Automobile hybrid power system

Abstract

The utility model discloses an automobile hybrid power system which comprises an engine, a first brake, a second brake, a third brake, a first clutch, a second clutch, a motor, a planetary gear mechanism and an output gear mechanism. According to the automobile hybrid power system, the engine and the motor are connected through the planetary gear mechanism, meanwhile, power output is carried out through the output gear mechanism, three driving modes of a pure electric driving mode, a range extending power generation mode and a hybrid power mode can be achieved, and stepless speed regulation is achieved while torque output is carried out; the three driving modes can be freely switched in a full vehicle speed range; a pure electric drive mode, a range extending mode, a power dividing mode and two direct drive modes with different speed ratios can be achieved, loss is reduced, and the efficiency of an automobile hybrid power system is improved. And only one motor is used while a multi-drive mode is realized, so that the cost is reduced, and the economic applicability of the automobile hybrid power system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hybrid power automobile drive transmission technical field especially relates to automobile hybrid power system. BACKGROUND

[0002] The hybrid power automobile is the power battery's electric energy through the motor and certain form engine carries out the specific form fusion, realizes the whole vehicle drive power system form. The hybrid power has multiple configuration mode, can satisfy the whole vehicle's different function and performance demand.

[0003] The existing hybrid power range increasing system generally adopts the generator connected with the engine, under the condition that the whole vehicle needs the electric quantity supplement, carries out the energy supplement through the control generator, this engine-generator range increasing system generally can only carry out the simple power generation, cannot realize the whole vehicle front axle, especially four drive vehicle type to the function requirement of power system. And the existing hybrid four drive scheme generally needs to adopt the complex hybrid assembly, cooperates the range divider and the electric rear axle to realize the complete four drive function, the structure is complex, and the cost is very high. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing automobile hybrid power system, can solve one or more of the above prior art problems.

[0005] The utility model provides a automobile hybrid power system, include: engine, first brake, second brake, third brake, first clutch, second clutch, motor, planetary gear mechanism and output gear mechanism, the output shaft of engine is connected with the planet carrier of planetary gear mechanism, the planet carrier of planetary gear mechanism is connected with the casing through second brake, the sun gear of planetary gear mechanism is connected with the motor shaft of motor, the sun gear of planetary gear mechanism is connected with the casing through first brake, the gear ring of planetary gear mechanism is connected with the casing through third brake, first clutch is connected with planetary gear mechanism, when first clutch closes, the planet carrier of planetary gear mechanism, gear ring and sun gear can realize the same speed operation, the gear ring of planetary gear mechanism is connected through second clutch and output gear mechanism.

[0006] In some embodiments, a shock absorber is provided on the output shaft of the engine.

[0007] In some embodiments, the gear ring of the planetary gear mechanism is connected to the planet carrier of the planetary gear mechanism through the first clutch, or the gear ring of the planetary gear mechanism is connected to the sun gear of the planetary gear mechanism through the first clutch, or the sun gear of the planetary gear mechanism is connected to the planet carrier of the planetary gear mechanism through the first clutch.

[0008] In some embodiments, the output gear mechanism comprises a first gear, a second gear and a third gear, the ring gear of the planetary gear mechanism is connected with the first gear through the second clutch, the first gear is engaged with the second gear, the second gear is engaged with the third gear, and the third gear is an output end of the automobile hybrid power system.

[0009] In some embodiments, the output gear mechanism is connected with the differential through an output bevel gear mechanism, and an output shaft of the differential is arranged perpendicularly to an axis of the engine.

[0010] In some embodiments, the output bevel gear mechanism comprises a fourth gear and a fifth gear, the fourth gear is connected with the output gear mechanism, the fourth gear is engaged with the fifth gear, and the fifth gear is connected with the differential.

[0011] In some embodiments, the output gear mechanism is connected with the differential through a transmission shaft.

[0012] In some embodiments, the transmission shaft is provided with a first universal wheel and a second universal wheel.

[0013] In some embodiments, the output gear mechanism is connected with the differential, and an output shaft of the differential is arranged in parallel to an axis of the engine.

[0014] In some embodiments, the planetary gear mechanism is arranged on a side of the motor away from the engine.

[0015] The automobile hybrid power system provided by the utility model connects the engine and the motor through the planetary gear mechanism, simultaneously performs power output through the output gear mechanism, can realize three driving modes of pure electric driving mode, range extending power generation mode and hybrid mode, realizes stepless speed regulation while performing torque output, three driving modes can be freely switched in a full vehicle speed range section, so that the automobile hybrid power system has greater flexibility and higher functional coverage, through cooperation of the first brake, the second brake, the third brake, the first clutch and the second clutch, one pure electric driving mode, one range extending mode, one power split mode and two different speed ratio direct drive modes can be realized, so that the whole vehicle has better power performance, meanwhile, loss is reduced, and efficiency of the automobile hybrid power system is improved; while realizing multiple driving modes, only one motor is used, cost is reduced, and economic applicability of the automobile hybrid power system is improved.

[0016] In addition, in the technical scheme of the utility model, any part not specially described can be realized by adopting conventional means in the field. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0018] Figure 1 The structure schematic diagram of the automobile hybrid power system provided by the present application is shown.

[0019] Figure 2 The structure schematic diagram of the automobile hybrid power system provided by the present application is shown.

[0020] Figure 3 The structure schematic diagram of the automobile hybrid power system provided by the present application is shown. DETAILED DESCRIPTION

[0021] The terms "comprising" and "having" and any variations thereof in the present application and claims are intended to cover non-exclusive inclusion, for example, a process, method, system, product or equipment containing a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, system, product or equipment.

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] Embodiment:

[0024] Reference is made to the accompanying drawings in the description Figure 1 The present application provides an automobile hybrid power system, comprising: an engine 1, a first brake 2, a second brake 3, a third brake 4, a first clutch 5, a second clutch 6, a motor 7, a planetary gear mechanism 8 and an output gear mechanism.

[0025] The output shaft of the engine 1 is connected to the planet carrier P of the planetary gear mechanism 8 through the shock absorber 9, and the motor shaft of the motor 7 is connected to the sun gear S of the planetary gear mechanism 8, and the ring gear R of the planetary gear mechanism 8 serves as the output end of the planetary gear mechanism 8. Thus, the engine 1 and the motor 7 are connected through the planetary gear mechanism 8, the shock absorber 9 is connected to the output shaft of the engine 1, and the torque fluctuation of the engine 1 or the motor 7 can be filtered.

[0026] The sun gear S of the planetary gear mechanism 8 is connected to the housing through the first brake 2, that is, one end of the first brake 2 is connected to the housing of the automobile hybrid power system, and the other end is connected to the sun gear S of the planetary gear mechanism 8. Thus, the first brake 2 can lock the sun gear S of the planetary gear mechanism 8, and when the first brake 2 is closed, the sun gear S is locked.

[0027] The planet carrier P of the planetary gear mechanism 8 is connected to the housing through the second brake 3, that is, one end of the second brake 3 is connected to the housing of the automobile hybrid power system, and the other end is connected to the planet carrier P of the planetary gear mechanism 8. Thus, the second brake 3 can lock the planet carrier P of the planetary gear mechanism 8, and when the second brake 3 is closed, the planet carrier P is locked.

[0028] The ring gear R of the planetary gear mechanism 8 is connected to the housing through the third brake 4, that is, one end of the third brake 4 is connected to the housing of the automobile hybrid power system, and the other end is connected to the ring gear R of the planetary gear mechanism 8. Thus, the third brake 4 can lock the ring gear R of the planetary gear mechanism 8, and when the third brake 4 is closed, the ring gear R is locked.

[0029] The first clutch 5 is connected to the planetary gear mechanism 8, specifically, the connection mode of the first clutch 5 can be that the ring gear R of the planetary gear mechanism 8 is connected to the planet carrier P of the planetary gear mechanism 8 through the first clutch 5, or the ring gear R of the planetary gear mechanism 8 is connected to the sun gear S of the planetary gear mechanism 8 through the first clutch 5, or the sun gear S of the planetary gear mechanism 8 is connected to the planet carrier P of the planetary gear mechanism 8 through the first clutch 5. Thus, the first clutch 5 can lock two of the ring gear R, the planet carrier P or the sun gear S of the planetary gear mechanism 8, and realize the same speed operation of the ring gear R, the planet carrier P or the sun gear S. In this embodiment, one end of the first clutch 5 is connected to the ring gear R, and the other end is connected to the planet carrier P, and when the first clutch 5 is closed, the planet carrier P, the ring gear R and the sun gear S rotate at the same speed.

[0030] The ring gear R of the planetary gear mechanism 8 is connected with the output gear mechanism through the second clutch 6. The output gear mechanism can be the output end of the automobile hybrid power system. The output gear mechanism can include a first gear 91, a second gear 92 and a third gear 93, the ring gear R of the planetary gear mechanism 8 is connected with the first gear 91 through the second clutch 6, the first gear 91 is engaged with the second gear 92, the second gear 92 is engaged with the third gear 93, and the third gear 93 is the output end of the automobile hybrid power system. Thus, the second clutch 6 connects the ring gear R of the planetary gear mechanism 8 and the output gear mechanism, the power of the ring gear R is output through the second clutch 6, the first gear 91, the second gear 92 and the third gear 93, when the second clutch 6 is closed, the power of the ring gear R is output through the second clutch 6, the first gear 91, the second gear 92 and the third gear 93, when the second clutch 6 is disconnected, the power of the ring gear R is disconnected with the output end of the automobile hybrid power system, and the operation of the planetary gear mechanism 8 is irrelevant to the output end.

[0031] In an optional embodiment, the output gear mechanism is connected with the differential 10 through an output bevel gear mechanism, and the output shaft 11 of the differential 10 is arranged perpendicularly to the axis of the engine 1.

[0032] The output bevel gear mechanism includes a fourth gear 94 and a fifth gear 95, the fourth gear 94 is connected with the output gear mechanism, the fourth gear 94 and the fifth gear 95 are engaged, and the fifth gear 95 is connected with the differential 10. Thus, the power of the ring gear R of the planetary gear mechanism 8 is output through the second clutch 6, the first gear 91, the second gear 92, the third gear 93, the fourth gear 94 and the fifth gear 95. Thus, the driving of the wheels can be realized.

[0033] In an optional embodiment, the output bevel gear mechanism can be integrated with the third gear 93. Thus, the overall structure is more compact, and the applicability is stronger.

[0034] In an optional embodiment, the output bevel gear mechanism can be integrated with the third gear 93 and the differential.

[0035] Referring to the drawings attached Figure 1 The direction of the output shaft 11 of the differential 10 can be arranged perpendicularly to the axis of the engine 1, thus the automobile hybrid power system is more suitable for being arranged on a longitudinal vehicle platform.

[0036] Referring to the drawings attached Figure 2 The output gear mechanism can be connected with the differential 10 through a transmission shaft 12, the length of the transmission shaft 12 can be adjusted according to actual needs, at this time the differential 10 and the automobile hybrid power system are two independent components. Thus, the automobile hybrid power system has better flexibility and is more convenient to arrange.

[0037] The first universal joint 121 and the second universal joint 122 can be arranged on the transmission shaft 12, so that the flexibility of the automobile hybrid power system is further enhanced.

[0038] With reference to the accompanying drawings Figure 3 The output gear mechanism is connected with the differential 10, and the direction of the output shaft 11 of the differential 10 can be parallel to the axial direction of the engine 1. Therefore, the automobile hybrid power system is more suitable for being arranged on a transverse vehicle platform.

[0039] In the optional embodiment, the planetary gear mechanism 8 is arranged on the side, away from the engine 1, of the motor 7. The axis of the first gear 91, the axis of the second gear 92 and the axis of the third gear 93 are parallel to the motor shaft of the motor 7 and the axis of the planetary gear mechanism 8.

[0040] The automobile hybrid power system provided by the embodiment of the utility model can realize the following driving modes:

[0041] Pure electric driving mode, that is, the engine 1 does not work, the second brake 3 is closed, the second clutch 6 is closed, the motor 7 realizes power output through the planetary gear mechanism 8 and the output gear mechanism, and then realizes wheel driving. The pure electric driving mode can cover the pure electric driving demand in the whole vehicle speed range and the pure electric function demand of the whole vehicle forward and backward.

[0042] Extended range power generation mode, that is, the engine 1 and the motor 7 work simultaneously, and the motor 7 works in the power generation mode. The third brake 4 is closed to lock the ring gear R of the planetary gear mechanism 8, that is, the output end of the planetary gear mechanism 8 is fixed. The second clutch 6 is opened, and a fixed speed ratio is formed between the engine 1 and the motor 7. The power is not transmitted to the output end of the automobile hybrid power system.

[0043] Hybrid mode, that is, the engine 1 and the motor 7 work simultaneously. The output power of the engine 1 is output through the output gear mechanism. In the hybrid mode, by controlling the first brake 2, the first clutch 5 and the second clutch 6, the following working modes can be further realized:

[0044] When the first brake 2 and the first clutch 5 are opened and the second clutch 6 is closed, the motor 7 can perform stepless dynamic speed regulation for the engine 1. The power of the engine 1 is output through the output gear mechanism after passing through the ring gear R of the planetary gear mechanism 8, so that the power split mode is realized.

[0045] When the first brake 2 is opened, the first clutch 5 and the second clutch 6 are closed, the planetary gear mechanism 8 is locked, the engine 1 and the motor 7 keep the same rotating speed, therefore the engine 1 and the motor 7 operate at the same speed, the engine 1 drives, the motor 7 can enter the power generation mode or the power driving mode, the rotating speed of the engine 1 is output through the output gear mechanism, namely the first locked direct drive gear, when the motor 7 is in the power driving mode, the output torque of the automobile hybrid power system is the sum of the torque of the engine 1 and the torque of the motor 7, the output capacity of the automobile hybrid power system is greater than that in other working modes, at this moment, the automobile hybrid power system is in the maximum capacity state, and better power performance is obtained.

[0046] When the first brake 2 is closed, the first clutch 5 is opened and the second clutch 6 is closed, the motor shaft of the motor 7 is locked, at this moment, the motor 7 has zero rotating speed, the engine 1 drives alone, the engine 1 to the gear ring R is fixed speed ratio, the planetary gear mechanism 8 is in the speed increasing state, power is output through the planetary gear mechanism 8 and the output gear mechanism, namely the second locked direct drive gear, at this moment, the motor 7 has no loss, and the automobile hybrid power system is more efficient.

[0047] The automobile hybrid power system has the following beneficial effects:

[0048] The automobile hybrid power system disclosed by the utility model connects the engine and the motor through the planetary gear mechanism, simultaneously outputs power through the output gear mechanism, can realize three driving modes of pure electric driving mode, range extending power generation mode and hybrid mode, realizes stepless speed regulation while outputting torque, can freely switch the three driving modes in the whole vehicle speed range, makes the automobile hybrid power system have greater flexibility and higher functional coverage, cooperates the first brake, the second brake, the third brake, the first clutch and the second clutch, can realize one pure electric driving mode, one range extending mode, one power split mode and two direct drive modes with different speed ratios, makes the whole vehicle have better power performance, reduces loss, improves the efficiency of the automobile hybrid power system, realizes multiple driving modes while using only one motor, reduces cost, improves the economic applicability of the automobile hybrid power system.

[0049] It is to 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 consistent 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, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0050] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the following claims, along with full equivalents thereof.

[0051] In addition, it should be noted that the use of "first", "second", etc., to describe a component having a given number does not limit, in any way, the scope of the present application, unless otherwise stated herein. Additionally, it is to be understood that the use of "first", "second", etc., to describe a component having a given number does not limit, in any way, the scope of the present application, unless otherwise stated herein.

[0052] The above description is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the following claims, along with full equivalents thereof.

Claims

1. A hybrid powertrain system for an automobile, characterized by, Comprise: Engine (1), first brake (2), second brake (3), third brake (4), first clutch (5), second clutch (6), motor (7), planetary gear mechanism (8) and output gear mechanism, The output shaft of the engine (1) is connected with the planet carrier of the planetary gear mechanism (8), and the planet carrier of the planetary gear mechanism (8) is connected with the housing through the second brake (3), The sun gear of the planetary gear mechanism (8) is connected with the motor shaft of the motor (7), and the sun gear of the planetary gear mechanism (8) is connected with the housing through the first brake (2), The ring gear of the planetary gear mechanism (8) is connected with the housing through the third brake (4), The first clutch (5) is connected with the planetary gear mechanism (8), and when the first clutch (5) is closed, the planet carrier, ring gear and sun gear of the planetary gear mechanism (8) can rotate at the same speed, The ring gear of the planetary gear mechanism (8) is connected with the output gear mechanism through the second clutch (6).

2. The automotive hybrid system according to claim 1, characterized by, The output shaft of the engine (1) is provided with a shock absorber (9).

3. The automotive hybrid system of claim 1, wherein, The ring gear of the planetary gear mechanism (8) is connected with the planet carrier of the planetary gear mechanism (8) through the first clutch (5), or the ring gear of the planetary gear mechanism (8) is connected with the sun gear of the planetary gear mechanism (8) through the first clutch (5), or the sun gear of the planetary gear mechanism (8) is connected with the planet carrier of the planetary gear mechanism (8) through the first clutch (5).

4. The automotive hybrid system of claim 1, wherein, The output gear mechanism comprises a first gear (91), a second gear (92) and a third gear (93), the ring gear of the planetary gear mechanism (8) is connected with the first gear (91) through the second clutch (6), the first gear (91) is engaged with the second gear (92), the second gear (92) is engaged with the third gear (93), and the third gear (93) serves as the output end of the automobile hybrid power system.

5. The automotive hybrid system of claim 1, wherein, The output gear mechanism is connected with the differential (10) through an output bevel gear mechanism, and the output shaft (11) of the differential (10) is arranged perpendicularly to the axis of the engine (1).

6. The automotive hybrid system of claim 5, wherein, The output bevel gear mechanism comprises a fourth gear (94) and a fifth gear (95), the fourth gear (94) is connected with the output gear mechanism, the fourth gear (94) and the fifth gear (95) are engaged, and the fifth gear (95) is connected with the differential (10).

7. The automotive hybrid system of claim 1, wherein The output gear mechanism is connected with the differential (10) through a transmission shaft (12).

8. The automotive hybrid system of claim 7, wherein, The transmission shaft (12) is provided with a first universal wheel (121) and a second universal wheel (122).

9. The automotive hybrid system of claim 1, wherein, The output gear mechanism is connected with the differential (10), and the output shaft (11) of the differential (10) is arranged parallel to the axis of the engine (1).

10. The automotive hybrid system of claim 1, wherein, The planetary gear mechanism (8) is arranged on the side of the motor (7) away from the engine (1).

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