Battery Cell Isolation Structure for Unblocked Pressure Relief
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing design of attaching battery cells to attachment components using adhesives can inadvertently block or partially block the pressure relief mechanism, affecting its ability to relieve internal pressure and temperature during thermal runaway.
Innovation Solution
The introduction of an isolation component with protrusions that surround the actuation region of the pressure relief mechanism, preventing adhesive from entering and ensuring the mechanism can function correctly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is applied to attach battery cell to attachment component, then bonding strength is improved, but pressure relief mechanism may be blocked
Solution Approach 1:
The attachment component is segmented into multiple regions: a bonding region for adhesive application and a pressure relief region that remains adhesive-free. This segmentation allows the bonding surface to be sufficiently large for strong attachment while ensuring the pressure relief mechanism remains unblocked by adhesive
Solution Approach 2:
Different regions of the attachment component have different properties: the bonding region has high adhesive affinity for strong bonding, while the pressure relief region has adhesive-blocking features (protrusions or reduced surface area) to prevent adhesive accumulation and ensure mechanism functionality
2Strength
If bonding surface area is increased to improve attachment, then bonding strength is improved, but adhesive may enter pressure relief mechanism
Solution Approach 1:
The bonding surface is segmented into multiple bonding regions distributed around the pressure relief mechanism rather than forming a continuous large surface. This allows adequate bonding area while creating natural barriers that prevent adhesive from reaching the pressure relief mechanism
Solution Approach 2:
Protrusions or structural features on the attachment component act as intermediaries between the bonding surface and the pressure relief mechanism. These features intercept adhesive before it can reach the pressure relief mechanism, allowing both strong bonding and unblocked pressure relief
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present application discloses a battery and a related apparatus, production method and production device therefor. The battery includes: a battery cell, the battery cell including a pressure relief mechanism configured to be capable of being actuated when an internal pressure or temperature of the battery cell reaches a threshold, to relieve the internal pressure; an attachment component adapted to be attached to the battery cell by an adhesive; and an isolation component configured to be capable of preventing the adhesive from being applied between the attachment component and the pressure relief mechanism. By providing the isolation component, it is possible to prevent the adhesive from being applied between the attachment component and the pressure relief mechanism in an effective manner in a process of battery production. Meanwhile, application efficiency and accuracy of the adhesive could be improved, thereby improving production efficiency of the battery.