Precision battery pack circuits
US7808131B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2006 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Apr 18, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery pack connection scheme is shown that provides an synchronized DC environment for every cell in the pack, such that every cell in the same or similar voltage level in the pack sees exactly the same voltage and current environment. In some embodiments, a pack is provided having a positive load connection terminal and multiple batteries connected in parallel to the terminal. The connections are made via respective conductive paths each including a high-power DC precision cable segment, each of the conductive paths having a resistance suitable to allow an average charge acceptance rate of the battery pack to be greater than a one-hour, or “C1”, charge rate. The precision cable segments preferably have matching impedances, or have matching DC resistances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.