Battery Rack Heat Dissipation via Intermediary L Brackets
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Solution Overview
Problem
Existing energy storage systems face safety issues due to thermal runaway caused by abnormal heat generation in some battery modules, leading to heat concentration and potential large-scale ignition or explosion in adjacent modules.
Innovation Solution
The energy storage system incorporates a structure with paired rack frames, L brackets, and heat transfer members, including graphite sheets and thermal interface materials, to evenly distribute heat across multiple layers of battery modules, preventing heat concentration and facilitating efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a cooling system is installed to prevent temperature increase during long-term use, then the lifespan of battery modules is extended, but abnormal heat generation in some modules can still occur and concentrate in adjacent modules causing thermal runaway
Solution Approach 1:
Heat transfer members (graphite sheets and thermal interface materials) are introduced as intermediary components between battery modules and L brackets to mediate heat flow. These intermediaries conduct heat away from abnormal modules through the L brackets to adjacent normal modules, preventing heat concentration and thermal runaway while maintaining the cooling system's lifespan-extending function
Solution Approach 2:
The system uses the thermal energy from abnormal battery modules themselves to cool them down by transferring heat to adjacent normal modules through the L brackets and heat transfer members. The adjacent normal modules act as heat sinks, allowing the abnormal modules to self-regulate temperature without external intervention
2Productivity
If battery modules are arranged closely in a rack to maximize space utilization, then productivity is improved, but heat from abnormal modules rapidly propagates to adjacent modules causing large-scale ignition or explosion
Solution Approach 1:
L brackets serve as intermediary heat dissipation structures positioned between adjacent battery modules. When modules are arranged closely for high density, the L brackets intercept heat flow from abnormal modules and conduct it away through heat transfer members, preventing direct heat propagation to adjacent modules while maintaining close spacing for productivity
Solution Approach 2:
The battery rack is segmented into multiple independent support sections using L brackets. Each L bracket creates a localized heat management zone that can independently dissipate heat from abnormal modules, preventing uncontrolled heat propagation across the entire rack structure
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
This configuration effectively prevents heat from concentrating in adjacent battery modules during thermal runaway events, reducing the risk of ignition and explosion, and ensures safer operation by distributing heat efficiently across multiple layers.
Implementation Method 1
a first heat transfer member interposed between each of the plurality of battery modules and each of the plurality of L brackets
Implementation Method 2
a second heat transfer member interposed between the rack frame and each of the plurality of L brackets
Data Source
AI summary
An energy storage system includes a pair of rack frames spaced apart from each other and arranged side by side; a plurality of L brackets fastened to the rack frames; a plurality of battery modules respectively placed on a pair of L brackets facing each other to form a plurality of layers along a longitudinal direction of the rack frame; a first heat transfer member interposed between the battery module and the L bracket; and a second heat transfer member interposed between the rack frame and the L bracket.