Engine and motor integrated device and vehicle

Abstract

The utility model provides an engine motor integration device and a vehicle, the engine motor integration device comprises an engine, a motor and a controller rear cover, the engine comprises an engine cylinder body and an engine crankshaft rotatably arranged on the engine cylinder body, the engine crankshaft comprises a shaft body main body, the overhanging section is arranged at one end of the shaft body main body and is positioned outside an engine cylinder body; a motor rotor support of the motor is connected to the outward extending section, a shaft hole is formed in a motor rear cover of the motor, a bearing is arranged in the shaft hole, the center shaft penetrates through the bearing, 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 engine and motor integrated device. The engine and motor integrated device 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 an engine-motor integrated device. Meanwhile, the utility model also relates to a vehicle using the engine-motor integrated device. Background Art

[0002] Electric machines can function as both motors and generators, which are two opposite but related devices responsible for converting electrical energy into mechanical energy and mechanical energy into electrical energy, respectively.

[0003] An electric motor is a device that converts electrical energy into mechanical energy. It uses an energized coil (stator winding) to generate a rotating magnetic field and act on the rotor (such as a squirrel cage closed aluminum frame), and the motor rotates through the magneto-electrodynamic rotation torque.

[0004] A generator is a mechanical device that converts mechanical energy into electrical energy. It can be driven by a turbine, steam turbine, engine (internal combustion engine) or other power machinery to convert the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy, and then converted into electrical energy by the generator.

[0005] An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines (gasoline engines, etc.), external combustion engines (Stirling engines, steam engines, etc.), etc. Among them, internal combustion engines convert chemical energy into mechanical energy, and external combustion engines convert heat energy generated by fuel combustion into mechanical energy.

[0006] The motor and the engine are usually connected through a flywheel and a shock absorber, which has a complex structure, a heavy overall weight, and a high cost. In addition, the existing engine-motor integrated device in which the motor and the engine are integrated together occupies a large space in the axial direction of the engine crankshaft because the flywheel and the shock absorber are integrated between the engine and the motor, making it difficult to arrange the control components of the engine-motor integrated device in the axial direction. Utility Model Content

[0007] In view of this, the utility model aims to provide an engine motor integrated device with high integration, light overall weight and low cost.

[0008] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0009] An engine-motor integrated device comprises an engine, a motor and a controller rear cover which can be assembled together, wherein;

[0010] 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;

[0011] The motor rotor support of the motor comprises a web and a central shaft arranged on one side of the web, the web is connected to the extended section, a bearing is arranged on the motor rear cover of the motor, and the central shaft is passed through the bearing;

[0012] 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 engine motor integrated device.

[0013] 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.

[0014] Furthermore, the engine cylinder block includes an upper cylinder block and a lower cylinder block; the upper cylinder block is connected to a crankshaft fixing member;

[0015] The upper cylinder block and the crankshaft fixing member surround and form the crankshaft mounting hole, and the portion of the engine crankshaft provided with the groove is supported by a bearing bush in the crankshaft mounting hole.

[0016] Furthermore, the motor rotor bracket includes a cylinder body, the web is arranged in the cylinder body, an opening is provided on the web, a concave stop is provided on the side wall of the opening, a convex stop is provided on the extending section, the convex stop and the concave stop are abutted and connected, and the web and the convex ring are connected by a first connecting piece.

[0017] Furthermore, the portion of the web where the opening is provided is recessed toward one side of the engine cylinder block relative to the edge of the web;

[0018] The portion of the motor rear cover where the bearing is provided is recessed into the motor housing relative to the edge of the motor rear cover;

[0019] The middle inclined portion of the web is parallel to the middle inclined portion of the motor rear cover.

[0020] Furthermore, a resolver is provided between the motor rotor bracket and the motor rear cover, the resolver comprising a resolver rotor and a resolver stator, the resolver rotor is provided at one end of the central axis away from the engine crankshaft, and the resolver stator is provided on the motor rear cover.

[0021] Furthermore, the resolver rotor is fixed to the central axis through a resolver rotor fixing member, and a first limiting structure is provided between the resolver rotor and the central axis, and the first limiting structure is used to limit the resolver rotor from rotating around the central axis;

[0022] The resolver stator is fixed to the motor rear cover via a resolver stator fixing member, and a second limiting structure is provided between the resolver stator and the resolver stator fixing member, and the second limiting structure is used to limit the resolver stator from rotating relative to the resolver stator fixing member.

[0023] Further, a sealing ring is provided between the bearing and the central shaft to seal the gap between the bearing and the central shaft; or,

[0024] 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.

[0025] 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;

[0026] 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.

[0027] Compared with the prior art, the utility model has the following advantages:

[0028] In the engine motor integrated device described in the utility model, the extended section of the engine crankshaft is connected to the web of the motor rotor bracket, and the central axis of the rotor bracket is inserted into the bearing on the motor rear cover, which can stably support the extended section, which is conducive to improving the stability of the engine crankshaft rotation, thereby improving the NVH (Noise, Vibration, Harshness) performance of the engine motor integrated device. Compared with the existing structure, the engine motor integrated device can omit parts such as flywheels and shock absorbers, making the overall weight lighter and the cost lower. The space in the axial direction of the engine crankshaft is larger, and the controller rear cover can be arranged, and the control components of the engine motor integrated device are integrated on the engine motor integrated device, and the integration is higher.

[0029] In addition, embedding the edge of the crankshaft mounting hole in the groove on the crankshaft can effectively prevent the oil in the engine cylinder from leaking out from the crankshaft mounting hole. By setting the crankshaft fixing parts and bearings, the installation is convenient, which is conducive to the smooth rotation of the engine crankshaft, thereby improving the NVH performance of the engine motor integrated device. In addition, the web and the convex ring are connected through the first connecting member, which is conducive to improving the connection reliability between the motor rotor bracket and the engine crankshaft. The convex stop and the concave stop are arranged to facilitate the rapid identification of the assembly position of the rotor bracket during assembly, which is conducive to improving the assembly efficiency and assembly accuracy. The part of the web with the opening is recessed relative to the edge toward the side of the engine cylinder, which is convenient for recessing the central part of the motor rear cover. The overall structure is compact, which is conducive to providing a larger installation space for the control components of the engine motor integrated device. The middle part of the motor rear cover is recessed into the motor housing relative to the edge of the motor rear cover, making the overall structure compact and providing a larger installation space for the control elements of the engine motor integrated device. The middle inclined part of the web is parallel to the middle inclined part of the motor rear cover, which is convenient for the installation of the motor rear cover and can provide a larger installation space for the control elements, facilitating the arrangement of various components in the motor.

[0030] As for the resolver, it is helpful to monitor the position, speed and rotation direction of the motor rotor. The first limit structure and the second limit structure can accurately limit the installation position of the electronic rotor and the motor stator, which is conducive to the reliable and stable operation of the resolver. A sealing ring is set between the inner ring of the bearing and the central axis or between the bearing and the rear cover of the motor, which can better seal the gap between the bearing and the rotor bracket and better prevent abnormal noise in the gap. A water jacket is set 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 set separately, which is convenient for processing and can better reduce the processing cost.

[0031] 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.

[0032] Another object of the present invention is to provide a vehicle, on which the engine-motor integrated device as described above is provided.

[0033] The vehicle described in the utility model, by applying the aforementioned engine-motor integrated device, 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

[0034] 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:

[0035] Figure 1 This is a schematic structural diagram of the engine-motor integrated device according to the first embodiment of the utility model;

[0036] Figure 2 This is a front view of the engine-motor integrated device according to the first embodiment of the utility model;

[0037] Figure 3 For along Figure 2 Sectional view along line AA;

[0038] Figure 4 This is a cross-sectional view of the engine-motor integrated device according to the first embodiment of the utility model without the resolver;

[0039] Figure 5 This is a schematic diagram of the structure of the motor according to the first embodiment of the present utility model;

[0040] Figure 6 This is a structural schematic diagram of an engine cylinder block according to Embodiment 1 of the present utility model;

[0041] Figure 7 This is a schematic diagram of the structure of the motor rear cover, motor rotor bracket and resolver assembly according to the first embodiment of the utility model;

[0042] Figure 8 This is a schematic structural diagram of the resolver stator according to the first embodiment of the utility model;

[0043] Fig. 9 This is a schematic structural diagram of the rotary transformer stator fixing member according to the first embodiment of the utility model;

[0044] Fig.10 This is a structural schematic diagram of the assembly of the motor rotor bracket and the resolver rotor according to the first embodiment of the utility model.

[0045] Description of reference numerals:

[0046] 1. Engine; 101. Engine cylinder block; 1011. Upper cylinder block; 1012. Lower cylinder block; 1013. Crankshaft mounting hole; 102. Oil seal; 1021. Fourth connecting member; 103. Engine crankshaft; 1031. Shaft body; 1032. Extending section; 10321. Convex ring; 104. Bearing; 105. Crankshaft fixing member; 106. Fifth connecting member;

[0047] 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; 2034. Concave stopper; 2035. Center axis; 20351. Sealing ring groove; 204. Motor stator; 205. Motor rotor; 206. Bearing; 207. Sealing ring; 208. Water jacket; 209. Flow channel;

[0048] 3. Controller back cover; 301. Cavity;

[0049] 401, resolver rotor; 4011, resolver rotor fixing part; 402, resolver stator; 4021, resolver stator fixing part; 40211, limit card; 4022, step. DETAILED DESCRIPTION

[0050] 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.

[0051] 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.

[0052] 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.

[0053] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0054] Embodiment 1

[0055] The present embodiment relates to an engine motor integrated device, which has a light overall weight, low cost, and is easy to assemble and disassemble. It occupies a small space in the axial direction of the engine crankshaft 103, has a high degree of integration, and the engine crankshaft 103 rotates smoothly, thereby having good practicality.

[0056] Based on the above design concept, an exemplary structure of the engine motor integrated device of this embodiment is as follows: Figures 1 to 3 As shown in , the engine-motor integrated device mainly includes an engine 1, a motor 2 and a controller back cover 3, and the engine 1, the motor 2 and the controller back cover 3 can be assembled and connected together in sequence.

[0057] The engine 1 includes an engine block 101 and an engine crankshaft 103 rotatably disposed on the engine block 101 . The engine crankshaft 103 includes a shaft body 1031 and an extension section 1032 disposed at one end of the shaft body 1031 . The extension section 1032 is located outside the engine block 101 .

[0058] In order to better understand the engine motor integrated device of this embodiment, the structure of the motor 2 is briefly described here. The motor 2 mainly includes a motor housing 201, a motor rear cover 202, a motor stator 204, a motor rotor 205, a water jacket 208 and a resolver.

[0059] The motor housing 201 is generally cylindrical and hollow inside. A receiving cavity is formed between the motor housing 201 and the motor rear cover 202 . The receiving cavity is mainly used to receive the motor stator 204 , the motor rotor 205 , the water jacket 208 and the resolver.

[0060] In this embodiment, the motor rotor bracket 203 includes a web 2032 and a central axis 2035 arranged on one side of the web 2032. The central axis 2035 is specifically arranged on the side of the web 2032 facing away from the engine crankshaft 103. The web 2032 is connected to the extension section 1032. An axial hole 2021 is provided on the motor rear cover 202 of the motor 2. A bearing 206 is provided in the axial hole 2021. The central axis 2035 is passed through the bearing 206. A cavity 301 is formed between the motor rear cover 202 and the controller rear cover 3. The cavity 301 can be used to install control elements of the engine motor integrated device.

[0061] 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. A weight-reducing hole is also formed in the central shaft 2035, so that the central shaft 2035 is annular and cylindrical, which can also achieve a good weight-reducing effect. The portion of the central shaft 2035 away from the engine crankshaft 103 is reduced in diameter relative to the portion of the central shaft 2035 close to the engine crankshaft 103, so as to facilitate the arrangement of the resolver rotor 401 described below. Two sealing ring grooves 20351 are also provided on the central shaft 2035, and the two sealing ring grooves 20351 are arranged at an axial spacing from the central shaft 2035.

[0062] As a preferred embodiment, a crankshaft mounting hole 1013 is provided on the engine cylinder block 101, a convex ring 10321 is provided on the extending section 1032, 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.

[0063] In order to better understand the present embodiment, the structure of the engine block 101 is briefly described here. The structure of the engine 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 part 105 for installing the engine crankshaft 103 on the upper cylinder block 1011.

[0064] 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.

[0065] Specifically, Figure 3 and Figure 6 As 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.

[0066] 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. Each fifth connecting member 106 passes through the crankshaft fixing member 105 and is connected to the upper cylinder block 1011. In addition, the edge of the crankshaft mounting hole 1013 is embedded in the groove on the engine crankshaft 103, which can better prevent the oil in the engine cylinder block 101 from leaking from the crankshaft mounting hole 1013.

[0067] 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.

[0068] 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.

[0069] As a preferred embodiment, still refer to Figure 3 As shown, the motor rotor bracket 203 includes a cylinder 2031, and the aforementioned web 2032 is arranged in the cylinder 2031. The cylinder 2031, the web 2032 and the center axis 2035 are an integrally formed structure. The end of the cylinder 2031 facing the engine 1 is provided with a flange, and the flange extends radially outward along the cylinder 2031, which can limit the installation position of the motor rotor 205 and prevent the motor rotor 205 from falling out.

[0070] Among them, the cylinder 2031 is in the shape of a circular column, and the web 2032 is a plate-like structure, which is located inside the cylinder 2031. The edge of the web 2032 is connected to the inner wall of the cylinder 2031, and an opening is provided in the center of the web 2032 so that the aforementioned central axis 2035 can be inserted into the opening.

[0071] Specifically, Figure 3 and Figure 5 As shown, a concave stop 2034 is provided on the side wall of the opening, and a convex stop 2035 is provided on the central axis 2035. The convex stop and the concave stop 2034 are abutted and connected, and can accurately limit the installation position of the motor rotor bracket 203 on the engine crankshaft 103.

[0072] 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 with the opening is recessed toward the engine cylinder block 101 relative to the edge. As in the present embodiment, the middle portion of the web 2032 is formed as a connecting plate with an opening, so that the shape of the web 2032 is approximately an inverted bowl shape.

[0073] 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 opening, and 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.

[0074] 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.

[0075] 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 opening is recessed relative to the edge toward the engine cylinder block 101 side, 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 engine motor integrated device.

[0076] In a preferred embodiment, the middle inclined portion of the web 2032 is parallel to the middle inclined portion of the motor rear cover 202, which facilitates the installation of the motor rear cover 202 and provides a larger installation space for the control element, facilitating the arrangement of various components in the motor 2. It should be noted that the middle inclined portion of the web 2032 is the portion connecting the middle portion and the edge portion of the web 2032, and the middle inclined portion of the motor rear cover 202 is the portion connecting the middle portion and the edge portion of the motor rear cover 202.

[0077] 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 opening, and each weight-reducing hole is in a long strip shape, so as to achieve a good weight-reducing effect, 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, triangular, etc.

[0078] As a preferred embodiment, Figures 7 to 10As shown, a resolver is provided between the motor rotor bracket 203 and the motor rear cover 202, and the resolver includes a resolver rotor 401 and a resolver stator 402. The resolver rotor 401 is provided at one end of the central axis 2035 away from the engine crankshaft 103, and the resolver stator 402 is provided on the motor rear cover 202. In addition, a resolver air gap is reserved between the resolver rotor 401 and the resolver stator 402. The specific setting value of the resolver air gap may refer to the prior art.

[0079] In this embodiment, Figure 8 The specific structure of the resolver stator 402 is shown, which includes a circular resolver stator fixing ring and a plurality of resolver stator rods arranged on the resolver stator fixing ring. The resolver stator fixing ring is provided with a step 4022. The plurality of resolver stator rods are arranged side by side, and gaps are provided between adjacent resolver stator rods.

[0080] In a preferred embodiment, the resolver stator 402 is fixed to the motor back cover 202 via a resolver stator fixing member 4021, and a second limiting structure is provided between the resolver stator 402 and the resolver stator fixing member 4021, and the second limiting structure is used to limit the rotation of the resolver stator 402 relative to the resolver stator fixing member 4021, thereby accurately limiting the installation position of the resolver stator 402 on the motor back cover 202.

[0081] Figure 8 The specific structure of the resolver stator fixing member 4021 is shown. The resolver stator fixing member 4021 is in the form of a sheet and is in the shape of an arc that is close to a circle. The resolver stator fixing member 4021 is provided with a plurality of through holes. The resolver stator fixing member 4021 can be fixed to the motor rear cover 202 by passing through the sixth connecting member in each through hole. Here, the sixth connecting member is preferably an existing bolt or screw. A notch is provided on the inner peripheral wall of the resolver stator fixing member 4021, and a limit card 40211 is provided in the notch.

[0082] After the resolver stator fixing member 4021 is connected to the motor back cover 202 through the sixth connecting member, the inner ring of the resolver stator fixing member 4021 abuts against the step 4022, thereby fixing the resolver stator 402 to the motor back cover 202. At this time, the limit card 40211 can be inserted into the limit groove on the outer peripheral wall of the resolver stator 402, thereby effectively preventing the resolver stator 402 from shaking. The limit card 40211 and the limit groove here constitute a second limit structure provided between the resolver stator 402 and the resolver stator fixing member 4021. Here, the sixth connecting member is preferably an existing bolt or screw. Fig.10 The installation structure of the resolver rotor 401 on the motor rotor bracket 203 is shown. Specifically, the resolver rotor 401 and the resolver rotor fixing member 4011 are both in annular shape, and the resolver rotor 401 is fixed to the end of the central axis 2035 away from the engine crankshaft 103.

[0083] In a preferred embodiment, the resolver rotor 401 is fixed to the central axis 2035 via a resolver rotor fixing member 4011 , and a first limiting structure is provided between the resolver rotor 401 and the central axis 2035 , and the first limiting structure is used to limit the resolver rotor 401 from rotating around the central axis 2035 .

[0084] As in this embodiment, the central shaft 2035 has an extension portion extending into the motor rear cover 202, and the extension portion is longer in the axial direction of the central shaft 2035. The resolver rotor 401 is specifically arranged on the extension portion, and the resolver rotor 401 and the extension portion can be connected via a flat key or a spline. The flat key or the spline here constitutes a first limiting structure arranged between the resolver rotor 401 and the central shaft 2035, and the resolver rotor fixing member 4011 is threadedly connected to the central shaft 2035 for overall arrangement.

[0085] It should be understood that, in this embodiment, a resolver is provided between the motor rotor bracket 203 and the motor rear cover 202, which is conducive to monitoring the position, speed and rotation direction of the motor rotor 205. However, it is also feasible not to provide a resolver. Figure 4 As shown in , the central axis 2035 is shorter in the axial direction and can be inserted into the inner ring of the bearing 206 . The rotation speed and other parameters of the electronic rotor bracket 203 can be detected by the sensor used to detect the engine crankshaft 103 on the vehicle.

[0086] 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 center shaft 2035 is inserted into the shaft hole 2021, which can stably support the center shaft 2035, thereby helping to improve the stability of the rotation of the engine crankshaft 103 and improve the NVH performance.

[0087] 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 embodiment, the middle part of the motor rear cover 202 can be embedded in the space surrounded by 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 engine motor integrated device, and facilitating the arrangement of components in the vehicle cabin.

[0088] As a preferred embodiment, a sealing ring 207 is provided between the bearing 206 and the central shaft 2035 to seal the gap between the bearing 206 and the central shaft 2035. Figure 3As shown, the outer ring of the bearing 206 is interference fit with the motor rear cover 202, the inner ring of the bearing 206 is clearance fit with the center shaft 2035, and a sealing ring 207 is provided between the inner ring of the bearing 206 and the center shaft 2035, thereby better sealing the gap between the bearing 206 and the engine crankshaft 103 and better preventing abnormal noise in the gap area.

[0089] In a preferred embodiment, there are multiple sealing rings 207, which are arranged at axial intervals along the central axis 2035 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.

[0090] 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 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. At this time, the outer ring of the bearing 206 and the motor rear cover 202 are clearance-fitted, the 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 central shaft 2035 are interference-fitted.

[0091] 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 to dissipate heat for the motor 2.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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 .

[0096] 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.

[0097] 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.

[0098] 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.

[0099] The engine motor integrated device 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 engine motor integrated device are integrated on the engine motor integrated device, and the integration is high. It is convenient to arrange on the vehicle, which is convenient for the arrangement of parts in the cabin 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 to a good extent, which is conducive to the safe and reliable operation of the engine motor integrated device.

[0100] In addition, the engine crankshaft 103 is connected to the motor rotor bracket 203, and the center shaft 2035 is inserted into the bearing 206 on the motor rear cover 202, which can stably support the center shaft 2035 and position it more accurately, which is beneficial to improving the stability of the rotation of the engine crankshaft 103.

[0101] Embodiment 2

[0102] This embodiment relates to a vehicle, on which is provided the engine-motor integration device as in the first embodiment.

[0103] The vehicle of this embodiment, by applying the engine-motor integrated device of the first embodiment, has the same beneficial effects as the engine-motor integrated device of the first embodiment relative to the prior art, which will not be repeated here.

[0104] 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. An engine motor integrated device, characterized in that: It comprises an engine (1), a motor (2) and a controller back cover (3) which can be assembled together; 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) comprises a web (2032) and a central shaft (2035) arranged on one side of the web (2032), the web (2032) being connected to the extending section (1032), a bearing (206) being arranged on the motor rear cover (202) of the motor (2), and the central shaft (2035) being passed through 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 engine motor integrated device.

2. The engine-motor integrated device 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 engine-motor integrated device according to claim 2, characterized in that: The engine cylinder block (101) comprises an upper cylinder block (1011) and a lower cylinder block (1012); a crankshaft fixing member (105) is connected to the upper cylinder block (1011); The upper cylinder block (1011) and the crankshaft fixing member (105) are configured to form the crankshaft mounting hole (1013), and the portion of the engine crankshaft (103) provided with the groove is supported by a bearing bush (104) in the crankshaft mounting hole (1013).

4. The engine-motor integrated device according to claim 2, characterized in that: The motor rotor support (203) comprises a cylinder (2031), the web (2032) is arranged in the cylinder (2031), an opening is provided on the web (2032), a concave stop (2034) is provided on the side wall of the opening, a convex stop is provided on the extending section (1032), the convex stop and the concave stop (2034) are abutted and connected, and the web (2032) and the convex ring (10321) are connected via a first connecting member (2033).

5. The engine-motor integrated device according to claim 4, characterized in that: The portion of the web (2032) where the opening is provided is recessed toward one side of the engine cylinder block (101) relative to the edge of the web (2032); The portion of the motor rear cover (202) where the bearing (206) is provided is recessed into the motor housing (201) of the motor (2) relative to the edge of the motor rear cover (202); The middle inclined portion of the web (2032) is parallel to the middle inclined portion of the motor rear cover (202).

6. The engine-motor integrated device according to claim 1, characterized in that: A resolver is provided between the motor rotor support (203) and the motor rear cover (202), the resolver comprising a resolver rotor (401) and a resolver stator (402), the resolver rotor (401) being provided at one end of the central axis (2035) away from the engine crankshaft (103), and the resolver stator (402) being provided on the motor rear cover (202).

7. The engine-motor integrated device according to claim 6, characterized in that: The resolver rotor (401) is fixed to the central axis (2035) via a resolver rotor fixing member (4011); a first limiting structure is provided between the resolver rotor (401) and the central axis (2035); the first limiting structure is used to limit the resolver rotor (401) from rotating around the central axis (2035); The resolver stator (402) is fixed to the motor rear cover (202) via a resolver stator fixing member (4021), and a second limiting structure is provided between the resolver stator (402) and the resolver stator fixing member (4021), the second limiting structure being used to limit the resolver stator (402) from rotating relative to the resolver stator fixing member (4021).

8. The engine-motor integrated device according to claim 1, characterized in that: A sealing ring (207) is provided between the bearing (206) and the central shaft (2035) to seal the gap between the bearing (206) and the central shaft (2035); 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).

9. The engine-motor integrated device according to any one of claims 1 to 8, 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).

10. A vehicle, characterized in that: The vehicle is provided with the engine-motor integration device according to any one of claims 1-9.

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