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US 2018/0019611 A1Published application
Charging Method, Charging System, and Power Adapter
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorsJialiang Zhang, Chen Tian, Jun Zhang, Shebiao Chen, Shiming Wan, Jiada Li
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Abstract
A charging system, a charging method, and a power adapter are provided. The power adapter includes a battery, a first rectification unit, a transformer, a synthesis unit, a first charging interface, a sampling unit, and a modulation and control unit. The modulation and control unit is configured to modulate a voltage of a first pulsating waveform according to a voltage sampling value obtained by the sampling unit, such that a second AC output from the synthesis unit meets charging requirements.
Claims23
A charging system, comprising:
- a battery;
- a first rectification unit, configured to rectify an input alternating current (AC) and output a voltage of a first pulsating waveform;
- a transformer;
- a synthesis unit, configured to synthesize voltages of multiple pulsating waveforms output at a secondary side of the transformer and output a second AC for charging the battery, wherein an absolute value of a peak voltage of a positive half of each cycle of the second AC is greater than an absolute value of a valley voltage of a negative half;
- a sampling unit, configured to sample a voltage of the second AC to obtain a voltage sampling value;
- and
- a modulation and control unit, configured to modulate the voltage of the first pulsating waveform according to the voltage sampling value and to apply the voltage of the modulated first pulsating waveform to a primary side of the transformer, and the transformer being configured to convert the voltage of the modulated first pulsating waveform to the voltages of the multiple pulsating waveforms, such that the second AC meets charging requirements.
4 more elements
A power adapter, comprising:
- a first rectification unit, configured to rectify an input alternating current (AC) and output a voltage of a first pulsating waveform;
- a transformer;
- a synthesis unit, configured to synthesize voltages of multiple pulsating waveforms output at a secondary side of the transformer and output a second AC, wherein an absolute value of a peak voltage of a positive half of each cycle of the second AC is greater than an absolute value of a valley voltage of a negative half, wherein the second AC is applied to a battery of a terminal;
- a sampling unit, configured to sample a voltage of the second AC to obtain a voltage sampling value;
- and
- a modulation and control unit, configured to modulate the voltage of the first pulsating waveform according to the voltage sampling value and to apply the voltage of the modulated first pulsating waveform to a primary side of the transformer, and the transformer being configured to convert the voltage of the modulated first pulsating waveform to the voltages of the multiple pulsating waveforms, such that the second AC meets charging requirements.
3 more elements
A charging method, comprising:
- performing a first rectification on an input AC to output a voltage of a first pulsating waveform, when a power adapter charges a terminal;
- modulating the voltage of the first pulsating waveform, applying the voltage of the modulated first pulsating waveform to a primary side of a transformer, and converting the voltage of the modulated first pulsating waveform to voltages of multiple pulsating waveforms by the transformer;
- synthesizing the voltages of the multiple pulsating waveforms to output a second AC, and applying the second AC to a battery of the terminal, wherein an absolute value of a peak voltage of a positive half of each cycle of the second AC is greater than an absolute value of a valley voltage of a negative half;
- and
- sampling a voltage of the second AC to obtain a voltage sampling value and modulating the voltage of the first pulsating waveform according to the voltage sampling value, wherein the second AC meets charging requirements.
2 more elements
Dependencies are inferred from the claim text.