Hybrid drive device, control method, and vehicle

Abstract

The present invention provides a hybrid power transmission device, a control method and a vehicle. The transmission device includes an engine and an electric motor, and further includes: a first planetary gear set, the first planetary gear set including a first planetary carrier, a first planetary gear, a first external gear ring and a first sun gear, the first sun gear being connected to the electric motor, the first planetary carrier being connected to the output shaft, wherein the first sun gear and the first external gear ring are respectively connected to a braking assembly; a second planetary gear set, the second planetary gear set including a second planetary carrier, a second planetary gear, a second external gear ring and a second sun gear, the second sun gear being connected to the engine through a clutch assembly, the second planetary carrier being connected to the engine through a clutch assembly, the second external gear ring being connected to the output shaft; wherein, the first external gear ring and the second sun gear are rigidly connected, and the first planetary carrier and the second external gear ring are rigidly connected. The above-mentioned hybrid power transmission device can achieve power output in multiple hybrid modes and multiple gears to meet the actual working conditions or actual requirements, which is beneficial to comprehensively reduce energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle power transmission, and in particular, to a hybrid power transmission device, a control method, and a vehicle. Background Art

[0002] With the continuous improvement of the awareness of energy conservation and emission reduction, conventional power vehicles are difficult to meet people's needs due to structural limitations. As a new type of vehicle power type, hybrid vehicles are in a booming development stage in terms of technology and market, and the hybrid power vehicle drive device occupies an extremely important position.

[0003] At present, due to structural limitations, the hybrid transmission has a single structure. The adjustment of vehicle speed and load capacity depends entirely on the motor, which requires a high level of the motor. The hybrid mode is single, the number of gears is single, and the comprehensive fuel saving rate is low, resulting in a relatively high comprehensive cost.

[0004] In view of the above problems, no effective solution has been proposed yet. Summary of the Invention

[0005] The main object of the present invention is to provide a hybrid power transmission device, a control method, and a vehicle to solve the technical problems of single hybrid mode, single gear, and low fuel saving rate in the existing hybrid power transmission structure.

[0006] To achieve the above object, according to one aspect of the present invention, there is provided a hybrid power transmission device, including an engine and an electric motor, and further including: a first planetary gear set, the first planetary gear set including a first planetary carrier, first planetary gears, a first external gear ring, and a first sun gear, the first sun gear being connected to the electric motor, the first planetary carrier being connected to an output shaft, wherein the first sun gear and the first external gear ring are respectively connected to a braking assembly; a second planetary gear set, the second planetary gear set including a second planetary carrier, second planetary gears, a second external gear ring, and a second sun gear, the second sun gear being connected to the engine through a clutch assembly, the second planetary carrier being connected to the engine through a clutch assembly, the second external gear ring being connected to the output shaft; wherein, the first external gear ring and the second sun gear are rigidly connected, and the first planetary carrier and the second external gear ring are rigidly connected.

[0007] Further, the clutch assembly includes: a first clutch, a first end of the first clutch being connected to the engine, a second end of the first clutch being connected to the second sun gear; a second clutch, a first end of the second clutch being connected to the engine, a second end of the second clutch being connected to the second planetary carrier; wherein, the first clutch and the second clutch are arranged in parallel.

[0008] Further, the braking assembly includes: a first brake, the first brake being connected to the first external gear ring; a second brake, the second brake being connected to the first sun gear; wherein, the first brake and the second brake are independent of each other.

[0009] According to another aspect of the present invention, there is provided a control method for a hybrid transmission device, the hybrid transmission device being the above hybrid transmission device, and the control method includes: obtaining a first working state of the clutch assembly, where the first working state includes at least one of the following: the first clutch is engaged and the second clutch is disengaged, the second clutch is engaged and the first clutch is engaged, the first clutch and the second clutch are simultaneously disengaged, and the first clutch and the second clutch are simultaneously engaged; obtaining a second working state of the brake assembly, where the second working state includes at least one of the following: the first brake is opened and the second brake is disengaged, the second brake is opened and the first brake is disengaged, and the first brake and the second brake are simultaneously disengaged; based on the first working state and the second working state, starting at least one of the engine and the motor to achieve kinetic energy transfer.

[0010] Further, based on the first working state and the second working state, starting at least one of the engine and the motor to achieve kinetic energy transfer includes: when the first clutch is engaged, the second clutch is disengaged, and the second brake is opened, starting the engine, and the power of the engine is transmitted from the first outer gear ring to the first planet carrier, and the first planet carrier drives the output shaft to rotate, realizing the first gear transmission of the engine.

[0011] Further, based on the first working state and the second working state, starting at least one of the engine and the motor to achieve kinetic energy transfer includes: when the second clutch is engaged, the first clutch is disengaged, and the second brake is opened, starting the engine, and the power of the engine is transmitted from the second planet carrier, through the second sun gear and the first outer gear ring, to the first planet carrier, and the first planet carrier drives the output shaft to rotate, realizing the second gear transmission of the engine.

[0012] Further, based on the first working state and the second working state, starting at least one of the engine and the motor to achieve kinetic energy transfer includes: when the first clutch and the second clutch are simultaneously engaged and the first brake and the second brake are simultaneously disengaged, starting the engine, and a part of the power of the engine is transmitted from the second sun gear to the second planet gear, and another part of the power of the engine is transmitted from the second planet carrier to the second planet gear, and the second planet gear drives the second outer gear ring to operate to drive the output shaft to rotate, realizing the third gear transmission of the engine.

[0013] Further, based on the first working state and the second working state, starting at least one of the engine and the motor to achieve kinetic energy transfer includes: when the second clutch is engaged, the first clutch is disengaged, and the first brake is opened, starting the engine, and the power of the engine is transmitted from the second planet carrier to the second outer gear ring, and the second outer gear ring drives the output shaft to rotate, realizing the fourth gear transmission of the engine.

[0014] Further, based on the first operating state and the second operating state, at least one of the engine and the motor is turned on to achieve kinetic energy transfer, including: when the first clutch and the second clutch are both disengaged and the first brake is turned on, the motor is turned on, and the power of the motor is transmitted from the first sun gear to the first planet carrier, and the first planet carrier drives the output shaft to rotate, realizing pure electric gear transmission of the motor.

[0015] Further, based on the first operating state and the second operating state, at least one of the engine and the motor is turned on to achieve kinetic energy transfer, including: when the first clutch is engaged, the second clutch is disengaged, and the first brake and the second brake are both disengaged, the engine and the motor are turned on, the power of the engine is transmitted from the first outer gear ring to the first planet carrier, the power of the motor is transmitted from the first sun gear to the first planet carrier, and the first planet carrier drives the output shaft to rotate, realizing continuously variable transmission gear.

[0016] Further, based on the first operating state and the second operating state, at least one of the engine and the motor is turned on to achieve kinetic energy transfer, including: when the second clutch is engaged, the first clutch is disengaged, and the first brake and the second brake are both disengaged, the engine and the motor are turned on, and the power of the engine is transmitted to the motor after passing through the second planetary gear set and the first planetary gear set, realizing parking power generation.

[0017] According to another aspect of the present invention, there is provided a vehicle including a hybrid transmission device, and the hybrid transmission device is the above hybrid transmission device.

[0018] Applying the technical solution of the present invention, by rigidly connecting the first outer gear ring and the second sun gear, and rigidly connecting the first planet carrier and the second outer gear ring, the transmission relationship between the first planetary gear set and the second planetary gear set is established to achieve various transmission ratio transmission forms, wherein the first planetary gear set is connected to the motor, and the second planetary gear set is connected to the engine through a clutch assembly, and different power and different transmission ratios are output by selecting the power source. The structure of the above hybrid transmission device can achieve various hybrid modes and multi-gear power output to meet the actual working conditions or actual needs, which is beneficial to comprehensively reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0020] Figure 1 The structural schematic diagram of an embodiment of the hybrid transmission device according to the present invention is shown;

[0021] Figure 2Shows the flow chart of the control method of the hybrid drive in the present invention;

[0022] Figure 3 Shows the drive mode diagram of the hybrid drive in the present invention;

[0023] Figure 4 Shows the schematic diagram of the power transmission path of the engine in the first gear in the present invention;

[0024] Figure 5 Shows the schematic diagram of the power transmission path of the engine in the second gear in the present invention;

[0025] Figure 6 Shows the schematic diagram of the power transmission path of the engine in the third gear in the present invention;

[0026] Figure 7 Shows the schematic diagram of the power transmission path of the engine in the fourth gear in the present invention;

[0027] Figure 8 Shows the schematic diagram of the power transmission path of the pure electric drive in the present invention;

[0028] Figure 9 Shows the schematic diagram of the power transmission path of the continuously variable transmission gear in the present invention;

[0029] Figure 10 Shows the schematic diagram of the power transmission path of the parking power generation in the present invention.

[0030] Among them, the above-mentioned drawings include the following reference numerals:

[0031] 11. First planet carrier; 12. First planet gear; 13. First external gear ring; 14. First sun gear;

[0032] 21. Second planet carrier; 22. Second planet gear; 23. Second external gear ring; 24. Second sun gear;

[0033] 31. First clutch; 32. Second clutch;

[0034] 41. First brake; 42. Second brake;

[0035] 51. Output shaft; 52. Input shaft; 53. First intermediate shaft; 54. Second intermediate shaft;

[0036] 60. Engine;

[0037] 70. Motor. Detailed implementation manners

[0038] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0040] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0041] Now, exemplary embodiments according to the present application will be described in more detail with reference to the drawings. However, these exemplary embodiments can be implemented in many different forms and should not be construed as being limited only to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present application is thorough and complete, and the concept of these exemplary embodiments is fully conveyed to those of ordinary skill in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and thus their description will be omitted.

[0042] Embodiment 1

[0043] In combination with Figure 1 As shown, according to a specific embodiment of the present application, a hybrid drive device is provided.

[0044] Specifically, the hybrid transmission device includes: a first planetary gear set, a second planetary gear set, an engine 60, and a motor 70. The first planetary gear set includes a first planet carrier 11, a first planet gear 12, a first external gear ring 13, and a first sun gear 14. The first sun gear 14 is connected to the motor 70, and the first planet carrier 11 is connected to the output shaft 51. Among them, the first sun gear 14 and the first external gear ring 13 are respectively connected to the braking assembly. The second planetary gear set includes a second planet carrier 21, a second planet gear 22, a second external gear ring 23, and a second sun gear 24. The second sun gear 24 is connected to the engine 60 through a clutch assembly, the second planet carrier 21 is connected to the engine 60 through a clutch assembly, and the second external gear ring 23 is connected to the output shaft 51. Among them, the first external gear ring 13 and the second sun gear 24 are rigidly connected, and the first planet carrier 11 and the second external gear ring 23 are rigidly connected.

[0045] In the embodiment of the present application, by rigidly connecting the first external gear ring 13 and the second sun gear 24, and rigidly connecting the first planet carrier 11 and the second external gear ring 23, the transmission relationship between the first planetary gear set and the second planetary gear set is established to achieve various transmission ratio transmission forms. Among them, the first planetary gear set is connected to the motor 70, and the second planetary gear set is connected to the engine 60 through a clutch assembly. By selecting the power source, different powers and different transmission ratios can be output. The structure of the above hybrid transmission device can achieve multiple hybrid modes and multi-gear power output to meet the actual working conditions or actual needs, which is beneficial to comprehensively reducing energy consumption.

[0046] As Figure 1 shown, the clutch assembly includes: a first clutch 31 and a second clutch 32. Specifically, the first end of the first clutch 31 is connected to the engine 60, and the second end of the first clutch 31 is connected to the second sun gear 24. The first end of the second clutch 32 is connected to the engine 60, and the second end of the second clutch 32 is connected to the second planet carrier 21. Among them, the first clutch 31 and the second clutch 32 are arranged in parallel.

[0047] It should be noted that the purpose of setting the clutch assembly is to establish the transmission relationship between the engine 60 and the second planetary gear set. By connecting the engine 60 to different gears in the second planetary gear set, the power transmission ratio is changed to achieve the power output with different transmission ratios, that is, to achieve the multi-gear drive of the engine 60. Specifically, an input shaft 52 is provided at the output end of the engine 60, and the clutch assembly is connected to the engine 60 through the input shaft 52. After the first clutch 31 is engaged, that is, the input shaft 52 is connected to the second intermediate shaft 54 through the first clutch 31. Among them, the second intermediate shaft 54 is connected to the second sun gear 24, and the power of the engine 60 is directly transmitted to the second sun gear 24. At this time, the second sun gear 24 acts as a driving wheel for power transmission. After the second clutch 32 is engaged, that is, the input shaft 52 is connected to the first intermediate shaft 53 through the second clutch 32. Among them, the first intermediate shaft 53 is connected to the second planetary carrier 21, and the power of the engine 60 is directly transmitted to the second planetary carrier 21. At this time, the second planetary carrier 21 acts as a driving part for power transmission. After the first clutch 31 and the second clutch 32 are engaged simultaneously, the power of the engine 60 is split, and the power is transmitted from the second sun gear 24 and the second planetary carrier 21 respectively.

[0048] As Figure 1 shown, the brake assembly includes: a first brake 41 and a second brake 42. Specifically, the first brake 41 is connected to the first outer gear ring 13, and the second brake 42 is connected to the first sun gear 14, where the first brake 41 and the second brake 42 are independent of each other.

[0049] It should be noted that when the planetary gear set operates, one of its components needs to be locked, or the rotational speed of one of its components needs to be fixed. The purpose of setting the brake assembly is to lock one of the components in the planetary gear set to ensure the normal operation of the planetary gear set. Specifically, after the first brake 41 is opened, the first outer gear ring 13 is braked, that is, the rotational speed of the first outer gear ring 13 is 0. Since the first outer gear ring 13 and the second sun gear 24 are rigidly connected, the second sun gear 24 is braked to ensure the normal operation of the first planetary gear set and the second planetary gear set. After the second brake 42 is opened, the first sun gear 14 is braked, that is, the rotational speed of the first sun gear 14 is 0, to ensure the normal operation of the first planetary gear set.

[0050] Embodiment 2

[0051] Combined with Figures 2 to 10 shown, according to a specific embodiment of the present application, a control method for a hybrid power transmission device is provided. The hybrid power transmission device in this embodiment is the hybrid power transmission device in Embodiment 1.

[0052] Specifically, as Figure 2 shown, the control method for the hybrid power transmission device includes the following steps:

[0053] Step S1: Obtain the first working state of the clutch assembly, where the first working state includes at least one of the following: the first clutch 31 is engaged and the second clutch 32 is disengaged, the second clutch 32 is engaged and the first clutch 31 is engaged, the first clutch 31 and the second clutch 32 are simultaneously disengaged, and the first clutch 31 and the second clutch 32 are simultaneously engaged.

[0054] Step S2: Obtain the second working state of the brake assembly, where the second working state includes at least one of the following: the first brake 41 is open and the second brake 42 is disengaged, the second brake 42 is open and the first brake 41 is disengaged, and the first brake 41 and the second brake 42 are simultaneously disengaged.

[0055] Step S3: Based on the first working state and the second working state, turn on at least one of the engine 60 and the motor 70 to achieve kinetic energy transfer.

[0056] Through the above steps S1 to S3, the working states of the clutch assembly and the brake assembly are combined to change the driving and driven components in the first planetary gear set and the second planetary gear set, so as to achieve various combinations of transmission ratios, realize the power output of multiple gears, and at the same time turn on at least one of the engine 60 and the motor 70 to change the power source. The structure of the above hybrid transmission device can achieve various hybrid modes and the power output of multiple gears to meet the actual working conditions or actual needs, which is beneficial to comprehensively reduce energy consumption.

[0057] It should be noted that as Figure 3 shown, the control method of the above hybrid transmission device can achieve four-speed transmission (ENG1, ENG2, ENG3, and ENG4) of the engine 60, pure electric transmission (EV), continuously variable transmission (ECVT), and parking power generation mode. Among them, Figure 3 in, B1 represents the first brake 41, B2 represents the second brake 42, C1 represents the first clutch 31, and C2 represents the second clutch 32.

[0058] As Figure 4 shown, it is a schematic diagram of the power transmission path of the first-speed transmission (ENG1) of the engine 60. Among them, the thick solid line is the power transmission path, and the specific control method is as follows:

[0059] When the first clutch 31 is engaged, the second clutch 32 is disengaged, and the second brake 42 is open, turn on the engine 60. The power of the engine 60 is transmitted from the first external gear ring 13 to the first planetary carrier 11, and the first planetary carrier 11 drives the output shaft 51 to rotate, realizing the first-speed transmission of the engine 60.

[0060] It should be noted that when the second brake 42 is opened and the first sun gear 14 is braked, that is, the rotational speed of the first sun gear 14 is 0. The first clutch 31 is engaged. Since the first outer gear ring 13 is rigidly connected to the second sun gear 24, the power of the engine 60 is transmitted to the first outer gear ring 13 through the second sun gear 24. At this time, the first sun gear 14 is fixed, the first outer gear ring 13 is used as the driving member, and the first planet carrier 11 is used as the driven member to transmit the power to the output shaft 51. This transmission combination is a speed reduction transmission of the engine 60.

[0061] As Figure 5 shown, it is a schematic diagram of the power transmission path of the second gear transmission (ENG2) of the engine 60. Among them, the thick solid line is the power transmission path. The specific control method is as follows:

[0062] When the second clutch 32 is engaged, the first clutch 31 is disengaged, and the second brake 42 is opened, the engine 60 is started. The power of the engine 60 is transmitted from the second planet carrier 21 through the second sun gear 24 and the first outer gear ring 13 to the first planet carrier 11. The first planet carrier 11 drives the output shaft 51 to rotate, realizing the second gear transmission of the engine 60.

[0063] It should be noted that when the second brake 42 is opened and the first sun gear 14 is braked, that is, the rotational speed of the first sun gear 14 is 0. The second clutch 32 is engaged, and the power of the engine 60 is directly transmitted to the second planet carrier 21. Since the second sun gear 24 is rigidly connected to the first outer gear ring 13, the power is transmitted to the first outer gear ring 13 through the second sun gear 24, and the power is further transmitted to the first planet carrier 11 through the first outer gear ring 13. On the second planetary gear set, the second outer gear ring 23 is connected to the output shaft 51. Before the power transmission, it is considered that the second outer gear ring 23 is fixed. The second planet carrier 21 is used as the driving member, and the second sun gear 24 is used as the driven member for power output. This transmission combination is a speed increase transmission of the engine 60. On the first planetary gear set, the first sun gear 14 is fixed, the first outer gear ring 13 is used as the driving member, and the first planet carrier 11 is used as the driven member to transmit the power to the output shaft 51. This transmission combination is a speed reduction transmission of the engine 60. The above two transmission combinations are coupled, and finally the engine 60 performs a speed reduction transmission.

[0064] As Figure 6 shown, it is a schematic diagram of the power transmission path of the third gear transmission (ENG3) of the engine 60. Among them, the thick solid line is the power transmission path. The specific control method is as follows:

[0065] When the first clutch 31 and the second clutch 32 are simultaneously engaged and the first brake 41 and the second brake 42 are simultaneously disengaged, the engine 60 is started. Part of the power of the engine 60 is transmitted from the second sun gear 24 to the second planet gear 22, and another part of the power of the engine 60 is transmitted from the second planet carrier 21 to the second planet gear 22. The second planet gear 22 drives the second external gear ring 23 to rotate to drive the output shaft 51 to rotate, realizing the three-speed transmission of the engine 60.

[0066] It should be noted that when the first clutch 31 and the second clutch 32 are simultaneously engaged, the power of the engine 60 is split and transmitted. One part is transmitted to the second sun gear 24 through the first clutch 31, and the other part is transmitted to the second planet carrier 21 through the second clutch 32. At this time, the rotation directions and speeds of the second sun gear 24 and the second planet carrier 21 are the same. Therefore, the second planetary gear set transmits power as a whole, and the transmitted speed is the same as the output speed of the engine 60.

[0067] As Figure 7 shown, it is a schematic diagram of the power transmission path of the four-speed transmission (ENG4) of the engine 60. Among them, the thick solid line is the power transmission path. The specific control method is as follows:

[0068] When the second clutch 32 is engaged, the first clutch 31 is disengaged, and the first brake 41 is turned on, the engine 60 is started. The power of the engine 60 is transmitted from the second planet carrier 21 to the second external gear ring 23, and the second external gear ring 23 drives the output shaft 51 to rotate, realizing the four-speed transmission of the engine 60.

[0069] It should be noted that when the first brake 41 is turned on, since the first external gear ring 13 is rigidly connected to the second sun gear 24, the second sun gear 24 is braked. When the second clutch 32 is engaged, the power of the engine 60 is directly transmitted to the second planet carrier 21. At this time, the second sun gear 24 is fixed, the second planet carrier 21 is used as the driving part, and the second external gear ring 23 is used as the driven part for power output. This transmission combination is the speed-up transmission of the engine 60.

[0070] As Figure 8 shown, it is a schematic diagram of the power transmission path of the pure electric drive (EV) of the motor 70. Among them, the thick solid line is the power transmission path. The specific control method is as follows:

[0071] When the first clutch 31 and the second clutch 32 are simultaneously disengaged and the first brake 41 is turned on, the motor 70 is started. The power of the motor 70 is transmitted from the first sun gear 14 to the first planet carrier 11, and the first planet carrier 11 drives the output shaft 51 to rotate, realizing the pure electric gear transmission of the motor 70.

[0072] It should be noted that the first clutch 31 and the second clutch 32 are disengaged simultaneously, that is, the engine 60 cannot be power-connected to the planetary gear set. The first brake 41 is engaged, the first external gear ring 13 is braked, and the motor 70 directly transmits power to the first sun gear 14. At this time, the first external gear ring 13 is fixed, the first sun gear 14 is the driving part, and the first planet carrier 11 is the driven part to transmit power to the output shaft 51. This transmission combination is a speed-reducing transmission of the motor 70.

[0073] As Figure 9 shown, it is a schematic diagram of the power transmission path of the continuously variable transmission (ECVT) of the motor 70. Among them, the thick solid line is the power transmission path, and the specific control method is as follows:

[0074] When the first clutch 31 is engaged, the second clutch 32 is disengaged, and the first brake 41 and the second brake 42 are disengaged simultaneously, the engine 60 and the motor 70 are started. The power of the engine 60 is transmitted from the first external gear ring 13 to the first planet carrier 11, the power of the motor 70 is transmitted from the first sun gear 14 to the first planet carrier 11, and the first planet carrier 11 drives the output shaft 51 to rotate, realizing continuously variable transmission gear.

[0075] It should be noted that in the continuously variable transmission (ECVT) working condition, when changing the speed, it is necessary to keep the power of one of the engine 60 and the motor 70 constant, that is, to increase the speed of the motor 70 when the speed of the engine 60 remains unchanged and to increase the speed of the engine 60 when the speed of the motor 70 remains unchanged, and finally realize the coupling of the two powers. Specifically, the first clutch 31 is engaged, and the power of the engine 60 is directly transmitted to the first external gear ring 13 through the first clutch 31; after the motor 70 is started, the power of the motor 70 is directly transmitted to the first sun gear 14; the power of the engine 60 and the power of the motor 70 are coupled on the first planet gear 12.

[0076] As Figure 10 shown, it is a schematic diagram of the power transmission path of electric parking power generation. Among them, the thick solid line is the power transmission path, and the specific control method is as follows:

[0077] When the second clutch 32 is engaged, the first clutch 31 is disengaged, and the first brake 41 and the second brake 42 are disengaged simultaneously, the engine 60 and the motor 70 are started. The power of the engine 60 is transmitted to the motor 70 after passing through the second planetary gear set and the first planetary gear set, realizing parking power generation.

[0078] It should be noted that in the parking and parking state, the second external gear ring 23 and the first planet carrier 11 are both connected to the output shaft 51, so the rotational speeds of the second external gear ring 23 and the first planet carrier 11 are 0. The second clutch 32 is engaged, and the power of the engine 60 is transmitted to the second planet carrier 21 through the second clutch 32. The power of the engine 60 is transmitted to the first external gear ring 13 through the second sun gear 24. The second external gear ring 23 finally drives the first sun gear 14 to rotate, realizing the power generation of the motor 70.

[0079] Embodiment 3

[0080] According to another specific embodiment of the present application, a vehicle is provided, including a hybrid transmission device, and the hybrid transmission device is the hybrid transmission device in the above embodiment.

[0081] In the embodiment of the present application, by rigidly connecting the first external gear ring 13 and the second sun gear 24, and rigidly connecting the first planet carrier 11 and the second external gear ring 23, the transmission relationship between the first planetary gear set and the second planetary gear set is established to realize various transmission ratio transmission forms. Among them, the first planetary gear set is connected to the motor 70, and the second planetary gear set is connected to the engine 60 through a clutch assembly, and different power and different transmission ratios are output by selecting the power source. The structure of the above hybrid transmission device realizes the power output of multiple hybrid modes and multiple gears of the vehicle to meet the actual working conditions or actual needs, which is beneficial to comprehensively reducing energy consumption.

[0082] For the sake of description, spatial relative terms such as "above...", "above...", "on the upper surface of...", "above" can be used here to describe the spatial position relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure of the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "beneath other devices or structures" afterwards. Thus, the exemplary term "above..." can include both orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations are made for the spatial relative descriptions used here.

[0083] In addition to the above, it should also be noted that the "one embodiment", "another embodiment", "embodiment" and the like mentioned in this specification refer to the specific features, structures or characteristics described in connection with that embodiment being included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in connection with any one embodiment, it is intended that the implementation of such feature, structure or characteristic in combination with other embodiments also fall within the scope of the present invention.

[0084] In the above embodiments, the descriptions of each embodiment have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0085] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hybrid transmission device, comprising an engine (60) and an electric motor (70), characterized in that, Further included are: A first planetary gear set, which includes a first planet carrier (11), a first planet gear (12), a first external gear ring (13) and a first sun gear (14). The first sun gear (14) is connected to the motor (70), and the first planet carrier (11) is connected to the output shaft (51). Among them, the first sun gear (14) and the first external gear ring (13) are respectively connected to a braking assembly; A second planetary gear set, which includes a second planet carrier (21), a second planet gear (22), a second external gear ring (23) and a second sun gear (24). The second sun gear (24) is connected to the engine (60) through a clutch assembly, the second planet carrier (21) is connected to the engine (60) through the clutch assembly, and the second external gear ring (23) is connected to the output shaft (51); Among them, the first external gear ring (13) and the second sun gear (24) are rigidly connected, and the first planet carrier (11) and the second external gear ring (23) are rigidly connected; The clutch assembly includes: A first clutch (31), the first end of the first clutch (31) is connected to the engine (60), and the second end of the first clutch (31) is connected to the second sun gear (24); A second clutch (32), the first end of the second clutch (32) is connected to the engine (60), and the second end of the second clutch (32) is connected to the second planet carrier (21); Among them, the first clutch (31) and the second clutch (32) are arranged in parallel; The braking assembly includes: A first brake (41), the first brake (41) is connected to the first external gear ring (13); A second brake (42), the second brake (42) is connected to the first sun gear (14); Among them, the first brake (41) and the second brake (42) are independent of each other.

2. A control method for a hybrid drive device, characterized in that, The hybrid power transmission device is the hybrid power transmission device according to claim 1, and the control method includes: Obtaining a first working state of the clutch assembly, where the first working state includes at least one of the following: the first clutch (31) is engaged and the second clutch (32) is disengaged, the second clutch (32) is engaged and the first clutch (31) is engaged, the first clutch (31) and the second clutch (32) are simultaneously disengaged, the first clutch (31) and the second clutch (32) are simultaneously engaged; Obtaining a second working state of the braking assembly, where the second working state includes at least one of the following: the first brake (41) is opened and the second brake (42) is disengaged, the second brake (42) is opened and the first brake (41) is disengaged, the first brake (41) and the second brake (42) are simultaneously disengaged; Based on the first working state and the second working state, starting at least one of the engine (60) and the motor (70) to achieve kinetic energy transmission.

3. The control method according to claim 2, wherein Based on the first operating state and the second operating state, at least one of the engine (60) and the motor (70) is turned on to achieve kinetic energy transfer, including: When the first clutch (31) is engaged, the second clutch (32) is disengaged, and the second brake (42) is turned on, the engine (60) is turned on. The power of the engine (60) is transmitted from the first ring gear (13) to the first planet carrier (11), and the first planet carrier (11) drives the output shaft (51) to rotate, achieving the first gear transmission of the engine (60).

4. The control method according to claim 2, wherein Based on the first operating state and the second operating state, at least one of the engine (60) and the motor (70) is turned on to achieve kinetic energy transfer, including: When the second clutch (32) is engaged, the first clutch (31) is disengaged, and the second brake (42) is turned on, the engine (60) is turned on. The power of the engine (60) is transmitted from the second planet carrier (21), through the second sun gear (24) and the first ring gear (13), to the first planet carrier (11), and the first planet carrier (11) drives the output shaft (51) to rotate, achieving the second gear transmission of the engine (60).

5. The control method according to claim 2, characterized in that, Based on the first operating state and the second operating state, at least one of the engine (60) and the motor (70) is turned on to achieve kinetic energy transfer, including: When the first clutch (31) and the second clutch (32) are engaged simultaneously and the first brake (41) and the second brake (42) are disengaged simultaneously, the engine (60) is turned on. A part of the power of the engine (60) is transmitted from the second sun gear (24) to the second planet gear (22), and another part of the power of the engine (60) is transmitted from the second planet carrier (21) to the second planet gear (22). The second planet gear (22) drives the second ring gear (23) to operate to drive the output shaft (51) to rotate, achieving the third gear transmission of the engine (60).

6. The control method according to claim 2, characterized in that, Based on the first operating state and the second operating state, at least one of the engine (60) and the motor (70) is turned on to achieve kinetic energy transfer, including: When the second clutch (32) is engaged, the first clutch (31) is disengaged, and the first brake (41) is turned on, the engine (60) is turned on. The power of the engine (60) is transmitted from the second planet carrier (21) to the second ring gear (23), and the second ring gear (23) drives the output shaft (51) to rotate, achieving the fourth gear transmission of the engine (60).

7. The control method according to claim 2, characterized in that Based on the first operating state and the second operating state, at least one of the engine (60) and the motor (70) is turned on to achieve kinetic energy transfer, including: When the first clutch (31) and the second clutch (32) are disengaged simultaneously and the first brake (41) is engaged, the motor (70) is started. The power of the motor (70) is transmitted from the first sun gear (14) to the first planet carrier (11), and the first planet carrier (11) drives the output shaft (51) to rotate, realizing the pure electric gear transmission of the motor (70).

8. The control method according to claim 2, wherein Based on the first working state and the second working state, at least one of the engine (60) and the motor (70) is started to realize kinetic energy transmission, including: When the first clutch (31) is engaged, the second clutch (32) is disengaged, and the first brake (41) and the second brake (42) are disengaged simultaneously, the engine (60) and the motor (70) are started. The power of the engine (60) is transmitted from the first ring gear (13) to the first planet carrier (11), and the power of the motor (70) is transmitted from the first sun gear (14) to the first planet carrier (11). The first planet carrier (11) drives the output shaft (51) to rotate, realizing continuously variable transmission gear transmission.

9. The control method according to claim 2, wherein Based on the first working state and the second working state, at least one of the engine (60) and the motor (70) is started to realize kinetic energy transmission, including: When the second clutch (32) is engaged, the first clutch (31) is disengaged, and the first brake (41) and the second brake (42) are disengaged simultaneously, the engine (60) and the motor (70) are started. The power of the engine (60) is transmitted to the motor (70) after passing through the second planetary gear set and the first planetary gear set, realizing parking power generation.

10. A vehicle, comprising a hybrid drive, characterized in that, The hybrid power transmission device is the hybrid power transmission device according to claim 1.

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