Power system and automobile

Abstract

The utility model relates to the technical field of power transmission arrangement, in particular to a power system and an automobile, the power system comprises a first planetary gear train, a first motor, an engine, a second planetary gear train, an output mechanism and a second motor, the first planetary gear train comprises a first sun gear, a first planet gear, a first planet carrier and a first gear ring, the first sun gear, the first planet gear and the first gear ring are sequentially meshed, and the first planet gear is in transmission connection with the first planet carrier. The first motor is in transmission connection with the first sun gear. The engine is in transmission connection with the first planet carrier. The first gear ring is in transmission connection with the output mechanism. The second planetary gear train is in transmission connection with the second motor and the output mechanism. By adjusting the power output by the first motor, the second motor and the engine, the adaptive capacity to road conditions is improved.

Description

Technical Field

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

[0002] A car is a common means of transportation that achieves its function of traveling by transmitting power to wheels.

[0003] A car generally includes a power source, a transmission mechanism and an output mechanism. The transmission mechanism can transmit the power of the power source to the output mechanism.

[0004] In the related art, the road conditions on which the car travels are relatively complex, and the transmission mechanism has a relatively simple adjustment mode for power, so its adaptability to complex road conditions is relatively poor. Utility Model Content

[0005] In view of this, the present application provides a power system and a vehicle to improve the adaptability to road conditions.

[0006] Specifically, the following technical solutions are included:

[0007] A first aspect of the present application provides a power system, the power system comprising a first planetary gear train, a first motor, an engine, a second planetary gear train, an output mechanism, and a second motor, wherein:

[0008] The first planetary gear train includes a first sun gear, a first planetary gear, a first planet carrier and a first ring gear. The first sun gear, the first planetary gear and the first ring gear are meshed in sequence, and the first planetary gear is drivingly connected to the first planet carrier.

[0009] The first motor is drivingly connected to the first sun gear.

[0010] The engine is drivingly connected to the first planetary carrier.

[0011] The first gear ring is drivingly connected to the output mechanism.

[0012] The second planetary gear train is drivingly connected to the second motor and the output mechanism.

[0013] Optionally, the first gear ring has a first tooth portion and a second tooth portion, the first tooth portion is located on the inner side of the first gear ring and meshes with the first planetary gear, and the second tooth portion is located on the outer side of the first gear ring and is transmission-connected to the output mechanism.

[0014] Optionally, the power system includes a first clutch unit connecting the first sun gear and the first motor.

[0015] Optionally, the power system includes a first shaft. The first clutch unit is located at one end of the first shaft, and the first sun gear is located at the other end of the first shaft. The first shaft is drivingly connected to the first clutch unit and the first sun gear.

[0016] Optionally, the power system includes a second clutch unit, and the second clutch unit connects the first planet carrier and the engine.

[0017] Optionally, the power system includes a second shaft. The second clutch unit is located at one end of the second shaft, and the planet carrier is located at the other end of the second shaft. The second shaft is drivingly connected to the second clutch unit and the first planet carrier.

[0018] Optionally, the second planetary gear train includes a second sun gear, second planet gears, a second planet carrier, and a second ring gear. The second sun gear, the second planet gears, and the second ring gear are meshed in sequence. The second planet gears are drivingly connected to the second planet carrier. The second ring gear is locked. The second sun gear is drivingly connected to the second motor. The second planet carrier is drivingly connected to the output mechanism.

[0019] Optionally, the second planetary gear train includes a reduction shaft and a first reduction gear. The first reduction gear is sleeved on the reduction shaft and is drivingly connected to the reduction shaft. The output mechanism has a second reduction gear, and the first reduction gear meshes with the second reduction gear.

[0020] Optionally, the first planetary gear train and the second planetary gear train are respectively located on opposite sides of the output mechanism.

[0021] A second aspect of the present application provides an automobile, and the automobile includes the power system as described in the above technical solution.

[0022] The beneficial effects of the technical solution provided by the embodiments of the present application at least include: The first motor and the engine can transmit power to the output mechanism through the first planetary gear train, and the second motor can transmit power to the output mechanism through the second planetary gear train. Since there are two relatively independent power transmission paths, the power obtained by the output mechanism can be diversified to adapt to complex road conditions. The first planetary gear train can adjust the power output by the first motor and the engine to the output mechanism, so as to improve the degree of power diversification. The second planetary gear train can also adjust the power output by the second motor, thereby improving the degree of power diversification.

[0023] In summary, the present application adjusts the power output by the first motor, the second motor, and the engine to improve the adaptability to road conditions. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0025] Figure 1 Structural schematic diagram of a power system provided by an embodiment of the present application;

[0026] Figure 2 Power transmission diagram of working mode 1 provided by an embodiment of the present application;

[0027] Figure 3 Power transmission diagram of working mode 2 provided by an embodiment of the present application;

[0028] Figure 4 Power transmission diagram of working mode 3 provided by an embodiment of the present application;

[0029] Figure 5 Power transmission diagram of working mode 4 provided by an embodiment of the present application;

[0030] Figure 6 Power transmission diagram of working mode 5 provided by an embodiment of the present application.

[0031] The reference numerals in the figure respectively represent:

[0032] 1. First planetary gear train; 11. First sun gear; 12. First planetary gear; 13. First planetary carrier; 14. First ring gear; 141. First tooth part; 142. Second tooth part;

[0033] 2. First motor;

[0034] 3. Engine;

[0035] 4. Second planetary gear train; 41. Second sun gear; 42. Second planetary gear; 43. Second planetary carrier; 44. Second ring gear; 45. Reduction shaft; 46. First reduction gear;

[0036] 5. Output mechanism; 51. Second reduction gear;

[0037] 6. Second motor;

[0038] 7. First clutch unit;

[0039] 8. First shaft;

[0040] 9. Second clutch unit;

[0041] 10. Second shaft.

[0042] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as the basis, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientation. When the product is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.

[0045] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0046] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0047] The first aspect of the present application provides a power system, such as Figure 1 As shown, the power system includes a first planetary gear train 1, a first motor 2, an engine 3, a second planetary gear train 4, an output mechanism 5 and a second motor 6, wherein:

[0048] The first planetary gear train 1 comprises a first sun gear 11 , a first planetary gear 12 , a first planet carrier 13 and a first ring gear 14 . The first sun gear 11 , the first planetary gear 12 and the first ring gear 14 are meshed in sequence, and the first planetary gear 12 is drivingly connected to the first planet carrier 13 .

[0049] The first motor 2 is drivingly connected to the first sun gear 11 .

[0050] The engine 3 is drivingly connected to the first planet carrier 13 .

[0051] The first ring gear 14 is drivingly connected to the output mechanism 5 .

[0052] The second planetary gear train 4 is drivingly connected to the second motor 6 and the output mechanism 5 .

[0053] It is understandable that the first motor 2 and the engine 3 can transmit power to the output mechanism 5 through the first planetary gear train 1, and the second motor 6 can transmit power to the output mechanism 5 through the second planetary gear train 4. Due to the existence of two relatively independent power transmission paths, the power obtained by the output mechanism 5 can be diversified to adapt to complex road conditions. The first planetary gear train 1 can adjust the power output by the first motor 2 and the engine 3 to the output mechanism 5, so as to improve the diversification of power. The second planetary gear train 4 can also adjust the power output by the second motor 6, thereby improving the diversification of power.

[0054] In the embodiment of the present application, the first motor 2 can be used as a drive motor or as a generator.

[0055] In the embodiment of the present application, the number of the first planetary gears 12 may be 3, 4, or 5, or may be other numbers.

[0056] In the embodiment of the present application, the first motor 2 is connected to the first sun gear 11 in a transmission manner, and power transmission can be achieved by driving the first sun gear 11 to rotate. The first sun gear 11 can also drive the first motor 2 to rotate, so that the first motor 2 can generate electricity. The first motor 2 and the first sun gear 11 can be connected in a transmission manner by key connection, welding, etc.

[0057] In the embodiment of the present application, the engine 3 is transmission-connected with the first planet carrier 13. The power transmission can be realized by driving the first planet carrier 13 to rotate. The engine 3 and the first planet carrier 13 can be transmission-connected by welding or other methods.

[0058] In the embodiment of the present application, the first gear ring 14 is transmission-connected to the output mechanism 5. The first planetary gear 12 can drive the output mechanism 5 to rotate through the first gear ring 14, and the output mechanism 5 can also drive the first planetary gear 12 to rotate through the first gear ring 14, so that power transmission can be achieved.

[0059] The second planetary gear train 4 is drivingly connected to the second motor 6 and the output mechanism 5 .

[0060] In summary, the present application adjusts the power output by the first motor 2, the second motor 6 and the engine 3 to improve the adaptability to road conditions.

[0061] In some of the embodiments of this application, Figure 1 As shown, the first gear ring 14 has a first tooth portion 141 and a second tooth portion 142 . The first tooth portion 141 is located on the inner side of the first gear ring 14 and meshes with the first planetary gear 12 . The second tooth portion 142 is located on the outer side of the first gear ring 14 and is transmission-connected to the output mechanism 5 .

[0062] It can be understood that the meshing of the first tooth portion 141 with the first planetary gear 12 is conducive to the first planetary gear 12 rotating on itself and revolving around the first sun gear 11 under the support of the first tooth portion 141, thereby achieving power transmission.

[0063] In the embodiment of the present application, the first tooth portions 141 may be arranged at intervals along the rotation direction of the first gear ring 14 and arranged in a ring shape.

[0064] In the embodiment of the present application, the second tooth portions 142 may be arranged at intervals along the rotation direction of the first gear ring 14 and arranged in a ring shape.

[0065] In some of the embodiments of this application, Figure 1 As shown, the power system includes a first clutch unit 7 , and the first clutch unit 7 connects the first sun gear 11 and the first motor 2 .

[0066] It can be understood that when the first clutch unit 7 is engaged, the first motor 2 can transmit power to the first sun gear 11 through the first clutch unit 7; when only the engine 3 transmits power to the output mechanism 5, the first clutch unit 7 can be disconnected, which is helpful to reduce the drag caused by the first motor 2 being dragged by the first sun gear 11, so as to improve the efficiency of power output.

[0067] In the embodiment of the present application, the second clutch unit 9 can be any one of an electromagnetic clutch, a hydraulic clutch or a mechanical clutch.

[0068] In some of the embodiments of this application, Figure 1 As shown, the power system includes a first shaft 8 , a first clutch unit 7 is located at one end of the first shaft 8 , a first sun gear 11 is located at the other end of the first shaft 8 , and the first shaft 8 is transmission-connected to the first clutch unit 7 and the first sun gear 11 .

[0069] It can be understood that the first motor 2 drives the first shaft 8 to rotate through the first clutch unit 7, which can drive the first sun gear 11 to rotate, thereby realizing power transmission.

[0070] In the implementation of the present application, the first shaft 8 and the first sun gear 11 can be connected to each other through key connection, welding, etc. to achieve transmission connection.

[0071] In the embodiment of the present application, the first clutch unit 7 can be transmission-connected to the first shaft 8 by welding.

[0072] In some of the embodiments of this application, Figure 1 As shown, the power system includes a second clutch unit 9 , which connects the first planet carrier 13 and the engine 3 .

[0073] It can be understood that when the second clutch unit 9 is engaged, the power of the engine 3 can be transmitted to the engine 3; when the second clutch unit 9 is disengaged, the power generated by the first motor 2 driving the first planetary gear train 1 can be mainly transmitted to the output mechanism 5 without causing the engine 3 to rotate idly, which is beneficial to improving the power transmission efficiency.

[0074] In the embodiment of the present application, the second clutch unit 9 can be any one of an electromagnetic clutch, a hydraulic clutch or a mechanical clutch.

[0075] In some embodiments of the present application, as Figure 1 shown, the power system includes a second shaft 10. The second clutch unit 9 is located at one end of the second shaft 10, and the planet carrier is located at the other end of the second shaft 10. The second shaft 10 is drivingly connected to the second clutch unit 9 and the first planet carrier 13.

[0076] It can be understood that the engine 3 drives the second shaft 10 to rotate through the second clutch unit 9, and then drives the first planet carrier 13 to rotate, thus realizing the transmission of power. The first planet carrier 13 and the engine 3 are located at both ends of the second shaft 10, which can reduce the interference between the two.

[0077] In the implementation of the present application, the second shaft 10 and the first planet carrier 13 can be drivingly connected by means of key connection, welding, etc.

[0078] In the embodiment of the present application, the second clutch unit 9 can be drivingly connected to the second shaft 10 by welding.

[0079] In some embodiments of the present application, as Figure 1 shown, the second planetary gear train 4 includes a second sun gear 41, second planet gears 42, a second planet carrier 43 and a second ring gear 44. The second sun gear 41, the second planet gears 42 and the second ring gear 44 are meshed in sequence. The second planet gears 42 are drivingly connected to the second planet carrier 43. The second ring gear 44 is locked. The second sun gear 41 is drivingly connected to the second motor 6. The second planet carrier 43 is drivingly connected to the output mechanism 5.

[0080] In the embodiment of the present application, the power system of the present application has 5 working modes, specifically including:

[0081] Working mode one: as Figure 2 shown, the arrows in the figure are the power transmission routes. The second motor 6 works, and power is output (first-stage deceleration) in the way of inputting from the second sun gear 41 and outputting from the second planet carrier 43, and the power is transmitted to the output mechanism 5. At this time, both the first motor 2 and the engine 3 do not work, which is applicable to general working conditions with low requirements for the vehicle power performance.

[0082] Working mode two: as Figure 3As shown in the figure, the arrows in the figure represent the power transmission route. When the first motor 2 operates, the first planetary gear train 1 is fixed through the first planet carrier 13, the first sun gear 11 inputs power, and the first ring gear 14 outputs power (first-stage reduction) to transmit the power to the output mechanism 5. At this time, the second motor 6 is turned off, which is applicable to the working conditions with relatively low requirements for the vehicle's power performance and can improve the vehicle's cruising range.

[0083] Working mode three: As Figure 4 shown in the figure, the arrows in the figure represent the power transmission route. When the first motor 2 operates, the first planetary gear train 1 is fixed through the first planet carrier 13, the first sun gear 11 inputs power, and the first ring gear 14 outputs power (first-stage reduction) to transmit the power to the output mechanism 5. When the second motor 6 operates, it outputs power (first-stage reduction) in the way that the second sun gear 41 inputs and the second planet carrier 43 outputs, and transmits the power to the output mechanism 5. At this time, the vehicle's power output is the largest, the vehicle has sufficient power, fast acceleration response, and can also help the vehicle get out of trouble.

[0084] Working mode four: As Figure 5 shown in the figure, the arrows in the figure represent the power transmission route. Idle charging. At this time, the engine 3 operates, the first ring gear 14 is locked, and the engine 3 inputs through the first planet carrier 13 of the first planetary gear train 1 and outputs through the first sun gear 11 to drive the first motor 2 to work for charging.

[0085] Working mode five: As Figure 6 shown in the figure, the arrows in the figure represent the power transmission route. Engine 3 direct drive. When the vehicle is in a power-depleted state and both motors cannot operate, the first sun gear 11 is locked, and the engine 3 inputs through the first planet carrier 13 of the first planetary gear train 1 and outputs through the first ring gear 14 to transmit the power to the output mechanism 5 (first-stage reduction). This method can solve the problem of range anxiety.

[0086] In some embodiments of the present application, as Figure 1 shown in the figure, the second planetary gear train 4 includes a reduction shaft 45 and a first reduction gear 46. The first reduction gear 46 is sleeved on the reduction shaft 45 and is in transmission connection with the reduction shaft 45. The output mechanism 5 has a second reduction gear 51, and the first reduction gear 46 meshes with the second reduction gear 51.

[0087] It can be understood that the speed of the power transmitted from the second motor 6 by the second planetary gear train 4 is relatively large while the torque is relatively small. Through the cooperation of the first reduction gear 46 and the second reduction gear 51, the function of reducing speed and increasing torque is generated, which is beneficial for the output mechanism 5 to obtain a larger torque to adapt to complex road conditions.

[0088] In the embodiment of the present application, the number of teeth of the first reduction gear 46 is less than that of the second reduction gear 51, thus realizing the function of reducing speed and increasing torque.

[0089] In some embodiments of the present application, as Figure 1 shown, the first planetary gear train 1 and the second planetary gear train 4 are respectively located on opposite sides of the output mechanism 5.

[0090] It can be understood that such an arrangement is beneficial to reducing the interference between the first motor 2, the second motor 6 and the engine 3, and is beneficial to arranging the power system along the length direction of the vehicle on the vehicle body.

[0091] The second aspect of the present application provides an automobile, which includes the power system as described in the above embodiments.

[0092] It can be understood that due to adopting the power system of the above embodiments, the automobile of the present application has the same technical effects as the above embodiments, and will not be elaborated here.

[0093] In the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The term "plurality" means two or more, unless otherwise clearly defined.

[0094] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and the embodiments are only regarded as exemplary.

[0095] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A power system, characterized in that: The power system comprises a first planetary gear train (1), a first motor (2), an engine (3), a second planetary gear train (4), an output mechanism (5) and a second motor (6), wherein: The first planetary gear train (1) comprises a first sun gear (11), a first planetary gear (12), a first planet carrier (13) and a first ring gear (14); the first sun gear (11), the first planetary gear (12) and the first ring gear (14) are meshed in sequence, and the first planetary gear (12) is drivingly connected to the first planet carrier (13); The first motor (2) is drivingly connected to the first sun gear (11); The engine (3) is drivingly connected to the first planet carrier (13); The first gear ring (14) is drivingly connected to the output mechanism (5); The second planetary gear train (4) is transmission-connected to the second motor (6) and the output mechanism (5).

2. The power system according to claim 1, characterized in that: The first gear ring (14) comprises a first tooth portion (141) and a second tooth portion (142); the first tooth portion (141) is located on the inner side of the first gear ring (14) and meshes with the first planetary gear (12); the second tooth portion (142) is located on the outer side of the first gear ring (14) and is transmission-connected to the output mechanism (5).

3. The power system according to claim 1, characterized in that: The power system comprises a first clutch unit (7), wherein the first clutch unit (7) is connected to the first sun gear (11) and the first motor (2).

4. The power system according to claim 3, characterized in that: The power system comprises a first shaft (8), the first clutch unit (7) is located at one end of the first shaft (8), the first sun gear (11) is located at the other end of the first shaft (8), and the first shaft (8) is transmission-connected to the first clutch unit (7) and the first sun gear (11).

5. The power system according to claim 1, characterized in that: The power system comprises a second clutch unit (9), wherein the second clutch unit (9) connects the first planet carrier (13) and the engine (3).

6. The power system according to claim 5, characterized in that: The power system comprises a second shaft (10), the second clutch unit (9) is located at one end of the second shaft (10), the planet carrier is located at the other end of the second shaft (10), and the second shaft (10) is transmission-connected to the second clutch unit (9) and the first planet carrier (13).

7. The power system according to claim 1, characterized in that: The second planetary gear train (4) comprises a second sun gear (41), a second planetary gear (42), a second planet carrier (43) and a second ring gear (44); the second sun gear (41), the second planetary gear (42) and the second ring gear (44) are meshed in sequence; the second planetary gear (42) is drivingly connected to the second planet carrier (43); the second ring gear (44) is locked; the second sun gear (41) is drivingly connected to the second motor (6); and the second planet carrier (43) is drivingly connected to the output mechanism (5).

8. The power system according to claim 7, characterized in that: The second planetary gear train (4) comprises a reduction shaft (45) and a first reduction gear (46); the first reduction gear (46) is sleeved on the reduction shaft (45) and is transmission-connected to the reduction shaft (45); the output mechanism (5) comprises a second reduction gear (51); the first reduction gear (46) is meshed with the second reduction gear (51).

9. The power system according to claim 1, characterized in that: The first planetary gear train (1) and the second planetary gear train (4) are respectively located on two opposite sides of the output mechanism (5).

10. An automobile, characterized in that: The automobile comprises a power system as claimed in any one of claims 1 to 9.

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