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Charging protection circuit and charging device

A charging protection and circuit technology, applied in the field of charging protection circuits and charging devices, can solve the problems of charging current backflow, affecting the safety of battery use, etc., and achieve the effect of improving safety

Pending Publication Date: 2022-04-08
SHENZHEN HORN AUDIO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the related technology, when the charging control chip is disturbed by an external surge in the conventional battery charging scheme, there is a risk of charging current backflow, which affects the safety of the battery.

Method used

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  • Charging protection circuit and charging device
  • Charging protection circuit and charging device
  • Charging protection circuit and charging device

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Embodiment Construction

[0025] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are only for explaining the present application, and should not be construed as limiting the present application.

[0026] In the description of the present application, several means more than one, and multiple means more than two. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated tech...

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PUM

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Abstract

The invention discloses a charging protection circuit and a charging device. The charging protection circuit comprises: a battery for storing electric energy; the charging control module is connected with the battery, and the charging control module is used for outputting a charging signal to the battery; the protection module comprises a control unit and a field effect transistor, the source electrode of the field effect transistor is connected with the battery, the drain electrode of the field effect transistor is connected with the charging control module, and the grid electrode of the field effect transistor is connected with the control unit; and the control unit is used for controlling the field effect transistor to be cut off under the condition that the charging control module generates the surge voltage signal. The charging protection circuit at least has the following beneficial effects that the protection module is arranged between the charging control module and the battery, so that the risk that the charging current flows back into the battery when the charging control module is subjected to external interference is avoided, and the use safety of the battery is improved.

Description

technical field [0001] The present application relates to the technical field of power supplies, in particular to a charging protection circuit and a charging device. Background technique [0002] In the related art, when the charging control chip is disturbed by an external surge in the conventional battery charging scheme, there is a risk of charging current backflow, which affects the safety of the battery. Contents of the invention [0003] This application aims to solve at least one of the technical problems existing in the prior art. For this reason, the present application proposes a charging protection circuit, which can prevent the impact of external surge interference on the battery and improve the safety of the battery. [0004] The present application also proposes a charging device having the above-mentioned charging protection circuit. [0005] The charging protection circuit according to the embodiment of the first aspect of the present application include...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 贾军停王丽
Owner SHENZHEN HORN AUDIO