CN112787456A

CN112787456A - Vehicle, motor and shell structure

Info

Publication number: CN112787456A
Application number: CN202110085986.7A
Authority: CN
Inventors: 罗旋; 张鹏; 孔勇进; 夏继; 李鹏; 刘轲
Original assignee: Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd
Current assignee: Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-05-11
Anticipated expiration: 2041-01-22
Also published as: CN112787456B

Abstract

The invention relates to a vehicle, a motor and a shell structure, wherein the shell structure comprises a cavity body provided with a cavity, one end of the cavity body is provided with a first opening communicated with the cavity, the other end of the cavity body is provided with an end surface part arranged corresponding to a bearing, a first flow channel arranged along the axial direction of the cavity body, a first zigzag flow channel arranged on one side of the first flow channel and communicated with the first flow channel, a second zigzag flow channel arranged on the other side of the first flow channel and communicated with the first flow channel, and a second flow channel arranged in the end surface part and communicated with the first zigzag flow channel and the second zigzag flow channel, and the outer wall of the cavity body is further provided with a first flow guide opening communicated with the first flow channel and a second flow guide opening communicated with the second flow channel. The axial direction, circumference and the terminal surface of cavity all have the coolant circulation to can carry out abundant cooling to the spare part that sets up different positions in the cavity, the cooling effect is good, guarantees that each spare part homoenergetic can work at normal temperature within range.

Description

Vehicle, motor and shell structure

Technical Field

The invention relates to the technical field of driving motors, in particular to a vehicle, a motor and a shell structure.

Background

As a common driving element, an electric motor is widely used in various fields, for example, in various places of vehicles (new energy vehicles, fuel vehicles, or hybrid vehicles). With the continuous improvement of the function density of the motor, the cooling problem of the motor is increasingly prominent. The traditional solution is to arrange a corresponding cooling channel on the casing of the motor, and to cool the motor by means of water cooling. The cooling effect of traditional cooling runner is limited, can't effectually cool down the motor.

Disclosure of Invention

In view of this, it is necessary to provide a vehicle, a motor, and a housing structure for solving the problem of limited cooling effect.

The technical scheme is as follows:

on the one hand, a shell structure is provided, including the cavity that is equipped with the cavity, the one end of cavity is equipped with the intercommunication the first opening of cavity, the other end of cavity is equipped with the terminal surface portion that is used for corresponding the bearing setting, the inside of cavity is equipped with the edge the axial of cavity sets up first runner, set up in one side of first runner and with the first tortuous runner of first runner intercommunication, set up in the opposite side of first runner and with the second tortuous runner of first runner intercommunication and set up in the inside of terminal surface portion and with first tortuous runner with the second runner is the second runner that the second tortuous runner all communicates, the outer wall of cavity still be equipped with first water conservancy diversion mouth that first runner corresponds the intercommunication, and with the second water conservancy diversion mouth that the second runner corresponds the intercommunication.

The housing structure of the above embodiment, when in use, introduces the cooling medium into the first flow channel through the first diversion opening, and makes the cooling medium flow into the first zigzag flow channel and the second zigzag flow channel through the first flow channel, and then the cooling medium flows into the second flow channel at the end face portion from the first zigzag flow channel and the second zigzag flow channel, and finally the cooling medium flows out from the second flow channel through the second diversion opening. Cooling medium is at the inside flow in-process of cavity, not only can absorb and timely take away the heat that the spare part that the circumference lateral wall that corresponds the cavity set up produced, and can absorb and timely take away the heat that the bearing that corresponds the end face portion and set up, thereby make the axial of cavity, circumference and terminal surface all have the cooling medium circulation, thereby can carry out abundant cooling to the spare part that sets up different positions in the cavity, the cooling effect is good, guarantee that each spare part homoenergetic is at normal temperature within range work.

The technical solution is further explained below:

in one embodiment, the liquid outlet end of the first flow channel is disposed near the first opening and is communicated with both the first zigzag flow channel and the second zigzag flow channel, and the liquid inlet end of the first flow channel is disposed near the end surface and is communicated with the first diversion port.

In one embodiment, the liquid inlet end of the first zigzag flow channel is communicated with the liquid outlet end of the first flow channel, and the liquid outlet end of the first zigzag flow channel is communicated with the liquid inlet end of the second flow channel.

In one embodiment, the liquid inlet end of the second zigzag flow channel is communicated with the liquid outlet end of the first flow channel, and the liquid outlet end of the second zigzag flow channel is communicated with the liquid inlet end of the second flow channel.

In one embodiment, the first diversion opening is arranged on the circumferential side wall of the cavity, the second diversion opening is arranged on the end surface part, the central axis of the first diversion opening and the central axis of the second diversion opening are positioned on a first plane, and the center of the end surface part is positioned on the first plane; the first flow guide opening is a liquid inlet, the second flow guide opening is a liquid outlet, or the first flow guide opening is a liquid outlet, and the second flow guide opening is a liquid inlet.

In one embodiment, the end surface portion is provided with a mounting through hole for passing the rotating shaft therethrough, and the second flow channel includes a spiral flow channel disposed around a circumference of the mounting through hole.

In one of them embodiment, the cavity includes interior casing and shell body, interior casing is equipped with the cavity and is used for corresponding the first end that the bearing set up, the circumference lateral wall of interior casing is equipped with first runner, first tortuous runner and the tortuous runner of second, the outer wall of first end is equipped with the second runner, the shell body is equipped with and is used for cup jointing the chamber of cup jointing of interior casing and corresponding the second end that first end set up, the circumference lateral wall of shell body is equipped with first water conservancy diversion mouth, the outer wall of second end is equipped with the second water conservancy diversion mouth.

In one embodiment, the outer side wall of the inner shell is in sealing fit with the inner side wall of the sleeving cavity.

In another aspect, an electric machine is provided, comprising the housing structure.

The motor of above-mentioned embodiment, coolant can flow on axial, circumference and the terminal surface of shell structure's cavity to can set up the spare part at different positions in the cavity of cavity and carry out abundant cooling, the cooling effect is good, guarantees that each spare part homoenergetic enough works in normal temperature range.

In still another aspect, a vehicle is provided that includes the electric machine.

The vehicle of the embodiment has the advantages that the cooling effect of the motor is good, heat generated in the working process can be timely, quickly and effectively discharged, the motor can continuously and reliably work, and the vehicle can stably and reliably run.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a housing structure of an embodiment;

FIG. 2 is an exploded view of the housing structure of FIG. 1;

FIG. 3 is a schematic structural diagram of the housing structure of FIG. 1 from another perspective;

FIG. 4 is a schematic view of the inner housing of the housing construction of FIG. 1;

fig. 5 is a schematic structural diagram of an outer shell of the shell structure of fig. 1.

Description of reference numerals:

10. the shell structure comprises a shell structure body 100, a cavity body 101, an inner shell body 1011, a first end part 102, an outer shell body 1021, a second end part 1022, a sleeve cavity 110, a cavity 111, a first opening 120, an end face part 130, a first flow channel 140, a first zigzag flow channel 150, a second zigzag flow channel 160, a second flow channel 170, a first diversion port 180, a second diversion port 190 and an installation through hole.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with 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 invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1 to 3, in an embodiment, a casing structure 10 is provided, which can be applied to a motor, and the casing structure 10 can dissipate heat of components inside the motor, so as to ensure that the components inside the motor operate in a normal temperature range.

As shown in fig. 1 to 4, in one embodiment, the housing structure 10 includes a cavity 100 provided with a cavity 110, one end of the cavity 100 is provided with a first opening 111 communicating with the cavity 110, and the other end of the cavity 100 is provided with an end surface portion 120 for disposing corresponding to the bearing. Further, the cavity 100 is provided therein with a first flow channel 130 disposed along the axial direction of the cavity 100, a first meandering flow channel 140 disposed on one side of the first flow channel 130 and communicating with the first flow channel 130, a second meandering flow channel 150 disposed on the other side of the first flow channel 130 and communicating with the first flow channel 130, and a second flow channel 160 disposed inside the end surface portion 120 and communicating with both the first meandering flow channel 140 and the second meandering flow channel 150. The outer wall of the chamber 100 is further provided with a first guide opening 170 correspondingly communicated with the first flow passage 130, and a second guide opening 180 correspondingly communicated with the second flow passage 160.

It should be noted that, in the use process of the housing structure 10 of the above embodiment, the first flow guide port 170 and the second flow guide port 180 may be used as a liquid inlet and a liquid outlet, respectively, the first flow guide port 170 may be used as a liquid inlet and the second flow guide port 180 may be used as a liquid outlet, or the first flow guide port 170 may be used as a liquid outlet and the second flow guide port 180 may be used as a liquid inlet. The following description is given by taking the first fluid guiding opening 170 as a fluid inlet and the second fluid guiding opening 180 as a fluid outlet, and the description is only for the purpose of illustration and should not be construed as a limitation of the present application.

In the housing structure 10 of the above embodiment, when in use, the cooling medium is introduced into the first flow channel 130 through the first guide opening 170, the cooling medium flows into the first meandering flow channel 140 and the second meandering flow channel 150 through the first flow channel 130 (the flow path of the cooling medium is shown in the direction a of fig. 4), then the cooling medium flows into the second flow channel 160 of the end surface portion 120 from the first meandering flow channel 140 and the second meandering flow channel 150, and finally the cooling medium flows out from the second flow channel 160 through the second guide opening 180. Cooling medium is at the inside flow in-process of cavity 100, not only can absorb and timely take away the heat that the spare part that the circumference lateral wall that corresponds cavity 110 set up produced, and can absorb and timely take away the heat that the bearing that corresponds end face portion 120 sets up, thereby make cavity 100's axial, circumference and terminal surface all have the cooling medium circulation, thereby can carry out abundant cooling to the spare part that sets up different positions in cavity 110, the cooling effect is good, guarantee that each spare part homoenergetic can work at normal temperature within range.

The component disposed corresponding to the circumferential sidewall of the cavity 110 may be a stator core disposed in the cavity 110, or the like. The cooling medium can cool the stator core, the stator end portion, and the rotor bearing in the axial, circumferential, and end surface circulation processes of the cavity 100. The traditional cooling flow channel can only cool the stator core, and the shell structure 10 of the above embodiment can also cool the stator end and the rotor bearing arranged corresponding to the end face 120, so that the cooling range is large, the cooling effect is good, and the use requirement of high functional density of the motor is met. The circumferential sidewall refers to a sidewall in an axial direction of the corresponding cavity 100.

It should be noted that the cooling medium may be water, oil, a liquid of a mixture or a plurality of monomers such as ethylene glycol, and only needs to be sufficient to achieve a cooling effect. The cavity 100 may be made of aluminum alloy, cast steel or nodular cast iron, and only needs to be satisfied. The end face portion 120 may be a base or flange structure disposed at an end of the chamber 100. One side and the other side of the first flow channel 130 refer to one side and the other opposite side of the decomposition plane with any one plane where the axis of the first flow channel 130 is located as an interface. The first meandering flow path 140 and the second meandering flow path 150 are preferably symmetrically arranged about the interface. The inside of the cavity 100 refers to an area between the outer surface of the cavity 100 and the inner surface of the cavity 110, and similarly, the inside of the end surface 120 refers to an area between the outer surface of the end surface 120 and the inner surface of the cavity 110, and it is only necessary that the first flow channel 130, the first meandering flow channel 140, the second meandering flow channel 150, and the second flow channel 160 do not leak.

The opening length of the first flow channel 130 can be flexibly adjusted or designed according to the actual installation and distribution of the components in the cavity 110.

As shown in fig. 2 and 4, in one embodiment, the liquid outlet end of the first flow channel 130 is disposed near the first opening 111 and is communicated with both the first zigzag flow channel 140 and the second zigzag flow channel 150. The inlet end of the first flow channel 130 is disposed near the end surface portion 120 and communicates with the first diversion port 170. Thus, the first diversion port 170 may be disposed on the circumferential sidewall of the cavity 100 as a liquid inlet, and the second diversion port 180 may be disposed on the end surface portion 120 as a liquid outlet. The cooling medium enters the first flow channel 130 from the first diversion port 170 close to the end surface part 120 and flows towards the direction close to the first opening 111, the cooling medium is divided into the first zigzag flow channel 140 and the second zigzag flow channel 150 at the liquid outlet end of the first flow channel 130 and flows towards the direction close to the end surface part 120 through the first zigzag flow channel 140 and the second zigzag flow channel 150, and finally flows into the second flow channel 160 of the end surface part 120 and flows out from the second diversion port 180 arranged on the end surface part 120, so that the cooling medium flows through the cavity 100 in the axial direction, the circumferential direction and the end surface position, the cooling range is wide, and the cooling effect is good.

The first meandering flow channel 140 and the second meandering flow channel 150 may have an S shape, a W shape, a U shape, a V shape, or other shapes that present a curved trajectory, and only need to satisfy that the cooling medium can cool the components arranged in the circumferential direction of the cavity 100 when circulating in the first meandering flow channel 140 and the second meandering flow channel 150. As shown in fig. 4, for example, the first meandering flow passage 140 may include a first straight flow passage 141 and a second straight flow passage 142 which are arranged at intervals, and an arc flow passage 143 for communicating the first straight flow passage 141 and the second straight flow passage 142, wherein the cooling medium in the first straight flow passage 141 flows in a first direction, and the cooling medium in the second straight flow passage 142 flows in a direction opposite to the first direction, so that a flow path of the cooling medium is extended, and a cooling effect is enhanced; of course, the number of the first linear flow channel 141, the second linear flow channel 142, and the arc flow channel 143 may be flexibly designed or selected according to actual use conditions, and only when the cooling medium circulates in the first zigzag flow channel 140, the components arranged in the circumferential direction of the cavity 100 may be cooled. The second meandering flow passage 150 is similar in construction to the first meandering flow passage 140, and will not be described again.

As shown in fig. 4, specifically, the inlet end of the first meandering flow channel 140 communicates with the outlet end of the first flow channel 130. The outlet end of the first meandering flow passage 140 communicates with the inlet end of the second flow passage 160. Thus, the cooling medium enters the first flow channel 130 from the first flow guide port 170 arranged near the end surface portion 120 and flows towards the direction near the first opening 111, the cooling medium is divided into the first zigzag flow channel 140 at the liquid outlet end of the first flow channel 130 and flows towards the direction near the end surface portion 120 through the first zigzag flow channel 140, and finally flows into the second flow channel 160 on the end surface portion 120, so that the cooling medium flows through the cavity 100 in the axial direction, the circumferential direction and the end surface position, the cooling range is wide, and the cooling effect is good.

Specifically, in one embodiment, as shown in fig. 4, the inlet end of the second meandering flow channel 150 communicates with the outlet end of the first flow channel 130. The outlet end of the second meandering flow passage 150 communicates with the inlet end of the second flow passage 160. Thus, the cooling medium enters the first flow channel 130 from the first flow guide port 170 arranged near the end surface portion 120 and flows towards the direction near the first opening 111, the cooling medium is divided into the second zigzag flow channel 150 at the liquid outlet end of the first flow channel 130 and flows towards the direction near the end surface portion 120 through the second zigzag flow channel 150, and finally flows into the second flow channel 160 on the end surface portion 120, so that the cooling medium flows through the cavity 100 in the axial direction, the circumferential direction and the end surface position, the cooling range is wide, and the cooling effect is good.

It should be noted that, the liquid outlet end of the first flow channel 130 is disposed close to the first opening 111, which means that a certain gap is formed between the liquid outlet end of the first flow channel 130 and a plane where the first opening 111 is located, and the size of the gap can be flexibly adjusted or designed according to actual use conditions, and only the requirement that no cooling medium leaks is required; similarly, the inlet end of the first flow channel 130 is close to the end surface portion 120, which means that a certain gap is formed between the inlet end of the first flow channel 130 and the end surface portion 120, and the size of the gap can be flexibly adjusted or designed according to actual use conditions, so that only the requirement that the cooling medium leakage cannot occur is met.

As shown in fig. 4, in one embodiment, the inlet end of the first meandering flow channel 140 communicates with the outlet end of the first flow channel 130. The outlet end of the first meandering flow passage 140 communicates with the inlet end of the second flow passage 160. The inlet end of the second meandering flow passage 150 communicates with the outlet end of the first flow passage 130. The outlet end of the second meandering flow passage 150 communicates with the inlet end of the second flow passage 160. Also, the first and second

meandering flow passages

140 and 150 are symmetrically disposed with respect to a plane in which the axis of the first flow passage 130 and the axis of the cavity 100 are located. Therefore, the cooling medium can better flow through the cavity 100 in the axial direction, the circumferential direction and the end face, the cooling range is large, and the cooling effect is good.

As shown in fig. 2 and fig. 4, optionally, the first diversion port 170 is disposed on a circumferential sidewall of the cavity 100, and the first diversion port 170 is a liquid inlet. The second diversion opening 180 is disposed on the end surface portion 120, and the second diversion opening 180 is a liquid outlet. So for the cooling runner of the reduction gear that the outside corresponding terminal surface portion 120 of cavity 100 set up can communicate with second water conservancy diversion mouth 180, make the cooling runner of the various controllers that the outside corresponding circumference lateral wall of cavity 100 set up can communicate with first water conservancy diversion mouth 170, thereby make the motor can carry out systematized integration with all kinds of devices, the commonality is strong. Further, in order to facilitate the communication between the first diversion port 170 and the second diversion port 180 and the cooling flow channels of various devices, auxiliary communication elements such as a connecting pipeline may be additionally disposed at the first diversion port 170 and/or the second diversion port 180.

The relative position between the first diversion port 170 and the second diversion port 180 can be flexibly selected and designed according to actual use conditions, and only the requirement that the cooling medium can flow in the axial direction, the circumferential direction and the end face position of the cavity 100 is met.

In one embodiment, the central axis of the first flow guide port 170 and the central axis of the second flow guide port 180 lie on a first plane, on which the center of the end surface portion 120 lies. So, make first water conservancy diversion mouth 170 and second water conservancy diversion mouth 180 can distribute along the diametric (al) of terminal surface portion 120, make the interval between first water conservancy diversion mouth 170 and the second water conservancy diversion mouth 180 the biggest, make cooling medium along the radial flow distance of cavity 100 the longest, guarantee that cooling medium can the biggest length flow through at axial direction, circumferencial direction and the terminal surface position of cavity 100, the cooling effect is better.

As shown in fig. 1, in order to avoid interference with the mounting of the components, a mounting through hole 190 through which a member such as a rotating shaft is inserted may be provided in the end surface portion 120. Here, in order to enhance the cooling effect of the cooling medium in the second flow passage 160 of the end surface portion 120, the second flow passage 160 may be a spiral flow passage, and the spiral flow passage may be disposed around the circumference of the mounting through hole 190. Therefore, the extension length of the second flow channel 160 on the end surface portion 120 is extended, so that the cooling medium can sufficiently cool the bearing in the internal circulation process of the end surface portion 120, and the cooling effect is good. Of course, in other embodiments, the second flow channel 160 may also be other forms of extended tracks, and is not limited herein.

In order to reduce the processing difficulty, the chamber 100 may be formed in a split type by assembling two components.

As shown in fig. 2, 4 and 5, in one embodiment, the chamber 100 includes an inner housing 101 and an outer housing 102. The inner housing 101 is provided with a cavity 110 and a first end 1011 for arranging in correspondence with the bearing. The circumferential side wall of the inner casing 101 is provided with a first flow passage 130, a first zigzag flow passage 140 and a second zigzag flow passage 150. The outer wall of the first end 1011 is provided with a second flow passage 160. The outer housing 102 has a receiving cavity 1022 for receiving the inner housing 101 and a second end 1021 corresponding to the first end 1011. The circumferential sidewall of the outer shell 102 is provided with a first diversion opening 170. The outer wall of the second end 1021 is provided with a second diversion opening 180. Thus, the outer shell 102 is sleeved on the outer side wall of the inner shell 101, so that the first diversion port 170 on the outer shell 102 is communicated with the first flow channel 130 on the circumferential side wall of the inner shell 101, and the second diversion port 180 on the second end 1021 of the outer shell 102 is communicated with the second flow channel 160, and the assembly of the cavity 100 can be completed, which is simple and convenient. In addition, the first flow channel 130, the first zigzag flow channel 140, the second zigzag flow channel 150 and the second flow channel 160 can be processed on the outer side wall of the inner shell 101 by adopting the processes of etching, stamping, milling and the like, so that the processing difficulty is reduced, and the processing cost is saved. When the inner housing 101 is installed in the receiving cavity 1022 of the outer housing 102, the first end 1011 and the second end 1021 cooperate to form the end 120. The first end portion 1011 and the second end portion 1021 are each provided with a through hole to communicate with each other to form the mounting through hole 190.

Further, the outer side wall of the inner housing 101 is in sealing engagement with the inner side wall of the socket 1022. So, install interior casing 101 in the chamber 1022 that cup joints of shell body 102 for the circumference lateral wall of interior casing 101 and the outer wall of first end 1011 all with the inside wall laminating of cup jointing chamber 1022, adopt modes such as friction stir welding again to make the outside wall of interior casing 101 and the inseparable even as an organic whole of the inside wall of cup jointing chamber 1022, sealing performance is good. Of course, in other embodiments, after the outer side wall of the inner housing 101 is attached to the inner side wall of the socket 1022, sealing engagement may be achieved by sealing with a sealing ring, screwing, or the like.

In one embodiment, there is also provided an electric machine comprising the housing structure 10 of any of the above embodiments.

In the motor of the embodiment, the cooling medium can flow in the axial direction, the circumference and the end face of the cavity 100 of the housing structure 10, so that the components arranged at different positions in the cavity 110 of the cavity 100 can be sufficiently cooled, the cooling effect is good, and the components can be ensured to work within a normal temperature range.

It should be noted that the housing structure 10 of the above embodiment is suitable for various types of motors, and is particularly suitable for a drive motor of a new energy automobile.

In one embodiment, a vehicle is also provided, including the electric machine of the above embodiment.

It should be noted that the motor of the above embodiment is not limited to be used in a vehicle, and may also be used in various kinds of engineering machinery or other mechanized equipment meeting the use requirements.

The "certain body" and the "certain portion" may be a part corresponding to the "member", that is, the "certain body" and the "certain portion" may be integrally formed with the other part of the "member"; the "part" can be made separately from the "other part" and then combined with the "other part" into a whole. The expressions "a certain body" and "a certain part" in the present application are only one example, and are not intended to limit the scope of the present application for reading convenience, and the technical solutions equivalent to the present application should be understood as being included in the above features and having the same functions.

It should be noted that, the components included in the "unit", "assembly", "mechanism" and "device" of the present application can also be flexibly combined, i.e., can be produced in a modularized manner according to actual needs, so as to facilitate the modularized assembly. The division of the above-mentioned components in the present application is only one example, which is convenient for reading and is not a limitation to the protection scope of the present application, and the same functions as the above-mentioned components should be understood as equivalent technical solutions in the present application.

In the description of the present invention, it is to be understood that the terms "central," "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 invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

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 implicitly indicating 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 invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, 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 an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate 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," "disposed on," "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. Further, when one element is considered as "fixed transmission connection" with another element, the two elements may be fixed in a detachable connection manner or in an undetachable connection manner, and power transmission can be achieved, such as sleeving, clamping, integrally-formed fixing, welding and the like, which can be achieved in the prior art, and is not cumbersome. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It should also be understood that in explaining the connection relationship or the positional relationship of the elements, although not explicitly described, the connection relationship and the positional relationship are interpreted to include an error range which should be within an acceptable deviation range of a specific value determined by those skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, without limitation.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, 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 inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a shell structure, its characterized in that, including the cavity that is equipped with the cavity, the one end of cavity is equipped with the intercommunication the first opening of cavity, the other end of cavity is equipped with the end face portion that is used for corresponding the bearing setting, the inside of cavity is equipped with the edge the axial of cavity sets up first runner, set up in one side of first runner and with the first tortuous runner of first runner intercommunication, set up in the opposite side of first runner and with the second tortuous runner of first runner intercommunication and set up in the inside of end face portion and with first tortuous runner with the second runner of second tortuous runner all intercommunication second runner, the outer wall of cavity still be equipped with first flow guide mouth that first runner corresponds the intercommunication, and with the second flow guide mouth that the second runner corresponds the intercommunication.

2. The housing structure of claim 1 wherein the outlet end of the first flow path is disposed proximate to the first opening and in communication with both the first tortuous flow path and the second tortuous flow path, and the inlet end of the first flow path is disposed proximate to the end surface and in communication with the first diversion port.

3. The housing structure according to claim 2 wherein the inlet end of the first serpentine flow path is in communication with the outlet end of the first flow path and the outlet end of the first serpentine flow path is in communication with the inlet end of the second flow path.

4. The housing structure according to claim 2 wherein the inlet end of the second serpentine flow path communicates with the outlet end of the first flow path and the outlet end of the second serpentine flow path communicates with the inlet end of the second flow path.

5. The shell structure of claim 1, wherein the first diversion opening is disposed on a circumferential side wall of the cavity, the second diversion opening is disposed on the end face portion, a central axis of the first diversion opening and a central axis of the second diversion opening are located on a first plane, and a center of the end face portion is located on the first plane; the first flow guide opening is a liquid inlet, the second flow guide opening is a liquid outlet, or the first flow guide opening is a liquid outlet, and the second flow guide opening is a liquid inlet.

6. The casing structure according to claim 1, wherein the end surface portion is provided with a mounting through-hole for passing the rotating shaft therethrough, and the second flow passage comprises a spiral flow passage provided around a circumference of the mounting through-hole.

7. The shell structure according to any one of claims 1 to 6, wherein the cavity includes an inner shell and an outer shell, the inner shell has the cavity and a first end portion corresponding to a bearing arrangement, the circumferential sidewall of the inner shell has the first flow passage, the first zigzag flow passage and the second zigzag flow passage, the outer wall of the first end portion has the second flow passage, the outer shell has a socket cavity for socket-connecting the inner shell and a second end portion corresponding to the first end portion, the circumferential sidewall of the outer shell has the first diversion port, and the outer wall of the second end portion has the second diversion port.

8. The shell structure of claim 7, wherein an outer sidewall of the inner shell sealingly engages an inner sidewall of the socket cavity.

9. An electrical machine, characterized in that it comprises a housing structure according to any one of claims 1 to 8.

10. A vehicle characterized by comprising an electric machine according to claim 9.