Battery charging device for mobile phone
US6057668A · kind A · utility
150Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1998 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | Oct 1, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a charging device for mobile phone wherein the battery can be charged by a secondary coil with current induced from a primary coil in a charging stage. The inventive charging device use magnetic induction, rather than metal contact, to transfer electrical energy to battery, therefore, the poor-contact problem in prior art can be prevented and the alignment tolerance between battery and charging device can be enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.