Cylindrical Battery Module Assembly With Integrated Gas Venting
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Solution Overview
Problem
Battery modules face challenges in the stable and easy installation of cylindrical battery cells, which can lead to gas entrapment due to complex assembly processes and the use of multiple parts.
Innovation Solution
A battery module design featuring a lower casing with gap-maintaining ribs and busbars that facilitate the adjacent placement of battery cells, allowing for easy electrical connection and gas discharge, along with an upper casing for enclosure, simplifies the assembly process and ensures stable mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If cylindrical battery cells are installed in a battery module, then electrical output is provided by combining multiple battery cells, but installation becomes difficult and unstable
Solution Approach 1:
The battery module uses individual cell holders for each cylindrical battery cell, allowing each cell to be independently installed and secured. This segmentation approach simplifies the installation process while maintaining stable positioning of multiple cells to achieve the desired electrical output.
Solution Approach 2:
Cell holders serve as intermediary components between the battery cells and the module structure. These holders facilitate easy installation by providing a standardized interface and secure mounting mechanism, resolving the contradiction between providing electrical power through multiple cells and enabling easy installation.
2Power
If battery cells are accommodated in a battery module, then electrical connection is achieved, but gas discharged during use becomes trapped
Solution Approach 1:
The design extracts the gas venting function from the battery cell itself and provides a separate gas discharge path through the cell holder and module structure. This allows the electrical connection to be maintained while the harmful gas is actively removed from the enclosed space.
Solution Approach 2:
The gas discharge path converts the harmful effect of trapped gas into a controlled venting mechanism. The cell holders include features that guide and channel the discharged gas away from the battery cells, transforming a potential safety hazard into a managed operational characteristic.
3Reliability
If assembly of battery module is achieved with multiple parts, then electrical connection and mounting are secured, but assembly process becomes complex
Solution Approach 1:
The cell holder design merges multiple functions into a single integrated component: mechanical support for the battery cell, electrical connection through integrated busbars, and gas discharge pathways. This consolidation reduces the number of separate parts while maintaining mounting stability and simplifying the assembly process.
Solution Approach 2:
The cell holders are designed as universal components that simultaneously provide structural support, electrical connection, and gas venting capabilities. This multi-functionality approach maintains reliable mounting of battery cells while reducing overall device complexity by eliminating the need for separate components for each function.
Data Source
AI summary
A battery module may comprise a lower casing configured to accommodate battery cells adjacent to each other and restrain opposite ends of the battery cells. Busbars may be provided in the lower casing and may be configured to form an electrical connection between the battery cells accommodated in the lower casing. The battery module may comprise an upper casing that may be coupled to the lower casing such that the upper casing and lower casing may be configured to enclose battery cells accommodated inside the lower casing.