Charging circuit, terminal device, charging interface and charging device

Abstract

The embodiment of the invention provides a charging circuit, a terminal device, a charging interface and a charging device, wherein the charging circuit comprises a device end interface, N signal transmission connecting lines, N switches and a detection module, a signal detection pin and N signal transmission pins are arranged on the device end interface, the N signal transmission pins are distributed in a normal N polygon, and N is an integer greater than or equal to 3: the first ends of the N switches are respectively connected with the N signal transmission pins; a detection end of the detection module is connected with a signal detection pin, a control end of the detection module is respectively connected with the control ends of the N switches for detecting a target voltage value of the signal detection pin and controlling the N switches according to the target voltage value, so that the N signal transmission pins are respectively connected with the N signal transmission connecting lines, and the target signal transmission connecting line is connected with the target signal transmission pin among the N signal transmission pins. By adoption of the charging circuit provided by the embodiment of the invention, the operation convenience of the terminal device can be improved.

Description

technical field [0001] The invention relates to the technical field of charging interfaces, in particular to a charging circuit, a terminal device, a charging interface and charging equipment. Background technique [0002] The technology of charging devices through chargers is becoming more and more widely used in computers, smart plus points and other devices. [0003] At present, in the process of connecting the charging interface and the terminal equipment interface, the direction of the charging interface and the terminal equipment interface must be matched to avoid damage to the equipment or disconnection caused by the reverse connection of the two. For example, the power supply of the charging terminal (Voltage Bus , VBUS) contacts are connected to the ground (Ground, GND) contacts of the terminal, which will cause a short circuit to the ground of the power supply, thus burning out the device. [0004] Such as figure 1 As shown, in the related art, after connecting t...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a charging circuit, a terminal device, a charging interface and a charging device, so as to solve the problem of inconvenient operation of the terminal device existing in chargers in related technologies

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