Vehicle power system and vehicle

Abstract

The utility model discloses a vehicle power system and a vehicle. The utility model provides a vehicle power system. The vehicle power system comprises a motor, an engine and a speed increasing gear train. The motor has a motor shaft; the engine is provided with an engine shaft, and the engine shaft and the motor shaft are coaxially arranged; the speed increasing gear train comprises a driving gear and a driven gear set which are connected with each other, the driving gear is connected with an engine shaft, and the driven gear set is connected with a motor shaft. According to the implementation mode, the motor shaft and the engine shaft are coaxially arranged, the size of a vehicle power system is reduced, space is saved, meanwhile, the engine shaft transmits power obtained after speed increasing to the motor shaft through the driving gear and the speed increasing gear train and the driven gear, and therefore the rotating speed of the motor is greatly increased, the efficiency of the motor is improved, and oil consumption is reduced; the cost is saved.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and particularly to a vehicle power system and a vehicle. Background Art

[0002] Our country vigorously promotes the use of new energy, and the new energy industry has developed rapidly. Among them, the emergence of the range extender system has alleviated the range anxiety of new energy vehicles and has been widely recognized in the market.

[0003] Currently, the motor speed in the vehicle power system is relatively low, resulting in low motor efficiency. At the same time, to meet the power generation requirements, the motor volume is relatively large, resulting in high costs. Utility Model Content

[0004] The main purpose of this application is to provide a vehicle power system and a vehicle, aiming to solve the above technical problems existing in the prior art.

[0005] To solve the above problems, this application provides a vehicle power system, which includes: a motor, an engine, and a speed increasing gear train. The motor has a motor shaft; the engine has an engine shaft, and the engine shaft is coaxially arranged with the motor shaft; the speed increasing gear train includes a driving gear and a driven gear set connected to each other. The driving gear is connected to the engine shaft, and the driven gear set is connected to the motor shaft.

[0006] In some embodiments, the driven gear set includes a first driven gear, a second driven gear, and a third driven gear connected in sequence. The first driven gear is connected to the driving gear, and the third driven gear is connected to the motor shaft.

[0007] In some embodiments, the first driven gear and the second driven gear are arranged on one side in the direction perpendicular to the arrangement direction of the motor shaft and the engine shaft.

[0008] In some embodiments, the vehicle power system further includes an input shaft, and the input shaft is respectively connected to the engine shaft and the driving gear.

[0009] In some embodiments, the number of teeth of the first driven gear is less than the number of teeth of the driving gear.

[0010] In some embodiments, the number of teeth of the second driven gear is greater than the number of teeth of the first driven gear.

[0011] In some embodiments, the number of teeth of the third driven gear is less than the number of teeth of the second driven gear.

[0012] In some embodiments, the vehicle power system further includes a dual-mass flywheel, and the dual-mass flywheel is respectively connected to the input shaft and the engine shaft.

[0013] In some embodiments, the engine is used to drive the motor to generate alternating current, and the vehicle power system further includes a motor controller, which is connected to the motor to convert the alternating current generated by the motor into direct current.

[0014] To solve the above problems, the present application provides a vehicle including the above vehicle power system.

[0015] Compared with the prior art, the vehicle power system of the present application includes: a motor, an engine, and a speed increasing gear train. The motor has a motor shaft; the engine has an engine shaft, and the engine shaft is coaxially arranged with the motor shaft; the speed increasing gear train includes a driving gear and a driven gear set connected to each other, the driving gear is connected to the engine shaft, and the driven gear set is connected to the motor shaft. Through the above implementation, the motor shaft and the engine shaft are coaxially arranged, reducing the volume of the vehicle power system, saving space. At the same time, the engine shaft transmits the increased speed power to the motor shaft through the driving gear and the speed increasing gear train, and then through the driven gear, thus greatly increasing the speed of the motor, improving the efficiency of the motor, reducing fuel consumption, and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments of the present application;

[0018] Figure 2 is a schematic structural diagram of a vehicle power system according to one or more embodiments of the present application.

[0019] Reference numerals in the drawings: vehicle 1; vehicle power system 2; motor 10; motor shaft 11; engine 20; engine shaft 21; speed increasing gear train 30; driving gear 31; driven gear set 32; first driven gear 321; second driven gear 322; third driven gear 323; input shaft 40; dual mass flywheel 50; motor controller 60. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will describe in detail the embodiments of the technical solutions of the present application with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0022] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0023] Referring to "embodiments" herein means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0024] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0025] In the description of the embodiments of this application, the term "a plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0026] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of this application.

[0027] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can also be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0028] China has vigorously promoted the use of new energy, and the new energy industry has developed rapidly. Among them, the emergence of the range extender system has alleviated the range anxiety of new energy vehicles and has been widely recognized by the market.

[0029] At present, the motor speed in the vehicle power system is relatively low, resulting in relatively low motor efficiency. At the same time, to meet the power generation requirements, the motor volume is relatively large, resulting in relatively high costs.

[0030] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a vehicle according to one or more embodiments of the present application.

[0031] The vehicle 1 can be a new energy vehicle, etc. The new energy vehicle can be a hybrid vehicle or a range extender vehicle, etc. The vehicle 1 can be a front-wheel drive vehicle, a four-wheel drive vehicle, etc. The vehicle 1 includes a vehicle power system 2, and the vehicle power system 2 can provide power for the vehicle 1 to drive the vehicle 1 to run.

[0032] Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of a vehicle power system according to one or more embodiments of the present application.

[0033] To solve the above problems, the present application provides a vehicle power system 2 including: a motor 10, an engine 20, and a speed increasing gear train 30. The motor 10 has a motor shaft 11; the engine 20 has an engine shaft 21, and the engine shaft 21 is coaxially arranged with the motor shaft 11; the speed increasing gear train 30 includes a driving gear 31 and a driven gear set 32 connected to each other, the driving gear 31 is connected to the engine shaft 21, and the driven gear set 32 is connected to the motor shaft 11.

[0034] The motor 10 can generate electricity driven by the engine 20. In some application scenarios, the electricity generated by the motor 10 can be used to charge the battery. The battery can be a rechargeable battery, which has the advantage of being able to be recycled multiple times after charging. The output current load capacity of the rechargeable battery is higher than that of most disposable batteries. Currently, common types of rechargeable batteries include lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries, etc. Lithium-ion batteries have the advantages of light weight, large capacity (the capacity is 1.5 to 2 times that of nickel-metal hydride batteries of the same weight), no memory effect, etc., and have a very low self-discharge rate. Therefore, even though the price is relatively high, they are still widely used. Lithium-ion batteries are also widely used in pure electric vehicles and hybrid vehicles. The capacity of lithium-ion batteries used for this purpose is relatively slightly lower, but they have a large output and charging current, and also have a long service life. The engine 20 can be, including but not limited to, a fuel engine, etc. The engine 20 can provide power for the motor 10, so that the motor 10 can convert the power provided by the engine 20 into electricity to meet the power demand of the vehicle power system 2. Among them, the engine shaft 21 and the motor 10 are coaxially arranged, which can reduce the overall volume required by the engine 20 and the motor 10, thereby reducing the required space of the vehicle power system 2 and the weight of the vehicle power system 2.

[0035] The angular velocity of the end driven gear in the driven gear set 32 of the speed increasing gear train 30 is greater than the angular velocity of the start end driving gear 31. The speed increasing gear train 30 realizes the increase in speed through the meshing transmission of gears with different numbers of teeth. Specifically, when the large gear drives the small gear to rotate, the rotational speed of the small gear will be faster than that of the large gear, but the torque will decrease accordingly. It can be understood that the driving gear 31 is connected to the engine shaft 21, and the driving gear 31 can rotate driven by the engine shaft 21. Since the number of teeth of the driven gear set 32 is less than that of the driving gear 31, within the same time, the rotational speed of the driven gear at the end of the driven gear set 32 will be higher than that of the driving gear 31, thus achieving the speed increasing effect.

[0036] Through the above implementation manner, the motor shaft 11 and the engine shaft 21 are coaxially arranged, reducing the volume of the vehicle power system 2, saving space. At the same time, the engine shaft 21 is connected to the speed increasing gear train 30 through the driving gear 31, and the increased speed power is transmitted to the motor shaft 11 through the driven gear, thereby greatly increasing the rotational speed of the motor 10, improving the efficiency of the motor 10, reducing fuel consumption, and saving costs.

[0037] In some embodiments, the driven gear set 32 includes a first driven gear 321, a second driven gear 322, and a third driven gear 323 that are sequentially connected. The first driven gear 321 is connected to the driving gear 31, and the third driven gear 323 is connected to the motor shaft 11. It can be understood that the driving gear 31, the first driven gear 321, the second driven gear 322, and the third driven gear 323 are meshed and connected to transmit power. The power generated by the engine 20 is transmitted to the motor shaft 11 through the driving gear 31, sequentially via the first driven gear 321, the second driven gear 322, and the third driven gear 323, thereby facilitating the engine 20 to drive the motor 10 to generate electricity. Among them, the rotational speed of the third driven gear 323 is higher than that of the driving gear 31, thereby increasing the rotational speed of the motor 10, further enhancing the efficiency of the motor 10, and reducing fuel consumption.

[0038] In some embodiments, the first driven gear 321 and the second driven gear 322 are disposed on one side in the direction perpendicular to the arrangement direction of the motor shaft 11 and the engine shaft 21. Exemplarily, the motor shaft 11 and the engine shaft 21 are coaxially arranged, the motor shaft 11 and the engine shaft 21 are co-linear, and the first driven gear 321 and the second driven gear 322 can be located on the periphery of the above-mentioned line. It can be understood that, compared with the first driven gear 321 and the second driven gear 322 being disposed between the motor shaft 11 and the engine shaft 21, the first driven gear 321 and the second driven gear 322 being disposed on one side in the direction perpendicular to the arrangement direction of the motor shaft 11 and the engine shaft 21 further reduces the volume of the vehicle power system 2, thereby saving space.

[0039] In some embodiments, the vehicle power system 2 further includes an input shaft 40, and the input shaft 40 is respectively connected to the engine shaft 21 and the driving gear 31. Thus, the engine shaft 21 is connected to the driving gear 31 through the input shaft 40, which further facilitates the power transmission between the engine shaft 21 and the motor shaft 11, and improves the stability and reliability of the power transmission between the engine shaft 21 and the motor shaft 11.

[0040] In some embodiments, the number of teeth of the first driven gear 321 is less than that of the driving gear 31. It can be understood that the first driven gear 321 is meshed and connected to the driving gear 31, and the number of teeth of the first driven gear 321 is less than that of the driving gear 31. When the engine shaft 21 drives the driving gear 31 to rotate, the first driven gear 321 can rotate at a higher speed compared to the driving gear 31, thereby driving the second driven gear 322 and the third driven gear 323 to rotate at a higher speed compared to being directly connected to the driving gear 31, and further facilitating the increase of the rotational speed of the motor 10 and the improvement of the efficiency of the motor 10.

[0041] In some embodiments, the number of teeth of the second driven gear 322 is greater than that of the first driven gear 321. It can be understood that the second driven gear 322 is meshed with the first driven gear 321. Since the number of teeth of the second driven gear 322 is greater than that of the first driven gear 321, the second driven gear 322 can be driven by the first driven gear 321 to rotate, thereby increasing the torque, improving the power transmission efficiency between the first driven gear 321 and the second driven gear 322, reducing the risk of overload of the driven gear set 32, and thus improving the transitional smoothness when the second driven gear 322 transmits power from the first driven gear 321 to the third driven gear 323.

[0042] In some embodiments, the number of teeth of the third driven gear 323 is less than that of the second driven gear 322. It can be understood that the third driven gear 323 is meshed with the second driven gear 322. Since the number of teeth of the third driven gear 323 is less than that of the second driven gear 322, when the third driven gear 323 is driven by the second driven gear 322 to rotate, the third driven gear 323 can rotate at a higher speed compared to the second driven gear 322, thereby driving the motor shaft 11 to rotate at a higher speed, and further facilitating the increase of the rotational speed of the motor 10 and improving the efficiency of the motor 10.

[0043] In some embodiments, the vehicle power system 2 further includes a dual-mass flywheel 50. The dual-mass flywheel 50 is respectively connected to the input shaft 40 and the engine shaft 21. The dual-mass flywheel 50 is divided into a primary mass and a secondary mass, and is connected into a whole through an elastic element (such as an arc spring damper). The engine 20 is connected to the input shaft 40 through the dual-mass flywheel 50. Thus, the dual-mass flywheel 50 can reduce the imbalance of the engine 20, especially during low-speed operation, thereby reducing the idle speed, enabling the engine 20 to operate within a more economical rotational speed range, effectively reducing noise, and further improving the stability of the vehicle power system 2.

[0044] In some embodiments, the engine 20 is used to drive the motor 10 to generate alternating current. The vehicle power system 2 further includes a motor controller 60. The motor controller 60 is connected to the motor 10 to convert the alternating current generated by the motor 10 into direct current. It can be understood that the power directly generated by the engine 20 driving the motor 10 is alternating current, and the alternating current can be converted into direct current through the motor controller 60, which is convenient for utilizing the power generated by the motor shaft 11.

[0045] In summary, the present application provides a vehicle power system 2, comprising: a motor 10, an engine 20, and a speed increasing gear train 30. The motor 10 has a motor shaft 11; the engine 20 has an engine shaft 21, and the engine shaft 21 is coaxially arranged with the motor shaft 11; the speed increasing gear train 30 includes a driving gear 31 and a driven gear set 32 connected to each other, the driving gear 31 is connected to the engine shaft 21, and the driven gear set 32 is connected to the motor shaft 11. Through the above implementation manner, the motor shaft 11 and the engine shaft 21 are coaxially arranged, reducing the volume of the vehicle power system 2, saving space. At the same time, the engine shaft 21 transmits the increased-speed power to the motor shaft 11 through the driving gear 31 and the speed increasing gear train 30 and through the driven gear, thereby greatly increasing the rotational speed of the motor 10, improving the efficiency of the motor 10, reducing fuel consumption, and saving costs. Compared with other vehicle power systems, the vehicle power system 2 provided by the present application has a faster rotational speed of the motor 10, a smaller volume, and a lower cost.

[0046] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A vehicle power system, characterized in that: The vehicle power system comprises: a motor having a motor shaft; An engine having an engine shaft, wherein the engine shaft is coaxially arranged with the motor shaft; The speed increasing gear train comprises a driving gear and a driven gear set connected to each other, wherein the driving gear is connected to the engine shaft, and the driven gear set is connected to the motor shaft.

2. The vehicle power system according to claim 1, characterized in that: The driven gear set includes a first driven gear, a second driven gear and a third driven gear which are connected in sequence, the first driven gear is connected to the driving gear, and the third driven gear is connected to the motor shaft.

3. The vehicle power system according to claim 2, characterized in that: The first driven gear and the second driven gear are disposed on one side in a direction perpendicular to an arrangement direction of the motor shaft and the engine shaft.

4. The vehicle power system according to claim 2 or 3, characterized in that: The vehicle power system further includes an input shaft, which is connected to the engine shaft and the driving gear respectively.

5. The vehicle power system according to claim 4, characterized in that: The number of teeth of the first driven gear is smaller than the number of teeth of the driving gear.

6. The vehicle power system according to claim 5, characterized in that: The number of teeth of the second driven gear is greater than the number of teeth of the first driven gear.

7. The vehicle power system according to claim 6, characterized in that: The number of teeth of the third driven gear is smaller than the number of teeth of the second driven gear.

8. The vehicle power system according to claim 4, characterized in that: The vehicle power system further comprises a dual mass flywheel connected to the input shaft and the engine shaft respectively.

9. The vehicle power system according to claim 1, characterized in that: The engine is used to drive the motor to generate alternating current. The vehicle power system also includes a motor controller connected to the motor to convert the alternating current generated by the motor into direct current.

10. A vehicle, characterized in that: The vehicle comprises a vehicle power system as claimed in any one of claims 1-9.

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