CN220342140U - Motor and vehicle with same - Google Patents

Abstract

The application discloses a motor and have vehicle of this motor. The motor includes: the stator comprises a shell, a stator core, a stator winding and a guide ring, wherein the shell is provided with a medium inlet and a medium channel, and an installation cavity is formed in the shell; the stator core is arranged on the inner cavity wall of the mounting cavity, a stator groove and a core runner are formed in the stator core, and the core runner is communicated with the medium channel; the stator winding is embedded in the stator slot, and the outlet of the iron core runner is arranged opposite to the stator winding; a diversion trench is formed between the diversion ring and the inner cavity wall of the installation cavity, the diversion trench is communicated with the medium channel, a diversion ring hole communicated with the diversion trench is arranged on the diversion ring, and an outlet of the diversion ring hole is arranged opposite to the stator winding. According to the motor, double heat exchange can be carried out on the stator winding through the iron core runner on the stator iron core and the guide ring at the outer end of the stator iron core shaft, and the double heat exchange efficiency of the stator winding can be improved, so that the stator winding is in a proper temperature range as soon as possible.

Description

Motor and vehicle with same

Technical Field

The application relates to the technical field of vehicles, in particular to a motor and a vehicle with the motor.

Background

In the related art, most of stator windings of the oil-cooled motor adopt single axial oil injection heat exchange or single radial oil injection heat exchange, and although lubricating oil in the two heat exchange modes can be in direct contact with the winding end part, the heat exchange efficiency of the single heat exchange mode is low, and meanwhile, the temperature of a stator core cannot be adjusted in time, so that the working performance of the stator core is influenced.

Disclosure of Invention

The present application aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the application provides a motor which can exchange heat for the stator winding in a double way and can exchange heat for the stator core.

The application also provides a vehicle with the motor.

The motor according to the embodiment of the application comprises: the stator comprises a shell, a stator core, a stator winding and a guide ring, wherein a medium inlet and a medium channel communicated with the medium inlet are arranged on the shell wall of the shell, and an installation cavity is formed in the shell; the stator core is arranged on the inner cavity wall of the mounting cavity, a stator groove and a core runner are formed in the stator core, and an inlet of the core runner is communicated with the medium channel; the stator winding is embedded in the stator slot, and an outlet of the iron core runner is arranged opposite to the stator winding; the guide ring is arranged on the shell and positioned at the axial outer end of the stator core, a guide groove is formed between the guide ring and the inner cavity wall of the installation cavity, the guide groove is communicated with the medium channel, a guide ring hole communicated with the guide groove is formed in the guide ring, and an outlet of the guide ring hole is opposite to the stator winding.

According to the motor provided by the embodiment of the application, the iron core runner is arranged on the stator core, the heat exchange medium can exchange heat with the stator winding after flowing through the stator core, and the heat exchange medium can exchange heat with the stator core, so that the temperature of the stator core can be improved.

According to some embodiments of the present application, the stator winding includes a body portion and an extension portion connected with the body portion, the body portion is embedded in the stator slot, the extension portion with the body portion links to each other and is located the axial outer end of stator core, the export of iron core runner is seted up on the axial terminal surface of stator core, the export of iron core runner with the extension portion sets up relatively, the export of water conservancy diversion annular ring hole with the radial of extension portion sets up relatively.

Optionally, the extension portion includes first extension portion and second extension portion, first extension portion with body portion links to each other and is located stator core's axial one end, the second extension portion with body portion links to each other and is located stator core's axial other end, the iron core runner has first export and second export, the first export of iron core runner with first extension portion sets up relatively, the second export of iron core runner with second extension portion sets up relatively.

According to some embodiments of the present application, the core runner includes an inlet runner and an outlet runner, the inlet runner is in communication with the medium channel and the inlet runner extends radially of the stator core, the outlet runner is in communication with the inlet runner and the outlet runner extends axially of the stator core, and the outlet of the outlet runner is opposite to the extension portion.

According to some embodiments of the present application, one or more of the inlet channels are provided along the circumferential direction of the stator core, and the outlet channels are in one-to-one correspondence with the inlet channels.

According to some embodiments of the present application, a distance between the outflow channel and the stator slot is smaller than a distance between the outflow channel and an outer circumferential surface of the stator core.

According to some embodiments of the present application, the stator core includes: the inlet flow channel is formed in the first iron core; the second iron cores are arranged on two axial sides of the first iron core, and the outflow channel comprises second iron core sections which are arranged on the second iron cores.

According to some embodiments of the present application, the motor further comprises a drainage core, the first core and the second core on each side are arranged between the drainage core, the outflow channel further comprises a drainage core section arranged on the drainage core, the outer diameter of the drainage core is smaller than that of the second core, and the outer diameter of the first core is not larger than that of the drainage core.

According to some embodiments of the present application, the motor further comprises an end iron core, the end iron core is arranged on one side, deviating from the first iron core, of the second iron core, a speed increasing hole is formed in the end iron core, the speed increasing hole is communicated with the outflow channel, and the cross-sectional area of the speed increasing hole is smaller than that of the outflow channel.

According to some embodiments of the present application, the first iron core, the drainage iron core, the second iron core and any two adjacent iron cores in the tip iron core are welded and fixed, the first iron core, the drainage iron core, the second iron core and the periphery of the tip iron core are all equipped with the edge the many welding grooves of the axial extension of stator core, just the many welding grooves of the first iron core the many welding grooves of drainage iron core the many welding grooves of the second iron core with the many welding grooves of the tip iron core are followed the axial alignment of stator core.

According to some embodiments of the present application, the two axial ends of the stator core are both provided with the guide rings, and the guide rings are located radially outside the extension portion.

According to some embodiments of the application, the motor further comprises: the rotary shaft is rotatably supported by the shell, the rotor core is mounted on the rotary shaft and can synchronously rotate along with the rotary shaft, the stator core is of a cylindrical structure, and the rotor core is sleeved inside the stator core.

According to another aspect of the application, a vehicle includes the motor.

According to the vehicle of the embodiment of the application, the motor that it includes is through seting up the iron core runner on stator core, and heat transfer medium can flow through behind the stator core with stator winding carries out the heat transfer, and heat transfer medium can also be favorable to improving stator core's temperature with stator core heat transfer, in addition, through set up the water conservancy diversion ring at stator core's axial outer end, heat transfer medium can carry out the heat transfer with stator winding after the water conservancy diversion ring, like this, double heat transfer can improve the heat transfer efficiency to stator winding, makes stator winding be in suitable temperature range as soon as possible.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

Fig. 1 is a perspective schematic view of an electric motor according to an embodiment of the present application;

FIG. 2 is a schematic cut-away front view of an electric motor according to an embodiment of the present application;

FIG. 3 is a cut-away schematic perspective view of an electric motor according to an embodiment of the present application;

FIG. 4 is a schematic diagram of an assembly of a stator winding, a first baffle ring, and a second baffle ring;

fig. 5 is a schematic view of a first core;

FIG. 6 is a schematic view of a drainage core;

fig. 7 is a schematic view of a second core;

FIG. 8 is a schematic view of an end core;

fig. 9 is a schematic side view of a stator core;

FIG. 10 is a schematic view of a portion of a stator core in section;

FIG. 11 is a schematic diagram of an assembly of a first core with two side drainage cores;

FIG. 12 is a partial schematic view of a first core and a drainage core;

fig. 13 is a perspective view of a stator core.

Reference numerals:

the motor 10, the housing 1, the medium inlet 11, the medium passage 12, the mounting chamber 13, the housing body 14, the end cap 15, the core communication hole 16, the first flow guide communication hole 17, the second flow guide communication hole 18, the stator core 2, the core flow passage 22, the inlet flow passage 221, the first outlet flow section 222, the second outlet flow section 223, the first outlet 23, the second outlet 24, the first core 25, the first welding groove 251, the first flow passage hole 252, the first stator groove 253, the drainage core 26, the drainage welding groove 261, the drainage flow passage hole 262, the drainage stator groove 263, the second core 27, the second welding groove 271, the second flow passage hole 272, the second stator groove 273, the end core 28, the end welding groove 281, the end flow passage hole 282, the end stator groove 283, the stator winding 3, the first outer extension 31, the second outer extension 32, the body portion 33, the rotating shaft 4, the first bearing 41, the second bearing 42, the return passage 5, the first return chamber 51, the second return chamber 52, the first guide ring 6, the first guide groove 61, the first guide ring 62, the second guide ring 7, the second guide ring 71, the second guide ring 72, the cage 8, and the cage 8.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present application and are not to be construed as limiting the present application.

An electric machine 10 according to an embodiment of the present application is described in detail below in connection with fig. 1-13.

Referring to fig. 1-3, an electric machine 10 according to an embodiment of the present application may include: the stator comprises a shell 1, a stator core 2, a stator winding 3 and a guide ring.

1-3, a medium inlet 11 and a medium channel 12 are arranged on the wall of the shell 1, the medium channel 12 is communicated with the medium inlet 11, and heat exchange medium can enter the medium channel 12 through the medium inlet 11. The housing 1 has a mounting cavity 13 inside.

In the specific example shown in fig. 1 to 3, the housing 1 may include a housing body 14 and an end cap 15, the housing body 14 is configured in a cylindrical structure having one end opened and the other end closed, the end cap 15 is located at the one end opening of the housing body 14, and the end cap 15 and the housing body 14 may be connected by a fastener. Alternatively, the fasteners may be bolts, screws, or the like, which facilitate assembly and disassembly. In other embodiments not shown in the drawings, the housing 1 may include a housing body 14, a first end cap and a second end cap, the housing body 14 is configured as a cylindrical structure with two open ends, the first end cap is located at an opening at one end of the housing body 14, the second end cap is located at an opening at the other end of the housing body 14, the first end cap and the housing body 14 may be connected by a first fastener, the second end cap and the housing body 14 may be connected by a second fastener, and the installation cavity 13 is defined by the housing body 14, the first end cap and the second end cap together. Alternatively, the first fastener, the second fastener may be a bolt, a screw, or the like, which facilitates the assembly and disassembly.

Referring to fig. 2-3, the stator core 2 is mounted on the inner cavity wall of the mounting cavity 13, and the stator core 2 and the inner cavity wall of the mounting cavity 13 can be in interference fit. Stator groove and iron core runner 22 have been seted up on the stator core 2, and the import of iron core runner 22 is linked together with medium passageway 12. The stator slots are plural, and the plural stator slots are distributed along the circumferential direction of the stator core 2.

The stator winding 3 is embedded in the stator slot, and the outlet of the iron core runner 22 is opposite to the stator winding 3. In this way, the heat exchange medium in the medium passage 12 can flow into the core flow passage 22 and then flow from the outlet of the core flow passage 22 to the stator winding 3. When the stator winding 3 needs to be cooled, the heat exchange medium is a cooling medium, and the cooling medium can take away the heat of the stator winding 3 after reaching the stator winding 3, so that the stator winding 3 is cooled, and the working performance reduction caused by the overhigh working temperature of the stator winding 3 is avoided. The outlet of the iron core runner 22 is opposite to the stator winding 3, so that the heat exchange medium flowing out of the outlet of the iron core runner 22 can directly reach the stator winding 3, thereby shortening the heat exchange path and saving the heat exchange time.

The guide ring is arranged on the shell 1, the guide ring is arranged at the axial outer end of the stator core 2, a guide groove is formed between the guide ring and the inner cavity wall of the installation cavity 13, the guide groove is communicated with the medium channel 12, a guide ring hole communicated with the guide groove is formed in the guide ring, an outlet of the guide ring hole is opposite to the stator winding 3, heat exchange medium in the medium channel 12 can flow into the guide groove, and then flows into the stator winding 3 from the guide ring hole.

A channel wall of the medium channel 12 is arranged between the medium channel 12 and the mounting cavity 13, an iron core communication hole 16 and a diversion communication hole are formed in the channel wall of the medium channel 12, the iron core communication hole 16 and the diversion communication hole penetrate through the channel wall along the thickness direction, the diversion trench is communicated with the medium channel 12 through the diversion communication hole, and heat exchange medium in the medium channel 12 can flow into the diversion trench through the diversion communication hole; the inlet of the core flow passage 22 is communicated with the medium passage 12 through the core communication hole 16, and the heat exchange medium in the medium passage 12 can flow into the core flow passage 22 through the core communication hole 16.

Referring to fig. 3, a return channel 5 is provided on the wall of the housing 1, a channel wall of the return channel 5 is provided between the return channel 5 and the installation cavity 13, the channel wall of the return channel 5 is provided with a return cavity, the installation cavity 13 is communicated with the return channel 5 through the return cavity, and the axis of the motor 10 is horizontally or approximately horizontally arranged when the motor 10 is actually installed, so that the return channel 5 is positioned at the bottom of the whole motor 10, heat exchange medium impacting the stator winding 3 can be gathered at the bottom of the installation cavity 13 under the action of gravity, and the return cavity is provided at the bottom of the installation cavity 13, so that part of heat exchange medium can enter the return cavity and further enter the return channel 5 through the return cavity. The heat exchange medium recovered in the return passage 5 can be discharged to the outside of the casing 1 and can be further recycled.

The return chamber may comprise a first return chamber 51 and a second return chamber 52, through which first return chamber 51 and second return chamber 52 excess heat exchange medium in the installation chamber 13 can enter the return channel 5. The first return chamber 51 is located outside one axial end of the stator core 2, and the second return chamber 52 is located outside the other axial end of the stator core 2.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

According to the motor 10 of the embodiment of the application, through the iron core runner 22 arranged on the stator core 2, heat exchange medium can exchange heat with the stator winding 3 after flowing through the stator core 2, and the heat exchange medium can exchange heat with the stator core 2, so that the temperature of the stator core 2 can be improved.

Alternatively, the heat exchange medium may be a liquid or a gas, and the structure of the motor 10 of the present application will be described below by taking the heat exchange medium as a cooling liquid for convenience of description.

In some embodiments of the present application, referring to fig. 2-3, the stator winding 3 includes a body portion 33 and an extension portion, the extension portion is connected to the body portion 33, the body portion 33 is embedded in the stator slot, the extension portion is connected to the body portion 33, and the extension portion is located at an axially outer end of the stator core 2, an outlet of the core runner 22 is opened on an axial end face of the stator core 2, and the outlet of the core runner 22 is opposite to the extension portion, in other words, the outlet of the core runner 22 is opposite to the extension portion, so that a path between the outlet of the core runner 22 and the extension portion is shorter, and the cooling liquid flowing from the core runner 22 can be directly sprayed onto the extension portion to cool the extension portion.

The outlet of the guide ring hole is arranged opposite to the radial direction of the extension part, so that a path between the outlet of the guide ring hole and the extension part is short, and the cooling liquid sprayed from the outlet of the guide ring hole can be sprayed to the extension part along the radial direction to cool the extension part from the radial direction.

Alternatively, referring to fig. 2 to 3, the extension portion may include a first extension portion 31 and a second extension portion 32, the first extension portion 31 is connected to the body portion 33, the first extension portion 31 is located at one axial end of the stator core 2, the second extension portion 32 is connected to the body portion 33, the second extension portion 32 is located at the other axial end of the stator core 2, the core runner 22 has a first outlet 23 and a second outlet 24, the first outlet 23 of the core runner 22 is disposed opposite to the first extension portion 31, the second outlet 24 of the core runner 22 is disposed opposite to the second extension portion 32, in other words, the first outlet 23 of the core runner 22 is opposite to the first extension portion 31, the second outlet 24 of the core runner 22 is opposite to the second extension portion 32, so that a path between the first outlet 23 of the core runner 22 and the first extension portion 31 is shorter, a cooling liquid flowing out from the first outlet 23 of the core runner 22 can be sprayed directly onto the first extension portion 31, in other words, the second outlet 24 of the core runner 22 can be sprayed directly onto the second extension portion 32.

In some embodiments of the present application, referring to fig. 3 and 9-10, the core runner 22 may include an inlet runner 221 and an outlet runner, where the inlet runner 221 is in communication with the medium channel 12 and the inlet runner 221 extends along a radial direction of the stator core 2, the outlet runner is in communication with the inlet runner 221 and the outlet runner extends along an axial direction of the stator core 2, and an outlet of the outlet runner faces the extension part. The cooling liquid in the medium channel 12 can enter the inlet channel 221, further enter the outlet channel, and finally be sprayed to the extension part.

It is understood that "extending radially of the stator core 2" in the present application may refer to being perpendicular to the axis of the stator core 2 or may be approximately perpendicular to the axis of the stator core 2, that is, may be included at an angle of 75 ° to 105 ° with respect to the axis of the stator core 2. Similarly, the term "extending in the axial direction of the stator core 2" as used herein means either parallel to the axis of the stator core 2 or approximately parallel to the axis of the stator core 2, that is, an angle of 0 ° to 15 ° with respect to the axis of the stator core 2.

In some embodiments of the present application, referring to fig. 3 and 9-10, the flow channel may include a first outflow section 222 and a second outflow section 223, where the first outflow section 222 communicates with the inflow channel 221, and the first outflow section 222 extends along the axial direction of the stator core 2, and the first outflow section 222 ends in a first outlet 23, and the first outlet 23 of the first outflow section 222 faces the first extension 31. The second outflow section 223 communicates with the inflow channel 221, and the second outflow section 223 extends along the axial direction of the stator core 2, and the second outflow section 223 ends with a second outlet 24, and the second outlet 24 of the second outflow section 223 faces the second extension 32. In this way, the cooling liquid flowing out of the first outlet 23 of the first outflow section 222 can be directly sprayed onto the first outer extension 31 to cool the first outer extension 31, and the cooling liquid flowing out of the second outlet 24 of the second outflow section 223 can be directly sprayed onto the second outer extension 32 to cool the second outer extension 32.

In some embodiments of the present application, one inlet passage 221 is provided along the circumferential direction of the stator core 2.

In some embodiments of the present application, a plurality of inlet channels 221 are provided along the circumferential direction of the stator core 2, the plurality of inlet channels 221 are all communicated with the medium channel 12, and the outlet channels are in one-to-one correspondence with the inlet channels 221. In this way, the epitaxial portion can be axially cooled from multiple positions to improve the efficiency of cooling the epitaxial portion.

In some embodiments of the present application, the distance between the outlet channel and the stator slot is smaller than the distance between the outlet channel and the outer circumferential surface of the stator core 2, so that the outlet channel is close to the stator slot and then close to the stator winding 3 embedded in the stator slot, and compared with the case that the outlet channel is close to the outer circumferential surface of the stator core 2, the outlet channel is close to the stator slot, so that the cooling effect of the cooling liquid in the outlet channel on the stator winding 3 is better.

In some embodiments of the present application, referring to fig. 2 to 3, 5, 7, 9 to 10, and 13, the stator core 2 may include: the first iron core 25 and the second iron core 27, the inflow channel 221 is formed in the first iron core 25, the second iron cores 27 are arranged on two axial sides of the first iron core 25, and the outflow channel comprises second iron core sections formed in the second iron cores 27. The second core segment is in communication with an inlet flow channel 221, and the inlet flow channel 221 of the first core 25 may direct the cooling fluid into the second core segment of the second core 27.

Alternatively, one or more second cores 27 may be provided on each side in the axial direction of the first core 25, and the number of second cores 27 on both sides in the axial direction of the first core 25 is equal. In the axial direction of the stator core 2, the stator core 2 is symmetrical about the first core 25.

In this application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In some embodiments of the present application, referring to fig. 2-3, 6, and 9-13, the motor 10 may further include a drainage core 26, a drainage core 26 is disposed between the first core 25 and the second core 27 on each side, the outflow channel further includes a drainage core segment opened in the drainage core 26, an outer diameter of the drainage core 26 is smaller than an outer diameter of the second core 27, and an outer diameter of the first core 25 is not larger than an outer diameter of the drainage core 26. In this way, the coolant from the medium passage 12 can be guided into the inlet passage 221 of the first core 25 through the drain core 26. The outer diameter of the first iron core 25 is not larger than the outer diameter of the drain iron core 26, so that the drain iron core 26 can guide the cooling liquid to the first iron core 25 having a smaller diameter.

Alternatively, the number of the drainage cores 26 between the first core 25 and the second core 27 on each side may be set to one or more, and the number of the drainage cores 26 on both sides in the axial direction of the first core 25 may be equal.

In some embodiments of the present application, referring to fig. 2-3, 8, and 9-13, the motor 10 may further include an end iron core 28, where the end iron core 28 is disposed on a side of the second iron core 27 facing away from the first iron core 25, and a speed increasing hole is formed on the end iron core 28, and the speed increasing hole is communicated with the outflow channel, so that the cooling liquid in the medium channel 12 can enter the inflow channel 221 and then enter the drainage iron core section and the second iron core section, and finally be sprayed to the extension portion through the speed increasing hole, and the cross-sectional area of the speed increasing hole is smaller than that of the outflow channel, so that the cooling liquid sprayed from the speed increasing hole has a higher speed, and the cooling liquid can be sprayed to the extension portion more.

Alternatively, the end cores 28 on each side in the axial direction of the first core 25 may be provided in one or more, and the number of the end cores 28 on both sides in the axial direction of the first core 25 is equal.

In some embodiments of the present application, referring to fig. 13, any two adjacent ones of the first core 25, the drain core 26, the second core 27, and the end core 28 are welded and fixed, the outer circumferences of the first core 25, the drain core 26, the second core 27, and the end core 28 are each provided with a plurality of welding grooves extending in the axial direction of the stator core 2, and the plurality of welding grooves of the first core 25, the plurality of welding grooves of the drain core 26, the plurality of welding grooves of the second core 27, and the plurality of welding grooves of the end core 28 are aligned in the axial direction of the stator core 2. The welding groove is configured as a groove, so that more solder can be stored, which is advantageous in improving the welding firmness between any adjacent two of the first core 25, the drain core 26, the second core 27, and the end core 28. The welding grooves are formed in a plurality of positions, and the stator core 2 can be welded and fixed in the circumferential direction, so that the welding firmness between any two adjacent cores is further improved.

Specifically, referring to fig. 5 to 8 and 13, a plurality of first welding grooves 251 extending in the axial direction of the first core 25 are provided on the outer periphery of the first core 25, a plurality of drain welding grooves 261 extending in the axial direction of the drain core 26 are provided on the outer periphery of the drain core 26, a plurality of second welding grooves 271 extending in the axial direction of the second core 27 are provided on the outer periphery of the second core 27, and a plurality of end welding grooves 281 extending in the axial direction of the end core 28 are provided on the outer periphery of the end core 28. The first welding groove 251, the drainage welding groove 261, the second welding groove 271, and the end welding groove 281 are aligned in the axial direction of the stator core 2. The first welding groove 251, the drainage welding groove 261, the second welding groove 271, and the end welding groove 281 are configured as grooves.

Referring to fig. 5 to 8 and 13, the first core 25 is provided with a plurality of first runner holes 252 arranged so as to be dispersed in the circumferential direction of the first core 25, the first runner holes 252 are formed as the above-described inlet runner 221, the first runner holes 252 are formed from the outer circumferential surface of the first core 25 radially inward of the first core 25, and the first runner holes 252 are non-penetrating grooves for guiding the coolant to flow into the stator core 2. The drainage core 26 is provided with a plurality of drainage flow passage holes 262 arranged in a dispersed manner along the circumferential direction of the drainage core 26, and the drainage flow passage holes 262 are formed as the above-described drainage core segments. The second core 27 is provided with a plurality of second flow passage holes 272 which are arranged dispersedly in the circumferential direction of the second core 27, and the second flow passage holes 272 are formed as the second core segments described above. The end iron core 28 is provided with a plurality of end flow passage holes 282 which are distributed and arranged along the circumferential direction of the end iron core 28, the end flow passage holes 282 are formed as the speed increasing holes described above, and the coolant such as the cooling oil forms an oil column near the end flow passage holes 282 due to a large oil pressure to perform the axial oil injection cooling of the outer extensions of the both ends of the stator winding 3. In order to ensure smooth injection of the oil column to the outer extensions of the two ends of the stator winding 3, the area of the end runner hole 282 needs to be smaller than that of the second runner hole 272, and the end runner hole is axially communicated with the second runner hole 272. Alternatively, the drainage flowbore 262, the second flowbore 272, and the end flowbore 282 are configured as circular holes, and the aperture of the end flowbore 282 is smaller than the aperture of the second flowbore 272. In the axial direction of the stator core 2, the first runner hole 252 is in communication with the corresponding drainage runner hole 262, second runner hole 272, and end runner hole 282, and optionally, the first runner hole 252 is aligned with the communicated drainage runner hole 262, second runner hole 272, and end runner hole 282 along the axial direction of the stator core 2. Of course, the drainage flow passage holes 262, the second flow passage holes 272, and the end flow passage holes 282 may be configured as elliptical holes, square holes, or the like.

Alternatively, referring to fig. 5 to 8 and 13, the first iron core 25 is provided with a plurality of first stator grooves 253 that are arranged in a dispersed manner along the circumferential direction of the first iron core 25, the drain iron core 26 is provided with a plurality of drain stator grooves 263 that are arranged in a dispersed manner along the circumferential direction of the drain iron core 26, the second iron core 27 is provided with a plurality of second stator grooves 273 that are arranged in a dispersed manner along the circumferential direction of the second iron core 27, and the end iron core 28 stator grooves are provided with a plurality of end stator grooves 283 that are arranged in a dispersed manner along the circumferential direction of the end iron core 28. Alternatively, the first stator groove 253, the drain stator groove 263, the second stator groove 273, and the end stator groove 283 are equal in number and correspond one to one.

Optionally, a first runner hole 252 is disposed radially outward of each first stator groove 253, a drain runner hole 262 is disposed radially outward of each drain stator groove 263, a second runner hole 272 is disposed radially outward of each second stator groove 273, and an end runner hole 282 is disposed radially outward of each end stator groove 283.

Alternatively, referring to fig. 5 to 8, 11, and 13, the distance between the first runner hole 252 and the first stator groove 253 is smaller than the distance between the first runner hole 252 and the outer circumferential surface of the first core 25, the distance between the drain runner hole 262 and the drain stator groove 263 is smaller than the distance between the drain runner hole 262 and the outer circumferential surface of the drain core 26, the distance between the second runner hole 272 and the second stator groove 273 is smaller than the distance between the second runner hole 272 and the outer circumferential surface of the second core 27, and the distance between the end runner hole 282 and the end stator groove 283 is smaller than the distance between the end runner hole 282 and the outer circumferential surface of the end core 28.

Alternatively, the plurality of first runner holes 252 are uniformly distributed along the circumferential direction of the first core 25, which facilitates simplifying the process of the plurality of first runner holes 252. The plurality of drainage flow passage holes 262 are distributed on the same circumferential path, which is convenient for simplifying the processing technology of the plurality of drainage flow passage holes 262. The plurality of second flow holes 272 are distributed on the same circumferential path, which facilitates simplifying the processing of the plurality of second flow holes 272. The plurality of end flow holes 282 are distributed on the same circumferential path, which facilitates simplifying the processing of the plurality of end flow holes 282.

Fig. 9-10 and 13 are enlarged sectional views of the relative overlapping positions of the first core 25, the drainage core 26, the second core 27 and the end core 28 and the partial areas thereof, wherein the first core 25 is centered, and the drainage core 26, the second core 27 and the end core 28 are symmetrically arranged along two ends of the first core 25 respectively in order to ensure the electromagnetic performance of the motor, and the axial thickness of the first core 25 is not excessively large. Fig. 11 to 12 are schematic diagrams showing the lamination of the first core 25 and the drainage core 26. Through mutual lamination fit of four kinds of iron cores, guide coolant liquid such as lubricating oil to the inside flow of stator core 2, shorten the heat transfer route, improve stator core 2 and stator winding 3's in the stator groove cooling effect. Meanwhile, spray holes (namely end runner holes 282) are formed in the end portions of the iron cores, and lubricating oil forms oil columns to axially spray and cool the outer extension portions of the stator windings 3.

In some embodiments of the present application, referring to fig. 2-4, both axial ends of the stator core 2 are provided with guide rings, and the guide rings are located radially outside the outer extension portion, so that the radial distance between the guide rings and the outer extension portion can be shortened, and the cooling liquid ejected from the outlet of the guide ring hole can be ejected to the outer extension portion in the radial direction to cool the outer extension portion in the radial direction. Meanwhile, the guide ring is positioned at the axial outer part of the stator core 2, so that a radial cooling path of the guide ring to the extension part is not interfered with an axial cooling path of the guide ring to the extension part, and the two parts of cooling liquid cannot interfere with each other.

Referring to fig. 2 to 4, the deflector ring includes: the first guide ring 6 and the second guide ring 7, the first guide ring 6 is positioned at one axial end of the stator core 2, the guide groove comprises a first guide groove 61 formed between the first guide ring 6 and the inner cavity wall of the mounting cavity 13, a first guide ring hole 62 communicated with the first guide groove 61 is formed on the first guide ring 6, and the outlet of the first guide ring hole 62 is arranged opposite to the radial direction of the first extension part 31; the second guide ring 7 is located at the other axial end of the stator core 2, the guide groove further comprises a second guide groove 71 formed between the second guide ring 7 and the inner cavity wall of the mounting cavity 13, a second guide ring hole 72 communicated with the second guide groove 71 is formed in the second guide ring 7, and an outlet of the second guide ring hole 72 is arranged opposite to the second extension 32 in the radial direction.

The diversion communication holes comprise a first diversion communication hole 17 and a second diversion communication hole 18, the first diversion trench 61 is communicated with the medium channel 12 through the first diversion communication hole 17, and the second diversion trench 71 is communicated with the medium channel 12 through the second diversion communication hole 18. After the cooling liquid enters the medium channel 12 from the medium inlet 11, the cooling liquid respectively flows through the iron core communication hole 16, the first diversion communication hole 17 and the second diversion communication hole 18 to form three independent flow passages, and enters the stator iron core 2, the first diversion ring 6 and the second diversion ring 7. As shown in fig. 3 and 4, the left first guide ring 6 and the inner surface of the casing 1 form a closed first guide groove 61, the right second guide ring 7 and the inner surface of the casing 1 form a closed second guide groove 71, a plurality of circumferential first guide ring holes 62 are formed in the first guide ring 6, a plurality of circumferential second guide rings 72 are formed in the second guide ring 7, and radial oil injection cooling is performed on the two side extension parts of the stator winding 3. The first guide ring 6 and the second guide ring 7 are respectively pressed and fixed by the shell 1, the end cover 15 and the stator core 2. The heat exchange efficiency of the end parts of the stator iron core 2 and the stator winding 3 is stronger and the cooling effect is better by combining the mode that lubricating oil is axially arranged in the stator iron core 2 and the oil guide ring is radially sprayed with oil for cooling.

In some embodiments of the present application, referring to fig. 1-3, the motor 10 may further include: the rotor core 2 is of a cylindrical structure, and the rotor core 8 is sleeved inside the stator core 2. One end of the rotation shaft 4 is rotatably supported to the housing 1 through a first bearing 41, and the other end of the rotation shaft 4 is rotatably supported to the housing 1 through a second bearing 42.

Referring to fig. 2-3, the squirrel cage 9 is embedded in the rotor core 8, and the rotor core 8 is interference fit on the rotating shaft 4.

Alternatively, the first bearing 41 and the second bearing 42 may be deep groove ball bearings, but also cylindrical bearings or other types of bearings.

Alternatively, the electric machine 10 may be an oil-cooled electric machine and the heat exchange medium is a cooling oil. According to the motor 10 of the embodiment of the application, a new oil path design is provided, a cooling oil path is established through slotting of the stator core 2, lubricating oil is led to enter the stator core 2 and approach the stator winding 3 in the stator slot, a heat dissipation path is shortened, and the cooling effect of the stator core 2 and the stator winding 3 in the stator slot is improved. The cooling effect of the outer extension part of the stator winding 3 is improved by adopting the combination of axial oil spray cooling and radial oil spray cooling aiming at the outer extension part of the stator winding 3.

The present application also proposes a vehicle having the above-described motor 10.

A vehicle according to another embodiment of the present application includes the motor 10 of the above embodiment.

According to the vehicle of this application embodiment, the motor 10 that it includes is through seting up iron core runner 22 on stator core 2, heat transfer medium can flow through behind the stator core 2 with stator winding 3 heat transfer, heat transfer medium can also be with stator core 2 heat transfer, be favorable to improving stator core 2's temperature, in addition, through set up the water conservancy diversion ring at stator core 2's axial outer end, heat transfer medium can carry out heat transfer with stator winding 3 after the water conservancy diversion ring, like this, double heat transfer can improve the heat transfer efficiency to stator winding 3, make stator winding 3 be in suitable temperature range as early as possible.

In the description of the present application, it should be understood that the terms "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the description of the present specification, a description referring to the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

Claims (13)

1. An electric machine (10), characterized by comprising:

the device comprises a shell (1), wherein a medium inlet (11) and a medium channel (12) communicated with the medium inlet (11) are arranged on the shell wall of the shell (1), and an installation cavity (13) is formed in the shell (1);

the stator iron core (2), the stator iron core (2) is arranged on the inner cavity wall of the installation cavity (13), a stator groove and an iron core runner (22) are formed in the stator iron core (2), and an inlet of the iron core runner (22) is communicated with the medium channel (12);

the stator winding (3) is embedded in the stator groove, and an outlet of the iron core runner (22) is arranged opposite to the stator winding (3); and

the guide ring is arranged at the outer end of the shell (1) in the axial direction of the stator core (2), a guide groove is formed between the guide ring and the inner cavity wall of the installation cavity (13), the guide groove is communicated with the medium channel (12), a guide ring hole communicated with the guide groove is formed in the guide ring, and an outlet of the guide ring hole is opposite to the stator winding (3).

2. The electric machine (10) according to claim 1, wherein the stator winding (3) comprises a body portion (33) and an extension portion connected with the body portion (33), the body portion (33) is embedded in the stator slot, the extension portion is connected with the body portion (33) and located at an axially outer end of the stator core (2), an outlet of the core runner (22) is formed on an axially end face of the stator core (2), an outlet of the core runner (22) is arranged opposite to the extension portion, and an outlet of the guide ring hole is arranged opposite to a radially outer end of the extension portion.

3. The electric machine (10) according to claim 2, characterized in that the extension portion includes a first extension portion (31) and a second extension portion (32), the first extension portion (31) is connected to the body portion (33) and located at one axial end of the stator core (2), the second extension portion (32) is connected to the body portion (33) and located at the other axial end of the stator core (2), the core runner (22) has a first outlet (23) and a second outlet (24), the first outlet (23) of the core runner (22) is disposed opposite to the first extension portion (31), and the second outlet (24) of the core runner (22) is disposed opposite to the second extension portion (32).

4. A motor (10) according to claim 2 or 3, characterized in that the core runner (22) comprises an inlet runner (221) and an outlet runner, the inlet runner (221) being in communication with the medium channel (12) and the inlet runner (221) extending in a radial direction of the stator core (2), the outlet runner being in communication with the inlet runner (221) and the outlet runner extending in an axial direction of the stator core (2), the outlet of the outlet runner being opposite to the extension.

5. The electric machine (10) according to claim 4, wherein one or more of the inflow channels (221) are provided along the circumferential direction of the stator core (2), and the outflow channels are in one-to-one correspondence with the inflow channels (221).

6. The electric machine (10) of claim 5, characterized in that the distance between the outflow channel and the stator slot is smaller than the distance between the outflow channel and the outer circumferential surface of the stator core (2).

7. The electric machine (10) according to claim 5, characterized in that the stator core (2) comprises:

a first iron core (25), wherein the inflow channel (221) is arranged on the first iron core (25); and

the second iron core (27), the axial both sides of first iron core (25) all are equipped with second iron core (27), the outflow passageway including set up in the second iron core section of second iron core (27).

8. The electric machine (10) of claim 7, wherein the electric machine (10) further comprises a drainage core (26), the drainage core (26) being disposed between the first core (25) and the second core (27) on each side, the outflow channel further comprising a drainage core segment opening into the drainage core (26), an outer diameter of the drainage core (26) being smaller than an outer diameter of the second core (27), an outer diameter of the first core (25) being not larger than an outer diameter of the drainage core (26).

9. The electric machine (10) of claim 8, wherein the electric machine (10) further comprises an end core (28), the end core (28) is disposed on a side of the second core (27) facing away from the first core (25), the end core (28) is provided with a speed increasing hole, the speed increasing hole is in communication with the outflow channel, and a cross-sectional area of the speed increasing hole is smaller than a cross-sectional area of the outflow channel.

10. The electric machine (10) according to claim 9, characterized in that any adjacent two of the first core (25), the drain core (26), the second core (27) and the end core (28) are welded and fixed, the outer circumferences of the first core (25), the drain core (26), the second core (27) and the end core (28) are each provided with a plurality of welding grooves extending in the axial direction of the stator core (2), and the plurality of welding grooves of the first core (25), the plurality of welding grooves of the drain core (26), the plurality of welding grooves of the second core (27) and the plurality of welding grooves of the end core (28) are aligned in the axial direction of the stator core (2).

11. The electric machine (10) according to claim 2, characterized in that the stator core (2) is provided with the deflector ring at both axial ends, and the deflector ring is located radially outside the extension.

12. The electric machine (10) of claim 1, wherein the electric machine (10) further comprises:

a rotating shaft (4), wherein the rotating shaft (4) is rotatably supported on the shell (1); and

rotor core (8), rotor core (8) install in pivot (4) and can follow pivot (4) synchronous rotation, stator core (2) are tubular structure, rotor core (8) cover is located the inside of stator core (2).

13. A vehicle characterized by comprising an electric machine (10) according to any one of claims 1-12.