Clinched Battery Cooling Plate for Mixed-Material Joining
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Solution Overview
Problem
Conventional water-cooled type cooling members for battery modules face limitations due to poor material compatibility and joining issues, particularly when plates with different physical properties are welded, leading to potential damage and restricted material choices.
Innovation Solution
A mechanical fastening method, specifically clinching, is used to couple the upper and lower plates of the cooling member, allowing for the integration of various materials and preventing deformation during the manufacturing process, thereby enhancing the cooling efficiency and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a separate cooling plate is used to cool the battery module, then the cooling effect is improved, but the number of parts increases and assembly complexity increases
Solution Approach 1:
The patent merges the cooling plate with the battery module by forming the cooling plate as an integral part of the module structure. The cooling plate is formed by bending and welding side walls and bottom walls of the battery module, eliminating the need for a separate cooling plate component while maintaining effective cooling functionality.
2Temperature
If a separate cooling plate is used to cool the battery module, then the cooling effect is improved, but assembly complexity increases
Solution Approach 1:
The cooling plate is integrated into the battery module structure through bending and welding operations on the module's side walls and bottom walls, eliminating separate assembly steps for installing a distinct cooling plate component.
3Temperature
If the battery module has a complex structure to achieve good cooling, then cooling performance is improved, but production cost increases
Solution Approach 1:
The cooling plate is formed from the existing battery module walls through bending and welding, utilizing already-formed structural elements rather than requiring additional materials or complex manufacturing processes. This integration reduces production costs while achieving effective cooling.
4Loss of energy
If the battery pack has large internal resistance causing heat, then energy loss increases, but improving cooling adds complexity
Solution Approach 1:
The cooling system is integrated into the battery module structure itself, with the cooling plate formed from the module's side walls and bottom walls. This eliminates the need for separate cooling components while providing effective heat dissipation to reduce energy loss from internal resistance heating.
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 mechanical fastening method ensures uniform cooling performance, minimizes material restrictions, and prevents deformation, while maintaining dimensional stability and reducing manufacturing costs.
Implementation Method 1
a cooling plate, and a battery module housing, wherein the battery module housing comprises: a module back plate, a module side wall, a module bottom plate, and a module cover, characterized in that the cooling plate is integrated into the battery module structure
Implementation Method 2
the module side wall and the module bottom plate are bent to form a cooling plate
Data Source
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AI summary
An embodiment of the present disclosure provides a cooling member for cooling a battery cell, comprising: an upper plate, a lower plate, and an in-out port for injecting cooling water into an inner space between the upper plate and the lower plate, wherein the cooling member includes an indentation part formed by introducing the upper plate into the lower plate or introducing the lower plate into the upper plate, wherein a first indentation part is formed in the edge part of the cooling member, wherein a second indentation part is formed in the central part of the cooling member, and wherein a sealing pad is located between the upper plate and the lower plate that form the first indentation part.