Battery Module Case Sliding Sub-Modules Assembly
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Solution Overview
Problem
The assembly and mounting of large-sized battery modules with multiple pouched type lithium secondary batteries are complex due to mechanical and electrical connections, requiring significant space and time for assembly and disassembly, and there is a need for a compact structure that enhances heat radiation and minimizes external impacts.
Innovation Solution
A battery module case with an assembly type structure comprising sub-battery modules slidably mounted in vertical or horizontal directions, featuring an upper, lower, and side housing with partition walls and buffering members, allowing for easy modulation of battery cells, simplified assembly, enhanced heat radiation, and impact absorption using aluminum laminate sheets for covering and increased rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple pouched type lithium secondary batteries are multilayered and connected to configure a middle and large-sized battery module, then high voltage and power are achieved, but the assembly process becomes significantly complicated and the system size increases
Solution Approach 1:
The patent merges mechanical connection and electrical connection functions into a single integrated structure. The connection member simultaneously provides mechanical support for multilayering batteries and electrical connection through conductive elements, eliminating the need for separate mechanical fixtures and electrical connectors, thus simplifying the assembly process while maintaining high power output
2Power
If multiple pouched type lithium secondary batteries are multilayered and connected to configure a middle and large-sized battery module, then high voltage and power are achieved, but a large space is required for coupling, welding, and soldering members
Solution Approach 1:
The connection member integrates mechanical support and electrical connection functions in a compact unified structure, eliminating the need for separate mechanical fixtures and electrical connectors that would require additional space for coupling, welding, and soldering operations
Solution Approach 2:
The connection member serves multiple functions simultaneously: it provides mechanical support for multilayering, electrical connection through conductive elements, and structural stability, thereby reducing the overall system volume by eliminating the need for multiple specialized components
3Reliability
If a conventional battery module case structure is used, then mechanical and electrical connections are established, but assembly and disassembly require significant time and many processes
Solution Approach 1:
The battery module case is segmented into an upper case and a lower case that can be easily separated, with the connection member integrated into the lower case. This segmentation allows for rapid assembly by simply joining the two case halves and quick disassembly by separating them, significantly reducing assembly time while maintaining connection reliability through the integrated connection member design
Data Source
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AI summary
The present invention relates to a battery module case, and more particularly, to a battery module case in which sub-battery modules are slidably mounted in a vertical or horizontal direction, wherein each sub-battery module comprises one or more battery cells, electrode tabs extending in one direction from the respective battery cells, and a pouched type case consisting of aluminum laminate sheets for covering the surfaces of the battery cells, except for the surfaces on which the electrode tabs are formed. The battery module case of the present invention is formed into an assembly type structure to be coupled to the outer surfaces of the sub-battery modules, wherein the outer surfaces include surfaces on which the electrode tabs are formed. At least two or more sub-battery modules are stacked and arranged in parallel, such that the surfaces on which the electrode tabs are formed are aligned in the same direction.