Hybrid powertrain, vehicle and control method

Abstract

This invention provides a hybrid powertrain, vehicle, and control method. The device includes an engine, a first motor, and a second motor, and further includes: a first planetary gear set, comprising a first planetary carrier, a plurality of first planetary gears, a plurality of second planetary gears, a first ring gear, a first sun gear, and a second sun gear. The plurality of first planetary gears and the plurality of second planetary gears are coaxially arranged, and the plurality of first planetary gears are disposed within the first ring gear. The first sun gear is connected to the second motor, and the first planetary carrier is connected to an output shaft. The second planetary gear set includes a second planetary carrier, a plurality of third planetary gears, a second ring gear, and a third sun gear. The second planetary carrier is connected to the plurality of third planetary gears, and the plurality of third planetary gears are disposed within the second ring gear. The second planetary carrier is connected to the engine via an input shaft, and the third sun gear is connected to the first motor. The first sun gear and the second sun gear are selectively connected to at least one of the first motor and the engine via a clutch assembly.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically, to a hybrid power transmission device, a vehicle, and a control method. Background Technology

[0002] With the increasing awareness of energy conservation and emission reduction, conventional vehicles are limited by their structure and cannot meet people's needs. Hybrid vehicles, as a new type of vehicle power, are in a stage of vigorous development in terms of technology and market, and the drive system of hybrid vehicles occupies an extremely important position.

[0003] Current hybrid transmissions are limited by their structure, resulting in a simple design. Vehicle speed and load capacity regulation rely entirely on the electric motor, placing high demands on its performance and making cost control difficult. Furthermore, the limited hybrid modes and gear ratios lead to low overall fuel efficiency and high overall costs. The lack of energy recovery mechanisms also hinders energy reuse.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] The main objective of this invention is to provide a hybrid power transmission device, vehicle, and control method to solve the problems of single hybrid mode, single gear, and low overall fuel saving rate in the prior art.

[0006] To achieve the above objectives, according to one aspect of the present invention, a hybrid power transmission device is provided. The hybrid power transmission device includes an engine, a first motor, and a second motor, and further includes: a first planetary gear set, the first planetary gear set including a first planet carrier, a plurality of first planet gears, a plurality of second planet gears, a first ring gear, and a first sun gear and a second sun gear; the plurality of first planet gears and the plurality of second planet gears are coaxially arranged; the first planet carrier is connected to the plurality of first planet gears and the plurality of second planet gears; a first sun gear is disposed between the plurality of first planet gears; a second sun gear is disposed between the plurality of second planet gears; the plurality of first planet gears are disposed within the first ring gear; the first sun gear is connected to the second motor; and the first planet carrier is connected to an output shaft; a first braking assembly, the first braking assembly being disposed adjacent to the first ring gear, the first braking assembly having a first braking position engaging with the first ring gear, and the first braking assembly having a first braking position engaging with the first ring gear. The system includes: a first release position where the ring gear disengages; a second braking assembly, disposed adjacent to the first sun gear, having a second braking position engaged with the first sun gear and a second release position disengaged from the first sun gear; a second planetary gear set, comprising a second planetary carrier, a plurality of third planet gears, a second ring gear, and a third sun gear, the second planetary carrier being connected to the plurality of third planet gears, a third sun gear being disposed between the plurality of third planet gears, the plurality of third planet gears being disposed within the second ring gear, the second planetary carrier being connected to the engine via an input shaft, the third sun gear being connected to the first motor, and the second ring gear being fixedly connected to a mounting base; wherein the first sun gear and the second sun gear are selectively connected to at least one of the first motor and the engine via a clutch assembly.

[0007] Furthermore, the clutch assembly includes: a first clutch, a first end of which is connected to a second motor, a second braking assembly, and a first sun gear, the first clutch having a first engaged state and a first disengaged state; and a second clutch, through which the engine and the first motor are selectively connected to at least one of a second end of the first clutch and a second sun gear, the second clutch having a second engaged state and a second disengaged state.

[0008] Furthermore, the first end of the second clutch is connected to the second end of the first clutch, the second end of the second clutch is connected to the second sun gear via an intermediate shaft, and the third end of the second clutch is connected to the engine via an input shaft.

[0009] Furthermore, the first braking assembly and the second braking assembly are controlled independently.

[0010] According to another aspect of the present invention, a vehicle is provided, including a hybrid powertrain, wherein the hybrid powertrain is the hybrid powertrain described above.

[0011] According to another aspect of the present invention, a vehicle control method is provided. The control method is used to control the vehicle described above. The method includes the following steps: acquiring vehicle operating condition information, wherein the operating condition information includes at least one of the following: first operating condition information of a first sun gear and a second sun gear connected to an engine; second operating condition information of a first sun gear and a second sun gear connected to a first electric motor; and third operating condition information of a first planetary carrier connected to an engine, a first electric motor, and a second electric motor; acquiring first operating state information of a first braking assembly and a second braking assembly, wherein the first operating state information includes at least one of the following: information of the first braking assembly being in a first braking position and a first release position, and information of the second braking assembly being in a second braking position or a second release position; acquiring second operating state information of a first clutch and a second clutch, wherein the second operating state information includes at least: information of the first clutch being in a first engagement state and a first disengagement state, and information of the second clutch being in a second engagement state and a second disengagement state; and generating a control strategy set based on the operating condition information, the first operating state information, and the second operating state information, wherein the control strategy set is used to control the opening and closing of at least one of the engine, the first electric motor, and the second electric motor.

[0012] Furthermore, based on the operating condition information, the first operating state information, and the second operating state information, a control strategy set is generated, including: when it is determined that the first braking component is in the first braking position, the second braking component is in the second release position, the first clutch is in the first disengaged state, the second clutch is in the second disengaged state, and the first sun gear is connected to the second motor, a first target control strategy is generated in the control strategy set, wherein the first target control strategy is used to control the second motor to start so that the vehicle is in pure electric drive mode.

[0013] Furthermore, based on the operating condition information, the first operating state information, and the second operating state information, a control strategy set is generated, including: when it is determined that the first braking component is in the first braking position, the second braking component is in the second release position, the first clutch is in the first disengaged state, the second clutch is in the second disengaged state, and the first sun gear is connected to the second motor, the third sun gear is connected to the first motor, and the second planetary carrier is connected to the engine, a second target control strategy is generated in the control strategy set, wherein the second target control strategy is used to control the second motor and the engine to start, so that the first motor generates electricity and the vehicle is in a series operation mode; when it is determined that the first braking component is in the first braking position, the second braking component is in the second release position, the first clutch is in the first engaged state, the second clutch is in the second disengaged state, and the first sun gear is connected to the second motor and the engine, a fourth target control strategy is generated in the control strategy set, wherein the fourth target control strategy is used to control the second motor and the engine to start, so that the vehicle is in a parallel operation mode.

[0014] Furthermore, based on the operating condition information, the first operating state information, and the second operating state information, a control strategy set is generated, including: when it is determined that the first braking component is in the first braking position, the second braking component is in the second release position, the first clutch is in the first engaged state, the second clutch is in the second disengaged state, and the first sun gear is connected to the engine, a third target control strategy is generated in the control strategy set, wherein the third target control strategy is used to control the engine to start so that the vehicle is in direct drive first gear mode; when it is determined that the vehicle is in direct drive first gear mode, and the third sun gear is connected to the first motor, and the second planetary carrier is connected to the engine, a fifth target control strategy is generated in the control strategy set, wherein the fifth target control strategy is used to control the engine to start so that the first motor generates electricity, and the vehicle is in direct drive first gear power generation mode.

[0015] Furthermore, based on the operating condition information, the first operating state information, and the second operating state information, a control strategy set is generated, including: when it is determined that the first braking component is in the first braking position, the second braking component is in the second release position, the first clutch is in the first disengaged state, the second clutch is in the second engaged state, and the second sun gear is connected to the engine, a sixth target control strategy is generated in the control strategy set, wherein the sixth target control strategy is used to control the engine to start so that the vehicle is in direct drive second gear mode; when it is determined that the vehicle is in direct drive second gear mode, and the third sun gear is connected to the first motor, and the second planetary carrier is connected to the engine, a seventh target control strategy is generated in the control strategy set, wherein the seventh target control strategy is used to control the engine to start so that the first motor generates electricity and the vehicle is in direct drive second gear power generation mode.

[0016] Furthermore, based on the operating condition information, the first operating state information, and the second operating state information, a control strategy set is generated, including: when it is determined that the first braking component is in the first braking position, the second braking component is in the second release position, the first clutch is in the first engagement state, the second clutch is in the second engagement state, and the first sun gear and the second sun gear are connected to the engine, an eighth target control strategy is generated in the control strategy set, wherein the eighth target control strategy is used to control the engine to start so that the vehicle is in direct drive third gear mode; when it is determined that the vehicle is in direct drive third gear mode, and the third sun gear is connected to the first motor, and the second planetary carrier is connected to the engine, a ninth target control strategy is generated in the control strategy set, wherein the ninth target control strategy is used to control the engine to start so that the first motor generates electricity and the vehicle is in direct drive third gear power generation mode.

[0017] Furthermore, based on the operating condition information, the first operating state information, and the second operating state information, a control strategy set is generated, including: when it is determined that the first braking component is in the first release position, the second braking component is in the second braking position, the first clutch is in the first disengaged state, the second clutch is in the second engaged state, and the second sun gear is connected to the engine and the first sun gear is connected to the second braking component, a tenth target control strategy is generated in the control strategy set, wherein the tenth target control strategy is used to control the engine to start so that the vehicle is in direct drive fourth gear mode; when it is determined that the vehicle is in direct drive fourth gear mode, and the third sun gear is connected to the first motor and the second planetary carrier is connected to the engine, an eleventh target control strategy is generated in the control strategy set, wherein the eleventh target control strategy is used to control the engine to start so that the first motor generates electricity and the vehicle is in direct drive fourth gear power generation mode.

[0018] Furthermore, based on the operating condition information, the first operating state information, and the second operating state information, a control strategy set is generated, including: when it is determined that the first braking component is in the first braking position, the second braking component is in the second release position, the first clutch is in the first disengaged state, the second clutch is in the second disengaged state, and the first sun gear is connected to the second motor, a twelfth target control strategy is generated in the control strategy set, wherein the twelfth target control strategy is used to control the engine to shut down so that the vehicle is in kinetic energy recovery mode.

[0019] Furthermore, based on the operating condition information, the first operating state information, and the second operating state information, a control strategy set is generated, including: when it is determined that the first braking component is in the first release position, the second braking component is in the second release position, the first clutch is in the first disengaged state, the second clutch is in the second disengaged state, and the third sun gear is connected to the first motor and the second planetary carrier is connected to the engine, a thirteenth target control strategy is generated in the control strategy set, wherein the thirteenth target control strategy is used to control the engine to start so that the vehicle is in the parking power generation mode.

[0020] By employing the technical solution of this invention, two planetary gear sets and two braking assemblies are used. The two planetary gear sets include a first planetary gear set and a second planetary gear set. The first planetary gear set is configured with a first planetary gear set, a second planetary gear set, a first sun gear set, a second sun gear set, and a first planet carrier set. The first and second planetary gear sets are double-linked planetary gear sets. This configuration optimizes space and configuration utilization. The engine, the first motor, and the second motor participate in driving and generating electricity, maximizing the number of gears in the configuration. The first braking assembly engages or disengages with the first ring gear, and the second braking assembly engages or disengages with the first sun gear. The first and second sun gears can be selectively connected to at least one of the first motor and the engine via a clutch assembly, adding an overdrive function to achieve overspeed operation. This structure realizes multi-gear power transmission and multi-power drive modes to meet actual working conditions or needs, and is beneficial for overall energy consumption reduction. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0022] Figure 1 A schematic diagram of the hybrid powertrain according to the present invention is shown;

[0023] Figure 2 A schematic diagram of power transmission in pure electric drive according to the present invention is shown;

[0024] Figure 3 A schematic diagram of power transmission in series drive according to the present invention is shown;

[0025] Figure 4 A schematic diagram of power transmission in parallel drive according to the present invention is shown;

[0026] Figure 5 A schematic diagram of the power transmission of the engine in direct drive first gear according to the present invention is shown;

[0027] Figure 6 A schematic diagram of power transmission in the direct-drive first-gear generator according to the present invention is shown;

[0028] Figure 7 A schematic diagram of the power transmission of the engine in direct drive second gear according to the present invention is shown;

[0029] Figure 8 A schematic diagram of power transmission for direct-drive second-gear generator according to the present invention is shown;

[0030] Figure 9 A schematic diagram of the power transmission of the engine in three direct-drive gears according to the present invention is shown;

[0031] Figure 10 A schematic diagram of power transmission for direct-drive three-speed generator generation according to the present invention is shown;

[0032] Figure 11 A schematic diagram of the power transmission of the engine in direct drive four gears according to the present invention is shown;

[0033] Figure 12 A schematic diagram of power transmission for direct-drive four-speed generator generation according to the present invention is shown;

[0034] Figure 13 A schematic diagram of power transmission for kinetic energy recovery according to the present invention is shown;

[0035] Figure 14 A schematic diagram of the power transmission for parking generators according to the present invention is shown.

[0036] The above figures include the following reference numerals:

[0037] 1. Input shaft; 3. Third sun gear; 4. Third planet gear; 5. Second planet carrier; 6. Second ring gear; 7. Second clutch; 8. First clutch;

[0038] 10. First sun gear; 11. Second sun gear; 121. First planet gear; 122. Second planet gear; 13. First ring gear; 14. First planet carrier; 15. Second brake assembly; 16. First brake assembly; 17. Output shaft; 18. Intermediate shaft;

[0039] 60. Engine; 61. First motor; 62. Second motor. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application 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 used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled 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 therefore their description will be omitted.

[0044] Combination Figures 1 to 14 As shown, according to a specific embodiment of the present invention, a hybrid power transmission device is provided.

[0045] Specifically, such as Figure 1As shown, the hybrid power transmission includes an engine 60, a first motor 61, and a second motor 62. It also includes: a first planetary gear set, comprising a first planetary carrier 14, a plurality of first planetary gears 121, a plurality of second planetary gears 122, a first ring gear 13, a first sun gear 10, and a second sun gear 11. The plurality of first planetary gears 121 and the plurality of second planetary gears 122 are coaxially arranged. The first planetary carrier 14 is connected to the plurality of first planetary gears 121 and the plurality of second planetary gears 122. A first sun gear 10 is disposed between the plurality of first planetary gears 121, and a second sun gear 11 is disposed between the plurality of second planetary gears 122. The plurality of first planetary gears 121 are disposed within the first ring gear 13. The first sun gear 10 is connected to the second motor 62, and the first planetary carrier 14 is connected to the output shaft 17; and a first braking assembly 16, which is disposed adjacent to the first ring gear 13 and has a first braking position that engages with the first ring gear 13. The system includes a first braking assembly 16 having a first release position disengaged from the first ring gear 13; a second braking assembly 15, disposed adjacent to the first sun gear 10, having a second braking position engaged with the first sun gear 10, and a second release position disengaged from the first sun gear 10; a second planetary gear set including a second planetary carrier 5, a plurality of third planetary gears 4, a second ring gear 6, and a third sun gear 3, the second planetary carrier 5 being connected to the plurality of third planetary gears 4, a third sun gear 3 being disposed between the plurality of third planetary gears 4, the plurality of third planetary gears 4 being disposed within the second ring gear 6, the second planetary carrier 5 being connected to the engine 60 via an input shaft 1, the third sun gear 3 being connected to the first motor 61, and the second ring gear 6 being fixedly connected to a mounting base; wherein the first sun gear 10 and the second sun gear 11 are selectively connected to at least one of the first motor 61 and the engine 60 via a clutch assembly.

[0046] In this embodiment, two planetary gear sets and two braking assemblies are employed. The two planetary gear sets include a first planetary gear set 1 and a second planetary gear set. The first planetary gear set is configured with a first planetary gear 121 and a second planetary gear 122, a first sun gear 10, a second sun gear 11, and a first planet carrier 14. The first planetary gear 121 and the second planetary gear 122 are double planetary gears. This configuration optimizes space and configuration utilization. The engine 60, the first motor 61, and the second motor 62 participate in driving and generating electricity, maximizing the number of gears in the configuration. The first braking assembly 16 engages or disengages with the first ring gear 13, and the second braking assembly 15 engages or disengages with the first sun gear 10. The first sun gear 10 and the second sun gear 11 can be selectively connected to at least one of the first motor 61 and the engine 60 via a clutch assembly, adding an overdrive function to achieve overspeed operation. The above structure realizes multi-gear power transmission and multi-power drive modes to meet actual working conditions or actual needs, and is conducive to comprehensively reducing energy consumption.

[0047] Furthermore, the clutch assembly includes: a first clutch 8, the first end of which is connected to the second motor 62, the second braking assembly 15, and the first sun gear 10; the first clutch 8 has a first engaged state and a first disengaged state; and a second clutch 7, through which the engine 60 and the first motor 61 are selectively connected to at least one of the second end of the first clutch 8 and the second sun gear 11; the second clutch 7 has a second engaged state and a second disengaged state. In this embodiment, different power transmission paths are achieved through different combinations of the clutch assembly with the first braking assembly 16 and the second braking assembly 15, enabling power transmission in multiple gears, resulting in smooth gear shifting, relatively small speed differences, and improved reliability of the hybrid power transmission device.

[0048] Furthermore, the first end of the second clutch 7 is connected to the second end of the first clutch 8, the second end of the second clutch 7 is connected to the second sun gear 11 via the intermediate shaft 18, and the third end of the second clutch 7 is connected to the engine 60 via the input shaft 1. By setting the specific connection methods of the first clutch 8, the second clutch 7, the first planetary gear set, the second planetary gear set, the engine 60, the first motor 61, and the second motor 62, power transmission and output at different gears can be realized.

[0049] Furthermore, the first braking assembly 16 and the second braking assembly 15 are controlled independently. This arrangement allows the first braking assembly 16 and the second braking assembly 15 to be combined with the clutch assembly respectively, determining different power transmission methods and solving the problem of the current hybrid transmission having only one gear.

[0050] According to another aspect of the present invention, a vehicle is provided, including a hybrid powertrain, wherein the hybrid powertrain is the aforementioned hybrid powertrain. The hybrid powertrain includes an engine 60, a first motor 61, and a second motor 62, and further includes: a first planetary gear set, the first planetary gear set including a first planet carrier 14, a plurality of first planet gears 121, a plurality of second planet gears 122, a first ring gear 13, a first sun gear 10, and a second sun gear 11; the plurality of first planet gears 121 and the plurality of second planet gears 122 are coaxially arranged; the first planet carrier 14 is connected to the plurality of first planet gears 121 and the plurality of second planet gears 122; a first sun gear 10 is disposed between the plurality of first planet gears 121; a second sun gear 11 is disposed between the plurality of second planet gears 122; the plurality of first planet gears 121 are disposed within the first ring gear 13; the first sun gear 10 is connected to the second motor 62; and the first planet carrier 14 is connected to an output shaft 17; a first braking assembly 16, the first braking assembly 16 being disposed adjacent to the first ring gear 13; the first braking assembly 16 having a first braking position engaging with the first ring gear 13; and The first braking assembly 16 has a first release position disengaged from the first ring gear 13; the second braking assembly 15 is disposed adjacent to the first sun gear 10, the second braking assembly 15 has a second braking position engaged with the first sun gear 10, and the second braking assembly 15 has a second release position disengaged from the first sun gear 10; the second planetary gear set includes a second planetary carrier 5, a plurality of third planetary gears 4, a second ring gear 6, and a third sun gear 3, the second planetary carrier 5 is connected to the plurality of third planetary gears 4, the third sun gear 3 is disposed between the plurality of third planetary gears 4, the plurality of third planetary gears 4 are disposed within the second ring gear 6, the second planetary carrier 5 is connected to the engine 60 via an input shaft 1, the third sun gear 3 is connected to the first motor 61, and the second ring gear 6 is fixedly connected to the mounting base; wherein, the first sun gear 10 and the second sun gear 11 are selectively connected to at least one of the first motor 61 and the engine 60 via a clutch assembly.

[0051] In this embodiment, two planetary gear sets and two braking assemblies are employed. The two planetary gear sets include a first planetary gear set 1 and a second planetary gear set. The first planetary gear set is configured with a first planetary gear 121 and a second planetary gear 122, a first sun gear 10, a second sun gear 11, and a first planet carrier 14. The first planetary gear 121 and the second planetary gear 122 are double planetary gears. This configuration optimizes space and configuration utilization. The engine 60, the first motor 61, and the second motor 62 participate in driving and generating electricity, maximizing the number of gears in the configuration. The first braking assembly 16 engages or disengages with the first ring gear 13, and the second braking assembly 15 engages or disengages with the first sun gear 10. The first sun gear 10 and the second sun gear 11 can be selectively connected to at least one of the first motor 61 and the engine 60 via a clutch assembly, adding an overdrive function to achieve overspeed operation. The above structure realizes multi-gear power transmission and multi-power drive modes to meet actual working conditions or actual needs, and is conducive to comprehensively reducing energy consumption.

[0052] According to another aspect of the present invention, a vehicle control method is provided, the control method being used to control the aforementioned vehicle, the method comprising the following steps:

[0053] Step S1: Obtain the vehicle's operating condition information, wherein the operating condition information includes at least one of the following: first operating condition information where the first sun gear 10 and the second sun gear 11 are connected to the engine 60; second operating condition information where the first sun gear 10 and the second sun gear 11 are connected to the first motor 61; and third operating condition information where the first planetary carrier 14 is connected to the engine 60, the first motor 61, and the second motor 62.

[0054] Step S2: Obtain first operating status information of the first braking component 16 and the second braking component 15, wherein the first operating status information includes at least one of the following: information on the first braking component 16 being in a first braking position and a first release position, and information on the second braking component 15 being in a second braking position or a second release position.

[0055] Step S3: Obtain the second working state information of the first clutch 8 and the second clutch 7, wherein the second working state information includes at least: information on the first clutch 8 being in a first engaged state and a first disengaged state, and information on the second clutch 7 being in a second engaged state and a second disengaged state.

[0056] Step S4: Based on the operating condition information, the first operating state information and the second operating state information, generate a control strategy set. The control strategy set is used to control the opening and closing of at least one of the engine 60, the first motor 61 and the second motor 62.

[0057] Steps S1 to S4 above select the power source by using the working condition information and the second working state information, and lock the speed of the planetary gear set by using the first working state information to enable the output shaft 17 to output normally, so as to realize multiple power mode transmission and multi-gear transmission to meet the actual working conditions or actual needs, and help to reduce energy consumption in an all-round way.

[0058] Combination Figures 2 to 14 The diagram shows the power transmission path of the vehicle in various modes according to the present invention. The black portion represents the power transmission path. Further, based on operating condition information, first operating state information, and second operating state information, a control strategy set is generated, including:

[0059] like Figure 2 As shown, when the first braking assembly 16 is in the first braking position, the second braking assembly 15 is in the second release position, the first clutch 8 is in the first disengaged state, the second clutch 7 is in the second disengaged state, and the first sun gear 10 is connected to the second motor 62, a first target control strategy is generated in the control strategy set. The first target control strategy is used to control the second motor 62 to turn on so that the vehicle is in pure electric drive mode.

[0060] Specifically, the second motor 62 transmits power to the first sun gear 10, which is connected to the first planetary gear 121. The first ring gear 13 is braked by the first braking assembly 16, and the power is transmitted from the first planetary carrier 14 to the output shaft 17.

[0061] like Figure 3 As shown, based on operating condition information, first operating state information, and second operating state information, a control strategy set is generated, including: when it is determined that the first braking component 16 is in the first braking position, the second braking component 15 is in the second release position, the first clutch 8 is in the first disengaged state, the second clutch 7 is in the second disengaged state, and the first sun gear 10 is connected to the second motor 62, the third sun gear 3 is connected to the first motor 61, and the second planetary carrier 5 is connected to the engine 60, a second target control strategy is generated in the control strategy set. The second target control strategy is used to control the second motor 62 and the engine 60 to start, so that the first motor 61 generates electricity and the vehicle is in series operation mode.

[0062] Specifically, engine 60 transmits power to the second planetary carrier 5 via input shaft 1. Since the second ring gear 6 is fixed, the power is transmitted to the third sun gear 3 via the third planetary gear 4, and then input to the first motor 61 via the third sun gear 3, thus realizing the power generation function. The second motor 62 transmits power to the first sun gear 10, which is connected to the first planetary gear 121. The first ring gear 13 is braked by the first braking assembly 16, and the power is transmitted to the output shaft 17 via the first planetary carrier 14.

[0063] like Figure 4 As shown, when the first braking assembly 16 is in the first braking position, the second braking assembly 15 is in the second release position, the first clutch 8 is in the first engaged state, the second clutch 7 is in the second disengaged state, and the first sun gear 10 is connected to the second motor 62 and the engine 60, a fourth target control strategy is generated in the control strategy set. The fourth target control strategy is used to control the second motor 62 and the engine 60 to start so that the vehicle is in parallel operation mode.

[0064] Specifically, the engine 60 transmits power to the first sun gear 10 via the input shaft 1 and the first clutch 8. At this time, the first ring gear 13 is braked by the first braking assembly 16. The power is transmitted to the output shaft 17 via the first planetary gear 121 and the first planetary carrier 14, thus achieving direct drive in first gear. At this time, the second motor 62 works and outputs power, thus achieving parallel mode.

[0065] like Figure 5 As shown, based on operating condition information, first operating state information, and second operating state information, a control strategy set is generated, including: when it is determined that the first braking component 16 is in the first braking position, the second braking component 15 is in the second release position, the first clutch 8 is in the first engaged state, the second clutch 7 is in the second disengaged state, and the first sun gear 10 is connected to the engine 60, a third target control strategy is generated in the control strategy set, wherein the third target control strategy is used to control the engine 60 to start so that the vehicle is in direct drive first gear mode.

[0066] Specifically, the engine 60 transmits power through the input shaft 1 to the first sun gear 10 via the first clutch 8. At this time, the first ring gear 13 is braked by the first braking assembly 16, and the power is transmitted through the first planetary gear 121 to the output shaft 17 via the first planetary carrier 14, thus achieving direct drive first gear.

[0067] like Figure 6 As shown, when it is determined that the vehicle is in direct drive first gear mode, and the third sun gear 3 is connected to the first motor 61 and the second planetary carrier 5 is connected to the engine 60, a fifth target control strategy in the control strategy set is generated. The fifth target control strategy is used to control the engine 60 to start so that the first motor 61 generates electricity and the vehicle is in direct drive first gear power generation mode.

[0068] Specifically, engine 60 transmits power to the first sun gear 10 via input shaft 1 and first clutch 8. At this time, the first ring gear 13 is braked by the first braking assembly 16. Power is transmitted to output shaft 17 via first planetary gears 121 and first planetary carrier 14, thus achieving direct drive in first gear. Engine 60 transmits power to the second planetary carrier 5 via input shaft 1. Since the second ring gear 6 is fixed, power is transmitted to the third sun gear 3 via third planetary gears 4, and then input to the first motor 61, thus achieving power generation. The first motor 61 operates at this time, realizing direct drive in first gear power generation.

[0069] like Figure 7 As shown, based on operating condition information, first operating state information, and second operating state information, a control strategy set is generated, including: when it is determined that the first braking component 16 is in the first braking position, the second braking component 15 is in the second release position, the first clutch 8 is in the first disengaged state, the second clutch 7 is in the second engaged state, and the second sun gear 11 is connected to the engine 60, a sixth target control strategy in the control strategy set is generated, wherein the sixth target control strategy is used to control the engine 60 to start so that the vehicle is in direct drive second gear mode.

[0070] Specifically, the engine 60 transmits power to the second sun gear 11 via the input shaft 1 and the second clutch 7. At this time, the first ring gear 13 is braked by the first braking assembly 16, and the power is transmitted to the output shaft 17 via the second planetary gear 122 and the first planetary carrier 14, thus achieving direct drive in second gear.

[0071] like Figure 8 As shown, when it is determined that the vehicle is in direct drive second gear mode, and the third sun gear 3 is connected to the first motor 61 and the second planetary carrier 5 is connected to the engine 60, a seventh target control strategy in the control strategy set is generated. The seventh target control strategy is used to control the engine 60 to start so that the first motor 61 generates electricity and the vehicle is in direct drive second gear power generation mode.

[0072] Specifically, engine 60 transmits power to the second sun gear 11 via input shaft 1 and second clutch 7. At this time, the first ring gear 13 is braked by the first braking assembly 16. Power is transmitted to output shaft 17 via second planetary gears 122 and first planetary carrier 14, thus achieving direct drive in second gear. Furthermore, engine 60 transmits power to the second planetary carrier 5 via input shaft 1. Since the second ring gear 6 is fixed, power is transmitted to the third sun gear 3 via third planetary gears 4, and then input to the first motor 61, thus achieving power generation. The first motor 61 then operates, realizing direct drive in second gear power generation.

[0073] like Figure 9As shown, based on operating condition information, first operating state information, and second operating state information, a control strategy set is generated, including: when it is determined that the first braking component 16 is in the first braking position, the second braking component 15 is in the second release position, the first clutch 8 is in the first engagement state, the second clutch 7 is in the second engagement state, and the first sun gear 10 and the second sun gear 11 are connected to the engine 60, an eighth target control strategy is generated in the control strategy set. The eighth target control strategy is used to control the engine 60 to start so that the vehicle is in direct drive third gear mode.

[0074] Specifically, the engine 60 transmits power through the input shaft 1, via the second clutch 7 to the second sun gear 11, and via the first clutch 8 to the first sun gear 10. At this time, the first ring gear 13 is braked by the first braking assembly 16, and the power is transmitted through the first planetary gear 121 and via the first planetary carrier 14 to the output shaft 17, thus achieving direct drive in three gears.

[0075] like Figure 10 As shown, when the vehicle is determined to be in direct drive third gear mode, and the third sun gear 3 is connected to the first motor 61 and the second planetary carrier 5 is connected to the engine 60, a ninth target control strategy is generated in the control strategy set. The ninth target control strategy is used to control the engine 60 to start so that the first motor 61 generates electricity and the vehicle is in direct drive third gear power generation mode.

[0076] Specifically, engine 60 transmits power through input shaft 1, via second clutch 7 to second sun gear 11, and via first clutch 8 to first sun gear 10. At this time, first ring gear 13 is braked by first braking assembly 16. Power is transmitted through first planetary gear 121, via first planetary carrier 14 to output shaft 17, thus achieving direct drive third gear. Based on this, engine 60 transmits power through input shaft 1 to second planetary carrier 5. Since second ring gear 6 is fixed, power is transmitted through third planetary gear 4 to third sun gear 3, and then input to first motor 61, thus achieving power generation. At this time, first motor 61 operates, realizing direct drive third gear power generation.

[0077] like Figure 11 As shown, based on operating condition information, first operating state information, and second operating state information, a control strategy set is generated, including: when it is determined that the first braking component 16 is in the first release position, the second braking component 15 is in the second braking position, the first clutch 8 is in the first disengaged state, the second clutch 7 is in the second engaged state, and the second sun gear 11 is connected to the engine 60, and the first sun gear 10 is connected to the second braking component 15, a tenth target control strategy is generated in the control strategy set. The tenth target control strategy is used to control the engine 60 to start so that the vehicle is in direct drive fourth gear mode.

[0078] Specifically, the engine 60 transmits power through the input shaft 1 to the second sun gear 11 via the second clutch 7. At this time, the first sun gear 10 is braked by the second braking assembly 15, and the power is transmitted through the second planetary gear 122 to the output shaft 17 via the first planetary carrier 14, thus achieving direct drive fourth gear.

[0079] like Figure 12 As shown, when the vehicle is determined to be in direct drive fourth gear mode, and the third sun gear 3 is connected to the first motor 61 and the second planetary carrier 5 is connected to the engine 60, the eleventh target control strategy in the control strategy set is generated. The eleventh target control strategy is used to control the engine 60 to start so that the first motor 61 generates electricity and the vehicle is in direct drive fourth gear power generation mode.

[0080] Specifically, engine 60 transmits power to the second sun gear 11 via input shaft 1 and second clutch 7. At this time, the first sun gear 10 is braked by the second braking assembly 15. Power is then transmitted to output shaft 17 via second planetary gears 122 and first planetary carrier 14, achieving direct-drive fourth gear. Furthermore, engine 60 transmits power to the second planetary carrier 5 via input shaft 1. Since the second ring gear 6 is fixed, power is transmitted to the third sun gear 3 via third planetary gears 4, and then input to the first motor 61, achieving power generation. The first motor 61 then operates, realizing direct-drive fourth-gear power generation.

[0081] like Figure 13 As shown, based on operating condition information, first operating state information, and second operating state information, a control strategy set is generated, including: when it is determined that the first braking component 16 is in the first braking position, the second braking component 15 is in the second release position, the first clutch 8 is in the first disengaged state, the second clutch 7 is in the second disengaged state, and the first sun gear 10 is connected to the second motor 62, a twelfth target control strategy is generated in the control strategy set. The twelfth target control strategy is used to control the engine 60 to shut down so that the vehicle is in kinetic energy recovery mode.

[0082] Specifically, the braking power is transmitted to the output shaft 17. At this time, since the first gear ring 13 is braked by the first braking assembly 16, the power is transmitted through the first planetary carrier 14 and the first planetary gear 121 to the first sun gear 10 to drive the second motor 62 to recover kinetic energy.

[0083] like Figure 14As shown, based on operating condition information, first operating state information, and second operating state information, a control strategy set is generated, including: when it is determined that the first braking component 16 is in the first release position, the second braking component 15 is in the second release position, the first clutch 8 is in the first disengaged state, the second clutch 7 is in the second disengaged state, and the third sun gear 3 is connected to the first motor 61 and the second planetary carrier 5 is connected to the engine 60, a thirteenth target control strategy is generated in the control strategy set. The thirteenth target control strategy is used to control the engine 60 to start so that the vehicle is in parking power generation mode.

[0084] Specifically, the engine 60 transmits power to the second planetary carrier 5 via the input shaft 1. Since the second ring gear 6 is fixed, the power is transmitted to the third sun gear 3 via the third planetary gear 4, and then input to the first motor 61 via the third sun gear 3, thus realizing the power generation function. At this time, the first motor 61 is working, realizing parking power generation.

[0085] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0086] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0087] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0088] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A control method of a vehicle for controlling a vehicle including a hybrid transmission, characterized by, The hybrid transmission comprises an engine (60), a first motor (61) and a second motor (62), and further comprises: A first planetary gear train, the first planetary gear train comprising a first carrier (14), a plurality of first planet gears (121), a plurality of second planet gears (122), a first ring gear (13) and a first sun gear (10) and a second sun gear (11), the plurality of first planet gears (121) and the plurality of second planet gears (122) being coaxially arranged, the first carrier (14) being connected with the plurality of first planet gears (121) and the plurality of second planet gears (122), the first sun gear (10) being arranged between the plurality of first planet gears (121), the second sun gear (11) being arranged between the plurality of second planet gears (122), the plurality of first planet gears (121) being arranged in the first ring gear (13), the first sun gear (10) being connected with the second motor (62), the first carrier (14) being connected with an output shaft (17); A first brake assembly (16), the first brake assembly (16) being arranged adjacent to the first ring gear (13), the first brake assembly (16) having a first brake position in which the first brake assembly (16) is engaged with the first ring gear (13), and the first brake assembly (16) having a first release position in which the first brake assembly (16) is disengaged from the first ring gear (13); A second brake assembly (15), the second brake assembly (15) being arranged adjacent to the first sun gear (10), the second brake assembly (15) having a second brake position in which the second brake assembly (15) is engaged with the first sun gear (10), and the second brake assembly (15) having a second release position in which the second brake assembly (15) is disengaged from the first sun gear (10); A second planetary gear train, the second planetary gear train comprising a second carrier (5), a plurality of third planet gears (4), a second ring gear (6) and a third sun gear (3), the second carrier (5) being connected with the plurality of third planet gears (4), the third sun gear (3) being arranged between the plurality of third planet gears (4), the plurality of third planet gears (4) being arranged in the second ring gear (6), the second carrier (5) being connected with the engine (60) through an input shaft (1), the third sun gear (3) being connected with the first motor (61), the second ring gear (6) being fixedly connected with a mounting base; Wherein, the first sun gear (10) and the second sun gear (11) are selectively connected with at least one of the first motor (61) and the engine (60) through a clutch assembly; The clutch assembly comprises: A first clutch (8), a first end of the first clutch (8) being connected with the second motor (62), the second brake assembly (15) and the first sun gear (10), the first clutch (8) having a first engagement state, and the first clutch (8) having a first disengagement state; A second clutch (7) is arranged between the first clutch (8) and the second sun gear (11), and the second clutch (7) is arranged between the engine (60) and the first motor (61), and the second clutch (7) is arranged between the first clutch (8) and the second sun gear (11), and the second clutch (7) has a second combined state, and the second clutch (7) has a second separated state; The first end of the second clutch (7) is connected with the second end of the first clutch (8), the second end of the second clutch (7) is connected with the second sun gear (11) through the intermediate shaft (18), and the third end of the second clutch (7) is connected with the engine (60) through the input shaft (1); The method comprises the following steps: Obtaining working condition information of the vehicle, wherein the working condition information comprises at least one of the following: first working condition information that the first sun gear (10) and the second sun gear (11) are connected with the engine (60), second working condition information that the first sun gear (10) and the second sun gear (11) are connected with the first motor (61), and third working condition information that the first carrier (14) is connected with the engine (60), the first motor (61) and the second motor (62); Obtaining first working state information of the first brake assembly (16) and the second brake assembly (15), wherein the first working state information comprises at least one of the following: information that the first brake assembly (16) is in the first brake position and the first release position, and information that the second brake assembly (15) is in the second brake position or the second release position; Obtaining second working state information of the first clutch (8) and the second clutch (7), wherein the second working state information comprises at least one of the following: information that the first clutch (8) is in a first combined state and a first separated state, and information that the second clutch (7) is in a second combined state and a second separated state; Based on the working condition information, the first working state information and the second working state information, a control strategy set is generated, and the control strategy set is used to control at least one of the engine (60), the first motor (61) and the second motor (62) to be turned on and turned off; Based on the working condition information, the first working state information and the second working state information, the control strategy set is generated, comprising: In a case where it is determined that the first brake assembly (16) is in the first brake position, the second brake assembly (15) is in the second release position, the first clutch (8) is in the first combined state, the second clutch (7) is in the second separated state, and the first sun gear (10) is connected with the engine (60), a third target control strategy in the control strategy set is generated, wherein the third target control strategy is used to control the engine (60) to be turned on; Based on the working condition information, the first working state information and the second working state information, the control strategy set is generated, comprising: In a case where it is determined that the first brake assembly (16) is in the first release position, the second brake assembly (15) is in the second release position, the first clutch (8) is in the first disengaged state, the second clutch (7) is in the second disengaged state, and the third sun gear (3) is connected with the first motor (61) and the second carrier (5) is connected with the engine (60), a thirteenth target control strategy in the control strategy set is generated, where the thirteenth target control strategy is used to control the engine (60) to be started, so that the vehicle is in a parking power generation mode.

2. The control method of a vehicle according to claim 1, characterized by The first brake assembly (16) and the second brake assembly (15) are independently controlled.

3. The control method according to claim 1 or 2, characterized by, The control strategy set is generated based on the working condition information, the first working state information and the second working state information, and includes: In a case where it is determined that the first brake assembly (16) is in the first release position, the second brake assembly (15) is in the second release position, the first clutch (8) is in the first disengaged state, the second clutch (7) is in the second disengaged state, and the third sun gear (3) is connected with the first motor (61) and the second carrier (5) is connected with the engine (60), a thirteenth target control strategy in the control strategy set is generated, where the thirteenth target control strategy is used to control the engine (60) to be started, so that the vehicle is in a parking power generation mode.

4. The control method according to claim 1 or 2, characterized by, The control strategy set is generated based on the working condition information, the first working state information and the second working state information, and includes: In a case where it is determined that the first brake assembly (16) is in the first release position, the second brake assembly (15) is in the second release position, the first clutch (8) is in the first disengaged state, the second clutch (7) is in the second disengaged state, and the third sun gear (3) is connected with the first motor (61) and the second carrier (5) is connected with the engine (60), a thirteenth target control strategy in the control strategy set is generated, where the thirteenth target control strategy is used to control the engine (60) to be started, so that the vehicle is in a parking power generation mode. In a case where it is determined that the first brake assembly (16) is in the first release position, the second brake assembly (15) is in the second release position, the first clutch (8) is in the first disengaged state, the second clutch (7) is in the second disengaged state, and the third sun gear (3) is connected with the first motor (61) and the second carrier (5) is connected with the engine (60), a thirteenth target control strategy in the control strategy set is generated, where the thirteenth target control strategy is used to control the engine (60) to be started, so that the vehicle is in a parking power generation mode.

5. The control method according to claim 1 or 2, characterized by, The control strategy set is generated based on the working condition information, the first working state information and the second working state information, and includes: In a case where it is determined that the first brake assembly (16) is in the first release position, the second brake assembly (15) is in the second release position, the first clutch (8) is in the first disengaged state, the second clutch (7) is in the second disengaged state, and the third sun gear (3) is connected with the first motor (61) and the second carrier (5) is connected with the engine (60), a thirteenth target control strategy in the control strategy set is generated, where the thirteenth target control strategy is used to control the engine (60) to be started, so that the vehicle is in a parking power generation mode. In a case where it is determined that the first brake assembly (16) is in the first braking position, the second brake assembly (15) is in the second releasing position, the first clutch (8) is in the first engaging state, the second clutch (7) is in the second disengaging state, and the first sun gear (10) is connected with the engine (60), a third target control strategy in the control strategy set is generated, where the third target control strategy is used to control the engine (60) to start, so that the vehicle is in a direct drive first gear mode; In a case where it is determined that the vehicle is in the direct drive first gear mode, and the third sun gear (3) is connected with the first motor (61), and the second carrier (5) is connected with the engine (60), a fifth target control strategy in the control strategy set is generated, where the fifth target control strategy is used to control the engine (60) to start, so that the first motor (61) generates electricity, and the vehicle is in a direct drive first gear electricity generation mode.

6. The control method according to claim 1 or 2, characterized by, Based on the working condition information, the first working state information and the second working state information, the control strategy set is generated, including: In a case where it is determined that the first brake assembly (16) is in the first braking position, the second brake assembly (15) is in the second releasing position, the first clutch (8) is in the first disengaging state, the second clutch (7) is in the second engaging state, and the second sun gear (11) is connected with the engine (60), a sixth target control strategy in the control strategy set is generated, where the sixth target control strategy is used to control the engine (60) to start, so that the vehicle is in a direct drive second gear mode; In a case where it is determined that the vehicle is in the direct drive second gear mode, and the third sun gear (3) is connected with the first motor (61), and the second carrier (5) is connected with the engine (60), a seventh target control strategy in the control strategy set is generated, where the seventh target control strategy is used to control the engine (60) to start, so that the first motor (61) generates electricity, and the vehicle is in a direct drive second gear electricity generation mode.

7. The control method according to claim 1 or 2, characterized by, Based on the working condition information, the first working state information and the second working state information, the control strategy set is generated, including: In a case where it is determined that the first brake assembly (16) is in the first braking position, the second brake assembly (15) is in the second releasing position, the first clutch (8) is in the first engaging state, the second clutch (7) is in the second engaging state, and the first sun gear (10) and the second sun gear (11) are connected with the engine (60), an eighth target control strategy in the control strategy set is generated, where the eighth target control strategy is used to control the engine (60) to start, so that the vehicle is in a direct drive third gear mode; In a case where it is determined that the vehicle is in the direct drive third gear mode, the third sun gear (3) is connected with the first motor (61), and the second carrier (5) is connected with the engine (60), a ninth target control strategy in the control strategy set is generated, where the ninth target control strategy is used to control the engine (60) to start, so that the first motor (61) generates electricity, and the vehicle is in the direct drive third gear electricity generation mode.

8. The control method according to claim 1 or 2, characterized by, The control strategy set is generated based on the working condition information, the first working state information and the second working state information, and includes: In a case where it is determined that the first brake assembly (16) is in the first release position, the second brake assembly (15) is in the second brake position, the first clutch (8) is in the first separation state, the second clutch (7) is in the second engagement state, and the second sun gear (11) is connected with the engine (60) and the first sun gear (10) is connected with the second brake assembly (15), a tenth target control strategy in the control strategy set is generated, where the tenth target control strategy is used to control the engine (60) to start, so that the vehicle is in the direct drive fourth gear mode. In a case where it is determined that the vehicle is in the direct drive fourth gear mode, the third sun gear (3) is connected with the first motor (61), and the second carrier (5) is connected with the engine (60), an eleventh target control strategy in the control strategy set is generated, where the eleventh target control strategy is used to control the engine (60) to start, so that the first motor (61) generates electricity, and the vehicle is in the direct drive fourth gear electricity generation mode.

9. The control method according to claim 1 or 2, characterized by, The control strategy set is generated based on the working condition information, the first working state information and the second working state information, and includes: In a case where it is determined that the first brake assembly (16) is in the first brake position, the second brake assembly (15) is in the second release position, the first clutch (8) is in the first separation state, the second clutch (7) is in the second separation state, and the first sun gear (10) is connected with the second motor (62), a twelfth target control strategy in the control strategy set is generated, where the twelfth target control strategy is used to control the engine (60) to stop, so that the vehicle is in the kinetic energy recovery mode.

10. A vehicle comprising a hybrid powertrain, characterized in that The hybrid power transmission device is the hybrid power transmission device included in the vehicle in the control method of the vehicle in any one of claims 1 to 9.

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