Battery Cell Holder Groove Layout for Compact Sealing
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Solution Overview
Problem
Existing submerged battery modules face challenges in achieving effective sealing of battery cells due to the limitations of adhesives and O-rings, which affect the energy density and structural integrity of the battery module.
Innovation Solution
A holder with groove portions at different positions is designed to accommodate sealing members, allowing for a cascaded arrangement that reduces the cell-to-cell distance and increases energy density, while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If O-rings are used for sealing battery cells, then structural integrity and reliability are improved, but cell-to-cell distance increases and energy density decreases
Solution Approach 1:
The sealing function is segmented into multiple groove portions (first groove portion and second groove portion) positioned at different heights on the holder body. This allows the sealing members to be distributed at different positions, reducing the space each sealing member occupies and thereby reducing cell-to-cell distance while maintaining sealing reliability.
Solution Approach 2:
The sealing members are arranged in different spatial dimensions (different positions between upper and lower surfaces) rather than all at the same level. This vertical distribution in the third dimension reduces the horizontal space required for sealing, enabling smaller cell-to-cell distance and higher energy density.
2Device complexity
If adhesives are used for sealing battery cells, then device complexity is reduced, but structural integrity and sealing performance deteriorate
Solution Approach 1:
The holder body is designed with groove portions at different positions (different depths/heights) to accommodate sealing members. This geometric parameter change allows the sealing members to be optimally positioned for both sealing effectiveness and space efficiency, achieving reliable sealing without requiring complex adhesive systems.
3Quantity of substance
If cell-to-cell distance is reduced to increase energy density, then sealing reliability deteriorates, but if sealing members are enlarged for better sealing, then cell-to-cell distance increases
Solution Approach 1:
The sealing function is divided among multiple groove portions positioned at different heights. This segmentation allows smaller sealing members to be distributed vertically, providing adequate sealing coverage without requiring large horizontal space, thus maintaining small cell-to-cell distance while ensuring sealing reliability.
Solution Approach 2:
Sealing members are arranged in the vertical dimension (different positions between upper and lower surfaces) rather than only horizontally. This dimensional change allows compact horizontal spacing (high energy density) while maintaining effective sealing through vertical distribution of sealing elements.
Data Source
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AI summary
The present invention provides a holder for holding battery cells, the holder comprising: a body having an upper surface, a lower surface, a first through opening and a second through opening, each of the first through opening and the second through opening extending between the upper surface and the lower surface and each being arranged to receive a battery cell, a first groove portion provided in the body at the periphery of the first through opening, and a second groove portion provided in the body at the periphery of the second through opening, wherein the first groove portion is provided in the body at a first position between the upper surface and the lower surface and the second groove portion is provided in the body at a second position between the upper surface and the lower surface, wherein the second position is different than the first position.