Battery Pack Thermal Diffusion Structure Between Adjacent Modules
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Solution Overview
Problem
Heat generated from one battery module can rapidly increase the temperature of adjacent modules, leading to thermal runaway and safety risks in battery packs, particularly in electric vehicles.
Innovation Solution
A battery pack design incorporating insulating materials and thermally conductive sheets between modules, with heat dissipating portions contacting a case with high thermal capacity, to prevent heat transfer and propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If battery modules are arranged closely to increase energy density, then productivity and space utilization are improved, but heat accumulation occurs and thermal runaway risk increases
Solution Approach 1:
The patent introduces thermal diffusion prevention structures (insulating partitions) that divide the battery pack into separate thermal zones. These partitions segment the heat transfer path between adjacent battery modules, preventing heat from propagating across module boundaries while maintaining close physical arrangement for high energy density.
Solution Approach 2:
The patent employs thermal diffusion prevention structures as intermediary elements positioned between battery modules. These structures act as thermal barriers that mediate the thermal interaction between modules, blocking harmful heat transfer while allowing the modules to remain in close proximity for space efficiency.
2Reliability
If insulating materials are added between battery modules to prevent heat transfer, then thermal safety is improved, but device complexity increases
Solution Approach 1:
The thermal diffusion prevention structures are designed to perform multiple functions simultaneously: they provide thermal insulation to block heat transfer, maintains structural support between modules, and can serve as mounting surfaces for other components. This multi-functionality reduces the need for separate dedicated insulation components, thereby limiting complexity increase.
Solution Approach 2:
The patent utilizes composite material structures for the thermal diffusion prevention elements, combining insulating materials with structurally sound materials. This allows a single component to provide both thermal barrier properties and mechanical support, reducing the number of separate parts needed and simplifying the overall 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
Effectively prevents thermal runaway by blocking and dissipating heat, enhancing safety by delaying temperature increases and preventing explosions.
Implementation Method 1
a plurality of insulating materials arranged between two battery modules facing each other among the plurality of battery modules
Implementation Method 2
a thermally conductive sheet having one side arranged between the insulating materials and the other side provided to be in contact with the case
Data Source
AI summary
A battery pack includes: a plurality of battery modules including a plurality of battery cells and a housing accommodating the plurality of battery cells; a case accommodating the plurality of battery modules; a plurality of insulating materials arranged between two battery modules facing each other among the plurality of battery modules; and a thermally conductive sheet having one side positioned between the insulating materials and the other side in contact with the case.