CN217388414U - Motor casing and motor - Google Patents

Abstract

The utility model relates to a motor casing and motor, motor casing includes shell main part, baffle and sealing member, and the shell main part is equipped with and is equipped with open-ended fluid flow channel along the at least one end of first direction, and the baffle is connected in the opening, is equipped with fluid inlet and fluid outlet of mutual spaced on the baffle, and fluid inlet and fluid outlet all communicate with fluid flow channel, and the sealing member is connected between baffle and shell main part to realize the sealing connection of baffle at the opening part. The motor shell can solve the problem that welding cracks are generated due to the fact that large welding stress and deformation are easily generated in the welding process of the motor shell, and therefore the sealing effect is affected.

Description

Motor casing and motor

Technical Field

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

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to an electromagnetic induction law. At present, common motor cooling modes comprise air cooling, water cooling or natural cooling by ambient temperature, and the cooling process is also generally carried out by gradually cooling the inside of a machine shell. For a water-cooled motor, the sealing of the cooling water channel is realized by welding the machine shell.

The motor shell can be made of aluminum alloy or magnesium alloy, and magnesium alloy with lower weight is selected for reducing the weight of the motor, but the magnesium alloy has a higher thermal expansion coefficient, so that larger welding stress and deformation are easily generated in the welding process, welding cracks are generated, and the sealing effect is influenced.

Disclosure of Invention

Therefore, it is necessary to provide a motor housing and a motor, which solve the problem that a welding crack is easily generated due to large welding stress and deformation during the welding process of the motor housing, thereby affecting the sealing effect.

According to one aspect of the present application, there is provided a motor housing comprising: a housing main body provided with a fluid flow passage having an opening at least one end thereof in a first direction; the baffle is connected to the opening, a fluid inlet and a fluid outlet which are mutually spaced are arranged on the baffle, and the fluid inlet and the fluid outlet are communicated with the fluid flow channel; and the sealing element is connected between the baffle plate and the shell main body in a sealing mode so as to realize the sealing connection of the baffle plate at the opening.

In one embodiment, the shell main body comprises a first end plate and a second end plate which are opposite along a first direction, and the first end plate and/or the second end plate is provided with the opening; the shell body is provided with a clamping groove surrounding the opening, one part of the sealing element is positioned in the clamping groove, and the other part of the sealing element is in contact with the baffle.

In one embodiment, the fluid flow channel is provided with a heat dissipation surface that is raised or depressed relative to a sidewall of the fluid flow channel.

In one embodiment, the housing main body includes an inner housing and an outer housing sleeved outside the inner housing, and the annular fluid flow passage is formed between the inner housing and the outer housing.

In one embodiment, the motor housing further comprises a heat sink disposed within the fluid flow path, the heat sink having opposing first and second sides; the first side surface is attached to one side surface of the inner shell facing the fluid flow channel, and a gap is formed between the second side surface and one side surface of the outer shell facing the fluid flow channel; or the first side surface is attached to one side surface of the outer shell facing the fluid flow channel, and a gap is formed between the second side surface and one side surface of the inner shell facing the fluid flow channel.

In one embodiment, the second side surface is provided with a groove and/or a protrusion extending lengthwise in the first direction, and the groove wall of the groove and/or the surface of the protrusion form the heat dissipation surface.

In one embodiment, the number of the grooves or the protrusions is provided with a plurality, and the grooves or the protrusions are arranged at intervals along the circumferential direction of the shell main body.

In one embodiment, the heat sink at least partially surrounds the fluid flow passage in a circumferential direction of the fluid flow passage.

In one embodiment, the heat sink includes a plurality of sub-heat sink portions and a plurality of connection portions; the plurality of radiating sub-parts are arranged at intervals along the circumferential direction of the fluid flow channel; each connecting part is connected between two adjacent heat radiating sub-parts.

According to another aspect of the present application, there is provided an electric machine comprising a machine housing as described above.

In the motor shell, the shell main body is provided with a fluid flow channel with an opening at least one end along the first direction, the opening of the fluid flow channel is connected with the baffle plate, the baffle plate is provided with a fluid inlet and a fluid outlet which are mutually spaced, and the fluid inlet and the fluid outlet are both communicated with the fluid flow channel, so that fluid can be introduced into the fluid flow channel through the fluid inlet, and the fluid can flow out of the fluid flow channel through the fluid outlet, so that heat is exchanged between the fluid and the motor to realize heat dissipation; and moreover, the baffle and the shell main body are connected in a sealing manner through the sealing element, so that the fluid flow channel is sealed, the fluid flow channel is not required to be sealed by welding, welding cracks are generated due to large welding stress and deformation generated in the welding process, and the sealing effect is improved.

Drawings

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

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an orthographic view of the motor housing of FIG. 1 in a first orientation;

FIG. 4 is a front perspective view of the motor housing of FIG. 1 taken in a direction opposite to that of FIG. 2;

fig. 5 is a schematic structural diagram of a heat sink of a motor housing according to an embodiment of the present application.

The reference numbers illustrate:

10. a motor housing; 100. a housing main body; 110. an inner housing; 120. an outer housing; 130. a first end plate; 140. a second end plate; 150. an opening; 160. a card slot; 200. a baffle plate; 210. a fluid inlet; 220. a fluid outlet; 300. a seal member; 400. a heat sink; 410. a first side surface; 420. a second side surface; 430. a protrusion; 440. a sub-heat dissipation portion; 450. a connecting portion; x, the first direction.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "transverse," "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 to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The motor can generate heat in the working process, and a cooling water channel is usually required to be arranged to accelerate the heat dissipation speed. At present, the motor shell is usually made of aluminum alloy, but the motor shell made of aluminum alloy is heavy.

In order to reduce the weight of the motor, in some related technologies, a shell made of a magnesium alloy material is selected, the weight of the magnesium alloy can be reduced by about two thirds of the weight of the aluminum alloy, but the thermal expansion coefficient of the magnesium alloy is larger and about 1.2 times of the thermal expansion coefficient of the aluminum alloy, so that if the shell made of the magnesium alloy material is used as a motor shell, during the process of sealing the cooling water channel by adopting a welding mode, large welding stress and deformation are easily generated, welding cracks are generated, and the sealing effect is affected.

In order to solve the above problems, an embodiment of the present application provides a motor housing, in which a fluid flow channel is disposed on a housing main body, an opening is disposed at least one end of the fluid flow channel, a baffle is connected to the opening, a fluid inlet and a fluid outlet are disposed on the baffle and spaced from each other, the fluid inlet and the fluid outlet are both communicated with the fluid flow channel, the fluid inlet is used for fluid to enter the fluid flow channel, and the fluid outlet is used for fluid to flow out of the fluid flow channel, so as to exchange heat with a motor by using fluid. Based on this, sealing connection sealing member between baffle and shell main part to realize the sealing connection of baffle at the opening part, solve motor casing welding in-process and produce great welding stress and deformation easily, lead to producing welding crack, thereby influence the problem of sealed effect.

Fig. 1 is a schematic view illustrating a structure of a motor housing according to an embodiment of the present application; fig. 2 shows a partial enlarged view at a in fig. 1.

Referring to fig. 1, an embodiment of the present application provides a motor housing 10, including a housing main body 100, a baffle 200 and a sealing member 300, wherein the housing main body 100 is provided with a fluid flow channel, at least one end of the fluid flow channel along a first direction X is provided with an opening 150, the baffle 200 is connected to the opening 150, the baffle 200 is provided with a fluid inlet 210 and a fluid outlet 220 which are spaced from each other, and the fluid inlet 210 and the fluid outlet 220 are both communicated with the fluid flow channel; the sealing member 300 is sealingly coupled between the barrier plate 200 and the case main body 100 to achieve the sealing coupling of the barrier plate 200 at the opening 150.

In the motor housing 10, the housing main body 100 is provided with a fluid flow channel having an opening 150 at least one end along the first direction X, the baffle 200 is connected to the opening 150 of the fluid flow channel, the baffle 200 is provided with a fluid inlet 210 and a fluid outlet 220 spaced from each other, and the fluid inlet 210 and the fluid outlet 220 are both communicated with the fluid flow channel, so that fluid can be introduced into the fluid flow channel through the fluid inlet 210, and the fluid can flow out of the fluid flow channel through the fluid outlet 220, so as to exchange heat with the motor by the fluid, thereby achieving heat dissipation; in addition, the baffle 200 and the shell main body 100 are connected in a sealing manner through the sealing element 300, so that the fluid flow channel is sealed, the fluid flow channel is not required to be sealed by welding, welding cracks are generated due to large welding stress and deformation generated in the welding process, and the sealing effect is improved.

The positions of the fluid inlet 210 and the fluid outlet 220 may be set at any position of the fluid flow path. Preferably, the fluid inlet 210 and the fluid outlet 220 are disposed at opposite ends of the fluid flow path, respectively. The shape of the fluid flow channel can be linear, broken line, curve or combination thereof, and can also be annular.

Figure 3 illustrates a front projection view of the motor housing of figure 1 in a first direction; fig. 4 shows a front projection view of the motor housing of fig. 1 in the opposite direction to that of fig. 2.

Referring to fig. 1, 3 and 4, in some embodiments, the housing body 100 includes a first end plate 130 and a second end plate 140 opposite to each other along the first direction X, each of the first end plate 130 and the second end plate 140 has an opening 150, the housing body 100 has a locking groove 160 surrounding the opening 150, and a portion of the sealing member 300 is located in the locking groove 160 and another portion contacts the baffle 200. By arranging the clamping groove 160 around the opening 150, one part of the sealing element 300 is clamped into the clamping groove 160, and the other part of the sealing element is abutted against the baffle 200, so that the opening 150 is sealed, and the sealing effect is improved. Specifically, the first end plate 130 and the second end plate 140 may be integrally formed to reduce the difficulty of sealing. The opening 150 may also be disposed on one of the first end plate 130 and the second end plate 140, so as to reduce the number of the openings 150, further reduce the sealing difficulty, and improve the sealing effect. Wherein the sealing member 300 may be a sealing ring.

Further, the number of the baffle plates 200 at a certain end in the first direction X may be one or more. When the number of the baffle plates 200 at one end in the first direction X is one, one baffle plate 200 shields the plurality of openings 150 at the same time, and the structure and the operation at the time of sealing are simple. When the number of the baffle plates 200 at one end in the first direction X is plural, a plurality of openings 150 may correspond to one baffle plate 200, or one opening 150 may correspond to one baffle plate 200. Preferably, one opening 150 corresponds to one baffle 200, so that each opening 150 can be more finely sealed.

In one embodiment, the baffle 200 is fixed to the housing body 100 with screws.

In some embodiments, the heat dissipation surface corresponding to the sidewall protrusion 430 of the fluid flow channel is disposed in the fluid flow channel, and the heat dissipation area can be increased and the heat dissipation speed can be increased by disposing the heat dissipation surface corresponding to the sidewall protrusion 430 of the fluid flow channel in the fluid flow channel. In other embodiments, the fluid flow channel is provided with a heat dissipation surface recessed relative to the side wall of the fluid flow channel, so that the heat dissipation area is increased, and the heat dissipation speed is increased.

In some embodiments, the housing body 100 includes an inner housing 110 and an outer housing 120 sleeved outside the inner housing 110, and an annular fluid flow passage is formed between the inner housing 110 and the outer housing 120. The outer housing 120 is sleeved on the inner housing 110 to form an annular fluid flow channel, so that the housing main body 100 has a simple structure and is convenient to form.

Further, the inner housing 110 and the outer housing 120 are coaxially disposed, so that the annular fluid flow passage has a uniform width at each position in the circumferential direction, thereby ensuring that the fluid can uniformly flow through the annular fluid flow passage.

Fig. 5 is a schematic structural view showing a heat sink of a motor housing according to an embodiment of the present application.

Referring to fig. 1 and 5, in some embodiments, the motor housing 10 further includes a heat sink 400 disposed in the fluid flow passage, the heat sink 400 having a first side surface 410 and a second side surface 420 opposite to each other, the first side surface 410 is attached to a side surface of the inner housing 110 facing the fluid flow passage, and the second side surface 420 is spaced from a side surface of the outer housing 120 facing the fluid flow passage. In other embodiments, the motor housing 10 further includes a heat sink 400 disposed in the fluid flow passage, the heat sink 400 having a first side surface 410 and a second side surface 420 opposite to each other, the first side surface 410 being attached to a side surface of the outer housing 120 facing the fluid flow passage, and the second side surface 420 being spaced apart from a side surface of the inner housing 110 facing the fluid flow passage. By arranging the heat sink 400 in the fluid flow passage and attaching one side surface of the heat sink 400 to one side surface in the fluid flow passage, the other side surface of the heat sink 400 is spaced from the other side surface in the fluid flow passage, so that the heat dissipation is accelerated by the heat sink 400 and the circulation space in the fluid flow passage is ensured. Wherein, the heat sink 400 is separately provided from the case main body 100 or integrally formed therewith.

In other embodiments, the heat dissipation member 400 may be disposed on two opposite side surfaces of the fluid flow channel to further improve the heat dissipation effect.

In some embodiments, the second side 420 is provided with a groove extending lengthwise in the first direction X, and a groove wall of the groove forms a heat dissipation surface. It will be appreciated that when the fluid inlet 210 and the fluid outlet 220 are respectively disposed at two ends of the fluid flow channel, the fluid in the fluid flow channel is driven by the extending direction of the fluid flow channel, i.e. the flow path of the fluid in the fluid flow channel is the same as or similar to the extending direction of the fluid flow channel. And the second side surface 420 of the heat sink 400 in the fluid flow channel is provided with a groove extending lengthwise along the first direction X, so that the fluid in the fluid flow channel is guided by the groove and can move along the extending direction of the fluid flow channel while having a partial motion moving along the first direction X, thereby extending the flow path of the fluid, fully utilizing the fluid to exchange heat with the motor, and improving the heat exchange efficiency. Wherein the cross-sectional shape of the groove may be semi-circular, triangular, quadrilateral or a combination thereof.

In some embodiments, the second side 420 is provided with a protrusion 430 extending lengthwise along the first direction X, and a surface of the protrusion 430 forms a heat dissipation surface. Therefore, a groove is formed between the two adjacent protrusions 430, the groove plays a role in guiding the flow channel direction of fluid, the moving path of the fluid is prolonged, the fluid and the motor are fully utilized for heat exchange, and the heat exchange efficiency is improved. Wherein the cross-sectional shape of the groove may be semicircular, triangular, quadrangular or a combination thereof.

In other embodiments, the shape of the protrusion 430 may be a hemisphere, a triangular pyramid, or a tetrahedron, and the number of the protrusions 430 is not limited. Preferably, the protrusion 430 is provided in plural, and the plural protrusions 430 are arranged in a row along the first direction X and in a row along the circumferential direction of the case main body 100.

In some embodiments, the second side surface 420 is provided with a plurality of grooves or protrusions 430 extending lengthwise in the first direction X, and the grooves or protrusions 430 are spaced apart from each other along the circumference of the case main body 100. By providing the plurality of grooves or the protrusions 430, the heat dissipation area is further increased, the movement path of the fluid is extended, and the grooves or the protrusions 430 are arranged at intervals along the circumferential direction of the case main body 100, so that each position in the circumferential direction of the case main body 100 has a good heat dissipation effect.

In some embodiments, heat sink 400 at least partially surrounds the fluid flow passage in a circumferential direction of the fluid flow passage. By arranging the heat dissipation member 400 to partially or completely surround the fluid flow channel along the circumferential direction of the fluid flow channel, the heat dissipation member 400 can dissipate heat of different parts in the fluid flow channel along the circumferential direction of the fluid flow channel, and the heat dissipation effect is improved.

Further, the heat sink 400 includes a plurality of sub heat sink portions 440 and a plurality of connecting portions 450, the plurality of sub heat sink portions 440 are arranged at intervals in the circumferential direction of the fluid flow channel, and each connecting portion 450 is connected between two adjacent sub heat sink portions 440. The sub heat dissipation parts 440 are connected by the connecting part 450, so that the plurality of sub heat dissipation parts 440 can be uniformly arranged in the circumferential direction of the fluid flow channel, and thus heat dissipation can be performed more uniformly at each position of the fluid flow channel.

Specifically, two adjacent connecting portions 450 connected to the same sub-heat dissipating portion 440 are respectively located at two opposite ends of the sub-heat dissipating portion 440 along the first direction X, so that the components of the heat dissipating member 400 are uniformly arranged, the structure is more stable, and the flow direction of the fluid is more uniformly guided. The heat dissipation sub-portion 440 and the connecting portion 450 may be integrally formed.

In one embodiment, the fluid inlet 210 and the fluid outlet 220 are disposed at the same end of the fluid flow channel along the first direction X, the housing body 100 includes a first end plate 130 and a second end plate 140 opposite to each other along the first direction X, the first end plate 130 and the second end plate 140 are both provided with openings 150, and the housing body 100 is provided with a plurality of annular clamping grooves 160. At one end where the fluid inlet 210 and the fluid outlet 220 are provided, each of the locking grooves 160 surrounds two adjacent openings 150, and a part of the sealing member 300 is located in the locking groove 160 and another part is in contact with the baffle 200; at one end where the fluid inlet 210 and the fluid outlet 220 are not disposed, at the opening 150 corresponding to the fluid inlet 210, one card slot 160 surrounds the opening 150 corresponding to the fluid inlet 210, at the opening 150 corresponding to the fluid outlet 220, one card slot 160 surrounds the opening 150 corresponding to the fluid outlet 220, and at the other positions of the openings 150, each card slot 160 surrounds the adjacent two openings 150. Thereby forming a uniform sealing effect between the case main body 100 and the barrier 200 using the plurality of sealing members 300 and performing an important sealing at the fluid inlet 210 and the fluid outlet 220.

In order to solve the problem that the sealing effect is affected by the welding cracks caused by the fact that large welding stress and deformation are easily generated in the welding process of the motor shell, the embodiment of the application further provides a motor which comprises the motor shell in the embodiment.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An electric machine housing, comprising:

a housing main body provided with a fluid flow passage having an opening at least one end thereof in a first direction;

the baffle is connected to the opening, a fluid inlet and a fluid outlet which are mutually spaced are arranged on the baffle, and the fluid inlet and the fluid outlet are communicated with the fluid flow channel; and

and the sealing element is connected between the baffle plate and the shell main body in a sealing mode so as to realize the sealing connection of the baffle plate at the opening.

2. The electric machine housing according to claim 1, wherein the housing body includes first and second end plates that are opposed in a first direction, the first and/or second end plates having the openings provided thereon;

the shell body is provided with a clamping groove surrounding the opening, one part of the sealing element is positioned in the clamping groove, and the other part of the sealing element is in contact with the baffle.

3. The motor housing according to claim 1 or 2, wherein the fluid flow channel is provided with a heat dissipating surface that is raised or recessed relative to a sidewall of the fluid flow channel.

4. The electric machine housing according to claim 3, wherein the housing body includes an inner housing and an outer housing disposed outside the inner housing, the inner housing and the outer housing defining the annular fluid flow path therebetween.

5. The motor housing according to claim 4, further comprising a heat sink disposed within the fluid flow path, the heat sink having opposing first and second sides;

the first side surface is attached to one side surface of the inner shell facing the fluid flow channel, and a gap is formed between the second side surface and one side surface of the outer shell facing the fluid flow channel; or

The first side surface is attached to one side surface of the outer shell facing the fluid flow channel, and a gap is formed between the second side surface and one side surface of the inner shell facing the fluid flow channel.

6. The motor housing according to claim 5, wherein the second side is provided with grooves and/or projections extending lengthwise in the first direction, the groove walls of the grooves and/or the surfaces of the projections forming the heat dissipation surfaces.

7. The electric machine housing according to claim 6, wherein the number of the grooves or the projections is plural, and the grooves or the projections are arranged at intervals in a circumferential direction of the housing main body.

8. The motor housing of claim 5, wherein the heat sink at least partially surrounds the fluid flow passage in a circumferential direction of the fluid flow passage.

9. The motor housing of claim 8, wherein the heat sink includes a plurality of sub-heat sink portions and a plurality of connecting portions;

the plurality of radiating sub-parts are arranged at intervals along the circumferential direction of the fluid flow channel;

each connecting part is connected between two adjacent heat radiating sub-parts.

10. An electrical machine comprising a machine housing according to any one of claims 1 to 9.

Images