Range extender assembly and vehicle

Abstract

The utility model provides a range extender assembly and a vehicle, and relates to the technical field of vehicles, the range extender assembly comprises a motor housing, a cover body, a controller and a motor; a first mounting cavity is formed in the motor shell, the motor is arranged in the first mounting cavity, and one end wall, in the axial direction of the motor shell, of the motor shell is configured to be a common end wall; the cover body is located on the side, deviating from the first installation cavity in the axial direction of the motor shell, of the common end wall, the cover body and the common end wall jointly define a second installation cavity, the second installation cavity and the first installation cavity are sequentially distributed in the axial direction of the motor shell, and the controller is arranged in the second installation cavity. According to the range extender assembly, the material cost of the range extender assembly can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and more specifically, to a range extender assembly and a vehicle. Background Technology

[0002] The range extender assembly is a key component in a vehicle, typically consisting of an engine, generator, and controller. It generates electricity by burning conventional fuel to drive the generator, which then charges the vehicle's battery or directly powers the electric motor, thereby extending the vehicle's driving range.

[0003] However, in the range extender assemblies of related technologies, the generator housing and the controller housing are usually designed separately, which results in a large size of the entire range extender assembly, leading to excessively high material costs. Utility Model Content

[0004] The problem this invention addresses is: how to reduce the material cost of the range extender assembly.

[0005] To solve the above problems, this utility model provides a range extender assembly and a vehicle.

[0006] In a first aspect, this utility model provides a range extender assembly, including a motor housing, a cover, a controller, and a motor; the motor housing has a first mounting cavity, the motor is disposed in the first mounting cavity, and one end wall of the motor housing along its axial direction is configured as a common end wall; the cover is located on the side of the common end wall away from the first mounting cavity along the axial direction of the motor housing, the cover and the common end wall together form a second mounting cavity, and the second mounting cavity and the first mounting cavity are sequentially distributed along the axial direction of the motor housing, and the controller is disposed in the second mounting cavity.

[0007] Optionally, the cover body is provided with a mounting groove with its opening facing the common end wall, and the common end wall covers the opening of the mounting groove to form the second mounting cavity.

[0008] Optionally, the second mounting cavity is provided with a first inner water channel, and the first mounting cavity is provided with a second inner water channel. The first inner water channel and the second inner water channel are connected to form a single water channel structure.

[0009] Optionally, the outer side of the cover is provided with a first outer water channel and a second outer water channel, the end of the first outer water channel passes through the cover and communicates with one end of the first inner water channel, and one end of the second outer water channel passes through the cover and communicates with the other end of the first inner water channel; the outer side of the motor housing is provided with a third outer water channel, one end of the third outer water channel communicates with the other end of the second outer water channel, and the other end of the third outer water channel passes through the motor housing and communicates with the second inner water channel.

[0010] Optionally, the controller includes a bracket and a water-cooled plate, the bracket is connected to the cover, the water-cooled plate is disposed on the bracket, and the first inner water channel includes a flow channel disposed within the water-cooled plate.

[0011] Optionally, a water jacket is provided in the first mounting cavity, and a second inner water channel is formed between the peripheral wall of the water jacket and the inner wall of the motor housing.

[0012] Optionally, the outer surface of the cover is provided with a first protrusion, and the first external water channel is formed within the first protrusion; and / or,

[0013] The outer surface of the cover is provided with a second protruding strip, and the second external water channel is formed within the second protruding strip; and / or,

[0014] The outer wall of the motor housing is provided with a third protrusion, and the third external water channel is formed within the third protrusion.

[0015] Optionally, the controller includes a bracket, a water-cooled plate, a bus capacitor, a power module, and a drive unit. The bracket is connected to the cover, the water-cooled plate is disposed on the bracket, and the bus capacitor, the power module, and the drive unit are all mounted on the water-cooled plate.

[0016] Optionally, the motor includes a rotor hub coaxially disposed with respect to the motor housing; the range extender assembly further includes a crankshaft, one end of which is connected to the end of the rotor hub away from the common end wall, and the other end of which passes through the motor housing and extends outside the motor housing.

[0017] Secondly, this utility model provides a vehicle including the range extender assembly described above.

[0018] The beneficial effects of the range extender assembly of this utility model are as follows: The cover is located on the side of the common end wall away from the first mounting cavity along the axial direction of the motor housing. The cover and the common end wall together form a second mounting cavity for the controller to be installed. In other words, the controller is surrounded by the common end wall and the cover. The common end wall constitutes part of the controller housing, and the common end wall itself is an end wall of the motor housing along its axial direction. That is to say, the common end wall is part of the motor housing. The motor housing and the controller housing share the common end wall, realizing a shared housing design for the motor and controller. This can improve the integration of the range extender assembly, making it smaller and thus reducing the material cost of the range extender assembly. In addition, the second mounting cavity and the first mounting cavity are distributed sequentially along the axial direction of the motor housing. This means that the controller housing is located on the axial direction of the motor housing. Compared with installing the controller housing on the radial direction of the motor housing, the radial dimension of the entire range extender assembly can be relatively reduced, which is beneficial for installation and use in installation environments with limited radial space. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the range extender assembly according to an embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of the range extender assembly according to an embodiment of the present utility model;

[0021] Figure 3 This is a side view of the range extender assembly according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the cooling water channel of the range extender assembly according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the rotor hub in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Motor housing; 11. Common end wall; 12. Third protrusion; 13. Water outlet; 14. First mounting cavity; 2. Cover; 21. Second mounting cavity; 22. Mounting groove; 23. First protrusion; 231. Water inlet; 24. Second protrusion; 3. Cooling water channel; 31. First outer water channel; 32. Second outer water channel; 33. Third outer water channel; 34. Second inner water channel; 4. Controller; 41. Inverter brick; 42. Filter; 5. Water jacket; 51. Annular groove; 52. Sealing ring; 6. Motor; 61. Rotor assembly; 611. Rotor hub; 6111. Flange; 6112. Connecting hole; 612. Motor rotor; 62. Motor stator; 7. Eddy current sensor. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0027] In the attached diagram, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing up and the negative direction representing down. The X-axis represents the horizontal direction and is designated as the front and back position, with the positive direction of the X-axis representing the front and the negative direction representing the back. The Y-axis represents the left and right position, with the positive direction of the Y-axis representing the left and the negative direction representing the right. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0029] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0030] This utility model provides a range extender assembly and a vehicle to reduce the material cost of the range extender assembly. A detailed description is provided below with reference to specific embodiments.

[0031] like Figure 1 and Figure 2 As shown in the figure, an embodiment of the present invention provides a range extender assembly, including a motor housing 1, a cover 2, a controller 4, and a motor 6; the motor housing 1 has a first mounting cavity 14, the motor 6 is disposed in the first mounting cavity 14, and one end wall of the motor housing 1 along its axial direction is configured as a common end wall 11; the cover 2 is located on the side of the common end wall 11 away from the first mounting cavity 14 along the axial direction of the motor housing 1, the cover 2 and the common end wall 11 together form a second mounting cavity 21, and the second mounting cavity 21 and the first mounting cavity 14 are sequentially distributed along the axial direction of the motor housing 1, and the controller 4 is disposed in the second mounting cavity 21.

[0032] It should be noted that the peripheral sidewalls of the motor housing 1 are cylindrical, and the axial direction of the motor housing 1 is the axial direction of this cylindrical structure, i.e. Figure 1 The X-axis direction is shown. It should also be noted that the cover 2 can be connected to the common end wall 11 in a detachable manner, such as by bolts, and there are no restrictions here.

[0033] In this embodiment, the cover 2 is located on the side of the common end wall 11 that is axially away from the first mounting cavity 14 along the motor housing 1. The cover 2 and the common end wall 11 together form the second mounting cavity 21 for mounting the controller 4. That is, the controller 4 is surrounded by the common end wall 11 and the cover 2. The common end wall 11 is part of the controller 4 housing, and the common end wall 11 itself is an end wall of the motor housing 1 along its axial direction. In other words, the common end wall 11 is part of the motor housing 6. That is, the housing of the motor 6 and the housing of the controller 4 share the common end wall 11, realizing the design of the motor and controller sharing a housing. This can improve the integration of the range extender assembly, making it smaller and thus reducing the material cost of the range extender assembly. In addition, the second mounting cavity 21 and the first mounting cavity 14 are distributed sequentially along the axial direction of the motor housing 1. This means that the housing of the controller 4 is located in the axial direction of the motor housing 1. Compared with mounting the housing of the controller 4 in the radial direction of the motor housing 1 (refer to...), this is a more efficient design. Figure 2 In the Z-axis direction (as shown), the radial dimension of the entire range extender assembly can be relatively reduced, which is beneficial for installation and use in environments with limited radial space.

[0034] Optionally, such as Figure 2 As shown, the cover 2 is provided with an installation groove 22 with the opening facing the common end wall 11, and the common end wall 11 covers the opening of the installation groove 22 to form the second installation cavity 21.

[0035] Specifically, the depth of the mounting groove 22 can be the same as the maximum thickness of the controller 4, so that the controller 4 can be completely accommodated inside the mounting groove 22. The installation process of the controller 4 can be roughly as follows: install the controller 4 in the mounting groove 22, and then install the cover 2 together with the controller 4 to the outside of the common end wall 11. After completing the bolt connection between the cover 2 and the common end wall 11, the controller 4 can be surrounded between the cover 2 and the common end wall 11. In addition, in some other embodiments, a mounting groove can also be provided on the outer surface of the common end wall 11, and the mounting groove can be sealed by the cover 2 to form a closed second mounting cavity. This is not a limitation.

[0036] In this optional embodiment, the cover 2 is provided with a mounting groove 22 that opens toward the common end wall 11. The mounting groove 22 is covered by the common end wall 11 to form a second mounting cavity 21. That is, the controller 4 can be located inside the mounting groove 22. Therefore, after the controller 4 is installed into the mounting groove 22, the controller 4 will not protrude excessively from the opening of the mounting groove 22. This makes it less likely for the controller 4 to be bumped or knocked during the process of taking the cover 2 together with the controller 4 to the common end wall 11 for installation, thus better protecting the controller 4.

[0037] In related technologies, range extender assemblies typically have a cooling water channel and a cooling oil channel. The cooling water channel dissipates heat from the controller, while the cooling oil channel dissipates heat from the motor. This results in the need for two cooling media, cooling water and cooling oil. Furthermore, the cooling water channel and the cooling oil channel must be independent of each other, which increases the complexity of the cooling system of the range extender assembly.

[0038] In view of this, alternatively, such as Figure 2 and Figure 4 As shown, the second mounting cavity 21 is provided with a first inner water channel, and the first mounting cavity 14 is provided with a second inner water channel 34. The first inner water channel and the second inner water channel 34 are connected to form a single water channel structure.

[0039] Understandably, when the cooling water flows through the second mounting cavity 21 along the single-channel structure, it can dissipate heat from the controller 4; when the cooling water flows through the first mounting cavity 14 along the single-channel structure, it can dissipate heat from the motor 6. Furthermore, both ends of the single-channel structure can be connected to the vehicle's cooling pipes to obtain cooling water from the cooling pipes.

[0040] In this optional embodiment, by connecting the first inner water channel in the second mounting cavity 21 with the second inner water channel 34 in the first mounting cavity 14 to form a single water channel structure, the cooling water can dissipate heat on the controller 4 and the motor 6 separately when flowing along the single water channel structure. There is no need to set up separate cooling water channels for cooling the controller and cooling oil channels for cooling the motor at the same time. This can reduce the complexity of the cooling system of the range extender assembly and reduce manufacturing costs. In addition, only a single type of cooling medium is needed to complete the synchronous cooling of the controller and the motor, and the inspection and replacement of the cooling medium is simpler.

[0041] Optionally, such as Figure 2 , Figure 3 and Figure 4As shown, the outer side of the cover 2 is provided with a first outer water channel 31 and a second outer water channel 32. The end of the first outer water channel 31 passes through the cover 2 and is connected to one end of the first inner water channel. One end of the second outer water channel 32 passes through the cover 2 and is connected to the other end of the first inner water channel. The outer side of the motor housing 1 is provided with a third outer water channel 33. One end of the third outer water channel 33 is connected to the other end of the second outer water channel 32. The other end of the third outer water channel 33 passes through the motor housing 1 and is connected to the second inner water channel 34.

[0042] Specifically, the first outer water channel 31, the first inner water channel, the second outer water channel 32, the third outer water channel 33, and the second inner water channel 34 can be connected sequentially to form a cooling water channel 3. When the cooling water flows along the cooling water channel 3 to the first inner water channel, it dissipates heat from the controller 4, and when it flows to the second inner water channel 34, it dissipates heat from the motor 6. In addition, a water inlet 231 can be provided at the end of the first outer water channel 31 away from the first inner water channel, and a water outlet 13 can be provided on the motor housing 1 to communicate with the second inner water channel 34.

[0043] In this optional embodiment, the first outer water channel 31, the first inner water channel, the second outer water channel 32, the third outer water channel 33, and the second inner water channel 34 are sequentially connected to form a complete water channel structure, so that the cooling water can sequentially cool the controller 4 and the motor 6 when flowing along the water channel structure. Furthermore, for all water channels, only the first inner water channel and the second inner water channel 34 are located inside the range extender assembly, while the remaining first outer water channel 31, second outer water channel 32, and third outer water channel 33 are all located outside the range extender assembly, which can reduce... Minimizes the occupancy of the range extender assembly's internal installation space, ensuring sufficient internal space. Furthermore, the second outer water channel 32 and the third outer water channel 33 connect the first inner water channel and the second inner water channel 34. The second outer water channel 32 is located outside the cover 2, and the third outer water channel 33 is located outside the motor housing 1. In this way, the second outer water channel 32 can avoid the controller 4 in the second mounting cavity 21, and the third outer water channel 33 can avoid the motor 6 in the first mounting cavity 14, making it easier to assemble the range extender assembly.

[0044] Optionally, such as Figure 2 As shown, the controller 4 includes a bracket and a water-cooled plate. The bracket is connected to the cover 2, and the water-cooled plate is disposed on the bracket. The first inner water channel includes a flow channel disposed within the water-cooled plate.

[0045] Specifically, the controller 4 may include an inverter brick 41 and a filter 42. The inverter brick 41 consists of a bracket, a water-cooled plate, a bus capacitor, a power module, and a drive unit.

[0046] In this optional embodiment, the first internal water channel includes a flow channel disposed in the water-cooling plate of the controller 4, that is, the first internal water channel is integrated with the controller 4. This can ensure the compactness of the internal structure of the second mounting cavity 21 and improve the heat dissipation efficiency of the controller 4.

[0047] Optionally, such as Figure 2 and Figure 4 As shown, a water jacket 5 is provided in the first mounting cavity 14, and the second inner water channel 34 is formed between the peripheral wall surface of the water jacket 5 and the inner wall surface of the motor housing 1.

[0048] Specifically, the water jacket 5 can be an annular structure surrounding the central axis of the motor housing 1. Its peripheral wall can be provided with an annular groove 51, which is sealed by the inner wall of the motor housing 1 to form a closed second inner water channel 34. The water outlet 13 can be opened at a position radially opposite to the annular groove 51 on the wall of the motor housing 1. Furthermore, a sealing ring 52 can be respectively provided on both sides of the annular groove 51 on the peripheral wall of the water jacket 5 to ensure the sealing between the peripheral wall of the water jacket 5 and the inner wall of the motor housing 1, thereby ensuring that the second inner water channel 34 is sealed and not prone to leakage.

[0049] In this optional embodiment, by providing a water jacket 5 in the first mounting cavity 14, and forming a second inner water channel 34 between the peripheral wall surface of the water jacket 5 and the inner wall surface of the motor housing 1, the second inner water channel 34 can be positioned in the first mounting cavity 14 in a state surrounding the central axis of the motor housing 1, thereby surrounding the periphery of the motor 6 and improving the uniformity of heat dissipation from the circumference of the motor 6.

[0050] Optionally, such as Figure 1 , Figure 3 and Figure 4 As shown, the outer side of the cover 2 is provided with a first protrusion 23, and the first external water channel 31 is formed in the first protrusion 23; and / or, the outer side of the cover 2 is provided with a second protrusion 24, and the second external water channel 32 is formed in the second protrusion 24; and / or, the outer wall of the motor housing 1 is provided with a third protrusion 12, and the third external water channel 33 is formed in the third protrusion 12.

[0051] Specifically, in combination Figure 1 and Figure 2As shown, the inverter brick 41 of the controller 4 can be located in the middle of the second mounting cavity 21. Therefore, in order to ensure that both the first external water channel 31 and the second external water channel 32 are connected to the first internal water channel in the inverter brick 41, the first protrusion 23 can be located on the end face of the cover 2. One end of the first protrusion 23 can be located at the periphery of the end face of the cover 2 to connect with the water inlet 231, and the other end of the first protrusion 23 can extend to the middle of the end face of the cover 2 to connect with the first internal water channel in the inverter brick 41. The second protrusion 24 can be located on both the end face and the side face of the cover 2. One end of the second protrusion 24 can be located at the middle of the end face of the cover 2 to connect with the first internal water channel in the inverter brick 41, and the other end of the second protrusion 24 can pass through the end face and the side face of the cover 2 and extend to the connection position between the cover 2 and the motor housing 1 to connect with the third protrusion 12. Figure 3 As shown, in order to ensure that the second outer water channel 32 and the third outer water channel 33 are connected, the third protrusion 12 can be provided on the peripheral side of the motor housing 1. One end of the third protrusion 12 can be located at the connection position between the cover 2 and the motor housing 1 so as to connect with the second protrusion 24. The other end of the third protrusion 12 can extend to the peripheral side of the motor housing 1 at a position radially opposite to the water jacket 5 so as to connect with the second inner water channel 34.

[0052] In this optional embodiment, the outer side of the cover 2 is provided with a first protrusion 23, and a first outer water channel 31 is formed within the first protrusion 23. This method of forming a water channel with a protrusion can form the first outer water channel without significantly increasing the volume of the cover, ensuring normal flow of cooling water and ensuring that the cover has a small size to reduce material costs. The outer side of the cover 2 is provided with a second protrusion 24, and a second outer water channel 32 is formed within the second protrusion 24. This method of forming a water channel with a protrusion can form the second outer water channel without significantly increasing the volume of the cover, ensuring normal flow of cooling water and ensuring that the cover has a small size to reduce material costs. The outer wall of the motor housing 1 is provided with a third protrusion 12, and a third outer water channel 33 is formed within the third protrusion 12. This method of forming a water channel with a protrusion can form the third outer water channel without significantly increasing the volume of the motor housing, ensuring normal flow of cooling water and ensuring that the motor housing has a small size to reduce material costs.

[0053] Optionally, such as Figure 2 As shown, the controller 4 includes a bracket, a water-cooled plate, a bus capacitor, a power module, and a drive unit. The bracket is connected to the cover 2, the water-cooled plate is disposed on the bracket, and the bus capacitor, the power module, and the drive unit are all mounted on the water-cooled plate.

[0054] The inverter brick 41 of the controller 4 consists of the bracket, water-cooled plate, bus capacitor, power module and drive unit.

[0055] In this optional embodiment, by placing the water-cooled plate on the bracket and mounting the bus capacitor, power module, and drive unit on the water-cooled plate, an integrated design of the bracket, water-cooled plate, bus capacitor, power module, and drive unit can be achieved, thereby optimizing the size of the entire controller and improving the compactness of the range extender assembly.

[0056] Optionally, such as Figure 2 As shown, the motor 6 includes a rotor hub 611 coaxially disposed with the motor housing 1; the range extender assembly also includes a crankshaft, one end of which is connected to the end of the rotor hub 611 away from the common end wall 11, and the other end of which passes through the motor housing 1 and extends outside the motor housing 1.

[0057] Specifically, such as Figure 5 As shown, the end of the rotor hub 611 away from the common end wall 11 may be provided with a flange 6111. The flange 6111 may have a connecting hole 6112. The connecting hole 6112 can be connected to the connecting hole on the crankshaft flange by bolts, thereby connecting the crankshaft and the rotor hub 611. Additionally, as... Figure 2 As shown, the range extender assembly may further include a motor rotor 612 and a motor stator 62. The motor rotor 612 is fitted onto the rotor hub 611 to form a rotor assembly 61. The motor stator 62 is embedded and connected to the water jacket 5, providing a fixed magnetic field to drive the rotor assembly 61 to rotate. Furthermore, as... Figure 2 As shown, the range extender assembly may also include an eddy current sensor 7, which is disposed on the side of the common end wall 11 near the rotor hub 611 and can be used to perform non-contact measurements on the rotor assembly 61 to detect the operating parameters of the rotor assembly 61.

[0058] In this optional embodiment, one end of the crankshaft is connected to the end of the rotor hub 611 away from the common end wall 11. This allows the rotor hub 611 to be directly connected to the crankshaft, eliminating the need for a dual-mass flywheel and torsional damper between them, which helps to reduce the cost of the range extender assembly.

[0059] This utility model provides a vehicle including the range extender assembly described above.

[0060] In this embodiment, since the vehicle includes the range extender assembly described above, it possesses all the beneficial effects of all embodiments of the range extender assembly described above, which will not be repeated here.

[0061] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. An augmenter assembly, comprising: The motor shell (1) is provided with a first installation cavity (14), the motor (6) is arranged in the first installation cavity (14), and the end wall of the motor shell (1) in the axial direction is configured as a common end wall (11).

2. The range extender assembly of claim 1, wherein, The cover body (2) is located on the side of the common end wall (11) away from the first installation cavity (14) in the axial direction of the motor shell (1), the cover body (2) and the common end wall (11) jointly enclose a second installation cavity (21), and the second installation cavity (21) and the first installation cavity (14) are sequentially distributed in the axial direction of the motor shell (1), and the controller (4) is arranged in the second installation cavity (21).

3. The range extender assembly of claim 1, wherein, The cover body (2) is provided with a mounting groove (22) with a slot opening facing the common end wall (11), and the common end wall (11) covers the slot opening of the mounting groove (22) to form the second installation cavity (21).

4. The range extender assembly of claim 3, wherein, The second installation cavity (21) is provided with a first inner water channel, and the first installation cavity (14) is provided with a second inner water channel (34), the first inner water channel and the second inner water channel (34) are communicated to form a single water channel structure.

5. The range extender assembly of claim 4, wherein, The outer side of the cover body (2) is provided with a first outer water channel (31) and a second outer water channel (32), one end of the first outer water channel (31) penetrates through the cover body (2) and is communicated with one end of the first inner water channel, one end of the second outer water channel (32) penetrates through the cover body (2) and is communicated with the other end of the first inner water channel; the outer side of the motor shell (1) is provided with a third outer water channel (33), one end of the third outer water channel (33) is communicated with the other end of the second outer water channel (32), and the other end of the third outer water channel (33) penetrates through the motor shell (1) and is communicated with the second inner water channel (34).

6. The range extender assembly of claim 4, wherein, The controller (4) comprises a bracket and a water-cooled plate, the bracket is connected with the cover body (2), the water-cooled plate is arranged in the bracket, and the first inner water channel comprises a flow channel arranged in the water-cooled plate.

7. The range extender assembly of claim 4, wherein, The first installation cavity (14) is provided with a water jacket (5), and the peripheral wall surface of the water jacket (5) and the inner wall surface of the motor shell (1) form the second inner water channel (34). The outer side of the cover body (2) is provided with a first convex strip (23), and the first outer water channel (31) is formed in the first convex strip (23); and / or, The outer side of the cover body (2) is provided with a second convex strip (24), and the second outer water channel (32) is formed in the second convex strip (24); and / or, 8. The range extender assembly of claim 1, wherein, The outer wall surface of the motor shell (1) is provided with a third convex strip (12), and the third outer water channel (33) is formed in the third convex strip (12). The controller (4) comprises a bracket, a water-cooled plate, a bus capacitor, a power module and a driving unit, the bracket is connected with the cover body (2), the water-cooled plate is arranged in the bracket, and the bus capacitor, the power module and the driving unit are all installed in the water-cooled plate.

9. The range extender assembly of claim 1, wherein, The motor (6) comprises a rotor hub (611) coaxially arranged with the motor housing (1); the range extender assembly further comprises a crankshaft, one end of the crankshaft is connected with one end of the rotor hub (611) away from the common end wall (11), and the other end of the crankshaft penetrates through the motor housing (1) and extends to outside of the motor housing (1).

10. A vehicle characterized by comprising: The range extender assembly as claimed in any one of claims 1-9. The range extender assembly as claimed in any one of claims 1-9.

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