Integrated Battery Module Venting and Liquid Cooling Layout
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Solution Overview
Problem
Existing battery pack designs face inefficiencies in installation time due to alignment requirements of liquid-cooling and pressure-relief components, and risk thermal damage at junctions from high-temperature gas and substances during thermal runaway.
Innovation Solution
A battery module with integrated liquid-cooling and smoke-exhaust/pressure-relief components, featuring specific thickness dimensions for supporting walls to prevent thermal shock and blockage, ensuring efficient heat dissipation and pressure relief.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If liquid-cooling plate and pressure-relief plate are separately arranged, then heat dissipation and pressure relief functions are independent, but installation time increases due to alignment requirements
Solution Approach 1:
The patent combines the liquid-cooling plate and pressure-relief plate into a single integrated component. The liquid-cooling channels and pressure-relief channels are formed within the same plate structure, eliminating the need for separate alignment and installation of two independent components. This merging resolves the contradiction by maintaining both heat dissipation and pressure relief functions while significantly reducing installation time and complexity.
2Productivity
If liquid-cooling plate and pressure-relief plate are integrally formed, then installation efficiency improves, but junction strength decreases due to thin wall thickness
Solution Approach 1:
The patent applies local quality by differentiating the wall thickness in different regions of the integrated plate. The pressure-relief channel walls are designed with thickness between 5-10mm to withstand thermal shock, while other regions maintain appropriate thickness for their specific functions. This localized variation in thickness resolves the contradiction by providing sufficient strength at critical junctions while maintaining overall integration and installation efficiency.
Solution Approach 2:
The patent changes the thickness parameter of the plate walls, specifically setting the pressure-relief channel wall thickness between 5-10mm. This parameter adjustment ensures that the junctions can withstand thermal shock from high-temperature gas during thermal runaway events, while still maintaining the benefits of integral formation for improved installation efficiency.
3Device complexity
If pressure-relief channel wall thickness is reduced, then device complexity decreases, but thermal shock resistance decreases
Solution Approach 1:
The patent optimizes the thickness parameter of the pressure-relief channel walls to be between 5-10mm. This parameter change ensures sufficient thermal shock resistance while avoiding excessive wall thickness that would increase device complexity and reduce pressure-relief channel flow capacity. The optimized thickness range resolves the contradiction by providing the minimum necessary strength against thermal shock without unnecessary structural complexity.
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
Enhances installation efficiency and reduces thermal risks, maintaining structural integrity and safety by optimizing component thickness and connection methods.
Implementation Method 1
The cell exchanges heat with the liquid-cooling partition
Implementation Method 2
liquid-cooling partition...vertically connected to the smoke-exhaust and pressure-relief portion
Implementation Method 3
The smoke-exhaust and pressure-relief portion is provided with a pressure-relief channel and an exhaust port in communication with the pressure-relief channel
Data Source
AI summary
A battery module and a battery pack employing the battery module are provided. The battery module includes a cell and a heat-dissipation and pressure-relief component. The heat-dissipation and pressure-relief component is provided with a liquid-cooling partition and a smoke-exhaust and pressure-relief portion. The smoke-exhaust and pressure-relief portion is provided with a pressure-relief channel and an exhaust port communicating with the pressure-relief channel. The liquid-cooling partition is arranged at one side of the pressure-relief channel and is vertically connected to the smoke-exhaust and pressure-relief portion. An explosion-proof valve of the cell is arranged corresponding to the exhaust port, and the cell exchanges heat with the liquid-cooling partition.