TWI743930B - Water-cooling motor - Google Patents

Abstract

A water-cooling motor connected to a pumping structure having a stator and a water-cooling pipe is provided. A plurality of through holes are disposed on the stator. The water-cooling pipe is inserted through the respective through holes for heat transferring, and an input of the water-cooling pipe is connected to the pumping structure. Thereby, heat could be dissipated from the stator to solve a high heat generation by a high-power motor.

Description

Water-cooled motor

The present invention relates to motors, and particularly refers to a water-cooled motor.

Regarding motors, the output power requirements of the motors have recently become higher and higher. For example, motors used in various electric vehicles (including: electric vehicles, electric vehicles, electric bicycles, and electric assisted bicycles, etc.) are required to have high rotation speed and large torque.

While increasing the output power, the motor will also generate higher and more heat, causing the motor itself and even the various components near the motor to malfunction or damage due to the high heat from the motor.

Although existing heat dissipation products have been developed for motors, most of them are air-cooled heat dissipation, and air-cooled heat dissipation can no longer cope with the high heat generated by motors with high power output. Even if there is water-cooled heat dissipation for the motor, there are still the following shortcomings: the structure is too complicated and the cost is too high, and there are even the problems of being too large and occupying too much space due to improper piping design and other reasons.

The object of the present invention is to provide a water-cooled motor.

In order to achieve the above objective, the present invention provides a water-cooled motor, including: a stator with a plurality of pipeline perforations, the stator has an inner wall corresponding to each pipeline perforation; and at least one water-cooled tube inserted in each of the In the pipeline perforation, the water-cooled tube has an outer wall of the tube, and the outer wall of the tube of the at least one water-cooled tube is attached to the inner wall of each hole to conduct heat.

The present invention also provides another water-cooled motor connected with a pumping structure. The water-cooled motor includes: a stator with a plurality of pipeline perforations, the stator has a hole inner wall corresponding to each pipeline perforation; and at least one A water-cooled pipe is inserted into each of the pipeline perforations, the water-cooled pipe has an outer wall of the pipe, the outer wall of the at least one water-cooled pipe is attached to the inner wall of each hole to conduct heat, and an input end of the water-cooled pipe is connected to and Connected to the pumping structure.

Compared with the prior art, the present invention has the following effects: the heat of the stator can be efficiently transferred to other places in a water-cooled manner, so it has the effect of being able to cope with the high heat generated by a motor with a high power output.

100: Motor

1: stator

11: Ring core

111,112: core surface

113: Center opening

114: Snap recess

115: Pipeline perforation

1151: Hole Inner Wall

12: Magnetic pole

2: Water cooling pipe

2a: S-shaped pipe

2a1: longitudinal section

2a2: horizontal section

21: Tube outer wall

23: Input

24: Jumper section

3: Stator center piece

31: Outer ring

311: Snap Convex

32: Stator sleeve

321: end face

322: First positioning perforation

323: set hole

33: connecting rib

4: Rotor

41: ring body

42: Lid

43: accommodating space

5: Rotor sleeve

51: end face

52: second positioning perforation

6: axis

7: Shell

900: Pumping structure

L: Centerline

Fig. 1 is a three-dimensional assembly diagram of the stator and the water-cooling tube in the water-cooled motor of the present invention.

Fig. 2 is an exploded perspective view of the stator and the stator center piece in the water-cooled motor of the present invention.

Fig. 3 is a side view of the present invention according to Fig. 2 after being assembled.

Figure 4 is an exploded perspective view of the water-cooled motor of the present invention.

FIG. 5 is a three-dimensional assembly diagram of the present invention according to FIG. 4.

Fig. 6 is a perspective view of the water-cooled motor of the present invention from another angle of view after being assembled, and the figure shows that it is also connected to the pumping structure.

The detailed description and technical content of the present invention are described as follows in conjunction with the drawings. However, the drawings are only provided for reference and description, and are not intended to limit the present invention.

As shown in FIG. 4, the present invention provides a water-cooled motor, which includes: a stator 1, at least one water-cooled tube 2, a rotor 4, and a shaft 6, and preferably further includes a stator center piece 3 and a rotor sleeve 5. And see a housing 7 in FIG. 6. The water-cooled motor (hereinafter referred to as the motor) 100 of the present invention is mainly provided with a water-cooled structure on the stator 1, as detailed below.

As shown in FIGS. 1 to 3, the stator 1 includes a ring-shaped iron core 11 and a plurality of magnetic pole posts 12. The annular iron core 11 has a central opening 113 (see FIG. 2) and is defined with an axial direction and a radial direction (not marked) perpendicular to each other. The annular iron core 11 is also defined with a central opening 113 (see FIG. A center line L at the center of the core 11 (see Figure 1). Each magnetic pole post 12 protrudes from the outer peripheral edge of the annular iron core 11 in the radial direction, and protrudes from the center of the annular iron core 11 toward the outer peripheral edge of the annular iron core 11.

The annular iron core 11 is also provided with a plurality of pipeline perforations 115, so that the annular iron core 11 has an inner wall 1151 corresponding to each pipeline perforation 115. In detail, the annular iron core 11 has two iron core surfaces 111 and 112 opposite to each other. The two iron core surfaces 111 and 112 are perpendicular to the center line L. Each pipe perforation 115 is a straight line through the two iron cores. For the core surfaces 111 and 112, it must be noted that each pipe perforation 115 is arranged in at least one circle corresponding to the central opening 113 according to the annular shape of the annular iron core 11, and is arranged around the outer periphery of the annular iron core 11 and Between the inner periphery.

The water-cooling pipe 2 may be a water pipe that can only flow water supply liquid, or a heat pipe. In this embodiment, a water pipe that can only flow water supply liquid is taken as an example for description. The present invention does not limit the number of water-cooled pipes 2, which can be one or more. In this embodiment, one water-cooled pipe 2 is taken as an example for description, and the water-cooled pipe 2 has an input for water supply liquid in and out. Terminal (not shown in the figure) and an output terminal 23 (see Figure 6).

The water-cooling tube 2 has an outer tube wall 21 and penetrates into the perforations 115 of each pipeline, so that the outer tube wall 21 is attached to the inner wall 1151 of each hole to conduct heat. Preferably, as shown in Figure 1, the water-cooling pipe 2 is continuously bent back and forth. It is inserted into each pipe perforation 115; in detail, the water-cooling pipe 2 is bent into a plurality of S-shaped pipes 2a that are connected end to end by continuously bending back and forth (see FIG. 1).

Each S-shaped pipe 2a includes three horizontal sections 2a2 and two vertical sections 2a1 that are not marked with component symbols. The three horizontal sections 2a2 are spaced apart from each other and arranged in three rows, and one of the vertical sections 2a1 spans the first row of horizontal sections 2a2. Between the second row of horizontal section 2a2 and one end of the second row of horizontal section 2a2, the other longitudinal section 2a1 bridges between the second row of horizontal section 2a2 and the other end of the third row of horizontal section 2a2. Among them, the three horizontal sections 2a2 of each S-shaped pipe 2a are inserted in the three pipe perforations 115 side by side; the two longitudinal sections 2a1 of each S-shaped pipe 2a are from the two iron core surfaces 111 and 112, respectively. It is exposed, and the two longitudinal sections 2a1 of each S-shaped pipe 2a are close to or attached to the two iron core surfaces 111 and 112 respectively.

Preferably, the motor 100 of the present invention further includes a stator center piece 3. The stator center piece 3 is arranged in the central opening 113 of the stator 1 and is locked with the annular iron core 11. In detail, the stator center piece 3 includes an outer ring 31 and a stator sleeve 32. The outer ring 31 is a hollow ring. The stator sleeve 32 has two opposite end faces 321 and a set of holes 323, and the sleeve holes 323 are The stator sleeve 32 is penetrated from one end surface 321 toward the other end surface 321; the stator sleeve 32 is arranged in the outer ring 31, and the stator sleeve 32 and the outer ring 31 are coaxially connected by a plurality of connecting ribs 33; the stator sleeve 32 At least two first positioning holes 322 are also opened along the aforementioned axial direction or along the aforementioned centerline L. In this embodiment, two first positioning holes 322 are opened as an example for description. The water-cooling pipe 2 is inserted into the second A positioning hole 322 is positioned in the stator center piece 3.

As shown in Figures 3 and 4, in the majority of pipeline perforations 115, the second pipeline perforation 115 corresponding to the two first positioning perforations 322, the water-cooling pipe 2 passes through the corresponding two pipeline perforations 115. After the iron core surface 111 of the annular iron core 11, two bridge sections 24 can be further extended along the aforementioned radial direction to connect and communicate with the two first positioning holes 322.

The present invention does not limit the locking structure between the stator center piece 3 and the stator 1. In this embodiment, the description in this paragraph is taken as an example: the outer edge of the outer ring 31 is protrudingly provided with a locking protrusion 311, the inner peripheral edge of the annular iron core 11 is recessed with a detent recess 114, and the detent protrusion 311 corresponds to the detent recess 114 to engage Switch to fix the stator center piece 3 to the stator 1. Of course, the detent convex portion 311 and the detent concave portion 114 can also be arranged in reverse.

Thereby, the heat of the stator 1 can be transferred to the water flowing in the water cooling pipe 2 through the water cooling pipe 2, so that the water can dissipate the heat to the heat dissipation structure (not shown), so as to achieve the heat dissipation of the stator 1. The effect of efficient conduction and heat dissipation by means of water cooling.

As shown in FIGS. 4 to 6, the motor 100 of the present invention further includes a rotor 4, a rotor sleeve 5 and a shaft center 6.

The rotor 4 includes a ring body 41 and a cover body 42. The ring body 41 has two ports (not marked with reference symbols) communicating with each other and opposite to each other. The cover body 42 is closed on one of the ports of the ring body 41 and combined with each other to form a cover. , And make the rotor 4 have an accommodating space 43.

The rotor sleeve 5 is disposed on the cover 42 along the aforementioned axial direction and has two end faces 51 opposite to each other. The rotor sleeve 5 is also provided with at least two second positioning holes 52 along the aforementioned axial direction or along the aforementioned centerline L. In this embodiment, two second positioning holes 52 are opened as an example for description, and the second The positioning hole 52 linearly penetrates the two end faces 51 of the rotor sleeve 5. Two sections of the aforementioned water-cooling tube 2 are respectively inserted into the two first positioning holes 322 of the stator center piece 3 and the two second positioning holes 52 of the rotor sleeve 5 to be respectively positioned on the stator center piece 3 and the rotor sleeve. 5.

The shaft 6 is inserted into the rotor sleeve 5 along the aforementioned axial direction or along the aforementioned centerline L, and the aforementioned stator 1 is sleeved on the shaft 6 with the sleeve hole 323 of the stator central part 3, so that the stator 1 and the stator central part 3 They are collectively housed in the accommodating space 43 of the rotor 4. As shown in Figures 5 and 6, the two ends of the shaft 6 with external threads respectively protrude from the end surface 321 of the stator center piece 3 on the left side of the motor 100 and protrude from the end surface 51 of the rotor sleeve 5 on the right side of the motor 100. .

As shown in FIG. 6, the input end 23 of the water-cooling pipe 2 of the motor 100 of the present invention can be connected to a pumping structure 900 so that water can be circulated through the input end 23 into the water-cooling pipe 2 through the pumping structure 900. Water cooling The tube 2 can also be connected to a heat dissipation structure to dissipate the heat from the stator 1 in a water-cooled manner. In addition, the left and right sides of the motor 100 of the present invention can also be provided with housings, as shown in FIG. 6, that is, a housing 7 is provided on the right side.

In addition, it is worth noting that through the above design, the motor 100 of the present invention can not only achieve the water-cooled heat dissipation effect of the stator 1, but also achieve the effect of simplifying the structure and reducing the cost. , The stator center piece 3 and the rotor sleeve 5 and because the two longitudinal sections 2a1 of each S-shaped pipe 2a are close to or attached to the two iron core surfaces 111, 112 of the annular iron core 11, it also has the function of reducing the occupied space. Effect.

In summary, the water-cooled motor of the present invention can indeed achieve the intended use purpose and solve the shortcomings of the previous technology. It fully meets the requirements of an invention patent application. The application is filed in accordance with the patent law. Please check and grant the patent for this case in detail. Protect the rights of inventors.

The above are only the preferred and feasible embodiments of the present invention, and are not limited to the scope of the present invention. Any equivalent structural changes made by using the description and drawings of the present invention are all included in the present invention. Within the scope of the rights, he shall be Chen Ming.

1: stator

11: Ring core

111,112: core surface

115: Pipeline perforation

1151: Hole Inner Wall

12: Magnetic pole

2: Water cooling pipe

2a: S-shaped pipe

2a1: longitudinal section

2a2: horizontal section

21: Tube outer wall

L: Centerline

Claims (9)

A water-cooled motor includes: a stator with a plurality of pipeline perforations; the stator has a hole inner wall corresponding to each pipeline perforation; at least one water-cooled pipe is inserted into each pipeline perforation, and the water-cooled pipe has A tube outer wall, the tube outer wall of the at least one water-cooling tube is attached to the inner wall of each hole to conduct heat; The stators are locked with each other, the central part of the stator is provided with at least two positioning through holes, and the at least one water-cooling tube is inserted through the at least two positioning through holes for positioning. A water-cooled motor connected with a pumping structure. The water-cooled motor includes a stator with a plurality of pipe perforations, the stator has an inner wall corresponding to each pipe perforation, and at least one water-cooled pipe is inserted through each pipe. In the pipeline perforation, the water-cooling pipe has an outer wall of the pipe, the outer wall of the pipe of the at least one water-cooling pipe is attached to the inner wall of each hole to conduct heat, and an input end of the water-cooling pipe is connected and communicated with the pumping Structure; and a stator center piece, the stator has a center opening, the stator center piece is arranged in the center opening and is locked with the stator, the stator center piece is provided with at least two positioning through holes, the at least one water cooling tube is inserted Positioning in the at least two positioning through holes. The water-cooled motor according to claim 1 or 2, wherein there is one water-cooled tube, and the water-cooled tube is continuously bent back and forth and inserted into each of the pipeline perforations. The water-cooled motor according to claim 1 or 2, wherein the stator includes an annular iron core, and each of the pipes is perforated in the annular iron core. The water-cooled motor according to claim 4, wherein the annular iron core defines a center line and has two iron core surfaces opposite to each other, and the two iron core surfaces are perpendicular to the center line, and each of the pipes penetrates through The two iron core surfaces. The water-cooled motor of claim 1 or 2, wherein the stator center piece includes an outer ring and a stator sleeve, the outer ring is a hollow ring and is locked with the stator, and the stator sleeve is connected to the stator The at least two positioning through holes are opened in the outer ring. The water-cooled motor according to claim 1 or 2, further comprising a rotor, a rotor bushing, and a shaft center. The rotor includes a ring body and a cover combined with each other in a cover shape, and the rotor bushing is disposed on the cover Body, the shaft center is inserted through the rotor sleeve and the stator. For the water-cooled motor according to claim 7, the rotor sleeve is also provided with at least two positioning through holes, and the at least one water-cooling tube is inserted into the at least two positioning through holes of the stator center piece and the at least two positioning holes of the rotor sleeve. Positioning within the perforation. The water-cooled motor according to claim 8, wherein the stator center piece includes an outer ring and a stator sleeve, the outer ring is a hollow ring and is locked with the stator, and the stator sleeve is connected to the outer ring The at least two positioning perforations are provided inside.

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