EV Power Source Connector Placement Between Relay Box and Cabin
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Solution Overview
Problem
In electric vehicles, the connector connecting the electric-power control device and the battery is at risk of damage during collisions due to its potential interference with vehicle members, particularly in frontal, side, or rear collisions.
Innovation Solution
The electric-power control device, connector, and relay box are strategically positioned in a power source compartment located on one side of the driver's seat compartment in the longitudinal direction, with the connector placed adjacent to the relay box and between it and the driver's seat compartment, reducing the likelihood of interference during collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the connector is disposed in the power source compartment housing the drive apparatus, then the connector can be integrated with the electric-power control device and battery, but the connector is at risk of damage during collision due to potential interference with vehicle members
Solution Approach 1:
The connector is positioned in a specific location within the power source compartment - adjacent to the relay box and between the relay box and driver's seat compartment in the longitudinal direction. This localized positioning strategy places the connector in a protected zone that is less susceptible to collision damage while maintaining integration with the electrical system components.
2Reliability
If the connector is positioned away from the driver's seat compartment to avoid collision damage, then connector protection is improved, but the wiring complexity and space utilization may increase
Solution Approach 1:
The connector is merged with the relay box assembly, forming an integrated unit within the power source compartment. This combination allows the connector to be positioned in a protected location while sharing space with other electrical components, thereby avoiding increased wiring complexity and optimizing space utilization in the vehicle's electrical system.
Data Source
AI summary
An electric vehicle includes: an electric motor; a power transmission device; a driving battery to be connected to an external charger; an electric-power control device for controlling an electric power transferred between the battery and the electric motor; a connector connecting between the electric-power control device and an electrical wire connected to the battery; a relay box for switching power supply paths to the battery; and a power source compartment which houses a drive apparatus including the electric motor and the power transmission device and which is provided on a front or rear side of a driver's seat compartment in a longitudinal direction of the electric vehicle. The electric-power control device, connector and relay box are disposed in the power source compartment. The connector is located adjacent to the relay box and is located between the relay box and the driver's seat compartment in the longitudinal direction.