Motor driving assembly and vehicle

Abstract

The utility model relates to the technical field of motor driving assemblies, and discloses a motor driving assembly and a vehicle, the motor driving assembly comprises a driving motor and a motor controller, the driving motor comprises a front end cover, a motor shell and a rear end cover which are connected in sequence, and the motor controller is fixedly arranged on the rear end cover in the axial direction of the driving motor; the motor controller is provided with a liquid inlet and a first cooling flow channel, the liquid inlet is communicated with the first cooling flow channel, the front end cover is provided with a liquid outlet and a first flow channel communicated with the liquid outlet, a second flow channel is arranged in the motor shell, a third flow channel is arranged in the rear end cover, the first flow channel is communicated with the second flow channel, and the second flow channel is communicated with the third flow channel. The first cooling flow channel is communicated with the third flow channel, and before the front end cover and the motor shell are fixed, the front end cover can rotate relative to the motor shell in the axial direction of the motor shell so as to adjust the position of the liquid outlet. Therefore, the design requirements of light weight, miniaturization and integration are met, and the cooling efficiency and the applicability of the motor driving assembly are improved.

Description

Technical Field

[0001] This application relates to the field of electric motor drive assembly technology, and more particularly to an electric motor drive assembly and a vehicle. Background Technology

[0002] With the rapid development of new energy vehicles, miniaturization, lightweighting, and integration have become the mainstream directions for the development of electric drive systems for new energy vehicles.

[0003] The electric drive system mainly consists of the drive motor and the motor controller. As a core component of new energy vehicles, its traditional separate structure has gradually revealed a series of drawbacks, such as large size, complex wiring, low system reliability, and high cost, making it difficult to meet the needs of modern development. If the motor controller and drive motor are combined into one, the space occupied by the electric drive system in the vehicle can be effectively reduced, which is conducive to reducing manufacturing costs and improving the reliability of the drive control system.

[0004] In related technologies, the common integration method is to mount the motor controller directly above the drive motor. This method cannot effectively reduce the overall size of the assembly and still results in a bulky structure. Furthermore, both the motor controller and the drive motor generate a significant amount of heat during operation, thus affecting their performance. Therefore, how to effectively integrate the motor drive assembly, reduce its size and weight, and efficiently cool the drive motor and motor controller has become a major problem that urgently needs to be solved. Utility Model Content

[0005] This application provides an electric motor drive assembly and a vehicle, which solves the problems of difficulty in achieving lightweight, miniaturization and integration of electric motor drive assemblies. At the same time, it achieves efficient cooling of the drive motor and motor controller, which is beneficial to improving the performance of the motor controller and drive motor.

[0006] To achieve the above objectives, the main technical solutions adopted in this application include:

[0007] In a first aspect, embodiments of this application provide a motor drive assembly, including:

[0008] A drive motor, comprising a front cover, a motor housing, and a rear cover connected in sequence;

[0009] The motor controller is fixed to the rear end cover along the axis of the drive motor.

[0010] The motor controller has a liquid inlet and a first cooling channel, the liquid inlet is connected to the first cooling channel, the front cover has a liquid outlet and a first channel connected to the liquid outlet, the motor housing has a second channel, the rear cover has a third channel, the first channel is connected to the second channel, the second channel is connected to the third channel, and the first cooling channel is connected to the third channel. Before the front cover is fixed to the motor housing, the front cover can rotate relative to the motor housing along the axial direction of the motor housing to adjust the position of the liquid outlet.

[0011] The motor drive assembly proposed in this application integrates the drive motor and the motor controller into a single assembly structure along the axial direction of the drive motor. This helps to further reduce the space occupied by the motor drive assembly in the vehicle and also helps to reduce the weight of the motor drive assembly, meeting the requirements of lightweight, miniaturization and integration design. At the same time, the connection between the first cooling channel and the second cooling channel enables efficient cooling of the drive motor and the motor controller, which helps to improve the performance of the motor controller and the drive motor. Furthermore, by adjusting the position of the liquid outlet of the front cover, the cooling requirements of different installation positions can be met, which helps to improve the applicability of the motor drive assembly.

[0012] Optionally, the motor controller includes: a controller housing and a control board. Along the axial direction of the drive motor, the controller housing is fixed to the rear end cover and together with the rear end cover defines a first mounting cavity, and the control board is disposed in the first mounting cavity.

[0013] With this configuration, the controller housing and the rear cover together define the first mounting cavity, reducing the housing volume and saving installation space for the motor drive assembly.

[0014] Optionally, the motor controller further includes a low-voltage connector electrically connected to the control board, and at least a portion of the low-voltage connector is located outside the controller housing.

[0015] This design facilitates the adjustment of the low-voltage connector's orientation to suit different vehicle models, and also makes it easier to plug and unplug the low-voltage connector from the low-voltage wiring harness.

[0016] Optionally, the motor controller further includes a power module, which is disposed in the first mounting cavity and along the axial direction of the drive motor, and is located on the side of the control board near the controller housing.

[0017] This configuration allows for a more compact arrangement of the various modules within the motor controller, which helps reduce the overall size of the motor controller and thus improves its power density.

[0018] Optionally, the controller housing has a liquid inlet, and at least a portion of the first cooling channel is disposed within the controller housing.

[0019] With this configuration, when the coolant flows into the first cooling channel from the inlet, the power module and other components in the first mounting cavity can exchange heat with the coolant in the controller housing, thereby cooling the heat-generating components and improving the overall performance of the motor controller.

[0020] Optionally, along the axial direction of the drive motor, the front cover, the motor housing, and the rear cover are connected in sequence and together define a second mounting cavity, in which a stator and rotor module is fixed.

[0021] In this way, the motor housing can be adjusted along the axial length of the stator and rotor modules, while the front and rear covers can remain unchanged, thereby maximizing the sharing of motor drive assembly components.

[0022] Optionally, the motor drive assembly further includes: a liquid inlet pipe, which is connected to a liquid inlet and is movably disposed on the motor controller.

[0023] The position of the liquid inlet pipe can be adjusted to adapt to the pipeline layout requirements of different vehicle models, thus improving the applicability of the motor drive assembly.

[0024] Optionally, the motor drive assembly further includes: a liquid outlet pipe, which is connected to a liquid outlet and is movably disposed on the front end cover.

[0025] The position of the liquid outlet pipe can be adjusted to adapt to the pipeline layout requirements of different vehicle models, thus improving the applicability of the motor drive assembly.

[0026] Optionally, the rear end cover has multiple mounting portions arranged circumferentially around the rear end cover, which are used for fixed connection to the vehicle's rear axle or vehicle frame.

[0027] Secondly, embodiments of this application provide a vehicle including the motor drive assembly described in the first aspect embodiment.

[0028] By flexibly adjusting the positions of the mounting section, inlet pipe, and outlet pipe, the motor drive assembly can be adapted to different vehicle models and different installation directions, thus improving the applicability of the motor drive assembly.

[0029] The vehicle proposed in this application embodiment, by incorporating the aforementioned motor drive assembly, integrates the drive motor and motor controller into a single assembly structure along the axial direction of the drive motor. This facilitates further reduction of the space occupied by the motor drive assembly in the vehicle and also helps to reduce the weight of the motor drive assembly, meeting the requirements of lightweight, miniaturization, and integration design. Simultaneously, the connection between the first and second cooling channels enables efficient cooling of the drive motor and motor controller, which is beneficial to improving the performance of the motor controller and drive motor. Furthermore, by adjusting the position of the liquid outlet on the front cover, the cooling requirements of different installation positions can be met, which is beneficial to improving the applicability of the motor drive assembly. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 A schematic diagram from a first perspective of the motor drive assembly provided in an embodiment of this application;

[0032] Figure 2 This is a second-view front view of the motor drive assembly provided in an embodiment of this application;

[0033] Figure 3 Exploded views of the controller housing, control board, and protective cover provided in the embodiments of this application;

[0034] Figure 4 A schematic diagram showing the connection between the control board and the low-voltage connector provided in an embodiment of this application;

[0035] Figure 5 This is a schematic diagram of the motor drive assembly provided in the embodiments of this application;

[0036] Figure 6 A schematic diagram from a third-person perspective of the motor drive assembly provided in an embodiment of this application;

[0037] Figure 7 This is a schematic diagram of the motor drive assembly provided in an embodiment of this application from a fourth perspective.

[0038] [Explanation of Labels in the Attached Image]

[0039] Motor drive assembly 100;

[0040] Drive motor 1; rear end cover 11; mounting part 111; motor housing 12; front end cover 13;

[0041] 2. Motor controller; 21. Controller housing; 22. Control board; 23. Low-voltage connector; 24. Protective cover;

[0042] Inlet pipe 3;

[0043] 4. Liquid outlet tube. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0046] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0049] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0050] It should be noted that with the rapid development of new energy vehicles, miniaturization, lightweighting, and integration have become the mainstream directions for the development of electric drive systems for new energy vehicles.

[0051] The electric drive system, as a core component of new energy vehicles, mainly includes the drive motor 1 and the motor controller 2. Different vehicle models employ different layout strategies for the drive motor 1. For example, due to their different uses, the motor layout environments differ between new energy passenger vehicles and new energy commercial vehicles. New energy passenger vehicles prioritize acceleration performance, so the drive motor 1 is often located on the front subframe. New energy commercial vehicles prioritize carrying capacity, so the drive motor 1 is often located on the rear axle. The motor controller 2 is typically mounted on the vehicle body frame and connected to the drive motor 1 via wiring harnesses.

[0052] The traditional separate layout of drive motor 1 and motor controller 2 has revealed a series of drawbacks, including large size, complex wiring, low system reliability, and high cost, making it difficult to meet the needs of modern development. Integrating the motor controller 2 and drive motor 1 into a single unit can effectively reduce the space occupied by the motor drive assembly 100 in the vehicle, thereby reducing manufacturing costs and improving the reliability of the drive control system.

[0053] Currently, integrated motor drive assembly 100 has become the mainstream for new energy passenger vehicles, and the motor controller 2 is often arranged directly above the drive motor 1 (above the side wall of the motor housing 12) to reduce the impact of vibration. However, the above arrangement cannot effectively reduce the volume of the assembly and still results in a bulky structure. For new energy commercial vehicles, due to more stringent operating conditions and a more confined space around the rear axle than the front compartment, it is necessary to further integrate the motor drive assembly 100 to reduce its volume and weight. Secondly, both the motor controller 2 and the drive motor 1 generate a lot of heat during operation, which affects their performance. Therefore, how to effectively integrate them, reduce the volume and weight of the motor drive assembly 100, and efficiently cool the drive motor 1 and the motor controller 2 has become a major problem that urgently needs to be solved.

[0054] Based on this, this application proposes a motor drive assembly 100, which integrates the drive motor 1 and the motor controller 2 into a single assembly structure along the axial direction of the drive motor 1. This is beneficial for further reducing the space occupied by the motor drive assembly 100 in the vehicle and also for reducing the weight of the motor drive assembly 100, thus meeting the requirements of lightweight, miniaturization and integration design. At the same time, the connection between the first cooling channel and the second cooling channel enables efficient cooling of the drive motor 1 and the motor controller 2, which is beneficial for improving the performance of the motor controller 2 and the drive motor 1. Furthermore, by adjusting the position of the liquid outlet of the front cover 13, the cooling requirements of different installation positions can be met, which is beneficial for improving the applicability of the motor drive assembly 100.

[0055] The motor drive assembly 100 and vehicle according to embodiments of this application are described below with reference to the accompanying drawings.

[0056] like Figures 1-7 As shown, the motor drive assembly 100 according to the first aspect embodiment of this application includes: a drive motor 1 and a motor controller 2. The drive motor 1 includes a front end cover 13, a motor housing 12 and a rear end cover 11 connected in sequence. Along the axial direction of the drive motor 1, the motor controller 2 is fixed to the rear end cover 11. The motor controller 2 has a liquid inlet and a first cooling channel. The liquid inlet communicates with the first cooling channel. The front end cover 13 has a liquid outlet and a first channel communicating with the liquid outlet. The motor housing 12 has a second channel, and the rear end cover 11 has a third channel. The first channel communicates with the second channel, the second channel communicates with the third channel, and the first cooling channel communicates with the third channel. Before the front end cover 13 is fixed to the motor housing 12, the front end cover 13 is rotatable relative to the motor housing 12 along the axial direction of the motor housing 12 to adjust the position of the liquid outlet.

[0057] Specifically, this application uses the electric motor drive assembly 100 used in a new energy commercial vehicle as an example for illustration, such as... Figure 1 As shown, an output shaft is provided at one end along the axial direction of the drive motor 1, and a rear end cover 11 is provided at the other end. The output shaft extends along the axial direction of the drive motor 1 and is used to assemble with the input shaft of the reducer. In some embodiments of this application, the motor controller 2 is fixedly connected to the rear end cover 11 along the axial direction of the drive motor 1, thereby realizing the reuse of the rear end cover 11 during the arrangement of the motor controller 2. With this arrangement, compared with the traditional separate arrangement structure of the drive motor 1 and the motor controller 2, the connecting parts between the traditional separate structure of the motor controller 2 and the drive motor 1 are removed, effectively integrating the motor controller 2 and the drive motor 1 into a single assembly structure. At the same time, the integrated design of the motor controller 2 and the drive motor 1 along the axial direction of the drive motor 1 can further reduce the space occupied by the motor drive assembly 100 in the whole vehicle, which is conducive to reducing the weight of the motor drive assembly 100 and meeting the requirements of lightweight, miniaturization and integration design.

[0058] Furthermore, the motor controller 2 has a liquid inlet and a first cooling channel communicating with the liquid inlet inside the motor controller 2. The front cover 13 has a liquid outlet and a first channel communicating with the liquid outlet inside the front cover 13. The motor housing 12 has a second channel inside, and the rear cover 11 has a third channel inside. The first, second, and third channels are sequentially connected to form the second cooling channel. It can be understood that when the motor controller 2 is fixedly installed on the rear cover 11 of the drive motor 1, the first cooling channel of the motor controller 2 is connected to the third channel. With this configuration, when cooling of the motor drive assembly 100 is required... At this time, the coolant flows into the first cooling channel from the inlet of the motor controller 2. The coolant in the first cooling channel can cool the motor controller 2. Then the coolant flows into the third channel from the first cooling channel. That is, after the coolant flows in from the inlet of the motor controller 2, the coolant flows through the controller housing 21, the rear cover 11, the motor housing 12, and the front cover 13 in sequence, thereby forming a complete cooling circuit on the outer surface of the motor drive assembly 100. In this process, the connection between the first cooling channel and the second cooling channel is conducive to better circulation of the coolant, realizing efficient cooling of the drive motor 1 and the motor controller 2.

[0059] Furthermore, before the front cover 13 is fixed to the motor housing 12, the front cover 13 can be rotated along the axial direction of the motor housing 12 to adjust the position of the liquid outlet. It should be noted that when rotating and adjusting the front cover 13, it is necessary to ensure that the first flow channel of the front cover 13 is connected to the second flow channel of the motor housing 12 before fixing the front cover 13 to the motor housing 12. This satisfies the connection of the second cooling flow channel and allows for adjustment of the position of the liquid outlet of the front cover 13 to meet the cooling requirements of different installation positions, thereby improving the applicability of the motor drive assembly 100.

[0060] For example, during the installation of the front cover 13, the position of the liquid outlet can be adjusted by rotating the front cover 13 so that the liquid outlet is always located on the top of the motor drive assembly 100, thus avoiding the problem of trapped air in the second cooling channel.

[0061] In summary, according to the first aspect embodiment of this application, the motor drive assembly 100 integrates the drive motor 1 and the motor controller 2 into a single assembly structure along the axial direction of the drive motor 1. This is beneficial for further reducing the space occupied by the motor drive assembly 100 in the vehicle and also for reducing the weight of the motor drive assembly 100, thus meeting the requirements of lightweight, miniaturization, and integration design. At the same time, the connection between the first cooling channel and the second cooling channel enables efficient cooling of the drive motor 1 and the motor controller 2, which is beneficial for improving the performance of the motor controller 2 and the drive motor 1. Furthermore, by adjusting the position of the liquid outlet of the front cover 13, the cooling requirements of different installation positions can be met, which is beneficial for improving the applicability of the motor drive assembly 100.

[0062] In some embodiments of this application, such as Figure 1 and Figure 3 As shown, the motor controller 2 includes a controller housing 21 and a control board 22. Along the axial direction of the drive motor 1, the controller housing 21 is fixed to the rear end cover 11 and together with the rear end cover 11 defines a first mounting cavity. The control board 22 is disposed in the first mounting cavity.

[0063] Specifically, such as Figure 3 As shown, the controller housing 21 has a semi-enclosed structure. Along the axial direction of the drive motor 1, the controller housing 21 is fixedly mounted on the rear end cover 11 of the drive motor 1. The fixing and mounting methods include, but are not limited to, bolt connection and snap-fit. The controller housing 21 and the rear end cover 11 together define a first mounting cavity. The control board 22 is fixedly mounted in the first mounting cavity. With this configuration, the controller housing 21 and the rear end cover 11 together define the first mounting cavity, reducing the housing volume and saving installation space for the motor drive assembly 100. Optionally, refer to... Figure 3 As shown, a protective cover 24 is provided on the right side of the control board 22. The control board 22 is located on the protective cover 24, and the protective cover 24 is fixedly installed in the first mounting cavity. Thus, the protective cover 24 can provide a certain degree of protection for the control board 22, preventing the vibration of the drive motor 1 from causing abnormalities in the control board 22, so that the control board 22 can be used in the harsh working conditions of commercial vehicles.

[0064] Furthermore, the control board 22 can be constructed as an integrated circuit board, that is, multiple sets of electrical components are integrated on the board. This configuration helps to reduce the use of redundant components, thereby further realizing the lightweight design of the motor drive assembly 100.

[0065] In some embodiments of this application, such as Figure 4 , Figure 6 and Figure 7 As shown, the motor controller 2 also includes a low-voltage connector 23, which is electrically connected to the control board 22, and at least a portion of the low-voltage connector 23 is located outside the controller housing 21.

[0066] Specifically, the low-voltage connector 23 of the motor controller 2 is at least partially disposed on the outside of the controller housing 21. The low-voltage connector 23 includes a low-voltage conversion circuit and a connector terminal. The connector terminal is a joint connecting the low-voltage wiring harness and the motor controller. The connector terminal is a connector used to conduct current and signals. The connection and disconnection between the low-voltage wiring harness and the motor controller are realized by plugging and unplugging. In some embodiments of this application, one end of the low-voltage connector 23 (low-voltage conversion circuit) is electrically connected to the control board 22, and at least part of the other end of the low-voltage connector 23 (with connector terminal) is disposed outside the controller housing 21. It can be understood that the connector terminal of the low-voltage connector 23 is completely exposed. This arrangement facilitates the adjustment of the direction of the low-voltage connector 23 to suit different vehicle models, and also facilitates the plugging and unplugging connection between the low-voltage connector 23 and the low-voltage wiring harness.

[0067] In some embodiments of this application, the motor controller 2 further includes a power module, which is disposed in the first mounting cavity and along the axial direction of the drive motor 1, and is located on the side of the control board 22 near the controller housing 21.

[0068] Specifically, the power module and control board 22 inside the motor controller 2 are also arranged along the axial direction of the drive motor 1. The power module is located on the side of the control board 22 close to the controller housing 21. This arrangement allows the various modules inside the motor controller 2 to be arranged more compactly, which helps to reduce the overall volume of the motor controller 2 and thus improves the power density of the motor controller 2.

[0069] It should be noted that the power module can be adapted to different vehicle models by changing the internal IGBT model to expand its overcurrent capability. The selection of IGBTs for power modules is a common technology and will not be discussed further here.

[0070] In some embodiments of this application, the controller housing 21 has a liquid inlet, and at least a portion of the first cooling channel is disposed within the controller housing 21. That is, the controller housing 21 has a first cooling channel, and the first cooling channel is connected to the liquid inlet on the controller housing 21. With this arrangement, when coolant flows into the first cooling channel from the liquid inlet, components such as the power module in the first mounting cavity can exchange heat with the coolant in the controller housing 21, thereby cooling the heat-generating components and improving the overall performance of the motor controller 2.

[0071] It should be noted that the first cooling channel may also include a cooling pipe disposed in the first mounting cavity. Optionally, the cooling pipe is disposed around or close to components such as the power module, which can further improve the cooling effect on the heat-generating components and help to further improve the performance of the motor controller 2.

[0072] In some embodiments of this application, such as Figure 1 and Figure 2 As shown, along the axial direction of the drive motor 1, the front cover 13, the motor housing 12, and the rear cover 11 are connected in sequence and together define the second mounting cavity, in which the stator and rotor modules are fixed.

[0073] Specifically, the motor drive assembly 100 adopts a modular design, including two main modules: a motor controller 2 and a drive motor 1. The two main modules are connected sequentially along the axial direction of the drive motor 1. Each module is further divided into different smaller modules. Furthermore, the drive motor 1 also includes a motor housing 12 and a front cover 13. Along the axial direction of the drive motor 1, the front cover 13, the motor housing 12, and the rear cover 11 are connected sequentially to jointly define a second mounting cavity. The connection method includes, but is not limited to, bolt connection. A stator and rotor module is fixedly installed in the second mounting cavity, and the rotor is fixedly connected to the output shaft.

[0074] It should be noted that the motor drive assembly 100 can adopt different configurations, for example, such as Figure 5 As shown, three combination schemes are illustrated. Motor drive assembly A includes a controller housing 21, a power module, a control board 22, a rear end cover 11, a stator / rotor module, and a first front end cover A arranged sequentially along the axis of drive motor 1. Motor drive assembly B includes a controller housing 21, a power module, a control board 22, a rear end cover 11, a stator / rotor module, and a second front end cover B arranged sequentially along the axis of drive motor 1. In other words, the motor drive assembly 100 can adjust the first front end cover A to the second front end cover B as needed to meet the usage requirements of different vehicle models. Furthermore, when conditions permit, the front end cover 13 can also be removed. Please refer to [reference needed] for details. Figure 5 As shown, the motor drive assembly C includes a controller housing 21, a power module, a control board 22, a rear cover 11, a stator and rotor module, and a reducer arranged sequentially along the axis of the drive motor 1. In other words, the motor drive assembly C can further integrate a reducer to better suit different vehicle models.

[0075] Understandably, the motor housing 12 can be adjusted along the axial length of the stator and rotor modules, but the front cover 13 and the rear cover 11 can remain unchanged, thereby maximizing the sharing of parts in the motor drive assembly 100. At the same time, the various modules use electrical and mechanical interfaces of the same standard, thereby enabling quick and easy disassembly and assembly, which is conducive to improving the convenience of assembly installation and after-sales maintenance.

[0076] In some embodiments of this application, such as Figure 1 , Figure 6 and Figure 7As shown, the motor drive assembly 100 also includes: a liquid inlet pipe 3, which is connected to a liquid inlet and is movably disposed on the motor controller 2.

[0077] Specifically, the liquid inlet of the controller housing 21 is connected to the liquid inlet pipe 3. The liquid inlet pipe 3 is movably mounted on the controller housing 21 of the motor controller 2. For example, the liquid inlet pipe 3 can rotate relative to the controller housing 21, thereby adjusting the orientation of the liquid inlet pipe 3 to better adapt to the pipeline layout requirements of different vehicle models and improve the applicability of the motor drive assembly 100.

[0078] In some embodiments of this application, such as Figure 1 and Figure 2 As shown, the motor drive assembly 100 also includes: a liquid outlet pipe 4, which is connected to a liquid outlet and is movably disposed on the front end cover 13.

[0079] Specifically, the liquid outlet of the front cover 13 is connected to the liquid outlet pipe 4, and the liquid outlet pipe 4 is movably disposed on the front cover 13. For example, the liquid outlet pipe 4 can rotate relative to the front cover 13, thereby adjusting the orientation of the outlet of the liquid outlet pipe 4, which is convenient to adapt to the pipeline layout requirements of different vehicle models and improves the applicability of the motor drive assembly 100.

[0080] In some embodiments of this application, such as Figure 6 and Figure 7 As shown, the rear end cover 11 has a plurality of mounting portions 111, which are arranged at intervals along the circumference of the rear end cover 11. The mounting portions 111 are used for fixed connection with the rear axle of the vehicle or the vehicle frame.

[0081] Specifically, to facilitate the installation of the motor drive assembly 100, a plurality of mounting portions 111 are provided on the rear end cover 11, arranged circumferentially along the rear end cover 11. The mounting portions 111 are used for fixed connection with the vehicle's rear axle or vehicle frame. For example, Figure 6 and Figure 7 Two installation unit 111 layout schemes were demonstrated. Figure 6 The two mounting sections 111 are located near the rear axle of the vehicle. Figure 6 The two mounting parts 111 on the upper part are suitable for mounting the drive motor 1 on the rear axle of the vehicle. Figure 7 The three mounting parts 111 are arranged close to the vehicle frame. Figure 7 The mounting part 111 is suitable for mounting the drive motor 1 on the vehicle frame. In this way, by flexibly adjusting the position of the mounting part 111, the motor drive assembly 100 can be adapted to different vehicle models and different mounting directions, thus improving the applicability of the motor drive assembly 100.

[0082] The vehicle according to a second aspect embodiment of this application includes the motor drive assembly 100 of the first aspect embodiment.

[0083] According to the second aspect of the vehicle embodiment of this application, by providing the above-mentioned motor drive assembly 100, the drive motor 1 and the motor controller 2 are integrated into an assembly structure along the axial direction of the drive motor 1. This is beneficial to further reduce the space occupied by the motor drive assembly 100 in the whole vehicle, and also beneficial to reduce the weight of the motor drive assembly 100, thus meeting the requirements of lightweight, miniaturization and integration design. At the same time, the first cooling channel and the second cooling channel are connected to achieve efficient cooling of the drive motor 1 and the motor controller 2, which is beneficial to improve the performance of the motor controller 2 and the drive motor 1. Furthermore, by adjusting the position of the liquid outlet of the front cover 13, different cooling requirements can be met, which is beneficial to improving the applicability of the motor drive assembly 100.

[0084] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0085] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0086] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

[0087] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A motor drive assembly, characterized in that, include: A drive motor, the drive motor comprising a front end cover, a motor housing, and a rear end cover connected in sequence; A motor controller is fixed to the rear end cover along the axial direction of the drive motor. The motor controller has a liquid inlet and a first cooling channel, the liquid inlet being connected to the first cooling channel. The front end cover has a liquid outlet and a first channel connected to the liquid outlet. The motor housing has a second channel, and the rear end cover has a third channel. The first channel is connected to the second channel, the second channel is connected to the third channel, and the first cooling channel is connected to the third channel. Before the front end cover is fixed to the motor housing, the front end cover is rotatable relative to the motor housing along the axial direction of the motor housing to adjust the position of the liquid outlet.

2. The motor drive assembly according to claim 1, characterized in that, The motor controller includes a controller housing and a control board. Along the axial direction of the drive motor, the controller housing is fixed to the rear end cover and together with the rear end cover defines a first mounting cavity, and the control board is disposed in the first mounting cavity.

3. The motor drive assembly according to claim 2, characterized in that, The motor controller further includes a low-voltage connector, which is electrically connected to the control board, and at least a portion of the low-voltage connector is located outside the controller housing.

4. The motor drive assembly according to claim 2, characterized in that, The motor controller further includes a power module, which is disposed in the first mounting cavity and along the axial direction of the drive motor, and is located on the side of the control board near the controller housing.

5. The motor drive assembly according to any one of claims 2-4, characterized in that, The controller housing has the liquid inlet, and at least a portion of the first cooling channel is disposed within the controller housing.

6. The motor drive assembly according to claim 1, characterized in that, Along the axial direction of the drive motor, the front end cover, the motor housing, and the rear end cover are connected in sequence and together define a second mounting cavity, in which a stator and rotor module is fixed.

7. The motor drive assembly according to claim 1, characterized in that, The motor drive assembly further includes a liquid inlet pipe, which is connected to the liquid inlet and is movably disposed on the motor controller.

8. The motor drive assembly according to claim 1, characterized in that, The motor drive assembly further includes a liquid outlet pipe, which is connected to the liquid outlet and is movably disposed on the front end cover.

9. The motor drive assembly according to claim 1, characterized in that, The rear end cover has multiple mounting portions, which are arranged at circumferential intervals along the rear end cover. The mounting portions are used for fixed connection with the rear axle or vehicle frame.

10. A vehicle, characterized in that, Includes the motor drive assembly according to any one of claims 1-9.

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