Multi-Row Battery Module Assembly for Cooling and Swelling Control
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Solution Overview
Problem
Conventional battery module assemblies face challenges in standardization, high production costs, reduced space efficiency, and low unit volume energy due to diversified cell sizes, difficulty in designing cell fixing structures for pouch cells, and inefficiencies in cylindrical cells, leading to issues with durability and cooling effects.
Innovation Solution
A battery module assembly with a multi-row structure featuring a cell array stacked in one direction, pressurized by side plates and guided by I-type cross-section inner and side guide brackets, along with a tightening band to enhance rigidity and cooling, and a method of manufacturing that includes forming multi-row structures with adjustable components for improved durability and standardization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If battery cells are stacked in one direction to form a cell array, then the battery module assembly can be formed, but standardization becomes difficult when cell sizes are diversified
Solution Approach 1:
The side plate is designed with a universal structure that can accommodate multiple cell types (prismatic, pouch, cylindrical) through standardized mounting interfaces and adjustable positioning features, allowing one component to serve multiple cell configurations without requiring dedicated fixtures for each cell type
2Reliability
If plates or frames surround the cell array to bound it, then the battery module assembly is formed, but production facility investment cost becomes excessive
Solution Approach 1:
The bounding structure is divided into modular side plates that can be independently manufactured and assembled, replacing expensive custom-molded frames with standardized, mass-producible plate components that reduce tooling and facility investment requirements
3Temperature
If air inlet space is provided between the plate and cell array to increase cooling effect, then cooling efficiency improves, but space efficiency is reduced
Solution Approach 1:
Cooling channels and air inlet spaces are strategically positioned at specific locations where heat generation is highest, providing concentrated cooling where needed rather than uniform spacing throughout, thereby maintaining cooling effectiveness while minimizing overall space consumption
4Reliability
If internal buffer structure is applied to accommodate cell thickness changes, then durability is maintained, but unit volume energy is reduced
Solution Approach 1:
The side plate incorporates flexible elements and adjustable positioning mechanisms that dynamically adapt to cell expansion and contraction during charging cycles, maintaining structural support without requiring fixed buffer spaces that would reduce energy density
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 solution enhances durability, cooling efficiency, and standardization of components, improves space utilization, and prevents cell swelling, resulting in a more efficient and cost-effective battery module assembly with increased energy density.
Implementation Method 1
a side plate connected to one lateral side of the cell array to pressurize the cell array
Implementation Method 2
a plurality of the battery cells are arranged and stacked in one direction to form a cell array... to increase a cooling effect of the cells
Data Source
AI summary
A battery module assembly includes a cell array configured by stacking a plurality of cells in a same direction, and a side plate connected to one lateral side of the cell array to pressurize the cell array. Plural ones of the cell array are connected in a transverse direction to form a multi-row structure.