battery (122, 924, 73), wherein each receiving branch (23a, 23b, 71a, 71b, 1001a, 1001b, 921, 922) of the at least two receiving branches (121, 71, 1001) is connected to the charging control module (72, 923) and the battery (122, 924, 73); each receiving branch (23a, 23b, 71a, 71b, 1001a, 1001b, 921, 922) is configured to couple to one transmitting branch (741, 914, 915, 22a, 22b, 741a, 741b) of a wireless charging device (2, 11, 74, 91) to receive an electromagnetic signal transmitted by the coupled transmitting branch (741, 914, 915, 22a, 22b, 741a, 741b) and configured to convert the received electromagnetic signal into a charging voltage and a charging current for charging the battery (122, 924, 73) of the to-be-charged device (12, 23, 7, 92); characterized in that, the charging control module (72, 923) is configured to generate feedback information based on at least one of charging parameters and provide the feedback information to the wireless charging device (2, 11, 74, 91), wherein the charging parameters comprise: a charging voltage of the battery (122, 924, 73), a charging current of the battery (122, 924, 73), a voltage of each receiving branch (23a, 23b, 71a, 71b, 1001a, 1001b, 921, 922) and a current of each receiving branch (23a, 23b, 71a, 71b, 1001a, 1001b, 921, 922); and the feedback information is configured to instruct the wireless charging device (2, 11, 74, 91) to adjust a transmitting power of the electromagnetic signal of each transmitting branch (741, 914, 915, 22a, 22b, 741a, 741b), the charging control module (72, 923) is further configured to: control the at least two receiving branches (121, 71, 1001) to operate simultaneously in response to the battery (122, 924, 73) being in the constant-current charging phase; and control, when the battery (122, 924, 73) is in a non-constant-current charging phase, one receiving branch of the at least two receiving branches (121, 71, 1001) to operate, and the remaining receiving branch of the at least two receiving branches (121, 71, 1001) other than the one receiving branch to stop operate. wherein each receiving branch (23a, 23b, 71a, 71b, 1001a, 1001b, 921, 922) of the at least two receiving branches (121, 71, 1001) is connected to the charging control module (72, 923) and the battery (122, 924, 73); each receiving branch (23a, 23b, 71a, 71b, 1001a, 1001b, 921, 922) is configured to couple to one transmitting branch (741, 914, 915, 22a, 22b, 741a, 741b) of a wireless charging device (2, 11, 74, 91) to receive an electromagnetic signal transmitted by the coupled transmitting branch (741, 914, 915, 22a, 22b, 741a, 741b) and configured to convert the received electromagnetic signal into a charging voltage and a charging current for charging the battery (122, 924, 73) of the to-be-charged device (12, 23, 7, 92); characterized in that, the charging control module (72, 923) is configured to generate feedback information based on at least one of charging parameters and provide the feedback information to the wireless charging device (2, 11, 74, 91), wherein the charging parameters comprise: a charging voltage of the battery (122, 924, 73), a charging current of the battery (122, 924, 73), a voltage of each receiving branch (23a, 23b, 71a, 71b, 1001a, 1001b, 921, 922) and a current of each receiving branch (23a, 23b, 71a, 71b, 1001a, 1001b, 921, 922); and the feedback information is configured to instruct the wireless charging device (2, 11, 74, 91) to adjust a transmitting power of the electromagnetic signal of each transmitting branch (741, 914, 915, 22a, 22b, 741a, 741b), the charging control module (72, 923) is further configured to: control the at least two receiving branches (121, 71, 1001) to operate simultaneously in response to the battery (122, 924, 73) being in the constant-current charging phase; and control, when the battery (122, 924, 73) is in a non-constant-current charging phase, one receiving branch of the at least two receiving branches (121, 71, 1001) to operate, and the remaining receiving branch of the at least two receiving branches (121, 71, 1001) other than the one receiving branch to stop operate. control the at least two receiving branches (121, 71, 1001) to operate simultaneously in response to the battery (122, 924, 73) being in the constant-current charging phase; and control, when the battery (122, 924, 73) is in a non-constant-current charging phase, one receiving branch of the at least two receiving branches (121, 71, 1001) to operate, and the remaining receiving branch of the at least two receiving branches (121, 71, 1001) other than the one receiving branch to stop operate.