Battery Electrode Assembly Thermal Bridge for Compact Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Lithium batteries experience poor heat dissipation between adjacent electrode assemblies, leading to heat accumulation, reduced service life, and safety risks during high-power charging and discharging.
Innovation Solution
A battery design incorporating a housing with a heat conductive member that includes a base support part and a heat conductive part. The heat conductive member is positioned between the electrode assemblies and the housing, facilitating thermal conductivity and enhancing heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If a small gap is maintained between adjacent electrode assemblies to reduce battery size, then the battery volume is reduced, but heat dissipation performance deteriorates causing heat accumulation
Solution Approach 1:
A heat conductive member is introduced as an intermediary component between adjacent electrode assemblies. This member includes a heat conductive part that contacts the sidewalls of electrode assemblies and a base support part that contacts the base plate, creating a thermal bridge that facilitates heat transfer from the narrow gaps to the housing without requiring larger spacing between assemblies.
Solution Approach 2:
The heat dissipation function is extracted from the gap space between electrode assemblies and transferred to a dedicated heat conductive member. This allows the gap to remain small for compactness while the heat conductive member handles the thermal management function separately.
2Power
If continuous heat generation occurs during high-power charging and discharging, then power output is maintained, but heat accumulation increases reducing service life and safety
Solution Approach 1:
The heat generated during high-power operation, which is normally a harmful effect reducing reliability, is converted into a manageable thermal flow. The heat conductive member captures this heat and directs it to the housing, transforming the harmful heat accumulation into a controlled heat transfer process that maintains both power output and reliability.
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 accelerates heat dissipation from the electrode assemblies, prolongs the battery's service life, and improves safety performance by preventing heat accumulation.
Implementation Method 1
The heat conductive member includes a base support part and a heat conductive part connected together. The base support part is in thermally conductive contact with the base plate. The heat conductive part is in thermally conductive contact with sidewalls of the two adjacent electrode assemblies located at two opposite sides of the heat conductive part.
Data Source
AI summary
A battery, a battery module, and an electrical device are provided. The battery includes a housing, an electrode assembly group, and a heat conductive member. The housing includes a base plate and an accommodating cavity. The cell pack group is disposed inside the accommodating cavity and includes a plurality of electrode assemblies arranged in a first direction. The heat conductive member is disposed inside the accommodating cavity. The heat conductive member includes a base support part and a heat conductive part connected together. The base support part is in thermally conductive contact with the base plate. At least part of the base support part is disposed between adjacent two of the electrode assemblies. The heat conductive part is in thermally conductive contact with sidewalls of the two adjacent electrode assemblies located at two opposite sides of the heat conductive part.