Abstract: The present disclosure provides a train turn-back control method, device and system. The method includes: determining first state information of a train when confirming that a turn-back instruction is received; directly resetting the first state information to obtain second state information; and performing turn-back control on the train according to the second state information. The present disclosure can realize turn-back control on the train based on a single set of vehicle on-board-device, thereby improving the turn-back success rate and turn-back efficiency of the train, and reducing the hardware consumption.

Abstract: A vehicle body structure includes a forecabin crossbeam and two front longitudinal beams disposed at intervals along a left-right direction. The forecabin crossbeam and the two front longitudinal beams are integrally formed and are at least partially located at the bottom of the front longitudinal beam.

Abstract: The present disclosure discloses a train network node and a CANopen-based train network node monitoring method. The method includes: obtaining, by a train network node, an offline duration and a heartbeat packet transmission period based on a pre-configured network node list, where the offline duration is set on an offline timer corresponding to each node related to the network node, and the heartbeat packet transmission period is set on a heartbeat timer; and comparing the offline duration that is set on the offline timer corresponding to each node with the heartbeat packet transmission period that is set on the heartbeat timer, and determining an offline monitoring mechanism of each node based on a comparison result.

Abstract: A heat dissipation substrate includes: a metal-ceramic composite board, where the metal-ceramic composite board is a metal layer wrapping a ceramic body; and a metal oxide layer integrated with the metal layer and formed in an area of at least a part on an outer surface of the metal layer; and a soldering area on which the metal oxide layer is not formed and that is used to connect with a copper substrate and bear a chip.

Abstract: A vehicle body structure and a vehicle are provided. The vehicle body structure includes a front longitudinal beam, a front compartment crossbeam, and a dash panel. The front longitudinal beam includes a left front longitudinal beam and a right front longitudinal beam that are disposed at an interval in a transverse direction. The front compartment crossbeam is mounted on the left front longitudinal beam and the right front longitudinal beam, and is located in front of the dash panel. A projection area of the front compartment crossbeam on the dash panel in an X direction at least partially covers a projection of a preset area surrounding a pedal center point on the dash panel in the X direction.

Abstract: The disclosure relates to the field of lithium-ion batteries, and discloses a polymer composite membrane and a method for preparing same. The disclosure further includes a lithium-ion battery for which the foregoing polymer composite membrane is used. The polymer composite membrane includes a porous base membrane and a heat-resistant fiber layer covering at least one side surface of the porous base membrane, where materials of the heat-resistant fiber layer contain a first polymeric material and a second polymeric material.

Abstract: The present invention provides a start control system of a vehicle, including: an electronic control unit (ECU), a starter, an air conditioner, and a starting power supply. The starting power supply includes a starting battery and a battery management system (BMS). At a low-temperature environment, when receiving an ignition request signal sent by the ECU, the BMS detects the temperature of the starting battery. When the temperature is less than a preset threshold, the starting battery is connected to the air conditioner for a preset time, so that the starting battery effectively raises the temperature of the starting battery by means of discharging at a high current temporarily. The start control system of a vehicle improves an ignition capability of a vehicle in a low-temperature environment, extends a temperature range and an area of using the vehicle, and improves competitiveness of the vehicle. The present invention further provides a vehicle having the start control system of a vehicle.

Abstract: A charging connector support structure includes a fixing frame, a transmission mechanism, and a rotatable support arm assembly. The fixing frame is disposed on an inner side of a vehicle body ski. The rotatable support arm assembly and the transmission mechanism are disposed on the fixing frame. An input side of the transmission mechanism is connected to a charging cap covering a charging socket. An output side of the transmission mechanism is connected to the rotatable support arm assembly. The rotation of the charging cap is transmitted to the rotatable support arm assembly through the transmission mechanism to drive the rotatable support arm assembly to switch back and forth between an initial state and a support state. The rotatable support arm assembly can support the charging connector inserted into the charging socket when the rotatable support arm assembly is in the support state.

Abstract: A transmission, a power-driven system, and a vehicle are provided. The transmission includes a first planetary gear mechanism, a second planetary gear mechanism, an input shaft, an intermediate shaft, a first synchronizer, and a second synchronizer. A second planet carrier in the second planetary gear mechanism is connected to an output end of the transmission. The input shaft is connected to a first sun gear. A first ring gear is connected to the intermediate shaft. The intermediate shaft is connected to a second sun gear. The first synchronizer secures a first planet carrier to a housing of the transmission or connects the first planet carrier to the first sun gear. The second synchronizer secures a second ring gear to the housing of the transmission or connects the second ring gear to the first ring gear.

Abstract: A battery pack, a vehicle, and an energy storage device are provided. The battery pack includes a cell array and a support member, where the cell array includes a plurality of cells, the cell has a first dimension, and the first dimension is a maximum spacing between two imaginary parallel planes sandwiching the cell; and at least one of the cells 600 mm?first dimension?2500 mm the at least one cell includes a casing and a core located inside the casing, a supporting region is formed on the casing, and the cell is connected to the support member through the supporting region and is supported by the support member. The support member is connected to the supporting region to support the cell.

Abstract: The present application discloses a method and a device for vehicle security communication, a vehicle multimedia system, and a vehicle. The method applied to a security chip comprises: receiving a control instruction from a network system when the network system is connected, wherein the control instruction includes encrypted control data; decrypting the encrypted control data in the control instruction; obtaining the decrypted control data when the decryption is successful; and transmitting the decrypted control data to the vehicle body system to make the vehicle body system control the vehicle to perform a target operation according to the decrypted control data.

Abstract: The present disclosure provides an active noise reduction method, a system, and a new energy vehicle. The active noise reduction method includes: obtaining a frequency of a high-frequency noise signal in an acoustic environment, constructing and generating a harmonic masking signal according to the frequency of the high-frequency noise signal, where the harmonic masking signal includes a harmonic signal and a masking signal, and the harmonic signal is a subharmonic wave of the high-frequency noise signal, and inputting the harmonic masking signal into a sound playback apparatus for playback to output a noise reduction construction sound, and performing noise reduction on the acoustic environment.

Abstract: The disclosure discloses a photovoltaic cell assembly, a photovoltaic cell array, and a solar cell assembly.

Abstract: A dead axle of a rail vehicle includes: an axle body; a running wheel; a guiding frame; a horizontal wheel; and a connecting rod component, including a first transverse pull rod and a second transverse pull rod, where when the rail vehicle turns left, the horizontal wheel cooperates with a rail beam to drive the guiding frame to swing and drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the left, and when the rail vehicle turns right, the horizontal wheel cooperates with the rail beam to drive the guiding frame to swing and drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the right.

Abstract: A solar cell assembly and a solar cell module are provided. The solar cell assembly includes a solar panel; and an installation member having a supporting portion configured for fixing the solar panel and a connecting portion configured for fixing the installation member onto a support beam. The supporting portion is disposed on a backside of the solar panel, the connecting portion extends out of an edge of the supporting portion along a direction parallel to the solar panel, the connecting portion locates outside of a coverage area of the solar panel, and the connecting portion defines a installation hole therein.

Abstract: An electric mining dump truck includes a frame, an axle, an electric wheel assembly, a power battery assembly, an electric control system, a hydraulic system, a cooling system, a bed and a cab assembly. The cab assembly is disposed on a front end of the frame, and the bed is mounted on a rear end of the frame; the axle includes a front axle and a rear axle, the front axle and the rear axle is mounted on the front end and the rear end of the frame, respectively, the electric wheel assembly is mounted on the rear axle; and the power battery assembly includes a battery cabinet configured to supply electric energy for various electric components.

Abstract: A transaxle of a rail vehicle includes: a power assembly; an axle body; a running wheel; a guiding frame; a horizontal wheel; and a connecting rod component, including a first transverse pull rod and a second transverse pull rod, where when the rail vehicle turns left, the horizontal wheel cooperates with a rail beam to drive the guiding frame to swing and drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the left, and when the rail vehicle turns right, the horizontal wheel cooperates with the rail beam to drive the guiding frame to swing and drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the right.

Abstract: A relay includes: a housing, a base plate, and a driving device, connected to the base. At least one stationary contact group is provided on the housing. The stationary contact group includes two stationary contacts insulated from each other. At least one stationary contact in the stationary contact group includes an upper terminal and a lower contact are included. The upper terminal and the lower contact are isolated from each other and electrically connected by a fuse. The base plate is provided in the housing and can switch between on and off positions. The base plate, when being in the on position, contacts the stationary contact group for the electrical conduction of the two stationary contacts in the stationary contact group, and, when being in the off position, is isolated from the stationary contact group for disconnecting the electrical conduction of the two stationary contacts in the stationary contact group.

Abstract: A battery pack comprises a plurality of batteries. The protection device is disposed between two adjacent batteries and comprises: a first connecting assembly, a second connecting assembly and a conductive connecting assembly. The protection device has a normal state and an alarm state. When the protection device is in the normal state, the first connecting assembly and the second connecting assembly are spaced apart, and the overload protection circuit is open. When the protection device is in the alarm state, the first connecting assembly is electrically connected with the housing of the first battery, the second connecting assembly is electrically connected with the housing of the second battery, at least one of the first connecting assembly and the second connecting assembly moves to be electrically connected with each other, and the overload protection circuit is closed.