Battery Module Sheet Member Absorbs Mounting Impact
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Solution Overview
Problem
Conventional battery modules damage battery cells during mounting due to impact and vibration, causing electrode breakage and short-circuits, as the cells are pressed against the cell cartridge, which also restricts gas pocket formation.
Innovation Solution
A battery module design featuring a sheet member between the battery cell and the cell cartridge, with gaps between the cell corners and the cartridge frames, using double-sided adhesive tape or adhesive agents to fix the cell and cartridge, preventing direct contact and absorbing pressure, thus preventing damage and ensuring internal gas pockets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cell cartridge directly contacts and presses the battery cell corners to prevent motion, then the battery cell is restrained effectively, but impact and vibration during mounting are transferred to the cell corners causing damage
Solution Approach 1:
A buffer member is introduced as an intermediary element between the cell cartridge and the battery cell. This buffer member absorbs impact and vibration during mounting while still maintaining effective restraint of the battery cell, preventing damage to electrode assemblies and electrode leads
Solution Approach 2:
The buffer member is pre-installed in the cell cartridge to provide cushioning protection before the battery cell is mounted. This beforehand cushioning prevents impact damage during the mounting process by absorbing shocks and vibrations before they can reach the battery cell corners
2Object-affected harmful factors
If the cell cartridge structure is modified to prevent direct contact with battery cell corners, then damage is prevented, but the battery cell may not be easily fixed in the length direction
Solution Approach 1:
The buffer member enables indirect contact between the cell cartridge and battery cell. It prevents direct contact that causes damage while still providing effective fixation in the length direction through the intermediary buffer element
Solution Approach 2:
The buffer member functions as a flexible element that can deform to accommodate the battery cell while maintaining fixation. This flexible approach allows the cell cartridge to restrain the battery cell without rigid direct contact that would cause damage
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents damage to battery cells during mounting and operation by reducing the risk of electrode breakage and short-circuits, while allowing for proper gas pocket formation, enhancing the module's durability and reliability.
Implementation Method 1
using double-sided adhesive tape or adhesive agents to fix the cell and cartridge, preventing direct contact and absorbing pressure
Implementation Method 2
using double-sided adhesive tape or adhesive agents to fix the cell and cartridge
Data Source
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AI summary
Provided are a battery module capable of preventing damage of a battery cell in as case when the battery cell is mounted and accommodated in a cell cartridge, and a battery pack including the battery module. The battery module according to the present disclosure includes a plurality of battery cells, at least one cell cartridge configured to guide stacking of the plurality of battery cells and to mount therein at least one battery cell among the plurality of battery cells, and a sheet member provided between the battery cell and the cell cartridge, and the sheet member is adhered to the battery cell on a surface where the sheet member contacts the battery cell and is adhered to the cell cartridge on a surface where the sheet member contacts the cell cartridge, to fix the battery cell and the cell cartridge to each other via the sheet member.