Stator Heat-Conducting Layers with Phase-Change Material
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Solution Overview
Problem
Existing motor stators face challenges in achieving efficient heat dissipation and temperature gradient equilibrium, particularly in compact designs, leading to increased heating and safety issues due to high electrical and magnetic loads, which complicates the structure and volume of the motor.
Innovation Solution
A motor stator with a three-dimensional fitted winding inner groove embedding structure using nonmagnetic heat-conducting glue layers and a phase-change material layer, combined with heat-conducting foam-like base materials, to enhance heat conduction and reduce temperature peaks, integrated with a casing and heat dissipation ribs for improved thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the motor size is reduced to meet compact design requirements, then the motor volume decreases, but the heat dissipation capacity is limited leading to increased temperature peaks and poor temperature gradient equilibrium
Solution Approach 1:
The patent transitions from traditional planar heat dissipation to three-dimensional heat conduction by embedding heat-conducting layers with phase-change material within the stator windings structure. This multi-dimensional heat conduction path enables efficient thermal management in compact motor designs by utilizing the third dimension (depth/layering) rather than relying solely on surface area expansion.
Solution Approach 2:
The patent incorporates phase-change material into the heat-conducting layers embedded in stator windings. This material undergoes phase transition (solid-liquid or other phase changes) at specific temperatures, absorbing or releasing latent heat to actively regulate temperature distribution and improve temperature gradient equilibrium within the compact motor structure.
2Power
If the electrical and magnetic loads are increased to achieve higher energy efficiency and output, then the motor performance improves, but the heating effect is aggravated leading to temperature peaks and safety issues
Solution Approach 1:
The patent introduces heat-conducting layers with phase-change material as an intermediary thermal management system between the heat-generating stator windings and the surrounding environment. This intermediary structure facilitates efficient heat transfer from high-temperature zones to cooler regions, preventing temperature peaks while enabling higher electrical and magnetic loads for improved motor performance.
Solution Approach 2:
The phase-change material embedded in the heat-conducting layers undergoes phase transitions to absorb excess heat generated by high electrical and magnetic loads. This phase change process provides active thermal regulation, preventing temperature peaks and safety issues even when the motor operates at higher power levels for improved energy efficiency and output.
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 enables rapid and efficient heat conduction, reduces temperature gradients, and enhances energy efficiency, output load, while maintaining a compact motor design, achieving lighter weight, smaller size, and improved safety and reliability.
Implementation Method 1
a phase-change material layer interposed as an interlayer between the heat-conducting glue layers
Implementation Method 2
the phase-change material layer interposed as an interlayer between the heat-conducting glue layers
Implementation Method 3
nonmagnetic heat-conducting glue layers... The end of the inner groove embedding structure comprises nonmagnetic heat-conducting glue layers
Implementation Method 4
heat dissipation ribs for improved thermal management
Implementation Method 5
heat dissipation ribs for improved thermal management
Data Source
AI summary
The present disclosure provides a motor stator and a motor. The motor stator comprises a core; windings wound on the core; and a three-dimensional fitted winding inner groove embedding structure which is a cage-type structure having ribs and ends, the ribs being embedded in grooves between the windings, and the ends being connected to the ribs and cover ends of stator windings; both of the rib and the end of the inner groove embedding structure comprise nonmagnetic heat-conducting glue layers and a phase-change material layer interposed as an interlayer between the heat-conducting glue layers. According to the present disclosure, the heat of each part of the motor stator can be quickly conducted, so as to rapidly reduce the temperature, quickly eliminate the instantaneous temperature peak, and improve the temperature gradient equilibrium of each part.