Stator Assembly Corrosion Prevention via Segmented End Cover
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Solution Overview
Problem
Current electric motor stator assemblies suffer from ineffective electric corrosion prevention and noise issues during operation, which compromise motor performance.
Innovation Solution
A stator assembly design incorporating a cast aluminum upper end cover, insulation frame, fixing piece, and communicating piece, where the communicating piece connects the upper end cover and stator core, ensuring electrical conduction and preventing potential differences, while the fixing piece and insulation frame prevent short circuits and optimize internal structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stator core is tightly mated with the end covers, then electric corrosion prevention is improved, but noise is generated during motor operation
Solution Approach 1:
The end cover is divided into two separate parts: an aluminum end cover and an iron end cover. The aluminum end cover contacts the stator core to prevent electric corrosion, while the iron end cover is isolated from the stator core to avoid noise generation. This segmentation allows each part to fulfill its specific function without the drawbacks of tight mating.
Solution Approach 2:
An insulation frame made of insulating material is introduced as an intermediary between the aluminum end cover and the stator core. This insulation frame enables electrical connection while providing acoustic isolation, thus preventing electric corrosion without transmitting noise from the stator core to the end cover assembly.
2Stability of the object's composition
If the stator core is tightly mated with the end covers, then structural stability is improved, but assembly complexity increases
Solution Approach 1:
The end cover assembly is segmented into multiple components (aluminum end cover, iron end cover, insulation frame) that can be assembled in a modular fashion. The insulation frame serves as a positioning and connecting element that simplifies the overall assembly process while maintaining structural stability.
Solution Approach 2:
The insulation frame performs multiple functions simultaneously: it provides electrical insulation, mechanical support, positioning of the stator core, and acoustic isolation. This multi-functionality reduces the need for additional separate components, thereby simplifying the overall assembly structure.
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 electric corrosion prevention, reduces production costs, simplifies the assembly process, and improves production efficiency by ensuring reliable electrical connections and noise reduction.
Implementation Method 1
electric conduction is realized between the upper end cover and the stator core through the communicating piece, which avoids potential difference between the upper end cover and the stator core
Data Source
AI summary
A stator assembly and an electric motor are provided. The stator assembly has an upper end cover, a stator core, an insulation frame, a fixing piece and a communicating piece. The stator core is located below the upper end cover. The insulation frame is arranged on the stator core. The fixing piece is arranged at a top of the insulation frame. One end of the communicating piece is sandwiched between the fixing piece and the upper end cover, and another end extends in a thickness direction of the upper end cover and is connected to the stator core. The fixing piece fixes the insulation frame, the communicating piece and the upper end cover.