Electric drive assembly and vehicle

Abstract

The utility model provides an electric drive assembly and a vehicle, and relates to the technical field of vehicle manufacturing. The driving motor is installed in the electric drive shell, and one part of the output half shaft is located in the electric drive shell and is in power connection with the driving motor. According to the electric drive assembly, the driving motor and the output half shaft are integrated in the electric drive shell, so that the overall structure of the electric drive assembly can be simplified, the integration level and the compactness of the electric drive assembly are improved, the space occupied by the electric drive assembly is reduced, the overall weight of the electric drive assembly is reduced, the light weight of the whole vehicle can be improved, and the cost is reduced. And the electric drive shell is an independent shell, so that the manufacturing difficulty and the manufacturing cost of the electric drive shell can be reduced, the using effect is better, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, and in particular to an electric drive assembly and a vehicle with the electric drive assembly. Background Art

[0002] With the development of the national economy and the continuous improvement of living standards, vehicles are becoming more and more important in daily life. The size of the vehicle, endurance performance, and manufacturing difficulty are all aspects that need to be considered when producing vehicles. Existing vehicles can drive the wheels to rotate through the electric drive assembly to drive the vehicle, but the existing electric drive assembly has low integration, poor compactness, difficulty in manufacturing, large space occupation, and heavy weight, which affects the size of the vehicle and the endurance performance of the vehicle, and there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an electric drive assembly with a simple structure, high integration and compactness, which can reduce the manufacturing difficulty and manufacturing cost, and occupies a small space, which can improve the weight of the whole vehicle and thus improve the vehicle endurance performance.

[0004] According to the electric drive assembly of the embodiment of the utility model, it includes: an electric drive housing; a drive motor and an output half shaft, wherein the drive motor is installed in the electric drive housing, and a part of the output half shaft is located in the electric drive housing and is dynamically connected to the drive motor.

[0005] According to the electric drive assembly of the embodiment of the utility model, the drive motor and the output half shaft are integrated into the electric drive housing, thereby simplifying the overall structure of the electric drive assembly, improving the integration and compactness of the electric drive assembly, reducing the space occupied by the electric drive assembly, and reducing the overall weight of the electric drive assembly, thereby improving the lightweight of the entire vehicle and improving the vehicle's endurance performance. The electric drive housing is a separate housing, which can reduce the manufacturing difficulty and manufacturing cost of the electric drive housing, and has a better use effect and a wider range of applications.

[0006] According to some embodiments of the utility model, the electric drive assembly further includes a transmission structure, which is located in the electric drive housing and is used to connect the drive motor with the output half-shaft power.

[0007] According to the electric drive assembly of some embodiments of the utility model, the transmission structure includes a differential and a drive shaft, the drive motor is provided with a motor shaft, the motor shaft and the differential are dynamically connected through the drive shaft, and the differential is dynamically connected to the output half-shaft.

[0008] According to the electric drive assembly of some embodiments of the present utility model, the axis of the motor shaft, the axis of the transmission shaft and the axis of the output half shaft are arranged in parallel.

[0009] According to the electric drive assembly of some embodiments of the present invention, in the axial projection along the motor shaft, the axis of the motor shaft, the axis of the transmission shaft and the axis of the output half shaft are distributed in a triangle.

[0010] According to the electric drive assembly of some embodiments of the present invention, the differential is coaxially distributed with the output half-shaft, and the differential is connected to the end of the output half-shaft.

[0011] According to the electric drive assembly of some embodiments of the present invention, the motor shaft extends in a first direction relative to the drive motor, and the output half shaft extends in a second direction relative to the differential, and the first direction is parallel to and opposite to the second direction.

[0012] According to the electric drive assembly of some embodiments of the present invention, at least a portion of the output half shaft is located radially outside the drive motor, and the distance between the output half shaft and the drive motor is set to a, and satisfies: a>3mm.

[0013] According to the electric drive assembly of some embodiments of the present invention, at least a portion of the output half shaft is provided with a thermal insulation coating.

[0014] According to the electric drive assembly of some embodiments of the utility model, the outer peripheral wall of the motor shaft is provided with a driving gear, the transmission shaft is provided with a first transmission gear, and the driving gear is meshed with the first transmission gear for transmission;

[0015] Furthermore, the transmission shaft is provided with a second transmission gear, the differential is provided with a differential gear outside, and the second transmission gear is meshed with the differential gear for transmission.

[0016] The utility model also provides a vehicle.

[0017] A vehicle according to an embodiment of the utility model comprises the electric drive assembly described in any one of the above items.

[0018] The advantages of the vehicle and the electric drive assembly compared to the prior art are the same and will not be elaborated here.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1This is a schematic diagram of the partial structure of the electric drive assembly according to an embodiment of the utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the partial structure of the electric drive assembly according to an embodiment of the utility model. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the partial structure of the electric drive assembly according to an embodiment of the utility model. Figure 3 ;

[0024] Figure 4 is a schematic structural diagram of an output half shaft according to an embodiment of the utility model;

[0025] Figure 5 It is a structural schematic diagram of an electric drive assembly according to an embodiment of the utility model.

[0026] Reference numerals:

[0027] Electric drive assembly 100,

[0028] Driving motor 1, motor shaft 11, driving gear 12, output half shaft 2, non-matching shaft section 21, thermal insulation coating 211, bearing matching shaft section 22, spline matching shaft section 23,

[0029] Transmission structure 3, differential 31, differential gear 311, transmission shaft 32, first transmission gear 321, second transmission gear 322, electric drive housing 4. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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.

[0033] Unless otherwise specified, the front-to-rear direction in the present invention is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0034] Reference below Figure 1-Figure 5 Description: The electric drive assembly 100 according to the embodiment of the utility model has a simple structure, high integration and compactness, can reduce the manufacturing difficulty and manufacturing cost, and occupies a small space, which can improve the lightweight of the whole vehicle and thus improve the vehicle endurance performance.

[0035] like Figure 1-Figure 5 As shown, an electric drive assembly 100 according to an embodiment of the present utility model includes: an electric drive housing 4 , a drive motor 1 and an output half shaft 2 .

[0036] The drive motor 1 is installed in the electric drive housing 4 , and a portion of the output half shaft 2 is located in the electric drive housing 4 and is power-connected to the drive motor 1 .

[0037] The electric drive assembly 100 is also called the electric drive axle powertrain, which is a combination of a motor and a gear. The electric drive assembly 100 can convert high voltage electricity into driving kinetic energy, and then transmit the driving kinetic energy to the wheels to drive the vehicle. The electric drive assembly 100 can connect the rotor of the motor to the half-axle power, and the rotor of the motor can reduce the speed through a gear set with a fixed gear ratio and then transmit it to the half-axle. At the same time, the torque output by the motor is amplified through the gear set to ensure the reliability of vehicle operation and improve vehicle operation performance.

[0038] Specifically, the electric drive assembly 100 is provided with an electric drive housing 4, which is arranged at the outermost side of the electric drive assembly 100, and can support and protect the internal structure of the electric drive assembly 100, and can provide an installation point for the internal structure of the electric drive assembly 100, thereby ensuring the operational reliability of the electric drive assembly 100. In addition, when the electric drive assembly 100 is installed in a vehicle, the vehicle body can be fixedly connected to the electric drive housing 4 of the electric drive assembly 100, thereby ensuring the installation reliability of the electric drive assembly 100, and the electric drive housing 4 can be set as a complete housing, that is, a complete installation cavity is formed inside the electric drive housing 4 to install the internal structure of the electric drive assembly 100.

[0039] Furthermore, the electric drive assembly 100 is provided with a drive motor 1 and an output half shaft 2, the drive motor 1 is installed in the electric drive housing 4, that is, the drive motor 1 is placed in the installation cavity, a part of the output half shaft 2 is also installed in the electric drive housing 4, and the other part can extend out of the electric drive housing 4, that is, the output half shaft 2 can be passed through the electric drive housing 4, so that the part of the output half shaft 2 located in the electric drive housing 4 can be connected to the power of the drive motor 1, and the part of the output half shaft 2 located outside the electric drive housing 4 can be connected to the wheel power, so that when the drive motor 1 is running, the power can be transmitted to the output half shaft 2, and then the wheel is driven to rotate through the output half shaft 2 to drive the vehicle to run.

[0040] In this way, the drive motor 1 and the output half shaft 2 can be arranged in the same electric drive housing 4, thereby avoiding the need to set up a separate housing for the drive motor 1 to reduce the installation cost, and simplifying the structure of the electric drive housing 4 to reduce the manufacturing difficulty and manufacturing cost. At the same time, the weight of the electric drive housing 4 can be reduced to reduce the overall weight of the electric drive assembly 100, so that when the electric drive assembly 100 is installed in the vehicle, the weight of the entire vehicle can be reduced to improve the lightweight of the vehicle, thereby extending the vehicle's endurance performance and improving the user experience.

[0041] In addition, the drive motor 1 and the output half-shaft 2 are integrated into the electric drive housing 4, which can avoid the need to reserve the thickness and rib size of the housing between the drive motor 1 and the output half-shaft 2 in addition to the safety gap, thereby shortening the distance between the drive motor 1 and the output half-shaft 2, so as to improve the integration and compactness of the electric drive assembly 100, reduce the space occupied by the electric drive assembly 100, improve the power density of the electric drive assembly 100, and achieve better use effect and wider application range.

[0042] According to the electric drive assembly 100 of the embodiment of the utility model, the drive motor 1 and the output half shaft 2 are integrated into the electric drive housing 4, thereby simplifying the overall structure of the electric drive assembly 100, improving the integration and compactness of the electric drive assembly 100, thereby reducing the space occupied by the electric drive assembly 100, and reducing the overall weight of the electric drive assembly 100, thereby improving the lightweight of the entire vehicle and improving the vehicle's endurance performance. The electric drive housing 4 is a separate housing, which can reduce the manufacturing difficulty and manufacturing cost of the electric drive housing 4, and has a better use effect and a wider range of applications.

[0043] In some embodiments, the electric drive assembly 100 further includes a transmission structure 3 , which is located in the electric drive housing 4 and is used to connect the drive motor 1 to the output half shaft 2 .

[0044] Specifically, the electric drive assembly 100 may also be provided with a transmission structure 3, which is also provided in the electric drive housing 4. Figure 1-Figure 3 As shown, the transmission structure 3 can connect the drive motor 1 with the output half-shaft 2, that is, the drive motor 1 can be connected with the transmission structure 3, and the part of the output half-shaft 2 located in the electric drive housing 4 can also be connected with the transmission structure 3, so that the drive motor 1 can transmit power to the transmission structure 3, so as to transmit the power to the output half-shaft 2 through the transmission structure 3, and then output the power to the wheels outside the electric drive housing 4 through the output half-shaft 2, so as to ensure the reliability of vehicle operation.

[0045] In this way, the drive motor 1, the transmission structure 3 and the output half shaft 2 can all be arranged in the same electric drive housing 4 to reduce the number of housings, reduce the installation cost, improve the integration and compactness of the electric drive assembly 100, and then improve the vehicle's lightweight and endurance performance, so as to improve the user experience.

[0046] Among them, the transmission structure 3 can be set as a gear set or a planetary gear mechanism, etc., which can be replaced according to actual needs to improve the setting flexibility.

[0047] In some embodiments, the transmission structure 3 includes a differential 31 and a transmission shaft 32 , the drive motor 1 is provided with a motor shaft 11 , the motor shaft 11 is dynamically connected to the differential 31 via the transmission shaft 32 , and the differential 31 is dynamically connected to the output half shaft 2 .

[0048] Specifically, the transmission structure 3 is arranged in the electric drive housing 4 to transmit the power of the drive motor 1 to the output half shaft 2. The transmission structure 3 can be provided with a differential 31 and a transmission shaft 32. The differential 31 is arranged in the electric drive assembly 100, so that the rotation speeds of the wheels of the vehicle can be asynchronous, so that when the vehicle turns or drives on an uneven road, the vehicles can roll at different speeds, thereby ensuring that each wheel can perform pure rolling motion during operation, so as to ensure the stability of the vehicle operation, improve the user comfort, and thus ensure the user experience.

[0049] Furthermore, the drive motor 1 is provided with a motor shaft 11, and the motor shaft 11 can be connected to the transmission shaft 32 by power, so that when the drive motor 1 is running, the power can be transmitted to the transmission shaft 32 through the motor shaft 11, and the differential 31 can be connected to the transmission shaft 32 by power, so that the motor shaft 11 can transmit power to the differential 31 through the transmission shaft 32, and the differential 31 is connected to the output half shaft 2 by power, so that the differential 31 can transmit power to the output half shaft 2 to ensure the reliability of power transmission.

[0050] In this way, the power of the motor shaft 11 is transmitted through the transmission shaft 32, which can change the power transmission path, thereby shortening the length of the power transmission path in the same direction, avoiding the electric drive assembly 100 from being too long in the same direction, thereby reducing the volume of the electric drive assembly 100 and the space occupied by the electric drive assembly 100, thereby improving the compactness of the vehicle and increasing the lightweight of the vehicle.

[0051] In some embodiments, the axis of the motor shaft 11 , the axis of the transmission shaft 32 , and the axis of the output half shaft 2 are arranged in parallel.

[0052] Specifically, the drive motor 1, the transmission shaft 32 and the output half shaft 2 are all arranged in the electric drive housing 4. The drive motor 1 can transmit power to the transmission shaft 32 through the motor shaft 11, so as to transmit power to the differential 31 through the transmission shaft 32, and then to the output half shaft 2, and as Figure 1 As shown, the axis of the motor shaft 11, the axis of the transmission shaft 32 and the axis of the output half shaft 2 are arranged in parallel, that is, the motor shaft 11, the transmission shaft 32 and the output half shaft 2 are all extended in the same direction.

[0053] In this way, the compactness between the motor shaft 11, the transmission shaft 32 and the output half shaft 2 can be improved, so that the motor shaft 11, the transmission shaft 32 and the output half shaft 2 are staggered, thereby reducing the space occupied by the motor shaft 11, the transmission shaft 32 and the output half shaft 2 in the same direction, and shortening the length of the power transmission path to improve the power transmission efficiency and ensure the operating stability of the electric drive assembly 100.

[0054] At the same time, the structure of the electric drive assembly 100 is simplified, the number of parts of the electric drive assembly 100 is reduced, the installation cost is low, and it is easy to manufacture and maintain. The torque of the output half shaft 2 is stabilized, and the speed range of the output half shaft 2 can be increased, so that the electric drive assembly 100 can meet the requirements under different working conditions and improve the reliability of use.

[0055] In some embodiments, in the axial projection along the motor shaft 11 , the axis of the motor shaft 11 , the axis of the transmission shaft 32 , and the axis of the output half shaft 2 are distributed in a triangle.

[0056] Specifically, the motor shaft 11 can transmit power to the transmission shaft 32, and the transmission shaft 32 can transmit power to the output half shaft 2 through the differential 31. Figure 1-Figure 3 As shown, in the axial projection along the motor shaft 11, the motor shaft 11, the transmission shaft 32 and the output half shaft 2 are arranged in parallel, and the axis of the motor shaft 11, the axis of the transmission shaft 32 and the axis of the output half shaft 2 are distributed in a triangular shape, that is, the motor shaft 11 and the transmission shaft 32 are distributed in parallel and spaced apart, the motor shaft 11 and the transmission shaft 32 can be connected to each other through gears or other power, the transmission shaft 32 and the output half shaft 2 are distributed in parallel and spaced apart, and the transmission shaft 32 and the output half shaft 2 are connected to each other through the differential 31.

[0057] In this way, the axis of the motor shaft 11, the axis of the transmission shaft 32 and the axis of the output half shaft 2 are arranged to be distributed in a triangle. The triangle has stability, thereby ensuring the reliability of power transmission between the motor shaft 11, the transmission shaft 32 and the output half shaft 2, ensuring the stability between the internal structures of the electric drive assembly 100, so as to ensure the operational reliability of the electric drive assembly 100, and changing the direction of power transmission, thereby improving the compactness of the electric drive assembly 100 and reducing the space occupied by the electric drive assembly 100.

[0058] In some embodiments, the differential 31 is coaxially distributed with the output half shaft 2 , and the differential 31 is connected to an end of the output half shaft 2 .

[0059] Specifically, the transmission shaft 32 can transmit power to the output half shaft 2 through the differential 31, and as Figure 1 and Figure 3 As shown, the differential 31 can be coaxially distributed with the output half shaft 2, and the differential 31 is connected to the end of the output half shaft 2. The differential 31 is arranged in the electric drive housing 4, and the end of the output half shaft 2 extending into the electric drive housing 4 is fixedly connected to the differential 31, so that when the differential 31 is running, it can drive the output half shaft 2 to rotate, so that the end of the output half shaft 2 extending outside the electric drive housing 4 can drive the wheel to rotate.

[0060] Furthermore, if Figure 4As shown, the output half shaft 2 can be provided with a non-matching shaft section 21, a bearing matching shaft section 22 and a spline matching shaft section 23 which are connected in sequence. When the end of the output half shaft 2 is connected to the differential 31, the non-matching shaft section 21 is arranged at the end of the output half shaft 2 away from the differential 31, and the spline matching shaft section 23 is arranged close to the differential 31. The outer peripheral wall of the spline matching shaft section 23 is provided with splines, and the inner peripheral wall of the differential 31 can also be provided with corresponding matching splines, so that when the spline matching shaft section 23 of the output half shaft 2 extends into the differential 31, the splines can be matched with the matching splines in the circumferential upper limit position, so that when the differential 31 rotates, the output half shaft 2 can be driven to rotate. The structure is simple, the setting cost is low, and the number of other components can be reduced. The bearing matching shaft section 22 can cooperate with the bearing to support the output half shaft 2 to ensure the reliability of the output half shaft 2.

[0061] In this way, part of the output half-shaft 2 can extend into the differential 31, thereby shortening the axial length of the output half-shaft 2 and the differential 31 along the output half-shaft 2, thereby improving the structural compactness of the electric drive assembly 100, and making the output half-shaft 2 and the differential 31 detachable, thereby improving the convenience of installation and maintenance.

[0062] In addition, in actual setting, the end of the output half shaft 2 can be connected to the differential 31 by welding or other methods, so as to improve the setting flexibility, facilitate manufacturing, and reduce manufacturing costs.

[0063] In some embodiments, the motor shaft 11 extends in a first direction relative to the drive motor 1 , and the output half shaft 2 extends in a second direction relative to the differential 31 , and the first direction is parallel to and opposite to the second direction.

[0064] Specifically, the driving motor 1 is provided with a motor shaft 11, such as Figure 1 As shown, the motor shaft 11 extends out of the drive motor 1 and extends in a first direction relative to the drive motor 1, that is, the motor shaft 11 extends in a direction away from the drive motor 1, and the end of the output half shaft 2 is coaxially connected to the differential 31, and as shown Figure 1 As shown, the output half-shaft 2 is extended in the second direction relative to the differential 31, that is, the output half-shaft 2 is extended in the direction away from the differential 31, and the first direction and the second direction are set to be parallel and opposite, that is, the motor shaft 11 and the output half-shaft 2 are set in parallel and extend in opposite directions, so that the motor shaft 11 and the output half-shaft 2 can be staggered in space.

[0065] In this way, the power output by the motor shaft 11 can be transmitted to the differential 31 through the transmission shaft 32, and during the transmission process, the transmission direction of the power can be changed from the first direction to the second direction, so that the direction of the power changes during the transmission process, avoiding the power being transmitted in a straight line in the same direction, causing the size of the electric drive assembly 100 to be too large in the same direction, and ensuring the compactness of the electric drive assembly 100.

[0066] In some embodiments, at least a portion of the output half shaft 2 is located radially outside the drive motor 1 , and a distance between the output half shaft 2 and the drive motor 1 is set to a, and satisfies: a>3 mm.

[0067] Specifically, the end of the output half shaft 2 is fixedly connected to the differential 31 and extends in a direction away from the differential 31, such as Figure 1 As shown, the output half shaft 2 can extend to the outer side of the drive motor 1 in the radial direction, that is, at least part of the output half shaft 2 is located radially outside the drive motor 1, thereby improving the compactness of the output half shaft 2 and the drive motor 1, so as to improve the utilization rate of the internal space of the electric drive housing 4, and the distance between the outer peripheral wall of the output half shaft 2 and the outer peripheral wall of the drive motor 1 is set to a, and satisfies: a>1mm, that is, the distance a between the outer peripheral wall of the output half shaft 2 and the outer peripheral wall of the drive motor 1 can be set to 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm or 4mm, etc.

[0068] The distance between the outer peripheral wall of the output half-shaft 2 and the outer peripheral wall of the drive motor 1 is set too small, that is, the output half-shaft 2 is set too close to the drive motor 1, so that after the drive motor 1 and the output half-shaft 2 are slightly deformed, contact will occur between the drive motor 1 and the output half-shaft 2, thereby affecting the rotation of the output half-shaft 2. In this way, the distance a between the outer peripheral wall of the output half-shaft 2 and the outer peripheral wall of the drive motor 1 is set to satisfy: a>3mm, which can ensure the operational reliability of the output half-shaft 2 and the drive motor 1, and the structural compactness between the drive motor 1 and the output half-shaft 2 can be ensured.

[0069] Preferably, in actual setting, the distance a between the outer peripheral wall of the output half shaft 2 and the outer peripheral wall of the drive motor 1 can be set to satisfy: a>5mm.

[0070] In actual settings, the size of the drive motor 1 can be determined according to the required model of the drive motor 1, that is, the maximum value of the distance between the drive motor 1 and the output half shaft 2 also needs to be determined according to actual conditions.

[0071] In some embodiments, at least a portion of the output half shaft 2 is provided with a thermal insulation coating 211 .

[0072] Specifically, one end of the output half shaft 2 is connected to the differential 31, and the other end is extended in a direction away from the differential 31, that is, the non-matching shaft section 21 of the output half shaft 2 is arranged away from the differential 31, and the motor shaft 11 of the drive motor 1 is extended in a direction away from the drive motor 1, so that the non-matching shaft section 21 of the output half shaft 2 can be located on the radial outside of the drive motor 1. When the drive motor 1 is running, its surface temperature is relatively high. A thermal insulation coating 211 is provided on at least part of the outside of the output half shaft 2, that is, the thermal insulation coating 211 can be provided on the entire surface of the output half shaft 2, or the thermal insulation coating 211 can be provided only on the outer peripheral wall of the non-matching shaft section 21 of the output half shaft 2, so as to avoid the high temperature generated by the drive motor 1 affecting the operating reliability of the output half shaft 2, thereby extending the service life of the output half shaft 2.

[0073] In addition, in actual setting, the output half shaft 2 can be made of high temperature resistant material as a whole, and the setting method is flexible.

[0074] In some embodiments, a driving gear 12 is disposed on the outer peripheral wall of the motor shaft 11 , and a first transmission gear 321 is disposed on the transmission shaft 32 . The driving gear 12 is meshed with the first transmission gear 321 for transmission.

[0075] Specifically, the motor shaft 11 can be connected to the transmission shaft 32 in a dynamic manner. Figure 1 As shown, a driving gear 12 is provided on the outer peripheral wall of the motor shaft 11 away from the driving motor 1. The driving gear 12 can be directly formed on the outer peripheral wall of the motor shaft 11, which can reduce the number of parts and reduce the installation cost. The driving gear 12 provided on the outer peripheral wall of the motor shaft 11 can be recessed toward the inside of the motor shaft 11 to form the tooth shape of the driving gear 12, thereby shortening the radial size of the driving gear 12 and improving the compactness of the internal structure of the electric drive assembly 100.

[0076] The transmission shaft 32 is provided with a first transmission gear 321, and the driving gear 12 can be meshed with the first transmission gear 321 for transmission, so that the motor shaft 11 can drive the first transmission gear 321 to rotate through the driving gear 12 to rotate the transmission shaft 32. The gear ratio of the driving gear 12 and the first transmission gear 321 can be set to be different, and then the first transmission gear 321 with different numbers of teeth can be set according to the required power to meet different speed ratio requirements.

[0077] Furthermore, the transmission shaft 32 is provided with a second transmission gear 322 , and the differential 31 is provided with a differential gear 311 outside, and the second transmission gear 322 is meshed with the differential gear 311 for transmission.

[0078] Specifically, Figure 1As shown, the transmission shaft 32 may also be provided with a second transmission gear 322, that is, the first transmission gear 321 and the second transmission gear 322 are coaxially arranged, and the motor shaft 11 can drive the first transmission gear 321 to rotate through the driving gear 12, so that the transmission shaft 32 rotates, and then the second transmission gear 322 can rotate together, and a differential gear 311 is also provided outside the differential 31, and the differential gear 311 can be fixedly connected to the outer peripheral wall of the differential 31, that is, when the differential gear 311 rotates, it can drive the differential 31 to rotate.

[0079] Furthermore, the second transmission gear 322 is meshed with the differential gear 311 for transmission, so that when the second transmission gear 322 rotates, the differential gear 311 can be driven to rotate, thereby driving the differential 31 to rotate. The differential 31 is coaxially arranged with the output half shaft 2, so that the output half shaft 2 can rotate together. The tooth ratio of the first transmission gear 321 and the second transmission gear 322 can be set to be different, and the first transmission gear 321 and the second transmission gear 322 with different numbers of teeth can be set according to the required power to meet different speed ratio requirements, and the transmission direction of power during the transmission process also changes, thereby avoiding the electric drive assembly 100 from being too large in the same direction, thereby improving the structural compactness and lightweight of the electric drive assembly 100.

[0080] The utility model also provides a vehicle.

[0081] A vehicle according to an embodiment of the present invention includes any one of the above-mentioned electric drive assemblies 100 .

[0082] According to the vehicle of the embodiment of the utility model, an electric drive assembly 100 is provided, and the electric drive assembly 100 can simplify the overall structure of the electric drive assembly 100 by integrating the drive motor 1 and the output half shaft 2 into the electric drive housing 4, thereby improving the integration and compactness of the electric drive assembly 100, thereby reducing the space occupied by the electric drive assembly 100, and reducing the overall weight of the electric drive assembly 100, thereby improving the lightweight of the entire vehicle, thereby improving the vehicle's endurance performance, and the electric drive housing 4 is a separate housing, which can reduce the manufacturing difficulty and manufacturing cost of the electric drive housing 4, and has a better use effect and a wider range of applications.

[0083] 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 utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0084] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 drive assembly, characterized in that: include: Electric drive housing (4); A drive motor (1) and an output half shaft (2), wherein the drive motor (1) is mounted in the electric drive housing (4), and a portion of the output half shaft (2) is located in the electric drive housing (4) and is power-connected to the drive motor (1).

2. The electric drive assembly according to claim 1, characterized in that: It also comprises a transmission structure (3), the transmission structure (3) being located in the electric drive housing (4) and being used for connecting the drive motor (1) to the output half shaft (2) by power.

3. The electric drive assembly according to claim 2, characterized in that: The transmission structure (3) comprises a differential (31) and a transmission shaft (32); the drive motor (1) is provided with a motor shaft (11); the motor shaft (11) is power-connected to the differential (31) via the transmission shaft (32); and the differential (31) is power-connected to the output half shaft (2).

4. The electric drive assembly according to claim 3, characterized in that: The axis of the motor shaft (11), the axis of the transmission shaft (32) and the axis of the output half shaft (2) are arranged in parallel.

5. The electric drive assembly according to claim 4, characterized in that: In an axial projection along the motor shaft (11), the axis of the motor shaft (11), the axis of the transmission shaft (32) and the axis of the output half shaft (2) are distributed in a triangle.

6. The electric drive assembly according to claim 3, characterized in that: The differential (31) is coaxially distributed with the output half shaft (2), and the differential (31) is connected to the end of the output half shaft (2).

7. The electric drive assembly according to claim 6, characterized in that: The motor shaft (11) extends in a first direction relative to the drive motor (1), and the output half shaft (2) extends in a second direction relative to the differential (31), the first direction being parallel to and opposite to the second direction.

8. The electric drive assembly according to claim 7, characterized in that: At least part of the output half shaft (2) is located radially outside the drive motor (1), and the distance between the output half shaft (2) and the drive motor (1) is set to a, and satisfies: a>3 mm.

9. The electric drive assembly according to claim 8, characterized in that: At least part of the output half shaft (2) is provided with a heat insulation coating (211).

10. The electric drive assembly according to claim 3, characterized in that: The outer peripheral wall of the motor shaft (11) is provided with a driving gear (12), the transmission shaft (32) is provided with a first transmission gear (321), and the driving gear (12) and the first transmission gear (321) are meshed for transmission; Furthermore, the transmission shaft (32) is provided with a second transmission gear (322), the differential (31) is externally provided with a differential gear (311), and the second transmission gear (322) is meshed with the differential gear (311) for transmission.

11. A vehicle, characterized in that: Comprising the electric drive assembly (100) according to any one of claims 1 to 10.

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