Composite motor, hybrid power system and vehicle

Abstract

The invention discloses a composite motor, a hybrid power system and a vehicle, and relates to the technical field of vehicles, the composite motor comprises a radial magnetic flux motor and an axial magnetic flux motor, the radial magnetic flux motor comprises an input shaft and a first output shaft which are coaxially arranged, the radial magnetic flux motor further comprises a first stator, a first rotor and a second rotor which are arranged in the radial direction from outside to inside, one of the first rotor and the second rotor is fixedly arranged on the input shaft, the other of the first rotor and the second rotor is fixedly arranged on the first output shaft, and the axial magnetic flux motor comprises a second output shaft coaxial with the input shaft and the first output shaft. The axial magnetic flux motor further comprises a second stator and a third rotor which are arranged on the second output shaft in the axial direction. According to the technical scheme, a planet row type power assembly carried by a traditional series-parallel hybrid electric vehicle can be replaced, the overall structure is simpler, the axial size and the longitudinal height are reduced, and more space is reserved for arrangement of the whole vehicle.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a composite motor, a hybrid system and a vehicle. Background Art

[0002] As the world pays more attention to environmental protection and energy conservation, the research and development and application of new energy vehicles are increasingly attracting attention. Among them, hybrid electric vehicles (PHEV), as an important form of new energy vehicles, have gradually become the mainstream choice in the market with their flexible power system and low fuel consumption. Hybrid electric vehicles can achieve zero emissions to a certain extent, and optimize energy utilization efficiency through the coordinated work of internal combustion engines and electric motors, meeting consumers' needs for driving range and charging convenience.

[0003] As the battery capacity of hybrid vehicles increases, there are higher requirements for the miniaturization, integration and lightness of hybrid powertrains. However, the current mainstream hybrid models generally adopt the parallel or concentric shaft solution of P1+P3 dual motors, which leads to a high demand for the layout space of the assembly in the cabin. Summary of the invention

[0004] The main purpose of the present invention is to propose a composite motor, a hybrid system and a vehicle, aiming to at least solve the technical problem in the related art that the current mainstream hybrid vehicle powertrain has a high demand for layout space in the cabin.

[0005] To achieve the above object, the present invention provides a composite motor, comprising:

[0006] A radial flux motor, comprising an input shaft and a first output shaft arranged coaxially, the radial flux motor further comprising a first stator, a first rotor and a second rotor arranged radially from outside to inside, the first rotor can be powered by a power battery, one of the first rotor and the second rotor is fixedly arranged on the input shaft, and the other is fixedly arranged on the first output shaft, the input shaft is used to connect to an engine shaft, and the first output shaft is used to drive wheels; and,

[0007] The axial flux motor comprises a second output shaft coaxially arranged with the input shaft and the first output shaft, and the axial flux motor also comprises a second stator and a third rotor axially arranged on the second output shaft, and the second output shaft is used to drive wheels.

[0008] In one embodiment, one end of the first output shaft away from the input shaft is connected to the second output shaft, and the other end of the second output shaft is used to be connected to a wheel.

[0009] In one embodiment, the composite motor further includes a housing, the radial flux motor and the axial flux motor are both disposed in the housing, and the opposite ends of the input shaft and the second output shaft both extend outside the housing.

[0010] In one embodiment, a portion of a radial side wall of the housing constitutes the first stator.

[0011] In one embodiment, the compound motor further includes a clutch, and the first output shaft is connected to the second output shaft via the clutch.

[0012] In one embodiment, the first rotor is fixedly disposed on the input shaft, and the second rotor is fixedly disposed on the first output shaft.

[0013] In one embodiment, two second stators are provided, and the two second stators are respectively arranged on both sides of the third rotor in the axial direction.

[0014] The present invention also provides a hybrid system, comprising an engine, a compound motor and a battery assembly, wherein the engine has an engine shaft connected to the input shaft;

[0015] The composite motor comprises:

[0016] A radial flux motor, comprising an input shaft and a first output shaft arranged coaxially, the radial flux motor further comprising a first stator, a first rotor and a second rotor arranged radially from outside to inside, the first rotor can be powered by a power battery, one of the first rotor and the second rotor is fixedly arranged on the input shaft, and the other is fixedly arranged on the first output shaft, the input shaft is used to connect to an engine shaft, and the first output shaft is used to drive wheels; and,

[0017] An axial flux motor, comprising a second output shaft coaxially arranged with the input shaft and the first output shaft, the axial flux motor further comprising a second stator and a third rotor axially arranged on the second output shaft, the second output shaft being used to drive wheels;

[0018] The battery assembly includes a power battery and a rectifier and an inverter electrically connected to the power battery. The battery assembly also includes a collector ring arranged on the input shaft, the rectifier is electrically connected to the collector ring, and the inverter is electrically connected to the first rotor and the second stator.

[0019] In one embodiment, the engine shaft and the input shaft are coaxially arranged.

[0020] The present invention also provides a vehicle, comprising the above-mentioned hybrid system.

[0021] In the technical solution of the present invention, the composite motor includes a radial flux motor and an axial flux motor, the radial flux motor includes an input shaft and a first output shaft coaxially arranged, the radial flux motor also includes a first stator, a first rotor and a second rotor radially arranged from the outside to the inside, one of the first rotor and the second rotor is fixedly arranged on the input shaft, and the other is fixedly arranged on the first output shaft, the axial flux motor includes a second output shaft coaxially arranged with the input shaft and the first output shaft, and the axial flux motor also includes a second stator and a third rotor axially arranged on the second output shaft. With such an arrangement, one of the first rotor and the second rotor can cooperate with the engine to realize vehicle power generation when rotating, while the other can drive the first output shaft to rotate, and cooperate with the third rotor to drive the second output shaft to rotate, to continue driving the wheels, which can make the overall output torque larger; since the composite motor adopts a composite of the radial flux motor and the axial flux motor, its magnetic circuit has a relatively high independence and can avoid electromagnetic interference, so it can be adjusted to a specific number of poles; at the same time, it can replace the planetary powertrain equipped in traditional parallel-parallel hybrid vehicles, making the overall structure simpler, reducing the axial size and longitudinal height, and reserving more space for the layout of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 A schematic structural diagram of an embodiment of a hybrid system provided by the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of energy flow in pure electric high-energy mode of the medium hybrid system;

[0025] Figure 3 for Figure 1 Schematic diagram of energy flow in pure electric economy mode of a medium hybrid system;

[0026] Figure 4 for Figure 1 Schematic diagram of energy flow in series high-energy mode of a medium-hybrid system;

[0027] Figure 5 for Figure 1 Schematic diagram of energy flow in series economy mode of a medium hybrid system;

[0028] Figure 6 for Figure 1 Schematic diagram of energy flow in the energy recovery mode of the hybrid system;

[0029] Figure 7 for Figure 1 Schematic diagram of energy flow in idle power generation mode of a hybrid system;

[0030] Figure 8 for Figure 1 Schematic diagram of the working mode of the hybrid system.

[0031] Description of Figure Numbers:

[0032] 1000, hybrid system; 100, compound motor; 1, radial flux motor; 11, input shaft; 12, first output shaft; 13, first stator; 14, first rotor; 15, second rotor; 2, axial flux motor; 21, second output shaft; 22, second stator; 23, third rotor; 3, housing; 4, clutch;

[0033] 200, engine;

[0034] 300, battery assembly; 301, power battery; 302, rectifier; 303, inverter; 304, collector ring.

[0035] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] As the world pays more attention to environmental protection and energy conservation, the research and development and application of new energy vehicles are increasingly attracting attention. Among them, hybrid electric vehicles (PHEV), as an important form of new energy vehicles, have gradually become the mainstream choice in the market with their flexible power system and low fuel consumption. Hybrid electric vehicles can achieve zero emissions to a certain extent, and optimize energy utilization efficiency through the coordinated work of internal combustion engines and electric motors, meeting consumers' needs for driving range and charging convenience.

[0040] As the battery capacity of hybrid vehicles increases, there are higher requirements for the miniaturization, integration and lightweight of hybrid powertrains. The current mainstream hybrid models generally adopt the parallel axis or concentric axis solution of P1+P3 dual motors, which leads to higher requirements for the layout space of the assembly in the cabin. The parallel axis configuration increases the X and Z space of the whole machine, while the concentric axis configuration has higher requirements for the Y space.

[0041] The main purpose of the present invention is to propose a composite motor, a hybrid system and a vehicle, aiming to at least solve the technical problem in the related art that the current mainstream hybrid vehicle powertrain has a high demand for layout space in the cabin.

[0042] See also Figure 1In one embodiment of the present invention, the composite motor 100 includes a radial flux motor 1 and an axial flux motor 2, wherein the radial flux motor 1 includes an input shaft 11 and a first output shaft 12 which are coaxially arranged, and the radial flux motor 1 also includes a first stator 13, a first rotor 14 and a second rotor 15 which are radially arranged from the outside to the inside, wherein the first rotor 14 can be powered by a power battery 301, and one of the first rotor 14 and the second rotor 15 is fixedly arranged on the input shaft 11, and the other is fixedly arranged on the first output shaft 12, wherein the input shaft 11 is used to be connected to the engine 200 shaft, and the first output shaft 12 is used to drive the wheels; the axial flux motor 2 includes a second output shaft 21 which is coaxially arranged with the input shaft 11 and the first output shaft 12, and the axial flux motor 2 also includes a second stator 22 and a third rotor 23 which are axially arranged on the second output shaft 21, and the second output shaft 21 is used to drive the wheels.

[0043] In the technical solution of the present invention, the composite motor 100 includes a radial flux motor 1 and an axial flux motor 2, the radial flux motor 1 includes an input shaft 11 and a first output shaft 12 which are coaxially arranged, the radial flux motor 1 also includes a first stator 13, a first rotor 14 and a second rotor 15 which are radially arranged from the outside to the inside, one of the first rotor 14 and the second rotor 15 is fixedly arranged on the input shaft 11, and the other is fixedly arranged on the first output shaft 12, the axial flux motor 2 includes a second output shaft 21 which is coaxially arranged with the input shaft 11 and the first output shaft 12, and the axial flux motor 2 also includes a second stator 22 and a third rotor 23 which are axially arranged on the second output shaft 21. With such arrangement, one of the first rotor 14 and the second rotor 15 can cooperate with the engine 200 to realize the power generation of the whole vehicle when rotating, while the other can drive the rotation of the first output shaft 12 and cooperate with the third rotor 23 to drive the rotation of the second output shaft 21 to continue driving the wheels, which can make the overall output torque larger; since the compound motor 100 adopts the compound of the radial flux motor 1 and the axial flux motor 2, its magnetic circuit has relatively high independence and can avoid electromagnetic interference, so it can be adjusted to a specific number of poles; at the same time, it can replace the planetary gear powertrain equipped in traditional parallel-parallel hybrid vehicles, making the overall structure simpler, reducing the axial size and longitudinal height, and reserving more space for the layout of the whole vehicle.

[0044] The first output shaft 12 and the second output shaft 21 are both used to transmit power to the wheels. The first output shaft 12 and the second output shaft 21 can be distributed on both sides of the wheel shaft, or on the same side of the wheel shaft. When the first output shaft 12 and the second output shaft 21 are respectively on both sides of the wheel shaft, whether the vehicle is front-wheel drive or rear-wheel drive, the front or rear of the vehicle needs to have enough X-direction (i.e., length direction) space to arrange the compound motor 100, and the overall structure will be more complicated; therefore, in an embodiment of the present invention, one end of the first output shaft 12 away from the input shaft 11 is connected to the second output shaft 21, and the other end of the second output shaft 21 is used to connect to the wheel. In this way, the first output shaft 12 and the second output shaft 21 are connected, and the power is transmitted to the wheel through the second output shaft 21, that is, the first output shaft 12 and the second output shaft 21 are distributed on the same side of the wheel shaft, and the compound motor 100 is more convenient to arrange, and the requirement for the vehicle X-direction space is lower.

[0045] Further, when the first output shaft 12 and the second output shaft 21 are distributed on the same side of the wheel shaft, the radial flux motor 1 and the axial flux motor 2 can be arranged in the same shell or in separate shells. In an embodiment of the present invention, the composite motor 100 further includes a shell 3, and the radial flux motor 1 and the axial flux motor 2 are both arranged in the shell 3, and the opposite ends of the input shaft 11 and the second output shaft 21 are both penetrated to the outside of the shell 3. In this way, the radial flux motor 1 and the axial flux motor 2 are arranged in the same shell, and the two motors can share one shell 3, instead of each motor requiring a separate shell 3, which can reduce the volume of the shell 3 while making the overall structure simpler, which is conducive to the arrangement of the composite motor 100 on the vehicle; at the same time, in the same shell setting, the radial flux motor 1 and the axial flux motor 2 can share an oil pan, and the cooling efficiency can be improved by setting an oil tank on the shell 3. This design can cool the motor stator and rotor more effectively, because the oil tank can be connected to the oil pan to form an effective cooling system.

[0046] It is understandable that when the first stator 13 is arranged in the housing 3, the housing 3 will require a larger volume to accommodate the first stator 13, which is not conducive to the arrangement of the composite motor 100 in the vehicle. In an embodiment of the present invention, the portion of the radial side wall of the housing 3 constitutes the first stator 13; in this way, using the housing 3 as the stator can provide better structural stability, and the housing 3 can withstand greater mechanical stress and electromagnetic force, reducing the possibility of deformation and vibration; by arranging magnetic tiles in the housing 3, the spatial distribution of the magnetic tiles can be optimized on the basis of ensuring electromagnetic efficiency, thereby reducing the weight and volume of the magnetic tiles, and further reducing the weight and volume of the housing 3; and a cooling pipe or heat dissipation component can also be arranged on the housing 3, so that the coolant or air can effectively take away the heat generated by the first stator 13 when it is working, thereby improving the heat dissipation capacity of the radial flux motor 1.

[0047] When the first drive shaft and the second drive shaft are always connected, in the economic mode of the hybrid system 1000, that is, when only the second drive shaft of the axial flux motor 2 drives the wheels, the first drive shaft is always in a dragging state, which affects the economic operation of the whole vehicle and has high energy consumption. Therefore, in the embodiment of the present invention, the compound motor 100 also includes a clutch 4, and the first output shaft 12 is connected to the second output shaft 21 through the clutch 4; in this way, when the hybrid system 1000 is in the economic mode, the first output shaft 12 and the second output shaft 21 can be decoupled through the clutch 4 to prevent the first drive shaft from dragging the second drive shaft, and when the hybrid system 1000 is in the high energy mode, the first output shaft 12 and the second output shaft 21 can be connected through the clutch 4, and the radial flux motor 1 and the axial flux motor 2 drive the wheels together; that is, after the first output shaft 12 and the second output shaft 21 are connected through the clutch 4, the power mode can be adjusted dynamically in real time based on the SOC of the whole vehicle to achieve the lowest working energy consumption of the whole vehicle.

[0048] For the radial flux motor 1, the first rotor 14 is an outer rotor, and the second rotor 15 is an inner rotor, one of which is used for power generation and the other for driving; in some embodiments, the first rotor 14 can be used for power generation and the second rotor 15 can be used for driving, and in some embodiments, the first rotor 14 can be used for driving and the second rotor 15 can be used for power generation. In an embodiment of the present invention, the first rotor 14 is fixedly arranged on the input shaft 11, and the second rotor 15 is fixedly arranged on the first output shaft 12.

[0049] When only one second stator 22 is provided for the axial flux motor 2, there will be a unilateral magnetic pull problem caused by the axial air gap eccentricity, and this problem will cause the rotation of the third rotor 23 to be unbalanced, thereby causing the axial flux motor 2 to generate relatively large vibration and noise, and accelerate the wear of the bearings. In order to solve the unilateral magnetic pull problem caused by the axial air gap eccentricity, in an embodiment of the present invention, two second stators 22 are provided, and the two second stators 22 are arranged on both sides of the third rotor 23 in the axial direction. Such a setting can effectively solve the problem of balancing the magnetic pull on both sides of the third rotor 23, making the rotation of the third rotor 23 more stable, reducing noise and vibration, and reducing wear.

[0050] The present invention also proposes a hybrid system 1000, which includes an engine 200, a compound motor 100 and a battery assembly 300. The specific structure of the compound motor 100 refers to the above embodiment. Since the hybrid system 1000 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the engine 200 has an engine 200 shaft, and the engine 200 shaft is connected to the input shaft 11. The battery assembly 300 includes a power battery 301 and a rectifier 302 and an inverter 303 electrically connected to the power battery 301. The battery assembly 300 also includes a collector ring 304 arranged on the input shaft 11, the rectifier 302 is electrically connected to the collector ring 304, and the inverter 303 is electrically connected to the first rotor 14 and the second stator 22.

[0051] In the technical solution of the present invention, one of the first rotor 14 and the second rotor 15 can cooperate with the engine 200 to realize the power generation of the whole vehicle when rotating, and the other can drive the rotation of the first output shaft 12, and cooperate with the third rotor 23 to drive the rotation of the second output shaft 21 to continue driving the wheels, so that the overall output torque can be larger; since the composite motor 100 adopts the composite of the radial flux motor 1 and the axial flux motor 2, its magnetic circuit has relatively high independence and can avoid electromagnetic interference, so it can be adjusted to a specific number of poles; at the same time, it can replace the planetary powertrain equipped in traditional hybrid hybrid vehicles, making the overall structure simpler, reducing the axial size and longitudinal height, and reserving more space for the layout of the whole vehicle.

[0052] The engine 200 shaft and the input shaft 11 may be coaxially arranged or not coaxially arranged. When the engine 200 and the input shaft 11 are not coaxially arranged, an additional transmission structure is required to connect the engine 200 shaft and the input shaft 11, which makes the structure more complicated and occupies more space. Therefore, in the embodiment of the present invention, the engine 200 shaft and the input shaft 11 are coaxially arranged.

[0053] In one embodiment, one end of the first output shaft 12 away from the input shaft 11 is connected to the second output shaft 21, and the other end of the second output shaft 21 is used to connect to the wheel; the compound motor 100 further includes a clutch 4, and the first output shaft 12 is connected to the second output shaft 21 through the clutch 4. In this embodiment, the first output shaft 12 and the second output shaft 21 can be coupled and separated through the clutch 4, so that the overall hybrid system 1000 has a higher degree of freedom, realizes more power modes, and can better meet the working conditions of the vehicle.

[0054] Please refer to Figure 1 as well as Figures 2 to 8 , a schematic diagram of energy flow of the hybrid system 1000 in various modes in this embodiment.

[0055] Specifically, please refer to Figure 1 , Figure 2 and Figure 8 When the hybrid system 1000 is in the pure electric high energy mode, the corresponding vehicle operating conditions are: rapid acceleration at start, low-medium speed driving, hill climbing acceleration, etc. This operating condition corresponds to the highest SOC (>40%), and the vehicle has a large output power demand; at this time, the engine 200 is in a stopped state, the clutch 4 is in a state of combining the first output shaft 12 and the second output shaft 21, and the second rotor 15 and the third rotor 23 are both in a working state, so as to achieve pure electric high load driving.

[0056] Please refer to Figure 1 , Figure 3 and Figure 8 When the hybrid system 1000 is in the pure electric economic mode, the corresponding vehicle operating conditions are: starting acceleration and low-medium speed driving. This operating condition corresponds to a high SOC (>20%). At this time, the clutch 4 disconnects the first output shaft 12 and the second output shaft 21, and the engine 200 and the radial flux motor 1 stop working. The vehicle can achieve pure electric driving through the axial flux motor 2.

[0057] Please refer to Figure 1 , Figure 4 and Figure 8, when the hybrid system 1000 is in the series high-energy mode, the corresponding vehicle conditions are as follows: the vehicle has a large output power demand, accelerating rapidly at medium to high speeds, climbing a high slope, or driving at the maximum speed. This condition corresponds to a relatively low SOC (10% < SOC < 20%). At this time, the clutch 4 engages the first output shaft 12 and the second output shaft 21, and the second rotor 15 and the axial flux motor 2 work together. To ensure the balance of the vehicle's SOC, the first rotor 14 and the engine 200 work to supplement electrical energy.

[0058] Please refer to Figure 1 、 Figure 5 and Figure 8 , when the hybrid system 1000 is in the series economy mode, the corresponding vehicle conditions are as follows: the vehicle has a large output power demand, accelerating for overtaking, accelerating at medium to high speeds, climbing a low slope, etc. This condition corresponds to a very low SOC (SOC < 10%). At this time, the clutch 4 disconnects the first output shaft 12 and the second output shaft 21, and the first rotor 14 and the engine 200 work to supplement electrical energy.

[0059] Please refer to Figure 1 、 Figure 6 and Figure 8 , when the hybrid system 1000 is in the energy recovery mode, the corresponding vehicle condition is when the vehicle brakes or coasts. Energy recovery is achieved by reversing the axial flux motor 2 and stored in the power battery 301.

[0060] Please refer to Figure 1 、 Figure 7 and Figure 8 , when the hybrid system 1000 is in the idle power generation mode, the corresponding vehicle condition is: generating power while idling. This condition corresponds to a relatively low SOC (< 20%), and when the power of the power battery 301 cannot maintain the vehicle's electrical power demand, the engine 200 starts at this time. The clutch 4 disconnects the first output shaft 12 and the second output shaft 21, and the engine 200 drives the first rotor 14 of the radial flux motor 1 to achieve the series range extender power generation function, which can supplement the battery to maintain the SOC power balance.

[0061] The present invention also proposes a vehicle, which includes a hybrid system 1000. The specific structure of the hybrid system 1000 refers to the above embodiments. Since this vehicle uses all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0062] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention and the drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A composite motor, characterized in that: include: A radial flux motor, comprising an input shaft and a first output shaft arranged coaxially, the radial flux motor further comprising a first stator, a first rotor and a second rotor arranged radially from outside to inside, the first rotor can be powered by a power battery, one of the first rotor and the second rotor is fixedly arranged on the input shaft, and the other is fixedly arranged on the first output shaft, the input shaft is used to connect to an engine shaft, and the first output shaft is used to drive wheels; and, The axial flux motor comprises a second output shaft coaxially arranged with the input shaft and the first output shaft, and the axial flux motor also comprises a second stator and a third rotor axially arranged on the second output shaft, and the second output shaft is used to drive wheels.

2. The composite motor according to claim 1, characterized in that: One end of the first output shaft away from the input shaft is connected to the second output shaft, and the other end of the second output shaft is used to be connected to a wheel.

3. The composite motor according to claim 2, characterized in that: The composite motor further comprises a housing, the radial flux motor and the axial flux motor are both arranged in the housing, and the opposite ends of the input shaft and the second output shaft both extend through the housing.

4. The composite motor according to claim 3, characterized in that: A portion of the side wall of the housing in the radial direction constitutes the first stator.

5. The composite motor according to claim 2, characterized in that: The compound motor further includes a clutch, and the first output shaft is connected to the second output shaft via the clutch.

6. The composite motor according to claim 1, characterized in that: The first rotor is fixedly disposed on the input shaft, and the second rotor is fixedly disposed on the first output shaft.

7. The composite motor according to claim 1, characterized in that: Two second stators are provided, and the two second stators are respectively arranged on both sides of the third rotor in the axial direction.

8. A hybrid system, characterized in that: include: an engine having an engine shaft connected to the input shaft; as well as, A composite motor, which is a composite motor as claimed in any one of claims 1 to 7; A battery assembly includes a power battery and a rectifier and an inverter electrically connected to the power battery. The battery assembly also includes a collector ring arranged on the input shaft, the rectifier is electrically connected to the collector ring, and the inverter is electrically connected to the first rotor and the second stator.

9. The hybrid system according to claim 8, characterized in that: The engine shaft and the input shaft are coaxially arranged.

10. A vehicle, characterized in that: Comprising a hybrid system as claimed in claim 8 or 9.

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