Battery Cell Vent Isolation for Reliable Pressure Relief
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Solution Overview
Problem
The safety and service performance of batteries are compromised due to adhesive overflow affecting the actuation performance of pressure relief mechanisms during installation, leading to reduced functionality.
Innovation Solution
A battery design incorporating a pressure relief mechanism with an isolation component and protective component to prevent adhesive contact, ensuring the isolation component's protection and maintaining the mechanism's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is used to attach the attachment component to the battery cell wall, then the attachment strength is improved, but the adhesive may overflow and affect the actuation performance of the pressure relief mechanism
Solution Approach 1:
The attachment component is divided into multiple parts: the main attachment component for bonding, an isolation component to prevent adhesive overflow, and a protective component for additional protection. This segmentation allows each component to perform its specific function without interfering with others, solving the contradiction between strong attachment and pressure relief mechanism reliability
Solution Approach 2:
The isolation component acts as an intermediary between the attachment component and the pressure relief mechanism. It prevents direct contact between the adhesive and the pressure relief mechanism while still allowing the attachment component to maintain strong bonding to the battery cell wall, thus resolving the contradiction
2Reliability
If the isolation component is added to prevent adhesive contact, then the pressure relief mechanism reliability is improved, but the device complexity increases
Solution Approach 1:
The isolation component and protective component are integrated into a single assembly that combines multiple functions: adhesive barrier, mechanical protection, and structural support. This merging reduces the number of separate components needed while maintaining reliability, thus reducing device complexity
Solution Approach 2:
The protective component serves multiple functions simultaneously: it protects the isolation component from damage, provides additional barrier against adhesive overflow, and contributes to the overall structural integrity of the battery assembly. This multi-functionality reduces the need for separate components, thereby reducing device complexity
3Reliability
If the protective component is added to protect the isolation component, then the service performance is improved, but the device complexity increases
Solution Approach 1:
The protective component is installed beforehand to cushion and protect the isolation component from potential damage during assembly and operation. This prior protection prevents damage before it occurs, ensuring service performance without requiring complex damage detection or repair mechanisms
Data Source
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Figure 3
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AI summary
Embodiments of the present application provide a battery, an electrical device, and an energy storage device, which can improve the service performance of the battery. The battery includes: a battery cell, a first wall of the battery cell being provided with a pressure relief mechanism; an attachment component, a first surface of the attachment component being attached to the first wall by an adhesive; an isolation component connected to the attachment component and configured to prevent the adhesive from being applied between the attachment component and the pressure relief mechanism; and a protective component connected to a surface of the isolation component facing away from the pressure relief mechanism to protect the isolation component; where the attachment component is provided with a first through hole corresponding to the position of the pressure relief mechanism.