Battery Module Venting Structure for Upward Gas Discharge
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Solution Overview
Problem
Existing battery modules face the risk of serial ignition due to heat, flame, and venting gas discharge in the lengthwise direction, which can spread to adjacent modules, and end plates may fall off under increased pressure during ignition.
Innovation Solution
The battery module design includes terminals and electrode leads protruding in the upward direction, with a housing structure that prevents end plate detachment and guides venting gases upward through an integrated U-frame and busbar frame configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If terminals and electrode leads protrude in the lengthwise direction (conventional design), then space utilization is improved, but heat, flame, and venting gas discharge toward adjacent battery modules causing serial ignition risk
Solution Approach 1:
The patent changes the protrusion direction of terminals and electrode leads from the lengthwise direction (X1 axis) to the upward direction (Z1 axis). This dimensional change redirects the venting path of heat, flame, and gas away from adjacent battery modules positioned in the lengthwise direction, thereby preventing serial ignition while maintaining efficient space utilization through optimized housing structure
2Ease of manufacture
If end plates are separately attached to housing (conventional design), then manufacturing is easier, but end plates may fall off under increased internal pressure during ignition
Solution Approach 1:
The patent integrates the end plates and housing into a single integral structure, eliminating separate attachment joints. This merging ensures that the end plates cannot detach under increased internal pressure during battery ignition events, while the integral structure can still be manufactured using standard molding processes
3Object-affected harmful factors
If terminals protrude upward (new design), then venting direction is improved to prevent serial ignition, but manufacturing complexity increases
Solution Approach 1:
The housing structure is designed to perform multiple functions: it provides structural containment, integrates end plates for pressure resistance, and incorporates upward-protruding terminals for controlled venting. By making the housing multi-functional rather than adding separate components, the design achieves improved venting direction without proportionally increasing manufacturing complexity
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
This design effectively vents heat, flame, and gas upward, reducing the risk of serial ignition and improving space utilization while maintaining structural integrity during pressure increases.
Implementation Method 1
heat, flame and venting gas generated by vaporization of the electrolyte charged in the battery cell 21
Data Source
AI summary
A battery module includes a housing having an upper surface; a battery cell laminate accommodated in the housing, the battery cell laminate includes a plurality of stacked battery cells, each stacked battery cell having a pair of electrode leads; a busbar frame electrically interconnecting the pair of electrode leads of each of the stacked battery cells; and a positive terminal and a negative terminal electrically connected to the busbar frame, each of the positive terminal and the negative terminal protruding above the upper surface of the housing.