Battery Pack Fireproof Component Frame to Prevent Bolt Cracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery packs face safety issues due to potential crushing and cracking of fireproof components when fastened with bolts, which can lead to thermal runaway, fires, or explosions during high-pressure gas generation.
Innovation Solution
A fireproof component with a separate frame and main body, where the frame is connected to the battery module using screws, avoiding direct fixation of the main body, and featuring a modular design with replaceable connecting pieces to prevent damage and enhance safety and production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fireproof component is fastened to the battery pack by bolts, then the connection between the fireproof component and the battery pack is secured, but the fireproof component is prone to crushing and cracking under the locking effect of the bolts
Solution Approach 1:
The fireproof component is divided into two independent parts: a frame and a main body. The frame is fastened to the battery pack by bolts, while the main body is positioned within the frame without direct fastening. This segmentation allows the frame to bear the mechanical fastening loads without transmitting crushing forces to the main body, thus preventing cracking while maintaining connection security.
Solution Approach 2:
The frame acts as an intermediary structure between the fastening system and the main body. The bolts fasten to the frame rather than directly to the main body, and the frame in turn supports and protects the main body. This intermediary structure isolates the main body from the direct mechanical stress of the locking effect, preventing damage while maintaining overall structural integrity.
2Reliability
If the main body is fixed to the battery module, then the fireproof component is securely attached, but the main body is prone to crushing and cracking under the locking effect
Solution Approach 1:
The fireproof component is segmented into a frame and a main body that are independently structured. The frame handles the fastening function while the main body remains unfixed within the frame, avoiding direct transmission of fastening forces that cause crushing and cracking.
Solution Approach 2:
The frame structure serves as a protective cushioning layer between the fastening system and the main body. By designing the frame to bear the mechanical loads beforehand, the main body is protected from the harmful crushing and cracking effects that would otherwise occur during assembly and operation.
3Device complexity
If the fireproof component uses an integrated design, then the structure is simple, but the production efficiency is reduced due to complex molding requirements
Solution Approach 1:
The fireproof component is divided into a frame and a main body that can be manufactured separately using different, simpler molding processes. This segmentation allows each part to be optimized for its specific manufacturing requirements, avoiding the need for complex integrated molding while maintaining overall structural simplicity. The separate parts are then assembled through the frame's opening, improving production efficiency.
Solution Approach 2:
By changing the structural parameters from an integrated monolithic design to a segmented design with an opening in the frame, the patent enables the use of different manufacturing parameters and processes for different parts. This allows each component to be manufactured using optimal, simpler processes rather than requiring a single complex integrated molding process.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
This application provides a fireproof component, a battery pack, and a device using a battery as a power supply. The fireproof component includes a main body and a frame. The frame includes a body portion, an extension portion, and an opening. The body portion defines the opening. The extension portion is located circumferentially outside the body portion and connected to the body portion. The extension portion extends along a third direction and protrudes beyond the body portion. The main body covers the opening of the frame and is connected to the body portion. The main body and the frame of the fireproof component are parts independent of each other, and therefore, can be made of different materials and in different molding processes, thereby helping to shorten a total molding time of the fireproof component, improving production efficiency, and ensuring high structural strength of the frame of the fireproof component. Therefore, when the frame is fixedly connected to a battery module, the main body does not need to be fixed to the battery module, thereby avoiding problems such as crushing and cracking of the main body in a case of fixing the main body to the battery module, and improving safety and reliability of the battery pack.