Battery Module Cell Stack Interconnection Through a Central Housing Opening
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Solution Overview
Problem
Existing high-voltage battery module designs face challenges in efficiently utilizing installation space for interconnecting cell stacks, leading to less compact and potentially heavier battery modules.
Innovation Solution
The method involves electrically interconnecting cell stacks in a central region of the battery module housing using a single opening in the wall, allowing for compact arrangement and mechanical stability, with high-voltage connectors making contact through this opening, enabling easy assembly and reduced installation space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If cell stacks are interconnected at the remote end sides of the battery module housing, then the electrical connection is established, but the installation space is not efficiently utilized and the battery module becomes less compact
Solution Approach 1:
Instead of connecting cell stacks at the remote end sides (conventional approach), the patent inverts the connection location to the central region of the battery module housing. This inversion allows the high-voltage connectors to be accessible through openings in the central region, enabling efficient space utilization while maintaining ease of manufacture and assembly.
2Ease of operation
If multiple openings are provided in the battery module housing for electrical interconnection, then accessibility for interconnection is improved, but the structural integrity and sealing of the housing is compromised
Solution Approach 1:
The patent merges multiple interconnection functions into a single opening in the central region of the housing. Both cell stacks of the first group and both cell stacks of the second group are electrically interconnected through this single opening, thereby maintaining housing structural integrity and sealing while providing adequate accessibility for all interconnections.
3Volume of moving object
If cell stack groups are arranged with ends toward one another in opposing mounting directions, then the battery module can be made more compact, but the interconnection complexity increases
Solution Approach 1:
The patent introduces a central region of the battery module housing as an intermediary space where all electrical interconnections occur. This central intermediary region with its opening serves as a hub through which both cell stack groups are connected to each other, simplifying the interconnection process despite the opposing mounting directions of the cell stack groups.
Data Source
AI summary
A method for interconnecting cell stacks of a battery module in a battery. In the battery module, the cell stacks are arranged in a battery module housing. In each case two cell stacks are arranged next to one another and form a cell stack group, and the two cell stack groups are arranged behind one another. The two cell stacks of the first cell stack group are inserted into the battery module housing. The two cell stacks of the first cell stack group are electrically interconnected via at least one opening arranged in a wall of the battery module housing. The two cell stacks of the second cell stack group are inserted into the battery module housing. Electrically interconnecting the two cell stacks of the second cell stack group to each one of the two cell stacks of the first cell stack group.