89 results about "Power split" patented technology

The invention discloses a heavy truck power split hybrid system assembly and a control method thereof.The heavy truck power split hybrid system assembly is provided with an engine, an engine input shaft is axially arranged on the engine, and a clutch is connected to the engine input shaft; the planet row is provided with a sun gear, a gear ring and a planet carrier, and an engine input shaft is connected to the planet carrier connected with the planet row; the generator is connected with the sun gear of the planet row; the motor is connected to a gear ring of the planet row, and the output of the gear ring is connected with the gearbox; according to the heavy truck power split hybrid power system assembly and the control method thereof, dual motors, a planet row and a few-gear AMT gearbox are integrated, and according to a power split mode, the power of an engine drives a vehicle through mechanical transmission and electric transmission paths; compared with a traditional commercial vehicle power assembly framework, the new energy power assembly framework has the advantages of being high in comfort, less in power interruption, efficient and oil-saving.

The invention discloses a novel cross-country forklift, which relates to the technical field of hydraulic hybrid power systems of engineering machinery and comprises the following modules: a power module for providing driving power of the whole forklift; the power division module is used for realizing double-flow power division and convergence and comprises an integrated mechanical gear speed change unit and a hydraulic stepless speed change unit; the mechanical transmission module is used for transmitting the power of the mechanical direct drive branch to the drive part; the hydraulic execution module is used for realizing a dynamic characteristic cooperative control technology and matching the flow of a hydraulic system with a mechanical gear speed ratio by establishing a speed-torque-pressure three-parameter coupling model; a composite speed change module; and a control and management module. By adopting double-flow power division and convergence, power division of 70% mechanical energy direct drive and 30% hydraulic energy speed regulation is achieved, and the traditional transmission efficiency bottleneck is effectively broken through. And under the rugged terrain and the variable-load working condition, the energy utilization rate can be increased, fuel consumption is reduced, and the whole machine has higher economical efficiency and durability.

The application relates to an energy distribution method, device, controller and storage medium. The method comprises the following steps: acquiring driving modes and operation parameters of a vehicle in each unit time in a preset historical time period, combining a pre-constructed longitudinal dynamics model, a power split dynamics model, a battery model and an engine universal characteristic curve, determining a battery power consumption rate optimal sequence in a pure electric mode, and determining a candidate working point of a hybrid mode satisfying a combination minimum of fuel consumption rate and battery power consumption rate; then, a more balanced target working point is obtained by screening the candidate working point; based on the battery power consumption rate optimal sequence and the multiple target working points, each optimal driving mode and a global optimal control sequence for the preset historical time period are obtained through a dynamic programming algorithm; and then, system-level performance index parameters of the vehicle are optimized based on the optimal driving mode and the global optimal control sequence, so that the optimization of energy distribution in the running process of the vehicle is realized, and the economy of the vehicle is improved.

A power split hybrid power drive system comprises an engine, motors and a power transmission mechanism enabling the engine and the motors to be in transmission connection, the motors comprise the first motor, and the power transmission mechanism comprises a planet row enabling the engine and the first motor to achieve power coupling; the coupler is connected between the planet row and the first motor so as to allow and cut off power transmission between the planet row and the first motor; the differential mechanism is in transmission connection with the gear ring of the planet row and can receive the power transmitted by the gear ring to enable the vehicle to move forwards; and the locking mechanism is connected to the planet row and can lock a gear ring of the planet row. Due to the fact that the gear ring of the planet row is provided with the locking mechanism, the gear ring can be completely locked to the shell in the parking starting mode and the parking charging mode, and therefore the phenomenon that due to the action of fluctuation torque, the gear ring transmits knocking vibration to a gear in the power transmission mechanism, and consequently a vehicle vibrates, towns and the like is avoided.

The utility model relates to the field of vehicle parts, in particular to an electric sub-drive type gear packet and a vehicle, which comprises an input shaft, a synchronizing ring, an electric driving source and a driving unit for moving the synchronizing ring, the electric driving source is connected with the driving unit, and the synchronous ring is rotationally connected to the driving unit; the input shaft comprises a first input shaft body and a second input shaft body used for stretching into the tooth bag shell, and the first input shaft body and the second input shaft body are coaxially arranged. The synchronizing ring simultaneously acts on the first input shaft and the second input shaft, and at the moment, the first input shaft is in power connection with the second input shaft; the synchronizing ring only acts on one of the first input shaft and the second input shaft, and at the moment, power transmission of the first input shaft and the second input shaft is cut off. According to the scheme, switching of power input cutting and power connection transmission of the tooth bag is achieved in an electric mode, and switching of vehicle driving modes is achieved.

The invention provides a gear selection method, device and equipment for a hybrid electric vehicle and a computer medium. The method comprises the steps that torque required by a driver and allowable discharging power of a battery are determined; obtaining the current rotating speed of the driving motor, and determining a high-efficiency working interval of the driving motor in the efficiency characteristics of the driving motor based on the equipower line corresponding to the allowable discharge power of the battery and the current rotating speed of the driving motor; determining a power boundary required to be provided by an engine based on the torque required by the driver and the torque upper and lower limits of the efficient working interval of the driving motor; determining an engine feasible region in the working characteristics of the engine by combining the power boundary; executing an equivalent fuel consumption minimum algorithm in the feasible region of the engine and the efficient working region of the driving motor, and determining optimal working points of the engine and the driving motor; and the wheel end rotating speed is obtained, and the synchronizer gear of the power dividing mechanism is controlled according to the relation between the engine rotating speed corresponding to the optimal working point and the wheel end rotating speed.

Modular drive arrangement for driving a drive axle of a motor vehicle, comprising: an input shaft (10), a power split unit (1) for driving a first output shaft (7) and a second output shaft (8), wherein the power split unit has a drive (4) for transmitting rotary motion and a module interface, a first transmission module (2), wherein the first transmission module has a first input part (20) connectable to the input shaft (10), and wherein the first transmission module has an output part (5) connectable to the drive (4), a second transmission module (3), wherein the second transmission module has a second input part (30) connectable to the input shaft (10), and wherein the second transmission module has an output part (5) connectable to the drive (4), wherein either the first transmission module (2) is connected to the module interface,or the second translation module (3) is connected to the module interface, wherein the first translation module (2) has a fixed translation ratio between the input shaft (10) and the drive (4), wherein the second translation module (3) has a variable translation ratio between the input shaft (10) and the drive (4), and wherein the first translation module (2) and the second translation module (3) are interchangeable.

The scheme relates to the field of rail transit locomotive braking, and discloses a rail transit mechanical, electrical and hydraulic three-stage combined braking control method and a control system. The control method steps are as follows: a power split motor train unit including two or more than two power sources of internal combustion and electricity is used, one or several brakes of mechanical braking, electrical braking and hydraulic braking are selected according to the opening degree of the brake handle on the motor train unit, and the selected brake is used for braking. The control system includes a hydraulic retarder, a traction motor, a traction inverter, a mechanical transmission box, a clutch, an axle gear box, mechanical brake shoes, an energy storage device and a controller. Through the mechanical, electrical and hydraulic three-stage combined braking mode, the risk of braking failure caused by mechanical braking wear is further reduced, and the reliability and comfort of the braking system are improved.

The present application belongs to the technical field of vehicle gear shifting control, and specifically relates to a two-gear power split hybrid system gear shifting control strategy based on battery safety constraints, and specifically comprises the following steps: (1) introducing a power battery SOA boundary and an engine external characteristic to perform upper-layer target speed adaptive planning, and dynamically solving an engine target speed meeting a charge-discharge boundary; (2) based on the frequency domain response difference characteristics of multiple power sources, performing lower-layer active inertia damping control, using generator output reverse torque to suppress engine angular acceleration fluctuation, and realizing virtual decoupling of inertial torque; (3) based on the optimal matching principle of torque change rate, performing dynamic torque collaborative control, and inversely calculating and using motor action to compensate for torque loss; (4) performing multi-stage coordinated gear shifting according to the time sequence logic of a finite state machine. While effectively avoiding battery overcurrent risk and eliminating power interruption, the present application greatly reduces the longitudinal impact degree in the gear shifting process, and significantly improves the transient driving quality and smoothness of the vehicle.

The present application relates to a kind of power split shaft vibration test methods, devices and equipment based on response control, it is related to aerospace field.The technical scheme will power split shaft and tool be installed in vibration table, different gradient tightening torque and multistage vibration load are applied, response value is collected to construct load and response curve family;When given input load and required response, traverse curve family with response as ordinate, select adjacent abscissa and corresponding curve, and the target tightening torque is calculated by linear interpolation;Load is applied after fastening with target torque, if the measured response error is out of range, based on measured response iterative calculation, until error is up to standard to determine final torque.In this case, the response on shaft can be accurately adjusted, and the response can be controlled within a reasonable range, which can avoid under-test and effectively reduce over-test phenomenon, ensure that the power split shaft is reasonably evaluated by vibration load, expose possible problems in design in advance, shorten development cycle and reduce research and development costs.

Provided is a vehicle drive device capable of suppressing the occurrence of shock when switching between a first power split mode and a second power split mode. A mode switching process for switching the driving mode between the first power division mode and the second power division mode is executed when the rotation speed of the second motor is within a predetermined rotation speed range of zero or near zero. Thus, in the first power division mode, when the rotation speed of the second motor is zero or near zero, it is difficult to generate power transfer between the second motor and the third motor. Furthermore, in the second power division mode, when the rotational speed of the second motor is zero or near zero, it is difficult to generate power transfer between the first motor and the second motor. By executing the mode switching process when the rotational speed of the second electric motor is zero or near zero, the amount of change in torque of each electric motor can be reduced, and a change in driving force of the vehicle can be suppressed.

The gearbox has a high-speed shaft (1) with a pinion (2), a low-speed shaft (6) with a low-speed gear (7), and at least two power split branches including a power split shaft (3). A support disc (9) is located within the gearbox, and this support disc is connected to shafts (1), (6) and / or pinion (2) and / or low-speed gear (7) via flexible members (10) or joints (11) to tilt the axis of the support disc (9). A sliding connection is formed between the support disc (9) and the power split branch shafts (3), and each of the power split branch shafts (3) is provided with a first sliding fit to capture axial forces, and the outer circumference of the support disc (9) is provided with a corresponding second sliding fit. When one branch is loaded with a greater load, the axial force generated by the gears increases. Such a force causes the branch receiving the greater load to shift axially, thereby tilting the support disc (9). As a result, the branch with the lower load is simultaneously drawn in the direction that meshes more closely, and consequently, the load on that branch increases.

The invention relates to the technical field of hybrid power gearboxes, in particular to a single-planet-row multi-gear-driven single-motor hybrid power gearbox which is composed of three shafts, and the first shaft is composed of an engine, a driving motor, a single planet row and a double clutch; the second shaft is an intermediate shaft assembly and comprises a single clutch, and the third shaft is a differential mechanism assembly; the engine is connected with a planet row planet carrier and an outer clutch outer hub of the double clutch through an input shaft, the sun gear is connected with an inner clutch inner hub of the double clutch, and a rotor shaft of the driving motor is connected with a middle hub of the double clutch. An engine-driven driving gear and an electric-driven driving gear are respectively arranged on an outer gear ring of the single planet row and a rotor shaft of the driving motor; on one hand, the functions of parking power generation, pure electric driving, power split driving and engine three-gear driving can be achieved through opening and closing control over the three clutches, and on the other hand, through reversing of the differential mechanism and additional arrangement of the front-drive output shaft, a transverse front-drive scheme can be converted into a longitudinal front-drive scheme.

This invention discloses a hybrid vehicle mode switching control method, apparatus, device, and medium. The method includes: acquiring driving condition parameters of the hybrid vehicle; determining the power split state parameters of the sun gear based on the driving condition parameters; determining whether preset mode switching conditions are met based on the driving condition parameters and the power split state parameters; and if the preset mode switching conditions are met, executing the corresponding mode switching operation. This technical solution, by comprehensively determining the mode switching conditions using both driving condition parameters and the power split state parameters of the sun gear, accurately determines the timing of mode switching, achieving flexible switching of the hybrid vehicle's driving mode and improving the user's driving experience.

The invention relates to a hybrid power closed test bench, in particular to a hybrid power closed test bench for a planetary variable-frequency speed regulation device. The invention aims to solve the problem that the existing power closed test bench cannot meet the test requirements under the working condition of switching between double-input single-output and single-input double-output. The performance test bench can be widely applied to construction of various planetary variable-frequency speed regulation devices or performance test benches of other types of power dividing planetary transmission gear devices. The device has the advantages of less test site use and low driving power consumption. Secondly, according to the invention, a loader element in an existing mechanical power closed test bed structure is canceled while a mechanical power closed function is realized by designing the position of a motor and adjusting the overall structural arrangement of the test bed by utilizing the power dividing characteristic of planetary transmission. And finally, a speed increasing box and an accompanying test box are arranged, so that the working rotating speed and the torque adjusting range of the test bed are expanded, and the total occupied space is reduced. The invention belongs to the technical field of planetary variable-frequency speed regulation device tests.

The present invention relates to an independent power split transfer drivetrain (100) for electric vehicles (EV), comprising: at least two prime movers comprising a first motor M1 for driving a plurality of wheels and a second motor M2 for driving the Power Take-Off (PTO); a transmission unit comprising a 2-Stage reduction gearbox which splits the power between a front and rear axle (101, 102) using a plurality of traction gear pairs (GP1, GP2, GP3, GP4, GP5, and GP6) and between a mid and rear PTO's (103, 104) using a plurality of PTO gear pairs (GP7, GP8, GP9 and GP10); a flexible coupling C1 connects the output shaft of the first motor M1 and the second motor M2 to the transmission unit; a shift sleeve S1 configured to assembled in between the traction gear pairs GP1 and GP2. Advantageously, the present invention enhances the versatility and efficiency of EVs.

The invention belongs to the technical field of vehicle power transmission, and particularly relates to a tractor and trailer cooperative driving system which comprises a tractor driving mechanism and a trailer driving mechanism. The tractor driving mechanism comprises an engine, a torsion damper, a clutch, a power dividing unit, a multi-gear gearbox, a controller and a power battery, the power dividing unit comprises a gear ring, a sun gear, a planet gear, a first reversible motor and a combiner, and power distribution of the engine and the first reversible motor is achieved through the power dividing unit. The multi-gear gearbox provides gear shifting of a forward gear and a reverse gear. The trailer driving mechanism comprises a second reversible motor, a trailer speed change assembly, a trailer main speed reducer and a quick connector and can receive electric energy of the power battery or the first reversible motor to achieve active driving. The power coupling structure is simplified through power dividing, the tractor and the trailer are combined for cooperative driving, the transmission efficiency and the whole vehicle power performance are improved, energy consumption is reduced, the tractor load is reduced, and the whole vehicle power efficiency is optimized.

This application provides a vehicle mode switching method, system, and vehicle, belonging to the field of vehicle technology. The embodiments of this application, when the vehicle meets the mode switching conditions from power split mode to pure electric four-wheel drive mode, adjust the torque of the engine and the first motor to quickly disengage the clutch and control the engine to stop. Then, by adjusting the speed of the first motor while the clutch is open, the rapid closing of the first synchronizer can be achieved while ensuring shifting safety. This effectively improves the mode switching speed while ensuring smooth switching and enhancing the user's driving experience.

This invention relates to the field of telescopic cylinder technology, and discloses a rope-driven, power-separated, silent telescopic cylinder, including a cylinder body, a screw, a rope bridge, a push rod, a central coupling, an external universal joint, and a synchronous belt reel. The cylinder body is a hollow cavity, with the screw rotatably mounted inside. One end of the push rod is connected to the rope bridge and extends into the cylinder body, while the other end extends outwards. One end of the screw extends outwards and is connected to the synchronous belt reel sequentially via the central coupling and the external universal joint. The screw has a double-ended helical groove, and the rope bridge is connected to the groove via two strands of rope, forming a closed-loop transmission around the cylinder body pulley. During operation, the drive motor drives the synchronous belt reel to rotate the screw in both directions, and the rope winding and unwinding drives the rope bridge and push rod to extend and retract. This device achieves power separation from the cylinder body, is lightweight, and offers flexible installation; the rope transmission provides good noise reduction, and the structure is simple and low-cost, making it suitable for civilian applications such as powered home appliances and medical beds / chairs.

The invention relates to an electric vehicle (EV) independent power split transmission driveline (100) comprising: at least two prime movers comprising a first electric machine (M1) for driving a plurality of wheels and a second electric machine (M2) for driving a power take-off shaft (Power Take-Off, PTO); a transmission unit comprising a bipolar reduction gearbox, which uses a plurality of traction gear pairs (GP1, GP2, GP3, GP4, GP5, GP6, GP7, GP7) to split power between the front axle (101) and the rear axle (102) and a plurality of PTO gear pairs (GP8, GP9, GP10, GP11) to split power between the middle PTO (103) and the rear PTO (104); a flexible coupling (C1) connecting the output shafts of the first motor (M1) and the second motor (M2) to the transmission unit; and the meshing sleeve (S1) can be assembled between the traction gear pair (GP1) and the traction gear pair (GP2). The invention advantageously improves the versatility and efficiency of the electric vehicle.

The application provides a method, device, vehicle and storage medium for controlling vehicle reversing, which belongs to the technical field of vehicles. The method comprises the following steps: in the case that the actual operation mode of the vehicle is a power split mode, if the actual gear of a gear lever of the vehicle is switched to R gear, the actual gear of a gearbox of the vehicle is switched to R gear; during the switching of the actual gear of the gearbox to R gear, it is judged whether the R gear of the gearbox is available; in the case that the R gear of the gearbox is unavailable, the vehicle is controlled to switch from the power split mode to an idle pure electric four-wheel drive mode, so that the front-wheel motor of the vehicle outputs power to drive the front wheels of the vehicle to reverse. The method can drive the front wheels of the vehicle through the front-wheel motor when the R gear of the gearbox is unavailable, so that the vehicle reversing is realized, and the power during vehicle reversing is improved.

The invention relates to an input type power split hybrid tractor gearbox. An engine output shaft of an input type power split stepless speed change system is connected with a planet carrier, and a sun gear is connected with a rotating shaft of a power generator; a rotating shaft of a driving motor is connected with the gear ring, a walking driving gear of a walking driving set is connected to a planet carrier hollow shaft, a walking driven gear is connected to a walking output shaft, and the walking driving gear is constantly meshed with the walking driven gear. A driving driven gear of the four-wheel driving power set is connected to the four-wheel driving output shaft, and the four-wheel driving driven gear is constantly meshed with the walking driven gear. A PTO output shaft of the engine direct-drive output system is connected with the output penetrating shaft, and a hydraulic driving gear of the hydraulic pump driving set is connected to the PTO output shaft. The walking stepless speed change control system has the advantages of being high in integration, compact in structure, simple in transmission, capable of guaranteeing independent and stable power performance of high-power power output, hydraulic pump drive and four-wheel drive output while stably controlling walking stepless speed change, and capable of effectively reducing production and use cost.

Angle gear (100, 200) with an input shaft (102, 202) and an output shaft (104, 204) and a power split with at least two load paths between the input shaft (102, 202) and the output shaft (104, 204), wherein each of the load paths comprises exactly one gear section (106, 206, 208) between an input gear (103, 203) of the input shaft (102, 202) and an output gear (105, 205) of the output shaft (104, 204), and wherein the input gear (103, 203) and the output gear (105, 205) are each designed as a bevel gear.

The utility model relates to a front-drive multi-gear hybrid power transmission system and a vehicle, and the front-drive multi-gear hybrid power transmission system comprises an electronic continuously variable transmission which comprises a planetary gear mechanism composed of a sun gear, a planet carrier and a gear ring, an engine in transmission connection with the planet carrier through a clutch locking mechanism, a front-drive motor in transmission connection with the sun gear, and a gear ring transfer shaft connected with the gear ring; and the multi-gear power coupling mechanism comprises an intermediate transmission shaft and an output shaft which are parallel to each other and are arranged at an interval, a multi-gear gear shifting mechanism connected between the intermediate transmission shaft and the gear ring middle rotating shaft, and a reduction gear mechanism connected between the intermediate transmission shaft and the output shaft. According to the invention, front-drive multi-gear power split driving, front-drive motor multi-gear pure electric driving and front-drive out-of-gear series power generation functions can be provided. The front-drive multi-gear hybrid power transmission system is only matched with one multifunctional front-drive motor capable of achieving pure electric drive, power distribution and series power generation at the same time, and therefore the cost of a transmission assembly of the four-wheel-drive hybrid vehicle is effectively reduced.

The invention discloses a power split hybrid power system for a tractor, which comprises a frame, an engine, a power input shaft, a planetary gear mechanism, a generator, a driving motor, a power output shaft and a controller, the planetary gear mechanism comprises a first planetary gear assembly and a second planetary gear assembly, and the power input shaft and the power output shaft are coaxially arranged. The power input shaft is connected with the first planetary gear assembly, and the power output shaft is connected with the second planetary gear assembly; the controller is used for controlling the working states of the engine, the driving motor and the generator according to the working conditions of the tractor and adjusting the running mode of the tractor. According to the hybrid power system, a dual-motor structure is adopted to achieve power dividing, oil consumption of the engine is reduced, the problems that a traditional system is large in energy loss, low in reliability and the like are solved through the frame design structure and optimization of the component layout and the power transmission path of the hybrid power system, and the applicability and economical efficiency of the tractor in different operation scenes can be improved.

The application discloses a power split type hybrid power system, which comprises an engine, a generator, a driving motor, a clutch, a planetary gear mechanism, a reduction gear mechanism and a differential assembly. The clutch is matched with the planetary gear mechanism. The planetary gear mechanism comprises a ring gear, a sun gear and a planet carrier. The generator is connected with the sun gear through a transmission gear, and the driving motor is connected with the ring gear through a transmission gear. Through the coordination of the engine and the two sets of motors, various working modes such as pure electricity, hybrid power, pure engine and parking power generation are realized, the efficiency of the system is improved, and the fuel economy of the vehicle is improved.

The application discloses a kind of power split planetary gear test system and test method, the test system includes: for the first test motor of the power source to the sun gear of the measured power split planetary gear input, for the second test motor of the power source to the planet carrier input, for the third test motor of the power source to the ring gear input, for the first torque sensor of the physical parameter of the sun gear monitoring, for the second torque sensor of the physical parameter of the planet carrier monitoring, and for the third torque sensor of the physical parameter of the ring gear monitoring.The power split planetary gear test system and test method of the application provide a strong test matching system for the development of hybrid transmission, can solve the use of different characteristic parameters power planetary gear design, engine, generator parameter design, matching design, facilitate designer to better verify theoretical design parameter, and can shorten development cycle, so that the matching of engine, generator is more perfect.

The invention relates to an output type power split hybrid tractor gearbox. An engine output shaft of an output type power split stepless speed change system is connected with a generator and a gear ring, and a rotating shaft of the generator is connected with the gear ring; a rotating shaft of the driving motor is connected with the sun gear, and the PTO output shaft is sleeved with a planetary frame hollow shaft which can rotate; a walking driving gear is connected to the planet carrier hollow shaft, a walking driven gear is connected to the walking output shaft, and the walking driving gear is constantly meshed with the walking driven gear; the four-wheel-drive driven gear is connected to the four-wheel-drive output shaft, and the four-wheel-drive driven gear is constantly meshed with the walking driven gear; a PTO output shaft of the engine direct-drive output system is connected with the output penetrating shaft, and a hydraulic driving gear of the hydraulic pump driving set is connected to the PTO output shaft. The walking stepless speed change control system is highly integrated, compact in structure and simple in transmission, walking stepless speed change is controlled, and independent and stable power performance of high-power power output, hydraulic pump drive and four-wheel drive output can be guaranteed.

The application discloses a kind of 2 gear DHT power split hybrid vehicle Tipin_Tipout impact collaborative control method and device, it is related to new energy vehicle technical field, including the following steps: collecting accelerator pedal opening, engine output torque, motor output torque, speed, gear and work mode signal, the rate of change of accelerator pedal opening is calculated and is filtered, while calculating equivalent transmission ratio.The application realizes the continuous adjustment of torque change under Tipin and Tipout conditions by three power source collaborative control, and improves the adaptability under different environments by combining multi-dimensional working condition correction parameters;Through stable control collaborative adjustment, improve the controllability of wet road driving;Introduce sub-gear self-learning mechanism to maintain long-term control consistency;At the same time, optimize the energy recovery process, and have good platform adaptation ability and application promotion value.