130 results about "Power split" patented technology

The invention provides a power dividing type hybrid power tractor driving system. The power dividing type hybrid power tractor driving system comprises a power source and a power dividing type multi-mode switching mechanical transmission system, wherein the power source is composed of an engine, a P3 motor and a PS motor. The invention further provides a control method of the power split type hybrid power tractor driving system. Through the arrangement of the P3 motor, the PS motor, the power coupling mechanism, the clutch and the brake, energy distribution and efficient work of the engine are achieved. The device is compact in structure and good in dynamic property and economical efficiency, can realize multi-mode driving operation according to complex working conditions of the tractor, and has the advantages of interval stepless speed change, accurate control and the like.

A system including a engine having a low spool and a high spool, a first hybrid electric motor connected to the low spool and a second hybrid electric motor connected to the high spool. An auto-throttle controls an amount of power provided to the engine responsive to at least one aircraft parameter. A power splitting algorithm implemented between the auto-throttle and at least one of the first and second hybrid electric motors determines a power split dividing the total engine power into the power produced by burning fuel and electrical power provided to the at least one of the first and second hybrid electric motors responsive to control signals from the auto-throttle.

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 invention discloses a hybrid power system and a vehicle, and relates to the technical field of automobiles, and the hybrid power system comprises a power output shaft, a planet row structure, a power module, a coupling module and a locking module. Wherein the planet row structure comprises a first planet row and a second planet row, the first planet row and the second planet row are both coaxially arranged with the power output shaft, the first planet row comprises a first gear ring, a first planet carrier and a first sun gear, and the second planet row comprises a second gear ring, a second planet carrier and a second sun gear; according to the technical scheme, the hybrid power system with multiple modes is formed based on the double-planet-row structure and the corresponding coupling module and locking module. Wherein two pure electric modes, four motor direct drive modes, two power dividing modes and four hybrid power modes are mainly included. The two power dividing modes can serve as middle gears of direct-drive gear switching, and the smoothness of the vehicle in the gear shifting process and the smoothness of the vehicle in the starting process can be effectively improved.

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 discloses a hybrid electric vehicle driving transmission system and a transmission method thereof, and belongs to the technical field of automobile transmission. An engine is connected with an input shaft, a C2 clutch, a C1 clutch and a driving gear are arranged outside the input shaft, the C2 clutch is connected with a planet carrier, the planet carrier is provided with two planet wheels, the two planet wheels are both in meshed connection with a sun wheel and are in meshed linkage with a gear ring, and the gear ring is fixedly connected with the C2 clutch and the C1 clutch. The sun gear is connected with a rotor shaft of the second motor, a brake B1 is arranged outside the rotor shaft of the second motor, and the brake B1 is connected with the shell; the C1 clutch is connected with the driving gear, a rotor shaft of the first motor is connected with the motor gear, and the driving gear and the motor gear are both in meshed connection with the output unit. A multi-mode power system of pure electricity, series connection and parallel connection double gears, series-parallel power dividing, parking power generation and the like is constructed, and all-working-condition oil consumption optimization is achieved in cooperation with the planet row power dividing characteristic and motor speed regulation compensation.

The invention provides a vehicle control method and device, a controller and a vehicle. The method comprises the steps that when it is monitored that a vehicle is in a power split driving mode and in a driving working condition, a rear axle torque limit value can be determined according to current driving data of the vehicle; and then the larger value in the rear axle torque demand value and the rear axle torque limit value is selected as the target rear axle torque, so that the rear axle motor is limited to output the overlarge negative torque, the situation that the vehicle is unstable due to the fact that the front axle outputs the positive torque and the rear axle outputs the overlarge negative torque is avoided, and safe and stable operation of the vehicle is guaranteed.

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.

The present invention relates to an ultra-compact, power-splitting, detachable wind turbine main drive system, comprising a primary planetary gear train, a secondary planetary gear train, a supporting main structure, a generator, and a hub. The hub is supported on the supporting main structure via a main shaft bearing, the right side of the hub connected to a primary planetary carrier, which is connected to an input system. The primary planetary carrier is floatingly connected to a secondary ring gear via a floating spline sleeve, and the secondary ring gear is disposed on the secondary planetary carrier. The hub simultaneously drives the primary planetary carrier and the secondary ring gear, with the primary planetary carrier rotating the primary planetary gears, and the secondary ring gear rotating the secondary planetary gears, thereby achieving power splitting. The present invention significantly reduces the overall size of the wind turbine transmission chain, achieves high power density, is compact in structure, lightweight, and low in cost, and each level of components can be independently detached, making maintenance and replacement easy and cost-effective.

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 present invention discloses an 8-stage dual-mode logic-power split combined transmission, which relates to the field of heavy vehicle transmissions and includes: a single-row confluence planetary gear set, an input shaft, a first planetary gear set, a second planetary gear set, four clutches, and two brakes. The modular dual-mode logic speed-changing unit and the series-combined structure are used to efficiently increase or decrease the gear modes, so as to achieve a large range of changes in the transmission ratio; a single-row confluence mechanism is selected to reduce the complexity of the speed-changing system structure, and the problem that it is difficult for the single-row confluence mechanism to achieve multi-stage stepless speed change is solved by adjusting the shifting elements and the displacement ratio of the variable pump; by preferably the positive and negative changes and the change range of the variable pump displacement, that is, by limiting the rotation speed and steering corresponding to the input of the hydraulic transmission part, the circulating power phenomenon of the confluence mechanism is avoided, and the output power of the confluence mechanism and the overall efficiency of the speed-changing system are improved.

A drive system for a towing vehicle (10) pulling a towed powered device (12), the drive system comprising: a power generation unit (14) including a generator (16) for generating electrical energy; an electric drive motor (76) connected to a driven axle (78) of the towed device (12); a manually operable power distribution setting unit (54) via which a power split value is set by the operator, which determines the split of the electrical power between the towing vehicle (10) and the towed device (12); a vehicle speed sensor (57) for generating a vehicle speed signal; a power distribution unit (15) for controlling the distribution of electrical energy from the generator (16) to the drive motor (76) of the towed device (12); and a control unit (58) connected to the power distribution setting unit (54), the vehicle speed sensor (57), the power distribution unit (15), and an engine control unit (32), wherein the control unit (58) obtains an engine load factor from the engine control unit (32), a power split from the operator-controlled power distribution setting unit (54) and the vehicle speed sensor (57), wherein, in the event that the sensed engine load is greater than a load threshold and the vehicle speed is less than a speed threshold, the control unit (58) causes the power distribution unit (15) to distribute electrical power to the towing vehicle (10) and to the drive motor (76) of the towed device (12) as set by the power distribution setting unit (54);and wherein, in the event that a sensed engine load is greater than a load threshold and the vehicle speed is not less than the speed threshold, the control unit (58) causes the power distribution unit (15) to direct all electrical power to the towing vehicle (10);

The invention relates to the technical field of vehicles, in particular to a double-gear hybrid power system and a vehicle with the double-gear hybrid power system. The internal combustion engine or / and the first motor is / are connected with the front wheels or / and the rear wheels through a transmission unit. The transmission unit comprises a first transmission unit and a second transmission unit; the first transmission unit is connected with the second transmission unit through the clutch unit; the internal combustion engine is connected with the front wheel through the first transmission unit; the first motor is connected with the rear wheel through the second transmission unit; through cooperative use of the internal combustion engine, the first motor and the transmission unit, multi-mode driving of the power system can be achieved; the hybrid power architecture of a multi-gear series-parallel hybrid power and power dividing function mode is realized, the advantages of high power dividing energy utilization rate, driving comfort in a pure electric mode, high dynamic property in a parallel mode and the like can be combined, and multiple driving modes are provided to meet the requirements of road conditions and driving experience.

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 invention relates to the technical field of hybrid power vehicle control, and particularly discloses a motor control method for a power split type hybrid power vehicle under an emergency loading working condition, after a vehicle control unit recognizes that the vehicle is switched from a single-motor pure electric mode to a hybrid power mode, for a motor MG1, if the rotating speed of the motor MG1 is reduced to be smaller than-50 rpm, an improved I / F control strategy is adopted, and the speed of the motor MG1 is reduced to be smaller than-50 rpm; after the rotating speed of the motor MG1 is increased to be larger than 50 rpm, the improved I / F is switched back to the maximum torque current ratio control strategy, and the engine continues to be dragged to the target rotating speed; for the motor MG2, an adaptive sliding-mode observer is adopted to observe the extended counter electromotive force, an orthogonalization phase-locked loop is combined to extract rotor position and rotating speed information from the extended counter electromotive force, and meanwhile, the resistance, inductance and flux linkage of the motor MG2 are identified on line through least square method parameter identification with a forgetting factor and are fed back to the sliding-mode observer in real time. Therefore, the full-speed-domain stable operation of the motor in the process of converting the pure electric mode to the hybrid driving mode of the power split type hybrid vehicle is realized.

The invention belongs to the technical field of mechanical transmission, particularly relates to a power dividing transmission system design method based on a multivariable multi-constraint optimization algorithm, and aims at solving the technical problems that a traditional design method is low in design efficiency and an optimal design scheme is difficult to find. The method comprises the following steps: firstly, establishing a mathematical optimization model according to a target (minimum volume) pursued by parallel shaft gear power split transmission optimization design, optimized parameters (taking modulus, tooth width, tooth number and helical angle of a gear) and to-be-met design constraint conditions (center distance constraint, end face spacing constraint, strength constraint, inter-gear non-interference constraint and the like); solving an optimal solution by adopting an optimization algorithm of a genetic algorithm; and finally, through analysis and verification, a parallel shaft gear power split transmission sketch, a shaft system diagram and gear macroscopic parameters are output. The design efficiency and the design quality of the method are greatly improved.

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.