Battery Holder PCM Cooling Structure for High-Density Packs
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Solution Overview
Problem
The integration of a heat storage material container in a battery pack leads to a decrease in volume energy density and increased size and weight, posing challenges in effectively cooling batteries without compromising these critical factors.
Innovation Solution
A battery pack design incorporating a heat absorbing portion that utilizes a phase change material, housed within a pool portion of a battery holder, to absorb heat without requiring additional volume or weight, utilizing a configuration that includes a top, bottom, and middle holder to securely hold the battery and maximize heat absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat storage material container is housed in the battery pack to cool the battery, then the battery cooling effect is improved, but the volume energy density of the battery pack decreases
Solution Approach 1:
The heat absorbing portion is integrated into the battery holder structure, merging the cooling function with the battery holding structure. This eliminates the need for a separate heat storage material container, thereby maintaining volume energy density while achieving battery cooling through phase change material absorption.
Solution Approach 2:
The battery holder is designed to serve multiple functions: it holds the battery in place and simultaneously houses the heat absorbing portion for thermal management. This multi-functional design eliminates the need for additional dedicated cooling components, preserving volume energy density.
2Temperature
If a heat storage material container is housed in the battery pack to cool the battery, then the battery cooling effect is improved, but the size of the battery pack increases
Solution Approach 1:
The heat absorbing portion is integrated into the battery holder structure, merging the cooling function with the battery holding structure. This eliminates the need for a separate heat storage material container, thereby maintaining volume energy density while achieving battery cooling through phase change material absorption.
3Temperature
If a heat storage material container is housed in the battery pack to cool the battery, then the battery cooling effect is improved, but the weight of the battery pack increases
Solution Approach 1:
The battery holder is designed to serve multiple functions: it holds the battery in place and simultaneously houses the heat absorbing portion for thermal management. This multi-functional design eliminates the need for additional dedicated cooling components, preserving weight efficiency.
4Temperature
If the heat absorbing portion is housed in the pool portion of the battery holder, then the battery cooling effect is improved without decreasing volume energy density, but the structure becomes more complex
Solution Approach 1:
The heat absorbing portion is integrated into the battery holder structure, merging the cooling function with the battery holding structure. This eliminates the need for a separate heat storage material container, thereby maintaining volume energy density while achieving battery cooling through phase change material absorption.
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 cools high-temperature batteries without decreasing volume energy density, maintaining pack size and weight, while enhancing impact resistance and safety by ensuring firm battery holding and preventing heat absorbing material from reaching electrode portions.
Implementation Method 1
the heat absorbing portion is configured to absorb heat by a phase change
Data Source
AI summary
A battery pack having a high temperature is effectively cooled. The battery pack includes an exterior case, a battery, a battery holder, and a heat absorbing portion. The heat absorbing portion is configured to absorb heat by a phase change. The battery holder includes a first battery holder that holds an electrode portion of the battery and a second battery holder that surrounds a body portion of the battery. The second battery holder includes a pool portion. The heat absorbing portion is housed in the pool portion.