Layered Battery Thermal Barriers for Runaway Isolation
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Solution Overview
Problem
The safety performance of batteries is compromised due to the risk of thermal runaway, where high-temperature and high-pressure substances from a pressure relief mechanism can directly impact adjacent battery cells, causing further thermal runaway issues.
Innovation Solution
A battery design featuring multiple layers of battery cell groups with thermal management components connected between them to isolate adjacent layers, preventing the direct contact of high-temperature and high-pressure substances and enhancing safety by blocking these substances and improving production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thermal management components are used to isolate adjacent battery cell layers, then safety performance is improved by blocking high-temperature and high-pressure substances, but device complexity increases due to the additional components and their connections
Solution Approach 1:
The battery pack is divided into multiple layers of battery cell groups with thermal management components positioned between adjacent layers. Each thermal management component acts as an independent segmentation unit that blocks high-temperature and high-pressure substances, preventing thermal runaway propagation while maintaining modular structure
Solution Approach 2:
Thermal management components serve as intermediary elements positioned between adjacent battery cell layers. These components contain fluid and provide thermal isolation, acting as a mediator that prevents direct contact between high-temperature substances from one layer and battery cells in adjacent layers
2Productivity
If multiple thermal management components are connected to form a whole, then productivity is improved by reducing production difficulty, but device complexity increases due to the need for connecting portions
Solution Approach 1:
Multiple thermal management components are connected through connecting portions to form an integrated thermal management system. This merging approach reduces the number of independent components, simplifies assembly processes, and improves production efficiency while maintaining the isolation function between battery layers
3Ease of operation
If the thickness of connecting portion is reduced to create a gap, then ease of operation is improved by avoiding insulation layer destruction, but reliability may be affected by the reduced connection strength
Solution Approach 1:
The connecting portion features localized thinning at specific regions to create gaps that avoid the connection position between end cover and side wall of battery cells. This local quality change prevents destruction of the insulating layer during assembly while maintaining sufficient connection reliability through the overall structure of the connecting portion
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
The solution effectively prevents further thermal runaway by blocking high-temperature and high-pressure substances, ensuring the safety performance of the battery and improving production efficiency by reducing the complexity of individual thermal management components.
Implementation Method 1
the thermal management component is configured to contain a fluid to adjust temperature of the battery cells located on both sides of the thermal management component
Data Source
AI summary
A battery, a power consumption apparatus, a method and an apparatus for preparing a battery are provided. The battery includes a plurality of layers of battery cell groups stacked in a first direction. Each layer of the battery cell group includes a plurality of battery cells arranged in an array. A plurality of thermal management components are provided between adjacent two layers of the battery cell groups in the first direction. The thermal management component is configured to contain a fluid to adjust temperature of the battery cells located on both sides of the thermal management component. The plurality of the thermal management components are connected to each other in a second direction to isolate the adjacent two layers of the battery cell groups. The second direction is perpendicular to the first direction.