CN214564662U - Range extender assembly for range-extended electric automobile - Google Patents

Abstract

The application discloses a range extender assembly of a range-extending electric automobile, which belongs to the technical field of range extenders and comprises an engine, a generator and a coupler, wherein the coupler comprises a driving disc connected with an output shaft of the engine, a driven disc connected with an input shaft of the generator and a buffer disc which is arranged between the driving disc and the driven disc and has elasticity; the end surface of the driving disc opposite to the driven disc is provided with driving teeth; the end face of the driven disc opposite to the driving disc is provided with driven teeth; the buffer disc is alternately provided with a first transmission notch for inserting the driving tooth and a second transmission notch for inserting the driven tooth along the circumferential direction of the buffer disc, the driving tooth is abutted against the outer wall of the buffer disc at the first transmission notch, the driven tooth is abutted against the outer wall of the buffer disc at the second transmission notch, and the driving tooth is meshed with the driven tooth through the buffer disc. The range extender assembly with the structure is convenient to assemble and stable in work.

Description

Range extender assembly for range-extended electric automobile

Technical Field

The application belongs to the technical field of range extenders, and particularly provides a range extender assembly of a range-extended electric vehicle.

Background

Along with the rapid development of the field of electric automobiles in recent years, the functions of the electric automobiles are more and more abundant, such as automatic driving and intelligent detection, multiple functions are used to support the use of energy, the energy of the electric automobiles is electric energy, various functions such as running of the automobiles and the like need to be realized by the electric energy, the endurance mileage of the electric automobiles is limited by the electric energy, the endurance mileage of the electric automobiles is improved in the prior art by installing a range extender, the range extender comprises an engine and a generator, an output shaft of the engine drives an input shaft of the generator to rotate, the generator can provide energy for the automobiles, when the output shaft of the engine drives the input shaft of the generator to rotate, radial deviation exists between the output shaft of the engine and the input shaft of the generator due to assembly errors and production errors, and the radial deviation between the two shafts is difficult to be directly reduced by adopting a traditional coupling connection mode that the output shaft of the engine is connected with the input shaft of the generator Influence on the transmission between the engine and the generator; in the running process of the vehicle, the range extender suffers from impact due to vehicle bumping, so that impact exists between an output shaft of the engine and an input shaft of the generator, the output shaft of the engine and the input shaft of the generator are damaged, particularly, in the starting and stopping processes of the range extender, the impact between the output shaft of the engine and the input shaft of the generator is more obvious, and the impact is transmitted to internal structures of the engine and the generator through the two shafts, so that the service life of the range extender is influenced.

SUMMERY OF THE UTILITY MODEL

The application provides a range extender assembly for a range-extended electric automobile, which can reduce the impact between the output shaft of an engine and the input shaft of a generator, avoid the impact damage to the range extender, improve the transmission stability between the engine and the generator and prolong the service life of the range extender.

The range extender assembly of the range-extending electric automobile comprises an engine, a generator and a coupler, wherein the coupler comprises a driving disc connected with an output shaft of the engine, a driven disc connected with an input shaft of the generator and a buffer disc which is arranged between the driving disc and the driven disc and has elasticity; the end surface of the driving disc opposite to the driven disc is provided with driving teeth; the end face of the driven disc opposite to the driving disc is provided with driven teeth; the buffer disc is alternately provided with a first transmission notch for inserting the driving tooth and a second transmission notch for inserting the driven tooth along the circumferential direction of the buffer disc, the driving tooth is abutted against the outer wall of the buffer disc at the first transmission notch, the driven tooth is abutted against the outer wall of the buffer disc at the second transmission notch, the driving tooth is meshed with the driven tooth through the buffer disc, so that the output shaft of the engine can drive the input shaft of the generator to rotate through the coupler, the engine transmits power to the generator through the coupler, and the generator generates electric energy to be used by a vehicle.

In one embodiment of the application, the cross section of the driving tooth is in a sector ring shape, the cross section of the driven tooth is the same as that of the driving tooth, the radius direction of the cross section of the driving tooth faces to the circle center of the driving disc, and the radius direction of the cross section of the driven tooth faces to the circle center of the driven disc; when the driving disc, the buffer disc and the driven disc are mutually connected and matched to form the coupler, the inner circular arcs of the cross sections of the driving teeth and the inner circular arcs of the cross sections of the driven teeth are located on the same circle.

In one embodiment of the present application, the first transmission notch and the second transmission notch are uniformly spaced along the circumferential direction of the buffer disc.

In one embodiment of the present application, the driving disk abuts against one end of the buffer disk, and the driven disk abuts against the other end of the buffer disk.

In an embodiment of the application, the end face of the driven disc opposite to the driving disc is provided with a mounting boss, the extension direction of the mounting boss is the same as the axis direction of the driven disc, the buffer disc is provided with a mounting hole for the mounting boss to be inserted, and the mounting boss is provided with an output hole for the input shaft of the generator to be inserted along the axis direction of the driven disc.

In one embodiment of the present application, the input shaft of the generator is a splined shaft and the output hole is a splined hole that mates with the input shaft of the generator.

In one embodiment of the present application, the driving disk is provided with a plurality of driving teeth at intervals in a circumferential direction thereof, and the driven disk is provided with a same number of driven teeth at intervals in the circumferential direction thereof.

In one embodiment of the present application, the driving disk is provided with a fixing through-hole through which a bolt can fix the driving disk to a flywheel connected to an output shaft of the engine.

In one embodiment of the present application, the buffer disc is an integral rubber buffer disc.

In one embodiment of the application, the engine is provided with a first flange and the generator is provided with a second flange bolted to the first flange to secure the generator to the engine.

As can be understood by those skilled in the art, the range extender assembly of the range-extended electric vehicle described in the present application has at least the following beneficial effects:

1. the driving disc is connected with an output shaft of an engine, the driven disc is connected with an input shaft of a generator, the buffer disc is arranged between the driving disc and the driven disc, driving teeth arranged on the driving disc are inserted into first transmission gaps arranged on the buffer disc, driven teeth arranged on the driven disc are inserted into second transmission gaps arranged on the buffer disc, the first transmission gaps and the second transmission gaps are alternately arranged along the circumferential direction of the buffer disc, the driving teeth, the driven teeth and the driving teeth are meshed with the driven teeth through the buffer disc, the driving teeth can transmit power to the driven teeth, the engine can transmit power through the driving disc, the buffer disc and the driven disc and the generator, the buffer disc has elasticity, and when impact exists between the driving teeth and the driven teeth, the buffer disc can absorb impact energy, so that the impact transmitted from the driving teeth to the driven teeth or the driven teeth to the driving teeth is reduced, and the engine or the generator is prevented from being damaged, thereby prolonging the service life of the range extender.

2. The driving disc passes through the driving tooth, the cooperation of pegging graft is carried out with the buffer disk to first transmission breach, the driven disc is through driven tooth, the cooperation of pegging graft is carried out with the buffer disk to second transmission breach, the buffer disk outer wall butt of driving tooth and first transmission breach department, the buffer disk outer wall butt of driven tooth and second transmission breach department, the buffer disk is to the driving disc, the installation of driven disc has the effect of location, the buffer disk has elasticity, the driving tooth, the outer wall butt of driven tooth and transmission buffer disk, the driving tooth, do not have the clearance between driven tooth and the buffer disk, make the shaft coupling during operation, the transmission between driving disc and the driven disc is more steady, and the driving disc, the buffer disk, the cooperation of pegging graft makes the installation degree of difficulty of shaft coupling reduce of driven disc, thereby improve the production efficiency of journey extender.

3. The cross sections of the driving tooth and the driven tooth are the same and are in a sector ring shape, the inner circular arc of the cross section of the driving tooth and the inner circular arc of the cross section of the driven tooth are located on the same circle, the radius direction of the cross section of the driving tooth faces the circle center of the driving disc, the radius direction of the cross section of the driven tooth faces the circle center of the driven disc, and when the driving disc drives the driven disc to rotate, the coupler can better transmit torque, so that transmission is stable, damage of impact to the range extender is reduced, and the service life of the range extender is prolonged.

Drawings

Embodiments of the present application are described below with reference to the accompanying drawings, in which:

FIG. 1 is an assembly schematic of an exemplary embodiment of an engine, coupling, and generator;

FIG. 2 is a schematic structural view of an exemplary embodiment of a coupling;

FIG. 3 is a schematic structural view of an exemplary embodiment of the active disk of the present application;

FIG. 4 is a schematic diagram of an exemplary embodiment of a buffer tray of the present application;

FIG. 5 is a schematic block diagram of an exemplary embodiment of a driven disk in the present application;

FIG. 6 is a schematic structural view of an exemplary embodiment of a generator of the present application;

fig. 7 is a schematic structural view of an exemplary embodiment of an engine in the present application.

In the figure:

101-an engine; 102-a first flange; 103-a flywheel;

201-driving disk; 202-driving teeth; 203-fixing through holes;

301-a buffer tray; 302-first drive notch; 303-a second drive notch; 304-mounting holes;

401-driven disk; 402-driven teeth; 403-mounting a boss; 404-an output aperture;

501-a generator; 502-an input shaft; 503-second flange.

Detailed Description

It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present application, and not all embodiments of the present application, and the part of the embodiments are intended to explain the technical principles of the present application and not to limit the scope of the present application. All other embodiments that can be obtained by a person skilled in the art based on the embodiments provided in the present application without inventive effort shall still fall within the scope of protection of the present application.

It should be noted that in the description of the present application, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.

Referring to fig. 1 to 7, the range extender assembly of the range-extended electric vehicle comprises an engine 101, a generator 501 and a coupling, wherein the coupling comprises a driving disc 201 connected with an output shaft of the engine 101, a driven disc 401 connected with an input shaft 502 of the generator 501 and a buffer disc 301 which is arranged between the driving disc 201 and the driven disc 401 and has elasticity; referring to fig. 2, a driving tooth 202 is arranged on the end surface of the driving disk 201 opposite to the driven disk 401; the end face of the driven disc 401 opposite to the driving disc 201 is provided with driven teeth 402; the buffer disc 301 is alternately provided with a first transmission notch 302 for inserting the driving tooth 202 and a second transmission notch 303 for inserting the driven tooth 402 along the circumferential direction, the driving tooth 202 is abutted against the outer wall of the buffer disc 301 at the first transmission notch 302, the driven tooth 402 is abutted against the outer wall of the buffer disc 301 at the second transmission notch 303, and the driving tooth 202 is meshed with the driven tooth 402 through the buffer disc 301. Those skilled in the art to which the present application belongs can understand that the buffer disc 301 in the present application may be an integrated rubber buffer disc 301, and may also be formed by coating a rigid skeleton with an elastic material such as rubber, which is not described herein again.

The driving disk 201 is connected with an output shaft of the engine 101, the driven disk 401 is connected with an input shaft 502 of the generator 501, the buffer disk 301 is arranged between the driving disk 201 and the driven disk 401, the driving teeth 202 arranged on the driving disk 201 are inserted into the first transmission notch 302 arranged on the buffer disk 301, the driven teeth 402 arranged on the driven disk 401 are inserted into the second transmission notch 303 arranged on the buffer disk 301, the first transmission notch 302 and the second transmission notch 303 are alternately arranged along the circumferential direction of the buffer disk 301, the driving teeth 202, the driven teeth 402 and the driving teeth 202 are meshed with the driven teeth 402 through the buffer disk 301, the driving teeth 202 can transmit power to the driven teeth 402, the engine 101 can transmit power with the generator 501 through the driving disk 201, the buffer disk 301 and the driven disk 401, the buffer disk 301 has elasticity, and when impact exists between the driving teeth 202 and the driven teeth 402, the buffer disk 301 can absorb impact energy, thereby reducing the impact transmitted from the driving tooth 202 to the driven tooth 402 or from the driven tooth 402 to the driving tooth 202, and further avoiding damage to the engine 101 or the generator 501.

The driving disc 201 is in inserted fit with the buffer disc 301 through the driving teeth 202 and the first transmission notch 302, the driven disc 401 is in inserted fit with the buffer disc 301 through the driven teeth 402 and the second transmission notch 303, the driving teeth 202 are abutted with the outer wall of the buffer disc 301 at the first transmission notch 302, the driven teeth 402 are abutted with the outer wall of the buffer disc 301 at the second transmission notch 303, the buffer disc 301 has a positioning effect on the installation of the driving disc 201 and the driven disc 401, the buffer disc 301 has elasticity, the driving teeth 202 and the driven teeth 402 are abutted with the outer wall of the transmission buffer disc 301, and no gap exists between the driving teeth 202 and the driven teeth 402 and the buffer disc 301, when the coupler works, the transmission between the driving disc 201 and the driven disc 401 is more stable, and the driving disc 201, the buffer disc 301 and the driven disc 401 are in splicing fit, so that the mounting difficulty of the coupler is reduced, and the production efficiency of the range extender can be improved. And the driving disc 201 is in inserting fit with the buffer disc 301 through the driving teeth 202 and the first transmission notch 302, and the driven disc 401 is in inserting fit with the buffer disc 301 through the driven teeth 402 and the second transmission notch 303, so that the driving disc 201, the buffer disc 301 and the driven disc 401 are convenient to detach, and the range extender is convenient to maintain.

Referring to fig. 2 to 5, in an embodiment of the present application, a cross section of the driving tooth 202 is in a sector ring shape, a cross section of the driven tooth 402 is the same as that of the driving tooth 202, a radius direction of the cross section of the driving tooth 202 faces a center of a circle of the driving disk 201, and a radius direction of the cross section of the driven tooth 402 faces a center of a circle of the driven disk 401; when the driving disc 201, the buffer disc 301 and the driven disc 401 are mutually connected and matched to form the coupler, the inner arcs of the cross sections of the driving teeth 202 and the driven teeth 402 are located on the same circle. Those skilled in the art can understand that the cross section of the driving tooth 202 in the present application is perpendicular to the axial direction of the driving disk 201, and the cross section of the driven tooth 402 is perpendicular to the axial direction of the driven disk 401, and will not be described herein again.

The driving disk 201 rotates around the center of a circle under the drive of an output shaft of the engine 101, the driving disk 201 drives the driven disk 401 to rotate around the center of a circle through the driving teeth 202 and the driven teeth 402, the driving disk 201 and the driven disk 401 rotate around the same rotation axis during rotation, the radius direction of the cross section of the driving teeth 202 faces the center of a circle of the driving disk 201, the radius direction of the cross section of the driven teeth 402 faces the center of a circle of the driven disk 401, the cross sections of the driving teeth 202 and the driven teeth 402 are the same, and when the driving disk 201, the buffer disk 301 and the driven disk 401 are mutually connected and matched to form a coupler, the inner circular arc of the cross section of the driving teeth 202 and the inner circular arc of the cross section of the driven teeth 402 are located on the same circle, the radius direction of the cross section of the driving teeth 202 is the same as the radius direction of the cross section of the driven teeth 402, and the radius directions of the driving teeth 202 and the driven teeth 402 face the rotation center, so that the driving teeth 202 and the driven teeth 402 can be better meshed, so as to better transmit power; and because the driving teeth 202 are meshed with the driven teeth 402 through the buffer disc 301, when the transmission torque of the coupler is unchanged, the larger the meshing contact surface between the driving teeth 202 and the driven teeth 402 is, the smaller the pressure applied to the unit area of the buffer disc 301 is, so that the service life of the buffer disc 301 can be obviously prolonged, and the later maintenance cost of the range extender is reduced.

Referring to fig. 2 and 3, in one embodiment of the present application, the driving disk 201 is provided with a plurality of driving teeth 202 at intervals in a circumferential direction thereof, and the driven disk 401 is provided with the same number of driven teeth 402 as the driving teeth 202 at intervals in the circumferential direction thereof.

Carry out power transmission through setting up a plurality of drive teeth 202 and a plurality of driven tooth 402 combined action, can show when reducing to carry out power transmission between engine 101 and the generator 501, single drive tooth 202, the power that single driven tooth 402 received, thereby can effectual improvement drive tooth 202, the life of driven tooth 402, reduce the later maintenance cost, and carry out power transmission's mode through a plurality of drive teeth 202 and a plurality of driven tooth 402 combined action in the setting place, can be when carrying out power transmission, reduce single first transmission breach 302, the deformation degree of single second transmission breach 303, thereby reduce the relative motion of drive dish 201 and driven dish 401, improve driven stationarity.

Referring to fig. 2 and 4, further, the first transmission notches 302 and the second transmission notches 303 are uniformly spaced along the circumferential direction of the buffer disc 301.

Because the buffer disc 301 has elasticity, and the driving tooth 202 meshes with the driven tooth 402 through the buffer disc 301, the first transmission notch 302 and the second transmission notch 303 are uniformly arranged along the circumferential direction of the buffer disc 301 at intervals, so that the deformation quantity of each first transmission notch 302 and each second transmission notch 303 of the buffer disc 301 is uniform, the impact generated between the driving tooth 202 and the driven tooth 402 due to the large local deformation quantity is avoided, the unstable power transmission between the engine 101 and the generator 501 is avoided, and the service life of the range extender is prevented from being influenced.

Technical personnel who belongs to the technical field of this application can understand, in an embodiment of this application, the one end butt of driving disk 201 and buffer disc 301, the other end butt of driven disk 401 and buffer disc 301 to buffer disc 301 can reduce the axial impact of driving disk 201 and driven disk 401, improves driven stationarity, improves the life of range extender.

Referring to fig. 2 and 5, in an embodiment of the present application, an end face of the driven disc 401 opposite to the driving disc 201 is provided with a mounting boss 403, an extending direction of the mounting boss 403 is the same as an axial direction of the driven disc 401, the buffer disc 301 is provided with a mounting hole 304 for the mounting boss 403 to be inserted, so that the buffer disc 301 can be sleeved on the mounting boss 403 through the mounting hole 304, the buffer disc 301 can be mounted on the driven disc 401, the mounting boss 403 is provided with an output hole 404 for the input shaft 502 of the generator 501 to be inserted into along the axial direction of the driven disc 401, the buffer disc 301 can be inserted and matched with the driven disc 401 through the mounting hole 304 and the second transmission notch 303, and the driven disc 401 is inserted and matched with the input shaft 502 of the generator 501 through the output hole 404, thereby facilitating the mounting of the driven disc 401 and the buffer disc 301.

Referring to fig. 5 and 6, further, the input shaft 502 of the generator 501 is a spline shaft, the output hole 404 is a spline hole matched with the input shaft 502 of the generator 501, and the driven disc 401 and the input shaft 502 of the generator 501 are in spline connection, so that the alignment of the driven disc 401 and the input shaft 502 of the generator 501 can be ensured, the transmission smoothness of the driven disc 401 and the generator 501 is ensured, and the service life of the range extender is prolonged.

Referring to fig. 3, in one embodiment of the present application, the driving disk 201 is provided with a fixing through hole 203, the hole depth of the fixing through hole 203 can be the same as the axial direction of the driving disk 201, and a bolt can fix the driving disk 201 to the end surface of the flywheel 103 connected to the output shaft of the engine 101 through the fixing through hole 203.

The driving disc 201 is provided with a plurality of fixing through holes 203 along the circumferential direction, and bolts can fix the driving disc 201 on the flywheel 103 connected with the output shaft of the engine 101 through the plurality of fixing through holes 203, so that the installation can be realized without changing the structure of the existing engine 101, and the assembly of the range extender is facilitated.

Referring to fig. 6 and 7, in an embodiment of the present application, the engine 101 is provided with the first flange 102, and the generator 501 is provided with the second flange 503 which is bolted to the first flange 102, so that the generator 501 is fixed to the engine 101, and thus the joint of the engine 101 and the generator 501 is fixed in the range extender, the assembling steps of the joint are reduced, and the production efficiency of the range extender is improved.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as a whole to form other embodiments as would be understood by those skilled in the art.

The above-listed detailed description is only a specific description of possible examples of the present application, and they are not intended to limit the scope of the present application, and equivalent embodiments or modifications, such as combinations, divisions, or repetitions of features, which do not depart from the technical spirit of the present application, should be included in the scope of the present application.

Claims (10)

1. An extended range electric vehicle range extender assembly is characterized by comprising,

an engine;

a generator;

the coupler comprises a driving disc connected with an output shaft of the engine, a driven disc connected with an input shaft of the generator and a buffer disc which is arranged between the driving disc and the driven disc and has elasticity;

a driving tooth is arranged on the end face of the driving disc opposite to the driven disc;

the end face of the driven disc opposite to the driving disc is provided with driven teeth;

the buffer disc is alternately provided with a first transmission notch for inserting the driving tooth and a second transmission notch for inserting the driven tooth along the circumferential direction of the buffer disc, the driving tooth is abutted to the outer wall of the buffer disc at the first transmission notch, the driven tooth is abutted to the outer wall of the buffer disc at the second transmission notch, and the driving tooth is meshed with the driven tooth through the buffer disc.

2. The range extender assembly of claim 1, wherein,

the cross section of the driving tooth is in a sector ring shape, the cross section of the driven tooth is the same as that of the driving tooth, the radius direction of the cross section of the driving tooth faces to the circle center of the driving disc, and the radius direction of the cross section of the driven tooth faces to the circle center of the driven disc;

when the driving disc, the buffer disc and the driven disc are mutually connected and matched to form the coupler, the inner circular arc of the cross section of the driving tooth and the inner circular arc of the cross section of the driven tooth are positioned on the same circle.

3. The range extender assembly of claim 1, wherein,

the first transmission notch and the second transmission notch are arranged at equal intervals along the circumferential direction of the buffer disc.

4. The range extender assembly of claim 1, wherein,

the driving disc is connected with one end of the buffer disc in an abutting mode, and the driven disc is connected with the other end of the buffer disc in an abutting mode.

5. The range extender assembly of claim 1, wherein,

the end face of the driven disc opposite to the driving disc is provided with a mounting boss, the extending direction of the mounting boss is the same as the axis direction of the driven disc, the buffer disc is provided with a mounting hole for the mounting boss to be inserted, and the mounting boss is provided with an output hole for the input shaft of the generator to be inserted along the axis direction of the driven disc.

6. The range extender assembly of claim 5, wherein,

the input shaft of the generator is a spline shaft, and the output hole is a spline hole matched with the input shaft of the generator.

7. The range extender assembly of claim 1, wherein,

the driving disc is provided with a plurality of driving teeth at intervals along the circumferential direction of the driving disc, and the driven disc is provided with driven teeth with the same number as the driving teeth at intervals along the circumferential direction of the driven disc.

8. The range extender assembly of claim 1, wherein,

the driving disc is provided with a fixing through hole, and a bolt can fix the driving disc on a flywheel connected with an output shaft of the engine through the fixing through hole.

9. The range extender assembly of claim 1, wherein,

the buffer disc is an integrated rubber buffer disc.

10. The range extender assembly of claim 1, wherein,

the engine is provided with a first flange plate, and the generator is provided with a second flange plate in bolted connection with the first flange plate, so that the generator is fixed on the engine.

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