EV Connecting Member Layout Above Battery Expansion Zone
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Solution Overview
Problem
In frame-based electric motor vehicles, the expansion and deformation of batteries due to thermal diffusion can cause interference and damage to connecting members, such as cooling conduit lines and power cables, leading to potential damage and inefficiencies in the vehicle's electrical and cooling systems.
Innovation Solution
The configuration includes a connecting member, such as a cooling conduit line or power cable, that is upwardly spaced from the battery and secured above cross brackets, which are disposed between the vehicle's side rails, preventing interference and damage during thermal expansion and collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the connecting member is disposed close to the battery to reduce route length, then the connecting member is more susceptible to interference and damage from battery thermal expansion
Solution Approach 1:
The connecting member is routed through the vertical dimension by passing through the hollow interior of the shock absorber, which extends downward from the body assembly. This three-dimensional routing approach allows the connecting member to achieve a shorter overall route length while maintaining sufficient clearance from the battery, thereby resolving the contradiction between route length and reliability.
2Reliability
If the connecting member is disposed far from the battery to prevent interference, then the route length and system complexity increase
Solution Approach 1:
The shock absorber serves multiple functions: it provides suspension functionality, acts as a protective housing for the connecting member, and serves as a structural component of the body assembly. By utilizing the existing shock absorber structure to route and protect the connecting member, the invention avoids adding separate protective structures, thereby maintaining system simplicity while ensuring reliability.
3Reliability
If the connecting member passes through the shock absorber, then protection from battery deformation is achieved, but the shock absorber structure becomes more complex
Solution Approach 1:
The connecting member is nested within the hollow interior of the shock absorber, utilizing the existing structural space. This nesting approach allows the connecting member to be protected by the shock absorber's cylindrical housing without requiring additional external protective structures, thereby maintaining the simplicity of the overall system while achieving reliable protection from battery thermal deformation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively prevents interference and damage to the connecting members by maintaining a safe distance from the deformed battery, ensuring the integrity of the electrical and cooling systems, and reducing the risk of thermal damage.
Implementation Method 1
the battery may expand and deform due to thermal diffusion
Data Source
AI summary
An electric motor vehicle includes left and right side rails extending along a length of the vehicle, a battery disposed between the left and right side rails, an electric motor unit disposed in a further rearward part in the vehicle with respect to the battery, an auxiliary machine unit disposed in a further forward part in the vehicle with respect to the battery, and a connecting member connecting the auxiliary machine unit and the electric motor unit along the length of the vehicle. The connecting member is upwardly spaced from the battery.