Range-extending power generator, range extender with range-extending power generator and vehicle with range-extending power generator

Abstract

The utility model discloses a range-extended generator, a range extender with the same and a vehicle, the range-extended generator comprises a shell, the shell comprises a shell main body and a mounting seat, the mounting seat extends along a first direction, one end of the mounting seat is connected with the shell main body, the mounting seat is provided with a shaft hole, and the shaft hole extends along the first direction; the first bearing and the second bearing are arranged in the shaft hole and are arranged at an interval in the first direction; the rotor assembly comprises a rotating shaft, the rotating shaft extends in the first direction, one end of the rotating shaft extends into the shaft hole, and the rotating shaft is rotatably arranged on the mounting base through a first bearing and a second bearing. According to the range-extended generator, the rotor assembly can be supported more stably and reliably, so that the running stability and reliability of the range-extended generator are better, the number of parts in the shell can be prevented from being increased, and the overall structure of the range-extended generator is more compact.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is related to a kind of range extending generator and range extender and vehicle with it of the range extending generator. BACKGROUND

[0002] In order to realize energy saving and emission reduction, reduce air pollution, people advocate green travel, electric vehicle has become one of the popular choices for people's daily travel, and with the continuous improvement of electric vehicle technology, people's demand for electric vehicle's range is getting higher and higher, therefore, in order to improve the range, the range extender is provided in the electric vehicle, the range extending engine in the range extender cooperates with the range extending generator, the range extending engine drives the generator to generate electricity, and the electric energy is transmitted to the power battery for storage or directly transmitted to the driving motor to drive the operation of the whole vehicle, so as to improve the range of the vehicle.

[0003] In the related art, the bearing of the range extending generator is easy to move, and the bearing is easy to be damaged when the range extending generator is running, so that the stability and reliability of the range extending generator are poor when running. UTILITY MODEL CONTENTS

[0004] The utility model is based on the discovery of the inventor of the utility model of the present application to the following facts and problems:

[0005] In the related art, the rotating shaft in the range extending generator is supported by single bearing, and the single bearing is in floating state in axial direction, so that the bearing is easy to move in axial direction, which leads to the damage of the bearing when the range extending generator runs at high speed, and the stability and reliability of the range extending generator are poor when running.

[0006] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a range extending generator, which can well reduce the axial movement of the bearing and make the range extending generator run more stably and reliably.

[0007] The utility model further provides a range extender with the above range extending generator.

[0008] The utility model further provides a vehicle with the above range extender.

[0009] A range extender generator according to a first aspect of the present invention includes: a housing, the housing comprising: a housing body and a mounting base, the mounting base extending along a first direction and having one end connected to the housing body, the mounting base having a shaft hole extending along the first direction; a first bearing and a second bearing, the first bearing and the second bearing being disposed within the shaft hole and arranged at a distance from each other in the first direction; and a rotor assembly, the rotor assembly including a rotating shaft extending along the first direction and having one end extending into the shaft hole, the rotating shaft being rotatably disposed on the mounting base via the first bearing and the second bearing.

[0010] According to the present invention, the range extender generator has a shaft hole extending in a first direction provided on the mounting base of the housing. The first bearing and the second bearing are arranged at intervals in the first direction and are both disposed in the shaft hole. The rotor shaft of the rotor assembly is rotatably disposed on the mounting base through the first bearing and the second bearing, so that the rotor assembly can be supported more stably and reliably. This results in better operational stability and reliability of the range extender generator, and avoids increasing the number of components in the housing, making the overall structure of the range extender generator more compact.

[0011] In some embodiments of this utility model, the first direction is a horizontal direction, and in the first direction, the first bearing and the second bearing are respectively located on both sides of the center of gravity of the rotor assembly.

[0012] In some embodiments of this utility model, the shaft hole includes: a first hole segment and a second hole segment connected in the first direction, the first hole segment and the second hole segment being arranged coaxially, the radial dimension of the first hole segment being greater than the radial dimension of the second hole segment, the first bearing being disposed in the first hole segment, and the second bearing being disposed in the second hole segment.

[0013] In one embodiment of the present invention, the shaft hole further includes a third hole segment, which is connected to and coaxially arranged with the second hole segment. The radial dimension of the third hole segment is smaller than that of the second hole segment. A first step surface is formed between the first hole segment and the second hole segment, and a second step surface is formed between the second hole segment and the third hole segment. In the first direction, the outer ring of the first bearing abuts against the first step surface, and the outer ring of the second bearing abuts against the second step surface.

[0014] In some examples of this utility model, the rotating shaft is provided with a first shoulder and a second shoulder. In the first direction, the first shoulder is provided on the side of the first bearing away from the first step surface and abuts against the inner ring of the first bearing. The second shoulder is provided on the side of the second bearing away from the second step surface and abuts against the inner ring of the second bearing.

[0015] In one embodiment of the present invention, the range extender generator further includes an end plate. In the first direction, the end plate is disposed at the other end of the mounting base, and the end plate is connected to the mounting base and abuts against the outer ring of the first bearing.

[0016] In some examples of this utility model, the end plate is provided with a through hole, the mounting base is provided with a fixing hole, and the end plate and the mounting base are fastened together by fasteners passing through the through hole and the fixing hole.

[0017] In one example of this utility model, the fixing hole is a threaded hole and a blind hole, the opening of the fixing hole faces the end plate, and the fastener is threadedly engaged with the inner wall surface of the fixing hole.

[0018] In one example of this utility model, the fixing hole is a countersunk hole that penetrates the mounting base along the first direction.

[0019] In some embodiments of this utility model, the shaft hole extends through the mounting base along the first direction, and the range extender generator further includes a resolver assembly disposed in the shaft hole for measuring the rotational position and speed of the rotating shaft.

[0020] In some embodiments of this utility model, the rotor assembly further includes a support frame connected to the rotating shaft. The support frame and the rotating shaft cooperate to define a clearance groove facing the opening of the mounting seat, and the other end of the mounting seat is located in the clearance groove.

[0021] In one embodiment of this utility model, the support frame includes: a first segment, one end of which is connected to the rotating shaft, and the other end of which extends radially outward along the rotating shaft, the first segment extending circumferentially along the rotating shaft in an annular shape; a second segment, which extends circumferentially along the mounting base in an annular shape, in the first direction, one end of which is connected to the other end of the first segment, the other end of which extends circumferentially away from the first segment along the rotating shaft, the second segment cooperating with the first segment to define the clearance groove.

[0022] In one embodiment of the present invention, the rotor assembly further includes: a fixing frame, which is connected to the support frame and located on the outer side of the support frame in the radial direction of the rotating shaft, the fixing frame extending in a ring shape along the circumference of the mounting base; a rotor core, which extends in a ring shape along the circumference of the mounting base and is fixed on the outer circumferential surface of the fixing frame; and a dynamic balancing plate, which is disposed on both sides of the rotor core in the first direction.

[0023] In some embodiments of this utility model, the shell body has an annular plate and a side plate. The annular plate extends in a cylindrical shape along a first direction. The side plate is connected to one end of the annular plate in the first direction. The mounting base is connected to the side plate and arranged radially inside the annular plate. The annular plate, the side plate, and the mounting base cooperate to define a receiving cavity. The stator assembly of the range extender generator is disposed in the receiving cavity.

[0024] In one embodiment of the present invention, the stator assembly includes multiple splicing units, which are arranged circumferentially along the mounting base and connected end to end to form a ring, and the stator assembly is fixedly connected to the ring plate.

[0025] In some examples of this utility model, the range extender generator further includes a fixing ring, which extends circumferentially along the mounting base in an annular shape. The fixing ring is disposed within the receiving cavity and connected to the ring plate, and the outer peripheral wall of the stator assembly is interference-fitted with the inner peripheral wall of the fixing ring.

[0026] In some examples of this utility model, the splicing unit includes: an insulating frame; a stator winding wound on the insulating frame; and a stator core, with the insulating frame sleeved on the stator core. In the circumferential direction of the stator assembly, the two ends of the stator core are respectively formed with a locking protrusion and a locking groove. The stator cores of two adjacent splicing units are connected by the locking protrusion and the locking groove.

[0027] In some examples of this utility model, the range extender generator further includes a fixing ring, which extends in a ring shape along the circumference of the mounting base. The fixing ring is disposed in the receiving cavity and connected to the ring plate, and the fixing ring and the ring plate cooperate to define a cooling flow channel.

[0028] In one example of this invention, in the first direction, the cooling channel extends circumferentially spirally along the mounting base.

[0029] In one example of this utility model, a plurality of first flow channel plates are provided on the radially outer side of the fixing ring. The first flow channel plates extend radially toward the ring plate along the fixing ring. The plurality of first flow channel plates are arranged at intervals along the first direction. A plurality of second flow channel plates are provided on the radially inner side of the ring plate. The second flow channel plates extend radially toward the fixing ring. The plurality of second flow channel plates are arranged at intervals along the first direction and are staggered with the plurality of first flow channel plates. The fixing ring, the ring plate, the plurality of first flow channel plates and the plurality of second flow channel plates cooperate to form the cooling channel.

[0030] In one example of this utility model, the fixing ring is provided with sealing elements at both ends in the first direction, the sealing elements are located on both sides of the cooling channel, and the sealing elements are sealed between the fixing ring and the ring plate.

[0031] In some embodiments of this invention, the rotating shaft is configured to be splinedly connected to the output shaft of the range extender engine.

[0032] A range extender according to a second aspect of the present invention includes: a range extender engine and a range extender generator according to a first aspect of the present invention, wherein the rotating shaft of the range extender generator is drively connected to the output shaft of the range extender engine.

[0033] According to the range extender of this utility model, by setting the range extender generator of the first aspect mentioned above, by setting a shaft hole extending in a first direction on the mounting base of the housing, the first bearing and the second bearing are arranged at intervals in the first direction and are both set in the shaft hole, the rotating shaft of the rotor assembly is rotatably set on the mounting base through the first bearing and the second bearing, so that the rotor assembly can be supported more stably and reliably, thereby improving the operating stability and reliability of the range extender generator, and avoiding the increase in the number of components in the housing, making the overall structure of the range extender generator more compact.

[0034] The vehicle according to the third aspect of the present invention includes a range extender according to the second aspect of the present invention.

[0035] According to the present invention, the vehicle, by providing the range extender of the second aspect, has a shaft hole extending in the first direction provided on the mounting base of the housing. The first bearing and the second bearing are arranged at intervals in the first direction and are both disposed in the shaft hole. The rotor assembly shaft is rotatably disposed on the mounting base through the first bearing and the second bearing, so that the rotor assembly can be supported more stably and reliably. This results in better operational stability and reliability of the range extender generator, and avoids increasing the number of components in the housing, making the overall structure of the range extender generator more compact.

[0036] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0037] Figure 1 This is a cross-sectional view of a range extender generator according to an embodiment of the present utility model;

[0038] Figure 2 This is a schematic diagram of a range extender generator according to an embodiment of the present utility model;

[0039] Figure 3 This is a cross-sectional view of the housing, the retaining ring, and the stator assembly assembled according to an embodiment of the present invention;

[0040] Figure 4 This is a cross-sectional view of the rotor assembly assembled with the first bearing, the second bearing, and the resolver assembly according to an embodiment of the present utility model.

[0041] Figure 5 This is a cross-sectional view of a rotor assembly according to an embodiment of the present utility model;

[0042] Figure 6 This is a schematic diagram of a rotor assembly according to an embodiment of the present utility model;

[0043] Figure 7 This is a cross-sectional view of the rotor assembly, the support frame, and the fixing frame according to an embodiment of the present utility model.

[0044] Figure 8 This is a schematic diagram of the rotor assembly's rotating shaft, support frame, and fixing frame according to an embodiment of the present utility model;

[0045] Figure 9 This is a cross-sectional view of the housing and retaining ring assembled according to an embodiment of the present utility model;

[0046] Figure 10 This is a schematic diagram of the housing and the retaining ring assembled according to an embodiment of the present utility model;

[0047] Figure 11 This is a cross-sectional view of the housing according to an embodiment of the present utility model;

[0048] Figure 12 This is a schematic diagram of the housing according to an embodiment of the present utility model;

[0049] Figure 13 This is a half-sectional schematic diagram of the fixing ring and stator assembly according to an embodiment of the present utility model;

[0050] Figure 14 This is a schematic diagram of a half-section of the fixing ring according to an embodiment of the present utility model;

[0051] Figure 15 This is a schematic diagram of a half-section of a stator assembly according to an embodiment of the present utility model;

[0052] Figure 16 This is a schematic diagram of a stator assembly according to an embodiment of the present utility model;

[0053] Figure 17 This is a schematic diagram of the splicing unit in the stator assembly according to an embodiment of the present utility model;

[0054] Figure 18 This is a schematic diagram of a case where the fixing hole is a blind hole according to another embodiment of the present invention;

[0055] Figure 19This is a schematic diagram of the cooling channel according to another embodiment of the present invention.

[0056] Figure label:

[0057] 10. Shell; 101. Receiving cavity; 102. Cooling flow channel;

[0058] 11. Shell body; 111. Ring plate; 1111. Second flow channel plate; 112. Side plate;

[0059] 12. Mounting base; 1201. First step surface; 1202. Second step surface;

[0060] 121, Shaft hole; 1211, First hole section; 1212, Second hole section; 1213, Third hole section;

[0061] 122. Fixing hole;

[0062] 20. Rotor assembly; 201. Clearance slot;

[0063] 21. Shaft; 211. First shoulder; 212. Second shoulder; 213. Snap-fit ​​groove; 214. Spline;

[0064] 22. Support frame; 221. First section; 222. Second section;

[0065] 23. Fixing frame; 24. Rotor core; 25. Dynamic balance plate;

[0066] 31. First bearing; 32. Second bearing;

[0067] 40. Stator assembly;

[0068] 41. Splicing unit;

[0069] 411. Stator core; 4111. Locking protrusion; 4112. Locking slot;

[0070] 412. Insulating frame; 413. Stator winding;

[0071] 50. Fixing ring; 51. Limiting rib; 52. First flow channel plate; 60. End plate; 70. Cover plate;

[0072] 80. Resolver assembly; 81. Resolver transformer; 82. Resolver heat exchanger ring;

[0073] 91. Flexible gasket; 92. Snap-fit ​​component; 93. Seal;

[0074] 100. Range extender generator. Detailed Implementation

[0075] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0076] First, refer to Figures 1-19 A brief description of a vehicle according to a third aspect of the present invention is provided. The vehicle is equipped with a range extender, which includes a range extender engine and a range extender generator 100. The range extender engine can drive the range extender generator 100 to generate electricity.

[0077] The following is for reference. Figures 1-19 A range extender generator 100 according to a first aspect embodiment of the present invention is described.

[0078] like Figures 1-19 As shown, the range extender generator 100 according to the first aspect embodiment of the present invention includes: a housing 10, a first bearing 31, a second bearing 32, and a rotor assembly 20.

[0079] Specifically, the housing 10 includes: a housing body 11 and a mounting base 12, the mounting base 12 being along a first direction (e.g., Figure 1 The rotor assembly 20 extends in the left-right direction and is connected at one end to the housing body 11. The mounting base 12 is provided with a shaft hole 121, which extends in the first direction. The first bearing 31 and the second bearing 32 are disposed in the shaft hole 121 and are arranged at intervals in the first direction. The rotor assembly 20 includes a rotating shaft 21, which extends in the first direction and extends at one end into the shaft hole 121. The rotating shaft 21 is rotatably disposed on the mounting base 12 through the first bearing 31 and the second bearing 32.

[0080] In this embodiment, a first bearing 31 and a second bearing 32 are provided. The rotating shaft 21 of the rotor assembly 20 is rotatably mounted on the mounting base 12 of the housing 10 via the first bearing 31 and the second bearing 32. The first bearing 31 and the second bearing 32 are arranged at intervals in the first direction, which is simple in structure. The cooperation of the first bearing 31 and the second bearing 32 can effectively distribute the load when the rotating shaft 21 rotates, thereby reducing the pressure on a single bearing. This allows the first bearing 31 and the second bearing 32 to provide more stable and reliable support for the rotating shaft 21. The first bearing 31 and the second bearing 32 can form a combination of a fixed end and a floating end, reducing the probability of axial movement and damage of the bearings. This allows the rotating shaft 21 to rotate more stably and reliably, resulting in better stability and reliability of the range extender generator 100 during long-term operation.

[0081] In this embodiment, the mounting base 12 is provided with a shaft hole 121 extending along the first direction. The first bearing 31 and the second bearing 32 are both disposed in the shaft hole 121. The structure is simple, allowing the first bearing 31 and the second bearing 32 to be easily installed on the housing 10 through the shaft hole 121. The first bearing 31 and the second bearing 32 can be installed on the housing body 11 through the mounting base 12, thereby reducing the number of components in the housing 10. For example, when the housing body 11 is the rear end cover of the housing 10, the housing 10 does not need to be provided with a front end cover for the installation of the first bearing 31 or the second bearing 32, thereby making the overall volume of the range extender generator 100 smaller and the overall structure more compact.

[0082] In this embodiment, the shaft hole 121 extends along the first direction, which allows the mounting base 12 to have a longer extension range in the first direction. This facilitates the spaced arrangement of the first bearing 31 and the second bearing 32 in the first direction, allowing the first bearing 31 and the second bearing 32 to be conveniently arranged at the required position on the rotating shaft 21. This enables the first bearing 31 and the second bearing 32 to provide good support for the rotating shaft 21 in the first direction.

[0083] According to the embodiment of the present utility model, the range extender generator 100 has a shaft hole 121 extending in a first direction provided on the mounting base 12 of the housing 10. The first bearing 31 and the second bearing 32 are arranged at intervals in the first direction and are both disposed in the shaft hole 121. The rotating shaft 21 of the rotor assembly 20 is rotatably disposed on the mounting base 12 through the first bearing 31 and the second bearing 32, so that the rotor assembly 20 can be supported more stably and reliably. This results in better operational stability and reliability of the range extender generator 100, and avoids increasing the number of components in the housing 10, keeping the range extender generator 100 smaller in size and weight, and making the overall structure of the range extender generator 100 more compact.

[0084] In some embodiments of this utility model, reference is made to Figure 1 As shown, the first direction is horizontal. In the first direction, the first bearing 31 and the second bearing 32 can be located on both sides of the center of gravity of the rotor assembly 20.

[0085] In this embodiment, the first direction is horizontal. The first bearing 31 and the second bearing 32 are located on both sides of the center of gravity of the rotor assembly 20, which can make the weight of the rotor assembly 20 more evenly distributed to the support positions of the two bearings and the shaft 21, thereby making the rotor assembly 20 more stable when rotating and making the range extender generator 100 more stable in operation.

[0086] In some embodiments of this utility model, reference is made to Figure 1 and Figure 3As shown, the shaft hole 121 may include: a first hole segment 1211 and a second hole segment 1212 connected in a first direction. The first hole segment 1211 and the second hole segment 1212 are arranged coaxially. The radial dimension of the first hole segment 1211 is greater than the radial dimension of the second hole segment 1212. A first bearing 31 is disposed in the first hole segment 1211 and a second bearing 32 is disposed in the second hole segment 1212.

[0087] In this embodiment, the shaft hole 121 includes a first hole segment 1211 and a second hole segment 1212. The first hole segment 1211 and the second hole segment 1212 are arranged coaxially, which is simple in structure and can meet the assembly requirements of the rotating shaft 21, and facilitate the arrangement of the first bearing 31 and the second bearing 32 in the shaft hole 121.

[0088] In this embodiment, the radial dimension of the first hole segment 1211 is larger than the radial dimension of the second hole segment 1212. The first bearing 31 is disposed within the first hole segment 1211, and the second bearing 32 is disposed within the second hole segment 1212. The structure is simple and facilitates the installation and fixation of the first bearing 31 and the second bearing 32 within the shaft hole 121. Since the radial dimension of the first hole segment 1211 is larger than that of the second hole segment 1212, the size of the first bearing 31 disposed within the first hole segment 1211 can be larger than that of the first bearing 31 disposed within the second hole segment 1212. This provides a certain degree of error prevention, ensuring that the first bearing 31 and the second bearing 32 can be stably installed within the first hole segment 1211 and the second bearing 32, respectively. This makes the assembly of the range extender generator 100 more convenient and easier.

[0089] In one embodiment of this utility model, reference is made to Figure 1 and Figure 3 As shown, the shaft hole 121 may also include a third hole segment 1213, which is connected to and coaxially arranged with the second hole segment 1212. The radial dimension of the third hole segment 1213 is smaller than that of the second hole segment 1212. A first step surface 1201 is formed between the first hole segment 1211 and the second hole segment 1212, and a second step surface 1202 is formed between the second hole segment 1212 and the third hole segment 1213. In the first direction, the outer ring of the first bearing 31 abuts against the first step surface 1201, and the outer ring of the second bearing 32 abuts against the second step surface 1202.

[0090] In this embodiment, a first stepped surface 1201 is formed between the first hole segment 1211 and the second hole segment 1212, and a second stepped surface 1202 is formed between the second hole segment 1212 and the third hole segment 1213. The outer ring of the first bearing 31 abuts against the first stepped surface 1201, and the outer ring of the second bearing 32 abuts against the second stepped surface 1202. This allows the first bearing 31 and the second bearing 32 to be stably and conveniently installed in the first direction. The first stepped surface 1201 and the second stepped surface 1202 can respectively play a good limiting role for the first bearing 31 and the second bearing 32 in the first direction, thereby reducing the axial movement of the bearings and allowing the first bearing 31 and the second bearing 32 to support the rotating shaft 21 more stably.

[0091] In some examples of this utility model, references Figure 3 , Figure 4 , Figure 5 and Figure 9 As shown, the rotating shaft 21 may be provided with a first shoulder 211 and a second shoulder 212. In the first direction, the first shoulder 211 is provided on the side of the first bearing 31 away from the first step surface 1201 and abuts against the inner ring of the first bearing 31. The second shoulder 212 is provided on the side of the second bearing 32 away from the second step surface 1202 and abuts against the inner ring of the second bearing 32.

[0092] In this embodiment, the rotating shaft 21 is provided with a first shoulder 211 and a second shoulder 212. The first shoulder 211 is located on the side of the first bearing 31 away from the first stepped surface 1201 and abuts against the inner ring of the first bearing 31, so that the first bearing 31 can be arranged between the first shoulder 211 and the first stepped surface 1201, thereby providing good axial restraint on both sides of the first bearing 31 in the first direction, thereby further reducing the axial movement of the first bearing 31. The second shoulder 212 is located on the side of the second bearing 32 away from the second stepped surface 1202 and abuts against the inner ring of the second bearing 32, so that... The second bearing 32 can be arranged between the second shoulder 212 and the second step surface 1202, so that the second bearing 32 can be well axially limited on both sides in the first direction, thereby further reducing the axial movement of the second bearing 32. This allows the first bearing 31 and the second bearing 32 to support the rotating shaft 21 more stably and reliably, making the rotor assembly 20 operate more stably and reliably. Furthermore, when assembling the rotating shaft 21 with the mounting base 12, the first bearing 31 and the second bearing 32 can be easily installed into place with the shaft hole 121 and the rotating shaft 21, making the assembly of the range extender generator 100 more convenient and easier.

[0093] In one embodiment of this utility model, such as Figure 1 and Figure 4As shown, the range extender generator 100 may also include an end plate 60. In the first direction, the end plate 60 is disposed at the other end of the mounting base 12. The end plate 60 is connected to the mounting base 12 and abuts against the outer ring of the first bearing 31.

[0094] In this embodiment, the range extender generator 100 also includes an end plate 60, which is connected to the mounting base 12 and abuts against the outer ring of the first bearing 31. This allows the outer ring of the first bearing 31 to be stably and reliably installed and fixed in the first hole section 1211 on both sides in the first direction through the end plate 60 and the first stepped surface 1201. This effectively prevents the first bearing 31 from moving axially along the shaft 21 and dislodging from the shaft hole 121. As a result, the shaft 21 can be stably installed on the mounting base 12 through the first bearing 31, allowing the rotor assembly 20 to operate stably and reliably, thereby making the range extender generator 100 operate more stably.

[0095] In some examples of this utility model, such as Figure 4 and Figure 5 As shown, the rotating shaft 21 may be provided with a snap-fit ​​groove 213, and the snap-fit ​​groove 213 is provided with a snap-fit ​​member 92. The snap-fit ​​member 92 abuts against the inner ring of the first bearing 31. The snap-fit ​​member 92 and the first shaft shoulder 211 are respectively provided on both sides of the first bearing 31 in the first direction.

[0096] In this embodiment, the rotating shaft 21 is provided with a snap-fit ​​groove 213, and the snap-fit ​​groove 213 is provided with a snap-fit ​​member 92. The snap-fit ​​member 92 and the first shaft shoulder 211 are respectively provided on both sides of the first bearing 31. The snap-fit ​​member 92 abuts against the inner ring of the first bearing 31, so that the inner ring of the first bearing 31 is stably and reliably installed and fixed to the rotating shaft 21 in the first direction through the snap-fit ​​member 92 and the first shaft shoulder 211. This effectively avoids the first bearing 31 from moving along the axial direction of the rotating shaft 21, so that the first bearing 31 can support the rotating shaft 21 more stably and reliably. Thus, the first bearing 31 and the second bearing 32 cooperate to provide a more stable and reliable support effect for the rotor assembly 20, making the rotor assembly 20 operate more stably, and thus the range extender generator 100 can operate more stably and reliably. For example, the snap-fit ​​member 92 can be a snap ring, and the snap-fit ​​groove 213 can extend in a ring shape along the circumference of the rotating shaft 21, so that the snap-fit ​​member 92 can have a larger limiting contact surface with the inner ring of the first bearing 31, so that the snap-fit ​​member 92 can better cooperate with the first shaft shoulder 211 to fix the first bearing 31.

[0097] In one example of this utility model, reference is made to Figure 1 and Figure 9As shown, in the first direction, an elastic washer 91 can be provided between the outer ring of the second bearing 32 and the second stepped surface 1202. The elastic washer 91 can provide a certain axial preload for the installation of the second bearing 32 and the second stepped surface 1202, so that the second bearing 32 can be easily installed in place. It also allows the second bearing 32 to float axially in the first direction while reducing axial movement, allowing the second bearing 32 to adapt to the thermal expansion or contraction of the shaft 21 caused by temperature changes. This ensures that the first bearing 31 and the second bearing 32 can more stably and reliably support the rotor assembly 20 during operation, making the range extender generator 100 operate more stably and effectively reducing the noise generated during operation. For example, the first bearing 31 can form a fixed end supporting the shaft 21, the second bearing 32 can form a floating end supporting the shaft 21, and the elastic washer 91 can be a wave-shaped washer.

[0098] In some examples of this utility model, such as Figure 1 As shown, the end plate 60 may be provided with a through hole, and the mounting base 12 may be provided with a fixing hole 122. The end plate 60 and the mounting base 12 are fastened together by fasteners passing through the through hole and fixing hole 122.

[0099] In this embodiment, the end plate 60 is provided with a through hole, and the mounting base 12 is provided with a fixing hole 122. The end plate 60 and the mounting base 12 are fastened together by fasteners passing through the through hole and fixing hole 122. The structure is simple and facilitates the installation, fixing and disassembly of the end plate 60 and the mounting base 12. This makes it easier to assemble or disassemble the range extender generator 100, and allows the end plate 60 to be stably and reliably fixed to the mounting base 12. This allows the rotor assembly 20 to be stably installed on the mounting base 12 through the installation cooperation of the first bearing 31 with the end plate 60 and the shaft hole 121.

[0100] In one example of this utility model, such as Figure 18 As shown, the fixing hole 122 can be a threaded hole and a blind hole. The opening of the fixing hole 122 faces the end plate 60, and the fastener is threadedly engaged with the inner wall surface of the fixing hole 122.

[0101] In this embodiment, the fixing hole 122 is a threaded hole and a blind hole. The fastener is threaded into the inner wall of the fixing hole 122, which is simple in structure and makes it easier to assemble and fix the end plate 60 to the mounting base 12. For example, the fastener can be a bolt or a screw. The fastener can fasten the end plate 60 to the mounting base 12 from the side with the fixing hole 122 in the first direction, avoiding the need for the operator to perform assembly operations on both sides of the mounting base 12 when assembling the end plate 60 and the mounting base 12.

[0102] In one example of this utility model, such as Figure 1As shown, the fixing hole 122 can be a countersunk hole that penetrates the mounting base 12 along the first direction.

[0103] In this embodiment, the fixing hole 122 is configured as a countersunk hole that penetrates the mounting base 12 along the first direction. Fasteners can be arranged within the countersunk hole and pass through the end plate 60 to assemble and fix the end plate 60 to the mounting base 12. This allows the fasteners and mounting base 12 to have a larger mating surface, enabling the fasteners to more stably and reliably fix the end plate 60 to the mounting base 12. For example, the fasteners may include a bolt and a nut. The head of the bolt is completely located within the fixing hole 122, and the shank of the bolt passes through the fixing hole 122 and threadedly engages with the nut in the end plate 60, thus fixing the end plate 60 to the mounting base 12.

[0104] In some embodiments of this utility model, such as Figure 1 As shown, the shaft hole 121 can penetrate the mounting base 12 along the first direction. The range extender generator 100 also includes a resolver assembly 80, which is disposed in the shaft hole 121 and is used to measure the rotational position and speed of the rotating shaft 21.

[0105] In this embodiment, the shaft hole 121 extends through the mounting base 12 along the first direction. The resolver assembly 80 is set in the shaft hole 121 to measure the rotational position and speed of the rotating shaft 21. The structure is simple, allowing the resolver assembly 80 to be easily assembled into the shaft hole 121. During the assembly of the range extender generator 100, the first bearing 31 and the second bearing 32 of the end plate 60 and the snap-fit ​​component 92 can be pre-assembled with the shaft 21. The elastic washer 91 can be pre-arranged at the second step surface 1202 of the shaft hole 121. The shaft 21 of the rotor assembly 20 can extend into the shaft hole 121 from the side of the mounting base 12 with the first shoulder 211 in the first direction, so that the outer ring of the second bearing 32 abuts against the second step surface 1202, and the outer ring of the first bearing 31 abuts against the first step surface 1201. The end plate 60 is then fastened to the mounting base 12. The resolver assembly 80 can be conveniently installed from the other end of the shaft hole 121 into the third hole section 1213 of the shaft hole 121 and assembled with the shaft 21.

[0106] In one embodiment of this utility model, such as Figure 1 and Figure 18 As shown, the resolver assembly 80 may include a resolver transformer 81 and a resolver heating ring 82. After the rotor of the resolver transformer 81 is installed on the rotating shaft 21, it is interference-fitted with the rotating shaft 21 through the resolver heating ring 82. This allows the resolver assembly 80 to be stably and reliably fixed on the rotating shaft 21, thereby enabling the resolver assembly 80 to stably detect the rotational position and speed of the rotating shaft 21, and allowing the range extender generator 100 to operate stably.

[0107] In some examples of this utility model, such as Figure 1 and Figure 18As shown, it may also include a cover plate 70, which is detachably connected to the housing 10 and seals the shaft hole 121 on the side of the mounting base 12 away from the end plate 60.

[0108] In this embodiment, the cover plate 70 is detachably connected to the housing 10 and seals the shaft hole 121. The structure is simple and easy to disassemble. It provides excellent sealing and protection for the resolver assembly 80, the first bearing 31, and the second bearing 32 within the shaft hole 121, preventing foreign objects from entering the shaft hole 121. This allows the rotating shaft 21 to operate stably and reliably in conjunction with the first bearing 31 and the second bearing 32, ensuring stable operation of the resolver assembly 80 and consequently, the range extender generator. For example, the cover plate 70 can be a resolver cover plate 70.

[0109] In some embodiments of this utility model, such as Figure 1 and Figure 5 As shown, the rotor assembly 20 may also include a support frame 22, which is connected to the rotating shaft 21. The support frame 22 and the rotating shaft 21 cooperate to define a clearance groove 201 that opens toward the mounting base 12. The other end of the mounting base 12 is located in the clearance groove 201.

[0110] In this embodiment, the rotor assembly 20 is provided with a support frame 22. The support frame 22 is connected to the rotating shaft 21 and cooperates with the rotating shaft 21 to define a clearance groove 201. The opening of the clearance groove 201 faces the mounting base 12. The structure is simple, allowing the mounting base 12 to extend partially into the clearance groove 201 along the first direction. This makes the rotor assembly 20 and the mounting base 12 arranged more compactly in the first direction, making the overall structure of the range extender generator more compact. The clearance groove 201 can guide the assembly of the rotating shaft 21 and the shaft hole 121 of the mounting base 12 to a certain extent, making it more convenient for the rotor assembly 20 to be assembled with the mounting base 12 via the rotating shaft 21.

[0111] In one embodiment of this utility model, reference is made to Figure 4 and Figure 8 As shown, the support frame 22 may include: a first segment 221 and a second segment 222. One end of the first segment 221 is connected to the rotating shaft 21, and the other end of the first segment 221 extends outward along the radial direction of the rotating shaft 21. The first segment 221 extends in a ring shape along the circumference of the rotating shaft 21. The second segment 222 extends in a ring shape along the circumference of the mounting base 12. In a first direction, one end of the second segment 222 is connected to the other end of the first segment 221, and the other end of the second segment 222 extends away from the first segment 221 along the circumference of the rotating shaft 21. The second segment 222 and the first segment 221 cooperate to define an avoidance groove 201.

[0112] In this embodiment, the support frame 22 includes a first segment 221 and a second segment 222. The first segment 221 and the second segment 222 cooperate to define a clearance groove 201. The first segment 221 and the second segment 222 are located outside the mounting base 12. One end of the first segment 221 is connected to the rotating shaft 21, and the other end extends outward along the radial direction of the rotating shaft 21 in a first direction. The first segment 221 can be located on the side of the mounting base 12 away from the housing body 11. Since the rotating shaft 21 is arranged to extend into the shaft hole 121 of the mounting base 12, the first segment 221 is located at the center of gravity of the rotor assembly 20 in the first direction. In this embodiment, one end of the second segment 222 is connected to the other end of the first segment 221, and the other end extends circumferentially away from the first segment 221 along the shaft 21. This simple structure provides the support frame 22 with good structural strength and allows its center of gravity to be closer to that of the rotor assembly 20. This ensures the overall center of gravity of the rotor assembly 20 is more stably positioned between the first bearing 31 and the second bearing 32, effectively meeting the assembly requirements of the rotor assembly 20 with the first bearing 31, the second bearing 32, and the mounting base 12. The first segment 221 extends radially outward along the shaft 21, providing sufficient space in the clearance groove 201 to accommodate the mounting base 12. This allows the end of the mounting base 12 extending into the clearance groove 201 to be positioned closer to the bottom of the groove, resulting in a more compact arrangement of the support frame 22 and the mounting base 12.

[0113] In one embodiment of this utility model, such as Figure 1 and Figure 5 As shown, the rotor assembly 20 may further include: a fixed frame 23, a rotor core 24, and a dynamic balancing plate 25. The fixed frame 23 is connected to the support frame 22 and is located on the outer side of the support frame 22 in the radial direction of the rotating shaft 21. The fixed frame 23 extends in a ring shape along the circumference of the mounting base 12. The rotor core 24 extends in a ring shape along the circumference of the mounting base 12 and is fixed on the outer circumferential surface of the fixed frame 23. The dynamic balancing plate 25 is disposed on both sides of the rotor core 24 in the first direction.

[0114] In this embodiment, the rotor assembly 20 is provided with a fixing frame 23, a rotor core 24, and a dynamic balance plate 25. The fixing frame 23 extends in a ring along the circumference of the mounting base 12 and is connected to the support frame 22. The structure is simple. The fixing frame 23 can provide a stable mounting position for the rotor core 24 and the dynamic balance plate 25, making the rotor assembly 20 easier to assemble. The rotor core 24 extends in a ring along the circumference of the mounting base 12 and is fixed on the outer circumferential surface of the fixing frame 23. The fixing frame 23 extends in a ring along the circumference of the mounting base 12, which can make the center of gravity of the rotor assembly 20, including the shaft 21, support frame 22, fixing frame 23, rotor core 24, and dynamic balance plate 25, relatively stably located between the first bearing 31 and the second bearing 32. This allows the rotor assembly 20 to operate more stably and reliably after being assembled with the mounting base 12, and allows the rotor assembly 20 and the mounting base 12 to be arranged compactly in the first direction, thereby reducing the overall size of the range extender generator to a certain extent.

[0115] In some examples of this utility model, such as Figure 4 and Figure 5 As shown, the other end of the second segment 222 is connected to the radial inner wall of the fixed frame 23. In the first direction, the other end of the second segment 222 is connected to the middle position of the fixed frame 23. In this embodiment, the other end of the second segment 222 of the support frame 22 is connected to the radial inner wall of the fixed frame 23. The structure is simple, allowing the support frame 22 to provide good support for the fixed frame 23, thereby providing good support for the rotor core 24. The end of the second segment 222 connected to the fixed frame 23 is connected to the middle position of the fixed frame 23 in the first direction, so that the fixed frame 23 can receive stable support in the first direction. This allows the rotor core 24 and the dynamic balance plate 25 to be stably and reliably fixed to the fixed frame 23, making the rotor assembly 20 more stable during operation.

[0116] In some examples of this utility model, references Figure 5 and Figure 7 As shown, in the first direction, the two sides of the fixing frame 23 can be riveted flanges, and the fixing frame 23 is riveted to the dynamic balance plate 25 and the rotor core 24 through the riveted flanges.

[0117] In this embodiment, the fixing frame 23 is provided with a riveted flange and a dynamic balance gauge and rotor core 24 for press-fit connection. The structure is simple, so that the dynamic balance plate 25 and rotor core 24 can be fixed to the fixing frame 23 stably, reliably and conveniently, which facilitates the assembly of rotor assembly 20 and enables rotor assembly 20 to operate stably.

[0118] In one embodiment of this utility model, such as Figure 7 and Figure 8As shown, the first segment 221 may be provided with a clearance hole, which extends through the first segment 221 along a first direction. In the first direction, the axis of the clearance hole is collinear with the axis of the fixing hole 122 on the mounting base 12.

[0119] In this embodiment, a clearance hole is provided on the first segment 221. The axis of the clearance hole is collinear with the axis of the fixing hole 122. This allows the end plate 60 and the mounting base 12 to be assembled and fixed using fasteners. The fasteners can easily pass through the clearance hole to secure the end plate 60 and the mounting base 12. The structure is simple and can well meet the assembly requirements of the rotor assembly 20 and the mounting base 12. For example, the size of the clearance hole can be larger than the radial dimension of the fastener to facilitate the smooth passage of the fastener through the clearance hole and the fastening operation of the assembly tool through the clearance hole.

[0120] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the shell body 11 may have an annular plate 111 and a side plate 112. The annular plate 111 extends into a cylindrical shape along a first direction. The side plate 112 is connected to one end of the annular plate 111 in the first direction. The mounting base 12 is connected to the side plate 112 and arranged on the radial inner side of the annular plate 111. The annular plate 111, the side plate 112 and the mounting base 12 cooperate to define a receiving cavity 101. The stator assembly 40 of the range extender generator 100 is disposed in the receiving cavity 101.

[0121] In this embodiment, the main body of the housing 10 is provided with an annular plate 111 and a side plate 112. The annular plate 111, the side plate 112, and the mounting base 12 cooperate to define the receiving cavity 101. The structure is simple and facilitates the assembly and arrangement of components such as the stator assembly 40 and the rotor assembly 20, including the support frame 22, the fixing frame 23, and the rotor core 24, in the housing 10. The annular plate 111 extends into a cylindrical shape along the first direction, which allows the receiving cavity 101 to have sufficient space in the first direction for the arrangement of the stator assembly 40, etc. The side plate 112 is connected to the annular plate. At one end of the first direction, the mounting base 12 is connected to the side plate 112 and arranged on the radial inner side of the ring plate 111. After the rotor assembly 20 is installed on the mounting base 12 through the rotating shaft 21, the support frame 22, the fixing frame 23, the rotor core 24 and the dynamic balance plate 25 in the rotor assembly 20 can be stably arranged in the receiving cavity 101. This makes the rotor assembly 20, the mounting base 12 and the stator assembly 40 arranged on the same side of the side plate 112 in the first direction, which makes the range extender generator easier to assemble.

[0122] In one embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 15As shown, the stator assembly 40 may include multiple splicing units 41, which are arranged circumferentially along the mounting base 12 and connected end to end to form a ring. The stator assembly 40 is fixedly connected to the ring plate 111.

[0123] In this embodiment, the stator assembly 40 includes multiple splicing units 41. The splicing units 41 are arranged circumferentially along the mounting base 12 and connected end to end in a ring shape. The structure is simple and meets the operating requirements of the range extender generator 100. The stator assembly 40 is fixedly connected to the ring plate 111, so that the stator assembly 40 can be easily installed into the receiving cavity 101. By setting multiple splicing units 41, the stator assembly 40 has a high degree of modularity, allowing the splicing units 41 in the stator assembly 40 to be manufactured individually, thereby reducing the difficulty of overall production of the stator assembly 40 and making the production and manufacturing of the stator assembly 40 more convenient and easier.

[0124] In some examples of this utility model, such as Figure 1 and Figure 13 As shown, the range extender generator 100 may also include a fixing ring 50, which extends in a ring shape along the circumference of the mounting base 12. The fixing ring 50 is disposed in the receiving cavity 101 and connected to the ring plate 111. The outer peripheral wall of the stator assembly 40 is interference-fitted with the inner peripheral wall of the fixing ring 50.

[0125] In this embodiment, a fixing ring 50 is provided. The fixing ring 50 extends circumferentially along the mounting base 12 and is connected to the ring plate 111. The fixing ring 50 and the ring plate 111 can be concentric structures. The outer peripheral wall of the stator assembly 40 and the inner peripheral wall of the fixing ring 50 are interference-fitted, which allows the multiple splicing units 41 of the stator assembly 40 to be stably and reliably assembled and fixed with the fixing ring 50. This allows the stator assembly 40 to be stably fixed on the housing 10 when the range extender generator 100 is running, thereby allowing the stator assembly 40 to stably cooperate with the rotor assembly 20 and enabling the range extender generator 100 to operate more stably and reliably. For example, in the first direction, the two ends of the fixing ring 50 can be provided with stoppers to be positioned and aligned with the housing body 11, facilitating the assembly of the fixing ring 50 and the housing 10. The fixing ring 50 and the ring plate 111 can also be fastened together by fastening screws to prevent the fixing ring 50 from moving axially and circumferentially along the rotating shaft 21, making the fixing ring 50 and the ring plate 111 more securely fixed.

[0126] In one example of this utility model, such as Figure 13 As shown, the fixing ring 50 may be provided with a limiting rib 51. The limiting rib 51 is provided at one end of the fixing ring 50 facing the side plate 112 in the first direction and is formed on the radial inner side of the fixing ring 50. The limiting rib 51 extends inward along the radial direction of the fixing ring 50. In the first direction, the stator assembly 40 abuts against the limiting rib 51.

[0127] In this embodiment, a limiting rib 51 is provided on the radial inner side of the fixed ring 50 to limit the stator assembly 40. The structure is simple and facilitates the stable and reliable assembly of the stator assembly 40 with the fixed ring 50 in the first direction. The limiting rib 51 can play a good limiting role on the stator assembly 40 in the first direction, thereby greatly reducing the probability of axial movement of the stator assembly 40 when the range extender generator 100 is running. This allows the stator assembly 40 and the rotor assembly 20 to cooperate more stably, thus making the range extender generator 100 operate more stably and reliably.

[0128] In some examples of this utility model, such as Figure 17 As shown, the splicing unit 41 may include: an insulating frame 412 and a stator winding 413, the stator winding 413 being wound on the insulating frame 412; and a stator core 411, the insulating frame 412 being sleeved on the stator core 411. In the circumferential direction of the stator assembly 40, the two ends of the stator core 411 are respectively formed with a locking protrusion 4111 and a locking groove 4112. The stator cores 411 of two adjacent splicing units 41 are connected by locking protrusion 4111 and locking groove 4112.

[0129] In this embodiment, the splicing unit 41 includes an insulating frame 412 and a stator winding 413. The stator winding 413 is wound on the insulating fixing frame 23, and the insulating frame 412 is sleeved on the stator core 411. The structure is simple and meets the usage requirements of the splicing unit 41. The stator core 411 forms a locking protrusion 4111 and a locking groove 4112 at both ends of the stator assembly 40 in the circumferential direction. The stator cores 411 of two adjacent splicing units 41 are connected by locking protrusions 4111 and locking grooves 4112. The structure is simple and facilitates the splicing and assembly of multiple splicing parts, making the stator assembly 40 more convenient to assemble, repair and replace. When the stator assembly 40 needs to be replaced, only the faulty splicing unit 41 needs to be replaced, thereby reducing the replacement cost of the stator assembly 40 and reducing the maintenance cost of the range extender generator 100.

[0130] In this embodiment, the stator winding 413 is arranged on each splicing unit 41, so that the span of the stator winding 413 in the stator assembly 40 is small, thereby the overall structure of the stator assembly 40 can have a smaller size in the first direction and the radial direction of the rotating shaft 21, thus making the space occupied by the stator assembly 40 in the receiving cavity 101 smaller, and thus making the overall structure of the range extender generator more compact and the volume can be set smaller.

[0131] In one example of this invention, the thickness of the insulating frame 412 can be greater than or equal to 0.5 mm and less than or equal to 1 mm. This allows the insulating frame 412 to have sufficient thickness to provide stable insulation for the stator winding 413 and the stator core 411, while also reducing the material used in the insulating frame 412, thus lowering its production cost and consequently reducing the production cost of the stator assembly 40. For example, the thickness of the insulating frame 412 can be 0.5 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc. Exemplarily, the insulating frame 412 can be a glass fiber component, such as a polyphthalamide plastic component reinforced with 30% glass fiber or a polyphenylene sulfide plastic component reinforced with 30% glass fiber.

[0132] In some examples of this utility model, such as Figure 1 and Figure 18 As shown, the range extender generator 100 may also include a fixing ring 50, which extends in a ring shape along the circumference of the mounting base 12. The fixing ring 50 is disposed in the receiving cavity 101 and connected to the ring plate 111. The fixing ring 50 and the ring plate 111 cooperate to define a cooling flow channel 102.

[0133] In this embodiment, the fixing ring 50 and the ring plate 111 cooperate to define the cooling channel 102. The structure is simple and can well meet the cooling and heat dissipation needs of the range extender generator 100 during operation. The fixing ring 50 and the ring plate 111 cooperate to define the cooling channel 102, and the fixing ring 50 is interference-fitted with the stator assembly 40 to fix the stator assembly 40. Compared with the case where the cooling channel 102 is set separately on the housing 10, it can avoid the need to add a steel sleeve to fix the stator assembly 40, so that the number of parts in the range extender generator 100 is reduced, thereby making the overall volume of the range extender generator 100 smaller and the overall structure more compact. This can make the placement of the range extender in the vehicle more convenient to a certain extent.

[0134] In one example of this utility model, reference is made to Figure 7 and Figure 18 As shown, in the first direction, the cooling channel 102 can extend circumferentially spirally along the mounting base 12.

[0135] In this embodiment, the cooling channel 102 extends spirally along the circumferential direction of the mounting base 12 in the first direction, allowing the cooling fluid to cover a larger surface area when flowing along the cooling channel 102. This results in a longer flow distance for the cooling fluid along the cooling channel 102, enabling the cooling fluid to better participate in heat exchange and improving the heat dissipation effect of the range extender generator 100, thereby making the operation of the range extender generator 100 more stable. For example, a water channel plate can be provided on the radially outer side of the fixing ring 50. The water channel plate extends spirally along the circumferential direction of the fixing ring 50 in the first direction, and can cooperate with the fixing ring 50 and the ring plate 111 to define the cooling channel 102.

[0136] In one example of this utility model, reference is made to Figure 1 and Figure 19 As shown, a plurality of first flow channel plates 52 may be provided on the radially outer side of the fixed ring 50. The first flow channel plates 52 extend radially toward the ring plate 111 along the fixed ring 50. The plurality of first flow channel plates 52 are arranged at intervals along the first direction. A plurality of second flow channel plates 1111 are provided on the radially inner side of the ring plate 111. The second flow channel plates 1111 extend radially toward the fixed ring 50 along the fixed ring 50. The plurality of second flow channel plates 1111 are arranged at intervals along the first direction and are staggered with the plurality of first flow channel plates 52. The fixed ring 50, the ring plate 111, the plurality of first flow channel plates 52 and the plurality of second flow channel plates 1111 cooperate to form a cooling channel 102.

[0137] In this embodiment, a plurality of first flow channel plates 52 are arranged at intervals in the first direction on the radially outer side of the fixed ring 50, and a plurality of second flow channel plates 1111 are arranged at intervals in the first direction on the radially inner side of the ring plate 111. The first flow channel plates 52 and the second flow channel plates 1111 are arranged alternately, so that the cooling flow channel 102 formed between the fixed ring 50 and the ring plate 111 increases the flow path in the radial direction of the fixed ring 50, so that the cooling fluid can better exchange heat with the ring plate 111 and the fixed ring 50, so that the range extender generator 100 can obtain a good heat exchange and cooling effect when it is running.

[0138] In this embodiment, multiple first flow channel plates 52 are provided on the fixing ring 50, which can strengthen the structure of the fixing ring 50, thereby enabling the fixing ring 50 to fix the stator assembly 40 more stably. Multiple second flow channel plates 1111 are provided on the ring plate 111, which can strengthen the structure of the ring plate 111, thereby making the overall structure of the housing 10 more stable and reliable, and enabling the housing 10 to provide more stable protection for the stator assembly 40 and other components in the receiving cavity 101.

[0139] In one example of this utility model, such as Figure 1As shown, the fixed ring 50 may be provided with sealing elements 93 at both ends in the first direction. The sealing elements 93 are located on both sides of the cooling channel 102 and are sealed between the fixed ring 50 and the ring plate 111.

[0140] In this embodiment, the fixing ring 50 is provided with sealing elements 93 at both ends in the first direction to seal the cooling channel 102. The structure is simple and can effectively seal the cooling channel 102, allowing the cooling fluid to flow stably within it to dissipate heat from the range extender generator 100. It also significantly reduces the probability of cooling fluid leaking into the receiving cavity 101, which could lead to electrical faults or mechanical damage, thus ensuring stable operation of the range extender generator 100. For example, the sealing element 93 can be a sealing ring, and the ring plate 111 and / or the fixing ring 50 can be provided with sealing grooves for the installation and fixation of the sealing element 93.

[0141] In some embodiments of this utility model, reference is made to Figure 8 As shown, the rotating shaft 21 can be configured to be splinedly connected to the output shaft of the range extender engine.

[0142] In this embodiment, the rotating shaft 21 is configured to be splinedly connected to the output shaft of the range extender engine. This effectively reduces the impact of torque pulsation during the operation of the range extender engine on the rotating shaft 21, allowing the torque of the range extender engine to be transmitted to the rotating shaft 21 more stably. This reduces the probability of torque pulsation in the range extender generator 100, enabling the rotating shaft 21 to operate more stably and reliably, and consequently, the range extender generator 100 to operate more stably and reliably. For example, the rotating shaft 21 can be connected to the output shaft of the range extender generator 100 via a torsional damper to reduce vibration during the coordinated operation of the range extender engine and the range extender generator 100, thereby improving the stability of the range extender during operation.

[0143] The following is for reference. Figures 1-19 A range extender according to a second aspect embodiment of the present invention is described.

[0144] like Figures 1-19 As shown, the range extender according to an embodiment of the present invention includes: a range extender engine and a range extender generator 100 according to a first aspect embodiment of the present invention, wherein the rotating shaft 21 of the range extender generator 100 is drively connected to the output shaft of the range extender engine.

[0145] Other configurations and operations of the range extender according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0146] According to the range extender of the present invention, by setting the range extender generator 100 of the first aspect embodiment, by providing a shaft hole 121 extending in a first direction on the mounting base 12 of the housing 10, the first bearing 31 and the second bearing 32 are arranged at intervals in the first direction and are both disposed in the shaft hole 121, the rotating shaft 21 of the rotor assembly 20 is rotatably disposed on the mounting base 12 through the first bearing 31 and the second bearing 32, so that the rotor assembly 20 can be supported more stably and reliably, thereby improving the operational stability and reliability of the range extender generator 100, and avoiding the increase in the number of components in the housing 10, so that the range extender generator 100 maintains a smaller volume and weight, and the overall structure of the range extender generator 100 is more compact.

[0147] The following is for reference. Figures 1-19 A vehicle according to a third aspect of the present invention is described.

[0148] Other components and operations of the vehicle according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0149] like Figures 1-19 As shown, in the vehicle according to the present utility model embodiment, by providing the range extender of the second aspect embodiment described above, by providing a shaft hole 121 extending in a first direction on the mounting base 12 of the housing 10, the first bearing 31 and the second bearing 32 are arranged at intervals in the first direction and are both disposed in the shaft hole 121, the rotating shaft 21 of the rotor assembly 20 is rotatably disposed on the mounting base 12 through the first bearing 31 and the second bearing 32, so that the rotor assembly 20 can be supported more stably and reliably, thereby improving the operational stability and reliability of the range extender generator 100, and avoiding the increase in the number of components in the housing 10, so that the range extender generator 100 maintains a smaller volume and weight, and the overall structure of the range extender generator 100 is more compact.

[0150] The following will refer to Figures 1-19 This invention describes a vehicle according to a specific embodiment of the present invention.

[0151] like Figures 1-19 As shown, the vehicle is equipped with a range extender, which includes a range extender engine and a range extender generator 100.

[0152] The range extender generator 100 includes a housing 10, a rotor assembly 20, a first bearing 31, a second bearing 32, a stator assembly 40, a resolver assembly 80, a cover plate 70, an end plate 60, and a fixing ring 50. The housing 10 includes a housing body 11 and a mounting seat 12. The housing body 11 includes an annular plate 111 and a side plate 112. The axial direction of the annular plate 111 is the first direction. One side of the annular plate 111 in the first direction is connected to the side plate 112. The mounting seat 12 extends along the first direction and one end thereof is connected to the side plate 112. The mounting seat 12 and the annular plate 111 are located on the same side of the side plate 112. The annular plate 111 extends circumferentially along the fixing seat to form an annular shape. The annular plate 111, the side plate 112, and the mounting seat 12 cooperate to define a receiving cavity 101. The housing body 11 and the mounting seat 12 are integrated parts. The cross-section of the housing 10 along the axial direction can be formed into a "mountain" - shaped structure. The housing body 11 is a thin - wall structure. The housing 10 is made of aluminum alloy.

[0153] The mounting seat 12 is provided with a shaft hole 121. The shaft hole 121 penetrates the mounting seat 12 along the first direction. The shaft hole 121 includes a first hole section 1211, a second hole section 1212, and a third hole section 1213 in the direction from the end of the mounting seat 12背离侧板112 to the side plate 112. The aperture of the first hole section 1211 is larger than that of the second hole section 1212, and the aperture of the second hole section 1212 is larger than that of the third hole section 1213. A first step surface 1201 is formed between the first hole section 1211 and the second hole section 1212, and a second step surface 1202 is formed between the second hole section 1212 and the third hole section 1213. The mounting seat 12 is provided with a fixing hole 122.

[0154] The rotor assembly 20 includes a rotating shaft 21, a support frame 22, a fixing frame 23, a rotor core 24, and a dynamic balance plate 25. The rotating shaft 21, the support frame 22, and the fixing frame 23 can be integrated parts. The cross - section of the rotating shaft 21 and the support frame 22 along the axial direction of the rotating shaft 21 can be formed into a "towel" - shaped structure. The rotating shaft 21 extends along the first direction. The rotating shaft 21 is provided with a first shaft shoulder 211, a second shaft shoulder 212, and a clamping groove 213. A part of the rotating shaft 21 is disposed in the shaft hole 121. The first bearing 31 is arranged between the first shaft shoulder 211 and the first step surface 1201. The second bearing 32 is arranged between the second shaft shoulder 212 and the second step surface 1202. A snap ring is provided in the clamping groove 213. The snap ring and the first step surface 1201 are located on the same side of the first bearing 31 in the first direction. The snap ring and the first shaft shoulder 211 respectively abut against the inner ring of the first bearing 31 on both sides of the first bearing 31. The end plate 60 is arranged at the end of the mounting seat 12背离侧板112. The end plate 60 and the mounting seat 12 are fixedly connected by fasteners. The end plate 60 and the first step surface 1201 respectively abut against the outer ring of the first bearing 31 on both sides of the first bearing 31.

[0155] It should be noted that there are some Chinese characters "背离侧板112" in the original text which seem to be incorrect or incomplete expressions in this context. I have translated them as "背离侧板112" as they are in the original, but it may need to be further clarified in the original technical content.The outer ring of the second bearing 32 abuts against the second stepped surface 1202. An elastic washer 91, which is a wave-shaped washer, is also provided between the outer ring of the second bearing 32 and the second stepped surface 1202. The inner ring of the second bearing 32 abuts against the second shoulder 212. The resolver assembly 80 is located in the third hole section 1213 and installed on the rotating shaft 21. The resolver assembly 80 includes a resolver transformer 81 and a resolver heating ring 82. The resolver transformer 81 is fixed to the rotating shaft 21 through the resolver heating ring 82. The cover plate 70 seals the shaft hole 121 at the end of the mounting base 12 that is connected to the side plate 112. The cover plate 70 is fastened to the mounting base 12.

[0156] The support frame 22 includes a first segment 221 and a second segment 222. The first segment 221 is located on the side of the mounting base 12 facing away from the side plate 112 in a first direction. The first segment 221 can be disc-shaped and is connected to the rotating shaft 21. One end of the second segment 222 is connected to the radial outer end of the first segment 221, and the other end of the second segment 222 extends circumferentially away from the first segment 221 along the rotating shaft 21. The first segment 221 and the second segment 222 cooperate to form a relief groove 201. The opening of the relief groove 201 faces the mounting base 12, and part of the mounting base 12 is located in the relief groove 201. The fixing frame 23 extends in a ring shape along the circumference of the mounting base 12 and is connected to the other end of the second segment 222. The support frame 22 and the fixing frame 23 can be an integral piece. The rotor core 24 and the dynamic balance plate 25 are fixed on the radial outer side of the fixed frame 23. The dynamic balance plate 25 is arranged on both sides of the rotor core 24 in the first direction, and the rotor core 24 is provided with magnets.

[0157] The stator assembly 40 includes multiple splicing units 41. Each splicing unit 41 includes a stator core 411, an insulating frame 412, and a stator winding 413. The stator core 411 has a locking protrusion 4111 and a locking groove 4112 formed on both sides of the stator assembly 40 in the circumferential direction. The insulating frame 412 is sleeved on the stator core 411, and the stator winding 413 is wound on the insulating frame 412. The multiple splicing units 41 are connected by locking protrusions 4111 and locking grooves 4112 on the stator core 411 of adjacent splicing units 41, forming a ring by connecting end to end. The retaining ring 50 extends circumferentially along the mounting base 12 in an annular shape. In the radial direction of the rotating shaft 21, the retaining ring 50 is located between the stator assembly 40 and the ring plate 111, defining a cooling channel 102 between the retaining ring 50 and the ring plate 111. In a first direction, sealing elements 93, which are sealing rings, are provided on both sides of the cooling channel 102. The radially outer wall surface of the stator assembly 40 is interference-fitted with the radially inner wall surface of the retaining ring 50. The center of gravity of the rotor assembly 20 is located on the axis of the rotating shaft 21 and between the first bearing 31 and the second bearing 32. A spline 214 is provided on the outer circumferential surface of the end of the rotating shaft 21 facing away from the side plate 112. In the first direction, a connecting flange can be formed at the end of the ring plate 111 away from the side plate 112. When the range extender is assembled, the range extender generator 100 can be assembled and fixed to the mounting surface of the range extender engine through the connecting flange. The rotating shaft 21 can be connected to the output shaft of the range extender engine through a torsional damper spline.

[0158] In this embodiment, a shaft hole 121 extending in a first direction is provided on the mounting base 12 of the housing 10. The first bearing 31 and the second bearing 32 are arranged at intervals in the first direction and are both disposed in the shaft hole 121. The rotating shaft 21 of the rotor assembly 20 is rotatably disposed on the mounting base 12 through the first bearing 31 and the second bearing 32, so that the rotor assembly 20 can be supported more stably and reliably. This results in better operational stability and reliability of the range extender generator 100, and avoids increasing the number of components in the housing 10, keeping the range extender generator 100 smaller in size and weight, and making the overall structure of the range extender generator 100 more compact.

[0159] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0160] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0161] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0162] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0163] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A range extender generator, characterized in that, include: The housing (10) includes: a housing body (11) and a mounting base (12), the mounting base (12) extending along a first direction and one end connected to the housing body (11), the mounting base (12) having a shaft hole (121) extending along the first direction; A first bearing (31) and a second bearing (32) are disposed in the shaft hole (121) and are arranged at intervals in the first direction; The rotor assembly (20) includes a shaft (21) extending along the first direction and having one end inserted into the shaft hole (121). The shaft (21) is rotatably mounted on the mounting base (12) via the first bearing (31) and the second bearing (32).

2. The range extender generator according to claim 1, characterized in that, The first direction is horizontal, and in the first direction, the first bearing (31) and the second bearing (32) are located on both sides of the center of gravity of the rotor assembly (20).

3. The range extender generator according to claim 1, characterized in that, The shaft hole (121) includes a first hole segment (1211) and a second hole segment (1212) connected in the first direction. The first hole segment (1211) and the second hole segment (1212) are arranged coaxially. The radial dimension of the first hole segment (1211) is greater than the radial dimension of the second hole segment (1212). The first bearing (31) is disposed in the first hole segment (1211), and the second bearing (32) is disposed in the second hole segment (1212).

4. The range extender generator according to claim 3, characterized in that, The shaft hole (121) further includes a third hole segment (1213), which is connected to and coaxially arranged with the second hole segment (1212). The radial dimension of the third hole segment (1213) is smaller than that of the second hole segment (1212). A first step surface (1201) is formed between the first hole segment (1211) and the second hole segment (1212), and a second step surface (1202) is formed between the second hole segment (1212) and the third hole segment (1213). In the first direction, the outer ring of the first bearing (31) abuts against the first step surface (1201), and the outer ring of the second bearing (32) abuts against the second step surface (1202).

5. The range extender generator according to claim 4, characterized in that, The rotating shaft (21) is provided with a first shoulder (211) and a second shoulder (212). In the first direction, the first shoulder (211) is located on the side of the first bearing (31) away from the first step surface (1201) and abuts against the inner ring of the first bearing (31). The second shoulder (212) is located on the side of the second bearing (32) away from the second step surface (1202) and abuts against the inner ring of the second bearing (32).

6. The range extender generator according to claim 3, characterized in that, It also includes an end plate (60), which is disposed at the other end of the mounting base (12) in the first direction. The end plate (60) is connected to the mounting base (12) and abuts against the outer ring of the first bearing (31).

7. The range extender generator according to claim 6, characterized in that, The end plate (60) is provided with a through hole, and the mounting base (12) is provided with a fixing hole (122). The end plate (60) and the mounting base (12) are fastened together by fasteners passing through the through hole and the fixing hole (122).

8. The range extender generator according to claim 7, characterized in that, The fixing hole (122) is a threaded hole and a blind hole. The opening of the fixing hole (122) faces the end plate (60). The fastener is threadedly engaged with the inner wall surface of the fixing hole (122).

9. The range extender generator according to claim 7, characterized in that, The fixing hole (122) is a countersunk hole that penetrates the mounting base (12) along the first direction.

10. The range extender generator according to claim 1, characterized in that, The shaft hole (121) passes through the mounting base (12) along the first direction. The range extender generator also includes a resolver assembly (80), which is disposed in the shaft hole (121) and is used to measure the rotational position and speed of the rotating shaft (21).

11. The range extender generator according to any one of claims 1-10, characterized in that, The rotor assembly (20) also includes a support frame (22) connected to the rotating shaft (21). The support frame (22) and the rotating shaft (21) cooperate to define a clearance groove (201) that opens toward the mounting base (12). The other end of the mounting base (12) is located in the clearance groove (201).

12. The range extender generator according to claim 11, characterized in that, The support frame (22) includes: The first segment (221) has one end connected to the rotating shaft (21) and the other end of the first segment (221) extends outward along the radial direction of the rotating shaft (21). The first segment (221) extends in a ring along the circumference of the rotating shaft (21). The second segment (222) extends in a ring shape along the circumference of the mounting base (12). In the first direction, one end of the second segment (222) is connected to the other end of the first segment (221). The other end of the second segment (222) extends away from the first segment (221) along the circumference of the pivot (21). The second segment (222) and the first segment (221) cooperate to define the clearance groove (201).

13. The range extender generator according to claim 11, characterized in that, The rotor assembly (20) also includes: A fixing frame (23) is connected to the support frame (22) and is located on the radial side of the support frame (22) on the outside of the rotating shaft (21). The fixing frame (23) extends in a ring shape along the circumference of the mounting base (12). Rotor core (24), the rotor core (24) extends in a ring along the circumference of the mounting base (12) and is fixed on the outer circumferential surface of the fixing frame (23); Dynamic balancing plate (25), the dynamic balancing plate (25) is disposed on both sides of the rotor core (24) in the first direction.

14. The range extender generator according to any one of claims 1-10, characterized in that, The shell body (11) has an annular plate (111) and a side plate (112). The annular plate (111) extends in a cylindrical shape along a first direction. The side plate (112) is connected to one end of the annular plate (111) in the first direction. The mounting base (12) is connected to the side plate (112) and arranged radially inside the annular plate (111). The annular plate (111), the side plate (112) and the mounting base (12) cooperate to define a receiving cavity (101). The stator assembly (40) of the range extender generator is disposed in the receiving cavity (101).

15. The range extender generator according to claim 14, characterized in that, The stator assembly (40) includes multiple splicing units (41), which are arranged circumferentially along the mounting base (12) and connected end to end to form a ring. The stator assembly (40) is fixedly connected to the ring plate (111).

16. The range extender generator according to claim 15, characterized in that, The range extender generator also includes a fixing ring (50), which extends in a ring shape along the circumference of the mounting base (12). The fixing ring (50) is located in the receiving cavity (101) and connected to the ring plate (111). The outer peripheral wall of the stator assembly (40) is interference-fitted with the inner peripheral wall of the fixing ring (50).

17. The range extender generator according to claim 15, characterized in that, The splicing unit (41) includes: Insulating frame (412); Stator winding (413), the stator winding (413) is wound on the insulating frame (412); The stator core (411) is fitted with the insulating frame (412). In the circumferential direction of the stator assembly (40), the two ends of the stator core (411) are respectively formed with a locking protrusion (4111) and a locking groove (4112), and the stator cores (411) of two adjacent splicing units (41) are connected by the locking protrusion (4111) and the locking groove (4112).

18. The range extender generator according to claim 15, characterized in that, The range extender generator also includes a fixing ring (50), which extends in a ring shape along the circumference of the mounting base (12). The fixing ring (50) is located in the receiving cavity (101) and connected to the ring plate (111). The fixing ring (50) and the ring plate (111) cooperate to define a cooling channel (102).

19. The range extender generator according to claim 18, characterized in that, In the first direction, the cooling channel (102) extends circumferentially spirally along the mounting base (12).

20. The range extender generator according to claim 18, characterized in that, The fixing ring (50) has a plurality of first flow channel plates (52) on its radially outer side. The first flow channel plates (52) extend radially toward the ring plate (111) along the fixing ring (50). The plurality of first flow channel plates (52) are arranged at intervals along the first direction. The ring plate (111) has a plurality of second flow channel plates (1111) on its radially inner side. The second flow channel plates (1111) extend radially toward the fixing ring (50) along the fixing ring (50). The plurality of second flow channel plates (1111) are arranged at intervals along the first direction and are staggered with the plurality of first flow channel plates (52). The fixing ring (50), the ring plate (111), the plurality of first flow channel plates (52) and the plurality of second flow channel plates (1111) cooperate to form the cooling channel (102).

21. The range extender generator according to claim 18, characterized in that, The fixing ring (50) is provided with sealing elements (93) at both ends in the first direction. The sealing elements (93) are located on both sides of the cooling channel (102) and are sealed between the fixing ring (50) and the ring plate (111).

22. The range extender generator according to claim 1, characterized in that, The shaft (21) is configured to be connected to the output shaft spline (214) of the range extender engine.

23. A range extender, characterized in that, include: The range extender engine and the range extender generator according to any one of claims 1-22, wherein the rotating shaft (21) of the range extender generator is drively connected to the output shaft of the range extender engine.

24. A vehicle, characterized in that, Includes the range extender according to claim 23.

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