A connection structure and control method of a pure electric vehicle high-voltage electrical interlock circuit

Abstract

The invention provides a connection structure of a pure electric vehicle high-voltage electrical interlock circuit, including a vehicle controller, an MSD maintenance switch, a motor controller positive plug-in, a motor controller negative plug-in, a battery pack positive plug-in, a battery pack negative plug-in, a conversion Connector plug-in, charger plug-in, air conditioner plug-in, high-voltage steering plug-in, electric heater plug-in, converter equipment, charger equipment and air-conditioning equipment; forming a main interlock circuit and an auxiliary interlock circuit. The present invention also provides a control method for the interlocking circuit of high-voltage electrical appliances in pure electric vehicles. The present invention can monitor the connection reliability of high-voltage wire harnesses under the premise that the I / O detection interface of the vehicle controller is limited, and improves the reliability of pure electric vehicles. Safety of use.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a connection structure and a control method of a high-voltage electrical interlock circuit of a pure electric vehicle. Background technique [0002] A pure electric vehicle refers to a vehicle powered by an on-board power supply, driven by a motor to drive the wheels, and meets the requirements of road traffic and safety regulations. It involves many high-voltage and high-current components, and its safety is the most important thing people pay attention to. At present, many pure electric vehicles do not have the high-voltage interlock protection function. When high-voltage connectors are disconnected or in poor contact, it is easy to cause high-voltage line leakage or cause the entire vehicle to be charged with high-voltage electricity. On the other hand, there will be a danger of personnel operating with electricity. Therefore, the high-voltage wiring harness and plug-in c...

AI Technical Summary

Problems solved by technology

[0003] The plug-ins and parts of the existing pure electric vehicles are connected between the high-voltage electrical box and the vehicle controller, resulting in a large number of low-voltage wiring harnesses, and the I / O detection interface that the vehicle controller can provide is limited, so it cannot Detect all plug-ins and components; in addition, when the high-voltage harness is poorly connected, it cannot be monitored in time to disconnect the high voltage of the battery for protection

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