EV Chassis Platform Joint Structure for Durable Frame Coupling
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Solution Overview
Problem
Conventional chassis frames for electric vehicles experience reduced coupling forces and durability at assembled portions due to repeated forces, necessitating an enhancement in assembly strength and durability between extruded and cast materials.
Innovation Solution
A chassis platform module with adhesive and fastening structures, including connection protrusions, reinforcement ribs, and fastening members, is used to increase coupling forces and durability by reinforcing connection portions between frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional connection structures between extruded and cast materials are used, then the chassis frame can be assembled, but the coupling forces are reduced when forces are repeatedly applied
Solution Approach 1:
The connection structure combines multiple materials and bonding methods: adhesive material bonded to both the extruded material and cast material, along with fastening members that secure both components. This composite approach creates a multi-layered connection system where each material contributes its strengths, preventing loosening under repeated forces and maintaining both initial coupling force and long-term durability.
2Strength
If simple assembly structures are used, then manufacturing is easier, but assembly strength between extruded and cast materials is insufficient
Solution Approach 1:
The connection structure merges multiple bonding mechanisms into a single integrated system: adhesive bonding between the extruded material and cast material, fastening members securing both components, and reinforcement members providing additional structural support. This combined approach achieves high assembly strength while maintaining manufacturing feasibility through standardized components and processes.
3Reliability
If conventional connection structures are used, then the chassis frame can be assembled, but the connection portions are damaged by repeatedly transferred forces
Solution Approach 1:
The connection structure incorporates reinforcement members and fastening members that are installed beforehand to prevent damage from repeatedly transferred forces. These components act as preventive measures, distributing and absorbing the impact of repeated forces before they can damage the connection portions, thereby maintaining durability under cyclic loading conditions.
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
The module enhances the structural stiffness and durability of the chassis frame by maintaining the position of adhesive parts and reinforcing connections, preventing damage from repeated forces.
Implementation Method 1
an adhesive part applied onto the an circumferential surface of each of the connection protrusions, and adhered to the inner circumferential surfaces of the first and second connection grooves
Data Source
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AI summary
A chassis platform module for an electric vehicle may include: a main frame having a battery mounted thereon; and a front wheel-side support frame unit connected to a front of the main frame. The front wheel-side support frame unit may include: a pair of first support frames disposed in a vehicle width direction of a vehicle, extending in a front-to-rear direction of the vehicle, and each having a first connection groove formed at a front end thereof; a pair of second support frames disposed at the front of the pair of first support frames, respectively, so as to be spaced apart from the pair of first support frames, respectively, extending in the front-to-rear direction, and each having a second connection groove formed at a rear end thereof; a connection frame having connection protrusions inserted into the first and second connection grooves, respectively; an adhesive part applied onto an outer circumferential surface of each of the connection protrusions, and adhered to the inner circumferential surfaces of the first and second connection grooves; and a fastening member coupled to each of the connection protrusions through each of the first and second support frames.