143 results about "Electric traction" patented technology

A mobile device (10) that can be connected to an OBD2 interface (9) of an electrically powered motor vehicle (1) is designed to read data relating to the state of charge of an electric traction battery (2) of the motor vehicle (1) from the motor vehicle (1) via the OBD2 interface (9) and to transmit it to an external device (12) outside the motor vehicle (1).

The invention discloses a harmonic suppression method and system of a rail transit electric traction system. The system comprises a traction unit harmonic response acquisition module, a traction group construction and intra-group influence analysis module, a traction group collaborative behavior analysis module, a collaborative suppression strategy generation module and a suppression resource regulation and control module. The method comprises the following steps: dividing a plurality of traction units on the same train into traction groups, analyzing harmonic response information of the traction units on a traction group level to generate comprehensive harmonic influence characteristics, analyzing action results of the plurality of traction groups on a traction power supply section level, and judging whether a harmonic collaborative amplification or collaborative instability trend exists or not; and thus, a collaborative harmonic suppression strategy for the traction group or the traction unit is generated. Through differential regulation and control on harmonic suppression resources and in combination with feedback correction, dynamic adjustment of a harmonic suppression process is realized, and pertinence of harmonic suppression under a complex operation condition and operation stability of a traction power supply system are improved.

An electric traction axle / beam, e-axle / e-beam, for a vehicle comprising at least one electric machine, a pair of drive shafts each connected to a respective wheel of the vehicle and a transmission chain operatively connecting the electric machine to the pair of drive shafts,the transmission chain comprising a first transfer system, a second transfer system, and a differential unit operationally interposed in series between them,the drive shafts being coaxial to a longitudinal axis of the axle, the electric machine being subtended by a parallel and separate axis of the longitudinal axis.

The invention discloses a pipe diameter self-adaptive electric traction type threading apparatus for building electrical construction, and particularly relates to the technical field of electric traction type threading apparatuses, the threading apparatus comprises a hand-held threading apparatus body provided with a wire conduit, and the end part of the wire conduit is provided with an inclined pipe; elastic limiting plates which are arranged in a circular array mode and attached to the wire are movably arranged on the inner side of the end of the inclined pipe, and curved surface parts arranged on the elastic limiting plates face a port of the inclined pipe and protrude out of the port of the inclined pipe. According to the electric traction type threading apparatus, the curved surface part faces the port of the inclined pipe and protrudes out of the port, so that the threading apparatus can be directly attached to the surface of a wire, the threading apparatus is allowed to adapt to wires with different pipe diameters, meanwhile, the elastic limiting plate can reduce rigid contact between the wire and the pipe opening, direct friction between the wire and the edge of the fixed pipe opening is avoided, and the threading effect is improved. And the abrasion problem caused by sliding friction between the wire and the port corner is reduced.

The application provides a mobile filter cake crushing device and a plate-and-frame filter press, wherein the mobile filter cake crushing device comprises a mobile vibration and positioning integrated mechanism, a filter cake crusher, a guide rail, a vibration rod, a homing contactor and a return contactor; the mobile vibration and positioning integrated mechanism moves along the guide rail with the filter cake crusher under the traction of an electric traction mechanism. When discharging is completed, the mobile vibration and positioning integrated mechanism moves along the guide rail with the filter cake crusher under the traction of an electric driving mechanism, is automatically positioned at the lower part of the discharging filter plate, and vibrates and crushes the large filter cake. The application solves the problem of how to crush large filter cake to prevent them from forming an arch in the hopper below the plate-and-frame filter press.

The invention discloses a motor constant speed control method for an electric tractor, and relates to the technical field of line construction, and the method comprises the steps: a tension detection module which collects a tension signal of a wire in the paying-off operation of a high-voltage transmission line in real time; the frequency identification module is electrically connected with the tension detection module and is used for performing frequency domain analysis on the tension signal and identifying a periodic disturbance frequency corresponding to tension fluctuation; the self-adaptive control module comprises a sliding mode controller, and the sliding mode surface design of the sliding mode controller is combined with the periodic disturbance frequency, and a sliding mode control signal is generated based on a traction machine motor rotating speed feedback signal and a rotating speed instruction signal. The sliding mode controller is combined with disturbance frequency design, the anti-interference capacity is high, even if external disturbance exists, constant-speed operation of a traction machine motor can be maintained, paying-off speed fluctuation is reduced, the straightness and tension consistency of wire laying are guaranteed, the operation risk is reduced, the overall efficiency is improved, and stable constant-speed and tension control is achieved; and the manual intervention and fault shutdown times are reduced.

A vehicle system for an electrified vehicle that provides cost information for operating the electrified vehicle in a drive mode includes an electric traction motor configured to provide drive torque to a plurality of wheels, a high voltage battery system configured to power the electric traction motor, one or more sensors configured to monitor tire wear of each wheel of the plurality of wheels, and a human machine interface (HMI) configured to provide a plurality of user selectable drive modes. A controller is configured to detect a user selected drive mode, receive tire cost data for each wheel, receive tire wear data from the one or more sensors, determine a tire wear cost for operating the electrified vehicle in the user selected drive mode, based on the tire cost data and the tire wear data, and display the tire wear cost on the HMI.

The invention discloses a multi-standard power supply system and method for a locomotive test, and relates to the technical field of test power supplies, and the structural design of the system is as follows: an input power supply is a three-phase alternating current 10kV power supply; the high-voltage switch K realizes access control and isolation of the system and a public power grid, the connection reactor L realizes energy buffering and inhibits switch ripples in output current, and the soft charging circuit pre-charges the three-stage converter. The three-level converter converts three-phase alternating current 10kV into DC1500 / 750V and outputs the DC1500 / 750V to the direct-current bus, one path of the direct-current bus supplies power to a subway vehicle test line, and the other path of the direct-current bus is inverted into single-phase alternating current 25kV through the output inverter and supplies power to a railway locomotive test line. According to the invention, alternating current test conditions of railway electric traction locomotive vehicles and direct current test conditions of subway vehicles can be satisfied, reliability and quality of power supply are ensured, repeated construction is reduced, and resource waste is avoided.

The invention relates to the field of electric hoists, and discloses a traction and hoisting dual-purpose direct current lithium battery type traction machine which comprises a traction machine body, a rope drum arranged in the traction machine body and a steel wire rope wound on the rope drum, and further comprises a brake mechanism, a traction mechanism, a hoisting mechanism and a hoisting mechanism, and the rotation of the rope drum is controlled by a permanent magnet brushless direct current motor arranged on the traction machine body; the self-locking device is in transmission connection between the output end of the permanent magnet brushless direct current motor and the rope drum and can be self-locked when the rope drum is to be driven to rotate reversely by external force so as to prevent the rope drum from rotating reversely; the wire arranging mechanism is provided with a guide part capable of guiding the steel wire rope in the axial direction of the rope drum, a brake mechanism arranged in the wire arranging mechanism can prevent the rope drum from rotating reversely under the action of external force, so that a traction machine can stably and vertically hoist a heavy object in the air, and the arranged wire arranging mechanism can guide the winding of the steel wire rope; when the tractor horizontally drags a heavy object, the steel wire rope can be tidily wound on the rope drum, so that the tractor realizes the dual purposes of traction and hoisting.

The invention relates to a method for controlling an electric all-wheel drive train of a motor vehicle, in which an electronic computing device determines a total torque to be implemented by the driver and a current axle speed of the motor vehicle (V1), a motor torque to be provided by the respective electric traction motors of the motor vehicle to achieve the total torque is determined using a predetermined characteristic map (V2), and the respective electric traction motors are individually controlled (V3) to trigger the provision of the determined respective motor torque by the respective electric traction motor, wherein the characteristic map contains values ​​for different combinations of total torques and axle speeds of the motor vehicle desired by the driver.The respective motor torques to be provided individually by all electric traction motors of the motor vehicle are specified.

The invention relates to a motor-gearbox assembly (1) for an electrically driven motor vehicle, comprising at least one electric traction machine (5), at least one gearbox arrangement (7) which is operatively connected to the electric traction machine (5), and at least two wheel drive shafts (3) which are arranged coaxially with a drive axle (4) of the motor vehicle and are operatively connected to the gearbox arrangement (7). The at least one electric traction machine (5) and the at least one gearbox arrangement (7) are arranged within a housing (2) of the motor-gearbox assembly (1). Functional components and / or functional regions of the at least one electric traction machine (5) are formed by the housing (2) of the motor-gearbox assembly (1).

A hybrid electric vehicle (HEV) includes an internal combustion engine, an electric traction motor, and a motor / generator configured to drive the internal combustion engine or be driven by the internal combustion engine to generate electricity to charge a high voltage battery and / or drive the electric traction motor. An exhaust aftertreatment system includes a gasoline particulate filter (GPF), and a control system includes a controller for monitoring and performing a regeneration operation of the GPF. The controller is programmed to determine the GPF needs to be regenerated, and determine if a temperature of the GPF meets or exceeds a predetermined threshold indicating a GPF regeneration can occur. Upon an engine shutdown event, if the temperature meets or exceeds the predetermined threshold, the controller gradually spins down a speed of the internal combustion engine in fuel shut-off to generate a flow of air to the GPF to initiate a GPF regeneration.

A working vehicle including a ground-engaging propulsion structure, an electric traction motor for driving the ground-engaging propulsion structure, a battery for powering the electric traction motor, and a controller. The controller is configured to: a) determine whether the working vehicle is positioned on an uphill gradient; b) determine whether a state of charge of the battery is below a charge threshold; and c) when it is determined that the working vehicle is positioned on an uphill gradient and the state of charge is below the charge threshold, limit a power consumption of the electric traction motor to a restricted power consumption which is less than a maximum power consumption of the electric traction motor.

Method for exhaust aftertreatment in a motor vehicle in which an exhaust gas flow (22) coming from an internal combustion engine (12) operating in a high load range is cooled in a braked exhaust gas turbocharger (20) and The cooled exhaust gas flow (28) coming from the exhaust gas turbocharger (22) is subsequently fed to an exhaust gas catalyst (24), wherein the exhaust gas turbocharger (20) is braked by an electric machine coupled to the exhaust gas turbocharger (20) and operated in generator mode characterized by the fact that the electrical energy generated in the generator operation of the electric machine is supplied to an electric traction machine (14) for the electric drive of the motor vehicle.

The invention relates to a method for controlling an electric traction drive machine of an electric motor vehicle drive, wherein a torque and a rotation speed of the traction drive machine is variably adjusted using a drive converter, in a drive mode of the motor vehicle the traction drive machine is operated as a motor and generates a drive torque by way of which drive wheels of the motor vehicle are driven, in a braking mode of the motor vehicle the traction drive machine is operated as a generator via the drive wheels of the motor vehicle and generates a braking torque by way of which the drive wheels of the motor vehicle are braked; for controlling the rotation speed of the traction drive machine, the current rotation speed of the traction drive machine is detected or calculated and is fed to the drive converter as an actual rotation speed, wherein the actual rotation speed is generated by smoothing the current rotation speed, and in the braking mode the braking torque is adjusted as a function of the actual rotation speed and / or the current vehicle speed. The method according to the invention is characterized in that in the braking mode the braking torque is additionally adjusted as a function of an at least indirectly detected current vehicle deceleration.

The invention relates to a method for controlling an electric all-wheel drive train of a motor vehicle, in which a total torque currently desired by the driver and to be implemented and a current axle speed of the motor vehicle are determined (V1) by means of an electronic computing device, a motor torque to be provided for achieving the total torque of respective electric traction machines of the motor vehicle is determined (V2) using a specified characteristic map, and the respective electric traction machines are individually controlled (V3) in order to initiate the process of the determined respective motor torque being provided by means of the respective electric traction machine, respective motor torques to be individually provided by all of the electric traction machines of the motor vehicle being specified in the characteristic map for different combinations of total torques and axle speeds of the motor vehicle desired by the driver.

There is described a method which makes it possible to operate a synchronization of the rotational speed of an electric traction motor, the connection whereof to one or more corresponding drive wheels of an axle can be selectively activated or deactivated by means of one or more corresponding engagement devices, by controlling, and specifically by limiting, the torque thereof in order to reach the target of rotational speed which achieves synchronization, so as to comply with the limits of the power absorbed and generated by the motor and with the torque limits envisaged by the same motor. Moreover, the method ensures a complete safeguard of the high-voltage battery supplying each electric traction motor, together with an optimal use of the torque and the electrical power available for the synchronization, thus reaching said synchronization as rapidly as possible, so as to have the traction assembly available for the torque delivery.

A fuel cell electric vehicle (FCEV) includes an electric traction motor configured to drive the FCEV and generate power through regenerative braking, a high voltage (HV) battery system including a HV bus and a HV battery configured to power the electric traction motor, and a fuel cell stack (FCS) configured to generate electricity to recharge the HV battery and / or power the electric traction motor. A powertrain control system for preventing over-voltage of the HV bus and HV battery includes a controller having one or more processors configured to control (i) a fuel cell power limit of the FCS, and (ii) a regenerative braking power limit of the electric traction motor. The controller is programmed to measure a voltage of the HV battery system, and selectively limit the fuel cell power limit and / or the regenerative braking power limit when the measure voltage exceeds a predetermined threshold.

Method for heating a coolant of an electrical traction machine of a motor vehicle, the electrical machine including, in addition to the coolant, a stator including a polyphase winding, the stator being in heat exchange with the coolant, a rotor, and an inverter / rectifier supplying power to the polyphase winding. The inverter / rectifier includes a plurality of switching cells controlled by a control device. The control device of the inverter / rectifier is configured to control the switching cells so as to short-circuit the polyphase winding in predetermined conditions for the purpose of heating the coolant.

A cooling system for an electric traction machine for a motor vehicle, including a circuit system for conducting a first coolant to be circulated, a first circulation pump for conveying the first coolant in the circuit system, an AC housing for an AC connection for the electric traction machine, and a motor inlet connection for fluidly connecting the circuit system on the input side to the electric traction machine to be temperature-controlled. The cooling system further includes a motor outlet connection for fluidly connecting the circuit system on the output side to the electric traction machine to be temperature-controlled, a first heat exchanger for dissipating heat from and / or supplying heat to the first coolant to be circulated in the circuit system, and a first main line, by which the first heat exchanger and the AC housing are fluidly connected to one another.

The invention relates to the technical field of railway electric traction transmission, in particular to an irregular wheel wear detection method based on stator current analysis, which comprises the following steps of: constructing an electromechanical coupling model of a high-speed train traction transmission system based on a traction variable-current driving model and a train-track coupling power model; secondly, based on an electromechanical coupling model, the influence of irregular wear of the wheel on electrical parameters in an electric driving system is analyzed, and the frequency relation between irregular wear excitation and the electrical parameters (stator harmonic current) is established; and by constructing a comb filter based on variable mode decomposition, accurate capture of wheel wear related harmonic waves in stator current is realized, so that irregular wear of the wheel is detected, additional installation of a sensor is not needed, the cost is low, the method is not liable to be interfered by the external environment, and the method has relatively good engineering applicability.

The invention relates to an assembly method for assembling a battery pack intended to equip an electric traction vehicle, the battery pack comprising a plurality of electrochemical cell modules, the battery pack comprising a junction box, the method comprising: a- assembling the modules one after the other in a housing, b- assembling a connector (3) on a rear riser wall, c- assembling the junction box onto the connector by moving it from top to bottom (F3) relative to the connector assembly, causing, by means of at least one centering ramp, a realignment of the junction box along the transverse axis (Y), d- screwing in a first screw (V1) and a second screw (V2) to tighten respectively the first and second terminals (51, 52) of the junction box onto the first and second pins (11, 12) of the connector. Figure 2

The utility model provides an electric tractor power distribution device with coordinated double electric drive axles, which relates to the technical field of electric tractor power distribution devices and comprises a first drive axle body and a second drive axle body. Pressure detection devices are arranged at the positions, close to the edges of the two sides, of the outer surfaces of the first drive axle body and the second drive axle body correspondingly, the four pressure detection devices comprise fixing plates correspondingly, and a plurality of evenly-arranged round holes are formed in the outer surfaces of the four fixing plates correspondingly. According to the device, the pressure detection device is arranged, when the pressure borne by the rubber sleeve is larger, the extrusion of the rubber sleeve on the movable block is larger, at the moment, the deformation generated by the spring is larger, data are transmitted to the electronic controller through the spring force measurement sensor, power is reasonably distributed through the electronic controller, and the power is more stable. The traction force of the electric tractor is optimally distributed, so that the normal running of the electric tractor is ensured.

A control system 10 for controlling a powertrain system 120 of a vehicle 100 with first and second electric traction motors 122, 124. The control system is configured to receive inputs including a veh

A component (e.g. a bearing 30, gear, clutch, brake, sensor) mounted on a shaft 28 with a retaining ring 32 expandable in a radial direction (e.g. a circlip) to restrict axial movement of the componen

The invention relates to a method for operating a drive system (1) for a motor vehicle, wherein the drive system (1) comprises a traction battery (2), an electric traction machine (5, 8) electrically connected to the traction battery (2), an internal combustion engine (11) and a generator (12) that can be driven by the internal combustion engine (11) and is electrically connected to the traction battery (2), wherein the drive system (1) comprises a first temperature control circuit (15) for temperature control of the traction battery (2) and a second temperature control circuit (16) for temperature control of the internal combustion engine (11).The invention further provides that the drive system (1) also has a third temperature control circuit for temperature control of the electric traction motor (5), and that the second temperature control circuit (16) is fluidically connected to the first temperature control circuit (15) via a first valve arrangement (18) and to the third temperature control circuit (17) via a second valve arrangement (17). The invention further relates to a drive system (1) for a motor vehicle and a computer program product.

The utility model discloses automatic silkworm cocoon cooking equipment which comprises a machine frame, an auxiliary digester and a main digester which are installed on the left side and the right side of the interior of the machine frame respectively, and a T-shaped heat insulation plate installed in the portion, between the auxiliary digester and the main digester, of the interior of the machine frame. A gear type electric traction assembly is installed on the outer wall of the side, away from the rack, of the back plate, and an overturning structure is installed at the moving end of the gear type electric traction assembly. According to the utility model, the gear type electric traction assembly and the turnover structure are utilized, the silkworm cocoons and the perforated cooking cylinder can be quickly and automatically transferred among different cooking stages, the waiting time is greatly shortened, the time waste caused by the change of waiting water temperature in the traditional process is avoided, and the overall production efficiency is improved.

The invention discloses a low-voltage servo electric traction device of an AGV steering wheel, and relates to the technical field of AGV steering wheel traction devices. The device comprises a gear balancing traction assembly, a low-pressure servo driving assembly, a vibration reduction mechanism and a steering mechanism, the gear balancing traction assembly comprises a hub mounting cylinder and a balancing unit, the low-pressure servo driving assembly comprises a double-node universal joint connecting rod and a low-pressure servo motor, and the vibration reduction mechanism comprises a vertical vibration reduction box, a vibration damper and a tire inclination coordination box. The steering mechanism comprises a steering assembly and a supporting frame assembly. According to the single-wheel horizontal steering wheel, the hub mounting cylinder moves up and down through the vertical vibration reduction box to reduce vibration, then the inclination degree of the tire is coordinated through the tire inclination coordination box to adapt to the uneven ground, and the problems that the tire slightly inclines under vibration during walking of an existing single-wheel horizontal steering wheel, and the effect that the tire is attached to the ground is poor when the road surface is uneven are solved.

Aspects of the present disclosure relate to a control system (10) for controlling a powertrain system (120) of a vehicle (100), the powertrain system (120) having first and second electric traction motors (122, 124). The control system (10) is configured to: receive an input including a vehicle speed signal and a torque demand signal indicative of a powertrain torque demand; determining whether an operating condition is satisfied, and if the operating condition is satisfied, outputting a motor control signal to the powertrain system to provide a combined torque near the powertrain torque demand; and modulating the motor control signal such that one of the electric traction motors provides a reverse torque acting in a direction opposite the powertrain torque demand.

A method (30) for managing temperature states of at least one battery comprised in a vehicle having at least one electric traction motor, said method (30) comprising : determining (C_TBattoPt), based on a driving mode (OTD) used by a driver of said vehicle, an optimal temperature range (OZ ) of said at least one battery; - verifying (QIC) whether a current temperature of the at least one battery ( TBattAct) is comprised in said optimal temperature range (OZ ); - defining (OIC), based on said driving mode (OTD) and on an outcome of said operation of verifying, a displaying mode of an indicator ( TInd) related to a current temperature state of the at least one battery; and - displaying said indicator ( TInd), preferably via a display device comprised in the vehicle, through said displaying mode.