Electronic control method for a planar inductive battery charging apparatus
USRE45651E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2014 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Jul 23, 2034 |
Classification
- Technology area (CPC —)General
Abstract
This invention provides an electronic control method for a planar inductive battery charging apparatus on which one or more electronic loads such as mobile phones, MP3 players etc can be placed and charged simultaneously. The power control circuit of the charging pad consists of two power conversion stages. Depending on the nature of the input power supply, the first power stage is an AC-DC power converter with variable output voltage control and a second stage is a DC-AC power inverter with constant current control. The combination of the two stages provides power control of the charging pad and generates AC magnetic flux of ideally constant magnitude over the charging areas within a group of primary windings that are excited.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.