Battery Pack Cell Holder With Support Ribs For Pouch Cells
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Solution Overview
Problem
Existing battery packs face challenges in securely supporting pouch-type battery cells with flexible cases, which are prone to damage during assembly and welding due to wobbling and collision, and lack efficient expansion capabilities to increase output power.
Innovation Solution
A battery pack design featuring a cell holder with integrated support ribs that protrude to stabilize the terraces of battery cells, allowing for secure positioning and electrical connection, and expansion connection parts for modular expansion of battery cells, enabling increased capacity and power without additional parts or processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pouch-type battery cells with flexible cases are used, then adaptability and ease of assembly are improved, but the cells become prone to damage during assembly and welding due to wobbling and collision
Solution Approach 1:
The patent introduces a cell holder as an intermediary component between the pouch-type battery cells and the battery pack structure. The cell holder includes support ribs that extend into the battery cell cases to provide internal support, preventing wobbling and collision during assembly and welding operations. This mediator structure enables the use of flexible pouch cells while eliminating their vulnerability to mechanical damage.
Solution Approach 2:
The cell holder is segmented into multiple support ribs that are distributed throughout the battery pack structure. Each support rib is positioned to support specific battery cells or groups of cells, providing localized reinforcement where needed. This segmentation allows the support structure to adapt to different cell arrangements while maintaining reliability across the entire battery pack.
2Productivity
If traditional battery pack structures are used, then manufacturing simplicity is maintained, but expansion capabilities to increase output power are limited
Solution Approach 1:
The cell holder is designed with universal features including expansion connection parts that enable the battery pack to be expanded by adding more cell holders and battery cells. The support rib structure and cell holder design can accommodate varying numbers of cells while maintaining the same basic architecture, allowing the battery pack to scale in output power without requiring fundamentally different design approaches.
3Reliability
If support structures are added to prevent battery cell damage, then reliability is improved, but device complexity increases
Solution Approach 1:
The support ribs are merged with the cell holder structure, forming an integrated component rather than separate parts. The support ribs are formed as integral extensions of the cell holder body, eliminating the need for additional assembly steps and reducing the number of discrete components. This merging approach provides reliable support while minimizing the increase in device complexity.
Data Source
AI summary
A battery pack includes a battery cell including an electrode tab, a cell holder through which the electrode tab is inserted, and a support rib protruding from the cell holder toward the battery cell, the support rib supporting a terrace of the battery cell from which the electrode tab extends.