Longitudinal extended-range hybrid gearbox

Abstract

The utility model discloses a longitudinal range-extending hybrid gearbox which comprises an input shaft, a planetary gear mechanism, a generator, a driving motor, a first reduction gear mechanism, a second reduction gear mechanism and an output shaft, the input shaft is connected with the generator through the planetary gear mechanism, and the generator is electrically connected with the driving motor. The planetary gear mechanism, the generator and the driving motor are coaxially arranged, and a motor shaft of the driving motor is connected with the output shaft through the first reduction gear mechanism and the second reduction gear mechanism. The longitudinal range-extending hybrid gearbox provided by the utility model can meet the driving requirement of the whole vehicle; proper gears can be selected for power output according to different vehicle speeds; the functions of the generator and the driving motor can be respectively and independently realized; through the arrangement of the planetary gear mechanism, the first reduction gear mechanism and the second reduction gear mechanism, the energy consumption of the whole vehicle is optimized, the occupied space of the hybrid gearbox is reduced, the arrangement space of a battery is increased, and the space utilization rate of the vehicle is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile drive transmission, especially relates to longitudinal increase range hybrid gearbox. BACKGROUND

[0002] For hybrid gearbox, lightweight can effectively improve fuel economy. The axial dimension of the traditional series-parallel hybrid drive structure is large, and the whole box volume and weight are large. SUMMARY

[0003] The utility model discloses a longitudinal increase range hybrid gearbox can solve one or more of the above prior art problems.

[0004] The longitudinal increase range hybrid gearbox provided by the utility model, including: input shaft, planetary gear mechanism, generator, drive motor, first reduction gear mechanism, second reduction gear mechanism and output shaft, the input shaft is connected with the generator through the planetary gear mechanism, the generator is electrically connected with the drive motor, the planetary gear mechanism, the generator and the drive motor are coaxial arrangement, the motor shaft of drive motor is connected with the output shaft through the first reduction gear mechanism and the second reduction gear mechanism, the second reduction gear mechanism includes parallel shaft, first gear group, second gear group and shift mechanism, the parallel shaft is connected with the first reduction gear mechanism, the first gear group, the second gear group and the shift mechanism are arranged on the parallel shaft, the shift mechanism can realize gear switching with the first gear group and the second gear group, the first gear group and the second gear group are connected with the output shaft respectively, the motor shaft of drive motor, the parallel shaft and the output shaft are parallel arrangement.

[0005] In some embodiments, a shock absorber is provided on the input shaft.

[0006] In some embodiments, the planet carrier of the planetary gear mechanism is connected with the input shaft, the sun gear of the planetary gear mechanism is connected with the motor shaft of the generator, and the ring gear of the planetary gear mechanism is connected with the housing.

[0007] In some embodiments, the first reduction gear mechanism includes a first gear and a second gear, the first gear is engaged with the second gear, the first gear is connected with the motor shaft of the drive motor, and the second gear is connected with the parallel shaft.

[0008] In some embodiments, the first gear group includes a third gear and a fourth gear, the third gear and the fourth gear are engaged, the third gear is arranged on the parallel shaft, and the fourth gear is connected with the output shaft.

[0009] In some embodiments, the second gear group includes a fifth gear and a sixth gear, the fifth gear and the sixth gear are engaged, the fifth gear is arranged on the parallel shaft, and the sixth gear is connected with the output shaft.

[0010] The longitudinal range-increasing hybrid gearbox provided by the utility model meets the whole vehicle driving demand through coaxial arrangement of the planetary gear mechanism, the generator and the driving motor, can select appropriate gear according to different vehicle speeds to carry out power output, adopts electric connection between the generator and the driving motor, so that the electric energy generated by the generator can meet the driving demand of the driving motor, meanwhile, the power generation function of the generator and the driving function of the driving motor are decoupled, so that the functions of the generator and the driving motor can be realized independently, through arrangement of the planetary gear mechanism, the first speed reduction gear mechanism and the second speed reduction gear mechanism, the whole vehicle energy consumption is optimized, the hybrid gearbox occupied space is reduced, the battery arrangement space is increased, and the vehicle space utilization is improved.

[0011] In addition, in the technical scheme of the utility model, any unexplained part can be realized by using conventional means in the field. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0013] Figure 1 The structure schematic diagram of the longitudinal range-increasing hybrid gearbox provided by the embodiments of the utility model is shown. DETAILED DESCRIPTION

[0014] The terms "include" and "have" and any variations thereof in the utility model specification and claims are intended to cover the non-exclusive inclusion, for example, the process, method, system, product or equipment including a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units that are not clearly listed or inherent to these processes, methods, systems, products or equipment.

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the following will combine the drawings in the embodiments of the utility model, clearly and completely describe the technical scheme in the embodiments of the utility model, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0016] Embodiment:

[0017] Reference is made to the drawings in the specification Figure 1The utility model embodiment provides a kind of longitudinal increase range hybrid transmission, comprising: input shaft 1, planetary gear mechanism 2, generator 3, drive motor 4, first reduction gear mechanism, second reduction gear mechanism, output shaft 7, shock absorber 8 and transmission case.

[0018] Wherein, one end of input shaft 1 is connected with engine 9, the other end of input shaft 1 is connected with generator 3 by planetary gear mechanism 2, shock absorber 8 is arranged on input shaft 1, and shock absorber 8 is used to realize the filtering torque fluctuation of engine 9 or generator 3.

[0019] Generator 3 is electrically connected with drive motor 4, and the motor shaft of drive motor 4 is connected with output shaft 7 through first reduction gear mechanism and second reduction gear mechanism.

[0020] Planetary gear mechanism 2, generator 3 and drive motor 4 are coaxially arranged.Planetary gear mechanism 2 is arranged on the side of generator 3 close to engine 9, drive motor 4 is arranged on the side of generator 3 away from planetary gear mechanism 2, and first reduction gear mechanism and second reduction gear mechanism are arranged on the side of drive motor 4 away from generator 3.Output shaft 7 and the motor shaft of drive motor 4 are arranged in parallel, and the power output direction of output shaft 7 can be arranged towards the direction of engine 9, so as to meet the demand of front axle drive of whole vehicle.

[0021] Planetary gear mechanism 2 includes carrier, ring gear and sun gear.The carrier of planetary gear mechanism 2 is connected with input shaft 1, the sun gear of planetary gear mechanism 2 is connected with the motor shaft of generator 3, and the ring gear of planetary gear mechanism 2 is fixed on the shell.Thus, the speed-up design from engine 9 to generator 3 is realized, a larger range of speed-up ratio from engine 9 to generator 3 can be realized through planetary gear mechanism 2, the higher efficiency power generation function of engine 9 and generator 3 is realized, and the coaxial arrangement of input and output can be realized by planetary gear mechanism 2.Compared with the traditional generator speed-up structure, shorter radial and axial space is realized, which is more conducive to the arrangement of longitudinal increase range hybrid transmission and the line of sight of whole vehicle lightening.

[0022] Second reduction gear mechanism includes parallel shaft 61, first gear group, second gear group and shift mechanism 62.The motor shaft of drive motor 4, parallel shaft 61 and output shaft 7 are arranged in parallel, parallel shaft 61 is connected with first reduction gear mechanism, first gear group, second gear group and shift mechanism 62 are arranged on parallel shaft 61, shift mechanism 62 can cooperate with first gear group and second gear group to realize gear shifting, and first gear group and second gear group are connected with output shaft 7 respectively.

[0023] The first reduction gear mechanism comprises a first gear 51 and a second gear 52, the first gear 51 is engaged with the second gear 52, the first gear 51 is connected with the motor shaft of the driving motor 4, and the second gear 52 is connected with the parallel shaft 61.

[0024] The first gear shifting gear set comprises a third gear 63 and a fourth gear 64, the third gear 63 is engaged with the fourth gear 64, the third gear 63 is arranged on the parallel shaft 61, and the fourth gear 64 is connected with the output shaft 7.

[0025] The second gear shifting gear set comprises a fifth gear 65 and a sixth gear 66, the fifth gear 65 is engaged with the sixth gear 66, the fifth gear 65 is arranged on the parallel shaft 61, and the sixth gear 66 is connected with the output shaft 7.

[0026] When the gear shifting mechanism 62 is engaged with the fifth gear 65, the torque of the driving motor 4 is output through the output shaft 7 after the first-stage reduction of the first gear 51 to the second gear 52 and the second-stage reduction of the fifth gear 65 to the sixth gear 66.

[0027] When the gear shifting mechanism 62 is engaged with the third gear 63, the torque of the driving motor 4 is output through the output shaft 7 after the first-stage reduction of the first gear 51 to the second gear 52 and the second-stage reduction of the third gear 63 to the fourth gear 64.

[0028] When the gear shifting mechanism 62 is not engaged with the third gear 63 or the fifth gear 65, the gear shifting mechanism 62 is in the neutral gear, at this time, the driving motor 4 has no power output, and the rotating speed of the output shaft 7 is irrelevant to the state of the driving motor 4.

[0029] When the battery of the vehicle has sufficient electric energy, the engine 9 and the generator 3 are stopped, and the battery electric energy drives the driving motor 4 to realize power output.

[0030] When the battery of the vehicle has insufficient electric energy, the engine 9 drives the generator 3 to generate electricity through the shock absorber 8 and the planetary gear mechanism 2, and the electric energy generated by the generator 3 is used to drive the driving motor 4 to meet the whole vehicle driving demand or is stored in the battery.

[0031] At low vehicle speed, the driving motor 4 uses the first gear to realize power output, so as to meet the large torque demand of whole vehicle acceleration and climbing; at high vehicle speed, the driving motor 4 uses the second gear to realize power output, so as to reduce the rotating speed of the driving motor 4 and realize the function of low energy consumption of the whole vehicle at high vehicle speed; when the vehicle is decelerated, the kinetic energy is recovered through the driving motor 4; when the front axle of the vehicle has no power demand, the gear shifting mechanism 62 is arranged in the neutral gear, so as to disconnect the connection between the driving motor 4 and the output shaft 7, at this time, the loss of the driving motor 4 can be reduced to zero.

[0032] The longitudinal range-increasing hybrid transmission has the following beneficial effects:

[0033] By coaxial arrangement of the planetary gear mechanism 2, the generator 3 and the drive motor 4, the whole vehicle driving demand is met; power output can be selected according to different vehicle speeds; the generator 3 and the drive motor 4 are electrically connected, so that the power generated by the generator 3 can meet the driving demand of the drive motor 4, and the power generation function of the generator 3 and the driving function of the drive motor are decoupled, so that the functions of the generator 3 and the drive motor 4 can be realized independently; by arranging the planetary gear mechanism 2, the first reduction gear mechanism and the second reduction gear mechanism, the whole vehicle energy consumption is optimized, the space occupied by the hybrid transmission is reduced, the space for arranging the battery is increased, the vehicle space utilization is improved, and the hybrid transmission can be applied to SUVs, pick-ups or light trucks.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. 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. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0035] The relative arrangement of the components and steps, numerical expressions, and numerical values set forth in these embodiments are not intended to limit the scope of the present application, unless otherwise specifically stated. It should be understood that the sizes of the various parts shown in the drawings are not necessarily to scale, and that techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the authorized specification, if appropriate.

[0036] In addition, it should be noted that the use of the terms "first", "second", and the like, to describe various components, is merely intended to differentiate the respective components, and does not have a special meaning unless otherwise stated. Therefore, it should not be understood as limiting the scope of protection of the present application.

[0037] The above is only a preferred embodiment of the present disclosure, and is not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A longitudinal range-extending hybrid transmission, characterized in that, The application relates to a transmission mechanism, which comprises an input shaft (1), a planetary gear mechanism (2), a generator (3), a driving motor (4), a first reduction gear mechanism, a second reduction gear mechanism and an output shaft (7). The input shaft (1) is connected with the planetary gear mechanism (2), the generator (3) is electrically connected with the driving motor (4), the planetary gear mechanism (2), the generator (3) and the driving motor (4) are coaxially arranged, the motor shaft of the driving motor (4) is connected with the output shaft (7) through the first reduction gear mechanism and the second reduction gear mechanism, the second reduction gear mechanism comprises a parallel shaft (61), a first gear group, a second gear group and a gear shifting mechanism (62), the parallel shaft (61) is connected with the first reduction gear mechanism, the first gear group, the second gear group and the gear shifting mechanism (62) are arranged on the parallel shaft (61), the gear shifting mechanism (62) can be selectively matched with the first gear group and the second gear group to realize gear shifting, the first gear group and the second gear group are connected with the output shaft (7) respectively, the motor shaft of the driving motor (4), the parallel shaft (61) and the output shaft (7) are arranged in parallel. A shock absorber (8) is arranged on the input shaft (1). The planet carrier of the planetary gear mechanism (2) is connected with the input shaft (1), the sun gear of the planetary gear mechanism (2) is connected with the motor shaft of the generator (3), and the ring gear of the planetary gear mechanism (2) is connected with a housing. The first reduction gear mechanism comprises a first gear (51) and a second gear (52), the first gear (51) is meshed with the second gear (52), the first gear (51) is connected with the motor shaft of the driving motor (4), and the second gear (52) is connected with the parallel shaft (61). The first gear group comprises a third gear (63) and a fourth gear (64), the third gear (63) is meshed with the fourth gear (64), the third gear (63) is arranged on the parallel shaft (61), and the fourth gear (64) is connected with the output shaft (7).

2. The longitudinally mounted extended-range hybrid transmission of claim 1, wherein, The second gear group comprises a fifth gear (65) and a sixth gear (66), the fifth gear (65) is meshed with the sixth gear (66), the fifth gear (65) is arranged on the parallel shaft (61), and the sixth gear (66) is connected with the output shaft (7).

3. The longitudinally mounted extended-range hybrid transmission of claim 1, wherein, ​ 4. The longitudinally mounted extended-range hybrid transmission of claim 1, wherein, ​ 5. The longitudinally mounted extended-range hybrid transmission of claim 1, wherein, ​ 6. The longitudinally mounted extended-range hybrid transmission of claim 1, wherein, ​

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