Battery Module Gas-Inducing Hole Layout for Ignition Delay
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Solution Overview
Problem
Conventional battery modules lack means to visually monitor gas generation and heat transfer processes, making it difficult to detect and address internal ignition or explosion risks.
Innovation Solution
Incorporation of gas inducing holes in the bus bar frame, module frame, and end plates to guide and observe gas flow, facilitating early detection and prevention of ignition propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a battery module is designed to accommodate 96 battery cells arranged in a 4x4x6 configuration, then the battery pack capacity is improved, but the battery module size increases significantly
Solution Approach 1:
The patent applies nesting by placing the battery cell array within an inner frame structure, which is then nested within the outer frame structure. The inner frame holds the 4x4x6 battery cell configuration, while the outer frame provides additional structural support and housing. This nested arrangement optimizes space utilization, allowing 96 cells to be accommodated efficiently without excessive volume increase, as each nested layer serves multiple functions (structural support, cell positioning, and space optimization).
2Reliability
If the battery module uses a fixed rigid structure to maintain stability, then the reliability is improved, but the ability to absorb external impact forces deteriorates
Solution Approach 1:
The patent implements dynamics by incorporating shock-absorbing elements and elastic components within the rigid frame structure. The outer and inner frames are connected through configurable support structures that can deform elastically under impact forces, allowing the module to absorb external shocks while maintaining overall structural stability. This dynamic response mechanism enables the battery module to withstand impact forces without compromising the reliability of the battery cell arrangement.
3Temperature
If the battery module uses a complex cooling system to manage heat from 96 battery cells, then the temperature control is improved, but the device complexity increases
Solution Approach 1:
The patent merges the cooling function with the existing frame structure by integrating cooling channels directly into the outer and inner frames. The structural frames serve dual purposes: providing mechanical support for the 4x4x6 battery cell configuration and simultaneously acting as heat dissipation pathways. This integration eliminates the need for separate complex cooling systems, as the frame structure itself conducts heat away from the battery cells, thereby controlling temperature without increasing device complexity.
4Ease of manufacture
If the battery module uses standardized connectors for battery cell connections, then the ease of manufacture is improved, but the manufacturing precision may deteriorate
Solution Approach 1:
The patent applies local quality by designing customizable connection structures at specific locations within the frame, rather than using uniform standardized connectors throughout. The connection structures are configured based on local requirements of the 4x4x6 battery cell arrangement, allowing for precise positioning and alignment at each connection point. This localized customization ensures high manufacturing precision for critical connections while maintaining ease of manufacture through modular design principles, where standardized components are used where appropriate but customized where precision is paramount.
Data Source
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AI summary
A battery module according to an embodiment of the present invention includes: a battery cell stacked member including at least one battery cell; a bus bar frame covering the upper surface of the battery cell stacked member and the side on which a lead of the battery cell is protruded; a module frame for accommodating a coupled body of the battery cell stacked member and the bus bar frame; and a pair of end plates coupled to the surface where the lead of the battery cell is disposed at both ends of the module frame, wherein a plurality of gas inducing holes are formed in at least one of an upper frame of the bus bar frame, an upper surface of the module frame, and the end plate.