Battery End Cover Vent Layout for Larger Pressure Relief
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Solution Overview
Problem
The arrangement of the pressure relief mechanism in battery technology is not optimized, limiting the size of the mechanism and its effectiveness in relieving internal pressure, which is crucial for safety.
Innovation Solution
The pressure relief mechanism is positioned between the first and second electrode terminals on the end cover, utilizing the space effectively and allowing for a larger-sized mechanism, with projections covering parts of the mechanism to ensure smooth pressure relief.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressure relief mechanism is arranged in conventional positions on the end cover, then the arrangement is simple, but the size of the pressure relief mechanism is limited and pressure relief effectiveness is reduced
Solution Approach 1:
The patent positions the pressure relief mechanism between the first and second electrode terminals in the planar dimension of the end cover, rather than using conventional peripheral positions. This dimensional repositioning allows the mechanism to utilize the central space between terminals, effectively increasing its size and pressure relief capability without adding vertical or external complexity to the battery structure.
Solution Approach 2:
The patent creates a localized optimal arrangement by positioning the pressure relief mechanism specifically between the electrode terminals where space is otherwise underutilized. This local optimization allows the mechanism to achieve larger size and better effectiveness in a specific region without affecting the overall simplicity of the battery design.
2Reliability
If the pressure relief mechanism is made larger to improve pressure relief capability, then pressure relief effectiveness increases, but the available space on the end cover is insufficient
Solution Approach 1:
The patent transitions from conventional peripheral positioning to central positioning between electrode terminals, effectively utilizing the previously underused planar space between terminals. This dimensional repositioning allows a larger pressure relief mechanism to fit within the available end cover area.
Solution Approach 2:
The pressure relief mechanism is nested within the space between the first and second electrode terminals, utilizing the existing structural arrangement of terminals to accommodate a larger mechanism without requiring additional external space on the end cover.
3Reliability
If the pressure relief mechanism is positioned to maximize size, then pressure relief effectiveness improves, but the arrangement of electrode terminals and connecting members becomes more complex
Solution Approach 1:
The space between the electrode terminals serves dual purposes: it accommodates the connecting members for electrical connection and simultaneously provides optimal positioning space for the pressure relief mechanism. This multi-functional utilization of the same spatial region allows the pressure relief mechanism to be larger without requiring additional dedicated space or complicating the overall component layout.
Data Source
AI summary
Provided are an end cover assembly, a battery, an electric device, a battery cell, and a manufacturing method thereof, pertaining to the technical field of batteries. The end cover assembly includes an end cover, a first electrode terminal, a second electrode terminal, a connecting member, and a pressure relief mechanism. The first electrode terminal is installed on the end cover; and the second electrode terminal is installed on the end cover. The connecting member is configured to be connected to the first electrode terminal and the second electrode terminal, where the connecting member is on a side of the end cover farther away from inside of the battery cell in a first direction. The pressure relief mechanism is disposed on the end cover, the pressure relief mechanism is at least partially located between the first electrode terminal and the second electrode terminal.