Battery Venting Structure With Emission Collection Chambers
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Solution Overview
Problem
Conventional battery designs face challenges in safely managing pressure relief emissions, as they often require additional space for actuation and can lead to environmental pollution and safety hazards due to uncontrolled discharge during thermal runaway.
Innovation Solution
A battery design incorporating a thermal management component with an avoidance chamber and collection chamber, allowing the pressure relief mechanism to actuate without needing space on the electrode terminal, and enabling emissions to be collected and directed away from external components and the environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure relief mechanism is added to the battery cell, then safety is improved by relieving internal pressure, but device complexity increases and additional space is required for actuation
Solution Approach 1:
The pressure relief mechanism is integrated into the existing battery cell structure, combining the safety function with the cell housing rather than adding a completely separate component. This reduces overall device complexity while maintaining the pressure relief capability.
Solution Approach 2:
The battery cell housing serves multiple functions: it contains the electrochemical components, provides structural support, and incorporates the pressure relief mechanism. This multi-functionality reduces the need for additional dedicated safety components, thereby reducing device complexity.
2Reliability
If a pressure relief mechanism is added to the battery cell, then safety is improved by relieving internal pressure, but the space required for actuation increases
Solution Approach 1:
The pressure relief mechanism is merged with the battery cell housing structure, utilizing the existing cell volume rather than requiring additional external space. The relief mechanism is positioned within the cell's existing structural framework.
Solution Approach 2:
The pressure relief mechanism utilizes the vertical dimension and existing structural layers of the battery cell rather than requiring additional horizontal space. The design leverages the cell's layered construction to accommodate the relief mechanism within the existing volume envelope.
3Reliability
If emissions are discharged directly to the environment, then pressure relief is achieved, but environmental pollution and safety hazards occur
Solution Approach 1:
A directed discharge path is introduced as an intermediary between the pressure relief mechanism and the external environment. This controlled pathway directs emissions away from sensitive areas and the general environment, reducing pollution and safety hazards while maintaining effective pressure relief.
Solution Approach 2:
The harmful emissions are converted from an uncontrolled environmental hazard into a controlled discharge process. By directing the emissions through a specific pathway away from sensitive areas, the harmful effect is mitigated while the pressure relief function is maintained.
4Quantity of substance
If the battery structure is made more compact, then energy density is improved, but space for safety mechanisms is reduced
Solution Approach 1:
The safety mechanisms are merged with the structural components of the battery cell, eliminating the need for separate dedicated safety spaces. The pressure relief mechanism is integrated into the cell housing, and the directed discharge path utilizes existing structural features, allowing compact design without compromising safety.
Solution Approach 2:
Structural components serve multiple functions: the cell housing provides both mechanical support and incorporates the pressure relief mechanism, while the directed discharge path utilizes existing structural features for emission management. This multi-functionality allows compact design while maintaining adequate space for safety mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances safety by containing and directing emissions, reducing the risk of pollution and external damage, while allowing for a more compact battery structure and improved performance.
Implementation Method 1
the thermal management component being configured to accommodate a fluid to adjust a temperature of the battery cell
Implementation Method 2
the pressure relief mechanism being configured to be actuated when an internal pressure or temperature of the battery cell reaches a threshold, to relieve the internal pressure
Data Source
Figure 1~2
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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, a thermal management component, an avoidance chamber and a collection chamber. The battery cell includes a pressure relief mechanism; the thermal management component is configured to accommodate a fluid to adjust a temperature of the battery cell; the avoidance chamber is configured to provide a space allowing the pressure relief mechanism to be actuated; and the collection chamber is configured to collect emissions from the battery cell when the pressure relief mechanism is actuated. The thermal management component is configured such that emissions of the battery cell are capable of passing through the thermal management component when the pressure relief mechanism is actuated, and then entering the collection chamber through the avoidance chamber. Due to provision of the avoidance chamber, the pressure relief mechanism may not need to be provided on a side of an electrode terminal of the battery cell; and provision of the collection chamber could allow emissions relieved by the pressure relief mechanism to be collected without being sprayed or flowing to the outside, thereby not causing pollution to other components or the external environment.