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Charger with built-in leakage protection circuit and its leakage protection method

A leakage protection and charger technology, applied in emergency protection circuit devices, battery circuit devices, collectors, etc., can solve problems such as human injury and achieve the effect of avoiding injury

Active Publication Date: 2019-02-19
SHENZHEN TOPWISE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the charger leaks electricity during use, it cannot automatically cut off the power, and the leakage will directly cause harm to the human body

Method used

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  • Charger with built-in leakage protection circuit and its leakage protection method
  • Charger with built-in leakage protection circuit and its leakage protection method

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Embodiment Construction

[0032] In order to express the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings.

[0033] see Figure 1-2 , the charger with built-in leakage protection circuit of the present invention comprises a charger body 1 and a relay mechanism circuit 30 installed in the charger body 1, a relay mechanism test circuit 31, a leakage detection circuit 32, a step-down circuit 33 and an output Control circuit 34, power supply 1 is connected with the input end of leakage detection circuit 32 by overload protection circuit 35, and relay mechanism circuit 30 and relay mechanism test circuit 31 are all connected with the input end of leakage detection circuit 32; A filtering circuit 36 ​​is connected to the input end of the rectifying circuit 37, and the output end of the rectifying circuit 37 is divided into two routes, one output of the rectifying circuit 37 is connected to the step-down circuit 33 through the ...

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PUM

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Abstract

The invention discloses a charger with a built-in electric leakage protection circuit and an electric leakage protection method thereof. The protection circuit comprises a charger body, a relay mechanism circuit, a relay mechanism test circuit, an electric leakage detection circuit, a voltage reduction circuit and an output control circuit, wherein the relay mechanism circuit, the relay mechanism test circuit, the electric leakage detection circuit, the voltage reduction circuit and the output control circuit are installed in the charger body. A power supply is connected to an input terminal of the electric leakage detection circuit through an overload protection circuit. The relay mechanism circuit and the relay mechanism test circuit are connected to the input terminal of the electric leakage detection circuit. The electric leakage detection circuit is connected to an input terminal of a rectification circuit through a first filter circuit. An output terminal of the rectification circuit is divided into two paths. One path of the output of the rectification circuit is connected to the voltage reduction circuit through a second filter circuit. Another path of the output of the rectification circuit is connected to the voltage reduction circuit through a PWM circuit. The voltage reduction circuit is connected to an input terminal of the output control circuit. An output terminal of the output control circuit outputs to electric equipment. When there is an electric leakage phenomenon, the charger can be powered off automatically so that damages to people caused by electric leakage are avoided.

Description

technical field [0001] The invention relates to the technical field of chargers, in particular to a charger with a built-in leakage protection circuit and a leakage protection method thereof. Background technique [0002] The chargers currently on the market are all ordinary chargers, which convert AC to DC. With the rapid development of mobile phones, metal shell mobile phones currently used in the market are becoming more and more popular, and there may be a risk of leakage when using ordinary chargers. If a leakage occurs during the use of the charger, the power cannot be automatically cut off, and the leakage will directly cause harm to the human body. Contents of the invention [0003] In view of the deficiencies in the above-mentioned technologies, the present invention provides a charger with a built-in leakage protection circuit and a leakage protection method thereof, which can automatically cut off the power in case of leakage in the charger, thereby avoiding da...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/02H02H3/32
CPCH02H3/32H02J7/027
Inventor 黄梽恒
Owner SHENZHEN TOPWISE COMM CO LTD
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