Battery Module Thermal Insulation via Alternating Partition Walls
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Solution Overview
Problem
Conventional battery modules face the challenge of sequential thermal harm extension when one battery abnormally generates heat, leading to thermal damage to adjacent batteries and surrounding equipment due to heat transfer.
Innovation Solution
Incorporating a low thermal-conductive member with alternately arrayed first and second partition walls between side walls in the battery holder to hinder heat transfer between batteries, preventing direct contact with side walls and reducing heat transmission to adjacent batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If batteries are arranged closely in the battery holder to increase energy density, then productivity and space utilization are improved, but heat transfer between adjacent batteries increases, worsening thermal safety
Solution Approach 1:
A low thermal-conductive member is introduced as an intermediary substance between adjacent batteries in the battery holder. This member includes partition walls that physically separate the batteries while having low thermal conductivity, thereby reducing heat transfer between batteries while maintaining close arrangement for high energy density
Solution Approach 2:
The battery holder structure is modified by adding localized partition walls at specific positions between adjacent batteries. These partition walls create local thermal barriers without affecting the overall compact arrangement, allowing different regions of the battery holder to have different thermal insulation properties
2Reliability
If thermal insulation measures are added between batteries to prevent heat transfer, then thermal safety is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The low thermal-conductive member serves multiple functions simultaneously: it acts as a thermal barrier to reduce heat transfer, provides structural support between batteries, and maintains the organized arrangement of battery cells. This multi-functionality reduces the need for additional separate components
Solution Approach 2:
The low thermal-conductive member is made from composite materials that combine low thermal conductivity with adequate mechanical strength. This allows the partition walls to provide effective thermal insulation while maintaining structural integrity and ease of manufacturing
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
Effectively reduces the impact of abnormal heat generation on neighboring batteries, preventing chain reactions and thermal damage while maintaining efficient battery incorporation.
Implementation Method 1
a low thermal-conductive member disposed between the side walls. The low thermal-conductive member is lower in thermal conductivity than the side walls
Data Source
AI summary
A Battery module includes a plurality of cylindrical batteries and battery a holder holding the cylindrical batteries arranged in at least one row. The battery holder includes a first side wall part, a second side wall part, and a low thermal-conductive member disposed between the side wall parts. The low thermal-conductive member includes a first partition walls interposed between respective the cylindrical batteries and the first side wall part, and the second partition walls interposed between the respective cylindrical batteries and the second side wall part. The first and the second partition walls are alternately arrayed along the row.