Method and apparatus for ultrarapidly charging a battery
US5801515A · kind A · utility
Inventors
Key dates
| Filing date | Jul 30, 1997 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Jul 30, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00711
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for ultrarapidly charging primary or secondary battery. Charging current is multiple-frequency complex pulse current which is comprised of pulse current overlapped by pulse current with at least two different frequency band and arbitrary waveform and opposite narrow pulse whose amplitude is three times higher than amplitude of said pulse current. The charging current may be larger than 1.5C10 and charging is performed in a manner of no discharging. Charging circuit is comprised of at least two different frequency oscillators, switch circuit and opposite narrow pulse generating circuit. The pulse current of different frequency may overlap each other, modulated and scanned and varied on frequency to generate multiple-frequency complex charging current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.