Cylindrical Battery Cell Venting Layout for Isolated Emission Collection
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Solution Overview
Problem
Existing battery technologies face challenges in ensuring safety, particularly in preventing explosions and thermal diffusion due to inadequate pressure relief mechanisms and directional emission strategies.
Innovation Solution
The battery design incorporates a pressure relief mechanism on the cylindrical side surface of each battery cell, which is actuated when internal pressure or temperature reaches a threshold, directing emissions into a collection chamber isolated from the electrical chamber, thereby preventing contact with high-voltage components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressure relief mechanism is actuated to release emissions, then the internal pressure is relieved, but the emissions may contact high-voltage components causing explosion risk
Solution Approach 1:
The battery structure is segmented into two separate chambers: an electrical chamber for housing battery cells and a collection chamber for receiving emissions. The isolation component divides these chambers, ensuring that when the pressure relief mechanism actuates, emissions are directed into the collection chamber and cannot contact high-voltage components in the electrical chamber, thus resolving the explosion risk while maintaining pressure relief functionality
Solution Approach 2:
The isolation component acts as an intermediary barrier between the electrical chamber and collection chamber. It includes a first region that accommodates the battery cell portion and a second region that seals the collection chamber, serving as a mediator that allows pressure relief while preventing harmful emissions from reaching electrical components
2Volume of stationary object
If the battery cell is fully accommodated in the electrical chamber, then the electrical chamber is compact, but the pressure relief mechanism cannot direct emissions outward
Solution Approach 1:
The battery cell is partially nested within the isolation component's first region, which protrudes into the collection chamber. This nested arrangement allows the battery cell to be accommodated while enabling the pressure relief mechanism to discharge emissions outward into the collection chamber, achieving both compact electrical chamber volume and effective emission directionality
3Productivity
If the first region protrudes into the collection chamber to accommodate the battery cell, then space utilization is improved, but the collection chamber volume is reduced
Solution Approach 1:
The isolation component features localized quality differentiation: the first region protrudes into the collection chamber to accommodate the battery cell portion and enable emission directionality, while the second region maintains sufficient volume for collecting emissions. This local quality approach optimizes space utilization in critical areas while preserving adequate collection chamber capacity
Data Source
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AI summary
Embodiments of the present application provide a battery, a power consuming apparatus, and a method and apparatus for manufacturing the battery. The battery includes: a plurality of cylindrical battery cells, a cylindrical side surface of the battery cell being provided with a pressure relief mechanism; an electrical chamber configured to accommodate the plurality of battery cells; a collection chamber configured to collect emissions from the battery cell when the pressure relief mechanism is actuated; and an isolation component configured to isolate the electrical chamber from the collection chamber, wherein the isolation component includes a first region and a second region, the first region is used for accommodating a first portion of the battery cell such that the first portion protrudes, towards the collection chamber, from a surface of the second region facing towards the collection chamber, and the pressure relief mechanism is disposed in a region of the cylindrical side surface located in the first portion such that the emissions are allowed to enter the collection chamber when the pressure relief mechanism is actuated. The battery, power consuming apparatus, and method and apparatus for manufacturing the battery of the embodiments of the present application can improve battery safety.