Charging apparatus and charging method
US9160179B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 2013 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Feb 21, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0019
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Capacitor elements are connected in series and charged until a voltage between terminals of a capacitor element whose capacitance is lowest among the capacitor elements reaches a withstanding voltage. When the voltage between the terminals of the capacitor element reaches the withstanding voltage, the capacitor elements are connected in parallel, and electric charge of the capacitor element is transferred to the other capacitor elements. Hereafter, an operation of switching between series connection and parallel connection is repeated such that the capacitor elements are connected in series and charged again when the voltage between the terminals of the capacitor element is reduced to a full charge voltage due to an outflow of the electric charge, and the capacitor elements are connected in parallel when the voltage between the terminals of the capacitor element reaches the withstanding voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.