High-voltage loop interlock structure and method of electric vehicle charging system

Abstract

The invention relates to a high voltage loop interlocking structure and method for an electric vehicle charging system in order to solve the problem that because operation safety of personnel is not taken into consideration in design of an electric vehicle system, high voltage connectorclips may be disconnected or an outer cover of parts may open, the parts still carry high voltage electricity, and danger of hot-line work is caused. The high voltage loop interlocking structure is a charging interlocking system and comprises a lithium ion battery pack system 1, a vehicle-mounted charger assembly 2, a charger high voltage input adapter wiring harness 3, an internal wiring harness charging port 4 and an external wiring harness charging port 5, high voltage cables, high voltage connector clips and four interlocked loops of wiring harness plug-ins. The connecting structure is low in design cost, has the loop interlocking fault judgment function and the function of interlocking protection of charger charging and READY start, totally meets the requirements of modern electric vehicles and is more reliable in high voltage safety protection.

Description

technical field [0001] The invention belongs to the field of electric vehicle charging systems, and in particular relates to a high-voltage loop interlocking structure and method of the electric vehicle charging system. Background technique [0002] Electric vehicles include hybrid electric vehicles and pure electric vehicles. In electric vehicles, mechanical systems such as wheels, air compressors, steering pumps, and air-conditioning compressors originally driven by internal combustion engines need to be driven by high-power motors. These high-power motors require There is a high voltage power supply to provide electricity. At present, most electric vehicles have no high-voltage interlock protection function. When the connectors fall off, it is easy to cause high-voltage line leakage. On the one hand, it will cause damage to the internal components of the vehicle, and on the other hand, it will endanger the personal safety of drivers and passengers. [0003] At present, t...

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Problems solved by technology

[0016] Aiming at the deficiencies in the literature in related technical fields and the above existing technologies, on the basis of a large number of existing literature research and long-term research and development practices in related fields, the present invention proposes "the high-voltage loop interlocking structure and method of electric vehicle charging system", which solves the current In the existing technology, the installation is more complicated, a separate control electrical device is required, and the cost is relatively high; the charging fault occurs in the whole vehicle, and there is no loop interlock fault judgment function, so it is difficult to troubleshoot the fault point; there is no interaction between charger charging and READY start. The problem of lock protection; the realization of "centralized control, saving costs; the interlock plug-in structure is simpler, the reliability is strong, fully meets the multi-functional needs of modern electric vehicle protection, and the high-voltage safety protection is more reliable; it has charger charging and READY Started interlock protection; the beneficial effect of "

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