Battery Pack Partition Wall Paste Injection for Cell Group Fixing
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Solution Overview
Problem
Existing battery packs face challenges in efficiently fixing cell groups to the housing, which affects production efficiency and quality.
Innovation Solution
A battery pack design that includes a housing with a partition wall featuring an injection channel and injection port, allowing paste to be injected into the gap between the partition wall and cell group, along with protrusions and flanges to secure and position the cell group effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cell groups are assembled in the housing without battery modules, then the structure is simplified and productivity is improved, but the fixation efficiency and quality deteriorate
Solution Approach 1:
The injection channel is pre-formed in the partition wall, and the paste injection process is designed to occur before final assembly completion. This preliminary action ensures proper adhesive distribution in the gap between partition wall and cell group, achieving reliable fixation while maintaining simplified structure and high productivity
2Reliability
If paste is injected into the gap between partition wall and cell group, then the fixation efficiency is improved, but the device complexity increases due to injection channel requirements
Solution Approach 1:
The partition wall serves multiple functions: it provides structural separation, forms the injection channel for paste delivery, and acts as a mounting surface for the cell group. By integrating the injection channel function into the existing partition wall structure, the patent avoids adding separate complexity while achieving efficient fixation
3Ease of operation
If the injection port is provided at the end face of the partition wall, then the access for injection equipment is improved, but the paste distribution uniformity deteriorates
Solution Approach 1:
The injection channel extends from the end face (easy access point) through the partition wall to the gap between the partition wall and cell group. This three-dimensional channel structure allows injection equipment to access from the convenient end face position while ensuring paste is delivered uniformly to the entire gap area, resolving the contradiction between accessibility and distribution uniformity
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 efficient fixation of the cell group to the housing, improving production efficiency and quality by ensuring proper positioning and retention, even if adhesive peels off after assembly.
Implementation Method 1
paste filled into a gap between the partition wall and the cell group
Data Source
AI summary
A configuration is provided so as to enable efficient fixing of cell groups to a housing of a battery pack. A housing of a battery pack has inside thereof a partition wall which extends in an extending direction and projects in a projecting direction. A cell group has a plurality of battery cells side-by-side in the extending direction one a side of the partition wall. Paste is filled into a gap between the partition wall and the cell group. The partition wall has an injection channel. The injection channel has an injection port for injecting the paste, and an inlet which communicates with the injection port and opens to the gap.