Battery Pack Bracket Venting for Cell Fixation and Gas Discharge
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Solution Overview
Problem
Existing battery packs face challenges in safely discharging flames and gas generated by secondary battery cell explosions and require separate fixing configurations that reduce energy density.
Innovation Solution
A battery pack design incorporating a frame and bracket system that integrates vent spaces for gas and flame discharge while securely fixing secondary battery cells, using a bracket that forms a path for discharge and fixes the cells to the frame, thereby reducing the occupied space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate fixing configuration is provided to secure secondary battery cells, then the reliability of cell fixation is improved, but the energy density is reduced due to occupied space
Solution Approach 1:
The bracket is designed to perform multiple functions simultaneously: it fixes the secondary battery cells to the frame while also defining the vent space. This merging of fixation and venting functions eliminates the need for separate components, thereby maintaining cell fixation reliability without reducing energy density
Solution Approach 2:
The bracket serves as a multi-functional component that provides both mechanical fixation for the battery cells and structural definition for the vent space. This universal design allows a single component to address both safety requirements (fixation and venting) without occupying additional space that would reduce energy density
2Object-affected harmful factors
If a separate venting configuration is provided to discharge flames and gas, then the safety is improved, but the energy density is reduced due to occupied space
Solution Approach 1:
The vent space definition function is merged into the bracket structure itself. The bracket's geometry creates the vent space between itself and the frame, eliminating the need for a separate venting component and preventing energy density reduction
Solution Approach 2:
The bracket is designed as a universal component that simultaneously provides mechanical support for cell fixation and structural definition for the vent space, allowing safety requirements to be met without dedicating separate space that would reduce energy density
3Object-affected harmful factors
If the bracket forms a path for discharge, then the safety is improved by enabling flame and gas discharge, but the device complexity is increased
Solution Approach 1:
The bracket is designed as a universal component that simultaneously provides mechanical support for cell fixation and structural definition for the vent space, allowing safety requirements to be met without dedicating separate space that would reduce energy density
Data Source
AI summary
A battery pack includes a cell group including a number of secondary battery cells; a frame accommodating the cell group therein; and a bracket coupled to the frame, linked to the cell group to fix the cell group to the frame, and defining a vent space together with the frame to form a path, through which flames or gas are discharged, when the flames or the gas is generated in one of the secondary battery cells.