Axial field motor and cooling structure therefor

Abstract

This invention provides an axial magnetic field motor and its cooling structure. The cooling structure includes a first stator connecting shell with a first water inlet channel and a first water outlet channel separated from each other; a second stator connecting shell with a second circulating water channel; an intermediate shell that forms a rotor housing cavity, with the first and second stator connecting shells connected to each other on its axial sides, and an intermediate inlet channel and an intermediate outlet channel respectively provided on the intermediate shell, with the second circulating water channel connecting between the intermediate inlet channel and the intermediate outlet channel; a water inlet located on the first stator connecting shell, with the first water inlet channel connecting between the water inlet and the intermediate inlet channel; and a water outlet located on the first stator connecting shell, with the first water outlet channel connecting between the intermediate outlet channel and the water outlet. This reduces the number of assembly parts, avoids complicated assembly processes, and effectively cools the rotor, ensuring reliable and stable motor operation.

Description

Technical Field

[0001] This invention relates to the field of axial magnetic field motors, and more particularly to an axial magnetic field motor and its cooling structure. Background Technology

[0002] Axial field motors, also known as disc motors, have advantages such as small size, high torque density, high power density, and high efficiency, and are widely used in electric vehicles, general industries, and other fields. Depending on the number of stators and rotors, axial field motors can be further classified into single-stator single-rotor, single-stator dual-rotor, and dual-stator single-rotor axial field motors, etc.

[0003] However, regardless of the type of motor, all motors generate various losses during operation, leading to heat generation. Therefore, to improve motor efficiency, a cooling structure needs to be designed. Taking a single-stator dual-rotor axial magnetic field motor as an example, it includes one rotor, two stators, and two housings. Each housing houses one stator. When the two housings are assembled relative to each other, the rotor is encapsulated within the housing and held between the two stators. Since the stators are fixed to the bottom plate of the housing in contact, cooling is currently achieved by adding cooling water channels within the bottom plate of each housing and introducing cooling medium into the cooling water channels.

[0004] Because each housing has a cooling water channel, and each cooling water channel has a corresponding inlet and outlet, the stator dual-rotor axial magnetic field motor has two inlets and two outlets. The cooling medium is introduced through external water pipes, resulting in numerous assembly parts, complex processes, and even leakage at external connections. Although the above-mentioned cooling water channel arrangement can effectively cool the stator, the rotor core is also a heat-generating component, and the rotor is far from the cooling water channels on the side base plates, thus failing to effectively cool the rotor. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an axial magnetic field motor and its cooling structure that rationally utilizes the housing to circulate cooling water channels on both sides, thereby reducing the use of inlet and outlet water, avoiding cumbersome processes, and effectively cooling the rotor.

[0006] According to one objective of the present invention, a cooling structure for an axial magnetic field motor is provided, comprising:

[0007] A first stator connecting shell, wherein a first water inlet channel and a first water outlet channel are provided inside the first stator connecting shell and are separated from each other;

[0008] A second stator connecting shell, wherein a second circulating water channel is provided inside the second stator connecting shell;

[0009] An intermediate shell surrounds a rotor housing cavity. The first stator connecting shell and the second stator connecting shell are respectively connected to the axial sides of the intermediate shell. An intermediate inlet channel and an intermediate outlet channel are respectively provided on the intermediate shell. The second circulating water channel is connected between the intermediate inlet channel and the intermediate outlet channel.

[0010] A water inlet is provided on the first stator connecting shell, and a first water inlet channel is connected between the water inlet and the intermediate inlet channel;

[0011] A water outlet is provided on the first stator connecting shell, and the first water outlet channel is connected between the intermediate flow channel and the water outlet.

[0012] In a preferred embodiment, the first stator connecting shell includes a first outer side plate, a first inner side plate, a first outer bottom plate, a first inner bottom plate, and two first isolation blocks. The first outer side plate and the first inner side plate are respectively connected between the first outer bottom plate and the first inner bottom plate. The first isolation blocks are connected between the first outer bottom plate and the first inner bottom plate and extend from the first inner side plate to the first outer side plate, so as to divide the interior of the first stator connecting shell into a first water inlet channel and a first water outlet channel that are separated from each other.

[0013] The intermediate shell is connected to the first inner bottom plate, and the first inner bottom plate has a first inner inlet that connects the first water inlet channel and the intermediate inlet channel, and a first inner outlet that connects the intermediate outlet channel and the first outlet channel.

[0014] In a preferred embodiment, the inlet and the outlet are disposed on the first outer bottom plate.

[0015] In a preferred embodiment, the second stator connecting shell includes a second outer side plate, a second inner side plate, a second outer bottom plate, a second inner bottom plate, and a second isolation block, wherein the second inner side plate and the second outer side plate are respectively connected between the second outer bottom plate and the second inner bottom plate;

[0016] The intermediate shell is connected to the second inner bottom plate. The second inner bottom plate has a second inner inlet that connects the intermediate inlet channel and the second circulating water channel, and a second inner outlet that connects the second circulating water channel and the intermediate outlet channel. The second isolation block is connected between the second outer bottom plate and the second inner bottom plate. The second isolation block extends from the second inner side plate to the second outer side plate and is located between the second inner inlet and the second inner outlet.

[0017] In a preferred embodiment, the first outer side plate protrudes outward to form a first protrusion, and the first inner inlet and the first inner outlet are located on the first inner bottom plate corresponding to the first protrusion.

[0018] The second outer side plate protrudes outward to form a second protrusion, and the second inner inlet and the second inner outlet are located on the second inner bottom plate corresponding to the second protrusion;

[0019] The intermediate shell protrudes outward to form an intermediate convex portion. The intermediate inlet channel and the intermediate outlet channel are located inside the intermediate convex portion. The first convex portion and the second convex portion are respectively aligned and connected to both sides of the intermediate convex portion along its axial direction.

[0020] In a preferred embodiment, at least two sealing rings are also included, with the first protrusion and the second protrusion respectively having a sealing ring between them and the intermediate protrusion.

[0021] In a preferred embodiment, the intermediate protrusion is provided with a sealing groove for embedding the sealing ring.

[0022] In a preferred embodiment, the first outer side plate protrudes outward to form a set of first connecting ears, the second outer side plate protrudes outward to form a set of second connecting ears, and the intermediate shell protrudes outward to form two sets of intermediate connecting ears. The two sets of intermediate connecting ears are respectively disposed on both sides of the axial direction of the intermediate shell. The two sets of intermediate connecting ears are respectively aligned with the first connecting ears and the second connecting ears, and are connected by fasteners.

[0023] In a preferred embodiment, a plurality of first diversion blocks are provided inside the first stator connection shell, and the first diversion blocks are connected to the first inner side plate and / or the first outer side plate.

[0024] The second stator connecting shell has a plurality of second diverter blocks inside, and the second diverter blocks are connected to the second inner side plate and / or the second outer side plate.

[0025] According to another objective of the present invention, the present invention also provides an axial magnetic field motor, including the cooling structure of the above embodiment, the axial magnetic field motor further including a first stator, a second stator and a rotor disposed in the stator-rotor accommodating cavity, the first stator being connected to a first stator connecting shell, the second stator being connected to a second stator connecting shell, and the rotor air gap being maintained between the first stator and the second stator.

[0026] Compared with existing technologies, this technical solution has the following advantages:

[0027] By redesigning the housing of the axial magnetic field motor to obtain the first stator connecting shell, the second stator connecting shell, and the intermediate shell, and by setting the intermediate inlet channel and the intermediate outlet channel on the intermediate shell, the water channels on the first stator connecting shell and the second stator connecting shell can be circulated, so that the cooling structure only needs to be provided with one water inlet and one water outlet, reducing the number of assembly parts, avoiding complicated assembly processes, and achieving the goal of reducing costs.

[0028] The intermediate inlet channel and the intermediate outlet channel can also be used on the intermediate shell to cool the rotor held between the two stators, thereby improving the cooling effect and ensuring the reliability and stability of motor operation.

[0029] A sealing ring is provided between the first protrusion and the second protrusion and the intermediate protrusion to improve the sealing performance.

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0031] Figure 1 This is an exploded view of the axial magnetic field motor described in this invention;

[0032] Figure 2 This is a rear view of the axial magnetic field motor described in this invention;

[0033] Figure 3 This is a front view of the axial magnetic field motor described in this invention;

[0034] Figure 4 This is a schematic diagram of the outer side of the first stator connecting shell of the present invention;

[0035] Figure 5 This is a schematic diagram of the inner side of the first stator connecting shell of the present invention;

[0036] Figure 6 This is a schematic diagram of the interior of the first stator connecting shell of the present invention;

[0037] Figure 7 This is a schematic diagram of the inner side of the second stator connecting shell of the present invention;

[0038] Figure 8 This is a schematic diagram of the interior of the second stator connecting shell of the present invention;

[0039] Figure 9 This is a schematic diagram of one direction of the intermediate shell described in this invention;

[0040] Figure 10 This is a schematic diagram of the intermediate shell described in this invention from another direction.

[0041] In the diagram: 100 Cooling structure, 110 First stator connecting shell, 1101 First water inlet channel, 1102 First water outlet channel, 111 First outer side plate, 111a First protrusion, 111b First connecting lug, 112 First inner side plate, 113 First outer bottom plate, 113a Wiring shell, 114 First inner bottom plate, 114a First inner inlet, 114b First inner outlet, 115 First isolation block, 116 First diverter block, 117 First mounting hole, 120 Second stator connecting shell, 1201 Second circulating water channel, 121 Second outer side plate, 121a Second protrusion, 121b Second connecting lug 122 Second inner side plate, 123 Second outer bottom plate, 124 Second inner bottom plate, 124a Second inner inlet, 124b Second inner outlet, 125 Second isolation block, 126 Second diverter block, 127 Second mounting hole, 130 Intermediate shell, 1300 Stator and rotor accommodating cavity, 1301 Intermediate inlet channel, 1302 Intermediate outlet channel, 131 Intermediate protrusion, 131a Sealing groove, 132 Intermediate connecting lug, 140 Water inlet, 150 Water outlet, 160 Sealing ring, 170 Fastener, 180 Motor wiring port, 200 First stator, 300 Second stator. Detailed Implementation

[0042] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0043] First Embodiment

[0044] like Figures 1 to 10 As shown, the cooling structure 100 of the axial magnetic field motor includes:

[0045] A first stator connecting shell 110, wherein a first water inlet channel 1101 and a first water outlet channel 1102 are provided inside the first stator connecting shell 110, which are separated from each other;

[0046] A second stator connecting shell 120, wherein a second circulating water channel 1201 is provided inside the second stator connecting shell 120;

[0047] An intermediate shell 130 surrounds a rotor accommodating cavity 1300. The first stator connecting shell 110 and the second stator connecting shell 120 are respectively connected to the axial sides of the intermediate shell 130. An intermediate inlet channel 1301 and an intermediate outlet channel 1302 are respectively provided on the intermediate shell 130. The second circulating water channel 1201 is connected between the intermediate inlet channel 1301 and the intermediate outlet channel 1302.

[0048] A water inlet 140 is provided on the first stator connecting shell 110, and a first water inlet channel 1101 is connected between the water inlet 140 and the intermediate inlet channel 1301.

[0049] A water outlet 150 is provided on the first stator connecting shell 110, and the first water outlet channel 1102 is connected between the intermediate outflow channel 1302 and the water outlet 150.

[0050] By redesigning the housing of the axial magnetic field motor, the first stator connecting shell 110, the second stator connecting shell 120, and the intermediate shell 130 are obtained. An intermediate inlet channel 1301 and an intermediate outlet channel 1302 are provided on the intermediate shell 130. This allows water circulation in the channels of the first stator connecting shell 110 and the second stator connecting shell 120, so that the cooling structure 100 only needs one corresponding inlet 140 and outlet 150. This reduces the number of assembly parts, avoids cumbersome assembly processes, and simultaneously reduces costs. Furthermore, the intermediate inlet channel 1301 and the intermediate outlet channel 1302 on the intermediate shell 130 bring it closer to the rotor, enabling cooling of the rotor held between the two stators 300, thereby improving the cooling effect and ensuring reliable and stable motor operation.

[0051] like Figures 4 to 6 As shown, the first stator connecting shell 110 is disc-shaped and includes a first outer side plate 111, a first inner side plate 112, a first outer bottom plate 113, and a first inner bottom plate 114. The first outer bottom plate 113 and the first inner bottom plate 114 are generally annular. The first outer side plate 111 extends and connects to the outer edge of the first outer bottom plate 113 and the outer edge of the first inner bottom plate 114. The first inner side plate 112 extends and connects to the inner edge of the first outer bottom plate 113 and the inner edge of the first inner bottom plate 114.

[0052] exist Figure 6 In the first stator connecting shell 110, two first isolation blocks 115 are also included. The first isolation blocks 115 are connected between the first outer bottom plate 113 and the first inner bottom plate 114, and extend from the first inner side plate 112 to the first outer side plate 111, so as to divide the interior of the first stator connecting shell 110 into a first water inlet channel 1101 and a first water outlet channel 1102 that are separated from each other. The two first isolation blocks 115 are located on the same straight line, that is, the first water inlet channel 1101 and the first water outlet channel 1102 both have a circumferential arc of 180°.

[0053] refer to Figures 1 to 6The intermediate shell 130 is connected to the first inner bottom plate 114. The first inner bottom plate 114 has a first inner inlet 114a connecting the first water inlet channel 1101 and the intermediate inlet channel 1301, and a first inner outlet 114b connecting the intermediate outlet channel 1302 and the first outlet channel 1102. (Reference) Figure 4 The inlet 140 and the outlet 150 are disposed on the first outer base plate 113. It can be seen that one of the first isolation blocks 115 is located between the first inner inlet 114a and the first inner outlet 114b, and the three are adjacent to each other, ensuring the heat exchange area and preventing the cooling medium from not flowing evenly and sufficiently into the interior of the first stator connecting shell 110, and instead being discharged directly, thus affecting the cooling effect. The other first isolation block 115 is located between the inlet 140 and the outlet 150, and similarly, the three are arranged adjacent to each other, ensuring that the cooling medium can fill the interior of the first stator connecting shell 110.

[0054] like Figure 7 and Figure 8 As shown, the second stator connecting shell 120 is disc-shaped and includes a second outer side plate 121, a second inner side plate 122, a second outer bottom plate 123, and a second inner bottom plate 124. The second outer bottom plate 123 and the second inner bottom plate 124 are annular. The second outer side plate 121 is connected to the outer edge of the second outer bottom plate 123 and the outer edge of the second inner bottom plate 124, and the second inner side plate 122 is connected to the inner edge of the second outer bottom plate 123 and the inner edge of the second inner bottom plate 124.

[0055] like Figures 1 to 3 , Figure 7 and Figure 8 As shown, the intermediate shell 130 is connected to the second inner bottom plate 124. The second inner bottom plate 124 has a second inner inlet 124a that connects the intermediate inlet channel 1301 and the second circulating water channel 1201, and a second inner outlet 124b that connects the second circulating water channel 1201 and the intermediate outlet channel 1302.

[0056] exist Figure 8 In this configuration, the second stator connecting shell 120 further includes a second isolation block 125. The second isolation block 125 is connected between the second outer bottom plate 123 and the second inner bottom plate 124. The second isolation block 125 extends from the second inner side plate 122 to the second outer side plate 121 and is located between the second inner inlet 124a and the second inner outlet 124b. By providing the second isolation block 125, the cooling medium introduced from the second inner inlet 124a is prevented from being directly discharged from the second inner outlet 124b, thus reducing the heat exchange area and affecting the cooling capacity.

[0057] like Figures 4 to 10 As shown, the cooling medium can be a cooling liquid or a gas, and the cooling liquid includes cooling water or cooling oil. The flow pattern of the cooling medium within the cooling structure 100 is as follows:

[0058] Cooling medium is introduced into the first inlet channel 1101 through the inlet 140, for reference. Figure 6 The cooling medium then flows counterclockwise through the first inlet channel 1101, and is then introduced into the intermediate inlet channel 1301 of the intermediate shell 130 through the first inner inlet 114a. (Refer to...) Figure 9 .

[0059] The cooling medium in the intermediate inlet channel 1301 is introduced into the second circulating water channel 1201 through the second inner inlet 124a. (Reference) Figure 8 The cooling medium then flows counterclockwise through the second circulating water channel 1201, and is then introduced into the intermediate outlet channel 1302 of the intermediate shell 130 through the second inner outlet 124b. (Refer to...) Figure 9 .

[0060] The cooling medium in the intermediate outlet channel 1302 is introduced into the first outlet channel 1102 through the first inner outlet 114b. (Reference) Figure 6 Then it flows counterclockwise through the first outlet channel 1102 and finally exits from the outlet 150.

[0061] It can be seen that the first inlet channel 1101 and the first outlet channel 1102 are spaced apart circumferentially and are fully disposed inside the first stator connecting shell 110. The second circulating channel 1201 is disposed circumferentially inside the second stator connecting shell 120. The intermediate inlet channel 1301 and the intermediate outlet channel 1302 are disposed axially and penetrate the intermediate shell 130 to ensure the heat exchange area and improve the cooling capacity of the stator and rotor.

[0062] like Figure 6As shown, the first stator connecting shell 110 has a plurality of first diversion blocks 116 inside, and the first inner side plate 112 and / or the first outer side plate 111 are connected to the first diversion blocks 116. By setting the first diversion blocks 116, the flow rate can be increased, thereby improving the cooling capacity. Specifically, the first stator connecting shell 110, where the first water inlet channel 1101 is located, has three first diversion blocks 116 inside. The three first diversion blocks 116 are circumferentially spaced and connected to the first inner side plate 112, and there is a gap between the first diversion blocks 116 and the first outer side plate 111. In this way, the cooling medium is diverted through the first diversion blocks 116, increasing the flow rate and thus improving the cooling efficiency. Inside the first stator connecting shell 110, where the first water outlet 1102 is located, there are two first diversion blocks 116. The two first diversion blocks 116 are circumferentially spaced and connected to the first outer side plate 111, and there is a gap between the first diversion blocks 111 and the first inner side plate 112 to divert the cooling medium and increase the flow velocity through the first water outlet 1102, thereby improving cooling efficiency. The first diversion block 111 corresponding to the first water inlet 1101 is connected to the first inner side plate 112, while the first diversion block 111 corresponding to the first water outlet 1102 is connected to the first outer side plate 111, so that the force is evenly distributed, thereby ensuring structural strength.

[0063] like Figure 8 As shown, the second stator connecting shell 120 is provided with a plurality of second diverter blocks 126. The second inner side plate 122 and / or the second outer side plate 121 are connected to the second diverter blocks 126. The plurality of second diverter blocks 126 are connected to the second inner side plate 122 and the second outer side plate 121 at staggered intervals, which not only ensures uniform stress distribution but also increases the flow rate of the cooling medium, thereby improving structural strength and cooling capacity. When the second diverter block 126 is connected to the second inner side plate 122, there is a gap between it and the second outer side plate 121; when the second diverter block 126 is connected to the second outer side plate 121, there is a gap between the second diverter block 126 and the second inner side plate 122.

[0064] The first diverter block 116, the second diverter block 126, the first isolation block 115 and the second isolation block 125 can all be in a straight line shape. Of course, the first diverter block 116 and the second diverter block 126 can be in a Y shape in whole or in part.

[0065] like Figure 1 and Figure 4As shown, the inlet 140 and the outlet 150 may be provided with corresponding connectors for connecting external water pipes for introducing and drawing out the cooling medium. The inlet 140 and the outlet 150 are held on the first outer base plate 113 of the first stator connecting housing 110 and are adjacent to each other for easy wiring and management.

[0066] like Figure 5 As shown, the first outer side plate 111 protrudes outward to form a first protrusion 111a, and the first inner inlet 114a and the first inner outlet 114b are located on the first inner bottom plate 114 corresponding to the first protrusion 111a. Figure 7 As shown, the second outer side plate 121 protrudes outward to form a second protrusion 121a, and the second inner inlet 124a and the second inner outlet 124b are located on the second inner bottom plate 124 corresponding to the second protrusion 121a. Figure 9 and Figure 10 As shown, the intermediate shell 130 protrudes outward to form an intermediate protrusion 131, and the intermediate inlet channel 1301 and the intermediate outlet channel 1302 are located within the intermediate protrusion 131. (Reference) Figures 1 to 3 The first protrusion 111a and the second protrusion 121a are respectively aligned and connected to both sides of the intermediate protrusion 131 in the axial direction.

[0067] The first protrusion 111a is used to arrange the first inner inlet 114a and the first inner outlet 114b, so as not to affect the arrangement of the stator on the first stator connecting shell 110, wherein the stator is connected to the first inner side plate 112. The radial dimension of the first protrusion 111a only needs to meet the first inner inlet 114a and the first inner outlet 114b, so as to avoid increasing the volume. Similarly, the second protrusion 121a is used to arrange the second inner inlet 124a and the second inner outlet 124b, without affecting the connection on the second inner side plate 122 of the stator. Similarly, the intermediate protrusion 131 is used to arrange the intermediate outlet channel 1302 located on the intermediate protrusion 131, without affecting the arrangement of the rotor and stator in the stator-rotor receiving cavity 1300.

[0068] Furthermore, after the first stator connecting shell 110, the second stator connecting shell 120, and the intermediate shell 130 are assembled, their peripheries are aligned, avoiding increased space occupation and affecting applicability. The reduced number of inlet ports 140 and outlet ports 150 also contributes to miniaturization. The intermediate shell 130 has the same shape as the first stator connecting shell 110 and the second stator connecting shell 120, all being annular, so that the assembled axial magnetic field motor is annular. Of course, the first stator connecting shell 110, the second stator connecting shell 120, and the intermediate shell 130 can be square, etc., and are not limited here.

[0069] like Figure 1 , Figure 4 , Figure 7 and Figure 9 As shown, the first outer side plate 111 protrudes outward to form a set of first connecting ears 111b, the second outer side plate 121 protrudes outward to form a set of second connecting ears 121b, and the intermediate shell 130 protrudes outward to form two sets of intermediate connecting ears 132. The two sets of intermediate connecting ears 132 are respectively disposed on both sides of the axial direction of the intermediate shell 130. The two sets of intermediate connecting ears 132 are aligned with the first connecting ears 111b and the second connecting ears 121b, respectively, and are connected by fasteners 170. There are multiple intermediate connecting ears 132 in each set, and they are spaced apart circumferentially. Similarly, there are multiple second connecting ears 121b in each set and multiple first connecting ears 111b in each set, and they are all spaced apart axially to ensure uniform connection and connection strength.

[0070] like Figure 1 As shown, the cooling structure 100 of the axial magnetic field motor further includes at least two sealing rings 160. Sealing rings 160 are respectively provided between the first protrusion 111a and the second protrusion 121a and the intermediate protrusion 131. Taking the first inner inlet 114a and the intermediate inlet channel 1301 as examples, the sealing rings 160 are annular and surround the first inner inlet 114a and the intermediate inlet channel 1301 respectively, ensuring the sealing of the connection between the two and effectively preventing leakage. Sealing rings 160 are also correspondingly provided between the first inner outlet 114b and the intermediate outlet channel 1302. The sealing rings 160 corresponding to the first inner inlet 114a and the first inner outlet 114b can be integrally connected, which can effectively improve installation efficiency.

[0071] Preferably, the intermediate protrusion 131 is provided with a sealing groove 131a for embedding the sealing ring 160. This ensures that there are no gaps between the first stator connecting shell 110, the second stator connecting shell 120 and the intermediate shell 130, and also improves the sealing performance.

[0072] In summary, by redesigning the housing of the axial magnetic field motor, the first stator connecting shell 110, the second stator connecting shell 120, and the intermediate shell 130 are obtained. An intermediate inlet channel 1301 and an intermediate outlet channel 1302 are provided on the intermediate shell 130, enabling water circulation in the channels of the first stator connecting shell 110 and the second stator connecting shell 120. This allows the cooling structure 100 to have only one corresponding inlet 140 and outlet 150, reducing assembly components, avoiding cumbersome assembly processes, and simultaneously reducing costs. Furthermore, the intermediate inlet channel 1301 and the intermediate outlet channel 1302 on the intermediate shell 130 can be used to cool the rotor held between the two stators 300, thereby improving the cooling effect and ensuring reliable and stable motor operation. Sealing rings 160 are provided between the first protrusion 111a and the second protrusion 121a and the intermediate protrusion 131 respectively to improve sealing.

[0073] Second Embodiment

[0074] like Figure 1 As shown, an axial magnetic field motor includes the cooling structure 100 of the above embodiment. The axial magnetic field motor also includes a first stator 200, a second stator 300 and a rotor disposed in the stator-rotor accommodating cavity. The first stator 200 is connected to the first stator connecting shell 110, the second stator 300 is connected to the second stator connecting shell 120, and the rotor air gap is maintained between the first stator 200 and the second stator 300.

[0075] Since the axial magnetic field motor adopts the cooling structure 100 of the above embodiment, the beneficial effects of the axial magnetic field motor can be referred to the cooling structure 100 of the above embodiment.

[0076] like Figure 1 and Figure 5 As shown, the first stator 200 is connected to the first inner bottom plate 114 of the first stator connecting shell 110, and heat exchange occurs through the first water inlet channel 1101 and the first water outlet channel 1102 inside the first stator connecting shell 110. The first stator connecting shell 110 has several first mounting holes 117. After the first stator 200 is connected to the first inner bottom plate 114, it is locked to the first stator 200 by fasteners passing through the first mounting holes 117. The first mounting holes 117 can be countersunk holes.

[0077] Similarly, refer to Figure 1 and Figure 7The second stator 200 is connected to the second inner bottom plate 124 of the second stator connecting shell 120 and exchanges heat through the second circulating water channel 1201 inside the second stator connecting shell 120. The second stator connecting shell 120 is provided with a plurality of second mounting holes 127 for locking the second stator 300 with fasteners.

[0078] like Figure 1 , Figure 5 and Figure 7 As shown, the axial magnetic field motor further includes an output shaft, which sequentially passes through the centers of the first stator connecting shell 110, the intermediate shell 130, and the second stator connecting shell 120. The rotor is fixed to the output shaft. The rotor is cooled by a central inlet channel 1301 and a central outlet channel 1302 on the intermediate shell 130. Bearings are respectively provided between the output shaft and the first stator connecting shell 110 and the second stator connecting shell 120. Figure 5 and Figure 7 As shown, the first inner side plate 112 of the first stator connecting shell 110 has a step on its inner periphery, and the second inner side plate 122 of the second stator connecting shell 120 has a step on its inner periphery, for fixing the bearing.

[0079] like Figures 1 to 4 As shown, in addition to the water inlet 140 and the water outlet 150, the first outer base plate 113 of the first stator connection shell 110 also has a motor wiring port 180 for connecting a controller, etc. By simultaneously placing the water inlet 140, the water outlet 150, and the motor wiring port 180 on the first outer base plate 113, wiring and management are facilitated. Specifically, the first outer base plate 113 protrudes outward to form a wiring shell 113a. The wiring shell 113a is disposed along the edge of the first outer base plate 113 and is located within the area enclosed by the edge of the first outer base plate 113. The motor wiring port 180 is disposed on the wiring shell 113a, and the three motor wiring ports 180 are spaced apart circumferentially. This arrangement of the motor wiring ports 180 within the area enclosed by the edge of the first outer base plate 113 avoids an increase in radial dimension, which would affect installation adaptability.

[0080] The assembly method of the axial magnetic field motor is as follows:

[0081] The first stator 200 is connected to the first inner bottom plate 114 of the first stator connecting shell 110, and the second stator 300 is connected to the second inner bottom plate 124 of the second stator connecting shell 120.

[0082] The intermediate shell 130 is connected between the first inner bottom plate 114 of the first stator connecting shell 110 and the second inner bottom plate 124 of the second stator connecting shell 120, so that the first stator 200, the second stator 300, and the rotor located between the first stator 200 and the second stator 300 are all held in the stator and rotor receiving cavity 1300 of the intermediate shell 130.

[0083] The first stator connecting shell 110, the second connecting shell 120, and the intermediate shell 130 can all be integrally injection molded, achieving manufacturability and facilitating quick and easy assembly. A sealing ring 160 can also be added for sealing. (See reference...) Figure 1 For example, sealing rings 160 are provided between the first protrusion 111a and the second protrusion 121a and the intermediate protrusion 131, respectively.

[0084] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The scope of patent application of the present invention should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A cooling structure (100) for an axial magnetic field motor, characterized in that, include: A first stator connecting shell (110) is provided inside the first stator connecting shell (110), which has a first water inlet channel (1101) and a first water outlet channel (1102) that are separated from each other. A second stator connecting shell (120) is provided inside the second stator connecting shell (120), and a second circulating water channel (1201) is provided inside the second stator connecting shell (120). An intermediate shell (130) surrounds a rotor housing cavity (1300). The first stator connecting shell (110) and the second stator connecting shell (120) are respectively connected to the axial sides of the intermediate shell (130). An intermediate inlet channel (1301) and an intermediate outlet channel (1302) are respectively provided on the intermediate shell (130). The second circulating water channel (1201) is connected between the intermediate inlet channel (1301) and the intermediate outlet channel (1302). A water inlet (140) is provided on the first stator connecting shell (110), and a first water inlet channel (1101) is connected between the water inlet (140) and the intermediate inlet channel (1301); A water outlet (150) is provided on the first stator connecting shell (110), and the first water outlet channel (1102) is connected between the intermediate outflow channel (1302) and the water outlet (150).

2. The cooling structure (100) of the axial magnetic field motor as described in claim 1, characterized in that, The first stator connecting shell (110) includes a first outer side plate (111), a first inner side plate (112), a first outer bottom plate (113), a first inner bottom plate (114), and two first isolation blocks (115). The first outer side plate (111) and the first inner side plate (112) are respectively connected between the first outer bottom plate (113) and the first inner bottom plate (114). The first isolation block (115) is connected between the first outer bottom plate (113) and the first inner bottom plate (114) and extends from the first inner side plate (112) to the first outer side plate (111) to divide the interior of the first stator connecting shell (110) into a first water inlet channel (1101) and a first water outlet channel (1102) that are separated from each other. The intermediate shell (130) is connected to the first inner bottom plate (114). The first inner bottom plate (114) has a first inner inlet (114a) that connects the first water inlet channel (1101) and the intermediate water inlet channel (1301), and a first inner outlet (114b) that connects the intermediate water outlet channel (1302) and the first water outlet channel (1102).

3. The cooling structure (100) of the axial magnetic field motor as described in claim 2, characterized in that, The inlet (140) and the outlet (150) are disposed on the first outer bottom plate (113).

4. The cooling structure (100) of an axial field motor as set forth in claim 2, characterized by The second stator connecting shell (120) includes a second outer side plate (121), a second inner side plate (122), a second outer bottom plate (123), a second inner bottom plate (124), and a second isolation block (125). The second inner side plate (122) and the second outer side plate (121) are respectively connected between the second outer bottom plate (123) and the second inner bottom plate (124). The intermediate shell (130) is connected to the second inner bottom plate (124). The second inner bottom plate (124) has a second inner inlet (124a) that connects the intermediate inlet channel (1301) and the second circulating water channel (1201), and a second inner outlet (124b) that connects the second circulating water channel (1201) and the intermediate outlet channel (1302). The second isolation block (125) is connected between the second outer bottom plate (123) and the second inner bottom plate (124). The second isolation block (125) extends from the second inner side plate (122) to the second outer side plate (121) and is located between the second inner inlet (124a) and the second inner outlet (124b).

5. The cooling structure (100) of an axial field motor as set forth in claim 4, characterized by The first outer side plate (111) protrudes outward to form a first protrusion (111a), and the first inner inlet (114a) and the first inner outlet (114b) are located on the first inner bottom plate (114) corresponding to the first protrusion (111a); The second outer side plate (121) protrudes outward to form a second protrusion (121a), and the second inner inlet (124a) and the second inner outlet (124b) are located on the second inner bottom plate (124) corresponding to the second protrusion (121a); The intermediate shell (130) protrudes outward to form an intermediate protrusion (131). The intermediate inlet channel (1301) and the intermediate outlet channel (1302) are located inside the intermediate protrusion (131). The first protrusion (111a) and the second protrusion (121a) are respectively aligned and connected to both sides of the intermediate protrusion (131) in the axial direction.

6. The cooling structure (100) of an axial field motor as set forth in claim 5, characterized by It also includes at least two sealing rings (160), with the first protrusion (111a) and the second protrusion (121a) respectively having a sealing ring (160) between them and the intermediate protrusion (131).

7. The cooling structure (100) of the axial magnetic field motor as described in claim 6, characterized in that, The intermediate protrusion (131) is provided with a sealing groove (131a) for embedding the sealing ring (160).

8. The cooling structure (100) of the axial magnetic field motor as described in claim 4, characterized in that, The first outer side plate (111) protrudes outward to form a set of first connecting ears (111b), the second outer side plate (121) protrudes outward to form a set of second connecting ears (121b), and the intermediate shell (130) protrudes outward to form two sets of intermediate connecting ears (132). The two sets of intermediate connecting ears (132) are respectively disposed on both sides of the axial direction of the intermediate shell (130). The two sets of intermediate connecting ears (132) are aligned with the first connecting ears (111b) and the second connecting ears (121b) respectively, and are connected by fasteners (170).

9. The cooling structure (100) of the axial magnetic field motor as described in claim 4, characterized in that, The first stator connection shell (110) is provided with a plurality of first diverter blocks (116), and the first inner side plate (112) and / or the first outer side plate (111) are connected to the first diverter blocks (116). The second stator connecting shell (120) is provided with a plurality of second diverter blocks (126), and the second diverter blocks (126) are connected to the second inner side plate (122) and / or the second outer side plate (121).

10. An axial magnetic field motor, characterized in that, Including the cooling structure (100) as described in any one of claims 1 to 9, the axial magnetic field motor further includes a first stator (200), a second stator (300), and a rotor disposed within the stator-rotor accommodating cavity. The first stator (200) is connected to the first stator connecting shell (110), the second stator (300) is connected to the second stator connecting shell (120), and the rotor is disposed between the first stator (200) and the second stator (300). An air gap is provided between the rotor and the first stator (200) and the second stator (300) respectively.

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