Hybrid power assembly, control method and control device thereof, vehicle and storage medium

Abstract

The invention provides a hybrid power assembly, a control method and device of the hybrid power assembly, a vehicle and a storage medium. The vehicle comprises an axle, and the hybrid power assembly comprises a transmission assembly, a first engine, a second engine, a first motor and a second motor. The transmission assembly comprises a first output shaft, a first transmission shaft and a second transmission shaft. The output end of the second engine is connected with the second transmission shaft; the first motor is connected with the first output shaft and the axle. The second motor is in transmission connection with the first transmission shaft and the second transmission shaft; and under the condition that the speed of the vehicle reaches a first threshold value, the second motor adjusts the rotating speed of the first engine and the rotating speed of the second engine through the transmission assembly, and under the condition that the rotating speed of the first engine and the rotating speed of the second engine reach a second threshold value, the first engine and the second engine are started. The double engines are adopted as main power sources to drive the vehicle, the fuel dynamic property is improved, the engine load is reduced, and the fuel economy is improved.

Description

Technical Field

[0001] The present invention relates to the field of hybrid technology, and in particular to a hybrid power component and a control method, a control device, a vehicle and a storage medium thereof. Background Art

[0002] At present, in the relevant technology, large-scale mining dump trucks generally adopt a power system of a single engine + a multi-speed transmission, and the two power systems are mechanically coupled to output, so that when one power system shifts gears, the other system outputs power, thereby ensuring uninterrupted power shifting. However, the engine of the vehicle needs high power output under heavy-load uphill conditions, and the power of a single engine is limited, which easily leads to insufficient power. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, a first aspect of the present invention provides a hybrid power assembly.

[0005] A second aspect of the present invention provides a vehicle.

[0006] A third aspect of the present invention provides a control method for a hybrid power assembly.

[0007] A fourth aspect of the present invention provides a control device for a hybrid power assembly.

[0008] A fifth aspect of the present invention provides a readable storage medium.

[0009] In view of this, the first aspect of the present invention provides a hybrid power assembly, wherein the vehicle comprises an axle, and the hybrid power assembly comprises a transmission assembly, a first engine, a second engine, a first motor and a second motor. The transmission assembly comprises a first output shaft, a first transmission shaft and a second transmission shaft, wherein the first transmission shaft is in driving connection with the first output shaft, and the second transmission shaft is in driving connection with the first output shaft; the output end of the first engine is connected to the first transmission shaft; the output end of the second engine is connected to the second transmission shaft; the first motor is connected to the first output shaft and the axle respectively; the second motor is in driving connection with the first transmission shaft and the second transmission shaft respectively; when the vehicle is started, the second motor transmits power to the first motor through the transmission assembly, and the power transmitted by the transmission assembly is coupled with the power of the first motor to drive the axle; when the speed of the vehicle reaches a first threshold, the second motor adjusts the speed of the first engine and the second engine through the transmission assembly, and when the speed of the first engine and the second engine reaches a second threshold, the first engine and the second engine are started.

[0010] In this technical solution, the vehicle includes an axle, and the hybrid power assembly includes a transmission assembly, a first engine, a second engine, a first motor and a second motor. The transmission assembly includes a first output shaft, a first transmission shaft and a second transmission shaft, the first transmission shaft is transmission-connected to the first output shaft, and the second transmission shaft is transmission-connected to the first output shaft, so as to realize the installation of the first transmission shaft, the second transmission shaft and the first output shaft, and when power is transmitted to the first transmission shaft and the second transmission shaft, the first transmission shaft and the second transmission shaft can transmit power to the first output shaft for output. The output end of the first engine is connected to the first transmission shaft; the output end of the second engine is connected to the second transmission shaft, so as to realize the installation of the first engine and the second engine, so that the first engine and the second engine can transmit power to the first transmission shaft and the second transmission shaft. The first motor is respectively connected to the first output shaft and the axle, so that the first motor can receive the power transmitted by the first output shaft, and the first motor can drive the axle, so that the vehicle can run. The second motor is respectively transmission-connected to the first transmission shaft and the second transmission shaft, so that the second motor can drive the first transmission shaft and the second transmission shaft to move, and then output the power through the first output shaft. When the vehicle starts, the second motor transmits power to the first motor through the transmission assembly. The power transmitted by the transmission assembly is coupled with the power of the first motor to drive the axle. Therefore, when the vehicle starts, the second motor can assist the first motor in driving to ensure the vehicle's ability to get out of trouble. When the speed of the vehicle reaches the first threshold, the second motor adjusts the speed of the first engine and the second engine through the transmission assembly. When the speed of the first engine and the second engine reaches the second threshold, the first engine and the second engine are started. Therefore, after the vehicle starts, the first engine and the second engine are controlled to start, so that the first engine and the second engine can transmit power to the transmission assembly. The transmission assembly can couple the power of the first engine and the second engine and transmit it to the first motor, so that the first engine and the second engine drive the vehicle to move at the same time, and the first motor and the second motor assist. Therefore, the present application sets the first engine and the second engine to be connected to the transmission assembly, so that the transmission assembly couples the power of the first engine and the second engine to drive the vehicle, that is, the dual engines are used as the main power source to drive the vehicle, improve fuel power, reduce engine load, and improve fuel economy.

[0011] In addition, the hybrid power assembly in the above technical solution provided by the present invention may also have the following additional technical features:

[0012] In a technical solution of the present invention, optionally, the transmission assembly further includes a driving gear, a first driven gear and a second driven gear. The driving gear is arranged on the first output shaft; the first driven gear is arranged on the first transmission shaft and meshes with the driving gear; the second driven gear is arranged on the second transmission shaft and meshes with the driving gear.

[0013] In this technical solution, the transmission assembly also includes a driving gear, a first driven gear and a second driven gear. The driving gear is arranged on the first output shaft to realize the installation of the driving gear. The first driven gear is arranged on the first transmission shaft and meshes with the driving gear to realize the installation of the first driven gear. The second driven gear is arranged on the second transmission shaft and meshes with the driving gear to realize the installation of the second driven gear. By arranging the driving gear, the first driven gear and the second driven gear, power can be transmitted between the first output shaft and the first transmission shaft, and between the first output shaft and the second transmission shaft, so as to transmit the power of the first engine, the second engine and the second motor to the first output shaft for output.

[0014] In a technical solution of the present invention, optionally, the transmission assembly further comprises a gear hub and a sliding sleeve. The gear hub is arranged on the first output shaft; the sliding sleeve is arranged on a side of the gear hub away from the first output shaft, and the sliding sleeve can be connected to or separated from the driving gear.

[0015] In this technical solution, the transmission assembly also includes a gear hub and a sleeve. The gear hub is arranged on the first output shaft to realize the installation of the gear hub. The sleeve is arranged on the side of the gear hub away from the first output shaft to realize the installation of the sleeve. The sleeve can be connected or separated from the driving gear. By connecting the sleeve with the driving gear, the driving gear can transmit power to the first output shaft to realize the switching of gears. The sleeve can be separated from the driving gear, so that the driving gear cannot transmit power to the first output shaft. Therefore, when the sleeve can be separated from the driving gear, the transmission assembly is in a neutral state, thereby disconnecting the power of the first engine and the second engine. By setting the gear hub and the sleeve, the gear switching is realized, and the vehicle speed is adjusted.

[0016] In a technical solution of the present invention, optionally, the hybrid power assembly further includes a third transmission shaft and a fourth transmission shaft. One end of the third transmission shaft is connected to the output end of the first engine, and the other end of the third transmission shaft is connected to the first transmission shaft; one end of the fourth transmission shaft is connected to the output end of the second engine, and the other end of the fourth transmission shaft is connected to the second transmission shaft; wherein the axis of the third transmission shaft and the axis of the fourth transmission shaft have a first angle.

[0017] In this technical solution, the hybrid power assembly also includes a third transmission shaft and a fourth transmission shaft. One end of the third transmission shaft is connected to the output end of the first engine, and the other end of the third transmission shaft is connected to the first transmission shaft to achieve installation and fixation of the third transmission shaft, so that the third transmission shaft can transmit the power of the first engine to the first transmission shaft. One end of the fourth transmission shaft is connected to the output end of the second engine, and the other end of the fourth transmission shaft is connected to the second transmission shaft to achieve installation and fixation of the fourth transmission shaft, so that the fourth transmission shaft can transmit the power of the second engine to the second transmission shaft. There is a first angle between the axis of the third transmission shaft and the axis of the fourth transmission shaft. By tilting the axis of the third transmission shaft and the axis of the fourth transmission shaft at a certain angle, the positions of the first transmission shaft and the second transmission shaft can be adapted.

[0018] In a technical solution of the present invention, optionally, there is a second angle between the axis of the first engine and the axis of the second engine.

[0019] In this technical solution, there is a second angle between the axis of the first engine and the axis of the second engine to adjust the installation position of the first engine and the second engine, so that the first engine and the second engine are arranged with inclined axes, and can adapt to the space of the frame.

[0020] The second aspect of the present invention provides a vehicle, comprising a hybrid power assembly in any of the above technical solutions, wherein the first motor is connected to the axle. Therefore, the vehicle has all the beneficial effects of the hybrid power assembly, which will not be described in detail here.

[0021] The third aspect of the present invention provides a control method for a hybrid power component, which includes: controlling the vehicle to start, the second motor transmits power to the first motor through the transmission component, and the power transmitted by the transmission component is coupled with the power of the first motor to drive the axle; when the speed of the vehicle reaches a first threshold, the second motor adjusts the speed of the first engine and the second engine through the transmission component, and when the speed of the first engine and the second engine reaches a second threshold, the first engine and the second engine start.

[0022] In this technical solution, the vehicle is controlled to start, and the second motor transmits power to the first motor through the transmission assembly. The power transmitted by the transmission assembly is coupled with the power of the first motor to drive the axle. Therefore, when the vehicle starts, the second motor can assist the first motor in driving to ensure the vehicle's ability to get out of trouble. When the speed of the vehicle reaches the first threshold, the second motor adjusts the speed of the first engine and the second engine through the transmission assembly. When the speed of the first engine and the second engine reaches the second threshold, the first engine and the second engine start. Therefore, after the vehicle starts, the first engine and the second engine are controlled to start, so that the first engine and the second engine can transmit power to the transmission assembly, and the transmission assembly can couple the power of the first engine and the second engine and transmit it to the first motor, so that the first engine and the second engine drive the vehicle to move at the same time, and the first motor and the second motor assist. Therefore, the present application sets the first engine and the second engine to be connected to the transmission assembly, so that the transmission assembly couples the power of the first engine and the second engine to drive the vehicle, that is, the dual engines are used as the main power source to drive the vehicle, improve fuel power, reduce engine load, and improve fuel economy.

[0023] In one technical solution of the present invention, optionally, the second motor transmits power to the first motor through a transmission assembly, including: controlling the transmission assembly to adjust to the first gear, the first engine and the second engine are temporarily not started, the second motor outputs power through the fourth gear and the first gear to the first output shaft, and the first output shaft transmits power to the first motor to achieve pure electric starting of the vehicle.

[0024] In one technical solution of the present invention, optionally, after the first engine and the second engine are started, the control method of the hybrid power assembly also includes: when the vehicle shifts gears, controlling the first motor to drive the axle to move at a first speed; controlling the transmission assembly to be in neutral; controlling the second motor, the first engine and the second engine to drive the first drive shaft and the second drive shaft to run at a second speed; when the first speed is the same as the second speed, controlling the transmission assembly to adjust to a preset gear.

[0025] In this technical solution, when the vehicle is shifting gears, the first motor is controlled to drive the axle to move at the first speed. Therefore, when shifting gears, the first motor can maintain the stability of the vehicle speed to avoid the vehicle speed from decreasing, thereby ensuring that the power is shifted without interruption. The transmission assembly is controlled to be in neutral; the second motor, the first engine and the second engine are controlled to drive the first transmission shaft and the second transmission shaft to run at the second speed; when the first speed is the same as the second speed, the transmission assembly is controlled to be adjusted to a preset gear, so that the second motor can drive the first transmission shaft and the second transmission shaft to move, and then drive the first engine and the second engine to adjust the speed together, and the corresponding gear is engaged after the speed synchronization is achieved.

[0026] In a fourth aspect, the present invention provides a control device for a hybrid power assembly, comprising a memory and a processor, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the control method for the hybrid power assembly in any of the above technical solutions are implemented. Therefore, the control device for the hybrid power assembly has all the beneficial effects of the control method for the hybrid power assembly, which will not be described in detail here.

[0027] In a fifth aspect, the present invention provides a readable storage medium on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the control method of the hybrid power component in any of the above technical solutions are implemented. Therefore, the readable storage medium has all the beneficial effects of the control method of the hybrid power component, which will not be repeated here.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 A schematic diagram of a hybrid power assembly according to an embodiment of the present invention is shown;

[0031] Figure 2 A schematic diagram of a transmission assembly according to an embodiment of the present invention is shown;

[0032] Figure 3 A flow chart showing a method for controlling a hybrid power assembly according to an embodiment of the present invention;

[0033] Figure 4 A structural block diagram of a control device of a hybrid power assembly according to an embodiment of the present invention is shown.

[0034] in, Figures 1 to 4The corresponding relationship between the reference numerals and component names in the figure is:

[0035] 100 hybrid power assembly, 102 transmission assembly, 104 first output shaft, 106 first transmission shaft, 108 second transmission shaft, 110 driving gear, 112 first gear, 114 second gear, 116 third gear, 118 fourth gear, 120 first driven gear, 122 fifth gear, 124 sixth gear, 126 seventh gear, 128 eighth gear, 130 second driven gear, 132 ninth gear, 134 tenth gear, 136 eleventh gear, 138 twelfth gear , 140 hub gear, 142 first hub gear, 144 second hub gear, 146 sleeve, 148 first sleeve, 150 second sleeve, 152 first engine, 154 second engine, 156 first motor, 158 second motor, 160 third transmission shaft, 162 fourth transmission shaft, 164 housing, 166 mounting cavity, 200 vehicle, 210 axle, 220 rear axle main reduction gear, 230 rear axle driving gear, 300 control device of hybrid power component, 310 memory, 320 processor. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0038] Refer to the following Figures 1 to 4 A hybrid power assembly 100 and a control method thereof, a control device, a vehicle 200 and a storage medium according to some embodiments of the present invention are described.

[0039] The present invention provides a hybrid power assembly 100, such as Figure 1 and Figure 2As shown, the vehicle 200 includes an axle 210, and the hybrid power assembly 100 includes a transmission assembly 102, a first engine 152, a second engine 154, a first motor 156, and a second motor 158. The transmission assembly 102 includes a first output shaft 104, a first transmission shaft 106, and a second transmission shaft 108. The first transmission shaft 106 is connected to the first output shaft 104 in a transmission manner, and the second transmission shaft 108 is connected to the first output shaft 104 in a transmission manner; the output end of the first engine 152 is connected to the first transmission shaft 106; the output end of the second engine 154 is connected to the second transmission shaft 108; the first motor 156 is connected to the first output shaft 104 and the axle 210, respectively; the second motor 158 is connected to the first transmission shaft 106 and the second transmission shaft 108, respectively. When the vehicle 200 is started, the second motor 158 transmits power to the first motor 156 through the transmission assembly 102. The power transmitted by the transmission assembly 102 is coupled with the power of the first motor 156 to drive the axle 210. When the speed of the vehicle 200 reaches a first threshold, the second motor 158 adjusts the speed of the first engine 152 and the second engine 154 through the transmission assembly 102. When the speed of the first engine 152 and the second engine 154 reaches a second threshold, the first engine 152 and the second engine 154 are started.

[0040] In this embodiment, the vehicle 200 includes an axle 210, and the hybrid power assembly 100 includes a transmission assembly 102, a first engine 152, a second engine 154, a first motor 156, and a second motor 158. The transmission assembly 102 includes a first output shaft 104, a first transmission shaft 106, and a second transmission shaft 108. The first transmission shaft 106 is transmission-connected to the first output shaft 104, and the second transmission shaft 108 is transmission-connected to the first output shaft 104, so as to realize the installation of the first transmission shaft 106, the second transmission shaft 108, and the first output shaft 104. When power is transmitted to the first transmission shaft 106 and the second transmission shaft 108, the first transmission shaft 106 and the second transmission shaft 108 can transmit power to the first output shaft 104 for output. The output end of the first engine 152 is connected to the first transmission shaft 106; the output end of the second engine 154 is connected to the second transmission shaft 108, so as to realize the installation of the first engine 152 and the second engine 154, so that the first engine 152 and the second engine 154 can transmit power to the first transmission shaft 106 and the second transmission shaft 108. The first motor 156 is connected to the first output shaft 104 and the axle 210 respectively, so that the first motor 156 can receive the power transmitted by the first output shaft 104, and the first motor 156 can drive the axle 210, so that the vehicle 200 can run. The second motor 158 is respectively connected to the first transmission shaft 106 and the second transmission shaft 108, so that the second motor 158 can drive the first transmission shaft 106 and the second transmission shaft 108 to move, and then output the power through the first output shaft 104. When the vehicle 200 is started, the second motor 158 transmits power to the first motor 156 through the transmission assembly 102. The power transmitted by the transmission assembly 102 is coupled with the power of the first motor 156 to drive the axle 210. Therefore, when the vehicle 200 is started, the second motor 158 can assist the first motor 156 in driving to ensure the vehicle 200's ability to get out of trouble. When the speed of the vehicle 200 reaches a first threshold, the second motor 158 adjusts the speed of the first engine 152 and the second engine 154 through the transmission assembly 102. When the speed of the first engine 152 and the second engine 154 reaches a second threshold, the first engine 152 and the second engine 154 are started. Therefore, after the vehicle 200 starts, the first engine 152 and the second engine 154 are controlled to start, so that the first engine 152 and the second engine 154 can transmit power to the transmission assembly 102, and the transmission assembly 102 can couple the power of the first engine 152 and the second engine 154 and transmit it to the first motor 156, so that the first engine 152 and the second engine 154 drive the vehicle 200 to move at the same time, and the first motor 156 and the second motor 158 assist.Therefore, the present application sets up a first engine 152 and a second engine 154 to connect with the transmission assembly 102, so that the transmission assembly 102 couples the power of the first engine 152 and the second engine 154 to drive the vehicle 200, that is, dual engines are used as the main power source to drive the vehicle 200, thereby improving fuel power, reducing engine load, and improving fuel economy.

[0041] Specifically, the present application can solve the problem of complex shifting logic and improve system reliability by adopting a set of transmission components 102.

[0042] Specifically, the first motor 156 can be a 600VDC (Voltage Direct Current) platform permanent magnet synchronous common-body dual motor with a high torque reserve coefficient. The rated power of a single machine is above 250kw, the rated torque is above 3750Nm, and the peak torque is above 7500Nm (Newton-meter). The higher torque reserve ensures that the first engine 152 and the second engine 154 still have strong power output when shifting gears, improves the reliability of gear shifting, and prevents frequent gear shifting due to excessive vehicle speed drop; the maximum speed is above 3000rpm (Revolutions Per Minute) to ensure high vehicle speed in pure electric state.

[0043] Specifically, the second motor 158 can be a 600VDC platform permanent magnet synchronous single motor, which amplifies the torque through the transmission assembly 102 and can adopt motors of commonly used specifications for pure electric wide-body vehicles; when the vehicle 200 starts, the second motor 158 assists the first motor 156 in power output, and the peak torque of the second motor 158 is required to be above 2500Nm to ensure the ability to get out of trouble; when the vehicle speed is very high, the transmission assembly 102 is placed in neutral to disconnect the power of the first engine 152 and the second engine 154, and the first engine 152 and the second engine 154 can drive the second motor 158 to generate electricity and balance the SOC, and the rated power of the second motor 158 is required to be above 300kW and the peak speed is 3500rpm~4000rpm.

[0044] Specifically, the transmission assembly 102 is a power-combination transmission, and the dual engines consisting of the first engine 152 and the second engine 154 can couple power through the transmission assembly 102 and be connected to the motor to serve as the main power to drive the vehicle 200.

[0045] Specifically, the power combination transmission is a single-stage reduction gearbox with high efficiency and compact structure.

[0046] The power-combined transmission has a wide ratio range, which can ensure that the pure fuel-driven vehicle speed can reach approximately 6kph to 42kph (Kilometers Per Hour), covering most operating conditions; it realizes direct engine power output, which can ensure sufficient power and a high level of SOC.

[0047] Specifically, the symmetrical input power of the dual engines consisting of the first engine 152 and the second engine 154 can offset the radial force and tangential force of the driving gear 110, thereby greatly improving reliability.

[0048] Specifically, a total of three power inputs of the dual engines + the second motor 158 are input to the transmission assembly 102 , and the output end is coupled to the first motor 156 , so that a variety of hybrid modes can be achieved.

[0049] Specifically, the displacement of the first engine 152 and the second engine 154 is 1.14L (liter) to 17L. The total power of the dual-engine coupling with a displacement of 1.14L to 17L can reach more than 800kw (kilowatts), meeting the power requirements of a 100T (ton) large mining truck while avoiding the problem of high engine load and low fuel efficiency of hybrid.

[0050] Specifically, the hybrid power assembly 100 in the present application adopts a transmission assembly 102, and the first motor 156 does not require a transmission, which can simplify the gear shifting logic and improve the reliability of the gear shifting.

[0051] Specifically, when the vehicle 200 is starting and the vehicle speed is very low, the first engine 152 and the second engine 154 are not started, and the second motor 158 can output power through the transmission assembly 102 to couple with the power of the first motor 156 to improve the escape capability.

[0052] Specifically, after the vehicle 200 starts, the first engine 152 and the second engine 154 are started to directly output power, thereby avoiding a low SOC (State of Charge) due to long-term pure electric output.

[0053] Specifically, the hybrid power assembly 100 also includes a housing 164 having an installation cavity 166 , and the transmission assembly 102 , the first engine 152 , the second engine 154 , the first motor 156 and the second motor 158 are located in the installation cavity 166 , so that the housing 164 can protect the components in the installation cavity 166 .

[0054] Specifically, the power of the first motor 156 meets the driving / braking requirements under high-speed conditions such as empty vehicle or downhill, and there is no need for auxiliary output from the first engine 152, the second engine 154 and the second motor 158. At this time, the transmission assembly 102 can be placed in neutral to prevent the first engine 152 and the second engine 154 from overspeeding. At the same time, the first engine 152 and the second engine 154 can drive the second motor 158 to generate electricity to maintain SOC.

[0055] This embodiment provides a hybrid power assembly 100 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0056] like Figure 1 and Figure 2 As shown, the transmission assembly 102 further includes a driving gear 110, a first driven gear 120 and a second driven gear 130. The driving gear 110 is disposed on the first output shaft 104; the first driven gear 120 is disposed on the first transmission shaft 106 and meshes with the driving gear 110; the second driven gear 130 is disposed on the second transmission shaft 108 and meshes with the driving gear 110.

[0057] In this embodiment, the transmission assembly 102 further includes a driving gear 110, a first driven gear 120, and a second driven gear 130. The driving gear 110 is disposed on the first output shaft 104 to achieve the installation of the driving gear 110. The first driven gear 120 is disposed on the first transmission shaft 106 and meshes with the driving gear 110 to achieve the installation of the first driven gear 120. The second driven gear 130 is disposed on the second transmission shaft 108 and meshes with the driving gear 110 to achieve the installation of the second driven gear 130. By arranging the driving gear 110, the first driven gear 120, and the second driven gear 130, power can be transmitted between the first output shaft 104 and the first transmission shaft 106, and between the first output shaft 104 and the second transmission shaft 108, so that the power of the first engine 152, the second engine 154, and the second motor 158 can be transmitted to the first output shaft 104 for output.

[0058] Specifically, the driving gear 110 includes a first gear 112, a second gear 114, a third gear 116 and a fourth gear 118, which are arranged in sequence at intervals, and the fourth gear 118 is located on a side close to the first motor 156. The first driven gear 120 includes a fifth gear 122, a sixth gear 124, a seventh gear 126 and an eighth gear 128, the first gear 112 is meshed with the fifth gear 122, the second gear 114 is meshed with the sixth gear 124, the third gear 116 is meshed with the seventh gear 126, and the fourth gear 118 is meshed with the eighth gear 128. The second driven gear 130 includes a ninth gear 132 , a tenth gear 134 , an eleventh gear 136 and a twelfth gear 138 , the first gear 112 meshes with the ninth gear 132 , the second gear 114 meshes with the tenth gear 134 , the third gear 116 meshes with the eleventh gear 136 , and the fourth gear 118 meshes with the twelfth gear 138 .

[0059] Specifically, the first gear 112 , the second gear 114 , the third gear 116 , and the fourth gear 118 are rotatable relative to the first output shaft 104 .

[0060] Specifically, the speed ratios of the first gear 112 , the second gear 114 , the third gear 116 and the fourth gear 118 are approximately 3:1.8:1:0.7, and the vehicle speed driven by pure fuel can reach approximately 6 kph to 42 kph.

[0061] This embodiment provides a hybrid power assembly 100 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0062] like Figure 1 As shown, the transmission assembly 102 further includes a gear hub 140 and a sliding sleeve 146. The gear hub 140 is disposed on the first output shaft 104; the sliding sleeve 146 is disposed on a side of the gear hub 140 away from the first output shaft 104, and the sliding sleeve 146 can be connected to or separated from the driving gear 110.

[0063] In this embodiment, the transmission assembly 102 further includes a gear hub 140 and a sleeve 146. The gear hub 140 is disposed on the first output shaft 104 to achieve installation of the gear hub 140. The sleeve 146 is disposed on a side of the gear hub 140 away from the first output shaft 104 to achieve installation of the sleeve 146. The sleeve 146 can be connected to or separated from the driving gear 110. By connecting the sleeve 146 to the driving gear 110, the driving gear 110 can transmit power to the first output shaft 104 to achieve the shifting of the gear position. The sleeve 146 can be separated from the driving gear 110, so that the driving gear 110 cannot transmit power to the first output shaft 104. Therefore, when the sleeve 146 can be separated from the driving gear 110, the transmission assembly 102 is in a neutral state, thereby disconnecting the power of the first engine 152 and the second engine 154. The gear hub 140 and the sliding sleeve 146 are provided to realize the switching of gear positions, thereby realizing the adjustment of the speed of the vehicle 200 .

[0064] Specifically, when the gear is engaged, the sliding sleeve 146 is connected to the engaging teeth of the driving gear 110 to achieve power output.

[0065] Specifically, when in neutral, the first engine 152 , the second engine 154 , and the second motor 158 cannot drive the vehicle 200 , but the first engine 152 and the second engine 154 can drive the second motor 158 to generate electricity through the transmission assembly 102 .

[0066] Specifically, the gear hub 140 includes a first gear hub 142 and a second gear hub 144, and the sleeve 146 includes a first sleeve 148 and a second sleeve 150. The first gear hub 142 is connected to the first sleeve 148, and the second gear hub 144 is connected to the second sleeve 150. The second sleeve 150 is located between the third gear 116 and the fourth gear 118, and the first sleeve 148 is located between the first gear 112 and the second gear 114. The second sleeve 150 can be connected to the third gear 116 or the fourth gear 118 so that the transmission assembly 102 is adjusted to the third gear or the fourth gear; the first sleeve 148 can be connected to the first gear 112 or the second gear 114 so that the transmission assembly 102 is adjusted to the first gear or the second gear.

[0067] Specifically, the fourth gear 118 is connected to the second motor 158 , so that power can be transmitted between the fourth gear 118 and the second motor 158 .

[0068] Specifically, the rotor shaft of the second motor 158 is connected to the first engine 152 and the second engine 154 through the fourth gear 118 to increase the speed of power generation and improve power generation efficiency. The rotor shaft is a hollow structure, and the first output shaft 104 passes through the hollow structure and is connected to the first motor 156 to achieve a hybrid mode.

[0069] Specifically, the second motor 158 can achieve power output with various speed ratios through the fourth gear 118 and other gear combinations, thereby reducing the requirements for motor torque and using a universal motor to reduce costs.

[0070] This embodiment provides a hybrid power assembly 100 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0071] like Figure 1 As shown, the hybrid power assembly 100 further includes a third transmission shaft 160 and a fourth transmission shaft 162. One end of the third transmission shaft 160 is connected to the output end of the first engine 152, and the other end of the third transmission shaft 160 is connected to the first transmission shaft 106; one end of the fourth transmission shaft 162 is connected to the output end of the second engine 154, and the other end of the fourth transmission shaft 162 is connected to the second transmission shaft 108; wherein, the axis of the third transmission shaft 160 and the axis of the fourth transmission shaft 162 have a first angle.

[0072] In this embodiment, the hybrid power assembly 100 further includes a third transmission shaft 160 and a fourth transmission shaft 162. One end of the third transmission shaft 160 is connected to the output end of the first engine 152, and the other end of the third transmission shaft 160 is connected to the first transmission shaft 106, so as to realize the installation and fixation of the third transmission shaft 160, so that the third transmission shaft 160 can transmit the power of the first engine 152 to the first transmission shaft 106. One end of the fourth transmission shaft 162 is connected to the output end of the second engine 154, and the other end of the fourth transmission shaft 162 is connected to the second transmission shaft 108, so as to realize the installation and fixation of the fourth transmission shaft 162, so that the fourth transmission shaft 162 can transmit the power of the second engine 154 to the second transmission shaft 108. There is a first angle between the axis of the third transmission shaft 160 and the axis of the fourth transmission shaft 162, and the positions of the first transmission shaft 106 and the second transmission shaft 108 can be adapted by tilting the axis of the third transmission shaft 160 and the axis of the fourth transmission shaft 162 at a certain angle.

[0073] Specifically, in Figure 1 , line C represents the axis of the third transmission shaft 160 , and line D represents the axis of the fourth transmission shaft 162 .

[0074] This embodiment provides a hybrid power assembly 100 . In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0075] There is a second angle between the axis of the first engine 152 and the axis of the second engine 154 .

[0076] In this embodiment, there is a second angle between the axis of the first engine 152 and the axis of the second engine 154 to achieve adjustment of the installation position of the first engine 152 and the second engine 154, so that the first engine 152 and the second engine 154 are arranged with inclined axes, and thus can adapt to the space of the frame.

[0077] Specifically, in Figure 1 , line A represents the axis of the first engine 152 , and line B represents the axis of the second engine 154 .

[0078] Specifically, along the direction from the first engine 152 to the transmission assembly 102 , the distance between the axis of the first engine 152 and the axis of the transmission assembly 102 gradually decreases.

[0079] Specifically, along the direction from the second engine 154 to the transmission assembly 102 , the distance between the axis of the second engine 154 and the axis of the transmission assembly 102 gradually decreases.

[0080] Specifically, the vehicle 200 further includes a rear axle main reduction gear 220 and a rear axle driving gear 230. The main reduction gear is disposed on the vehicle axle 210. The rear axle main reduction gear 220 meshes with the rear axle driving gear 230. The rear axle driving gear 230 is connected to the first motor 156. The first motor 156 can transmit power to the rear axle driving gear 230. The first transmission shaft 106 and the second transmission shaft 108 of the transmission assembly 102 rotate in opposite directions to the first output shaft 104. Therefore, the offset direction of the rear axle main reduction gear 220 relative to the rear axle driving gear 230 is opposite to that of the conventional vehicle axle 210.

[0081] In one embodiment of the present application, a vehicle 200 is provided, including a hybrid power assembly 100 in any of the above embodiments with an axle 210, and a first motor 156 is connected to the axle 210. Therefore, the vehicle 200 has all the beneficial effects of the hybrid power assembly 100, which will not be described in detail here.

[0082] Specifically, the vehicle 200 is a mining truck, a dump truck or a wide-body truck.

[0083] In one embodiment of the present application, a control method for a hybrid power assembly is provided, such as Figure 3 As shown, the control method of the hybrid power component includes:

[0084] S202, controlling the vehicle to start, the second motor transmits power to the first motor through the transmission assembly, and the power transmitted by the transmission assembly is coupled with the power of the first motor to drive the axle;

[0085] S204, when the speed of the vehicle reaches a first threshold, the second motor adjusts the speed of the first engine and the second engine through the transmission assembly, and when the speed of the first engine and the second engine reaches a second threshold, the first engine and the second engine are started.

[0086] In this embodiment, the vehicle is controlled to start, and the second motor transmits power to the first motor through the transmission assembly. The power transmitted by the transmission assembly is coupled with the power of the first motor to drive the axle. Therefore, when the vehicle starts, the second motor can assist the first motor in driving to ensure the vehicle's ability to get out of trouble. When the speed of the vehicle reaches the first threshold, the second motor adjusts the speed of the first engine and the second engine through the transmission assembly. When the speed of the first engine and the second engine reaches the second threshold, the first engine and the second engine start. Therefore, after the vehicle starts, the first engine and the second engine are controlled to start, so that the first engine and the second engine can transmit power to the transmission assembly, and the transmission assembly can couple the power of the first engine and the second engine and transmit it to the first motor, so that the first engine and the second engine drive the vehicle to move at the same time, and the first motor and the second motor assist. Therefore, the present application sets the first engine and the second engine to be connected to the transmission assembly, so that the transmission assembly couples the power of the first engine and the second engine to drive the vehicle, that is, the dual engines are used as the main power source to drive the vehicle, improve fuel power, reduce engine load, and improve fuel economy.

[0087] In one embodiment of the present invention, optionally, the second motor transmits power to the first motor through a transmission assembly, including: controlling the transmission assembly to adjust to the first gear, the first engine and the second engine are temporarily not started, the second motor outputs power through the fourth gear and the first gear to the first output shaft, and the first output shaft transmits power to the first motor to achieve pure electric starting of the vehicle.

[0088] Specifically, the first threshold is 5 kph to 7 kph.

[0089] Specifically, the first threshold is 6 kph.

[0090] Specifically, the second threshold is 900 rpm to 1100 rpm.

[0091] Specifically, the second threshold is 1000 rpm.

[0092] Specifically, after the vehicle starts, the vehicle speed reaches about 6 kph, and the first engine and the second engine are dragged to reach a practical speed of about 1000 rpm to start and output power to achieve the starting of the first engine and the second engine.

[0093] Specifically, after the first engine and the second engine output power to the transmission assembly, the first engine and the second engine are controlled to output power in an economic range, and the first motor and the second motor perform auxiliary driving to achieve low-speed fuel economy priority.

[0094] Specifically, when the vehicle is running at high speed, the dual engines have sufficient power to drive the motor and the second motor to generate electricity while ensuring economy.

[0095] In one embodiment of the present invention, optionally, after the first engine and the second engine are started, the control method of the hybrid power assembly also includes: when the vehicle shifts gears, controlling the first motor to drive the axle to move at a first speed; controlling the transmission assembly to be in neutral; controlling the second motor, the first engine and the second engine to drive the first drive shaft and the second drive shaft to run at a second speed; when the first speed is the same as the second speed, controlling the transmission assembly to adjust to a preset gear.

[0096] In this embodiment, when the vehicle is shifting gears, the first motor is controlled to drive the axle to move at the first speed. Therefore, when shifting gears, the first motor can maintain the stability of the vehicle speed to avoid the vehicle speed from decreasing, thereby ensuring that the power is shifted without interruption. The transmission assembly is controlled to be in neutral; the second motor, the first engine and the second engine are controlled to drive the first transmission shaft and the second transmission shaft to run at the second speed; when the first speed is the same as the second speed, the transmission assembly is controlled to be adjusted to a preset gear, so that the second motor can drive the first transmission shaft and the second transmission shaft to move, and then drive the first engine and the second engine to adjust the speed together, and the corresponding gear is engaged after the speed synchronization is achieved.

[0097] Specifically, at high speeds, the dual engines have sufficient power to drive the first motor and the second motor to generate electricity while ensuring economy.

[0098] When shifting gears, the first motor increases the torque output to maintain a stable vehicle speed. At the same time, the second motor drives the first engine and the second engine to adjust the speed together through the fourth gear. After the speed is synchronized, the corresponding gear is engaged to achieve gear shifting without power interruption.

[0099] Specifically, when the vehicle is in high-speed extended-range state: that is, when the vehicle speed reaches 42kph or more, the engine is at risk of overspeeding, the first motor is driven alone, and the second motor, the first engine and the second engine jointly control the gear speed of the transmission assembly, and then control the transmission to shift into neutral; the first engine and the second engine drag the second motor to generate electricity through the fourth gear; since the fourth gear is the speed-increasing gear, the economic speed of the first engine and the second engine of 1500rpm corresponds to the speed of the second motor of more than 2100rpm, and electricity can be generated in the high-efficiency range of the first engine, the second engine and the second motor to maintain SOC balance; at the same time, the speed and power output of the first engine and the second engine can be controlled according to power generation needs.

[0100] Specifically, when the vehicle stops, the first motor is controlled to stop power output, the transmission assembly is put into neutral, and the first engine and the second engine drag the second motor to generate electricity through the fourth gear, so that the vehicle can generate electricity when it stops.

[0101] Specifically, when the vehicle is heavily loaded and traveling downhill, if the SOC is not high, power recovery can be achieved through the first motor, or by dragging the second motor through the fourth gear to achieve recovery braking.

[0102] In one embodiment of the present application, a control device 300 of a hybrid power assembly is provided, such as Figure 4 As shown, the control device of the hybrid power assembly includes a memory 310 and a processor 320. The memory 310 stores programs or instructions that can be run on the processor 320. When the programs or instructions are executed by the processor 320, the steps of the control method of the hybrid power assembly in any of the above embodiments are implemented. Therefore, the control device of the hybrid power assembly has all the beneficial effects of the control method of the hybrid power assembly, which will not be repeated here.

[0103] In one embodiment of the present application, a readable storage medium is provided, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the control method of the hybrid power component in any of the above embodiments are implemented. Therefore, the readable storage medium has all the beneficial effects of the control method of the hybrid power component, which will not be repeated here.

[0104] In the claims, specification and drawings of the present invention, the term "multiple" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, which is only for the purpose of more conveniently describing the present invention and making the description process simpler, rather than indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation, so these descriptions cannot be understood as limiting the present invention; the terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the specific circumstances of the above data.

[0105] In the claims, specification and drawings of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0106] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hybrid power assembly, characterized in that: The vehicle includes an axle, the hybrid power assembly including: A transmission assembly, the transmission assembly comprising a first output shaft, a first transmission shaft and a second transmission shaft, the first transmission shaft being in driving connection with the first output shaft, and the second transmission shaft being in driving connection with the first output shaft; a first engine, wherein an output end of the first engine is connected to the first transmission shaft; a second engine, wherein an output end of the second engine is connected to the second transmission shaft; a first motor, the first motor being connected to the first output shaft and the axle respectively; a second motor, the second motor being transmission-connected to the first transmission shaft and the second transmission shaft respectively; When the vehicle is started, the second motor transmits power to the first motor through the transmission assembly, and the power transmitted by the transmission assembly is coupled with the power of the first motor to drive the vehicle axle; When the speed of the vehicle reaches a first threshold, the second motor adjusts the speed of the first engine and the second engine through the transmission assembly. When the speed of the first engine and the second engine reaches a second threshold, the first engine and the second engine are started.

2. The hybrid power assembly according to claim 1, characterized in that: The transmission assembly further comprises: A driving gear, the driving gear being arranged on the first output shaft; a first driven gear, the first driven gear being disposed on the first transmission shaft and meshing with the driving gear; A second driven gear is disposed on the second transmission shaft and meshes with the driving gear.

3. The hybrid power assembly according to claim 2, characterized in that: The transmission assembly further comprises: a gear hub, the gear hub being arranged on the first output shaft; A sliding sleeve is arranged on a side of the gear hub away from the first output shaft, and the sliding sleeve can be connected to or separated from the driving gear.

4. The hybrid power assembly according to any one of claims 1 to 3, characterized in that: Also includes: a third transmission shaft, one end of the third transmission shaft being connected to the output end of the first engine, and the other end of the third transmission shaft being connected to the first transmission shaft; a fourth transmission shaft, one end of which is connected to the output end of the second engine, and the other end of which is connected to the second transmission shaft; Wherein, there is a first angle between the axis of the third transmission shaft and the axis of the fourth transmission shaft.

5. The hybrid power assembly according to any one of claims 1 to 3, characterized in that: A second angle is formed between the axis of the first engine and the axis of the second engine.

6. A vehicle, characterized in that: include: Axles; According to any one of claims 1 to 5, the first motor is connected to the axle.

7. A control method for a hybrid power assembly, characterized in that: The control method of the hybrid power assembly comprises: Control the vehicle to start, the second motor transmits power to the first motor through the transmission assembly, and the power transmitted by the transmission assembly is coupled with the power of the first motor to drive the axle; When the speed of the vehicle reaches a first threshold, the second motor adjusts the speed of the first engine and the second engine through the transmission assembly. When the speed of the first engine and the second engine reaches a second threshold, the first engine and the second engine are started.

8. The control method of the hybrid power assembly according to claim 7, characterized in that: After the first engine and the second engine are started, the control method of the hybrid power assembly further includes: When the vehicle shifts gears, controlling the first motor to drive the axle to move at a first speed; Controlling the transmission assembly to be in neutral; controlling the second motor, the first engine and the second engine to drive the first transmission shaft and the second transmission shaft to operate at a second speed; When the first speed is the same as the second speed, the transmission assembly is controlled to be adjusted to a preset gear.

9. A control device for a hybrid power assembly, characterized in that: The method comprises a memory and a processor, wherein the memory stores a program or an instruction that can be run on the processor, and when the program or the instruction is executed by the processor, the steps of the control method of the hybrid power component as claimed in claim 7 or 8 are implemented.

10. A readable storage medium having a program or instruction stored thereon, characterized in that: When the program or the instruction is executed by a processor, the steps of the control method of the hybrid power component according to claim 7 or 8 are implemented.

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