Stator assembly and motor
By winding the conductors in each slot in phase in the stator assembly, the insulation paper in the slot is eliminated, solving the problems of slot fill factor and temperature rise, improving motor efficiency, reducing insulation costs, and simplifying the manufacturing process.
CN115986970BActive Publication Date: 2026-04-03ZHEJIANG ZEEKR INTELLIGENT TECH CO LTD +2
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Patent Information
- Application Number
- CN202211500352.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-11-28
- Publication Date
- 2026-04-03
- Estimated Expiration
- 2042-11-28
AI Technical Summary
Technical Problem
The interphase insulation paper in the slots of existing flat wire motor stator windings reduces the slot fill factor, increases copper losses and winding temperature rise, limits motor power density, and increases insulation costs.
Method used
In the stator assembly, the conductors in each slot are set to be in phase, the insulating paper between conductors in the same slot is eliminated, the copper fill factor of the winding is increased by a specific winding method, and the wiring process is simplified.
Benefits of technology
It improves motor efficiency, reduces motor temperature rise and insulation costs, and simplifies the manufacturing process, thereby increasing motor manufacturing efficiency.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention provides a stator assembly and a motor. The stator assembly includes a stator core and multi-phase windings. The inner circumferential wall of the stator core has multiple slots along its circumference. Each slot has M layers of slots for conductor wiring. The multi-phase windings are arranged in the slots, where M is an even number. Each phase winding includes at least two parallel branches N, where N ≤ M / 2. The stator assembly is used in a motor with Q winding slots, P pole pairs, and m phases. The number of slots per pole per phase is q = Q / (2Pm), and the pole pitch is τ = Q / (2P). The stator assembly ensures that the conductors in the M layers of slots in each slot are all of the same phase through the winding of each phase winding. The stator assembly and motor provided by this invention can eliminate the need for insulating paper between conductors in the same slot, increase the copper fill factor of the windings, improve motor efficiency, reduce motor temperature rise, and simultaneously reduce insulation costs.
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