High-pressure safety electric interlocking mechanism of electro-mobile, control method and electro-mobile

Abstract

The invention provides a high-pressure safety electric interlocking mechanism of an electro-mobile, a control method and an electro-mobile. The mechanism comprises a complete vehicle controller, a first low voltage relay, a collision switch, a high voltage relay, a high voltage connector with an interlocking structure and a power battery system controller, wherein the complete vehicle controller is respectively connected with the control end of the first low voltage relay and a power battery system controller; the first low voltage relay, a load, the high voltage connector and the power battery system controller are sequentially connected to form a high voltage safety electric interlocking loop; the complete vehicle controller controls the first low voltage relay to switch on / off a drive voltage source and detect the on and off states of the high voltage safety electric interlocking loop, and the on and off of a high voltage relay is controlled by the power battery system controller. According to the high-pressure safety electric interlocking mechanism provided by the invention, the monitoring and control of the high voltage safety electric interlocking loop can be realized by the complete vehicle controller, the out of control phenomenon of endangering personnel and vehicles can be prevented, the control performance of a complete vehicle can be improved, and the reliability of the operation of the complete vehicle can be promoted.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to an electric vehicle high-voltage safety electrical interlock mechanism and control method, and the electric vehicle. Background technique [0002] Generally, power batteries for energy-saving and new energy vehicles have a high voltage, and the voltage is basically greater than or equal to 300V. According to the national standard "GBT 19751-2005 Safety Requirements for Hybrid Electric Vehicles", the maximum voltage is higher than or equal to 60V (DC) or 25V (AC) (human Safety voltage) is a high voltage, which is far higher than the safe voltage that the human body can bear. All high-voltage components of energy-saving and new energy vehicles are usually connected to each other through high-voltage connectors. From the perspective of personal high-voltage safety protection, it is necessary to make a safety design for the connection circuit of all high-voltage components of energy-...

AI Technical Summary

Problems solved by technology

[0005] First of all, the quality of the interlock mechanism of the high-voltage connector is not well controlled; secondly, as time goes by, the contact between the interlock mechanisms is unreliable, and the voltage drop between the interlock mechanisms increases, resulting in internal battery system failure. The driving voltage of the high-voltage relay is insufficient, and the high-voltage relay cannot be closed or suddenly disconnected; finally, the design of the scheme is unreasonable. Due to the failure of the high-voltage interlock mechanism, the vehicle is out of control-sudden loss of power source, endangering the safety of passengers and vehicles. occur

[0006] To sum up, the existing high-voltage safety electrical interlock mechanism scheme has poor vehicle control performance and low vehicle operation reliability.

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