Electric drive shell and electric drive device

Abstract

The application belongs to the technical field of electric drive equipment, and provides an electric drive shell and an electric drive device, mainly comprising a motor shell, a containing cavity for mounting a winding assembly and a main oil channel for oil delivery are arranged in the motor shell; at least one stator core oil guide groove is circumferentially arranged in the middle part of the inner wall of the containing cavity, a stator core oil inlet hole is arranged on the main oil channel, and the stator core oil inlet hole is respectively connected with the main oil channel and the stator core oil guide groove; a plurality of winding end oil injection holes are arranged at the two ends of the inner wall of the containing cavity, and the winding end oil injection holes are connected with the main oil channel. In the whole structure of the application, an oil injection pipe is not additionally arranged for auxiliary oil injection and oil guiding, the application number of corresponding parts can be effectively reduced, the cost is reduced, meanwhile, the structure is simpler, the assembly efficiency is improved, the assembly quality is controlled, and better application economic benefits are achieved.

Description

Technical Field

[0001] This application belongs to the field of electric drive equipment technology, and more specifically, relates to an electric drive housing and an electric drive device. Background Technology

[0002] Motor systems are components that require high-speed operation, with maximum speeds reaching 20,000 r / min or even higher. Their parts, including the stator assembly, rotor assembly, and bearings, all require adequate cooling or lubrication. Currently, the most common method for motor cooling is oil cooling, where lubricating oil simultaneously provides both lubrication and cooling.

[0003] To form a complete cooling and lubrication circuit, existing oil-cooled motor housings require additional components such as oil injection pipes to assist in oil spraying and guiding. For example, cooling the ends of the motor stator windings requires multiple oil injection pipes. However, using multiple oil injection pipes and other components to assist in oil spraying and guiding results in a large number of parts, higher costs, a more complex structure, and greater assembly difficulty. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings in the prior art, the purpose of this application is to provide an electric drive housing and an electric drive device that can achieve oil injection and oil guiding without the need for an auxiliary oil injection pipe, thereby improving the economic benefits of electric drive equipment.

[0005] The technical means adopted in this application to solve the above-mentioned technical problems are:

[0006] This application provides an electric drive housing, including a motor housing, wherein the motor housing is provided with a receiving cavity for mounting the winding assembly and a main oil passage for oil transportation;

[0007] At least one stator core oil guide groove is provided in a circumferential manner in the middle of the inner wall of the cavity, and a stator core oil inlet is provided on the main oil passage. The stator core oil inlet is connected to the main oil passage and the stator core oil guide groove respectively.

[0008] The inner wall of the cavity is provided with several winding end oil injection holes at both ends, and the winding end oil injection holes are connected to the main oil passage.

[0009] In the above implementation process, a main oil passage is provided inside the motor housing. Through this main oil passage and the stator core oil inlet, oil can be delivered to the stator core of the winding assembly, thereby achieving lubrication and cooling of the stator core. Conversely, through the main oil passage and the oil spray holes at the winding ends, oil can be sprayed onto the stator windings of the winding assembly, thereby achieving lubrication and cooling of the stator windings. The entire structure eliminates the need for additional oil spray pipes for auxiliary oil spraying and guiding, effectively reducing the number of corresponding parts and lowering costs. Furthermore, the structure is simpler, facilitating improved assembly efficiency and quality control, resulting in better economic benefits.

[0010] Preferably, the main oil passage is arranged above the receiving cavity along the axial direction of the receiving cavity, and a winding end oil passage communicating with it is provided on the main oil passage;

[0011] The winding end oil passages are arranged radially along the receiving cavity and are located at both ends of the receiving cavity, and the winding end oil injection holes are connected to the winding end oil passages.

[0012] In the above implementation process, the oil passages at the winding ends can facilitate the distributed arrangement of several oil injection holes at the winding ends, thereby improving the cooling effect on the stator windings.

[0013] Preferably, it also includes a differential reduction housing, which, when closed with the motor housing, forms a mounting cavity for installing the differential reduction assembly;

[0014] The differential housing is provided with a main oil passage extension section and a diversion section connected to the main oil passage extension section.

[0015] Preferably, the motor housing is provided with an input shaft left bearing mounting groove, and an oil collecting plate is provided at the bottom of the input shaft left bearing mounting groove. The oil collecting plate has an arc-shaped segment that matches the shape of the input shaft left bearing mounting groove.

[0016] In the above implementation process, the oil collection plate can collect the splashed oil in the mounting cavity, and the collected oil can be used to lubricate and cool the left bearing of the input shaft.

[0017] Preferably, the differential housing is provided with an input shaft right bearing mounting groove, and the input shaft right bearing mounting groove is provided with an input shaft right bearing oil injection hole, which is connected to the flow divider section.

[0018] In the above implementation process, the lubrication and cooling of the right bearing of the input shaft is achieved by setting the oil injection hole of the right bearing of the input shaft.

[0019] Preferably, the motor housing is provided with a left bearing mounting groove for the intermediate shaft and an oil supply channel;

[0020] The intermediate shaft left bearing mounting groove is provided with an intermediate shaft left bearing oil injection hole, which is connected to the oil supply channel;

[0021] The oil supply channel is connected to the main oil channel.

[0022] In the above implementation process, the oil supply channel is used to supply oil to the main oil passage, and the oil injection hole of the intermediate shaft left bearing can be used to lubricate and cool the intermediate shaft left bearing.

[0023] Preferably, the differential housing is provided with an intermediate shaft right bearing mounting groove, and the intermediate shaft right bearing mounting groove is provided with an intermediate shaft right bearing oil injection hole, which is connected to the main oil passage extension section.

[0024] In the above implementation process, the lubrication and cooling of the right bearing of the intermediate shaft is achieved by setting the oil injection hole of the right bearing of the intermediate shaft.

[0025] Preferably, the motor housing is provided with a left bearing mounting groove for the output shaft, and a first inner pipe is provided to connect the left bearing mounting groove for the output shaft and the left bearing mounting groove for the intermediate shaft.

[0026] And / or, the differential housing is provided with an output shaft right bearing mounting groove, and a second inner pipe is provided between the output shaft right bearing mounting groove and the intermediate shaft right bearing mounting groove.

[0027] Preferably, the main oil passage is provided with an oil injection hole for the mounting cavity.

[0028] In the above implementation process, the oil injection hole in the mounting cavity can facilitate direct oil injection into the mounting cavity through the main oil passage, thereby improving the lubrication and cooling effect on the differential reduction assembly.

[0029] This application also provides an electric drive device, including the electric drive housing described above.

[0030] Preferably, it includes a differential reduction assembly and an electric drive housing as described above;

[0031] The differential reduction component includes an input shaft, which is hollow inside. The right end of the input shaft is located in the right bearing mounting groove of the input shaft, and the diversion section is connected to the interior of the input shaft.

[0032] Preferably, the device also includes a winding assembly, which includes a rotor shaft, a left motor bearing, and a right motor bearing respectively disposed at both ends of the rotor shaft.

[0033] The rotor shaft is hollow inside and is sleeved with the input shaft. The input shaft is provided with an oil slinger hole for supplying fluid to the right bearing of the motor.

[0034] In the above implementation process, the lubrication and cooling of the right bearing of the motor can be achieved through the oil slinger hole of the input shaft.

[0035] Preferably, the main oil passage is provided with a motor left bearing oil injection hole for supplying fluid to the motor left bearing.

[0036] Preferably, the rotor shaft is provided with a rotor core and an oil-throwing hole for supplying liquid to the rotor core.

[0037] In the above process, the rotor core can be lubricated and cooled by the oil-throwing hole on the rotor shaft.

[0038] Preferably, the winding assembly further includes a stator core, and the outer surface of the stator core is provided with a plurality of axial guide oil grooves.

[0039] In the above implementation process, the axial guide oil groove can be used in conjunction with the stator core guide oil groove to further improve the lubrication and cooling effect on the stator core. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the electric drive housing of this application.

[0042] Figure 2 This is a cross-sectional structural diagram of the motor housing of this application.

[0043] Figure 3 This is a schematic diagram of the mounting cavity (motor housing side) of this application.

[0044] Figure 4 This is a schematic diagram of the structure of the mounting cavity (differential housing side) in this application.

[0045] Figure 5 This is a cross-sectional structural diagram of the electric drive device of this application.

[0046] Figure 6This is a cross-sectional view of the oil passage at the end of the winding in this application.

[0047] Figure 7 This is a cross-sectional structural diagram of the stator core of this application.

[0048] Marker explanation:

[0049] 1-Motor housing, 10-Receiving cavity, 11-Main oil passage, 111-Motor left bearing oil injection hole, 112-Stator core oil inlet hole, 113-Mounting cavity oil injection hole, 12-Oil supply channel, 13-Stator core oil guide groove, 14-Winding end oil passage, 141-Winding end oil injection hole, 15-Input shaft left bearing mounting groove, 151-Oil collection plate, 16-Intermediate shaft left bearing mounting groove, 161-Intermediate shaft left bearing oil injection hole, 17-Output shaft left bearing mounting groove, 171-First inner pipe;

[0050] 2-Differential reducer housing, 20-Mounting cavity, 21-Main oil passage extension section, 22-Branch section, 23-Input shaft right bearing mounting groove, 231-Input shaft right bearing oil injection hole, 24-Intermediate shaft right bearing mounting groove, 241-Intermediate shaft right bearing oil injection hole, 25-Output shaft right bearing mounting groove, 251-Second inner pipe;

[0051] 3-Winding assembly, 31-Rotor shaft, 311-Rotor shaft oil slinger hole, 32-Rotor core, 33-Motor left bearing, 34-Motor right bearing, 35-Stator core, 351-Shaft guide oil groove, 36-Stator winding; 4-Differential reduction assembly, 41-Input shaft, 411-Input shaft oil slinger hole. Detailed Implementation

[0052] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of the present invention; the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0053] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. Similar reference numerals and letters denote similar items in the following figures; therefore, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0054] like Figure 1-7 As shown, this embodiment provides an electric drive housing, including a motor housing 1 and a differential housing 2. The motor housing 1 has a receiving cavity 10 for mounting a winding assembly 3. The differential housing 2, after being closed with the motor housing 1, forms a mounting cavity 20 for mounting a differential assembly 4. The receiving cavity 10 and the mounting cavity 20 are interconnected.

[0055] In addition, such as Figure 5-7 As shown, this embodiment also provides an electric drive device, including the electric drive housing described above, and the winding assembly 3 and the differential reduction assembly 4 are also installed in the electric drive housing.

[0056] The winding assembly 3 includes a rotor assembly and a stator assembly. In this embodiment, the rotor assembly includes a rotor shaft 31, a rotor core 32 disposed on the rotor shaft 31, and a left motor bearing 33 and a right motor bearing 34 respectively disposed at both ends of the rotor shaft 31; the stator assembly includes a stator core 35 and stator windings 36 disposed at both ends of the stator core 35.

[0057] The differential reduction component 4 includes an input shaft 41, an intermediate shaft, and an output shaft. The input shaft 41, the intermediate shaft, and the output shaft are typically connected by gear meshing. Specific gear meshing methods can be found in existing technologies and will not be elaborated here. A left bearing and a right bearing are respectively provided at both ends of the input shaft 41, the intermediate shaft, and the output shaft. It should be understood that the terms "left" and "right," such as "left bearing" and "right bearing," used in this embodiment are merely descriptions based on the orientation of the relevant drawings for the purpose of introducing this solution and should not be construed as limitations on the relevant features.

[0058] As a preferred embodiment, in this case, a main oil passage 11 is provided above the receiving cavity 10 and the mounting cavity 20, such as... Figure 2 , 5 As shown, the main oil passage 11 is arranged horizontally along the axial direction of the receiving cavity 10; an oil supply passage 12 is also provided on the motor housing 1, such as... Figure 3As shown, the oil supply channel 12 is vertically arranged, and the main oil channel 11 is connected to the top of the oil supply channel 12 so that the oil is supplied to the main oil channel 11 through the oil supply channel 12, and then the oil is transported to the required location through the main oil channel 11.

[0059] Furthermore, such as Figure 5 As shown, a main oil passage extension section 21 and a diversion section 22 connected to the main oil passage extension section 21 are provided in the differential housing 2 corresponding to the main oil passage 11. The diversion section 22 is also arranged vertically. The top of the diversion section 22 is connected to the main oil passage extension section 21. The main oil passage extension section 21 is directly connected to the main oil passage extension section 21 as the differential housing 2 and the motor housing 1 are mutually covered.

[0060] As a preferred embodiment, in this embodiment, both the input shaft 41 and the rotor shaft 31 are hollow inside. The right end of the rotor shaft 31 is sleeved with the input shaft 41, and the right end of the input shaft 41 is connected to the differential housing 2. The bottom of the diversion section 22 is connected to the interior of the input shaft 41, so that oil can be transported to the interior of the input shaft 41 and the rotor shaft 31 through the main oil passage 11.

[0061] Furthermore, a plurality of input shaft oil-throwing holes 411 are provided on the input shaft 41. In this embodiment, the input shaft oil-throwing holes 411 are inclined. One end of the input shaft oil-throwing hole 411 is connected to the interior of the input shaft 41, and the other end is positioned directly opposite the right bearing 34 of the motor. This allows the input shaft 41 to throw the oil inside onto the right bearing 34 of the motor during rotation, thereby achieving lubrication and cooling of the right bearing 34 of the motor.

[0062] At the end of the main oil passage 11 away from the differential housing 2, there is an oil injection hole 111 for the left bearing of the motor, so that the oil in the main oil passage 11 can be directly sprayed to the installation position of the left bearing 33 of the motor to achieve lubrication and cooling of the left bearing 33 of the motor.

[0063] Furthermore, in this embodiment, a plurality of rotor shaft oil-throwing holes 311 are also provided on the rotor shaft 31. One end of the rotor shaft oil-throwing hole 311 is connected to the interior of the rotor shaft 31, and the other end is set towards the rotor core 32, so that the rotor shaft 31 can throw the oil inside it onto the rotor core 32 during rotation, thereby achieving lubrication and cooling of the rotor core 32.

[0064] In addition, such as Figure 1 , 2As shown, in this embodiment, at least one stator core oil guide groove 13 is provided in the middle of the inner wall of the receiving cavity 10. The stator core oil guide groove 13 is arranged in a circumferential manner on the inner wall surface of the receiving cavity 10. A stator core oil inlet hole 112 is provided on the main oil passage 11. The stator core oil inlet hole 112 is connected to the main oil passage 11 and the stator core oil guide groove 13 respectively. Through the main oil passage 11 and the stator core oil inlet hole 112, the oil in the main oil passage 11 can be transported to the stator core oil guide groove 13, and then act on the stator core 35, thereby realizing the lubrication and cooling of the stator core 35.

[0065] As a preferred option, such as Figure 7 As shown, in this embodiment, a plurality of axial guide oil grooves 351 are provided on the outer surface of the stator core 35. The plurality of axial guide oil grooves 351 are evenly provided on the outer surface of the stator core 35. The provided axial guide oil grooves 351 can be used in conjunction with the stator core oil guide grooves 13, so that the oil in the stator core oil guide grooves 13 can be dispersed through the axial guide oil grooves 351 and act on the outer surface of the stator core 35 in an axially dispersed manner, thereby further improving the lubrication and cooling effect on the stator core 35.

[0066] Furthermore, a winding end oil passage 14 is also provided above the receiving cavity 10, and the winding end oil passage 14 is connected to the main oil passage 11; in this embodiment, the winding end oil passage 14 is arranged radially along the receiving cavity 10 and is located at both ends of the receiving cavity 10, and a plurality of winding end oil injection holes 141 are opened at both ends of the inner wall of the receiving cavity 10, and the winding end oil injection holes 141 are connected to the winding end oil passage 14 and the main oil passage 11. Figure 6 As shown, the winding end oil passage 14 is arranged radially, which facilitates the distributed arrangement of several winding end oil spray holes 141. In this embodiment, the winding end oil spray holes 141 are set to four at each end. The oil is sprayed onto the stator winding 36 through the main oil passage 11, the winding end oil passage 14, and the winding end oil spray holes 141, and then penetrates evenly under the action of gravity, thereby improving the cooling effect on the stator winding 36.

[0067] In addition, such as Figure 3 As shown, the mounting cavity 20 is located on one side of the motor housing 1, and the motor housing 1 is provided with an input shaft left bearing mounting groove 15, an intermediate shaft left bearing mounting groove 16, and an output shaft left bearing mounting groove 17. Figure 4As shown, the mounting cavity 20 is located on one side of the differential housing 2. The differential housing 2 is provided with a right bearing mounting groove 23 for the input shaft, a right bearing mounting groove 24 for the intermediate shaft, and a right bearing mounting groove 25 for the output shaft. The right end of the input shaft 41 is installed in the right bearing mounting groove 23 for the input shaft.

[0068] As a preferred embodiment, an oil injection hole 113 for the mounting cavity is provided on the main oil passage 11 in this embodiment. Through the oil injection hole 113 for the mounting cavity, oil can be directly injected into the mounting cavity 20 through the main oil passage 11, thereby improving the lubrication and cooling effect on the differential reduction assembly 4.

[0069] Furthermore, in this embodiment, an oil collecting plate 151 is provided at the bottom of the left bearing mounting groove 15 of the input shaft. The oil collecting plate 151 has an arc-shaped segment adapted to the shape of the left bearing mounting groove 15 of the input shaft. Through the oil collecting plate 151, the splashed oil in the mounting cavity 20 can be collected, and the collected oil can be used to lubricate and cool the left bearing of the input shaft.

[0070] An oil injection hole 231 for the right input shaft bearing is provided on the right input shaft bearing mounting groove 23. The oil injection hole 231 is connected to the diversion section 22. Through the oil injection hole 231, the oil can be sprayed into the right input shaft bearing mounting groove 23 after passing through the main oil passage 11, the main oil passage extension section 21 and the diversion section 22, so as to achieve lubrication and cooling of the right input shaft bearing.

[0071] In addition, an oil spray hole 161 for the intermediate shaft left bearing is provided on the intermediate shaft left bearing mounting groove 16, and the intermediate shaft left bearing oil spray hole 161 is connected to the oil supply channel 12; through the intermediate shaft left bearing oil spray hole 161, oil can be sprayed from the oil supply channel 12 into the intermediate shaft left bearing mounting groove 16 to achieve lubrication and cooling of the intermediate shaft left bearing.

[0072] An oil spray hole 241 for the right bearing of the intermediate shaft is provided on the mounting groove 24. The oil spray hole 241 is connected to the extension section 21 of the main oil passage. By providing the oil spray hole 241, oil can be sprayed into the mounting groove 24 of the right bearing of the intermediate shaft through the main oil passage 11 and the extension section 21, so as to achieve lubrication and cooling of the right bearing of the intermediate shaft.

[0073] Furthermore, in this embodiment, a first inner conduit 171 is provided connecting the left output shaft bearing mounting groove 17 and the left intermediate shaft bearing mounting groove 16, and a second inner conduit 251 is provided connecting the right output shaft bearing mounting groove 25 and the right intermediate shaft bearing mounting groove 24. Through the first inner conduit 171, oil in the left intermediate shaft bearing mounting groove 16 can flow to the left output shaft bearing mounting groove 17, achieving lubrication and cooling of the left output shaft bearing; while through the second inner conduit 251, oil in the right intermediate shaft bearing mounting groove 24 can flow to the right output shaft bearing mounting groove 25, achieving lubrication and cooling of the right output shaft bearing.

[0074] In this embodiment, when lubricating and cooling the winding assembly 3 or the differential reduction assembly 4, there is no need to set up an additional oil injection pipe for auxiliary oil injection and oil guiding, which can effectively reduce the number of corresponding parts and reduce costs; at the same time, the structure is simpler, which facilitates the improvement of assembly efficiency and the control of assembly quality, and has better application economic benefits.

[0075] The above description is merely a specific embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should also be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0076] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An electric drive housing, characterized in that, Includes a motor housing, wherein the motor housing is provided with a receiving cavity for mounting the winding assembly and a main oil passage for oil delivery; At least one stator core oil guide groove is provided in a circumferential manner in the middle of the inner wall of the cavity, and a stator core oil inlet is provided on the main oil passage. The stator core oil inlet is connected to the main oil passage and the stator core oil guide groove respectively. The inner wall of the accommodating cavity is provided with several winding end oil injection holes at both ends, and the winding end oil injection holes are connected to the main oil passage. It also includes a differential reduction housing, which, when closed with the motor housing, forms a mounting cavity for installing the differential reduction assembly; The differential housing is provided with a main oil passage extension section and a diversion section connected to the main oil passage extension section. The motor housing is provided with a mounting groove for the left bearing of the intermediate shaft and an oil supply channel. The intermediate shaft left bearing mounting groove is provided with an intermediate shaft left bearing oil injection hole, which is connected to the oil supply channel; The oil supply channel is connected to the main oil passage; The differential housing is provided with an intermediate shaft right bearing mounting groove, and an intermediate shaft right bearing oil injection hole is opened in the intermediate shaft right bearing mounting groove. The intermediate shaft right bearing oil injection hole is connected to the main oil passage extension section. The motor housing is provided with a left bearing mounting groove for the output shaft, and a first inner pipe is provided to connect the left bearing mounting groove for the output shaft and the left bearing mounting groove for the intermediate shaft. The differential housing is provided with an output shaft right bearing mounting groove, and a second inner pipe is provided to connect the output shaft right bearing mounting groove and the intermediate shaft right bearing mounting groove.

2. The electric drive housing according to claim 1, characterized in that, The main oil passage is arranged above the receiving cavity along the axial direction of the receiving cavity, and a winding end oil passage communicating with it is provided on the main oil passage; The winding end oil passages are arranged radially along the receiving cavity and are located at both ends of the receiving cavity, and the winding end oil injection holes are connected to the winding end oil passages.

3. The electric drive housing according to claim 1, characterized in that, The motor housing is provided with an input shaft left bearing mounting groove, and an oil collection plate is provided at the bottom of the input shaft left bearing mounting groove. The oil collection plate has an arc-shaped segment that matches the shape of the input shaft left bearing mounting groove.

4. The electric drive housing according to claim 3, characterized in that, The differential housing is provided with an input shaft right bearing mounting groove, and an input shaft right bearing oil injection hole is opened in the input shaft right bearing mounting groove. The input shaft right bearing oil injection hole is connected to the flow divider section.

5. The electric drive housing according to any one of claims 1-4, characterized in that, The motor housing is provided with a mounting groove for the left bearing of the intermediate shaft and an oil supply channel. The intermediate shaft left bearing mounting groove is provided with an intermediate shaft left bearing oil injection hole, which is connected to the oil supply channel; The oil supply channel is connected to the main oil channel.

6. The electric drive housing according to claim 1, characterized in that, The main oil passage is provided with an oil injection hole for the mounting cavity.

7. An electric drive device, characterized in that, An electric drive housing comprising any one of claims 1-5.

8. The electric drive device according to claim 7, characterized in that, Includes a differential reduction assembly and an electric drive housing according to any one of claims 1-5; The differential reduction component includes an input shaft, which is hollow inside. The right end of the input shaft is located in the right bearing mounting groove of the input shaft, and the diversion section is connected to the interior of the input shaft.

9. The electric drive device according to claim 8, characterized in that, It also includes a winding assembly, which includes a rotor shaft, a left motor bearing and a right motor bearing respectively disposed at both ends of the rotor shaft; The rotor shaft is hollow inside and is sleeved with the input shaft. The input shaft is provided with an oil slinger hole for supplying fluid to the right bearing of the motor.

10. The electric drive device according to claim 9, characterized in that, The main oil passage is provided with a motor left bearing oil injection hole for supplying fluid to the motor left bearing.

11. The electric drive device according to claim 10, characterized in that, The rotor shaft is provided with a rotor core and an oil-throwing hole for supplying liquid to the rotor core.

12. The electric drive device according to any one of claims 8-11, characterized in that, The winding assembly also includes a stator core, and the outer surface of the stator core is provided with a plurality of axial guide oil grooves.

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