Powertrain and vehicle having the same

Abstract

The application relates to the field of power equipment and discloses a power assembly and a vehicle with the same, the power assembly comprising an intermediate box (1) and a first motor (3) and a second motor (4) connected to the two transverse sides of the intermediate box, the intermediate box (1) being provided with a terminal block mounting cavity (19) located between the first motor and the second motor and above the motor output shaft, the upper side of the terminal block mounting cavity (19) being formed with a first upper half opening with a first mounting surface (19a) and a second upper half opening with a second mounting surface (19b) arranged longitudinally adjacent to each other, the second mounting surface being provided with a first half cover plate, the first mounting surface being provided with a second half cover plate, and the second mounting surface being higher than the first mounting surface. The power assembly can reduce the occupation of the space above, has the advantages of compact structure, high space utilization and the like, and can be conveniently arranged in the vehicle.

Description

Technical Field

[0001] This invention relates to power equipment, and more specifically to a powertrain. Furthermore, this invention also relates to a vehicle having the powertrain. Background Technology

[0002] With the development of new energy technologies and the deterioration of the human living environment, new energy vehicles, represented by electric vehicles, are receiving increasing attention. The electric powertrain, which integrates a motor and a reduction gear, is one of the key components of an electric vehicle. Its high reliability, lightweight design, and high space utilization have a significant impact on the overall performance of the electric vehicle.

[0003] Because four-wheel independent drive vehicles can independently and precisely control the torque and speed of each of the four wheels, they offer a series of significant advantages, such as a smaller turning radius, ESP assistance, assisted steering, and assisted braking, resulting in excellent handling and high power performance. These electric vehicles can use a dual-drive assembly integrating dual motors, motor controllers, and dual reducers as their power source, thus achieving a high degree of integration. However, the dual-drive assembly requires more space than a single-motor system, especially due to its higher Z-axis height, which places higher demands on the vehicle's Z-axis spatial layout. Summary of the Invention

[0004] The purpose of this invention is to overcome the problem of difficult Z-axis spatial layout of vehicles equipped with dual electric drive assemblies in the prior art, and to provide a powertrain with a compact Z-axis structure, high space utilization, and convenient placement in a vehicle.

[0005] To achieve the above objectives, the present invention provides a powertrain, comprising:

[0006] Intermediate box;

[0007] A first motor and a second motor are connected to the lateral sides of the intermediate housing, respectively, opposite to each other.

[0008] The intermediate housing is provided with a terminal block mounting cavity, which is located between the first motor and the second motor and above the motor output shafts of the first motor and the second motor.

[0009] The upper side of the terminal mounting cavity is formed with a first upper half opening, a second upper half opening, a first half cover plate and a second half cover plate, the first upper half opening and the second upper half opening are longitudinally arranged adjacent to each other, the first half cover plate is closed by cooperating with the first mounting surface of the first upper half opening, and the second half cover plate is closed by cooperating with the second mounting surface of the second upper half opening, and the second mounting surface is higher than the first mounting surface.

[0010] Preferably, the motor output shaft of the first motor and the motor output shaft of the second motor are parallel or coaxial with each other.

[0011] Preferably, the lateral sides of the intermediate box body are respectively connected with a first motor box body and a second motor box body, and the first motor and the second motor are respectively installed into the first motor box body and the second motor box body.

[0012] Preferably, the first mounting surface and the second mounting surface are arranged at an angle with each other.

[0013] Preferably, the second mounting surface is parallel to the horizontal plane, and / or the first mounting surface is arranged parallel to the lateral direction and inclined to the longitudinal direction.

[0014] Preferably, the first half cover plate is provided with a power distribution connector, and the power distribution connector includes a first electrical connection part towards the inside of the terminal mounting cavity and a second electrical connection part towards the outside of the terminal mounting cavity.

[0015] Preferably, three-phase terminals and boost charging terminals are installed in the terminal mounting cavity.

[0016] Or,

[0017] The terminal mounting cavity is provided with integrated terminals, and the integrated terminals are provided with three-phase terminals and boost charging terminals.

[0018] Preferably, a crossbeam is formed between the first upper half opening and the second upper half opening, and the first half cover plate and the second half cover plate are separately arranged.

[0019] Or

[0020] The first upper half opening and the second upper half opening are communicated, and the first half cover plate and the second half cover plate are integrally arranged.

[0021] Preferably, the lateral sides of the terminal mounting cavity are respectively formed with a first lateral opening and a second lateral opening, and the wires of the first motor are adapted to pass through the first lateral opening into the terminal mounting cavity, and the wires of the second motor are adapted to pass through the second lateral opening into the terminal mounting cavity.

[0022] Preferably, a longitudinal side of the terminal block mounting cavity is formed with a longitudinal opening and a third cover plate for closing the longitudinal opening.

[0023] Preferably, further comprising a transmission device and a power output shaft, the motor output shaft of the first motor and the motor output shaft of the second motor transmit power to the power output shaft through the transmission device;

[0024] The intermediate box further comprises a first mounting cavity and a second mounting cavity, the first mounting cavity is located between the first motor and the second motor and below the terminal block mounting cavity, the second mounting cavity is located below the longitudinal side of the first mounting cavity, the motor output shaft of the first motor and the motor output shaft of the second motor extend into the first mounting cavity respectively, and at least part of the power output shaft is installed in the second mounting cavity.

[0025] Preferably, the first mounting cavity comprises a first left half mounting cavity and a first right half mounting cavity, the second mounting cavity comprises a second left half mounting cavity and a second right half mounting cavity, the transmission device comprises a first transmission device and a second transmission device, and the power output shaft comprises a first power output shaft and a second power output shaft,

[0026] The first transmission device is installed in the first left half mounting cavity and the second left half mounting cavity, and the second transmission device is installed in the first right half mounting cavity and the second right half mounting cavity,

[0027] At least part of the first power output shaft is installed in the second left half mounting cavity, and at least part of the second power output shaft is installed in the second right half mounting cavity,

[0028] The motor output shaft of the first motor extends into the first left half mounting cavity and transmits power to the first power output shaft through the first transmission device, and the motor output shaft of the second motor extends into the first right half mounting cavity and transmits power to the second power output shaft through the second transmission device.

[0029] Preferably, the intermediate box further comprises a longitudinally extending intermediate partition plate, the first left half mounting cavity and the first right half mounting cavity are separated by the intermediate partition plate, and the second left half mounting cavity and the second right half mounting cavity are separated by the intermediate partition plate.

[0030] Preferably, further comprising a motor controller, the motor controller is installed on the intermediate box, at least part of the motor controller is located on the longitudinal side of the first mounting cavity, and at least part of the motor controller is located above the second mounting cavity.

[0031] Preferably, the motor controller is installed on the intermediate box body in a manner inclined relative to a horizontal plane.

[0032] Preferably, the motor controller is installed on the intermediate box body through a first mounting seat and a second mounting seat provided on the intermediate box body, wherein the first mounting seat and the second mounting seat are located at different height positions.

[0033] Preferably, the first mounting seat is integrally formed with the intermediate box body and extends outwards from both sides of a box part of the intermediate box body in which the first mounting cavity is defined.

[0034] and / or

[0035] The second mounting seat is fixedly connected with the intermediate box body and extends outwards from both sides of a box part of the intermediate box body in which the second mounting cavity is defined.

[0036] Preferably, the first mounting seat and the second mounting seat are arranged in such a manner that a bottom surface of the motor controller is spaced apart from an outer wall surface of the second mounting cavity.

[0037] Preferably, the motor controller has an electric control upper cover which is formed with a downwardly recessed arc-shaped structure.

[0038] Preferably, a plurality of reinforcing ribs extending in a transverse direction and / or a plurality of reinforcing ribs extending in a longitudinal direction are formed on the outer side wall of the intermediate box body.

[0039] The second aspect of the present application provides a vehicle provided with the power assembly.

[0040] By means of the above technical solution, the power assembly of the present application forms a terminal block mounting cavity between the first motor and the second motor, an upper side opening of the terminal block mounting cavity is formed with a first half cover plate and a second half cover plate installed at different height positions, thereby reducing the occupation of the space above the terminal block mounting cavity, saving the Z-direction space in the vehicle, being more compact in structure compared to the conventional arrangement, and having a high space utilization rate, so that the power assembly can be conveniently arranged in the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a transmission principle diagram of the power assembly according to a preferred embodiment of the present application;

[0042] Figure 2 is a perspective structural diagram of the power assembly according to a preferred embodiment of the present application;

[0043] Figure 3 is Figure 2 is an exploded view of the power assembly;

[0044] Figure 4 isFigure 2 top view of the middle power assembly;

[0045] Figure 5 is Figure 2 left view of the middle power assembly;

[0046] Figure 6 is Figure 2 perspective view of the middle box of the middle power assembly;

[0047] Figure 7 is Figure 6 front view of the middle box in which the three-phase terminal cover plate and the step-up charging terminal cover plate are removed;

[0048] Figure 8 is Figure 6 top view of the middle box in which the three-phase terminal cover plate and the step-up charging terminal cover plate are removed;

[0049] Figure 9 is Figure 6 right view of the middle box in which the three-phase terminal cover plate and the step-up charging terminal cover plate are removed.

[0050] BRIEF DESCRIPTION OF DRAWINGS

[0051] 1 - middle box; 1a - middle partition; 11 - first mounting seat; 12 - second mounting seat; 13 - first mounting cavity; 131 - first left half mounting cavity; 132 - first right half mounting cavity; 14 - second mounting cavity; 141 - second left half mounting cavity; 142 - second right half mounting cavity; 15 - first half cover plate; 151 - power distribution connector; 16 - second half cover plate; 17 - cross beam; 18 - third cover plate; 19 - terminal mounting cavity; 19a - first mounting surface; 19b - second mounting surface; 19c - second transverse opening; 19d - longitudinal opening; 2 - motor controller; 21 - arc-shaped structure; 3 - first motor; 4 - second motor; 5 - three-phase terminal; 6 - step-up charging terminal; 7 - locking mechanism; 8 - gear position sensor; 9 - electronic oil pump; 10 - plate heat exchanger; 30 - first motor box; 40 - second motor box; 31, 41 - motor output shaft; 50 - first transmission device; 60 - second transmission device; 51, 61 - intermediate shaft; 70 - first power output shaft; 80 - second power output shaft. DETAILED DESCRIPTION

[0052] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and explanatory and are not intended to limit the present application.

[0053] In the present application, the orientation words such as "upper, lower, left, right" used herein generally refer to the upper, lower, left and right shown in the drawings, and "inner, outer" refer to the inner and outer relative to the contour of the components themselves. In the present application, the orientation words such as "Z direction" generally refer to the coordinate system Z direction of the vehicle in which the power assembly is located, i.e. when the vehicle is in a static state on a horizontal road surface, the up-down direction of the vehicle is the Z direction. Correspondingly, the orientation word "lateral direction" corresponds to the Y direction of the vehicle (i.e. left-right direction), and the "longitudinal direction" corresponds to the X direction of the electric vehicle (i.e. front-rear direction). It should be noted that the above-mentioned correspondence between the directions and the vehicle coordinate system is only for better understanding of the present application, and does not mean that the power assembly has been or will be installed in the vehicle, and it can also be used in other appropriate occasions. In this regard, the "lateral direction" and "longitudinal direction" can also be determined based on the axial direction of the motor output shaft in the power assembly, i.e. the "lateral direction" is the axial direction of the motor output shaft, and the "longitudinal direction" is the horizontal direction perpendicular to the axial direction of the motor output shaft.

[0054] In addition, in the following description, the terms "first", "second", etc. are used only for the convenience of clear description, and these terms do not represent any difference between the related structures or components unless otherwise stated.

[0055] Figure 1 The transmission principle diagram of a power assembly is shown. The power assembly is integrally provided with a first motor 3 and a second motor 4, which are respectively connected to an intermediate box 1 defining a first mounting cavity 13 and a second mounting cavity 14, and are respectively connected to a left wheel W1 and a right wheel W2 through a transmission device (such as a plurality of gear sets) mounted in the first mounting cavity 13 and the second mounting cavity 14. The intermediate box can also be provided with a locking mechanism 7 for locking or releasing the transmission path from the first motor 3 to the left wheel W1 and the transmission path from the second motor 4 to the right wheel W2, so as to switch the first motor 3 and the second motor 4 to independently or synchronously drive the left wheel W1 and the right wheel W2. In the case of arranging the power assembly on the rear axle, the height of the power assembly should not be too large due to the relatively limited Z direction space in this area.

[0056] In order to better understand the present application, the Figure 1 The specific structure of the intermediate box 1 and the transmission device in the preferred embodiment is also shown. Specifically, the lateral sides of the intermediate box 1 can be respectively connected with a first motor box 30 and a second motor box 40, which can be connected to the two sides of the intermediate box 1 by bolts or other fasteners. The first motor 3 and the second motor 4 are respectively mounted into the first motor box 30 and the second motor box 40, so as to be assembled into the whole vehicle after the sub-assembly is completed.

[0057] As will be described later, in a power assembly according to a preferred embodiment of the present application, a middle partition la is provided in the middle casing 1, which divides the first mounting cavity 13 into a first left half mounting cavity 131 and a first right half mounting cavity 132, and divides the second mounting cavity 14 into a second left half mounting cavity 141 and a second right half mounting cavity 142. One end of each gear shaft (e.g. motor output shafts 31, 41, intermediate shafts 51, 61, power output shafts 70, 80) can be rotatably mounted to the middle partition la through a bearing. The motor output shaft 31 of the first motor 3 extends into the first left half mounting cavity 131 and is drivingly connected to the first power output shaft 70 through the first transmission device 50 provided in the second left half mounting cavity 141 for driving the left wheel Wl to rotate; the motor output shaft 41 of the second motor 4 extends into the first right half mounting cavity 132 and is drivingly connected to the second power output shaft 80 through the second transmission device 60 provided in the second right half mounting cavity 142 for driving the right wheel W2 to rotate. It should be noted that the above description is only for the purpose of facilitating the understanding of the transmission path and structural arrangement of the power assembly according to the preferred embodiment of the present application, and should not be construed as necessarily having all the above-mentioned components or structures. Figure 1 It should be noted that the above description is only for the purpose of facilitating the understanding of the transmission path and structural arrangement of the power assembly according to the preferred embodiment of the present application, and should not be construed as necessarily having all the above-mentioned components or structures.

[0058] As shown in Figs. 1 to 3, according to a preferred embodiment of the present application, the power assembly comprises a middle casing 1 and a first motor 3 and a second motor 4 connected to the middle casing 1 respectively. The first motor 3 and the second motor 4 are connected to the lateral sides of the middle casing 1 opposite to each other. For example, in the perspective view shown in Fig. 1, the first motor 3 is connected to the right side of the middle casing 1, and the second motor 4 is connected to the left side of the middle casing 1, and the two are opposite to each other. Figure 1 Figures 2 to 9 As shown in Figs. 1 to 3, according to a preferred embodiment of the present application, the power assembly comprises a middle casing 1 and a first motor 3 and a second motor 4 connected to the middle casing 1 respectively. The first motor 3 and the second motor 4 are connected to the lateral sides of the middle casing 1 opposite to each other. For example, in the perspective view shown in Fig. 1, the first motor 3 is connected to the right side of the middle casing 1, and the second motor 4 is connected to the left side of the middle casing 1, and the two are opposite to each other. Figure 4

[0059] As shown in Figs. 1 to 3, according to a preferred embodiment of the present application, the power assembly comprises a middle casing 1 and a first motor 3 and a second motor 4 connected to the middle casing 1 respectively. The first motor 3 and the second motor 4 are connected to the lateral sides of the middle casing 1 opposite to each other. For example, in the perspective view shown in Fig. 1, the first motor 3 is connected to the right side of the middle casing 1, and the second motor 4 is connected to the left side of the middle casing 1, and the two are opposite to each other. Figure 5 Figure 6 ,​​​Figure 8 And Figure 9 In the preferred embodiment shown, the first mounting surface 19a and the second mounting surface 19b are arranged at an angle to each other, thereby forming an inverted V-shaped included angle therebetween, so that the first mounting surface 19a extends downwardly at an angle to the longitudinal relative horizontal plane away from the second mounting surface 19b, thereby leaving a space above the first half cover plate 15 that can be used to arrange other components or structures, which is conducive to reducing the overall height of the dual drive assembly. Among them, the second mounting surface 19b can be arranged parallel to the horizontal plane, and the first mounting surface 19a can be arranged relative to the transverse parallel and inclined relative to the longitudinal extension. In other embodiments, the first mounting surface 19a and the second mounting surface 19b can also be arranged in a stepped manner, that is, the first mounting surface 19a and the second mounting surface 19b are both formed to extend in the horizontal plane and are located at different height positions, and the occupation of the space above can also be reduced by arranging the first mounting surface 19a lower than the second mounting surface 19b.

[0060] In Figures 2 to 4 In the preferred embodiment shown, the motor output shaft of the first motor 3 and the motor output shaft of the second motor 4 are arranged coaxially with each other, so as to stably output balanced power and ensure the installation stability. In other embodiments, the motor output shaft of the first motor 3 and the motor output shaft of the second motor 4 can be arranged parallel to each other (non-coaxial).

[0061] As mentioned above, in order to facilitate assembly, the intermediate box body 1 can be connected with the first motor box body 30 and the second motor box body 40 on the two sides in the transverse direction respectively, the first motor 3 is installed in the first motor box body 30, and the motor output shaft thereof extends into the intermediate box body 1; the second motor 4 is installed in the second motor box body 40, and the motor output shaft thereof extends into the intermediate box body 1.

[0062] The power assembly of the present application can be provided with a boost charging function, for which a corresponding boost charging terminal 6 needs to be provided. As Figure 6 And Figure 9As shown, the three-phase terminal block 5 and the boost charging terminal block 6 are installed in the terminal block installation cavity 19 of the intermediate box body 1, so that the three-phase terminal block 5 and the boost charging terminal block 6 are located above the power output shafts of the first motor 3 and the second motor 4. As aforementioned, in order to facilitate assembly and disassembly, the top wall of the terminal block installation cavity 19 can be formed with a first upper half opening and a second upper half opening, which can be closed by a first half cover plate 15 and a second half cover plate 16, respectively. Through such a sub-cavity design, not only can the three-phase terminal block 5 and the boost charging terminal block 6 be independently assembled during assembly, facilitating operation in a narrow space, but also the corresponding terminal block cover plates can be positioned using different installation surfaces, which is conducive to accurately positioning the installation position. Among them, as the first half cover plate 15 corresponding to the three-phase terminal block 5, a power distribution connector 151 can be provided thereon, which includes a first electrical connection portion facing the inside of the terminal block installation cavity 19 and a second electrical connection portion facing the outside of the terminal block installation cavity 19, so as to connect an external power source to the three-phase terminal block 5 through the first half cover plate 15.

[0063] As an alternative embodiment, an integrated terminal block can be installed in the terminal block installation cavity 19, which is provided with three-phase terminal and boost terminal, in which case the first upper half opening and the second upper half opening can be provided to communicate with each other so as to install the integrated terminal block to the terminal block installation cavity 19. In addition, although described as the first half cover plate 15 and the second half cover plate 16, they can be provided in a split structure or an integral structure as needed.

[0064] For example, in order to ensure the rigidity of the intermediate box body 1, the installation surfaces of the first half cover plate 15 and the second half cover plate 16 can be formed with a crossbeam 17 at positions adjacent to each other (i.e. V-shaped folding angle lines), so as to separate installation cavities for installing the three-phase terminal block 5 and the boost charging terminal block 6 by the crossbeam 17. In this case, the first half cover plate 15 and the second half cover plate 16 can be provided in a split manner, and the first half cover plate 15 is used to close the first upper half opening, and the second half cover plate 16 is used to close the second upper half opening, so that the positioning accuracy of the split terminal block cover plates can be ensured by the crossbeam 17. Alternatively, the first upper half opening and the second upper half opening can be provided to communicate with each other, and correspondingly, the first half cover plate 15 and the second half cover plate 16 can be provided in an integral manner.

[0065] Further, the three-phase terminal block 5 and the boost charging terminal block 6 can be arranged longitudinally with each other, and the first half cover plate 15 and the second half cover plate 16 for closing the terminal block installation cavity 19 can be installed non-coplanarly with each other.

[0066] The intermediate box body 1 can also be formed with openings for wire passing through, so as to electrically or signal connect between different components. For example, Figure 6 andFigure 9 As shown, the terminal block mounting cavity 19 may have a first lateral opening (not shown) and a second lateral opening 19c formed on both lateral sides for the motor's three-phase wires and neutral wires to pass through and connect to the terminals of the terminal block. Specifically, the wires of the first motor 3 are adapted to pass through the first lateral opening into the terminal block mounting cavity 19, and the wires of the second motor 4 are adapted to pass through the second lateral opening 19c into the terminal block mounting cavity 19, thereby enabling them to be connected to the terminals of the terminal block respectively. In addition, a longitudinal opening 19d may also be formed on one longitudinal side of the terminal block mounting cavity 19. This longitudinal opening 19d is closed by a third cover plate 18 detachably connected to the intermediate housing 1. Thus, the portion facing the longitudinal opening 19d can be used to install related parts such as the motor controller 2, as described later, so that the wiring bolts of the motor controller 2 can be opened through the longitudinal opening 19d.

[0067] In a vehicle, the powertrain provides the torque to drive the wheels to rotate. For this purpose, a transmission structure such as gears is typically incorporated to output the required torque and speed. To facilitate the arrangement of various transmission and control components, the structure of the intermediate housing 1, which serves as the load-bearing base, needs to be rationally designed. In a preferred embodiment of the invention, the intermediate housing 1 may define a first mounting cavity 13 located between the first motor 3 and the second motor 4. This first mounting cavity 13 is located below the terminal block mounting cavity 19 (e.g., Figure 6 As shown, the motor output shafts of the first motor 3 and the second motor 4 can extend into the first mounting cavity 13, respectively. Furthermore, the intermediate housing 1 can also define a second mounting cavity 14 located below the longitudinal side of the first mounting cavity 13. The powertrain of the present invention can include a transmission device and a power output shaft extending at least partially within the second mounting cavity 14. The motor output shafts of the first motor 3 and the second motor 4 can transmit power to the power output shaft via the transmission device. Thus, the space between the first motor 3 and the second motor 4 not only provides the necessary space for their respective motor gears and other meshing transmission gears, but also reserves space around it for arranging other related components (such as the aforementioned terminal mounting cavity 19 and the three-phase terminal block 5 and boost charging terminal block 6 installed therein). Furthermore, the first mounting cavity 13 and the second mounting cavity 14 are not stacked in the height direction (Z-direction), but are staggered longitudinally so that they overlap in the height direction. This not only facilitates the arrangement of transmission gears but also effectively reduces the overall height of the powertrain, thus saving Z-direction space.

[0068] More specifically, a longitudinal extending intermediate partition plate 1a can be arranged in the intermediate housing 1, thereby facilitating rotatable mounting of the transmission gears and other components in the intermediate housing 1, and further improving the overall modal and NVH performance of the intermediate housing. The first mounting cavity 13 can be divided into a first left half mounting cavity 131 and a first right half mounting cavity 132 by the intermediate partition plate 1a, and the second mounting cavity 14 can be divided into a second left half mounting cavity 141 and a second right half mounting cavity 142 by the intermediate partition plate 1a. The transmission device includes a first transmission device 50 and a second transmission device 60, the first transmission device 50 being mounted in the first left half mounting cavity 131 and the second left half mounting cavity 141, and the second transmission device 60 being mounted in the first right half mounting cavity 132 and the second right half mounting cavity 142. The power output shaft includes a first power output shaft 70 and a second power output shaft 80, at least part of the first power output shaft 70 being mounted in the second left half mounting cavity 141, and at least part of the second power output shaft 80 being mounted in the second right half mounting cavity 142. The motor output shaft 31 of the first motor 3 extends into the first left half mounting cavity 131 and transmits power to the first power output shaft 70 through the first transmission device 50, thereby being able to drive the left wheel W1 to rotate; the motor output shaft 41 of the second motor 4 extends into the first right half mounting cavity 132 and transmits power to the second power output shaft 80 through the second transmission device 60, thereby being able to drive the right wheel W2 to rotate.

[0069] In a more preferred power assembly of the present application, a motor controller 2 can also be mounted on the intermediate housing 1, the motor controller 2 being mounted on the longitudinal side of the intermediate housing 1, while a terminal mounting cavity 19 is formed above the first mounting cavity 13 between the first motor 3 and the second motor 4, the upper side opening of the terminal mounting cavity 19 being formed with a first mounting surface 19a and a second mounting surface 19b which are at an inverted V-shaped included angle with each other, thereby reducing or avoiding the occupation of the space above the first mounting cavity, saving the Z-direction space in the vehicle, and being more compact and having a high space utilization rate compared with the conventional arrangement, and thus being conveniently arranged in the vehicle. In the view shown in Figure 5 and Figure 9 In the view shown in

[0070] In the view shown in Figure 9As shown, since the motor controller 2 is installed above the longitudinal side of the intermediate box 1, the first mounting surface 19a for the first half cover plate 15 and the second mounting surface 19b for the second half cover plate 16 are arranged at an angle with respect to each other, thereby ingeniously solving the arrangement problem of the terminal block and making the overall structure more compact and effectively reducing the occupation of the Z-direction space.

[0071] Through the above arrangement, on the longitudinal side of the first mounting cavity 13 connected to the second mounting cavity 14, the intermediate box 1 is formed as a recess structure above the second mounting cavity 14, thereby the motor controller 2 can be installed at least partially in the recess structure, so as to avoid or reduce the occupation of the height space. Among them, at least part of the motor controller 2 can be located on the longitudinal side of the first mounting cavity 13, and at least part of the motor controller 2 is located above the second mounting cavity 14. In this case, the other longitudinal side (right side in the perspective view) of the intermediate box 1 can be arranged with cooling components such as electronic oil pump 9 and plate heat exchanger 10 for cooling the related components in the double-motor assembly. Figure 5 In the preferred embodiment shown, the electronic oil pump 9 is installed on the box part corresponding to the second mounting cavity 14 and located below the first mounting cavity 13, thereby the surrounding space can be fully utilized; while the plate heat exchanger 10 is installed on the box part corresponding to the first mounting cavity 13, thereby being located at a relatively high position, facilitating efficient heat exchange. Figure 5

[0072] Among them, the first mounting seat 11 and the second mounting seat 12 can be provided on the intermediate box 1 at different height positions, just as Figures 6 to 9 As shown in the middle, the height of the first mounting seat 11 is higher than that of the second mounting seat 12, thereby the motor controller 2 can be installed on the intermediate box 1 in a relatively horizontal inclination manner by using the first mounting seat 11 and the second mounting seat 12. And by providing multiple mounting points at different height positions by the first mounting seat 11 and the second mounting seat 12, the installation accuracy of the motor controller 2 on the intermediate box 1 can be effectively ensured.

[0073] As Figures 6 to 8 ​As shown, in a preferred embodiment, the first mounting seat 11 can be integrally formed with the intermediate box 1, for example, integrally cast. More specifically, the first mounting seat 11 extends protrudingly from the lateral sides of the box portion of the intermediate box 1 that defines the first mounting cavity 13, thereby providing a relatively high mounting point. The second mounting seat 12 can be connected to the lateral sides of the box portion of the intermediate box 1 that defines the second mounting cavity 14 by fasteners such as bolts, thereby providing a mounting point for the motor controller 2 at a relatively low position. With this arrangement, a mounting base that accommodates the installation needs of the motor controller 2 can be provided without significantly increasing the difficulty of casting, so that the motor controller 2 can be stably fixed even when arranged above the longitudinal side of the intermediate box 1, and it is convenient to arrange so that the bolts for fixing the motor controller 2 perform the fastening operation from top to bottom.

[0074] As previously mentioned, in the case where the first mounting cavity 13 and the second mounting cavity 14 are formed, the motor controller 2 can be mounted into the recessed structure above the second mounting cavity 14. With the provision of the first mounting seat 11 and the second mounting seat 12, the motor controller 2 can be mounted with its bottom surface spaced apart from the outer wall surface of the second mounting cavity 14, thereby having a certain space between the bottom surface of the motor controller 2 and the intermediate box 1. Thus, in use, when the motor controller 2 expands due to heat, the space can provide an expansion allowance relative to the intermediate box 1, while also allowing air flow through the space for cooling.

[0075] In addition, other control / sensing components are also generally provided on the power assembly, which protrude from the surface of the intermediate box 1, and the above-mentioned space between the motor controller 2 and the intermediate box 1 provides a clearance space for the protruding portions of these components. Referring to Figure 2 、 Figure 3 and Figure 6 As shown, the cavity wall of the second mounting cavity 14 is provided with a locking mechanism 7 and a gear position sensor 8 that protrude from the outer wall surface thereof to extend into the space between the motor controller 2 and the second mounting cavity 14, whereby the power assembly integrates a relatively large number of functional components in a relatively compact structure and neat appearance, facilitating intelligent control.

[0076] As shown in Figures 2 to 5 , in the power assembly provided by the present application, the motor controller 2 can be arranged to adopt a special flat structure. Among them, it has an electric control upper cover, which can be formed with a downwardly recessed arc-shaped structure 21, thereby not only reducing the occupation of the Z-direction space, but also being able to improve the upper cover modal through the arc-shaped structure 21.

[0077] In the power assembly, the first motor 3 and the second motor 4 rotate relatively independently, so a higher lateral mode is required. To this end, a large number of lateral reinforcing ribs can be arranged on the intermediate case 1, so that the intermediate case 1 has a higher NVH performance; in addition, the intermediate case 1 is formed in an inclined shape in the longitudinal direction and has a recess structure, and in order to improve the longitudinal mode and the NVH performance, a plurality of reinforcing ribs extending in the longitudinal direction can also be formed on the intermediate case 1.

[0078] The application also provides a vehicle provided with the power assembly.

[0079] The preferred embodiments of the application are described in detail above with reference to the drawings, but the application is not limited thereto. Various simple modifications can be made to the technical solutions of the application within the technical concept of the application, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the application will not describe various possible combination manners again. However, these simple modifications and combinations should also be regarded as the disclosed content of the application and belong to the protection scope of the application.

Claims

1. A powertrain, characterized by, The utility model relates to a kind of electric vehicle power distribution box, including: Intermediate box (1); First motor (3) and second motor (4), the first motor (3) and the second motor (4) are connected to the transverse two sides of the intermediate box (1) relative to each other; Wherein, the intermediate box (1) is equipped with terminal block installation cavity (19) inside, the terminal block installation cavity (19) is located between the first motor and the second motor and is located above the motor output shaft of the first motor and the motor output shaft of the second motor; The upper side of the terminal block installation cavity (19) is formed with first upper half opening, second upper half opening, first half cover plate (15) and second half cover plate (16), the first upper half opening and the second upper half opening are longitudinally adjacent, the first half cover plate (15) is closed by cooperating with the first installation surface (19a) of the first upper half opening to the first upper half opening, the second half cover plate (16) is closed by cooperating with the second installation surface (19b) of the second upper half opening to the second upper half opening, the second installation surface (19b) is higher than the first installation surface (19a).

2. The powertrain of claim 1, wherein, The motor output shaft of the first motor (3) and the motor output shaft of the second motor (4) are parallel or coaxial with each other.

3. The powertrain of claim 1, wherein, The transverse two sides of the intermediate box (1) are respectively connected with first motor box (30) and second motor box (40), and the first motor (3) and the second motor (4) are respectively installed into the first motor box (30) and the second motor box (40).

4. The powertrain of claim 1, wherein, The first installation surface (19a) and the second installation surface (19b) are arranged at an angle to each other.

5. The powertrain of claim 4, wherein, The second installation surface (19b) is parallel to the horizontal plane, and / or the first installation surface (19a) is arranged parallel to the transverse direction and inclined to the longitudinal direction.

6. The powertrain of claim 1, wherein, The first half cover plate (15) is provided with a power distribution connector (151), which includes a first electrical connection part facing the inside of the terminal block installation cavity (19) and a second electrical connection part facing the outside of the terminal block installation cavity (19).

7. The powertrain of claim 1, wherein, The terminal block installation cavity (19) is installed with three-phase terminal block (5) and step-up charging terminal block (6), Or, The terminal block installation cavity (19) is installed with an integrated terminal block, which is provided with three-phase terminal and step-up charging terminal.

8. The powertrain of claim 1, wherein, A cross beam (17) is formed between the first upper half opening and the second upper half opening, and the first half cover plate (15) and the second half cover plate (16) are separately arranged. Or The first upper half opening and the second upper half opening are communicated, and the first half cover plate (15) and the second half cover plate (16) are integrally arranged.

9. The powertrain of claim 1, wherein, The transverse two sides of the terminal block installation cavity (19) are respectively formed with first transverse opening and second transverse opening (19c), and the electric wire of the first motor (3) is suitable for entering the terminal block installation cavity (19) through the first transverse opening, and the electric wire of the second motor (4) is suitable for entering the terminal block installation cavity (19) through the second transverse opening (19c).

10. The powertrain of claim 1, wherein, A longitudinal side of the terminal block mounting cavity (19) is formed with a longitudinal opening (19d) and a third cover plate (18) for closing the longitudinal opening (19d).

11. The powertrain of claim 1, wherein, The first motor (3) and the second motor (4) are connected to a transmission device and a power output shaft, and the motor output shafts of the first motor (3) and the second motor (4) transmit power to the power output shaft through the transmission device. The intermediate box (1) is further provided with a first mounting cavity (13) and a second mounting cavity (14), the first mounting cavity (13) is located between the first motor (3) and the second motor (4) and below the terminal block mounting cavity (19), the second mounting cavity (14) is located below the longitudinal side of the first mounting cavity (13), the motor output shafts of the first motor (3) and the second motor (4) extend into the first mounting cavity (13) respectively, and at least part of the power output shaft is installed in the second mounting cavity (14).

12. The powertrain of claim 11, wherein, The first mounting cavity (13) includes a first left half mounting cavity (131) and a first right half mounting cavity (132), the second mounting cavity (14) includes a second left half mounting cavity (141) and a second right half mounting cavity (142), the transmission device includes a first transmission device (50) and a second transmission device (60), the power output shaft includes a first power output shaft (70) and a second power output shaft (80), The first transmission device (50) is installed in the first left half mounting cavity (131) and the second left half mounting cavity (141), the second transmission device (60) is installed in the first right half mounting cavity (132) and the second right half mounting cavity (142), At least part of the first power output shaft (70) is installed in the second left half mounting cavity (141), and at least part of the second power output shaft (80) is installed in the second right half mounting cavity (142), The motor output shaft of the first motor (3) extends into the first left half mounting cavity (131) and transmits power to the first power output shaft (70) through the first transmission device (50), and the motor output shaft of the second motor (4) extends into the first right half mounting cavity (132) and transmits power to the second power output shaft (80) through the second transmission device (60).

13. The powertrain of claim 12, wherein, The intermediate box (1) is further provided with a longitudinally extending intermediate partition plate (1a), the first left half mounting cavity (131) and the first right half mounting cavity (132) are separated by the intermediate partition plate (1a), and the second left half mounting cavity (141) and the second right half mounting cavity (142) are separated by the intermediate partition plate (1a).

14. The powertrain of claim 11, wherein, The motor controller (2) is further provided, the motor controller (2) is installed on the intermediate box (1), and at least part of the motor controller (2) is located on the longitudinal side of the first mounting cavity (13), and at least part of the motor controller (2) is located above the second mounting cavity (14).

15. The powertrain of claim 14, wherein, The motor controller (2) is installed on the intermediate box (1) in a slanting manner relative to a horizontal plane.

16. The powertrain of claim 15, wherein, The motor controller (2) is installed on the intermediate box (1) through a first mounting seat (11) and a second mounting seat (12) provided on the intermediate box (1), wherein the first mounting seat (11) and the second mounting seat (12) are located at different height positions.

17. The powertrain of claim 16, wherein, The first mounting seat (11) is integrally formed with the intermediate box (1) and extends outward from both lateral sides of a box part of the intermediate box (1) in which the first mounting cavity (13) is defined; and / or The second mounting seat (12) is fixedly connected with the intermediate box (1) and extends outward from both lateral sides of a box part of the intermediate box (1) in which the second mounting cavity (14) is defined.

18. The powertrain of claim 16, wherein, The first mounting seat (11) and the second mounting seat (12) are arranged such that a bottom surface of the motor controller (2) is spaced apart from an outer wall surface of the second mounting cavity (14).

19. The powertrain of claim 14, wherein, The motor controller (2) has an electric control upper cover, which is formed with a downwardly recessed arc-shaped structure (21).

20. The powertrain of claim 1, wherein, A plurality of lateral reinforcing ribs and / or a plurality of longitudinal reinforcing ribs are formed on the outer side wall of the intermediate box (1).

21. A vehicle characterized by The vehicle is provided with a power assembly according to any one of claims 1 to 20.

Images