Stator End-Face Coolant Deflection for Connection Device Cooling
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Solution Overview
Problem
Existing electric machine stator cooling systems are inefficient in targeting heat absorption from high-power electric machines, particularly in motor vehicles, leading to potential overheating during dynamic operations like uphill driving.
Innovation Solution
A stator arrangement with a cooling fluid conducting element that protrudes from the stator's end face, deflecting coolant radially onto the stator connection device, ensuring targeted cooling of both the stator connection device and laminated stator core, utilizing an annular segment configuration to trap and direct coolant effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cooling fluid is directed to cool the stator connection device, then cooling efficiency improves, but the cooling fluid flow path becomes complex
Solution Approach 1:
The cooling fluid conducting element utilizes the kinetic energy and flow direction of the cooling fluid itself to achieve deflection and redirection. The element's geometry, including its protrusion shape and deflection regions, works with the natural flow characteristics of the cooling fluid to direct it onto the stator connection device without requiring additional active control mechanisms or complex external systems.
2Ease of operation
If the cooling fluid conducting element protrudes axially from the end face, then cooling fluid can be trapped and directed, but the device structure becomes more complex
Solution Approach 1:
The cooling fluid conducting element is integrated with the stator assembly, combining the functions of cooling fluid distribution and structural support. The element protrudes axially from the end face and merges with the stator connection device region, creating a unified structure that performs both mechanical and thermal management functions without requiring separate independent components.
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 provides efficient cooling of the stator connection device and rotor, preventing overheating and enabling high-power, dynamic operation of electric machines by ensuring targeted and extensive coolant distribution, particularly in high-power electric machines.
Implementation Method 1
the cooling fluid can absorb heat from the stator... the cooling fluid can flow around the stator connection device in order to cool the stator connection device
Implementation Method 2
Cooling fluid flowing along the end face of the stator can be trapped by means of the cooling fluid conducting element... the cooling fluid conducting element is therefore designed to trap cooling fluid flowing along the end face of the stator
Data Source
AI summary
A stator arrangement of a stator of an electric machine, includes a cooling-fluid conducting element on the stator, wherein the cooling-fluid conducting element is arranged on an end face of the stator, and protrudes at least regionally from the end face of the stator in the axial direction of the stator, with the result that, by the cooling-fluid conducting element, cooling fluid flowing along the end face of the stator can be collected, and has at least one deflection region which is designed to deflect the collected cooling fluid to a stator connection device of the stator, with the result that, for cooling the stator connection device, the cooling fluid can flow around the stator connection device.