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Safety circuit for test type electric vehicle

A safety circuit and electric vehicle technology, applied in the automotive field, can solve the problems of cutting off the power supply, etc., and achieve the effect of improving safety, strong safety and reliability, and simple layout

Active Publication Date: 2017-09-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of how to quickly cut off the power supply when the experimental electric vehicle breaks down. The present invention provides a safety circuit for the experimental electric vehicle

Method used

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  • Safety circuit for test type electric vehicle

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Embodiment Construction

[0021] The purpose of the invention will be described in further detail below in conjunction with the drawings and specific embodiments. The embodiments cannot be repeated here, but the implementation of the invention is not limited to the following embodiments.

[0022] As attached figure 1 As shown, a safety circuit for an experimental electric vehicle includes a power battery 1, a drive motor 10, and a motor controller 11 connected to the circuit, and also includes: a control system main switch 2, a battery management system 3, and a drive system main switch 4. Braking reliability device 5, brake over-travel switch 6, inertia switch 7, emergency stop switch 8, high-voltage emergency disconnect device 9, low-voltage power supply 16, insulation monitoring device 17, the high-voltage emergency disconnect device 9 The high-voltage terminal of the power battery 1 is connected in series to the circuit between the battery positive electrode 15 of the power battery 1 and the motor con...

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Abstract

The invention discloses a safety circuit for a test type electric vehicle. The safety circuit comprises a power battery, a driving motor, a motor controller, a control system master switch, a battery management system, a drive system master switch, a braking reliability device, a braking over-travel switch, an inertia switch, an emergency stop switch, a high-voltage emergency cut-off device, a low-voltage power supply and an insulated monitoring device, wherein a positive insulated relay and a negative insulated relay are arranged in the power battery; the positive pole of the low-voltage power supply is sequentially connected with the control system master switch, the low-voltage end of the high-voltage emergency cut-off device, the drive system master switch, the braking reliability device, the braking over-travel switch, the inertia switch, the emergency stop switch and the insulated monitoring device in series and then is respectively connected with the positive insulated relay and the negative insulated relay. According to the safety circuit disclosed by the invention, output of the power battery can be cut off when any related abnormal condition occurs, the motor is driven to have emergency stop, and the aim of protecting the safety of drivers, passengers and pedestrians is achieved.

Description

Technical field [0001] The present invention relates to the field of automobiles, and in particular to a safety circuit for experimental electric vehicles. Background technique [0002] With the increase of people’s awareness of environmental protection, the use of electric vehicles is increasing, and the development of electric vehicles is also increasing. At present, many electric passenger vehicles have entered the market, and high-voltage power supplies are the main energy source for electric vehicles. Source, high-voltage safety is an inevitable problem of electric vehicles, and as a special electric vehicle, the safety and reliability of experimental electric vehicles are smaller than electric passenger vehicles, so how to improve the safety and reliability of experimental electric vehicles To protect the safety of drivers, passengers and pedestrians has become an urgent problem for experimental electric vehicles. Summary of the invention [0003] The purpose of the present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00
CPCB60L3/00Y02T10/70
Inventor 蔡锦权李巍华王桂南周佳楸范兆权
Owner SOUTH CHINA UNIV OF TECH
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