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Overvoltage protection device, method and system

An overvoltage protection device, overvoltage protection technology, applied in circuit devices, battery circuit devices, safety/protection circuits, etc., can solve the problem of high charging voltage

Active Publication Date: 2021-11-30
SHENZHEN WATER WORLD INFORMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an overvoltage protection device, method and system, which is used to solve the problem that the charging voltage is too high due to oscillation when the overvoltage protection chip starts the connection between the charger and the back-end electronic components

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  • Overvoltage protection device, method and system
  • Overvoltage protection device, method and system
  • Overvoltage protection device, method and system

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Embodiment Construction

[0050] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0051]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0052] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). If the specific ...

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Abstract

The present invention proposes an overvoltage protection device, method and system, wherein the overvoltage protection device includes a CPU, a charging port, an overvoltage protection chip and a charging management chip, the charging port and the charging management chip are connected through an overvoltage protection chip circuit, and the CPU It is connected with the charging management chip circuit. When charging the device terminal, it first outputs a small initial value by controlling the charging current, and then gradually increases to the normal value of the charging current according to a certain increase rate, which solves the problem caused by instantaneous charging. The current is too large, resulting in oscillation, which makes the charging voltage too high and cannot be charged normally.

Description

technical field [0001] The invention relates to the field of overvoltage protection of electronic equipment, in particular to an overvoltage protection device, method and system. Background technique [0002] Overvoltage protection is mainly to prevent damage to electronic components caused by overvoltage or electrostatic discharge. It is widely used in various electronic system products, especially in electronic communication equipment. The basic principle is: according to the different parts of the overvoltage in the circuit , adding different overvoltage protection chips, when reaching a certain voltage threshold, the overvoltage protection chip will automatically cut off the connection, so that the energy of the overvoltage will not be loaded on the electronic devices at the back end of the overvoltage protection chip, protecting the back end The electronic devices at the terminal will not be damaged by the energy of overvoltage. [0003] In electronic communication equ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0029
Inventor 张立新周毕兴
Owner SHENZHEN WATER WORLD INFORMATION CO LTD