Electric Vehicle Battery Terminal Positioning
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Solution Overview
Problem
Conventional electric vehicles face challenges in protecting battery connection terminals from external disturbances in the vehicle width direction, which can affect the integrity and functionality of the battery wiring system.
Innovation Solution
The electric vehicle design includes a configuration where battery connection terminals are positioned inward within the vehicle width direction, with battery wirings and a distribution box strategically placed to optimize wiring and protect high-voltage connections, and the control unit is positioned to concentrate electrical wirings within the vehicle width direction, making it difficult for external disturbances to impact the electrical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If connection terminals are provided at one end portion of each battery in the lateral center of the vehicle body, then wiring layout is simplified, but external disturbances from outside in the vehicle width direction can affect the connection terminals
Solution Approach 1:
The connection terminals are repositioned from the lateral center position to the inner side in the vehicle width direction. This spatial reconfiguration moves the terminals from a vulnerable lateral position to a protected interior position, changing the dimensional arrangement to eliminate exposure to external disturbances while maintaining wiring efficiency.
Solution Approach 2:
The battery holding portions serve as intermediary protective structures that physically shield the connection terminals. By positioning terminals on the inner side of the holding portions, the holding portions act as a barrier between external disturbances and the vulnerable terminal connections.
2Ease of operation
If battery wirings extend outward from battery-holding portions, then connection to batteries is direct, but high-voltage wirings are exposed to external disturbances
Solution Approach 1:
The battery holding portions function as intermediary protective elements that shield the battery wirings. The wirings are positioned to extend from the inner side of the holding portions, using the holding portion structure as a protective barrier against external disturbances while maintaining efficient electrical connection to the batteries.
Solution Approach 2:
The wiring routing is reconfigured to traverse through the interior space defined by the battery holding portions rather than extending outward. This dimensional repositioning places the high-voltage wirings within a protected zone, eliminating exposure to external disturbances while preserving connection efficiency.
3Adaptability or versatility
If electrical wirings are distributed across a wide area, then wiring flexibility is increased, but vulnerability to external disturbances increases
Solution Approach 1:
The electrical wirings are consolidated and routed through a common protected pathway defined by the battery holding portions and control unit arrangement. This merging of wiring routes concentrates the electrical pathways within a protected zone, reducing overall vulnerability to external disturbances while maintaining necessary wiring flexibility for system adaptability.
Data Source
AI summary
An electric vehicle includes: a pair of left and right batteries (26a); a pair of left and right battery-holding portions (28d) which respectively hold the left and right batteries (26a); and a pair of left and right battery connection terminals (28c1) which are provided on inner sides of the left and right battery-holding portions (28d) in a vehicle width direction and connected respectively to the left and right batteries (26a).