Bilevel equalizer for battery cell charge management
US10862318B2 · kind B2 · utility
3Cited by
18References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 2017 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Jan 27, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An equalizer circuit provides both passive and active charge transfer between cells in a battery pack to improve charge and discharge efficiency. The equalizer circuit is a bilevel circuit that uses both resistive equalizers and switching equalizers to balance cell charge. The cells may be grouped into size limited sections which are balanced by resistive equalizers. The sections are balanced by switching equalizers to promote increased pack discharge capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.