Transmission mechanism, driving system and automobile

Abstract

The utility model provides a transmission mechanism, a driving system and an automobile. The transmission mechanism comprises a planet carrier, a first planet row, a second planet row, a first clutch and a second clutch. The first planet row and the second planet row are connected and arranged on the planet carrier in a spaced mode. The first planet row is combined with the first clutch, and the second planet row is combined with the second clutch; the second planet row is connected with the power input end, and the planet carrier is connected with the power output end. The transmission mechanism transmits power to the planet carrier through the second planet row and the first planet row, and finally the power is output by the planet carrier. By means of the combination of the first planet row and the second planet row, two transmission reduction ratios can be achieved, the probability that the driving motor works in an efficient area is increased, and the economical efficiency of the transmission mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drive systems, in particular to a transmission mechanism, a drive system and a car. Background Art

[0002] The existing transmission mechanism includes two basic schemes: parallel axis structure and NW planetary structure. The parallel axis structure has two forms: input and output different axis and coaxial. The technology is relatively mature, but it has disadvantages such as heavy weight, loose envelope, and low power density. The NW planetary structure has the advantages of compact structure, light weight, and high power density. However, the existing transmission mechanisms are all single-speed reduction mechanisms, which fail to maximize the efficiency of the drive motor and cannot meet the use requirements. Utility Model Content

[0003] The utility model provides a transmission mechanism, a driving system and a car to solve the problem that the existing transmission mechanism cannot make the driving motor run with maximum efficiency.

[0004] A transmission mechanism comprises a planet carrier, a first planetary gear, a second planetary gear, a first clutch and a second clutch;

[0005] The first planetary row is connected to the second planetary row and is arranged on the planetary carrier at intervals;

[0006] The first planetary gear is connected to or disconnected from the first clutch, and the second planetary gear is connected to or disconnected from the second clutch; the second planetary gear is connected to the power input end, and the planet carrier is connected to the power output end.

[0007] Preferably, the first planetary gear row comprises a first planetary gear and a first ring gear; the second planetary gear row comprises a second planetary gear and a second ring gear;

[0008] The first planetary gear and the second planetary gear are connected and arranged on the planetary carrier at intervals;

[0009] The inner side of the first gear ring is meshed with the outer side of the first planetary gear, and the outer side of the first gear ring is combined with the first clutch;

[0010] The inner side of the second ring gear meshes with the outer side of the second planetary gear, and the outer side of the second ring gear is engaged with the second clutch.

[0011] Preferably, the first planetary gear and the second planetary gear are installed on the planet carrier at an interval, and the first planetary gear and the second planetary gear are connected to form an integrated structure.

[0012] Preferably, the radius of the first planetary wheel is smaller than the radius of the second planetary wheel, and the number of teeth of the first planetary wheel is smaller than the number of teeth of the second planetary wheel;

[0013] The radius of the first gear ring is smaller than the radius of the second gear ring, and the number of teeth of the first gear ring is smaller than the number of teeth of the second gear ring.

[0014] Preferably, the transmission mechanism further includes a sun gear, the outer side of the sun gear is connected to the second planetary gear, and the inner side of the sun gear is used to connect to the drive motor.

[0015] A driving system, comprising the transmission mechanism and a driving motor;

[0016] The planet carrier of the transmission mechanism is used to connect with the workpiece to be driven;

[0017] The output shaft of the driving motor is connected to the second planetary gear of the transmission mechanism.

[0018] Preferably, the output shaft of the drive motor and the output shaft of the planet carrier are on the same axis.

[0019] Preferably, the drive system further comprises a controller, which is connected to the drive motor, the first clutch and the second clutch, and is used to control the engagement or disconnection of the first clutch and the second clutch.

[0020] Preferably, the driving system comprises two transmission mechanisms and two driving motors; each of the driving motors is connected to a workpiece to be driven via one of the transmission mechanisms;

[0021] The two transmission mechanisms are respectively arranged on the outsides of the two drive motors, and the two drive motors are coaxially arranged.

[0022] A car comprises the driving system and wheels, wherein the wheels are workpieces to be driven.

[0023] The transmission mechanism provided by the embodiment of the utility model is used in combination with a drive motor, and the drive motor transmits power to the transmission mechanism. Specifically, the drive motor transmits power to the second planetary gear through the power input end, the second planetary gear transmits power to the first planetary gear, the first planetary gear transmits power to the planetary carrier, and finally outputs it from the power output end connected to the planetary carrier; by combining the first planetary gear and the second planetary gear, two transmission reduction ratios can be achieved, so that the probability of the drive motor working in the high-efficiency zone becomes greater, and the economy of the transmission mechanism is improved. The first planetary gear is combined with the first clutch, and the second planetary gear is combined with the second clutch. The two-speed planetary reduction mechanism is realized by combining or disconnecting the first clutch and the second clutch. Compared with the parallel shaft structure, the transmission mechanism in this example has a more compact structure, a smaller weight, and a higher power density; compared with the NW planetary structure, adding a set of inner gear rings and clutches on the basis of the NW planetary gear can realize two-speed reduction, and the overall envelope size is equivalent to the NW planetary gear; the probability of the drive motor working in the high-efficiency zone is greatly improved, and the drive motor has more operating conditions in the high-efficiency zone, realizing the maximum efficiency of the drive motor operation, and realizing the overall improvement of the economy of the drive system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a structural diagram of the drive system in one embodiment of the utility model

[0026] Figure 2 It is a schematic diagram of the lever of the planetary gear in one embodiment of the utility model.

[0027] Among them, 1. planetary carrier; 2. first planetary row; 21. first planetary gear; 22. first ring gear; 3. second planetary row; 31. second planetary gear; 32. second ring gear; 4. first clutch; 5. second clutch; 6. sun gear; 7. drive motor; 8. wheels. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The utility model embodiment provides a transmission mechanism, referring to Figure 1 The transmission mechanism includes a planetary carrier 1, a first planetary row 2, a second planetary row 3, a first clutch 4 and a second clutch 5; the first planetary row 2 is connected to the second planetary row 3 and is arranged on the planetary carrier 1 at intervals; the first planetary row 2 is engaged or disconnected with the first clutch 4, and the second planetary row 3 is engaged or disconnected with the second clutch 5; the second planetary row 3 is connected to the power input end, and the planetary carrier 1 is connected to the power output end.

[0032] As an example, the transmission mechanism is used in conjunction with the drive motor 7, which transmits power to the transmission mechanism. Specifically, the drive motor 7 transmits power to the second planetary gear 3 through the power input end, the second planetary gear 3 transmits power to the first planetary gear 2, the first planetary gear 2 transmits power to the planetary carrier 1, and finally outputs power from the power output end connected to the planetary carrier 1; by combining the first planetary gear 2 and the second planetary gear 3, two transmission reduction ratios can be achieved, so that the probability of the drive motor 7 working in the high-efficiency zone becomes greater, and the economy of the transmission mechanism is improved. The first planetary row 2 is engaged or disconnected with the first clutch 4, and the second planetary row 3 is engaged or disconnected with the second clutch 5. The engagement or disconnection of the first clutch 4 and the second clutch 5 realizes a two-speed planetary reduction mechanism. Compared with the parallel shaft structure, the transmission mechanism in this example has a more compact structure, a smaller weight, and a higher power density. Compared with the NW planetary structure, a two-speed reduction is realized by adding a set of inner ring gears and clutches to the NW planetary row, and the overall envelope size is equivalent to that of the NW planetary row. This greatly increases the probability of the drive motor 7 operating in the high-efficiency zone, and the drive motor 7 has more operating conditions in the high-efficiency zone, thereby realizing the maximum efficiency of the drive motor 7 and achieving a comprehensive improvement in the economy of the drive system.

[0033] In one embodiment, referring to Figure 1 The first planetary row 2 includes a first planetary gear 21 and a first ring gear 22, and the second planetary row 3 includes a second planetary gear 31 and a second ring gear 32; the first planetary gear 21 and the second planetary gear 31 are connected and spaced apart on the planetary carrier 1; the inner side of the first ring gear 22 is meshed with the outer side of the first planetary gear 21, and the outer side of the first ring gear 22 is combined with the first clutch 4; the inner side of the second ring gear 32 is meshed with the outer side of the second planetary gear 31, and the outer side of the second ring gear 32 is combined with the second clutch 5.

[0034] As an example, during installation, the first planetary gear 21 and the second planetary gear 31 are connected, and then spaced apart on the planetary carrier 1, and the second planetary gear 31 is used to connect with the power input end. When the transmission mechanism is working, the power is transmitted to the first planetary gear 21 through the second planetary gear 31, and then transmitted to the planetary carrier 1, and finally output through the output end of the planetary carrier 1; the first clutch 4 is engaged or disconnected with the first gear ring 22, which can control the first planetary gear 21 to rotate or not rotate; the second clutch 5 is engaged or disconnected with the second gear ring 32, which can control the second planetary gear 31 to rotate or not rotate; by using the combination of the first planetary gear 2 and the first clutch 4 being engaged or disconnected, and the second planetary gear 3 and the second clutch 5 being engaged or disconnected, two transmission reduction ratios can be achieved, so that the probability of the drive motor 7 working in the high-efficiency zone becomes greater, and the economy of the transmission mechanism is improved. Among them, when the first gear ring 22 is combined with the first clutch 4, the transmission mechanism is in the first gear reduction mode, when the second gear ring 32 is combined with the second clutch 5, the transmission mechanism is in the second gear reduction mode, and when the first gear ring 22 is not combined with the first clutch 4 and the second gear ring 32 is not combined with the second clutch 5, the transmission mechanism is in the disengaged idling mode. The opening and closing of the first clutch 4 and the second clutch 5 realizes a two-speed planetary reduction mechanism, which greatly improves the probability of the drive motor 7 working in the high-efficiency zone, and the drive motor 7 has more operating conditions in the high-efficiency zone, so as to achieve the maximum efficiency of the drive motor 7 and realize the overall improvement of the economy of the drive system.

[0035] In one embodiment, referring to Figure 1 The first planetary gear 21 and the second planetary gear 31 are installed on the planetary carrier 1 at an interval, and the first planetary gear 21 and the second planetary gear 31 are connected to form an integrated structure.

[0036] As an example, during installation, the first planetary gear 21 and the second planetary gear 31 are installed on the planetary carrier 1 in sequence and at intervals. The first planetary gear 21 is connected to the second planetary gear 31 as an integrated structure through integration, interference fit, spline, welding, etc., which can enhance the connectivity between the first planetary gear 21 and the second planetary gear 31 and ensure the safety of parts use.

[0037] In one embodiment, referring to Figure 1 The radius of the first planetary gear 21 is smaller than the radius of the second planetary gear 31 , and the number of teeth of the first planetary gear 21 is smaller than the number of teeth of the second planetary gear 31 ; the radius of the first gear ring 22 is smaller than the radius of the second gear ring 32 , and the number of teeth of the first gear ring 22 is smaller than the number of teeth of the second gear ring 32 .

[0038] As an example, compared with the second planetary gear 31, the radius of the first planetary gear 21 is smaller than that of the second planetary gear 31, and the number of teeth of the first planetary gear 21 is smaller than that of the second planetary gear 31; compared with the second ring gear 32, the radius of the first ring gear 22 is smaller than that of the second ring gear 32, and the number of teeth of the first ring gear 22 is smaller than that of the second ring gear 32. When the first ring gear 22 and the second ring gear 32 are respectively combined with the first clutch 4 and the second clutch 5, the speed ratios of each gear in the transmission mechanism can be different, thereby reducing the NVH risk caused by gear order overlap.

[0039] In one embodiment, referring to Figure 1 The transmission mechanism also includes a sun gear 6 , the outer side of the sun gear 6 is connected to the second planetary row 3 , and the inner side of the sun gear 6 is used to connect to the drive motor 7 .

[0040] As an example, the sun gear 6 serves as a transition piece between the second planetary gear 3 and the drive motor 7. The inner side of the sun gear 6 is used to connect to the drive motor 7, and the outer side of the sun gear 6 is connected to the second planetary gear 3, so as to facilitate the transmission of power from the drive motor 7 to the second planetary gear 3.

[0041] The utility model embodiment provides a driving system, referring to Figure 1 , including a transmission mechanism and a driving motor 7; a planetary carrier 1 of the transmission mechanism is used to be connected to a workpiece to be driven; an output shaft of the driving motor 7 is connected to a second planetary row 3 of the transmission mechanism.

[0042] As an example, the drive system includes a transmission mechanism and a drive motor 7, the drive motor 7 transmits power to the transmission mechanism, and the planetary gears of the first planetary row 2 and the planetary gears of the second planetary row 3 in the transmission mechanism are an integrated double-tooth structure. Specifically, the drive motor 7 transmits power to the second planetary row 3 through the power input end, the second planetary row 3 transmits power to the first planetary row 2, the first planetary row 2 transmits power to the planetary carrier 1, and finally outputs power from the power output end connected to the planetary carrier 1; by combining the first planetary row 2 and the second planetary row 3, two transmission reduction ratios can be achieved, so that the probability of the drive motor 7 working in the high-efficiency zone becomes greater, and the economy of the transmission mechanism is improved.

[0043] In this example, the planet carrier 1 is connected to the workpiece to be driven as a whole through splines, flanges, etc.; the output shaft of the drive motor 7 is connected to the second planetary row 3 of the transmission mechanism. Specifically, the sun gear 6 is first connected to the output shaft of the drive motor 7 as a whole through integration, interference fit, splines, etc., and then connected to the second planetary row 3 of the transmission mechanism; the transmission mechanism in this example transmits power to the planet carrier 1 through the sun gear 6, the second planetary row 3 and the first planetary row 2, and finally outputs it from the planet carrier 1; by combining the first planetary row 2 and the second planetary row 3, two transmission reduction ratios can be achieved, which increases the probability of the drive motor 7 working in the high-efficiency zone and improves the economy of the transmission mechanism. The first planetary row 2 is combined with the first clutch 4, and the second planetary row 3 is combined with the second clutch 5. The two-speed planetary reduction mechanism is realized by the combination or disconnection of the first clutch 4 and the second clutch 5. Compared with the parallel shaft structure, the transmission mechanism in this example is more compact, lighter and has a higher power density. Compared with the NW planetary structure, a set of inner ring gear and clutch is added to the NW planetary row to realize two-speed reduction, and the overall envelope size is equivalent to that of the NW planetary row. The probability of the drive motor 7 working in the high-efficiency zone is greatly improved, and the drive motor 7 has more operating conditions in the high-efficiency zone, thereby realizing the maximum efficiency of the drive motor 7 and achieving a comprehensive improvement in the economy of the drive system.

[0044] In one embodiment, referring to Figure 1 The output shaft of the driving motor 7 and the output shaft of the planetary carrier 1 are on the same axis.

[0045] As an example, the output shaft of the drive motor 7 is on the same axis as the output shaft of the planetary carrier 1. This arrangement makes the input and output ends of the power on the same axis, and the drive system space is compact, which is more beneficial for the overall vehicle layout. At the same time, the increased power density brought about by lightweighting enhances the competitiveness of the product.

[0046] In one embodiment, referring to Figure 1 The drive system also includes a controller, which is connected to the drive motor 7, the first clutch 4 and the second clutch 5, and is used to control the engagement or disconnection of the first clutch 4 and the second clutch 5.

[0047] As an example, the drive system realizes two-speed deceleration on the basis of being equivalent to the NW planetary gear space, and is used to control the gear position of the drive system through the cooperation of the first clutch 4 and the second clutch 5 of the transmission mechanism; when the first clutch 4 of the transmission mechanism is in the engaged state and the second clutch 5 is in the disconnected state, the gear position of the drive system is the first gear; when the first clutch 4 of the transmission mechanism is in the disconnected state and the second clutch 5 is in the engaged state, the gear position of the drive system is the second gear.

[0048] The speed ratio of the drive system in this example is calculated as follows Figure 2As shown: By opening and closing different clutches, the k value of the planetary reduction mechanism is changed, thereby achieving two-speed ratios, and the speed ratio of the planetary reduction mechanism is equal to the k value + 1. The k values ​​of the two gears are calculated as follows: the speed ratio of the first gear is (the number of teeth of the second gear ring 32) / the number of teeth of the sun gear 6; the speed ratio of the second gear is (the number of teeth of the first gear ring 22 / the number of teeth of the first planetary gear 21)*(the number of teeth of the second planetary gear 31 / the number of teeth of the sun gear 6).

[0049] In one embodiment, referring to Figure 1 The driving system includes two transmission mechanisms and two driving motors 7; each driving motor 7 is connected to a workpiece to be driven through a transmission mechanism; the two transmission mechanisms are respectively arranged on the outside of the two driving motors 7, and the two driving motors 7 are coaxially arranged.

[0050] As an example, the drive system includes two transmission mechanisms and two drive motors 7; each drive motor 7 is connected to a workpiece to be driven through a transmission mechanism; the two transmission mechanisms are respectively arranged on the outside of the two drive motors 7, and the two drive motors 7 are coaxially arranged; this arrangement makes the left and right structures of the drive system present a symmetrical arrangement, the sun gear 6 is connected to the output shaft of the drive motor 7 as power input, the planetary carrier 1 is connected to the workpiece to be driven as power output, and the two drive motors 7 respectively control the two workpieces to be driven to achieve appropriate control. The drive system in this example is a distributed electric drive system, and the speed ratios of the two workpieces to be driven can be different during operation, reducing the NVH risk caused by the overlap of gear orders; the distributed electric drive system has a compact space, which is more beneficial for the layout of the whole vehicle, and the power density brought by lightweighting improves the competitiveness of the product; at the same time, the lubrication condition of the distributed electric drive system is more favorable, and there is no poor lubrication problem of the parallel axis solution on uphill and downhill conditions.

[0051] The utility model embodiment provides a car, referring to Figure 1 , including a driving system and a wheel 8, wherein the wheel 8 is a workpiece to be driven.

[0052] As an example, the drive system includes a transmission mechanism and a drive motor 7, the drive motor 7 transmits power to the transmission mechanism, and the planetary gears of the first planetary row 2 and the planetary gears of the second planetary row 3 in the transmission mechanism are an integrated double-tooth structure. Specifically, the drive motor 7 transmits power to the second planetary row 3 through the power input end, the second planetary row 3 transmits power to the first planetary row 2, the first planetary row 2 transmits power to the planetary carrier 1, and finally outputs power from the power output end connected to the planetary carrier 1; by combining the first planetary row 2 and the second planetary row 3, two transmission reduction ratios can be achieved, so that the probability of the drive motor 7 working in the high-efficiency zone becomes greater, and the economy of the transmission mechanism is improved.

[0053] In this example, the planet carrier 1 is connected to the workpiece to be driven as a whole through splines, flanges, etc.; the output shaft of the drive motor 7 is connected to the second planetary row 3 of the transmission mechanism. Specifically, the sun gear 6 is first connected to the output shaft of the drive motor 7 as a whole through integration, interference fit, splines, etc., and then connected to the second planetary row 3 of the transmission mechanism; the transmission mechanism in this example transmits power to the planet carrier 1 through the sun gear 6, the second planetary row 3 and the first planetary row 2, and finally outputs it from the planet carrier 1; by combining the first planetary row 2 and the second planetary row 3, two transmission reduction ratios can be achieved, which increases the probability of the drive motor 7 working in the high-efficiency zone and improves the economy of the transmission mechanism. The first planetary row 2 is combined with the first clutch 4, and the second planetary row 3 is combined with the second clutch 5. The two-speed planetary reduction mechanism is realized by the combination or disconnection of the first clutch 4 and the second clutch 5. Compared with the parallel shaft structure, the transmission mechanism in this example is more compact, lighter and has a higher power density. Compared with the NW planetary structure, a set of inner ring gear and clutch is added to the NW planetary row to realize two-speed reduction, and the overall envelope size is equivalent to that of the NW planetary row. The probability of the drive motor 7 working in the high-efficiency zone is greatly improved, and the drive motor 7 has more operating conditions in the high-efficiency zone, thereby realizing the maximum efficiency of the drive motor 7 and achieving a comprehensive improvement in the economy of the drive system.

[0054] The drive system in this embodiment is a distributed electric drive system, which realizes independent vector control of two wheels 8 based on two drive motors 7 and the planetary reduction mechanisms of two transmission mechanisms. At the same time, four clutches are added to realize a two-speed reduction function, which increases the probability that the drive motor 7 operates in a high-efficiency range. In addition, based on the actual working process, the speed ratios of the wheels 8 on both sides can be different, reducing the NVH risk of resonance caused by gear order overlap, thereby greatly improving the vehicle's power, economy and NVH performance.

[0055] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A transmission mechanism, characterized in that: It includes a planet carrier, a first planetary gear, a second planetary gear, a first clutch and a second clutch; The first planetary row is connected to the second planetary row and is arranged on the planetary carrier at intervals; The first planetary gear is connected to or disconnected from the first clutch, and the second planetary gear is connected to or disconnected from the second clutch; the second planetary gear is connected to the power input end, and the planet carrier is connected to the power output end.

2. The transmission mechanism according to claim 1, characterized in that: The first planetary gear row includes a first planetary gear and a first ring gear; the second planetary gear row includes a second planetary gear and a second ring gear; The first planetary gear and the second planetary gear are connected and arranged on the planetary carrier at intervals; The inner side of the first gear ring is meshed with the outer side of the first planetary gear, and the outer side of the first gear ring is combined with the first clutch; The inner side of the second ring gear meshes with the outer side of the second planetary gear, and the outer side of the second ring gear is engaged with the second clutch.

3. The transmission mechanism according to claim 2, characterized in that: The first planetary gear and the second planetary gear are installed on the planetary carrier at intervals, and the first planetary gear and the second planetary gear are connected to form an integrated structure.

4. The transmission mechanism according to claim 2, characterized in that: The radius of the first planetary gear is smaller than the radius of the second planetary gear, and the number of teeth of the first planetary gear is smaller than the number of teeth of the second planetary gear; The radius of the first gear ring is smaller than the radius of the second gear ring, and the number of teeth of the first gear ring is smaller than the number of teeth of the second gear ring.

5. The transmission mechanism according to claim 1, characterized in that: The transmission mechanism further includes a sun gear, the outer side of the sun gear is connected to the second planetary gear, and the inner side of the sun gear is used to connect to the drive motor.

6. A drive system, characterized in that: Comprising the transmission mechanism and the drive motor according to any one of claims 1 to 5; The planet carrier of the transmission mechanism is used to connect with the workpiece to be driven; The output shaft of the driving motor is connected to the second planetary gear of the transmission mechanism.

7. The drive system according to claim 6, characterized in that: The output shaft of the driving motor and the output shaft of the planet carrier are on the same axis.

8. The drive system according to claim 6, characterized in that: The driving system further includes a controller, which is connected to the driving motor, the first clutch and the second clutch, and is used to control the engagement or disconnection of the first clutch and the second clutch.

9. The drive system according to claim 6, characterized in that: The driving system comprises two transmission mechanisms and two driving motors; each of the driving motors is connected to a workpiece to be driven via a transmission mechanism; The two transmission mechanisms are respectively arranged on the outsides of the two drive motors, and the two drive motors are coaxially arranged.

10. An automobile, characterized in that: It comprises the driving system and wheel as described in any one of claims 6 to 9, wherein the wheel is a workpiece to be driven.

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