Axial flux motor, system and vehicle

Abstract

The invention provides an axial magnetic flux motor, a system and a vehicle, and relates to the technical field of driving motors, according to the axial magnetic flux motor provided by the invention, through cooperation of a first rotor assembly and a second rotor assembly, two independent power units can respectively drive different torque output ends, the flexibility of power distribution can be improved, and the reliability of the motor is improved. And the driving requirements under different working conditions are met. Besides, the first rotating shaft, the second rotating shaft and the core shaft cooperate with each other, so that the power can be more uniformly distributed among a plurality of torque output ends, the load pressure borne by a single motor is reduced, more accurate power control is realized, and the driving performance and the safety of the motor are improved.

Description

Technical Field

[0001] The present application relates to the technical field of drive motors, and in particular to an axial flux motor, system and vehicle. Background Art

[0002] In recent years, the rapid development of new energy vehicles has highlighted their advantages in environmental protection and energy utilization. Traditional four-wheel drive systems usually rely on complex mechanical structures, such as central differentials, transfer cases, and drive shafts. Although this type of design can provide good power distribution and handling performance, due to its complex structure, large size, and high weight, it not only increases manufacturing costs, but also has limitations in improving energy efficiency. In order to simplify the structure, reduce energy consumption, and improve reliability, single-motor drive systems have gradually become a hot topic of research.

[0003] Existing single-motor four-wheel drive systems usually use mechanical clutches or hydraulic couplings to achieve power distribution between the front and rear axles. However, these solutions still have certain limitations in terms of response speed, transmission efficiency and stability. In addition, in terms of power distribution flexibility and driving mode switching, current technology is difficult to fully adapt to complex road conditions and high-performance driving needs.

[0004] Therefore, the present application provides a new axial flux motor. Summary of the invention

[0005] In view of the above problems, the embodiments of the present application provide an axial flux motor, a system and a vehicle to overcome the above problems or at least partially solve the above problems.

[0006] In a first aspect of the present application, an axial flux motor is provided, comprising: a housing, and a stator assembly, a first rotor assembly, a second rotor assembly, and a rotating shaft assembly arranged inside the housing; The stator assembly is fixedly connected to the housing, and the stator assembly includes a first mounting portion and a second mounting portion, and windings are disposed on the first mounting portion and the second mounting portion; The first rotor assembly includes a first rotor and a second rotor that are arranged opposite to each other, and the second rotor assembly includes a third rotor and a fourth rotor that are arranged opposite to each other, wherein the positions of the first rotor and the second rotor correspond to the first mounting portion, and the positions of the third rotor and the fourth rotor correspond to the second mounting portion; The rotating shaft assembly comprises: a first rotating shaft, a second rotating shaft and at least one core shaft; The first rotor is connected to the first rotating shaft, the second rotor is connected to the second rotating shaft, the third rotor and the fourth rotor are respectively connected to at least one of the core shafts, and the first rotating shaft, the second rotating shaft and at least one of the core shafts respectively correspond to a torque output end.

[0007] Optionally, the mandrel comprises a first mandrel; The third rotor and the fourth rotor are both sleeved on the first core shaft and fixedly connected to the first core shaft. The first core shaft passes through the second mounting portion and extends out of the housing.

[0008] Optionally, the mandrel includes a second mandrel and a third mandrel; The third rotor is sleeved on the second core shaft and fixedly connected to the second core shaft, and the second core shaft extends out of the housing from one end of the third rotor; The fourth rotor is sleeved on the third core shaft and fixedly connected to the third core shaft. The third core shaft extends out of the housing from one end of the fourth rotor.

[0009] Optionally, The first mounting portion includes a first mounting area and a second mounting area that are correspondingly arranged, and the second mounting portion includes a third mounting area and a fourth mounting area that are correspondingly arranged; A first winding is wound on the first installation area, and a second winding is wound on the second installation area; A third winding is wound on the third installation area, and a fourth winding is wound on the fourth installation area.

[0010] Optionally, a first switch is provided between the first winding and the third winding, and a second switch is provided between the second winding and the fourth winding; When the first switch is turned on to the first side, the first winding and the third winding are energized in series, so that the first winding drives the first rotor to rotate, and the third winding drives the third rotor to rotate; when the first switch is turned on to the second side, the first winding is energized, and the three windings are deenergized, so that the first winding drives the first rotor to rotate; When the second switch is turned on to the first side, the second winding and the fourth winding are energized in series, so that the second winding drives the second rotor to rotate, and the fourth winding drives the fourth rotor to rotate. When the second switch is turned on to the second side, the second winding is energized and the fourth winding is de-energized, so that the second winding drives the second rotor to rotate.

[0011] Optionally, it also includes: a control component; The control assembly comprises: a first control unit and a second control unit; The first control unit is connected to the first winding and the first switch for communication, and the second control unit is connected to the second winding and the second switch for communication; The first control unit is used to control the on / off of the first winding and the switching of the first switch, and the second control unit is used to control the on / off of the second winding and the switching of the second switch.

[0012] Optionally, the first mounting portion and the second mounting portion are nested, wherein two ends of the second mounting portion are respectively sleeved with one of the first mounting portions; The first mounting portion is a wound core, and the second mounting portion is a laminated core.

[0013] In a second aspect of the present application, a motor system is provided, comprising the axial flux motor as described in the first aspect of the present application and a plurality of wheel-end reducers; The first rotating shaft of the axial flux motor is connected to the first wheel of the vehicle through a first wheel end reducer; The second rotating shaft of the axial flux motor is connected to the second wheel of the vehicle through a second wheel end reducer; The core shaft of the axial flux motor is connected to the third wheel and the fourth wheel of the vehicle respectively through a third wheel end reducer.

[0014] Optionally, the third wheel end reducer comprises: a third left wheel end reducer and a third right wheel end reducer; The third left wheel end reducer is connected to the third wheel, and the third right wheel end reducer is connected to the fourth wheel.

[0015] In a third aspect of the present application, a vehicle is provided, wherein the vehicle comprises the axial flux motor as described in the first aspect of the present application, and / or the vehicle comprises the motor system as described in the second aspect of the present application.

[0016] Beneficial effects of this application: The present application provides an axial flux motor, comprising: a shell and a stator assembly, a first rotor assembly, a second rotor assembly, and a rotating shaft assembly arranged inside the shell; the stator assembly is fixedly connected to the shell, the stator assembly comprises a first mounting portion and a second mounting portion, and windings are arranged on the first mounting portion and the second mounting portion; the first rotor assembly comprises a first rotor and a second rotor arranged opposite to each other, and the second rotor assembly comprises a third rotor and a fourth rotor arranged opposite to each other, the positions of the first rotor and the second rotor correspond to the first mounting portion, and the positions of the third rotor and the fourth rotor correspond to the second mounting portion; the rotating shaft assembly comprises: a first rotating shaft, a second rotating shaft, and at least one core shaft; the first rotor is connected to the first rotating shaft, the second rotor is connected to the second rotating shaft, the third rotor and the fourth rotor are respectively connected to at least one core shaft, and the first rotating shaft, the second rotating shaft, and at least one core shaft respectively correspond to a torque output end.

[0017] The axial flux motor provided by the present application, through the cooperation of the first rotor assembly and the second rotor assembly, enables two independent power units to drive different wheels respectively, which can improve the flexibility of power distribution and meet the driving requirements under different working conditions. In addition, the division of labor and cooperation between the first rotating shaft, the second rotating shaft and the core shaft enables the power to be more evenly distributed among multiple wheels, which helps to reduce the load pressure borne by a single motor, and realize more precise power control, thereby improving the driving performance and safety of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 of the present application 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 creative work.

[0019] Figure 1 is a structural schematic diagram of an axial flux motor provided in an embodiment of the present application; Figure 2 It is a structural schematic diagram of a dual-core axial flux motor provided in an embodiment of the present application; Figure 3 is a structural schematic diagram of a stator assembly provided in an embodiment of the present application; Figure 4 It is a winding circuit control schematic diagram provided in an embodiment of the present application; Figure 5 It is a driving mode block diagram provided by an embodiment of the present application; Figure 6is a schematic diagram of a single-axis motor system provided in an embodiment of the present application; Figure 7 It is a schematic diagram of a dual-axis motor system provided in an embodiment of the present application.

[0020] Explanation of the reference numerals: 10, housing; 20, stator assembly; 30, first rotor assembly; 40, second rotor assembly; 50, shaft assembly; 60, winding; 201, first mounting portion; 202, second mounting portion; 301, first rotor; 302, second rotor; 401, third rotor; 402, fourth rotor; 501, first shaft; 502, second shaft; 503, core shaft; 601, first winding; 602, second winding; 603, third winding; 604, fourth winding; 2011, first mounting area; 2012, second mounting area; 2021, third Installation area; 2022, fourth installation area; 605, first switch; 606, second switch; 70, control component; 701, first control unit; 702, second control unit; 801, first wheel-end reducer; 802, second wheel-end reducer; 803, third wheel-end reducer; 804, transmission shaft; 805, clutch; 806, fourth wheel-end reducer; 807, differential; 901, first wheel; 902, second wheel; 903, third wheel; 904, fourth wheel; 8031, third left wheel-end reducer; 8032, third right wheel-end reducer. DETAILED DESCRIPTION

[0021] The exemplary embodiments of the present application will be described in more detail below in conjunction with the accompanying drawings in the embodiments of the present application. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to enable the scope of the present application to be fully communicated to those skilled in the art.

[0022] Based on the above problems, in a first aspect of the embodiments of the present application, an axial flux motor is provided, comprising: a housing 10 and a stator assembly 20, a first rotor assembly 30, a second rotor assembly 40, and a rotating shaft assembly 50 arranged inside the housing 10; The stator assembly 20 is fixedly connected to the housing 10, and the stator assembly 20 includes a first mounting portion 201 and a second mounting portion 202, and the first mounting portion 201 and the second mounting portion 202 are both provided with a winding 60; The first rotor assembly 30 includes a first rotor 301 and a second rotor 302 that are oppositely disposed, and the second rotor assembly 40 includes a third rotor 401 and a fourth rotor 402 that are oppositely disposed, wherein the positions of the first rotor 301 and the second rotor 302 correspond to the first mounting portion 201, and the positions of the third rotor 401 and the fourth rotor 402 correspond to the second mounting portion 202; The rotating shaft assembly 50 includes: a first rotating shaft 501, a second rotating shaft 502 and at least one core shaft 503; The first rotor 301 is connected to the first rotating shaft 501, the second rotor 302 is connected to the second rotating shaft 502, the third rotor 401 and the fourth rotor 402 are respectively connected to at least one core shaft 503, and the first rotating shaft 501, the second rotating shaft 502 and at least one core shaft 503 respectively correspond to a torque output end.

[0023] like Figure 1 As shown, the axial flux motor provided by the present application has a structure including a housing 10 , a stator assembly 20 , a first rotor assembly 30 , a second rotor assembly 40 , and a rotating shaft assembly 50 .

[0024] The stator assembly 20 is fixed inside the housing 10 and consists of a first mounting portion 201 and a second mounting portion 202 , and windings 60 are mounted on both the first mounting portion 201 and the second mounting portion 202 for generating a magnetic field.

[0025] The first rotor assembly 30 is composed of a first rotor 301 and a second rotor 302 which are arranged opposite to each other, and the position of the first rotor assembly 30 corresponds to the first mounting portion 201 ; the second rotor assembly 40 is composed of a third rotor 401 and a fourth rotor 402 which are arranged opposite to each other, and the position of the second rotor assembly 40 corresponds to the second mounting portion 202 .

[0026] The rotating shaft assembly 50 includes a first rotating shaft 501, a second rotating shaft 502 and at least one core shaft 503 for transmitting power.

[0027] In terms of power connection, the first rotor 301 of the axial flux motor is connected to the first rotating shaft 501, and the second rotor 302 is connected to the second rotating shaft 502, respectively driving different torque output ends, wherein, in some embodiments, the torque output end can be the wheel of the vehicle, and the third rotor 401 and the fourth rotor 402 are respectively connected to at least one core shaft 503, further optimizing the power transmission path so that different torque output ends can work together to achieve efficient drive.

[0028] The axial flux motor provided by the present application, through the cooperation of the first rotor assembly and the second rotor assembly, enables two independent power units to drive different torque output ends respectively. Compared with the traditional single-rotor motor, the present application can improve the flexibility of power distribution and meet the driving requirements under different working conditions. In addition, the division of labor and cooperation between the first rotating shaft, the second rotating shaft and the core shaft enables power to be more evenly distributed among multiple torque output ends, which helps to reduce the load pressure on a single motor, and achieve more precise power control, thereby improving the driving performance and safety of the motor.

[0029] In one embodiment, the mandrel 503 includes a first mandrel; The third rotor 401 and the fourth rotor 402 are both sleeved on the first core shaft and fixedly connected to the first core shaft. The first core shaft passes through the second mounting portion 202 and extends out of the housing 10 .

[0030] Continue to refer to Figure 1 As shown, the mandrel 503 includes a first mandrel, wherein the third rotor 401 and the fourth rotor 402 are both sleeved on the first mandrel and fixedly connected to the first mandrel so that they can rotate synchronously, thereby ensuring the stability of power transmission. The first mandrel passes through the second mounting portion 202 and further extends outside the housing 10, so that the internal power of the motor can be smoothly transmitted to the external drive mechanism, such as the wheels or differential of the vehicle, to achieve efficient power output.

[0031] Through the above structural design, the two rotor assemblies of this embodiment can cooperate with each other to achieve more reasonable power distribution, so that the motor can maintain efficient operation under different load conditions. In addition, the design also simplifies the structure of the motor, reduces additional couplings or complex power transmission mechanisms, thereby reducing manufacturing costs and improving system reliability and energy efficiency.

[0032] In one embodiment, the mandrel 503 includes a second mandrel and a third mandrel; The third rotor 401 is sleeved on the second core shaft and fixedly connected to the second core shaft, and the second core shaft extends out of the housing 10 from one end of the third rotor 401; The fourth rotor 402 is sleeved on the third core shaft and fixedly connected to the third core shaft. The third core shaft extends out of the housing 10 from one end of the fourth rotor 402 .

[0033] Reference Figure 2The schematic diagram of the structure of the dual-core axial flux motor shown in the figure, wherein the core shaft 503 is further subdivided into a second core shaft and a third core shaft, which are respectively used to support and connect different rotor components to optimize the power transmission structure. The third rotor 401 is sleeved on the second core shaft and fixedly connected thereto so that it can rotate stably, and at the same time, the second core shaft extends out of the housing 10 from one end of the third rotor 401, thereby realizing efficient transmission of power inside the motor. Similarly, the fourth rotor 402 is sleeved on the third core shaft and fixedly connected thereto so that it rotates synchronously, and the third core shaft also extends out of the housing 10 from one end of the fourth rotor 402 so as to transmit power to an external drive mechanism, such as a wheel or differential of a vehicle.

[0034] This embodiment adopts two independent core shaft structures to enable the two rotor assemblies to operate independently, but can cooperate with each other, thereby improving the power output efficiency and adaptability of the motor. In addition, the present application reduces energy loss during mechanical coupling, improves system reliability, and simplifies the overall structure.

[0035] In one embodiment, the winding 60 includes: a first winding 601, a second winding 602, a third winding 603 and a fourth winding 604; The first mounting portion 201 includes a first mounting area 2011 and a second mounting area 2012 that are correspondingly arranged, and the second mounting portion 202 includes a third mounting area 2021 and a fourth mounting area 2022 that are correspondingly arranged; The first winding 601 is wound on the first installation area 2011, and the second winding 602 is wound on the second installation area 2012; The third winding 603 is wound on the third installation area 2021 , and the fourth winding 604 is wound on the fourth installation area 2022 .

[0036] In this embodiment, continue to refer to Figure 1 As shown, the winding 60 is composed of a first winding 601, a second winding 602, a third winding 603 and a fourth winding 604, and each winding is respectively arranged in a different installation area of ​​the motor to achieve precise electromagnetic control.

[0037] Specifically, refer to Figure 3 The structural schematic diagram of the stator assembly is shown, wherein the first mounting portion 201 consists of a first mounting area 2011 and a second mounting area 2012 .

[0038] In some embodiments, a first winding 601 is wound on the first installation area 2011 , and a second winding 602 is wound on the second installation area 2012 . The two windings interact with the first rotor assembly 30 (including the first rotor 301 and the second rotor 302 ) to generate a driving magnetic field.

[0039] Similarly, the second mounting portion 202 is composed of a third mounting area 2021 and a fourth mounting area 2022, wherein the third mounting area 2021 is wound with a third winding 603, and the fourth mounting area 2022 is wound with a fourth winding 604, and these two windings interact with the second rotor assembly 40 (including the third rotor 401 and the fourth rotor 402) to realize electromagnetic driving of another set of rotors.

[0040] In one embodiment, the first mounting portion 201 and the second mounting portion 202 are nested, wherein two ends of the second mounting portion 202 are respectively sleeved with one of the first mounting portions 201; The first mounting portion 201 is a wound iron core, and the second mounting portion 202 is a laminated iron core.

[0041] In this embodiment, continue to refer to Figure 3 The first mounting part 201 and the second mounting part 202 adopt a nested structure, wherein the two ends of the second mounting part 202 are respectively sleeved with a first mounting part 201, forming a compact and efficient stator structure. This design optimizes the magnetic flux path and improves the power density and energy efficiency of the motor.

[0042] Specifically, the first mounting portion 201 adopts a wound core structure, while the second mounting portion 202 adopts a laminated core structure. The wound core is formed by continuous winding, without the need for traditional assembly processes, and can reduce magnetic circuit joints and improve the continuity of magnetic flux, thereby reducing iron loss and improving motor efficiency. On the other hand, the laminated core is formed by stacking multiple layers of silicon steel sheets, which can effectively reduce eddy current losses and further optimize motor performance.

[0043] This nested design not only improves the compactness of the motor structure, but also optimizes the magnetic circuit design, making the magnetic flux distribution more uniform, thereby improving the overall performance of the motor. At the same time, combined with different types of core structures, it can improve the mechanical strength of the motor while ensuring efficient energy conversion, enhance its durability, and make it more suitable for high-performance electric drive systems.

[0044] In some embodiments, the second mounting portion 202 is provided with axially arranged through holes, and the axially arranged through holes are used for winding the third winding and the fourth winding.

[0045] This partitioned winding design enables two independent rotor components to be controlled separately, achieving more precise electromagnetic excitation, while improving magnetic flux density and motor efficiency. In addition, the distributed winding method can effectively reduce eddy current loss and iron loss, improve the overall energy efficiency of the motor, and make it more suitable for high-performance power systems, such as new energy vehicle drive, electric aviation propulsion and other fields.

[0046] In some embodiments, a first switch 605 is provided between the first winding 601 and the third winding 603, and a second switch 606 is provided between the second winding 602 and the fourth winding 604; When the first switch 605 is turned on to the first side, the first winding 601 and the third winding 603 are energized in series, so that the first winding 601 drives the first rotor 301 to rotate, and the third winding 603 drives the third rotor 401 to rotate; when the first switch 605 is turned on to the second side, the first winding 601 is energized, and the third winding 603 is de-energized, so that the first winding 601 drives the first rotor 301 to rotate; When the second switch 606 is turned on to the first side, the second winding 602 and the fourth winding 604 are energized in series, so that the second winding 602 drives the second rotor 302 to rotate, and the fourth winding 604 drives the fourth rotor 402 to rotate. When the second switch 606 is turned on to the second side, the second winding 602 is energized and the fourth winding 604 is de-energized, so that the second winding 602 drives the second rotor 302 to rotate.

[0047] In this embodiment, the circuit control method of the winding is further optimized, so that the motor can flexibly adjust the winding power supply method under different operating modes to adapt to different working conditions and improve the efficiency and control accuracy of the motor.

[0048] A first switch 605 is provided between the first winding 601 and the third winding 603, and a second switch 606 is provided between the second winding 602 and the fourth winding 604. By controlling the conduction state of the two switches, the energization mode of the windings can be changed, thereby affecting the driving mode of the rotor.

[0049] Specifically, refer to Figure 4 The winding circuit control schematic diagram shown in FIG. Figure 4 The left figure is a schematic diagram of the first winding and the third winding circuit control. Figure 4 The figure on the right is a schematic diagram of the circuit control of the second winding and the fourth winding. When the first switch 605 is turned on to the first side, the first winding 601 and the third winding 603 are energized in series. At this time, the magnetic field generated by the first winding 601 drives the first rotor 301 to rotate, and the magnetic field generated by the third winding 603 drives the third rotor 401 to rotate. In this mode, the two windings work together to enable the two rotors to operate synchronously, thereby improving transmission efficiency and power output.

[0050] When the first switch 605 is turned on to the second side, only the first winding 601 is energized, and the third winding 603 is de-energized. At this time, only the first rotor 301 is driven to rotate, and the third rotor 401 is no longer driven to rotate. In this mode, the driving force can be flexibly adjusted under different load conditions, reducing unnecessary energy consumption and improving the adaptability of the overall system.

[0051] Similarly, the second switch 606 is responsible for controlling the energization mode of the second winding 602 and the fourth winding 604: When the second switch 606 is turned on to the first side, the second winding 602 and the fourth winding 604 are energized in series, and the magnetic field generated by the second winding 602 drives the second rotor 302 to rotate, while the magnetic field generated by the fourth winding 604 drives the fourth rotor 402 to rotate. In this mode, the two rotors run synchronously, improving power output and system stability.

[0052] When the second switch 606 is turned on to the second side, only the second winding 602 is energized and the fourth winding 604 is de-energized. At this time, only the second rotor 302 is driven and the fourth rotor 402 stops running, so that the motor can independently control the operation of a certain group of rotors under specific working conditions, thereby improving the precision of energy consumption control.

[0053] This design of windings and switches can flexibly adjust the motor's driving mode according to different load requirements, allowing the motor to switch freely between dual-rotor collaborative mode and single-rotor independent drive mode, thereby optimizing power output and improving energy utilization under different working conditions, and enhancing the system's adaptability and intelligent control capabilities.

[0054] The present application proposes an axial flux motor with a compact structure, high power density and flexible power distribution capability, which is suitable for new energy vehicles and high-performance electric drive systems. The motor mainly includes a housing 10, a stator assembly 20, a first rotor assembly 30, a second rotor assembly 40, a shaft assembly 50 and a winding 60. Among them, the housing 10 is a supporting structure that fixes the internal components and provides necessary protection and heat dissipation functions; the stator assembly 20 is fixed inside the housing 10, and is composed of a first mounting portion 201 and a second mounting portion 202, and each mounting portion is wound with a winding 60 to generate a magnetic field and drive the rotor to rotate. The first mounting portion 201 includes a first mounting area 2011 and a second mounting area 2012, which are respectively wound with a first winding 601 and a second winding 602; the second mounting portion 202 includes a third mounting area 2021 and a fourth mounting area 2022, which are respectively wound with a third winding 603 and a fourth winding 604.

[0055] The motor adopts a dual-rotor structure, including a first rotor assembly 30 and a second rotor assembly 40, each rotor assembly is composed of two rotors arranged opposite to each other to form a closed magnetic flux path to improve the motor performance. The first rotor assembly 30 is composed of a first rotor 301 and a second rotor 302, corresponding to the first mounting portion 201; the second rotor assembly 40 is composed of a third rotor 401 and a fourth rotor 402, corresponding to the second mounting portion 202. The power output is realized through a shaft assembly 50, which includes a first shaft 501, a second shaft 502 and at least one core shaft 503. The first shaft 501 is connected to the first rotor 301, and the second shaft 502 is connected to the second rotor 302, which are respectively used to drive different wheels of the vehicle. The core shaft 503 connects the third and fourth rotors, and specifically can adopt a single-core shaft or a double-core shaft design: in the single-core shaft solution, the third rotor 401 and the fourth rotor 402 are fixed on the same core shaft, and extend out of the shell 10 through the second mounting portion 202 to be connected to the wheels of the vehicle; in the double-core shaft solution, the core shaft 503 includes a second core shaft and a third core shaft, which are respectively connected to the third rotor 401 and the fourth rotor 402 to optimize power distribution.

[0056] The motor control of the present application adopts a variable winding strategy to adapt to different working conditions. The first switch 605 and the second switch 606 control the power-on mode of the winding 60 to achieve two driving modes: In the series drive mode, the first switch 605 is turned on to the first side, so that the first winding 601 and the third winding 603 are energized in series, the first winding 601 drives the first rotor 301 to rotate, and the third winding 603 drives the third rotor 401 to rotate; similarly, when the second switch 606 is turned on to the first side, the second winding 602 and the fourth winding 604 are energized in series, so that the second rotor 302 and the fourth rotor 402 rotate synchronously. This mode is suitable for high torque demand conditions and improves the motor output capacity and efficiency. In the independent drive mode, the first switch 605 is turned on to the second side, only the first winding 601 is energized, the third winding 603 is de-energized, and only the first rotor 301 is driven; the second switch 606 is turned on to the second side, only the second winding 602 is energized, the fourth winding 604 is de-energized, and only the second rotor 302 is driven. This mode is suitable for energy-saving mode or single-wheel independent drive to improve energy consumption control accuracy.

[0057] The axial flux motor of the present application. The power output efficiency is improved by the collaborative work of the dual rotor components, and the variable control strategy of the winding can adjust the power distribution according to the vehicle needs to achieve the optimal driving mode. Secondly, by flexibly switching the winding power-on mode through the first switch 605 and the second switch 606, it can meet the high-torque working conditions, while optimizing energy consumption, shutting down some windings under low-load conditions, and improving overall efficiency. In addition, the multi-axis connection structure enables different wheels to be driven independently or collaboratively, improving vehicle stability and handling flexibility, and is suitable for application scenarios such as four-wheel drive and differential drive.

[0058] In summary, the axial flux motor solution successfully achieves efficient energy conversion and flexible driving mode through dual rotor structure, variable winding control and multi-axis connection. The first rotor assembly and the second rotor assembly cooperate with each other and can be driven in series or separately to improve the power output capacity; the winding control strategy can adapt to different working conditions, which can not only meet high torque requirements but also optimize energy consumption management; the multi-axis connection structure enables different wheels to be driven independently or collaboratively, improving system stability and flexibility.

[0059] In one embodiment, it further includes: a control component 70; The control component 70 includes: a first control unit 701 and a second control unit 702; The first control unit 701 is respectively connected to the first winding 601 and the first switch 605 for communication, and the second control unit 702 is respectively connected to the second winding 602 and the second switch 606 for communication; The first control unit 701 is used to control the on / off of the first winding 601 and the switching of the first switch 605 , and the second control unit 702 is used to control the on / off of the second winding 602 and the switching of the second switch 606 .

[0060] Continue to refer to Figure 1 or Figure 2 The axial flux motor provided in the present application further includes a control component 70 , wherein the control component 70 is composed of two independent control units: a first control unit 701 and a second control unit 702 .

[0061] Among them, the first control unit 701 is respectively connected to the first winding 601 and the first switch 605 in communication, and can control the on and off of the first winding 601, and adjust the conduction state of the first switch 605, so that the first winding 601 and the third winding 603 are connected in series or work independently. Similarly, the second control unit 702 is respectively connected to the second winding 602 and the second switch 606 in communication, responsible for controlling the on and off of the second winding 602, and adjusting the state of the second switch 606 to achieve the series connection or independent operation of the second winding 602 and the fourth winding 604. Through this control method, the power-on mode of the winding can be flexibly adjusted to meet the requirements of different working conditions, and improve the working efficiency and energy consumption management capabilities of the motor.

[0062] For example: Figure 5The driving mode block diagram shown in the figure shows that in the series driving mode (high torque mode), the left side indicates that: the first switch 605 switches to the series mode, so that the first winding 601 and the third winding 603 are energized in series; the second switch 606 switches to the series mode, so that the second winding 602 and the fourth winding 604 are energized in series. At the same time, the first control unit 701 and the second control unit 702 respectively control the on and off of the windings to ensure that the current flows through all windings, thereby improving the overall power output. The advantage of this mode is that by increasing the induced current of the motor winding, the driving torque can be significantly improved, which is suitable for scenarios with high torque requirements such as starting on a slope and towing a load. Figure 5 In the figure, the dotted line indicates no conduction, and the solid line indicates conduction.

[0063] The right side shows the independent driving mode (energy-saving mode): the first switch 605 is switched to the independent mode, only the first winding 601 is powered on, and the third winding 603 is powered off; the second switch 606 is switched to the independent mode, only the second winding 602 is powered on, and the fourth winding 604 is powered off. This can avoid unnecessary winding power-on, thereby reducing power loss. The advantage of this mode is that it improves the cruising range, is suitable for energy-saving driving scenarios, effectively reduces the energy consumption of the motor, and improves the economy of the overall electric drive system.

[0064] Through the flexible switching of these two modes, the axial drive motor provided in this application can achieve a balance between power output and energy consumption optimization, which can not only meet high torque requirements, but also effectively reduce energy consumption and improve the overall performance and endurance of the vehicle.

[0065] In some embodiments, the first rotor 301 , the second rotor 302 , the third rotor 401 , and the fourth rotor 402 are all provided with rotor disks and magnetic steels, wherein the magnetic steels are arranged along the circumference of the rotor disks.

[0066] In some embodiments, bearings are provided between the first rotating shaft 501 and the core shaft 503 or between the second rotating shaft 502 and the core shaft 503 to ensure that the first rotating shaft 501 and the core shaft 503 or the second rotating shaft 502 and the core shaft 503 are concentric, and the bearings also play a supporting role.

[0067] The axial flux motor provided by the present application, through the cooperation of the first rotor assembly and the second rotor assembly, enables two independent power units to drive different wheels respectively. Compared with the traditional single-rotor motor, the present application can improve the flexibility of power distribution and meet the driving requirements under different working conditions. In addition, the division of labor and cooperation between the first rotating shaft, the second rotating shaft and the core shaft enables power to be more evenly distributed among multiple wheels, which helps to reduce the load pressure on a single motor, and achieve more precise power control, improving the driving performance and safety of the system.

[0068] Based on the same inventive concept, in a second aspect of the present application, a motor system is provided, such as Figure 6 The schematic diagram of the single-core shaft motor system shown includes the axial flux motor described in the first aspect of the present application, and a plurality of wheel-end reducers; The first rotating shaft of the axial flux motor is connected to the first wheel 901 of the vehicle through the first wheel end reducer 801; The second rotating shaft of the axial flux motor is connected to the second wheel 902 of the vehicle through a second wheel end reducer 802; The core shaft of the axial flux motor is connected to the third wheel 903 and the fourth wheel 904 of the vehicle respectively through the third wheel end reducer 803.

[0069] In this embodiment, Figure 6 The single-shaft motor system shown includes an axial flux motor and multiple wheel-end reducers to achieve efficient power transmission and distribution.

[0070] In this system, the first rotating shaft of the axial flux motor is connected to the first wheel 901 of the vehicle through the first wheel end reducer 801, and the second rotating shaft is connected to the second wheel 902 of the vehicle through the second wheel end reducer 802. In addition, the core shaft of the motor simultaneously drives the third wheel 903 and the fourth wheel 904 of the vehicle through the third wheel end reducer 803. This design enables the motor to provide power to multiple wheels at the same time, realizing a more efficient four-wheel drive or dual-axle drive solution.

[0071] Through the configuration of the wheel-end reducer, the system can reasonably adjust the wheel-end output torque, making full use of the high-speed characteristics of the motor, while ensuring that the vehicle can obtain appropriate driving force under different working conditions. In addition, this design allows the motor power to be distributed to different wheels, improving the vehicle's driving flexibility and handling stability.

[0072] For example, in working conditions that do not require strong power, such as flat roads, the axial flux motor switches to an independent drive mode, that is, energy saving. Since only the first and second shafts of the axial flux motor work to output driving force, the core shaft does not work and does not participate in power output, so only the driving wheels of the vehicle, namely the first wheel 901 and the second wheel 902, work. In working conditions that require strong power, such as climbing, the axial flux motor will switch to a series drive mode, that is, a high torque mode. Since the first and second shafts of the axial flux motor and the core shaft all work to output driving force, the first wheel 901, the second wheel 902, the third wheel 903, and the fourth wheel 904 of the vehicle all output power, thereby providing greater driving force for the vehicle.

[0073] In some embodiments, a transmission shaft 804 is provided at the output end of the third wheel-end reducer 803, a clutch 805 is provided on the transmission shaft 804, a fourth wheel-end reducer 806 and a differential 807 are also provided at the output end of the transmission shaft 804, and the transmission shaft 804 is connected to the third wheel 903 and the fourth wheel 904 through the fourth wheel-end reducer 806 and the differential 807.

[0074] In one embodiment, the third wheel end reducer 803 includes: a third left wheel end reducer 8031 ​​and a third right wheel end reducer 8032; The third left wheel end reducer 8031 ​​is connected to the third wheel 903 , and the third right wheel end reducer 8032 is connected to the fourth wheel 904 .

[0075] In this embodiment, refer to Figure 7 A schematic diagram of a dual-shaft motor system is shown, in which the third wheel-end reducer 803 adopts a left-right distributed structure, including a third left wheel-end reducer 8031 ​​and a third right wheel-end reducer 8032, which are respectively connected to the third wheel 903 and the fourth wheel 904 to achieve distributed transmission of power.

[0076] like Figure 7 As shown, the second core shaft of the axial flux motor is connected to the third left wheel-end reducer 8031, the third core shaft is connected to the third right wheel-end reducer 8032, the first rotating shaft is connected to the first wheel-end reducer 801, and the second rotating shaft is connected to the second wheel-end reducer 802, wherein the third left wheel-end reducer 8031 ​​is used to transmit the power output by the second core shaft to the third wheel 903; the third right wheel-end reducer 8032 is used to transmit the power output by the third core shaft to the fourth wheel 904; the first wheel-end reducer 801 is used to transmit the power output by the first rotating shaft to the first wheel 901; the second wheel-end reducer 802 is used to transmit the power output by the second rotating shaft to the second wheel 902, thereby realizing independent torque output control of the four wheels, which not only improves the adaptability of the vehicle, but also optimizes energy consumption, so that the electric vehicle can achieve optimal performance under different working conditions.

[0077] In some embodiments, a transmission shaft 804, a clutch 805 and a fourth wheel-end reducer 806 are provided between the third left wheel-end reducer 8031 ​​and the third wheel 903 and between the third right wheel-end reducer 8032 and the fourth wheel 904 to achieve power transmission.

[0078] In a third aspect of the present application, a vehicle is provided, wherein the vehicle comprises the axial flux motor as described in the first aspect of the present application, and / or the vehicle comprises the motor system as described in the second aspect of the present application.

[0079] Each embodiment in this specification focuses on the differences from other embodiments. The same and similar parts between the embodiments may be referred to each other.

[0080] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0081] It should also be noted that, in this article, the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the term "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device.

[0082] The above is a detailed introduction to an axial flux motor, system and vehicle provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application, and the content of this specification should not be understood as a limitation on the present application. At the same time, for those of ordinary skill in the art, according to the present application, there will be different forms of changes in the specific implementation methods and application scopes. It is not necessary and impossible to list all the implementation methods here, and the obvious changes or modifications derived therefrom are still within the scope of protection of the present application.

Claims

1. An axial flux motor, characterized in that: include: A housing and a stator assembly, a first rotor assembly, a second rotor assembly, and a rotating shaft assembly arranged inside the housing; The stator assembly is fixedly connected to the housing, and the stator assembly includes a first mounting portion and a second mounting portion, and windings are disposed on the first mounting portion and the second mounting portion; The first rotor assembly includes a first rotor and a second rotor that are arranged opposite to each other, and the second rotor assembly includes a third rotor and a fourth rotor that are arranged opposite to each other, wherein the positions of the first rotor and the second rotor correspond to the first mounting portion, and the positions of the third rotor and the fourth rotor correspond to the second mounting portion; The rotating shaft assembly comprises: a first rotating shaft, a second rotating shaft and at least one core shaft; The first rotor is connected to the first rotating shaft, the second rotor is connected to the second rotating shaft, the third rotor and the fourth rotor are respectively connected to at least one of the core shafts, and the first rotating shaft, the second rotating shaft and at least one of the core shafts respectively correspond to a torque output end.

2. The axial flux motor according to claim 1, characterized in that: The mandrel comprises a first mandrel; The third rotor and the fourth rotor are both sleeved on the first core shaft and fixedly connected to the first core shaft. The first core shaft passes through the second mounting portion and extends out of the housing.

3. The axial flux motor according to claim 1, characterized in that: The mandrel comprises a second mandrel and a third mandrel; The third rotor is sleeved on the second core shaft and fixedly connected to the second core shaft, and the second core shaft extends out of the housing from one end of the third rotor; The fourth rotor is sleeved on the third core shaft and fixedly connected to the third core shaft. The third core shaft extends out of the housing from one end of the fourth rotor.

4. The axial flux motor according to claim 1, characterized in that: The first mounting portion includes a first mounting area and a second mounting area that are correspondingly arranged, and the second mounting portion includes a third mounting area and a fourth mounting area that are correspondingly arranged; A first winding is wound on the first installation area, and a second winding is wound on the second installation area; A third winding is wound on the third installation area, and a fourth winding is wound on the fourth installation area.

5. The axial flux motor according to claim 4, characterized in that: A first switch is provided between the first winding and the third winding, and a second switch is provided between the second winding and the fourth winding; When the first switch is turned on to the first side, the first winding and the third winding are energized in series, so that the first winding drives the first rotor to rotate, and the third winding drives the third rotor to rotate; when the first switch is turned on to the second side, the first winding is energized and the third winding is de-energized, so that the first winding drives the first rotor to rotate; When the second switch is turned on to the first side, the second winding and the fourth winding are energized in series, so that the second winding drives the second rotor to rotate, and the fourth winding drives the fourth rotor to rotate. When the second switch is turned on to the second side, the second winding is energized and the fourth winding is de-energized, so that the second winding drives the second rotor to rotate.

6. The axial flux motor according to claim 5, characterized in that: Also includes: Control components; The control assembly comprises: a first control unit and a second control unit; The first control unit is connected to the first winding and the first switch for communication, and the second control unit is connected to the second winding and the second switch for communication; The first control unit is used to control the on / off of the first winding and the switching of the first switch, and the second control unit is used to control the on / off of the second winding and the switching of the second switch.

7. The axial flux motor according to claim 1, characterized in that: The first mounting portion and the second mounting portion are nested, wherein two ends of the second mounting portion are respectively sleeved with one of the first mounting portions; The first mounting portion is a wound core, and the second mounting portion is a laminated core.

8. A motor system, characterized in that: It comprises an axial flux motor as claimed in any one of claims 1 to 7 and a plurality of wheel-end reducers; The first rotating shaft of the axial flux motor is connected to the first wheel of the vehicle through a first wheel end reducer; The second rotating shaft of the axial flux motor is connected to the second wheel of the vehicle through a second wheel end reducer; The core shaft of the axial flux motor is connected to the third wheel and the fourth wheel of the vehicle respectively through a third wheel end reducer.

9. The motor system according to claim 8, characterized in that: The third wheel end reducer comprises: a third left wheel end reducer and a third right wheel end reducer; The third left wheel end reducer is connected to the third wheel, and the third right wheel end reducer is connected to the fourth wheel.

10. A vehicle, characterized in that: The vehicle comprises an axial flux machine according to any one of claims 1 to 7 , and / or the vehicle comprises an electric machine system according to claim 8 or 9 .

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