Battery Module Insulation Board Bulge for Metal Particle Containment
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Solution Overview
Problem
Conventional battery modules face challenges in preventing metal particles generated during welding from entering the gaps between battery cells, leading to potential short circuits and increased difficulty in cleaning, which affects safety and reliability.
Innovation Solution
The introduction of an insulation board with a bulge that accommodates and shields electrode terminals, reducing the risk of metal particles entering between cells and simplifying the cleaning process by containing them on the board's surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If welding is performed to connect electrode terminals, then electrical connection is achieved, but metal particles are generated and scattered between battery cells
Solution Approach 1:
The insulation board acts as an intermediary component between the battery cells and the welding area. It includes a collection region specifically designed to intercept and collect metal particles before they can scatter between battery cells, thus resolving the contradiction between achieving reliable electrical connection and preventing contamination
Solution Approach 2:
The patent converts the harmful metal particles into a collectible substance by designing the insulation board with a collection region. The metal particles that would normally cause contamination are instead directed and collected in a designated area, transforming the harmful effect into a manageable situation where particles are contained and easier to remove
2Ease of manufacture
If metal particles are allowed to enter regions between battery cells, then welding process is simpler, but cleaning difficulty increases and safety decreases
Solution Approach 1:
The insulation board with its collection region extracts and separates metal particles from the general battery module environment. By providing a dedicated collection area, the design enables easier removal of particles during cleaning operations, thus resolving the contradiction between manufacturing simplicity and maintenance difficulty
Solution Approach 2:
The collection region on the insulation board converts the problematic scattered metal particles into a concentrated, easily accessible form. This allows the welding process to remain simple while the cleaning process becomes easier, as particles are already gathered in one location rather than dispersed throughout the module
3Ease of manufacture
If conventional insulation boards are used without bulges, then manufacturing is simpler, but metal particles can still enter gaps between battery cells
Solution Approach 1:
The patent introduces a vertical dimension to the insulation board by creating bulges that extend upward. This three-dimensional structure adds a new spatial dimension for particle collection, allowing the board to intercept particles falling from above while maintaining a relatively simple manufacturing process based on conventional molding techniques
Data Source
AI summary
This application relates to the technical field of energy storage devices, and in particular, to a device, a battery pack, and a battery module. The battery module includes a battery cell and an insulation board. The insulation board includes a body portion and a first bulge. The first bulge includes a sidewall and a top wall that close in to form an accommodation cavity. At least a part of an electrode terminal is accommodated in the accommodation cavity, and the top wall covers a part of the electrode terminal, thereby reducing a risk of letting metal particles or other impurities enter a position between the battery cells, where the metal particles are generated during welding. This reduces difficulty of cleaning the battery module, and improves safety and reliability of the battery module.