Disc motor cooling structure
By designing mounting cavities, core mounting slots, and turbulence mechanisms inside the stator housing in the disc motor, direct contact heat exchange between the liquid refrigerant and the stator core is achieved, solving the problem of low cooling efficiency in liquid cooling systems and improving heat dissipation efficiency and motor lifespan.
Patent Information
- Application Number
- CN202521218887.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-29
- Estimated Expiration
- 2035-06-16
AI Technical Summary
Existing liquid cooling systems for disc motors have low cooling efficiency and are difficult to control motor temperature effectively, leading to reduced efficiency and component aging, especially during high-load operation.
A disc-type motor cooling structure is designed, including an installation cavity inside the stator housing, a core installation groove, a water baffle ring, and a flow-turbulence mechanism. Liquid refrigerant directly contacts the stator core for heat exchange, flows through the inlet and outlet, and the flow-turbulence mechanism enhances the heat exchange efficiency.
This improves the heat dissipation efficiency of the stator core, extends the service life of the motor, and enhances the overall performance and reliability of the motor.
Smart Images

Figure CN224305548U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of disc motor technology, and specifically to a disc motor cooling structure. Background Technology
[0002] To improve the efficiency of disc motors, designing a cooling system is essential. Currently, cooling systems are mainly divided into two types: air cooling and liquid cooling. Liquid cooling is more advantageous due to its higher cooling efficiency. However, most existing liquid cooling systems use external cooling, where the coolant dissipates heat to the components through indirect contact. While this design can meet heat dissipation requirements to some extent, its cooling efficiency remains low, making it difficult to adequately handle the heat generated by the disc motor under high loads. Due to insufficient cooling efficiency, the temperature of the disc motor is difficult to control effectively, which not only reduces its operating efficiency but may also accelerate the aging and damage of critical internal components, significantly shortening the motor's lifespan. This problem is particularly pronounced in high-performance or long-term continuous operation applications, severely impacting the overall performance and reliability of the disc motor. Utility Model Content
[0003] To address the technical problem of poor cooling effect in the prior art, a disc-type motor cooling structure is provided.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a disc-type motor cooling structure, including a stator housing, a stator core, and coils. The coils surround the outside of the stator core, and there are gaps between adjacent coils. The innovation lies in: a downwardly recessed mounting cavity is provided inside the stator housing; multiple core mounting slots are arranged in a circular array inside the mounting cavity; multiple protrusions are provided at the bottom of the core mounting slots; the stator core is placed inside the core mounting slots; a water-blocking ring is provided at the center of the mounting cavity; a water-blocking strip is provided between the top of the water-blocking ring and the top inner wall of the mounting cavity; the water-blocking strip is located at the coil gaps; and an inlet and an outlet are also provided on the mounting cavity, located on the left and right sides of the water-blocking strip, respectively.
[0005] Furthermore, transition zones are provided at the upper and lower ends of the iron core mounting groove, and the transition zones are inclined surface structures.
[0006] Furthermore, multiple flow-disrupting mechanisms are also provided inside the mounting cavity.
[0007] Furthermore, the turbulence mechanism includes a pin, a bushing is sleeved on the outside of the pin, and a stirring blade is disposed on the outside of the bushing.
[0008] Furthermore, the stator core is a segmented core.
[0009] The beneficial effects of this utility model after adopting the above structure are as follows:
[0010] This invention relates to a disc motor cooling structure. Liquid refrigerant enters the mounting cavity through the inlet, exchanging heat with the exterior of the stator core. Because of the protrusions at the bottom of the core mounting slot, the liquid refrigerant enters the slot, contacts the bottom of the stator core, exchanges heat, and finally flows out through the outlet. Therefore, in this process, the liquid refrigerant can effectively exchange heat directly with the stator core to reduce its temperature, thereby improving the heat dissipation efficiency of the stator core and extending the service life of the disc motor. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model;
[0012] Figure 2 This is a schematic diagram of the stator housing in this utility model.
[0013] Explanation of reference numerals in the attached figures:
[0014] 1. Stator housing, 2. Stator core, 3. Coil, 4. Mounting cavity, 5. Core mounting groove, 6. Protrusion, 7. Water baffle ring, 8. Water baffle strip, 9. Liquid inlet, 10. Liquid outlet, 11. Transition zone, 12. Turbulence mechanism, 121. Pin, 122. Shaft sleeve, 123. Stirring blade. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings.
[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.
[0017] See Figure 1-2A disc-type motor cooling structure includes a stator housing 1, a stator core 2, and coils 3. The coils 3 surround the stator core 2, and there are gaps between adjacent coils. The stator housing 1 has a recessed mounting cavity 4 inside. Multiple core mounting slots 5 are arranged in a ring array inside the mounting cavity 4. Multiple protrusions 6 are provided at the bottom of the core mounting slots 5. The stator core 3 is placed in the core mounting slots 5. A water baffle ring 7 is provided at the center of the mounting cavity 4. A water baffle strip 8 is provided between the top of the water baffle ring 7 and the top inner wall of the mounting cavity 4. The water baffle strip 8 is located at the coil gaps. The mounting cavity 4 also has a liquid inlet 9 and a liquid outlet 10, which are located on the left and right sides of the water baffle strip 8, respectively. Specifically, the liquid refrigerant enters the mounting cavity 4 through the inlet 9 and exchanges heat with the outside of the stator core 2. Since the bottom of the core mounting groove 5 is provided with protrusions 6, the liquid refrigerant enters the core mounting groove 5, contacts the bottom of the stator core 2, exchanges heat, and finally flows out through the outlet 10. Therefore, in the above process, the liquid refrigerant can fully exchange heat with the stator core through direct contact to reduce the temperature of the stator core, thereby improving the heat dissipation efficiency of the stator core and extending the service life of the disc motor.
[0018] In this embodiment, transition zones 11 are provided at both the upper and lower ends of the core mounting groove 5. The transition zones 11 are inclined surfaces. The transition zones 11 are connected to the core mounting groove 5, allowing liquid refrigerant to be introduced into the core mounting groove 5, thereby facilitating full contact with the bottom of the stator core 2 for heat exchange.
[0019] In this embodiment, multiple flow-dispersing mechanisms 12 are also provided inside the mounting cavity 4. The flow-dispersing mechanisms turbulent the liquid refrigerant, enabling it to make full contact with the stator core.
[0020] In this embodiment, the turbulence mechanism 12 includes a pin 121, a bushing 122 is sleeved around the pin 121, and a stirring blade 123 is disposed on the outside of the bushing 122. The flowing liquid refrigerant impacts the stirring blade 123, causing the stirring blade 123 to rotate around the pin 121 via the bushing 122, thereby turbulenting the liquid refrigerant.
[0021] In this embodiment, the stator core 2 is a segmented core.
[0022] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A disc-type motor cooling structure, comprising a stator housing, a stator core, and coils, wherein the coils surround the outside of the stator core, and there are gaps between adjacent coils, characterized in that: The stator housing has a recessed mounting cavity inside, and multiple iron core mounting slots are arranged in a circular array inside the mounting cavity. Multiple protrusions are provided at the bottom of the iron core mounting slots. The stator iron core is placed in the iron core mounting slot. A water-blocking ring is provided at the center of the mounting cavity. A water-blocking strip is provided between the top of the water-blocking ring and the top inner wall of the mounting cavity. The water-blocking strip is located at the coil gap. The mounting cavity also has a liquid inlet and a liquid outlet, which are located on the left and right sides of the water-blocking strip, respectively.
2. The disc motor cooling structure according to claim 1, characterized in that: The upper and lower ends of the iron core mounting groove are provided with transition areas, and the transition areas are inclined surface structures.
3. The disc motor cooling structure according to claim 1, characterized in that: The mounting cavity is also equipped with multiple flow-disrupting mechanisms.
4. The disc motor cooling structure according to claim 3, characterized in that: The turbulence-disrupting mechanism includes a pin, a bushing is sleeved on the outside of the pin, and a stirring blade is disposed on the outside of the bushing.
5. The disc motor cooling structure according to claim 1, characterized in that: The stator core is a segmented core.