Hybrid power driving system and vehicle

Abstract

The utility model discloses a hybrid power driving system and a vehicle, and relates to the technical field of vehicle hybrid power, the hybrid power driving system comprises a first power mechanism, a second power mechanism, a third power mechanism and a differential mechanism; the first power mechanism comprises a first motor, a first input shaft and a first intermediate shaft, the first motor is connected with the first input shaft, and the first input shaft is in transmission connection with the first intermediate shaft; the second power mechanism comprises a second motor, a second input shaft and a second intermediate shaft, the second motor is connected with the second input shaft, the second input shaft is in transmission connection with the second intermediate shaft, and the second intermediate shaft and the first intermediate shaft are mutually independent and coaxially arranged; the third power mechanism comprises an engine and a third input shaft, the engine is connected with the third input shaft, and the third input shaft is in transmission connection with the second intermediate shaft; the differential is in transmission connection with the first intermediate shaft. The hybrid power driving system is simple and compact in structure, short in power transmission path, convenient to control and low in cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle hybrid power technology field, especially hybrid power drive system and vehicle. BACKGROUND

[0002] With the rapid development of automobile industry, the requirement of energy saving and emission reduction is increasingly strict, and the oil-electricity hybrid vehicle gradually becomes the best-selling vehicle in the market, and developing more advanced hybrid vehicle is the direction that each automobile manufacturer competes for, the hybrid vehicle takes the battery and fuel as the energy source, takes the engine and motor to provide the driving force, has the advantages that the traditional fuel vehicle has long endurance and the pure electric vehicle has high operation efficiency and less emission, the oil consumption and emission level of the hybrid vehicle have greatly improved, and it has great significance for environmental protection and energy saving.

[0003] Some existing hybrid power drive vehicles adopt multi-gear shifting drive, the power mode switching is complex and inconvenient to control, the system parts are increased, the volume and weight are large, and the cost is high. UTILITY MODEL CONTENT

[0004] The utility model discloses a hybrid power drive system and vehicle, and aims to solve the technical problem that the cost of the existing hybrid power drive system is high.

[0005] To achieve the above-mentioned purpose, the utility model provides a hybrid power drive system, which comprises:

[0006] A first power mechanism, the first power mechanism comprises a first motor, a first input shaft and a first intermediate shaft, the first motor is connected with the first input shaft, and the first input shaft is in transmission connection with the first intermediate shaft;

[0007] A second power mechanism, the second power mechanism comprises a second motor, a second input shaft and a second intermediate shaft, the second motor is connected with the second input shaft, the second input shaft is in transmission connection with the second intermediate shaft, and the second intermediate shaft is coaxially arranged with the first intermediate shaft;

[0008] A third power mechanism, the third power mechanism comprises an engine and a third input shaft, the engine is connected with the third input shaft, and the third input shaft is in transmission connection with the second intermediate shaft;

[0009] A differential mechanism, the differential mechanism is in transmission connection with the first intermediate shaft, and the differential mechanism is used for torque output.

[0010] In an embodiment, the second input shaft and the third input shaft are coaxially arranged and independent of each other, and the second motor and the engine are respectively located at two ends opposite to each other of the second input shaft and the third input shaft.

[0011] In an embodiment, the second intermediate shaft is sleeved on the first intermediate shaft; or, the first intermediate shaft is sleeved on the second intermediate shaft.

[0012] In an embodiment, a clutch is arranged on the first intermediate shaft, and the clutch is used to connect or disconnect the first intermediate shaft and the second intermediate shaft.

[0013] In an embodiment, the second intermediate shaft is coaxial with and spaced from the first intermediate shaft, and a clutch is arranged between the second intermediate shaft and the first intermediate shaft, and the clutch is used to connect or disconnect the first intermediate shaft and the second intermediate shaft.

[0014] In an embodiment, the first motor and the second motor are arranged on opposite sides of the engine in the same direction.

[0015] In an embodiment, a first driving gear is arranged on the first input shaft, a first driven gear is arranged on the first intermediate shaft, and the first driving gear and the first driven gear are engaged to drivingly connect the first input shaft and the first intermediate shaft.

[0016] A middle gear is further arranged on the first intermediate shaft, the middle gear and the first driven gear are spaced apart, the differential gear has a differential gear, and the middle gear and the differential gear are engaged to drivingly connect the differential gear and the first intermediate shaft.

[0017] In an embodiment, a second driving gear is arranged on the second input shaft, a third driving gear is arranged on the third input shaft, a second driven gear and a third driven gear are spaced apart on the second intermediate shaft, the second driving gear and the second driven gear are engaged to drivingly connect the second input shaft and the second intermediate shaft, and the third driving gear and the third driven gear are engaged to drivingly connect the third input shaft and the second intermediate shaft.

[0018] In an embodiment, the third power mechanism further comprises a torsional damper, and the engine is connected with the third input shaft through the torsional damper.

[0019] The utility model further provides a vehicle which applies the hybrid power drive system.

[0020] The utility model discloses a hybrid power drive system, through adopting first power mechanism, second power mechanism and third power mechanism, can realize the multiple power drive mode of vehicle, thereby satisfy the different torque demand of vehicle under different driving environment, wherein first power mechanism includes first motor and first input shaft, and first input shaft and first intermediate shaft transmission connection, and differential mechanism and first intermediate shaft transmission connection, when first motor operates, first motor can pass through first input shaft and second intermediate shaft and carry out power transmission to differential mechanism to drive vehicle to go forward or retreat through differential mechanism, second power mechanism includes second motor and second input shaft, and third power mechanism includes engine and third input shaft, wherein second input shaft and third input shaft all with second intermediate shaft transmission connection, thereby can realize that engine drives second motor rotation to generate electricity, thereby improve the endurance capability of vehicle in long distance, visible, this hybrid power drive system simple and compact structure, power transmission path is short, and it is convenient to control, and wherein second intermediate shaft and first intermediate shaft are independent and coaxial arrangement, save the arrangement space, reduce the volume of whole hybrid power drive system, and the cost is lower. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying creative labor, can also obtain other drawings according to the structure shown in these drawings.

[0022] Figure 1 The structure schematic diagram of one embodiment of the hybrid power drive system provided by the utility model is shown in the figure.

[0023] Figure 2 The structure schematic diagram of another embodiment of the hybrid power drive system provided by the utility model is shown in the figure.

[0024] Figure 3 The structure schematic diagram of still another embodiment of the hybrid power drive system provided by the utility model is shown in the figure.

[0025] Explanation of the reference signs:

[0026] 100, hybrid drive system; 1, first power mechanism; 10, first motor; 11, first input shaft; 12, first intermediate shaft; 13, first driving gear; 14, first driven gear; 15, intermediate gear; 16, parking gear; 2, second power mechanism; 20, second motor; 21, second input shaft; 22, second intermediate shaft; 23, second driving gear; 24, second driven gear; 3, third power mechanism; 30, engine; 31, third input shaft; 32, third driving gear; 33, third driven gear; 34, torsional damper; 4, differential; 41, differential gear; 5, clutch.

[0027] The realization, functional features and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0029] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0030] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skill in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0031] With the rapid development of the automobile industry, the requirements for energy saving and emission reduction are increasingly stringent, and hybrid electric vehicles gradually become best-selling models in the market. Developing more advanced hybrid vehicles is the direction that all automobile manufacturers are competing for. Hybrid electric vehicles use batteries and fuel as energy sources, and use engines and electric motors to provide driving power. They have the advantages of long endurance of traditional fuel vehicles and high operating efficiency and low emissions of pure electric vehicles. The fuel consumption and emission level of hybrid electric vehicles have been greatly improved, which is of great significance to environmental protection and energy saving.

[0032] Some hybrid drive vehicles currently use multi-gear shifting drive, which is complex and inconvenient to control. The system parts are increased, resulting in larger size and weight, and higher cost.

[0033] The utility model provides a kind of hybrid power drive system 100.

[0034] Please refer to Figure 1 In an embodiment of the utility model, the hybrid power drive system 100 includes a first power mechanism 1, a second power mechanism 2, a third power mechanism 3 and a differential 4. The first power mechanism 1 includes a first motor 10, a first input shaft 11 and a first intermediate shaft 12. The first motor 10 is connected to the first input shaft 11, and the first input shaft 11 is drivingly connected to the first intermediate shaft 12. The second power mechanism 2 includes a second motor 20, a second input shaft 21 and a second intermediate shaft 22. The second motor 20 is connected to the second input shaft 21, and the second input shaft 21 is drivingly connected to the second intermediate shaft 22. The second intermediate shaft 22 and the first intermediate shaft 12 are independent and coaxially arranged. The third power mechanism 3 includes an engine 30 and a third input shaft 31. The engine 30 is connected to the third input shaft 31, and the third input shaft 31 is drivingly connected to the second intermediate shaft 22. The differential 4 is drivingly connected to the first intermediate shaft 12, and the differential 4 is used for torque output.

[0035] The utility model discloses a hybrid power drive system 100, through adopting first power mechanism 1, second power mechanism 2 and third power mechanism 3, can realize the multiple power drive mode of vehicle, to meet the different torque demand of vehicle under different driving environment, wherein first power mechanism 1 includes first motor 10 and first input shaft 11, and first input shaft 11 and first intermediate shaft 12 transmission connection, and differential mechanism 4 is transmission connected with first intermediate shaft 12, when first motor 10 runs, first motor 10 can pass through first input shaft 11 and second intermediate shaft 22 and carry out power transmission to differential mechanism 4, to drive the vehicle to advance or retreat through differential mechanism 4, second power mechanism 2 includes second motor 20 and second input shaft 21, and third power mechanism 3 includes engine 30 and third input shaft 31, wherein second input shaft 21 and third input shaft 31 are all transmission connected with second intermediate shaft 22, to realize that engine 30 drives second motor 20 to rotate to generate electricity, to improve the endurance of vehicle in long distance, it can be seen that the hybrid power drive system 100 simple and compact structure, power transmission path is short, and it is convenient to control, and wherein second intermediate shaft 22 and first intermediate shaft 12 are independent and coaxial arrangement, save the arrangement space, reduce the volume of whole hybrid power drive system 100, and the cost is lower.

[0036] Need to explain, independent each other indicates that second intermediate shaft 22 and first intermediate piece can rotate independently and do not affect each other, namely when first intermediate shaft 12 rotates, does not drive second intermediate shaft 22 to rotate, when second intermediate shaft 22 rotates, does not drive first intermediate shaft 12 to rotate.

[0037] Need to explain, the hybrid power drive system 100 according to the operation and close of first power mechanism 1, second power mechanism 2 and third power mechanism 3 described above, can realize any drive mode as follows;

[0038] Pure electric drive mode: first motor 10 drives at this time, and second motor 20 and engine 30 are closed, at this time, the vehicle is driven forward or backward through first motor 10.

[0039] Series hybrid mode, first motor 10 and engine 30 drive, and second motor 20 runs, at this time, the vehicle is driven forward or backward through first motor 10, and second motor 20 is driven through engine 30 to generate electricity, suitable for vehicle long-distance driving endurance.

[0040] Parking power generation mode, first motor 10 is closed, and engine 30 drives, and second motor 20 runs, at this time, the vehicle is parked, and second motor 20 is driven through engine 30 to generate electricity, in the case that the vehicle is not powered, second motor 20 can be driven through engine 30 to generate electricity, increase the means of vehicle to deal with special situation.

[0041] In the energy recovery mode, the first motor 10 is running while the engine 30 and the second motor 20 are shut off. This mode is suitable for vehicles coasting downhill or other terrains, where the vehicle moves forward without power. The first motor 10 is driven to generate electricity via the differential 4, the first intermediate shaft 12, and the first input shaft 11, thereby achieving energy recovery.

[0042] Understandably, in the above modes, "drive" means to provide power; "run" means not to provide power and only to generate electricity; and "off" means not to work.

[0043] In summary, the various driving modes mentioned above can be applied to different scenarios and can be flexibly switched according to the usage scenario to ensure vehicle reliability, and the structure is simple and the cost is low.

[0044] In one embodiment, the second input shaft 21 and the third input shaft 31 are independent of each other and coaxially arranged, and the second motor 20 and the engine 30 are located at opposite ends of the second input shaft 21 and the third input shaft 31, respectively. It can be understood that arranging the second input shaft 21 and the third input shaft 31 coaxially results in a compact structure that is easy to arrange, and the second input shaft 21 and the third input shaft 31 do not interfere with each other, thus ensuring high reliability.

[0045] like Figure 1 As shown, in one embodiment, the second intermediate shaft 22 is loosely fitted onto the first intermediate shaft 12; the structure is compact and easy to arrange, and the second intermediate shaft 22 and the first intermediate shaft 12 can rotate independently of each other.

[0046] In another embodiment, the first intermediate shaft 12 can be loosely fitted onto the second intermediate shaft 22; it has the same beneficial effects as described above, and will not be elaborated here.

[0047] like Figure 2 As shown, in one embodiment, a clutch 5 is provided on the first intermediate shaft 12, and the clutch 5 is used to connect or disconnect the first intermediate shaft 12 and the second intermediate shaft 22.

[0048] Understandably, when the second intermediate shaft 22 is loosely fitted onto the first intermediate shaft 12, a clutch 5 is provided on the first intermediate shaft 12. Through the clutch 5, the first intermediate shaft 12 and the second intermediate shaft 22 can be connected, so that the first intermediate shaft 12 and the second intermediate shaft 22 can transmit power to each other. Therefore, by providing the clutch 5, the following driving modes can also be achieved.

[0049] Parallel hybrid mode: the engine 30 and the first motor 10 are driven, the second motor 20 is running or closed, and the clutch 5 is closed. At this time, the power output of the engine 30 is transmitted to the first intermediate shaft 12 through the third input shaft 31 and the second intermediate shaft 22, and the torque output of the first motor 10 is transmitted to the first intermediate shaft 12 through the first input shaft 11, and finally transmitted to the differential 4 through the first intermediate shaft 12 to output torque to drive the vehicle. It can be used in more complex driving conditions, such as climbing, overspeed, etc. By combining the engine 30 and the first motor 10 to provide sufficient torque output, the second motor 20 can also be used to generate electricity at this time.

[0050] In addition, in some cases, the engine 30 direct drive mode can also be used, the clutch 5 is closed, the first motor 10 is closed, and the second motor 20 is closed or running. It is suitable for the case where the vehicle is short of power or needs to drive at high speed. The engine 30 is used to directly drive the vehicle to drive at high speed.

[0051] Therefore, by providing the clutch 5, the hybrid power driving system 100 can realize more driving modes, have a wider application scenario, and have better reliability.

[0052] In an embodiment, the first intermediate shaft 12 is hollow, and the clutch 5 is arranged on the second intermediate shaft 22, which has the same beneficial effects as described above, and will not be repeated here.

[0053] As shown in FIG. 1, Figure 3 In another embodiment, the second intermediate shaft 22 is coaxial with and spaced apart from the first intermediate shaft 12. The clutch 5 is arranged between the second intermediate shaft 22 and the first intermediate shaft 12, and is used to connect or disconnect the first intermediate shaft 12 and the second intermediate shaft 22.

[0054] It can be seen that the second intermediate shaft 22 and the first intermediate shaft 12 are spaced apart, and the clutch 5 is arranged between the second intermediate shaft 22 and the first intermediate shaft 12. The clutch 5 has the same effect as the above-mentioned clutch 5, that is, Figure 3 In the embodiment shown in FIG. 1,

[0055] It should be noted that the clutch 5 and the clutch 5 can use the synchronizer, the tooth-shaped clutch, the friction plate clutch or the one-way clutch in the prior art.

[0056] In an embodiment, the first motor 10 and the second motor 20 are arranged on the opposite side of the engine 30 in the same direction, and the structure is arranged reasonably.

[0057] In an embodiment, the first input shaft 11 is provided with a first driving gear 13, the first intermediate shaft 12 is provided with a first driven gear 14, the first driving gear 13 and the first driven gear 14 are engaged to drive connect the first input shaft 11 and the first intermediate shaft 12; the first intermediate shaft 12 is further provided with an intermediate gear 15, the intermediate gear 15 and the first driven gear 14 are spaced apart, the differential 4 has a differential gear 41, the intermediate gear 15 and the differential gear 41 are engaged to drive connect the differential 4 and the first intermediate shaft 12.

[0058] It can be understood that the first driving gear 13 rotates with the first input shaft 11, the first driven gear 14 is engaged with the first driving gear 13, and the first driving gear 13 rotates, the first driven gear 14 rotates with it, realizing the rapid transmission of torque, the first input shaft 11 and the first intermediate shaft 12 are only driven by the two engaged first driving gear 13 and first driven gear 14, and the first intermediate shaft 12 and the differential 4 are only driven by the two engaged intermediate gear 15 and differential gear 41, the structure is simple, and the torque loss is smaller.

[0059] Specifically, the size of the first driving gear 13 is smaller than the size of the first driven gear 14, and the size of the intermediate gear 15 is smaller than the size of the differential gear 41, which can effectively realize speed reduction and improve the driving effect.

[0060] In an embodiment, the second input shaft 21 is provided with a second driving gear 23, the third input shaft 31 is provided with a third driving gear 32, the second intermediate shaft 22 is spaced apart and provided with a second driven gear 24 and a third driven gear 33, the second driving gear 23 and the second driven gear 24 are engaged to drive connect the second input shaft 21 and the second intermediate shaft 22, and the third driving gear 32 and the third driven gear 33 are engaged to drive connect the third input shaft 31 and the second intermediate shaft 22.

[0061] It can be understood that the second driving gear 23 is fixedly installed on the second input shaft 21 to realize synchronous rotation of the two, the third driving gear 32 is fixedly installed on the third input shaft 31 to realize synchronous rotation of the two, which is convenient for rapid torque transmission, reduces torque loss, and has a simple structure and reduces the cost of arrangement.

[0062] In an embodiment, the third power mechanism 3 further comprises a torsional damper 34, and the engine 30 is connected with the third input shaft 31 through the torsional damper 34. It can be understood that the torsional damper 34 can effectively reduce the torsional stiffness of the crankshaft of the engine 30 and the first input shaft 11, thereby playing a certain protection role and having better reliability.

[0063] In an embodiment, the first power mechanism 1 further comprises a parking gear 16 arranged on the first input shaft 11; the parking gear 16 is used for vehicle parking brake light, and the parking gear 16 cooperates with an external structure to lock the first input shaft 11, thereby preventing the vehicle from rolling.

[0064] The utility model also proposes a kind of vehicle, the hybrid power drive system 100 as above is applied to the vehicle, and the specific structure of the hybrid power drive system 100 refers to above embodiment, since the vehicle of the present application adopts all technical solutions of above all embodiments, at least has all beneficial effects brought by the technical scheme of above embodiment, here no longer repeat.

[0065] The above is only exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structural transformation made by using the utility model specification and drawing contents under the technical concept of the utility model or direct / indirect application in other related technical fields are included in the patent protection range of the utility model.

Claims

1. A hybrid drive system characterized by comprising: The application relates to a hybrid power drive system. The first power mechanism comprises a first motor, a first input shaft and a first intermediate shaft, the first motor is connected with the first input shaft, and the first input shaft is in transmission connection with the first intermediate shaft. The second power mechanism comprises a second motor, a second input shaft and a second intermediate shaft, the second motor is connected with the second input shaft, the second input shaft is in transmission connection with the second intermediate shaft, and the second intermediate shaft is coaxially arranged with the first intermediate shaft. The third power mechanism comprises an engine and a third input shaft, the engine is connected with the third input shaft, and the third input shaft is in transmission connection with the second intermediate shaft. A differential is in transmission connection with the first intermediate shaft, and the differential is used for torque output.

2. The hybrid drive system of claim 1, wherein, The second input shaft and the third input shaft are coaxially arranged and independent of each other, and the second motor and the engine are respectively located at two opposite ends of the second input shaft and the third input shaft.

3. The hybrid drive system of claim 1, wherein, The second intermediate shaft is sleeved on the first intermediate shaft, or the first intermediate shaft is sleeved on the second intermediate shaft.

4. The hybrid drive system of claim 3, wherein, A clutch is arranged on the first intermediate shaft, and the clutch is used for connecting or disconnecting the first intermediate shaft and the second intermediate shaft.

5. The hybrid drive system of claim 1, wherein, The second intermediate shaft is coaxially and spacedly arranged with the first intermediate shaft, and a clutch is arranged between the second intermediate shaft and the first intermediate shaft, and the clutch is used for connecting or disconnecting the first intermediate shaft and the second intermediate shaft.

6. The hybrid drive system of claim 1, wherein, The first motor and the second motor are arranged on the opposite sides of the engine.

7. The hybrid power drive system according to any one of claims 1 to 6, wherein A first driving gear is arranged on the first input shaft, a first driven gear is arranged on the first intermediate shaft, the first driving gear and the first driven gear are in meshing connection, so that the first input shaft and the first intermediate shaft are in transmission connection. An intermediate gear is further arranged on the first intermediate shaft, the intermediate gear and the first driven gear are spacedly arranged, the differential has a differential gear, the intermediate gear and the differential gear are in meshing connection, so that the differential and the first intermediate shaft are in transmission connection.

8. The hybrid drive system according to any one of claims 1 to 6, characterized by, A second driving gear is arranged on the second input shaft, a third driving gear is arranged on the third input shaft, a second driven gear and a third driven gear are spacedly arranged on the second intermediate shaft, the second driving gear and the second driven gear are in meshing connection, so that the second input shaft and the second intermediate shaft are in transmission connection, and the third driving gear and the third driven gear are in meshing connection, so that the third input shaft and the second intermediate shaft are in transmission connection.

9. The hybrid drive system according to any one of claims 1 to 6, characterized by, The third power mechanism further comprises a torsional damper, and the engine is connected with the third input shaft through the torsional damper.

10. A vehicle characterized by comprising: The hybrid power drive system is applied.

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