Battery Module Connection Board Locking Around Cooling Channels
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Solution Overview
Problem
In medium- or large-sized battery modules, the integration of a connection board with a safety system poses space constraints and stability issues due to the need for a separate frame for external input/output terminals, which can reduce energy density and increase the risk of separation under vibration or impact.
Innovation Solution
A connection board with a concave-convex structure and locking members is designed to be coupled to a battery module without invading the cooling path, featuring protrusions between air channels and a locking mechanism to secure the board in place, ensuring stability and minimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a separate frame is used for installing external input/output terminal components, then the battery module can be assembled, but the space occupied by such installed components increases, causing battery capacity per unit volume to decrease
Solution Approach 1:
The patent merges the connection board with the housing by integrating the external input/output terminal components directly into the housing structure. The connection board is coupled to the housing such that terminal components are installed within the housing's internal space rather than requiring a separate frame, thereby combining multiple functions into a single integrated structure and increasing battery capacity per unit volume.
2Stability of the object's composition
If the connection board is coupled tightly to the battery module, then stability is improved, but the cooling path structure may be invaded or obstructed
Solution Approach 1:
The patent applies local quality by designing the connection board with a non-uniform thickness profile. The connection board has a first thickness in regions that do not interfere with cooling paths and a second, greater thickness in regions requiring enhanced stability or connection strength. This localized variation in thickness allows the connection board to maintain stability while preserving cooling path functionality in critical areas.
3Quantity of substance
If the connection board is made thinner to reduce space usage, then energy density is improved, but the connection board may separate under vibration or impact
Solution Approach 1:
The patent transitions from a two-dimensional connection approach to a three-dimensional locking mechanism. The connection board includes protrusions that extend into corresponding recesses in the housing, creating mechanical interlocking in the vertical dimension. This dimensional transition allows a thinner connection board to achieve superior resistance to separation under vibration or impact, as the protrusions prevent disengagement without requiring increased overall thickness.
Data Source
AI summary
A battery module includes: a housing accommodating a plurality of battery cells, the housing including a bottom plate and a side plate. A connection board is located on one end or both ends of the housing. The connection board is coupled to the side plate, a plurality of air channels are formed in the side plate, and the connection board includes a plurality of protrusions located between adjacent air channels of the plurality of air channels.