Hybrid power system and automobile

Abstract

The utility model provides a hybrid power system and an automobile, and relates to the technical field of automobile parts, the hybrid power system comprises a first motor, a second motor, an output shaft, an output gear set and a differential mechanism, the output gear set is arranged on the output shaft, and the output gear set and the output shaft are used for synchronous rotation; a rotor of the first motor is in driving connection with the output shaft, a rotor of the second motor is in driving connection with the output shaft through the output gear set, the output gear set is meshed with a differential input gear ring of the differential, and at least part of projection of the second motor and at least part of projection of the differential in the axial direction of the output shaft coincide. At least partial projections of the second motor and the first motor on a plane perpendicular to the axial direction of the output shaft coincide. According to the hybrid power system, double-motor pure electric driving can be achieved, and the integration level in the longitudinal direction of the automobile is also considered while the integration level in the transverse direction of the automobile is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a hybrid power system and an automobile. Background Art

[0002] At present, pure electric vehicles have disadvantages such as short driving range and the need for owners to install charging piles, which need to be improved and transitioned. In this transitional stage, hybrid vehicles that combine the advantages of fuel vehicles and pure electric vehicles have come into being. Hybrid vehicles have the driving experience and power performance of pure electric vehicles, but also have no mileage anxiety, and are favored by many users. In some existing hybrid vehicles, their hybrid systems usually include dual motors and engines. However, of the dual motors, only one is often used as an electric motor to ultimately transmit its power to the differential, and the other is only used as a generator, which generates electricity through the engine. As a result, if the motor used as an electric motor wants to have a larger output power and output torque, it is necessary to make the axial size of the motor used as an electric motor larger, resulting in a larger axial size of the hybrid system (lateral size of the car), which occupies more lateral space of the car. Utility Model Content

[0003] The utility model aims to solve the problem that the existing hybrid power system has a large axial dimension and occupies more lateral space of the vehicle.

[0004] To solve the above problems, the utility model provides a hybrid power system, including a first motor, a second motor, an output shaft, an output gear set and a differential, the output gear set is arranged on the output shaft and the two are used for synchronous rotation, the rotor of the first motor is drivingly connected to the output shaft, the rotor of the second motor is drivingly connected to the output shaft through the output gear set, the output gear set is meshed with the differential input gear ring of the differential, the second motor and the differential at least partially overlap in their projections on the axial direction of the output shaft, and the second motor and the first motor at least partially overlap in their projections on a plane perpendicular to the axial direction of the output shaft.

[0005] The hybrid power system provided by the utility model has, compared with the prior art, but is not limited to the following technical effects:

[0006] When a single motor drive is required, the first motor can output power to rotate the output shaft, and then transmit the power to the differential input gear ring through the output gear set, and finally drive the two half shafts of the car to rotate. In addition, since the second motor can be connected to the output shaft through the output gear set, that is, the second motor can also drive the output gear set and the output shaft to rotate together, and then dual-motor drive can also be achieved, that is, the power of the first motor and the second motor is transmitted to the differential input gear ring together, so that high power and high torque output under pure electric drive can be achieved, and the axial size of a single motor does not need to be too large, which can improve the axial integration of the hybrid system and reduce the occupation of the lateral space of the car. In addition, since the projections of the second motor and the differential in the axial direction at least partially overlap, that is to say, the lateral space of the vehicle occupied by the second motor and the differential is smaller than the sum of the axial dimensions of the two, the axial integration of the hybrid system can be further improved, and the lateral space occupied by the vehicle can be further reduced; and at least part of the projections of the second motor and the first motor on the plane perpendicular to the axial direction of the output shaft overlap, that is to say, the longitudinal space of the vehicle occupied by the two motors is smaller than the sum of the diameter dimensions of the two motors, and thus the longitudinal integration of the hybrid system in the vehicle can be improved, and the longitudinal space occupied by the vehicle can be reduced.

[0007] Furthermore, the hybrid power system also includes a planetary gear structure, the first motor is drivingly connected to the output shaft through the planetary gear structure, the input part of the planetary gear structure is connected to the rotor of the first motor and the two are used for synchronous rotation, and the output part of the planetary gear structure is connected to the output shaft and the two are used for synchronous rotation.

[0008] Furthermore, the sun gear of the planetary gear structure is the input part of the planetary gear structure, and the planet carrier of the planetary gear structure is the output part of the planetary gear structure.

[0009] Furthermore, at least a portion of the planetary gear structure in the axial direction is located inside the rotor of the first motor.

[0010] Further, the output gear set includes an output pinion gear, the output pinion gear is meshed with the differential input ring gear, and the diameter of the differential input ring gear is larger than that of the output pinion gear.

[0011] Furthermore, the hybrid power system also includes a transmission gear and a transmission shaft, the output gear set also includes an output large gear, and the second motor is coaxially arranged with the transmission shaft, the transmission gear is arranged on the transmission shaft, and the transmission gear is meshed with the output large gear.

[0012] Furthermore, the hybrid power system also includes a clutch, and the transmission shaft is connected to the rotor of the second motor through the clutch.

[0013] Furthermore, the hybrid power system further comprises an engine, wherein an engine input shaft of the engine is coaxially connected to a rotor of the second motor and the two are configured to rotate synchronously.

[0014] Further, the output shaft is coaxially arranged with the first motor, and / or the second motor is located on a side of the output shaft away from the differential; and / or the differential and the first motor at least partially overlap in projection on a plane perpendicular to the axial direction of the output shaft.

[0015] The utility model also provides a car, comprising the hybrid power system as mentioned above.

[0016] Since the technical improvements and technical effects of the automobile are the same as those of the hybrid power system, the automobile will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a hybrid power system according to an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a power transmission path of a multi-power system in a first working mode according to an embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the power transmission path of the multi-power system in the second working mode of the embodiment of the utility model;

[0020] Figure 4 A schematic diagram of a power transmission path of a multi-power system in a third working mode according to an embodiment of the utility model;

[0021] Figure 5 A schematic diagram of a power transmission path of a multi-power system in a fourth working mode according to an embodiment of the utility model;

[0022] Figure 6 Schematic diagram of the power transmission path of the multi-power system of the embodiment of the utility model in the fifth working mode.

[0023] Description of reference numerals:

[0024] 11. First motor; 12. Second motor; 13. Output shaft; 14. Output gear set; 141. Output large gear; 142. Output small gear; 15. Differential; 151. Differential input ring gear; 16. Planetary gear structure; 161. Sun gear; 162. Planet carrier; 163. Ring gear; 164. Planetary gear; 17. Transmission gear; 18. Transmission shaft; 19. Engine; 191. Engine input shaft; 20. Clutch; 21. Battery. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. Although some embodiments of the utility model are shown in the accompanying drawings, it should be understood that the utility model can be implemented in various forms and should not be interpreted as being limited to the embodiments described here. On the contrary, these embodiments are provided to more thoroughly and completely understand the utility model. It should be understood that the drawings and embodiments of the utility model are only for exemplary purposes and are not used to limit the scope of protection of the utility model.

[0026] The X-axis in the drawings represents the horizontal direction and is designated as the front-to-back position, and the positive direction of the X-axis represents the front side, and the reverse direction of the X-axis represents the rear side; the Y-axis in the drawings represents the left-to-right position, and the positive direction of the Y-axis represents the left side, and the reverse direction of the Y-axis represents the right side. It should also be noted that the aforementioned Y-axis and X-axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.

[0027] The term "including" and its variations used in this article are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present utility model are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0028] It should be noted that the modifications of "one" and "multiple" mentioned in the utility model are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more". The "connection" mentioned in the utility model should be understood as either a direct connection or an indirect connection unless otherwise clearly indicated in the context.

[0029] See also Figure 1A hybrid power system of an embodiment of the utility model includes a first motor 11, a second motor 12, an output shaft 13, an output gear set 14 and a differential 15, wherein the output gear set 14 is arranged on the output shaft 13 and the two are used for synchronous rotation, the rotor of the first motor 11 is drivingly connected to the output shaft 13, the rotor of the second motor 12 is drivingly connected to the output shaft 13 through the output gear set 14, the output gear set 14 is meshed with the differential input gear ring 151 of the differential 15, the second motor 12 and the differential 15 at least partially overlap in the axial direction of the output shaft 13, and the second motor 12 and the first motor 11 at least partially overlap in the plane perpendicular to the axial direction of the output shaft 13.

[0030] It should be noted that the "axial direction of the output shaft 13" in the present invention refers to the lateral direction of the vehicle, that is, Figure 1 Y-axis direction. The projections of the second motor 12 and the differential 15 on the axial direction of the output shaft 13 at least partially overlap, which means that the second motor 12 and the differential are regarded as a vector along their respective axial directions, and the axial vector of the second motor 12 and the axial vector of the differential are projected on the axial vector of the output shaft 13, and at least part of the projections of the two overlap, which is also equivalent to that the projections of the two motors on the first vertical plane (the vertical plane parallel to the Y axis) and the projection of the differential 15 on the first vertical plane at least partially overlap. The projections of the second motor 12 and the first motor 11 on the plane perpendicular to the axial direction of the output shaft 13 at least partially overlap, which means that the projection of the second motor 12 on the second vertical plane (the vertical plane parallel to the X axis and perpendicular to the Y axis) and the projection of the first motor 11 on the second vertical plane at least partially overlap, thereby achieving that the hybrid system has a good integration degree in the direction perpendicular to the Y axis (for example, in the X axis direction) while taking into account the integration degree in the Y axis direction.

[0031] In this embodiment, when a single motor drive is required, the first motor 11 can output power to rotate the output shaft 13, and then transmit the power to the differential input ring gear 151 through the output gear set 14, and finally drive the two half shafts of the car to rotate. In addition, since the second motor 12 is connected to the output shaft 13 through the output gear set 14, that is, the second motor 12 can also drive the output gear set 14 and the output shaft 13 to rotate together, and then dual-motor drive can also be achieved, that is, the power of the first motor 11 and the second motor 12 is transmitted to the differential input ring gear 151 together, so that high power and high torque output under pure electric drive can be achieved, and the axial size of a single motor does not need to be too large, the cost is low, and the axial integration of the hybrid system can also be improved, reducing the occupation of the lateral space of the car.

[0032] In addition, since the projections of the second motor 12 and the differential 15 in the axial direction at least partially overlap, that is to say, the lateral space of the vehicle occupied by the second motor 12 and the differential 15 is less than the sum of the axial dimensions of the two, the axial integration of the hybrid system can be further improved, and the occupation of the lateral space of the vehicle can be further reduced; and the projections of the second motor 12 and the first motor 11 in the plane perpendicular to the axial direction of the output shaft 13 at least partially overlap, that is to say, the longitudinal space of the vehicle occupied by the two motors is less than the sum of the diameter dimensions of the two, and thus the longitudinal integration of the hybrid system in the vehicle can be improved, and the occupation of the longitudinal space of the vehicle can be reduced.

[0033] See also Figure 1 Optionally, the hybrid system also includes a planetary gear structure 16, the first motor 11 is drivingly connected to the output shaft 13 through the planetary gear structure 16, the input part of the planetary gear structure 16 is connected to the rotor of the first motor 11 and the two are used for synchronous rotation, and the output part of the planetary gear structure 16 is connected to the output shaft 13 and the two are used for synchronous rotation.

[0034] In this embodiment, the first motor 11 is not directly connected to the output shaft 13, but is connected to the output shaft 13 through a planetary gear structure 16. Specifically, the rotor of the first motor 11 is connected to the input part of the planetary gear structure 16 and can rotate synchronously, and the output part of the planetary gear structure 16 is connected to the output shaft 13 and the two can rotate synchronously. When the first motor 11 is used as an electric motor for power output, the setting of the planetary gear structure 16 can reduce the speed of the first motor 11 and increase the torque of the first motor 11. In this way, when the car is driving at a low speed or in the starting stage, power output can be performed only through the first motor 11, because pure electric drive can provide faster and smoother power output, while also reducing noise and exhaust emissions.

[0035] See also Figure 1 Optionally, the sun gear 161 of the planetary gear structure 16 is the input part of the planetary gear structure 16 , and the planet carrier 162 of the planetary gear structure 16 is the output part of the planetary gear structure 16 .

[0036] In this embodiment, the sun gear 161 of the planetary gear structure 16 is used as the input part, the sun gear 161 is connected to the rotor of the first motor 11 and is used for synchronous rotation, the planet carrier 162 of the planetary gear structure 16 is the output part, the planet carrier 162 is connected to the output shaft 13 and is used for synchronous rotation, and the ring gear 163 of the planetary gear structure 16 is fixed, the ring gear 163 can be fixedly connected to the fixed housing of the hybrid power system, and the planetary gear 164 on the planet carrier 162 is respectively meshed with the sun gear 161 and the ring gear 163. In this way, with the sun gear 161 as the input part and the planet carrier 162 as the output part, this form of planetary gear structure 16 can have a higher transmission ratio, can better reduce the speed and increase the torque of the first motor 11, and is conducive to the pure electric drive of the car.

[0037] In other embodiments, the sun gear 161 still serves as the input part, but the planet carrier 162 is fixed, and the ring gear 163 serves as the output part and is connected to the output shaft 13. This form of planetary gear structure 16 can also play a role in decelerating and increasing the torque of the first motor 11.

[0038] See also Figure 1 Optionally, at least part of the planetary gear structure 16 is axially located inside the rotor of the first motor 11 .

[0039] In this embodiment, at least part of the planetary gear structure 16 is axially located inside the rotor of the first motor 11 , which can reduce the lateral space of the vehicle additionally occupied by the planetary gear structure 16 , thereby making the hybrid power system more integrated in the lateral direction of the vehicle.

[0040] See also Figure 1 Optionally, the output gear set 14 includes an output pinion 142 , the output pinion 142 is meshed with the differential input ring gear 151 , and the diameter of the differential input ring gear 151 is larger than that of the output pinion 142 .

[0041] In this embodiment, the output pinion 142 rotates with the output shaft 13. Since the output pinion 142 has a small diameter, it can be an integral structure with the output shaft 13 to prevent the unstable connection effect. The output gear set 14 is specifically meshed with the differential input ring gear 151 through the output pinion 142. The output pinion 142 has a small diameter, which is smaller than the differential input ring gear 151. In this way, when the speed is transmitted to the differential input ring gear 151 through the output pinion 142, the speed can be reduced and the torque can be increased again to meet the speed and torque requirements of the differential 15.

[0042] See also Figure 1Optionally, the hybrid system further includes a transmission gear 17 and a transmission shaft 18, the output gear set 14 further includes an output large gear 141, and the second motor 12 is coaxially arranged with the transmission shaft 18, the transmission gear 17 is arranged on the transmission shaft 18, and the transmission gear 17 is meshed with the output large gear 141.

[0043] When the second motor is used as a motor, the power of the second motor 12 can be transmitted to the output pinion 142 through the gear pair of the transmission gear 17 and the output gear 14. In this way, the transmission ratio of the transmission gear 17 and the output gear 141 can be designed according to actual needs to achieve parallel power output of the second motor 12 and the first motor 11, and even to achieve the power output of the second motor 12 alone; when the second motor 12 outputs power alone, the first motor 11 does not work (neither used as a motor nor as a generator). At this time, the gear pair of the transmission gear 17 and the output gear 14 can be used as a parallel shaft reduction structure to reduce speed and increase torque for the second motor 12. Among them, the second motor 12 is coaxially arranged with the transmission shaft 18 and the transmission gear 17, which can further improve the integration of the hybrid system in the longitudinal direction of the vehicle.

[0044] In this embodiment, the output gear 141 and the output shaft 13 can be splined, the transmission gear 17 and the transmission shaft 18 can also be splined, and the output shaft 13 and the planetary carrier 162 are splined. In this way, the speed ratio of the output gear 141 and the transmission gear 17 can be selected and replaced according to actual needs.

[0045] Alternatively, see Figure 1 The hybrid system further includes a clutch 20 , and the transmission shaft 18 is connected to the rotor of the second motor 12 via the clutch 20 .

[0046] In this embodiment, the horizontal cross-section of the transmission shaft 18 is T-shaped, with a transmission gear 17 installed at one end and the other end connected to the rotor of the second motor 12 through a clutch 20. When the clutch 20 is engaged, the second motor 12 can be used as an electric motor to drive the output large gear 141 of the output gear set 14. When the clutch 20 is disconnected, the engine 19 can enable the second motor 12 to generate electricity.

[0047] Alternatively, see Figure 1 The hybrid system further comprises an engine 19, an engine input shaft 191 of the engine 19 is coaxially connected to the rotor of the second motor 12 and the two are used for synchronous rotation.

[0048] In this embodiment, the second motor 12 can not only output power together with the first motor 11, but also be used as a generator. When the second motor 12 is used as a generator, the power of the engine 19 can be transmitted to the rotor of the second motor 12, and the second motor 12 can generate electricity. The engine input shaft 191 and the rotor of the second motor 12 can be connected by a spline, which is convenient for installation. Among them, the engine 19 and the second motor 12 are coaxially arranged, which can further improve the integration of the hybrid system in the longitudinal direction of the vehicle.

[0049] Alternatively, see Figure 1 , the output shaft 13 is coaxially arranged with the first motor 11, and / or the second motor 12 is located on the side of the output shaft 13 away from the differential 15; and / or the differential 15 coincides with at least part of the projection of the first motor 11 on a plane perpendicular to the axial direction of the output shaft 13.

[0050] In this embodiment, the output shaft 13 is coaxially arranged with the first motor 11, and one end of the output shaft 13 is specifically passed through the sun gear 161 and coaxially fixed with the planetary carrier 162, thereby improving the radial integration of the output shaft 13 and the output gear set 14 with the first motor 11 and the planetary gear structure 16, and further reducing the space occupied by the hybrid system in the longitudinal direction of the vehicle.

[0051] In this embodiment, since the differential input gear ring 151 is specifically meshed with the output pinion 142, and the output pinion 142 has a small diameter, that is, the differential 15 and the output shaft 13 are relatively close in the longitudinal direction of the vehicle. In order to avoid the arrangement of the second motor 12 interfering with the differential 15, the second motor 12 can be arranged on the side of the output shaft 13 away from the differential 15, that is, the second motor 12 and the differential 15 are respectively located on the opposite sides of the output shaft 13, for example, the second motor 12 is arranged on the front side of the output shaft 13, the differential 15 is arranged on the rear side of the output shaft 13, and the second motor 12 is meshed with the output large gear 141 of the output gear set 14 through the transmission shaft 18 and the transmission gear 17 in sequence, so as to realize the indirect driving connection between the second motor 12 and the output gear set 14.

[0052] In this embodiment, the differential 15 overlaps with at least part of the projection of the first motor 11 on a plane perpendicular to the axial direction of the output shaft 13, that is, the projection of the differential 15 on the second vertical plane (a vertical plane parallel to the X-axis) overlaps with the projection of the first motor 11 on the second vertical plane, thereby further improving the integration of the hybrid system in the longitudinal direction of the vehicle.

[0053] In summary, the hybrid power system of the utility model can realize at least the following five working modes:

[0054] The first working mode (also called the single-motor pure electric driving mode) is that the clutch 20 is disconnected. Figure 2 As shown, the first motor 11 is used as an electric motor and is powered by the battery 21. The power transmission path is: first motor 11-sun gear 161-planetary gear 164-planet carrier 162-output shaft 13-output pinion 142-differential input ring gear 151. This mode is suitable for low-speed driving or starting of the car.

[0055] The second working mode (also called the dual-motor pure electric driving mode, or the dual-motor parallel mode) is that the clutch 20 is engaged, such as Figure 3 As shown, the first motor 11 and the second motor 12 are both used as electric motors, and are powered by the battery 21. There are two power transmission paths, one of which is: the first motor 11-sun gear 161-planetary gear 164-planet carrier 162-output shaft 13-output pinion 142-differential input ring gear 151; the other is: the second motor 12-transmission shaft 18-transmission gear 17-output large gear 141-output shaft 13-output pinion 142-differential input ring gear 151. Among them, the engine input shaft 191 is idling, and the engine 19 does not work. This mode can be applied to the acceleration stage and the rapid acceleration stage of the car.

[0056] The third working mode (also called series mode or extended range mode) is that the clutch 20 is disconnected. Figure 4 As shown, the second motor 12 is used as a generator, and the first motor 11 is used as a motor. There are two power transmission paths. One path is: engine 19-rotor of the second motor 12. This power transmission path is to make the second motor 12 generate electricity through the operation of the engine 19. The electricity generated by the second motor 12 can be stored in the battery 21 or / and supplied to the first motor 11. The other path is: first motor 11-sun gear 161-planetary gear 164-planet carrier 162-output shaft 13-output pinion 142-differential input ring gear 151. This mode is applicable to the situation where the car battery 21 has no power or insufficient power.

[0057] The fourth working mode (also called the engine direct drive mode) is that the clutch 20 is engaged, such as Figure 5 As shown, the first motor 11 and the second motor 12 are neither generators nor motors. The power transmission path is: engine 19-rotor of the second motor 12-transmission shaft 18-transmission gear 17-output large gear 141-output shaft 13-output small gear 142-differential input ring gear 151. This mode is suitable for high-speed driving of the car, with low fuel consumption and improved fuel economy.

[0058] The fifth working mode (also known as the parking charging mode), in this mode, the clutch 20 is disconnected, the second motor 12 is used as a generator, and the power transmission path is: engine 19-the rotor of the second motor 12. This power transmission path is to operate the engine 19 to enable the second motor 12 to generate electricity, and the electricity generated by the second motor 12 can be stored in the battery 21.

[0059] In summary, the hybrid system of the utility model can realize at least five working modes as shown in Table 1 below: engine direct drive mode, dual-motor pure electric drive mode, series mode, single-motor drive mode and parking charging. The driver can switch different driving modes according to different road conditions, taking into account the economy and power of the vehicle. Figure 2-6 In the figure, the direction of the solid arrow refers to the direction of the power transmission path, and the direction of the non-solid arrow refers to the direction of the power transmission path.

[0060] Drive mode (working mode) clutch Engine direct drive mode join Dual-motor pure electric driving mode join Parking charging mode disconnect Series Mode disconnect First motor single motor drive mode disconnect

[0061] Table 1

[0062] Another embodiment of the present invention provides a car, comprising the hybrid power system as described above.

[0063] Since the technical improvements and technical effects of the automobile are the same as those of the hybrid power system, the automobile will not be described in detail.

[0064] 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 technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0065] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A hybrid power system, characterized in that: The invention comprises a first motor (11), a second motor (12), an output shaft (13), an output gear set (14) and a differential (15); the output gear set (14) is arranged on the output shaft (13) and the two are used for synchronous rotation; the rotor of the first motor (11) is drivingly connected to the output shaft (13); the rotor of the second motor (12) is drivingly connected to the output shaft (13) through the output gear set (14); the output gear set (14) is meshed with a differential input gear ring (151) of the differential (15); the projections of the second motor (12) and the differential (15) on the axial direction of the output shaft (13) at least partially overlap; the projections of the second motor (12) and the first motor (11) on a plane perpendicular to the axial direction of the output shaft (13) at least partially overlap.

2. The hybrid power system according to claim 1, characterized in that: It also includes a planetary gear structure (16), the first motor (11) is drivingly connected to the output shaft (13) through the planetary gear structure (16), the input part of the planetary gear structure (16) is connected to the rotor of the first motor (11) and the two are used for synchronous rotation, and the output part of the planetary gear structure (16) is connected to the output shaft (13) and the two are used for synchronous rotation.

3. The hybrid power system according to claim 2, characterized in that: The sun gear (161) of the planetary gear structure (16) is the input part of the planetary gear structure (16), and the planet carrier (162) of the planetary gear structure (16) is the output part of the planetary gear structure (16).

4. The hybrid power system according to claim 2, characterized in that: At least a portion of the planetary gear structure (16) is located in the rotor of the first motor (11) in the axial direction.

5. The hybrid power system according to claim 1, characterized in that: The output gear set (14) comprises an output pinion (142), the output pinion (142) meshes with the differential input ring gear (151), and the differential input ring gear (151) has a larger diameter than the output pinion (142).

6. The hybrid power system according to claim 5, characterized in that: It also includes a transmission gear (17) and a transmission shaft (18), the output gear set (14) also includes an output large gear (141), and the second motor (12) and the transmission shaft (18) are coaxially arranged, the transmission gear (17) is arranged on the transmission shaft (18), and the transmission gear (17) is meshed with the output large gear (141).

7. The hybrid power system according to claim 6, characterized in that: It also includes a clutch (20), and the transmission shaft (18) is connected to the rotor of the second motor (12) through the clutch (20).

8. The hybrid power system according to claim 1, characterized in that: It also includes an engine (19), wherein an engine input shaft (191) of the engine (19) is coaxially connected to the rotor of the second motor (12), and the two are used for synchronous rotation.

9. The hybrid power system according to claim 1, characterized in that: The output shaft (13) is coaxially arranged with the first motor (11), and / or the second motor (12) is located on a side of the output shaft (13) away from the differential (15); and / or the differential (15) and the first motor (11) at least partially overlap in projection on a plane perpendicular to the axial direction of the output shaft (13).

10. An automobile, characterized in that: Comprising a hybrid power system as described in any one of claims 1-9.

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