Power systems and electrical equipment

Abstract

The present application discloses a power system and an electric device, which relates to the technical field of electric devices, and aims to solve the problem that the structure of the hybrid power system in the related technology is relatively complex and occupies a large space in the engine compartment. The power system includes a first wheel drive member, a first motor and an engine, the first wheel drive member is used to drive the first wheel to rotate; the first motor is connected to the first wheel drive member by transmission; the engine is connected to the first wheel drive member by transmission, and the first clutch is arranged between the first wheel drive member and the first wheel.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a power system and electrical equipment. Background Art

[0002] With the continuous improvement of energy conservation and environmental protection requirements, electrical equipment such as new energy vehicles has been rapidly developed. In order to ensure the endurance of electrical equipment, electrical equipment will adopt hybrid power system to drive the electrical equipment through a variety of driving modes, thereby improving the endurance of electrical equipment.

[0003] In the related art, the hybrid power system usually includes an engine, a generator, a drive motor and a transmission assembly, so that the engine assists the drive motor to drive the electric device to travel, and the engine drives the generator to generate electricity, thereby improving the endurance of the electric device and increasing the energy-saving and environmental protection performance of the electric device. However, the structure of the hybrid power system in the related art is relatively complex, and it occupies a large space in the engine compartment, which is not conducive to the arrangement of various components in the engine compartment. Summary of the invention

[0004] The purpose of the present application is to provide a power system and electrical equipment, aiming to solve the problem that the hybrid power system in the related art has a relatively complex structure and occupies a large space in the engine compartment.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a power system including a first wheel drive, a first motor and an engine, wherein the first motor and the first wheel drive, as well as the engine and the first wheel drive are all transmission-connected; a first clutch is disposed between the first wheel drive and the first wheel.

[0007] The power system provided in the embodiment of the present application is connected to the first wheel drive member through a first motor, and the engine is connected to the first wheel drive member through a first clutch. When the first clutch is closed, the power system can be put into a driving mode. At this time, at least one of the first motor and the engine works to drive the first wheel drive member to rotate. The rotation of the first wheel drive member can drive the first wheel to rotate, thereby driving the vehicle to move.

[0008] When the first clutch is disconnected, the power system can also be in the extended range mode. At this time, the engine is working, and the engine can drive the first wheel drive member to rotate, so that the first wheel drive member drives the rotor of the first motor to rotate, so that the first motor generates electricity. In this way, the power system does not need to be equipped with a separate generator for generating electricity, thereby simplifying the structure of the power system, reducing the space occupied by the power system, and further facilitating the arrangement of various components in the vehicle, so as to reasonably utilize the space of the vehicle.

[0009] In some embodiments, the first clutch is closed, and at least one of the first motor and the engine is operated to drive the first wheel drive member to rotate, and the first wheel drive member drives the first wheel to rotate, so that the power system is in a driving mode; the first clutch is disconnected, and the engine is operated to drive the first wheel drive member to rotate, and the first wheel drive member drives the first motor to generate electricity, so that the power system is in an extended-range mode.

[0010] In some embodiments, the power system further includes a second motor and a second wheel drive member, the engine and the second wheel drive member, and the second motor and the second wheel drive member are all in transmission connection, and the second wheel drive member is used to drive the second wheel to rotate. In this way, the second motor is added to the power system to drive the vehicle, thereby improving the power performance of the vehicle and improving the driving experience of the driver.

[0011] In some embodiments, the first motor and the second motor are both not working, and the engine is working to drive the first wheel drive member and the second wheel drive member to rotate, the first wheel drive member drives the first wheel to rotate, and the second wheel drive member drives the second wheel to rotate, so that the power system is in the engine drive mode; the engine is not working, and the first motor and the second motor are working; the first motor drives the first wheel drive member to rotate to drive the first wheel to rotate; the second motor drives the second wheel drive member to rotate to drive the second wheel to rotate, so that the power system is in the pure electric drive mode; the engine, the first motor and the second motor are all working to simultaneously drive the first wheel drive member and the second wheel drive member to rotate, the first wheel drive member drives the first wheel to rotate, and the second wheel drive member drives the second wheel to rotate, so that the power system is in the hybrid drive mode.

[0012] In some embodiments, the power system further includes a second clutch, which is disposed between the engine and the second wheel driving member. In this way, when the engine drives the first motor to generate electricity, the second clutch can be disconnected, so that the output power of the engine can be fully used to drive the first motor to generate electricity, thereby improving the power generation efficiency of the first motor.

[0013] In some embodiments, the first clutch is closed and the second clutch is disconnected, and the power system is in a pure electric drive mode; the first clutch is closed and the second clutch is closed, and the power system is in an engine operating mode or a hybrid drive mode; the first clutch is disconnected and the second clutch is disconnected, the power system is in an extended-range mode, and the second motor works to drive the second wheel drive member to rotate, and the second wheel drive member drives the second wheel to rotate.

[0014] In some embodiments, the power system further includes a differential, the differential includes an input end, a first output end, and a second output end, the input end is drivingly connected to the output end of the engine, the first output end is drivingly connected to the first wheel drive member, and the second clutch is provided between the second output end and the second wheel drive member. By providing the differential, the engine and the first wheel drive member, as well as the engine and the second wheel drive member, can be simultaneously drivingly connected through the differential, so as to reduce the complexity of the connection between the engine, the first wheel drive member, and the second wheel drive member, thereby simplifying the structure of the power system.

[0015] In some embodiments, the differential includes a driving gear, a driven gear, a planetary carrier, a first planetary gear, a second planetary gear, a first output gear, a second output gear, a first transmission member and a second transmission member, the driving gear is connected to the engine in a driving manner; the driven gear is meshed with the driving gear; the planetary carrier is connected to the driven gear; the first planetary gear and the second planetary gear are arranged opposite to each other along a first direction and are respectively rotatably connected to the planetary carrier, and the first direction is perpendicular to the axial direction of the driven gear; along the axial direction of the driven gear, the first output gear and the second output gear are arranged opposite to each other, and the second output gear is located between the first output gear and the driven gear; the first output gear and the first planetary gear are meshed, and the first output gear and the second planetary gear are meshed; the second output gear and the first planetary gear, and the second output gear and the second planetary gear are meshed; one end of the first transmission member is connected to the first output gear, and the other end of the first transmission member is connected to the first wheel driving member; one end of the second transmission member is connected to the second output gear, and the other end of the second transmission member is connected to the second clutch. In this way, when the vehicle is driven only by the first motor and the second motor, the engine's characteristic of having a large reverse braking torque can be utilized to prevent the first motor from driving the engine to rotate in the opposite direction through the differential, so that the first motor can use more power to drive the first wheel to rotate, thereby improving the power performance of the first motor.

[0016] In some embodiments, the power system further includes a third clutch, which is disposed between the input end and the output end of the engine. In this way, when the vehicle is driven only by the first motor and the second motor, the third clutch can be disconnected, thereby reducing the resistance generated by the engine to the first motor through the differential, so as to further improve the power performance of the first motor.

[0017] In some embodiments, the third clutch is closed, and the first clutch and the second clutch are both closed, and the power system is in engine drive mode or hybrid drive mode; the third clutch is closed, the first clutch and the second clutch are both disconnected, and the power system is in extended-range mode; the third clutch is disconnected, the second clutch is disconnected, and the first clutch is closed, and the power system is in pure electric drive mode.

[0018] In some embodiments, the power system further includes a fourth clutch, which is disposed between the second wheel drive member and the second wheel. In this way, when the engine drives the first motor to generate electricity, the fourth clutch can be controlled to be disconnected. In this way, when the engine drives the second wheel drive member to rotate, the second wheel drive member will drive the rotor of the second motor to rotate, thereby driving the second motor to generate electricity. In this way, the first motor and the second motor can generate electricity at the same time, thereby improving the power generation efficiency of the power system.

[0019] In some embodiments, the fourth clutch is closed and the first clutch is closed, and the power system is in the engine drive mode, the pure electric drive mode or the hybrid drive mode; the fourth clutch is disconnected, the first clutch is disconnected, the engine is working, the engine drives the first wheel drive member and the second wheel drive member to rotate, the first wheel drive member drives the first motor to generate electricity, and the second wheel drive member drives the second motor to generate electricity, so that the power system is in the first extended-range mode; the fourth clutch is closed, the first clutch is disconnected, the second motor is working, and the second motor drives the second wheel drive member to rotate to drive the second wheel to rotate; and the engine drives the first wheel drive member to rotate, and the first wheel drive member drives the first motor to generate electricity, so that the power system is in the second extended-range mode.

[0020] In some embodiments, the power system further includes a differential and a third clutch, the differential includes an input end, a first output end and a second output end, the first output end is transmission-connected to the first wheel drive member, and the second output end is transmission-connected to the second wheel drive member; the third clutch is arranged between the input end and the output end of the engine. When the vehicle is driven by only the first motor and the second motor, the third clutch can be disconnected to reduce the resistance of the engine to the first wheel drive member and the second wheel drive member, so that the first motor and the second motor can use more power to drive the first wheel and the second wheel to rotate, so as to improve the power performance of the first motor and the second motor.

[0021] In some embodiments, the third clutch is disconnected, the fourth clutch and the first clutch are both closed, and the power system is in a pure electric drive mode; the third clutch is closed, the fourth clutch and the first clutch are both closed, and the power system is in an engine drive mode or a hybrid drive mode; the third clutch is closed, the fourth clutch and the first clutch are both disconnected, and the power system is in a first extended-range mode; the third clutch is closed, the fourth clutch is closed, the first clutch is disconnected, and the power system is in a second extended-range mode.

[0022] In some embodiments, the power system further includes a third motor, a third wheel driver, a fourth motor and a fourth wheel driver, wherein the third motor is connected to the third wheel driver, and the third wheel driver is used to drive the third wheel to rotate; the fourth motor is connected to the fourth wheel driver, and the fourth wheel driver is used to drive the fourth wheel to rotate. In this way, the third wheel can be driven to rotate by the third motor, and the fourth wheel can be driven to rotate by the fourth motor, thereby further improving the power performance of the vehicle and improving the driving experience.

[0023] In some embodiments, when the power system is in driving mode or extended-range mode, the third motor and the fourth motor are working; the third motor drives the third wheel drive member to rotate to drive the third wheel to rotate; the fourth motor drives the fourth wheel drive member to rotate to drive the fourth wheel to rotate.

[0024] In some embodiments, the power system further includes a battery, and the first motor is electrically connected to the battery. In this way, when the first motor generates electricity, the electric energy can be stored in the battery, thereby ensuring that the battery has sufficient electric energy to improve the endurance of the vehicle.

[0025] In some embodiments, the first electric machine charges the battery when the powertrain system is in the extended-range mode.

[0026] A second aspect of the present application provides an electrical device, which includes a device body, a first wheel and a power system, wherein the first wheel is rotatably connected to the device body; the power system is connected to the device body, and the first wheel drive is transmission-connected to the first wheel.

[0027] It should be noted that the technical effects brought about by the implementation method of the second aspect can refer to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0030] Figure 2 A schematic diagram of the connection relationship between the power system and the wheels provided in some embodiments of the present application;

[0031] Figure 3 for Figure 2The schematic diagram of the structure of the power system shown in FIG. 1 is a schematic diagram of the structure of the power system after adding a second clutch;

[0032] Figure 4 for Figure 3 A schematic diagram of the structure of the differential of the power system shown in FIG.

[0033] Figure 5 for Figure 3 The schematic diagram of the structure after the third clutch is added to the power system shown in FIG.

[0034] Figure 6 for Figure 2 The schematic diagram of the structure of the power system shown in FIG. 1 is a schematic diagram of the structure of the power system after the fourth clutch is added;

[0035] Figure 7 for Figure 6 The schematic diagram of the structure of the power system shown in FIG. 1 is a schematic diagram of the structure after the third clutch is added.

[0036] Reference numerals:

[0037] 100, electrical equipment; 10, equipment body; 20, first wheel; 30, power system; 40, second wheel; 50, third wheel; 60, fourth wheel;

[0038] 31. first wheel driving member; 32. first motor; 33. engine; 34. first speed reducer; 35. differential; 35A. input end; 35B. first output end; 35C. second output end; 351. driving gear; 352. driven gear; 353. planet carrier; 354. first planetary gear; 355. second planetary gear; 356. first output gear; 357. second output gear; 358. first transmission member; 359. second transmission member;

[0039] 36. Battery; 37. First clutch; 38. Second motor; 39. Second wheel drive member;

[0040] 3A, second reducer; 3B, third motor; 3C, third wheel drive; 3D, fourth motor; 3E, fourth wheel drive; 3F, third reducer; 3G, fourth reducer; 3H, second clutch; 3K, third clutch; 3L, fifth reducer; 3M, fourth clutch. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or relative positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application. Unless otherwise specified, the above-mentioned directional description can be flexibly set in the process of actual application under the condition that the relative positional relationship shown in the accompanying drawings is met.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In the present application, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, article or device including the element.

[0046] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0047] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0048] The present application provides an electric device 100. The electric device 100 may be an aircraft, a vehicle, etc. The present application is exemplified by taking the electric device 100 as a vehicle.

[0049] See also Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application. The electric device 100 may include a device body 10, a first wheel 20, and a power system 30. The first wheel 20 is rotatably connected to the device body 10. The power system 30 is connected to the device body 10. The power system 30 is used to drive the first wheel 20 to rotate, thereby driving the electric device 100 to travel.

[0050] For example, the electrical device 100 is a vehicle, and the device body 10 is a vehicle body. The vehicle may be a hybrid electric vehicle, a plug-in hybrid electric vehicle, an extended-range electric vehicle, etc. The vehicle may also be a car, a van, a bus, a truck, a trailer, etc.

[0051] The vehicle may include a plurality of wheels, for example, the number of wheels may be three, four, five, six, eight, etc. The present application is exemplified by the vehicle including four wheels.

[0052] For details, please refer to Figure 2 , Figure 2 Schematic diagram of the connection relationship between the power system 30 and the wheels provided in some embodiments of the present application. The four wheels are respectively a first wheel 20, a second wheel 40, a third wheel 50 and a fourth wheel 60, wherein, along the width direction of the vehicle, the first wheel 20 and the second wheel 40 are respectively rotatably connected to the two sides of the vehicle body, and the third wheel 50 and the fourth wheel 60 are also respectively connected to the two sides of the vehicle body. The power system 30 is connected to the four wheels in a transmission manner to drive the four wheels to rotate, thereby driving the vehicle to travel.

[0053] For example, one of the first wheel 20 and the second wheel 40 may be the left front wheel of the vehicle, and the other of the first wheel 20 and the second wheel 40 may be the right front wheel of the vehicle. That is, if the first wheel 20 is the left front wheel, the second wheel 40 is the right front wheel; or, if the first wheel 20 is the right front wheel, the second wheel 40 is the left front wheel.

[0054] One of the third wheel 50 and the fourth wheel 60 may be the left rear wheel of the vehicle, and the other of the third wheel 50 and the fourth wheel 60 may be the right rear wheel of the vehicle. That is, if the third wheel 50 is the left rear wheel, the fourth wheel 60 is the right rear wheel; or, if the third wheel 50 is the right rear wheel, the fourth wheel 60 is the left rear wheel.

[0055] In another exemplary embodiment, one of the first wheel 20 and the second wheel 40 may be the left rear wheel of the vehicle, and the other of the first wheel 20 and the second wheel 40 may be the right rear wheel of the vehicle. That is, if the first wheel 20 is the left rear wheel, the second wheel 40 is the right rear wheel; or, if the first wheel 20 is the right rear wheel, the second wheel 40 is the left rear wheel.

[0056] One of the third wheel 50 and the fourth wheel 60 may be the left front wheel of the vehicle, and the other of the third wheel 50 and the fourth wheel 60 may be the right front wheel of the vehicle. If the third wheel 50 is the left front wheel, the fourth wheel 60 is the right front wheel; or if the third wheel 50 is the right front wheel, the fourth wheel 60 is the left front wheel.

[0057] It should be noted that the directions such as left front, right front, left rear, and right rear mentioned in this application are defined with the front of the vehicle as the front and the rear of the vehicle as the rear.

[0058] The power system 30 will be described in detail below with reference to the accompanying drawings.

[0059] Please continue reading Figure 2 The power system 30 includes a first wheel driving member 31, a first motor 32 (such as Figure 2 The first wheel driving member 31 is connected to the first wheel 20 in a transmission manner, and is used to drive the first wheel 20 to rotate. The first wheel driving member 31 can be an axle-shaped structure, a rod-shaped structure, a plate-shaped structure, or an irregular structure. The present application is exemplified by the first wheel driving member 31 being in an axle shape. The first wheel driving member 31 can be directly connected to the first wheel 20, or can be connected to the first wheel 20 through other transmission structures.

[0060] The first motor 32 is connected to the first wheel drive member 31. For example, the first motor 32 can be connected to the first wheel drive member 31 through at least one first speed reducer 34. For another example, the first motor 32 can also be connected to the first wheel drive member 31 through a synchronous belt and synchronous wheel structure.

[0061] The engine 33 is connected to the first wheel drive member 31. For example, the engine 33 can be connected to the first wheel drive member 31 through a plurality of mutually meshing gear structures. For another example, the engine 33 can also be connected to the first wheel drive member 31 through a differential 35.

[0062] The present application is exemplified by the transmission connection between the engine 33 and the first wheel drive member 31 through the differential 35. Specifically, the differential 35 may include an input end 35A and a first output end 35B. The input end 35A is transmission-connected to the output end of the engine 33, and the first output end 35B is transmission-connected to the first wheel drive member 31.

[0063] Through the above configuration of the power system 30, the power system 30 can have a driving mode and an extended range mode. When the power system 30 is in the driving mode, at least one of the first motor 32 and the engine 33 works to drive the first wheel driving member 31 to rotate, and the first wheel driving member 31 drives the first wheel 20 to rotate.

[0064] That is, the driving mode may include an engine driving mode, a pure electric driving mode, and a hybrid driving mode. When the power system 30 is in the engine driving mode, the engine 33 works and the first motor 32 does not work. At this time, the engine 33 drives the first wheel driving member 31 to rotate, and the rotation of the first wheel driving member 31 causes the first wheel driving member 31 to drive the first wheel 20 to rotate, and the rotation of the first wheel 20 drives the vehicle to travel. When the power system 30 is in the pure electric driving mode, the engine 33 does not work, and the first motor 32 works. At this time, the first motor 32 drives the first wheel driving member 31 to rotate, so that the first wheel driving member 31 drives the first wheel 20 to rotate, and the rotation of the first wheel 20 drives the vehicle to travel. When the power system 30 is in the hybrid driving mode, the engine 33 and the first motor 32 both work. At this time, the engine 33 and the first motor 32 jointly drive the first wheel driving member 31 to rotate, so that the first wheel driving member 31 drives the first wheel 20 to rotate, and the rotation of the first wheel 20 drives the vehicle to travel.

[0065] In this way, the power system 30 can have multiple driving modes, and the driver can choose different driving modes to drive the vehicle as needed, which can improve the driving performance and driving pleasure of the vehicle. In addition, the pure electric driving mode can improve the energy-saving and emission-reduction performance of the vehicle and reduce the pollution of the vehicle to the environment; the engine driving mode and the hybrid driving mode can improve the endurance performance of the vehicle and improve the driving experience of the driver.

[0066] When the power system 30 is in the range-extending mode, the engine 33 is in operation and the first motor 32 is used to generate electricity. At this time, the engine 33 drives the first wheel drive member 31 to rotate, and the rotation of the first wheel drive member 31 causes the first wheel drive member 31 to drive the rotor of the first motor 32 to rotate, so that the first motor 32 generates electricity.

[0067] The electric energy generated when the engine 33 drives the first motor 32 to generate electricity can be directly supplied to other electrical components such as other motors driving the vehicle, or can be stored in a battery. Figure 2The power system 30 further includes a battery 36, which is electrically connected to the first motor 32. When the power system 30 is in the extended range mode, the first motor 32 is controlled to charge the battery 36. In this way, it can be ensured that the battery 36 has sufficient power to power the electrical components of the vehicle and improve the endurance of the vehicle. In addition, when the first motor 32 drives the first wheel drive member 31 to rotate, the battery 36 can also power the first motor 32 to ensure the normal operation of the first motor 32.

[0068] In the present application, the first wheel driving member 31 is driven to rotate by the engine 33, so that the first wheel driving member 31 drives the rotor of the first motor 32 to rotate, thereby generating electricity by the first motor 32. The power system 30 does not need to be equipped with a generator to generate electricity, thereby simplifying the structure of the power system 30, reducing the space occupied by the power system 30, and further facilitating the arrangement of various components in the vehicle, so as to reasonably utilize the space of the vehicle.

[0069] The engine 33 and the first motor 32 may be arranged in a cabin. The cabin may be arranged at the front of the vehicle or at the rear of the vehicle.

[0070] On this basis, in order to prevent the engine 33 from driving the first motor 32 to generate electricity while also driving the first wheel 20 to rotate, thereby affecting the power generation efficiency of the first motor 32. In some embodiments, please continue to refer to Figure 2 , the power system 30 further includes a first clutch 37. The first clutch 37 is disposed between the first wheel driving member 31 and the first wheel 20. In this way, when the power system 30 is in the driving mode, the first clutch 37 can be controlled to be closed. At this time, the first wheel driving member 31 is connected to the first wheel 20 through the first clutch 37, and at least one of the engine 33 and the first motor 32 is working, and both can drive the first wheel driving member 31 to rotate, and the first wheel driving member 31 drives the first wheel 20 to rotate.

[0071] When the power system 30 is in the range-extending mode, the first clutch 37 can be controlled to be disconnected. At this time, the first wheel driving member 31 is disconnected from the first wheel 20 through the first clutch 37. When the engine 33 drives the first wheel driving member 31 to rotate, the first wheel driving member 31 can only drive the rotor of the first motor 32 to rotate, so that the first motor 32 generates electricity, and will not drive the first wheel 20 to rotate, so that the engine 33 can use more power to drive the first motor 32 to generate electricity, so as to improve the power generation efficiency of the first motor 32.

[0072] In addition, in order to improve the vehicle's power performance. Figure 2 In some embodiments, the power system 30 further includes a second motor 38 (eg Figure 2The second wheel driving member 39 is connected to the second motor 38 and the second wheel driving member 39. The second wheel driving member 39 is used to drive the second wheel 40 to rotate.

[0073] In some examples, the differential 35 further includes a second output end 35C, which is transmission-connected to the second wheel drive member 39, so that the engine 33 is transmission-connected to the second wheel drive member 39 through the differential 35. The second output end 35C can be directly connected to the second wheel drive member 39, or can be connected to the second wheel drive member 39 through other transmission components. Through the setting of the differential 35, the engine 33 and the first wheel drive member 31, as well as the engine 33 and the second wheel drive member 39 can be transmission-connected at the same time through the differential 35, so as to reduce the complexity of the connection between the engine 33, the first wheel drive member 31 and the second wheel drive member 39, thereby simplifying the structure of the power system 30.

[0074] In some examples, the second motor 38 may be connected to the second wheel drive member 39 through at least one second reducer 3A. In other examples, the second motor 38 may also be connected to the second wheel drive member 39 through a synchronous belt and synchronous wheel structure.

[0075] In some examples, the second wheel drive member 39 may be an axle-shaped structure, a rod-shaped structure, a plate-shaped structure, or an irregular structure, etc. This application is exemplified by the axle-shaped second wheel drive member 39. The second wheel drive member 39 may be directly connected to the second wheel 40, or may be connected to the second wheel 40 through other transmission structures.

[0076] Through the above configuration, when the power system 30 is in the engine drive mode, the first motor 32 and the second motor 38 are not working, and the engine 33 is working to drive the first wheel drive member 31 and the second wheel drive member 39 to rotate, the first wheel drive member 31 drives the first wheel 20 to rotate, and the second wheel drive member 39 drives the second wheel 40 to rotate, thereby driving the vehicle to travel. When the power system 30 is in the pure electric drive mode, the engine 33 is not working, and the first motor 32 and the second motor 38 are working; the first motor 32 drives the first wheel drive member 31 to rotate, so as to drive the first wheel 20 to rotate. The second motor 38 drives the second wheel drive member 39 to rotate, so as to drive the second wheel 40 to rotate. The rotation of the first wheel 20 and the rotation of the second wheel 40 can drive the vehicle to travel. When the power system 30 is in the hybrid drive mode, the engine 33, the first motor 32 and the second motor 38 are all working to simultaneously drive the first wheel drive member 31 and the second wheel drive member 39 to rotate, the first wheel drive member 31 drives the first wheel 20 to rotate, and the second wheel drive member 39 drives the second wheel 40 to rotate. The second motor 38 may be electrically connected to the battery 36 , and the battery 36 supplies power to the second motor 38 , so that the second motor 38 drives the second wheel driving member 39 to rotate.

[0077] In this way, when the power system 30 is in the pure electric drive mode or the hybrid drive mode, the second motor 38 is added to drive the vehicle, thereby improving the vehicle's power performance and improving the driver's experience.

[0078] Furthermore, when the power system 30 is in the extended-range mode, the second motor 38 can also be operated to drive the vehicle, so that the second motor 38 can share the driving pressure of the engine 33 to improve the efficiency of the engine 33 driving the first motor 32 to generate electricity.

[0079] At this time, in order to further improve the power performance of the vehicle, in some embodiments, please continue to refer to Figure 2 The power system 30 also includes a third motor 3B (such as Figure 2 The motor M3 in the embodiment, the third wheel drive member 3C, the fourth motor 3D (such as Figure 2 The motor M4 in the embodiment and the fourth wheel drive member 3E.

[0080] The third motor 3B is connected to the third wheel drive member 3C. For example, the third motor 3B can be connected to the third wheel drive member 3C through at least one third speed reducer 3F. For another example, the third motor 3B can also be connected to the third wheel drive member 3C through a synchronous belt and synchronous wheel structure.

[0081] The third wheel driving member 3C is connected to the third wheel 50 by transmission, and is used to drive the third wheel 50 to rotate. Exemplarily, the third wheel driving member 3C can be an axle-shaped structure, a rod-shaped structure, a plate-shaped structure or an irregular structure. The present application is exemplified by the third wheel driving member 3C being in an axle shape. The third wheel driving member 3C can be directly connected to the third wheel 50, or can be connected to the third wheel 50 through other transmission structures.

[0082] The fourth motor 3D is connected to the fourth wheel drive member 3E. For example, the fourth motor 3D can be connected to the fourth wheel drive member 3E through at least one fourth speed reducer 3G. For another example, the fourth motor 3D can also be connected to the fourth wheel drive member 3E through a synchronous belt and synchronous wheel structure.

[0083] The fourth wheel drive member 3E is connected to the fourth wheel 60 by transmission, and is used to drive the fourth wheel 60 to rotate. Exemplarily, the fourth wheel drive member 3E can be an axle-shaped structure, a rod-shaped structure, a plate-shaped structure or an irregular structure. The present application is exemplified by the fourth wheel drive member 3E being in an axle shape. The fourth wheel drive member 3E can be directly connected to the fourth wheel 60, or can be connected to the fourth wheel 60 through other transmission structures.

[0084] Through the above arrangement, when the power system 30 is in a driving mode (including an engine driving mode, a pure electric driving mode, and a hybrid driving mode) or an extended range mode, the third motor 3B and the fourth motor 3D can be controlled to work. At this time, the third motor 3B drives the third wheel drive 3C to rotate, and the rotation of the third wheel drive 3C causes the third wheel drive 3C to drive the third wheel 50 to rotate. The fourth motor 3D drives the fourth wheel drive 3E to rotate, and the rotation of the fourth wheel drive 3E causes the fourth wheel drive 3E to drive the fourth wheel 60 to rotate. The rotation of the third wheel 50 and the fourth wheel 60 can drive the vehicle to travel. Among them, the third motor 3B is electrically connected to the battery 36, and the fourth motor 3D is electrically connected to the battery 36, so as to power the third motor 3B and the fourth motor 3D through the battery 36, so as to facilitate the third motor 3B to drive the third wheel drive 3C to rotate, and facilitate the fourth motor 3D to drive the fourth wheel drive 3E to rotate.

[0085] In this way, when the power system 30 is in the driving mode or the range-extending mode, the third motor 3B and the fourth motor 3D are added to drive the vehicle, thereby further improving the vehicle's power performance and the driver's experience. In addition, when the power system 30 is in the range-extending mode, the third motor 3B and the fourth motor 3D can further share the driving pressure of the engine 33 to further improve the efficiency of the engine 33 driving the first motor 32 to generate electricity.

[0086] In addition, when the vehicle is braking or coasting, the rotor of the first motor 32 can be driven to rotate by the first wheel 20, the rotor of the second motor 38 can be driven to rotate by the second wheel 40, the rotor of the third motor 3B can be driven to rotate by the third wheel 50, and the rotor of the fourth motor 3D can be driven to rotate by the fourth wheel 60, so that the first motor 32, the second motor 38, the third motor 3B and the fourth motor 3D can all generate electricity, thereby further improving the power generation efficiency. The electric energy generated by the first motor 32, the second motor 38, the third motor 3B and the fourth motor 3D can all be transmitted to the battery 36 to charge the battery 36.

[0087] On this basis, when the power system 30 is in the range-extending mode, the engine 33 is used only to drive the first motor 32 to generate electricity, so as to further improve the power generation efficiency of the first motor 32. Figure 3 , Figure 3 for Figure 2 The power system 30 shown in FIG. 1 is a schematic diagram of a structure after adding a second clutch. The power system 30 also includes a second clutch 3H. The second clutch 3H is arranged between the engine 33 and the second wheel drive member 39. Specifically, the second clutch 3H is arranged between the second output end 35C of the differential 35 and the second wheel drive member 39. In some examples, the second clutch 3H and the differential 35 can be an integral structure, that is, the differential 35 has a clutch function. For example, the differential 35 is an electronic disconnect differential.

[0088] In this way, when the power system 30 is in the engine drive mode or the hybrid drive mode, the second clutch 3H can be controlled to close. At this time, the differential 35 is connected to the second wheel drive member 39 through the second clutch 3H, and the first wheel drive member 31 is disconnected from the first wheel 20 through the first clutch 37, so the engine drive mode or the hybrid drive mode of the power system 30 can be realized. Specifically, the power transmission process of the engine drive mode is similar to Figure 2 The power transmission process of the engine driving mode in the power system 30 shown is the same, and the power transmission process of the hybrid driving mode is the same as Figure 2 The power transmission process of the hybrid driving mode in the power system 30 shown is the same and will not be repeated here.

[0089] When the power system 30 is in the extended range mode, the second clutch 3H is controlled to be disconnected. At this time, the differential 35 is disconnected from the second wheel drive member 39 through the second clutch 3H, and because the first wheel drive member 31 is disconnected from the first wheel 20 through the first clutch 37, when the engine 33 drives the first motor 32 to generate electricity, the output power of the engine 33 can be fully used to drive the first motor 32 to generate electricity, thereby improving the power generation efficiency of the first motor 32, and further improving the charging efficiency when the first motor 32 charges the battery 36.

[0090] Furthermore, at this time, the second motor 38 can be operated. The second motor 38 drives the second wheel driving member 39 to rotate, so as to drive the second wheel 40 to rotate, and the second wheel 40 rotates to drive the vehicle to travel. The third motor 3B and the fourth motor 3D can also be operated to drive the third wheel 50 and the fourth wheel 60 to rotate, so as to drive the vehicle to travel. In this way, the power generation efficiency of the first motor 32 can be ensured, and the vehicle can also have sufficient power to improve the driving experience.

[0091] In addition, when the power system 30 is in the pure electric drive mode, the second clutch 3H can also be controlled to be disconnected. At this time, the differential 35 is disconnected from the second wheel drive 39 through the second clutch 3H, and because the first wheel drive 31 is connected to the first wheel 20 through the first clutch 37, the first motor 32 can only drive the first wheel drive 31 to rotate alone, and the second motor 38 can only drive the second wheel drive 39 to rotate alone, that is, the output power of the first motor 32 will not be transmitted to the second wheel drive 39, and the output power of the second motor 38 will not be transmitted to the first wheel drive 31. In this way, the first wheel 20 and the second wheel 40 are driven by separate motors, which is convenient for the power distribution of the power system 30, thereby improving the energy utilization efficiency and the overall performance of the vehicle.

[0092] Furthermore, the third wheel 50 may be driven solely by the third motor 3B, and the fourth wheel 60 may be driven solely by the fourth motor 3D, so as to further improve the energy utilization efficiency and the overall performance of the vehicle.

[0093] At this time, in order to avoid the first motor 32 driving the first wheel 20 to rotate, it also drives the engine 33 to reverse and cause energy waste of the first motor 32. Figure 4 , Figure 4 for Figure 3 Schematic diagram of the structure of the differential 35 of the power system 30 shown in FIG. The differential 35 includes a driving gear 351, a driven gear 352, a planet carrier 353, a first planetary gear 354, a second planetary gear 355, a first output gear 356, a second output gear 357, a first transmission member 358 and a second transmission member 359.

[0094] The driving gear 351 is drivingly connected to the engine 33. The driving gear 351 can be drivingly connected to the output end of the engine 33 through a connecting shaft, or can be drivingly connected to the output end of the engine 33 through other transmission structures.

[0095] The driven gear 352 meshes with the driving gear 351. For example, the driving gear 351 is a spur gear, and the driven gear 352 is also a spur gear. For another example, the driving gear 351 is a helical gear, and the driven gear is also a helical gear.

[0096] The planet carrier 353 is connected to the driven gear 352. For example, along the axial direction of the driven gear 352, the planet carrier 353 is connected to one side surface of the driven gear 352.

[0097] The first planetary gear 354 and the second planetary gear 355 are arranged opposite to each other along a first direction and are rotatably connected to the planetary carrier 353 respectively. The first direction is perpendicular to the axial direction of the driven gear 352. Exemplarily, the first planetary gear 354 and the second planetary gear 355 are both helical gears.

[0098] Along the axial direction of the driven gear 352, the first output gear 356 and the second output gear 357 are arranged opposite to each other, and the second output gear 357 is located between the first output gear 356 and the driven gear 352. Exemplarily, the axis of the driven gear 352, the axis of the second output gear 357 and the axis of the first output gear 356 coincide. The first output gear 356 and the first planetary gear 354 are meshed, and the first output gear 356 and the second planetary gear 355 are meshed. The second output gear 357 and the first planetary gear 354 are meshed, and the second output gear 357 and the second planetary gear 355 are meshed. Exemplarily, the first output gear 356 and the second output gear 357 are both helical gears.

[0099] One end of the first transmission member 358 is connected to the first output gear 356, and the other end of the first transmission member 358 is connected to the first wheel driving member 31. For example, the first transmission member 358 can be an axle-shaped structure, a rod-shaped structure, a plate-shaped structure or an irregular structure, etc. This application is exemplified by taking the first transmission member 358 as an axle.

[0100] One end of the second transmission member 359 is connected to the second output gear 357, and the other end of the second transmission member 359 is connected to the second clutch 3H, that is, the second clutch 3H is connected between the other end of the second transmission member 359 and the second wheel driving member 39. Exemplarily, the second transmission member 359 can be an axial structure, a rod structure, a plate structure or an irregular structure, etc. This application is exemplified by the second transmission member 359 being in an axial shape.

[0101] Through the above arrangement, when the power system 30 is in the pure electric drive mode, when the first motor 32 drives the first wheel driving member 31 to rotate, the first wheel driving member 31 will drive the first wheel 20 to rotate, and at the same time, it will also drive the first transmission member 358 to rotate. The rotation of the first transmission member 358 will drive the first output gear 356 to rotate, and the first output gear 356 will drive the second output gear 357 to rotate through the first planetary gear 354 and the second planetary gear 355, thereby driving the second transmission member 359 to rotate. At this time, since the second clutch 3H is disconnected, the second transmission member 359 is idling, that is, the second motor 38 will not apply power to the second transmission member 359.

[0102] In addition, when the first output gear 356 drives the second output gear 357 to rotate through the first planetary gear 354 and the second planetary gear 355, the first planetary gear 354 and the second planetary gear 355 will also generate thrust on the planet carrier 353, so that the planet carrier 353 has a tendency to rotate, and then the driven gear 352 and the driving gear 351 have a tendency to rotate. The rotation trend of the driving gear 351 will make the engine 33 have a tendency to rotate, but because the engine 33 has a large reverse braking torque, the driving gear 351 will not drive the engine 33 to rotate, that is, the first motor 32 will not drive the engine 33 to rotate when driving the first wheel drive member 31 to rotate, so that most of the power of the first motor 32 can be used to drive the first wheel drive member 31 to rotate, thereby improving the driving efficiency of the first motor 32 and improving the power performance of the vehicle.

[0103] On this basis, when the power system 30 is in the pure electric driving mode, when the first motor 32 drives the first wheel driving member 31 to rotate, in order to reduce the resistance encountered by the first wheel driving member 31 when driving the first transmission member 358 to rotate, the driving efficiency of the first motor 32 can be further improved. Figure 5 , Figure 5 for Figure 3 1 is a schematic diagram of a structure after a third clutch is added to the power system 30 shown in FIG. 1 . The power system 30 further includes a third clutch 3K. The third clutch 3K is arranged between the input end 35A of the differential 35 and the output end of the engine 33.

[0104] In some examples, one end of the third clutch 3K is connected to the output end of the engine 33 , and the other end of the third clutch 3K is connected to the input end 35A of the differential 35 through the fifth speed reducer 3L.

[0105] Through the above arrangement, when the power system 30 is in the pure electric drive mode, the third clutch 3K can be controlled to be disconnected. At this time, the engine 33 is disconnected from the differential 35 through the third clutch 3K, and the first motor 32 drives the first wheel drive member 31 to rotate, so that when the first wheel drive member 31 drives the first transmission member 358 to rotate, the first transmission member 358 will not apply a rotational force to the engine 33 through the first output gear 356, the first planetary gear 354, the second planetary gear 355, the planet carrier 353, the driven gear 352 and the driving gear 351, thereby reducing the resistance encountered when the first wheel drive member 31 drives the first transmission member 358 to rotate, so that the power output by the first motor 32 is more used to drive the first wheel 20 to rotate, thereby further improving the driving efficiency of the first motor 32.

[0106] When the power system 30 is in the engine drive mode, hybrid drive mode or extended range drive mode, the third clutch 3K can be controlled to close. At this time, the engine 33 is connected to the differential 35 through the third clutch 3K, and the power output by the engine 33 can be transmitted to the differential 35. In this way, when the power system 30 is in the engine drive mode or hybrid drive mode, the power transmitted from the engine 33 to the differential 35 can be further transmitted to the first wheel drive member 31 and the wheel drive member to drive the first wheel 20 and the second wheel 40 to rotate. When the power system 30 is in the extended range mode, the power transmitted from the engine 33 to the differential 35 can be further transmitted to the first wheel drive member 31, so that the first wheel drive member 31 drives the rotor of the first motor 32 to rotate, so that the first motor 32 generates electricity.

[0107] In other embodiments of the present application, in order to enhance the power generation performance of the power system 30, the vehicle's endurance is improved. Figure 6 , Figure 6 for Figure 2 The schematic diagram of the structure of the power system 30 shown in FIG. 3 is a schematic diagram of the structure of the power system 30 after adding the fourth clutch. Figure 6 The power system 30 shown is compared to Figure 3 The power system 30 shown in the figure has the second clutch 3H between the differential 35 and the second wheel drive 39 removed, but has a fourth clutch 3M added between the second wheel drive 39 and the second wheel 40. In addition, the engine 33, the differential 35, the first motor 32, the first motor 32 drive, the second motor 38, the second motor 38 drive, the third motor 3B, the third motor 3B drive, the fourth motor 3D, the fourth motor 3D drive and the battery 36 are all connected. Figure 3 The powertrain 30 shown is identical.

[0108] Specifically, the input end 35A of the differential 35 is connected to the output end of the engine 33 by transmission. The input end 35A of the differential 35 can be directly connected to the output end of the engine 33, or can be connected to the output end of the engine 33 through other transmission structures. The first output end 35B of the differential 35 is connected to the first wheel drive member 31 by transmission, and the second output end 35C of the differential 35 is connected to the second wheel drive member 39 by transmission. The fourth clutch 3M is provided between the second wheel drive member 39 and the second wheel 40.

[0109] In this way, when the power system 30 is in the engine drive mode, the pure electric drive mode or the hybrid drive mode, the fourth clutch 3M can be controlled to close. At this time, the second wheel drive member 39 is connected to the second wheel 40 through the fourth clutch 3M, and the first wheel drive member 31 is connected to the first wheel 20 through the first clutch 37. Therefore, the power system 30 can operate in the engine drive mode, the pure electric drive mode or the hybrid drive mode. Among them, the power transmission process of the power system 30 in the engine drive mode is the same as Figure 3 The power transmission process of the power system 30 in the engine driving mode is the same as that of the power system 30 in the pure electric driving mode. Figure 3 The power transmission process of the power system 30 in the pure electric driving mode is the same as that of the power system 30 in the hybrid driving mode. Figure 3 The power transmission process in the hybrid driving mode of the power system 30 shown is the same; it will not be repeated here.

[0110] Moreover, at this time, there are two range-extending modes of the power system 30, namely, the first range-extending mode and the second range-extending mode. When the power system 30 is in the first range-extending mode, the fourth clutch 3M can be controlled to be disconnected. At this time, the second wheel drive 39 is disconnected from the second wheel 40 through the second clutch 3H, and because the first wheel drive 31 is disconnected from the first wheel 20 through the first clutch 37. Therefore, the engine 33 works, the engine 33 drives the first wheel drive 31 and the second wheel drive 39 to rotate, the first wheel drive 31 drives the rotor direction of the first motor 32 to rotate, so that the first motor 32 generates electricity, and the second wheel drive 39 drives the rotor of the second motor 38 to rotate, so that the second motor 38 generates electricity. In other words, at this time, the first motor 32 and the second motor 38 can be driven by the engine 33 to generate electricity at the same time, thereby improving the power generation efficiency of the power system 30. Among them, the second motor 38 is electrically connected to the battery 36. The second motor 38 can generate electricity and store electrical energy in the battery 36. In this way, the battery 36 can be charged simultaneously by the first motor 32 and the second motor 38, which can improve the charging efficiency of the battery 36 and improve the endurance of the vehicle.

[0111] In addition, since the battery 36 can be charged simultaneously by the first motor 32 and the second motor 38, when the cabin space is small, the power of the first motor 32 and the second motor 38 can be made smaller to reduce the volume of the first motor 32 and the second motor 38, thereby reducing the space occupied by the first motor 32 and the second motor 38. When the cabin space is large, the power of the first motor 32 and the second motor 38 can be made larger to further improve the charging efficiency of the battery 36.

[0112] When the power system 30 is in the second range-extending mode, the fourth clutch 3M can be controlled to close. At this time, the second wheel drive 39 is connected to the second wheel 40 through the fourth clutch 3M, and the first wheel drive 31 is disconnected from the first wheel 20 through the first clutch 37. Therefore, the second motor 38 works, and the second motor 38 drives the second wheel drive 39 to rotate to drive the second wheel 40 to rotate. And the engine 33 works, and the engine 33 drives the first wheel drive 31 to rotate to drive the rotor of the first motor 32 to rotate, so that the first motor 32 generates electricity. That is, at this time, the second motor 38 is used to drive the second wheel 40 to rotate, and the first motor 32 is used to generate electricity. In this way, both the power demand of the vehicle and the endurance of the vehicle can be guaranteed.

[0113] On this basis, when the power system 30 is in the pure electric driving mode, in order to improve the power performance of the first motor 32 and the second motor 38. Figure 7 , Figure 7 for Figure 6 The schematic diagram of the structure of the power system 30 shown in FIG. 3 is a schematic diagram of the structure after the third clutch 3K is added. The power system 30 also includes a third clutch 3K. The third clutch 3K is arranged between the input end 35A of the differential 35 and the output end of the engine 33, that is, the input end 35A of the differential 35 is connected to the output end of the engine 33 through the third clutch 3K. In this way, when the power system 30 is in the engine drive mode, the hybrid drive mode or the extended range mode, the third clutch 3K can be controlled to close. At this time, the output end of the engine 33 is connected to the differential 35 through the third clutch 3K, so that the engine 33 can transmit power to the differential 35 to realize the engine drive mode, hybrid drive mode or extended range mode of the power system 30.

[0114] When the power system 30 is in the pure electric drive mode, the third clutch 3K can be controlled to be disconnected. At this time, the output end of the engine 33 is disconnected from the input end 35A of the differential 35 through the third clutch 3K. When the first motor 32 drives the first wheel drive member 31 to rotate, and the second motor 38 drives the second wheel drive member 39 to rotate, the first wheel drive member 31 and the second wheel drive member 39 will not generate thrust (i.e., the force that drives the engine 33 to rotate) to the engine 33 through the differential 35. Therefore, the engine 33 will not generate resistance to the first wheel drive member 31 and the second wheel drive member 39, so that the first motor 32 and the second motor 38 can use more power to drive the first wheel 20 and the second wheel 40 to rotate, so as to improve the power performance of the first motor 32 and the second motor 38.

[0115] On the other hand, the present application also provides a control method for a power system 30 .

[0116] Among them, Figure 2 In the illustrated power system 30, in some embodiments, the power system 30 includes a first wheel drive member 31, a first motor 32 and an engine 33, and at this time, the power system 30 has an extended range mode. The control method includes: when the power system 30 is in the extended range mode, the engine 33 works to drive the first wheel drive member 31 to rotate, and the first wheel drive member 31 drives the rotor of the first motor 32 to rotate, so that the first motor 32 generates electricity.

[0117] In addition, the power system 30 also has a driving mode. When the power system 30 is in the driving mode, at least one of the first motor 32 and the engine 33 works to drive the first wheel driving member 31 to rotate, and the first wheel driving member 31 drives the first wheel 20 to rotate.

[0118] In some embodiments, the power system 30 further includes a first clutch 37. At this time, the control method further includes: when the power system 30 is in the driving mode, controlling the first clutch 37 to close; when the power system 30 is in the extended range mode, controlling the first clutch 37 to open.

[0119] In some embodiments, the power system 30 further includes a second motor 38 and a second wheel drive 39. At this time, the driving mode includes an engine driving mode, a pure electric driving mode, and a hybrid driving mode. The control method also includes: when the power system 30 is in the engine driving mode, the first motor 32 and the second motor 38 are not working, and the engine 33 is working to drive the first wheel drive 31 and the second wheel drive 39 to rotate, the first wheel drive 31 drives the first wheel 20 to rotate, and the second wheel drive 39 drives the second wheel 40 to rotate. When the power system 30 is in the pure electric drive mode, the engine 33 does not work, and the first motor 32 and the second motor 38 work; the first motor 32 drives the first wheel drive member 31 to rotate to drive the first wheel 20 to rotate; the second motor 38 drives the second wheel drive member 39 to rotate to drive the second wheel 40 to rotate; when the power system 30 is in the hybrid drive mode, the engine 33, the first motor 32 and the second motor 38 all work to simultaneously drive the first wheel drive member 31 and the second wheel drive member 39 to rotate, the first wheel drive member 31 drives the first wheel 20 to rotate, and the second wheel drive member 39 drives the second wheel 40 to rotate.

[0120] exist Figure 3 In the power system 30 shown, in some embodiments, the power system 30 further includes a second clutch 3H. At this time, the control method further includes: when the power system 30 is in the pure electric drive mode, the second clutch 3H is controlled to be disconnected; when the power system 30 is in the extended range mode, the second clutch 3H is controlled to be disconnected, the second motor 38 is operated, and the second motor 38 drives the second wheel drive member 39 to rotate, so as to drive the second wheel 40 to rotate. When the power system 30 is in the engine drive mode or the hybrid drive mode, the second clutch 3H is controlled to be closed.

[0121] exist Figure 5 In the power system 30 shown, in some embodiments, the power system 30 further includes a third clutch 3K. At this time, the control method further includes: when the power system 30 is in the pure electric drive mode, controlling the third clutch 3K to be disconnected; when the power system 30 is in the engine drive mode, the hybrid drive mode or the extended range drive mode, controlling the third clutch 3K to be closed.

[0122] exist Figure 6In the power system 30 shown, in some embodiments, the power system 30 also includes a fourth clutch 3M, and at this time, the range-extending mode includes a first range-extending mode and a second range-extending mode. The control method also includes: when the power system 30 is in the engine drive mode, the pure electric drive mode or the hybrid drive mode, the fourth clutch 3M is controlled to be closed. When the power system 30 is in the first range-extending mode, the fourth clutch 3M is controlled to be disconnected, the engine 33 is operated, the engine 33 drives the second wheel drive member 39 to rotate, and the second wheel drive member 39 drives the rotor of the second motor 38 to rotate, so that the second motor 38 generates electricity. When the power system 30 is in the second range-extending mode, the fourth clutch 3M is controlled to be closed, the second motor 38 is operated, and the second motor 38 drives the second wheel drive member 39 to rotate, so as to drive the second wheel 40 to rotate.

[0123] exist Figure 7 In the power system 30 shown, in some embodiments, the power system 30 further includes a differential 35 and a third clutch 3K. At this time, the control method further includes: when the power system 30 is in the pure electric drive mode, the third clutch 3K is controlled to be disconnected; when the power system 30 is in the engine drive mode, the hybrid drive mode or the extended range mode, the third clutch 3K is controlled to be closed.

[0124] In some embodiments, the power system 30 further includes a third motor 3B, a third wheel drive 3C, a fourth motor 3D and a fourth wheel drive 3E. At this time, the control method further includes: when the power system 30 is in the driving mode or the extended range mode, controlling the third motor 3B and the fourth motor 3D to work; the third motor 3B drives the third wheel drive 3C to rotate, so as to drive the third wheel 50 to rotate; the fourth motor 3D drives the fourth wheel drive 3E to rotate, so as to drive the fourth wheel 60 to rotate.

[0125] In some embodiments, the power system 30 further includes a battery 36. At this time, the control method further includes: when the power system 30 is in the extended range mode, controlling the first motor 32 to charge the battery 36.

[0126] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A power system, characterized in that: include: Engine (33); A first motor (32); A first wheel driving member (31), the first motor (32) and the first wheel driving member (31), and the engine (33) and the first wheel driving member (31) are all in transmission connection; A first clutch (37), the first clutch (37) being arranged between the first wheel driving member (31) and the first wheel (20); A differential (35), the differential (35) comprising an input end (35A) and a first output end (35B), the input end (35A) being drivingly connected to the output end of the engine (33), and the first output end (35B) being drivingly connected to the first wheel driving member (31); a third clutch (3K), the third clutch (3K) being arranged between the input end (35A) and the output end of the engine (33); The third clutch (3K) is closed, the first clutch (37) is disconnected, the engine (33) is operated to drive the first wheel driving member (31) to rotate, and the first wheel driving member (31) drives the first motor (32) to generate electricity, so that the power system is in the extended range mode; The third clutch (3K) is disconnected, the first clutch (37) is closed, and the first motor (32) is operated to drive the first wheel driving member (31) to rotate, and the first wheel driving member (31) drives the first wheel (20) to rotate, so that the power system is in a pure electric drive mode.

2. The power system according to claim 1, characterized in that: The third clutch (3K) is closed, and the first clutch (37) is closed; The engine (33) works to drive the first wheel driving member (31) to rotate, and the first wheel driving member (31) drives the first wheel (20) to rotate, so that the power system is in an engine driving mode; Alternatively, the first motor (32) and the engine (33) both work to drive the first wheel driving member (31) to rotate, and the first wheel driving member (31) drives the first wheel (20) to rotate, so that the power system is in a hybrid drive mode.

3. The power system according to claim 2, characterized in that: Also includes: a second motor (38), A second wheel driving member (39), the engine (33) and the second wheel driving member (39), as well as the second motor (38) and the second wheel driving member (39) are all in transmission connection, and the second wheel driving member (39) is used to drive the second wheel (40) to rotate.

4. The power system according to claim 3, characterized in that: The first motor (32) and the second motor (38) are both not working, and the engine (33) is working to drive the first wheel drive member (31) and the second wheel drive member (39) to rotate, the first wheel drive member (31) drives the first wheel (20) to rotate, and the second wheel drive member (39) drives the second wheel (40) to rotate, so that the power system is in an engine drive mode; The engine (33) is not working, and the first motor (32) and the second motor (38) are working; the first motor (32) drives the first wheel driving member (31) to rotate, so as to drive the first wheel (20) to rotate; the second motor (38) drives the second wheel driving member (39) to rotate, so as to drive the second wheel (40) to rotate, so that the power system is in a pure electric drive mode; The engine (33), the first motor (32) and the second motor (38) all work to simultaneously drive the first wheel drive member (31) and the second wheel drive member (39) to rotate, the first wheel drive member (31) drives the first wheel (20) to rotate, and the second wheel drive member (39) drives the second wheel (40) to rotate, so that the power system is in a hybrid drive mode.

5. The power system according to claim 4, characterized in that: Also includes: A second clutch (3H), wherein the second clutch (3H) is provided between the engine (33) and the second wheel driving member (39).

6. The power system according to claim 5, characterized in that: The differential (35) includes a second output end (35C), and the second clutch (3H) is arranged between the second output end (35C) and the second wheel driving member (39).

7. The power system according to claim 6, characterized in that: The differential (35) comprises: A driving gear (351), the driving gear (351) being drivingly connected to the engine (33); A driven gear (352), the driven gear (352) meshing with the driving gear (351); A planet carrier (353), the planet carrier (353) being connected to the driven gear (352); A first planetary gear (354) and a second planetary gear (355), wherein the first planetary gear (354) and the second planetary gear (355) are arranged opposite to each other along a first direction and are rotatably connected to the planet carrier (353) respectively, and the first direction is perpendicular to the axial direction of the driven gear (352); A first output gear (356) and a second output gear (357), along the axial direction of the driven gear (352), the first output gear (356) and the second output gear (357) are arranged opposite to each other, and the second output gear (357) is located between the first output gear (356) and the driven gear (352); the first output gear (356) and the first planetary gear (354) are meshed, as are the first output gear (356) and the second planetary gear (355); the second output gear (357) and the first planetary gear (354) are meshed, as are the second output gear (357) and the second planetary gear (355); A first transmission member (358), one end of the first transmission member (358) is connected to the first output gear (356), and the other end of the first transmission member (358) is connected to the first wheel driving member (31); A second transmission member (359), one end of the second transmission member (359) is connected to the second output gear (357), and the other end of the second transmission member (359) is connected to the second clutch (3H).

8. The power system according to claim 6, characterized in that: The third clutch (3K) is closed, and the first clutch (37) and the second clutch (3H) are both closed, and the power system is in the engine drive mode or the hybrid drive mode; The third clutch (3K) is closed, the first clutch (37) and the second clutch (3H) are both disconnected, and the power system is in the extended-range mode; The third clutch (3K) is disconnected, the second clutch (3H) is disconnected, the first clutch (37) is closed, and the power system is in the pure electric drive mode.

9. The power system according to claim 4, characterized in that: Also includes: A fourth clutch (3M), the fourth clutch (3M) being arranged between the second wheel driving member (39) and the second wheel (40).

10. The power system according to claim 9, characterized in that: Also includes: A differential (35), the differential (35) comprising an input end (35A), a first output end (35B) and a second output end (35C), the first output end (35B) being drivingly connected to the first wheel drive member (31), and the second output end (35C) being drivingly connected to the second wheel drive member (39); A third clutch (3K), the third clutch (3K) is arranged between the input end (35A) and the output end of the engine (33).

11. The power system according to claim 10, characterized in that: The third clutch (3K) is disconnected, the fourth clutch (3M) and the first clutch (37) are both closed, and the power system is in the pure electric drive mode; The third clutch (3K) is closed, the fourth clutch (3M) and the first clutch (37) are both closed, and the power system is in the engine drive mode or the hybrid drive mode; The third clutch (3K) is closed, the fourth clutch (3M) and the first clutch (37) are both disconnected, and the power system is in a first range-extending mode; The third clutch (3K) is closed, the fourth clutch (3M) is closed, the first clutch (37) is disconnected, and the power system is in the second range-extending mode.

12. The power system according to any one of claims 1 to 11, characterized in that: Also includes: a third motor (3B); A third wheel driving member (3C), the third motor (3B) being connected to the third wheel driving member (3C), and the third wheel driving member (3C) being used to drive the third wheel (50) to rotate; Fourth motor (3D); A fourth wheel driving member (3E), the fourth motor (3D) is connected to the fourth wheel driving member (3E), and the fourth wheel driving member (3E) is used to drive the fourth wheel (60) to rotate.

13. The power system according to claim 12, characterized in that: The power system has an engine drive mode, a pure electric drive mode, a hybrid drive mode and an extended-range mode. When the power system is in any one of the engine drive mode, the pure electric drive mode, the hybrid drive mode and the extended-range mode, the third motor (3B) and the fourth motor (3D) are in operation; the third motor (3B) drives the third wheel drive component (3C) to rotate, so as to drive the third wheel (50) to rotate; the fourth motor (3D) drives the fourth wheel drive component (3E) to rotate, so as to drive the fourth wheel (60) to rotate.

14. The power system according to any one of claims 1 to 11, characterized in that: Also includes: A battery (36), wherein the first motor (32) is electrically connected to the battery (36).

15. The power system according to claim 14, characterized in that: When the power system is in the extended-range mode, the first motor (32) charges the battery (36).

16. An electrical equipment, characterized in that: include: Device body (10); a first wheel (20), the first wheel (20) being rotatably connected to the device body (10); The power system according to any one of claims 1 to 15, wherein the power system is connected to the equipment body (10), and the first wheel driving member (31) is drivingly connected to the first wheel (20).

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