Charging circuit, charging device and electronic equipment
By designing a charging circuit for the USB interface, using the control unit and controlled switching circuit to detect and control the access method of external power supply, the corrosion and burning problem of the USB interface during high-voltage charging is solved, and a safer and more efficient charging is achieved.
CN222638203UActive Publication Date: 2025-03-18BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Patent Information
- Application Number
- CN202421062069.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-15
AI Technical Summary
Technical Problem
The USB interface is prone to corrosion and burning during high voltage charging, mainly due to the dense and large number of pins in the interface.
Method used
Design a charging circuit, including the input positive and input negative terminals, a controlled switching circuit and a control unit. The control unit detects the forward or reverse connection of the external power supply, and controls the switch circuit to switch on to realize power supply to electronic devices.
Benefits of technology
Effectively reduce the number of pins connected to external power supplies, avoid corrosion and burns caused by dense pins during high voltage charging, and reduces manufacturing costs.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to a charging circuit, a charging device and electronic equipment, and the charging circuit comprises an input positive electrode end and an input negative electrode end which are used for connecting an external power supply; the input end of the controlled switch circuit is connected with the input positive electrode end and the input negative electrode end, and the output end of the controlled switch circuit is used for supplying power to the electronic equipment; the control unit is provided with a first detection end, a second detection end and a control end, the first detection end is connected with the input positive electrode end, the second detection end is connected with the input negative electrode end, and the control end is connected with the controlled switch circuit to control the controlled switch circuit to be switched and conducted. The first communication end is used for communication between the electronic device and the outside. The control unit is used for detecting whether the external power supply connected with the input positive electrode end and the input negative electrode end is in positive connection or reverse connection, so that the number of pins used for being connected with the external power supply is effectively reduced, and corrosion and burning loss caused by dense and more pins during high-voltage charging are further avoided.
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