Battery Cell Connecting Plate Structure for Pack Rigidity
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Solution Overview
Problem
Existing battery technologies face challenges in ensuring the safety and stability of battery packs due to inadequate connection and restraint mechanisms, leading to high failure probabilities and resonance risks.
Innovation Solution
A battery design that incorporates a connecting member with perpendicular first and second connecting plates to enhance the connection and restraint of battery cells, increasing the contact area and rigidity, and includes water cooling channels for thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional connection mechanisms are used for battery cells, then the device complexity is reduced, but the reliability and rigidity of the battery pack deteriorate
Solution Approach 1:
The connecting member is segmented into two perpendicular plates: a first connecting plate for connecting to battery cells and a second connecting plate for connecting to the carrying assembly. This segmentation allows each plate to be optimized for its specific function, improving overall connection reliability while maintaining manageable structural complexity
Solution Approach 2:
The connecting member transitions from a single-plane structure to a three-dimensional L-shaped structure with perpendicular plates. This dimensional change increases the spatial distribution of connection points and provides restraint in multiple directions, significantly enhancing battery pack rigidity and safety
2Stability of the object's composition
If the connection area between battery cells and carrying assembly is increased, then the connection stability is improved, but the device complexity increases
Solution Approach 1:
By extending the connection interface into a second dimension with perpendicular plates, the connecting member provides multiple contact surfaces (first connecting plate contacting battery cells, second connecting plate contacting carrying assembly) without requiring a complex multi-component system
Solution Approach 2:
The connecting member serves multiple functions simultaneously: it provides mechanical connection, structural restraint, and thermal conduction pathways. The perpendicular plate structure enables these multiple functions to be achieved through a single integrated component rather than multiple specialized parts
3Temperature
If water cooling channels are added to the connecting member, then the thermal management efficiency is improved, but the manufacturing complexity increases
Solution Approach 1:
The water cooling channels are merged directly into the connecting member structure during manufacturing. This integration allows the thermal management function to be achieved through the existing connecting member geometry without requiring separate cooling components or complex assembly procedures
Solution Approach 2:
The connecting member material and geometry are optimized to incorporate cooling channels, changing the manufacturing parameters to include internal cavity formation. This allows thermal management functionality to be added while maintaining a relatively simple single-component manufacturing process
Data Source
AI summary
A battery includes at least one row of battery cells, a carrying assembly, and a connecting member. Each row of battery cells includes at least two battery cells arranged along a first direction. The carrying assembly is configured to carry the at least one row of battery cells. The connecting member includes a first connecting plate and a second connecting plate fixedly connected to each other. The first connecting plate is perpendicular to the second connecting plate. The first connecting plate extends in the first direction. The first connecting plate is connected to at least some battery cells in the at least one row of battery cells. The second connecting plate is configured to be fixedly connected to the carrying assembly of the battery.