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High-voltage safety monitoring device for electric automobile

A technology for safety monitoring and electric vehicles, applied in the direction of measuring devices, measuring electricity, vehicle components, etc., can solve problems such as no solutions, and achieve the effect of avoiding circuit failures and electrical shocks of electrical equipment, and realizing safe connection

Inactive Publication Date: 2007-08-29
CHERY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] As a safety issue of the high-voltage system, it has not yet attracted enough attention. For example, the safety of the high-voltage system includes the safety of drivers and passengers, the safety of electrical equipment in the car, and the safety of the battery itself. Therefore, high-voltage safety monitoring devices are required to monitor the insulation status of the high-voltage system, Functions such as high-voltage grounding status, high-voltage system connection status, high-voltage circuit connection control, vehicle collision disconnection control, etc., and no specific solutions have been proposed

Method used

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  • High-voltage safety monitoring device for electric automobile
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Embodiment Construction

[0012] As shown in Figure 2, the high-voltage safety monitoring device for electric vehicles includes a battery management module 10 that provides a weak signal at one end of the high-voltage system 20, and receives the signal at the other end, and judges by comparing the amplitude of the signal Whether the high voltage system 20 has a short circuit or an open circuit fault. The high-voltage loop interlock function provided by the present invention realizes the monitoring of the electrical integrity of the system. The system generates a measurement signal and monitors the return signal after the signal passes through the high-voltage system. According to the amplitude of the return signal, the high-voltage The connection state of the system circuit, such as an open circuit or short circuit fault in the circuit, the signal amplitude will change greatly, so that it can be judged that a circuit fault has occurred in the system.

[0013] An omni-directional collision sensor 30 is ...

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Abstract

The invention relates to a monitoring device of high pressure system which is used for electric automobile electromobile or mixing drive automobile, it includes battery manage module supplies a weak signal at the end of the high pressure system, and receive the signal at the other end, through compare the crest value of the signal to judge high pressure system whether or not short circuit or broken fault, in the close process of high pressure system, through compare the relation between the voltage across of high pressure system and voltage across of battery, achieve the safely connect of the high pressure system.

Description

technical field [0001] The present invention relates to the high-voltage safety of pure electric vehicles or hybrid vehicles using high-voltage battery packs as energy sources, in particular to the safe connection of high-voltage systems of electric vehicles or hybrid vehicles, high-voltage insulation fault monitoring, high-voltage loop interlocking, etc. security monitoring. Background technique [0002] Electric vehicles or hybrid vehicles include a high-voltage system composed of a high-voltage battery pack, motor, etc. The voltage at both ends of the battery pack is usually greater than 144V. At the same time, in order to obtain higher energy efficiency, it is necessary to increase the voltage of the high-voltage system. In the case of power, reduce the current. Continuous improvement requires high-voltage systems to withstand higher voltages. Therefore, high-voltage system safety technology has become a key technology for the industrialization of pure electric vehicles...

Claims

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Application Information

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IPC IPC(8): G01R31/36G01R31/00B60R16/02
Inventor 马建新彭庆丰王野黎刚
Owner CHERY AUTOMOBILE CO LTD
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