Patent · US Active

Battery equalization method and system, vehicle, storage medium, and electronic device

US11292360B2 · kind B2 · utility

1Cited by
0References
18Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 31, 2018
Grant dateApr 5, 2022
Priority date
Expiry dateFeb 2, 2039

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH02J7/0019
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

A battery equalization method includes: obtaining a voltage value of a to-be-equalized cell in a battery pack; obtaining a reference voltage value required for equalization; determining a target equalization duration of the to-be-equalized cell according to a voltage value of the to-be-equalized cell, the reference voltage value, and a preset equalization duty cycle, where the equalization duty cycle is a ratio of an equalization period in a unit cycle to the unit cycle, and the unit cycle includes the equalization period and a sampling period; and controlling equalization of the to-be-equalized cell in the equalization period in the unit cycle according to the target equalization duration. According to this method, sampling is separated from equalization in a unit cycle, thereby ensuring accuracy of collected battery information, making the calculated equalization duration relatively accurate, and improving equalization effects of the battery pack.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.