CN212055668U

CN212055668U - Range extender flywheel and vehicle applying same

Info

Publication number: CN212055668U
Application number: CN202020036964.2U
Authority: CN
Inventors: 聂学行
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely New Energy Commercial Vehicle Group Co Ltd; Geely Sichuan Commercial Vehicle Co Ltd; Zhejiang Geely New Energy Commercial Vehicle Development Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Geely Sichuan Commercial Vehicle Co Ltd; Zhejiang Geely New Energy Commercial Vehicle Development Co Ltd; Zhejiang Geely Remote New Energy Commercial Vehicle Group Co Ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-12-01
Anticipated expiration: 2030-01-08

Abstract

The utility model relates to a range extender flywheel and use its vehicle relates to vehicle technical field, the range extender flywheel that this application discloses includes inner hub, outer hub and damper; the outer hub is fixedly connected with an engine; the outer hub comprises a groove, the inner hub is arranged in the groove, and the inner hub is connected with the generator; the damper is disposed between the groove and the inner hub. The utility model provides an increase journey ware flywheel has simple structure's characteristics.

Description

Range extender flywheel and vehicle applying same

Technical Field

The utility model relates to a vehicle technical field, in particular to increase journey ware flywheel and use its vehicle.

Background

With the increasing global energy and environmental situation, new energy vehicles represented by pure electric vehicles, plug-in hybrid vehicles and fuel cell vehicles become an important direction for the development of vehicles in the future. Among them, in new energy vehicles, especially pure electric vehicles mainly have the shortcoming of high cost, duration weak, charge time long, life is short, and in order to solve these problems, high-efficient range extender product gradually rises.

In order to improve the economic and kinetic energy performance of a new energy vehicle, the range extender comprises an engine, a flywheel and a generator, the flywheel is arranged between the engine and the generator and connected with the engine and the generator through the flywheel, and a single mass flywheel and a double mass flywheel are used at present. The rear part of the existing single-mass flywheel needs to be additionally provided with a torsional damper to reduce the vibration of a generator and an engine; when a dual mass flywheel is used, no additional torsional damper is required because the flywheel itself has a spring to absorb the shock.

However, when the range extender uses a single mass flywheel, a torsion damper is added behind the single mass flywheel, so that one more process is required during assembly, and the assembly is troublesome; when the dual-mass flywheel is used, the dual-mass flywheel has larger weight and higher cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that increases journey ware flywheel structure complicacy is solved.

In order to solve the technical problem, the application discloses a range extender flywheel which comprises an inner hub, an outer hub and a damping piece;

the outer hub is fixedly connected with an engine;

the outer hub comprises a groove, the inner hub is arranged in the groove, and the inner hub is connected with the generator;

the damper is disposed between the groove and the inner hub.

Optionally, the shock absorbing member is of annular configuration;

the damping piece is sleeved on the outer wall of the inner hub and is in interference fit with the outer wall of the inner hub;

the outer side of the damping piece is in interference fit with the groove.

Optionally, the material of the shock absorbing member is rubber;

one side of the shock absorption piece is connected with the outer wall of the inner hub in a vulcanization mode, and the other side of the shock absorption piece is connected with the groove in a vulcanization mode.

Optionally, the outer wall of the inner hub is provided with a first protrusion;

the shock absorption piece is provided with a first concave structure matched with the first bulge.

Optionally, the outer wall of the inner hub is provided with a second recess structure;

the shock absorbing piece is provided with a second bulge matched with the second concave structure.

Optionally, the outer hub is provided with a first mounting hole, and the outer hub and the engine are fixedly connected through the first mounting hole and the bolt.

Optionally, the inner hub is provided with a second assembly hole corresponding to the first assembly hole, and the inner hub and the engine are fixedly connected through the second assembly hole and the bolt.

Optionally, the outer hub is provided with a weight reducing structure.

Optionally, the inner hub is splined to the generator.

The present application discloses in another aspect a vehicle comprising the range extender flywheel described above.

By adopting the technical scheme, the range extender flywheel disclosed by the application has the following beneficial effects:

one aspect of the application discloses a range extender flywheel, which comprises an inner hub, an outer hub and a damping piece; the outer hub is fixedly connected with an engine; the outer hub comprises a groove, the inner hub is arranged in the groove, and the inner hub is connected with the generator; the mechanical energy of the engine is connected with the generator through the flywheel and then converted into electric energy, the damping piece is arranged between the groove and the inner hub, the torsion between the outer hub and the inner hub is reduced, and the service life of the range extender flywheel is prolonged.

In the prior art, a torsion damper is generally added on a single mass flywheel, so that the vibration between an engine and a generator is reduced, and the service life of the flywheel and the generator is prolonged; the vibration between the engine and the generator is reduced by adding the damping piece between the outer hub and the inner hub, so that the assembly process is not increased, the weight is hardly increased, and the cost is low.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a cross-sectional view of the range extender flywheel of the present application;

FIG. 2 is a schematic structural view of a range extender flywheel according to a first aspect of the present disclosure;

fig. 3 is a schematic structural diagram of a range extender flywheel according to a second aspect of the present application.

The following is a supplementary description of the drawings:

1-an outer hub; 101-a groove; 102-a first assembly hole; 103-weight reduction structure; 2-inner hub; 201-internal splines; 202-a second assembly hole; 3-a shock-absorbing member.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the present application. In the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

As shown in fig. 1, fig. 1 is a cross-sectional view of the range extender flywheel of the present application. The range extender flywheel disclosed by the application comprises an inner hub 2, an outer hub 1 and a damping piece 3; the outer hub 1 is fixedly connected with an engine; the inner hub 2 is connected with a generator; the outer hub 1 and the inner hub 2 are connected through the damping piece 3, and compared with a dual-mass flywheel, the dual-mass flywheel has the advantages of being small in weight and low in cost; compared with the existing single-mass flywheel and torsional damper, only one flywheel needs to be assembled, the assembling procedures are few, and the cost is low. Through increasing damper 3, also can reduce the vibration of flywheel and generator, improve NVH nature, prolong the life of flywheel and generator.

This outer wheel hub 1 includes recess 101, this interior wheel hub 2 sets up in this recess 101, the integrated level that has improved the journey ware flywheel and has played spacing effect, prevent interior wheel hub 2 roll-off promptly, interior wheel hub 2 is connected with the generator, outer wheel hub 1 is connected with the engine, the mechanical energy that makes the engine is connected with the generator through this flywheel, thereby turn into the electric energy, this damper 3 sets up in this recess 101, between outer wheel hub 1 and interior wheel hub 2 promptly, the torsion between outer wheel hub 1 and the interior wheel hub 2 has been reduced, start when the journey ware generator that increases, when operation and shut down, can reduce the flywheel through damper 3, the impact of generator and engine, reduce vibration, improve NVH, and long service life.

In the prior art, a torsion damper is generally added on a single mass flywheel, so that the vibration between an engine and a generator is reduced, and the service life of the flywheel and the generator is prolonged; the vibration between the engine and the generator is reduced by adding the damping piece 3 between the outer hub 1 and the inner hub 2, so that the assembly process is not increased, the weight is hardly increased, and the cost is low.

As can be seen from figure 1, the inner hub 2 is arranged in the groove 101, and the inner hub 2 is not in contact with the bottom of the groove 101, so that local friction between the outer hub 1 and the inner hub 2 is reduced, and the service life of the range extender flywheel is shortened.

As shown in fig. 2, fig. 2 is a schematic structural diagram of a range extender flywheel according to a first view of the present application. In an alternative embodiment, the damper 3 is of an annular structure, so that the damper 3 can be sleeved on the outer wall of the inner hub 2, the damper 3 is in interference fit with the outer wall of the inner hub 2, and the outer side of the damper 3 is in interference fit with the groove 101, so that the inner hub 2 and the outer hub 1 can not slide relative to each other, and force transmission between an engine and a generator is ensured.

In an alternative embodiment, the material of the shock absorbing member 3 is rubber, which has excellent elasticity and can generate large deformation under the action of small external force, and the shock absorbing member can recover the original shape after the external force is removed; and can be artificially synthesized, and has low cost. In another alternative embodiment, one side of the damper 3 is vulcanization-bonded to the outer wall of the inner hub 2, and the other side of the damper is vulcanization-bonded to the groove 101; the damper 3 can be fixed to the inner hub 2 and the outer hub 1, that is, the inner hub 2 and the outer hub 1 do not slide relatively to each other to a large extent; meanwhile, the rubber has elasticity and chemical stability, and the service life of the range extender flywheel is prolonged, because the vulcanized and crosslinked molecular chains have the capability of rapid recovery when deformed under the action of external force, the vulcanized rubber has good physical and mechanical properties and chemical stability.

In another alternative embodiment, the outer wall of the inner hub 2 is provided with a first protrusion, and the shock absorbing member 3 is provided with a first concave structure matched with the first protrusion; the damper elements 3 of the inner hub 2 are preferably connected to one another more quickly by means of a plug connection.

Of course, it is also possible that the outer wall of the inner hub 2 is provided with a second recess structure; the shock absorbing member 3 is provided with a second protrusion which is engaged with the second recess structure.

In an alternative embodiment, the outer hub 1 is provided with a first mounting hole 102, and the outer hub 1 is fixedly connected with the engine through the first mounting hole 102 and a bolt, although, as will be readily appreciated by those skilled in the art, a pin or a screw may be used instead of the bolt.

As shown in fig. 3, fig. 3 is a schematic structural diagram of a range extender flywheel according to a second aspect of the present application. In another alternative embodiment, the inner hub 2 is provided with a second assembly hole 202, the second assembly hole 202 corresponds to the first assembly hole 102, the inner hub 2 and the engine are fixedly connected through the second assembly hole 202 and the bolt, that is, the inner hub 2 and the outer hub 1 are fixedly connected with the engine, so that the efficiency of the engine for transmitting force to the generator is improved, and of course, a person skilled in the art can easily conceive that a pin or a screw can be used instead of the bolt.

In an alternative embodiment, the outer hub 1 is provided with weight reduction features 103 to reduce cost and to adjust the effect of the flywheel mass to balance the transfer of forces between the engine and the generator.

In an alternative embodiment, the inner hub 2 is splined to the generator, that is, the inner hub 2 is provided with a connecting hole, the inner wall of the connecting hole is provided with an inner spline 201, and the connecting shaft for connecting the generator to the range extender flywheel is provided with an outer spline, so that the generator and the range extender flywheel are fixedly connected through the connection of the outer spline and the inner spline 201, and the force transmission is realized.

In summary, one aspect of the present application discloses a range extender flywheel, which includes an inner hub 2, an outer hub 1 and a damper 3; the outer hub 1 is fixedly connected with an engine; the outer hub 1 comprises a groove 101, the inner hub 2 is arranged in the groove 101, and the inner hub 2 is connected with a generator; the mechanical energy of the engine is connected with the generator through the flywheel and then converted into electric energy, the damping piece 3 is arranged between the groove 101 and the inner hub 2, the torsion between the outer hub 1 and the inner hub 2 is reduced, and the service life of the range extender flywheel is prolonged.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A range extender flywheel, characterized in that: comprises an inner hub (2), an outer hub (1) and a damping piece (3);

the outer hub (1) is fixedly connected with an engine;

the outer hub (1) comprises a groove (101), the inner hub (2) is arranged in the groove (101), and the inner hub (2) is connected with a generator;

the damper (3) is arranged between the recess (101) and the inner hub (2).

2. The range extender flywheel of claim 1, wherein: the shock absorbing part (3) is of an annular structure;

the shock absorbing piece (3) is sleeved on the outer wall of the inner hub (2), and the shock absorbing piece (3) is in interference fit with the outer wall of the inner hub (2);

the outer side of the shock absorption piece (3) is in interference fit with the groove (101).

3. The range extender flywheel of claim 1, wherein: the damping piece (3) is made of rubber;

one side of the shock absorption piece (3) is connected with the outer wall of the inner hub (2) in a vulcanization mode, and the other side of the shock absorption piece is connected with the groove (101) in a vulcanization mode.

4. The range extender flywheel of claim 1, wherein: the outer wall of the inner hub (2) is provided with a first bulge;

the shock absorbing piece (3) is provided with a first concave structure matched with the first bulge.

5. The range extender flywheel of claim 1, wherein: the outer wall of the inner hub (2) is provided with a second concave structure;

the shock absorbing piece (3) is provided with a second bulge matched with the second concave structure.

6. The range extender flywheel of claim 1, wherein: the outer hub (1) is provided with a first assembly hole (102), and the outer hub (1) is fixedly connected with the engine through the first assembly hole (102) and a bolt.

7. The range extender flywheel of claim 6, wherein: the inner hub (2) is provided with a second assembly hole (202), the second assembly hole (202) corresponds to the first assembly hole (102), and the inner hub (2) is fixedly connected with the engine through the second assembly hole (202) and the bolt.

8. The range extender flywheel of claim 1, wherein: the outer hub (1) is provided with a weight reduction structure (103).

9. The range extender flywheel of claim 1, wherein: the inner hub (2) is splined to the generator.

10. A vehicle, characterized by: comprising a range extender flywheel according to any of claims 1 to 9.