Battery Module Fire-Extinguishing Channel for Compact Pack Safety
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Solution Overview
Problem
Existing battery modules face challenges in compactness, ease of assembly, and effective fire extinguishing due to external fire extinguishing pipes being prone to damage and cumbersome independent storage of fire extinguishing agents.
Innovation Solution
A battery module design featuring a fire extinguishing channel formed by interconnected slots on battery cell frames, where a fire extinguishing member is integrated within the channel, allowing for compact structure, easy assembly, and high fire extinguishing efficiency by covering the entire battery cell assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fire extinguishing pipes are suspended outside the battery housing, then fire extinguishing function is achieved, but the pipe lacks protection and is prone to compression and damage
Solution Approach 1:
The fire extinguishing member is nested inside the battery housing structure, specifically integrated within the cell holder assembly. This nested configuration provides inherent protection to the fire extinguishing member while avoiding the need for additional external protective structures, thereby resolving the contradiction between reliability and device complexity.
2Reliability
If fire extinguishing pipes are suspended outside the battery housing, then fire extinguishing function is achieved, but additional space is required, increasing the external size of the battery module
Solution Approach 1:
The fire extinguishing member is merged with the battery housing structure, specifically integrated into the cell holder assembly. This merging eliminates the need for separate external fire extinguishing pipes, thereby maintaining fire extinguishing function while reducing the overall battery module size and improving space utilization.
3Reliability
If fire extinguishing agents are stored separately in each storage space, then fire extinguishing coverage is ensured, but the structure becomes cumbersome and difficult to operate
Solution Approach 1:
The fire extinguishing system is segmented into multiple fire extinguishing members, each positioned in different cell holders within the battery assembly. This segmentation ensures comprehensive fire extinguishing coverage across different battery cell regions while maintaining a simple integrated structure that is easy to assemble and operate.
Solution Approach 2:
Multiple fire extinguishing members are nested within the integrated cell holder structure at different positions. This nested arrangement ensures each position has fire extinguishing capability while the overall structure remains unified and easy to assemble, resolving the contradiction between coverage and ease of operation.
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 enhances structural compactness, protects the fire extinguishing member from damage, and improves assembly efficiency while ensuring high fire extinguishing efficiency by allowing the fire extinguishing member to respond timely and effectively across the entire battery cell assembly.
Implementation Method 1
when a temperature of the fire extinguishing member reaches its melting point, the fire extinguishing member bursts so as to release the first fire extinguishing material inside the fire extinguishing member
Data Source
AI summary
A battery module includes a battery cell assembly and a fire extinguishing member. The battery cell assembly includes a plurality of battery cell frames and a plurality of battery cells. The plurality of the battery cell frames are arranged sequentially along a length direction of the battery module. At least one battery cell is provided in at least some of the battery cell frames. Each battery cell frame is provided with a fire extinguishing slot, and the fire extinguishing slots on the plurality of the battery cell frames are communicated to each other to form a fire extinguishing channel. The fire extinguishing member is arranged in the fire extinguishing channel. The fire extinguishing channel extends along the length direction of the battery module, and the fire extinguishing member extends along the length direction of the battery module in the fire extinguishing channel.