Battery Cell Module Bracket Layout for Tab Isolation Under Vibration
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Solution Overview
Problem
Existing battery packs face issues with unconnected tabs coming into contact due to vibration, leading to short circuits, especially in power tools like robotic vacuum cleaners and circular saw cutting machines, as the adapter plate occupies valuable space and is not effectively secured.
Innovation Solution
A battery cell module design featuring a bracket with barriers and insulation members to separate unconnected tabs, using a flexible circuit board and barriers to prevent contact between adjacent battery cells, ensuring electrical separation even during intense vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the adapter plate is replaced with a flexible circuit board to reduce battery space, then the volume of the battery pack is reduced, but unconnected tabs may come into contact during vibration causing short circuits
Solution Approach 1:
The patent introduces barrier members as intermediary elements positioned between unconnected tabs to prevent direct contact. These barriers act as mediators that maintain electrical isolation without requiring the tabs to be physically separated, thus preventing short circuits while allowing compact battery cell arrangement.
Solution Approach 2:
The patent extracts the electrical connection function from the traditional rigid adapter plate and transfers it to flexible circuit boards that connect only to necessary tabs. This extraction allows unconnected tabs to remain isolated while maintaining necessary electrical connections, preventing short circuits without sacrificing space efficiency.
2Volume of moving object
If battery cells are arranged closely to reduce volume, then space utilization is improved, but the risk of tab contact and short circuits increases under vibration
Solution Approach 1:
The patent segments the battery cell arrangement by introducing barrier members that divide the space between adjacent cells. This segmentation allows cells to be positioned closely for compact volume while the barriers create distinct zones that prevent tab contact, thus reducing short circuit risk without compromising space utilization.
Solution Approach 2:
Barrier members serve as intermediary elements inserted between closely arranged battery cells. These intermediaries maintain the close spacing for volume reduction while physically preventing harmful tab contact, thus resolving the contradiction between compact arrangement and short circuit prevention.
3Reliability
If vibration resistance is improved by securing tabs more firmly, then reliability under vibration is enhanced, but the device complexity and space requirements increase
Solution Approach 1:
The patent extracts the vibration resistance function from complex mechanical securing structures and transfers it to simple barrier members that passively prevent tab contact. This extraction reduces device complexity while maintaining reliability under vibration through the straightforward barrier mechanism.
Solution Approach 2:
The barrier members provide self-service vibration protection by their very presence and positioning. They automatically prevent tab contact during vibration without requiring additional active securing mechanisms, thus improving vibration resistance while minimizing device complexity.
Data Source
AI summary
A battery cell module includes a plurality of stacked battery cells, a collection member, and a bracket. The battery cell includes tabs and a cell body; and the collection member is connected to the tabs; where in two adjacent battery cells, a first battery cell includes a first tab and a second tab, the second battery cell includes a third tab and a fourth tab, and the first tab is connected to the third tab. The bracket includes a fixing plate and a first barrier provided on the fixing plate, where the collection member is provided between the fixing plate and the cell body; and the first barrier is provided between the second tab of the first battery cell and the fourth tab of the second battery cell.