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 which comprises a first power system, and the first power system comprises a first driving shaft, a first motor and a planet row assembly; the first motor is provided with a first motor shaft, and the first motor is used for outputting power to drive the first driving shaft; the planet row assembly comprises a sun gear, a planet gear, a gear ring and a planet carrier assembly which are connected with one another, the sun gear and the first motor shaft are directly connected and coaxially arranged, and the planet carrier assembly is connected with the first driving shaft. By means of the implementation mode, the first motor shaft and the sun gear of the planet row assembly are directly connected and coaxially arranged, power generated by the first motor shaft can be directly transmitted to the first driving shaft through the planet row assembly, and therefore the size and the weight of the vehicle power system are reduced, and cost is saved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle power system and a vehicle. Background Art

[0002] In order to cope with the rising fuel prices and the volatile international oil situation, my country has vigorously promoted the use of new energy, and the new energy industry has developed rapidly. Among them, the emergence of the range-extending system has alleviated the range anxiety of new energy vehicles and has been widely recognized by the market.

[0003] Currently, the vehicle power system is large in size and weight, resulting in the risk of insufficient vehicle space and reduced range. 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-mentioned technical problems existing in the prior art.

[0005] To solve the above problems, the present application provides a vehicle power system, which includes a first power system, and the first power system includes: a first drive shaft, a first motor and a planetary gear assembly; the first motor has a first motor shaft, and the first motor is used to output power to drive the first drive shaft; the planetary gear assembly includes a sun gear, a planetary gear, a ring gear and a planetary carrier assembly that are interconnected, the sun gear is directly connected to the first motor shaft and is coaxially arranged, and the planetary carrier assembly is connected to the first drive shaft.

[0006] In some embodiments, the planetary gears are meshed with the sun gear and the ring gear respectively, and the planet carrier assembly is connected to the planetary gears to support the planetary gears.

[0007] In some embodiments, the first power system further includes a differential assembly, including a differential ring gear and a differential, the differential being connected to the differential ring gear and the first drive shaft respectively, and the differential ring gear being directly connected to the planet carrier assembly.

[0008] In some embodiments, the first power system further includes a second motor and an engine, the second motor is electrically connected to the first motor, the second motor has a second motor shaft, the engine has an engine shaft, and the engine shaft is connected to the second motor shaft so that the engine drives the second motor to generate electricity.

[0009] In some embodiments, the vehicle power system further includes a driving gear and a driven gear, the driving gear is connected to the engine shaft, the driven gear is connected to the second motor shaft, and the driving gear is connected to the driven gear.

[0010] In some embodiments, the first power system further includes an input shaft and a dual mass flywheel, the dual mass flywheel is connected to the input shaft and the engine shaft respectively, and the engine shaft is connected to the driving gear through the input shaft.

[0011] In some embodiments, the second motor generates alternating current, and the first power system further includes a motor controller, which is connected to the first motor and the second motor respectively, and is used to convert the alternating current generated by the second motor into direct current.

[0012] In some embodiments, the vehicle power system further includes a battery connected to the motor controller.

[0013] In some embodiments, the vehicle power system further includes a second power system, the second power system including a drive assembly and a second drive shaft connected to each other, the drive assembly being connected to a battery.

[0014] In order to solve the above problems, the present application provides a vehicle, including the above-mentioned vehicle power system.

[0015] Compared with the prior art, the vehicle power system of the present application includes a first power system, and the first power system includes: a first drive shaft, a first motor and a planetary gear assembly; the first motor has a first motor shaft, and the first motor is used to output power to drive the first drive shaft; the planetary gear assembly includes a sun gear, a planetary gear, a ring gear and a planetary carrier assembly that are interconnected, the sun gear is directly connected to the first motor shaft and is coaxially arranged, and the planetary carrier assembly is connected to the first drive shaft. Through the above embodiment, the first motor shaft is directly connected to the sun gear of the planetary gear assembly and is coaxially arranged, and the power generated by the first motor shaft can be directly transmitted to the first drive shaft through the planetary gear assembly, thereby, there is no need to set an additional transmission structure between the first motor shaft and the first drive shaft, such as a parallel shaft transmission structure, which reduces the volume and weight of the vehicle power system and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

[0019] Figure numbers: vehicle 1; vehicle power system 2; first power system 100; first drive shaft 110; first motor 120; first motor shaft 121; planetary gear assembly 130; sun gear 131; planetary gear 132; ring gear 133; planetary carrier assembly 134; differential assembly 140; differential ring gear 141; differential 142; second motor 150; second motor shaft 151; engine 160; engine shaft 161; driving gear 162; driven gear 163; input shaft 164; dual mass flywheel 165; motor controller 170; battery 200; second power system 300; second drive shaft 310; drive assembly 320. DETAILED DESCRIPTION

[0020] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

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

[0022] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

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

[0026] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0027] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. 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 the specific circumstances.

[0028] In order to cope with the rising fuel prices and the volatile international oil situation, my country has vigorously promoted the use of new energy, and the new energy industry has developed rapidly. Among them, the emergence of the range-extending system has alleviated the range anxiety of new energy vehicles and has been widely recognized by the market.

[0029] Currently, the vehicle power system is large in size and weight, resulting in the risk of insufficient vehicle space and reduced range.

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

[0031] The vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a hybrid vehicle or an extended range vehicle, etc. The vehicle 1 may be a front-wheel drive vehicle, a four-wheel drive vehicle, etc. The vehicle 1 includes a vehicle power system 2, which may provide power for the vehicle 1 to drive the vehicle 1 to operate.

[0032] Please refer to Figure 2 , Figure 2 It is a schematic diagram of the structure 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, which includes a first power system 100, and the first power system 100 includes: a first drive shaft 110, a first motor 120 and a planetary gear assembly 130; the first motor 120 has a first motor shaft 121, and the first motor 120 is used to output power to drive the first drive shaft 110; the planetary gear assembly 130 includes a sun gear 131, a planetary gear 132, a ring gear 133 and a planetary carrier assembly 134 that are interconnected, the sun gear 131 is directly connected to the first motor shaft 121 and is coaxially arranged, and the planetary carrier assembly 134 is connected to the first drive shaft 110.

[0034] The first motor 120 may be an electric motor, and the first motor 120 may convert electrical energy into mechanical energy, thereby outputting power to the first drive shaft 110 through the planetary gear assembly 130. The first drive shaft 110 may be connected to a power device such as a wheel, etc. For example, the first drive shaft 110 may be connected to a drive wheel of the vehicle 1, thereby transmitting the power output by the first motor 120 to the drive wheel, and driving the drive wheel to rotate, thereby driving the vehicle 1. The first motor shaft 121 is directly connected to the sun gear 131 of the planetary gear assembly 130, and the sun gear 131, the planetary gear 132, the ring gear 133 and the planetary carrier assembly 134 are interconnected. The planetary carrier assembly 134 is connected to the first drive shaft 110, so that the power output by the first motor 120 is directly transmitted to the first drive shaft 110 through the planetary gear assembly 130. In some application scenarios, the planetary carrier assembly 134 may include a welded external gear, and is connected to the first drive shaft 110 through the welded external gear. It is understandable that different transmission ratios and power distribution methods can be achieved by fixing different degrees of freedom among the multiple degrees of freedom of the planetary gear assembly 130. For example, one of the sun gear 131, the planetary carrier assembly 134 and the ring gear 133 can be fixed.

[0035] Through the above-mentioned embodiment, the first motor shaft 121 is directly connected to the sun gear 131 of the planetary gear assembly 130 and is coaxially arranged. The power generated by the first motor shaft 121 can be directly transmitted to the first drive shaft 110 through the planetary gear assembly 130. Therefore, there is no need to set an additional transmission structure, such as a parallel shaft transmission structure, between the first motor shaft 121 and the first drive shaft 110, thereby reducing the volume and weight of the vehicle power system 2 and saving costs.

[0036] In some embodiments, the planetary gears 132 are meshed with the sun gear 131 and the ring gear 133 respectively, and the planetary carrier assembly 134 is connected to the planetary gear 132 to support the planetary gear 132. Thus, the sun gear 131, the planetary gear 132, the ring gear 133 and the planetary carrier assembly 134 can mutually transmit power in different application scenarios, so that the motor can output power to the first drive shaft 110 more flexibly.

[0037] In some embodiments, the first power system 100 further includes a differential assembly 140, including a differential ring gear 141 and a differential 142, wherein the differential 142 is connected to the differential ring gear 141 and the first drive shaft 110 respectively, and the differential ring gear 141 is directly connected to the planet carrier assembly 134. The power output by the first motor 120 can be transmitted to the differential ring gear 141 through the planetary row assembly 130, and then transmitted to the first drive shaft 110 through the differential 142. At the same time, the differential assembly 140 can flexibly distribute the torque on both sides of the first drive shaft 110. As a result, the stability and reliability of the power transmission from the first motor 120 to the first drive shaft 110 are further improved.

[0038] In some embodiments, the first power system 100 further includes a second motor 150 and an engine 160. The second motor 150 is electrically connected to the first motor 120. The second motor 150 has a second motor shaft 151. The engine 160 has an engine shaft 161. The engine shaft 161 is connected to the second motor shaft 151, so that the engine 160 drives the second motor 150 to generate electricity. The second motor 150 can be a generator, and the engine 160 can be, but not limited to, a fuel engine, etc. The engine 160 can provide power to the second motor 150, so that the second motor 150 converts the power provided by the engine 160 into electricity. The second motor 150 is electrically connected to the first motor 120, and the second motor 150 can provide power to the first motor 120, so that the first motor 120 can convert electrical energy into mechanical energy, thereby providing power to the first drive shaft 110.

[0039] In some embodiments, the vehicle power system 2 further includes a driving gear 162 and a driven gear 163, wherein the driving gear 162 is connected to the engine shaft 161, and the driven gear 163 is connected to the second motor shaft 151, and the driving gear 162 is connected to the driven gear 163. It is understood that the power generated by the engine 160 can be sequentially transmitted to the driving gear 162 through the engine shaft 161, and then transmitted to the driven gear 163 through the meshing connection between the driving gear 162 and the driven gear 163, and then transmitted to the second motor shaft 151, and drives the second motor 150 to generate electricity. Thus, the stability of the power transmission between the engine 160 and the second motor 150 is improved through the driving gear 162 and the driven gear 163.

[0040] In some embodiments, the first power system 100 further includes an input shaft 164 and a dual mass flywheel 165, wherein the dual mass flywheel 165 is connected to the input shaft 164 and the engine shaft 161, respectively, and the engine shaft 161 is connected to the driving gear 162 through the input shaft 164. The engine shaft 161 is connected to the input shaft 164 through the dual mass flywheel 165, and the dual mass flywheel 165 can reduce the imbalance of the engine 160, especially when running at a low speed, thereby reducing the idle speed, allowing the engine 160 to run within a more economical speed range, and effectively reducing noise, thereby improving the stability of the first power system 100. The engine shaft 161 is connected to the driving gear 162 through the input shaft 164, thereby further facilitating the power transmission between the engine shaft 161 and the second motor shaft 151, and improving the stability of the power transmission between the engine shaft 161 and the second motor shaft 151.

[0041] In some embodiments, the second motor 150 generates AC power, and the first power system 100 further includes a motor controller 170, which is connected to the first motor 120 and the second motor 150, respectively, and is used to convert the AC power generated by the second motor 150 into DC power. It is understandable that the power directly generated by the second motor 150 driven by the engine 160 is AC power, and the AC power can be converted into DC power through the motor controller 170, so that the first motor 120 and other components can use the power generated by the second motor 150.

[0042] In some embodiments, the vehicle power system 2 further includes a battery 200, which is connected to the motor controller 170. The battery 200 may be a rechargeable battery, which has the advantage of being able to be used repeatedly after being charged, and the output current load of the rechargeable battery is higher than that of most disposable batteries. Common types of rechargeable batteries currently include: lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. Lithium-ion batteries have the advantages of being light in weight, large in capacity (the capacity is 1.5 to 2 times that of nickel-metal hydride batteries of the same weight), having no memory effect, and having a very low self-discharge rate, so even though the price is relatively high, they are still widely used. Lithium-ion batteries are currently also widely used in pure electric vehicles and hybrid vehicles. The capacity of lithium-ion batteries used for such purposes is relatively low, but they have a larger output, charging current, and a longer service life. It is understandable that the battery 200 can provide power to the first motor 120 through the motor controller 170, and can also receive and store power from the second motor 150 through the motor controller 170. Thus, the battery 200 can provide power to the vehicle power system 2.

[0043] In some application scenarios, when the first power system 100 is in the power generation mode, the power generated by the engine 160 can be transmitted to the input shaft 164 through the dual mass flywheel 165, and then transmitted to the driving gear 162, and transmitted to the driven gear 163 through the driving gear 162, and then transmitted to the second motor shaft 151, so that the second motor 150 converts mechanical energy into electrical energy, and then provides power to the first motor 120 and the battery 200 through the motor controller 170.

[0044] When the first power system 100 is in the driving mode, the motor controller 170 can transmit the electric energy provided by the battery 200 or the second motor 150 to the first motor 120, so that the first motor 120 converts the electric energy into mechanical energy to generate power. The power generated by the first motor 120 can be transmitted to the planetary carrier assembly 134 through the sun gear 131, the planetary gears 132 and the ring gear 133 in sequence, and then transmitted to the differential ring gear 141, and then transmitted to the first drive shaft 110 through the differential 142.

[0045] In some embodiments, the vehicle power system 2 further includes a second power system 300, which includes a drive assembly 320 and a second drive shaft 310 connected to each other, and the drive assembly 320 is connected to the battery 200. The second drive shaft 310 can be connected to the drive wheels of the vehicle 1, and the battery 200 can provide power to the drive assembly 320. The drive assembly 320 can convert the electrical energy provided by the battery 200 into mechanical energy, so that the drive assembly 320 drives the second drive shaft 310 to rotate, and then cooperates with the first drive shaft 110 to enhance the power performance of the vehicle power system 2.

[0046] In summary, the present application provides a vehicle power system 2, which includes a first power system 100, and the first power system 100 includes: a first drive shaft 110, a first motor 120 and a planetary gear assembly 130; the first motor 120 has a first motor shaft 121, and the first motor 120 is used to output power to drive the first drive shaft 110; the planetary gear assembly 130 includes a sun gear 131, a planetary gear 132, a ring gear 133 and a planetary carrier assembly 134 that are connected to each other, the sun gear 131 is directly connected to the first motor shaft 121 and is coaxially arranged, and the planetary carrier assembly 134 is connected to the first drive shaft 110. Through the above embodiment, the first motor shaft 121 is directly connected to the sun gear 131 of the planetary gear assembly 130 and is coaxially arranged, and the power generated by the first motor shaft 121 can be directly transmitted to the first drive shaft 110 through the planetary gear assembly 130, thereby reducing the volume and weight of the vehicle power system 2 and saving costs. Compared with other vehicle power systems, the vehicle power system 2 provided in the present application is smaller in size, simpler in structure, and lower in cost.

[0047] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A vehicle power system, characterized in that: The vehicle power system includes a first power system, the first power system including: a first drive shaft; A first motor having a first motor shaft, wherein the first motor is used to output power to drive the first drive shaft; The planetary gear assembly comprises a sun gear, planetary gears, a ring gear and a planet carrier assembly which are interconnected. The sun gear is directly connected to the first motor shaft and is coaxially arranged. The planet carrier assembly is connected to the first drive shaft.

2. The vehicle power system according to claim 1, characterized in that: The planetary gears are meshed with the sun gear and the ring gear respectively, and the planetary carrier assembly is connected with the planetary gears to support the planetary gears.

3. The vehicle power system according to claim 1 or 2, characterized in that: The first power system further includes a differential assembly, including a differential ring gear and a differential, wherein the differential is respectively connected to the differential ring gear and the first drive shaft, and the differential ring gear is directly connected to the planet carrier assembly.

4. The vehicle power system according to claim 3, characterized in that: The first power system also includes a second motor and an engine, the second motor is electrically connected to the first motor, the second motor has a second motor shaft, and the engine has an engine shaft, the engine shaft is connected to the second motor shaft so that the engine drives the second motor to generate electricity.

5. The vehicle power system according to claim 4, characterized in that: The vehicle power system further comprises a driving gear and a driven gear, wherein the driving gear is connected to the engine shaft, the driven gear is connected to the second motor shaft, and the driving gear is connected to the driven gear.

6. The vehicle power system according to claim 5, characterized in that: The first power system further includes an input shaft and a dual mass flywheel, wherein the dual mass flywheel is connected to the input shaft and the engine shaft respectively, and the engine shaft is connected to the driving gear through the input shaft.

7. The vehicle power system according to claim 4, characterized in that: The second motor generates alternating current, and the first power system further includes a motor controller, which is connected to the first motor and the second motor respectively, and is used to convert the alternating current generated by the second motor into direct current.

8. The vehicle power system according to claim 7, characterized in that: The vehicle power system also includes a battery connected to the motor controller.

9. The vehicle power system according to claim 8, characterized in that: The vehicle power system further includes a second power system including a drive assembly and a second drive shaft connected to each other, wherein the drive assembly is connected to the battery.

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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