Dual-Impeller Coolant Pump Layout for Leak-Safe EV Thermal Circuits
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Solution Overview
Problem
Existing thermal management modules in vehicles face challenges due to decentralized component arrangement, leading to long connecting hoses and cables, increased assembly effort, high risk of leaks and short circuits, pressure and voltage losses, and corrosion, which affect reliability and require compact spatial adaptation.
Innovation Solution
A device with a pump system featuring two coaxially arranged impellers within a compact housing, each with independent drives, allowing separate fluid circuits to be operated independently, and a magnetic coupling through a fluidically impermeable structural wall to reduce leaks and short circuits, enabling efficient fluid handling and cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If decentralized component arrangement is used, then spatial flexibility is improved, but assembly complexity and risk of leaks increase
Solution Approach 1:
The patent combines multiple pump functions into a single integrated pump housing containing two impellers. This merging approach reduces the number of separate components and connecting hoses, thereby simplifying assembly while maintaining the ability to handle multiple fluid circuits independently. The integration directly addresses the technical contradiction by reducing assembly complexity without sacrificing spatial flexibility.
2Adaptability or versatility
If decentralized component arrangement is used, then spatial flexibility is improved, but reliability deteriorates due to high risk of leaks and short circuits
Solution Approach 1:
By integrating two impellers into a single pump housing with a common drive mechanism, the patent reduces the number of connecting hoses and electrical connections required. This merging eliminates potential leak points and short circuit risks associated with decentralized arrangements, thereby improving reliability while maintaining spatial flexibility through the compact dual-impeller design.
3Adaptability or versatility
If separate fluid circuits are operated independently, then operational flexibility is improved, but device complexity increases
Solution Approach 1:
The patent merges two pump functions into a single housing with a common drive shaft, allowing independent operation of two fluid circuits through shared mechanical components. This approach maintains operational flexibility by enabling independent control of each impeller while reducing device complexity compared to using two completely separate pump units.
Solution Approach 2:
The single pump housing serves multiple functions by accommodating two impellers that can operate independently to handle different fluid circuits. This multi-functionality approach allows the device to maintain operational flexibility for separate circuit control while avoiding the complexity of entirely separate pump systems.
4Volume of stationary object
If compact housing is used, then space saving is improved, but manufacturing precision requirements increase
Solution Approach 1:
The pump housing is segmented into distinct sections, each accommodating a specific impeller and its associated components. This segmentation allows for modular manufacturing and assembly, reducing the overall precision requirements for the compact housing while maintaining the space-saving benefits of integration.
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 solution allows for efficient and flexible operation of separate fluid circuits, reducing assembly complexity, minimizing leaks and short circuits, and enhancing reliability by enabling independent control of each pump, thus improving thermal management and reducing energy consumption.
Implementation Method 1
the pump device comprises a first impeller and a second impeller which are arranged coaxially to one another and are designed as a pump for conveying fluid by rotation
Implementation Method 2
A magnetic coupling through a fluidically impermeable structural wall to reduce leaks and short circuits
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
The invention relates to a device (100) for handling fluid within an at least partially electrically driven vehicle having a device (100) for handling fluid of an at least partially electrically driven vehicle, having a pump means (400) comprising a first impeller wheel (340A) and a second impeller wheel (340B), which are arranged coaxially with each other and are designed to convey fluid by rotation as a pump.