The high-voltage wiring harness is the medium of high-voltage power transmission by connecting various components on the high-voltage system. The high-voltage wiring harness has high-voltage electricity, which has a great impact on the safety of the high-voltage system of the whole vehicle. This article expounds the precautions for its layout from the two aspects of high-voltage wiring harness reserved clearance and fixation.
1. High-voltage wiring harness layout reserved clearance requirements
The layout of the high-voltage wiring harness needs to provide operating space for assembly and repair, and a certain gap needs to be reserved for the layout.
In order to facilitate the connection and disconnection operations, it is generally required to reserve at least 200mm of space at the connector position, and the connection between the connector and the components should be properly relieved of mechanical stress.
Considering different models, the layout clearance of high-voltage wiring harnesses is also different. Generally speaking, the distance between high-voltage and low-voltage parallel wiring for commercial vehicles needs to be greater than 400mm, while the distance between high-voltage and low-voltage parallel wiring for passenger cars must be greater than 200mm; if in practical applications If this distance cannot be met, you can also consider routing lines perpendicular to each other.
2. High voltage wiring harness fixing requirements
The principle of high-voltage wiring harness layout is to protect the wiring harness as much as possible and minimize the relative movement between the wiring harness and the vehicle body.
Depending on the length of the high-voltage wire harness, the general fixing methods are also different. Usually, smooth and burr-free brackets, wire grooves, wire clips, cable ties, etc. are used for fixing; when using cable ties for fixing, the fixing method should be fully considered to facilitate selection. Appropriate cable ties should be used for fixing to avoid the risk of fixing failure.
There are also distance requirements for the fixed protection parts of the wiring harness, generally not greater than 400mm, and the high-voltage wiring harness must not interfere with the moving parts, and the distance between the two should not be less than 50mm.
The pure electric vehicle power battery is arranged in the lower bottom plate at the rear of the vehicle. The high-voltage wiring harness drawn from the front end of the battery passes under the vehicle bottom plate and is close to the ground. It is necessary to add bellows protection outside the cable to avoid the high-voltage wiring harness being exposed to the road during driving. Risk of splashing stones, etc.
In some locations due to space requirements, if the wiring harness cannot be protected by a corrugated tube, you can consider adding a plastic wire groove outside the high-voltage wiring harness to protect the wiring harness.
For more ev high-voltage cable and ev charging cables,please visit the official website of OMG: https://www.omgevcable.com
