Generator transmission assembly and hybrid power box of new energy hybrid power vehicle

Abstract

The utility model relates to a generator transmission assembly and a hybrid power box of a new energy hybrid power vehicle, the generator transmission assembly comprises a generator and an engine, and the engine is used for driving the generator to generate electricity; the first connecting assembly is connected with the generator and the engine in a gear transmission mode, a torque limiter and a first shock absorber are arranged in the first connecting assembly, the torque limiter is arranged on the engine, and the first shock absorber is arranged on an engine crankshaft of the engine. By the adoption of the scheme, due to the fact that the torque limiter is arranged on the engine, overlarge torque or fluctuating torque output can be prevented; as the first shock absorber is arranged on the engine crankshaft, small-angle rotation of the engine is not transmitted; therefore, the torque limiter and the first shock absorber are arranged in the first connecting assembly at the same time, the generator is protected, the double shock absorption effect on the transmission system is achieved, rotation of the generator and the first connecting assembly is reduced, and therefore vibration noise generated when the generator and the first connecting assembly rotate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy hybrid vehicles, in particular to a generator transmission component and a hybrid box of a new energy hybrid vehicle. Background Art

[0002] At present, various new energy vehicle companies have certain experience in developing new energy hybrid power, but their technical accumulation is still not deep enough, and they do not have a deep enough grasp of the characteristics of automotive generators and drive motors. In the matching of new powertrains such as hybrid boxes and engines, many existing new energy hybrid vehicles have relatively poor vibration and noise, which reduces the owner's experience and has adverse effects on the surrounding environment. Utility Model Content

[0003] Based on this, a generator transmission assembly and a hybrid box of a new energy hybrid vehicle are provided to improve the problem of large vibration and noise generated when the engine of the new energy hybrid vehicle is used in the prior art.

[0004] On the one hand, the utility model provides a generator transmission assembly for a new energy hybrid vehicle, the generator transmission assembly comprising:

[0005] Generator and engine, the engine is used to drive the generator to generate electricity;

[0006] The first connecting component connects the generator and the engine through a gear transmission mode. The first connecting component includes a torque limiter and a first vibration damper. The torque limiter is arranged on the engine, and the first vibration damper is arranged on the engine crankshaft of the engine.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] In one implementation, the torque limiter includes a first inner ring and a first outer ring that are rotatable relative to each other, the engine includes a flywheel and an engine crankshaft, the first inner ring is connected to the engine crankshaft, and the first outer ring is connected to the flywheel.

[0009] In one implementation, the first connection component further includes:

[0010] The first gear is connected to the engine crankshaft in its axial direction.

[0011] The second gear is axially connected to the generator input shaft of the generator, and the second gear is meshed with the first gear.

[0012] In one implementation, the first gear is integrated on the first vibration absorber.

[0013] In one implementation, the generator further includes a generator rotor shaft, and the generator input shaft and the generator rotor shaft are both rotatably connected with a first bearing;

[0014] The outer rings of the first bearings are all sleeved with silent bushings.

[0015] In one implementation, the first connection assembly further includes two second bearings.

[0016] The two second bearings are rotatably connected to the two ends of the first gear in the axial direction respectively, and the outer rings of the second bearings are sleeved with silent bushings.

[0017] On the other hand, the utility model further provides a hybrid box, which is provided with a shell, in which a generator transmission assembly of a new energy hybrid vehicle is arranged, and a silent bushing is fixedly connected to the inner cavity of the shell by casting.

[0018] In one implementation, a rotating assembly is further provided in the housing, and the rotating assembly includes:

[0019] A driving motor is used to drive the wheels to rotate;

[0020] The second connecting assembly is used to connect the driving motor and the wheels, and the second connecting assembly includes a differential and a second shock absorber.

[0021] In one implementation, a rotating shaft is provided in the axial direction of the wheel, and the rotating shaft is connected to the differential; the second connecting assembly includes a third gear sleeved on the rotating shaft, and the third gear is integrated on the second shock absorber.

[0022] In one implementation, the drive motor includes a drive motor rotor shaft and a drive motor output shaft, and the drive motor rotor shaft and the drive motor output shaft are both rotatably connected to a third bearing, and the outer rings of the third bearings are both sleeved with a silent bushing.

[0023] The beneficial effects of the first aspect of the utility model are as follows: since the torque limiter is arranged on the engine, it can limit the torque transmitted by the engine to prevent excessive torque or fluctuating torque output; since the first vibration damper is arranged on the engine crankshaft of the engine, power will not be transmitted when the engine rotates at a small angle; therefore, by arranging the torque limiter and the first vibration damper in the first connecting component at the same time, the generator is protected and a dual vibration reduction effect is achieved on the transmission system, thereby reducing the rotation of the generator and the first connecting component, thereby reducing the vibration noise generated when the generator and the first connecting component rotate.

[0024] The beneficial effect of the second aspect of the utility model is: the shell and the silent bushing are connected together by casting, which effectively reduces the vibration of the silent bushing in the shell, that is, reduces the vibration noise generated between the silent bushing and the shell, and effectively improves the vibration noise of the shaft system; the silent bushing also effectively reduces the impact of increased load and temperature changes on the bearing clearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a generator transmission assembly of a new energy hybrid vehicle in one embodiment;

[0026] Figure 2 is a schematic structural diagram of a rotating assembly in one embodiment;

[0027] Figure 3 A schematic diagram of the position between the generator transmission assembly and the rotating assembly in one embodiment.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 10. generator; 11. generator input shaft; 12. generator rotor shaft; 13. first bearing;

[0030] 20. Engine; 21. Engine crankshaft;

[0031] 31. Torque limiter; 32. First gear; 33. Second gear; 34. Second bearing;

[0032] 40. Silent bushing;

[0033] 50. driving motor; 51. driving motor rotor shaft; 52. driving motor output shaft; 53. third bearing;

[0034] 60. Wheel;

[0035] 71. Differential; 72. Third gear; 73. Fourth gear; 74. Reduction gear set. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0037] A generator 10 transmission assembly for a new energy hybrid vehicle, see Figure 1 , the generator 10 transmission assembly includes:

[0038] The generator 10 and the engine 20, the engine 20 is used to drive the generator 10 to generate electricity;

[0039] The first connecting component connects the generator 10 and the engine 20 through a gear transmission. The first connecting component includes a torque limiter 31 and a first shock absorber. The torque limiter 31 is arranged on the engine 20, and the first shock absorber is arranged on the engine crankshaft 21 of the engine 20.

[0040] According to the present application, since the torque limiter 31 is arranged on the engine 20, the torque transmitted by the engine 20 can be limited to prevent excessive torque or fluctuating torque output; since the first shock absorber is arranged on the engine crankshaft 21 of the engine 20, power will not be transmitted when the engine 20 rotates at a small angle; therefore, by arranging the torque limiter 31 and the first shock absorber in the first connecting assembly at the same time, the generator 10 is protected and a dual vibration reduction effect is achieved on the transmission system, thereby reducing the rotation of the generator 10 and the first connecting assembly, thereby reducing the vibration noise generated when the generator 10 and the first connecting assembly rotate.

[0041] In some embodiments, see Figure 1 The torque limiter 31 includes a first inner ring and a first outer ring that can rotate relatively. The engine 20 includes a flywheel and an engine crankshaft 21. The first inner ring is connected to the engine crankshaft 21, and the first outer ring is connected to the flywheel. In this way, the first inner ring and the first outer ring can rotate relatively within a certain range, so that the first inner ring and the first outer ring can rotate asynchronously, so that the torque limiter 31 can achieve the effect of not transmitting sudden force and reducing vibration. In addition, when the transmitted torque is too large, the torque limiter 31 will be disconnected internally, such as internal slippage, thereby unloading power and not transmitting the torque of the engine 20, which plays a protective effect.

[0042] In some embodiments, see Figure 1 , the first connection component also includes:

[0043] The first gear 32 is axially connected to the engine crankshaft 21.

[0044] The second gear 33 is axially connected to the generator input shaft 11 of the generator 10, and the second gear 33 is meshed with the first gear 32. In this way, when the second gear 33 is meshed with the first gear 32, the first gear 32 is connected to the engine crankshaft 21 to transmit the output torque, and the second gear 33 is connected to the generator 10 to transmit the input torque.

[0045] In some embodiments, the first gear 32 is integrated on the first vibration damper. In this way, the first vibration damper integrates the first gear 32 and the bolts connected to the engine crankshaft 21 and other structures.

[0046] In some embodiments, see Figure 1The generator 10 further includes a generator rotor shaft 12, and a first bearing 13 is rotatably connected to both the generator input shaft 11 and the generator rotor shaft 12;

[0047] The outer rings of the first bearings 13 are sleeved with silent bushings 40. Thus, by arranging the first bearings 13 on both the generator rotor shaft 12 and the generator input shaft 11, and sleeved with silent bushings 40 on the outer rings of the first bearings 13, the vibration noise of the first bearings 13 when rotating is effectively reduced.

[0048] In some embodiments, see Figure 1 The first connecting assembly further comprises two second bearings 34,

[0049] The two second bearings 34 are rotatably connected to the two ends of the first gear 32 in the axial direction, and the outer rings of the second bearings 34 are sleeved with a silent bushing 40. In this way, by arranging the silent bushing 40 on the outer surface of the second bearing 34, the silent bushing 40 has a good vibration absorption effect, thereby effectively reducing the vibration noise when the second bearing 34 rotates.

[0050] A hybrid box, see Figure 2 and Figure 3 The hybrid box is provided with a housing, in which the transmission assembly of the generator 10 of the new energy hybrid vehicle is provided, and the inner cavity of the housing is fixedly connected with a silent bushing 40 by casting. In this way, the housing and the silent bushing 40 are connected together by casting, which effectively reduces the vibration of the silent bushing 40 in the housing, that is, reduces the vibration noise generated between the silent bushing 40 and the housing, and effectively improves the vibration noise of the shaft system; the silent bushing 40 also effectively reduces the influence of the load increase and temperature change on the bearing clearance.

[0051] Specifically, the shell is made of cast iron, and the silent bushing 40 is also made of cast iron, but the two are different; the silent bushing 40 is a mute material, which has a good vibration absorption effect and strong anti-deformation ability; before casting the shell, the silent bushing 40 is first placed in the casting cavity, and then the shell is cast, so that the shell and the silent bushing 40 are connected together by casting. In the prior art, the shell is often cast from aluminum alloy, which has low strength, large deformation, and no bushing, and large vibration noise.

[0052] In some embodiments, see Figure 2 and Figure 3 , a rotating assembly is also provided in the housing, and the rotating assembly includes:

[0053] A driving motor 50 is used to drive the wheel 60 to rotate;

[0054] The second connection assembly is used to connect the drive motor 50 and the wheel 60, and the second connection assembly includes a differential 71 and a second shock absorber. In this way, by using the differential 71 and the second shock absorber, the vibration of the shaft system is effectively reduced, that is, the vibration in the system is effectively reduced.

[0055] In some embodiments, see Figure 2 The wheel 60 is provided with a rotating shaft in the axial direction, and the rotating shaft is connected to the differential 71; the second connecting assembly includes a third gear 72 sleeved on the rotating shaft, and the third gear 72 is integrated on the second shock absorber. In this way, the transmission of vibration is reduced, the stability of the vehicle is improved, and the vibration inside the second connecting assembly is reduced, thereby reducing the vibration noise of the hybrid box.

[0056] Specifically, the second connecting assembly further includes a fourth gear 73 and a reduction gear set 74, wherein the fourth gear 73 is connected to the drive motor output shaft 52 of the drive motor 50, and the third gear 72 and the fourth gear 73 are connected via the reduction gear set 74, wherein the reduction gear set 74 includes two axially connected and synchronously rotating gears, the reduction gear set 74 meshes with the fourth gear 73 and achieves a primary reduction effect, and the reduction gear set 74 meshes with the third gear 72 and achieves a secondary reduction effect. The two-stage gear ratio is set to reduce the diameter of the gear and reasonably utilize the space in the hybrid case housing.

[0057] In some embodiments, see Figure 2 The driving motor 50 includes a driving motor rotor shaft 51 and a driving motor output shaft 52. The driving motor rotor shaft 51 and the driving motor output shaft 52 are both rotatably connected with a third bearing 53. The outer ring of the third bearing 53 is sleeved with a silent bushing 40. In this way, the silent bushing 40 has a noise reduction effect when the third bearing 53 rotates, effectively reducing the vibration noise of the third bearing 53; the driving motor rotor shaft 51 plays a supporting role.

[0058] When using, see Figure 2 and Figure 3 In the present application, the following methods are provided in the hybrid case to reduce vibration and noise: the engine 20 is connected to the torque limiter 31, and the first gear 32 is integrated on the first shock absorber; the differential 71 is connected to the rotating shaft of the wheel 60, and the third gear 72 is integrated on the second shock absorber; a silent bushing 40 is sleeved outside the first bearing 13, the second bearing 34 and the third bearing 53; the silent bushing 40 is cast together with the shell of the hybrid case.

[0059] Therefore, the present application adds optimization measures to the key links that affect the vibration of the shaft system: without making major design changes to the motor and the engine 20, only a small cost change is made to optimize some parts of the system, thereby effectively improving the vibration and noise of the powertrain.

[0060] Specifically, all the silent bushings 40 of the present application are cast together with the shell of the hybrid box. The silent bushings 40 effectively reduce the impact of load increase and temperature change on the bearing clearance, and effectively improve the vibration noise of the powertrain.

[0061] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Therefore, the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0062] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A generator transmission assembly for a new energy hybrid vehicle, characterized in that: The generator (10) transmission assembly comprises: A generator (10) and an engine (20), wherein the engine (20) is used to drive the generator (10) to generate electricity; A first connecting component connects the generator (10) and the engine (20) by means of gear transmission, wherein the first connecting component comprises a torque limiter (31) and a first vibration damper, wherein the torque limiter (31) is arranged on the engine (20), and the first vibration damper is arranged on an engine crankshaft (21) of the engine (20).

2. The generator transmission assembly of the new energy hybrid vehicle according to claim 1, characterized in that: The torque limiter (31) comprises a first inner ring and a first outer ring which are rotatable relative to each other, the engine (20) comprises a flywheel and the engine crankshaft (21), the first inner ring is connected to the engine crankshaft (21), and the first outer ring is connected to the flywheel.

3. The generator transmission assembly of the new energy hybrid vehicle according to claim 1, characterized in that: The first connection component also includes: a first gear (32), wherein the axial direction of the first gear (32) is connected to the engine crankshaft (21), A second gear (33), the second gear (33) is axially connected to the generator input shaft (11) of the generator (10), and the second gear (33) is meshed with the first gear (32).

4. The generator transmission assembly of the new energy hybrid vehicle according to claim 3, characterized in that: The first gear (32) is integrated on the first vibration absorber.

5. The generator transmission assembly of the new energy hybrid vehicle according to claim 3, characterized in that: The generator (10) further comprises a generator rotor shaft (12), and a first bearing (13) is rotatably connected to both the generator input shaft (11) and the generator rotor shaft (12); The outer rings of the first bearings (13) are sleeved with noise-reducing bushings (40).

6. The generator transmission assembly of the new energy hybrid vehicle according to claim 3, characterized in that: The first connecting assembly also includes two second bearings (34), The two second bearings (34) are rotatably connected to the two axial ends of the first gear (32) respectively, and the outer rings of the second bearings (34) are each sleeved with a silent bushing (40).

7. A hybrid box, the hybrid box having a housing, characterized in that: The housing is provided with a generator transmission assembly of a new energy hybrid vehicle as claimed in any one of claims 1 to 6, and the inner cavity of the housing is fixedly connected with a silent bushing (40) by casting.

8. The hybrid case according to claim 7, characterized in that: A rotating assembly is also provided in the housing, and the rotating assembly includes: A driving motor (50) for driving the wheel (60) to rotate; A second connection assembly is used to connect the drive motor (50) and the wheel (60), and the second connection assembly includes a differential (71) and a second shock absorber.

9. The hybrid case according to claim 8, characterized in that: The wheel (60) is provided with a rotating shaft in the axial direction, and the rotating shaft is connected to the differential (71); the second connecting assembly comprises a third gear (72) sleeved on the rotating shaft, and the third gear (72) is integrated on the second shock absorber.

10. The hybrid case according to claim 8, characterized in that: The drive motor (50) comprises a drive motor rotor shaft (51) and a drive motor output shaft (52), the drive motor rotor shaft (51) and the drive motor output shaft (52) are both rotatably connected to a third bearing (53), and the outer ring of the third bearing (53) is sleeved with the silent bushing (40).

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