Reverse charging device, and method and device for regulating reverse charging current
AssigneeBeijing Xiaomi Mobile Software Co., Ltd.
InventorsFei JIANG, Ping QIAN, Xin XIONG
Life of this patent
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Abstract
A reverse charging device includes a processor, a standard downstream port (SDP) and a first link on which a charging downstream port (CDP) interface chip is arranged. When it is detected that an adapter is plugged into the SDP, the processor is connected with the SDP through the first link, and the processor, the CDP interface chip, and the SDP form a CDP to perform reverse charging through the CDP and the adapter, wherein the CDP has a current transmission capability higher than the SDP.
Claims16
A reverse charging device, comprising:
- a processor;
- a standard downstream port (SDP);
- and
- a first link on which a charging downstream port (CDP) interface chip is arranged,
- wherein when it is detected that an adapter is plugged into the SDP, the processor is connected with the SDP through the first link, and the processor, the CDP interface chip, and the SDP form a CDP to perform reverse charging through the CDP and the adapter, the CDP having a current transmission capability higher than the SDP.
A method for regulating a reverse charging current, applied to a first terminal device, the method comprising:
- acquiring a total current value in a process of reversely charging a second terminal device through an adapter, the total current value including a reverse charging current value and a value of current consumed by one or more application programs running on the first terminal device;
- comparing the total current value with a rated current value of a battery;
- and
- when the total current value is kept higher than the rated current value for a preset time period, decreasing the reverse charging current value.
A first terminal device, comprising:
- a processor;
- and
- a memory configured to store an instruction executable by the processor,
- wherein the processor is configured to:
- acquire a total current value in a process of reversely charging a second terminal device through an adapter, the total current value including a reverse charging current value and a value of current consumed by one or more application programs running on the first terminal device;
- compare the total current value with a rated current value of a battery;
- and
- when the total current value is kept higher than the rated current value in a preset time period, decrease the reverse charging current value.
Dependencies are inferred from the claim text.