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Charging interface protection method and charging device

A charging interface and voltage technology, applied in battery circuit devices, circuit devices, safety/protection circuits, etc., can solve problems such as micro-short circuit, water ingress, and mobile terminals can no longer be used.

Pending Publication Date: 2020-03-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether it is a USB interface or a TPYE C interface, there are signal pins arranged around the charging pin (VBUS / VCHGpin). Water phenomenon is likely to cause a micro-short circuit or a short circuit between the VBUS / VCHG pin and the adjacent signal pin
In addition, when the user plugs in the data cable, it may also cause a short circuit between the VBUS / VCHG pin and the adjacent signal pin, causing some functions to fail, and even the mobile terminal can no longer be used, causing dissatisfaction or complaints from the mobile terminal user. It is more obvious in the TPYE C interface, because the TPYE C interface has more pins, and the distance between pins is smaller. Compared with the conventional USB interface, the above situation is more likely to occur.

Method used

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  • Charging interface protection method and charging device
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  • Charging interface protection method and charging device

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Embodiment Construction

[0021] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0022] In order to facilitate understanding of the technical solutions of the embodiments of the present application, the related technologies involved in the embodiments of the present application are described below.

[0023] 1) USB interface

[0024] The order of the pins of the USB interface is VBUS / VCHG, D- / DM, D+ / DP, ID, GND.

[0025] 2) Simple TPYE C interface (support USB2.0)

[0026] The order of the pins of the simple TPYE C interface is GND, VBUS / VCHG, CC2, NC, D+...

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Abstract

The invention discloses a charging interface protection method and a charging device. The method comprises the steps of comparing a voltage of a first pin of a charging interface with a reference voltage, and obtaining a first control signal based on a comparison result; and controlling whether a second pin of the charging interface is connected with the ground based on the first control signal.

Description

technical field [0001] The present application relates to circuit protection technology, in particular to a method for protecting a charging interface and a charging device. Background technique [0002] At present, most mobile terminals use a Universal Serial Bus (USB, Universal Serial Bus) interface or a TPYE C interface, and a few use non-standard interfaces. Whether it is a USB interface or a TPYE C interface, there are signal pins arranged around the charging pin (VBUS / VCHGpin). Water phenomenon is likely to cause a micro-short circuit or a short circuit between the VBUS / VCHG pin and the adjacent signal pin. In addition, when the user plugs in the data cable, it may also cause a short circuit between the VBUS / VCHG pin and the adjacent signal pin, causing some functions to fail, and even the mobile terminal can no longer be used, causing dissatisfaction or complaints from the mobile terminal user. It is more obvious in the TPYE C interface, because the TPYE C interface...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0029H02J7/00
Inventor 曾海军
Owner ZTE CORP
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