Power system

Abstract

The present application relates to a power system comprising: a motor (201); the first rotating shaft (203) is fixedly connected with the motor (201), and a through hole (204) is formed in the first rotating shaft (203) in the axial direction; the second rotating shaft (202) penetrates through the through hole (204) of the first rotating shaft (203) in the axial direction; the first clutch (40) is arranged on one side of the axial direction of the motor (201) and connected with the second rotating shaft (202), and the first clutch (40) is further connected with the motor (201); and the second clutch (50) is arranged on the other side of the axial direction of the motor (201) and is connected with the first rotating shaft (203). According to the power system, compared with a traditional scheme that two motors are used, one motor is omitted, and the functions of whole vehicle driving and range extending charging can be achieved through connection and disconnection of the two clutches; the space occupied by the power system is integrally reduced, and the space utilization rate of the vehicle can be increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and in particular relates to a power system. Background Art

[0002] With the rapid development of electric vehicles, the power systems of electric vehicles have also developed. At present, the power systems of electric vehicles include extended-range power systems. Most of the extended-range automobile front-wheel drive range extenders in the prior art include generators and drive motors, which can realize the functions of extended-range power generation and driving. However, the generators and drive motors need to occupy a larger space in the vehicle, which will affect the space utilization of the vehicle. Utility Model Content

[0003] In order to solve the above problems in the prior art, the purpose of the present invention is to provide a power system, and the specific technical solutions adopted are as follows:

[0004] A power system includes a motor, wherein the power system includes only one motor; a first rotating shaft, wherein the first rotating shaft is fixedly connected to the motor, and the first rotating shaft is provided with a through hole in the axial direction; a second rotating shaft, wherein the second rotating shaft passes through the through hole of the first rotating shaft in the axial direction; a first clutch, wherein the first clutch is arranged on one side of the axial direction of the motor and is connected to the second rotating shaft, and the first clutch is also connected to the motor; and a second clutch, wherein the second clutch is arranged on the other side of the axial direction of the motor and is connected to the first rotating shaft. Compared with the traditional range-extending solution using two motors, the power system of the present application reduces one motor, and by controlling the engagement and disconnection of the two clutches, the functions of driving the entire vehicle and charging the extended range can be realized; the space occupied by the power system is reduced as a whole, and the space of the vehicle can be increased, so as to better arrange the various components inside the vehicle.

[0005] Optionally, the diameter of the through hole is larger than the diameter of the second rotating shaft; the first rotating shaft and the second rotating shaft are coaxially arranged, so that the second rotating shaft can pass through the through hole of the first rotating shaft along the same axial direction, and the second rotating shaft and the first rotating shaft do not affect each other when rotating.

[0006] Optionally, the second shaft is provided with first bearings at its two axial ends, and the first bearings are accommodated in the through hole, so as to ensure the stability of the second shaft during rotation and reduce the friction between the second shaft and the first shaft.

[0007] Optionally, the first rotating shaft is provided with second bearings at the parts close to the two axial ends, respectively, to ensure the stability of the first rotating shaft during operation.

[0008] Optionally, the power system further includes an engine assembly, the engine assembly includes a third rotating shaft, the third rotating shaft and the second rotating shaft are arranged along the same axial direction, and the third rotating shaft and the second rotating shaft are connected via a shock absorber. The use of the shock absorber can reduce the vibration between the third rotating shaft and the second rotating shaft, thereby increasing the service life of the third rotating shaft and the second rotating shaft; at the same time, when the motor is working, it drives the first clutch to rotate, thereby driving the second rotating shaft to rotate, and then drives the third rotating shaft to start the engine; after the engine is started, it drives the third rotating shaft, the second rotating shaft and the first clutch, and then drives the motor to achieve the function of extended range power generation.

[0009] Optionally, the power system further includes a reducer, the reducer includes a first gear, the first gear is sleeved on the outer periphery of the first rotating shaft through a third bearing and is connected to the second clutch. When the motor is working, it can drive the first rotating shaft to rotate, and drive the second clutch to rotate through the first rotating shaft; the second clutch then drives the first gear to rotate, so that the reducer works and the whole vehicle is driven.

[0010] Optionally, the reducer further comprises a second gear meshing with the first gear, a third gear coaxially arranged with the second gear, and a fourth gear meshing with the third gear, the outer diameter of the second gear is larger than the outer diameters of the first gear and the third gear, and the outer diameter of the fourth gear is larger than the outer diameter of the third gear. The use of a reducer through two-stage reduction can achieve the effect of reducing speed and increasing torque.

[0011] Optionally, the second gear and the third gear are connected via a fourth shaft, and the fourth shaft is provided with fourth bearings at its two ends. The fourth bearings can ensure the working stability of the fourth shaft, thereby ensuring the stable operation of the reducer.

[0012] Optionally, the fourth gear is connected to a differential. The differential can be used to adjust the speed difference between the wheels on both sides to prevent the wheels from being damaged.

[0013] Optionally, the power system further includes a control switch, which is connected to the first clutch and the second clutch. The first clutch and the second clutch can be closed and engaged by the control switch. When the control switch is operated to engage the first clutch with the motor, the function of extended range power generation can be achieved; when the control switch is operated to engage the second clutch with the reducer, the whole vehicle can be driven. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features and advantages of the present invention are described below, which explains the present invention in more detail based on embodiments in conjunction with the accompanying drawings.

[0015] Figure 1 It is a structural schematic diagram of the power system of this application.

[0016] Among them, the main marks of the drawings in the figure are as follows:

[0017] 10-engine assembly, 101-engine, 102-third shaft, 201-motor, 202-second shaft, 203-first shaft, 204-through hole; 30-reducer, 301-first gear, 302-second gear, 303-third gear, 304-fourth gear, 305-fourth shaft; 40-first clutch; 50-second clutch; 60-control switch; 70-differential; 80-shock absorber; 11-first bearing, 12-second bearing, 13-third bearing, 14-fourth bearing. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be noted that the terms "upper", "lower", "left", "right", "front", "back" and similar expressions used herein are only for the purpose of illustration and are not intended to limit the present invention.

[0019] A power system includes a motor 201, the power system includes only one motor 201; a first rotating shaft 203, the first rotating shaft 203 is fixedly connected to the motor 201, and the first rotating shaft 203 is provided with a through hole 204 along the axial direction; a second rotating shaft 202, the second rotating shaft 202 passes through the through hole 204 of the first rotating shaft 203 along the axial direction; a first clutch 40, the first clutch 40 is arranged on one side of the axial direction of the motor 201 and connected to the second rotating shaft 202, and the first clutch 40 is also connected to the motor 201; and a second clutch 50, the second clutch 50 is arranged on the other side of the axial direction of the motor 201 and connected to the first rotating shaft 203. Compared with the traditional range-extending solution using two motors, the power system of the present application reduces one motor, and realizes the functions of vehicle driving and range-extending charging by controlling the engagement and disconnection of the two clutches; the space occupied by the power system is reduced as a whole, which can improve the space utilization of the vehicle, so as to better arrange the various components inside the vehicle.

[0020] In some embodiments, the diameter of the through hole 204 is greater than the diameter of the second rotating shaft 202 ; the first rotating shaft 203 and the second rotating shaft 202 are coaxially arranged.

[0021] In some embodiments, first bearings 11 are respectively sleeved on portions of the second rotating shaft 202 close to both axial ends, and the first bearings 11 are accommodated in the through hole 204 .

[0022] In some embodiments, second bearings 12 are respectively disposed at portions of the first rotating shaft 203 close to both axial ends.

[0023] like Figure 1As shown, the power system of the present application includes a motor 201, the rotor of the motor 201 is fixedly connected to the first rotating shaft 203, so that the motor 201 can drive the first rotating shaft 203 to rotate when it is running; the first rotating shaft 203 is axially provided with a through hole 204 that penetrates the first rotating shaft 203, so the first rotating shaft 203 is a hollow structure, and the second rotating shaft 202 axially passes through the through hole 204 of the first rotating shaft 203; the second rotating shaft 202 and the first rotating shaft 203 are arranged along the same axis; the diameter of the second rotating shaft 202 is smaller than the diameter of the through hole 204, and the axial part of the second rotating shaft 202 close to the two ends is sleeved with a first bearing 11 to ensure that the second rotating shaft 202 and the first rotating shaft 203 are coaxial. The setting improves the stability of the second rotating shaft 202 during rotation, and at the same time reduces the friction between the second rotating shaft 202 and the first rotating shaft 203 to prevent wear; the present application includes but is not limited to two first bearings 11, and the number of use can be determined according to actual conditions. When multiple first bearings are used, multiple first bearings 11 are arranged at equal intervals to ensure the stability of rotation; the parts of the first rotating shaft 203 close to both ends are sleeved with second bearings 12, specifically, the part of the first rotating shaft 203 close to the left end is sleeved with a second bearing 12, and the part of the first rotating shaft 203 close to the right end is sleeved with a second bearing 12, and the second bearings 12 at the left and right ends can ensure the smooth operation of the first rotating shaft 203.

[0024] In some embodiments, the power system further includes an engine assembly 10 , the engine assembly 10 includes a third rotating shaft 102 , the third rotating shaft 102 and the second rotating shaft 202 are arranged along the same axial direction, and the third rotating shaft 102 and the second rotating shaft 202 are connected via a shock absorber 80 .

[0025] like Figure 1 As shown, the power system includes an engine assembly 10, which includes an engine 101 and a third shaft 102 fixedly connected to the engine 101. The engine 101 starts and drives the third shaft 102 to rotate; the third shaft 102 and the second shaft 202 are arranged along the same axis, and the third shaft 102 and the second shaft 202 are connected through a shock absorber 80. The shock absorber 80 can be connected to the third shaft 102 and the second shaft 202 by bolts, or can be connected in other ways. The connection method is not specifically limited in this application; by using the shock absorber 80, the vibration between the third shaft 102 and the second shaft 202 can be reduced, thereby improving the service life of the third shaft 102 and the second shaft 202; the engine 101 starts and drives the third shaft 102 to rotate, and the third shaft 102 drives the second shaft 202 to rotate.

[0026] like Figure 1As shown, the power system also includes a first clutch 40, which is arranged on the right side of the motor 201 and connected to the second shaft 202. The first clutch 40 is also connected to the motor 201. Specifically, the active end of the first clutch 40 is connected to the second shaft 202, so when the second shaft 202 rotates, it can drive the active end of the first clutch 40 to rotate, or when the first clutch 40 is running, it can drive the second shaft 202 to rotate; the driven end of the first clutch 40 is used to connect to the rotor of the motor 201. When the control switch 60 is in position C, the driven end of the first clutch 40 is engaged with the rotor of the motor 201; the motor 201 drives the first clutch 40 to rotate when it works. The motor 40 rotates, the first clutch 40 rotates to drive the second shaft 202 to rotate, the second shaft 202 rotates to drive the third shaft 102 to rotate, and the third shaft 102 drives the engine 101 to start; after the engine 101 is started, the third shaft 102, the second shaft 202 and the first clutch 40 drive the motor 201 to move, at this time the motor 201 can generate electricity, and then store the electricity in the battery for later use; therefore, in this mode, the functions of starting and stopping the engine 101 and extending the range of power generation can be realized; compared with the traditional two motors, the present application reduces one motor, so the space occupied by the power system is reduced as a whole, which can increase the space of the vehicle for better layout.

[0027] In some embodiments, the power system further includes a reducer 30 , which includes a first gear 301 . The first gear 301 is sleeved on the outer periphery of the first rotating shaft 203 through a third bearing 13 and is connected to the second clutch 50 .

[0028] In some embodiments, the reducer 30 also includes a second gear 302 meshing with the first gear 301, a third gear 303 coaxially arranged with the second gear 302, and a fourth gear 304 meshing with the third gear 303, the outer diameter of the second gear 302 is larger than the outer diameters of the first gear 301 and the third gear 303, and the outer diameter of the fourth gear 304 is larger than the outer diameter of the third gear 303.

[0029] In some embodiments, the second gear 302 and the third gear 303 are connected via a fourth rotating shaft 305 , and portions of the fourth rotating shaft 305 close to both ends are respectively provided with fourth bearings 14 .

[0030] In some embodiments, the fourth gear 304 is connected with the differential 70 .

[0031] In some embodiments, the power system further includes a control switch 60, which is connected to the first clutch 40 and the second clutch 50. The first clutch and the second clutch can be closed and engaged by the control switch. When the control switch is operated to engage the first clutch with the motor, the function of extended range power generation can be realized; when the control switch is operated to engage the second clutch with the reducer, the driving of the whole vehicle can be realized.

[0032] like Figure 1 As shown, the power system also includes a second clutch 50, which is arranged on the left side of the motor 201 axial direction and connected to the first rotating shaft 203. Specifically, the second clutch 50 is sleeved on the outer periphery of the first rotating shaft 203 and is fixedly connected to the first rotating shaft 203. The second clutch 50 and the first rotating shaft 203 can be splined or fixed with bolts. The connection method is not specifically limited in this application. The driven end of the second clutch 50 is connected to the first gear 301, which can be welded or fixed with bolts. The connection method is not specifically limited in this application. When the second clutch 50 is engaged with the first gear 301, it can drive the first gear 301 to rotate.

[0033] like Figure 1 As shown, the power system also includes a reducer 30, which is used to connect with the wheels to drive the vehicle; the reducer 30 includes but is not limited to a gear reducer; the reducer 30 includes a first gear 301, and the first gear 301 is sleeved on the outer periphery of the first rotating shaft 203 through a second bearing 12; the first gear 301 is also connected to the second clutch 50; when the control switch 60 is in position A, the second clutch 50 is engaged with the first gear 301, the motor 201 works to rotate the first rotating shaft 203, the first rotating shaft 203 drives the second clutch 50 to work, and the second clutch 50 drives the first gear 301 to rotate. The control switch 60 in the present application is used to control the engagement and disconnection of the first clutch 40 and the second clutch 50 with other connected parts. When the control switch 60 is in position C, the first clutch 40 is engaged with the motor 201, and the second clutch 50 is disconnected; when the control switch 60 is in position A, the second clutch 50 is engaged with the reducer 30, and the first clutch 40 is disconnected. The motor 201 works to rotate the first shaft 203, and the first shaft 203 drives the second clutch 50 to work, and the second clutch 50 then drives the first gear 301 to rotate, that is, drives the reducer 30 to work, thereby realizing the driving of the whole vehicle. The control switch 60 in the present application can be controlled by a hydraulic system, or it can be electrically controlled by a relay, that is, by connecting or disconnecting the electromagnetic coil to realize the control of the clutch.

[0034] like Figure 1As shown, the reducer 30 also includes a second gear 302, which is meshed with the first gear 301. When the first gear 301 rotates, the second gear 302 can be driven to rotate; it also includes a third gear 303, which is arranged along the same axial direction as the second gear 302, and when the second gear 302 rotates, the third gear 303 can be driven to rotate. Specifically, the third gear 303 and the second gear 302 are sleeved on the outer periphery of the fourth rotating shaft 305 along the same axial direction, and the fourth rotating shaft 305 is provided with a fourth bearing 14 near both ends. Specifically, the fourth rotating shaft 305 is sleeved with a fourth bearing 14 near the left end, the fourth bearing 14 on the left side is arranged on the left side of the second gear 302, the fourth rotating shaft 305 is sleeved with a fourth bearing 14 near the right end, and the fourth bearing 14 on the right side is arranged on the right side of the third gear 303; the present application includes but is not limited to using two fourth bearings 14, and multiple fourth bearings 14 can also be used. The fourth bearing 14 can improve the stability of the third gear 303 and the second gear 302 during operation; the fourth gear 304 is also included, the fourth gear 304 is meshed with the third gear 303, and when the third gear 303 rotates, the fourth gear 304 can be driven to rotate, and the fourth gear 304 is used to connect with the wheel; wherein the outer diameter of the second gear 302 is greater than the outer diameters of the first gear 301 and the third gear 303, and the outer diameter of the fourth gear 304 is greater than the outer diameter of the third gear 303, so the reducer 30 can achieve two-stage reduction, and the reducer 30 can achieve the effect of vehicle reduction and torque increase through two-stage reduction; the output end of the reducer 30 is also provided with a differential 70, specifically, the input end of the differential 70 is connected to the fourth gear 304, and the output end of the differential 70 is connected to the wheel, specifically, the differential 70 has output ends on both sides of the axial direction, and the output ends on both sides are respectively connected to the wheels on both sides, and the speed difference of the wheels on both sides can be adjusted by the differential 70.

[0035] The power system described in the present application includes an engine assembly 10, a motor 201, a first clutch 40, a second clutch 50 and a control switch 60. The clutch can be separated and engaged by the control switch 60. When the control switch 60 is in position B, the first clutch 40 and the second clutch 50 are both disconnected, and the engine 101 and the motor 201 are not running; the vehicle is in a parking state; when the control switch 60 is in position A, the first clutch 40 is disconnected, the second clutch 50 is engaged with the reducer 30, and the motor 201 is disconnected from the engine 101, and the motor 201 runs to drive the second clutch 50 is running, the second clutch 50 drives the reducer 30 to run so as to realize the driving of the whole vehicle. At this time, the motor 201 can generate electricity while driving the whole vehicle to realize resource recycling; when the control switch 60 is in position C, the second clutch 50 is disconnected, and the first clutch 40 is engaged with the motor 201. At this time, the motor 201 is connected to the engine 101, and the operation of the motor 201 drives the first clutch 40 to run. The first clutch 40 starts the engine 101 through the second rotating shaft 202 and the third rotating shaft 102. After the engine 101 is started, it drives the motor 201 to run, which can realize the function of extended range power generation. Compared with the traditional range extension scheme using two motors, the power system of the present application reduces one motor, reduces the space occupied by the power system as a whole, and can increase the space of the vehicle so as to better arrange the various components of the vehicle.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection", "fixation" 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0040] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A power system, characterized in that: include: Motor (201), the power system comprises only one motor (201); A first rotating shaft (203), the first rotating shaft (203) being fixedly connected to the motor (201), and the first rotating shaft (203) being provided with a through hole (204) along the axial direction; A second rotating shaft (202), the second rotating shaft (202) axially passing through a through hole (204) of the first rotating shaft (203); A first clutch (40), the first clutch (40) being arranged on one side of the axial direction of the motor (201) and connected to the second rotating shaft (202), and the first clutch (40) being also connected to the motor (201); and A second clutch (50), the second clutch (50) is arranged on the other axial side of the motor (201) and is connected to the first rotating shaft (203).

2. The power system according to claim 1, characterized in that: The diameter of the through hole (204) is greater than the diameter of the second rotating shaft (202); the first rotating shaft (203) and the second rotating shaft (202) are coaxially arranged.

3. The power system according to claim 2, characterized in that: Portions of the second rotating shaft (202) close to both axial ends are respectively sleeved with first bearings (11), and the first bearings (11) are accommodated inside the through hole (204).

4. The power system according to claim 3, characterized in that: Second bearings (12) are respectively provided at portions of the first rotating shaft (203) close to both axial ends.

5. The power system according to claim 4, characterized in that: The power system also includes an engine assembly (10), wherein the engine assembly (10) includes a third rotating shaft (102), wherein the third rotating shaft (102) and the second rotating shaft (202) are arranged along the same axial direction, and wherein the third rotating shaft (102) and the second rotating shaft (202) are connected via a shock absorber (80).

6. The power system according to claim 5, characterized in that: The power system further comprises a reducer (30), wherein the reducer (30) comprises a first gear (301), wherein the first gear (301) is sleeved on the outer periphery of the first rotating shaft (203) via a third bearing (13) and is connected to the second clutch (50).

7. The power system according to claim 6, characterized in that: The reducer (30) further comprises a second gear (302) meshed with the first gear (301), a third gear (303) coaxially arranged with the second gear (302), and a fourth gear (304) meshed with the third gear (303); the outer diameter of the second gear (302) is greater than the outer diameters of the first gear (301) and the third gear (303); and the outer diameter of the fourth gear (304) is greater than the outer diameter of the third gear (303).

8. The power system according to claim 7, characterized in that: The second gear (302) and the third gear (303) are connected via a fourth rotating shaft (305), and portions of the fourth rotating shaft (305) close to both ends are respectively provided with fourth bearings (14).

9. The power system according to claim 8, characterized in that: The fourth gear (304) is connected to a differential (70).

10. The power system according to claim 9, characterized in that: The power system further comprises a control switch (60), wherein the control switch (60) is connected to the first clutch (40) and the second clutch (50).

Images