Multiple battery pack and operating method thereof
US9738174B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Mar 18, 2014 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Nov 29, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium battery system includes a first battery pack including a plurality of first battery cells connected in series. The first battery pack is configured to be connected in parallel to an alternator and a second battery pack, and has a lower capacity than the second battery pack. A negative electrode of each of the first battery cells includes a negative electrode active material. The negative electrode active material includes a carbon-based material having an interlayer spacing of a (002) plane of 0.34 nm to 0.50 nm in X-ray diffraction measurement using copper (Cu) Kα lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.