US 12,301,103 B2
Charging power supply circuit and control method of same
Jun Liu, Guangdong (CN); Yingying Feng, Guangdong (CN); Shun Yao, Guangdong (CN); Jinzhu Xu, Guangdong (CN); and Yuanzhao Zhang, Guangdong (CN)
Assigned to SHENZHEN VMAX NEW ENERGY CO., LTD., Guangdong (CN)
Filed by SHENZHEN VMAX NEW ENERGY CO., LTD., Guangdong (CN)
Filed on Nov. 23, 2022, as Appl. No. 17/993,049.
Application 17/993,049 is a continuation of application No. PCT/CN2020/134078, filed on Dec. 4, 2020.
Claims priority of application No. 202010482335.7 (CN), filed on Jun. 1, 2020.
Prior Publication US 2023/0088663 A1, Mar. 23, 2023
Int. Cl. H02M 3/335 (2006.01); H02M 1/08 (2006.01); H02M 1/42 (2007.01); H02M 7/219 (2006.01)
CPC H02M 1/4233 (2013.01) [H02M 1/08 (2013.01); H02M 3/3353 (2013.01); H02M 7/219 (2013.01); H02J 2207/20 (2020.01)] 9 Claims
OG exemplary drawing
 
1. A charging power supply circuit, comprising a PFC circuit, a driver module, and a high-voltage output circuit and a low-voltage output circuit both connected to said PFC circuit, wherein said PFC circuit is connected to AC mains, and said drive module is used to set an operation range of said PFC circuit, wherein the operation range of said PFC circuit is

OG Complex Work Unit Math
where n is a natural number, f is a frequency of an input AC voltage, and Tpfc is an operation time of the switch transistor of said PFC circuit within a half current cycle, and the operation time Tpfc of the switch transistor of said PFC circuit is obtained according to the calculation of the following formula,

OG Complex Work Unit Math
where Vin is a rms value of voltage, Iin is a rms value of current, Po2 is the output power of said low-voltage output circuit, and Po is the total output power of said charging power supply circuit.