Battery Pack Partitioned Cell Block Assembly for Swelling Absorption
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Solution Overview
Problem
The existing manufacturing process for battery packs is complicated due to a two-step assembly process requiring the formation of battery modules before housing them in a pack, which complicates the overall process and may necessitate additional swelling absorption components.
Innovation Solution
A battery pack design that integrates a lower pack housing with partition walls and cell blocks, where each cell block includes a battery cell stack, a holding band, and a side surface plate, coupled by a bolt to a partition wall, allowing direct assembly without intermediate modules, and absorbing swelling through elastic side surface plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery modules are manufactured separately and then housed in battery packs, then battery cell swelling can be absorbed through compression pads, but the manufacturing process becomes complicated with multiple assembly steps
Solution Approach 1:
The patent merges the battery module structure directly with the battery pack housing by integrating the compression pad function into the pack housing itself. The partition wall of the pack housing serves dual purposes: structural support and swelling absorption through its elastic deformation capability, eliminating the need for separate module assembly and reducing manufacturing steps.
Solution Approach 2:
The partition wall is designed to perform multiple functions simultaneously: it provides structural support for the battery cells, acts as a swelling absorption mechanism through elastic deformation, and serves as a mounting structure for the battery module. This multi-functionality eliminates the need for separate compression pads and simplifies the overall structure.
2Reliability
If battery modules are manufactured separately before assembly into packs, then proper swelling absorption can be ensured, but manufacturing time and cost increase due to two-step assembly
Solution Approach 1:
The patent combines the module assembly and pack assembly into a single integrated process. The battery cells are directly mounted in the pack housing with the partition wall providing swelling absorption, eliminating the intermediate module manufacturing step and improving manufacturing efficiency.
Solution Approach 2:
The pack housing is segmented into multiple module regions by partition walls, allowing independent battery cell arrangements in each region. This segmentation enables direct assembly of battery cells into the pack without requiring pre-assembled modules, simplifying the manufacturing process while maintaining proper swelling absorption in each region.
3Device complexity
If battery cells are directly housed in the pack without modules, then manufacturing process is simplified, but swelling absorption mechanisms may be required
Solution Approach 1:
The partition wall is designed to serve dual purposes: providing structural organization for directly housed battery cells and simultaneously acting as the swelling absorption mechanism through its elastic deformation capability. This eliminates the need for separate compression pads while maintaining proper swelling management.
Solution Approach 2:
The partition wall is designed with specific elastic properties that allow it to deform under compression from swelling battery cells. By changing the material parameters and geometric design of the partition wall, it can absorb swelling forces while maintaining structural integrity, making the swelling absorption function inherent to the housing structure.
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 simplifies the manufacturing process, reduces costs, and enhances assembly efficiency by directly integrating battery cells into the pack, while providing effective swelling absorption and structural stability.
Implementation Method 1
a side surface plate located between the battery cell stack and the partition wall... absorbing swelling through elastic side surface plates
Data Source
AI summary
A battery pack includes a lower pack housing having a plurality of module regions; a partition wall that partitions the plurality of module regions; a cell block that is mounted in each of the plurality of module regions; and a coupling member that couples the cell block and the partition wall, wherein the cell block includes a battery cell stack formed by stacking a plurality of battery cells; and a side surface plate located between the battery cell stack and the partition wall.