Motor

Abstract

The motor comprises a shell, a stator core, a stator winding, a first outer liquid spraying ring, a second outer liquid spraying ring, a first inner liquid spraying ring and a second inner liquid spraying ring, a liquid inlet flow channel is formed in the shell, a first flow groove is formed in the outer circumferential wall of the stator core, the first flow groove is communicated with the liquid inlet flow channel, and the second flow groove is communicated with the second outer liquid spraying ring. A first runner communicated with the first runner is further formed in the stator iron core, one side of the first outer liquid spraying ring and one side of the second outer liquid spraying ring are both communicated with the first runner, and the other side of the first outer liquid spraying ring and the other side of the second outer liquid spraying ring are both opened towards a stator winding assembled on the stator iron core; one side of the first inner liquid spraying ring and one side of the second inner liquid spraying ring are both communicated with the liquid inlet flow channel, and liquid flowing through the other side of the first inner liquid spraying ring and liquid flowing through the other side of the second inner liquid spraying ring are suitable for flowing to a stator winding. According to the motor, the shell, the stator core and the stator winding are all cooled, and the heat dissipation performance of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor. Background Art

[0002] In the related art, most of the existing oil-cooled motors only cool the stator windings, which results in poor heat dissipation performance of the motor and affects the stability of the motor's working performance. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a motor that can cool the housing, stator core and stator winding, improve the heat dissipation performance of the motor, and ensure the working performance stability of the motor.

[0004] The motor according to the utility model comprises:

[0005] A shell body, wherein a liquid inlet channel is formed on the shell body, and the shell body defines an assembly space communicated with the liquid inlet channel;

[0006] A stator core, wherein a first flow groove is formed on an outer peripheral wall of the stator core, the outer peripheral wall of the stator core abuts against an inner peripheral wall assembled in the assembly space, and the first flow groove is communicated with a liquid inlet flow channel, and the stator core further forms a first flow channel communicated with the first flow groove;

[0007] A first outer liquid spray ring, a second outer liquid spray ring, a first inner liquid spray ring, and a second inner liquid spray ring are assembled in the assembly space. Along the axial direction of the stator core, the first outer liquid spray ring and the first inner liquid spray ring are both located at one end of the stator core, and the second inner liquid spray ring is both located at the other end of the stator core; the first outer liquid spray ring, the stator core, and the inner circumferential wall of the assembly space jointly define a second flow channel, the second outer liquid spray ring, the stator core, and the inner circumferential wall of the assembly space jointly define a third flow channel, and the second flow channel and the third flow channel are both connected to the first flow channel;

[0008] One side of the first outer liquid spray ring and one side of the second outer liquid spray ring are both connected to the first flow channel, and the other side of the first outer liquid spray ring and the other side of the second outer liquid spray ring are both open to the stator winding assembled on the stator core;

[0009] One side of the first inner liquid spray ring and one side of the second inner liquid spray ring are both connected to the liquid inlet channel, and the liquid flowing through the other side of the first inner liquid spray ring and the liquid flowing through the other side of the second inner liquid spray ring are suitable for flowing to the stator winding.

[0010] According to the motor of the utility model, when the cooling liquid used to cool the motor flows through the liquid inlet channel, the cooling liquid exchanges heat with the shell to achieve the effect of cooling the shell. The cooling liquid flowing through the liquid inlet channel can also flow into the first channel to exchange heat with the stator core when the cooling liquid flows through the first channel, thereby achieving the effect of cooling the stator core. In addition, the cooling liquid can also move to the stator winding through the first outer liquid spray ring, the second outer liquid spray ring, the first inner liquid spray ring and the second inner liquid spray ring respectively, thereby achieving the effect of cooling the stator winding.

[0011] Therefore, according to the motor of the present invention, the housing, stator core and stator winding are all cooled to improve the heat dissipation performance of the motor during operation of the motor, effectively reduce the temperature of the motor, and ensure the stability of the working performance of the motor.

[0012] In some examples of the utility model, one side of the first outer spray ring, the stator core and the inner circumferential wall of the assembly space together define a second flow channel, one side of the second outer spray ring, the stator core and the inner circumferential wall of the assembly space together define a third flow channel, a first spray hole open to the stator winding is formed on the other side of the first outer spray ring, the second flow channel connects the first spray hole and the first flow channel, a second spray hole open to the stator winding is formed on the other side of the second outer spray ring, and the third flow channel connects the second spray hole and the first flow channel.

[0013] In some examples of the present invention, the first outer liquid spraying ring includes a first ring portion and a second ring portion connected to each other, the outer diameter of the first ring portion is smaller than the outer diameter of the second ring portion, so that a first stepped groove is formed on the outer peripheral wall of the first outer liquid spraying ring, and the first stepped groove is configured as at least a part of the second flow channel;

[0014] The second outer liquid spray ring includes a third ring portion and a fourth ring portion connected to each other, the outer diameter of the third ring portion is smaller than the outer diameter of the fourth ring portion, so that a second stepped groove is formed on the outer peripheral wall of the second outer liquid spray ring, and the second stepped groove is configured as at least a part of the third flow channel.

[0015] In some examples of the present invention, the second outer liquid spray ring also has a first seal and a second seal. Along the axial direction of the second outer liquid spray ring, the first seal is arranged at an end of the third ring portion away from the fourth ring portion, and along the radial direction of the second outer liquid spray ring, the second seal is arranged on the outer peripheral wall of the fourth ring portion.

[0016] In some examples of the present invention, a fourth flow channel is formed in the first inner spray ring, a fifth flow channel is formed in the second inner spray ring, a third spray hole is formed on the other side of the first inner spray ring, the fourth flow channel connects the liquid inlet flow channel and the third spray hole, a fourth spray hole is formed on the other side of the second inner spray ring, and the fifth flow channel connects the liquid inlet flow channel and the fourth spray hole.

[0017] In some examples of the present invention, along the radial direction of the stator core, the first inner liquid spray ring is located on the inner side of the first outer liquid spray ring and is separated, and one end of the stator winding is located between the first inner liquid spray ring and the first outer liquid spray ring; the second inner liquid spray ring is located on the inner side of the second outer liquid spray ring and is separated, and the other end of the stator winding is located between the second inner liquid spray ring and the second outer liquid spray ring.

[0018] In some examples of the present invention, the third liquid spray hole and / or the fourth liquid spray hole is open toward the stator winding.

[0019] In some examples of the present invention, the motor further includes: a first balancing plate and a second balancing plate, the first balancing plate and the second balancing plate being fixedly mounted at two ends of the rotor of the motor respectively;

[0020] Along the axial direction of the rotor, the first inner liquid spray ring is arranged opposite to the first balance plate, and the third liquid spray hole faces the first balance plate, and the second inner liquid spray ring is arranged opposite to the second balance plate, and the fourth liquid spray hole faces the second balance plate.

[0021] In some examples of the present invention, a first liquid collecting groove and a plurality of first liquid throwing grooves are formed on a side surface of the first balance plate facing the third liquid spray hole, the first liquid collecting groove and the plurality of first liquid throwing grooves are both recessed toward the inside of the first balance plate, and the plurality of first liquid throwing grooves are sequentially arranged around the first liquid collecting groove along the edge of the first liquid collecting groove and are arranged at intervals;

[0022] A second liquid collecting groove and a plurality of second liquid throwing grooves are formed on one side surface of the second balance plate facing the fourth liquid spray hole. The second liquid collecting groove and the plurality of second liquid throwing grooves are both recessed toward the inside of the second balance plate. The plurality of second liquid throwing grooves are arranged in sequence and spaced apart along the edge of the second liquid collecting groove and around the second liquid collecting groove.

[0023] In some examples of the present utility model, the motor further includes: a first bearing and a second bearing, both of which are assembled on the housing, and the first bearing and the second bearing are respectively sleeved on both ends of the motor shaft of the motor;

[0024] The liquid inlet flow channel is formed with a first injection port and a second injection port, the first injection port faces the first bearing, and the second injection port faces the second bearing.

[0025] In some examples of the present invention, the housing includes a housing body and an end cover, wherein an assembly groove is formed in the housing body, and the end cover and the housing body are fixedly matched to cover the open end of the assembly groove to jointly define an assembly space;

[0026] The liquid inlet channel includes a main channel, a first branch channel and a second branch channel. The main channel and the first branch channel are connected and are both arranged in the shell wall of the shell body. The second branch channel is arranged in the shell wall of the end cover and is connected to the main channel.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 is a cross-sectional view of a motor according to an embodiment of the utility model;

[0030] Figure 2 is a three-dimensional schematic diagram of a stator core according to an embodiment of the utility model;

[0031] Figure 3 is a front view of a first stator punching sheet according to an embodiment of the utility model;

[0032] Figure 4 is a front view of a second stator punching sheet according to an embodiment of the utility model;

[0033] Figure 5 is a three-dimensional schematic diagram of a first outer liquid spray ring according to an embodiment of the utility model;

[0034] Figure 6 is a cross-sectional view of a first outer liquid spray ring according to an embodiment of the utility model;

[0035] Figure 7 is a three-dimensional schematic diagram of a second outer liquid spray ring according to an embodiment of the utility model;

[0036] Figure 8 is a cross-sectional view of a second outer liquid spray ring according to an embodiment of the utility model;

[0037] Fig. 9 is a three-dimensional schematic diagram of a first inner liquid spray ring according to an embodiment of the utility model;

[0038] Fig.10 is a cross-sectional view of a first inner liquid spray ring according to an embodiment of the utility model;

[0039] Fig.11 is a three-dimensional schematic diagram of a second inner liquid spray ring according to an embodiment of the utility model;

[0040] Fig.12 is a cross-sectional view of a second inner liquid spray ring according to an embodiment of the utility model;

[0041] Fig.13 is a three-dimensional schematic diagram of a first balance board according to an embodiment of the utility model;

[0042] Fig.14It is a cross-sectional view of a first balancing board according to an embodiment of the utility model.

[0043] Reference numerals:

[0044] Motor 100;

[0045] Shell 1; liquid inlet channel 11; liquid inlet port 11a; communication hole 11b; main channel 111; first branch channel 112; second branch channel 113; assembly space 12; first injection port 13; second injection port 14; shell body 15; assembly groove 150; end cover 16;

[0046] stator core 2; first flow channel 20; first flow groove 21a; axial flow groove 21b; first stator part 22; second stator part 23;

[0047] The first stator punching sheet 210; the slot notch 211; the flow channel through hole 212;

[0048] A second stator punching sheet 220;

[0049] Stator winding 3;

[0050] A first outer liquid spray ring 41; a second flow channel 410; a first liquid spray hole 411; a first ring portion 41a; a second ring portion 41b; a first stepped groove 41c;

[0051] The second outer liquid spray ring 42; the third flow channel 420; the second liquid spray hole 421; the third ring portion 42a; the fourth ring portion 42b; the second stepped groove 42c; the first sealing member 422; the second sealing member 423; the first groove 424; the second groove 425; the first mounting portion 426;

[0052] A first inner liquid spray ring 61; a fourth flow channel 610; a third liquid spray hole 611; a second mounting portion 612;

[0053] The second inner liquid spray ring 62; the fifth flow channel 620; the fourth liquid spray hole 621; the third mounting portion 622;

[0054] The first balance plate 71; the first liquid collecting tank 711; the first liquid throwing tank 712;

[0055] A second balance board 72;

[0056] Rotor 8; Motor shaft 9;

[0057] A first bearing 101; a second bearing 102. DETAILED DESCRIPTION

[0058] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0059] Reference below Figure 1-Figure 14 The motor 100 according to the embodiment of the present invention is described. The motor 100 can be applied to a vehicle, but the present invention is not limited thereto. The motor 100 can be applied to other equipment that requires the motor 100. For example, the motor 100 can also be applied to equipment such as aircraft or ships.

[0060] like Figure 1 As shown, the motor 100 according to the embodiment of the utility model includes: a shell 1, a stator core 2, a stator winding 3, a first outer liquid spray ring 41, a second outer liquid spray ring 42, a first inner liquid spray ring 61 and a second inner liquid spray ring 62, the shell 1 is formed with a liquid inlet channel 11, the shell 1 defines an assembly space 12 connected to the liquid inlet channel 11, the outer peripheral wall of the stator core 2 is formed with a first flow groove 21a, the outer peripheral wall of the stator core 2 is abutted against the inner peripheral wall of the assembly space 12, and the first flow groove 21a is connected to the liquid inlet channel 11, and the stator core 2 is also formed with a first flow channel 20 connected to the first flow groove 21a.

[0061] The first outer liquid spray ring 41, the second outer liquid spray ring 42, the first inner liquid spray ring 61 and the second inner liquid spray ring 62 are all assembled in the assembly space 12. Along the axial direction of the stator core 2, the first outer liquid spray ring 41 and the first inner liquid spray ring 61 are both located at one end of the stator core 2, and the second outer liquid spray ring 42 and the second inner liquid spray ring 62 are both located at the other end of the stator core 2.

[0062] One side of the first outer liquid spray ring 41 and one side of the second outer liquid spray ring 42 are both connected to the first flow channel 20 , and the other side of the first outer liquid spray ring 41 and the other side of the second outer liquid spray ring 42 are both open to the stator winding 3 assembled on the stator core 2 .

[0063] One side of the first inner liquid spray ring 61 and one side of the second inner liquid spray ring 62 are both connected to the liquid inlet channel 11, and the liquid flowing through the other side of the first inner liquid spray ring 61 and the liquid flowing through the other side of the second inner liquid spray ring 62 are both suitable for flowing to the stator winding 3 for cooling the motor 100.

[0064] The liquid flows into the first flow channel 20 along the liquid inlet channel 11. In the process of the cooling liquid flowing along the liquid inlet channel 11, the cooling liquid absorbs the heat of the shell 1, thereby achieving the effect of cooling the shell 1. In addition, when the stator core 2 is assembled in the assembly space 12, the outer peripheral wall of the stator core 2 abuts against the inner peripheral wall of the assembly space 12, and the first flow groove 21a is connected with the liquid inlet channel 11, so that the cooling liquid in the liquid inlet channel 11 can flow into the first flow groove 21a, and then the cooling liquid flows into the first flow channel 20 through the first flow groove 21a. In the process of the cooling liquid flowing through the first flow groove 21a and the first flow channel 20, the cooling liquid absorbs the heat of the stator core 2, thereby achieving the effect of cooling both the shell 1 and the stator core 2.

[0065] Then, the cooling liquid in the first flow channel 20 can flow to the other side of the first outer spray ring 41 through one side of the first outer spray ring 41, and the cooling liquid in the first flow channel 20 can flow to the other side of the second outer spray ring 42 through one side of the second outer spray ring 42, and then the cooling liquid flowing out from the other side of the first outer spray ring 41 and the cooling liquid flowing out from one side of the second outer spray ring 42 move toward the two ends of the stator winding 3 respectively. It can also be understood that a part of the cooling liquid flowing through the first flow channel 20 can be sprayed to one end of the stator winding 3 through the other side of the first outer spray ring 41, and another part of the cooling liquid flowing through the first flow channel 20 can be sprayed to the other end of the stator winding 3 through the other side of the second outer spray ring 42, and the heat of the stator winding 3 is absorbed by the cooling liquid to achieve the effect of cooling the stator winding 3.

[0066] In addition, part of the cooling liquid in the liquid inlet channel 11 can flow to the other side of the first inner liquid spray ring 61 through one side of the first inner liquid spray ring 61, and part of the cooling liquid in the liquid inlet channel 11 can flow to the other side of the second inner liquid spray ring 62 through one side of the second inner liquid spray ring 62, and then the cooling liquid flowing out from the other side of the first inner liquid spray ring 61 and the cooling liquid flowing out from the other side of the second inner liquid spray ring 62 move toward the two ends of the stator winding 3 respectively. It can also be understood that the cooling liquid can move to one end of the stator winding 3 after passing through the other side of the first inner liquid spray ring 61, and the cooling liquid can move to the other end of the stator winding 3 after passing through the other side of the second inner liquid spray ring 62, and the heat of the stator winding 3 is absorbed by the cooling liquid to achieve the effect of cooling the stator winding 3.

[0067] like Figure 1As shown, in some embodiments, the stator winding 3 is assembled on the stator core 2, and the stator winding 3 is extended along the axial direction of the stator core 2, and in the axial direction of the stator core 2, both ends of the stator winding 3 extend out of the two ends of the stator core 2. In addition, in the axial direction of the stator core 2, the first outer spray ring 41 and the first inner spray ring 61 are both located at one end of the stator core 2, and the second outer spray ring 42 and the second inner spray ring 62 are both located at the other end of the stator core 2, therefore, the first outer spray ring 41 and the first inner spray ring 61 are both used to cool one end of the stator winding 3, and the second outer spray ring 42 and the second inner spray ring 62 are both used to cool the other end of the stator winding 3, so that the cooling liquid cools the stator winding 3 evenly and sufficiently, avoiding the risk of high temperature of the stator winding 3.

[0068] like Figure 1 As shown, in some embodiments, a liquid inlet channel 11 is formed in the shell wall of the shell 1, and the shell 1 may also have a liquid inlet port 11a, which is connected to the liquid inlet channel 11, and the liquid inlet port 11a is also suitable for connecting with a cooling device, so that the cooling device can supply cooling liquid to the liquid inlet channel 11 through the liquid inlet port 11a, thereby achieving the effect of cooling liquid flowing into the liquid inlet channel 11.

[0069] Combination Figure 1 and Figure 2 As shown, in some embodiments, a first flow groove 21a is formed on the outer peripheral wall of the stator core 2, and along the radial direction of the stator core 2, the first flow groove 21a is recessed toward the interior of the stator core 2, so that when the stator core 2 is assembled in the assembly space 12, the outer peripheral wall of the stator core 2 abuts against the inner peripheral wall of the assembly space 12, so that the inner peripheral wall of the assembly space 12 covers the open end of the first flow groove 21a, and the first flow groove 21a is connected to the liquid inlet channel 11.

[0070] like Figure 1 As shown, in some embodiments, the shell wall of the shell 1 is also formed with a connecting hole 11b, which is located on the inner circumferential wall of the assembly space 12. The connecting hole 11b connects the liquid inlet channel 11 and the first flow groove 21a, so that the cooling liquid in the liquid inlet channel 11 flows into the first flow groove 21a through the connecting hole 11b, and then the cooling liquid flows into the first flow channel 20.

[0071] like Figure 2As shown, in some embodiments, the first flow groove 21a is extended along the circumferential direction of the stator core 2, the first flow channel 20 is extended along the axial direction of the stator core 2, and the first flow channel 20 is connected to the first flow groove 21a, so that the cooling liquid in the first flow groove 21a can flow into the first flow channel 20. Since the first flow groove 21a and the first flow channel 20 both start from the stator core 2, when the cooling liquid flows through the first flow groove 21a and the first flow channel 20, the cooling liquid cools the stator core 2, thereby avoiding the risk of high temperature in the stator core 2.

[0072] like Figure 2 As shown, in some embodiments, the first flow groove 21a can be constructed as an arc or a ring. In some embodiments of the utility model, taking the first flow groove 21a as a ring as an example, the cooling liquid can flow along the circumference of the stator core 2 when flowing through the first flow groove 21a, thereby facilitating uniform and sufficient cooling of the stator core 2.

[0073] Combination Figure 1 , Figure 3 , Figure 6 and Figure 8 As shown, when the first outer liquid spray ring 41 and the second outer liquid spray ring 42 are assembled in the assembly space 12, the first flow channel 20 extending along the axial direction of the stator core 2 is connected to one side of the first outer liquid spray ring 41 and one side of the second outer liquid spray ring 42, wherein, in the axial direction of the stator core 2, one side of the first outer liquid spray ring 41 is connected to one end of the first flow channel 20, and one side of the second outer liquid spray ring 42 is connected to the other end of the first flow channel 20. When the cooling liquid flows through the first flow channel 20, the cooling liquid flows along the first flow channel 20 through one side of the first outer liquid spray ring 41 to the other side of the first outer liquid spray ring 41, and flows through one side of the second outer liquid spray ring 42 to the other side of the second outer liquid spray ring 42.

[0074] like Figure 2 As shown, in some embodiments, the stator core 2 may have a first flow groove 21a and multiple first flow channels 20, and the multiple first flow channels 20 are connected to the first flow groove 21a so that the cooling liquid located in the first flow groove 21a can flow into the multiple first flow channels 20 respectively.

[0075] In addition, if Figure 2 As shown, a plurality of first flow channels 20 are arranged along the circumference of the stator core 2, and two adjacent first flow channels 20 are spaced apart. By providing a plurality of first flow channels 20 arranged along the circumference of the stator core 2, it is helpful to increase the liquid flow space of the first flow channels 20, and the stator core 2 can be evenly and fully cooled, thereby ensuring the cooling effect of the stator core 2.

[0076] like Figure 2As shown, the stator core 2 includes two first stator parts 22 and one second stator part 23. Along the axial direction of the stator core 2, the second stator part 23 is connected between the two first stator parts 22, and the two first stator parts 22 and one second stator part 23 jointly define a first flow slot 21a.

[0077] And combined with Figure 3 and Figure 4 As shown, in some embodiments, the first stator portion 22 includes a plurality of first stator punching sheets 210, which are composed of a plurality of first stator punching sheets 210 stacked in sequence, and the second stator portion 23 includes a plurality of second stator punching sheets 220, which are composed of a plurality of second stator punching sheets 220 stacked in sequence.

[0078] Combination Figure 3 and Figure 4 As shown, the outer diameter of the first stator sheet 210 is greater than the outer diameter of the second stator sheet 220, so that the outer diameter of the first stator portion 22 is greater than the outer diameter of the second stator portion 23. Figure 2 As shown, when the second stator portion 23 is connected between the two first stator portions 22 , the first flow channel 21 a is jointly defined.

[0079] like Figure 3 As shown, in some embodiments, the first stator punching sheet 210 is formed with a flow channel through hole 212, and combined with Figure 1 and Figure 2 As shown, two adjacent flow channel through holes 212 in the axial direction of the stator core 2 correspond to and are connected. Therefore, when a plurality of first stator punching sheets 210 are stacked to form a first stator portion 22, a plurality of flow channel through holes 212 connected in sequence constitute part of the first flow channel 20. In addition, the second stator portion 23 is connected between the two first stator portions 22 to form a first flow groove 21a, thereby achieving an effect of connecting the first flow channel 20 and the first flow groove 21a.

[0080] Combination Figure 2 and Figure 3 As shown, in some embodiments, a slot notch 211 is formed on the edge of the first stator punching sheet 210, so that when a plurality of first stator punching sheets 210 are stacked in sequence to form the first stator portion 22, the slot notches 211 of two adjacent first stator punching sheets 210 correspond to and are connected, so that an axial flow groove 21b is formed on the outer peripheral wall of the first stator portion 22, and the axial flow groove 21b extends along the axial direction of the stator core 2 and is connected to the first flow groove 21a, so that the cooling liquid in the first flow groove 21a can flow into the axial flow groove 21b.

[0081] It should be supplemented that, when the stator core 2 is assembled in the assembly space 12, the inner circumferential wall of the assembly space 12 blocks the open end of the axial flow groove 21b. It should also be supplemented that, in some embodiments of the utility model, taking the stator core 2 having two first stator parts 22 as an example, the axial flow groove 21b of one of the two first stator parts 22 is suitable for connecting the first flow groove 21a and the first spray hole 411, and the axial flow groove 21b of the other first stator part 22 is suitable for connecting the first flow groove 21a and the second spray hole 421. This can increase the flow rate of the cooling liquid flowing through the stator core 2, thereby further improving the cooling effect of the stator core 2.

[0082] In some embodiments, during the production of the stator core 2, the slot notch 211 is suitable for cooperating with the clamp for producing the stator core 2, so as to ensure that the multiple first stator punching sheets 210 are coaxial during the process of stacking the multiple first stator punching sheets 210 to form the first stator part 22, which can both improve production efficiency and reduce errors.

[0083] It should be noted that, in some embodiments of the present invention, the cooling liquid used to cool the motor 100 is constructed as cooling oil for example, but the present invention is not limited to this, and the cooling liquid can also be constructed as other liquids that can be used for the motor 100.

[0084] According to the motor 100 of the embodiment of the utility model, when the cooling liquid for cooling the motor 100 flows through the liquid inlet channel 11, the cooling liquid exchanges heat with the housing 1 to achieve the effect of cooling the housing 1, and then the cooling liquid flowing through the liquid inlet channel 11 can also flow into the first channel 20, so that when the cooling liquid flows through the first channel 20, it exchanges heat with the stator core 2 to achieve the effect of cooling the stator core 2.

[0085] In addition, the cooling liquid can also move to the stator winding 3 through the first outer spray ring 41, the second outer spray ring 42, the first inner spray ring 61 and the second inner spray ring 62 respectively, so as to achieve the effect of cooling the stator winding 3. In summary, according to the embodiment of the utility model, the motor 100 can cool the housing 1, the stator core 2 and the stator winding 3, so as to improve the heat dissipation performance of the motor 100 during the operation of the motor 100, effectively reduce the temperature of the motor 100, and ensure the working performance stability of the motor 100.

[0086] In some embodiments of the present invention, Figure 1 , Figure 6 and Figure 8As shown, one side of the first outer spray ring 41 and the inner circumferential wall of the stator core 2 and the assembly space 12 together define a second flow channel 410, one side of the second outer spray ring 42 and the inner circumferential wall of the stator core 2 and the assembly space 12 together define a third flow channel 420, the other side of the first outer spray ring 41 is formed with a first spray hole 411 open to the stator winding 3, the second flow channel 410 connects the first spray hole 411 and the first flow channel 20, one side of the second outer spray ring 42 is formed with a second spray hole 421 open to the stator winding 3, the third flow channel 420 connects the second spray hole 421 and the first flow channel 20, so that the cooling liquid flowing through the first flow channel 20 can flow to the first spray hole 411 and the second spray hole 421 through the second flow channel 410 and the third flow channel 420 respectively.

[0087] Combination Figure 1 As shown, along the radial direction of the first outer liquid spray ring 41, the outer side of the first outer liquid spray ring 41 and the inner circumferential wall of the stator core 2 and the assembly space 12 jointly define a second flow channel 410, and the inner side of the first outer liquid spray ring 41 is formed with a first liquid spray hole 411 open toward the stator winding 3. Along the radial direction of the second outer liquid spray ring 42, the outer side of the second outer liquid spray ring 42 and the inner circumferential wall of the stator core 2 and the assembly space 12 jointly define a second flow channel 410, and the inner side of the second outer liquid spray ring 42 is formed with a second liquid spray hole 421 open toward the stator winding 3.

[0088] In some embodiments of the present invention, Figure 5 and Figure 6 As shown, the first outer liquid spraying ring 41 includes a first ring portion 41a and a second ring portion 41b connected to each other. The outer diameter of the first ring portion 41a is smaller than the outer diameter of the second ring portion 41b, so that a first stepped groove 41c is formed on the outer peripheral wall of the first outer liquid spraying ring 41. The first stepped groove 41c is configured as at least a part of the second flow channel 410. Figure 7 and Figure 8 As shown, the second outer liquid spray ring 42 includes a third ring portion 42a and a fourth ring portion 42b connected to each other, and the outer diameter of the third ring portion 42a is smaller than the outer diameter of the fourth ring portion 42b, so that a second stepped groove 42c is formed on the outer peripheral wall of the second outer liquid spray ring 42, and the second stepped groove 42c is configured as at least a part of the third flow channel 420.

[0089] Combination Figure 1 , Figure 5 and Figure 6As shown, in some embodiments, when the first outer liquid spray ring 41 is assembled in the assembly space 12, in the axial direction of the stator core 2, the first ring portion 41a is arranged toward one side of the stator core 2, and the first ring portion 41a abuts against the stator core 2, and in the radial direction of the stator core 2, the second ring portion 41b also abuts against the shell 1 (that is, the second ring portion 41b abuts against the inner circumferential wall of the assembly space 12), so that when the first outer liquid spray ring 41 is assembled in the assembly space 12, the first outer liquid spray ring 41 and the stator core 2 and the inner circumferential wall of the assembly space 12 jointly define a second flow channel 410, and therefore the first step groove 41c is constructed as at least a part of the second flow channel 410.

[0090] Combination Figure 5 and Figure 6 As shown, in some embodiments, the first liquid spray hole 411 is provided in the first ring portion 41a, and in the radial direction of the first ring portion 41a, the first liquid spray hole 411 penetrates the first ring portion 41a, so that the first liquid spray hole 411 communicates with the outer peripheral wall of the first ring portion 41a and the inner peripheral wall of the first ring portion 41a. When the first outer liquid spray ring 41 is assembled in the assembly space 12, the first liquid spray hole 411 conducts the second flow channel 410, so that the cooling liquid in the second flow channel 410 can be sprayed toward the stator winding 3 through the first liquid spray hole 411.

[0091] Combination Figure 1 , Figure 7 and Figure 8 As shown, in some embodiments, when the second outer liquid spray ring 42 is assembled in the assembly space 12, in the axial direction of the stator core 2, the third ring portion 42a is arranged toward one side of the stator core 2, and the third ring portion 42a abuts against the stator core 2, and in the radial direction of the stator core 2, the fourth ring portion 42b also abuts against the shell 1 (that is, the fourth ring portion 42b abuts against the inner circumferential wall of the assembly space 12), so that when the second outer liquid spray ring 42 is assembled in the assembly space 12, the second outer liquid spray ring 42 and the stator core 2 and the inner circumferential wall of the assembly space 12 jointly define the third flow channel 420, and the second step groove 42c is constructed as at least a part of the third flow channel 420.

[0092] Combination Figure 7 and Figure 8 As shown, in some embodiments, the second liquid spray hole 421 is provided in the third ring portion 42a, and in the radial direction of the third ring portion 42a, the second liquid spray hole 421 penetrates the third ring portion 42a, so that the second liquid spray hole 421 is connected to the outer peripheral wall of the third ring portion 42a and the inner peripheral wall of the third ring portion 42a. When the second outer liquid spray ring 42 is assembled in the assembly space 12, the second liquid spray hole 421 is connected to the third flow channel 420, so that the cooling liquid in the third flow channel 420 can be sprayed toward the stator winding 3 through the second liquid spray hole 421.

[0093] In some embodiments of the present invention, Figure 7 and Figure 8 As shown, the second outer liquid spray ring 42 also has a first seal 422 and a second seal 423. Along the axial direction of the second outer liquid spray ring 42, the first seal 422 is arranged at one end of the third ring portion 42a away from the fourth ring portion 42b, and along the radial direction of the second outer liquid spray ring 42, the second seal 423 is arranged on the outer peripheral wall of the fourth ring portion 42b.

[0094] like Figure 7 and Figure 8 As shown, in some embodiments, along the axial direction of the second outer liquid spray ring 42, a first groove 424 is formed at one end of the third ring portion 42a away from the fourth ring portion 42b, and in the axial direction of the second outer liquid spray ring 42, the first groove 424 is recessed toward the inside of the third ring portion 42a in the direction from the third ring portion 42a to the fourth ring portion 42b, and the first seal 422 is suitable for being assembled in the first groove 424.

[0095] In addition, combined Figure 1 As shown, when the second outer spray ring 42 is assembled in the assembly space 12, the first groove 424 is arranged toward the stator core 2 along the axial direction of the second outer spray ring 42, so that when the second outer spray ring 42 is assembled with the shell 1 and the stator core 2, the first seal 422 abuts against the stator core 2 in the axial direction of the stator core 2, so that the first seal 422 is used to seal the gap between the stator core 2 and the second outer spray ring 42, thereby ensuring the sealing of the third flow channel 420 and avoiding leakage of the cooling liquid in the third flow channel 420. In this way, the liquid pressure in the third flow channel 420 can be stable, so that the cooling liquid in the third flow channel 420 can be sprayed toward the stator winding 3 through the second spray hole 421, thereby ensuring that the stator winding 3 is cooled by the cooling liquid.

[0096] like Figure 7 and Figure 8 As shown, in some embodiments, along the axial direction of the second outer liquid spray ring 42, the outer peripheral wall of the fourth ring portion 42b is formed with a second groove 425, and in the radial direction of the second outer liquid spray ring 42, the second groove 425 is recessed toward the interior of the fourth ring portion 42b, and the second seal 423 is suitable for being assembled in the second groove 425.

[0097] In addition, combined Figure 1As shown, when the second outer liquid spray ring 42 is assembled in the assembly space 12, the second groove 425 is arranged toward the shell 1 along the radial direction of the second outer liquid spray ring 42, so that when the second outer liquid spray ring 42 is assembled with the shell 1 and the stator core 2, the second seal 423 abuts against the inner circumferential wall of the shell 1 in the radial direction of the second outer liquid spray ring 42, so that the second seal 423 is used to seal the gap between the shell 1 and the second outer liquid spray ring 42, thereby ensuring the sealing of the third flow channel 420 and avoiding leakage of the cooling liquid in the third flow channel 420. In this way, the liquid pressure in the third flow channel 420 can be ensured to be stable, thereby ensuring that the cooling liquid in the third flow channel 420 is sprayed toward the stator winding 3 through the second liquid spray hole 421.

[0098] like Figure 7 and Figure 8 As shown, in some embodiments, the first seal 422 and the second seal 423 can be constructed as seals such as sealing strips, sealing rings, and sealants. In some embodiments of the present invention, taking the first seal 422 and the second seal 423 as sealing rings as an example, the first seal 422 is sleeved on the third ring portion 42a, and the second seal 423 is sleeved on the fourth ring portion 42b, so that when the second outer liquid spray ring 42 is assembled in the assembly space 12, it is convenient to assemble the first seal 422 in the assembly space 12 at the same time, so that the first seal 422 is abutted and sealed between the third ring portion 42a and the stator core 2, and it is convenient to assemble the second seal 423 in the assembly space 12, so that the second seal 423 is abutted and sealed between the fourth ring portion 42b and the inner circumferential wall of the shell 1.

[0099] In some embodiments of the present invention, Figure 1 , Fig.10 and Fig.12 As shown, a fourth flow channel 610 is formed in the first inner spray ring 61, a fifth flow channel 620 is formed in the second inner spray ring 62, a third spray hole 611 is formed on the other side of the first inner spray ring 61, the fourth flow channel 610 connects the liquid inlet flow channel 11 and the third spray hole 611, a fourth spray hole 621 is formed on the other side of the second inner spray ring 62, and the fifth flow channel 620 connects the liquid inlet flow channel 11 and the fourth spray hole 621, so that part of the cooling liquid in the liquid inlet flow channel 11 flows to the third spray hole 611 through the fourth flow channel 610, and part of the cooling liquid in the liquid inlet flow channel 11 flows to the fourth spray hole 621 through the fifth flow channel 620, and then the cooling liquid flows to the stator winding 3 through the third spray hole 611 and the fourth spray hole 621 respectively, so as to achieve the effect of cooling the stator winding 3.

[0100] In some embodiments, Figure 1As shown, along the axial direction of the first inner liquid spray ring 61, one side of the first inner liquid spray ring 61 is connected to the liquid inlet channel 11, and a third liquid spray hole 611 is formed on the other side of the first inner liquid spray ring 61. Along the axial direction of the second inner liquid spray ring 62, one side of the second inner liquid spray ring 62 is connected to the liquid inlet channel 11, and a fourth liquid spray hole 621 is formed on the other side of the second inner liquid spray ring 62.

[0101] In some embodiments of the present invention, Figure 1 As shown, along the radial direction of the stator core 2, the first inner spray ring 61 is located on the inner side of the first outer spray ring 41 and is spaced apart, one end of the stator winding 3 is located between the first inner spray ring 61 and the first outer spray ring 41, the second inner spray ring 62 is located on the inner side of the second outer spray ring 42 and is spaced apart, and the other end of the stator winding 3 is located between the second inner spray ring 62 and the second outer spray ring 42, so that the cooling liquid flowing through the first inner spray ring 61 and the first outer spray ring 41 cools one end of the stator winding 3, and the cooling liquid flowing through the second inner spray ring 62 and the second outer spray ring 42 cools the other end of the stator winding 3, thereby improving the cooling efficiency of the stator winding 3, which is beneficial to ensuring the performance of the motor 100.

[0102] In some embodiments of the present invention, Figure 1 , Figure 9-12 As shown, the third spray hole 611 and / or the fourth spray hole 621 are open toward the stator winding 3. It can also be understood that when the first inner spray ring 61 and the second inner spray ring 62 are assembled in the assembly space 12, the third spray hole 611 and the fourth spray hole 621 are both open toward the stator winding 3, or, one of the third spray hole 611 and the fourth spray hole 621 is open toward the stator winding 3.

[0103] In some embodiments, the third spray hole 611 and the fourth spray hole 621 are open toward the stator winding 3, so that the cooling liquid sprayed from the third spray hole 611 is directly sprayed to one end of the stator winding 3, and the cooling liquid sprayed from the fourth spray hole 621 is directly sprayed to the other end of the stator winding 3, so that the cooling liquid exchanges heat with the stator winding 3 to achieve the effect of cooling the stator winding 3.

[0104] In some embodiments, in combination Figure 1As shown, by arranging one end of the stator winding 3 between the first inner spray ring 61 and the first outer spray ring 41, and the first spray hole 411 is open toward the outer peripheral wall of one end of the stator winding 3, and the third spray hole 611 is open toward the inner peripheral wall of one end of the stator winding 3, the cooling liquid sprayed through the first spray hole 411 flows through the outer peripheral wall of one end of the stator winding 3, and the cooling liquid sprayed through the third spray hole 611 flows through the inner peripheral wall of one end of the stator winding 3, thereby realizing simultaneous cooling from the outside and the inside of one end of the stator winding 3, thereby improving the cooling efficiency of the stator winding 3, which is beneficial to ensuring the performance of the motor 100.

[0105] In some embodiments of the present invention, Figure 1 As shown, the motor 100 also includes a first balance plate 71 and a second balance plate 72. The first balance plate 71 and the second balance plate 72 are respectively fixed at both ends of the rotor 8 of the motor 100. Along the axial direction of the rotor 8, the first inner liquid spray ring 61 is arranged opposite to the first balance plate 71, and the third liquid spray hole 611 faces the first balance plate 71. The second inner liquid spray ring 62 is arranged opposite to the second balance plate 72, and the fourth liquid spray hole 621 faces the second balance plate 72.

[0106] Since the first balancing plate 71 and the second balancing plate 72 are respectively fixed at the two ends of the rotor 8 of the motor 100, during the process of the rotor 8 rotating around its own axis, the first balancing plate 71 and the second balancing plate 72 rotate with the rotor 8, and the third spray hole 611 is opened toward the first balancing plate 71, and the fourth spray hole 621 is opened toward the second balancing plate 72, so that the cooling liquid sprayed from the third spray hole 611 is sprayed toward the first balancing plate 71, and the cooling liquid sprayed from the fourth spray hole 621 is sprayed toward the second balancing plate 72. In addition, since the first balancing plate 71 and the second balancing plate 72 both rotate with the rotor 8, the first balancing plate 71 and the second balancing plate 72 swing the cooling liquid to the stator winding 3, so that the cooling liquid exchanges heat with the stator winding 3, thereby achieving the effect of cooling the stator winding 3.

[0107] It should also be noted that, since the first balancing plate 71 and the second balancing plate 72 rotate to swing the cooling liquid to the stator winding 3, such a configuration can also increase the heat exchange surface between the cooling liquid and the stator winding 3, while also improving the heat exchange uniformity.

[0108] When the cooling liquid flows through the first balancing plate 71 and the second balancing plate 72 , the cooling liquid can also indirectly exchange heat with the rotor 8 through the first balancing plate 71 and the second balancing plate 72 , respectively, thereby achieving the effect of cooling the rotor 8 .

[0109] In some embodiments, by respectively providing a first balancing plate 71 and a second balancing plate 72 at both ends of the rotor 8 of the motor 100, it is helpful to adjust the dynamic balance of the rotor 8, improve the stability of the rotor 8 during rotation, and reduce the risk of vibration of the motor 100.

[0110] In some embodiments of the present invention, Fig.13 and 14 As shown, a first liquid collecting groove 711 and a plurality of first liquid-spinning grooves 712 are formed on one side surface of the first balancing plate 71 facing the third liquid spray hole 611, and the first liquid collecting groove 711 and the plurality of first liquid-spinning grooves 712 are both recessed toward the interior of the first balancing plate 71, and the plurality of first liquid-spinning grooves 712 are sequentially arranged and spaced around the edge of the first liquid collecting groove 711, and a second liquid collecting groove and a plurality of second liquid-spinning grooves are formed on one side surface of the second balancing plate 72 facing the fourth liquid spray hole 621, and the second liquid collecting groove and the plurality of second liquid-spinning grooves are both recessed toward the interior of the second balancing plate 72, and the plurality of second liquid-spinning grooves are sequentially arranged and spaced around the edge of the second liquid collecting groove.

[0111] In some embodiments, in combination Figure 1 , Fig.13 and Fig.14 As shown, when the first inner liquid spray ring 61 is assembled in the assembly space 12, the third liquid spray hole 611 is arranged opposite to the first balance plate 71 along the axial direction of the first inner liquid spray ring 61, and the third liquid spray hole 611 can be opened toward the first liquid collecting groove 711, so that the cooling liquid sprayed from the third liquid spray hole 611 is sprayed to the first liquid collecting groove 711, and during the rotation of the first balance plate 71, the cooling liquid in the first liquid collecting groove 711 is thrown to the multiple first liquid throwing grooves 712, and then moves toward the stator winding 3 through the first liquid throwing grooves 712, so that the cooling liquid exchanges heat with the stator winding 3, thereby achieving the effect of cooling the stator winding 3.

[0112] When the second inner liquid spray ring 62 is assembled in the assembly space 12, the fourth liquid spray hole 621 is arranged opposite to the second balance plate 72 along the axial direction of the second inner liquid spray ring 62, and the second liquid spray hole 421 can be opened toward the second liquid collecting tank, so that the cooling liquid sprayed from the second liquid spray hole 421 is sprayed to the second liquid collecting tank, and during the rotation of the second balance plate 72, the cooling liquid in the second liquid collecting tank is swung to a plurality of second liquid swung tanks, and then moves toward the stator winding 3 through the second liquid swung tank, so that the cooling liquid exchanges heat with the stator winding 3, thereby achieving the effect of cooling the stator winding 3.

[0113] In some embodiments, the first balancing board 71 and the second balancing board 72 have the same structure.

[0114] In some embodiments, the first balance board 71 and the second balance board 72 can be made of materials such as plastic and metal.

[0115] In some embodiments of the present invention, Figure 1 As shown, the motor 100 also includes a first bearing 101 and a second bearing 102, and the first bearing 101 and the second bearing 102 are both assembled on the housing 1, and the first bearing 101 and the second bearing 102 are respectively sleeved on both ends of the motor shaft 9 of the motor 100, so that the motor shaft 9 can be rotatably assembled on the housing 1, and the liquid inlet channel 11 is formed with a first injection port 13 and a second injection port 14, the first injection port 13 faces the first bearing 101, and the second injection port 14 faces the second bearing 102, so that the cooling liquid is sprayed to the first bearing 101 through the first injection port 13, and the cooling liquid is sprayed to the second bearing 102 through the second injection port 14, so as to achieve the effect of cooling the first bearing 101 and the second bearing 102, and at the same time, it can also play a role in lubricating the first bearing 101 and the second bearing 102.

[0116] In some embodiments of the present invention, the motor shaft 9 is a hollow shaft, so that the mass of the motor shaft 9 can be reduced, which is beneficial to achieving lightweight of the motor 100.

[0117] In some embodiments of the present invention, Figure 1 As shown, the shell 1 includes a shell body 15 and an end cover 16. An assembly groove 150 is formed in the shell body 15. When the end cover 16 is fixedly matched with the shell body 15, the open end of the assembly groove 150 is covered, so that the end cover 16 and the shell body 15 jointly define an assembly space 12. The components assembled in the assembly space 12 (for example: the stator core 2, etc.) can be installed in the assembly space 12 through the open end of the assembly groove 150.

[0118] The liquid inlet channel 11 includes a main channel 111, a first branch channel 112 and a second branch channel 113. The main channel 111 and the first branch channel 112 are connected and are both arranged in the shell wall of the shell body 15. The second branch channel 113 is arranged in the shell wall of the end cover 16. The second branch channel 113 is connected to the main channel 111. The cooling liquid in the main channel 111 is divided by the first branch channel 112 and the second branch channel 113. The cooling liquid can flow into the first inner spray ring 61 and the first injection port 13 through the first branch channel 112. In addition, the cooling liquid can also flow into the second inner spray ring 62 and the second injection port 14 through the second branch channel 113.

[0119] In addition, it should be noted that by arranging the liquid inlet channel 11 in the shell wall of the shell 1, that is, the main channel 111 and the first branch channel 112 are arranged in the shell wall of the shell body 15, and the second branch channel 113 is arranged in the shell wall of the end cover 16, not only can the shell 1 be cooled, but also the liquid inlet channel 11 is arranged in the shell wall of the shell 1, and there is no need to set up additional pipes for the flow of cooling liquid, which is conducive to reducing the overall size of the motor 100.

[0120] Combination Figure 1 , Figure 5 and Figure 6 As shown, in some embodiments, when the first outer liquid spray ring 41 is assembled in the assembly space 12, in the axial direction of the first outer liquid spray ring 41, the first outer liquid spray ring 41 is located between the shell body 15 and the stator core 2, and the first outer liquid spray ring 41 is in contact with both the shell body 15 and the stator core 2, and the first outer liquid spray ring 41 is also interference fit with the stator core 2, so that the first outer liquid spray ring 41 is reliably assembled in the assembly space 12, and the first outer liquid spray ring 41 and the stator core 2 and the inner circumferential wall of the assembly space 12 jointly define a second flow channel 410.

[0121] Combination Figure 1 , Figure 7 and Figure 8 As shown, in some embodiments, the second outer liquid spray ring 42 has at least one first mounting portion 426, and the first mounting portion 426 is suitable for fixedly matching with the shell body 15, so that the second outer liquid spray ring 42 is fixedly assembled in the assembly space 12. Figure 7 and Figure 8 As shown, the second outer liquid spray ring 42 has a plurality of first mounting portions 426, which are all provided on the second ring portion 41b, and the plurality of first mounting portions 426 are arranged along the circumference of the second ring portion 41b, and two adjacent first mounting portions 426 are spaced apart. By providing a plurality of first mounting portions 426, the second outer liquid spray ring 42 can be reliably assembled in the assembly space 12.

[0122] Combination Figure 1 , Fig. 9 and Fig.10 As shown, in some embodiments, the first inner liquid spray ring 61 has at least one second mounting portion 612, and the second mounting portion 612 is suitable for fixedly matching with the shell body 15, so that the first inner liquid spray ring 61 is fixedly assembled in the assembly space 12. Fig. 9 and Fig.10 As shown, the first inner liquid spray ring 61 has a plurality of second mounting portions 612, and the plurality of second mounting portions 612 are arranged along the circumference of the first inner liquid spray ring 61, and two adjacent second mounting portions 612 are spaced apart. By providing a plurality of second mounting portions 612, the first inner liquid spray ring 61 can be reliably assembled in the assembly space 12.

[0123] Combination Figure 1 , Fig.11 and Fig.12 As shown, in some embodiments, the second inner liquid spray ring 62 has at least one third mounting portion 622, and the third mounting portion 622 is suitable for fixedly matching with the shell body 15 and / or the end cover 16. It can also be understood that the third mounting portion 622 is suitable for fixedly matching with one of the shell body 15 and the end cover 16, or the third mounting portion 622 is suitable for fixedly matching with both the shell body 15 and the end cover 16, so that the second inner liquid spray ring 62 is fixedly assembled in the assembly space 12. Fig.11 and Fig.12 As shown, the second inner liquid spray ring 62 has a plurality of third mounting portions 622, and the plurality of third mounting portions 622 are arranged along the circumference of the second inner liquid spray ring 62, and two adjacent third mounting portions 622 are spaced apart. By providing a plurality of third mounting portions 622, the second inner liquid spray ring 62 can be reliably assembled in the assembly space 12.

[0124] In some embodiments, the first outer liquid spray ring 41 has at least one first liquid spray hole 411. In some embodiments of the present invention, taking the first outer liquid spray ring 41 having sixteen first liquid spray holes 411 as an example, the plurality of first liquid spray holes 411 are sequentially arranged along the circumference of the first outer liquid spray ring 41.

[0125] In some embodiments, the second outer liquid spray ring 42 has at least one second liquid spray hole 421. In some embodiments of the present invention, taking the second outer liquid spray ring 42 having sixteen second liquid spray holes 421 as an example, the plurality of second liquid spray holes 421 are sequentially arranged along the circumference of the second outer liquid spray ring 42.

[0126] In some embodiments, the first inner liquid spraying ring 61 has at least one third liquid spraying hole 611. In some embodiments of the present invention, taking the first inner liquid spraying ring 61 having eight third liquid spraying holes 611 as an example, the plurality of third liquid spraying holes 611 are sequentially arranged along the circumference of the first inner liquid spraying ring 61.

[0127] In some embodiments, the second inner liquid spraying ring 62 has at least one fourth liquid spraying hole 621. In some embodiments of the present invention, taking the second inner liquid spraying ring 62 having eight fourth liquid spraying holes 621 as an example, the plurality of fourth liquid spraying holes 621 are sequentially arranged along the circumference of the second inner liquid spraying ring 62.

[0128] According to the motor 100 of the utility model, a liquid inlet channel 11 is provided inside the shell 1, and the shell 1, the stator core 2 and the first outer liquid spray ring 41 jointly define the second flow channel 410, the shell 1, the stator core 2 and the second outer liquid spray ring 42 jointly define the third flow channel 420, and a first inner liquid spray ring 61 and a second inner liquid spray ring 62 are also provided, and the shell 1 has a first injection port 13 and a second injection port 14, so that the shell 1, the stator core 2, the stator winding 3, the first bearing 101 and the second bearing 102 can be cooled, the cooling effect of the motor 100 is good, the heat dissipation efficiency is high, the temperature rise of the motor 100 is effectively reduced, and the working efficiency of the motor 100 is improved, and the shell 1 has a simple structure and is easy to process, and the first outer liquid spray ring 41, the second outer liquid spray ring 42, the first inner liquid spray ring 61 and the second inner liquid spray ring 62 are small in size, which can reduce the volume of the motor 100 and reduce the weight.

[0129] In the description of the present invention, it is necessary to understand that the terms "inner", "outer", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0130] In the description of the present invention, "plurality" means two or more.

[0131] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0132] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0133] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0134] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that: include: A housing, wherein the housing is formed with a liquid inlet channel, and the housing defines an assembly space communicating with the liquid inlet channel; A stator core, wherein a first flow groove is formed on an outer peripheral wall of the stator core, the outer peripheral wall of the stator core abuts against an inner peripheral wall of the assembly space, and the first flow groove is communicated with the liquid inlet flow channel, and the stator core further forms a first flow channel communicated with the first flow groove; A first outer liquid spray ring, a second outer liquid spray ring, a first inner liquid spray ring, and a second inner liquid spray ring assembled in the assembly space, wherein along the axial direction of the stator core, the first outer liquid spray ring and the first inner liquid spray ring are both located at one end of the stator core, and the second outer liquid spray ring and the second inner liquid spray ring are both located at the other end of the stator core; One side of the first outer liquid spray ring and one side of the second outer liquid spray ring are both connected to the first flow channel, and the other side of the first outer liquid spray ring and the other side of the second outer liquid spray ring are both open to the stator winding assembled on the stator core; One side of the first inner liquid spray ring and one side of the second inner liquid spray ring are both connected to the liquid inlet channel, and the liquid flowing through the other side of the first inner liquid spray ring and the liquid flowing through the other side of the second inner liquid spray ring are suitable for flowing to the stator winding.

2. The motor according to claim 1, characterized in that One side of the first outer spray ring, the stator core and the inner circumferential wall of the assembly space together define a second flow channel, one side of the second outer spray ring, the stator core and the inner circumferential wall of the assembly space together define a third flow channel, a first spray hole open to the stator winding is formed on the other side of the first outer spray ring, the second flow channel connects the first spray hole and the first flow channel, a second spray hole open to the stator winding is formed on the other side of the second outer spray ring, and the third flow channel connects the second spray hole and the first flow channel.

3. The motor according to claim 2, characterized in that The first outer liquid spraying ring comprises a first ring portion and a second ring portion connected to each other, the outer diameter of the first ring portion is smaller than the outer diameter of the second ring portion, so that a first stepped groove is formed on the outer peripheral wall of the first outer liquid spraying ring, and the first stepped groove is configured as at least a part of the second flow channel; The second outer liquid spray ring includes a third ring portion and a fourth ring portion connected to each other, the outer diameter of the third ring portion is smaller than the outer diameter of the fourth ring portion, so that a second stepped groove is formed on the outer peripheral wall of the second outer liquid spray ring, and the second stepped groove is configured as at least a part of the third flow channel.

4. The motor according to claim 3, characterized in that The second outer liquid spray ring also has a first seal and a second seal. Along the axial direction of the second outer liquid spray ring, the first seal is arranged at an end of the third ring portion away from the fourth ring portion, and along the radial direction of the second outer liquid spray ring, the second seal is arranged on the outer peripheral wall of the fourth ring portion.

5. The motor according to claim 1, characterized in that A fourth flow channel is formed in the first inner spray ring, a fifth flow channel is formed in the second inner spray ring, a third spray hole is formed on the other side of the first inner spray ring, the fourth flow channel connects the liquid inlet flow channel and the third spray hole, a fourth spray hole is formed on the other side of the second inner spray ring, and the fifth flow channel connects the liquid inlet flow channel and the fourth spray hole.

6. The motor according to claim 1, characterized in that Along the radial direction of the stator core, the first inner liquid spray ring is located on the inner side of the first outer liquid spray ring and is spaced apart, and one end of the stator winding is located between the first inner liquid spray ring and the first outer liquid spray ring; the second inner liquid spray ring is located on the inner side of the second outer liquid spray ring and is spaced apart, and the other end of the stator winding is located between the second inner liquid spray ring and the second outer liquid spray ring.

7. The motor according to claim 5, characterized in that The third liquid spraying hole and / or the fourth liquid spraying hole are open toward the stator winding.

8. The motor according to claim 5, characterized in that Also includes: A first balancing plate and a second balancing plate, wherein the first balancing plate and the second balancing plate are respectively fixedly arranged at two ends of the rotor of the motor; Along the axial direction of the rotor, the first inner liquid spray ring is arranged opposite to the first balance plate, and the third liquid spray hole faces the first balance plate, and the second inner liquid spray ring is arranged opposite to the second balance plate, and the fourth liquid spray hole faces the second balance plate.

9. The motor according to claim 8, characterized in that A first liquid collecting groove and a plurality of first liquid-spinning grooves are formed on a surface of the first balance plate facing the third liquid spray hole. The first liquid collecting groove and the plurality of first liquid-spinning grooves are both recessed toward the inside of the first balance plate. The plurality of first liquid-spinning grooves are sequentially arranged around the first liquid collecting groove along the edge of the first liquid collecting groove and are spaced apart. A second liquid collecting groove and a plurality of second liquid throwing grooves are formed on one side surface of the second balancing plate facing the fourth liquid spray hole. The second liquid collecting groove and the plurality of second liquid throwing grooves are both recessed toward the inside of the second balancing plate. The plurality of second liquid throwing grooves are arranged in sequence and spaced apart along the edge of the second liquid collecting groove and around the second liquid collecting groove.

10. The motor according to claim 1, characterized in that Also includes: A first bearing and a second bearing, wherein the first bearing and the second bearing are both assembled on the housing, and the first bearing and the second bearing are respectively sleeved on both ends of the motor shaft of the motor; The liquid inlet flow channel is formed with a first injection port and a second injection port, wherein the first injection port faces the first bearing, and the second injection port faces the second bearing.

11. The motor according to any one of claims 1 to 10, characterized in that: The shell comprises a shell body and an end cover, wherein an assembly groove is formed in the shell body, and the end cover covers the open end of the assembly groove when fixedly matched with the shell body to jointly define the assembly space; The liquid inlet channel includes a main channel, a first branch channel and a second branch channel. The main channel and the first branch channel are connected and are both arranged in the shell wall of the shell body. The second branch channel is arranged in the shell wall of the end cover part, and the second branch channel is connected to the main channel.

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