Battery Module Connection Board Locking Between Air Channels
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Solution Overview
Problem
Existing battery modules face challenges in maintaining the connection between the connection board and the housing, especially under conditions of vibration and impact, which can lead to separation and potential safety hazards.
Innovation Solution
The battery module incorporates a connection board with protrusions that are securely fastened between air channels on the side plate, along with a locking member to prevent separation from the housing, thereby enhancing stability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the connection board is installed in the battery module, then the electrical connection is established, but the connection board may separate during vibration and impact
Solution Approach 1:
The connection board is divided into multiple parts: the main body, protrusions extending from sides, and locking members at ends. This segmentation allows each part to perform specific functions - protrusions for positioning and locking members for securing - thereby preventing separation during vibration and impact while maintaining reliable electrical connection
Solution Approach 2:
The protrusions are pre-formed on the connection board before assembly, positioned to extend between air channels. This preliminary positioning ensures that when the connection board is installed, the protrusions automatically engage with the housing structure, preventing separation before vibration or impact occurs
2Reliability
If safety systems including sensing devices and BMS are added to medium or large-sized battery modules, then safety is improved, but the space occupied by the safety system increases
Solution Approach 1:
The connection board integrates multiple functions: electrical connection through bus bars, mechanical support for sensing devices, and structural anchoring via locking members. By merging these functions into a single component rather than using separate elements, the design maintains safety requirements while minimizing the space occupied by safety system components
Solution Approach 2:
The connection board serves multiple purposes: it provides electrical connections, supports sensing devices, anchors the battery module structure, and prevents separation during vibration. This multi-functionality reduces the need for additional separate components, thereby optimizing space usage while maintaining comprehensive safety
3Ease of operation
If external input/output terminal components are installed in the battery module, then power supply to external devices is enabled, but the space occupied by installed components increases
Solution Approach 1:
The external input/output terminals are integrated with the connection board structure, utilizing the same mounting area and structural support. This merging of functions allows power supply capability to be added without requiring separate dedicated space for terminal components, thereby maintaining ease of operation while minimizing volume increase
Data Source
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AI summary
Disclosed is a battery module including: a housing accommodating a plurality of battery cells and including a bottom plate and a side plate; and a connection board located on one end or both ends of the housing, in which the connection board is coupled to the side plate, a plurality of air channels is formed on the side plate, and the connection board includes a plurality of protrusions located between neighboring air channels among the plurality of air channels.