Power generation device and new energy automobile

Abstract

The utility model relates to the technical field of new energy automobile generators, and provides a power generation device and a new energy automobile, the power generation device comprises a stator assembly, a rotor assembly, a mechanical pump, a shell and a heat exchanger, the stator assembly, the rotor assembly and the mechanical pump are all located in the shell, the heat exchanger is arranged outside the shell, the stator assembly comprises a stator body, and the stator body is located in the shell. The rotor assembly is arranged in the stator body and comprises a rotor body, a rotor shaft is arranged on the rotor body, a first cavity is formed in the axis part of one end of the rotor shaft, and the other end of the rotor shaft is connected with an external driving shaft; the mechanical pump is arranged in the rotor body, and a pump shaft of the mechanical pump is fixedly mounted in the first cavity; the shell comprises a lower shell and an upper shell, and a hollow boss used for being fixedly connected with the mechanical pump is arranged at the axis position of the upper shell. The radial size and the axial size of the power generation system structure can be effectively reduced, and the structure of the power generation system can be greatly simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle generators, and in particular to a power generation device and a new energy vehicle. Background Art

[0002] In recent years, new energy vehicles have developed rapidly. As the technical core of new energy vehicles, their power generation systems are increasingly recognized by consumers. High performance and small size have become the mainstream research direction of power generation systems. In order to further improve the performance of power generation systems and reduce the size of power generation systems, the industry has put forward higher requirements for the structural design of power generation systems.

[0003] In the prior art, Chinese Patent No.: CN117341459A provides an integrated drive system and vehicle, including: a motor assembly, a reducer assembly, a motor controller and an oil circulation module, wherein the oil circulation module includes an oil pump, the oil pump is fixedly connected to at least one of the motor assembly and the reducer assembly, and the oil pump is connected to the housing of the reducer assembly. The above method makes the power generation system structure larger in volume; CN219875361U proposes a three-in-one DC generator system assembly structure, the generator also includes an oil channel for cooling, a cooperative gear is provided on the side of the driven gear away from the driving gear, the cooperative gear is meshed with the driven gear, the driven gear drives the cooperative gear to rotate, drags the oil pump to work, and supplies oil to the oil channel. The above method, through the transmission of multiple gear structures, makes the power generation system structure more complicated. Utility Model Content

[0004] The utility model preferably provides a solution to the technical problem of large volume of the power generation system structure in the prior art.

[0005] Furthermore, the utility model also provides a solution to the technical problem of complex structure of the power generation system in the prior art.

[0006] In order to solve the above technical problems:

[0007] In a first aspect, the present application provides a power generation device, comprising:

[0008] The rotor assembly 20 includes a rotor body 21 on which a rotor shaft 211 is disposed;

[0009] Mechanical pump 30; The mechanical pump 30 is disposed inside the rotor body 21, and the mechanical pump 30 includes a pump shaft 31, and the pump shaft 31 is fixedly connected to one end of the rotor shaft 211;

[0010] Housing 50; the housing 50 includes a lower housing 53 and an upper housing 54;

[0011] A hollow boss 541 for fixedly connecting with the mechanical pump 30 is provided at the axial center of the upper shell 54 .

[0012] Preferably, a first cavity 2111 is provided at the axial center of the rotor shaft 211 , and the pump shaft 31 is installed in the first cavity 2111 .

[0013] Preferably, a second cavity 212 is provided on the rotor body 21 , the mechanical pump 30 is disposed inside the second cavity 212 , and the hollow boss 541 is partially embedded in the second cavity 212 .

[0014] Preferably, the axial length of the mechanical pump 30 is not greater than the depth of the second cavity 212 .

[0015] Preferably, the second cavity 212 is communicated with the first cavity 2111 .

[0016] Preferably, only the mechanical pump 30 is disposed in the second cavity 212 .

[0017] Preferably, the other end of the rotor shaft 211 is connected to an external drive shaft.

[0018] Preferably, it also includes:

[0019] The stator assembly 10 includes a stator body 11 ; the rotor assembly 20 is disposed inside the stator body 11 .

[0020] Preferably, an oil pool 51 and an oil guide groove 52 are provided on the housing 50 , and the oil pool 51 , the oil guide groove 52 and the mechanical pump 30 are connected in sequence to form an oil supply circuit.

[0021] Preferably, the oil pool 51 is disposed on the lower shell 53 , and the oil guide groove 52 is disposed on the upper shell 54 .

[0022] Preferably, a through hole 531 for installing the rotor shaft 211 is provided on the bottom surface of the lower shell 53 .

[0023] Preferably, it also includes:

[0024] Heat exchanger 60 : The heat exchanger 60 is disposed outside the housing 50 .

[0025] In a second aspect, the present application provides a new energy vehicle, comprising the power generation device as described above.

[0026] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0027] The utility model can effectively reduce the radial dimensions of the power generation system structure by arranging the mechanical pump inside the rotor body. Furthermore, the utility model can effectively reduce the axial dimensions of the power generation system structure by installing the pump shaft of the mechanical pump in a cavity at the axial center of the rotor shaft. The hollow boss arranged at the axial center of the upper shell can enhance the mechanical strength of the connection between the shell and the mechanical pump, thereby enhancing the service life of the power generation device.

[0028] Furthermore, the utility model fixes the pump shaft, the rotor shaft and the external drive shaft in sequence, eliminating the need to provide a complex gear transmission mechanism on the pump shaft and the rotor shaft. This not only solves the power problem of the mechanical pump and the rotor body, but also greatly simplifies the structure of the power generation system and optimizes the overall structure of the power generation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic diagram of the exploded structure of a power generation device provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of an upper shell structure of a power generation device provided in an embodiment of the present application;

[0032] Figure 3 A schematic diagram of the lower shell structure of a power generation device provided in an embodiment of the present application;

[0033] Figure 4 A schematic diagram of a top view of a power generation device provided in an embodiment of the present application;

[0034] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at A-A.

[0035] In the figure: 10 - stator assembly, 11 - stator body; 20 - rotor assembly, 21 - rotor body, 211 - rotor shaft, 2111 - first cavity, 212 - second cavity; 30 - mechanical pump, 31 - pump shaft; 40 - resolver terminal; 50 - housing, 51 - oil pool, 52 - oil guide groove, 53 - lower housing, 531 - through hole, 54 - upper housing, 541 - hollow boss; 60 - heat exchanger; 70 - high-pressure cover plate. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] In the prior art, the components of the generator in a new energy vehicle need to be cooled when the generator is in operation. A common design is that a mechanical pump is disposed outside the generator housing and a multiple gear structure transmission needs to be designed. This not only increases the volume of the power generation system structure, but also makes the power generation system structure complicated.

[0038] In view of this, this embodiment provides a power generation device, such as Figure 1 - Figure 5 As shown, it includes: a stator assembly 10, a rotor assembly 20, a mechanical pump 30, a housing 50 and a heat exchanger 60. The stator assembly 10, the rotor assembly 20 and the mechanical pump 30 are all located inside the housing 50, and the heat exchanger 60 is arranged outside the housing 50. The stator assembly 10 and the rotor assembly 20 are used to realize the power generation function. The mechanical pump 30 can be an oil pump or a water pump, etc. The mechanical pump 30 is used to extract the coolant and allow the coolant to circulate between the stator assembly 10, the rotor assembly 20 and the housing 50. The heat exchanger 60 is used to conduct the heat away, which can prevent the housing 50 and the stator assembly 10 and the rotor assembly 20 inside from being too high.

[0039] In this embodiment, the stator assembly 10 includes a stator body 11, and the rotor assembly 20 is arranged inside the stator body 11. The rotor assembly 20 includes a rotor body 21, and a rotor shaft 211 is provided on the rotor body 21. The mechanical pump 30 is arranged inside the rotor body 21, which can effectively reduce the radial dimension of the power generation system structure compared with the traditional technical solution. The mechanical pump 30 includes a pump shaft 31, and the pump shaft 31 is fixedly connected to one end of the rotor shaft 211, and the pump shaft 31 can be directly driven by the rotor shaft 211. Preferably, the pump shaft 31 is coaxially arranged with the rotor shaft 211 to reduce the centrifugal force of the mechanical pump 30 during the transmission process and improve the transmission efficiency. Furthermore, the other end of the rotor shaft 211 is connected to the external drive shaft, which includes a drive shaft that can be an engine or a reducer. Similarly, the rotor shaft 211 and the external drive shaft are also coaxially arranged. By connecting the pump shaft 31, the rotor shaft 211 and the external drive shaft in sequence, the external drive shaft can drive the pump shaft 31 and the rotor shaft 211 at the same time. Compared with traditional technical solutions, the structure of the power generation system can be greatly simplified.

[0040] Furthermore, a first cavity 2111 is provided at the axial center of the rotor shaft 211, and the pump shaft 31 is installed in the first cavity 2111. By installing the pump shaft 31 of the mechanical pump 30 in the first cavity 2111 at the axial center of the rotor shaft 211, the axial dimension of the power generation system structure can be effectively reduced.

[0041] As some of the preferred embodiments, Figure 5 As shown, the rotor body 21 is provided with a second cavity 212, and the second cavity 212 is connected to the first cavity 2111. The second cavity 212 is used to accommodate the mechanical pump 30. Specifically, the mechanical pump 30 is arranged inside the second cavity 212. Furthermore, the axial length of the mechanical pump 30 is not greater than the depth of the second cavity 212. Through the above-mentioned mechanism design, the mechanical pump 30 can be completely located inside the rotor body 21, thereby ensuring that the axial dimension of the overall structure of the power generation system is in a small state. In addition, from Figure 5 It can be seen that only the mechanical pump 30 is provided in the second cavity 212. In addition to the mechanical pump 30, there are no other components in the second cavity 212; therefore, technical risks such as too many components leading to an overly complex structure of the power generation system and too high material costs can be prevented.

[0042] This embodiment provides a power generation device. Based on the structure of the above power generation device, a simple and more efficient cooling structure is also provided, which can realize the synchronous cooling of the stator assembly 10, the rotor assembly 20 and the housing 50. This cooling structure is also applicable to oil-cooled or water-cooled power generation devices. Taking the oil cooling implementation process as an example, Figure 3 - Figure 4As shown, the housing 50 is provided with an oil pool 51 and an oil guide groove 52. The number and position of the oil pool 51 and the oil guide groove 52 are not specifically limited, and the principle is not to interfere with or affect the power generation of the power generation device. The oil pool 51 is used for pre-storage of cooling oil, and the oil guide groove 52 is used for guiding the cooling oil. The oil pool 51, the oil guide groove 52 and the mechanical pump 30 are connected in sequence to form an oil supply circuit, and finally realize the synchronous cooling of the stator assembly 10, the rotor assembly 20 and the housing 50. The housing 50 includes a lower shell 53 and an upper shell 54, and the lower shell 53 and the upper shell 54 are fixedly connected to form a receiving cavity. In actual application, a through hole 531 for installing the rotor shaft 211 is provided on the bottom surface of the lower shell 53. When installing, the rotor shaft 211 needs to pass through the through hole 531 and then connect with the external drive shaft. After the rotor shaft 211 is installed, the end surface height of the rotor shaft 211 does not exceed the bottom surface height of the lower shell 53, which can be used as one of the settings to further reduce the axial size of the power generation system structure. The axial center of the upper shell 54 is provided with a hollow boss 541 for fixed connection with the mechanical pump 30. Among them, a plurality of fixing holes are provided on the hollow boss 541, and the above-mentioned fixing holes correspond to the plurality of fixing holes provided on the mechanical pump 30 one by one. In the fixed connection mode, the mechanical pump 30 can be fixed on the hollow boss 541 by bolts. The hollow boss 541 is fixedly provided on the upper shell 54, and the mechanical pump 30 is installed through the hollow boss 541, which can increase the reliability of the installation of the mechanical pump 30 on the shell and enhance the structural strength of the connection between the two. After the mechanical pump 30 is installed, part of the structure of the hollow boss 541 is embedded in the second cavity 212, and the other part of its structure is an integrated structure with the upper shell 54, or penetrates the upper shell 54 and is fixedly connected with the upper shell 54. While ensuring the reliable installation of the mechanical pump 30 in the upper shell 54, the axial dimension occupied by the hollow boss 541 can be further reduced because part of the axial dimension of the hollow boss 541 overlaps with the upper shell 54. In this embodiment, if the oil pool 51 and the oil guide groove 52 are disposed on the lower shell 53 or the upper shell 54, during production line processing, the shell portion with the oil pool 51 and the oil guide groove 52 is difficult to perform die stamping and other operations, and the accommodation space of the oil pool 51 is difficult to expand due to structural limitations. Figure 3 - Figure 4 As shown, the oil pool 51 is arranged on the lower shell 53, and the oil guide groove 52 is arranged on the upper shell 54. This arrangement can reduce the processing difficulty of the lower shell 53 and the upper shell 54, and at the same time, a larger accommodating space is provided for the oil pool 51 as much as possible, thereby optimizing the cooling structure of the power generation device.

[0043] Cooling process: Under the action of the mechanical pump 30, the cooling oil starts from the oil pool 51, flows through the oil guide groove 52, passes through the mechanical pump 30 and is sprinkled to the rotor body 21, and then flows back to the oil pool 51 from the oil holes set on the stator body 11, the lower shell 53 and the upper shell 54. Figure 3 - Figure 4 As shown, the arrow direction is the reference flow direction of the cooling oil.

[0044] In some optional embodiments, such as Figure 1 As shown, the present embodiment provides a power generation device, further including a resolver terminal 40, which is arranged on the stator body 11, and the resolver terminal 40 is used to connect the resolver assembly, and the position and rotation speed of the rotor body 21 can be detected in real time through the connected resolver assembly; in addition, the present embodiment provides a power generation device, further including a high-voltage cover plate 70, the number of high-voltage cover plates 70 is set as needed, and the high-voltage cover plate 70 is arranged on the lower shell 53 and / or the upper shell 54.

[0045] This embodiment also provides a new energy vehicle, including the power generation device described above, which can solve the same technical problems as mentioned above and achieve the same technical effects as mentioned above.

[0046] In summary, the power generation device and new energy vehicle provided by the utility model can effectively reduce the radial and axial dimensions of the power generation system structure, and can also greatly simplify the structure of the power generation system.

[0047] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0048] It should be noted that, in this application, 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 any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or 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 device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0049] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A power generation device, characterized in that: include: A rotor assembly (20); the rotor assembly (20) comprises a rotor body (21), and a rotor shaft (211) is provided on the rotor body (21); A mechanical pump (30); the mechanical pump (30) is arranged inside the rotor body (21), and the mechanical pump (30) includes a pump shaft (31), and the pump shaft (31) is fixedly connected to one end of the rotor shaft (211); The housing (50) comprises a lower housing (53) and an upper housing (54); A hollow boss (541) for fixedly connecting to the mechanical pump (30) is provided at the axial center of the upper shell (54).

2. The power generation device according to claim 1, characterized in that: A first cavity (2111) is provided at the axial center of the rotor shaft (211), and the pump shaft (31) is installed in the first cavity (2111).

3. The power generation device according to claim 2, characterized in that: A second cavity (212) is provided on the rotor body (21), the mechanical pump (30) is arranged inside the second cavity (212), and the hollow boss (541) is partially embedded in the second cavity (212).

4. The power generation device according to claim 3, characterized in that: The axial length of the mechanical pump (30) is no greater than the depth of the second cavity (212).

5. The power generation device according to claim 4, characterized in that: The second cavity (212) is communicated with the first cavity (2111).

6. The power generation device according to claim 5, characterized in that: Only a mechanical pump (30) is disposed in the second cavity (212).

7. The power generation device according to claim 1, characterized in that: The other end of the rotor shaft (211) is connected to an external driving shaft.

8. The power generation device according to claim 1, characterized in that: Also includes: The stator assembly (10) comprises a stator body (11); the rotor assembly (20) is arranged inside the stator body (11).

9. The power generation device according to claim 1, characterized in that: An oil pool (51) and an oil guide groove (52) are provided on the housing (50); the oil pool (51), the oil guide groove (52) and the mechanical pump (30) are connected in sequence to form an oil supply circuit.

10. The power generation device according to claim 9, characterized in that: The oil pool (51) is arranged on the lower shell (53), and the oil guide groove (52) is arranged on the upper shell (54).

11. The power generation device according to claim 1, characterized in that: A through hole (531) for installing the rotor shaft (211) is provided on the bottom surface of the lower shell (53).

12. The power generation device according to claim 1, characterized in that: Also includes: Heat exchanger (60); The heat exchanger (60) is arranged outside the housing (50).

13. A new energy vehicle, characterized in that: It comprises a power generation device as described in any one of claims 1 to 12.

Images