Power generation device and power generation system

Abstract

The present invention relates to a power generation device and a power generation system. The power generation device comprises: an alternator assembly, wherein the alternator assembly comprises a stator assembly, and an accommodating space is formed in the stator assembly; and a controller assembly, which can be partially embedded in the accommodating space. According to the present application, the accommodating space is formed in the stator assembly to release the internal space of the stator assembly, the internal space of the stator assembly can be utilized when the controller assembly is arranged, and the controller assembly is partially embedded in the stator assembly, so that the integration level of the alternator assembly and the controller assembly is improved, and the volume of the power generation device is reduced, thereby reducing the occupation of whole vehicle space.

Description

Power generation device and power generation system

[0001] This application claims priority to a patent application filed with the State Intellectual Property Office of China on January 9, 2024, with application number 202410030443.9 and invention name “A power generation device and power generation system”. Technical Field

[0002] The present invention relates to the technical field of automobile power generation systems, and in particular to a power generation device and a power generation system. Background Art

[0003] As a power generation system in new energy vehicles, the integration method of its generator and controller is particularly important.

[0004] Currently, there are two main ways to integrate generators and controllers. One is a generator device as disclosed in patent number CN105564220B, in which the controller is arranged on the side of the generator. The other is a generator device as disclosed in patent number CN104167861B, in which the controller is arranged above the generator. Both arrangements are relatively complex in structure, large in overall size, and occupy a large space in the entire vehicle. Summary of the Invention

[0005] Based on the above description, the present invention provides a power generation device and a power generation system to solve the problem in the related art that the controller is arranged on the side or above the generator. Both arrangements are relatively complex in structure, large in overall volume, and occupy a large space in the entire vehicle.

[0006] The technical solution of the present invention to solve the above technical problems is as follows:

[0007] In the first aspect, the present application provides a power generation device, the technical solution adopted is as follows:

[0008] A power generation device, comprising:

[0009] A generator assembly includes a stator assembly, wherein the stator assembly is provided with an accommodation space;

[0010] A controller assembly is partially embedded in the accommodating space.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Preferably, the controller assembly includes:

[0013] A cooling device comprising a cooling cylinder, wherein the cooling cylinder is embedded in the accommodating space and a mounting cavity is provided in the cooling cylinder;

[0014] A controller is connected to the cooling device and partially embedded in the installation cavity.

[0015] Preferably, the controller includes a capacitor module and a PCBA module distributed along a first straight line direction, and the capacitor module is embedded in the installation cavity.

[0016] Preferably, the controller further includes a high-voltage direct current module, which is disposed in the installation cavity and distributed with the capacitor module in a plane perpendicular to the first straight line direction.

[0017] Preferably, the cooling device comprises a cooling plate, a plate surface of the cooling plate is perpendicular to the first straight line direction, and the cooling plate and the cooling cylinder are integrally formed.

[0018] Preferably, along the first straight line direction, one end of the cooling cylinder is set to be an opening, the cooling plate is arranged at the open end of the cooling cylinder, the cooling plate is arranged around the opening, and the cooling plate and the cooling cylinder are formed as one piece.

[0019] Preferably, the cooling cylinder is connected to a water inlet interface and a water outlet interface, and the water inlet interface and the water outlet interface are distributed on both sides of the cooling cylinder along a direction perpendicular to the first straight line direction.

[0020] Preferably, the controller assembly further includes a controller housing, which is covered outside the controller, and the cooling device is connected to the controller housing, and the controller housing is used to be connected to the generator assembly.

[0021] Preferably, the stator assembly is annular, and an accommodating space is formed inside the stator assembly.

[0022] Preferably, the generator assembly further includes a rotor assembly, the rotor assembly includes an annular rotor, the rotor is sleeved outside the stator assembly, and the rotor assembly is rotatably arranged around the rotor axis relative to the stator assembly.

[0023] Preferably, the rotor assembly further includes a rotor bracket, the rotor bracket includes a connecting disk, the rotor is connected to the connecting disk, the connecting disk includes a connecting surface perpendicular to the rotor axis, the connecting surface is provided with a plurality of connecting holes, and the plurality of connecting holes are spaced around the rotor axis.

[0024] Preferably, the rotor bracket further includes a support tube, which is coaxial with the rotor and connected to the connecting disk, and the rotor is located in the support tube and connected to the support tube.

[0025] Preferably, the generator assembly and the controller assembly are arranged and connected along the axial direction of the rotor.

[0026] Preferably, the generator assembly further includes a generator housing, the generator housing including a mounting cylinder, the mounting cylinder being embedded in the accommodating space and connected to the stator assembly, a accommodating cavity being provided in the mounting cylinder, and the accommodating cavity being suitable for partial embedding of the controller assembly.

[0027] Preferably, the generator housing includes an outer shell connected to the mounting barrel, and the outer shell cover is arranged outside the stator assembly and is used to be connected to the controller assembly.

[0028] Preferably, it further includes a generator housing, wherein the stator assembly and the rotor assembly are arranged in the generator housing, and the generator housing is used to be connected to the controller assembly.

[0029] Preferably, the generator housing is an integrally formed structure.

[0030] Preferably, the generator assembly and the controller assembly are detachably connected.

[0031] Preferably, the generator assembly further includes a resolver stator and a resolver rotor, the resolver stator is connected to the stator assembly, the resolver stator is annular and coaxial with the rotor, and the resolver rotor is connected to the rotor assembly and is located inside the resolver stator.

[0032] In a second aspect, an embodiment of the present application provides a power generation system, which includes the power generation device and an engine as described above.

[0033] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0034] 1. In the power generation device of the present application, a storage space is provided within the stator assembly to free up space within the stator assembly. When arranging the controller assembly, the internal space of the stator assembly can be utilized to partially embed the controller assembly within the stator assembly, thereby improving the integration of the generator assembly and the controller assembly, reducing the size of the power generation device, and thus reducing the space occupied by the vehicle;

[0035] 2. The controller assembly structure in this application is designed in accordance with the stator assembly structure. A cooling cylinder is embedded in the inner side of the stator assembly, and a mounting cavity is formed in the cooling cylinder to accommodate the controller components. The cooling cylinder can effectively cool the stator assembly and the controller, and the cooling system layout is simple.

[0036] 3. In the controller assembly of the present application, the capacitor module and PCBA module of the controller are distributed along a first linear direction. The capacitor module and high-voltage DC module are embedded in the cooling cylinder and distributed in a plane perpendicular to the first linear direction. This can reduce the volume of the controller in the first linear direction. During design, the first linear direction is parallel to the rotation axis of the rotor in the generator assembly, thereby reducing the space occupied by the controller in the axial direction of the generator rotor rotation axis. In addition, the water inlet and outlet interfaces are also distributed in a plane perpendicular to the first linear direction, further reducing the space occupied by the controller assembly in the axial direction of the generator rotor rotation axis.

[0037] 4. The generator housing of the present application includes an outer shell and a mounting barrel. The mounting barrel facilitates the installation of the stator assembly. The mounting barrel and the outer shell form a generator housing that encloses the generator components to form an integrated generator assembly. The controller housing, cooling device, and controller in the controller assembly form an integrated controller assembly. The separable connection between the generator assembly and the controller assembly allows the generator assembly and the controller assembly to be used as independent products or combined to form a power generation device assembly product, which better meets market demand.

[0038] 5. In the rotor assembly of the present application, a connection surface and multiple connection holes are provided on the connection plate of the rotor bracket, which facilitates the connection between the rotor bracket and the engine crankshaft by bolts, eliminating the need for intermediate connecting shafts and other structures, reducing the number of parts and the overall weight of the assembly;

[0039] 6. In the power generation device of the present application, the engine output power drives the rotor assembly to rotate. When the rotor assembly rotates, it interacts with the stator assembly inside it to generate and output electricity. In addition to serving as a generator rotor, the rotor assembly also serves as a flywheel to store rotational kinetic energy to reduce the output torque fluctuation of the engine, replacing the traditional flywheel vibration reduction structure to reduce the number of parts and layout space. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG1 is a schematic structural diagram of a power generation system provided by an embodiment of the present invention;

[0041] FIG2 is an exploded view of a power generation system provided by an embodiment of the present invention;

[0042] FIG3 is a schematic structural diagram of a power generation device provided by an embodiment of the present invention;

[0043] FIG4 is a schematic structural diagram of a rotor assembly in a power generation device according to an embodiment of the present invention;

[0044] FIG5 is a cross-sectional view of a rotor assembly in a power generation device according to an embodiment of the present invention;

[0045] FIG6 is a schematic structural diagram of a controller in a power generation device provided by an embodiment of the present invention.

[0046] In the accompanying drawings, the list of components represented by each reference number is as follows: 1. Engine; 11. Crankshaft; 2. Generator assembly; 21. Generator housing; 211. Mounting cylinder; 212. Housing; 22. Stator assembly; 23. Rotor assembly; 231. Rotor bracket; 2311. Support cylinder; 2312. Connecting plate; 23121. Connecting surface; 23122. Connecting hole; 232. Rotor; 24. Resolver stator; 25. Resolver rotor; 3. Controller assembly; 31. Cooling device; 311. Cooling cylinder; 312. Cooling plate; 313. Water inlet interface; 314. Water outlet interface; 32. Controller; 321. Capacitor module; 322. PCBA module; 323. High-voltage DC module; 3231. DC copper busbar; 324. Vehicle low-voltage interface; 325. High-voltage DC interface; 33. Controller housing. DETAILED DESCRIPTION

[0047] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0049] It will be understood that spatial relational terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be understood that in addition to the orientations shown in the figures, spatial relational terms also include different orientations of the device in use and operation. For example, if the device in the drawings is turned over, the element or feature described as "under" or "beneath" or "beneath" the other elements will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include alternative orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0050] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection" should be understood as "electrical connection", "communication connection", etc., if the connected circuits, modules, units, etc. can transmit electrical signals or data to each other.

[0051] When used herein, the singular forms "a", "an", and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0052] 1-6 , an embodiment of the present application provides a power generation system, which includes an engine 11 and a power generation device, wherein the power generation device is connected to the engine 11 to convert mechanical energy output by the engine 11 into electrical energy and store it in a battery.

[0053] 1-3 , the power generation device includes a generator assembly 2 and a controller assembly 3. The generator assembly 2 is used to be connected to the engine 1 and convert the mechanical energy output by the engine 1 into electrical energy output. The controller assembly 3 is used to rectify the AC power of the generator assembly 2 into DC power, thereby outputting it to the battery.

[0054] 1-3 , the generator assembly 2 includes a generator housing 21 , a stator assembly 22 and a rotor assembly 23 .

[0055] As shown in Figures 2-5, the rotor assembly 23 is connected to the crankshaft 11 of the engine 1 so as to drive the rotor assembly 23 to rotate through the engine 1. Specifically, the rotor assembly 23 includes a rotor bracket 231 and a ring-shaped rotor 232. The rotor 232 is connected to the rotor bracket 231 and is coaxial with the crankshaft 11 of the engine 1. The rotor bracket 231 is connected to the crankshaft 11 of the engine 1; the rotor bracket 231 includes a support tube 2311 and a connecting disk 2312. The support tube 2311 is coaxial with the rotor 232 and is connected to the connecting disk 2312. The rotor 232 is located in the support tube 2311 and is connected to the support tube 2311. The connecting disk 2312 is located in the support tube 2311 and is connected to the support tube 2311. The connecting disk 2312 includes a connecting surface 23121 perpendicular to the axis of the rotor 232. A plurality of connecting holes 23122 are provided on the connecting surface 23121. The plurality of connecting holes 23122 are arranged at intervals around the axis of the rotor 232. In this embodiment, the rotor 232 and the support tube 2311 are interference fit, the connecting disk 2312 is connected to one end of the support tube 2311, and the end of the support tube 2311 away from the connecting disk 2312 is limited by a rotary riveting process. The connecting disk 2312 and the support tube 2311 are integrally formed to form a rotor bracket 231. The middle part of the connecting disk 2312 is set to a plane perpendicular to the axis of the rotor 232 to form a connecting surface 23121, and the connecting hole 23122 is a through hole. Correspondingly, a flange plate that cooperates with the connecting surface 23121 is set on the crankshaft 11 of the engine 1, so that the connecting disk 2312 and the crankshaft 11 of the engine 1 are connected by bolts, thereby realizing the connection between the rotor assembly 23 and the crankshaft 11 of the engine 1.

[0056] Through this arrangement, on the one hand, the rotor bracket 231 serves to connect the rotor 232 and the crankshaft 11. At the same time, the rotor bracket 231 can serve as a flywheel to stabilize the output torque of the engine 1. When designing the generator, the weight of the rotor bracket 231 and the rotor 232 core can be adjusted as needed to adapt to the different rotational inertia requirements of the crankshaft 11 of the engine 1; on the other hand, the rotor bracket 231 is connected and fixed to the crankshaft 11 by bolts by setting a connecting surface 23121 on the connecting disk 2312. The structure is simple and there is no need to add additional connecting structures such as additional connecting shafts, thereby reducing the number of parts and the overall weight of the assembly.

[0057] 1-3 , further, the stator assembly 22 is arranged on the inner side of the rotor 232, that is, the rotor 232 is arranged around the stator assembly 22, and the rotor 232 can rotate around its axis relative to the stator assembly 22; an accommodating space is provided in the stator assembly 22 for partial embedding of the controller assembly 3, and correspondingly, the controller assembly 3 is partially arranged to be embedded in the accommodating space.

[0058] 1-3 , specifically, in this embodiment, the stator assembly 22 is annular, with a receiving space formed inside, and the stator assembly 22 and the rotor 232 are coaxial; the generator housing 21 is disposed outside the stator assembly 22 and the rotor assembly 23 and is connected to the engine 1, and the stator assembly 22 is connected to the generator housing 21 so that when the generator assembly 2 is connected to the engine 1, the stator assembly 22 is fixed to the engine 1, and when the engine 1 outputs power to drive the rotor assembly 23 to rotate, the rotor assembly 23 and the stator assembly 22 cooperate to convert mechanical energy into electrical energy.

[0059] In this embodiment, in the stator assembly 22, the stator winding controls the end height below the set value through the external wire feeding process and S-Widing winding technology, thereby achieving a compact axial space and eliminating the end welds, which can reduce both the end height and the welding resistance, thereby improving efficiency.

[0060] 1-3 , further, in order to partially embed the controller assembly 3 in the accommodating space inside the stator assembly 22, the generator housing 21 is configured to include an outer shell 212 and a mounting tube 211. The mounting tube 211 is embedded in the accommodating space and connected to the stator assembly 22. A accommodating cavity is provided in the mounting tube 211, and the accommodating cavity is suitable for partial embedding of the controller assembly 3.

[0061] Specifically, the mounting cylinder 211 is adapted to the inner accommodation space of the stator assembly 22, and the accommodation cavity of the mounting cylinder 211 is provided with an opening along the axial direction of the stator assembly 22 and at the end away from the engine 1, so that the controller assembly 3 can be embedded in the accommodation cavity. The accommodation cavity of the mounting cylinder 211 along the axial direction of the stator assembly 22 and at the end close to the engine 1 is not provided with an opening, but is provided with a wiring hole for external connection of the generator. The outer shell 212 is provided outside the stator assembly 22 and the rotor assembly 23 and is integrally formed with the mounting cylinder 211. The outer shell 212 is connected to the engine 1 by bolts. In this embodiment, the rotor 232 and the stator assembly 22 are both provided in an annular shape. Correspondingly, the mounting cylinder 211 is cylindrical and coaxial with the stator assembly 22. The stator assembly 22 surrounds the outside of the mounting cylinder 211 and is fixed to the mounting cylinder 211. Through the above arrangement, the generator housing 21 formed by the mounting cylinder 211 and the outer shell 212 wraps the stator assembly 22 and the rotor assembly 23 to form an integrated generator assembly 2. At the same time, the cavity contained in the mounting cylinder 211 reserves space for the arrangement of the controller assembly 3.

[0062] 2-3 , the generator assembly 2 further includes a resolver stator 24 and a resolver rotor 25. The resolver stator 24 is connected to the stator assembly 22. The resolver stator 24 is annular and coaxial with the rotor 232. The resolver rotor 25 is connected to the rotor assembly 23 and is located in the resolver stator 24. Specifically, the resolver stator 24 is fixedly connected to the mounting cylinder 211. The end surface of the mounting cylinder 211 close to the engine 1 is recessed into the accommodating cavity to form a receiving groove for accommodating the resolver stator 24. The resolver stator 24 is located in the accommodating groove and fixed to the mounting cylinder 211, while the resolver rotor 25 is fixedly connected to the connecting plate 2312 and coaxial with the rotor 232. The resolver rotor 25 is located on the inner side of the resolver stator 24. The resolver rotor 25 rotates with the rotor assembly 23 and cooperates with the resolver stator 24 to generate current. The controller 32 monitors the current to monitor the generator speed.

[0063] 1-3 , further, the controller assembly 3 is used to be connected to the generator housing 21, and the structure of the controller assembly 3 is designed according to the structure of the generator assembly 2; the generator housing 21 is provided with a mounting tube 211, and the mounting tube 211 is embedded in the stator assembly 22 to form a accommodating cavity, that is, the accommodating cavity is located in the accommodating space inside the stator assembly 2, so that the inner space of the stator assembly 2 is used to arrange and accommodate the controller assembly 3, and the accommodating cavity is located at one end of the generator assembly 2 along the axial direction of the stator assembly 22, and is arranged away from the engine 1. Therefore, when the controller assembly 3 is set, it is distributed in the axial direction of the stator assembly 22 with the generator assembly 2; when the power generation device is connected to the engine 1, the controller assembly 3 and the motor assembly are arranged in the axial direction of the crankshaft 11, and the generator assembly 2 is located between the controller assembly 3 and the engine 1.

[0064] The controller assembly 3 includes a cooling device 31 , a controller 32 and a controller housing 33 .

[0065] As shown in Figures 2-3, the cooling device 31 includes a cooling cylinder 311 and a cooling plate 312. The cooling cylinder 311 is arranged in the installation cavity to accommodate a part of the controller 32, and the cooling cylinder 311 is configured to be embedded in the accommodating cavity; specifically, the shape of the cooling cylinder 311 is designed according to the shape of the accommodating cavity in the installation cylinder 211, so that when the cooling cylinder 311 is embedded in the accommodating cavity, the gap between the cooling cylinder 311 and the installation cylinder 211 is as small as possible, so as to make full use of the accommodating cavity and make the installation cavity as large as possible.

[0066] As shown in Figures 2-3, in this embodiment, the cooling tube 311 is cylindrical and coaxial with the stator assembly 22. One end of the cooling tube 311 along the axial direction of the stator assembly 22 is set to be open for the controller 32 to be partially embedded in the installation cavity, and the other end is provided with a wire hole and other structures for the line to pass through; the plane of the cooling plate 312 is perpendicular to the axis of the stator assembly 22, and the cooling plate 312 surrounds the outside of the cooling tube 311 and is located at the open end of the cooling tube 311. The cooling plate 312 and the cooling tube 311 are integrally formed, and correspondingly, cooling water paths are provided in the cooling plate 312 and the cooling tube 311, and a water inlet interface 313 and a water outlet interface 314 are connected to the cooling plate 312, so that the cooling plate 312 is connected to the cooling water path of the whole vehicle to realize cooling water circulation; the water inlet interface 313 and the water outlet interface 314 are distributed on both sides of the cooling plate 312 along the direction perpendicular to the axis of the stator assembly 22.

[0067] 2-3 and 6 , the controller 32 is connected to the cooling device 31 and partially embedded in the mounting cavity. The controller 32 includes a capacitor module 321, a PCBA module 322, and a high-voltage DC module 323. The capacitor module 321 and the PCBA module 322 are arranged along a first linear direction, and the capacitor module 321 is embedded in the mounting cavity of the cooling tube 311. Specifically, the first linear direction is a direction parallel to the axis of the stator assembly 22. The high-voltage DC module 323 is also embedded in the mounting cavity of the cooling tube 311, and the high-voltage DC module 323 and the capacitor module 321 are arranged in a plane perpendicular to the first linear direction. The PCBA module 322 is located outside the mounting cavity and is fixed to the cooling plate 312 by bolts. During design, the shape of the capacitor module 321 is designed based on the mounting cavity in the cooling tube 311, so that the flashlight module can be accommodated in the mounting cavity and the mounting cavity is fully utilized. The mounting cavity is used to arrange the capacitor module 321 and the high-voltage DC module 323 to reduce the space occupied by the controller assembly 3 in the axial direction of the stator assembly 22.

[0068] As shown in Figure 6, the high-voltage DC module 323 is connected to the high-voltage DC interface 325 through the DC copper bus 3231 to connect to the high-voltage DC line of the entire vehicle. The PCB board plane in the PCBA module 322 is perpendicular to the axis of the stator assembly 22, and the PCBA module 322 is integrated with the power module assembly and the low-voltage interface 324 of the entire vehicle.

[0069] 2-3 and 6 , further, the water inlet interface 313 and the water outlet interface 314 and the PCBA module 322 are all distributed on a plane perpendicular to the axis of the stator assembly 22, that is, the sub-assembly of the controller 32 and the water inlet and outlet of the cooling device 31 are arranged in a plane perpendicular to the axis of the stator assembly 22, further reducing the axial space of the engine 1 crankshaft 11 occupied by the controller assembly 3.

[0070] As shown in Figure 2-3, the controller housing 33 is connected to the generator housing 21 and is covered outside the controller 32. Specifically, the cooling plate 312 is located in the controller housing 33 and is connected to the controller housing 33 by bolts. The controller housing 33 and the generator housing 21 are provided with mutually matching flange surfaces so that the generator assembly 2 and the controller assembly 3 can be connected by bolts, and the generator assembly 2 and the controller assembly 3 can be detachably connected at the same time; the cooling device 31 and the controller housing 33 wrap the controller 32 inside to form an integrated controller assembly 3, and the protection level requirements of IP and IPKK can be achieved for the controller assembly 3.

[0071] Specifically, the water inlet interface 313 and the water outlet interface 314 both pass through the controller housing 33 to connect to the vehicle cooling water circuit. The high-voltage DC interface 325 is located outside the controller housing 33 and is connected to the controller housing 33, and is connected to the DC copper bus 3231 passing through the controller housing 33, so that the high-voltage DC module 323 is connected to the high-voltage DC plug-in of the vehicle through the high-voltage DC interface 325; in this embodiment, the water inlet interface 313 passes through the controller housing 33 with its axis at an angle to the axis of the stator assembly 22 and tilted away from the engine 1, and the water outlet interface 314 passes through the controller housing 33 with a posture perpendicular to the axis of the stator assembly 22.

[0072] This application has the following advantages:

[0073] 1. A new structural layout adopts a generator structure in which the stator is inside the rotor 232, freeing up the internal space of the stator assembly 22 for arranging the controller assembly 3, leaving as much axial space as possible for the entire vehicle.

[0074] 2. The rotor 232 is multifunctional. The rotor assembly 23 can generate electrical energy output with the stator assembly 22, and can also replace the flywheel to store rotational kinetic energy to reduce the torque fluctuation of the crankshaft 11 of the engine 1. The engine 1 omits the torsional vibration damper, further reducing costs.

[0075] 3. An efficient thermal management system, which adopts the structural form of cooling plate 312 and cooling cylinder 311 and is embedded in the generator assembly 2, can effectively cool the generator and controller 32 to ensure continuous power output.

[0076] 4. The integrated design of the generator assembly 2 and the controller assembly 3 achieves high mass power density and high volume power density.

[0077] 5. The generator assembly 2 and the controller assembly 3 are designed to be integrated and can be used as separate products or combined as an assembly product to better meet market demand.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A power generation device, characterized in that, Comprising: A generator assembly (2), which includes a stator assembly (22), and an accommodation space is provided inside the stator assembly (22); A controller assembly (3), and a part of the controller assembly (3) is embedded in the accommodation space.

2. The power generation device according to claim 1, characterized in that The controller assembly (3) includes: A cooling device (31), which includes a cooling cylinder (311), the cooling cylinder (311) is embedded in the accommodation space, and an installation cavity is provided inside the cooling cylinder (311); A controller (32), which is connected to the cooling device (31) and partially embedded in the installation cavity.

3. The power generation device according to claim 2, characterized in that: The controller (32) includes a capacitor module (321) and a PCBA module (322) distributed along a first straight line direction, and the capacitor module (321) is embedded in the installation cavity.

4. The power generation device according to claim 3, characterized in that: The controller (32) further includes a high-voltage DC module (323), the high-voltage DC module (323) is arranged in the installation cavity, and is distributed in a plane perpendicular to the first straight line direction with the capacitor module (321).

5. The power generation device according to claim 3, wherein: The cooling device (31) includes a cooling plate (312), the plate surface of the cooling plate (312) is perpendicular to the first straight line direction, and the cooling plate (312) is integrally formed with the cooling cylinder (311).

6. The power generation device according to claim 5, characterized in that: Along the first straight line direction, one end of the cooling cylinder (311) is set as an opening, the cooling plate (312) is arranged at the opening end of the cooling cylinder (311), the cooling plate (312) surrounds the opening, and the cooling plate (312) is integrally formed with the cooling cylinder (311).

7. The power generation device according to claim 3, characterized in that: The cooling cylinder (311) is connected with a water inlet interface (313) and a water outlet interface (314), and the water inlet interface (313) and the water outlet interface (314) are distributed on both sides of the cooling cylinder (311) along a direction perpendicular to the first straight line direction.

8. The power generation device according to claim 2, wherein: The controller assembly (3) further includes a controller housing (33), which covers the controller (32) outside, and the cooling device (31) is connected to the controller housing (33), and the controller housing (33) is used for connecting with the generator assembly (2).

9. The power generation device according to claim 1, wherein: The stator assembly (22) is annular, and an accommodation space is formed inside the stator assembly (22).

10. The power generation device according to claim 1, characterized in that: The generator assembly (2) further includes a rotor assembly (23), the rotor assembly (23) includes an annular rotor (232), the rotor (232) is sleeved outside the stator assembly (22), and the rotor assembly (23) is rotatably arranged relative to the stator assembly (22) around the axis of the rotor (232).

11. The power generation device according to claim 10, characterized in that: The rotor assembly (23) further includes a rotor bracket (231), the rotor bracket (231) includes a connecting disk (2312), the rotor (232) is connected to the connecting disk (2312), the connecting disk (2312) includes a connecting surface (23121) perpendicular to the axis of the rotor (232), and a plurality of connecting holes (23122) are provided on the connecting surface (23121), and the plurality of connecting holes (23122) are arranged at intervals around the axis of the rotor (232).

12. The power generation device according to claim 11, wherein: The rotor bracket (231) further includes a support cylinder (2311). The support cylinder (2311) is coaxial with the rotor (232) and connected to the connection disk (2312). The rotor (232) is located inside the support cylinder (2311) and connected to the support cylinder (2311).

13. The power generation device according to claim 10, wherein: The generator assembly (2) and the controller assembly (3) are arranged and connected along the axial direction of the rotor (232).

14. The power generation device according to claim 1, wherein: The generator assembly (2) further includes a generator housing (21). The generator housing (21) includes a mounting cylinder (211). The mounting cylinder (211) is embedded in the accommodation space and connected to the stator assembly (22). A receiving cavity is provided in the mounting cylinder (211), and the receiving cavity is adapted to receive a part of the controller assembly (3) for embedding.

15. The power generation device according to claim 14, characterized in that: The generator housing (21) includes a housing (212) connected to the mounting cylinder (211). The housing (212) covers the outside of the stator assembly (22) and is used for connecting to the controller assembly (3).

16. The power generation device according to claim 10, characterized in that: It further includes a generator housing (21). The stator assembly (22) and the rotor assembly (23) are arranged inside the generator housing (21), and the generator housing (21) is used for connecting to the controller assembly (3).

17. The power generation device according to claim 14, characterized in that: The generator housing (21) is an integrally formed structure.

18. The power generation device according to claim 1, wherein: The generator assembly (2) and the controller assembly (3) are detachably connected.

19. The power generation device according to claim 10, characterized in that: The generator assembly (2) further includes a resolver stator (24) and a resolver rotor (25). The resolver stator (24) is connected to the stator assembly (22). The resolver stator (24) is annular and coaxial with the rotor (232). The resolver rotor (25) is connected to the rotor assembly (23) and located inside the resolver stator (24).

20. A power generation system, characterized in that, It includes the power generation device according to any one of claims 1-19 and the engine (1).

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