Battery Pack Cooling Plate With Positioning Protrusions
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Solution Overview
Problem
Existing battery packs for electric and hybrid vehicles lack an efficient and reliable method for cooling secondary battery modules during charging and discharging, which can lead to reduced performance and lifespan due to inadequate heat management.
Innovation Solution
A battery pack design featuring a plate-shaped cooling plate with a coolant circulation path, stoppers, and brackets that allow for reliable welding without fixing jigs, ensuring consistent heat dissipation and module mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling plate is used to cool battery modules, then heat dissipation efficiency is improved, but manufacturing complexity increases due to the need for precise positioning and welding fixtures
Solution Approach 1:
The cooling plate is designed with pre-formed positioning protrusions that engage with corresponding positioning grooves on the battery module housing. This preliminary positioning structure eliminates the need for complex welding fixtures during assembly, allowing the cooling plate to be accurately positioned and welded directly to the battery module while maintaining heat dissipation efficiency.
2Temperature
If battery modules are mounted directly on the cooling plate, then heat transfer is improved, but positioning accuracy deteriorates without additional fixing structures
Solution Approach 1:
The cooling plate is segmented into multiple functional regions: a mounting surface with positioning protrusions for accurate battery module placement, a coolant circulation channel for heat dissipation, and a welding surface for secure attachment. This segmentation allows each region to optimize its specific function while maintaining overall positioning accuracy and heat transfer efficiency.
3Manufacturing precision
If welding fixtures are used to ensure precise bracket welding, then welding precision is improved, but device complexity and manufacturing time increase
Solution Approach 1:
The positioning protrusions and welding surfaces are merged into the cooling plate structure itself, eliminating the need for separate welding fixtures. The cooling plate serves dual functions: providing thermal management and ensuring precise positioning for welding. This integration simplifies the manufacturing process while maintaining high welding precision between the cooling plate and battery modules.
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 design effectively manages heat generated by secondary battery modules during charging and discharging, enhancing the performance and lifespan of the battery pack by ensuring efficient cooling and secure module mounting.
Implementation Method 1
a plate-shaped cooling plate (120) on which a plurality of battery modules (110) are mounted
Implementation Method 2
The cooling plate may include a coolant circulating route (122) in an internal space between the top surface (120a) and the bottom surface (120b)
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
A battery pack including a plate-shaped cooling plate; a plurality of battery modules, the plurality of battery modules being mounted on a top surface of the cooling plate; and at least one bracket on one lengthwise side of the cooling plate.