High-Voltage Cable Routing Structure for Electric Vehicle Battery Systems
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Solution Overview
Problem
Conventional high-voltage cable routing structures for electrically driven vehicles compromise battery capacity and space efficiency by requiring a recess for large curvature radii, leading to reduced mileage and inefficient use of space.
Innovation Solution
The high-voltage cable routing structure positions the battery and high-voltage equipment to overlap vertically, with cables routed along the vehicle width direction, allowing for a large curvature radius without wasting space, and utilizing brackets to support cables and maintain stability, ensuring efficient assembly and reduced power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a recess is made in the battery to form a recessed portion for securing large curvature radius, then the curvature radius requirement is met, but the battery capacity is reduced
Solution Approach 1:
The patent transitions from a two-dimensional planar arrangement to a three-dimensional spatial arrangement by positioning the battery and high-voltage equipment at different vertical levels. The battery is placed on the vehicle floor while the high-voltage equipment is mounted on the vehicle body above, creating vertical separation that allows cables to achieve large curvature radii without requiring horizontal recesses into the battery.
Solution Approach 2:
The patent utilizes the vertical space above the battery by nesting the high-voltage equipment mounting position within the vehicle body structure directly above the battery location. This nested arrangement allows the cable routing to pass through the vertical space between the battery and equipment, achieving the required curvature radius without compromising battery capacity.
2Reliability
If the high-voltage cables are routed with large curvature radius to reduce heat generation, then electrical performance is improved, but space efficiency is reduced
Solution Approach 1:
The patent resolves the space efficiency conflict by utilizing the vertical dimension of the vehicle body. Instead of requiring large horizontal areas for cable bending, the cables route vertically from the battery on the floor to the high-voltage equipment mounted above, achieving large curvature radii in the vertical direction while maintaining compact horizontal footprint.
3Area of stationary object
If the battery and high-voltage equipment are positioned to overlap vertically, then space efficiency is improved, but cable routing complexity increases
Solution Approach 1:
The vertical overlapping arrangement simplifies cable routing by providing a direct vertical path from the battery connection terminals on the floor to the high-voltage equipment connection terminals on the vehicle body. This vertical alignment eliminates the need for complex horizontal cable management and makes the routing path straightforward and accessible.
Data Source
AI summary
The present invention is a high-voltage cable routing structure for an electrically driven vehicle, comprising a battery supported on a vehicle body, a high-voltage equipment including an inverter, and multiple high-voltage cables connecting connection terminals of the battery and connection terminals of the equipment to each other. The battery, equipment, and cables are mounted on the vehicle. Regarding the structure, in a mounting space in the body, the battery and the equipment are disposed at such positions as to overlap each other vertically. The terminals of the equipment positioned at the top are provided on an upper portion thereof. The cables connected to the battery and the equipment are arranged to lead out in a direction along a vehicle width direction and to curve in such a way that middle portions thereof are located away from a lateral wall surface of the equipment in a front and rear direction.