Electric drive module, electric drive system and vehicle

Abstract

The invention discloses an electric driving module, an electric driving system and a vehicle, relates to the technical field of vehicles, and aims to solve the problem of how to optimize the layout of the electric driving system. The electric driving module comprises a transmission assembly, a generator and a plurality of first driving motors, the transmission assembly comprises an input part and a plurality of first output parts in transmission connection with the input part, the input part is suitable for being connected with an engine, the first output parts are suitable for being connected with a plurality of wheels of a vehicle, and the generator is in transmission connection with the input part. The multiple first driving motors are in transmission connection with the multiple first set of output pieces correspondingly.

Description

Technical Field

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

[0002] With the continuous development of new energy vehicles, the drive systems of vehicles can generally be pure electric drive systems and range extender drive systems.

[0003] The pure electric drive system usually has a range anxiety problem due to the limited battery capacity, while the range extender drive system requires an additional range extender, which will lead to a complex layout and high cost. Summary of the Invention

[0004] The purpose of the present application is to provide an electric drive module, an electric drive system, and a vehicle, aiming to solve the problem of how to optimize the layout of the electric drive system.

[0005] In a first aspect, the present application provides an electric drive module, which includes a transmission assembly, a generator, and a plurality of first drive motors. Among them, the transmission assembly includes an input member and a plurality of first set of output members that are in transmission connection with the input member. The input member is adapted to be connected to an engine, and the plurality of first set of output members are adapted to be connected to a plurality of wheels of the vehicle. The generator is in transmission connection with the input member, and the plurality of first drive motors are respectively in transmission connection with the plurality of first set of output members.

[0006] In this way, by integrating the generator and the plurality of first drive motors through the transmission assembly, the connection lines between the components can be reduced, making the structure of the electric drive module more compact. The integrated electric drive module can be installed and debugged as a whole, reducing the installation difficulty.

[0007] At the same time, the transmission assembly integrates the generator and the plurality of first drive motors, and the working states of the generator and the first drive motors can be flexibly adjusted by adjusting the transmission assembly, realizing the optimal matching of power and improving the overall efficiency of the electric drive system.

[0008] Optionally, the electric drive module further includes a support member, and the transmission assembly, the generator, and the plurality of first drive motors are all arranged on the support member.

[0009] Optionally, the support member is provided with an accommodation space, and the transmission assembly, the generator, and the plurality of first drive motors are all accommodated in the accommodation space.

[0010] Optionally, the first drive motor includes a first stator and a first rotor. The first rotor is arranged around the first set of output members corresponding to the first drive motor and is rotatable relative to the output member. The first stator is arranged around the first rotor, and the first stator is fixed to the support member.

[0011] Optionally, a first speed-changing assembly is provided between the first driving motor and the corresponding first set of output members.

[0012] Optionally, the first speed-changing assembly is a speed-reducing assembly.

[0013] Optionally, the speed-reducing assembly includes a first ring gear, a first sun gear, and a first planet carrier having first planet gears. The first sun gear is connected to the first driving motor. The first planet carrier is rotatably connected to the first planet gears and is fixedly connected to the first set of output members. The first planet gears are drivingly connected between the first ring gear and the first sun gear.

[0014] Optionally, the first planet gears include a first sub-planet gear and a second sub-planet gear. The first sub-planet gear and the second sub-planet gear are coaxially arranged and fixedly connected. The first sub-planet gear is drivingly connected to the first sun gear, and the second sub-planet gear is drivingly connected to the first ring gear. The diameter of the first sub-planet gear is larger than the diameter of the second sub-planet gear.

[0015] Optionally, the transmission assembly includes a clutch. The clutch includes a first clutch portion and a second clutch portion that can be coupled or separated. The first clutch portion is connected to the input member, and the second clutch portion is connected to a plurality of first sets of output members.

[0016] Optionally, the electric drive module further includes: a controller electrically connected to the generator and a plurality of first driving motors to control the energization or de-energization of the generator and the plurality of first driving motors.

[0017] Optionally, the transmission assembly further includes a second ring gear, a second sun gear, and a second planet carrier having second planet gears. The second sun gear is fixedly connected to the input member. The second planet carrier is rotatably connected to the second planet gears and is fixedly connected to the first clutch portion. The second planet gears are drivingly connected between the second ring gear and the second sun gear.

[0018] Optionally, the electric drive module further includes a differential connected between a plurality of first sets of output members. The differential is adapted to adjust the rotational speed difference between the plurality of first sets of output members.

[0019] Optionally, the electric drive module further includes a locking mechanism connected to the differential to make the rotational speeds of the plurality of first sets of output members the same.

[0020] Optionally, the generator includes a second stator and a second rotor. The second rotor is disposed around the input member and is rotatable relative to the input member. The second stator is disposed around the second rotor and is fixed to the support member.

[0021] Optionally, along the height direction of the vehicle, the position of the generator is flush with the position of the first driving motor.

[0022] Optionally, the central axis direction of the generator is perpendicular to the central axis direction of the first drive motor.

[0023] Optionally, the multiple first drive motors include a first motor and a second motor, and the multiple first group of output members include a first output member and a second output member; the first motor is drivingly connected to the first output member, and the second motor is drivingly connected to the second output member; the first output member and the second output member are adapted to be connected to two wheels of the vehicle.

[0024] In a second aspect, the present application further provides an electric drive system, which includes the electric drive module provided in any of the above embodiments.

[0025] Optionally, the electric drive system further includes an engine, and the engine is connected to the input member.

[0026] Optionally, the engine includes a plurality of cylinders arranged in parallel, and the arrangement direction of the cylinders is the same as the arrangement direction from the generator to the multiple first drive motors.

[0027] Optionally, the electric drive system further includes a plurality of second drive motors and a plurality of second groups of output members, the plurality of second drive motors are respectively drivingly connected to the plurality of second groups of output members, and the plurality of second groups of output members are adapted to drive a plurality of wheels of the vehicle to rotate.

[0028] In a third aspect, the present application further provides a vehicle, which includes the electric drive module and / or the electric drive system provided in any of the above embodiments.

[0029] Optionally, the multiple first groups of output members are adapted to be connected to a plurality of front wheels of the vehicle, and the multiple second groups of output members are adapted to be connected to a plurality of rear wheels of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0031] Figure 1 is a schematic structural diagram of a vehicle provided by an embodiment of the present application; Figure 2 is a schematic structural diagram of an electric drive system provided by an embodiment of the present application; Figure 3 is Figure 2 a partial enlarged view of the electric drive system shown; Figure 4 is Figure 2 a schematic structural diagram of the electric drive system in a first connection state shown; Figure 5 For Figure 2 the structural schematic diagram of the electric drive system shown in the second connection state.

[0032] Reference numerals: 1000, vehicle; 100, vehicle body; 200, wheel; 300, electric drive system; 01, electric drive module; 02, engine; 03, battery pack; 04, second drive motor; 05, second set of output components; 1, transmission component; 11, input component; 12, first set of output components; 121, first output component; 122, second output component; 13, clutch; 131, first clutch part; 132, second clutch part; 141, second ring gear; 142, second sun gear; 143, second planetary gear; 144, second planetary carrier; 15, differential; 16, locking mechanism; 2, generator; 201, second stator; 202, second rotor; 3, first drive motor; 31, first motor; 32, second motor; 301, first stator; 302, first rotor; 4, reduction component; 41, first ring gear; 42, first sun gear; 43, first planetary gear; 44, first planetary carrier; 5, support member. Detailed implementation manners

[0033] In the embodiments of the present application, the terms "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth", "fifth", "sixth" may explicitly or implicitly include one or more of such features.

[0034] In the embodiments of the present application, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element.

[0035] "A and / or B" includes the following three combinations: only A, only B, and the combination of A and B.

[0036] In the embodiments of the present application, "parallel", "perpendicular", and "equal" include the described situations and situations similar to the described ones, and the range of the similar situations is within an acceptable deviation range, where the acceptable deviation range is determined by those of ordinary skill in the art considering the measurements being discussed and the errors associated with the measurements of specific quantities (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, and the acceptable deviation range for approximate parallelism can be, for example, within a deviation of 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, and the acceptable deviation range for approximate perpendicularity can also be, for example, within a deviation of 5°. "Equal" includes absolute equality and approximate equality, and within the acceptable deviation range for approximate equality, the difference between the two equal ones can be less than or equal to 5% of any one of them, for example.

[0037] The embodiments of the present application provide an electrical equipment, which can be a vehicle, a ship, an aircraft, industrial equipment, agricultural machinery, or an urban emergency power system, etc. The embodiments of the present application will take the electrical equipment as a vehicle for a detailed introduction.

[0038] The vehicle can be a hybrid vehicle, an extended-range electric vehicle, a plug-in hybrid vehicle, a pure electric vehicle, etc. The vehicle can also be an engineering vehicle, a special operation vehicle, etc.

[0039] Please refer to Figure 1 , Figure 1 FIG. 1000 is a schematic structural diagram of a vehicle 1000 provided by the embodiments of the present application. The vehicle 1000 can include a vehicle body 100 and wheels 200. The vehicle body 100 is for the passengers to ride and carry items, and the wheels 200 are installed below the vehicle body 100, for carrying the vehicle body 100 and capable of rolling on the road surface so that the vehicle 1000 can travel.

[0040] The vehicle 1000 can also include an electric drive system 300. The electric drive system 300 can be used as the power source and power transmission device of the vehicle 1000, for providing power to the vehicle 1000 and driving the wheels 200 to drive the vehicle body 100 to move.

[0041] The electric drive system 300 of the vehicle 1000 can be a pure electric drive system, a hybrid drive system, an extended-range drive system, etc. The pure electric drive system includes a drive motor and a battery pack. The battery pack supplies power to the drive motor, and the drive motor converts electrical energy into mechanical energy to drive the vehicle 1000 to move. However, due to the limitation of the battery pack capacity, the endurance of the vehicle 1000 is relatively low.

[0042] Hybrid drive systems and range-extended drive systems may include an engine that can convert the chemical energy of fuel into mechanical energy to power vehicle 1000 and enhance its endurance. The range-extended drive system may also include a generator to convert the mechanical energy output by the engine into electrical energy for storage to achieve the effect of range extension.

[0043] However, in the prior art, since the electric drive system 300 includes multiple structural components, the layout is complex and it occupies a relatively large space.

[0044] Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of an electric drive system 300 provided in an embodiment of the present application. The electric drive system 300 may include an electric drive module 01, and the input end of the electric drive module 01 may be connected to the engine 02 and / or the battery pack 03.

[0045] When connected to the battery pack 03, the electric drive module 01 can convert the electrical energy output by the battery pack 03 into mechanical energy and transfer the mechanical energy to the wheels 200 of the vehicle 1000 to drive the vehicle 1000 to move. When connected to the engine 02, the electric drive module 01 can directly transfer the mechanical energy output by the engine 02 to the wheels 200 to drive the vehicle 1000 to move. The electric drive module 01 can also convert the mechanical energy output by the engine 02 into electrical energy and drive the wheels 200 to rotate through the drive motor.

[0046] Please continue to refer to Figure 2 , the electric drive system 300 may further include a battery pack 03, and the battery pack 03 may be electrically connected to the electric drive module 01 to supply power to the drive motor.

[0047] The electric drive system 300 may further include an engine 02, and the engine 02 is connected to the electric drive module 01 to transfer mechanical energy to the electric drive module 01, and is delivered to the wheels 200 through the electric drive module 01 to drive the vehicle 1000 to travel.

[0048] Please refer to in combination Figure 2 and Figure 3 , Figure 3 which is Figure 2 a partial enlarged view of the electric drive system 300 shown. The electric drive module 01 may include a transmission assembly 1. The transmission assembly 1 includes an input member 11 and a plurality of first-group output members 12. The input member 11 is used to connect to the generator 2, and the plurality of first-group output members 12 are in transmission connection with the input member 11, and the plurality of first-group output members 12 are used to connect to the plurality of wheels 200 of the vehicle 1000.

[0049] Through the transmission assembly 1, the transmission of the engine 02 to the plurality of wheels 200 of the vehicle 1000 can be realized to drive the vehicle 1000 to move forward.

[0050] The electric drive module 01 may further include a generator 2, and the generator 2 is drivingly connected to the input member 11. In this way, the mechanical energy output by the engine 02 can be transmitted to the generator 2, and the generator 2 can convert the mechanical energy into electrical energy to supply power to the vehicle 1000.

[0051] The electric drive module 01 further includes a plurality of first drive motors 3, and the plurality of first drive motors 3 can be respectively connected to a plurality of first sets of output members 12. Since the plurality of first sets of output members 12 are connected to a plurality of wheels 200 of the vehicle 1000, the mechanical energy output by the plurality of first drive motors 3 can be respectively transmitted to the plurality of wheels 200 of the vehicle 1000 to drive the plurality of wheels 200 to rotate.

[0052] In this way, by integrating the generator 2 and the plurality of first drive motors 3 through the transmission assembly 1, the connection lines between the components can be reduced, the structure of the electric drive module 01 can be made more compact, and the integrated electric drive module 01 can be installed and debugged as a whole, reducing the installation difficulty.

[0053] At the same time, since the transmission assembly 1 integrates the generator 2 and the plurality of first drive motors 3, by adjusting the transmission assembly 1, the working states of the generator 2 and the first drive motors 3 can be flexibly adjusted to achieve an optimized power matching and improve the overall efficiency of the electric drive system 300.

[0054] It should be noted that the first drive motor 3 is provided in plurality and is respectively connected to a plurality of first sets of output members 12 to output power to the plurality of wheels 200. In this way, independent control of the plurality of wheels 200 can be achieved, and thus the driving state of the vehicle 1000 can be made more flexible. When the wheels 200 of the vehicle 1000 do not need to be independently controlled, the first drive motor 3 can also be provided as one, and the first drive motor 3 is simultaneously connected to the plurality of first sets of output members 12 to drive the wheels 200.

[0055] In some embodiments of the present application, the electric drive module 01 may further include a support member 5, and the transmission assembly 1, the generator 2 and the plurality of first drive motors 3 are all disposed on the support member 5.

[0056] The support member 5 can provide an installation basis for the transmission assembly 1, the generator 2 and the plurality of first drive motors 3, so that the electric drive module 01 forms a rigid integral structure. In this way, the electric drive module 01 can effectively resist the influence of external loads and vibrations, reduce the relative displacement and deformation between the components, and thus improve the stability and reliability of the electric drive module 01.

[0057] In some embodiments, the support member 5 is provided with a receiving space, and the transmission assembly 1, the generator 2, and the plurality of first drive motors 3 are all received in the receiving space.

[0058] In this way, the support member 5 can be a housing structure, which can further optimize the spatial layout, make the structures of the transmission assembly 1, the generator 2, and the plurality of first drive motors 3 more compact, reduce the space occupied by the electric drive module 01, and facilitate the installation and debugging of the electric drive module 01.

[0059] In addition, receiving the transmission assembly 1, the generator 2, and the plurality of first drive motors 3 in the receiving space can also protect the transmission assembly 1, the generator 2, and the plurality of first drive motors 3, reduce the interference of rain, dust, or foreign objects to the electric drive module 01, thereby ensuring the normal operation of the electric drive module 01 and improving the service life of the electric drive module 01.

[0060] In some other embodiments, the support member 5 can also be a bracket or a connecting seat, etc., and the present application does not make further limitations.

[0061] Please continue to refer to Figure 2 and Figure 3 In some embodiments of the present application, the first drive motor 3 can include a first stator 301 and a first rotor 302. The first rotor 302 is disposed around the first set of output members 12 corresponding to the first drive motor 3 and is rotatable relative to the output members. The first stator 301 is disposed around the first rotor 302, and the first stator 301 is fixed to the support member 5.

[0062] Through the layout manner of the first rotor 302 around the first set of output members 12 and the first stator 301 around the first rotor 302, the internal space of the first drive motor 3 can be fully utilized, the structure is more compact, thereby reducing the overall volume of the motor and improving the integration degree of the electric drive module 01.

[0063] In addition, the first stator 301 is fixed to the support member 5, and the support member 5 can provide stable support for the first stator 301, reducing the interference of external factors to the first stator 301. At the same time, the surrounding structure also helps to reduce the influence of electromagnetic interference on the performance of the motor and improve the operation reliability of the motor.

[0064] In some other embodiments, the first set of output members 12 is disposed outside the first drive motor 3, and the first set of output members 12 is connected to the rotor of the first drive motor 3 to transmit the mechanical energy of the first drive motor 3 to the first set of output members 12.

[0065] In some embodiments, a first speed change assembly is provided between the first drive motor 3 and the corresponding first set of output members 12.

[0066] In this way, the first speed-changing assembly can adjust the torque and rotational speed transmitted from the first driving motor 3 to the first set of output members 12 according to the actual requirements of the vehicle 1000.

[0067] Exemplarily, when the vehicle 1000 starts, a relatively large torque is required to overcome the static inertia. The first speed-changing assembly can amplify the torque output by the first driving motor 3, enabling the vehicle 1000 to start smoothly; while when the vehicle 1000 is traveling at a high speed, the torque can be appropriately reduced and the rotational speed can be increased to meet the vehicle 1000's speed requirements.

[0068] In this way, the performance of the first driving motor 3 can be fully utilized, enabling the motor to operate near the optimal efficiency point, reducing energy loss, lowering energy consumption, and improving the working efficiency of the electric drive module 01.

[0069] In some embodiments, the first speed-changing assembly can be a reduction assembly 4. The reduction assembly 4 can convert the high-speed low-torque output by the first driving motor 3 into low-speed high-torque to meet the large-torque requirements of the vehicle 1000. Additionally, the reduction assembly 4 can effectively reduce the vibration caused by rotational speed mismatch, improving the smoothness and reliability of the vehicle 1000's operation.

[0070] In some other embodiments, the first speed-changing assembly can also be an acceleration assembly or other adjustable speed-changing assemblies. Specifically, the size and range of speed change can be selected according to the specific requirements of the vehicle 1000, and the present application does not make further limitations in this regard.

[0071] In some embodiments, the reduction assembly 4 includes a first ring gear 41, a first sun gear 42, and a first planet carrier 44 having first planet gears 43. The first sun gear 42 is connected to the first driving motor 3; the first planet carrier 44 is rotatably connected to the first planet gears 43, and the first planet carrier 44 is fixedly connected to the first set of output members 12; the first planet gears 43 are in transmission connection between the first ring gear 41 and the first sun gear 42.

[0072] The reduction assembly 4 can be a planetary gear reduction assembly, and the power transmission is achieved by the first planet gears 43 revolving around and rotating about the first sun gear 42. The planetary gear reduction assembly can integrate multiple gears (the first sun gear 42, the first planet gears 43, and the first ring gear 41), reducing the volume and weight of the reduction assembly 4, and facilitating manufacturing, installation, and maintenance.

[0073] In addition, since the planetary gear reduction assembly includes a plurality of first planetary gears 43 surrounding the sun gear, the plurality of first planetary gears 43 bear loads simultaneously, which can improve the load-bearing capacity of the reduction assembly 4. At the same time, when the vehicle 1000 starts, brakes, or is subjected to bumps and impacts, the planetary gear reduction assembly can buffer and absorb the impact energy through the revolution and rotation of the planetary gears, thereby reducing the impact on the first drive motor 3 and the first set of output members 12, protecting the safe operation of the electric drive module 01, and improving the smoothness and reliability of the operation of the vehicle 1000.

[0074] In some embodiments, the first planetary gear 43 includes a first sub-planetary gear and a second sub-planetary gear. The first sub-planetary gear and the second sub-planetary gear are coaxially arranged and fixedly connected; the first sub-planetary gear is in transmission connection with the first sun gear 42, and the second sub-planetary gear is in transmission connection with the first ring gear 41; the diameter of the first sub-planetary gear is larger than the diameter of the second sub-planetary gear.

[0075] Since the first sub-planetary gear and the second sub-planetary gear are coaxially arranged and fixedly connected, they can jointly participate in the transmission, improving the load-bearing capacity of the reduction assembly 4 and the stability of the operation of the electric drive module 01. Since the diameter of the first sub-planetary gear is larger than the diameter of the second sub-planetary gear, the transmission ratio between the first drive motor 3 and the first set of output members 12 can be further optimized, improving the transmission accuracy of the reduction assembly 4.

[0076] In some other embodiments, the reduction assembly 4 can also be a common gear transmission assembly, a belt transmission assembly, a chain transmission assembly, a torque converter, an electromagnetic transmission, etc., and the present application does not make further limitations thereon.

[0077] In some embodiments, along the width direction of the vehicle 1000, the reduction assembly 4 can be arranged on one side of the first drive motor 3 close to the corresponding wheel 200.

[0078] In some other embodiments, along the width direction of the vehicle 1000, the reduction assembly 4 can also be arranged on one side of the first drive motor 3 away from the corresponding wheel 200.

[0079] In some embodiments, the transmission assembly 1 can further include a clutch 13. The clutch 13 includes a first clutch part 131 and a second clutch part 132 that can be coupled or separated. The first clutch part 131 is connected to the input member 11, and the second clutch part 132 is connected to the plurality of first sets of output members 12.

[0080] The clutch 13 can achieve power transmission and disconnection between the input member 11 and multiple first-group output members 12. When the first clutch portion 131 and the second clutch portion 132 are coupled, power is smoothly transmitted from the input member 11 to the first-group output members 12, so that mechanical energy can be transmitted to the wheels 200 of the vehicle 1000 to drive the wheels 200 to rotate. When the first clutch portion 131 and the second clutch portion 132 are separated, the power output by the engine 02 is only transmitted to the generator 2 to drive the generator 2 to generate electricity, and is not directly transmitted to the wheels 200 of the vehicle 1000. The clutch 13 can quickly cut off or transmit power, improving the flexibility and convenience of operation.

[0081] In this way, according to different requirements of the vehicle 1000, by adjusting the clutch 13, the electric drive system 300 can be adjusted so that the electric drive system 300 is in different working conditions, thereby reducing the energy consumption of the vehicle 1000 and improving the efficiency of the electric drive system 300.

[0082] Specifically, please refer to Figure 3 、 Figure 4 and Figure 5 , Figure 4 which is Figure 2 a schematic structural diagram of the electric drive system 300 in the first connection state, Figure 5 and Figure 2 is a schematic structural diagram of the electric drive system 300 in the second connection state. In the first connection state, the first clutch portion 131 and the second clutch portion 132 of the clutch 13 are separated, and the power of the engine 02 cannot be transmitted to the multiple first-group output members 12. The generator 2 receives the mechanical energy output by the engine 02 and converts the mechanical energy into electrical energy.

[0083] In the second connection state, the first clutch portion 131 and the second clutch portion 132 of the clutch 13 are coupled, and the power of the generator 2 can be directly transmitted to the multiple first-group output members 12 to drive the wheels 200 to rotate.

[0084] Please continue to refer to Figure 2 and Figure 3 . In some embodiments, the electric drive module 01 may further include a controller, and the controller is electrically connected to both the generator 2 and the multiple first drive motors 3 to control the energization or de-energization of the generator 2 and the multiple first drive motors 3.

[0085] The controller is electrically connected to the generator 2. When the electric drive system 300 is in a first connection state, the controller can control the generator 2 to be powered on, so that the stator of the generator 2 can generate a magnetic field, allowing the generator 2 to generate electricity; when the electric drive system 300 is in a second connection state, the controller can control the generator 2 to be powered off, and the stator of the generator 2 cannot generate a magnetic field. When the rotor receives the mechanical energy transmitted by the engine 02, it can only perform mechanical rotation without generating electrical energy.

[0086] The controller is electrically connected to the first drive motor 3. When the electric drive system 300 is in the second connection state, the controller can directly transmit mechanical energy to the first set of output members 12 to drive the wheels 200 to rotate. Since the first set of output members 12 is connected to the rotor of the first drive motor 3, the rotor of the first drive motor 3 may rotate. The controller controls the first drive motor 3 to be powered off, which can prevent the first drive motor 3 from being damaged.

[0087] In some embodiments, the transmission assembly 1 may also include a second ring gear 141, a second sun gear 142 and a second planetary carrier 144 having a second planetary gear 143, the second sun gear 142 is fixedly connected to the input member 11; the second planetary carrier 144 is rotatably connected to the second planetary gear 143, and the second planetary carrier 144 is fixedly connected to the first clutch part 131; the second planetary gear 143 is transmission-connected between the second ring gear 141 and the second sun gear 142.

[0088] The planetary gear assembly consisting of the second ring gear 141, the second sun gear 142 and the second planet carrier 144 having the second planetary gear 143 can be combined with the clutch 13, so that the clutch 13 can be more smoothly switched between coupling and separation, thereby improving the stability and comfort of the operation of the vehicle 1000. At the same time, the planetary gear assembly can increase the torque between the output member and the plurality of first group output members 12, and improve the carrying capacity of the transmission assembly 1 to meet the transmission requirements of the vehicle 1000.

[0089] When the vehicle 1000 turns, the radius of the driving tracks of the inner and outer wheels 200 is different, so the wheels 200 need to rotate at different speeds. Therefore, in some embodiments, the electric drive module 01 may further include a differential 15, which is connected between the plurality of first output components 12, and the differential 15 is suitable for adjusting the speed difference of the plurality of first output components 12.

[0090] In this way, since multiple first group output members 12 are drivingly connected to multiple wheels 200, by providing a differential 15 between the multiple first group output members 12, the differential 15 can adjust the rotational speed difference of the multiple first group output members 12, thereby reducing the rotational speed of the inner wheel 200 and increasing the rotational speed of the outer wheel 200, so as to enable the vehicle 1000 to turn smoothly and steadily, reduce tire wear and resistance during steering, and improve the flexibility and comfort of steering.

[0091] Since the differential 15 is connected between the multiple first group output members 12, the power and speed between different wheels 200 may be different. Exemplarily, when the vehicle 1000 is in an off-road scenario, the differential 15 will distribute most of the power to the suspended wheel 200 with less resistance, resulting in the wheel 200 with adhesion not being able to obtain sufficient power, and it is difficult for the vehicle 1000 to get out of trouble. When the vehicle 1000 is driving at high speed and one of the wheels 200 suddenly encounters a road surface with low adhesion (such as a waterlogged road surface), the differential 15 will cause the rotational speed of that wheel 200 to increase, resulting in the vehicle 1000 deviating, affecting driving safety.

[0092] In some embodiments, the electric drive module 01 may further include a locking mechanism 16, and the locking mechanism 16 is connected to the differential 15 to make the rotational speeds of the multiple first group output members 12 the same.

[0093] In this way, the locking mechanism 16 can lock the differential 15 to keep the rotational speeds of the multiple first group output members 12 consistent, so that the vehicle 1000 can safely and effectively cope with more road conditions and usage scenarios.

[0094] In some embodiments, the generator 2 includes a second stator 201 and a second rotor 202. The second rotor 202 surrounds the input member 11 and is rotatable relative to the input member 11. The second stator 201 surrounds the second rotor 202, and the second stator 201 is fixed to the support member 5.

[0095] By the layout of the second rotor 202 surrounding the input member 11 and the second stator 201 surrounding the second rotor 202, the internal space of the generator 2 can be fully utilized, the structure is more compact, thereby reducing the overall volume of the generator 2 and improving the integration of the electric drive module 01.

[0096] In addition, the second stator 201 is fixed to the support member 5, and the support member 5 can provide stable support for the second stator 201, reducing interference from external factors to the second stator 201. At the same time, the surrounding structure also helps to reduce the impact of electromagnetic interference on the performance of the motor and improve the operating reliability of the generator 2.

[0097] In some embodiments, along the height direction of the vehicle 1000, the position of the generator 2 is flush with the position of the first drive motor 3.

[0098] Since the electric drive module 01 is usually arranged on the chassis of the vehicle 1000, and the position of the generator 2 is flush with the position of the first drive motor 3, the difference in space occupancy of the electric drive module 01 in the height direction can be reduced, making the chassis layout more regular and compact.

[0099] In addition, the fact that the position of the generator 2 is flush with the position of the first drive motor 3 is conducive to the integrated design of the generator 2 and the first drive motor 3, forming a relatively independent electric drive module 01, thereby facilitating the overall design and production of the vehicle 1000, improving production efficiency, and reducing manufacturing costs.

[0100] In some other embodiments, the generator 2 and the first drive motor 3 may also be arranged staggeredly, and the present application does not further limit this.

[0101] In some embodiments, the central axis direction of the generator 2 is perpendicular to the central axis direction of the first drive motor 3. In this way, the transmission path between the input member 11 and the first set of output members 12 can be made more reasonable, and the arrangement of the generator 2 and the first drive motor 3 can be made more compact, thereby improving the integration degree of the electric drive module 01 and saving the space layout requirements of the electric drive system 300.

[0102] In some embodiments, the multiple first drive motors 3 include a first motor 31 and a second motor 32, and the multiple first sets of output members 12 include a first output member 121 and a second output member 122; the first motor 31 is drivingly connected to the first output member 121, and the second motor 32 is drivingly connected to the second output member 122; the first output member 121 and the second output member 122 are adapted to be connected to two wheels 200 of the vehicle 1000.

[0103] In this way, the two motors can work simultaneously, providing a greater total power output for the vehicle 1000. In addition, the first motor 31 and the second motor 32 are respectively drivingly connected to the first output member 121 and the second output member 122, and then connected to the two wheels 200 of the vehicle 1000, so that the two wheels 200 of the vehicle 1000 can independently obtain power. In this way, the maneuverability of the vehicle 1000 can be improved, facilitating the vehicle 1000 to cope with complex road conditions and improving the reliability and stability of the vehicle 1000.

[0104] In some other embodiments, the first drive motor 3 may also be provided with four, six or eight, and be respectively connected to different wheels 200, and the present application does not limit this.

[0105] In some embodiments, the engine 02 includes a plurality of cylinder blocks arranged in parallel, and the arrangement direction of the cylinder blocks is the same as the arrangement direction from the generator 2 to the multiple first drive motors 3.

[0106] In this way, multiple cylinders of the engine 02 are arranged along the length direction of the vehicle 1000, that is, the engine 02 is longitudinally arranged. In this way, the handling stability of the vehicle 1000 can be further improved.

[0107] In some embodiments, the electric drive system 300 may further include multiple second drive motors 04 and multiple second sets of output members 05. The multiple second drive motors 04 are respectively drivingly connected to the multiple second sets of output members 05, and the multiple second sets of output members 05 are adapted to drive multiple wheels 200 of the vehicle 1000 to rotate.

[0108] The multiple second drive motors 04 are adapted to transfer mechanical energy to the multiple second sets of output members 05, and then to the multiple wheels 200 of the vehicle 1000. The second drive motor 04 can achieve independent control of the other wheels 200 of the vehicle 1000, which can further improve the handling flexibility of the vehicle 1000, facilitate the vehicle 1000 to cope with complex road conditions, and improve the reliability and stability of the vehicle 1000.

[0109] In some embodiments, the multiple first sets of output members 12 are adapted to connect to multiple front wheels of the vehicle 1000, and the multiple second sets of output members 05 are adapted to connect to multiple rear wheels of the vehicle 1000.

[0110] In this way, the electric drive module 01 can be arranged at the front end of the vehicle 1000 along the length direction. In this way, it helps to optimize the load distribution between the front and rear axles, can improve the adhesion of the front wheels to the ground, and when the vehicle 1000 turns or brakes, the vehicle 1000 has better stability and faster response speed.

[0111] At the same time, arranging the electric drive module 01 at the front end of the vehicle 1000 along the length direction helps to increase the storage space of the passenger compartment and the trunk of the vehicle 1000, and improve the comfort of the vehicle 1000.

[0112] Based on the above electric drive system 300, the vehicle 1000 can have a pure electric drive mode. At this time, the generator 2 does not work, and the first drive motor 3 and the second drive motor 04 receive electrical energy from the battery pack 03 and convert it into mechanical energy to drive the wheels 200 to rotate independently.

[0113] The vehicle 1000 can also have a series power generation mode. The engine 02 drives the generator 2 to generate electricity. The generator 2 stores the electrical energy in the battery pack 03. The battery pack 03 outputs electrical energy to the first drive motor 3 and the second drive motor 04. The first drive motor 3 and the second drive motor 04 convert the electrical energy into mechanical energy to drive the wheels 200 to rotate.

[0114] The vehicle 1000 may also have an engine direct drive mode. The engine 02 outputs mechanical energy, which is directly output to a plurality of first set of output members 12 through the transmission assembly 1, thereby driving the wheels 200 to rotate.

[0115] The vehicle 1000 may also have a parallel drive mode. At this time, the engine 02 outputs mechanical energy, which is directly output to a plurality of first set of output members 12 through the transmission assembly 1, thereby driving the wheels 200 to rotate; meanwhile, the first drive motor 3 and the second drive motor 04 receive electrical energy from the battery pack 03 and convert it into mechanical energy, and simultaneously drive the wheels 200 to rotate.

[0116] By switching between multiple drive modes, different power requirements of the vehicle 1000 can be adapted, thereby saving the energy consumption of the vehicle 1000 and improving the operating efficiency of the vehicle 1000.

[0117] In the description of the embodiments of the present application, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0118] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An electric drive module, characterized in that, Comprising: A transmission assembly (1), including an input member (11) and a plurality of first group output members (12) drivingly connected to the input member (11), the input member (11) being adapted to be connected to an engine (02), and the plurality of first group output members (12) being adapted to be connected to a plurality of vehicle wheels (200); A generator (2), drivingly connected to the input member (11); A plurality of first drive motors (3), respectively drivingly connected to the plurality of first group output members (12).

2. The electric drive module according to claim 1, characterized in that, Further comprising: A support member (5), on which the transmission assembly (1), the generator (2), and the plurality of first drive motors (3) are all disposed.

3. The electric drive module according to claim 2, characterized in that, The support member (5) is provided with an accommodation space, and the transmission assembly (1), the generator (2), and the plurality of first drive motors (3) are all accommodated in the accommodation space.

4. The electric drive module according to claim 2, wherein The first drive motor (3) includes a first stator (301) and a first rotor (302), the first rotor (302) is disposed around the first group output member (12) corresponding to the first drive motor (3) and is rotatable relative to the first group output member (12), the first stator (301) is disposed around the first rotor (302), and the first stator (301) is fixed to the support member (5).

5. The electric drive module according to claim 1, characterized in that A first speed change assembly is provided between the first drive motor (3) and the corresponding first group output member (12).

6. The electric drive module according to claim 5, characterized in that, The first speed change assembly is a speed reduction assembly.

7. The electric drive module according to claim 6, characterized in that, The speed reduction assembly (4) includes: A first ring gear (41); A first sun gear (42), the first sun gear (42) being connected to the first drive motor (3); A first planet carrier (44) having a first planet gear (43), the first planet carrier (44) being rotatably connected to the first planet gear (43), and the first planet carrier (44) being fixedly connected to the first group output member (12); the first planet gear (43) is drivingly connected between the first ring gear (41) and the first sun gear (42).

8. The electric drive module according to claim 7, characterized in that, The first planet gear (43) includes a first sub-planet gear and a second sub-planet gear, the first sub-planet gear and the second sub-planet gear are coaxially disposed, and the first sub-planet gear and the second sub-planet gear are fixedly connected; The first sub-planet gear is drivingly connected to the first sun gear (42), and the second sub-planet gear is drivingly connected to the first ring gear (41); the diameter of the first sub-planet gear is larger than the diameter of the second sub-planet gear.

9. The electric drive module according to claim 1, characterized in that The transmission assembly (1) includes a clutch (13), the clutch (13) includes a first clutch portion (131) and a second clutch portion (132) that can be coupled or separated, the first clutch portion (131) is connected to the input member (11), and the second clutch portion (132) is connected to the plurality of first group output members (12).

10. The electric drive module according to claim 9, characterized in that, Further comprising: A controller, the controller is electrically connected to the generator (2) and multiple said first drive motors (3) respectively to control the energization or de-energization of the generator (2) and multiple said first drive motors (3).

11. The electric drive module according to claim 9, characterized in that, The transmission assembly (1) further includes: A second ring gear (141); A second sun gear (142), the second sun gear (142) is fixedly connected to the input member (11); A second planet carrier (144) having a second planet gear (143), the second planet carrier (144) is rotatably connected to the second planet gear (143), and the second planet carrier (144) is fixedly connected to the first clutch portion (131); the second planet gear (143) is in transmission connection between the second ring gear (141) and the second sun gear (142).

12. The electric drive module according to claim 1, wherein, It further includes: A differential (15), the differential (15) is connected between multiple said first group of output members (12), and the differential (15) is adapted to adjust the rotational speed difference of multiple said first group of output members (12).

13. The electric drive module according to claim 12, characterized in that, It further includes: A locking mechanism (16), the locking mechanism (16) is connected to the differential (15) to make the rotational speeds of multiple said first group of output members (12) the same.

14. The electric drive module according to claim 2, characterized in that, The generator (2) includes a second stator (201) and a second rotor (202), the second rotor (202) is arranged around the input member (11) and is rotatable relative to the input member (11), the second stator (201) is arranged around the second rotor (202), and the second stator (201) is fixed to the support member (5).

15. The electric drive module according to claim 1, characterized in that, Along the height direction of the vehicle, the position of the generator (2) is flush with the position of the first drive motor (3).

16. The electric drive module according to claim 15, characterized in that, The central axis direction of the generator (2) is perpendicular to the central axis direction of the first drive motor (3).

17. The electric drive module according to claim 1, characterized in that, Multiple said first drive motors (3) include a first motor (31) and a second motor (32), multiple said first group of output members (12) include a first output member (121) and a second output member (122); The first motor (31) is in transmission connection with the first output member (121), and the second motor (32) is in transmission connection with the second output member (122); The first output member (121) and the second output member (122) are adapted to be connected to two wheels (200) of the vehicle.

18. An electric drive system, characterized in that, It includes the electric drive module (01) according to any one of claims 1-17.

19. The electric drive system according to claim 18, characterized in that It further includes: An engine (02), the engine (02) is connected to the input member (11).

20. The electric drive system according to claim 19, characterized in that, The engine (02) includes multiple cylinders arranged in parallel, and the arrangement direction of the cylinders is the same as the arrangement direction from the generator (2) to multiple said first drive motors (3).

21. The electric drive system according to claim 20, characterized in that, It further includes: Multiple second drive motors (04) and multiple second group of output members (05), multiple said second drive motors (04) are respectively in transmission connection with multiple said second group of output members (05), and multiple said second group of output members (05) are adapted to drive multiple wheels (200) of the vehicle to rotate.

22. A vehicle, characterized in that, Comprising the electric drive module (01) according to any one of claims 1-17, and / or the electric drive system (300) according to any one of claims 18-21.

23. The vehicle according to claim 22, characterized in that, The plurality of first group of output members (12) are adapted to connect to a plurality of front wheels of the vehicle; The vehicle further comprises a plurality of second group of output members (05), the plurality of second group of output members (05) being adapted to connect to a plurality of rear wheels of the vehicle.

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