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Automotive switchboard protection circuit

A technology for protecting circuits and switchboards, applied in the automotive field, can solve problems such as unguaranteed faults and slow fusing speed, and achieve the effects of avoiding sparks, improving safety, and preventing combustion

Inactive Publication Date: 2017-07-21
天津博泰圣华科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Car wiring harnesses and electrical appliances work in harsh environments, and there is no guarantee that there will be no failures, especially as the vehicle ages more seriously
The existing automobile switchboard is protected by a fuse, the fusing speed is slow, and the generation of sparks cannot be avoided

Method used

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  • Automotive switchboard protection circuit
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Embodiment Construction

[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate 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 intended to explain the present invention and should not be construed as limiting the present invention.

[0016] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand...

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PUM

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Abstract

The invention proposes an automotive switchboard protection circuit comprising a power supply, a pre filtering module, a post filtering module, a current protection module, and a load device. The power supply, the pre filtering module, the current protection module, the post filtering module, and the load device are connected in series. The current protection module consists of a current detection chip, a first triode, a second triode, a third triode, a fourth triode, a fifth triode, a field-effect tube, a pull-up resistor, a first resistor, a second transistor, a third resistor, a fourth resistor, a first voltage divider resistor, a second voltage divider resistor, a voltage-regulator tube, a diode, a reset button, and an LED light. The protection circuit has sensitive reaction; the power cutting speed is fast; spark generation can be avoided; and automobile security is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an automobile switchboard protection circuit. Background technique [0002] According to statistical data, 80% of the occurrence of spontaneous combustion of existing automobiles is caused by sparks generated by electrical short-circuit grounding. Automotive wiring harnesses and electrical appliances work in harsh environments, and there is no guarantee that there will be no failures, especially as the vehicle ages. The existing automotive switchboard is protected by a fuse, and the fusing speed is slow, so the generation of sparks cannot be avoided. Contents of the invention [0003] The aim of the present invention is to solve at least one of said technical drawbacks. [0004] For this reason, the object of the present invention is to propose a kind of protection circuit of automobile switchboard, and this protection circuit responds sensitively, cuts off the power fast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/08
CPCH02H3/08
Inventor 李铁生闫博通邱晓宁
Owner 天津博泰圣华科技发展有限公司