Motor cooling structure and permanent magnet motor comprising same
By setting up heat dissipation channels and flow guides in the permanent magnet motor that are connected to the air gap between the rotor and stator, the heat-generating components are directly cooled by external cold air, which solves the problem of poor cooling effect and achieves efficient cooling and low-cost motor performance improvement.
CN224721719UActive Publication Date: 2026-09-04SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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Patent Information
- Application Number
- CN202522230590.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-10-22
AI Technical Summary
Technical Problem
The poor cooling effect of existing permanent magnet motors limits the improvement of motor power density and torque density.
Method used
The system employs first and second heat dissipation channels that connect to the air gaps of the rotor and stator, allowing external cold air to directly enter the motor and exchange heat with the heat-generating components. It also combines a flow guide and a heat dissipation section to improve airflow efficiency and uses aluminum windings instead of copper windings to reduce weight and cost.
Benefits of technology
It improves motor cooling efficiency and performance, reduces temperature rise, simplifies motor structure, reduces cooling components, lowers operating costs, and increases motor power density and torque density.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model provides a kind of motor cooling structure and the permanent magnet motor comprising it.The motor cooling structure includes: first radiating passage, the first radiating passage extends along the axial direction of rotor, the first radiating passage is communicated with stator and the air gap of the rotor, the both ends of the first radiating passage are provided with multiple air inlets, multiple the air inlets are distributed on the first radiating passage along the circumferential direction;Second radiating passage, the second radiating passage is communicated with the first radiating passage, the second radiating passage is annularly arranged on the outer circumferential side of the rotor along the radial direction of rotor and is communicated with the air gap of the stator and the rotor, and the second radiating passage includes air outlet;Radiating portion, the radiating portion is arranged at the air outlet.
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