Segmented Fluid Channel for Battery Thermal Management
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Solution Overview
Problem
Existing energy storage systems in hybrid and electric vehicles face complex and costly production methods, and inefficient temperature control that is not needs-based, leading to suboptimal efficiency.
Innovation Solution
A fluid channel arrangement with two walls and spacers, where at least one wall is made from a thermoplastic material, allowing for separate and cost-effective production, enabling precise temperature control by directing a temperature control fluid to specific areas, such as hot spots, and providing electrical insulation between battery cells and the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling plates are used for temperature control, then cooling and heating function are achieved, but production cost and structural complexity increase
Solution Approach 1:
The cooling plate is divided into multiple independent channels, each capable of being controlled separately. This segmentation allows different regions to be cooled or heated independently based on local temperature requirements, reducing the need for complex overall control systems while maintaining effective temperature management across the entire battery pack.
Solution Approach 2:
Different channels within the cooling plate can be configured with different flow rates, temperatures, or even different fluids to address local thermal characteristics of battery cells. This local quality approach enables precise temperature control in specific areas without affecting the entire system, simplifying the overall control architecture.
2Temperature
If cooling plates are used for temperature control, then cooling and heating function are achieved, but production cost increases
Solution Approach 1:
The cooling plate is divided into multiple independent channels, each capable of being controlled separately. This segmentation allows different regions to be cooled or heated independently based on local temperature requirements, reducing the need for complex overall control systems while maintaining effective temperature management across the entire battery pack.
Solution Approach 2:
Different channels within the cooling plate can be configured with different flow rates, temperatures, or even different fluids to address local thermal characteristics of battery cells. This local quality approach enables precise temperature control in specific areas without affecting the entire system, simplifying the overall control architecture.
3Ease of operation
If uniform cooling is applied to all battery cells, then simple control is achieved, but efficiency decreases due to not addressing local hot spots
Solution Approach 1:
The cooling plate is divided into multiple independent channels, each capable of being controlled separately. This segmentation allows different regions to be cooled or heated independently based on local temperature requirements, reducing the need for complex overall control systems while maintaining effective temperature management across the entire battery pack.
Solution Approach 2:
Different channels within the cooling plate can be configured with different flow rates, temperatures, or even different fluids to address local thermal characteristics of battery cells. This local quality approach enables precise temperature control in specific areas without affecting the entire system, simplifying the overall control architecture.
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 solution allows for a more efficient and cost-effective temperature control of battery cells, optimizing cooling and increasing the overall efficiency of the energy storage system by enabling needs-based, locally targeted cooling.
Implementation Method 1
a fluid channel is arranged between the housing and the at least one battery cell for controlling the temperature of the battery cell... cooling plates which are flowed through by fluid are used for this
Implementation Method 2
cooling plates which are flowed through by fluid are used for this, which additionally have a heating function
Implementation Method 3
at least one wall is made from a thermoplastic material... providing electrical insulation between battery cells and the housing
Data Source
AI summary
An energy store of a motor vehicle may include at least one battery cell and a fluid channel having a temperature control fluid that may control a temperature of the at least one battery cell. The fluid channel may be defined by a fluid channel arrangement having two walls and a plurality of spacers arranged therebetween. The plurality of spacers may be configured for a needs-based temperature control of the at least one battery cell. The plurality of spacers may be arranged so that a coolant flow is conducted directly to a hot spot of the at least one battery cell. At least one of the two walls may comprise an organic sheet and may be connected, via glue or welding, to the plurality of spacers.