Composite Battery Module End Plate for Rigidity Without Weight Gain
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Solution Overview
Problem
Conventional battery modules with metal end plates increase weight due to the weight of the end plate and insulating member, which is not optimal for weight reduction trends in vehicles.
Innovation Solution
A battery module with an end plate featuring an insulating part and reinforcing parts made of metal and plastic, where the reinforcing parts are inserted into the end plate to enhance rigidity and weldability while reducing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal end plate is used to ensure rigidity and weldability, then the structural strength and weldability are improved, but the weight of the battery module increases
Solution Approach 1:
The end plate is constructed as a composite structure combining metal and insulating materials. The metal portion provides rigidity and weldability to the module frame, while the insulating material portion reduces overall weight and provides electrical insulation. This composite approach resolves the contradiction by integrating materials with complementary properties in a single component.
Solution Approach 2:
The end plate is divided into distinct metal and insulating material portions rather than using a uniform material throughout. This segmentation allows each portion to fulfill its specific function - the metal portion for structural integrity and welding, the insulating portion for weight reduction and electrical isolation - thereby resolving the weight-strength contradiction.
2Reliability
If a metal end plate with insulating member is used to ensure protection and rigidity, then the protection and structural stability are improved, but the device complexity and weight increase
Solution Approach 1:
The metal end plate and insulating member are merged into a single integrated end plate component with a composite structure. This eliminates the need for separate assembly of multiple parts, reducing device complexity while maintaining the protective and insulating functions. The insulating material is incorporated directly into the end plate structure rather than being a separate component.
Data Source
AI summary
A battery module and a battery pack including the same are provided. The battery module includes a battery cell stack, a module frame, a busbar frame, and an end plate that covers the busbar frame and is coupled to the module frame, the end plate comprising an insulating part in which the reinforcing part is inserted, and the end plate having weldability and rigidity as well as reduced weight.