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High-voltage safety protection device of pure electric vehicle

A pure electric vehicle, high-voltage safety technology, applied in the direction of electric vehicles, electrical devices, vehicle components, etc., can solve the problems of power battery damage, leakage and other safety problems, and achieve the effect of preventing safety problems

Pending Publication Date: 2018-10-09
JINGCHU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Pure electric vehicles have been vigorously promoted and used as new energy vehicles. The terminal voltage of the power battery pack of pure electric vehicles is 280V-700V, which is far beyond the safe voltage that the human body can bear. raise security concerns

Method used

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  • High-voltage safety protection device of pure electric vehicle
  • High-voltage safety protection device of pure electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: A DC bus insulation resistance detection sensor 10 is provided on the high-voltage DC positive and negative electrodes between the output terminal of the power battery box 1 and the input terminal of the inverter circuit 2, and the DC bus insulation resistance The detection sensor 10 is also connected to the analog-to-digital conversion circuit 6 .

Embodiment 2

[0025] Embodiment 2: An AC bus insulation resistance detection sensor 11 is provided on at least one of the three-phase high-voltage AC buses between the output end of the inverter circuit 2 and the input end of the drive motor 3, and The AC bus insulation resistance detection sensor 11 is also connected to the analog-to-digital conversion circuit 6 .

Embodiment 3

[0026] Embodiment 3: The present invention also includes a rotational speed sensor 12 coaxially installed on the output shaft of the drive motor 3 , and the rotational speed sensor 12 is also connected to the analog-to-digital conversion circuit 6 .

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PUM

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Abstract

The invention relates to a high-voltage safety protection device of a pure electric vehicle. A power battery box of the pure electric vehicle provides driving power for a driving motor of the pure electric vehicle through an inverter circuit; the high-voltage safety protection device further comprises a turn off / on thyristor, an acceleration sensor, an analog-to-digital conversion circuit, an operational circuit and a trigger circuit; the cathode and the anode of the turn off / on thyristor are serially connected with a power storage battery unit in the power battery box, the acceleration sensoris installed on the power battery box and is connected onto the input end of the operational circuit through the analog-to-digital conversion circuit, and the output end of the operational circuit isconnected with the control electrode of the turn off / on thyristor through the trigger circuit. By the aid of the quick turn off / on characteristics of the turn off / on thyristor, the power storage battery unit can be disconnected rapidly in the event of strong crash of a vehicle, and the safety problem caused by leakage of electricity due to damage of a power storage battery is avoided.

Description

technical field [0001] The invention relates to the technical field of pure electric vehicle control, in particular to a high-voltage safety protection device for pure electric vehicles. Background technique [0002] Pure electric vehicles have been vigorously promoted and used as new energy vehicles. The terminal voltage of the power battery pack of pure electric vehicles is 280V-700V, which is far beyond the safe voltage that the human body can bear. raise security issues. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-voltage safety protection device for pure electric vehicles, so that when the vehicle encounters a strong impact, the power battery unit can be disconnected quickly to prevent safety problems caused by power battery damage and leakage. [0004] The technical solution of the present invention to solve the above technical problems is as follows: a pure electric vehicle high-voltage safety ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/04
CPCB60L3/04
Inventor 王军
Owner JINGCHU UNIV OF TECH
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