Electric assembly, drive axle assembly and vehicle

Abstract

The present invention discloses an electric assembly, a drive axle assembly and a vehicle. The electric assembly includes: a transmission, which includes a housing and a shift mechanism, and the shift mechanism is arranged in the housing; a motor, which is arranged on one side of the housing in the thickness direction, and the output shaft of the motor passes through the housing and is connected to the shift mechanism; a power take-off, which is arranged on one side of the housing in the thickness direction; a lubricating mechanism, which is arranged on the other side of the housing in the thickness direction, and an oil pump is arranged on the lubricating mechanism, and the oil pump is located below the motor. According to the electric assembly of the present invention, by integrating the power take-off on the housing and arranging the oil pump below the motor, the space on the housing is effectively utilized, the height dimension of the electric assembly is reduced, and the structure of the electric assembly is compact. The arrangement of the lubricating mechanism meets the lubrication requirements of the electric assembly, and improves the working reliability and service life of the electric assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to an electric assembly, a drive axle assembly and a vehicle. Background Art

[0002] In the prior art, the power system of vehicles tends to be integrated, and the integrated drive axle has the characteristics of compact structure, light weight, short transmission path, high efficiency, etc. However, the motor of the power system is usually integrated with the reducer, resulting in a small space for the housing of the power system, making it impossible to install some additional devices required by the vehicle (such as power take-off devices, differential locks and other special function devices) on the housing. In addition, as the peak speed that the motor can achieve is getting higher and higher, the transmission system has higher and higher requirements for the lubrication mechanism. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an electric assembly, which effectively utilizes the space on the housing by integrating a power take-off on the housing and arranging an oil pump below the motor, reduces the height dimension of the electric assembly, makes the structure of the electric assembly compact, and the arrangement of the lubrication mechanism meets the lubrication requirements of the electric assembly, thereby improving the working reliability and service life of the electric assembly.

[0004] Another object of the present invention is to provide a drive axle assembly including the above electric assembly.

[0005] Another object of the present invention is to provide a vehicle including the above-mentioned drive axle assembly.

[0006] According to an embodiment of the first aspect of the present invention, the electric assembly includes: a transmission, the transmission includes a housing and a gear mechanism, the gear mechanism is arranged in the housing; a motor, the motor is arranged on one side of the housing in the thickness direction, and the output shaft of the motor passes through the housing and is connected to the gear mechanism; a power take-off, the power take-off is arranged on the one side of the housing in the thickness direction; a lubricating mechanism, the lubricating mechanism is arranged on the other side of the housing in the thickness direction, the lubricating mechanism is provided with an oil pump, and the oil pump is located below the motor; wherein the power take-off switches between a decoupled state and a coupled state, and when the power take-off is in the decoupled state, the power transmission between the gear mechanism and the power take-off is disconnected; when the power take-off is in the coupled state, the power transmission between the gear mechanism and the power take-off is connected.

[0007] According to the electric assembly of the embodiment of the present invention, the power take-off is integrated on the housing and the oil pump is arranged below the motor, so that the space on the housing is effectively utilized, the height dimension of the electric assembly is reduced, and the structure of the electric assembly is compact. The setting of the lubrication mechanism meets the lubrication requirements of the electric assembly, thereby improving the working reliability and service life of the electric assembly.

[0008] According to some embodiments of the present invention, the electric assembly further includes: a differential, which is connected to the gear mechanism and is located on one side of the length direction of the housing; a differential lock, which is connected to the differential, and the differential lock and the power take-off are both arranged on the same side of the thickness direction of the housing, and the differential lock is located between the motor and the power take-off in the length direction of the housing.

[0009] According to some embodiments of the present invention, the transmission includes a power input shaft, an intermediate shaft, a power output shaft, a first gear gear pair, a second gear gear pair and a shifting mechanism, the power input shaft is connected to the output shaft of the motor, the intermediate shaft is transmission-connected to the power input shaft, and the power output shaft and the intermediate shaft are transmission-connected via the first gear gear pair or the second gear gear pair; wherein the shifting mechanism is configured to be switchable between a first state and a second state, when the shifting mechanism is in the first state, the intermediate shaft and the power output shaft are transmission-connected via the first gear gear pair, and when the shifting mechanism is in the second state, the intermediate shaft and the power output shaft are transmission-connected via the second gear gear pair; when the power take-off is in the coupling state, the power take-off is meshed with the first gear gear pair or the second gear gear pair, and the differential lock is located between the power output shaft and the power take-off in the length direction of the housing.

[0010] According to some embodiments of the present invention, the first gear gear pair includes a first gear driving gear and a first gear driven gear meshing with each other, the second gear gear pair includes a second gear driving gear and a second gear driven gear meshing with each other, the first gear driving gear and the second gear driving gear are both arranged on the intermediate shaft, and the first gear driven gear, the shifting mechanism and the second gear driven gear are all arranged on the power output shaft; when the power take-off is in the coupled state, the power take-off is meshed with the second gear driving gear.

[0011] According to some embodiments of the present invention, the lubrication mechanism includes: a mounting plate, an oil inlet pipe is provided on a side of the mounting plate away from the housing; a coarse filter, the coarse filter is provided on a side of the mounting plate adjacent to the housing, the coarse filter is connected to the oil pump through the oil inlet pipe; a fine filter, the fine filter is provided on a side of the mounting plate adjacent to the housing, the fine filter is connected to the transmission; wherein the oil pump, the coarse filter and the fine filter are all located below the motor, and the oil pump is located between the coarse filter and the fine filter in the length direction of the housing.

[0012] According to some embodiments of the present invention, the coarse filter installation position on the mounting plate in the height direction of the shell is lower than the oil pump installation position on the mounting plate, and the oil pump installation position in the height direction of the shell is lower than the fine filter installation position on the mounting plate.

[0013] According to some embodiments of the present invention, the lubrication mechanism further includes: an oil injection pipe, which is arranged on a side of the mounting plate adjacent to the shell, one end of the oil injection pipe is connected to the fine filter, and the other end of the oil injection pipe extends into the shell; an oil outlet pipe, which is arranged on a side of the mounting plate away from the shell, one end of the oil outlet pipe is connected to the fine filter; and an oil guide pipe, which is arranged on a side of the mounting plate adjacent to the shell, one end of the oil guide pipe is connected to the other end of the oil outlet pipe, and the other end of the oil guide pipe extends into the shell.

[0014] According to some embodiments of the present invention, a plurality of oil outlet holes are formed on the oil guide pipe, and the plurality of oil outlet holes are spaced apart along the axial direction of the oil guide pipe.

[0015] According to some embodiments of the present invention, the transmission further includes: a side plate, which is arranged on a side of the mounting plate away from the housing, the side plate having an oil circuit, one end of the oil circuit being connected to the fine filter, and the other end of the oil circuit being respectively connected to the fuel injection pipe and the fuel outlet pipe.

[0016] The drive axle assembly according to the second aspect of the present invention comprises: a bridge housing; an electric assembly, wherein the differential and the differential lock of the electric assembly are arranged in the bridge housing, and the electric assembly is the electric assembly according to the first aspect of the present invention; a half-shaft, wherein the half-shaft is arranged in the bridge housing, and the differential and the differential lock are both connected to the half-shaft; and a wheel-end reducer, wherein the wheel-end reducer is connected to the half-shaft.

[0017] A vehicle according to an embodiment of a third aspect of the present invention comprises a drive axle assembly according to an embodiment of the second aspect of the present invention.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a schematic diagram of an electric assembly according to an embodiment of the present invention;

[0021] Figure 2 is a partial schematic diagram of an electric assembly according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of a gear mechanism according to an embodiment of the present invention;

[0023] Figure 4 is a cross-sectional view of a transmission according to an embodiment of the present invention;

[0024] Figure 5 is a side view of a lubrication mechanism according to an embodiment of the present invention;

[0025] Figure 6 is a schematic diagram of a lubrication mechanism according to an embodiment of the present invention;

[0026] Figure 7 is a schematic diagram of a side panel according to an embodiment of the present invention;

[0027] Figure 8 is a schematic diagram of a side panel according to another angle of an embodiment of the present invention;

[0028] Fig. 9 is a partial schematic enlarged view of a side panel according to an embodiment of the present invention;

[0029] Fig.10 is a schematic diagram of a drive axle assembly according to an embodiment of the present invention;

[0030] Fig.11 is a cross-sectional view of a drive axle assembly according to an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 100. Electric assembly;

[0033] 1. Transmission; 11. Housing; 12. Shift mechanism; 13. Power input shaft; 14. Intermediate shaft; 15. Power output shaft; 16. First gear gear pair; 161. First gear driving gear; 162. First gear driven gear; 17. Second gear gear pair; 171. Second gear driving gear; 172. Second gear driven gear; 18. Shift mechanism; 19. Side plate; 191. Oil inlet; 192. Oil outlet; 193. Through hole; 194. Oil trough; 2. Motor; 3. Power take-off; 4. Lubrication mechanism; 41. Oil pump; 42. Mounting plate; 43. Coarse filter; 44. Fine filter; 45. Oil inlet pipe; 46. Oil injection pipe; 47. Oil outlet pipe; 48. Oil guide pipe; 5. Differential; 6. Differential lock;

[0034] 200, drive axle assembly;

[0035] 7. Bridge housing; 8. Wheel end reducer. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 9 An electric powertrain 100 according to an embodiment of a first aspect of the present invention is described.

[0037] like Figure 1 As shown, the electric assembly 100 according to the first embodiment of the present invention includes a transmission 1, a motor 2, a power take-off 3 and a lubrication mechanism 4.

[0038] Specifically, the transmission 1 includes a housing 11 and a shift mechanism 12, wherein the shift mechanism 12 is disposed in the housing 11. The motor 2 is disposed in the thickness direction of the housing 11 (for example, Figure 1 The output shaft of the motor 2 passes through the housing 11 and is connected to the shift mechanism 12. The power take-off 3 is arranged on the one side of the housing 11 in the thickness direction. The lubricating mechanism 4 is arranged on the other side of the housing 11 in the thickness direction. The lubricating mechanism 4 is provided with an oil pump 41, and the oil pump 41 is located below the motor 2.

[0039] Among them, the power take-off 3 switches between a decoupled state and a coupled state. When the power take-off 3 is in the decoupled state, the power transmission between the gear mechanism 12 and the power take-off 3 is disconnected; when the power take-off 3 is in the coupled state, the power transmission between the gear mechanism 12 and the power take-off 3 is connected.

[0040] For example, in Figure 1 and Figure 2 In the example, the axial direction of the motor 2 is consistent with the thickness direction of the housing 11, the output shaft of the motor 2 passes through the housing 11 and is connected to the shift mechanism 12, and the motor 2 and the shift mechanism 12 are connected along the length direction of the housing 11 (for example, Figure 1The motor 2 is arranged in the left and right directions in the housing 11, and the motor 2 is located at one end in the length direction of the housing 11. By arranging the motor 2 and the power take-off 3 on the same side in the thickness direction of the housing 11, that is, integrating the power take-off 3 on the housing of the transmission 1, the structure of the electric assembly 100 is made more compact.

[0041] Among them, the power take-off 3 is a component that can use part of the power output by the transmission 1 to achieve actions other than driving of the vehicle (such as driving or parking power take-off). When the power take-off 3 is in a coupled state, the shift mechanism 12 and the power take-off 3 are connected, and the power of the motor 2 is transmitted to the power take-off 3 through the shift mechanism 12. The power output by the power take-off 3 can achieve driving or parking power take-off of the vehicle. Integrating the power take-off 3 on the housing 11 can shorten the power transmission path between the power take-off 3 and the shift mechanism 12, thereby improving the working efficiency of the electric assembly 100.

[0042] In addition, the lubrication mechanism 4 is arranged on the other side of the housing 11 in the thickness direction, which effectively utilizes the installation space on the housing 11. The arrangement of the lubrication mechanism 4 meets the lubrication requirements of the electric assembly 100 and improves the working reliability and service life of the electric assembly 100.

[0043] When the electric assembly 100 is applied to a vehicle, the thickness direction of the electric assembly 100 (i.e., the axial direction of the motor 2) is parallel to the width direction of the vehicle, and the height direction of the electric assembly 100 is parallel to the height direction of the vehicle. In order to avoid interference between the motor 2 and other components of the vehicle chassis, the motor 2 is usually arranged on one side of the housing 11 in the height direction, thereby reserving space below the motor 2. Therefore, the oil pump 41 is arranged below the motor 2, which effectively utilizes the space on the housing 11 and can reduce the height dimension of the electric assembly 100, making the structure of the electric assembly 100 compact.

[0044] According to the electric assembly 100 of the embodiment of the present invention, the power take-off 3 is integrated on the housing 11 and the oil pump 41 is arranged below the motor 2, so that the space on the housing 11 is effectively utilized, so that the structure of the electric assembly 100 is compact, and the setting of the lubrication mechanism 4 meets the lubrication requirements of the electric assembly 100, thereby improving the working reliability and service life of the electric assembly 100.

[0045] According to some embodiments of the present invention, the electric assembly 100 further includes a differential 5 and a differential lock 6. Specifically, the differential 5 is connected to the shift mechanism 12, and the differential 5 is located on one side in the length direction of the housing 11. The differential lock 6 is connected to the differential 5, and the differential lock 6 and the power take-off 3 are both arranged on the same side in the thickness direction of the housing 11, and the differential lock 6 is located between the motor 2 and the power take-off 3 in the length direction of the housing 11.

[0046] In specific implementation, the arrangement of the differential lock 6 and the power take-off 3 is conducive to further improving the utilization rate of the installation space on the housing 11 and meeting the multi-functional requirements of the electric assembly 100. The differential lock 6 is connected to the differential 5. When the differential lock 6 is in working condition, the differential function of the differential 5 can be lost, so that the left and right wheels of the vehicle are not differential, which is convenient for the vehicle to get out of trouble.

[0047] According to some embodiments of the present invention, Figure 1-Figure 4 As shown, the transmission 1 includes a power input shaft 13, an intermediate shaft 14, a power output shaft 15, a first gear gear pair 16, a second gear gear pair 17 and a shift mechanism 18. The power input shaft 13 is connected to the output shaft of the motor 2, the intermediate shaft 14 is transmission-connected to the power input shaft 13, and the power output shaft 15 and the intermediate shaft 14 are transmission-connected via the first gear gear pair 16 or the second gear gear pair 17.

[0048] The shift mechanism 18 is configured to be switchable between a first state and a second state. When the shift mechanism 18 is in the first state, the intermediate shaft 14 and the power output shaft 15 are connected by transmission through the first gear pair 16. When the shift mechanism 18 is in the second state, the intermediate shaft 14 and the power output shaft 15 are connected by transmission through the second gear pair 17. When the power take-off 3 is in the coupling state, the power take-off 3 is meshed with the first gear pair 16 or the second gear pair 17, and the differential lock 6 is located between the power output shaft 15 and the power take-off 3 in the length direction of the housing 11.

[0049] For example, in Figure 4 In the example, the power input shaft 13, the intermediate shaft 14, and the power output shaft 15 are arranged in parallel. After the motor 2 is started, the power of the motor 2 is transmitted to the power input shaft 13 and the intermediate shaft 14 in sequence through the output shaft of the motor 2. At this time, the power gear position can be adjusted by the shift mechanism 18, that is, when the shift mechanism 18 is in the first state, the power of the intermediate shaft 14 is transmitted to the power output shaft 15 via the first gear gear pair 16; when the shift mechanism 18 is in the second state, the power of the intermediate shaft 14 is transmitted to the power output shaft 15 via the second gear gear pair 17; thereby, the motor 2 can work in the high-efficiency range as much as possible under different working conditions, thereby improving the driving performance of the electric assembly 100.

[0050] In addition, when the power take-off 3 is in the coupling state, the power take-off 3 is meshed with the first gear pair 16 or the second gear pair 17, so that the vehicle can take power while driving or parking. The differential lock 6 is arranged between the power output shaft 15 and the power take-off 3, making full use of the gap between the power output shaft 15 and the power take-off 3, making the structure of the electric assembly 100 more compact.

[0051] It should be noted that the output shaft of the motor 2 and the power input shaft 13 may be connected via a spline, but is not limited thereto, so as to ensure the reliability of the connection between the output shaft of the motor 2 and the power input shaft 13 .

[0052] According to some specific embodiments of the present invention, Figure 4 As shown, the first gear gear pair 16 includes a first gear driving gear 161 and a first gear driven gear 162 meshing with each other, the second gear gear pair 17 includes a second gear driving gear 171 and a second gear driven gear 172 meshing with each other, the first gear driving gear 161 and the second gear driving gear 171 are both arranged on the intermediate shaft 14, and the first gear driven gear 162, the shift mechanism 18 and the second gear driven gear 172 are all arranged on the power output shaft 15. When the power take-off 3 is in the coupled state, the power take-off 3 meshes with the second gear driving gear 171.

[0053] It should be noted that the first gear driving gear 161 or the second gear driving gear 171 can be connected to the intermediate shaft 14 through a spline, but is not limited thereto, so as to ensure the reliability of the connection between the first gear driving gear 161 or the second gear driving gear 171 and the intermediate shaft 14. The first gear driven gear 162 or the second gear driven gear 172 is arranged on the power output shaft 15 through a needle bearing, but is not limited thereto.

[0054] When the shift mechanism 18 is in the first state, the first gear driving gear 161 drives the first gear driven gear 162 to rotate, realizing the power output of the first gear; when the shift mechanism 18 is in the second state, the second gear driving gear 171 drives the second gear driven gear 172 to rotate, realizing the power output of the second gear, so that the motor 2 can work in the high efficiency range as much as possible under different working conditions. The shift mechanism 18 is arranged on the power output shaft 15, which saves the axial space of the electric assembly 100 as a whole, and facilitates the miniaturization design of the electric assembly 100.

[0055] When the power take-off 3 is in the coupling state, the power take-off 3 is meshed with the second gear driving gear 171, and the power of the motor 2 is transmitted to the power input shaft 13 and the intermediate shaft 14 in sequence through the output shaft of the motor 2. The second gear driving gear 171 rotates together with the intermediate shaft 14 and transmits the power to the power take-off 3, thereby realizing the power output of the power take-off 3.

[0056] According to some embodiments of the present invention, Figure 5 and Figure 6 As shown, the lubrication mechanism 4 includes a mounting plate 42 , a coarse filter 43 and a fine filter 44 .

[0057] An oil inlet pipe 45 is provided on the side of the mounting plate 42 away from the housing 11. A coarse filter 43 is provided on the side of the mounting plate 42 adjacent to the housing 11, and the coarse filter 43 is connected to the oil pump 41 through the oil inlet pipe 45. A fine filter 44 is provided on the side of the mounting plate 42 adjacent to the housing 11, and the fine filter 44 is connected to the transmission 1.

[0058] For example, in Figure 5 and Figure 6 In the example, the coarse filter 43 and the oil pump 41 are respectively located on both sides of the mounting plate 42 in the thickness direction. The coarse filter 43 can be connected to the oil shell of the vehicle. The lubricating oil filtered by the coarse filter 43 enters the oil pump 41 through the oil inlet pipe 45. The lubricating oil pumped out by the oil pump 41 is filtered again by the fine filter 44 and then lubricated to the components in the transmission 1. The flow path of the lubricating oil will be as follows: Figure 4 Proceed in the direction indicated by the arrow.

[0059] Among them, the oil pump 41, the coarse filter 43 and the fine filter 44 are all located below the motor 2. In the length direction of the housing 11, the oil pump 41 is located between the coarse filter 43 and the fine filter 44, making the overall structure of the electric assembly 100 more compact. The oil pump 41, the coarse filter 43 and the fine filter 44 are arranged below the motor 2, which not only saves the space in the height direction of the electric assembly 100, but also ensures that the oil pump 41 will not suck in air when sucking oil, avoiding affecting the lubrication of the electric assembly 100. As a result, the lubrication mechanism 4 can improve the lubrication requirements of the electric assembly 100, improve the reliability and efficiency of the electric assembly 100, and adapt to high-torque and high-speed high-power conditions.

[0060] Optionally, the oil pump 41 may be an electronic oil pump, so that the oil pump 41 is not affected by the vehicle's running speed and can pump a stable amount of oil.

[0061] According to some specific embodiments of the present invention, the installation position of the coarse filter 43 on the mounting plate 42 is lower than the installation position of the oil pump 41 on the mounting plate 42 in the height direction of the housing 11, and the installation position of the oil pump 41 is lower than the installation position of the fine filter 44 on the mounting plate 42 in the height direction of the housing 11. In other words, the coarse filter 43 is at the lowest point of the entire lubrication mechanism 4, thereby preventing air from entering from the oil inlet of the coarse filter 43, thereby preventing the oil pump 41 from sucking air when sucking oil, which affects the lubrication of the transmission 1. This arrangement ensures the working reliability of the lubrication mechanism 4, thereby improving the reliability and efficiency of the electric assembly 100 to adapt to high-torque and high-speed high-power conditions.

[0062] Furthermore, if Figure 5 and Figure 6 As shown, the lubrication mechanism 4 further includes an oil injection pipe 46 , an oil outlet pipe 47 and an oil guide pipe 48 .

[0063] The fuel injection pipe 46 is arranged on a side of the mounting plate 42 adjacent to the housing 11, one end of the fuel injection pipe 46 is connected to the fine filter 44, and the other end of the fuel injection pipe 46 extends into the housing 11. The oil outlet pipe 47 is arranged on a side of the mounting plate 42 away from the housing 11, one end of the oil outlet pipe 47 is connected to the fine filter 44. The oil guide pipe 48 is arranged on a side of the mounting plate 42 adjacent to the housing 11, one end of the oil guide pipe 48 is connected to the other end of the oil outlet pipe 47, and the other end of the oil guide pipe 48 extends into the housing 11.

[0064] Specifically, a portion of the lubricating oil filtered from the fine filter 44 can enter the transmission 1 through the oil injection pipe 46, and another portion of the lubricating oil can enter the transmission 1 through the oil outlet pipe 47 and the oil guide pipe 48. This arrangement allows the lubricating oil to fully cover the transmission 1, increasing the coverage of the lubricating oil, thereby ensuring the working reliability of the lubricating mechanism 4. Moreover, the arrangement of the external pipeline is low in cost and saves space, avoids machining the oil channel on the housing 11 or the mounting plate 42 by machining, reduces the production process of the machining fixture, and further saves costs.

[0065] In a specific implementation, the lubricating oil in the oil injection pipe 46 is used to lubricate the bearings of the power input shaft 13. The power output shaft 15 can be a hollow structure, and a through hole is provided at a position adjacent to the bearing on the power output shaft 15. The oil guide pipe 48 can be inserted into the power output shaft 15 so that the lubricating oil in the oil guide pipe 48 is used to lubricate the bearings of the power output shaft 15. When the lubricating oil in the oil guide pipe 48 enters the hollow space of the power output shaft 15, it can be thrown to the bearing position that needs lubrication by centrifugal force.

[0066] According to some specific embodiments of the present invention, a plurality of oil outlet holes (not shown) are formed on the oil guide tube 48, and the plurality of oil outlet holes are spaced apart along the axial direction of the oil guide tube 48. In the description of the present invention, "plurality" means two or more. In this way, the lubricating oil can lubricate the components in the housing 11 through the plurality of oil outlet holes, thereby increasing the coverage of the lubricating oil and ensuring the working reliability of the lubricating mechanism 4.

[0067] According to some specific embodiments of the present invention, the transmission 1 further includes a side plate 19, which is disposed on a side of the mounting plate 42 away from the housing 11, and has an oil circuit, one end of which is connected to the fine filter 44, and the other end of which is respectively connected to the oil injection pipe 46 and the oil outlet pipe 47. In other words, the lubrication mechanism 4 uses an external pipeline combined with an oil circuit in the side plate 19, which saves space and reduces the manufacturing cost of the electric assembly 100.

[0068] like Figure 7 and Figure 8As shown, the oil circuit includes an oil inlet circuit 191 and an oil outlet circuit 192. The two ends of the oil inlet circuit 191 are respectively connected to the oil pump 41 and the fine filter 44, one end of the oil outlet circuit 192 is connected to the fine filter 44, and the other end of the oil outlet circuit 192 is respectively connected to the injection pipe 46 and the oil outlet pipe 47. The arrangement of the oil inlet circuit 191 and the oil outlet circuit 192 saves the installation space of the external pipeline, making the overall structure of the electric assembly 100 more compact.

[0069] It should be noted that the side plate 19 and the housing 11 may be connected by bolts, but not limited thereto, so as to ensure the reliability of the connection between the side plate 19 and the housing 11 .

[0070] Furthermore, if Fig. 9 As shown, a through hole 193 is opened on the side plate 19, one end of the through hole 193 is connected to the fine filter 44, and the other end of the through hole 193 is connected to the transmission 1. The lubricating oil lubricates the bearing of the power input shaft 13. Since the rotation speed of the power input shaft 13 is relatively high, the need for lubrication is relatively high. Therefore, the through hole 193 and the injection pipe 46 are provided at the same time, ensuring that the lubrication mechanism 4 can meet the lubrication needs of the power input shaft 13.

[0071] Furthermore, an oil groove 194 is provided on the side plate 19 , and the oil groove 194 is located between the power input shaft 13 and the intermediate shaft 14 . Part of the lubricating oil for the power input shaft 13 can flow through the oil groove 194 to the bearing of the intermediate shaft 14 to meet the lubrication requirement of the intermediate shaft 14 .

[0072] According to the second aspect of the present invention, the drive axle assembly 200 is as follows: Fig.10 and Fig.11 As shown, it includes a bridge housing 7, an electric assembly 100, a half shaft (not shown) and a wheel end reducer 8. Among them, the differential 5 and the differential lock 6 of the electric assembly 100 are arranged in the bridge housing 7, and the electric assembly 100 is the electric assembly 100 according to the embodiment of the first aspect of the present invention; the half shaft is arranged in the bridge housing 7, and the differential 5 and the differential lock 6 are connected to the half shaft; the wheel end reducer 8 is connected to the half shaft.

[0073] According to the drive axle assembly 200 of the embodiment of the present invention, by adopting the above-mentioned electric assembly 100, the differential 5 and the differential lock 6 of the electric assembly 100 are connected to the wheel-end reducer 8 through the half-shaft. When the differential lock 6 is working, the differential function of the differential 5 can be lost, so that the left and right wheels of the vehicle are not differential, which is convenient for the vehicle to get out of trouble, and the wheel-end reducer 8 can further increase the wheel-end torque and improve the driving ability of the whole vehicle.

[0074] It should be noted that the axle housing 7 and the housing 11 may be connected by bolts, but not limited thereto, so as to ensure the reliability of the connection between the axle housing 7 and the housing 11 .

[0075] In a specific implementation, one end of the differential 5 has a coupling tooth, and the differential lock 6 is provided with a sliding gear sleeve that meshes with the coupling tooth. The sliding gear sleeve of the differential lock 6 is connected to the half-shaft through a spline, and the wheel-end reducer 8 has a sun gear structure. The two ends of the half-shaft are respectively connected to the differential lock 6 and the sun gear of the wheel-end reducer 8 through splines.

[0076] When the shift mechanism 18 is in the first state, power is transmitted from the motor 2 to the power input shaft 13, and then transmitted from the intermediate shaft 14 to the power output shaft 15 through the first gear driving gear 161 and the first gear driven gear 162 that are meshed with each other. The power output shaft 15 then transmits the power to the differential 5, and the differential 5 transmits the power to the wheel-end reducer 8 through the half shaft.

[0077] When the shift mechanism 18 is in the second state, power is transmitted from the motor 2 to the power input shaft 13, and then transmitted from the intermediate shaft 14 to the power output shaft 15 through the mutually meshing second gear driving gear 171 and the second gear driven gear 172. The power output shaft 15 then transmits the power to the differential 5, and the differential 5 transmits the power to the wheel-end reducer 8 through the half shaft.

[0078] In this way, when the shift mechanism 18 is in the second state, the second gear driven gear 172 is an idler gear, serving as both a driven gear for the first-stage reduction and a driving gear for the second-stage reduction, thereby reducing one gear, saving axial space, making the structure more compact and reducing costs.

[0079] A vehicle according to a third aspect of the present invention (not shown) comprises a drive axle assembly 200 according to the embodiment of the second aspect of the present invention.

[0080] According to the vehicle of the embodiment of the present invention, by adopting the above-mentioned drive axle assembly 200, the vehicle can adapt to high-power working conditions with large torque and high speed, and the driving ability of the whole vehicle is relatively strong.

[0081] Other components and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0082] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0083] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0085] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electric assembly, characterized in that: include: A transmission, the transmission comprising a housing and a shift mechanism, the shift mechanism being arranged in the housing; A motor, the motor being arranged on one side of the shell in the thickness direction, and the output shaft of the motor passing through the shell and connected to the shift mechanism; A power take-off, the power take-off being arranged on the one side in the thickness direction of the shell; A lubricating mechanism, the lubricating mechanism is arranged on the other side of the shell in the thickness direction, the lubricating mechanism is provided with an oil pump, and the oil pump is located below the motor; A differential lock, wherein the differential lock and the power take-off are both arranged on the same side of the shell in the thickness direction, and the differential lock is located between the motor and the power take-off in the length direction of the shell; Wherein, the thickness direction of the shell is the width direction of the vehicle; The power take-off switches between a decoupling state and a coupling state. When the power take-off is in the decoupling state, the power transmission between the gear mechanism and the power take-off is disconnected; when the power take-off is in the coupling state, the power transmission between the gear mechanism and the power take-off is connected.

2. The electric assembly according to claim 1, characterized in that: Also includes: A differential, the differential is connected to the gear mechanism, the differential is located on one side in the length direction of the housing, and the differential lock is connected to the differential.

3. The electric assembly according to claim 2, characterized in that: The transmission comprises a power input shaft, an intermediate shaft, a power output shaft, a first gear pair, a second gear pair and a shift mechanism, wherein the power input shaft is connected to the output shaft of the motor, the intermediate shaft is drivingly connected to the power input shaft, and the power output shaft and the intermediate shaft are drivingly connected via the first gear pair or the second gear pair; Wherein, the shift mechanism is configured to be switchable between a first state and a second state, when the shift mechanism is in the first state, the intermediate shaft and the power output shaft are connected by the first gear pair, and when the shift mechanism is in the second state, the intermediate shaft and the power output shaft are connected by the second gear pair; When the power take-off is in the coupling state, the power take-off is meshed with the first gear pair or the second gear pair, and the differential lock is located between the power output shaft and the power take-off in the length direction of the housing.

4. The electric assembly according to claim 3, characterized in that: The first gear gear pair comprises a first gear driving gear and a first gear driven gear meshing with each other, the second gear gear pair comprises a second gear driving gear and a second gear driven gear meshing with each other, the first gear driving gear and the second gear driving gear are both arranged on the intermediate shaft, and the first gear driven gear, the shift mechanism and the second gear driven gear are all arranged on the power output shaft; When the power take-off is in the coupling state, the power take-off is meshed with the second gear driving gear.

5. The electric assembly according to any one of claims 1 to 4, characterized in that: The lubrication mechanism comprises: A mounting plate, wherein an oil inlet pipe is provided on a side of the mounting plate away from the housing; A coarse filter element, the coarse filter element is arranged on a side of the mounting plate adjacent to the housing, and the coarse filter element is connected to the oil pump through an oil inlet pipe; A fine filter, the fine filter is arranged on a side of the mounting plate adjacent to the housing, and the fine filter is communicated with the transmission; The oil pump, the coarse filter and the fine filter are all located below the motor, and the oil pump is located between the coarse filter and the fine filter in the length direction of the housing.

6. The electric assembly according to claim 5, characterized in that: In the height direction of the housing, the coarse filter installation position on the installation plate is lower than the oil pump installation position on the installation plate, and in the height direction of the housing, the oil pump installation position is lower than the fine filter installation position on the installation plate.

7. The electric assembly according to claim 5, characterized in that: The lubrication mechanism also includes: A fuel injection pipe, the fuel injection pipe is arranged on a side of the mounting plate adjacent to the housing, one end of the fuel injection pipe is connected to the fine filter, and the other end of the fuel injection pipe extends into the housing; An oil outlet pipe, the oil outlet pipe is arranged on a side of the mounting plate away from the housing, and one end of the oil outlet pipe is connected to the fine filter; An oil guide pipe is arranged on a side of the mounting plate adjacent to the shell, one end of the oil guide pipe is connected to the other end of the oil outlet pipe, and the other end of the oil guide pipe extends into the shell.

8. The electric assembly according to claim 7, characterized in that: A plurality of oil outlet holes are formed on the oil guide pipe, and the plurality of oil outlet holes are spaced apart along the axial direction of the oil guide pipe.

9. The electric assembly according to claim 7, characterized in that: The transmission also includes: A side plate is arranged on a side of the mounting plate away from the housing, the side plate has an oil circuit, one end of the oil circuit is connected to the fine filter, and the other end of the oil circuit is respectively connected to the fuel injection pipe and the fuel outlet pipe.

10. A drive axle assembly, characterized in that: include: Axle housing; An electric assembly, wherein the differential and the differential lock of the electric assembly are arranged in the bridge housing, and the electric assembly is an electric assembly according to any one of claims 1 to 9; A half shaft, wherein the half shaft is arranged in the bridge housing, and the differential and the differential lock are both connected to the half shaft; A wheel end reducer is connected to the half shaft.

11. A vehicle, characterized in that: Comprising the drive axle assembly according to claim 10.

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