Assembly structure of methanol engine and axial flux permanent magnet synchronous motor
By setting a specific docking part on the flywheel housing and transition flange of the methanol engine, the problem of compatibility with methanol engines of different specifications is solved, and a fixed connection between the same specification axial flux permanent magnet synchronous motor and methanol engines of different specifications is realized, thereby reducing production and R&D costs.
Patent Information
- Application Number
- CN202522377405.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-10
AI Technical Summary
In the existing technology, the assembly of methanol engines and axial flux permanent magnet synchronous motors requires the production and development of axial flux permanent magnet synchronous motor housings of different specifications for methanol engines of different specifications, which leads to increased production and development costs.
Multiple methanol engine flywheel housings and transition flanges of different specifications are used. By setting a first fixing part on the flywheel housing and setting a first and second mating parts at both ends of the transition flange, the methanol engine flywheel housings of different specifications can be fixedly connected to the transition flange of the same specification. A second fixing part is set on the housing of the axial flux permanent magnet synchronous motor so that the second mating parts of the transition flanges of different specifications can be fixedly connected to it.
It enables the assembly and fixing of axial flux permanent magnet synchronous motor housings of the same specification with methanol engine flywheel housings of different specifications, saving the production and R&D costs of axial flux permanent magnet synchronous motors.
Smart Images
Figure CN224935507U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine technology, and in particular to the assembly structure of a methanol engine and an axial flux permanent magnet synchronous motor. Background Technology
[0002] With the continuous development of automotive technology, range extender technology has flourished and gained widespread market application. Taking a methanol engine and an axial flux permanent magnet synchronous motor as an example, the outer shaft of the methanol engine is connected to the rotor shaft of the axial flux permanent magnet synchronous motor. When the methanol engine needs to be started, the rotor shaft of the axial flux permanent magnet synchronous motor drives the outer shaft of the methanol engine to rotate; when the methanol engine is operating normally, the outer shaft of the methanol engine drives the rotor shaft of the axial flux permanent magnet synchronous motor to rotate, thereby achieving range-extended power generation.
[0003] In related technologies, the assembly of a methanol engine and an axial flux permanent magnet synchronous motor (ACM) requires fixing the flywheel housing of the methanol engine to the housing of the ACM, based on the fixed connection between the extended shaft of the methanol engine and the rotor shaft of the ACM. This ensures the structural strength between the methanol engine and the ACM. However, methanol engines come in different specifications, each with its own flywheel housing. To achieve compatibility with different methanol engine specifications, ACM housings of different specifications need to be manufactured and developed, significantly increasing the production and development costs of the ACM.
[0004] Therefore, there is an urgent need to invent an assembly structure for a methanol engine and an axial flux permanent magnet synchronous motor to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide an assembly structure for a methanol engine and an axial flux permanent magnet synchronous motor, so as to realize the assembly and fixation of an axial flux permanent magnet synchronous motor housing of the same specification with a methanol engine flywheel housing of different specifications, thereby saving the production and R&D costs of the axial flux permanent magnet synchronous motor.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor includes:
[0008] Multiple methanol engine flywheel housings of different specifications, each of which has a first fixing part, and the specifications of the first fixing part of the methanol engine flywheel housings of different specifications are different;
[0009] A housing for an axial flux permanent magnet synchronous motor, the housing having a second fixing part;
[0010] Multiple transition flanges of different specifications are provided. Each transition flange has a first mating portion and a second mating portion. The first mating portion and the second mating portion are located at opposite ends of the axial direction of the transition flange. The specifications of the first mating portions of the transition flanges of different specifications are different, while the specifications of the second mating portions of the transition flanges of different specifications are the same. The first mating portion of each specification can be fixedly connected to the first fixing portion of a certain specification, and the second mating portion can be fixedly connected to the second fixing portion.
[0011] As an optional solution, the first fixing part includes a first protrusion, and the extension length, cross-sectional area or cross-sectional shape of the first protrusion in the flywheel housing of the methanol engine of different specifications are different.
[0012] The first mating part includes a first groove. The groove depth, cross-sectional area or cross-sectional shape of the first groove in the transition flange of different specifications are different. The first protrusion of each specification can be mated with the first groove of one specification.
[0013] The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor also includes a first fixing member. When the first protrusion and the first groove are engaged together, the first fixing member can fix the methanol engine flywheel housing and the transition flange.
[0014] As an optional solution, the methanol engine flywheel housing has a first fixing hole, and the transition flange has a first mating hole. When the first protrusion and the first groove are mated together, the first fixing hole and the first mating hole are coaxially connected, and the first fixing member can be fixedly connected to the first fixing hole and the first mating hole in sequence.
[0015] As an optional solution, the methanol engine flywheel housing has a plurality of the first fixing holes, which are arranged circumferentially around the first protrusion, and each of the first fixing holes is corresponding to a first mating hole and a first fixing member.
[0016] As an optional solution, each of the first fixing holes is provided with a first reinforcing rib in the circumferential direction;
[0017] And / or, the first mating hole is provided with a second reinforcing rib in the circumferential direction.
[0018] As an optional solution, the second fixing part includes a second protrusion, and the second mating part includes a second groove. The second groove in the transition flange of different specifications has the same specification, and the second protrusion and the second groove are mated.
[0019] The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor also includes a second fastener. When the second protrusion and the second groove are engaged together, the second fastener can fix the housing of the axial flux permanent magnet synchronous motor and the transition flange.
[0020] As an optional solution, the assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor further includes:
[0021] A torsional vibration damper is installed at the flywheel housing of the methanol engine. The torsional vibration damper has two damping ends, which are respectively connected to the outer shaft of the methanol engine and the rotor shaft of the axial flux permanent magnet synchronous motor. The torsional vibration damper is used to reduce the impact between the outer shaft and the rotor shaft.
[0022] As an optional solution, the assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor further includes:
[0023] A speed detection element is installed at the transition flange and is configured to detect the speed of the flywheel of a methanol engine and / or the speed of the rotor shaft of an axial flux permanent magnet synchronous motor.
[0024] As an optional feature, the transition flange is provided with a lifting hole, which is configured to be lifted and fixed to the vehicle chassis.
[0025] As an optional solution, the assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor further includes:
[0026] A gasket is provided between the methanol engine flywheel housing and the transition flange; and / or, the gasket is provided between the axial flux permanent magnet synchronous motor and the transition flange.
[0027] The beneficial effects of this utility model are:
[0028] The assembly structure of the methanol engine and axial flux permanent magnet synchronous motor provided by this utility model is achieved by setting a first fixing part on multiple methanol engine flywheel housings of different specifications, and setting a first docking part and a second docking part on both ends of multiple transition flanges of different specifications. This ensures that the first fixing parts of different methanol engine flywheel housings have different specifications, and that the first docking parts of different transition flanges also have different specifications. This guarantees that each specification of the first docking part can be fixedly connected to a fixed part of a specific specification, achieving the goal of fixing each specification of methanol engine flywheel housing to a specific specification of transition flange. By setting a second fixing part on the axial flux permanent magnet synchronous motor housing, the second docking parts of different specifications of transition flanges have the same specifications and are fixedly connected to the second fixing part, achieving a fixed connection between the transition flange and the axial flux permanent magnet synchronous motor housing. This enables the assembly and fixing of an axial flux permanent magnet synchronous motor housing of the same specification with methanol engine flywheel housings of different specifications, saving on the production and R&D costs of the axial flux permanent magnet synchronous motor. Attached Figure Description
[0029] Figure 1 This is a first structural schematic diagram of the assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor provided in this embodiment of the utility model;
[0030] Figure 2 This is a second structural schematic diagram of the assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor provided in this embodiment of the utility model;
[0031] Figure 3 This is a cross-sectional schematic diagram of the assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor provided in this embodiment of the utility model.
[0032] In the picture:
[0033] 100. Methanol engine flywheel housing; 200. Axial flux permanent magnet synchronous motor housing; 300. Transition flange; 310. First mating hole; 320. Lifting hole; 400. Torsional vibration damper; 500. Speed detection component. Detailed Implementation
[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0036] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0037] With the continuous development of automotive technology, range extender technology has flourished and gained widespread market application. Taking a methanol engine and an axial flux permanent magnet synchronous motor (ACM) as an example, the outer shaft of the methanol engine is connected to the rotor shaft of the ACM. When the methanol engine needs to be started, the rotor shaft of the ACM drives the outer shaft of the methanol engine to rotate; when the methanol engine is operating normally, the outer shaft of the methanol engine drives the rotor shaft of the ACM to rotate, thus achieving range extension and power generation. For the assembly of the methanol engine and the ACM, the flywheel housing of the methanol engine needs to be fixedly connected to the rotor shaft of the ACM, and then the housing of the ACM needs to be fixed together to ensure the structural strength between the methanol engine and the ACM. However, methanol engines come in different specifications, and the flywheel housing specifications of different specifications are different. To achieve compatibility with different specifications of methanol engines, it is necessary to produce and develop ACM housings of different specifications, which greatly increases the production and R&D costs of the ACM.
[0038] To solve the above problems, such as Figures 1-3As shown, this embodiment provides an assembly structure for a methanol engine and an axial flux permanent magnet synchronous motor. This assembly structure includes an axial flux permanent magnet synchronous motor housing 200, multiple methanol engine flywheel housings 100 of different specifications, and multiple transition flanges 300 of different specifications. Each methanol engine flywheel housing 100 has a first fixing part, and the specifications of the first fixing parts of different specifications of methanol engine flywheel housings 100 are different. The axial flux permanent magnet synchronous motor housing 200 has a second fixing part. Each transition flange 300 has a first mating part and a second mating part, located at opposite axial ends of the transition flange 300. The specifications of the first mating parts of different specifications of transition flanges 300 are different, while the specifications of the second mating parts of different specifications of transition flanges 300 are the same. Each specification of the first mating part can be fixedly connected to a first fixing part of a certain specification, and the second mating part can be fixedly connected to the second fixing part.
[0039] The assembly structure of this methanol engine and axial flux permanent magnet synchronous motor utilizes a first fixing part on multiple methanol engine flywheel housings 100 of different specifications, and a first mating part and a second mating part on both axial ends of multiple transition flanges 300 of different specifications. This ensures that the first fixing parts of the different specifications of the methanol engine flywheel housings 100 have different specifications, and that the first mating parts of the different specifications of the transition flanges 300 also have different specifications. This guarantees that each specification of the first mating part can be fixedly connected to a fixing part of a specific specification, thus achieving a unified connection between the methanol engine flywheel housings 100 and each specification of the motor. The purpose of enabling all housings 100 to be fixedly connected to a transition flange 300 of the same specification is achieved by setting a second fixing part on the housing 200 of the axial flux permanent magnet synchronous motor, so that the second mating part of the transition flanges 300 of different specifications is the same, and the second mating part is fixedly connected to the second fixing part, thus realizing the fixed connection between the transition flange 300 and the housing 200 of the axial flux permanent magnet synchronous motor. This enables the assembly and fixing of the housing 200 of the same specification of the axial flux permanent magnet synchronous motor and the flywheel housing 100 of different specifications of the methanol engine, saving the production and R&D costs of the axial flux permanent magnet synchronous motor.
[0040] Understandably, the different specifications of the first fixing part inside the flywheel housing 100 of different methanol engines are due to the different models of methanol engines. By applying the assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor provided in this embodiment, when dealing with different models of methanol engines, the same specification of the axial flux permanent magnet synchronous motor housing 200 and the different specifications of the methanol engine flywheel housing 100 can be assembled and fixed simply by changing the specifications of the transition flange 300, without the need for specific design of the axial flux permanent magnet synchronous motor for the specific model of the methanol engine. In addition, in other embodiments, the methanol engine can be replaced with other types of engines, and the axial flux permanent magnet synchronous motor can be replaced with other types of motors; this embodiment does not make specific limitations.
[0041] In one alternative embodiment, the first fixing part includes a first protrusion. The extension length, cross-sectional area, and cross-sectional shape of the first protrusion in the methanol engine flywheel housing 100 of different specifications are all different. The first mating part includes a first groove. The groove depth, cross-sectional area, and cross-sectional shape of the first groove in the transition flange 300 of different specifications are all different. Each specification of the first protrusion can be mated with a specification of the first groove. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor also includes a first fixing member. When the first protrusion and the first groove are mated together, the first fixing member can fix the methanol engine flywheel housing 100 and the transition flange 300 together. By setting a first protrusion in the first fixing part, the extension length, cross-sectional area, and cross-sectional shape of the first protrusion in the methanol engine flywheel housing 100 of different specifications are all different. By setting a first groove in the first docking part, the groove depth, cross-sectional area, and cross-sectional shape of the first groove in the transition flange 300 of different specifications are all different. Each set of first protrusions is docked with a first groove of a certain specification, so that each specification of the first docking part corresponds to a first fixing part of a certain specification. Combined with the first fixing member, the methanol engine flywheel housing 100 and the transition flange 300 are fixedly connected in the state of the first protrusion and the first groove docking, thus achieving the effect that each specification of methanol engine flywheel housing 100 is fixedly connected to a transition flange 300 of a certain specification.
[0042] It should be noted that in other embodiments, the groove depth of the first protrusion in the flywheel housing 100 of different specifications may be different, or the cross-sectional area of the first protrusion in the flywheel housing 100 of different specifications may be different, or the cross-sectional shape of the first protrusion in the flywheel housing 100 of different specifications may be different, and it is ensured that the first protrusion of each specification corresponds to the first groove of one specification. This embodiment does not make specific limitations.
[0043] In this embodiment, the methanol engine flywheel housing 100 has a first fixing hole, and the transition flange 300 has a first mating hole 310. When the first protrusion and the first groove are mated together, the first fixing hole and the first mating hole 310 are coaxially connected, and the first fixing member can be sequentially fixedly connected to the first fixing hole and the first mating hole 310. By opening the first fixing hole on the methanol engine flywheel housing 100 and the first mating hole 310 on the transition flange 300, the first fixing hole and the first mating hole 310 can be coaxially connected when the first protrusion and the first groove are mated together. Furthermore, by using the first fixing member to sequentially fix the first fixing hole and the second fixing hole, the purpose of fixing the methanol engine flywheel housing 100 to the transition flange 300 when the first protrusion and the first groove are mated together is achieved.
[0044] It should be noted that in this embodiment, the first fixing component is a bolt, and both the first fixing hole and the first mating hole 310 are threaded holes. With the first protrusion and the first groove mated together, the bolt is sequentially threaded to the first fixing hole and the first mating hole 310. By using threaded fixing to detachably fix the methanol engine flywheel housing 100 and the transition flange 300 together, not only is the fixing effect good, but it also facilitates subsequent inspection and maintenance.
[0045] To further improve the fixing effect between the methanol engine flywheel housing 100 and the transition flange 300, the methanol engine flywheel housing 100 has multiple first fixing holes, which are arranged circumferentially around the first protrusion. Each first fixing hole corresponds to a first mating hole 310 and a first fixing member. It should be noted that, in this embodiment, as... Figure 1 As shown, the transition flange 300 is provided with six first mating holes 310, and correspondingly, the methanol engine flywheel housing 100 is provided with six first fixing holes. In other embodiments, the number of first fixing holes on the methanol engine flywheel housing 100 and the specific number of first mating holes 310 on the transition flange 300 can be adjusted according to actual needs. This embodiment does not impose specific limitations.
[0046] As an optional solution, each first fixing hole is provided with a first reinforcing rib in the circumferential direction, and each first mating hole 310 is provided with a second reinforcing rib in the circumferential direction. By providing a first reinforcing rib in the circumferential direction of each first fixing hole, the structural strength at the location where the methanol engine flywheel housing 100 has the first fixing hole can be improved, thereby improving the overall structural strength of the methanol engine flywheel housing 100. By providing a second reinforcing rib in the circumferential direction of each first mating hole 310, the structural strength at the location where the transition flange 300 has the first mating hole 310 can be improved, thereby improving the overall structural strength of the transition flange 300.
[0047] Optionally, the second fixing part includes a second protrusion, and the second mating part includes a second groove. The second groove in the transition flange 300 of different specifications has the same specification. The second protrusion and the second groove are mated. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor also includes a second fixing member. When the second protrusion and the second groove are mated together, the second fixing member can fix the axial flux permanent magnet synchronous motor housing 200 and the transition flange 300. By providing a second protrusion in the second fixing part and a second groove in the second mating part, the specifications of the second grooves in the transition flanges 300 of different specifications are ensured to be the same. By using the mating of the second protrusion and the second groove, the effect of mating between the transition flanges 300 of different specifications and the axial flux permanent magnet synchronous motor housing 200 of the same specification is achieved. Combined with the second fixing member, the axial flux permanent magnet synchronous motor housing 200 and the transition flange 300 are fixedly connected when the second protrusion and the second groove are mated together. This achieves the effect of fixedly connecting the transition flanges 300 of different specifications and the axial flux permanent magnet synchronous motor housing 200 of the same specification. Combined with the above-mentioned fixed connection between each specification of methanol engine flywheel housing 100 and a transition flange 300 of one specification, the purpose of fixedly connecting the methanol engine flywheel housing 100 of different specifications and the axial flux permanent magnet synchronous motor housing 200 of the same specification is achieved.
[0048] It should be noted that the fixing structure between the second fixing component, the transition flange 300, and the housing 200 of the axial flux permanent magnet synchronous motor is the same as the fixing structure between the first fixing component, the transition flange 300, and the methanol engine flywheel housing 100. For the sake of brevity, it will not be described again here.
[0049] Furthermore, in this embodiment, such as Figure 1 As shown, the transition flange 300 has a lifting hole 320, which is configured to be fixed to the vehicle chassis for lifting. By providing the lifting hole 320 on the transition flange 300 for fixing to the vehicle chassis, the transition flange 300 can be fixedly connected to the vehicle chassis on the basis of the methanol engine flywheel housing 100 being fixedly connected to the vehicle chassis. This further improves the structural strength between the assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor and the vehicle chassis, ensuring the overall structural stability of the vehicle chassis system.
[0050] In an optional embodiment, the assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor further includes gaskets. A gasket is sandwiched between the methanol engine flywheel housing 100 and the transition flange 300, and a gasket is also sandwiched between the axial flux permanent magnet synchronous motor and the transition flange 300. By sandwiching a gasket between the methanol engine flywheel housing 100 and the transition flange 300, the methanol engine flywheel housing 100 and the transition flange 300 can be isolated, improving the protection of the methanol engine flywheel housing 100 and the transition flange 300. Similarly, by sandwiching a gasket between the axial flux permanent magnet synchronous motor housing 200 and the transition flange 300, the axial flux permanent magnet synchronous motor housing 200 and the transition flange 300 can be isolated, improving the protection of the axial flux permanent magnet synchronous motor housing 200 and the transition flange 300.
[0051] As an optional solution, such as Figure 2 As shown, the assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor also includes a speed detection element 500. The speed detection element 500 is installed at the transition flange 300 and is configured to detect the speed of the methanol engine's flywheel and the speed of the axial flux permanent magnet synchronous motor's rotor shaft. By installing the speed detection element 500 at the transition flange 300, and by detecting both the flywheel speed of the methanol engine and the rotor shaft speed of the axial flux permanent magnet synchronous motor, accurate data support can be provided for the subsequent assembly and debugging of the methanol engine and the axial flux permanent magnet synchronous motor. In other embodiments, the speed detection element 500 may only detect the flywheel speed of the methanol engine, or it may only detect the rotor shaft speed of the axial flux permanent magnet synchronous motor; this embodiment does not impose specific limitations. The specific structure and working principle of the speed detection element 500 are existing technologies and will not be described in detail here.
[0052] Optionally, such as Figure 3 As shown, the assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor also includes a torsional vibration damper 400. The torsional vibration damper 400 is installed at the flywheel housing 100 of the methanol engine and has two damping ends. These two damping ends are respectively connected to the outer shaft of the methanol engine and the rotor shaft of the axial flux permanent magnet synchronous motor. The torsional vibration damper 400 is used to reduce the impact between the outer shaft and the rotor shaft. By installing the torsional vibration damper 400 at the flywheel housing 100 of the methanol engine, and connecting its two damping ends to the outer shaft of the methanol engine and the rotor shaft of the axial flux permanent magnet synchronous motor respectively, the impact between the outer shaft and the rotor shaft is reduced by the torsional vibration damper 400, which can effectively improve the smoothness of the connection between the methanol engine and the axial flux permanent magnet synchronous motor and extend their service life. The specific structure and working principle of the torsional vibration damper 400 are existing technologies and will not be described in detail here.
[0053] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. An assembly structure for a methanol engine and an axial flux permanent magnet synchronous motor, characterized in that, include: Multiple methanol engine flywheel housings (100) of different specifications, each of the methanol engine flywheel housings (100) having a first fixing part, the specifications of the first fixing part of the methanol engine flywheel housings (100) of different specifications are different; A housing (200) for an axial flux permanent magnet synchronous motor, the housing (200) having a second fixing part; Multiple transition flanges (300) of different specifications are provided. Each transition flange (300) has a first mating portion and a second mating portion. The first mating portion and the second mating portion are located at opposite axial ends of the transition flange (300). The specifications of the first mating portions of the transition flanges (300) of different specifications are different, while the specifications of the second mating portions of the transition flanges (300) of different specifications are the same. The first mating portion of each specification can be fixedly connected to the first fixing portion of one specification, and the second mating portion can be fixedly connected to the second fixing portion.
2. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor according to claim 1, characterized in that, The first fixing part includes a first protrusion, and the extension length, cross-sectional area or cross-sectional shape of the first protrusion in the methanol engine flywheel housing (100) of different specifications are different; The first mating part includes a first groove. The groove depth, cross-sectional area or cross-sectional shape of the first groove in the transition flange (300) of different specifications are different. The first protrusion of each specification can be mated with the first groove of one specification. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor also includes a first fixing member. When the first protrusion and the first groove are engaged together, the first fixing member can fix the methanol engine flywheel housing (100) and the transition flange (300) together.
3. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor according to claim 2, characterized in that, The methanol engine flywheel housing (100) has a first fixing hole, and the transition flange (300) has a first mating hole (310). When the first protrusion and the first groove are mated together, the first fixing hole and the first mating hole (310) are coaxially connected, and the first fixing member can be fixedly connected to the first fixing hole and the first mating hole (310) in sequence.
4. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor according to claim 3, characterized in that, The methanol engine flywheel housing (100) has a plurality of first fixing holes, which are arranged circumferentially around the first protrusion, and each first fixing hole is corresponding to a first docking hole (310) and a first fixing member.
5. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor according to claim 3, characterized in that, Each of the first fixing holes is provided with a first reinforcing rib in the circumferential direction; And / or, the first mating hole (310) is provided with a second reinforcing rib in the circumferential direction.
6. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor according to claim 1, characterized in that, The second fixing part includes a second protrusion, and the second mating part includes a second groove. The second groove in the transition flange (300) of different specifications has the same specification, and the second protrusion and the second groove are mated. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor also includes a second fastener. When the second protrusion and the second groove are mated together, the second fastener can fix the axial flux permanent magnet synchronous motor housing (200) and the transition flange (300) in a fixed connection.
7. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor according to claim 1, characterized in that, The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor also includes: A torsional vibration damper (400) is installed at the flywheel housing (100) of the methanol engine. The torsional vibration damper (400) has two damping ends, which are respectively connected to the outer shaft of the methanol engine and the rotor shaft of the axial flux permanent magnet synchronous motor. The torsional vibration damper (400) is used to reduce the impact between the outer shaft and the rotor shaft.
8. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor according to claim 1, characterized in that, The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor also includes: A speed detection element (500) is mounted at the transition flange (300) and is configured to detect the speed of the flywheel of a methanol engine and / or the speed of the rotor shaft of an axial flux permanent magnet synchronous motor.
9. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor according to claim 1, characterized in that, The transition flange (300) is provided with a lifting hole (320), which is configured to be lifted and fixed to the vehicle chassis.
10. The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor according to claim 1, characterized in that, The assembly structure of the methanol engine and the axial flux permanent magnet synchronous motor also includes: A gasket is provided between the methanol engine flywheel housing (100) and the transition flange (300); and / or, the gasket is provided between the axial flux permanent magnet synchronous motor and the transition flange (300).