Hybrid drive system for a vehicle and vehicle

Abstract

The application discloses a hybrid drive system of a vehicle and the vehicle, and the hybrid drive system comprises: an electric drive power assembly for driving one of front and rear axles of the vehicle; a hybrid power assembly for driving the other of the front and rear axles of the vehicle; the hybrid power assembly and the electric drive power assembly are configured to: control the hybrid power assembly to drive the vehicle, and / or control the electric drive power assembly to drive the vehicle according to a target gear, wherein the target gear comprises a first gear and a second gear. Thus, by cooperation of the electric drive power assembly and the hybrid power assembly, at least one of the hybrid power assembly and the electric drive power assembly can be reasonably selected to drive the vehicle according to a driving condition and a demand of a driver, an optimal working mode of the vehicle can be selected, the working efficiency of the hybrid drive system can be improved, the energy consumption of the hybrid drive system can be reduced, the power demand of the vehicle can be met when the vehicle is driven on different roads, and the escape ability and the climbing ability of the vehicle can be improved.

Description

Technical Field

[0001] This invention relates to the field of vehicles, and more particularly to a hybrid drive system for a vehicle and a vehicle having the hybrid drive system. Background Technology

[0002] In related technologies, existing vehicle drive systems have few operating modes and low efficiency. After the drive system is installed on the vehicle, it cannot adjust its operating mode according to driving conditions. This results in poor power performance and off-road capability, leading to poor vehicle traction and increased fuel consumption. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide a hybrid drive system for vehicles that can improve the working efficiency of the hybrid drive system, reduce its energy consumption, and enhance the vehicle's ability to get out of trouble and climb hills.

[0004] The present invention further proposes a vehicle.

[0005] The hybrid drive system for a vehicle according to the present invention comprises:

[0006] An electric drive system for driving one of the front axle and the rear axle of a vehicle, the electric drive system having at least a first gear and a second gear;

[0007] A hybrid powertrain is used to drive one of the front and rear axles of a vehicle.

[0008] The hybrid powertrain and the electric drive system are configured to: control the hybrid powertrain to drive the vehicle, and / or control the electric drive system to drive the vehicle in a target gear, wherein the target gear includes the first gear and the second gear.

[0009] According to the hybrid drive system of the present invention, by cooperating with the electric drive power assembly and the hybrid power assembly, at least one of the hybrid power assembly and the electric drive power assembly can be rationally selected to drive the vehicle according to the driving conditions and driver needs, and the working mode of the best matching vehicle can be selected, which can improve the working efficiency of the hybrid drive system and reduce the energy consumption of the hybrid drive system. The vehicle can meet the power demand of the vehicle when driving on different road conditions, and improve the vehicle's ability to get out of trouble and climb hills.

[0010] In some examples of the present invention, the electric drive powertrain and the hybrid powertrain are configured to: acquire first mode selection information and enter a first power drive mode corresponding to the first mode selection information, wherein the first power drive mode includes: a first driving mode, a second driving mode and a third driving mode.

[0011] In some examples of the present invention, when the first driving mode is entered, the electric drive powertrain and the hybrid powertrain are configured to: acquire second mode selection information and enter a second power drive mode corresponding to the second mode selection information, the second power drive mode including: sport mode, economy mode and comfort mode.

[0012] In some examples of the present invention, the first mode selection information is obtained on the first interface of the vehicle terminal, and the second mode selection information is obtained on the second interface of the vehicle terminal.

[0013] In some examples of the present invention, when the comfort mode is entered, the operating states of the electric drive powertrain and the hybrid powertrain are controlled based on the acquired vehicle speed information and required torque information.

[0014] In some examples of the present invention, the electric drive assembly includes:

[0015] First drive motor;

[0016] A first gear pair is connected to the first drive motor in a transmission manner;

[0017] The second gear pair is connected to the first drive motor in a transmission manner;

[0018] A first output shaft is selectively connected to a first gear pair and a second gear pair for transmission. When the first output shaft is driven by the first gear pair, the electric drive assembly is in a first gear position; when the first output shaft is driven by the second gear pair, the electric drive assembly is in a second gear position.

[0019] In some examples of the present invention, the speed ratio range of the first gear is A, which satisfies the relationship: 9≤A≤15.

[0020] In some examples of the present invention, the speed ratio range of the second gear is B, which satisfies the relationship: 18≤B≤25.

[0021] In some examples of the present invention, when the first output shaft is disconnected from both the first gear pair and the second gear pair, the electric drive assembly is in the third gear position. When the comfort mode is entered, the electric drive assembly automatically switches between the first gear position and the third gear position.

[0022] In some examples of the present invention, when the comfort mode is entered, the first gear, the second gear and the third gear of the electric drive assembly can be manually switched.

[0023] In some examples of the present invention, when the economy mode is entered, the hybrid powertrain is controlled to be in operation, and the electric drive powertrain is controlled to be in the third gear.

[0024] In some examples of the present invention, when the economy mode is entered, the electric drive assembly can be manually controlled to switch to the first gear or the second gear.

[0025] In some examples of the present invention, when the driving mode is entered, the hybrid powertrain is controlled to be in operation, and the electric drive powertrain is controlled to be in the first gear.

[0026] In some examples of the present invention, the hybrid powertrain includes:

[0027] engine;

[0028] A generator, which is connected to the engine in a transmission manner, and which is adapted to be connected to the vehicle's power battery;

[0029] A second output shaft is selectively connected to the engine.

[0030] The second drive motor is connected to the second output shaft via a transmission.

[0031] In some examples of the present invention, when the third driving mode is entered, the hybrid powertrain is controlled to operate, and the electric drive powertrain is controlled to be in the second gear.

[0032] In some examples of the present invention, when the third driving mode is entered, the electric drive powertrain can be manually controlled to switch to the first gear.

[0033] In some examples of the present invention, when entering a second driving mode, the hybrid powertrain is controlled to operate, and the electric drive powertrain is controlled to be in the first gear.

[0034] In some examples of the present invention, when entering the second driving mode, the electric drive powertrain can be manually controlled to switch to the second gear.

[0035] In some examples of the invention, the engine output shaft of the engine is arranged along the width direction of the vehicle.

[0036] In some examples of the present invention, the generator is disposed on one side of the engine output shaft, the first motor shaft of the generator is arranged along the width direction of the vehicle, the second drive motor is disposed on the other side of the engine output shaft, and the second motor shaft of the second drive motor is arranged along the width direction of the vehicle.

[0037] In some examples of the invention, the engine output shaft of the engine is arranged along the length of the vehicle.

[0038] In some examples of the present invention, the generator is disposed on one side of the engine output shaft, the first motor shaft of the generator is arranged along the length direction of the vehicle, the second drive motor is disposed on the other side of the engine output shaft, and the second motor shaft of the second drive motor is arranged along the length direction of the vehicle.

[0039] In some examples of the present invention, the electric drive powertrain and the hybrid powertrain share a common controller.

[0040] In some examples of the present invention, the electric drive powertrain is disposed on the rear axle of the vehicle; the hybrid powertrain is disposed on the front axle of the vehicle; the chassis between the front axle and the rear axle is used to house the vehicle's power battery, and the electric drive powertrain and the hybrid powertrain share the power battery.

[0041] The vehicle according to the present invention includes the drive system of the vehicle described above.

[0042] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0043] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0044] Figure 1 This is a schematic diagram of a hybrid drive system installed in a vehicle according to a first embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of a hybrid drive system installed in a vehicle according to a second embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of a hybrid powertrain of a hybrid drive system according to a third embodiment of the present invention;

[0047] Figure 4 This is a schematic diagram of a hybrid powertrain of a hybrid drive system according to a fourth embodiment of the present invention;

[0048] Figure 5 This is a schematic diagram of a hybrid drive system installed in a vehicle according to an embodiment of the present invention.

[0049] Figure label:

[0050] Hybrid drive system 1000;

[0051] Second connecting device 150; first connecting shaft 161; third gear 162; fourth gear 163; second connecting shaft 164;

[0052] Second drive shaft 171; Eleventh gear 172; Twelfth gear 173;

[0053] Electric drive assembly 200; first drive motor 210; third motor shaft 211; first gear 212;

[0054] First gear pair 222; First transmission gear 222a; Second transmission gear 222b;

[0055] First drive shaft 231; Second gear 232;

[0056] Second gear pair 221; Third transmission gear 221a; Fourth transmission gear 221b;

[0057] First output shaft 241; First output gear 242;

[0058] First connecting device 250; first connecting part 251; second connecting part 252; third connecting part 253;

[0059] Hybrid powertrain 100; Engine 110; Engine output shaft 111; Fifth gear 112; Tenth gear 113; Generator 120; First motor shaft 121; Ninth gear 122;

[0060] Second output shaft 141; Sixth gear 142; Seventh gear 143; Second output gear 144;

[0061] Second drive motor 130; Second motor shaft 131; Eighth gear 132;

[0062] Power battery 300; controller 410; second electronic control unit 420; first electronic control unit 430. Detailed Implementation

[0063] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0064] The following is for reference. Figures 1-5 A hybrid drive system 1000 for a vehicle according to an embodiment of the present invention is described, the hybrid drive system 1000 providing power for the driving of the vehicle.

[0065] like Figures 1-4 As shown, a hybrid drive system 1000 according to an embodiment of the present invention includes: an electric drive power assembly 200 and a hybrid power assembly 100. The electric drive power assembly 200 is used to drive one of the front axle and the rear axle of the vehicle, and the electric drive power assembly 200 has at least a first gear and a second gear. The hybrid power assembly 100 is used to drive the other of the front axle and the rear axle of the vehicle. The electric drive power assembly 200 can be driveably connected to one of the front drive axle (i.e., the front axle) and the rear drive axle (i.e., the rear axle) of the vehicle, and the hybrid power assembly 100 can be driveably connected to the other of the front drive axle and the rear drive axle. This application describes the system using the example of the electric drive power assembly 200 being driveably connected to the rear drive axle and the hybrid power assembly 100 being driveably connected to the front drive axle. The electric drive power assembly 200 can drive the rear wheels of the vehicle, and the hybrid power assembly 100 can drive the front wheels of the vehicle.

[0066] The hybrid powertrain 100 and the electric drive system 200 are configured to: control the hybrid powertrain 100 to drive the vehicle, and / or control the electric drive system 200 to drive the vehicle in a target gear, wherein the target gear includes a first gear and a second gear. It should be noted that the hybrid powertrain 100 can be controlled to drive the vehicle alone, or the electric drive system 200 can be controlled to drive the vehicle in a target gear, or both the hybrid powertrain 100 and the electric drive system 200 can be controlled to drive the vehicle simultaneously.

[0067] Specifically, when the vehicle is in motion, the user can choose to control the hybrid powertrain 100 or the electric drive powertrain 200 to drive the vehicle, or choose to control both the hybrid powertrain 100 and the electric drive powertrain 200 to drive the vehicle, based on road conditions and the driver's needs. This allows the hybrid drive system 1000 to operate in a mode that matches the road conditions. Selecting the optimal operating mode for the vehicle can improve the efficiency of the hybrid drive system 1000 and reduce its energy consumption. It can also meet the vehicle's power requirements under different road conditions, improve the power performance of the hybrid drive system 1000, enhance the vehicle's ability to get out of trouble and climb hills, and ensure that the operating mode of the hybrid drive system 1000 meets the driver's needs.

[0068] Furthermore, a control screen can be installed inside the vehicle, allowing users to control the hybrid powertrain 100 to drive the vehicle, or the electric drive powertrain 200 to drive the vehicle, or to control both the hybrid powertrain 100 and the electric drive powertrain 200 to drive the vehicle simultaneously, thereby enhancing the vehicle's technological feel.

[0069] Therefore, by working together with the electric drive powertrain 200 and the hybrid powertrain 100, at least one of the hybrid powertrain 100 and the electric drive powertrain 200 can be selected to drive the vehicle according to the driving conditions and the driver's needs. By selecting the working mode of the best matching vehicle, the working efficiency of the hybrid drive system 1000 can be improved, and the energy consumption of the hybrid drive system 1000 can be reduced. The vehicle's power demand can be met when driving on different road conditions, and the vehicle's ability to get out of trouble and climb hills can be improved.

[0070] In some embodiments of the present invention, the electric drive powertrain 200 and the hybrid powertrain 100 are configured to: acquire first mode selection information and enter a first power drive mode corresponding to the first mode selection information, the first power drive mode including: a first driving mode, a second driving mode and a third driving mode.

[0071] When the vehicle is driving on the road, the first driving mode can be selected, so that the hybrid drive system 1000 can work in the first driving mode, which can improve the working efficiency of the hybrid drive system 1000 and reduce the energy consumption of the hybrid drive system 1000.

[0072] When the vehicle is driving on sandy, snowy, cement roads, mountain rocks, ditches, or uphill roads, a second driving mode can be selected to make the hybrid drive system 1000 work in the second driving mode, which can improve the power performance of the hybrid drive system 1000, improve the vehicle's off-road performance, and improve the vehicle's ability to get out of trouble and climb hills.

[0073] When the vehicle's wheels are stuck in deep sand pits, deep mud pits, slipping, going up steep steps, or getting stuck in the middle of a ditch, the third driving mode can be selected, allowing the hybrid drive system 1000 to work in the third driving mode. This can improve the power performance of the hybrid drive system 1000, enhance the vehicle's off-road performance, and improve the vehicle's ability to get out of trouble and climb hills.

[0074] Specifically, users can select a first mode selection information through the control screen. After selecting the first mode selection information, the control screen interface will enter the first, second, and third driving modes corresponding to the first mode selection information. Users can rationally select any of the first, second, and third driving modes according to driving conditions and driver needs, so that the hybrid drive system 1000 meets the vehicle's working requirements. For example, when the vehicle is driving on a highway, the user can select the first driving mode, which will allow the hybrid drive system 1000 to operate in the first driving mode, improving the working efficiency of the hybrid drive system 1000 and reducing its energy consumption. When the vehicle is driving on sandy, snowy, paved, rocky, ravine, or hilly terrain, the user can select the second driving mode, which will allow the hybrid drive system 1000 to operate in the second driving mode, improving the power performance of the hybrid drive system 1000, enhancing the vehicle's off-road performance, and improving its ability to get out of trouble and climb hills. When the vehicle's wheels are stuck in deep sand pits, deep mud pits, slipping, going up steep steps, or getting stuck in the middle of a ditch, the third driving mode can be selected, allowing the hybrid drive system 1000 to work in the third driving mode. This can improve the power performance of the hybrid drive system 1000, enhance the vehicle's off-road performance, and improve the vehicle's ability to get out of trouble and climb hills.

[0075] It should be noted that when the hybrid drive system 1000 of this application is installed on a vehicle, it can enable the vehicle to simultaneously possess economy, power and off-road capability.

[0076] Therefore, by using the first power drive mode, which includes the first driving mode, the second driving mode, and the third driving mode, the working mode of the hybrid drive system 1000 can be reasonably selected according to the driving conditions and the driver's needs. The optimal working mode can be selected to meet the needs of different users, improve the working efficiency of the hybrid drive system 1000, reduce the energy consumption of the hybrid drive system 1000, improve the power performance of the hybrid drive system 1000, improve the off-road performance of the vehicle, and improve the vehicle's ability to get out of trouble and climb hills.

[0077] In some embodiments of the present invention, when entering a first driving mode, the electric drive powertrain 200 and the hybrid powertrain 100 are configured to: acquire second mode selection information and enter a second power drive mode corresponding to the second mode selection information, the second power drive mode including: sport mode, economy mode and comfort mode.

[0078] The user selects a first mode via the control screen. After selection, the control screen interface displays the corresponding first, second, and third driving modes. When the user selects the first driving mode, it retrieves the second mode selection information and enters the corresponding second power drive mode. The control screen then displays the corresponding sport, economy, and comfort modes. The user can choose any of these modes based on driving conditions and driver needs to ensure the hybrid drive system 1000 meets the vehicle's operational requirements. This setup allows for the selection of the optimal operating mode, satisfying the needs of different users, further improving the efficiency of the hybrid drive system 1000, and reducing its energy consumption.

[0079] In some embodiments of the present invention, first mode selection information is obtained on a first interface of the vehicle terminal, and second mode selection information is obtained on a second interface of the vehicle terminal. The vehicle terminal can be the control screen described in the above embodiments. The first mode selection information is located on the first interface of the vehicle terminal, and the second mode selection information is located on the second interface of the vehicle terminal. The user can select the first mode selection information on the first interface of the vehicle terminal. When entering the first driving mode, the vehicle terminal switches to the second interface, where the user can select the second mode selection information. Then, the hybrid drive system 1000 enters the second power drive mode corresponding to the second mode selection information. This setup achieves the effect of obtaining the first and second mode selection information on different interfaces, enhancing the vehicle's technological feel.

[0080] In some embodiments of the present invention, when entering comfort mode, the operating states of the electric drive system 200 and the hybrid powertrain 100 are controlled based on the acquired vehicle speed information and required torque information. The vehicle control unit can communicate with a vehicle speed sensor, and the control unit can store the required torque information. The vehicle speed sensor can transmit the detected vehicle speed information to the control unit, enabling the control unit to acquire the vehicle speed information. When entering comfort mode, the control unit controls the operating states of the electric drive system 200 and the hybrid powertrain 100 based on the acquired vehicle speed information and required torque information, achieving an optimal matching operating mode for the electric drive system 200 and the hybrid powertrain 100. This ensures that the electric drive system 200 and the hybrid powertrain 100 meet usage requirements, thereby making the vehicle ride more comfortable and improving the user's riding experience.

[0081] In some embodiments of the present invention, such as Figure 1 and Figure 2As shown, the electric drive assembly 200 may include: a first drive motor 210, a first gear pair 222, a second gear pair 221, and a first output shaft 241. The first gear pair 222 is driven by the first drive motor 210, the second gear pair 221 is driven by the first drive motor 210, and the first output shaft 241 is selectively driven by both the first gear pair 222 and the second gear pair 221. When the first output shaft 241 is driven by the first gear pair 222, the electric drive assembly 200 is in the first gear position; when the first output shaft 241 is driven by the second gear pair 221, the electric drive assembly 200 is in the second gear position.

[0082] Specifically, when the first output shaft 241 is in operation with the first gear pair 222, the first output shaft 241 is disconnected from the second gear pair 221; conversely, when the first output shaft 241 is in operation with the second gear pair 221, the first output shaft 241 is disconnected from the first gear pair 222. Furthermore, the speed ratio of the first gear pair 222 is less than the speed ratio of the second gear pair 221, meaning the speed ratio of the first gear is less than the speed ratio of the second gear. A first output gear 242 can be mounted on the first output shaft 241. The first output gear 242 is adapted to be connected to the power input gear of the rear drive axle. When the first output shaft 241 rotates, it drives the first output gear 242 to rotate, thereby achieving the effect of driving the rear wheels to rotate. When the first output shaft 241 is connected to the first gear pair 222, the electric drive power assembly 200 operates in the first gear position. When the first output shaft 241 is connected to the second gear pair 221, the electric drive power assembly 200 operates in the second gear position. This configuration allows the electric drive power assembly 200 to have multiple operating gears. The operating gear of the electric drive power assembly 200 can be reasonably selected based on the obtained vehicle speed information, required torque information, driving conditions, and driver needs, so that the gear electric drive power assembly 200 can meet the driving needs of the vehicle.

[0083] It should be noted that when the first output shaft 241 is disconnected from both the first gear pair 222 and the second gear pair 221, the electric drive force assembly 200 is in neutral, and at this time the electric drive force assembly 200 does not transmit torque to the rear drive axle.

[0084] In some embodiments of the present invention, such as Figure 1 and Figure 2As shown, the electric drive assembly 200 further includes: a first drive shaft 231; a first gear pair 222 may include a first drive gear 222a and a second drive gear 222b, which mesh; the first drive gear 222a is fixed to the first drive shaft 231; a first gear 212 is fixed to the third motor shaft 211 of the first drive motor 210; a second gear 232 is fixed to the first drive shaft 231, which meshes with the first gear 212; the second gear pair 221 may include a third drive gear 221a and a fourth drive gear 221b, which mesh; the third drive gear 221a is fixed to the first drive shaft 231.

[0085] Furthermore, such as Figure 1 and Figure 2 As shown, the electric drive assembly 200 may further include: a first engagement device 250, which can be a synchronizer; a first output shaft 241 passing through a second transmission gear 222b and a fourth transmission gear 221b, and the first output shaft 241 having a first connecting portion 251 located between the second transmission gear 222b and the fourth transmission gear 221b; the fourth transmission gear 221b having a second connecting portion 252; and the second transmission gear 222b having a third connecting portion 253, which is moved by the second engagement device 150 to allow the first connecting portion to move. 251 is selectively connected to the second connecting part 252 and the third connecting part 253, thereby achieving the effect of selectively connecting the first output shaft 241 to the first gear pair 222 and the second gear pair 221, or achieving the effect of not connecting the first output shaft 241 to either the first gear pair 222 or the second gear pair 221. At this time, the electric drive force assembly 200 is in neutral, thereby achieving the effect of controlling the working gear of the electric drive force assembly 200 through the first engagement device 250, and controlling the electric drive force assembly 200 to switch between the first gear, the second gear and neutral.

[0086] In some embodiments of the present invention, the speed ratio range of the first gear is A, satisfying the relationship: 9≤A≤15. This can also be understood as the speed ratio range of the first gear pair 222 being A, satisfying the relationship: 9≤A≤15. When the electric drive assembly 200 operates in the first gear, by setting the speed ratio range of the first gear to 9-15, the electric drive assembly 200 can be optimally matched to the vehicle's operation.

[0087] In some embodiments of the present invention, the speed ratio range of the second gear is B, satisfying the relationship: 18 ≤ B ≤ 25. This can also be understood as the speed ratio range of the second gear pair 221 being B, satisfying the relationship: 18 ≤ B ≤ 25. When the electric drive assembly 200 operates in the second gear, by setting the speed ratio range of the second gear to 18-25, the electric drive assembly 200 can be optimally matched to the vehicle's operation.

[0088] In some embodiments of the present invention, when the first output shaft 241 is disconnected from both the first gear pair 222 and the second gear pair 221, the electric drive power assembly 200 is in the third gear position (i.e., neutral in the above embodiments). When entering comfort mode, the electric drive power assembly 200 automatically switches between the first gear position and the third gear position. Specifically, when entering comfort mode, the electric drive power assembly 200 can automatically switch between the first gear position and the third gear position to select the optimal matching operating mode, thereby enabling the electric drive power assembly 200 to meet the vehicle's driving needs, further improving the working efficiency of the hybrid drive system 1000, further reducing the energy consumption of the hybrid drive system 1000, and further improving the power performance of the hybrid drive system 1000.

[0089] In some embodiments of the present invention, when entering comfort mode, the first, second, and third gears of the electric drive assembly 200 can be manually switched. That is, when entering comfort mode, the user can manually switch the electric drive assembly 200 to one of the first, second, and third gears. Specifically, when entering comfort mode, the user can control the electric drive assembly 200 to switch to one of the first, second, and third gears through the interface of the in-vehicle terminal, thereby allowing the electric drive assembly 200 to meet the needs of different users and further improve vehicle comfort.

[0090] In some embodiments of the present invention, when entering the economy mode, the hybrid powertrain 100 is controlled to operate, and the electric drive assembly 200 is controlled to be in the third gear. Specifically, when entering the economy mode, the vehicle's control unit can control the hybrid powertrain 100 to operate, and the control unit can control the electric drive assembly 200 to be in the third gear via the first engagement device 250. This allows the electric drive assembly 200 to meet the needs of different users, further improving the hybrid drive system 1000 and the vehicle's economy.

[0091] In some embodiments of the present invention, when entering the economy mode, the electric drive system 200 can be manually controlled to switch to the first gear or the second gear. Specifically, when entering the economy mode, the user can control the electric drive system 200 to switch to the first gear or the second gear through the interface of the vehicle terminal, thereby allowing the electric drive system 200 to meet the driving needs of different users and further improving the hybrid drive system 1000 and the vehicle's economy.

[0092] In some embodiments of the present invention, when entering Sport mode, the hybrid powertrain 100 is controlled to operate, and the electric drive powertrain 200 is controlled to be in the first gear. Specifically, when entering Sport mode, the vehicle's control unit can control the hybrid powertrain 100 to operate, and the user can control the electric drive powertrain 200 to switch to the first gear through the vehicle's onboard terminal interface. This allows the electric drive powertrain 200 to meet the driving needs of different users and ensure the power of the electric drive powertrain 200.

[0093] In some embodiments of the present invention, when entering the third driving mode, the hybrid powertrain 100 is controlled to operate, and the electric drive powertrain 200 is controlled to be in the second gear. Specifically, when entering the third driving mode, the vehicle's control unit can control the hybrid powertrain 100 to operate, and the user can control the electric drive powertrain 200 to switch to the second gear through the vehicle's onboard terminal interface. This allows the electric drive powertrain 200 to operate at a high-speed gear ratio, providing sufficient output power to enhance the power performance of the hybrid drive system 1000, further improving the vehicle's off-road performance, and further enhancing its ability to overcome obstacles and climb hills.

[0094] In some embodiments of the present invention, when entering the third driving mode, the electric drive assembly 200 can be manually controlled to switch to the first gear. Specifically, when entering the third driving mode, the user can control the electric drive assembly 200 to switch to the first gear through the interface of the vehicle terminal, thus ensuring the output power of the electric drive assembly 200 and meeting the driving needs of different users.

[0095] In some embodiments of the present invention, when entering the second driving mode, the hybrid powertrain 100 is controlled to operate, and the electric drive powertrain 200 is controlled to be in the first gear. Specifically, when entering the second driving mode, the vehicle's control unit can control the hybrid powertrain 100 to operate, and the control unit can control the electric drive powertrain 200 to switch to the first gear. This configuration can improve the vehicle's off-road performance, enhancing its ability to get out of trouble and climb hills.

[0096] In some embodiments of the present invention, when entering the second driving mode, the electric drive powertrain 200 can be manually controlled to switch to the second gear. Specifically, when entering the second driving mode, after the electric drive powertrain 200 has switched to the first gear, the user can control the electric drive powertrain 200 to switch to the second gear through the interface of the vehicle terminal. This setting can further enhance the power performance of the hybrid drive system 1000, further improve the vehicle's off-road performance, and further enhance the vehicle's ability to get out of trouble and climb hills, thereby enabling the electric drive powertrain 200 to meet the driving needs of different users.

[0097] In some embodiments of the present invention, such as Figures 1-4 As shown, the hybrid powertrain 100 may include: an engine 110, a generator 120, a second output shaft 141, and a second drive motor 130. The generator 120 is driveably connected to the engine 110 and is adapted to connect to the vehicle's power battery 300. The second output shaft 141 is selectively driveably connected to the engine 110, and the second drive motor 130 is driveably connected to the second output shaft 141. When the generator 120 is connected to the power battery 300, the electricity generated by the generator 120 can be stored in the power battery 300, thereby charging the power battery 300. After the second output shaft 141 is driveably connected to the engine 110, when the engine 110 is operating, the power of the engine 110 can be transmitted to the second output shaft 141, which can drive the front wheels of the vehicle to rotate. When the second output shaft 141 is disconnected from the engine 110, the power of the engine 110 cannot be transmitted to the second output shaft 141. The second drive motor 130 is connected to the second output shaft 141. When the second drive motor 130 is working, the power of the second drive motor 130 can be transmitted to the front wheels through the second output shaft 141 to drive the front wheels of the vehicle to rotate.

[0098] like Figure 1 As shown, according to a first embodiment of the present invention, the hybrid powertrain 100 may include: an engine 110, a generator 120, a second output shaft 141, and a second drive motor 130. A second output gear 144 may be provided on the second output shaft 141. The second output gear 144 is adapted to be connected to the power input gear of the front drive axle. When the second output shaft 141 rotates, it can drive the second output gear 144 to rotate, thereby achieving the effect of driving the front wheels to rotate.

[0099] The hybrid powertrain 100 may further include a second engagement device 150 through which the engine 110 can be selectively connected to a second output shaft 141. The second engagement device 150 may include a selectively engaging first engagement portion and a second engagement portion, the first engagement portion being connected to the engine output shaft 111 of the engine 110, and the second engagement portion being connected to the second output shaft 141. Further, the first engagement portion is connected to a first connecting shaft 161, which is fixedly equipped with a third gear 162; the second engagement portion is connected to a second connecting shaft 164, which is fixedly equipped with a fourth gear 163; the engine output shaft 111 of the engine 110 has a fifth gear 112; the second output shaft 141 has a sixth gear 142; the third gear 162 meshes with the fifth gear 112; and the fourth gear 163 meshes with the sixth gear 142.

[0100] The second output shaft 141 also has a seventh gear 143, and the second motor shaft 131 of the second drive motor 130 has an eighth gear 132. The seventh gear 143 and the eighth gear 132 mesh. Through the meshing of the seventh gear 143 and the eighth gear 132, when the second drive motor 130 is working, its power can be transmitted to the second output shaft 141, thus enabling the second drive motor 130 to drive the vehicle. The first motor shaft 121 of the generator 120 has a ninth gear 122, which meshes with the fifth gear 112. Through the meshing of the ninth gear 122 and the fifth gear 112, when the engine 110 is working, the engine 110 can drive the generator 120 to generate electricity.

[0101] like Figure 2 As shown, according to a second embodiment of the present invention, the hybrid powertrain 100 may include: an engine 110, a generator 120, a second output shaft 141, and a second drive motor 130. A second output gear 144 may be provided on the second output shaft 141. The second output gear 144 is adapted to be connected to the power input gear of the front drive axle. When the second output shaft 141 rotates, it can drive the second output gear 144 to rotate, thereby achieving the effect of driving the front wheels to rotate.

[0102] The hybrid powertrain 100 may further include a second engagement device 150, through which the engine 110 can be selectively connected to a second output shaft 141. The second engagement device 150 may include a first engagement portion and a second engagement portion. The first engagement portion is fixed to the engine output shaft 111 of the engine 110, and the second engagement portion is connected to a fourth gear 163. The second output shaft 141 has a sixth gear 142, with the fourth gear 163 meshing with the sixth gear 142. The second motor shaft 131 of the second drive motor 130 has an eighth gear 132, which meshes with the fourth gear 163. When the second drive motor 130 is operating, it can transmit power to the second output shaft 141. The engine output shaft 111 is fixed with a fifth gear 112, and the first motor shaft 121 of the generator 120 is fixed with a ninth gear 122, which meshes with the fifth gear 112. When the engine 110 is operating, it can drive the generator 120 to generate electricity. The main differences between the hybrid powertrain 100 of the second embodiment of the present invention and the hybrid powertrain 100 of the first embodiment of the present invention are: the setting position and method of the second engagement device 150 are different, and the structure of the second output shaft 141 is different.

[0103] like Figure 3As shown, the hybrid powertrain 100 of the third embodiment of the present invention differs from the hybrid powertrain 100 of the first embodiment of the present invention mainly in that: a tenth gear 113 is provided on the engine output shaft 111, and the tenth gear 113 meshes between the ninth gear 122 and the fourth gear 163 on the first motor shaft 121 of the generator 120.

[0104] like Figure 4 As shown, according to the fourth embodiment of the present invention, the hybrid powertrain 100 may include: an engine 110, a generator 120, a second output shaft 141, and a second drive motor 130. A second output gear 144 may be provided on the second output shaft 141. The second output gear 144 is adapted to be connected to the power input gear of the front drive axle. When the second output shaft 141 rotates, it can drive the second output gear 144 to rotate, thereby achieving the effect of driving the front wheels to rotate.

[0105] The hybrid powertrain 100 may further include a second engagement device 150 and a second drive shaft 171, through which the engine 110 may be selectively connected to a second output shaft 141 via the second engagement device 150. The second engagement device 150 may include a first engagement portion and a second engagement portion. The first engagement portion is fixed to the engine output shaft 111 of the engine 110, and the second engagement portion is connected to a fourth gear 163. The second drive shaft 171 is fixed with an eleventh gear 172 and a twelfth gear 173. The second output shaft 141 has a sixth gear 142, and the twelfth gear 173 meshes with the sixth gear 142. The second motor shaft 131 of the second drive motor 130 has an eighth gear 132, which meshes with the eleventh gear 172. The eleventh gear 172 also meshes with the fourth gear 163. The eleventh gear 172 meshes between the fourth gear 163 and the eighth gear 132. When the second drive motor 130 is operating, it can sequentially transmit power to the second drive shaft 171 and the second output shaft 141. The engine output shaft 111 is fixed with a fifth gear 112, and the first motor shaft 121 of the generator 120 is fixed with a ninth gear 122. The ninth gear 122 and the fifth gear 112 mesh, and the engine 110 can drive the generator 120 to generate electricity when it is working.

[0106] It should be noted that the electric drive power assembly 200 in the hybrid drive system 1000 of the first embodiment to the hybrid drive system 1000 of the fourth embodiment has the same structure, only the structure of the hybrid power assembly 100 is different.

[0107] In some embodiments of the present invention, such as Figure 2As shown, the engine output shaft 111 of the engine 110 is arranged along the width direction of the vehicle to achieve the effect of transversely arranging the engine 110, so that the hybrid powertrain 100 can be adapted to the installation space of the vehicle.

[0108] In some embodiments of the present invention, such as Figure 2 As shown, the generator 120 is located on one side of the engine output shaft 111, and the first motor shaft 121 of the generator 120 is arranged along the width direction of the vehicle. The second drive motor 130 is located on the other side of the engine output shaft 111, and the second motor shaft 131 of the second drive motor 130 is arranged along the width direction of the vehicle. Furthermore, the engine output shaft 111, the first motor shaft 121, and the second motor shaft 131 are parallel to each other. This achieves the effect of transversely arranging the engine 110, generator 120, and second drive motor 130, making the hybrid powertrain 100 more compatible with the vehicle's installation space.

[0109] In some embodiments of the present invention, such as Figure 1 , Figure 3 and Figure 4 As shown, the engine output shaft 111 of the engine 110 is arranged along the length of the vehicle to achieve the effect of longitudinally arranging the engine 110, so that the hybrid powertrain 100 can be adapted to the vehicle's installation space.

[0110] In some embodiments of the present invention, such as Figure 1 , Figure 3 and Figure 4 As shown, the generator 120 is located on one side of the engine output shaft 111, and the first motor shaft 121 of the generator 120 is arranged along the length of the vehicle. The second drive motor 130 is located on the other side of the engine output shaft 111, and the second motor shaft 131 of the second drive motor 130 is arranged along the length of the vehicle. Furthermore, the engine output shaft 111, the first motor shaft 121, and the second motor shaft 131 are parallel to each other. This achieves the effect of longitudinally arranging the engine 110, generator 120, and second drive motor 130, making the hybrid powertrain 100 more compatible with the vehicle's installation space.

[0111] In some embodiments of the present invention, such as Figure 1 and Figure 2The electric drive powertrain 200 and the hybrid powertrain 100 share a controller 410. The controller 410 can be the control unit described in the above embodiments. The controller 410 is communicatively connected to the generator 120, the second drive motor 130, and the first drive motor 210. The controller 410 can control the operation of the generator 120, the second drive motor 130, and the first drive motor 210. By sharing a single controller 410 between the electric drive powertrain 200 and the hybrid powertrain 100, the number of controllers 410 can be reduced, thereby simplifying the structure of the hybrid drive system 1000.

[0112] Furthermore, the controller 410 can be connected to the first drive motor 210 via the first electronic control unit 430, and the controller 410 controls the operation of the first drive motor 210 via the first electronic control unit 430. The controller 410 can also be connected to the generator 120 and the second drive motor 130 via the second electronic control unit 420, and the controller 410 controls the operation of the second drive motor 130 and the generator 120 via the second electronic control unit 420.

[0113] In some embodiments of the present invention, the electric drive power assembly 200 is disposed on the rear axle of the vehicle, and the hybrid power assembly 100 is disposed on the front axle of the vehicle. Alternatively, the electric drive power assembly 200 can be understood as being disposed on the rear drive axle of the vehicle, and the hybrid power assembly 100 as being disposed on the front drive axle of the vehicle. The chassis between the front and rear axles is used to house the vehicle's power battery 300. The electric drive power assembly 200 and the hybrid power assembly 100 share the power battery 300. The first drive motor 210 and the engine 110 are both connected to the power battery 300. When the first drive motor 210 generates electricity, it can store the electricity in the power battery 300. When the engine 110 generates electricity, it can also store the electricity in the power battery 300. The power battery 300 can also supply power to the first drive motor 210 to enable the first drive motor 210 to operate normally.

[0114] It should be noted that the electric drive assembly 200 of this application can switch between three gears, namely the first gear, the second gear and the third gear. The first gear is the low gear (small speed ratio), the second gear is the high gear (large speed ratio), and the third gear is neutral.

[0115] The electric drive assembly 200 has five operating modes: the first mode is when the electric drive assembly 200 is in the first gear; the second mode is when the electric drive assembly 200 is in the second gear; the third mode is when the electric drive assembly 200 is in the third gear, i.e., neutral, and does not transmit torque; the fourth mode is the first gear feedback mode, where the rear wheel rotation drives the first drive motor 210 to work, feeding power back from the wheel end to the first drive motor 210, and the first drive motor 210 generates electricity to the power battery 300; the fifth mode is the second gear feedback mode, where the rear wheel rotation drives the first drive motor 210 to work, feeding power back from the wheel end to the first drive motor 210, and the first drive motor 210 generates electricity to the power battery 300.

[0116] The hybrid powertrain 100 has six operating modes:

[0117] The first mode is the direct drive mode, in which the second engagement device 150 is disconnected, and the engine 110 directly drives the vehicle alone. In this mode, the second drive motor 130 does not drive the vehicle.

[0118] The second mode is the series mode. The second coupling device 150 is disconnected, and the second drive motor 130, engine 110 and generator 120 all work. The second drive motor 130 drives the vehicle to move, the engine 110 drives the generator 120 to generate electricity, and the generator 120 then directly outputs the current to the second drive motor 130.

[0119] The third mode is the power generation mode. The second engagement device 150 is disconnected, the vehicle is stopped, and the engine 110 drives the generator 120 to generate electricity (the vehicle is stopped, and the electric drive assembly 200 does not work).

[0120] The fourth mode is the parallel mode, in which the second engagement device 150 is engaged, the second drive motor 130 and the engine 110 drive the vehicle simultaneously, and the generator 120 has no power (follow-up).

[0121] The fifth mode is the pure electric mode, in which the second engagement device 150 is disconnected, the second drive motor 130 directly drives the vehicle, and the engine 110 does not participate in driving the vehicle.

[0122] The sixth mode is the power feeding mode, where the second engagement device 150 is disconnected, and the second drive motor 130 feeds back power to the power battery 300 through the reverse drag of the wheel end.

[0123] The hybrid drive system 1000 of this application can switch between multiple working modes. The vehicle can select the best matching working mode according to the needs of vehicle speed, torque and driver, so as to meet the needs of different users.

[0124] When the vehicle is climbing hills at low speeds or getting out of trouble, the electric drive powertrain 200 switches to the first gear, which has a large speed ratio and torque. When the vehicle is driving on highways or other normal road conditions, the electric drive powertrain 200 switches to the second gear, which has a smaller speed ratio and torque, and the electric drive powertrain 200 is highly efficient. When the hybrid drive system 1000 is installed on a four-wheel drive vehicle, if the hybrid powertrain 100 has sufficient power, the electric drive powertrain 200 can switch to the third gear, eliminating braking losses of the electric drive powertrain 200 and further improving efficiency. The hybrid drive system 1000 of this application has diversified driving modes, allowing free switching between multiple driving modes to meet the different needs of different environments, different drivers, and different road conditions, thus achieving a variety of driving pleasures.

[0125] By installing the hybrid drive system 1000 of this application on a vehicle, the front axle and rear axle of the vehicle can be driven simultaneously, which makes the vehicle powerful, accelerates in a short time, reduces fuel consumption, and increases the vehicle's driving range.

[0126] The vehicle according to embodiments of the present invention includes the drive system described in the above embodiments. It can rationally select the operating mode of the hybrid drive system 1000 according to driving conditions and driver needs, selecting the optimal matching operating mode, which can improve the working efficiency of the hybrid drive system 1000, reduce its energy consumption, enhance its power performance, improve its off-road performance, and improve its ability to get out of trouble and climb hills.

[0127] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0128] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A hybrid drive system for a vehicle, characterized in that, include: An electric drive system for driving one of the front and rear axles of a vehicle, the electric drive system having at least a first gear and a second gear; A hybrid powertrain is used to drive one of the front and rear axles of a vehicle. The hybrid powertrain and the electric drive system are configured to: control the hybrid powertrain to drive the vehicle, and / or control the electric drive system to drive the vehicle in a target gear, wherein the target gear includes the first gear and the second gear; The electric drive powertrain and the hybrid powertrain are configured to: acquire first mode selection information and enter a first power drive mode corresponding to the first mode selection information, wherein the first power drive mode includes: a first driving mode, a second driving mode and a third driving mode; When the first driving mode is entered, the electric drive powertrain and the hybrid powertrain are configured to: acquire second mode selection information and enter a second power drive mode corresponding to the second mode selection information, the second power drive mode including: sport mode, economy mode and comfort mode; The electric drive assembly includes: a first drive motor; a first gear pair, which is driveably connected to the first drive motor; a second gear pair, which is driveably connected to the first drive motor; and a first output shaft, which is selectively driveably connected to the first gear pair and the second gear pair, wherein when the first output shaft is driven by the first gear pair, the electric drive assembly is in the first gear position; and when the first output shaft is driven by the second gear pair, the electric drive assembly is in the second gear position. When the first output shaft is disconnected from both the first gear pair and the second gear pair, the electric drive power assembly is in the third gear position. When entering the comfort mode, the electric drive power assembly automatically switches between the first gear position and the third gear position. When entering the economy mode, the hybrid power assembly is controlled to be in working state, and the electric drive power assembly is controlled to be in the third gear position. When entering the sport mode, the hybrid power assembly is controlled to be in working state, and the electric drive power assembly is controlled to be in the first gear position.

2. The hybrid drive system for a vehicle according to claim 1, characterized in that, The first mode selection information is obtained on the first interface of the vehicle terminal, and the second mode selection information is obtained on the second interface of the vehicle terminal.

3. The hybrid drive system for a vehicle according to claim 1, characterized in that, When the comfort mode is entered, the operating state of the electric drive system and the hybrid powertrain is controlled based on the acquired vehicle speed information and required torque information.

4. The hybrid drive system for a vehicle according to claim 1, characterized in that, The speed ratio range of the first gear is A, which satisfies the relationship: 9≤A≤15.

5. The hybrid drive system for a vehicle according to claim 1, characterized in that, The speed ratio range of the second gear is B, which satisfies the relationship: 18≤B≤25.

6. The hybrid drive system for a vehicle according to claim 1, characterized in that, When the comfort mode is entered, the first gear, the second gear, and the third gear of the electric drive assembly can be manually switched.

7. The hybrid drive system for a vehicle according to claim 1, characterized in that, When the economy mode is entered, the electric drive assembly can be manually controlled to switch to the first gear or the second gear.

8. The hybrid drive system for a vehicle according to claim 1, characterized in that, The hybrid powertrain includes: engine; A generator, which is connected to the engine in a transmission manner, and which is adapted to be connected to the vehicle's power battery; A second output shaft is selectively connected to the engine. The second drive motor is connected to the second output shaft via a transmission.

9. The hybrid drive system for a vehicle according to claim 1, characterized in that, When the third driving mode is entered, the hybrid powertrain is controlled to operate, and the electric drive powertrain is controlled to be in the second gear.

10. The hybrid drive system for a vehicle according to claim 8, characterized in that, When entering the third driving mode, the electric drive powertrain can be manually switched to the first gear.

11. The hybrid drive system for a vehicle according to claim 1, characterized in that, When the second driving mode is entered, the hybrid powertrain is controlled to operate, and the electric drive powertrain is controlled to be in the first gear.

12. The hybrid drive system for a vehicle according to claim 11, characterized in that, When entering the second driving mode, the electric drive powertrain can be manually switched to the second gear.

13. The hybrid drive system for a vehicle according to claim 8, characterized in that, The engine output shaft of the engine is arranged along the width direction of the vehicle.

14. The hybrid drive system for a vehicle according to claim 13, characterized in that, The generator is located on one side of the engine output shaft, and the first motor shaft of the generator is arranged along the width direction of the vehicle. The second drive motor is located on the other side of the engine output shaft, and the second motor shaft of the second drive motor is arranged along the width direction of the vehicle.

15. The hybrid drive system for a vehicle according to claim 8, characterized in that, The engine output shaft of the engine is arranged along the length of the vehicle.

16. The hybrid drive system for a vehicle according to claim 15, characterized in that, The generator is located on one side of the engine output shaft, and the first motor shaft of the generator is arranged along the length direction of the vehicle. The second drive motor is located on the other side of the engine output shaft, and the second motor shaft of the second drive motor is arranged along the length direction of the vehicle.

17. The hybrid drive system of the vehicle according to any one of claims 1-16, characterized in that, The electric drive system and the hybrid power system share a common controller.

18. The hybrid drive system of the vehicle according to any one of claims 1-16, characterized in that, The electric drive system is located on the rear axle of the vehicle; The hybrid powertrain is mounted on the front axle of the vehicle; The chassis between the front axle and the rear axle is used to house the vehicle's power battery, which is shared by the electric drive system and the hybrid power system.

19. A vehicle, characterized in that, Includes the drive system of the vehicle according to any one of claims 1-18.

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