Transmission assembly, automobile and driving method

Abstract

The invention relates to a transmission assembly, an automobile and a driving method. The transmission assembly comprises a first transmission and a second transmission; the first transmission comprises a first output wheel, a planetary gear set and a synchronizing device, the first output wheel is in transmission connection with the first output end of the first motor, a planet carrier of the planetary gear set is in transmission connection with the engine, and the synchronizing device is used for achieving synchronization and separation of a sun wheel of the planetary gear set and the first output wheel. The synchronizing device is used for realizing synchronization and separation of the planet carrier and the first output wheel; the second transmission is in transmission connection with the gear ring of the planetary gear set, the second transmission is in transmission connection with the second motor, and the second transmission is used for being in transmission connection with a driven piece. The transmission assembly can be used for a hybrid power system, and multiple modes and multiple gears are achieved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automobile transmission systems, and in particular to a transmission assembly, an automobile, and a driving method. Background Art

[0002] As the automotive market segments develop, the technology of hybrid vehicles is also developing. The engine and electric motor are connected in series through a hybrid transmission, which can change speed, drive and split power.

[0003] A planetary gear set is often set in a hybrid transmission, which can realize the power distribution between the engine and the motor and coordinate the output of different power sources. Specifically, the engine is usually connected to the planet carrier, and the output end of the motor serves as the sun gear, which is in constant mesh with the planet carrier and then outputs to the outside through the ring gear.

[0004] On the one hand, when the electric motor starts the engine, due to its meshing with the engine input shaft and the constant meshing between the outer ring gear and the transmission intermediate shaft, this will cause impact on the wheel end; on the other hand, this hybrid transmission has fewer output modes and it is difficult to meet more complex drive requirements. Summary of the invention

[0005] Based on this, it is necessary to provide a transmission assembly, a vehicle and a driving method to address at least one of the above technical problems.

[0006] The disclosed embodiment provides a transmission assembly, which includes: a first transmission and a second transmission; the first transmission includes a first output wheel, a planetary gear set and a synchronizing device, the first output wheel is transmission-connected to the first output end of the first motor, the planetary carrier of the planetary gear set is transmission-connected to the engine, the synchronizing device is used to synchronize and disengage the sun gear of the planetary gear set with the first output wheel, and the synchronizing device is used to synchronize and disengage the planetary carrier with the first output wheel; the second transmission is transmission-connected to the ring gear of the planetary gear set, the second transmission is transmission-connected to the second motor, and the second transmission is used to transmission-connect to a driven member.

[0007] By providing the first output wheel and the synchronization device, the transmission matching relationship between the first motor and the engine can be adjusted, and different working modes can be realized through the planetary gear set, wherein a direct drive mode in which the engine directly drives the driven member can be realized. In addition, a series mode in which the sun gear is disengaged from the first motor and the planetary carrier can be realized, thereby preventing the first motor from impacting the wheel end. The transmission assembly of the disclosed embodiment can be used in a hybrid power system to realize multi-mode and multi-gear, and to achieve good power output.

[0008] In some embodiments, the synchronizing device is used to achieve synchronization and disengagement of the sun gear and the planet carrier of the planetary gear set, wherein the synchronizing device is configured as follows: when the first output wheel is synchronized with the sun gear, the first output wheel is disengaged from the planet carrier; when the first output wheel is synchronized with the planet carrier, the first output wheel is disengaged from the sun gear.

[0009] With such an arrangement, multiple mode switching can be achieved by utilizing the multi-position movement of one synchronizer, with a compact structure and simple operation.

[0010] In some embodiments, the transmission assembly further includes a fixed portion, and the synchronizing device is used to achieve synchronization and disengagement between the sun gear and the fixed portion.

[0011] With such an arrangement, the synchronization device can be used to fix the first output wheel, thereby ensuring the implementation of at least one working mode of the transmission assembly.

[0012] In some embodiments, the planetary gear set further includes a first coaxial wheel and a second coaxial wheel; the first coaxial wheel is coaxial with and fixed to the sun wheel, and the second coaxial wheel is coaxial with and fixed to the planet carrier; the synchronizing device is connected to the sun wheel via the first coaxial wheel, and the synchronizing device is connected to the planet carrier via the second coaxial wheel.

[0013] Such a setting enables flexible layout, effective use of installation space, and ensures switching between various modes.

[0014] In some embodiments, along the axial direction of the planetary gear set, the engine is located on the first side, and the first motor is located on the second side; the fixed part, the first output wheel, the first coaxial wheel and the second coaxial wheel are located on the first side, and are arranged in sequence from the first side to the second side; the synchronization device has two gear hubs arranged at intervals.

[0015] With such arrangement, the transmission assembly has a simple structure and the synchronization device is easy to operate.

[0016] In some embodiments, along the axial direction of the planetary gear set, the engine is located on the first side, and the first motor is located on the second side; the fixed part and the first output wheel are located on the first side, and the second coaxial wheel is located on the second side; the fixed part, the first output wheel, the first coaxial wheel and the second coaxial wheel are arranged in sequence from the first side to the second side; the synchronization device has two gear hubs arranged at intervals.

[0017] With such arrangement, the planetary gear set has a compact structure.

[0018] In some embodiments, the transmission assembly also includes a second output wheel, which is coaxially fixed with the first output wheel, and the second output wheel and the first output wheel are located on both sides of the planetary gear set; the synchronizing device includes a first synchronizer and a second synchronizer, the first synchronizer is used to achieve synchronization and disengagement of the sun gear and the first output wheel, and the second synchronizer is used to achieve synchronization and disengagement of the planetary carrier and the second output wheel.

[0019] With such arrangement, different embodiments are designed to meet different requirements, and the synchronization device is simple and reliable.

[0020] In some embodiments, the transmission assembly further includes a one-way clutch, and the planet carrier is connected to the engine via the one-way clutch.

[0021] With this arrangement, the power output of the engine can be controlled according to demand.

[0022] An embodiment of the present disclosure provides a vehicle, which includes the aforementioned transmission assembly.

[0023] The automobile of the disclosed embodiment has good driving performance through the transmission assembly. The transmission assembly has at least one of the following beneficial effects: comprehensive functions, can realize multiple working modes such as pure electric, power split, series, parallel, power generation, etc.; in pure electric mode, dual electric motors are used for driving, which has stronger power; in parallel mode, the engine can be driven in two gears, which can take into account both power and economy; when starting the engine, no impact is generated on the wheel end; simple structure, low cost; and high reliability.

[0024] The disclosed embodiment provides a driving method, which utilizes the aforementioned transmission assembly to transmit power of at least one of an engine, a first motor, and a second motor to a driven member.

[0025] The driving method of the embodiment of the present disclosure is implemented by using the aforementioned transmission assembly, and has at least one of the aforementioned beneficial effects. The driving method is easy to implement.

[0026] In some embodiments, the conveying step includes: using a synchronization device to synchronize the sun gear with the planet carrier and to disconnect the first output gear from the planet carrier, disconnect the first output gear from the sun gear, and use the engine to achieve a first gear direct drive mode.

[0027] With this arrangement, the engine has high driving efficiency.

[0028] Exemplarily, the step of conveying includes: utilizing a synchronization device to disengage the planet carrier from the first output wheel and to synchronize the sun wheel with a fixed portion of the transmission assembly, and utilizing the engine to realize a second gear direct drive mode.

[0029] This arrangement achieves a higher rotation speed.

[0030] An embodiment of the present disclosure provides a control method, which includes: in response to the planetary carrier being synchronized with the first output wheel and the sun wheel being disengaged from the first output wheel, the first motor generates electricity; in response to the planetary carrier being disengaged from the first output wheel and the sun wheel being synchronized with the first output wheel, the first motor generates electricity.

[0031] The control method can realize the series mode, the idle power generation mode and the continuously variable speed mode.

[0032] Exemplarily, the control method further includes: in response to the planet carrier being disengaged from the first output gear and the sun gear being synchronized with the first output gear, and in response to the engine being stopped, causing the first electric motor to rotate forward.

[0033] This control method can achieve pure electric mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic structural diagram of a transmission assembly according to an embodiment of the present disclosure;

[0035] Figure 2 is a schematic structural diagram of a first transmission in a first state according to an embodiment of the present disclosure;

[0036] Figure 3 is a schematic structural diagram of a first transmission in a second state according to an embodiment of the present disclosure;

[0037] Figure 4 is a schematic structural diagram of a transmission assembly according to an embodiment of the present disclosure;

[0038] Figure 5 is a schematic structural diagram of a first transmission in a third state according to an embodiment of the present disclosure;

[0039] Figure 6 is a schematic structural diagram of a transmission assembly according to an embodiment of the present disclosure;

[0040] Figure 7 is a schematic structural diagram of a first transmission in a fourth state according to an embodiment of the present disclosure;

[0041] Figure 8 is a schematic structural block diagram of a car according to an embodiment of the present disclosure;

[0042] Fig. 9 is a schematic flowchart of a driving method according to an embodiment of the present disclosure;

[0043] Fig.10 is a schematic flowchart of a control method according to an embodiment of the present disclosure;

[0044] Fig.11 It is a schematic block diagram of a control device according to an embodiment of the present disclosure.

[0045] Description of reference numerals: 1, first output wheel set; 11, first output wheel; 12, second output wheel; 2, planetary gear set; 21, planet carrier; 22, sun gear; 23, ring gear; 24, planetary gear; 25, first coaxial wheel; 26, second coaxial wheel; 3, synchronization device; 31, first synchronizer; 311, first gear hub; 312, second gear hub; 32, second synchronizer; 4, fixed part; 5, one-way clutch; 6, intermediate shaft; 61, first intermediate wheel; 62, second intermediate wheel; 7, second output wheel set;

[0046] 100, engine; 200, first motor; 2001, first output end; 2002, first stator; 300, second motor; 3001, second output end; 3002, second stator; 400, differential;

[0047] 1000, transmission assembly; 1100, first transmission; 1200, second transmission; 2000, automobile; 2100, wheel; 2200, controller; 3000, control device; 3100, series module; 3200, idle module; 3300, pure electric module; 3400, starting module; 3500, first direct drive module; 3600, parallel module; 3700, second direct drive module. DETAILED DESCRIPTION

[0048] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present disclosure more obvious and understandable, the specific implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the present disclosure. However, the embodiments of the present disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the embodiments of the present disclosure, so the embodiments of the present disclosure are not limited by the specific examples of the embodiments disclosed below.

[0049] In the description of the embodiments of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "perpendicular", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present disclosure.

[0050] In the embodiments of the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. Exemplarily, the first output wheel may also be referred to as the second output wheel, and the second output wheel may also be referred to as the first output wheel. In the description of the embodiments of the present disclosure, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the embodiments of the present disclosure, unless otherwise clearly specified and limited, the terms "connected", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a flexible connection, or a rigid connection along at least one direction; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or directly connected with the presence of an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. The terms "installed", "set", "fixed", etc. can be broadly understood as connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0053] refer to Figure 1 , Figure 1 1 shows a transmission assembly in an embodiment of the present disclosure. The transmission assembly 1000 provided in the embodiment of the present disclosure includes a first transmission 1100 and a second transmission 1200. The first transmission 1100 and the second transmission 1200 are transmission-connected, and the first transmission 1100 may be a previous transmission of the second transmission 1200. In some embodiments, other transmission components connected to the first transmission 1100 or the second transmission 1200 are also considered as part of the transmission assembly 1000.

[0054] Combination Figure 2 and Figure 3As shown, in some embodiments, the first transmission 1100 includes a planetary gear set 2, which includes a planet carrier 21, a sun gear 22, a ring gear 23, and a planetary gear 24. The planet carrier 21 is drivingly connected to the engine 100, which may be a gasoline engine, for example.

[0055] The first transmission 1100 further includes a first output wheel 11. Figure 1 and Figure 4 For example, the first transmission 1100 includes a first output wheel set 1, which includes at least one output wheel, for example, a first output wheel 11, and may also include a second output wheel 12. The first output wheel 11 and the second output wheel 12 are coaxially fixed, and there may be a gap between them, or they may be arranged in an integrated manner. Figure 1 As shown, the first output wheel 11 and the second output wheel 12 are integrally arranged, and can also be considered as a thicker wheel divided into at least two sections along its axial direction, and each section can work separately.

[0056] The first output wheel 11 is transmission-connected to the first output end 2001 of the first motor 200. The first output wheel set 1 is transmission-connected to the first output end 2001. The first output end 2001 may be a mover of the first motor 200, and the first motor 200 further includes a first stator 2002.

[0057] The first transmission 1100 includes a synchronizing device 3. The synchronizing device 3 is used to synchronize and disengage the sun gear 22 of the planetary gear set 2 with the first output gear 11. The sun gear 22 and the first output gear 11 may be indirectly connected when synchronized. The synchronizing device 3 is used to synchronize and disengage the planet carrier 21 and the first output gear 11. The planet carrier 21 and the first output gear 11 may be indirectly connected when synchronized.

[0058] like Figure 1 , Figure 4 and Figure 6 As shown, the second transmission 1200 is transmission-connected to the ring gear 23 of the planetary gear set 2. The inner teeth of the ring gear 23 can be used to mesh with the planetary gear 24, and the outer teeth can mesh with the second transmission 1200. The second transmission 1200 is transmission-connected to the second motor 300, and the second transmission 1200 is used to transmission-connect to the driven member.

[0059] The transmission assembly 1000 of the disclosed embodiment can be used in a hybrid power system to achieve multi-mode and multi-gear positions and achieve good power output.

[0060] like Figure 1As shown, in some embodiments, the planetary gear set 2 further includes a first coaxial wheel 25 and a second coaxial wheel 26, the first coaxial wheel 25 is coaxial with and fixed to the sun gear 21, and the second coaxial wheel 26 is coaxial with and fixed to the planet carrier 21. The synchronizer 3 is connected to the sun gear 22 through the first coaxial wheel 25, and the synchronizer 3 is connected to the planet carrier 21 through the second coaxial wheel 26. By providing the first coaxial wheel 25 and the second coaxial wheel 26, the transmission assembly 1000 can be flexibly laid out, effectively utilize the installation space, and ensure switching between various modes.

[0061] For example, along the axial direction of the planetary gear set 2, the engine 100 is located on the first side, that is, Figure 1 The first motor 200 is located on the second side. Figure 1 The first output wheel 11, the second output wheel 12, the first coaxial wheel 25 and the second coaxial wheel 26 are located on the first side and are arranged in sequence from the first side to the second side.

[0062] For example, the synchronization device 3 may include a first synchronizer 31. The first synchronizer 31 of the synchronization device 3 includes two gear hubs arranged at intervals, wherein the first gear hub 311 may be located on the left, and the second gear hub 312 may be located on the right. Figure 2 As shown, the first synchronizer 31 is located at the first position A, the first gear hub 311 is connected to the first output wheel 11, and the second gear hub 312 is connected to the first coaxial wheel 25, so that when the first output wheel 11 is synchronized with the sun gear 22, the first output wheel 11 is separated from the planet carrier 21. Figure 3 As shown, the first synchronizer 31 is located at the second position B, the first gear hub 311 is indirectly connected to the first output wheel 11 through the second output wheel 12, and the second gear hub 312 is connected to the second coaxial wheel 26, with the first coaxial wheel 25 spanning between them, so that when the first output wheel 11 is synchronized with the planetary carrier 21, the first output wheel 11 is disengaged from the sun gear 22.

[0063] Furthermore, the synchronization device 3 is used to achieve synchronization and disengagement between the sun gear 22 and the planetary carrier 21 of the planetary gear set 2. Figure 1 , the first synchronizer 31 can be in the third position C, specifically, the first gear hub 311 is connected to the first coaxial wheel 25 , the second gear hub 312 is connected to the second coaxial wheel 26 , and the first synchronizer 31 is disengaged from the first output wheel set 1 .

[0064] The transmission assembly 1000 can realize multiple mode switching by utilizing the multi-position movement of a synchronizer, and has a compact structure and simple operation.

[0065] In some embodiments, the transmission assembly 1000 further includes a fixed portion 4, and the synchronizing device 3 is used to synchronize and disengage the sun gear 22 with the fixed portion 4. Exemplarily, the fixed portion 4, the first output wheel 11, the first coaxial wheel 25, and the second coaxial wheel 26 are located on the first side and are sequentially arranged in a direction from the first side to the second side. The transmission assembly 1000 has a simple structure and is easy to operate the synchronizing device 3.

[0066] refer to Figure 1 , exemplarily, the first synchronizer 31 can be in the fourth position D. After the first synchronizer 31 moves to the left, the first gear hub 311 is connected to the fixing portion 4, the second gear hub 312 is connected to the first coaxial wheel 25 to fix the sun gear 22, and the first synchronizer 31 is disengaged from the second coaxial wheel 26. The synchronization device 3 can be used to fix the sun gear 22, ensuring the implementation of at least one working mode of the transmission assembly 1000.

[0067] In other embodiments, the synchronization device 3 may include multiple synchronizers, for example, two synchronizers, one for synchronizing and disengaging the fixed portion 4 with the first output gear set 1 , and the other for synchronizing and disengaging the sun gear 22 with the planet carrier 21 .

[0068] Exemplarily, the second transmission 1200 includes an intermediate shaft 6. The intermediate shaft 6 includes a first intermediate wheel 61 and a second intermediate wheel 62 which are coaxially arranged, and the ring gear 23 of the first transmission 1100 can be engaged with the first intermediate wheel 61. The pitch circle diameter of the first intermediate wheel 61 can be greater than the pitch circle diameter of the second intermediate wheel 62.

[0069] The second output end 3001 of the second motor 300 may be a rotor, and the second motor 300 may further include a second stator 3002. The second output wheel set 7 is transmission-connected to the second output end 3001 of the second motor 300, and the second output wheel set 7 may include only one output wheel. The second output wheel set 7 may be considered to belong to the second transmission 1200. The second output wheel set 7 may also be engaged with the first intermediate wheel 61, and the second output wheel set 7 and the ring gear 23 may realize parallel transmission when transmitting power to the intermediate shaft 6. The second transmission 1200 may output power to the outside, and for the automobile 2000, for example, the power may be output to the differential 400.

[0070] The embodiment of the present disclosure provides a driving method, which uses the aforementioned transmission assembly 1000 to transmit the power of at least one of the engine 100, the first motor 200 and the second motor 300 to the driven member. In some embodiments, the transmission assembly 1000 further includes a one-way clutch 5, and the planet carrier 21 is connected to the engine 100 through the one-way clutch 5, so that the power output of the engine 100 can be controlled according to demand.

[0071] refer to Figure 1, exemplarily, the synchronizing device 3 is in the first position A, and the first motor 200 is connected to the sun gear 22. The one-way clutch 5 can be locked, the first motor 200 rotates forward, the second motor 300 rotates forward, and the hybrid power system including the transmission assembly 1000 realizes the pure electric mode, and the first motor 200 and the second motor 300 cooperate to output and drive the driven member.

[0072] refer to Figure 1 and Figure 3 For example, the synchronizer 3 is in the second position B, the first motor 200 is connected to the engine 100 through the first output wheel 11, the synchronizer 3, the second coaxial wheel 26, and the planet carrier 21, and the sun gear 22 is in a movable state, the engine 100 can be started with the help of the first motor 200, and the first motor 200 is started in forward rotation, and the driven parts will not be impacted through the ring gear 23. The transmission assembly 1000 can achieve stable starting.

[0073] Exemplarily, the synchronizing device 3 is in the second position B, so that the first motor 200 is connected to the planetary carrier 21. The hybrid system can be in series mode, and after the engine 100 is started, the first motor 200 is driven to generate electricity, and the electric energy can be supplied to the second motor 300 to drive the driven member.

[0074] Exemplarily, the synchronizing device 3 is in the first position A. The engine 100 rotates forward, the first motor 200 rotates reversely, and the ring gear 23 rotates forward. With this configuration, the power output by the engine 100 is output to the driven member and the first motor 200 respectively, and the first motor 200 generates electricity. The transmission assembly 1000 is used to realize the power split mode, which can realize stepless speed change. The electricity generated by the first motor 200 can be stored or supplied to the second motor 300.

[0075] Exemplarily, the synchronizing device 3 is in the first position A. The one-way clutch 5 is released, the engine 100 is working, the driven member can be held by a brake device, and the hybrid system can be in an idle power generation mode. The transmission assembly 1000 is used to split the power of the engine 100 to the first motor 200, and the first motor 200 is used for power generation.

[0076] Exemplarily, the synchronizer 3 can be in the third position C, the sun gear 22 is connected to the planet carrier 21, and can rotate synchronously, and then can drive the ring gear 23 synchronously. Based on the transmission assembly 1000 in this state, the engine 100 can be used to directly drive the driven part, the first motor 200 can not work, and the second motor 300 can be idle or configured to be disconnected. The efficiency of the first gear direct drive mode is higher than the efficiency of the power split mode, and the power of the first gear direct drive mode is larger. Optionally, the second motor 300 can work to realize the first parallel mode. The engine 100 and the second motor 300 jointly drive the driven part to increase the power.

[0077] Exemplarily, the synchronizer 3 may be in the fourth position D, and the sun gear 22 is fixed to the fixed part 4. The engine 100 can directly drive the driven member, the first motor 200 may not work, and the second motor 300 may idle or be configured to be disconnected. When the engine 100 drives the planetary carrier 21 to rotate, the planetary gear 24 drives the ring gear 23 at a higher speed than the planetary carrier 21. The second gear direct drive mode has a high speed; the efficiency is higher than the efficiency of the power split mode. Optionally, the second motor 300 can work to realize the second parallel mode. The engine 100 and the second motor 300 jointly drive the driven member to increase the power.

[0078] By setting the first output wheel 11 and the synchronization device 3 in the transmission assembly 1000, the transmission coordination relationship between the first motor 200 and the engine 100 can be adjusted, and different working modes can be realized through the planetary gear set 2. It is also believed that the above-mentioned driving method can perform different working modes, such as a direct drive mode in which the engine 100 directly drives the driven part, a series mode in which the sun gear 22 is disengaged from the first motor 200 and the planetary carrier 21, etc.

[0079] refer to Figure 8 The disclosed embodiment provides a car 2000, which includes the aforementioned transmission assembly 1000. The car 2000 has good driving performance through the transmission assembly 1000. The transmission assembly 1000 has at least one of the following beneficial effects: comprehensive functions, which can realize multiple working modes such as pure electric, power split, series, parallel, idle power generation, direct drive, and start; in pure electric mode, dual motor drive is adopted, which has stronger power; in parallel mode, two-speed drive can be used, which can take into account both power and economy; when starting the engine 100, no impact is generated on the wheel end; simple structure, low cost; and high reliability.

[0080] In other embodiments, reference Figure 4 and Figure 5The first transmission 1100 of the transmission assembly 1000 includes a first output wheel set 1, a planetary gear set 2 and a synchronization device 3. The first output wheel set 1 includes a first output wheel 11 and a second output wheel 12. The second output wheel 12 is coaxially fixed with the first output wheel 11, and the second output wheel 12 and the first output wheel 11 are located on both sides of the planetary gear set 2.

[0081] The synchronization device 3 includes a first synchronizer 31 and a second synchronizer 32. The first synchronizer 31 is used to achieve synchronization and disengagement between the sun gear 22 and the first output gear 11. Specifically, the sun gear 22 is connected to the first output gear 11 through a first coaxial gear 25; the second synchronizer 32 is used to achieve synchronization and disengagement between the planet carrier 21 and the second output gear 12. Specifically, the planet carrier 21 is connected to the second output gear 12 through a second coaxial gear 26. Figure 4 The configuration of the transmission assembly 1000 of the illustrated embodiment is different from that of Figure 1 The structure of the transmission assembly 1000 of the illustrated embodiment is such that different embodiments can meet different requirements. The synchronization device 3 of the present embodiment is simple and reliable.

[0082] The transmission assembly 1000 also includes a fixed part 4 and a one-way clutch 5. The second synchronizer 32 can be used to achieve synchronization and disengagement between the fixed part 4 and the second output wheel 12. The planetary carrier 21 is connected to the engine 100 through the one-way clutch 5, and the power output of the engine can be controlled according to demand.

[0083] In other embodiments, reference Figure 6 and Figure 7 The first transmission 1100 of the transmission assembly 1000 includes a first output wheel set 1, a planetary gear set 2 and a synchronization device 3. The first output wheel set 1 includes a first output wheel 11 and a second output wheel 12. The second output wheel 12 is coaxially fixed with the first output wheel 11 and is located on the left side of the planetary gear set 2 in the figure, which is called the first side.

[0084] The synchronization device 3 includes a first synchronizer 31. The first synchronizer 31 has multiple positions. The first synchronizer 31 at the first position is used to synchronize the sun gear 22 with the first output gear 11 and is disengaged from the planet carrier 21; the first synchronizer 31 at the second position is used to synchronize the planet carrier 21 with the second output gear 12 and is disengaged from the sun gear 22. The first synchronizer 31 includes two gear hubs arranged at intervals, wherein the first gear hub 311 can be located on the left and the second gear hub 312 can be located on the right. Figure 7 As shown, the first gear hub 311 is meshed with the first output wheel 11 , and the second gear hub 312 is meshed with the first coaxial wheel 25 to drive the sun gear 22 , and the second output wheel 12 is spanned between the first gear hub 311 and the second gear hub 312 .

[0085] In other embodiments, the second gear hub 312 is longer and can respectively mesh with the first coaxial wheel 25 and the second coaxial wheel 26 through different sections. For example, when the first synchronizer 31 is in the third position, the first gear hub 311 meshes with the first coaxial wheel 25, and the second gear hub 312 meshes with the second coaxial wheel 26.

[0086] The planet carrier 21 is fixed with a second coaxial wheel 26 located at a second side of the sun wheel 22 , and the first coaxial wheel 25 can be flush with the sun wheel 22 along the axial direction. Figure 6 In the transmission assembly 1000 shown, the planetary gear set 2 has a compact structure and a simple and reliable construction.

[0087] The transmission assembly 1000 further includes a fixed portion 4. The synchronizer 3 may be disposed in the rotor of the first motor 200, and the second synchronizer 32 of the synchronizer 3 is adapted to engage with the fixed portion 4. When the second synchronizer 32 is engaged with the fixed portion 4, the first synchronizer 31 may lock the first coaxial wheel 25 using the second gear hub 312, or disengage from the first coaxial wheel 25. The synchronizer 3 may also be used to achieve synchronous locking of the first output wheel 11 and the fixed portion 4.

[0088] refer to Fig. 9 The embodiment of the present disclosure provides a driving method S100, which uses the aforementioned transmission assembly 1000 to transmit power of at least one of the engine 100, the first motor 200 and the second motor 300 to a driven member. The driving method S100 is easy to implement.

[0089] In some embodiments, the delivery step includes step S110 and step S120. Step S110, illustratively, uses Figure 1 When the transmission assembly 1000 is shown, the synchronization device 3 is used to synchronize the sun gear 22 with the planet carrier 21 and to disengage the first output gear 11 from the planet carrier 21 and the first output gear 11 from the sun gear 22. Step S120, the first gear direct drive mode is realized by using the engine 100. The driving efficiency of the engine 100 is high.

[0090] Exemplarily, the conveying step includes: step S130, using the synchronization device 3 to disengage the planet carrier 21 from the first output gear 11 and synchronize the sun gear 22 with the fixed part 4 of the transmission assembly 1000; step S140, using the engine 100 to realize the second gear direct drive mode.

[0091] For example, using Figure 4In the transmission assembly 1000 shown in FIG. 1 , in step S130, the second synchronizer 32 of the synchronization device 3 is used to disengage the planet carrier 21 from the second output wheel 12, indirectly disengage the first output wheel 11, and synchronize the sun gear 22 with the fixed part 4 of the transmission assembly 1000; in step S140, the second gear direct drive mode is realized by using the engine 100. The driving method S100 achieves a higher speed.

[0092] For example, using Figure 6 When the transmission assembly 1000 is shown, step S110 and step S120 may be performed, and step S130 and step S140 may also be performed.

[0093] refer to Figure 8 , exemplarily, the automobile 2000 includes a controller 2200. The controller 2200 can be electrically connected to the first motor 200 and the second motor 300, and can also be electrically connected to the synchronization device 3. The controller 2200 can be a vehicle computer, a vehicle processor, a test computer, etc. The automobile 2000 can include a differential 400 and a wheel 2100, and the transmission assembly 1000 can be connected to the wheel 2100 through the differential 400.

[0094] In one embodiment, the controller 2200 includes a processor, a memory, an input / output interface (I / O for short) and a communication interface. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface is connected to the system bus via the input / output interface. The processor is used to provide computing and control capabilities. The memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database is used to store, for example, power data.

[0095] Exemplarily, the controller 2200 includes a power control module (PCM), which can control the first motor 200 to be in a motoring state or a generating state, and further, can control the generating power of the first motor 200 .

[0096] refer to Fig.10 The present disclosure provides a control method S200, which can be used for Figure 8 In the application environment shown.

[0097] Exemplarily, the control method S200 includes: step S210, in response to the planet carrier 21 being synchronized with the first output wheel 11 and the sun wheel 22 being separated from the first output wheel 11, enabling the first motor 200 to generate electricity. The control method S200 can control the hybrid system to achieve a series mode.

[0098] Exemplarily, the control method S200 includes: step S220, in response to the planet carrier 21 being separated from the first output wheel 11 and the sun gear 22 being synchronized with the first output wheel 11, the first motor 200 generates electricity. The control method can control the hybrid power system to realize the idle power generation mode and the power split mode (continuously variable speed mode).

[0099] Exemplarily, the control method S200 further includes: step S230, in response to the planet carrier 21 being disengaged from the first output wheel 11 and the sun gear 22 being synchronized with the first output wheel 11, and in response to the engine 100 being stopped, the first motor 200 is forwardly rotated. The control method S200 can control the hybrid system to realize the pure electric mode.

[0100] refer to Fig.11 , the disclosed embodiment provides a control device 3000. Exemplarily, the control device 3000 is used to implement the steps of the aforementioned control method S200. The implementation scheme for solving the problem provided by the control device 3000 is similar to the implementation scheme described in the above method, so the specific limitations in one or more embodiments provided below can refer to the limitations on the driving method or control method above. The control device 3000 may include a series module 3100, an idle module 3200, a pure electric module 3300, a starting module 3400, a first direct drive module 3500, a parallel module 3600 and a second direct drive module 3700.

[0101] Exemplarily, the series module 3100 is used to implement step S210 . The starting module 3400 may be configured to: in response to the engine 100 not being operated and the synchronizer 3 being in the second position B, control the first motor 200 to start the engine 100 .

[0102] The idle speed module 3200 is used to implement step S220. The pure electric module 3300 is used to implement step S230.

[0103] The first direct drive module 3500 may be configured to: in response to the sun gear 22 being connected to the planet carrier 21, the first motor 200 is not operated. The first direct drive module 3500 is used to enable the hybrid system to achieve a first direct drive mode. The second direct drive module 3700 may be configured to: in response to the sun gear 22 being fixed to the fixing portion 4, the first motor 200 is not operated. The second direct drive module 3700 is used to enable the hybrid system to achieve a second direct drive mode.

[0104] When the first direct drive module 3500 or the second direct drive module 3700 is executed, the parallel module 3600 is optionally executed. The parallel module 3600 is configured to control the second motor 300 to rotate forward to increase power.

[0105] Each module in the control device 3000 can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of the processor in the controller 2200 in the form of hardware, or can be stored in the memory in the controller 2200 in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0106] In one embodiment, a computer program product is provided, including a computer program. A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Any reference to a memory, a database, or other medium used in the embodiments of the present disclosure may include at least one of a non-volatile and a volatile memory.

[0107] The technical features of the embodiments disclosed above can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0108] In the embodiments disclosed above, unless otherwise clearly specified and limited, the execution order of each step is not limited, for example, it can be executed in parallel, or it can be executed successively in different orders. The sub-steps of each step can also be executed alternately. The above-mentioned various forms of processes can be used, and steps can be reordered, added or deleted, as long as the desired results of the technical solution provided in the embodiment of the present disclosure can be achieved, and this document does not limit it here.

[0109] The embodiments disclosed above only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of patent protection required by the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A transmission assembly, characterized in that: including a first transmission and a second transmission; The first transmission comprises a first output wheel, a planetary gear set and a synchronizing device, wherein the first output wheel is drivingly connected to the first output end of the first motor, the planetary carrier of the planetary gear set is drivingly connected to the engine, the synchronizing device is used to synchronize and disengage the sun gear of the planetary gear set with the first output wheel, and the synchronizing device is used to synchronize and disengage the planetary carrier with the first output wheel; The second transmission is transmission-connected to the ring gear of the planetary gear set, the second transmission is transmission-connected to the second electric motor, and the second transmission is used for transmission-connection to a driven member.

2. The transmission assembly according to claim 1, characterized in that: The synchronizing device is used to achieve synchronization and disengagement of the sun gear of the planetary gear set with the planet carrier, wherein the synchronizing device is configured as follows: when the first output wheel is synchronized with the sun gear, the first output wheel is disengaged from the planet carrier; when the first output wheel is synchronized with the planet carrier, the first output wheel is disengaged from the sun gear.

3. The transmission assembly according to claim 2, characterized in that: It also includes a fixed part, and the synchronization device is used to achieve synchronization and disengagement between the sun gear and the fixed part; The planetary gear set also includes a first coaxial wheel and a second coaxial wheel; the first coaxial wheel is coaxial with and fixed to the sun wheel, and the second coaxial wheel is coaxial with and fixed to the planet carrier; the synchronizing device is connected to the sun wheel via the first coaxial wheel, and the synchronizing device is connected to the planet carrier via the second coaxial wheel.

4. The transmission assembly according to claim 3, characterized in that: Along the axial direction of the planetary gear set, the engine is located on a first side, and the first motor is located on a second side; The fixing portion, the first output wheel, the first coaxial wheel and the second coaxial wheel are located on the first side and are arranged in sequence from the first side to the second side; the synchronization device has two gear hubs arranged at intervals.

5. The transmission assembly according to claim 3, characterized in that: Along the axial direction of the planetary gear set, the engine is located on a first side, and the first motor is located on a second side; The fixing part and the first output wheel are located on the first side, and the second coaxial wheel is located on the second side; the fixing part, the first output wheel, the first coaxial wheel and the second coaxial wheel are arranged in sequence from the first side to the second side; the synchronization device has two gear hubs arranged at intervals.

6. The transmission assembly according to claim 1, characterized in that: It also includes a second output wheel, which is coaxially fixed with the first output wheel, and the second output wheel and the first output wheel are located on both sides of the planetary gear set; The synchronization device includes a first synchronizer and a second synchronizer, wherein the first synchronizer is used to synchronize and disengage the sun gear with the first output gear, and the second synchronizer is used to synchronize and disengage the planet carrier with the second output gear.

7. The transmission assembly according to any one of claims 1 to 6, characterized in that: A one-way clutch is also included, and the planet carrier is connected to the engine via the one-way clutch.

8. An automobile, characterized in that Comprising a transmission assembly as claimed in any one of claims 1 to 7.

9. A driving method, characterized in that: By using the transmission assembly according to any one of claims 1 to 7, the power of at least one of the engine, the first motor and the second motor is transmitted to the driven member.

10. The driving method according to claim 9, characterized in that: The steps of conveying include: The sun gear is synchronized with the planet carrier by using the synchronization device and the first output gear is disengaged from the planet carrier and the first output gear is disengaged from the sun gear, and the first gear direct drive mode is realized by using the engine; or / and The synchronization device is used to disengage the planet carrier from the first output wheel and synchronize the sun wheel with the fixed part of the transmission assembly, and the engine is used to realize the second gear direct drive mode.

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