Battery Pack Insulation Structure With Liquid Cooling Between Cells
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Solution Overview
Problem
In battery packs, the close proximity of batteries leads to rapid heat transfer and increased risk of thermal runaway due to insufficient heat insulation and cooling, making it challenging to manage temperature effectively.
Innovation Solution
A battery pack design incorporating an insulating support with a heat insulating portion between adjacent batteries, combined with a liquid cooling tube in indirect contact with the battery periphery, enhances heat insulation and cooling efficiency while reducing the risk of thermal runaway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the distance between adjacent batteries is reduced to increase energy density, then the productivity and space utilization are improved, but the heat transfer becomes faster and the risk of thermal runaway increases
Solution Approach 1:
The patent introduces heat insulating portions that divide the battery pack into segmented thermal zones. These insulating portions are positioned between adjacent batteries to segment heat transfer paths, allowing batteries to be closely spaced while preventing thermal runaway propagation. This segmentation enables high energy density without sacrificing thermal safety.
Solution Approach 2:
The heat insulating portions act as intermediary elements between adjacent batteries. These intermediaries block direct heat transfer while allowing the batteries to maintain close proximity for high energy density. The liquid cooling tubes also serve as intermediaries that actively manage heat transfer from battery surfaces.
2Reliability
If heat insulating portions are added between batteries to prevent thermal runaway, then the safety is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple functions into the heat insulating portions and liquid cooling tubes. The heat insulating portions simultaneously provide thermal insulation, structural support, and positioning for the liquid cooling tubes. This merging reduces the number of separate components needed, thereby reducing overall device complexity while maintaining thermal safety.
Solution Approach 2:
The heat insulating portions are designed as multi-functional components that perform thermal insulation, mechanical support, and fluid channel positioning. The liquid cooling tubes simultaneously cool batteries and serve as structural elements. This multi-functionality reduces the number of separate components, simplifying the overall device structure while ensuring thermal safety.
3Temperature
If liquid cooling tubes are used for cooling batteries, then the temperature control is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The liquid cooling tubes are designed to be self-positioning within the heat insulating portions. The heat insulating portions contain built-in positioning structures that automatically guide and secure the cooling tubes during assembly, eliminating the need for complex external positioning mechanisms. This self-service approach simplifies manufacturing while maintaining effective temperature control.
Solution Approach 2:
The heat insulating portions serve as intermediaries that simplify the connection between liquid cooling tubes and batteries. Instead of directly connecting complex cooling systems to each battery, the heat insulating portions with integrated cooling channels provide a simplified intermediary structure that facilitates easy assembly and manufacturing while maintaining effective cooling.
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 improves heat insulation and cooling efficiency, reducing the risk of thermal runaway and enhancing energy density by optimizing the placement and structure of heat insulating and cooling components within the battery pack.
Implementation Method 1
The heat insulating portion is located between adjacent two of the batteries
Implementation Method 2
At least a part of the outer periphery of each battery exposed to an outside of the heat insulating portion is in contact with the liquid cooling tube
Data Source
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AI summary
A battery pack includes an insulating support (100), a liquid cooling tube (200), and at least two batteries. The insulating support (100) includes a heat insulating portion (110). The heat insulating portion (110) is located between adjacent two of the batteries. At least a part of an outer periphery of each battery is accommodated in the heat insulating portion (110). At least a part of the outer periphery of each battery exposed to an outside of the heat insulating portion (110) is in contact with the liquid cooling tube (200).