US Patent No. 10,923,922

ENERGY BALANCING CIRCUIT AND ENERGY BALANCING APPARATUS


Patent No. 10,923,922
Issue Date February 16, 2021
Title Energy Balancing Circuit And Energy Balancing Apparatus
Inventorship Rui Yang, Shanghai (CN)
Chengbin Ma, Shanghai (CN)
Xiaokang Liu, Shanghai (CN)
Assignee Huawei Technologies Co., Ltd., Shenzhen (CN)

Claim of US Patent No. 10,923,922

1. An energy balancing circuit, the energy balancing circuit comprising a coupling branch and a receiving branch connected to the coupling branch, wherein the coupling branch comprises one sending coil and at least one receiving coil, wherein each of the at least one receiving coil is coupled to the sending coil in an electromagnetic induction manner, wherein the receiving branch comprises at least one receiving subbranch, wherein each receiving coil is uniquely connected to one of the at least one receiving subbranch, wherein each of the at least one receiving subbranch comprises a rectifier branch, wherein a first receiving subbranch in the at least one receiving subbranch comprises a first boost branch connected to both a first rectifier branch and a first receiving coil, wherein the first rectifier branch is a rectifier branch in the first receiving subbranch, and wherein the first receiving coil is a receiving coil connected to the first receiving subbranch,wherein the first boost branch is configured to increase a first value when there is an energy difference between a first charging/discharging device connected to the first rectifier branch and a second charging/discharging device connected to a second rectifier branch, wherein the second rectifier branch is a rectifier branch in a second receiving subbranch, wherein the second receiving subbranch is any receiving subbranch other than the first receiving subbranch in the at least one receiving subbranch, wherein the first value is a ratio of a first impedance difference to a first terminal voltage difference, wherein the first impedance difference is a difference between an impedance of the first receiving subbranch and an impedance of the second receiving subbranch, and wherein the first terminal voltage difference is a difference between an terminal voltage of the first charging/discharging device and an terminal voltage of the second charging/discharging device.