An electric machine with a modular water cooling structure

Abstract

This utility model relates to a motor with a modular water-cooled structure, comprising a rotor and a stator core. The rotor is rotatably mounted within the stator core. End caps DE and NE are coaxially connected to both ends of the rotor, respectively. The DE and NE end caps are fixedly connected to both ends of the stator core and are rotatably connected to the rotor via bearings. Multiple arc-shaped water-cooling plates are arranged on the outer peripheral wall of the stator core, circumferentially along the stator core. The sides of adjacent arc-shaped water-cooling plates are tightly fitted together. Cooling channels are provided on the arc-shaped water-cooling plates, with inlets and outlets connected to both ends of the channels. The inlet connects to the output end of the cooling water circulation system, and the outlet connects to the input end of the cooling water circulation system. This technical solution eliminates the need for a stator frame, reducing motor cost and weight. The modular water-cooled structure can be disassembled individually without requiring overall disassembly and replacement, reducing maintenance costs and improving cooling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of motors, and in particular to a motor with a modular water-cooling structure. Background Technology

[0002] Water cooling is an effective cooling method for motors. Existing water-cooled motors generally require the machining of an integral water-cooling structure on the stator frame, which results in high manufacturing costs. Once the integral water-cooling structure becomes blocked or leaks after long-term use, it needs to be completely disassembled and replaced. When the water-cooling structure is complex, sometimes even the entire generator needs to be replaced, leading to high maintenance costs. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides a motor with a modular water-cooled structure.

[0004] The motor with a modular water-cooled structure provided in this application adopts the following technical solution: A motor with a modular water-cooled structure includes a rotor and a stator core. The rotor is rotatably disposed inside the stator core. The two ends of the rotor are coaxially connected to end caps DE and NE, respectively. The end caps DE and NE are fixedly connected to the two ends of the stator core, and the end caps DE and NE are rotatably connected to the rotor through bearings. Multiple arc-shaped water-cooled plates are arranged on the outer peripheral wall of the stator core. The multiple arc-shaped water-cooled plates are arranged along the circumference of the stator core. The sides of two adjacent arc-shaped water-cooled plates are tightly fitted together. Cooling channels are provided on the arc-shaped water-cooled plates. The two ends of the cooling channels are respectively connected to the water inlet and the water outlet. The water inlet is connected to the output end of the cooling water circulation system, and the water outlet is connected to the input end of the cooling water circulation system.

[0005] Preferably, the cooling channel is arranged in a serpentine shape along the length of the arc-shaped water-cooled plate.

[0006] Preferably, the arc-shaped water-cooled plate is fixed to the stator core by connecting screws.

[0007] Preferably, the arc-shaped water-cooled plate is provided with fixing holes, which are located between two adjacent horizontal sections of the cooling channel. Multiple fixing holes are equidistantly arranged along the length of the horizontal section of the cooling channel. The connecting screws correspond one-to-one with the fixing holes and pass through the fixing holes to be threadedly connected to the stator core.

[0008] Preferably, a heat-conducting layer is provided between the arc-shaped water-cooled plate and the stator core.

[0009] Preferably, the thermally conductive layer is made of thermally conductive silicone.

[0010] In summary, this application includes at least one of the following beneficial technical effects: 1. The stator core is in direct contact with the external environment, which reduces thermal resistance; 2. No stator frame is required, reducing motor cost and weight; 3. The modular water-cooling structure can be disassembled individually without the need for overall disassembly and replacement, reducing maintenance costs and improving cooling performance. Attached Figure Description

[0011] Fig. 1 This is a schematic diagram of the overall structure of a motor with a modular water-cooling structure in an embodiment of this application.

[0012] Fig. 2 This is a structural schematic diagram used to demonstrate the arc-shaped water-cooled plate in the embodiments of this application.

[0013] Fig. 3 This is a cross-sectional structural diagram of the internal cooling channel of the arc-shaped water-cooled plate in an embodiment of this application.

[0014] Explanation of reference numerals in the attached drawings: 1. Rotor; 2. Stator core; 3. DE end cap; 31. First annular shell; 4. NE end cap; 41. Second annular shell; 5. Bearing; 6. Arc-shaped water-cooled plate; 61. Cooling channel; 62. Water inlet; 63. Water outlet; 64. Fixing hole. Detailed Implementation

[0015] The following is in conjunction with the appendix Figs. 1-3 This application will be described in further detail.

[0016] This application discloses a motor with a modular water-cooled structure.

[0017] Reference Figs. 1-3 The motor with a modular water-cooled structure includes a rotor 1 and a stator core 2. The rotor 1 is rotatably mounted inside the stator core 2. Both ends of the rotor 1 are coaxially connected to end caps 3 (DE end) and 4 (NE end), respectively. End caps 3 (DE end) and 4 (NE end) are fixedly connected to both ends of the stator core 2 via a first annular housing 31 and a second annular housing 41. End caps 3 (DE end) and 4 (NE end) are rotatably connected to the rotor 1 via bearings 5. Both ends of the stator core 2 are directly fixed to the required assembly structure using stop bolts.

[0018] The stator core 2 is in direct contact with the external environment, which reduces thermal resistance. It eliminates the need for a stator frame, thus reducing the cost and weight of the motor.

[0019] Multiple arc-shaped water-cooled plates 6 are arranged on the outer peripheral wall of the stator core 2. These plates are positioned circumferentially around the stator core 2, with adjacent plates' sides tightly fitted together. Cooling channels 61 are provided on each arc-shaped water-cooled plate 6. Each channel 61 has an inlet 62 and an outlet 63 connected to its two ends. The inlet 62 connects to the output of the cooling water circulation system, and the outlet 63 connects to the input of the cooling water circulation system. The cooling water circulation system uses a common type of existing cooling water circulation system, which will not be described in detail here.

[0020] The cooling channel 61 is arranged in a serpentine pattern along the length of the arc-shaped water-cooled plate 6. The arc-shaped water-cooled plate 6 is made of thin metal sheets (such as stainless steel sheets, steel sheets, aluminum sheets, etc.) by welding.

[0021] The arc-shaped water-cooled plate 6 is fixed to the stator core 2 by connecting screws. The arc-shaped water-cooled plate 6 is provided with fixing holes 64, which are located between two adjacent horizontal sections of the cooling channel 61. Multiple fixing holes 64 are equidistantly arranged along the length of the horizontal section of the cooling channel 61. The connecting screws correspond one-to-one with the fixing holes 64, and the connecting screws pass through the fixing holes 64 and are threaded to the stator core 2.

[0022] The modular water-cooling structure can be disassembled individually without the need for complete disassembly and replacement, reducing maintenance costs and improving cooling performance.

[0023] A heat-conducting layer is provided between the arc-shaped water-cooled plate 6 and the stator core 2. The heat-conducting layer fills the micro-gaps at the joint surface between the arc-shaped water-cooled plate 6 and the stator core 2. The heat-conducting layer is made of thermally conductive silicone, which effectively reduces the thermal resistance at the joint surface between the arc-shaped water-cooled plate 6 and the stator core 2.

[0024] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electric machine having a modular water-cooled structure, characterized by: It includes a rotor and a stator core. The rotor is rotatably disposed inside the stator core. The two ends of the rotor are coaxially connected to end caps DE and NE, respectively. The end caps DE and NE are fixedly connected to the two ends of the stator core, and the end caps DE and NE are rotatably connected to the rotor through bearings. Multiple arc-shaped water-cooled plates are arranged on the outer peripheral wall of the stator core. The multiple arc-shaped water-cooled plates are arranged along the circumference of the stator core. The sides of two adjacent arc-shaped water-cooled plates are tightly fitted together. Cooling channels are provided on the arc-shaped water-cooled plates. The two ends of the cooling channels are respectively connected to the water inlet and the water outlet. The water inlet is connected to the output end of the cooling water circulation system, and the water outlet is connected to the input end of the cooling water circulation system.

2. The motor having a modular water cooling structure according to claim 1, characterized in that: The cooling channels are arranged in a serpentine pattern along the length of the arc-shaped water-cooled plate.

3. The motor with modular water cooling structure according to claim 1, characterized in that: The arc-shaped water-cooled plate is fixed to the stator core by connecting screws.

4. The motor with modular water cooling structure according to claim 3, characterized in that: The arc-shaped water-cooled plate is provided with fixing holes, which are located between two adjacent horizontal sections of the cooling channel. Multiple fixing holes are equidistantly arranged along the length of the horizontal section of the cooling channel. The connecting screws correspond one-to-one with the fixing holes, and the connecting screws pass through the fixing holes and are threadedly connected to the stator core.

5. The motor with modular water cooling structure according to claim 1, characterized in that: A heat-conducting layer is provided between the arc-shaped water-cooled plate and the stator core.

6. The motor with modular water cooling structure according to claim 5, characterized in that: The thermally conductive layer is made of thermally conductive silicone.

Images