Battery Pack with Integrated End Plate Fastening and Cooling
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Solution Overview
Problem
Existing battery packs for high-power and large-capacity applications face challenges in achieving compact size, stable fastening, and efficient cooling due to complex assembly processes and increased size from multiple fastening members and coolant channels, which can lead to heat accumulation and safety issues.
Innovation Solution
A battery pack design featuring a vertically stacked cell module structure with end plates for simplified assembly, integrated fastening, and a box-type pack case with intake ports for natural air cooling, reducing the need for additional fastening members and cooling channels, while enhancing thermal conductivity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple fastening members and coolant channels are added to achieve stable fastening and efficient cooling, then the reliability and cooling efficiency are improved, but the device complexity and volume increase
Solution Approach 1:
The end plate integrates both fastening function (through integrated fastening members) and cooling function (through integrated coolant channels) into a single structural component, replacing the need for separate fastening members and coolant channels, thus reducing device complexity while maintaining reliability and cooling efficiency
2Reliability
If multiple fastening members are used to achieve stable fastening, then the reliability is improved, but the volume and device complexity increase
Solution Approach 1:
The end plate combines multiple fastening members into a single integrated structure, reducing the number of separate components and the space they occupy, thereby maintaining fastening stability while reducing the overall battery pack volume
3Temperature
If multiple coolant channels are added to improve cooling efficiency, then the cooling efficiency is improved, but the device complexity and volume increase
Solution Approach 1:
The end plate integrates coolant channels directly into its structure, combining the cooling function with the structural support function, thereby improving heat dissipation efficiency while reducing the complexity of the cooling system
4Reliability
If multiple fastening members and coolant channels are used, then the reliability and cooling efficiency are improved, but the manufacturing complexity and time increase
Solution Approach 1:
The end plate is manufactured as a single integrated component that combines fastening members and coolant channels, simplifying the manufacturing process by reducing the number of separate parts that need to be assembled, while maintaining the reliability and cooling efficiency provided by these features
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 design enables a compact, stable battery pack with improved assembly efficiency, maximized cooling efficiency, and reduced size, addressing the challenges of heat dissipation and safety concerns in high-power applications.
Implementation Method 1
a box type pack case in which the battery module is mounted... with intake ports for natural air cooling
Data Source
AI summary
Disclosed herein is a battery pack including a battery module including a cell module stack having a structure in which a plurality of cell modules, each of which includes a battery cell mounted in a cartridge, is vertically stacked, a lower end plate to support a lower end of the cell module stack, an upper end plate to fix an uppermost cartridge of the cell module stack disposed on the lower end plate, and a voltage detection assembly to detect voltages of the battery cells, a box type pack case in which the battery module is mounted, a pack cover coupled to the pack case, and fastening extension members protruding upward from the battery module to couple the battery module to the pack case and the pack cover.