Range extender and vehicle

Abstract

The utility model provides a range extender and a vehicle, and relates to the field of range extender structures. The range extender includes: a crankshaft; the torque limiter is provided with a damping assembly and a limiting assembly connected with the crankshaft; the vibration reduction assembly comprises a vibration reduction spring and a vibration reduction disc provided with a clamping part, and the limiting assembly abuts against the vibration reduction disc so that the clamping part can be correspondingly clamped with the vibration reduction spring; and the motor is directly connected with the torque limiter through a first connecting piece, and the limiting assembly can support the motor. In this way, the transmission efficiency can be effectively improved, the space utilization rate is increased, and the NVH performance of the city augmentation device is improved; in addition, the torque limiter in the range extender is further provided with a limiting assembly, the limiting assembly can play a role in limiting the damping spring and can also play a role in supporting the motor, and therefore the stability of the overall structure of the range extender can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of range extender structure, in particular to a range extender and a vehicle. BACKGROUND

[0002] New energy vehicles mainly include pure electric, hybrid and range extended, and in the range extended vehicle, the range extender is the power core of the vehicle. The common range extender at present is to transmit power to the motor through the flywheel, and the flywheel is connected with the shaft of the motor through the spline (as shown in Figure 1 ), which reduces the transmission efficiency, and the spline connection also affects the performance of the range extender in NVH (noise, vibration and harshness), so that knocking sound may occur in individual working conditions; in addition, the space is required to be left for the spline connection between the motor shaft and the flywheel, which reduces the space utilization of the range extender. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the purpose of the present application is to provide a range extender and a vehicle to solve the problems of low transmission efficiency, poor NVH performance and low space utilization of the existing range extender.

[0004] In order to achieve the above purpose, according to the first aspect of the present application, a range extender is provided, wherein the range extender comprises:

[0005] a crankshaft;

[0006] a torque limiter, provided with a limiting component connected with the crankshaft and a damping component; the damping component comprises a damping spring and a damping disc formed with a clamping part, and the limiting component abuts against the damping disc, so that the clamping part corresponds to the damping spring;

[0007] a motor, directly connected with the torque limiter through a first connecting piece, and the limiting component can support the motor.

[0008] Preferably, along the axial direction of the torque limiter, the crankshaft is located at the first end of the torque limiter, and the motor is located at the second end of the torque limiter; the axial lines of the crankshaft, the torque limiter and the motor are collinear.

[0009] Preferably, the limiting component comprises a pressure disc, and the pressure disc is formed with a main body and a flange connected with the main body;

[0010] the main body is formed as a cylindrical structure, so that the axial line of the main body is collinear with the axial line of the torque limiter; the inside of the main body is formed with a cavity, and the cavity penetrates through the second end of the main body along the axial direction of the main body, so that an opening is formed at the second end of the main body along the axial direction of the main body;

[0011] The flange is formed as a circular ring structure, the flange corresponds to the position connected to the opening, and the flange extends away from the axis of the main body.

[0012] Preferably, the limiting assembly further comprises a flexible disc welded with the end face of the first end of the main body to form a combination, and the combination is connected to the crankshaft through the second connecting piece.

[0013] Preferably, the limiting assembly further comprises a plurality of compression bushings, and the plurality of compression bushings are sequentially sleeved on the outer side of the main body and abut against the flange.

[0014] Preferably, the damping disc further comprises a first damping disc, a hub and a second damping disc, the first damping disc, the hub and the second damping disc are sequentially sleeved on the outer side of the main body along the axis direction of the main body, and the second damping disc abuts against the compression bushing.

[0015] Preferably, the first damping disc and the second damping disc are both formed with a bending structure to form the clamping part, and the two bending structures abut against the two ends of the damping spring along the axis direction of the main body.

[0016] Preferably, the motor comprises a rotor base formed as a cylindrical structure, and an inner cavity of the rotor base penetrates through the first end and the second end of the rotor base along the axis direction of the rotor base to form a first through hole and a second through hole, respectively.

[0017] The rotor base is sleeved on the outer side of the second damping disc through the first through hole, so that the second end of the main body and the compression bushing extend into the inner cavity of the rotor base.

[0018] Preferably, the first end of the rotor base is connected to the hub through the first connecting piece.

[0019] According to the second aspect of the utility model, a vehicle is provided, wherein the vehicle comprises the range extender as described above.

[0020] According to the range extender and the vehicle of the utility model, the motor shaft of the motor is cancelled, and the motor is directly connected to the torque limiter (the flywheel belongs to the component in the torque limiter) through the first connecting piece, so that the transmission efficiency, the space utilization rate and the NVH performance of the range extender can be effectively improved. In addition, the torque limiter in the range extender is further provided with a limiting assembly, which can limit the damping spring and support the motor, so that the stability of the overall structure of the range extender can be improved.

[0021] In order to make the above objectives, characteristics and advantages of the present application more apparent, more comprehensible, the following preferred embodiments are specifically described in detail below, together with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 is a sectional view of the range extender in the prior art;

[0024] Figure 2 is a partial sectional view of the range extender of the embodiment of the present application.

[0025] Icon: 1 - crankshaft; 2 - torque limiter; 21 - flywheel; 22 - flexible disc; 23 - pressure plate; 24 - compression ring; 25 - first damping disc; 26 - disc hub; 27 - second damping disc; 28 - damping spring; 3 - motor; 31 - rotor base; 41 - first connecting piece; 42 - second connecting piece. DETAILED DESCRIPTION

[0026] The following detailed description is provided to help the reader obtain a complete understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents can be apparent to those skilled in the art after understanding the disclosure of the present application. For example, the order of the operations described herein is merely an example, and is not limited to the order set forth herein, and in addition to the operations that must occur in a specific order, changes that will be apparent to those skilled in the art after understanding the disclosure of the present application can be made. In addition, the description of features known in the art can be omitted in order to improve clarity and brevity.

[0027] The features described herein can be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to show some of the many ways in which the methods, devices and / or systems described herein can be implemented after understanding the disclosure of the present application.

[0028] Throughout the specification, when an element (such as a layer, region or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, "on top of" another element or "covering" another element, it can be directly on, connected to, coupled to, adjacent to, on top of, or covering the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on", "directly connected to", "directly coupled to", "directly adjacent to", "directly on top of", or "directly covering" another element, there are no other elements interposed therebetween.

[0029] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.

[0030] Although terms such as "first" and "second" and "third" can be used herein to describe various components, assemblies, regions, layers or sections, these components, assemblies, regions, layers or sections are not limited by these terms. Rather, these terms are only used to distinguish one component, assembly, region, layer or section from another component, assembly, region, layer or section. Thus, the first component, assembly, region, layer or section referred to in the examples described herein could also be termed a second component, assembly, region, layer or section, without departing from the teachings of the examples.

[0031] For ease of description, spatial relationship terms, such as "on", "upper", "beneath", and "lower", can be used herein to describe the orientation of one element relative to another element as illustrated in the figures. Such spatial relationship terms can be intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, a component described as relative to another component on the "upper" side of another component would then be oriented on the "lower" side of that component. Accordingly, the term "on" encompasses both an "on" and "under" orientation in accordance with how the device is oriented in space. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatial relationship terms used herein interpreted accordingly.

[0032] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including" and "has" are listed means the stated features, integers, operations, components, elements and / or the combination thereof, but does not preclude the presence or addition of one or more other features, integers, operations, components, elements and / or the combination thereof.

[0033] Variations in the shapes illustrated in the drawings can occur as a result of manufacturing processes and / or tolerances. Thus, the examples described herein are not limited to the specific shapes illustrated in the drawings, but include variations in shapes that occur during manufacturing.

[0034] Features of the examples described herein can be combined with one another in a variety of ways. Furthermore, although the examples described herein have a variety of configurations, other configurations are possible in accordance with the disclosure herein, as will be apparent upon consideration of the specification as a whole.

[0035] According to the first aspect of the present application, a range extender is provided, which comprises a crankshaft 1, a torque limiter 2 and a motor 3 connected in sequence. In the following, the specific structure of the range extender according to the present application and the positional relationship of the components will be described in detail. In order to make the following description clearer and more accurate, the connection direction of the crankshaft 1, the torque limiter 2 and the motor 3 is defined as the first direction (i.e. the direction indicated by the arrow in the middle). Figure 2

[0036] In the present embodiment, as shown in Figure 2 , the axial directions of the crankshaft 1, the torque limiter 2 and the motor 3 are all the same as the first direction, and the axes of the three are collinear, which can ensure the stability of the overall structure of the range extender. Further, along the first direction, the crankshaft 1 is located at the first end of the torque limiter 2, and the motor 3 is located at the second end of the torque limiter 2.

[0037] In the present embodiment, the torque limiter 2 is provided with a limiting assembly. Specifically, as shown in Figure 2 , the limiting assembly comprises a pressure plate 23, which is formed with a main body and a flange connected to the main body. More specifically, the main body is formed in a cylindrical structure, so that the axis of the main body is collinear with the axis of the torque limiter 2. In addition, the inside of the main body is formed with a cavity, which penetrates through the second end of the main body along the axial direction of the main body, so that an opening is formed at the second end of the main body along the axial direction. The flange is formed in a circular ring structure, which is connected to the position of the opening of the main body, and the flange extends away from the axis of the main body.

[0038] ​It should be noted that the connection mode of the main body and the flange is not fixed, for example, it can be fixed by welding or integrated molding; in addition, the specifications of the two are not specifically limited, and should be determined comprehensively according to the actual situation, such as the specifications of other components in the torque limiter 2, as long as the technical effects described below can be achieved.

[0039] The limiting assembly further comprises a flexible disc 22 welded with the end face of the first end of the main body to form a combination, and the combination is connected with the crankshaft 1 through a second connecting piece 42. Specifically, the combination and the crankshaft 1 are respectively formed with a plurality of connecting holes corresponding to the second connecting piece 42, and connecting the second connecting piece 42 with the connecting holes one by one can achieve the connection of the combination and the crankshaft 1, and further achieve the stable connection of the torque limiter 2 and the crankshaft 1. The second connecting piece 42 can be formed as a rivet or a screw, and the number and specifications of the second connecting piece 42 are not fixed, as long as the combination and the crankshaft 1 can be stably connected.

[0040] In addition, the limiting assembly further comprises a plurality of compression washers 24, which are sequentially sleeved on the outer side of the main body along the first direction and abut against the flange, that is, the compression washer 24 closest to the second end of the main body among the plurality of compression washers 24 abuts against the flange. In this embodiment, the torque limiter 2 is further provided with a damping assembly, which comprises a damping disc and a damping spring 28. Specifically, the damping disc comprises a first damping disc 25, a hub 26 and a second damping disc 27, which are sequentially sleeved on the outer side of the main body along the first direction; and the second damping disc 27 abuts against the compression washer 24 (i.e. the compression washer 24 closest to the first end of the main body among the plurality of compression washers 24). That is, along the first direction, the two compression washers 24 at both ends of the plurality of compression washers 24 respectively abut against the second damping disc 27 and the flange.

[0041] Further, as shown in Figure 2 The first damping disc 25 and the second damping disc 27 are both formed with a bending structure to form a clamping portion; in the torque limiter 2, along the first direction, the two bending structures should abut against the two ends of the damping spring 28 respectively. Based on the arrangement of the compression washer 24, the axial movement of the second damping disc 27 is effectively limited, so as to ensure the stability of the damping spring 28, and further facilitate the damping effect of the damping spring 28. Therefore, the specifications and number of the compression washer 24 are not specifically limited, and should be determined comprehensively according to the actual situation, such as the specifications of the damping disc and the specifications of the main body, as long as the technical effects described above can be achieved.

[0042] In the embodiment, the motor 3 comprises a rotor base 31 formed as a cylindrical structure, an inner cavity of the rotor base 31 penetrates through a first end and a second end of the rotor base 31 along a first direction to form a first through hole and a second through hole at the first end and the second end respectively. Further, the rotor base 31 is correspondingly sleeved on the outer side of the second damping disc 27 through the first through hole, so that the second end of the main body and the plurality of compression gaskets 24 all extend into the inner cavity of the rotor base 31. In this way, the main body of the compression disc 23 can provide a certain supporting force for the second damping disc 27 and the rotor base 31, so as to avoid the rotor base 31 and the rotor wire group connected thereto from sliding down too much.

[0043] Further, the first end of the rotor base 31 is connected with the hub 26 through a first connecting piece 41, that is, the hub 26 and the rotor base 31 are respectively formed with connecting holes corresponding to the first connecting piece 41, and the first connecting piece 41 can be a rivet, a bolt or the like. In this way, the flywheel 21 and the flexible disc 22 can transmit the power of the crankshaft 1 to the hub 26 through the damping spring 28, and then directly transmit the power to the rotor base 31 of the motor 3 (that is, the power can be transmitted to the motor 3).

[0044] It should be noted that the structure of the range extender is relatively complex, and the components included therein are also relatively more. The components not mentioned in the present description can be designed according to the structure of the existing range extender. In addition, some components in the embodiment, such as the damping assembly, are also inherent components of the existing range extender (as shown in the prior art), and the specific structure and assembly mode thereof also belong to the prior art, and thus will not be described in detail. Figure 1

[0045] According to the range extender of the present application, the motor shaft of the motor 3 is cancelled, and the motor 3 is directly connected with the torque limiter 2 through the first connecting piece 41 (the flywheel 21 is a component in the torque limiter 2), so that the transmission efficiency, the space utilization and the NVH performance of the range extender can be effectively improved. In addition, the torque limiter 2 in the range extender is further provided with a limiting assembly, which can limit the damping spring 28 and support the motor 3, so that the stability of the overall structure of the range extender can be improved.

[0046] According to the second aspect of the present application, a vehicle is provided, which comprises the range extender as described above.

[0047] ​Finally, it should be noted that the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit the same. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any skilled person in the art can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features, within the technical scope disclosed by the present application. The modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A range extender, characterized in that, The range extender comprises: a crankshaft; a torque limiter provided with a damping assembly and a limiting assembly connected with the crankshaft; the damping assembly comprises a damping spring and a damping disc formed with a clamping portion, and the limiting assembly is in abutment with the damping disc to make the clamping portion correspondingly clamped with the damping spring; a motor directly connected with the torque limiter through a first connecting member, and the limiting assembly can support the motor.

2. The range extender of claim 1, characterized in that Along the axial direction of the torque limiter, the crankshaft is located at the first end of the torque limiter, and the motor is located at the second end of the torque limiter; the axial lines of the crankshaft, the torque limiter and the motor are collinear.

3. The range extender of claim 2, characterized in that The limiting assembly comprises a pressing disc formed with a main body and a flange connected with the main body; the main body is formed into a cylindrical structure so that the axial line of the main body is collinear with the axial line of the torque limiter; the inside of the main body is formed with a cavity, and the cavity penetrates through the second end of the main body along the axial direction of the main body to form an opening at the second end of the main body along the axial direction of the main body; the flange is formed into a circular ring structure, and the flange is correspondingly connected at the position of the opening and extends away from the axial line of the main body.

4. The range extender of claim 3, characterized in that The limiting assembly further comprises a flexible disc welded with the end face of the first end of the main body to form a combined body; the combined body is correspondingly connected with the crankshaft through a second connecting member.

5. The range extender of claim 3, wherein, The limiting assembly further comprises a plurality of pressing gaskets, and the plurality of pressing gaskets are sequentially sleeved on the outside of the main body and in abutment with the flange.

6. The range extender of claim 5, characterized in that The damping disc further comprises a first damping disc, a disc hub and a second damping disc, which are sequentially sleeved on the outside of the main body along the axial direction of the main body; the second damping disc is in abutment with the pressing gasket.

7. The range extender of claim 6, characterized in that The first damping disc and the second damping disc are both formed with a bending structure to form the clamping portion; along the axial direction of the main body, the two bending structures are respectively in abutment with the two ends of the damping spring.

8. The range extender of claim 7, characterized in that The motor comprises a rotor base formed into a cylindrical structure, and the inner cavity of the rotor base penetrates through the first end and the second end of the rotor base along the axial direction of the rotor base to form a first through hole and a second through hole respectively; the rotor base is correspondingly sleeved on the outside of the second damping disc through the first through hole, so that the second end of the main body and the pressing gasket extend into the inner cavity of the rotor base.

9. The range extender of claim 8, characterized in that The first end of the rotor base is correspondingly connected with the disc hub through the first connecting member.

10. A vehicle characterized by comprising: The vehicle comprises the range extender according to any one of claims 1 to 9.

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