Vehicle Battery Cooling Plate With Reinforced Distributor
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Solution Overview
Problem
Existing cooling devices for vehicle batteries lack robustness, particularly in regions with refrigerant connections, where movements and forces can cause stress, leading to potential instability and leakage.
Innovation Solution
A cooling device with a cooling plate design featuring a first plate part with increased wall thickness and a second plate part with depressions forming refrigerant ducts, along with reinforced distributor and collector portions, which provide a stable chamber structure to manage flow and reduce stress on connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the distributor portion and collector portion are formed from the second plate part alone, then the device complexity is reduced, but the strength and stability in connection regions deteriorate due to insufficient wall thickness
Solution Approach 1:
The cooling plate features variable wall thickness with localized reinforcement: the first plate part has increased wall thickness (5-10mm) specifically in the distributor and collector portions where connections are located, while the second plate part maintains standard thickness (2-5mm) in refrigerant duct regions. This local quality differentiation strengthens connection regions without unnecessarily increasing overall device complexity.
Solution Approach 2:
The cooling plate functions as a composite structure combining two plate parts with different thickness characteristics. The first plate part provides structural reinforcement at critical connection zones, while the second plate part forms the refrigerant duct network. This composite approach optimizes both strength and complexity by assigning different thickness requirements to different functional zones.
2Reliability
If the wall thickness of the distributor portion and collector portion is increased, then the stability and reliability improve, but the manufacturing cost and material usage increase
Solution Approach 1:
Instead of uniformly increasing wall thickness throughout the entire cooling plate, the invention applies localized thickening only to the distributor and collector portions where connections are situated. The refrigerant duct regions maintain standard thickness, thereby achieving enhanced reliability at connection points while minimizing additional material consumption.
Solution Approach 2:
The invention changes the wall thickness parameter spatially across different regions of the cooling plate. The first plate part exhibits parameter variation with thickness ranging from 5-10mm at connection zones to potentially thinner sections elsewhere, while the second plate part maintains consistent 2-5mm thickness. This parameter optimization balances reliability improvement with material efficiency.
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
The design enhances stability and reduces the risk of leakage by distributing load effectively and maintaining uniform low temperatures across the cooling plate, ensuring robustness and efficient heat dissipation.
Implementation Method 1
The cooling plates are installed, as far as possible without a gap, on the outer side of the batteries for the purpose of dissipating heat
Implementation Method 2
cooling liquid flows through the refrigerant ducts
Data Source
Figure 1~3
Figure 4~5
Figure 6~7
AI summary
A cooling device for a vehicle battery is provided with a cooling plate (22) comprising a first plate part (24) which faces towards the battery (10) and has a first wall thickness (d1), comprising a second plate part (30) which has a second wall thickness (d2), and comprising a multiplicity of depressions (32) formed in the second plate part (30). The cooling plate (22) has a multiplicity of refrigerant ducts (34) with a first duct cross section, said refrigerant ducts being formed between the first and second plate parts (24, 30) in the depressions (32) of the second plate part (30). The cooling plate (22) has a distributor portion (42) and a collector portion which each have at least one connection (46) for a refrigerant feed line (56) and a refrigerant return line. The wall thickness (D) of the cooling plate (22) in the distributor portion (42) and/or collector portion (44) is greater than the wall thickness (d2) of the second plate part (30).