Charging system and method for terminal, power adapter and charging device
US10727687B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2016 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Jul 26, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/458
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure discloses a charging method, a power adapter and a charging device. The power adapter includes: a first rectification unit, configured to rectify a first alternating current and output a voltage with a first pulsating waveform; a switch unit, configured to modulate the voltage according to a control signal; a transformer, configured to output a plurality of voltages with pulsating waveforms according to the modulated voltage; a synthesizing unit, configured to synthesis the plurality of voltages to output a second alternating current; a sampling unit, configured to sample voltage and/or current of the second alternating current to obtain a voltage sampling value and/or a current sampling value;and a control unit, configured to output the control signal to the switch unit, and to adjust a duty ratio of the control signal according to the current sampling value and/or the voltage sampling value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.