Battery Module Thermal Bridge Between Adjacent Electrode Assemblies
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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 adjacent electrode assemblies and in thermally conductive contact with the housing and electrode assembly sidewalls, facilitating rapid heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If electrode assemblies are arranged closely together to increase battery density, then space utilization is improved, but heat dissipation deteriorates
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 transfers heat to the base plate, serving as a thermal bridge to facilitate heat dissipation in the limited space between closely arranged electrode assemblies.
Solution Approach 2:
The heat dissipation function is extracted from the housing structure and implemented through a dedicated heat conductive member. This separate component specifically addresses thermal management between electrode assemblies without affecting the compact arrangement, allowing the housing to focus on mechanical support while the heat conductive member handles thermal transfer.
2Device complexity
If traditional housing structure without heat conductive member is used, then device complexity is reduced, but heat accumulation harmful effects increase
Solution Approach 1:
The heat conductive member serves multiple functions simultaneously: it provides structural support between electrode assemblies through its base support part, conducts heat away from critical areas through its heat conductive part, and prevents direct contact between electrode assemblies. This multi-functionality addresses thermal management needs without significantly increasing overall device complexity.
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 enhances 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. At least part of the base support part is disposed between two adjacent 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.
Data Source
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AI summary
A battery (1), a battery module (1000), and an electrical device are provided. The battery (1) includes a housing (10), an electrode assembly group (20), and a heat conductive member (30). The housing (10) includes a base plate (11) and an accommodating cavity (12). The electrode assembly group (20) includes a plurality of electrode assemblies (21) arranged in a first direction. The heat conductive member (30) includes a base support part (31) and a heat conductive part (32) connected together. The base support part (31) is in thermally conductive contact with the base plate (11). At least part of the base support part (31) is disposed between adjacent two of the electrode assemblies (21). The heat conductive part (32) is in thermally conductive contact with sidewalls of the two adjacent electrode assemblies (21) located at two opposite sides of the heat conductive part (32).