Motor shell, hub motor and vehicle

Abstract

The invention relates to the technical field of motor heat dissipation, and provides a motor shell, a hub motor and a vehicle, the motor shell comprises a shell body and a cover plate, the radial edge of the shell body is provided with a groove, the groove extends along the circumferential direction of the shell body, the cover plate is fixed on the shell body and covers the opening of the groove, and the shell body and the cover plate define a cooling flow channel; the motor housing is provided with a fluid inlet and a fluid outlet, and the fluid inlet and the fluid outlet are respectively communicated with the head end and the tail end of the cooling flow channel. According to the motor shell, the groove is formed in the radial edge of the shell body, and the cover plate covers the opening of the groove to form the cooling flow channel, so that the cooling medium exchanges heat with heat generated by the stator assembly and the rotor assembly in the motor shell, rapid heat dissipation of the hub motor is achieved, the temperature rise of the hub motor is within the working range, and the service life of the hub motor is prolonged. The problem that the temperature rise of the hub motor cannot be ensured to be within the working range through heat dissipation of the motor shell is solved.

Description

Technical Field

[0001] The present application relates to the technical field of motor heat dissipation, and in particular to a motor housing, a hub motor and a vehicle. Background Art

[0002] A hub motor is a motor that integrates the vehicle's power system, transmission system, and brake system and is installed on the vehicle's wheel hub. At present, the hub motor commonly used in low-speed electric bicycles has a low speed and power. Therefore, the hub motor generates less heat, which can be easily dissipated to the external environment through the motor housing, so that the temperature rise of the hub motor is within the working range, ensuring the normal operation of the hub motor.

[0003] The wheel hub motor used in electric vehicles has a high speed and power, so it generates a lot of heat. Heat dissipation through the motor housing itself cannot ensure that the temperature rise of the wheel hub motor is within the working range, which affects the normal operation of the wheel hub motor. Summary of the invention

[0004] In view of this, embodiments of the present application provide a motor housing, a hub motor and a vehicle to solve the problem that the heat dissipation of the motor housing itself cannot ensure that the temperature rise of the hub motor is within the working range.

[0005] The first aspect of the present application proposes a motor housing, comprising a housing body and a cover plate, wherein the radial edge of the housing body has a groove, the groove extends along the circumference of the housing body, the cover plate is fixed on the housing body and covers the opening of the groove, the housing body and the cover plate form a cooling channel; the motor housing has a fluid inlet and a fluid outlet, the fluid inlet and the fluid outlet are respectively connected to the head end and the end end of the cooling channel.

[0006] The beneficial effects of the motor housing provided by the embodiment of the present application are as follows: by setting a groove on the radial edge of the housing body and sealing the opening of the groove with a cover plate to form a cooling channel, heat is exchanged between the cooling medium and the heat generated by the stator assembly and the rotor assembly in the motor housing, so as to achieve rapid heat dissipation of the hub motor, so that the temperature rise of the hub motor is within the working range, and the problem that the heat dissipation of the motor housing itself cannot ensure that the temperature rise of the hub motor is within the working range is solved. Moreover, since the stator assembly and / or the rotor assembly are usually arranged close to the edge of the motor housing, arranging the cooling channel close to the edge of the motor housing is more conducive to heat exchange.

[0007] In some embodiments, an opening of the groove faces one axial side of the housing body.

[0008] In some embodiments, the motor housing further includes a plurality of first water baffles and a plurality of second water baffles, and the plurality of first water baffles and the plurality of second water baffles are alternately arranged in the groove along the circumference of the housing body; a first channel is formed at the first end of the first water baffle, and a second channel is formed at the second end of the second water baffle, and the first end of the first water baffle and the second end of the second water baffle are spaced apart along the axial direction of the housing body so that the cooling flow channel is in a zigzag shape.

[0009] In some embodiments, the groove includes an outer peripheral groove segment and a side groove segment connected to the outer peripheral groove segment, the first water barrier includes a first outer peripheral segment within the outer peripheral groove segment and a first side segment within the side groove segment; the second water barrier includes a second outer peripheral segment within the outer peripheral groove segment and a second side segment within the side groove segment.

[0010] In some embodiments, the peripheral groove segment spans across the entire peripheral surface of the shell body along the axial direction of the shell body.

[0011] In some embodiments, the first channel is formed by the first side segment, the outer shell body, and the cover plate; and / or the second channel is formed by the second outer peripheral segment and the outer shell body.

[0012] In some embodiments, the first side segment has a first through hole, and the first through hole constitutes the first channel; and / or the second peripheral segment has a second through hole, and the second through hole constitutes the second channel.

[0013] In some embodiments, the groove is an annular groove, and the cover plate is an annular plate; the motor housing also includes a third water barrier, which is arranged in the groove and between the fluid inlet and the fluid outlet, and is used to block the fluid flow between the fluid inlet and the fluid outlet.

[0014] In some embodiments, the first water barrier is integrally formed in the groove, and / or the second water barrier is integrally formed in the groove.

[0015] In some embodiments, the second water barrier is fixedly connected in the groove.

[0016] In some embodiments, a slot is provided on one of the slot wall of the groove and the second water barrier, and a snap-fitting portion that snaps into engagement with the slot is provided on the other of the slot wall of the groove and the second water barrier.

[0017] In some embodiments, the motor housing further includes a sealing member disposed between the clamping portion and the clamping groove.

[0018] A second aspect of the present application provides a hub motor, which includes a stator assembly, a rotor assembly and a motor housing as described in the first aspect, wherein the stator assembly and the rotor assembly are both disposed in the motor housing.

[0019] The hub motor adopts any one or more embodiments of the above-mentioned motor housing, and thus has the beneficial effects of the above-mentioned embodiments, which will not be described one by one here.

[0020] A third aspect of the present application provides a vehicle, which includes a wheel hub motor as described in the second aspect.

[0021] The vehicle adopts any one or more embodiments of the above-mentioned hub motor, and thus has the beneficial effects of the above-mentioned embodiments, which will not be described one by one here.

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or conventional technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a schematic diagram of the structure of a motor housing provided in some embodiments of the present application;

[0025] Figure 2 yes Figure 1 The schematic diagram of the structure of the motor housing after the cover plate is removed is shown;

[0026] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0027] Figure 4 yes Figure 3 A schematic diagram of the structure of the second water barrier;

[0028] Figure 5 is a schematic structural diagram of a motor housing from another perspective provided in some embodiments of the present application;

[0029] Figure 6 yes Figure 5 The schematic diagram of the structure of the motor housing in the BB direction shown;

[0030] Figure 7 yes Figure 5 The schematic diagram of the structure of the motor housing in the CC direction is shown;

[0031] Figure 8 It is a schematic diagram of the structure of the hub motor provided in some embodiments of the present application.

[0032] The meanings of the marks in the figure are:

[0033] 100. Hub motor;

[0034] 10. Motor housing; 11. Housing body; 111. Groove; 1111. Peripheral groove section; 1112. Side groove section; 1113. Clamping groove; 112. Fluid inlet; 113. Fluid outlet; 12. Cover plate; 13. First water barrier; 131. First peripheral section; 132. First side section; 14. Second water barrier; 141. Second peripheral section; 142. Second side section; 15. Cooling channel; 16. Third water barrier; 17. First channel; 18. Second channel; 19. Sealing member;

[0035] 20. Stator assembly;

[0036] 30. Rotor assembly. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0043] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0044] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0045] The first embodiment of the present application provides a motor housing. Figure 1 and Figure 8The motor housing 10 includes a housing body 11 and a cover plate 12; the radial edge of the housing body 11 has a groove 111, and the groove 111 extends along the circumference of the housing body 11. The cover plate 12 is fixed on the housing body 11 and covers the opening of the groove 111. The housing body 11 and the cover plate 12 form a cooling channel 15; the motor housing 10 has a fluid inlet 112 and a fluid outlet 113, and the fluid inlet 112 and the fluid outlet 113 are respectively connected to the head end and the end of the cooling channel 15.

[0046] The radial edge of the shell body 11 refers to an edge away from the central axis of the shell body 11 in the radial direction of the shell body 11 .

[0047] Among them, the opening of the groove 111 can be toward the radial outside of the shell body 11, that is, the cover plate 12 is fixed on the shell body 11 along the radial direction of the shell body 11 to cover the opening of the groove 111; the opening of the groove 111 can also be toward the axial side of the shell body 11, that is, the cover plate 12 is fixed on the shell body 11 along the axial direction of the shell body 11 to cover the opening of the groove 111.

[0048] The groove 111 extends along the circumference of the shell body 11. It can be understood that the groove 111 is a C-shaped groove or an annular groove, and correspondingly, the cover plate 12 is a C-shaped plate or an annular plate; or, the groove 111 includes two arc grooves with a central angle less than 180°. In this case, two groups of fluid inlets 112 and fluid outlets 113 are provided, and each group of fluid inlets 112 and fluid outlets 113 corresponds to the head end and the end end of an arc groove.

[0049] The cover plate 12 is fixed on the shell body 11. It can be understood that the cover plate 12 can be fixed on the shell body 11 by welding, fastener connection, clamping, riveting, crimping, bonding, interference connection, etc.

[0050] The motor housing 10 has a fluid inlet 112 and a fluid outlet 113, which can be understood as the housing body 11 having both the fluid inlet 112 and the fluid outlet 113; or, the cover plate 12 having both the fluid inlet 112 and the fluid outlet 113; or, the housing body 11 has the fluid inlet 112 and the cover plate 12 has the fluid outlet 113; or, the housing body 11 has the fluid outlet 113 and the cover plate 12 has the fluid inlet 112.

[0051] The fluid inlet 112 and the fluid outlet 113 are respectively connected to the head end and the end end of the cooling channel 15 , that is, the cooling medium enters the head end of the cooling channel 15 from the fluid inlet 112 , and then flows from the head end of the cooling channel 15 to the end end of the cooling channel 15 , and finally flows out from the fluid outlet 113 .

[0052] The cooling medium may be a cooling liquid or a cooling gas. When the cooling medium is a cooling liquid, the cooling medium may be cooling water, so that the cost can be reduced while ensuring the heat dissipation efficiency.

[0053] The motor housing 10 provided by the embodiment of the present application has the beneficial effects of: by setting a groove 111 on the radial edge of the housing body 11, and by covering the opening of the groove 111 with a cover plate 12 to form a cooling channel 15, so that the heat generated by the stator assembly 20 and / or the rotor assembly 30 in the motor housing 10 is exchanged with the cooling medium, the hub motor 100 is rapidly cooled, and the temperature rise of the hub motor 100 is within the working range, which solves the problem that the heat dissipation of the motor housing 10 itself cannot ensure that the temperature rise of the hub motor 100 is within the working range. Moreover, since the stator assembly 20 and the rotor assembly 30 are usually arranged close to the edge of the motor housing 10, arranging the cooling channel 15 close to the edge of the motor housing 10 is more conducive to heat exchange.

[0054] Please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 In some embodiments, the motor housing 10 further includes a plurality of first water baffles 13 and a plurality of second water baffles 14, and the plurality of first water baffles 13 and the plurality of second water baffles 14 are alternately arranged in the groove 111 along the circumference of the housing body 11; a first channel 17 is formed at the first end of the first water baffle 13, and a second channel 18 is formed at the second end of the second water baffle 14, and the first end of the first water baffle 13 and the second end of the second water baffle 14 are spaced apart along the axial direction of the housing body 11 so that the cooling channel 15 is in a zigzag shape.

[0055] It can be understood that the first water barrier 13 and the second water barrier 14 can be water barrier plates, water barrier blocks, etc. The shapes of the first water barrier 13 and the second water barrier 14 can be the same or different.

[0056] The first channel 17 can connect the first water blocking member 13 to both sides of the outer shell body 11 in the circumferential direction, and the second channel 18 can connect the second water blocking member 14 to both sides of the outer shell body 11 in the circumferential direction.

[0057] Multiple first water barrier members 13 and multiple second water barrier members 14 are alternately arranged in the groove 111 along the circumference of the outer shell body 11. It can be understood that a second water barrier member 14 is provided between any two adjacent first water barrier members 13, or a first water barrier member 13 is provided between any two adjacent second water barrier members 14.

[0058] The first end of the first water baffle 13 and the second end of the second water baffle 14 are spaced apart along the axial direction of the outer shell body 11. It can be understood that the first end of the first water baffle 13 and the first end of the second water baffle 14 are at the same end, and the second end of the first water baffle 13 and the second end of the second water baffle 14 are at the same end, that is, the first channel 17 and the second channel 18 are spaced apart in the axial direction of the outer shell body 11. The larger the axial spacing distance between the first channel 17 and the second channel 18 in the outer shell body 11, the larger the flow area of ​​the cooling medium in the cooling channel 15, the longer the flow time, and the better the cooling effect on the stator assembly 20 and the rotor assembly 30.

[0059] Based on the above solution, by designing the cooling channel 15 into a zigzag shape, the length of the cooling channel 15 is increased, thereby increasing the flow time of the cooling medium in the cooling channel 15, ensuring that the cooling medium is fully heat-exchanged with the heat generated by the stator assembly 20 and the rotor assembly 30 in the motor housing 10, and further improving the heat dissipation efficiency of the hub motor 100. In addition, the first water barrier 13 and the second water barrier 14 can also act as reinforcing ribs to increase the structural strength of the motor housing 10.

[0060] Please refer to Figures 5 to 7 In some embodiments, the groove 111 includes an outer peripheral groove segment 1111 and a side groove segment 1112 connected to the outer peripheral groove segment 1111, the first water barrier 13 includes a first outer peripheral segment 131 in the outer peripheral groove segment 1111 and a first side segment 132 in the side groove segment 1112; the second water barrier 14 includes a second outer peripheral segment 141 in the outer peripheral groove segment 1111 and a second side segment 142 in the side groove segment 1112.

[0061] The outer peripheral groove section 1111 is located at the outer peripheral side of the shell body 11 , and the side groove section 1112 is located at one axial side of the shell body 11 , that is, the cross section of the groove 111 is substantially L-shaped.

[0062] Optionally, the peripheral groove segment 1111 spans the entire peripheral surface of the shell body 11 along the axial direction of the shell body 11 to increase the cooling area and improve the heat dissipation efficiency. Of course, the peripheral groove segment 1111 can also span half of the peripheral surface of the shell body 11 along the axial direction of the shell body 11.

[0063] The first water blocking member 13 includes a first outer peripheral section 131 in the outer peripheral groove section 1111 and a first side section 132 in the side groove section 1112, that is, the first water blocking member 13 is an L-shaped structure. Optionally, the first outer peripheral section 131 extends along the axial direction of the outer shell body 11, and the first side section 132 extends along the radial direction of the outer shell body 11.

[0064] The second water blocking member 14 includes a second outer peripheral section 141 in the outer peripheral groove section 1111 and a second side section 142 in the side groove section 1112, that is, the second water blocking member 14 is an L-shaped structure. Optionally, the second outer peripheral section 141 extends along the axial direction of the outer shell body 11, and the second side section 142 extends along the radial direction of the outer shell body 11.

[0065] Based on the above solution, the cooling medium can flow around the outer periphery and the side of the housing body 11 to increase the heat dissipation area and improve the heat dissipation efficiency of the hub motor 100 .

[0066] In other embodiments, the groove 111 may include the peripheral groove segment 1111 but not the side groove segment 1112 ; or, the groove 111 may include the side groove segment 1112 but not the peripheral groove segment 1111 .

[0067] Please refer to Figure 6 and Figure 7 In some embodiments, when the groove 111 includes a peripheral groove segment 1111 and a side groove segment 1112 , the first channel 17 is formed by the first side segment 132 , the outer shell body 11 , and the cover plate 12 ; the second channel 18 is formed by the second peripheral segment 141 and the outer shell body 11 .

[0068] The size of the first channel 17 may be determined according to the length of the first side segment 132 in the radial direction of the shell body 11 and the width of the first side segment 132 in the axial direction of the shell body 11 .

[0069] The size of the second channel 18 may be determined according to the length of the second outer peripheral section 141 in the axial direction of the shell body 11 and the width of the second outer peripheral section 141 in the radial direction of the shell body 11 .

[0070] Based on the above solution, the first channel 17 and the second channel 18 can be formed without drilling holes in the first side segment 132 and the second peripheral segment 141 , thereby simplifying the processing steps.

[0071] In other embodiments, when the first channel 17 is surrounded by the first side segment 132, the outer shell body 11, and the cover plate 12, the second peripheral segment 141 has a second through hole, and the second through hole constitutes the second channel 18; or, when the second channel 18 is surrounded by the second peripheral segment 141 and the outer shell body 11, the first side segment 132 has a first through hole, and the first through hole constitutes the first channel 17; or, the first side segment 132 has a first through hole, and the first through hole constitutes the first channel 17, and the second peripheral segment 141 has a second through hole, and the second through hole constitutes the second channel 18.

[0072] Please refer to Figure 1 and Figure 2In some embodiments, the groove 111 is an annular groove, and the cover plate 12 is an annular plate; the motor housing 10 also includes a third water barrier 16, which is arranged in the groove 111 and located between the fluid inlet 112 and the fluid outlet 113, and is used to block the fluid flow between the fluid inlet 112 and the fluid outlet 113.

[0073] The third water barrier 16 may be a water barrier plate, a water barrier block or the like.

[0074] It can be understood that the third water barrier 16 can be integrally formed in the groove 111, and the third water barrier 16 can also be fixed in the groove 111 by welding, fastener connection, clamping, riveting, crimping, bonding, interference connection, etc.

[0075] At this time, the fluid inlet 112 and the fluid outlet 113 are close to each other, and the third water barrier 16 is located between the fluid inlet 112 and the fluid outlet 113 and is used to separate the fluid inlet 112 and the fluid outlet 113. It can be understood that after the cooling medium enters the cooling channel 15 from the fluid inlet 112, it will not flow out directly from the fluid outlet 113, but will flow from the head end of the cooling channel 15 to the end of the cooling channel 15, and then flow out from the fluid outlet 113.

[0076] In the case where the groove 111 includes the outer peripheral groove section 1111 and the side groove section 1112 connected to the outer peripheral groove section 1111, the third water blocking member 16 includes the third outer peripheral section in the outer peripheral groove section 1111 and the third side section in the side groove section 1112, that is, the third water blocking member 16 is an L-shaped structure. Optionally, the third outer peripheral section is arranged along the axial direction of the outer shell body 11, and the third side section extends along the radial direction of the outer shell body 11.

[0077] Based on the above scheme, the cooling channel 15 surrounded by the housing body 11 and the cover plate 12 is an annular channel to fully utilize the edge of the motor housing 10. Therefore, the length of the cooling channel 15 is increased, thereby increasing the flow time of the cooling medium in the cooling channel 15, ensuring sufficient heat exchange between the cooling medium and the heat generated by the stator assembly 20 and the rotor assembly 30 in the motor housing 10, thereby further improving the heat dissipation efficiency of the hub motor 100.

[0078] In other embodiments, the groove 111 is a C-shaped groove, and the cover plate 12 is a C-shaped plate. In this case, the space between the fluid inlet 112 and the fluid outlet 113 is a solid body of the shell body 11, and there is no need to design the third water barrier 16.

[0079] Please refer to Figure 2 and Figure 3 In some embodiments, the first water barrier 13 is integrally formed in the groove 111 .

[0080] Optionally, all first water blocking members 13 are integrally formed in the groove 111. Of course, part of the first water blocking member 13 may be integrally formed in the groove 111; part of the first water blocking member 13 may be fixed in the groove 111, for example, the first water blocking member 13 may be fixed in the groove 111 by welding, fastener connection, clamping, riveting, crimping, bonding, interference connection, etc.

[0081] Based on the above solution, the first water barrier 13 is integrally formed on the groove 111, which can reduce the number of parts and facilitate the assembly of the motor housing 10; moreover, there is no need to consider the sealing problem between the first water barrier 13 and the housing body 11 and the cover plate 12.

[0082] In other embodiments, all the first water blocking members 13 are fixed to the groove 111 by welding, fastener connection, clamping, riveting, crimping, bonding, interference connection, etc.

[0083] In some embodiments, the second water barrier 14 is fixedly connected in the groove 111 .

[0084] Optionally, all the second water blocking members 14 are fixedly connected in the groove 111, for example, the second water blocking members 14 are fixed in the groove 111 by welding, fastener connection, clamping, riveting, pressing, bonding, interference connection, etc. Of course, some of the second water blocking members 14 may be fixedly connected in the groove 111, and some of the second water blocking members 14 may be integrally formed in the groove 111.

[0085] Based on the above solution, since the second water barrier 14 is fixedly connected in the groove 111, that is, the second water barrier 14 and the outer shell body 11 can be processed and formed separately, compared with integrally forming the second water barrier 14 and the outer shell body 11, the structure of the outer shell body 11 is simplified and the processing and forming of the outer shell body 11 is facilitated.

[0086] In other embodiments, all the second water blocking members 14 are integrally formed in the groove 111 .

[0087] Please refer to Figure 3 In some embodiments, a slot 1113 is provided on the slot wall of the groove 111 , and a snap-fitting portion is provided on the second water-blocking member 14 , and the snap-fitting portion is snap-fitted into the slot 1113 .

[0088] The clamping portion is formed by the edge of the second water barrier 14 .

[0089] It can be understood that the locking groove 1113 can be formed by a depression in the groove wall of the groove 111 ; or, the groove wall of the groove 111 is provided with two convex strips arranged in parallel, and the two convex strips and the groove wall of the groove 111 form the locking groove 1113 .

[0090] Optionally, only the two sides of the groove 111 are provided with the clamping grooves 1113 to ensure the stability of the edge of the second water barrier 14 being clamped in the clamping grooves 1113 .

[0091] Based on the above scheme, during installation, it is only necessary to move the second water barrier 14 along the axial direction of the outer shell body 11, and clamp the second water barrier 14 in the groove 111 through the cooperation of the clamping part and the clamping groove 1113, and then press the second water barrier 14 along the axial direction of the outer shell body 11 through the cover plate 12 to complete the installation of the second water barrier 14, making the installation of the second water barrier 14 relatively simple and convenient.

[0092] In other embodiments, a clamping portion may be provided on the groove wall of the groove 111 , and a clamping groove 1113 may be provided on the second water blocking member 14 .

[0093] In some embodiments, the motor housing 10 further includes a sealing member 19 disposed between the snap-fit ​​portion and the snap-fit ​​groove 1113 .

[0094] Optionally, the sealing member 19 is a rubber pad.

[0095] For example, the clamping portion is formed by the edge of the second water barrier 14. Figure 4 The seal 19 is coated on the edge of the second water barrier 14 to ensure the sealing between the clamping portion and the clamping groove 1113, so that the cooling medium can only pass through the second channel 18. The edge of the second water barrier 14 close to the second channel 18 may be coated with the seal 19 or may not be coated with the seal 19. Of course, the seal 19 may also be set in the clamping groove 1113.

[0096] In other embodiments, sealant may also be provided between the snap-fit ​​portion and the snap-fit ​​slot 1113 .

[0097] Please refer to Figure 8 The second aspect of the present application provides a hub motor 100. The hub motor 100 comprises a stator assembly 20, a rotor assembly 30 and a motor housing 10 as described in the first aspect, wherein the stator assembly 20 and the rotor assembly 30 are both disposed in the motor housing 10.

[0098] Optionally, the stator assembly 20 and the rotor assembly 30 are arranged at intervals along the radial direction of the motor housing 10, and in the radial direction of the motor housing 10, the stator assembly 20 is located outside the rotor assembly 30. The stator assembly 20 is fixed on the outer peripheral wall of the motor housing 10, and the rotor assembly 30 is rotatably installed in the motor housing 10, that is, the hub motor 100 is an external stator motor. Since the heat generated by the stator assembly 20 is usually higher than the heat generated by the rotor assembly 30, arranging the cooling channel 15 close to the edge of the motor housing 10 is more conducive to heat exchange.

[0099] In other embodiments, the stator assembly 20 and the rotor assembly 30 may also be arranged at intervals along the axial direction of the motor housing 10, wherein the stator assembly 20 is fixed on the side wall of the motor housing 10, and the rotor assembly 30 is rotatably installed in the motor housing 10, that is, the hub motor 100 is a disc motor.

[0100] The hub motor 100 adopts any one or more embodiments of the motor housing 10 described above, and thus has the beneficial effects of the above embodiments, which will not be described in detail here.

[0101] A third aspect of the present application provides a vehicle, wherein the vehicle comprises the wheel hub motor 100 as described in the second aspect.

[0102] The vehicle adopts any one or more embodiments of the above-mentioned hub motor 100, and thus has the beneficial effects of the above-mentioned embodiments, which will not be described one by one here.

[0103] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A motor housing, characterized in that: It includes a shell body and a cover plate, wherein the radial edge of the shell body has a groove, and the groove extends along the circumference of the shell body. The cover plate is fixed on the shell body and covers the opening of the groove. The shell body and the cover plate form a cooling channel; the motor housing has a fluid inlet and a fluid outlet, and the fluid inlet and the fluid outlet are respectively connected to the head end and the end end of the cooling channel.

2. The motor housing according to claim 1, characterized in that: The opening of the groove faces one axial side of the shell body.

3. The motor housing according to claim 1, characterized in that: The motor housing also includes a plurality of first water baffles and a plurality of second water baffles, which are alternately arranged in the groove along the circumference of the housing body; a first channel is formed at the first end of the first water baffle, and a second channel is formed at the second end of the second water baffle, and the first end of the first water baffle and the second end of the second water baffle are spaced apart along the axial direction of the housing body so that the cooling flow channel is in a zigzag shape.

4. The motor housing according to claim 3, characterized in that: The groove includes an outer peripheral groove section and a side groove section connected to the outer peripheral groove section, the first water blocking member includes a first outer peripheral section located in the outer peripheral groove section and a first side section located in the side groove section; the second water blocking member includes a second outer peripheral section located in the outer peripheral groove section and a second side section located in the side groove section.

5. The motor housing according to claim 4, characterized in that: The outer peripheral groove section spans across the entire outer peripheral surface of the outer shell body along the axial direction of the outer shell body.

6. The motor housing according to claim 4, characterized in that: The first channel is formed by the first side segment, the shell body, and the cover plate; and / or the second channel is formed by the second peripheral segment and the shell body.

7. The motor housing according to claim 4, characterized in that: The first side segment has a first through hole, which constitutes the first channel; and / or the second peripheral segment has a second through hole, which constitutes the second channel.

8. The motor housing according to any one of claims 1 to 7, characterized in that: The groove is an annular groove, and the cover plate is an annular plate; the motor housing also includes a third water-blocking member, which is arranged in the groove and located between the fluid inlet and the fluid outlet, and is used to block the fluid flow between the fluid inlet and the fluid outlet.

9. The motor housing according to any one of claims 3 to 7, characterized in that: The first water barrier is integrally formed in the groove, and / or the second water barrier is integrally formed in the groove.

10. The motor housing according to any one of claims 3 to 7, characterized in that: The second water blocking member is fixedly connected in the groove.

11. The motor housing according to claim 10, characterized in that: A clamping groove is provided on one of the groove wall of the groove and the second water-blocking member, and a clamping portion that is clamped and matched with the clamping groove is provided on the other of the groove wall of the groove and the second water-blocking member.

12. The motor housing according to claim 11, characterized in that: The motor housing further comprises a sealing member arranged between the clamping portion and the clamping groove.

13. A hub motor, characterized in that: It comprises a stator assembly, a rotor assembly and a motor housing as claimed in any one of claims 1 to 12, wherein the stator assembly and the rotor assembly are both arranged in the motor housing.

14. A vehicle, characterized in that: Comprising the hub motor as claimed in claim 13.

Images