Electric assembly and vehicle with same

Abstract

The invention discloses an electric assembly and a vehicle with the same. The electric assembly comprises a box body assembly, a motor assembly and a motor assembly, the motor is arranged in the box body assembly; the transmission is arranged in the box body assembly, and the transmission is in power coupling connection with the motor; and the controller is arranged outside the box body assembly and is fixedly connected with the box body assembly. The electric assembly has the advantages of being compact in structure, high in applicability and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle manufacturing, and in particular, to an electric assembly and a vehicle with the same. BACKGROUND

[0002] In the related art, a vehicle adopts a separately arranged motor assembly, a transmission assembly and a controller assembly. The motor assembly and the transmission assembly are connected through bolts, and the controller assembly is connected with the motor assembly through a three-phase line mode. The box wall thicknesses of the connection positions are large and the space is wasted. The components are many and heavy, the loss is high, the space occupied by each assembly is large, the structure is not compact, the installation and maintenance are difficult, the cost is relatively high, the overall quality is large, and the vehicle endurance is affected. SUMMARY

[0003] The present application aims to at least solve one of the problems in the prior art. To this end, the present application provides an electric assembly, which has the advantages of compact structure and strong applicability.

[0004] The present application also provides a vehicle with the electric assembly.

[0005] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the present application, an electric assembly is provided, which comprises: a box assembly; a motor arranged in the box assembly; a transmission arranged in the box assembly, the transmission being power-coupled with the motor; and a controller arranged outside the box assembly and fixedly connected with the box assembly.

[0006] According to the electric assembly of the embodiment of the present application, the electric assembly has the advantages of compact structure and strong applicability.

[0007] In addition, the electric assembly according to the above-mentioned embodiment of the present application can also have the following additional technical features:

[0008] According to an embodiment of the present application, the electric assembly further comprises an electrically conductive sheet for connecting the controller and the motor.

[0009] According to another embodiment of the present application, the electric assembly further comprises an electrically conductive sheet, which is clamped on the controller or fixed to the controller through bolts.

[0010] According to another embodiment of the present application, the controller is located above the box assembly. According to an embodiment of the present application, the ratio of the height to the width of the electric assembly ranges from 0.6 to 0.9.

[0011] According to one embodiment of the present application, the upper surface of the box assembly is in contact with the lower surface of the controller, and the lower surface of the controller is fixed on the box assembly by bolts.

[0012] According to another embodiment of the present application, the transmission and the motor jointly define a corner space, the half shaft of the transmission extends to the corner space, and the controller is installed above the half shaft. This makes the electric assembly compact. According to one embodiment of the present application, the half shaft end is provided with a ball cage, the controller is located above the ball cage, and the controller is not in contact with the ball cage.

[0013] According to another embodiment of the present application, the controller and the motor are installed on the same side or both sides of the transmission, respectively.

[0014] According to one embodiment of the present application, the box assembly is provided with a mounting plate, the mounting plate divides the space in the box assembly into a motor accommodating cavity and a transmission accommodating cavity arranged along the axial direction of the motor shaft, the mounting plate is provided with an axial through hole communicating the motor accommodating cavity and the transmission accommodating cavity, and the motor and the transmission are power-coupled.

[0015] According to one embodiment of the present application, the controller has a shell, the shell includes a cover plate and a base, the cover plate and the base jointly define a cavity, and the surface of the cover plate is provided with a protrusion.

[0016] According to one embodiment of the present application, the protrusion is located at the center of the cover plate.

[0017] According to one embodiment of the present application, the surface of the cover plate is provided with a plurality of cover plate reinforcing ribs, each of the cover plate reinforcing ribs extends to the periphery of the cover plate along the center of the protrusion.

[0018] According to one embodiment of the present application, the centers of the opposite two side edges of the protrusion are provided with bosses.

[0019] According to one embodiment of the present application, each of the bosses is provided with a plurality of boss reinforcing ribs, each of the boss reinforcing ribs extends to the periphery of the cover plate along the center of the boss.

[0020] According to one embodiment of the present application, the side of the mounting plate facing the motor is provided with a rib.

[0021] According to one embodiment of the present application, the rib divides the space between the mounting plate and the motor into a plurality of cavities.

[0022] According to one embodiment of the present application, the maximum distance between the motor and the mounting plate is less than a preset distance.

[0023] According to one embodiment of the present application, the ribs comprise annular ribs extending in the circumferential direction of the motor.

[0024] According to one embodiment of the present application, the ribs comprise strip-shaped ribs extending in the radial direction of the motor, and the ribs are multiple and are arranged at intervals in the circumferential direction of the mounting plate.

[0025] According to one embodiment of the present application, the height of the ribs from the mounting plate gradually decreases from the inside to the outside.

[0026] According to one embodiment of the present application, the housing assembly comprises a transmission housing and a motor housing, the transmission housing comprises a front housing and a rear housing, the motor housing comprises a motor shell and a motor rear end cover, the front housing and the motor shell are arranged adjacent to each other, and the mounting plate is configured as a part of the front housing or a part of the motor shell.

[0027] According to one embodiment of the present application, the front housing and the motor shell are integrally formed or detachably connected.

[0028] According to one embodiment of the present application, the housing assembly comprises a transmission housing and a motor housing, the transmission housing comprises a front housing and a rear housing, the motor housing comprises a motor front end cover, a motor shell and a motor rear end cover, and the mounting plate is configured as a part of the front housing or a part of the motor front end cover.

[0029] According to one embodiment of the present application, the motor shell, the motor front end cover and the front housing are integrally formed or two of the motor shell, the motor front end cover and the front housing are detachably connected.

[0030] According to one embodiment of the present application, the motor front end cover and the front housing are integrally formed, and the motor shell and the motor front end cover are detachably connected.

[0031] According to one embodiment of the present application, the motor front end cover and the motor shell are integrally formed, and the motor front end cover and the front housing are detachably connected.

[0032] According to one embodiment of the present application, one or more of a first connecting rib, a second connecting rib and a third connecting rib are connected between the outer surface of the front housing and the outer surface of the motor shell, the first connecting rib is connected between the upper end surface of the motor shell and the front housing, the second connecting rib is connected between the lower end surface of the motor shell and the front housing, and the third connecting rib is located between the first connecting rib and the second connecting rib.

[0033] According to one embodiment of the present invention, the transmission includes a main shaft, the main shaft being dynamically coupled to the motor shaft of the motor, at least one of the motor shaft and the main shaft being connected to the other through the shaft through hole, and the main shaft being connected to the motor shaft of the motor via a spline.

[0034] According to one embodiment of the present invention, the main shaft is provided with a shaft hole, the inner circumferential surface of the shaft hole is provided with an internal spline, the outer circumferential surface of the motor shaft is provided with an external spline, the motor shaft of the motor is fitted into the shaft hole and the internal spline and the external spline cooperate with each other.

[0035] According to one embodiment of the present invention, the shaft hole extends through the main shaft along the axial direction of the main shaft, and an oil baffle plate is fitted inside the shaft hole. The oil baffle plate, the inner peripheral wall of the shaft hole, and the motor shaft together define an oil storage cavity, which is filled with lubricating oil. The oil baffle plate is provided with a vent hole.

[0036] According to one embodiment of the present invention, a sealing ring is fitted between the oil baffle and the shaft hole, and between the outer peripheral surface of the motor shaft and the inner peripheral surface of the shaft hole.

[0037] According to one embodiment of the present invention, the outer surface of the motor housing is provided with reinforcing ribs arranged along the outer surface of the motor housing.

[0038] According to an embodiment of a second aspect of the present invention, a vehicle is provided, the vehicle comprising the electric powertrain described in an embodiment of a first aspect of the present invention.

[0039] The vehicle according to an embodiment of the present invention, by utilizing the electric powertrain described in the first aspect of the present invention, has advantages such as compact structure and strong applicability.

[0040] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0041] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0042] Figure 1 This is a schematic diagram of the structure of an electric powertrain according to an embodiment of the present invention.

[0043] Figure 2 This is an exploded view of an electric powertrain according to an embodiment of the present invention.

[0044] Figure 3 This is a partial cross-sectional view of an electric powertrain according to an embodiment of the present invention.

[0045] Figure 4 This is an exploded view of an electric powertrain according to an embodiment of the present invention.

[0046] Figure 5 This is a partial structural schematic diagram of an electric powertrain according to an embodiment of the present invention.

[0047] Figure 6 This is a partial structural schematic diagram of an electric powertrain according to an embodiment of the present invention.

[0048] Figure 7 This is a partial structural schematic diagram of an electric powertrain according to an embodiment of the present invention.

[0049] Figure 8 This is a partial cross-sectional view of an electric powertrain according to an embodiment of the present invention.

[0050] Figure 9 This is a partial cross-sectional view of an electric powertrain according to another embodiment of the present invention.

[0051] Figure 10 This is a schematic diagram of the electric powertrain according to another embodiment of the present invention.

[0052] Figure 11 This is a schematic diagram of the electric powertrain according to another embodiment of the present invention.

[0053] Figure 12 This is a schematic diagram of the electric powertrain according to another embodiment of the present invention.

[0054] Figure 13 This is a schematic diagram of the electric powertrain according to another embodiment of the present invention.

[0055] Figure 14 This is a partial structural schematic diagram of an electric powertrain according to another embodiment of the present invention.

[0056] Figure 15 This is a partial structural schematic diagram of an electric powertrain according to another embodiment of the present invention.

[0057] Figure 16 This is a partial structural schematic diagram of an electric powertrain according to another embodiment of the present invention.

[0058] Figure 17 This is a partial structural schematic diagram of an electric powertrain according to another embodiment of the present invention.

[0059] Figure 18 yes Figure 16 Enlarged view of point A in the middle.

[0060] Figure 19 This is an exploded view of an electric powertrain according to another embodiment of the present invention.

[0061] Figure 20 This is a cross-sectional view of an electric powertrain according to another embodiment of the present invention.

[0062] Figure 21 This is a schematic diagram of the connector location of the cooling water circuit of an electric powertrain according to another embodiment of the present invention.

[0063] Figure 22 This is a schematic diagram of the electric powertrain according to an embodiment of the present invention.

[0064] Figure 23 This is a partial cross-sectional view of an electric powertrain according to an embodiment of the present invention.

[0065] Figure 24 yes Figure 22 Enlarged view of point D in the middle.

[0066] Figure 25 This is an exploded view of the electric powertrain according to an embodiment of the present invention.

[0067] Figure 26 This is an exploded view of the housing assembly of the electric powertrain according to an embodiment of the present invention.

[0068] Figure 27 This is a schematic diagram of the electric powertrain according to an embodiment of the present invention.

[0069] Figure 28 This is a schematic diagram of the electric powertrain according to an embodiment of the present invention.

[0070] Figure 29 This is a schematic diagram of the housing of the electric power assembly according to an embodiment of the present invention.

[0071] Figure 30 This is a partial structural schematic diagram of an electric powertrain according to another embodiment of the present invention.

[0072] Figure 31 This is a partial structural schematic diagram of an electric powertrain according to another embodiment of the present invention.

[0073] Reference numerals: Electric assembly 1, Housing assembly 100, Gearbox housing 101, Motor housing 102, Motor section 110, Gear shift section 120, Shaft through hole 130, Water cooling outlet 140, Motor rear end cover 150, Mounting plate 160, Motor water inlet 170, Motor 200, Motor shaft 210, Main shaft 300, Shaft hole 310, Oil baffle 320, Oil reservoir 330, Sealing ring 340, Vent hole 350, Gearbox 400, First gear 410, Second gear 420, Third gear 4 30. Differential assembly 440, drive shaft 450, controller 500, horizontal side 510, vertical side 520, water-cooled inlet 530, controller outlet 540, DC bus 550, housing 560, cover plate 561, base 562, protrusion 563, cover plate reinforcing rib 564, boss 565, boss reinforcing rib 566, sealing cavity 600, cavity body 610, cavity cover plate 620, water-cooled connecting pipe 700, bearing 800, first bearing 810, second bearing 820, third bearing 830, Fourth Bearing; 840, Bend Space; 40, Motor Body; 203, Lead Wire; 2031, Wiring Device; 204, Support Plate; 205, Positioning Insert; 206, Conductive Sheet; 20, Conductive Component; 10, Connector; 2211, Motor Terminal; 2212, First Cooling Channel; 11, First Interface; 111, Second Interface; 112, Second Cooling Channel; 21, Third Interface; 211, Fourth Interface; 212, First Sealing Structure; 31, Motor Water Inlet Connector; 32, Controller Water Outlet Connector; Cooling Water It consists of a controller water inlet connector 33, a motor water outlet connector 14, a motor housing 103, a gearbox housing 104, a motor housing 105, a reinforcing rib 141, a front housing 180, a first connecting rib 181, a second connecting rib 182, a third connecting rib 183, a rear housing 190, a motor front end cover 106, an inner lining 151, a first protrusion 152, an inner lining water channel 153, a second protrusion 154, a rib 161, a cavity 162, an annular rib 163, an external spline 211, and an internal spline 311. Detailed Implementation

[0074] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0075] The electric powertrain 1 according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0076] like Figures 1-31 As shown, the electric power assembly 1 according to an embodiment of the present invention includes a housing assembly 100, a motor 200, a transmission 400, and a controller 500.

[0077] The motor 200 is located inside the housing assembly 100. The gearbox 400 is located inside the housing assembly 100, and the gearbox 100 is poweredly coupled to the motor 200. The controller 500 is located outside the housing assembly 100 and is fixedly connected to the housing assembly 100.

[0078] According to the embodiment of the present invention, the electric power assembly 1 integrates the motor 200, the transmission 400, and the controller 500 by placing the motor 200 and the transmission 400 inside the housing assembly 100 and mounting the controller 500 outside the housing assembly 100 and fixing it to the housing assembly 100. Compared with the power assemblies in related technologies, the motor 200 and the transmission 400 share a single housing assembly 100, achieving an integrated design of the electric power assembly 1. This not only eliminates the need for multiple housing assemblies 100 structures but also eliminates the need for connection structures such as bolts between the motor assembly and the transmission assembly, simplifying the structure of the electric power assembly 1, reducing the number of parts in the electric power assembly 1, increasing the integration of the electric power assembly 1, and reducing the weight of the electric power assembly 1. In addition, the integrated design facilitates installation and disassembly, improving the production efficiency of the electric power assembly 1.

[0079] Furthermore, the integrated design of the motor 200, transmission 400, and controller 500 avoids the waste of space associated with separate motor, transmission, and controller assemblies compared to powertrains in related technologies. This facilitates a reduction in the axial distance of the electric powertrain 1, resulting in a more compact and rational structure, improved space utilization, and easier installation. It also facilitates the installation and maintenance of the electric powertrain 1, expands its applicability, and enhances its reliability and stability.

[0080] Furthermore, by sharing a single housing assembly 100 for the motor 200 and the transmission 400, the weight of the electric power assembly 1 can be reduced. For example, when the electric power assembly 1 is applied in a vehicle, the overall weight of the vehicle can be reduced, which can help reduce the cost of the vehicle, reduce the energy consumption of the vehicle, improve the working efficiency of the vehicle, and improve the range of the vehicle.

[0081] Furthermore, the motor 200 and the transmission 400 are connected by a power coupling, facilitating direct transmission between them. This eliminates the need for additional transmission structures, further simplifying the structure of the electric power assembly 1 and increasing its integration. Simultaneously, it facilitates the timely transmission of power from the motor 200 to the transmission 400, improving the transmission efficiency of the electric power assembly 1 and enhancing the timeliness and accuracy of its power transmission.

[0082] Meanwhile, the controller 500 is installed on the housing assembly 100. The motor 200, gearbox 400 and controller 500 have a high degree of integration. Compared with the motor assembly in related technologies, it can eliminate the need to set an external three-phase line between the controller 500 and the motor 200. This facilitates the optimization of the structure of the electric assembly 1, reduces the cost of the electric assembly 1, avoids the impact of installing an external three-phase line on the sealing effect of the electric assembly 1, prevents leakage of the electric assembly 1, facilitates the improvement of the working efficiency of the electric assembly 1, improves the anti-interference ability of the electric assembly 1, and reduces the failure rate of the electric assembly 1.

[0083] Therefore, the electric power assembly 1 according to the embodiments of the present invention has advantages such as compact structure and strong applicability.

[0084] The electric powertrain 1 according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0085] In some specific embodiments of the present invention, such as Figures 1-31 As shown, the electric power assembly 1 according to an embodiment of the present invention includes a housing assembly 100, a motor 200, a transmission 400, and a controller 500.

[0086] According to one embodiment of the present invention, the controller 500 is directly electrically connected to the motor 200. This simplifies the structure of the electric power assembly 1 and improves the integration level of the electric power assembly 1.

[0087] According to another embodiment of the invention, such as Figure 9 As shown, the controller 500 is located above the housing assembly (vertically as shown). Figure 10 (As shown by arrow A in the diagram). This facilitates the setup of the controller 500.

[0088] Specifically, such as Figure 9 As shown, the controller 500 is located above the motor 200 and the gearbox 400. Specifically, the controller 500 can be located above the motor 200 or above the gearbox 400, and the motor 200 and controller 500 can be in direct contact or not. For example, the controller 500 can be installed above both the motor 200 and the gearbox 400, with the gearbox 400 located on one side of the motor 200 in the horizontal direction, or behind the motor 200, and the controller 500 located above the entire assembly formed by the gearbox 400 and the motor 200.

[0089] More specifically, the height-to-width ratio of the electric power assembly 1 ranges from 0.6 to 0.9 (the height, width, and height directions of the electric power assembly 1 are as follows: ...). Figure 11(As shown). Thus, when the height-to-width ratio of the electric power assembly 1 is at its maximum, the height of the electric power assembly 1 can be reduced, allowing for arrangement within the constraints of the overall vehicle assembly height. When the ratio is at its minimum, the lateral dimension can be reduced, allowing for arrangement where the lateral dimension of the overall vehicle assembly is required to be small.

[0090] Specifically, the rated output power of motor 200 is 70KW, the rated speed of motor 200 is 14000r / min, the speed ratio of gearbox 400 is 10.7, the height of electric assembly 1 ranges from 350mm to 370mm, the length of electric assembly 1 ranges from 410mm to 430mm, the width of electric assembly 1 ranges from 440mm to 460mm, and the height of housing assembly 100 ranges from 250mm to 270mm.

[0091] Specifically, the rated output power of motor 200 is 70KW, the rated speed of motor 200 is 14000r / min, the speed ratio of gearbox 400 is 8.5, the height range of electric assembly 1 is 350mm to 370mm, the length range of electric assembly 1 is 410mm to 430mm, the width range of electric assembly 1 is 440mm to 460mm, and the height range of housing assembly 100 is 250mm to 270mm.

[0092] More specifically, the rated output power of motor 200 is 120KW, the rated speed of motor 200 is 14000 to 15000r / min, the speed ratio of transmission 400 is 9.3, the height of electric assembly 1 ranges from 320mm to 340mm, the length of electric assembly 1 ranges from 470mm to 490mm, the width of electric assembly 1 ranges from 470mm to 490mm, and the height of housing assembly 100 ranges from 230mm to 250mm.

[0093] Optionally, the upper surface of the housing assembly 100 contacts the lower surface of the controller 500, and the lower surface of the controller 500 is fixed to the housing assembly 100 by bolts. This facilitates the installation of the controller 500 and improves the structural stability of the controller 500.

[0094] According to another embodiment of the invention, such as Figure 10As shown, the transmission 500 and the motor 200 together define a bend space 40. The half-shaft of the transmission 400 extends into the bend space 40, and the controller 500 is mounted above the half-shaft. Specifically, the motor 200 is mounted on one side of the transmission 400 in the horizontal direction. The drive shaft of the transmission 400 (not shown in the figure) is connected to the motor 200. The half-shaft of the transmission 400 is mounted on the same side of the motor 200 as the transmission 400, and the half-shaft of the transmission 400 is parallel to the axial direction of the motor 200. The bend space 40 is defined by the motor 200 and the transmission 400. The bend space 40 is located on the side of the motor 200 facing the half-shaft of the transmission 400, and also on the side of the transmission 400 facing the motor 200.

[0095] like Figure 11 In the illustrated embodiment, motor 200 is mounted on both motor 200 and transmission 400. Controller 500 is electrically connected to motor 200 and is used to control the start, stop, and speed of motor 200. The controller body is located within the angled space 40. It is understood that the controller body refers to the functional component of controller 500, i.e., the part that implements the control function, excluding mounting brackets and other components. Controller 500 is located on the same side of transmission 400 as motor 200, and also on the same side of motor 200 as half-shaft of transmission 400. The controller 500, transmission 400, and motor 200 are integrated into one unit, meaning that they form a single structural unit. It is understood that controller 500 can be mounted not only on the integrated housing assembly 100 of motor 200 and transmission 400, but also only on the housing of motor 200, or only on the housing of transmission 400.

[0096] According to an embodiment of the present invention, the electric powertrain 1 integrates the controller 500, the transmission 400, and the motor 200 into a single unit by defining an angled space 40 between the transmission 400 and the motor 200. This results in a compact structure for the electric powertrain 1. The controller 500 is mounted on the transmission 400 and the motor 200, eliminating the need for long three-phase wiring harnesses between the controller 500 and the motor 200, thus saving installation space and making the overall structure of the electric powertrain 1 simple and aesthetically pleasing. Furthermore, the reduced number of mounting points of the controller 500 on the vehicle frame simplifies the overall vehicle structure, reduces assembly processes, and lowers production and development costs. The lower center of gravity and overall height of the electric powertrain 1 reduce the installation space requirements of the vehicle, making it suitable for both front-wheel drive and rear-wheel drive vehicles. This is beneficial for the vibration reduction of the electric powertrain 1 and the overall vehicle center of gravity.

[0097] Furthermore, since the controller body is located within the angled space 40, the space of the angled space 40 can be utilized to move the controller 500 downward into the angled space 40, thereby reducing the overall height of the electric vehicle's powertrain 100.

[0098] Specifically, a ball cage is provided at the end of the half-shaft, and the controller 500 is located above the ball cage, without contacting the ball cage. Since the ball cage can transmit power under various deformations, this facilitates power transmission. The controller 500 is installed above the ball cage to prevent contact between the controller 500 and the ball cage, which could damage the controller 500 due to ball cage vibration.

[0099] According to another embodiment of the invention, such as Figure 12 and Figure 13 As shown, the controller 500 and the motor 200 are respectively installed on the same side or both sides of the gearbox 400.

[0100] like Figure 12 As shown, the motor 200 is located at the front of the transmission 400, and the controller 500 is located at the rear of the transmission 400. In this case, the motor 200 and the controller 500 can be located at the front and rear sides of the transmission 400 respectively in the horizontal direction. Of course, it can be understood that the controller 500 can also be located at the front of the transmission 400, and the motor 200 can also be located at the rear of the transmission 400.

[0101] like Figure 13 As shown, the controller 500 is mounted at the front end of the motor 200, and the motor 200 is mounted at the front side of the gearbox 400. In this configuration, both the controller 500 and the motor 200 are located at the front side of the gearbox 400. Figure 6 As shown, the controller 500 can also be installed on the right side of the motor 200, and the motor 200 can be installed on the front side of the gearbox 400. In this case, both the controller 500 and the motor 200 are located on the front side of the gearbox 400. Of course, it can be understood that both the controller 500 and the motor 200 can also be located on the rear side of the gearbox 400.

[0102] According to another embodiment of the invention, such as Figure 14 As shown, the electric assembly 1 also includes a conductive plate 20, which is used to connect the controller 500 and the motor 200. For example, the conductive plate 20 has a controller terminal and a motor terminal. The controller terminal is used to connect to the controller 500, for example, to connect the three-phase wires of the controller 500, and the motor terminal is used to connect to the motor 200, for example, to connect the three-phase wires of the motor 200. The conductive plate 20 is fixed to the controller 500 by bolts. This eliminates the need for external three-phase wires and terminal blocks, reduces the length of the three-phase wires, eliminates the need for a terminal block structure, and lowers costs.

[0103] Specifically, the motor 200 includes a motor body 203 and a wiring device 204. The wiring device 204 is mounted on the motor body 203. The motor body 203 has multiple leads 2031. The wiring device 204 includes multiple conductive pieces 20. The multiple conductive pieces 20 are respectively connected to the corresponding leads 2031. The conductive pieces 20 have a controller connection end, which is used to directly connect to the controller 500.

[0104] In other words, the controller 500 is directly connected to the controller connection terminal at one end of the conductive sheet 20, and the other end of the conductive sheet 20 is connected to the lead wire 2031 of the motor body 203 (the lead wire can be the lead wire of the motor winding). In this way, the controller 500 can control the motor body 203, and the connection between the motor controller 100 and the motor body 203 through the conductive sheet 20 can make the overall structure of the motor 200 more compact.

[0105] In some specific embodiments, the wiring device 204 further includes a support plate 2042, which is fixedly mounted on the motor body 203. The support plate 2042 has a positioning insert 20421, with both ends of the positioning insert 20421 extending out from opposite sides of the support plate 2042. A portion of the conductive sheet 20 is embedded in the positioning insert 20421, and the controller connection end of the conductive sheet 20 extends out from the positioning insert 20421. In other words, the support plate 2042 is fixedly mounted on the motor body 203, the positioning insert 20421 extends out from both sides of the support plate 2042, the conductive sheet 20 is embedded in the positioning insert 20421, and both ends of the conductive sheet 20 extend out from the positioning insert 20421 for connection to the lead wire 2031 and the controller connection end, respectively. The positioning insert 20421 provides support and positioning for the conductive sheet 20.

[0106] Furthermore, multiple conductive sheets 20 are arranged side by side and spaced apart from each other. It is understood that the spaced-apart conductive sheets 20 can prevent short circuits or connection problems from occurring.

[0107] In other words, the motor terminals of the conductive component 10 are connected one-to-one with the conductive sheet 20, the conductive component 10 and the conductive sheet 20 are electrically connected, and the conductive component 10 and the conductive sheet 20 are directly connected without the need for wires or other connecting devices. In this way, the wiring of the motor assembly 1 can be shortened, the anti-interference ability can be improved, and space can be greatly saved.

[0108] In one specific embodiment, the conductive element 10 and the conductive sheet 20 are connected by screws. The screw connection is a self-locking connection, which is stable and not easy to loosen, and is convenient to assemble and disassemble. Of course, the above embodiments are only illustrative and should not be construed as limiting the scope of protection of the present invention. For example, the conductive element 10 and the conductive sheet 20 can be connected by plugging, snapping, welding or riveting, etc.

[0109] According to another embodiment of the invention, such as Figure 17 As shown, the electric assembly 1 also includes a conductive plate 20, which is snapped onto the controller 500 or fixed to the controller 500 by bolts. The conductive plate 20 has a controller terminal and a motor terminal. The controller terminal is used to connect to the controller 500, for example, to connect the three-phase wires of the controller 500. The motor terminal is used to connect to the motor 200, for example, to connect the three-phase wires of the motor 200. The conductive plate 20 is snapped onto the controller 500. This facilitates the disassembly and installation of the conductive plate 20, eliminates the need for external three-phase wires and terminal blocks, reduces the length of the three-phase wires, eliminates the need for a terminal block structure, and lowers costs.

[0110] Specifically, the motor assembly 1 includes a motor 200 and a controller 500. The motor 200 includes a motor body 203 and a wiring device 204. The wiring device 204 is mounted on the motor body 203. The motor body 203 has multiple leads 2031. The wiring device 204 includes multiple conductive plates 20, each of which is connected to a corresponding lead 2031. Each conductive plate 20 has a controller connection terminal. The motor controller 100 is mounted on the motor 200. The motor controller 100 has a conductive element 10. The conductive element 10 has a power connection terminal for connecting to a power source and a motor connection terminal 2212 for directly connecting to the motor 200. One of the motor connection terminal 2212 of the conductive element 10 and the controller connection terminal of the conductive plate has a plug-in structure, and the other is plugged into the plug-in structure.

[0111] In other words, the power connection terminal of the conductive element 10 is connected to the power source, and the motor connection terminal 2212 of the conductive element 10 is connected to the controller connection terminal of the conductive sheet 20. That is, the motor controller 100 is directly connected to the controller connection terminal at one end of the conductive sheet 20, and the other end of the conductive sheet 20 is connected to the lead wire 2031 of the motor body 203 (the lead wire 2031 can be the lead wire of the motor winding). In this way, the motor controller 100 can control the motor body 203, and the connection between the motor controller 100 and the motor body 203 through the conductive sheet 20 can make the overall structure of the motor 200 more compact.

[0112] Furthermore, the motor connection terminal 2212 of the conductive component 10 is connected to the conductive sheet 20 of the motor 200 via a plug-in structure. It is understandable that compared to the method of insulated wiring, the plug-in connection method is simpler, simplifies the process, and saves time. Moreover, it can ensure the integrity of the motor conductive sheet 20 in the event of an impact, reducing the occurrence of bending or breakage of the conductive sheet 20.

[0113] In other words, the motor connection terminal 2212 of the conductive component 10 is connected to the conductive sheet 20 one by one, the conductive component 10 and the conductive sheet 20 are electrically connected, and the conductive component 10 and the conductive sheet 20 are directly connected without the need for wires or other connecting devices. In this way, the wiring of the motor assembly 1 can be shortened, the anti-interference ability can be improved, and space can be greatly saved.

[0114] In some embodiments, the conductive sheet 20 is provided with a limiting groove, and the plug-in structure is provided with a limiting protrusion, which is adapted to be fastened into the limiting groove. When the plug-in structure is connected to the conductive sheet 20, the limiting protrusion and the limiting groove cooperate, which can increase the contact area between the plug-in piece 2211 and the conductive sheet 20, and can prevent the plug-in piece 2211 from temporarily separating from the conductive sheet 20 during vibration, thus preventing poor contact.

[0115] According to another embodiment of the present invention, the controller 500 has a controller cooling water circuit and the controller 500 is provided with a controller water circuit inlet connector and a controller water circuit outlet connector respectively connected to the controller cooling water circuit, the motor 200 has a motor cooling water circuit and the motor 200 is provided with a motor water circuit inlet connector and a motor water circuit outlet connector respectively connected to the motor cooling water circuit, and the controller water circuit outlet connector and the motor water circuit inlet connector are connected by bolts.

[0116] According to the embodiment of the present invention, the electric assembly 1 directly connects the electric assembly and the motor 200, shortens the water path, eliminates the need for external rubber water pipes, and has a compact structure and high integration, thus achieving high space utilization.

[0117] Specifically, such as Figure 19 Combination Figure 20 As shown, the motor 200 has a first cooling channel 11, which has a first interface 111 and a second interface 112. The controller 500 has a second cooling channel 21, which has a third interface 211 and a fourth interface 212. The controller 500 is mounted on the motor 200. The second interface 112 is connected to the third interface 211, and a first sealing structure 31 is provided around the connection point between the second interface 112 and the third interface 211.

[0118] In other words, the cooling water channel between the motor 200 and the controller 500 is directly connected to achieve the purpose of cooling water circulation. The cooling water circulation steps are as follows: the cooling water in the water tank enters the second cooling channel 21 from the fourth interface 212 of the controller 500, cools the relevant components in the controller 500, and then flows out from the third interface 211. Since the third interface 211 is connected to the second interface 112, the water flows into the motor 200 through the second interface 112 on the motor 200, cools the relevant components in the motor 200, and then returns to the water tank from the first interface 111, realizing the cooling water circulation and completing the function of the cooling system.

[0119] Among them, such as Figure 20 As shown, the second interface 112 and the third interface 211 are directly connected without the need for intermediate pipe connections. This results in a more compact structure and higher integration of the motor 200 and controller 500, improving space utilization. It should be noted that the connection between the third interface 211 and the second interface 112 refers to a coaxial connection. In other words, after the second interface 112 and the third interface 211 are connected, they are coaxial. This ensures a stable and reasonable connection between the second interface 112 and the third interface 211, resulting in a more stable flow rate and direction of cooling water entering the first cooling channel 11 from the second cooling channel 21.

[0120] In addition, the first sealing structure 31 plays a sealing role, which can prevent the cooling water from leaking when it passes through the connection between the second interface 112 and the third interface 211, thereby preventing safety hazards.

[0121] The first sealing structure 31 is preferably a sealing ring. Sealing rings are widely available, inexpensive, and easy to install. They can be designed according to the shape of the interface and can also help balance errors. Of course, the above embodiments are only illustrative, and the first sealing structure 31 is not limited to a sealing ring. The first sealing structure 31 can also achieve the sealing effect through interference fit, hydraulic or pneumatic structures.

[0122] According to another embodiment of the invention, such as Figure 21As shown, the controller 500 has a controller cooling water circuit and is provided with a controller water circuit inlet connector and a controller water circuit outlet connector respectively connected to the controller cooling water circuit. The motor 200 has a motor cooling water circuit and is provided with a motor water circuit inlet connector and a motor water circuit outlet connector respectively connected to the motor cooling water circuit. The controller water circuit outlet connector is plugged into the motor water circuit inlet connector. Specifically, the motor water circuit inlet connector 13 can be located on the side of the motor 200 adjacent to the controller 500, and the controller water circuit outlet connector 32 can be located on the side of the controller 500 adjacent to the motor 200. Cooling water enters the internal water circuit of the controller 500 through the controller water circuit inlet connector 33, flows out through the controller water circuit outlet connector 32, enters the internal water circuit of the motor 200 through the motor water circuit inlet connector 13, and finally flows out through the motor water circuit outlet connector 14. Therefore, the motor 200 and the controller 500 share a water cooling system, eliminating the need for water pipes connecting the controller water outlet connector 32 and the motor water inlet connector 13, thereby shortening the cooling water circulation path and time, enhancing the cooling effect, and saving costs.

[0123] Specifically, the housing assembly 100 has an interconnected motor housing cavity 103 and a gearbox housing cavity 104. The motor 200 is located in the motor housing cavity 103, and the gearbox 400 is located in the gearbox housing cavity 104. This facilitates the placement of the motor 200 and the gearbox 400, further improves the space utilization of the electric assembly 1, and makes the structure of the electric assembly 1 more compact and reasonable.

[0124] More specifically, the motor housing 103 and the gearbox housing 104 are arranged axially along the motor shaft 210. The housing assembly 100 has a shaft through-hole 130 connecting the motor housing 103 and the gearbox housing 104. At least one of the motor shaft 210 and the main shaft 300 passes through the shaft through-hole 130 and is connected to the other. This facilitates the interconnection of the motor shaft 210 and the main shaft 300, facilitates the smooth transmission of power from the motor 200 to the gearbox 400, and improves the transmission reliability of the electric assembly 1.

[0125] Optionally, such as Figure 1 As shown, the electric assembly 1 also includes a sealed cavity 600, which is integrally formed on the end face of the housing assembly 100 near the motor receiving cavity 103 and communicates with the motor receiving cavity 103 and the controller 500. The motor 200 has terminals that pass through the sealed cavity 600 and are directly electrically connected to the controller 500. This facilitates direct electrical connection between the motor 200 and the controller 500 and improves the sealing performance of the electric assembly 1.

[0126] Furthermore, the controller 500 is mounted on the circumferential surface of the housing assembly 100 and supported on the sealed cavity 600. It is important to understand that the circumferential surface of the housing assembly 100 refers to the surface excluding the axial end face of the motor shaft 210. In this way, the sealed cavity 600 can support the controller 500, making the structure of the electric assembly 1 more rational and compact, saving installation space for the controller 500, and improving the space utilization rate of the electric assembly 1.

[0127] Specifically, such as Figure 4 As shown, the sealed cavity 600 includes a cavity body 610 and a cavity cover 620. The cavity body 610 is integrally formed on the housing assembly 100, and the cavity cover 620 is detachably mounted on the cavity body 610. Specifically, the cavity body 610 can be opened after the cavity cover 620 is removed. This facilitates the disassembly and installation of the sealed cavity 600, facilitates the maintenance of the structure inside the sealed cavity 600, and improves the maintenance efficiency of the electric assembly 1.

[0128] More specifically, such as Figure 4 As shown, the housing assembly 100 includes a motor section 110 and a transmission section 120. The two ends of the motor section 110 are connected to the sealed cavity 600 and the transmission section 120, respectively. The two ends of the controller 500 are supported on the transmission section 120 and the sealed cavity 600, respectively. This facilitates the arrangement of the motor 200, the transmission 400, and the controller 500, facilitates the protection of the electric assembly 1 by the housing assembly 100, and improves the structural stability of the electric assembly 1.

[0129] Furthermore, such as Figure 3 As shown, the controller 500 is generally rectangular in shape and has two parallel horizontal sides 510 and two parallel vertical sides 520 on a horizontal plane. The speed-changing section 120 and the sealed cavity 600 are respectively arranged adjacent to the two horizontal sides 510. The motor section 110 is parallel to the vertical side 520 along its axis and is adjacent to one of the two vertical sides 520, with the vertical side 520 supported on the motor section 110. Specifically, the two horizontal sides 510 of the controller 500 are respectively supported on the speed-changing section 120 and the sealed cavity 600, and one vertical side 520 of the controller 500 is supported on the motor section 110. In this way, the three sides of the controller 500 are respectively supported on the housing assembly 100 and the sealed cavity 600, which helps to improve the stability and reliability of the controller 500.

[0130] Specifically, the controller 500 is equipped with a DC bus 550, which is located adjacent to a horizontal side 510. This facilitates the implementation of the control functions of the controller 500.

[0131] Optionally, such as Figure 5 and Figure 6As shown, the electric assembly 1 also includes a water-cooled connecting pipe 700, a water-cooled inlet 530 connected to a cooling water source on the controller 500, and a water-cooled outlet 140 connected to the motor housing cavity 103 on the housing assembly 100. The controller 500 is connected to the motor housing cavity 103 via the water-cooled connecting pipe 700. Specifically, the housing assembly 100 has a motor water inlet 170 on its end face, the controller 500 has a controller water outlet 540 on its end face near the sealed cavity 600, the motor water inlet 170 is located below the sealed cavity 600, and the motor water inlet 170 and the water-cooled outlet 140 are located on the two end faces of the motor housing cavity 103, respectively. Since the motor 200 and controller 500 share a water-cooling system, cooling water enters the internal water circuit of the controller 500 through the water-cooling inlet 530, flows out from the controller outlet 540, and enters the internal water circuit of the motor 200 through the water-cooling connecting pipe 700 and the motor inlet 170. Finally, the cooling water flows out from the water-cooling outlet 140. This shortens the circulation path and time of the cooling water, improves the cooling effect, and ensures the performance of the motor 200 and controller 500. It also increases the integration of the electric assembly 1 and further simplifies its structure.

[0132] Specifically, such as Figure 23 As shown, the housing assembly 100 has a mounting plate 160 inside, which divides the space inside the housing assembly 100 into a motor receiving cavity 103 and a transmission receiving cavity 104 arranged axially along the motor shaft 210. The mounting plate 160 has a shaft through hole 130 connecting the motor receiving cavity 103 and the transmission receiving cavity 104. The motor 200 and the transmission 400 are dynamically coupled.

[0133] According to the present invention, the electric power assembly 1, by housing the motor 200 and the transmission 400 within the housing assembly 100, compared to the motor assembly in the related art where the front housing of the transmission is connected to the front end cover of the motor, allows the motor 200 and the transmission 400 to share a single housing assembly 100, thus achieving an integrated design of the electric power assembly 1. This not only eliminates the need for multiple housing assemblies 100 structures but also eliminates the need for bolts connecting the motor assembly and the transmission assembly, simplifying the structure of the electric power assembly 1, reducing the number of parts in the electric power assembly 1, improving the integration of the electric power assembly 1, and increasing the production efficiency of the electric power assembly 1.

[0134] Furthermore, the motor 200 and the transmission 400 share a single housing assembly 100. Compared to motor assemblies in related technologies, this avoids the waste of space by setting up separate motor and transmission assemblies, facilitates shortening the axial distance of the electric assembly 1, makes the structure of the electric assembly 1 more compact and reasonable, improves the space utilization of the electric assembly 1, and facilitates the installation of the electric assembly 1. At the same time, it facilitates the installation and maintenance of the electric assembly 1, and improves the reliability and stability of the electric assembly 1.

[0135] Furthermore, by sharing a single housing assembly 100 for the motor 200 and the transmission 400, the weight of the electric power assembly 1 can be reduced. For example, when the electric power assembly 1 is applied in a vehicle, the overall weight of the vehicle can be reduced, which can help reduce the cost of the vehicle, reduce the energy consumption of the vehicle, improve the working efficiency of the vehicle, and improve the range of the vehicle.

[0136] Meanwhile, by setting the housing assembly 100 with an installation plate 160 inside, the assembly process only requires one clamping, which facilitates the assembly and forming of the electric assembly 1, reduces the error of the electric assembly 1, facilitates the installation and setting of the motor 200 and the transmission 400, improves the coaxiality and radial installation accuracy of the motor 200 and the transmission 400, and improves the working performance of the electric assembly 1.

[0137] Specifically, such as Figure 27 and Figure 28 As shown, the mounting plate 160 has ribs on the side facing the motor 200. These ribs increase the rigidity of the housing assembly 100 and raise its natural frequency, thus preventing resonance in the electric assembly 1 and reducing noise.

[0138] More specifically, the ribs divide the space between the mounting plate 160 and the motor 200 into multiple cavities. This facilitates the formation of cavities 162, allowing the motor 200 to be cooled by air passing through the cavities 162.

[0139] Optionally, the maximum distance between the motor 200 and the mounting plate 160 is less than a preset distance. It should be understood that the preset distance is the maximum distance at which the mounting plate 160 cools the motor 200. For example, the maximum distance between the motor 200 and the mounting plate 160 can be less than 10 mm, preferably 7.5 mm. Since the preset value can be set to a small value to make the distance between the motor 200 and the mounting plate 160 very small, this allows the motor 200 and the mounting plate 160 to cool each other at close range, and the motor 200 can be cooled quickly after the mounting plate 160 cools down.

[0140] According to one embodiment of the invention, the mounting plate 160 is configured as part of the front housing 180. Because the transmission fluid cools the front housing 180, the mounting plate 160 and the housing assembly 100, such as the motor housing 105 and the transmission housing 101, can also be cooled. A cavity 162 is formed between the ribs of the mounting plate 160, thus the air flowing through the cavity 162 is also cooled. The air flowing through the cavity 162 allows for cooling of the motor 200, improving the heat dissipation performance of the electric power assembly 1. In summary, the lubricant within the transmission 400 can simultaneously cool both the motor housing 105 and the housing of the transmission 400.

[0141] According to another embodiment of the invention, the mounting plate 160 is constructed as part of the motor housing 105. Since the motor lubricant cools the motor housing 105, it also cools the mounting plate 160. Heat is transferred through the mounting plate 160, allowing the transmission housing 101 to also be cooled, thereby cooling the housing assembly 100 and improving the overall cooling effect of the electric power assembly 1. In summary, the lubricant within the motor 200 can simultaneously cool both the motor housing 105 and the transmission 400.

[0142] Specifically, during the rotation of the motor 200, stress is transmitted to the housing assembly 100 through the bearing. Adding the ribs to the housing assembly 100 helps to increase the rigidity and strength of the housing assembly 100, avoids contact between the housing assembly 100 and the coil of the motor 200, prevents damage to the components of the motor 200, and further improves the working reliability and stability of the motor 200.

[0143] According to one embodiment of the present invention, such as Figure 31 As shown, the ribs include annular ribs 163 extending circumferentially along the motor 200. This can improve the rigidity and strength of the housing assembly 100, improve the structural stability of the housing assembly 100, and improve the heat dissipation capacity and cooling effect of the housing assembly 100.

[0144] According to another embodiment of the invention, such as Figure 28 As shown, the ribs include strip-shaped ribs 161 extending radially along the motor 200. Multiple strip-shaped ribs 161 are arranged at circumferential intervals along the mounting plate 160. This allows for more uniform stress distribution on the housing assembly 100, further improving the rigidity and strength of the housing assembly 100, and further enhancing the noise reduction and heat dissipation performance of the electric assembly 1, thus improving the cooling effect of the electric assembly 1.

[0145] According to another embodiment of the present invention, the ribs include annular ribs 163 extending circumferentially along the motor 200 and strip-shaped ribs 161 extending radially along the motor 200, wherein there are multiple strip-shaped ribs 161 spaced apart circumferentially along the mounting plate 160. This can simultaneously improve the rigidity and strength of the housing assembly 100 along both the circumferential and radial directions of the motor 200, improve the structural reliability of the housing assembly 100, further increase the heat dissipation area of ​​the housing assembly 100, and improve the heat dissipation and cooling performance of the electric assembly 1.

[0146] Specifically, the height of the rib 161 from the mounting plate 160 gradually decreases from the inside to the outside. This reduces the space required for the rib 161, preventing it from occupying too much space within the housing assembly 100, and further facilitating the installation and setup of the motor 200 and the gearbox 400. Furthermore, the gradual decrease in height of the rib 161 from the mounting plate 160, with its highest point at the center, allows it to withstand the high-intensity load exerted by the bearings on the housing assembly 100.

[0147] According to one embodiment of the present invention, the housing assembly 100 includes a transmission housing 101 and a motor housing 102. The transmission housing 101 includes a front housing 180 and a rear housing 190, and the motor housing 102 includes a motor housing 105 and a motor rear end cover 150. The front housing 180 and the motor housing 105 are arranged adjacent to each other, and the mounting plate 160 is constructed as a part of the front housing 180 or a part of the motor housing 105. This facilitates the electric power assembly 1 to have a three-section structure, facilitates the formation of the transmission housing 104 and the motor housing 103, and facilitates the installation and disassembly of the electric power assembly 1. At the same time, since the mounting plate 160 is a part of the front housing 180 or a part of the motor housing 105, integrating the mounting plate 160 onto the housing assembly 100 can improve the structure of the housing assembly 100 to be more reasonable and compact, and can allow the mounting plate 160 to be cooled by the transmission 400 lubricating fluid, thereby improving the lubrication and cooling effect of the mounting plate 160.

[0148] Furthermore, the front housing 180 and the motor housing 105 are integrally formed or detachably connected. In this way, the electric power assembly 1 can be a three-section structure, which facilitates the installation of the motor 200 and the transmission 400.

[0149] According to another embodiment of the invention, such as Figure 26 and Figure 27As shown, the housing assembly 100 includes a transmission housing 101 and a motor housing 102. The transmission housing 101 includes a front housing 180 and a rear housing 190. The motor housing 102 includes a motor front cover 106, a motor housing 105, and a motor rear cover 150. The mounting plate 160 is constructed as a part of the front housing 180 or a part of the motor front cover 106. This facilitates the electric power assembly 1 to have a three-section structure, facilitates the formation of the transmission housing 104 and the motor housing 103, and facilitates the installation and removal of the electric power assembly 1. At the same time, since the mounting plate 160 is a part of the front housing 180 or a part of the motor housing 105, integrating the mounting plate 160 into the housing assembly 100 can improve the structure of the housing assembly 100 to be more reasonable and compact, and can allow the mounting plate 160 to be cooled by the transmission 400 lubricating fluid, thereby improving the lubrication and cooling effect of the mounting plate 160.

[0150] According to one embodiment of the present invention, such as Figure 23 As shown, the motor housing 105, the motor front cover 106, and the front housing 180 are integrally formed, or the motor housing 105, the motor front cover 106, and the front housing 180 are detachably connected in pairs. This can improve the structural flexibility of the housing assembly, facilitate the optimization of the structure of the housing assembly 100, facilitate the reduction of the weight of the housing assembly 100, and improve the range of the electric assembly 1.

[0151] According to another embodiment of the present invention, the motor front cover 106 and the front housing 180 are integrally formed, and the motor housing 105 is detachably connected to the motor front cover 106. This simplifies the assembly process of the housing assembly 100 and improves the assembly efficiency of the housing assembly 100.

[0152] According to another embodiment of the present invention, the motor front cover 106 and the motor housing 105 are integrally formed, and the motor front cover 106 is detachably connected to the front housing 180. This facilitates the separation of the gearbox housing 101 and the motor housing 102, and improves the structural flexibility of the housing assembly 100.

[0153] According to another embodiment of the present invention, the motor housing 105 and the motor front end cover 106 are connected by bolts, the motor front end cover 106 and the front housing 180 are connected by bolts, and the motor housing 105 and the motor rear end cover 150 are connected by bolts. This facilitates the processing and forming of the motor housing 105, the motor front end cover 106, the front housing 180 and the rear housing 190, simplifying the forming process. Since the motor front end cover 106, the motor housing 105 and the motor rear end cover 150 are all detachable, the length of the motor 200 can be adjusted. For example, the motor housing 105 can be used as a standard part with its length adjusted independently, improving the structural flexibility and application range of the motor 200.

[0154] Specifically, such as Figure 27 As shown, one or more of a first connecting rib 181, a second connecting rib 182, and a third connecting rib 183 connect the outer surface of the front housing 180 and the outer surface of the motor housing 105. The first connecting rib 181 connects the upper end face of the motor housing 105 and the front housing 180, the second connecting rib 182 connects the lower end face of the motor housing 105 and the front housing 180, and the third connecting rib 183 is located between the first connecting rib 181 and the second connecting rib 182. This strengthens the connection between the front housing 180 and the motor housing 105, preventing weak points at the connection that could cause deformation or damage, and improving the overall structural performance of the housing assembly 100.

[0155] Optionally, such as Figure 24As shown, the transmission 400 includes a main shaft 300, which is dynamically coupled to the motor shaft 210 of the motor 200. At least one of the motor shaft 210 and the main shaft 300 passes through a shaft through-hole 130 and is connected to the other. The main shaft 300 and the motor shaft 210 of the motor 200 are connected by a spline. This facilitates direct transmission between the motor shaft 210 and the main shaft 300, eliminating the need for additional transmission structures, further simplifying the structure of the electric assembly 1, improving the integration of the electric assembly 1, and facilitating the timely transmission of power output from the motor 200 to the transmission 400. This also improves the transmission efficiency of the electric assembly 1 and enhances the timeliness and accuracy of power transmission. Furthermore, the spline allows for the fixation and positioning of the main shaft 300 and the motor shaft 210, preventing relative rotation between them, ensuring reliable transmission of the electric assembly 1, and guaranteeing its transmission efficiency. This not only eliminates the need for other structures connecting the main spindle 300 and the motor shaft 210, thereby further simplifying the structure of the electric assembly 1 and improving its integration, but also further shortens the axial spacing of the electric assembly 1 due to the interlocking of the main spindle 300 and the motor shaft 210, making it easier to control the axial dimensions of the electric assembly 1 on the motor shaft 210.

[0156] Furthermore, such as Figure 23 As shown, the spindle 300 has a shaft hole 310, and the inner circumferential surface of the shaft hole 310 has an internal spline 311. The outer circumferential surface of the motor shaft 210 has an external spline 211. The motor shaft 210 of the motor 200 is fitted into the shaft hole 310, and the internal spline 311 and the external spline 211 engage with each other. This facilitates the machining of the internal spline 311 and helps improve its machining accuracy. By utilizing the engagement of the internal spline 311 and the external spline 211, not only can the transmission connection between the spindle 300 and the motor shaft 210 be achieved, but also the reliable positioning of the spindle 300 and the motor shaft 210 can be achieved, further preventing relative rotation between the spindle 300 and the motor shaft 210. Simultaneously, the motor 200 is a three-section motor, with the spindle 300 and the motor shaft 210 interlocked. The length of the motor 200 can be adjusted as needed, facilitating changes in the torque and power of the motor 200 and improving its compatibility.

[0157] Specifically, the shaft hole 310 extends through the main shaft 300 along its axial direction. An oil baffle 320 fits inside the shaft hole 310. The oil baffle 320, the inner circumferential wall of the shaft hole 310, and the motor shaft 210 together define an oil reservoir 330, which is filled with lubricating oil. The oil baffle 320 has a vent hole 350. This facilitates the placement of lubricating oil and effectively prevents leakage of lubricating oil from the shaft hole 310, thus protecting the spline lubrication system. This allows the main shaft 300 to have an oil storage function, which can lubricate and cool the spline. The vent hole 350 can discharge any generated gas in a timely manner. The shaft hole 310 extending through the main shaft 300 along its axial direction can prevent gas from remaining in the shaft hole 310 and affecting the installation of the motor shaft 210 and the main shaft 300.

[0158] More specifically, sealing rings 340 are fitted between the oil baffle 320 and the shaft hole 310, and between the outer circumferential surface of the motor shaft 210 and the inner circumferential surface of the shaft hole 310. This facilitates the sealing of the oil reservoir 330, prevents leakage of lubricating oil in the oil reservoir 330, and improves the sealing effect of the oil reservoir 330.

[0159] Optionally, such as Figure 3 As shown, the electric assembly 1 also includes multiple bearings 800, which are respectively sleeved on the motor shaft 210 and the main shaft 300 and spaced apart along the axial direction of the motor shaft 210 and the main shaft 300. This facilitates the smooth rotation of the motor shaft 210 and the main shaft 300, and improves the reliability and accuracy of the rotation of the motor shaft 210 and the main shaft 300.

[0160] According to one embodiment of the present invention, such as Figure 8 As shown, the multiple bearings 300 include a first bearing 810, a second bearing 820, and a third bearing 830. The first bearing 810 and the second bearing 820 are respectively disposed near the two ends of the main shaft 300, and the third bearing 830 is disposed near the end of the motor shaft 210 away from the main shaft 300. This not only facilitates the arrangement of the motor shaft 210 and the main shaft 300, and further facilitates the smooth rotation of the motor shaft 210 and the main shaft 300, but also reduces the number of bearings, thereby reducing the cost of the electric assembly 1.

[0161] Specifically, the third bearing 830 is located between the end of the motor shaft 210 away from the gearbox 400 and the housing assembly 100; the first bearing 810 is located between the end of the main shaft 300 away from the motor 200 and the housing assembly 100; and the second bearing 820 is located between at least one of the ends of the motor 200 shaft and the main shaft 300 near the motor shaft 210 and the housing assembly 100. This allows for a more balanced force distribution on the motor shaft 210 and the main shaft 300, thus improving the working performance of the electric assembly 1.

[0162] Optionally, the second bearing 820 is sleeved outside the main shaft 300 and located at the axial overlap of the main shaft 300 and the motor shaft 210. This allows the second bearing 820 to support both the main shaft 300 and the motor shaft 210, ensuring the reliability of their installation. Since the axial overlap of the main shaft 300 and the motor shaft 210 is a point of stress concentration during rotation, the effective support of the second bearing 820 prevents breakage of the main shaft 300 and the motor shaft 210, thus improving their working performance.

[0163] According to another embodiment of the invention, such as Figure 9 As shown, it also includes a fourth bearing 840, which is sleeved on the motor shaft and located between the motor shaft and the motor housing. This allows the fourth bearing 840 to strengthen the support for the motor shaft 210, further improving the reliability of the motor shaft 210.

[0164] Specifically, the fourth bearing 840 is located axially between the main shaft 300 and the stator of the motor 200 on the motor shaft 210. This allows for a more even distribution of force between the main shaft 300 and the motor 200, thereby improving the reliability and stability of power transmission between them.

[0165] Optionally, such as Figure 11 As shown, the outer surface of the motor housing 105 is provided with reinforcing ribs 141 arranged along the outer surface of the motor housing 105. This not only helps to improve the strength of the motor housing 105, but also increases the surface area of ​​the motor housing 105 and improves the heat dissipation performance of the motor housing 105.

[0166] Specifically, such as Figure 29 As shown, the controller 500 has a housing 560, which includes a cover plate 561 and a base 562. The cover plate 561 and the base 562 together define a cavity. The surface of the cover plate 561 is provided with a protruding portion 563. Specifically, the inner and outer surfaces of the cover plate 561 can both be provided with protruding portions. This facilitates the arrangement of the internal structure of the controller 500 and facilitates the protection of the internal structure of the controller 500.

[0167] Furthermore, the protrusion 563 is located at the center of the cover plate 561. This facilitates the improvement of the strength and rigidity at the center of the cover plate 561, thereby further enhancing the structural stability of the cover plate 561.

[0168] More specifically, such as Figure 29As shown, the surface of the cover plate 561 is provided with a plurality of cover plate reinforcing ribs 564, each cover plate reinforcing rib 564 extending from the center of the protrusion 563 to the periphery of the cover plate 561. In this way, without increasing the wall thickness of the cover plate 561, the strength and rigidity of the cover plate 561 can be enhanced, thereby saving the amount of material used in the cover plate 561, making it easier to reduce the weight of the cover plate 561, and thus reducing the cost of the electric assembly 1.

[0169] Furthermore, such as Figure 29 As shown, a boss 565 is provided at the center of the opposite two sides of the protrusion 563. This further enhances the strength and rigidity of the cover plate 561, facilitating the assembly of the controller 500.

[0170] Furthermore, such as Figure 29 As shown, each boss 565 has multiple boss reinforcing ribs 566, and each boss reinforcing rib 566 extends from the center of the boss 565 to the periphery of the cover plate 561. This can prevent the cover plate 561 from deforming and improve the reliability and stability of the controller 500.

[0171] Optionally, a portion of the transmission 400 is located within the front housing 180. Another portion of the transmission 400 is located within the rear housing 190. The motor rear end cover 150 is detachably mounted on the motor housing 105. This facilitates the disassembly and installation of the electric assembly 1, facilitates the maintenance of the electric assembly 1, and improves the maintenance efficiency of the electric assembly 1.

[0172] Furthermore, the end face of the motor housing 103 away from the gearbox housing 104 can be opened, and the rear end cover 150 of the motor 200 after the motor is installed in the housing assembly 100 covers the motor housing 103.

[0173] Optionally, the motor housing 105, the front motor cover 106, the rear motor cover 150, the cavity cover 620, and the controller 500 are installed by bolts. This not only ensures the reliability and stability of the fixed connection of the electric assembly 1, but also allows for quick disassembly of the electric assembly 1 in case of a malfunction, further facilitating its maintenance.

[0174] Specifically, the first bearing 810 is located on the end cover, the second bearing 820 and the fourth bearing 840 are respectively located at both ends of the shaft through hole 130, and the third bearing 830 is located on the end face of the motor housing 103 away from the gearbox housing 104. This makes the force on the spindle 300 and the motor 200 more even, and further facilitates the improvement of the structural stability of the electric assembly 1.

[0175] More specifically, the spindle 300 is provided with a first spindle positioning groove and a second spindle positioning groove. A first bearing 810 fits into the first spindle positioning groove, and a second bearing 820 fits into the second spindle positioning groove. The motor shaft 210 is provided with a third motor shaft positioning groove and a fourth motor shaft positioning groove. A third bearing 830 fits into the third motor shaft positioning groove, and a fourth bearing 840 fits into the fourth motor shaft positioning groove. The housing assembly 100 is provided with a housing positioning groove that mates with the bearing 800. This allows the bearing 800 to be positioned using these positioning grooves, facilitating reliable installation of the bearing 800 and improving the accuracy of its position.

[0176] Optionally, the electric power assembly 1 can be directly mounted to the vehicle chassis via the mounting points on the housing assembly 100. This further facilitates the installation of the electric power assembly 1, improves the installation efficiency of the vehicle, and reduces the installation cost.

[0177] Specifically, such as Figure 7 As shown, the transmission 400 includes a differential assembly 440, a first gear 410, a second gear 420, a third gear 430, and a drive shaft 450. The first gear 410 is mounted on the main shaft 300, and the second gear 420 and the third gear 430 are mounted on the drive shaft 450. The first gear 410 and the second gear 420 mesh, and the third gear 430 meshes with the differential assembly 440. This facilitates the transmission 400 to achieve gear shifting.

[0178] Optionally, the motor section 110 is cylindrical, the transmission section 120 protrudes outward from the outer periphery of the motor section 110, the motor receiving cavity 103 is located in the motor section 110, and the transmission gear receiving cavity is located in the transmission section 120. This facilitates the protection of the electric assembly 1 by the housing assembly 100.

[0179] Specifically, the motor shaft 210 is parallel to the axes of the main shaft 300, the drive shaft 450, and the differential assembly 440. This facilitates the smooth transmission of power by the electric powertrain 1.

[0180] The vehicle according to an embodiment of the present invention is described below. The vehicle according to an embodiment of the present invention includes an electric powertrain 1 according to the above embodiment of the present invention.

[0181] The vehicle according to the embodiments of the present invention, by utilizing the electric power assembly 1 according to the above embodiments of the present invention, has advantages such as compact structure and strong applicability.

[0182] Other configurations and operations of the vehicle according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0183] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0184] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0185] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0186] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electric powertrain, characterized in that, include: Enclosure assembly; The motor is located within the housing assembly; A transmission, which is located within the housing assembly and is power-coupled to the motor; A controller is located outside the housing assembly and is fixedly connected to the housing assembly; The transmission includes a main shaft, which is dynamically coupled to the motor shaft of the motor. At least one of the motor shaft and the main shaft passes through the shaft through-hole and is connected to the other. The main shaft and the motor shaft of the motor are connected by a spline.

2. The electric powertrain according to claim 1, characterized in that, It also includes a conductive sheet for connecting the controller and the motor.

3. The electric powertrain according to claim 2, characterized in that, It also includes a conductive sheet, which is snapped onto the controller or fixed to the controller by bolts.

4. The electric powertrain according to claim 1, characterized in that, The controller is located above the housing assembly.

5. The electric powertrain according to claim 4, characterized in that, The height-to-width ratio of the electric power assembly ranges from 0.6 to 0.

9.

6. The electric powertrain according to claim 4, characterized in that, The upper surface of the housing assembly contacts the lower surface of the controller, and the lower surface of the controller is fixed to the housing assembly by bolts.

7. The electric powertrain according to claim 1, characterized in that, The transmission and the motor together define a bend space, the half-shaft of the transmission extends into the bend space, and the controller is mounted above the half-shaft.

8. The electric powertrain according to claim 7, characterized in that, A ball cage is provided at the end of the half shaft, and the controller is located above the ball cage, but the controller does not contact the ball cage.

9. The electric powertrain according to claim 1, characterized in that, The controller and the motor are respectively installed on the same side or both sides of the transmission.

10. The electric powertrain according to claim 1, characterized in that, The housing assembly is provided with a mounting plate, which divides the space inside the housing assembly into a motor receiving cavity and a transmission receiving cavity arranged axially along the motor shaft. The mounting plate has a shaft through hole connecting the motor receiving cavity and the transmission receiving cavity, and the motor and the transmission are dynamically coupled.

11. The electric powertrain according to claim 1, characterized in that, The controller has a housing, which includes a cover plate and a base. The cover plate and the base together define a cavity, and the surface of the cover plate has a protrusion.

12. The electric powertrain according to claim 11, characterized in that, The protrusion is located at the center of the cover plate.

13. The electric powertrain according to claim 11, characterized in that, The surface of the cover plate is provided with a plurality of cover plate reinforcing ribs, each of the cover plate reinforcing ribs extending from the center of the protrusion to the periphery of the cover plate.

14. The electric powertrain according to claim 11, characterized in that, A boss is provided at the center of the opposite two sides of the protrusion.

15. The electric powertrain according to claim 14, characterized in that, Each of the bosses has multiple boss reinforcing ribs, and each boss reinforcing rib extends from the center of the boss to the periphery of the cover plate.

16. The electric powertrain according to claim 10, characterized in that, The mounting plate has ribs on the side facing the motor.

17. The electric powertrain according to claim 16, characterized in that, The ribs divide the space between the mounting plate and the motor into multiple cavities.

18. The electric powertrain according to claim 10, characterized in that, The maximum distance between the motor and the mounting plate is less than a preset distance.

19. The electric powertrain according to claim 16, characterized in that, The ribs include annular ribs extending circumferentially along the motor.

20. The electric powertrain according to claim 16, characterized in that, The ribs include strip-shaped ribs extending radially along the motor, and there are multiple ribs spaced apart circumferentially along the mounting plate.

21. The electric powertrain according to claim 20, characterized in that, The height of the ribs from the mounting plate gradually decreases from the inside to the outside.

22. The electric powertrain according to claim 1, characterized in that, The housing assembly includes a transmission housing and a motor housing. The transmission housing includes a front housing and a rear housing. The motor housing includes a motor housing and a rear end cover. The front housing and the motor housing are arranged adjacent to each other. The mounting plate is constructed as part of the front housing or part of the motor housing.

23. The electric powertrain according to claim 22, characterized in that, The front housing and the motor housing are either integrally formed or detachably connected.

24. The electric powertrain according to claim 1, characterized in that, The housing assembly includes a gearbox housing and a motor housing. The gearbox housing includes a front housing and a rear housing. The motor housing includes a front motor cover, a motor housing, and a rear motor cover. The mounting plate is constructed as part of the front housing or part of the front motor cover.

25. The electric powertrain according to claim 24, characterized in that, The motor housing, the motor front cover, and the front housing are integrally formed, or the motor housing, the motor front cover, and the front housing are detachably connected in pairs.

26. The electric powertrain according to claim 24, characterized in that, The motor front cover and the front housing are integrally formed, and the motor housing is detachably connected to the motor front cover.

27. The electric powertrain according to claim 24, characterized in that, The motor front cover and the motor housing are integrally formed, and the motor front cover is detachably connected to the front housing.

28. The electric powertrain according to claim 22 or 24, characterized in that, One or more of a first connecting rib, a second connecting rib, and a third connecting rib are connected between the outer surface of the front housing and the outer surface of the motor housing. The first connecting rib is connected between the upper end face of the motor housing and the front housing, the second connecting rib is connected between the lower end face of the motor housing and the front housing, and the third connecting rib is located between the first connecting rib and the second connecting rib.

29. The electric powertrain according to claim 1, characterized in that, The main shaft is provided with a shaft hole, the inner circumferential surface of the shaft hole is provided with an internal spline, the outer circumferential surface of the motor shaft is provided with an external spline, the motor shaft of the motor is fitted into the shaft hole and the internal spline and the external spline are mutually engaged.

30. The electric powertrain according to claim 29, characterized in that, The shaft hole extends through the main shaft along its axial direction. An oil baffle plate is fitted inside the shaft hole. The oil baffle plate, the inner circumferential wall of the shaft hole, and the motor shaft together define an oil storage cavity. The oil storage cavity is filled with lubricating oil. A vent hole is provided on the oil baffle plate.

31. The electric powertrain according to claim 30, characterized in that, A sealing ring is fitted between the oil baffle plate and the shaft hole, and between the outer circumferential surface of the motor shaft and the inner circumferential surface of the shaft hole.

32. The electric powertrain according to claim 22 or 24, characterized in that, The outer surface of the motor housing is provided with reinforcing ribs arranged along the outer surface of the motor housing.

33. A vehicle, characterized in that, Includes the electric powertrain according to any one of claims 1-32.

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