Generator assembly and vehicle

Abstract

The generator assembly comprises an engine, a motor and a controller rear cover, the engine comprises an engine cylinder body and an engine crankshaft rotationally arranged on the engine cylinder body, the engine crankshaft comprises a shaft body main body and an outer extending section arranged at one end of the shaft body main body, and the outer extending section is arranged at the other end of the shaft body main body. The overhanging section is positioned outside the engine cylinder body; a motor rotor support of the motor is connected to the overhanging section, a shaft hole is formed in a motor rear cover of the motor, a bearing is arranged in the shaft hole, the overhanging section is arranged in the bearing in a penetrating mode, a cavity is formed between the motor rear cover and the controller rear cover, and the cavity can be used for installing a control element of the generator assembly. The generator assembly is light in overall weight, low in cost, large in space in the axial direction of the engine crankshaft, high in integration level and high in stability of rotation of the engine crankshaft.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, and in particular to a generator assembly. Meanwhile, the utility model also relates to a vehicle using the generator assembly. Background Art

[0002] An engine is a machine that can convert other forms of energy into mechanical energy. Taking a gasoline engine as an example, it mixes air and gasoline, compresses and ignites them, and produces explosion and combustion in the cylinder, thereby driving the piston to move and driving the engine crankshaft to rotate to output power.

[0003] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. The motor is mainly composed of two parts: the motor stator and the motor rotor. The motor and the engine are usually connected through a flywheel and a shock absorber. The structure is complex, the overall weight is heavy, and the cost is high.

[0004] In addition, in the existing generator assembly in which the motor and the engine are integrated together, since the flywheel and the shock absorber are integrated between the engine and the motor, the generator assembly occupies a large space in the axial direction of the engine crankshaft, and it is difficult to arrange the control elements of the generator assembly in the axial direction. Utility Model Content

[0005] In view of this, the utility model aims to provide a generator assembly with high integration, light overall weight and low cost.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A generator assembly includes an engine, a motor and a controller rear cover, wherein;

[0008] The engine comprises an engine cylinder block and an engine crankshaft rotatably arranged on the engine cylinder block, the engine crankshaft comprises a shaft body, and an overhanging section arranged at one end of the shaft body, the overhanging section is located outside the engine cylinder block;

[0009] The motor rotor support of the motor is connected to the extended section, the motor rear cover of the motor is provided with an axial hole, a bearing is provided in the axial hole, and the extended section is inserted into the bearing;

[0010] A cavity is formed between the motor rear cover and the controller rear cover, and the cavity can be used to install control elements of the generator assembly.

[0011] Furthermore, a crankshaft mounting hole is provided on the engine cylinder block, a convex ring is provided on the extending section, a groove is formed between the convex ring and the shaft body, and the edge of the crankshaft mounting hole is embedded in the groove.

[0012] Furthermore, an oil seal is provided at one end of the engine cylinder body facing the motor, and a sealing lip of the oil seal abuts against an outer wall of the convex ring.

[0013] Furthermore, the motor rotor support comprises a cylinder and a web disposed in the cylinder, the web is provided with a fitting hole sleeved on the extending section, and the web and the convex ring are connected by a first connecting member;

[0014] The portion of the web where the sleeve hole is provided is recessed toward one side of the engine cylinder block relative to the edge of the web.

[0015] Furthermore, the motor rotor support comprises a cylinder and a web disposed in the cylinder, and the web is provided with a sleeve hole sleeved on the extending section;

[0016] A shaft shoulder is arranged on the extended section, and the edge of the sleeve hole is sandwiched between the shaft shoulder and the inner ring of the bearing.

[0017] Furthermore, the shaft hole is arranged in the middle of the motor rear cover, and the middle of the motor rear cover is recessed into the motor housing relative to the edge of the motor rear cover.

[0018] Furthermore, a sealing ring is provided between the bearing and the extending section to seal the gap between the bearing and the extending section; or,

[0019] A sealing ring is provided between the bearing and the motor rear cover to seal the gap between the bearing and the motor rear cover.

[0020] Furthermore, a water jacket is provided in the motor housing of the motor, and a flow channel for a heat exchange fluid to flow through is formed between the water jacket and the motor housing;

[0021] The motor stator of the motor is pressed into the water jacket, and the motor rotor of the motor is pressed into the motor rotor bracket.

[0022] Furthermore, the engine block and the motor housing are connected via a second connecting member, a sealant is provided between the engine block and the motor housing to seal the gap therebetween, and a sealant is provided between the engine block and the water jacket to seal the gap therebetween;

[0023] The motor housing, the motor rear cover and the controller rear cover are connected by a third connecting piece, a sealant is provided between the motor housing and the motor rear cover to seal the gap therebetween, a sealant is provided between the water jacket and the motor rear cover to seal the gap therebetween, and a sealant is provided between the motor rear cover and the controller rear cover to seal the gap therebetween.

[0024] Compared with the prior art, the utility model has the following advantages:

[0025] Compared with the existing structure, the generator assembly described in the utility model can omit parts such as flywheels and shock absorbers, so that the overall weight is lighter and the cost is lower. The space in the axial direction of the engine crankshaft is larger, and the controller rear cover can be arranged, and the control elements of the generator assembly are integrated on the generator assembly, with a high degree of integration. The engine crankshaft is connected to the motor rotor bracket, and the extended section is inserted into the bearing on the motor rear cover, which can stably support the extended section, which is beneficial to improving the stability of the engine crankshaft rotation, thereby improving the NVH (Noise, Vibration, Harshness) performance of the generator assembly.

[0026] In addition, embedding the edge of the crankshaft mounting hole in the groove on the crankshaft can better prevent the oil in the engine cylinder from leaking out from the crankshaft mounting hole. The oil seal can better seal the gap between the engine cylinder and the engine crankshaft, thereby better preventing the oil in the engine cylinder from leaking out from the crankshaft mounting hole.

[0027] In addition, a web is provided on the motor rotor bracket, and the web and the convex ring are connected through a first connecting member, which is conducive to improving the connection reliability between the motor rotor bracket and the engine crankshaft, and the portion of the web provided with the set hole is recessed toward the engine cylinder body relative to the edge, which is convenient for recessing the central portion of the motor rear cover, and the overall structure is compact, which is conducive to providing a larger installation space for the control element of the generator assembly. The web is provided on the motor rotor bracket, so that the edge of the set hole is sandwiched between the shaft shoulder and the inner ring of the bearing, fewer parts are required, and installation is more convenient.

[0028] As for making the middle part of the motor rear cover concave into the motor housing relative to the edge of the motor rear cover, the overall structure is compact, which can provide a larger installation space for the control components of the generator assembly. A sealing ring is arranged between the inner ring and the extension section of the bearing, which can better seal the gap between the bearing and the engine crankshaft and better prevent abnormal noise in the gap. A water jacket is arranged in the motor housing, and a flow channel is formed between the motor housing and the water jacket. The motor housing and the water jacket are arranged separately, which is convenient for processing and can better reduce the processing cost.

[0029] At the same time, sealants are set between the motor housing and between the engine cylinder block and the water jacket, sealants are set between the motor housing and the motor rear cover and between the water jacket and the motor rear cover, and sealants are set between the motor rear cover and the controller rear cover. All of these are for better sealing of the motor components, which is beneficial to the safe and reliable operation of the motor and can extend the service life of the motor.

[0030] Another object of the present invention is to provide a vehicle, on which the generator assembly as described above is provided.

[0031] The vehicle described in the utility model, by applying the aforementioned generator assembly, is conducive to reducing the total weight and production cost of the vehicle. It has a high degree of integration, is more convenient to arrange on the vehicle, and has a high stability in the rotation of the engine crankshaft, which is conducive to improving the NVH (Noise, Vibration, Harshness) performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0033] Figure 1 This is a schematic structural diagram of the generator assembly according to the first embodiment of the utility model;

[0034] Figure 2 This is a front view of the generator assembly described in Embodiment 1 of the present utility model;

[0035] Figure 3 For along Figure 2 Sectional view along line AA;

[0036] Figure 4 It is a cross-sectional view of the generator assembly described in the second embodiment of the utility model;

[0037] Figure 5 This is a schematic diagram of the structure of the motor according to the first embodiment of the present utility model;

[0038] Figure 6 This is a schematic structural diagram of the engine cylinder block described in Example 1 of the utility model.

[0039] Description of reference numerals:

[0040] 1. Engine; 101. Engine cylinder block; 1011. Upper cylinder block; 1012. Lower cylinder block; 1013. Crankshaft mounting hole; 102. Oil seal; 1021. Fourth connecting piece; 103. Engine crankshaft; 1031. Shaft body; 1032. Extending section; 10321. Convex ring; 10322. Shaft shoulder; 104. Bearing; 105. Crankshaft fixing piece; 106. Fifth connecting piece;

[0041] 2. Motor; 201. Motor housing; 2011. Second connecting piece; 2012. Third connecting piece; 2013. Sealant; 202. Motor rear cover; 2021. Shaft hole; 203. Motor rotor bracket; 2031. Cylinder; 2032. Web; 2033. First connecting piece; 204. Motor stator; 205. Motor rotor; 206. Bearing; 207. Sealing ring; 208. Water jacket; 209. Flow channel;

[0042] 3. Controller back cover; 301. Cavity. DETAILED DESCRIPTION

[0043] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0046] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0047] Embodiment 1

[0048] The present embodiment relates to a generator assembly, which has a relatively light overall weight, a relatively low cost, occupies a relatively small space in the axial direction of the engine crankshaft 103, has a relatively high degree of integration, has a high degree of stability in the rotation of the engine crankshaft 103, and has good practicality.

[0049] Based on the above design concept, an exemplary structure of the generator assembly of this embodiment is as follows: Figure 1-Figure 3As shown in the figure, the generator assembly mainly includes an engine 1, a motor 2 and a controller back cover 3, wherein; the engine 1 includes an engine cylinder block 101 and an engine crankshaft 103 rotatably arranged on the engine cylinder block 101, the engine crankshaft 103 includes a shaft body 1031, and an extending section 1032 arranged at one end of the shaft body 1031, and the extending section 1032 is located outside the engine cylinder block 101.

[0050] The motor rotor bracket 203 of the motor 2 is sleeved on the extension section 1032, and the motor rear cover 202 of the motor 2 is provided with an axial hole 2021, and a bearing 206 is provided in the axial hole 2021. The extension section 1032 is passed through the bearing 206, and a cavity 301 is formed between the motor rear cover 202 and the controller rear cover 3, and the cavity 301 can be used to install the control elements of the generator assembly.

[0051] In a preferred embodiment, Figure 3 As shown, a weight-reducing hole is formed in the extension section 1032, so that the extension section 1032 is annular and cylindrical, which can achieve a good weight-reducing effect. The extension section 1032 provided here is longer in length than the existing engine crankshaft 103, so that it is easier to be supported by the motor rear cover 202.

[0052] As a preferred embodiment, the engine cylinder block 101 is provided with a crankshaft mounting hole 1013, the extension section 1032 is provided with a convex ring 10321, a groove is formed between the convex ring 10321 and the shaft body 1031, and the edge of the crankshaft mounting hole 1013 is embedded in the groove. In order to better understand this embodiment, the structure of the engine cylinder block 101 is briefly described here. The structure of the engine cylinder block 101 can refer to the existing structure, which includes an upper cylinder block 1011 and a lower cylinder block 1012, and also includes a crankshaft fixing member 105 for mounting the engine crankshaft 103 on the upper cylinder block 1011.

[0053] A crankshaft mounting hole 1013 is formed between the upper cylinder block 1011 and the crankshaft fixing member 105, so that the edge of the crankshaft mounting hole 1013 is divided into an upper edge located on the upper cylinder block 1011 and a lower edge located on the crankshaft fixing member 105. The portion of the engine crankshaft 103 provided with the groove is supported by the bearing bush 104 in the crankshaft mounting hole 1013.

[0054] Specifically, Figure 3 and Figure 6As shown, the groove portion on the engine crankshaft 103 is embedded with a bearing 104, and the two bearings 104 are buckled together to form a ring shape, which covers the installation shaft diameter of the groove portion. The aforementioned convex ring 10321 is arranged around the entire circumference of the extended section 1032, so that the groove is also ring-shaped, and the upper edge on the upper cylinder body 1011 and the lower edge on the crankshaft fixing member 105 are buckled and clamped on the bearing 104 position, and are both embedded in the groove, so that the engine crankshaft 103 is installed on the upper cylinder body 1011 by passing through the fifth connecting member 106 of the crankshaft fixing member 105, and then the upper cylinder body 1011 and the lower cylinder body 1012 can be connected.

[0055] In the above structure, the fifth connecting member 106 can be, for example, an existing bolt or screw. For example, in this embodiment, there are two fifth connecting members 106, which are respectively disposed on both sides of the crankshaft mounting hole 1013, and each fifth connecting member 106 is connected to the upper cylinder block 1011 through the crankshaft fixing member 105. In addition, the edge of the crankshaft mounting hole 1013 is embedded in the groove on the crankshaft, which can better prevent the oil in the engine cylinder block 101 from leaking from the crankshaft mounting hole 1013.

[0056] As a preferred embodiment, an oil seal 102 is provided at one end of the engine block 101 facing the motor 2, and the sealing lip of the oil seal 102 abuts against the outer wall of the convex ring 10321. In this embodiment, the oil seal 102 is generally in a sheet shape, and a plurality of mounting holes are provided at the edge of the oil seal 102. The plurality of mounting holes are arranged at intervals in the circumferential direction of the oil seal 102, so that the oil seal 102 can be fixed to the engine block 101 by a fourth connecting member 1021 passing through each mounting hole. Here, the number of mounting holes is not specifically limited, and the fourth connecting member 1021 is preferably an existing bolt or screw.

[0057] Specifically, a sealing lip is provided at the center of the oil seal 102, and a through hole is formed at the center of the sealing lip. After the oil seal 102 is installed on the engine block 101, the sealing lip can press against the outer wall of the convex ring 10321, thereby better sealing the gap between the engine block 101 and the engine crankshaft 103, and better preventing the oil in the engine block 101 from leaking from the crankshaft mounting hole 1013.

[0058] As a preferred embodiment, still refer to Figure 3 As shown, the motor rotor bracket 203 includes a cylinder 2031 and a web 2032 arranged in the cylinder 2031. The cylinder 2031 and the web 2032 are an integrally formed structure. The end of the cylinder 2031 facing the engine 1 is provided with a flange, which extends radially outward along the cylinder 2031. It can limit the installation position of the motor rotor 205 and prevent the motor rotor 205 from falling out.

[0059] The web 2032 is provided with a fitting hole that is fitted on the extending section 1032, wherein the cylinder 2031 is in the shape of a circular column, the web 2032 is a plate-like structure, which is located inside the cylinder 2031, and the edge of the web 2032 is connected to the inner wall of the cylinder 2031. The center of the web 2032 is provided with a fitting hole, so that the aforementioned extending section 1032 can be inserted into the fitting hole.

[0060] In order to improve the reliability of the connection between the engine crankshaft 103 and the motor rotor bracket 203, the portion of the web 2032 provided with the fitting hole is recessed toward the engine cylinder block 101 relative to the edge. For example, in this embodiment, the middle portion of the web 2032 is formed as a connecting plate with the fitting hole, so that the shape of the web 2032 is approximately an inverted bowl shape.

[0061] A plurality of first connection holes are provided on the connection plate, and the plurality of first connection holes are arranged at circumferential intervals of the fitting holes. Connection holes corresponding to the first connection holes are provided on the convex ring 10321, so that the web 2032 and the convex ring 10321 can be connected by the first connection member 2033 passing through the first connection hole.

[0062] In a preferred embodiment, the thickness of the connecting plate is thicker than the thickness of the rest of the web 2032, so as to better ensure the structural strength of the motor rotor bracket 203, thereby improving the connection reliability between the motor rotor bracket 203 and the engine crankshaft 103. Here, the number of the first connecting holes is not specifically limited, and the first connecting member 2033 can be, for example, an existing bolt or screw.

[0063] In the above structure, a web 2032 is provided on the motor rotor bracket 203, and the web 2032 and the convex ring 10321 are connected by a first connecting member 2033, which is beneficial to improving the connection reliability between the motor rotor bracket 203 and the engine crankshaft 103, and the portion of the web 2032 provided with the fitting hole is recessed toward the engine cylinder body 101 side relative to the edge, so as to facilitate the recessing of the central portion of the motor rear cover 202. The overall structure is compact, which is beneficial to providing a larger installation space for the control elements of the generator assembly.

[0064] In a preferred embodiment, Figure 5 As shown, a plurality of weight-reducing holes are provided on the web 2032, and the plurality of weight-reducing holes are arranged at circumferential intervals of the set holes, and each weight-reducing hole is in a long strip shape, so as to play a good weight-reducing role, and cannot affect the overall structural strength of the motor rotor bracket 203. It should be understood that the number of weight-reducing holes can be set according to actual needs, and is not specifically limited in this embodiment, and the shape of the weight-reducing holes can also be set to other shapes according to needs, such as round, square, triangle, etc.

[0065] As a preferred embodiment, the aforementioned shaft hole 2021 is arranged in the middle of the motor rear cover 202, the bearing 206 is installed in the shaft hole 2021, and the aforementioned extension section 1032 is inserted into the shaft hole 2021, which can stably support the extension section 1032, thereby helping to improve the stability of the rotation of the engine crankshaft 103 and improve the NVH performance.

[0066] In a preferred embodiment, the middle of the motor rear cover 202 is recessed into the motor housing 201 relative to the edge of the motor rear cover 202, that is, the portion of the motor rear cover 202 provided with the shaft hole 2021 is recessed into the motor housing 201. Figure 3 In the figure, the middle part of the motor rear cover 202 can be embedded in the space of the belly plate 2032 and the motor rotor bracket 203, which can make full use of the space inside the motor rotor bracket 203, making the overall structure compact, which is conducive to shortening the axial dimension, providing a larger installation space for the control elements of the generator assembly, and facilitating the arrangement of components in the vehicle cabin.

[0067] As a preferred embodiment, a sealing ring 207 is provided between the bearing 206 and the extension section 1032 to seal the gap between the bearing 206 and the extension section 1032. Figure 3 As shown, the outer ring of the bearing 206 is interference fit with the motor rear cover 202, the inner ring of the bearing 206 and the extended section 1032 are clearance fit, and a sealing ring 207 is provided between the inner ring of the bearing 206 and the extended section 1032, thereby better sealing the gap between the bearing 206 and the engine crankshaft 103 and better preventing abnormal noise in the gap area.

[0068] In a preferred embodiment, there are multiple sealing rings 207, which are arranged at axial intervals along the extension section 1032 to achieve a better sealing effect. In this embodiment, there are two sealing rings 207. Of course, it is also feasible to set the number of sealing rings 207 to other values, such as one, three, four, five, etc.

[0069] However, it should be understood that in addition to this, reference can also be made to Figure 4 As shown in FIG. 2 , a sealing ring 207 may be further provided between the bearing 206 and the motor rear cover 202 to seal the gap between the bearing 206 and the motor rear cover 202. At this time, the outer ring of the bearing 206 and the motor rear cover 202 are clearance-fitted, a sealing ring 207 is provided between the outer ring of the bearing 206 and the motor rear cover 202, and the inner ring of the bearing 206 and the extension section 1032 are interference-fitted.

[0070] As a preferred embodiment, a water jacket 208 is provided in the motor housing 201 of the motor 2, and a flow channel 209 for a heat exchange fluid to flow through is formed between the water jacket 208 and the motor housing 201. In this embodiment, the water jacket 208 is in a cylindrical shape, and the flow channel 209 is formed on the outer wall of the water jacket 208. The water jacket 208 and the motor housing 201 are preferably connected by welding, and the inlet and outlet of the flow channel 209 are reserved on the motor housing 201. When used in a vehicle, it is convenient to connect with the coolant circulation system on the vehicle, so as to facilitate heat dissipation of the motor 2.

[0071] In this structure, a water jacket 208 is arranged in the motor housing 201, and a flow channel 209 is formed between the motor housing 201 and the water jacket 208. Compared with the existing method of directly forming the flow channel 209 in the motor housing 201, the motor housing 201 and the water jacket 208 are arranged separately, which is convenient for processing and can effectively reduce the processing cost.

[0072] In a preferred embodiment, the motor stator 204 of the motor 2 is press-fitted into the water jacket 208, and the motor rotor 205 of the motor 2 is press-fitted onto the motor rotor bracket 203. When press-fitting, hot pressing can be adopted, so that a press machine of smaller specifications can be used to complete the press-fitting, saving time and labor. The structures of the motor stator 204 and the motor rotor 205 can refer to the structures in the prior art, and will not be described in detail in this embodiment.

[0073] As a preferred embodiment, the engine block 101 and the motor housing 201 are connected via a second connecting member 2011. For example, in this embodiment, the second connecting holes on the engine block 101 correspond to the second connecting holes on the motor housing 201 one by one. There are multiple second connecting holes, which are arranged at circumferential intervals on the motor housing 201, so that the motor housing 201 and the engine block 101 can be connected via the second connecting member 2011 passing through each second connecting hole. In this embodiment, the number of the second connecting holes is not specifically limited, and the second connecting member 2011 preferably uses an existing bolt pair.

[0074] In order to improve the sealing effect, a sealant 2013 is provided between the engine block 101 and the motor housing 201 to seal the gap therebetween, and a sealant 2013 is provided between the engine block 101 and the water jacket 208 to seal the gap therebetween, which can play a good sealing role and better protect the various components in the motor 2. Specifically, the shape of the sealant 2013 can be as follows: Figure 5 As shown in FIG. 2 , it is arranged around the entire circumference of the motor housing 201 .

[0075] In a preferred embodiment, the motor housing 201, the motor back cover 202 and the controller back cover 3 are connected by a third connecting member 2012. For example, in this embodiment, the third connecting holes on the motor housing 201, the motor back cover 202 and the controller back cover 3 correspond to each other one by one, and the number of the third connecting holes is multiple, and the multiple third connecting holes are arranged at a circumferential spacing on the motor back cover 202, so that the motor housing 201, the motor back cover 202 and the controller back cover 3 can be connected by the third connecting member 2012 that passes through the third connecting holes on the three. Here, the number of the third connecting holes is not specifically limited, and the third connecting member 2012 preferably adopts an existing bolt pair.

[0076] In order to improve the sealing effect, a sealant 2013 is provided between the motor housing 201 and the motor back cover 202 to seal the gap therebetween, and a sealant 2013 is provided between the water jacket 208 and the motor back cover 202 to seal the gap therebetween, and a sealant 2013 is provided between the motor back cover 202 and the controller back cover 3 to seal the gap therebetween, which can further better protect the various components in the motor 2.

[0077] In the above structure, sealant 2013 is set between the motor housing 201 and between the engine cylinder block 101 and the water jacket 208, sealant 2013 is set between the motor housing 201 and the motor rear cover 202 and between the water jacket 208 and the motor rear cover 202, and sealant 2013 is set between the motor rear cover 202 and the controller rear cover 3, all of which are for better sealing the parts of the motor 2, and can better prevent dust and water from entering the interior of the motor 2, which is beneficial to the safe and reliable operation of the motor 2 and can extend the service life of the motor 2.

[0078] The generator assembly described in the utility model, the engine 1 can make the motor 2 generate electric energy, and the motor 2 can start the engine 1. Compared with the existing structure, the flywheel and the shock absorber and other parts can be omitted, so that the overall weight is lighter and the cost is lower. The space in the axial direction of the engine crankshaft 103 is larger, and the controller back cover 3 can be arranged. The control elements of the generator assembly are integrated on the generator assembly, and the integration is high. It is convenient to arrange on the vehicle, which is convenient for the arrangement of parts in the engine compartment of the vehicle. Since the flywheel and the shock absorber and other parts are omitted, the number of parts is reduced, and the failure rate can be reduced, which is conducive to the safe and reliable operation of the generator assembly.

[0079] In addition, the engine crankshaft 103 is connected to the motor rotor bracket 203, and the extension section 1032 is inserted into the bearing 206 on the motor rear cover 202, which can stably support the extension section 1032 and position it more accurately, which is beneficial to improving the stability of the rotation of the engine crankshaft 103.

[0080] Embodiment 2

[0081] This embodiment relates to a generator assembly, such as Figure 4 As shown, the generator assembly has substantially the same structure as the generator assembly of the first embodiment. In this embodiment, the motor rotor bracket 203 also includes a cylinder 2031 and a web 2032 disposed in the cylinder 2031. The web 2032 is provided with a fitting hole that is sleeved on the extending section 1032. The difference is that the center portion of the web 2032 is not recessed toward the side where the engine 1 is disposed.

[0082] Specifically, in the circumferential direction of the sleeve hole, the edge of the sleeve hole is equivalent to the thickness of the web 2032 being thickened, and both sides of the web 2032 are thickened to better enhance the structural strength of the sleeve hole portion of the motor rotor bracket 203.

[0083] In addition, in this embodiment, a shaft shoulder 10322 is provided on the extending section 1032 , and the shaft shoulder 10322 can accurately define the installation position of the motor rotor bracket 203 , and the edge of the sleeve hole is sandwiched between the shaft shoulder 10322 and the inner ring of the bearing 206 .

[0084] Specifically, after the motor rotor bracket 203 is fitted onto the extension section 1032 through the fitting hole, when the motor rear cover 202 is installed, the inner ring of the bearing 206 can be pressed against the portion of the web 2032 provided with the fitting hole, thereby limiting the axial position of the motor rotor bracket 203 in the engine crankshaft 103, which is conducive to ensuring that the motor rotor bracket 203 is smoothly installed in place. In order to ensure that the motor rotor bracket 203 rotates smoothly with the engine crankshaft 103, the web 2032 and the extension section 1032 can be connected by a flat key or a spline.

[0085] In the generator assembly of this embodiment, a web 2032 is provided on the motor rotor bracket 203, so that the edge of the sleeve hole is clamped between the shaft shoulder 10322 and the inner ring of the bearing 206. There is no need to provide the first connecting member 2033 in the first embodiment, so there are fewer parts, lighter weight, lower cost, and it is easier to install.

[0086] Embodiment 3

[0087] This embodiment relates to a vehicle, on which is provided a generator assembly as in the first or second embodiment.

[0088] The vehicle of this embodiment, by applying the generator assembly of the first or second embodiment, has the same beneficial effects as the generator assembly of the first or second embodiment relative to the prior art, which will not be repeated here.

[0089] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A generator assembly, characterized in that: It comprises an engine (1), a motor (2) and a controller back cover (3); The engine (1) comprises an engine cylinder block (101) and an engine crankshaft (103) rotatably arranged on the engine cylinder block (101); the engine crankshaft (103) comprises a shaft body (1031) and an extending section (1032) arranged at one end of the shaft body (1031); the extending section (1032) is located outside the engine cylinder block (101); The motor rotor support (203) of the motor (2) is connected to the extension section (1032); the motor rear cover (202) of the motor (2) is provided with an axial hole (2021); a bearing (206) is provided in the axial hole (2021); and the extension section (1032) is inserted into the bearing (206); A cavity (301) is formed between the motor rear cover (202) and the controller rear cover (3), and the cavity (301) can be used to install control elements of the generator assembly.

2. The generator assembly according to claim 1, characterized in that: The engine cylinder block (101) is provided with a crankshaft mounting hole (1013), the extended section (1032) is provided with a convex ring (10321), a groove is formed between the convex ring (10321) and the shaft body (1031), and the edge of the crankshaft mounting hole (1013) is embedded in the groove.

3. The generator assembly according to claim 2, characterized in that: An oil seal (102) is provided at one end of the engine cylinder body (101) facing the motor (2), and a sealing lip of the oil seal (102) abuts against the outer wall of the convex ring (10321).

4. The generator assembly according to claim 2, characterized in that: The motor rotor support (203) comprises a cylinder (2031) and a web (2032) disposed in the cylinder (2031), the web (2032) being provided with a sleeve hole sleeved on the extending section (1032), and the web (2032) and the convex ring (10321) being connected via a first connecting member (2033); The portion of the web (2032) where the sleeve hole is provided is recessed toward one side of the engine cylinder block (101) relative to the edge of the web (2032).

5. The generator assembly according to claim 2, characterized in that: The motor rotor support (203) comprises a cylinder (2031) and a web (2032) arranged in the cylinder (2031), wherein the web (2032) is provided with a sleeve hole sleeved on the extending section (1032); The extending section (1032) is provided with a shaft shoulder (10322), and the edge of the sleeve hole is sandwiched between the shaft shoulder (10322) and the inner ring of the bearing (206).

6. The generator assembly according to claim 1, characterized in that: The shaft hole (2021) is arranged in the middle of the motor rear cover (202), and the middle of the motor rear cover (202) is recessed into the motor housing (201) of the motor (2) relative to the edge of the motor rear cover (202).

7. The generator assembly according to claim 1, characterized in that: A sealing ring (207) is provided between the bearing (206) and the extending section (1032) to seal the gap between the bearing (206) and the extending section (1032); or, A sealing ring (207) is provided between the bearing (206) and the motor rear cover (202) to seal the gap between the bearing (206) and the motor rear cover (202).

8. The generator assembly according to any one of claims 1 to 7, characterized in that: A water jacket (208) is provided in the motor housing (201) of the motor (2), and a flow channel (209) for a heat exchange fluid to flow through is formed between the water jacket (208) and the motor housing (201); The motor stator (204) of the motor (2) is pressed into the water jacket (208), and the motor rotor (205) of the motor (2) is pressed into the motor rotor bracket (203).

9. The generator assembly according to claim 8, characterized in that: The engine cylinder block (101) and the motor housing (201) are connected via a second connecting member (2011); a sealant (2013) is provided between the engine cylinder block (101) and the motor housing (201) to seal a gap therebetween; and a sealant (2013) is provided between the engine cylinder block (101) and the water jacket (208) to seal a gap therebetween; The motor housing (201), the motor rear cover (202) and the controller rear cover (3) are connected via a third connecting member (2012); a sealant (2013) is provided between the motor housing (201) and the motor rear cover (202) to seal the gap therebetween; a sealant (2013) is provided between the water jacket (208) and the motor rear cover (202) to seal the gap therebetween; and a sealant (2013) is provided between the motor rear cover (202) and the controller rear cover (3) to seal the gap therebetween.

10. A vehicle, characterized in that: The vehicle is provided with a generator assembly according to any one of claims 1-9.

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