CN211481035U - Motor casing, motor and vehicle - Google Patents

Abstract

The application discloses motor casing, motor and vehicle, motor casing includes: an outer housing having an axially extending mounting cavity; interior casing, the first end of interior casing install extremely in the installation cavity, just the first end of interior casing with be equipped with first axial seal between the interior terminal surface of installation cavity, the periphery wall of interior casing with be equipped with circumferential seal between the internal perisporium of installation cavity, the second end of interior casing be located outside the installation cavity and with be equipped with second axial seal between the terminal surface of shell body. The utility model provides a motor casing, interior casing are installed to the shell body in, and are equipped with circumference, axial seal structure between interior casing and the shell body to form double-deck seal structure, this has greatly improved motor casing's leakproofness, guarantees that the cooling runner of motor is effectively sealed, prevents the problem that oozes water, leak, strengthens the reliability that motor casing used.

Description

Motor casing, motor and vehicle

Technical Field

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

Background

The casing is the important spare part of electric automobile driving motor, and its important effect is the intensity and the IP67 protection that realize the motor, and the help motor dispels the heat, noise reduction. Among the correlation technique, motor housing adopts integrated into one piece more, and cooling structure is single, and motor housing's tip needs to pass through end cover seal, and sealing performance is relatively poor, and after long-time the use, easily lead to inside the coolant liquid leaks the motor, and the security is relatively poor, has the space of improvement.

Disclosure of Invention

The present application is directed to solving at least one of the problems in the prior art. Therefore, an object of the present application is to provide a motor housing having a good sealing performance and being less prone to leakage of coolant.

According to this application embodiment's motor casing, includes: an outer housing having an axially extending mounting cavity; interior casing, the first end of interior casing install extremely in the installation cavity, just the first end of interior casing with be equipped with first axial seal between the interior terminal surface of installation cavity, the periphery wall of interior casing with be equipped with circumferential seal between the internal perisporium of installation cavity, the second end of interior casing be located outside the installation cavity and with be equipped with second axial seal between the terminal surface of shell body.

According to motor casing of this application embodiment, interior casing is installed to the shell body in, and is equipped with circumference, axial seal structure between interior casing and the shell body to form double-deck seal structure, this has greatly improved motor casing's leakproofness, guarantees that the cooling runner of motor is effectively sealed, prevents the problem that oozes water, leak, the reliability that reinforcing motor casing used.

The electric machine housing according to some embodiments of the present application, the circumferential seal includes a first circumferential seal and a second circumferential seal, the first and second circumferential seals being spaced apart in an axial direction of the inner housing, the first circumferential seal being located proximate the first end of the inner housing and the second circumferential seal being located proximate the second end of the inner housing.

According to some embodiments of the present application, a first sealing groove and a second sealing groove which are radially recessed are respectively disposed at positions of the outer peripheral wall of the inner housing, which are close to both ends of the inner housing, the first circumferential sealing member is disposed in the first sealing groove, and the second circumferential sealing member is disposed in the second sealing groove.

According to some embodiments of the motor housing of the present application, an end surface of the first end of the inner housing is provided with a third seal groove recessed in an axial direction, the first axial seal is provided in the third seal groove, and a thickness of the first axial seal is greater than a depth of the third seal groove.

According to some embodiments of the motor housing of the present application, the third seal groove is an annular groove extending in a circumferential direction of the inner housing, and the first axial seal is annular.

According to this application some embodiments's motor casing, the second end of interior casing is equipped with the connection turn-ups of radially outwards extending, connect the turn-ups towards one side of shell body is equipped with along the fourth seal groove of axial depression, second axial seal locates in the fourth seal groove, just the thickness of second axial seal is greater than the degree of depth of fourth seal groove.

According to some embodiments of the motor housing of the present application, the connection flange is an annular flange, and the fourth seal groove is an annular groove extending in a circumferential direction of the connection flange, and the second seal member is annular.

According to this application some embodiments's motor casing, the shell body includes integrated into one piece's shell body and end plate, the end plate with the tip of shell body link to each other and with the shell body prescribes a limit to the installation cavity, first axial seal locates the end plate with between the first end of interior casing, circumferential seal locates the shell body the internal perisporium with between the periphery wall of interior casing, just second axial seal locates the shell body deviates from the one end of end plate with between the second end of interior casing.

The application also provides a motor.

According to the motor of the embodiment of the application, the motor shell assembly of any one of the embodiments is arranged.

The present application further provides a vehicle.

According to the vehicle of the embodiment of the application, the motor is provided.

The vehicle, the motor and the motor housing assembly have the same advantages over the prior art and are not described in detail herein.

Additional aspects and advantages of the present 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 present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a partial cross-sectional view of a motor housing according to an embodiment of the present application;

fig. 2 is a cross-sectional view of a motor housing according to an embodiment of the present application.

Reference numerals:

the motor housing 100 is provided with a plurality of,

an outer shell 1, a shell body 11, an end plate 12, a reinforcing rib 14,

the inner case 2, the first section 21, the second section 22, the third section 23, the partition projection 24, the cooling flow passage 25,

a first axial seal 31, a second axial seal 32, a first circumferential seal 33, a second circumferential seal 34, an end cover 4, a stator 51, a rotor 52.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

Unless otherwise specified, the front-rear direction in the present application is the longitudinal direction of the vehicle, i.e., the X direction; the left and right directions are the transverse direction of the vehicle, namely the Y direction; the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.

Referring to fig. 1 to 2, a motor housing 100 according to an embodiment of the present application will be described, in which the motor housing 100 is provided with sealing structures in both axial and circumferential directions, so that the motor housing 100 has a double-layer sealing protection, which greatly improves the sealing performance of the motor housing 100, thereby preventing heat exchange medium in the cooling flow channel 25 from leaking into the interior of the motor, and further improving the safety of the motor provided with the motor housing 100.

As shown in fig. 1 and 2, a motor housing 100 according to an embodiment of the present application includes an outer housing 1 and an inner housing 2.

The outer casing 1 has an installation cavity extending in the axial direction, and one end of the installation cavity is open, as shown in fig. 1, the left end of the outer casing 1 is closed, and the right end of the outer casing 1 is open. In this way, the inner housing 2 can be mounted into the mounting cavity from the open end.

As shown in fig. 1, the outer case 1 includes an end plate 12 and a case body 11, the end plate 12 is connected to one end of the case body 11, and the end plate 12 and the case body 11 together define a mounting chamber having an open end. Wherein, the end plate 12 and the shell body 11 are integrally formed, so that the end plate 12 and the shell body 11 have a larger connection strength, and when the inner shell 2 is installed in the installation cavity, the end plate 12 can seal the inner shell 2. From this, need not design solitary end cover 4 and seal shell body 11, reduce the quantity of spare part (need not install screw, pin and silk braid), be convenient for improve assembly efficiency, promote the rigidity of motor and improve the vibration noise of motor.

As shown in fig. 1 and 2, the first end of the inner housing 2 is installed in an installation cavity, wherein the inner housing 2 has a hollow cavity, a stator 51 and a rotor 52 of the motor are installed in the hollow cavity, the stator 51 is connected with the inner housing 2, and the rotor 52 is assembled with the end plate 12 and the end cover 4 by means of a bearing. And the first end (left end in fig. 1) of the inner casing 2 abuts against the inner end surface of the mounting cavity, that is, the first end of the inner casing 2 abuts against the end plate 12, so that the first end of the inner casing 2 is closed, and the heat exchange medium in the cooling flow channel 25 is prevented from flowing into the inner casing 2 from the first end of the inner casing 2 to damage the stator 51 and the rotor 52.

A cooling flow passage 25 for cooling the motor is provided between the inner casing 2 and the outer casing 1.

A first axial seal 31 is arranged between the first end of the inner housing 2 and the inner end surface of the mounting cavity, and as shown in fig. 1, the first axial seal 31 is arranged between the end plate 12 and the first end of the inner housing 2, i.e. between the first end of the inner housing 2 and the end plate 12, and is sealed by the first axial seal 31. In this way, the first axial sealing member 31 can prevent the heat exchange medium outside the inner housing 2 from entering the hollow cavity of the inner housing 2 from the first end (e.g., the left end in fig. 1) of the inner housing 2, so as to achieve axial sealing and improve the sealing performance of the motor housing 100.

As shown in fig. 1, the second end (right end in fig. 1) of the inner housing 2 is located outside the installation cavity, and a second axial seal 32 is disposed between the second end of the inner housing 2 and the end surface of the outer housing 1, as shown in fig. 1, the second axial seal 32 is disposed between one end of the housing body 11 facing away from the end plate 12 and the second end of the inner housing 2. Therefore, the second end of the inner housing 2 can be sealed by the second axial seal 32, so that the flow of the heat exchange medium in the cooling flow channel 25 is prevented from leaking out of the motor housing 100 from the gap between the second end of the inner housing 2 and the outer housing 1, axial sealing is realized, and the sealing performance of the motor housing 100 is improved.

Therefore, the first axial sealing member 31 and the second axial sealing member 32 are respectively arranged at the first end and the second end of the inner shell 2, so that both ends of the inner shell 2 are effectively sealed, and the sealing performance of the motor shell 100 is improved.

A circumferential seal is provided between the outer circumferential wall of the inner housing 2 and the inner circumferential wall of the mounting cavity, and as shown in fig. 1, the circumferential seal is provided between the inner circumferential wall of the housing body 11 and the outer circumferential wall of the inner housing 2. The circumferential sealing member is used for improving the sealing performance of circumferential matching between the inner casing 2 and the outer casing 1 so as to limit the heat exchange medium in the cooling flow channel 25 from diffusing and leaking to the first end and the second end of the inner casing 2 along the axial direction.

As shown in fig. 1, the first end and the second end of the outer peripheral wall of the inner housing 2 are sealed by the circumferential sealing member and the inner peripheral wall of the housing body 11, so that the sealing structure along the axial direction and the circumferential direction is provided between the inner housing 2 and the outer housing 1 to form a double-sealing matching structure, so as to play a role of double-layer protection to the motor housing 100, enhance the sealing capability of the motor housing 100, further prevent the water seepage problem of the motor housing 100, and improve the use safety of the motor.

According to motor casing 100 of the embodiment of this application, interior casing 2 is installed to in the shell body 1, and is equipped with circumference, axial seal structure between interior casing 2 and the shell body 1 to form double-deck seal structure, this has greatly improved motor casing 100's leakproofness, guarantees that the cooling runner 25 of motor is effectively sealed, prevents to ooze the problem of water, leakage, the reliability of reinforcing motor casing 100 use.

In some embodiments, as shown in fig. 1, the circumferential seals include a first circumferential seal 33 and a second circumferential seal 34.

As shown in fig. 1, the first circumferential seal 33 and the second circumferential seal 34 are arranged at intervals in the axial direction of the inner housing 2, so that the inner housing 2 and the outer housing 1 are circumferentially sealed at least two positions in the axial direction, and the circumferential sealing performance of the motor housing 100 is improved.

Wherein the first circumferential seal 33 is located near a first end of the inner housing 2 and the second circumferential seal 34 is located near a second end of the inner housing 2. In this way, the first circumferential sealing member 33 and the first axial sealing member 31 form a circumferential and axial double sealing structure at the first end of the inner housing 2, and the second circumferential sealing member 34 and the second axial sealing member 32 form a circumferential and axial double sealing structure at the second end of the inner housing 2, so that both ends of the inner housing 2 and the outer housing 1 realize double protection, and the sealing effect between the inner housing 2 and the outer housing 1 is greatly improved.

Note that, as shown in fig. 1 and 2, the first circumferential seal 33 and the second circumferential seal 34 are respectively located on both sides of the cooling flow passage 25. Thus, the first circumferential sealing member 33 can limit the heat exchange medium in the cooling flow channel 25 from flowing to the first end of the inner shell 2, and the second circumferential sealing member 34 can limit the heat exchange medium in the cooling flow channel 25 from flowing to the second end of the inner shell 2, so that the heat exchange medium is stably kept in the cooling flow channel 25, and the problems of leakage and water seepage of the cooling flow channel 25 are avoided.

As shown in fig. 1, a first sealing groove and a second sealing groove are respectively disposed at positions of the outer peripheral wall of the inner housing 2 near two ends of the inner housing 2, and the first sealing groove and the second sealing groove are radially recessed, and as shown in fig. 1, a first circumferential sealing member 33 is disposed in the first sealing groove, and a second circumferential sealing member 34 is disposed in the second sealing groove. In this way, through the design of the first seal groove and the second seal groove, the positions of the first circumferential seal 33 and the second circumferential seal 34 on the outer circumferential wall of the inner housing 2 can be fixed, the first circumferential seal 33 and the second circumferential seal 34 are prevented from moving in the axial direction, the stability of the seal structure is improved, and the quick positioning and installation of the first circumferential seal 33 and the second circumferential seal 34 are facilitated.

The radial thickness of the first circumferential seal 33 is greater than the radial depth of the first seal groove, and the radial thickness of the second circumferential seal 34 is greater than the radial depth of the second seal groove, so that after the first circumferential seal 33 and the second circumferential seal 34 are stably installed, the radially outer ends of the first circumferential seal 33 and the second circumferential seal 34 can be stably contacted with the inner circumferential wall of the installation cavity, and the sealing performance between the inner casing 2 and the outer casing 1 is further improved.

As shown in fig. 1, the inner housing 2 includes a first section 21, a second section 22 and a third section 23, wherein the first section 21, the second section 22 and the third section 23 are sequentially connected along the axial direction of the inner housing 2, and the first section 21 and the third section 23 are hermetically fitted with the housing body 11.

As shown in fig. 1, the first sealing groove is disposed on the outer peripheral wall of the first section 21, that is, a first circumferential sealing element 33 is disposed between the first section 21 and the outer casing 1, the second sealing groove is disposed on the outer peripheral wall of the third section 23, that is, a second circumferential sealing element 34 is disposed in front of the third section 23 and the outer casing 1, and a cooling flow channel 25 for circulating a heat exchange medium is formed between the second section 22 and the outer casing 1, so that the structural design of each part of the inner casing 2 is reasonable, that is, the heat exchange medium can effectively exchange heat with the motor, and the motor casing 100 can be reasonably sealed.

As shown in fig. 1, a third sealing groove is formed in an end surface of the first end of the inner housing 2, the third sealing groove is recessed in the axial direction of the inner housing 2, the first axial sealing member 31 is disposed in the third sealing groove, and the thickness of the first axial sealing member 31 in the axial direction is greater than the depth of the third sealing groove. In this way, after the inner housing 2 and the outer housing 1 are assembled, the portion of the first axial seal 31 protruding out of the third seal groove is tightly pressed against the end plate 12, so that the first end of the inner housing 2 and the outer housing 1 are effectively sealed in the axial direction.

Wherein, the third seal groove is the ring channel that extends along the circumference of interior casing 2, and first axial seal 31 is the annular, and like this, first axial seal 31 is installed in the third seal groove and can be makeed the terminal surface of the first end of interior casing 2 all realize effectively sealed cooperation through first axial seal 31 along each position of circumference in third seal groove, has greatly improved motor casing 100's leakproofness.

The second end of interior casing 2 is equipped with the connection turn-ups, connects the turn-ups and radially outwards extends along interior casing 2, and connects the turn-ups and be equipped with the fourth seal groove towards one side of outer casing 1, and second axial seal 32 locates in the fourth seal groove, and the thickness of second axial seal 32 is greater than the degree of depth of fourth seal groove. In this way, after the inner housing 2 and the outer housing 1 are assembled, the connecting flange is attached to the end of the housing body 11 away from the end plate 12, and the portion of the second axial sealing element 32 protruding out of the fourth sealing groove abuts against the end surface of the housing body 11, so that the second end of the inner housing 2 and the outer housing 1 are effectively sealed in the axial direction.

As shown in fig. 1, one end of the third section 23 away from the second section 22 is located outside the mounting cavity, and one end of the third section 23 away from the second section 22 is provided with a connecting flange, and the connecting flange is attached to the end surface of the housing body 11.

As shown in fig. 1, the third sealing groove is disposed on the end surface of the first section 21 away from the second section 22, that is, a first axial sealing element 31 is disposed between the first section 21 and the inner end surface of the mounting cavity, the second sealing groove is disposed on the connecting flange of the third section 23, that is, a second axial sealing element 32 is disposed in front of the third section 23 and the outer housing 1, and a cooling flow channel 25 for circulating a heat exchange medium is formed between the second section 22 and the outer housing 1, so that the structural design of each part of the inner housing 2 is reasonable, effective heat exchange of the heat exchange medium on the motor can be realized, and the motor housing 100 can be sealed reasonably.

The connection flange is an annular flange extending along the circumferential direction of the third section 23, the fourth sealing groove is an annular groove extending along the circumferential direction of the connection flange, and the second sealing element is annular. Thus, when the second axial sealing element 32 is installed between the connecting flange and the outer shell 1 for sealing, all circumferential positions of the connecting flange can be in sealing abutting press fit with the shell body 11 through the second axial sealing element 32, and the sealing performance between the second end of the inner shell 2 and the outer shell 1 is greatly improved.

It should be noted that the first circumferential seal 33, the second circumferential seal 34, the first axial seal 31, and the second axial seal 32 of the present application may be all O-rings having elasticity, and by providing a plurality of O-rings, sealing between the inner casing 2 and the outer casing 1 in the axial direction and the circumferential direction is enabled, so that the sealing problem is solved well.

As shown in fig. 1, the inner housing 2 of the present application is mounted into the mounting cavity from the open end, and the outer peripheral wall of the inner housing 2 is interference-fitted with the inner peripheral wall of the mounting cavity. Like this, when assembling interior casing 2 and shell body 1, need not be used for connecting interior casing 2 and shell body 1 through setting up solitary connection structure, reduce connection structure's quantity, improve the installation effectiveness, reduce installation cost.

When the motor shell 100 is machined, the inner shell 2 and the outer shell 1 are machined separately, so that the inner shell 2 and the outer shell 1 can be machined and cast separately, the casting and the machining are simple and convenient, the cost is low, and the problems of complex process and heavy weight of the low-pressure integrally cast shell are solved.

As shown in fig. 1, the case body 11 and the end plate 12 of the outer case 1 are integrated, so that the connection strength between the end plate 12 and the case body 11 is improved, the number of parts (including screws, pins, sleeves, and the like) is reduced, the rigidity of the outer case 1 is effectively improved, and the vibration noise of the motor is improved.

According to motor casing 100 of the application, motor casing 100 is interior casing 2 and the design alone of shell body 1, realizes connecting through interference fit, and shell body 1 need not set up end cover 4 alone, and mounting structure is simple, does benefit to the quantity that reduces the connecting piece, is convenient for realize rapid Assembly, strengthens the NVH characteristic.

In some embodiments, the outer peripheral wall of the inner housing 2 is provided with a plurality of partition projections 24, the plurality of partition projections 24 are spaced apart in the axial direction of the inner housing 2, and any two adjacent partition projections 24 form a cooling flow passage 25 between the inner housing 2 and the housing body 11. Like this, inject cooling flow channel 25 through the self structure of interior casing 2, shell body 1, need not be through the independent design runner structure, be convenient for realize the cooling to the motor, and heat transfer medium can with the periphery wall direct contact of interior casing 2, promote heat exchange efficiency.

Wherein, the peripheral wall that separates arch 24 and locate interior casing 2 does benefit to the overall structure intensity of reinforcing interior casing 2, and a plurality of separation arch 24 make interior casing 2 along the structural strength and the rigidity homoenergetic of axial a plurality of positions can be promoted effectively, and then promote the holistic structural strength and the rigidity of motor casing 100.

From this, establish through the periphery wall at inner housing 2 and separate protruding 24, rely on special protruding 24 design of separation to form the cooling water route, inner housing 2 and the cooperation of shell body 1 form cooling runner 25, and cooling runner 25 can be designed into the heat dissipation form better, the lower spiral form of flow resistance to make motor casing 100's weight lighter under the condition that satisfies the motor heat dissipation requirement, avoided extrusion moulding formula casing only can do the round trip water course, the big poor problem of heat dissipation of flow resistance.

As shown in fig. 1, the outer peripheral wall of the outer shell 1 is provided with a plurality of ribs 14 spaced apart in the axial direction, and the ribs 14 contribute to improving the overall structural strength and rigidity of the outer shell 1.

As shown in fig. 1, the outer peripheral wall of the inner housing 2 is provided with a first sunken groove which is recessed along the radial direction, the inner peripheral wall of the mounting cavity is provided with a second sunken groove which is recessed along the radial direction, as shown in fig. 1, the separating protrusion 24 is arranged in the first sunken groove, the separating protrusions 24 are spaced apart in the first sunken groove, one end of the separating protrusion 24, which is away from the bottom wall of the first sunken groove, extends into the second sunken groove, and the separating protrusion 24 abuts against the bottom wall of the second sunken groove, so that the first sunken groove and the second sunken groove are formed into an integral flow channel cavity together, and the integral flow channel cavity is divided into a plurality of independent cooling flow channels 25 by the separating protrusions 24, so that a heat exchange medium can flow in the cooling flow channels 25, and the heat exchange media in the two adjacent cooling flow channels 25 do not influence each other.

Wherein, establish first heavy groove, the second is established to shell body 1 at interior casing 2, not only inject the runner cooling that is used for the heat transfer medium circulation, and reduced interior casing 2, shell body 1's whole weight, reduce the required material of production, reduce the processing cost, and be convenient for transportation and installation.

As shown in fig. 1, the inner housing 2 includes a first section 21, a second section 22 and a third section 23, wherein the first section 21, the second section 22 and the third section 23 are sequentially connected along the axial direction of the inner housing 2, the first sink groove is formed in the outer peripheral wall of the second section 22, and the first section 21 and the third section 23 are hermetically fitted with the housing body 11.

As shown in fig. 1, a first axial sealing member 31 and a first circumferential sealing member 33 are disposed between the first section 21 and the outer casing 1, a second axial sealing member 32 and a second circumferential sealing member 34 are disposed in front of the third section 23 and the outer casing 1, and a cooling flow channel 25 for circulating a heat exchange medium is formed between the second section 22 and the outer casing 1, so that the structural design of each part of the inner casing 2 is reasonable, that is, the heat exchange medium can effectively exchange heat with the motor, and the motor housing 100 can be reasonably sealed.

In some embodiments, as shown in fig. 1 and 2, the separation protrusion 24 is an annular rib extending along the circumferential direction of the inner housing 2, and the separation protrusions 24 are uniformly spaced along the axial direction of the inner housing 2, so that a plurality of cooling channels 25 with uniform width can be formed between the inner housing 2 and the outer housing 1 by providing the separation protrusions 24 on the outer circumferential wall of the inner housing 2, so that the cooling effect at each position of the motor housing 100 along the axial direction is relatively balanced, and the cooling performance of the whole motor housing 100 is improved.

As shown in fig. 1, the motor case 100 further includes: and an end cap 4.

As shown in fig. 1 and 2, an end of the inner shell 2 facing away from the end plate 12 is provided with a connecting boss, wherein the end cover 4 is connected with the connecting boss through a threaded fastener, it can be understood that the inner shell 2 and the outer shell 1 are in an interference fit. When carrying out motor casing 100's assembly like this, pass through threaded fastener with the connection boss of end cover 4 and interior casing 2 and connect and can realize motor casing 100's assembly, assembly process is simple, and assembly efficiency is high.

Wherein, be equipped with the screw through-hole in the connection boss, the screw passes end cover 4, the through-hole on the connection boss, connects interior casing 2, shell body 1 and end cover 4 as an organic whole, plays the effect of axial seal, improves the rigidity of being connected of interior casing 2, shell body 1, avoids the slip problem of the production between the casing when the full moment of torsion power output of motor.

The application also provides a motor.

According to the motor of the embodiment of the application, provided with the motor shell 100 of any one of the above embodiments, the motor shell 100 has good sealing performance, the problems of leakage and water seepage of the motor can be prevented, the safety and the stability of the motor are good, and the motor is convenient to use for a long time.

The present application further provides a vehicle.

According to the vehicle of this application embodiment, be provided with the motor of above-mentioned embodiment, the stable performance of motor can make having of vehicle stable power take off, guarantees the safe operation of vehicle, improves the performance of whole car.

1. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

2. In the description of the present application, "the first feature" and "the second feature" may include one or more of the features.

3. In the description of the present application, "a plurality" means two or more.

4. In the description of the present application, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact not directly but via another feature therebetween.

5. In the description of the present application, the first feature being "on," "above" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 application. In this specification, the schematic representations of the terms used above do not necessarily refer 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.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An electric machine housing, comprising:

an outer housing having an axially extending mounting cavity;

interior casing, the first end of interior casing install extremely in the installation cavity, just the first end of interior casing with be equipped with first axial seal between the interior terminal surface of installation cavity, the periphery wall of interior casing with be equipped with circumferential seal between the internal perisporium of installation cavity, the second end of interior casing be located outside the installation cavity and with be equipped with second axial seal between the terminal surface of shell body.

2. The electric machine housing according to claim 1, wherein the circumferential seal includes a first circumferential seal and a second circumferential seal, the first and second circumferential seals being spaced apart in an axial direction of the inner housing, the first circumferential seal being located proximate the first end of the inner housing and the second circumferential seal being located proximate the second end of the inner housing.

3. The motor housing according to claim 2, wherein a first seal groove and a second seal groove that are radially recessed are provided in the outer peripheral wall of the inner housing at positions near both ends of the inner housing, respectively, the first circumferential seal is provided in the first seal groove, and the second circumferential seal is provided in the second seal groove.

4. The electric machine housing according to any of claims 1-3, wherein an end face of the first end of the inner housing is provided with a third seal groove that is recessed in an axial direction, the first axial seal is disposed within the third seal groove, and a thickness of the first axial seal is greater than a depth of the third seal groove.

5. The electric machine housing according to claim 4, wherein the third seal groove is an annular groove extending in a circumferential direction of the inner housing, and the first axial seal is annular.

6. The electric machine housing according to any of claims 1-3, wherein the second end of the inner housing is provided with a radially outwardly extending connection flange, wherein a side of the connection flange facing the outer housing is provided with a fourth seal groove that is recessed in an axial direction, wherein the second axial seal is disposed in the fourth seal groove, and wherein a thickness of the second axial seal is greater than a depth of the fourth seal groove.

7. The motor housing of claim 6, wherein the connection flange is an annular flange and the fourth seal groove is an annular groove extending circumferentially around the connection flange, and the second axial seal is annular.

8. The electric machine housing according to any one of claims 1-3, wherein the outer housing includes an integrally formed housing body and an end plate coupled to an end of the housing body and defining the mounting cavity with the housing body, the first axial seal is disposed between the end plate and the first end of the inner housing, the circumferential seal is disposed between an inner circumferential wall of the housing body and an outer circumferential wall of the inner housing, and the second axial seal is disposed between an end of the housing body facing away from the end plate and the second end of the inner housing.

9. An electrical machine, characterized in that a machine housing according to any one of claims 1-8 is provided.

10. A vehicle characterized in that an electric machine as claimed in claim 9 is provided.

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