Battery Module Venting Layout to Prevent Serial Ignition
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Solution Overview
Problem
Existing battery modules face the risk of serial ignition due to heat, flame, and venting gas discharge towards adjacent modules during an ignition event, and end plates may fall off under increased pressure, compromising safety and space efficiency.
Innovation Solution
The battery module design features terminals and sealed portions that vent heat, flame, and gas upward, with end plates integrated to prevent falling and optimize space utilization by positioning components to minimize lateral discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If terminals are positioned at end plates for conventional connection, then electrical connection is simplified, but heat and flame discharge towards adjacent battery modules causing serial ignition risk
Solution Approach 1:
The patent repositions terminals from the end plates (horizontal dimension) to the top plate (vertical dimension). This dimensional change redirects the venting direction from horizontal (towards adjacent modules) to vertical (upward), eliminating the serial ignition risk while maintaining electrical connection functionality
Solution Approach 2:
The patent utilizes the venting function to redirect harmful heat and flame discharge away from adjacent modules by positioning terminals at the top plate, converting the potentially harmful horizontal discharge into a beneficial upward discharge that protects surrounding battery modules
2Ease of manufacture
If end plates are separately attached to housing, then assembly is flexible, but end plates may fall off under increased internal pressure compromising safety
Solution Approach 1:
The patent integrates the end plates with the housing into a single unified structure, eliminating the separate attachment relationship. This merging ensures that end plates cannot detach under pressure while maintaining manufacturing feasibility through integrated forming processes
3Ease of manufacture
If components are positioned for conventional layout, then manufacturing is standard, but space utilization is inefficient and lateral discharge affects adjacent modules
Solution Approach 1:
The patent repositions terminal connections from the horizontal plane (end plates) to the vertical plane (top plate), optimizing space utilization by utilizing the vertical dimension and preventing lateral discharge interference with adjacent battery modules
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 design effectively directs venting gases and heat upward, reducing serial ignition risks and maintaining structural integrity during pressure increases, while enhancing space efficiency.
Implementation Method 1
heat, flame and venting gas generated by vaporization of the electrolyte charged in the battery cell 21 may be discharged from the battery cell 21
Implementation Method 2
heat, flame and venting gas generated by vaporization of the electrolyte charged in the battery cell 21
Data Source
AI summary
The present invention relates to a battery module provide with a negative terminal and a positive terminal at an upper portion thereof. The battery cell included in the battery module is provided with a negative lead and a positive lead protruding from one widthwise side thereof, and the battery cell laminate including a plurality of stacked battery cells is connected to the terminals through a plate-shaped busbar frame provided thereabove.