Axial motor, powertrain, and electric device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing axial motors face issues with heat dissipation and positioning of magnetic cores due to the use of pressure plates, which affect the magnetic core's positioning and heat dissipation effectiveness.
Innovation Solution
The axial motor stator is designed with a fastening plate that includes an accommodating groove and magnetic core holes, allowing for improved positioning and mounting of magnetic cores, enhanced heat dissipation, and reduced air gap distance, while using pole shoes to compensate for reduced magnetic conduction areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If pressure plates are added to fasten the stator, then the fastening performance is improved, but the heat dissipation effect deteriorates
Solution Approach 1:
The patent removes the pressure plate component from the stator structure and replaces it with a fastening ring that integrates fastening functionality directly into the stator body, eliminating the heat dissipation obstruction caused by separate pressure plates
Solution Approach 2:
The fastening ring integrates both fastening and heat dissipation functions into a single component that is directly connected to the stator, combining structural support with thermal management capabilities
2Strength
If pressure plates are added to fasten the stator, then the fastening performance is improved, but the positioning effect of magnetic core deteriorates
Solution Approach 1:
The patent removes the pressure plate that interfered with magnetic core positioning and replaces it with a fastening ring design that provides dedicated positioning structures
Solution Approach 2:
The fastening ring is divided into multiple sections with different functional zones: a fastening section for securing the stator and a positioning section with protrusions that precisely locate the magnetic core, allowing independent optimization of each function
3Area of stationary object
If the fastening plate is made thinner to increase space, then the space between fastening plate and end cover is increased, but the structural strength may deteriorate
Solution Approach 1:
The fastening ring incorporates radial protrusions that extend outward to provide positioning functionality, allowing the ring itself to be thinner while maintaining structural integrity through three-dimensional structural optimization
Solution Approach 2:
The fastening ring is designed as an integrated component combining fastening and positioning functions in a single structurally optimized piece, eliminating the need for thicker multi-layer constructions
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 design enhances torque output, improves magnetic conduction, and facilitates efficient heat dissipation without additional cooling pipes, thereby increasing the motor's performance and efficiency.
Implementation Method 1
The axial motor includes a stator and a rotor, and the stator includes an iron core and a winding wound on the iron core
Implementation Method 2
improves magnetic conduction
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
This application provides an axial motor, a powertrain, and an electric device. An axial motor stator of the axial motor is sleeved on a motor shaft by using an inner shaft sleeve. The axial motor stator includes a fastening plate and a plurality of magnetic cores. The plurality of magnetic cores are spaced apart around the inner shaft sleeve. A magnetic core end part of the magnetic core covers a part of an end surface of a magnetic core winding part of the magnetic core, and an end surface, of the magnetic core winding part, that is not covered by the magnetic core end part forms a step surface. The fastening plate is fastened to an end surface of the inner shaft sleeve. The fastening plate includes an accommodating groove that is concave relative to the end surface of the inner shaft sleeve. A plurality of magnetic core accommodating holes are provided in the accommodating groove. The plurality of magnetic core accommodating holes respectively correspond to magnetic core end parts that accommodate the plurality of magnetic cores. A part of a surface, of the fastening plate, that faces the magnetic core winding part is connected to the step surface of each magnetic core. In this application, the magnetic core is fastened by positioning the fastening plate on the step surface of the magnetic core, and the accommodating groove is provided, so that the fastening plate is thinner, and heat dissipation effect of the axial motor stator is improved.