447 results about "Power performance" patented technology

The invention relates to the technical field of agricultural equipment, in particular to a hybrid tractor whole machine dynamic property evaluation method fusing multiple working condition parameters, which comprises the following steps: acquiring an environment working condition parameter set, an operation task parameter set and an energy flow dynamic parameter set in real time; a dynamic coupling relation mathematical model is constructed based on the parameter set, the whole machine dynamic property characteristic values of the steady state working point and the transient working point are calculated respectively, and a whole machine dynamic property evaluation index set is generated; inputting the evaluation index set into a hardware-in-the-loop simulation platform, and verifying the effectiveness of the evaluation indexes through multi-modal working condition simulation; and constructing a three-dimensional dynamic property evaluation map based on the verified evaluation indexes, dividing dynamic property partitions, outputting the dynamic property partitions to the vehicle-mounted intelligent terminal in real time, and generating a self-adaptive control instruction set when entering a failure area. According to the invention, multi-source information fusion modeling, all-working-condition dynamic response evaluation and visual map feedback can be realized, and the dynamic adaptability and regulation and control intelligence of the hybrid tractor in a complex operation scene are improved.

The invention relates to the technical field of electric vehicle thermal management, discloses an electric vehicle motor and driver integrated intelligent cooling system and a control method, and aims at solving the problems that an existing motor driver thermal management system is low in cooling efficiency, high in energy consumption, complex and insufficient in space utilization rate. The method comprises the following steps: acquiring operation, thermal state and environment data; constructing a collaborative thermal model and predicting a thermal load; generating an optimal cooling strategy based on the predicted value and the target; the cooling liquid pump, the three-way valve and the cooling fan are adjusted, and cooling resources are dynamically distributed to achieve collaborative cooling. The system comprises a data acquisition module, a collaborative thermal model construction prediction module, an intelligent decision control module and an integrated cooling circulation execution module. By the adoption of the technical scheme, the cooling performance can be effectively improved, system energy consumption and complexity are reduced, space layout is optimized, the service life of parts is prolonged, and the reliability, the power performance and the endurance of the whole vehicle are improved.

The utility model discloses a gearbox for an oil-electricity double-engine ship. The gearbox comprises a box body, the diesel oil input component comprises a first input shaft, a first driving gear is sleeved on the first input shaft, and the first input shaft is provided with a first transmission gear and a first clutch; the reversing shaft part comprises a reversing shaft, a second driving gear is sleeved on the reversing shaft, the reversing shaft is provided with a second transmission gear and a second clutch, and the second transmission gear is meshed with the first transmission gear; the motor input component comprises a second input shaft, the second input shaft is sleeved with a third driving gear in an empty mode, the third driving gear is meshed with a first driven gear, the second driving gear is fixedly sleeved with the first driven gear, and the second input shaft is provided with a third clutch; the output shaft component comprises an output shaft and a second driven gear, and the second driven gear is meshed with the first driving gear and the second driving gear. According to the scheme, the diesel engine or the motor is independently used for driving, intelligent switching of the diesel engine and the motor can be achieved at any speed, oil consumption is reduced, and power performance is improved.

The invention discloses a power control method for a hybrid power engineering vehicle and the engineering vehicle. The hybrid power engineering vehicle comprises a range extender system and a power battery. The method comprises the steps that vehicle working condition information and the charge state of a power battery are obtained; determining a current applicable power distribution mode according to the vehicle working condition information and the charge state; the power distribution mode refers to a control strategy for managing the output power of the range extender system and the power battery; and executing a power distribution mode to coordinate the output power of the range extender system and the power battery. Thus, based on the real-time running state and the energy state of the vehicle, the most suitable energy control strategy is dynamically and intelligently determined and executed, it can be ensured that instantaneous power outbreak and long-term fuel consumption economy can be flexibly considered in the vehicle running process, the balance between the power performance and the economy of the whole vehicle is achieved, and the vehicle safety is improved. And the energy management efficiency and the energy utilization level of the whole vehicle are improved.

The utility model discloses a container transport ship, and belongs to the technical field of ships, and the container transport ship comprises a ship body used for loading containers; the tail vane is mounted at the bottom of the stern end of the hull; the propeller is installed at the bottom of the stern end of the ship body, the propeller is set to be of a fixed pitch, and the propeller is used for providing advancing thrust; wherein the tail vane is closer to the end part of the ship body relative to the propeller, a bulge is arranged at the end part of the tail vane opposite to a middle shaft of the propeller, the surface of the bulge is an arc-shaped surface, and a gap is formed between the bulge and the end part of the middle shaft of the propeller. According to the invention, the fuel consumption is reduced, better power performance can be realized, meanwhile, the pollutant emission in the sailing process is also effectively reduced, and the low-carbon requirement is met.

The application provides a multi-directional joint module for a robot, and relates to a robot joint, which comprises a first rotating assembly having an end face gear rotating about a first axis, a second rotating assembly arranged on the first rotating assembly and rotating about a second axis, the first axis being orthogonal to the second axis, the second rotating assembly comprising a second rotating shaft, a first lateral gear being fixed on the second rotating shaft and engaged with the teeth of the end face gear, and an output unit being fixedly connected with the second rotating shaft and rotating about the second axis, the output unit being capable of realizing multi-directional rotation in a plane perpendicular to the first axis through the combined motion of the first and second rotating assemblies. Thanks to the central symmetrical arrangement of the second rotating assembly and the supporting assembly, the power performance and load capacity are significantly improved, and high integration and space utilization are realized.

The invention provides a method for dynamically adjusting the maximum power and torque of a vehicle. The method comprises the steps that multi-dimensional data related to driver behaviors, vehicle states and environmental factors are obtained; performing weighted calculation based on the multi-dimensional data to obtain a comprehensive score of the driver; determining the risk level of the driver according to the comprehensive score; and dynamically adjusting the maximum power and / or torque output by the vehicle according to the risk level. According to the method, a comprehensive driver risk assessment system is constructed, multi-dimensional information such as driver behaviors, historical records, vehicle health conditions and real-time environments is integrated, a more scientific and more accurate risk assessment model is constructed, and a safety assessment result is directly linked with vehicle power performance, so that the risk assessment efficiency is improved. Therefore, active intervention on high-risk driving behaviors is realized, accidents caused by power abuse are reduced from the source, the driving safety is effectively improved, and the accident rate is reduced.

The utility model belongs to the technical field of all-terrain vehicle power, and particularly relates to a hybrid all-terrain vehicle which comprises an engine. A crankshaft of an engine is connected with a generator, an engine connecting shaft gear is connected with one end of a clutch, the other end of the clutch is connected with a drive input shaft gear, the drive input shaft gear is in power connection with a drive motor, and the drive motor is meshed with the drive input shaft gear through a drive output shaft gear so as to transmit power to a front drive axle and a rear drive axle. The clutch is an embedded clutch and is embedded in a rotor of the driving motor; various driving modes such as pure electric driving, engine hybrid power and series connection range extending can be achieved, the power performance and fuel economy of the whole vehicle are improved, the maintenance cost of CVT belt replacement is saved, the reliability and transmission efficiency of a power system are improved, meanwhile, the requirements for the battery performance, the capacity, the cost and the weight are reduced, no endurance anxiety exists in field cross-country, and the power system is suitable for large-scale popularization and application. And the experience feeling is better.

The double-motor parallel joint assembly comprises a shank joint framework, a first running motor, a second running motor, a torque superposition component and running rolling wheels, a mounting cavity is formed in the bottom of the shank joint framework, the first running motor and the second running motor are both fixed in the mounting cavity, and the first running motor and the second running motor are arranged in the mounting cavity. A rotating shaft of the first driving motor and a rotating shaft of the second driving motor are both connected with the input end of the torque superposition part, and the output end of the torque superposition part is connected with the driving rollers. The first driving motor and the second driving motor are arranged, and the torque superposition part is arranged to realize parallel operation of the first driving motor and the second driving motor, so that the output torques of the two driving motors are superposed, and the output torque of the roller is improved; the robot can overcome larger friction force and resistance when climbing, crossing obstacles or moving on the uneven ground, and the power performance of the robot is enhanced.

A hybrid power drive system (100), comprising: an engine (10), a driving shaft (20), first electric motors (40), second electric motors (60), a planetary gear mechanism (30), and a limiting unit (50). The second electric motors are transmittingly connected to the driving shaft; the planetary gear mechanism comprises a first rotating member (31), a second rotating member (32), and a third rotating member (33) that can rotate coaxially; the first rotating member is connected to an output end of the engine, the second rotating member is transmittingly connected to the driving shaft, and the third rotating member is connected to the first electric motors; and the limiting unit is configured to limit the transmission of torque from the first electric motors to the engine and to form a torque transmission path between the first electric motors and the driving shaft. The system can ensure the power performance and economy of vehicles. In addition, the present invention further relates to a vehicle (200).

The invention provides a hybrid power control strategy method and system for a mining dump truck and related equipment, and relates to the technical field of new energy saving. The mining dump truck comprises a high-power engine, a medium-and-small-power engine and a power battery pack which serve as hybrid power sources; the method comprises the following steps: acquiring the whole vehicle power demand of the mining dump vehicle and the charge state of a power battery pack; and controlling the charging and discharging strategies of the high-power engine, the medium-and-small-power engine and the power battery pack based on the power demand and the charge state of the whole vehicle. The power battery can be used for energy supplement and regeneration recovery, and the energy-saving effect is remarkably improved on the premise that the power performance is guaranteed.

The invention discloses a vehicle control method and device, and the method comprises the steps that a vehicle control device can adjust a vehicle to a target mode, and the anti-carsickness function of the vehicle in the target mode is in an enabled state; the anti-carsickness function presets a human body whole body vibration measurement evaluation index in a corresponding preset range, and the human body whole body vibration measurement evaluation index is associated with at least one of the following items: a frequency weighted acceleration value, a frequency weighted acceleration root-mean-square value, a maximum transient vibration value MTVV, a motion sickness dose value MSDV or a vibration dose value VDV; and adjusting the torque of the vehicle to enable the whole body vibration measurement evaluation index to be within a corresponding preset range. Therefore, on the premise of responding to the real driving intention of the driver, the output torque is adjusted to relieve the carsickness feeling of passengers, and the purpose of considering the real driving intention of the driver and the dynamic property of the vehicle is achieved.

The invention provides a power performance simulation checking method and device for an electric vehicle, and solves the technical problem that the development period and the development capability of the whole vehicle are deficient due to the lack of power performance simulation checking service in the overall design of the existing vehicle. The method comprises the following steps: acquiring an initialization parameter of a subsystem related to a vehicle dynamics model; forming a power simulation model of the power system according to the initialization parameters; calculating the operation power and the operation torque of the driving motor according to the power simulation model, and forming a performance characteristic fitting curve according to the rotating speed of the driving motor; fitting a maximum acceleration curve according to the performance characteristic fitting curve in combination with the initialization parameters; determining the acceleration time for the vehicle to reach the target speed according to the maximum acceleration curve; and determining the maximum speed achieved by the vehicle according to the maximum acceleration curve in combination with the initialization parameters. A simulation check service is provided for the overall design of the vehicle, the development period of the whole vehicle is shortened, and the digital research and development capability of the electric vehicle is effectively improved.

The application discloses a kind of humanoid robot linear joint permanent magnet motor design optimization method, this method includes: based on the mechanical characteristics of human gait cycle to establish knee joint connecting rod mechanism dynamics model, extract characteristic working condition point and establish screw-motor electromechanical matching criterion, using Latin hypercube sampling to obtain design sample point, establish permanent magnet motor multi-objective optimization model with limit torque, torque ripple, efficiency as target, then introduce evolutionary algorithm for global optimization, obtain Pareto non-inferior solution set;Finally, based on CRITIC-TOPSIS evaluation method, fusion objective data characteristics and subjective working condition demand, determine the optimal design scheme from Pareto non-inferior solution set.The design optimization method of the application can define the design requirements of permanent magnet motor, and can also scientifically distribute the target weight, ultimately can obtain the permanent magnet motor scheme highly matched with specific joint working condition, effectively improves the power performance and operating stability of humanoid robot linear joint.

The invention belongs to the technical field of internal combustion engine power devices, and discloses a double-piston mechanism for an internal combustion engine, which comprises a cylinder body, and more than one cylinder is arranged in the cylinder body; an air inlet seat and an air outlet seat are installed on the upper portion and the lower portion of the cylinder body respectively, an air inlet pipe and an air outlet pipe are arranged in the air inlet seat and the air outlet seat respectively, and an air inlet channel and an air outlet channel are arranged in the air inlet pipe and the air outlet pipe respectively. A control device for gas distribution is arranged at the corresponding position of each cylinder; a high-pressure oil pump is arranged outside the cylinder body, and the high-pressure oil pump is communicated with the oil sprayer through a high-pressure oil pipe; a piston assembly I and a piston assembly II are symmetrically arranged in each cylinder body, and a bevel gear set I and a bevel gear set II which are matched with the piston assembly I and the piston assembly II to transmit power are further arranged in each cylinder body. The power performance of the internal combustion engine can be improved through the two piston assemblies, the device is small in size and light in weight, and single-machine fuel consumption and operation cost are effectively reduced.

The embodiment of the application discloses an energy-saving control method and device for an electric truck and a medium. The method comprises the following steps: determining a preset reference motor efficiency high-efficiency area based on vehicle information of the electric truck; obtaining current road condition information and accelerator pedal opening degree information, and adjusting the preset reference motor efficiency high-efficiency area based on the current road condition information and the accelerator pedal opening degree information to obtain an actual motor efficiency high-efficiency area; starting a vehicle preset economy mode when the electric truck is in a non-full load state; obtaining a current rotating speed and a current torque of the electric truck when the vehicle is running in the vehicle preset economy mode; and adjusting a driving rotating state of the electric truck based on the actual motor efficiency high-efficiency area, the current rotating speed, the current torque and a preset double-speed-ratio drive axle, so as to realize energy-saving control of the electric truck. Through the above method, the vehicle energy-saving can be realized while the power performance of the vehicle is maintained.

The present invention provides a method for determining an engine's exhaust pressure, comprising the following steps: obtaining the flow rate, flow area, and flow coefficient of an equivalent nozzle, as well as the upstream temperature and the pressure ratio of the downstream pressure to the upstream pressure of the equivalent nozzle. The equivalent nozzle is a nozzle model established based on the exhaust pipe structure. The upstream pressure of the equivalent nozzle is determined based on the flow rate, upstream temperature, flow area, flow coefficient, and pressure ratio. The exhaust pressure is determined based on the upstream pressure of the equivalent nozzle. By introducing influencing factors such as the flow cross-section and flow coefficient, the correct calculation of hot exhaust gas in the engine cylinder, and thus the correct calculation of the fresh charge, is ensured, providing accurate input for the engine's fuel consumption, emissions, safety, and power performance.

The invention relates to the technical field of new energy automobile power system design and optimization, and discloses an intelligent optimization method for the transmission speed ratio of an electric truck, which comprises the following steps of: 1.1, performing matching and parameter configuration on the power, the torque and the rotating speed of a driving motor according to the whole vehicle parameter, the performance index and the working condition load characteristic of the electric truck; 1.2, performing optimization configuration on energy, capacity and voltage parameters of a power battery based on the energy consumption characteristic of the whole vehicle and the endurance mileage requirement; 1.3, analyzing constraint conditions which need to be met by the transmission speed ratio, wherein the constraint conditions comprise the maximum vehicle speed, the gradeability and the acceleration performance. The transmission speed ratio of the electric truck is optimized through the deep Q network improved multi-objective evolutionary algorithm, dynamic property and economic indexes can be comprehensively considered, and multi-objective optimization of transmission speed ratio parameters is achieved. Compared with a traditional optimization method, the power performance indexes such as acceleration time and gradeability can be effectively balanced, energy consumption per hundred kilometers can be remarkably reduced, and the economical efficiency of the whole vehicle is improved.

This invention discloses a method and apparatus for determining the power limit value of a power battery. The method includes: acquiring target operating condition data of the vehicle; determining a first power limit ratio value of the power battery in a pulse temperature rise table based on a first temperature value and the target temperature value of the power battery; determining a second power limit ratio value of the power battery based on the vehicle's power performance target data and target evaluation data; determining the minimum value between the first and second power limit ratio values ​​as the target power limit ratio value of the power battery; and determining the power limit value of the power battery based on the target power limit ratio value and the allowable power value of the power battery. This invention solves the technical problems that high-temperature power limit protection methods for batteries cannot cover operating conditions with fast vehicle speed response, and cannot simultaneously consider the safety of battery and vehicle use, vehicle power performance, and user experience.

The invention discloses a dual-bearing positioning planetary gear type middle motor, which comprises a shell assembly, a controller assembly, a planetary speed reduction assembly and a rotor assembly, and is characterized in that all core transmission parts coaxially rotate around a main shaft to form a compact axial layout; the main shaft adopts a double-bearing positioning structure, so that the rotation stability and the positioning precision are improved. The planetary reduction assembly is a core adjusting mechanism, an outer gear ring can rotate forwards and backwards under the transmission cooperation of an adjusting motor, a worm and a worm gear ring, and then the reduction ratio is flexibly adjusted. The shell assembly and the controller assembly adopt a double-sealing structure to improve the waterproof performance, a torque sensor is arranged in the second shell, the detection end of the torque sensor is connected with a spindle spline, and intelligent adjustment of the reduction ratio is achieved in cooperation with a controller. The device has the advantages of being compact in structure, small in size, small in vibration, adjustable in reduction ratio, reliable in sealing and high in intelligent degree, can adapt to different driving working conditions of the light electric vehicle, and improves the power performance and the cruising ability.

The invention discloses an energy management method, device and equipment of a hybrid power system and a storage medium. The method comprises the steps that a five-point control strategy of an engine is determined through a multi-island genetic algorithm and a target optimization function, and the target optimization function takes the minimum energy consumption as an optimization target; determining a power distribution strategy of a range extender and a power battery by combining a power following control strategy with the five-point control strategy; determining a power change rate limiting coefficient of the range extender through a fuzzy control strategy according to the real-time running state data of the vehicle; and determining the final power of the range extender and the power battery based on the power change rate limiting coefficient and the power distribution strategy. According to the method, the genetic algorithm is introduced, the power following control strategy and the fuzzy control strategy are combined to determine how to distribute the power of the range extender and the power battery, the hybrid power system can give consideration to the dynamic property and the economical efficiency under various working conditions, and efficient energy management is achieved.

The utility model belongs to the field of power transmission, and particularly relates to a driving system and an automobile. The driving system comprises a first input shaft, a second input shaft, an intermediate shaft, four transmission assemblies, two gear switching assemblies and a controller, the first input shaft is used for being connected with a first power source and a second power source, the second input shaft is used for being connected with a third power source, and the intermediate shaft is arranged between the first input shaft and the second input shaft; the first transmission assembly and the second transmission assembly are both connected with the first input shaft and the intermediate shaft, and the third transmission assembly and the fourth transmission assembly are both connected with the second input shaft and the intermediate shaft. The controller is used for controlling the first gear switching assembly and the second gear switching assembly to selectively transmit power to the intermediate shaft through at least one of the four transmission assemblies so as to achieve multi-gear switching. The driving system provides a wider speed ratio selection range, and different power sources can operate in respective high-efficiency areas for a long time, so that the dynamic property and the economical efficiency of the whole vehicle are improved.

The invention relates to an oil pump, an engine and a motorcycle. The oil pump comprises a pump body and a pressure relief device. An oil inlet cavity, an oil outlet cavity and an exhaust structure are arranged in the pump body. The pressure release valve comprises a valve body, a valve element and an elastic piece connected with the valve body, the valve body is connected with the pump body, a cavity, a first exhaust hole, a second exhaust hole, an oil inlet and an oil outlet are formed in the valve body, the first exhaust hole, the second exhaust hole, the oil inlet and the oil outlet can be communicated with the cavity, and the valve element can reciprocate in the cavity so as to be switched between the first position and the second position. When the valve element is located at the first position, the valve element blocks a passage between the oil inlet and the oil outlet and enables the first exhaust hole to be communicated with the second exhaust hole through the cavity. When the valve element is located at the second position, the valve element opens a passage between the oil inlet and the oil outlet and blocks a passage between the first exhaust hole and the second exhaust hole. The engine oil pump can effectively prevent engine oil from leaking at the exhaust structure, and is favorable for improving the power performance of an engine and the overall performance of a motorcycle.

The embodiment of the application discloses a bulldozer power adjustment method, device, bulldozer, program product and storage medium, and the method comprises the following steps: when the hydrostatic bulldozer is in a working state, the engine speed of the hydrostatic bulldozer is acquired in real time; whether the hydrostatic bulldozer is in a large load mode is determined based on the engine speed; when the hydrostatic bulldozer is in the large load mode and the engine speed does not satisfy a preset condition, the distributable power of a fan motor of the hydrostatic bulldozer is determined based on the engine speed; and the distributable power is distributed to the engine through a preset control algorithm until the distributable power is distributed to the fan motor when the engine speed satisfies the preset condition. The method of the application reasonably distributes the power of the engine under the premise of meeting the heat dissipation demand of the bulldozer, improves the power performance and operation efficiency of the bulldozer, reduces power loss, avoids the situation of insufficient power performance, and thus improves the construction efficiency and driving experience.

The application relates to the technical field of electric automobile power drive control, and discloses a high-speed energy-saving drive system based on motor alternate starting and stopping and group power battery rotation, which comprises a vehicle controller, two or more drive motors, independent motor controllers, a power coupling disengaging mechanism and group power batteries; when the vehicle enters a high-speed driving working condition, the vehicle controller controls the entry into an alternate driving mode: only one motor works at the same time, and the remaining motors are powered off and mechanically disengaged to eliminate the drag loss; the motors are rotated according to a period, a temperature or an efficiency threshold value; the group power batteries are one-to-one corresponding to the motors and are synchronously rotated to supply power, so that the battery discharge rate is reduced; the system makes the motor keep operating in a high-efficiency interval, reduces the continuous large-current discharge loss and heating, thereby reducing the power consumption of the vehicle in high-speed driving, improving the real high-speed endurance, and automatically switching to multi-motor parallel driving in complex working conditions such as sudden acceleration and climbing, so that the energy saving and power performance are considered.

The invention relates to the field of vehicle control of pure electric vehicles, in particular to a pure electric vehicle ECO mode self-adaptive torque control method based on a fuzzy algorithm, which comprises the following steps: acquiring a reference boundary curve of driving and feedback torque of an ECO mode; according to a motor rotating speed interval, a plurality of fuzzy control areas are predefined between the reference boundary curves, and each fuzzy control area is associated with a fuzzy gain strategy which aims at a set driving scene and takes a vehicle real-time state as input; vehicle state parameters including the motor rotating speed, the whole vehicle load, the road gradient and accelerator pedal information are obtained in real time; according to the vehicle state parameters, judging a current driving scene and matching the current driving scene to a corresponding fuzzy control area; and performing real-time compensation on the reference torque of the ECO mode by applying a fuzzy gain strategy associated with the fuzzy control region, and outputting a final torque instruction. And on the premise of meeting the power performance and the comfort performance, the cruising ability is further improved.

This invention relates to an electronic gear shifting device for electric motorcycles, comprising an electronic shifting unit, an electronic clutch unit, and a throttle position sensor. Based on the rider's operation, the device outputs a shift signal, a clutch signal, and a throttle opening signal. A vehicle controller receives these signals and determines a target gear for the electric motorcycle. The vehicle controller then looks up a motor torque command based on the target gear and outputs the command to a motor controller. The motor controller then controls a power motor of the electric motorcycle, enabling the electric motorcycle to simulate the power performance of a conventional geared motorcycle without the need for a physical clutch or gearbox.

This utility model relates to a highly integrated powertrain mechanism for a pure electric all-terrain vehicle, including a motor and a cooling water circulation channel. The power output end of the motor is connected to the gearbox of the all-terrain vehicle. The motor is equipped with a first housing and a second housing. The cooling water circulation channel is connected in series inside the motor, the first housing, and the second housing. The inlet and outlet ports of the cooling water circulation channel are connected to the water-cooling system of the all-terrain vehicle. The first housing houses an on-board charger and an on-board power converter, while the second housing houses a motor controller and a power distribution unit. The wiring between the motor and the first housing uses a stacked busbar and a PCB harness, and the wiring between the first and second housings also uses a stacked busbar and a PCB harness. This highly integrated powertrain mechanism for a pure electric all-terrain vehicle integrates existing pure electric all-terrain vehicles into a coordinated whole, resulting in high energy conversion efficiency and strong power performance.

The application relates to the technical field of new energy automobile power system design and optimization, and discloses an intelligent optimization method for transmission speed ratio of an electric truck, which comprises the following steps: 1.1. According to the whole vehicle parameters, performance indexes and working condition load characteristics of the electric truck, the power, torque and rotating speed of the driving motor are matched and parameter configured; 1.2. Based on the whole vehicle energy consumption characteristics and the endurance mileage demand, the energy, capacity and voltage parameters of the power battery are optimized and configured; 1.3. The constraint conditions that the transmission speed ratio needs to meet are analyzed, including the maximum vehicle speed, climbing ability and acceleration performance. The transmission speed ratio of the electric truck is optimized through a multi-objective evolutionary algorithm improved by a deep Q network, the power performance and economic performance indexes can be comprehensively considered, and multi-objective optimization of the transmission speed ratio parameters is realized. Compared with the traditional optimization method, the application can not only effectively balance the power performance indexes such as the acceleration time and the climbing ability, but also significantly reduce the energy consumption per 100 kilometers, and improve the economy of the whole vehicle.

The utility model discloses a driving assembly of a vehicle and the vehicle, and relates to the field of vehicles, the driving assembly of the vehicle comprises an engine and a first planet row, the engine is selectively combined with or disconnected from a first planet carrier of the first planet row; the first motor is in transmission connection with a first sun gear of the first planet row, the first planet carrier is selectively locked, and a first gear ring of the first planet row is selectively combined with or disconnected from the first planet carrier; the second motor is in transmission connection with the first gear ring and a second sun gear of the second planet row, a second gear ring of the second planet row is selectively locked, and the second motor is selectively combined with or disconnected from the second gear ring; and the output shaft is in transmission connection with a second planet carrier of the second planet row. Therefore, the driving assembly is simple and reasonable in structure and compact in layout, the number of parts can be reduced, the weight and cost of the driving assembly can be reduced, and in addition, the driving assembly gives consideration to fuel economy on the basis of having excellent power performance.