Motor housing

Abstract

The utility model discloses a motor shell, which comprises a shell, an annular placing groove is formed in the shell, the annular placing groove comprises a first end and a second end along the axial direction, the first end is provided with an opening, the second end is closed, the annular placing groove comprises a first groove wall and a second groove wall which are arranged at an interval along the radial direction, and an inlet and an outlet are formed in the outer wall of the shell; the partition plate is placed in the annular containing groove and attached to the first groove wall, a flow guide channel is formed in the face, facing the second groove wall, of the partition plate, a cooling channel is formed by the flow guide channel and the second groove wall, and the outlet communicates with the inlet through the cooling channel; and the sealing plate covers the opening and is connected with the shell in a sealing manner. The utility model can improve the sealing effect and reduce the casting difficulty.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor field, especially a kind of motor casing. BACKGROUND

[0002] Motor is the important component of new energy vehicle, with the development of new energy vehicle industry, market to the power density requirement of motor is higher and higher, corresponding, the requirement of the cooling capacity of motor is also improved accordingly.Motor cooling usually needs to arrange flow channel on motor casing, then again set shell, to form cooling channel with flow channel.

[0003] That is, the cooling channel of motor is composed of two housings, motor casing and shell, two housings are sealed by two sealing rings arranged axially spaced, to prevent cooling liquid leakage.The sealing method has many problems, first, sealing ring adopts radial sealing, there is the risk of leakage of cooling liquid;Second, in the hot assembly process of motor casing and shell, sealing ring has greater risk of distortion and loses sealing effect, at the same time, due to the low heat resistance of sealing ring, therefore, the temperature of two housings hot assembly is limited.

[0004] In addition, due to the complex structure of cooling channel, it is necessary to arrange complex waterway flow guide ribs on motor casing to form complex flow channel, which not only brings great difficulty to the casting of motor casing, but also needs to cast shell, increases the design and parts procurement cost. SUMMARY

[0005] The utility model aims at solving poor sealing effect and high casting difficulty.The utility model provides a kind of motor casing, can improve sealing effect, reduce casting difficulty.

[0006] To solve the above technical problems, the embodiment of the utility model discloses a kind of motor casing, comprising:

[0007] Housing, the housing is opened with annular placement groove, along the axial direction, the annular placement groove includes first end and second end, the first end has opening, the second end is closed, the annular placement groove includes first slot wall and second slot wall arranged radially spaced, the outer wall of the housing is equipped with inlet and outlet;

[0008] Partition, the partition is placed in the annular placement groove, and is attached with the first slot wall, the partition is equipped with flow channel to the second slot wall, the flow channel forms cooling channel with the second slot wall, the cooling channel is connected with the inlet and the outlet;

[0009] Sealing plate, the sealing plate is covered in the opening, and is sealed with the housing connection.

[0010] The technical scheme is adopted, the space for placing the partition plate is reserved on the shell, that is, the annular placing groove, and the partition plate is placed in the annular placing groove, the flow guide channel is arranged on one surface of the partition plate facing the second groove wall, the flow guide channel and the second groove wall of the annular placing groove form a cooling channel, the cooling channel is connected with the inlet and the outlet on the outer wall of the shell, so that the cooling medium can enter the cooling channel from the inlet, and then flow out from the outlet after absorbing the heat of the motor, and meanwhile, the open end of the annular placing groove is provided with a sealing plate to prevent the cooling medium in the cooling channel from leaking.

[0011] That is, the motor shell provided by the embodiment of the application has the cooling function without two shells, and only by arranging the annular placing groove on the motor shell and placing the partition plate with the flow guide channel in the annular placing groove, the cooling channel is formed. In this way, the complicated flow guide channel does not need to be arranged on the motor shell, an outer shell does not need to be additionally arranged, and a structure corresponding to the flow guide channel does not need to be arranged on the surface of the outer shell facing the motor shell, so that the casting difficulty of the motor shell is greatly reduced, and the design and part procurement costs are reduced. In addition, if the flow guide channel needs to be improved and optimized, only the partition plate needs to be improved and optimized, and the motor shell and the outer shell do not need to be synchronously recast, that is, the optimization of the flow guide channel is facilitated without affecting the motor shell, so that the cost is saved and the casting difficulty is reduced.

[0012] Meanwhile, the sealing plate is used for sealing, the sealing plate is arranged at the open end, that is, the cooling medium is sealed in the axial direction, and compared with the radial sealing by using the sealing ring, the sealing effect is better, and the influence of the failure of the sealing ring in the hot assembly process of the motor is avoided.

[0013] In summary, the embodiment of the application has at least the following advantages:

[0014] 1. The motor shell pre-casts the partition plate arrangement space (that is, the annular placing groove) to replace the cooling channel formed by the two shells in the prior art, so that the casting difficulty of the motor shell is reduced, and the design and part procurement costs are reduced.

[0015] 2. The flow guide channel of the motor is optimized by using the partition plate, so that the optimization of the flow guide channel is facilitated without affecting the motor shell, the cost is saved, and the casting difficulty is reduced.

[0016] 3. The cooling medium and the shell are axially sealed by using the sealing plate, the sealing effect is better, and the influence of the failure of the sealing ring in the hot assembly process of the motor is avoided.

[0017] According to another specific embodiment of the application, the embodiment of the application discloses a motor shell, and the sealing plate is a cylinder gasket.

[0018] The gasket can compensate for roughness and unevenness between two contact surfaces, has a sealing effect, and the sealing effect is better than that of a sealing ring; meanwhile, the gasket has the characteristics of pressure resistance, heat resistance and corrosion resistance, and also has elasticity, can adapt to a higher temperature in a motor hot assembly process, thereby not limiting the temperature of the motor hot assembly, and the risk of distortion is low in the hot assembly process, so that the sealing effect is not lost in the process.

[0019] In addition, when the motor needs to be connected to other equipment (for example, a reducer), sealing is also required to be performed by a sealing ring, the sealing effect is poor and waterproof performance is poor, the gasket is arranged at the opening in the embodiment of the application, so that the gasket can be used for connection when the reducer is connected, additional sealing work is saved, connection is more convenient, the sealing effect is improved, and waterproof performance is also achieved.

[0020] According to another specific embodiment of the application, the embodiment of the application discloses a motor shell, the shell further comprises a connecting boss, the connecting boss is arranged at the opening and surrounds the outer wall, and the connecting boss is provided with a plurality of first threaded holes arranged at intervals in the circumferential direction; the gasket is provided with a plurality of second threaded holes arranged at intervals; the first threaded holes and the second threaded holes are in one-to-one correspondence; and a bolt passes through the first threaded holes and the second threaded holes, so that the gasket is threadedly connected with the connecting boss.

[0021] According to the above technical scheme, the bolt passes through the first threaded hole and the second threaded hole, so that the gasket is threadedly connected with the connecting boss, that is, the gasket is sealingly connected with the shell.

[0022] According to another specific embodiment of the application, the embodiment of the application discloses a motor shell, the material of the partition plate is resin material.

[0023] According to the above technical scheme, the resin material has the functions of vibration isolation and shock absorption, can obviously reduce vibration transmission from the electromagnetic force excitation in the stator to the outer wall of the shell, that is, reduces electromagnetic vibration noise from the inside of the stator to the outside, has the effect of noise reduction, and improves the NVH (Noise, Vibration and Harshness) performance of the motor.

[0024] According to another specific embodiment of the application, the embodiment of the application discloses a motor shell, the partition plate is in interference fit with the first groove wall and the second groove wall.

[0025] According to the technical scheme, the partition plate is only in interference fit with the first groove wall and the second groove wall, the partition plate is limited in the radial direction, displacement of the partition plate in the radial direction is prevented when the motor rotates, vibration is prevented, and the connection process between the partition plate and the annular placement groove is saved.

[0026] According to another specific embodiment of the utility model, the utility model discloses a motor casing, the flow guide channel includes liquid inlet part and liquid outlet part, the liquid inlet part is located at the first end, and is communicated with the import, the liquid outlet part is located at the second end, and is communicated with the export.

[0027] According to the technical scheme, the liquid inlet part is located at the first end and communicated with the import, the liquid outlet part is located at the second end and communicated with the export, and the first end and the second end are spaced apart along the axial direction, that is, the liquid inlet part and the liquid outlet part are spaced apart along the axial direction, and the import and the export are spaced apart along the axial direction, so that the cooling medium can comprehensively cool the motor along the axial direction, and the cooling effect is ensured.

[0028] According to another specific embodiment of the utility model, the utility model discloses a motor casing, the flow guide channel still includes first spiral channel and second spiral channel, the first spiral channel and the second spiral channel are mutually spaced and alternately arranged, and are communicated between the same liquid inlet part and the same liquid outlet part respectively, the first spiral channel and the second spiral channel respectively include inclined channel, each inclined channel extends in the direction of the first direction towards the liquid outlet part, and the first direction intersects the axial direction.

[0029] According to the technical scheme, the compact double spiral channels (the first spiral channel and the second spiral channel) are arranged, compared with the traditional linear water channel, the spiral structure design of the first spiral channel and the second spiral channel of the embodiment can reduce the flow resistance and reduce the cooling loss, and the cooling medium can flow in the first spiral channel and the second spiral channel respectively to take away the heat of the casing, and if the cooling medium only flows in a single spiral water channel, if the single spiral water channel is short (that is, not arranged compactly on the outer wall of the casing), the cooling effect is poor, and if the single spiral water channel is long (that is, arranged compactly on the outer wall of the casing), the cooling medium in the rear part of the single spiral water channel is heated to a high temperature, which affects the cooling effect. Therefore, the cooling paths of the first spiral channel and the second spiral channel of the embodiment are short, the residence time of the cooling medium in the first spiral channel and the second spiral channel can be reduced, and the cooling effect is effectively improved.

[0030] Meanwhile, each inclined channel extends in a direction towards the liquid outlet portion along the first direction, that is, the inclined channel can further shorten the overall path of the first spiral channel, and meanwhile, can further shorten the overall path of the second spiral channel, further improving the cooling effect; meanwhile, compared with other portions of the first spiral channel (or compared with other portions of the second spiral channel), the inclined channel can provide a larger heat exchange area, again improving the cooling effect.

[0031] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a motor casing, the first spiral channel, the second spiral channel is equipped with a plurality of flow guide ribs respectively, and the extension direction of the flow guide rib is same as the flow direction of the cooling medium in the corresponding first spiral channel, second spiral channel.

[0032] By adopting the above technical scheme, a plurality of flow guide ribs are arranged in the first spiral channel and the second spiral channel respectively, which can enhance the guiding effect on the cooling medium, and also can increase the heat exchange area of the first spiral channel and the second spiral channel, effectively improving the cooling performance of the first spiral channel and the second spiral channel.

[0033] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a motor casing, the flow guide channel further comprises a confluence cavity, and the first spiral channel and the second spiral channel are communicated with the liquid inlet portion through the confluence cavity.

[0034] By adopting the above technical scheme, the liquid inlet portion is communicated with the first spiral channel and the second spiral channel through the confluence cavity, so that the cooling medium can flow from the liquid inlet portion to the confluence cavity, and then flow to the first spiral channel and the second spiral channel from the confluence cavity.

[0035] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a motor casing, the first spiral channel and the second spiral channel are provided with flow separation ribs, and a part of the flow separation ribs extend into the confluence cavity.

[0036] By adopting the above technical scheme, the first spiral channel and the second spiral channel are separated by the flow separation ribs, and a part of the flow separation ribs extend into the confluence cavity, so that the cooling medium in the confluence cavity can be separated into the first spiral channel and the second spiral channel by the flow separation ribs. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 A sectional view of a motor of the prior art is shown;

[0038] Figure 2 A perspective view of a motor casing of the prior art is shown;

[0039] Figure 3The utility model discloses a motor casing in the perspective of the front view Figure 1 ;

[0040] Figure 4 The utility model discloses a motor casing in the perspective of the front view Figure 3 Radial section view

[0041] Figure 5 The utility model discloses a motor casing in the perspective of the rear view Figure 2 Wherein the sealing plate is not shown

[0042] Figure 6 The utility model discloses a motor casing in the perspective of the rear view Figure 5 Radial section view

[0043] Figure 7 The utility model discloses a motor casing in the perspective of the rear view Figure 3 Wherein the sealing plate is shown

[0044] Figure 8 The utility model discloses a partition plate in the perspective of the front view Figure 1 ;

[0045] Figure 9 The utility model discloses a partition plate in the perspective of the rear view Figure 2 Wherein, the partition plate in the drawing is shown in the perspective of the clockwise rotation. Figure 8

[0046] Reference signs: wherein, 10, inner shell, 11, the outer wall of inner shell;12, guide rib;13, guide channel;14, cooling channel;15, sealing ring;20, outer shell;100, shell;101, annular placement groove;102, first end;103, second end;104, first groove wall;105, second groove wall;106, outer wall;107, inlet;108, outlet;109, inner cavity;110, connecting boss;111, first threaded hole;200, partition plate;201, guide channel;202, cooling channel;203, liquid inlet part;204, liquid outlet part;205, first spiral channel;206, second spiral channel;207, inclined channel;208, guide rib;209, first inclined channel;210, first channel;211, second channel;212, second inclined channel;213, third channel;214, fourth channel;215, confluence cavity;216, flow separation rib;2160, a part of flow separation rib;300, sealing plate;301, cylinder gasket;302, second threaded hole. DETAILED DESCRIPTION

[0047] ​The following describes the embodiments of the present application by specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art according to the disclosure. Although the description of the present application is introduced in combination with the preferred embodiments, it does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications which can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0048] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0049] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0050] The terms "first", "second", and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present embodiment, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0052] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0053] Reference Figure 1 and Figure 2At present, the cooling channel of the motor is composed of two parts: a motor housing (for the convenience of description, the motor housing is called an inner housing 10) and an outer housing 20. Specifically, a guide rib 12 is provided on the outer wall 11 of the inner housing to form a guide channel 13, and then the outer housing 20 is sleeved on the outer wall of the inner housing 10. A structure matching the inner housing 10 is provided on the inner wall of the outer housing 20 to form a cooling channel 14 with the guide channel 13. Due to the complex structure of the cooling channel 14, complex guide ribs 12 need to be arranged on the inner housing 10 to form a complex guide channel 13. This not only brings great difficulty to the casting of the inner housing 10, but also requires the casting of the outer housing 20, which increases the design and parts procurement costs.

[0054] At the same time, the axial direction (i.e. Figure 1 Two sealing rings 15, spaced apart (in the X direction shown), are used to seal the inner shell 10 and the outer shell 20 to prevent coolant leakage. This sealing method has several problems. First, the sealing rings 15 use radial sealing, which poses a risk of coolant leakage. Second, during the shrink-fitting process of the inner shell 10 and the outer shell 20, the sealing rings 15 are at high risk of twisting and losing their sealing effect. Furthermore, the low heat resistance of the sealing rings 15 limits the temperature at which the two shells can be shrink-fitted.

[0055] To solve the above problems, refer to Figures 3 to 5 An embodiment of the present application provides a motor housing, which replaces the existing technology of forming a cooling channel 202 through two housings (i.e., the above-mentioned motor housing and outer shell) by pre-casting a partition arrangement space (i.e., an annular placement groove 101) in the motor housing 100, thereby reducing the casting difficulty of the motor housing 100 and the design and procurement costs of parts. At the same time, a sealing plate 300 is used for axial sealing, which has a better sealing effect and avoids the influence of sealing ring failure during the thermal assembly process of the motor.

[0056] refer to Figures 3 to 5 The present invention discloses a motor housing, comprising: a housing 100, a partition 200 and a sealing plate 300. The housing 100 is provided with an annular placement groove 101, which is axially (ie Figure 4 The annular placement groove 101 includes a first end 102 and a second end 103, the first end 102 has an opening, and the second end 103 is closed. The annular placement groove 101 includes a radial direction (ie Figure 4 The first groove wall 104 and the second groove wall 105 are spaced apart from each other (in the Y direction shown in the figure), and the outer wall 106 of the shell 100 is provided with an inlet 107 and an outlet 108.

[0057] For example, refer to Figures 3 to 5 Combined with Figure 8 and Figure 9The baffle 200 is placed in the annular placement groove 101 and is attached to the first groove wall 104. One side of the baffle 200 facing the second groove wall 105 is provided with a flow guide channel 201. The flow guide channel 201 and the second groove wall 105 form a cooling channel 202. The cooling channel 202 connects the outlet 108 and the inlet 107. The sealing plate 300 is arranged on the opening (i.e. the first end 102) and is sealingly connected to the shell 100.

[0058] The above technical solution reserves a placement space of the baffle 200 on the shell 100, i.e. the annular placement groove 101. One side of the baffle 200 facing the second groove wall 105 is provided with a flow guide channel 201. The baffle 200 is placed in the annular placement groove 101. The flow guide channel 201 and the second groove wall 105 of the annular placement groove 101 form a cooling channel 202. The cooling channel 202 is connected to the inlet 107 and the outlet 108 on the outer wall 106 of the shell. The cooling medium can enter the cooling channel 202 from the inlet 107, and then flow out of the outlet 108 after absorbing the heat of the motor. The opening end (i.e. the first end 102) of the annular placement groove 101 is provided with a sealing plate 300 to prevent the cooling medium in the cooling channel 202 from leaking.

[0059] That is, the motor shell provided by the embodiment of the present application has the cooling function without two shells (i.e. the motor shell and the outer shell described above). The annular placement groove 101 is arranged on the shell 100 of the motor. The baffle 200 provided with the flow guide channel 201 is placed in the annular placement groove 101 to form the cooling channel 202. In this way, the flow guide channel 201 does not need to be arranged on the shell 100 of the motor. An outer shell does not need to be additionally arranged. A structure corresponding to the flow guide channel 201 does not need to be arranged on the side of the outer shell facing the motor shell. The casting difficulty of the motor shell is greatly reduced. The design and procurement cost of parts are reduced. In addition, if the flow guide channel 201 needs to be improved and optimized, the baffle 200 only needs to be improved and optimized. The motor shell and the outer shell do not need to be simultaneously recast as before. The optimization of the flow guide channel 201 is facilitated without affecting the motor shell. The cost is saved and the casting difficulty is reduced.

[0060] Meanwhile, the sealing plate 300 is used for sealing in the present application. The sealing plate 300 is arranged at the opening end, i.e. along the axial direction to seal the cooling medium. Compared with the radial sealing by the sealing ring, the sealing effect is better. The influence of the failure of the sealing ring in the hot assembly process of the motor is avoided.

[0061] In summary, the embodiment of the present application has at least the following advantages:

[0062] 1. The housing 100 of the motor is provided with a precast partition arrangement space (i.e. an annular placement groove 101) instead of the prior art cooling channel 202 formed by two housings (i.e. the motor housing and the outer shell), which reduces the casting difficulty of the motor housing and reduces the design and part procurement costs;

[0063] 2. The flow guide channel 201 of the motor is optimized by the partition 200, which can facilitate the optimization of the flow guide channel 201 without affecting the motor housing, thereby saving costs and reducing casting difficulty;

[0064] 3. The cooling medium and the housing 100 are axially sealed by the sealing plate 300, which has better sealing effect and avoids the influence of the failure of the sealing ring during the hot assembly of the motor.

[0065] Exemplarily, referring to Figure 4 and Figure 5 , the housing 100 further comprises an inner cavity 109 for placing a stator and a rotor (not shown in the figure), and the annular placement groove 101 described above surrounds the inner cavity 109 in the circumferential direction (i.e. the A direction shown in the figure), and the material of the partition 200 is a resin material, but is not limited thereto, and can also be other materials with high damping or good vibration isolation performance, such as high molecular damping materials or porous metal materials, etc. The partition 200 is in interference fit with the first groove wall 104 and the second groove wall 105 to limit the radial direction (i.e. the Y direction shown in the figure) of the partition 200, so as to prevent the partition 200 from being displaced in the radial direction and generating vibration when the motor rotates. Figure 5 Figure 4 Exemplarily, referring to and combining

[0066] and Figures 3 to 5 , the stator and the rotor of the motor generate a large amount of heat when they start to work, and the cooling medium can enter the flow guide channel 201 of the partition 200 from the inlet 107 of the outer wall 106 of the housing 100, and the partition 200 is in interference fit with the first groove wall 104, i.e. can be closely attached to the first groove wall 104, thereby taking away the heat generated when the motor works, and then flowing out from the outlet 108. Figure 8 Figure 9 Exemplarily, the material of the housing 100 is aluminum, but is not limited thereto, and other materials with good mechanical properties, thermal stability and insulation properties can also be used, such as cast iron, steel, stainless steel, etc. The sealing plate 300 is a steel cylinder gasket 301, but is not limited thereto, and other materials with good heat resistance, pressure resistance, elasticity and sealing performance can also be used, such as carbon steel, stainless steel, aluminum, etc.

[0067] Exemplarily, the material of the housing 100 is aluminum, but is not limited thereto, and other materials with good mechanical properties, thermal stability and insulation properties can also be used, such as cast iron, steel, stainless steel, etc. The sealing plate 300 is a steel cylinder gasket 301, but is not limited thereto, and other materials with good heat resistance, pressure resistance, elasticity and sealing performance can also be used, such as carbon steel, stainless steel, aluminum, etc.

[0068] ​The cylinder gasket 301 can compensate for the roughness and unevenness between the two contact surfaces, has a sealing effect, and its sealing effect is better than that of a sealing ring; meanwhile, the cylinder gasket 301 has the characteristics of pressure resistance, heat resistance and corrosion resistance, and also has a certain elasticity, can adapt to a higher temperature in the process of hot assembly of the motor, so as to not limit the temperature of the hot assembly of the motor, and the risk of distortion is low in the process of hot assembly, so the sealing effect is not lost in the process.

[0069] In addition, when the motor needs to be connected to other equipment (such as a reducer), it also needs to be sealed by a sealing ring, which has poor sealing effect and is not waterproof. The embodiment of the application adopts the cylinder gasket 301 arranged at the opening, so that when the reducer is connected, the cylinder gasket 301 can be connected, saving additional sealing work, making the connection more convenient, improving the sealing effect, and also having waterproofness.

[0070] Exemplarily, referring to Figure 5 and Figure 7 , the shell 100 further comprises a connecting boss 110, the connecting boss 110 is arranged at the opening and surrounds the outer wall 106, and along the circumferential direction (i.e. the A direction shown in Figure 5 , the connecting boss 110 is provided with eleven first threaded holes 111 arranged at intervals, but is not limited thereto, and can also be eight, ten, thirteen or the like, and the cylinder gasket 301 is provided with eleven second threaded holes 302 arranged at intervals, but is not limited thereto, and can also be eight, ten, thirteen or the like, as long as the number of the first threaded holes 111 is consistent, for example, it can also be eight, ten, thirteen or the like, the first threaded holes 111 and the second threaded holes 302 correspond one by one, and a bolt (not shown in the figure) passes through the first threaded holes 111 and the second threaded holes 302, so that the cylinder gasket 301 is threadedly connected with the connecting boss 110.

[0071] Next, the flow guide channel 201 of the partition plate 200 will be described in detail in combination with Figure 8 and Figure 9 .

[0072] Exemplarily, in combination with Figure 3 and Figure 4 , the flow guide channel 201 comprises a liquid inlet portion 203 for introducing a cooling medium and a liquid outlet portion 204 for discharging the cooling medium, the liquid inlet portion 203 is arranged at the first end 102 and communicates with the inlet 107, and the liquid outlet portion 204 is arranged at the second end 103 and communicates with the outlet 108, and the first end 102 and the second end 103 are arranged at intervals along the axial direction (i.e. the X direction shown in Figure 4 ), that is, the liquid inlet portion 203 and the liquid outlet portion 204 are arranged at intervals along the axial direction, and the inlet 107 and the outlet 108 are arranged at intervals along the axial direction, so that the cooling medium can comprehensively dissipate heat along the axial direction of the motor, ensuring the cooling effect.

[0073] Exemplarily, the flow guide channel 201 further comprises a first spiral channel 205 and a second spiral channel 206, the first spiral channel 205 and the second spiral channel 206 are alternately arranged and spaced from each other, a head end of the first spiral channel 205 is communicated with the liquid inlet portion 203 (as shown in FIG. 2A), a tail end of the first spiral channel 205 is communicated with the liquid outlet portion 204 (as shown in FIG. 2A), a head end of the second spiral channel 206 is communicated with the liquid inlet portion 203 (as shown in FIG. 2A), and a tail end of the second spiral channel 206 is communicated with the liquid outlet portion 204 (as shown in FIG. 2A). Figure 8 Exemplarily, the flow guide channel 201 further comprises a first spiral channel 205 and a second spiral channel 206, the first spiral channel 205 and the second spiral channel 206 are alternately arranged and spaced from each other, a head end of the first spiral channel 205 is communicated with the liquid inlet portion 203 (as shown in FIG. 2A), a tail end of the first spiral channel 205 is communicated with the liquid outlet portion 204 (as shown in FIG. 2A), a head end of the second spiral channel 206 is communicated with the liquid inlet portion 203 (as shown in FIG. 2A), and a tail end of the second spiral channel 206 is communicated with the liquid outlet portion 204 (as shown in FIG. 2A). Figure 9 Exemplarily, the flow guide channel 201 further comprises a first spiral channel 205 and a second spiral channel 206, the first spiral channel 205 and the second spiral channel 206 are alternately arranged and spaced from each other, a head end of the first spiral channel 205 is communicated with the liquid inlet portion 203 (as shown in FIG. 2A), a tail end of the first spiral channel 205 is communicated with the liquid outlet portion 204 (as shown in FIG. 2A), a head end of the second spiral channel 206 is communicated with the liquid inlet portion 203 (as shown in FIG. 2A), and a tail end of the second spiral channel 206 is communicated with the liquid outlet portion 204 (as shown in FIG. 2A). Figure 8 Exemplarily, the flow guide channel 201 further comprises a first spiral channel 205 and a second spiral channel 206, the first spiral channel 205 and the second spiral channel 206 are alternately arranged and spaced from each other, a head end of the first spiral channel 205 is communicated with the liquid inlet portion 203 (as shown in FIG. 2A), a tail end of the first spiral channel 205 is communicated with the liquid outlet portion 204 (as shown in FIG. 2A), a head end of the second spiral channel 206 is communicated with the liquid inlet portion 203 (as shown in FIG. 2A), and a tail end of the second spiral channel 206 is communicated with the liquid outlet portion 204 (as shown in FIG. 2A). Figure 9 Exemplarily, the flow guide channel 201 further comprises a first spiral channel 205 and a second spiral channel 206, the first spiral channel 205 and the second spiral channel 206 are alternately arranged and spaced from each other, a head end of the first spiral channel 205 is communicated with the liquid inlet portion 203 (as shown in FIG. 2A), a tail end of the first spiral channel 205 is communicated with the liquid outlet portion 204 (as shown in FIG. 2A), a head end of the second spiral channel 206 is communicated with the liquid inlet portion 203 (as shown in FIG. 2A), and a tail end of the second spiral channel 206 is communicated with the liquid outlet portion 204 (as shown in FIG. 2A).

[0074] That is, the first spiral channel 205 and the second spiral channel 206 are respectively communicated between the same liquid inlet portion 203 and the same liquid outlet portion 204.

[0075] Exemplarily, the first spiral channel 205 and the second spiral channel 206 respectively comprise an inclined channel 207, each inclined channel 207 extends in a direction towards the liquid outlet portion 204 along a first direction (i.e., the Z direction as shown in FIG. 2A), the first direction (i.e., the Z direction as shown in FIG. 2A) intersects with an axial direction (i.e., the X direction as shown in FIG. 2A). Figure 8 Exemplarily, the first spiral channel 205 and the second spiral channel 206 respectively comprise an inclined channel 207, each inclined channel 207 extends in a direction towards the liquid outlet portion 204 along a first direction (i.e., the Z direction as shown in FIG. 2A), the first direction (i.e., the Z direction as shown in FIG. 2A) intersects with an axial direction (i.e., the X direction as shown in FIG. 2A). Figure 8 Exemplarily, the first spiral channel 205 and the second spiral channel 206 respectively comprise an inclined channel 207, each inclined channel 207 extends in a direction towards the liquid outlet portion 204 along a first direction (i.e., the Z direction as shown in FIG. 2A), the first direction (i.e., the Z direction as shown in FIG. 2A) intersects with an axial direction (i.e., the X direction as shown in FIG. 2A). Figure 8 Exemplarily, the first spiral channel 205 and the second spiral channel 206 respectively comprise an inclined channel 207, each inclined channel 207 extends in a direction towards the liquid outlet portion 204 along a first direction (i.e., the Z direction as shown in FIG. 2A), the first direction (i.e., the Z direction as shown in FIG. 2A) intersects with an axial direction (i.e., the X direction as shown in FIG. 2A). Exemplarily, the first spiral channel 205 and the second spiral channel 206 respectively comprise an inclined channel 207, each inclined channel 207 extends in a direction towards the liquid outlet portion 204 along a first direction (i.e., the Z direction as shown in FIG. 2A), the first direction (i.e., the Z direction as shown in FIG. 2A) intersects with an axial direction (i.e., the X direction as shown in FIG. 2A).

[0076] Exemplarily, the first spiral channel 205 and the second spiral channel 206 respectively comprise an inclined channel 207, each inclined channel 207 extends in a direction towards the liquid outlet portion 204 along a first direction (i.e., the Z direction as shown in FIG. 2A), the first direction (i.e., the Z direction as shown in FIG. 2A) intersects with an axial direction (i.e., the X direction as shown in FIG. 2A).

[0077] Meanwhile, each of the inclined channels 207 extends in a direction towards the liquid outlet 204 along the first direction, that is, the inclined channels 207 can further shorten the overall path of the first spiral channel 205, and meanwhile, can further shorten the overall path of the second spiral channel 206, further improving the cooling effect; meanwhile, compared with other parts of the first spiral channel 205 (or compared with other parts of the second spiral channel 206), the inclined channels 207 can provide a larger heat exchange area, again improving the cooling effect.

[0078] Exemplarily, the first spiral channel 205 is provided with three flow guide ribs 208, but is not limited thereto, and can also be two, four, five, etc., and the extension direction of each flow guide rib 208 is the same as the flow direction of the cooling medium in the first spiral channel 205; the second spiral channel 206 is also correspondingly provided with three flow guide ribs 208, but is not limited thereto, and can also be two, four, five, etc., and the extension direction of each flow guide rib 208 is the same as the flow direction of the cooling medium in the second spiral channel 206.

[0079] By adopting the above technical solutions, the three flow guide ribs 208 arranged in the first spiral channel 205 and the three flow guide ribs 208 arranged in the second spiral channel 206 can enhance the guiding effect on the cooling medium, and at the same time, can increase the heat exchange area of the first spiral channel 205 and the second spiral channel 206, effectively improving the cooling performance of the first spiral channel 205 and the second spiral channel 206.

[0080] Exemplarily, the inclined channels 207 include at least one first inclined channel 209, and in the embodiment of the present application, the inclined channels 207 include two first inclined channels 209, but the number of the present application embodiment is not limited thereto, for example, it can also be one, three, four, etc. The first inclined channel 209 is arranged in the first spiral channel 205.

[0081] That is, the first spiral channel 205 includes a first channel 210, two first inclined channels 209 and a second channel 211; the first channel 210 is in communication with the liquid inlet 203, the two first inclined channels 209 are communicated between the first channel 210 and the second channel 211, and the second channel 211 is in communication with the liquid outlet 204, and each first inclined channel 209 is arranged at a first obtuse angle α with the first channel 210, as shown in Figure 8 The first obtuse angle α is 140°, but the present application embodiment does not limit the value of the first obtuse angle α, for example, it can also be 120°, 135°, 161°, etc.

[0082] Exemplarily, the inclined channels 207 include at least one second inclined channel 212, in the embodiment of the present application, the inclined channels 207 include one second inclined channel 212, but the number of the second inclined channel 212 is not limited in the embodiment of the present application, for example, the number can be two, three, four, etc.

[0083] That is, the second spiral channel 206 includes a third channel 213, one second inclined channel 212 and a fourth channel 214; the third channel 213 is communicated with the liquid inlet part 203, the one second inclined channel 212 is communicated between the third channel 213 and the fourth channel 214, and the fourth channel 214 is communicated with the liquid outlet part 204; each second inclined channel 212 is arranged at a second obtuse angle θ with the third channel 213, as shown in Figure 8 The second obtuse angle θ is 140°, but can also be 120°, 135°, 161°, etc.; in addition, the value of the second obtuse angle θ can be the same as or different from the value of the first obtuse angle α, and the value of the second obtuse angle θ is not limited in the embodiment of the present application.

[0084] The above-mentioned second inclined channel 212 is located between the two first inclined channels 209 and is arranged at intervals.

[0085] Exemplarily, the flow guide channel 201 further includes a flow collecting cavity 215, and the first spiral channel 205 and the second spiral channel 206 are both communicated with the liquid inlet part 203 through the flow collecting cavity 215, that is, the cooling medium can flow from the liquid inlet part to the flow collecting cavity 215, and then flow to the first spiral channel 205 and the second spiral channel 206 from the flow collecting cavity 215.

[0086] Exemplarily, a flow separating rib 216 is arranged between the first spiral channel 205 and the second spiral channel 206, and separates the first spiral channel 205 and the second spiral channel 206; a part of the flow separating rib 2160 extends into the flow collecting cavity 215, so that the cooling medium in the flow collecting cavity 215 can be separated into the first spiral channel 205 and the second spiral channel 206 by the part of the flow separating rib 2160.

[0087] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood by those skilled in the art that the above content is a further detailed description of the present application in combination with specific embodiments, and the specific implementation of the present application should not be limited to these descriptions. Those skilled in the art can make various changes in form and details, including making a number of simple derivations or substitutions, without departing from the spirit and scope of the present application.

Claims

1. An electric machine housing, characterized in that, include: A housing, wherein the housing is provided with an annular placement groove, wherein the annular placement groove includes a first end and a second end in the axial direction, wherein the first end has an opening and the second end is closed, and the annular placement groove includes a first groove wall and a second groove wall spaced apart in the radial direction, and an outer wall of the housing is provided with an inlet and an outlet; a partition, the partition being placed in the annular placement groove and in contact with the first groove wall, the partition being provided with a guide channel on a side facing the second groove wall, the guide channel and the second groove wall forming a cooling channel, the cooling channel connecting the outlet with the inlet; A sealing plate is provided to cover the opening and is sealed to the housing.

2. The motor housing of claim 1, wherein, The sealing plate is a cylinder gasket.

3. The motor housing of claim 2, wherein, The shell also includes a connecting boss, which is arranged at the opening and around the outer wall. Along the circumferential direction, the connecting boss is provided with a plurality of first threaded holes arranged at intervals, and the cylinder gasket is provided with a plurality of second threaded holes arranged at intervals. The first threaded holes and the second threaded holes correspond to each other one by one, and bolts pass through the first threaded holes and the second threaded holes to thread the cylinder gasket into the connecting boss.

4. The motor housing of claim 1, wherein, The partition is made of resin.

5. The motor housing of claim 1, wherein, The partition is interference fit with both the first groove wall and the second groove wall.

6. The motor housing of claim 1, wherein, The guide channel includes a liquid inlet and a liquid outlet. The liquid inlet is provided at the first end and communicates with the inlet. The liquid outlet is provided at the second end and communicates with the outlet.

7. The motor housing of claim 6, wherein, The guide channel also includes a first spiral channel and a second spiral channel, the first spiral channel and the second spiral channel are spaced from each other and alternately arranged, and are respectively connected between the same liquid inlet and the same liquid outlet; the first spiral channel and the second spiral channel respectively include inclined channels, each of the inclined channels extends in a first direction toward the liquid outlet, and the first direction intersects the axial direction.

8. The motor housing of claim 7, wherein, The first spiral channel and the second spiral channel are respectively provided with a plurality of guide ribs, and the extending direction of the guide ribs is the same as the flow direction of the cooling medium in the corresponding first spiral channel and the second spiral channel.

9. The motor housing of claim 7, wherein, The guide channel further includes a confluence cavity, and the first spiral channel and the second spiral channel are both connected to the liquid inlet portion through the confluence cavity.

10. The motor housing according to claim 9, characterized in that A flow isolation rib is provided between the first spiral channel and the second spiral channel, and a portion of the flow isolation rib extends into the flow confluence cavity.

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