Abstract: This application provides a battery, an electric apparatus, and a method and a device for preparing battery, relating to the field of battery technologies. The battery includes a battery cell having an electrode terminal; a fire prevention pipeline, configured to accommodate a fire prevention medium; and a fastener, configured to fasten the fire prevention pipeline. The fastener is connected to the electrode terminal.

Abstract: An electrode assembly, a battery cell, a battery, and a method and device for manufacturing an electrode assembly are provided. In some embodiments, the electrode assembly includes a positive electrode plate and a negative electrode plate. The positive electrode plate and the negative electrode plate are wound or folded to form a bend region. The positive electrode plate includes a plurality of bend portions located in the bend region. Each bend portion includes a positive current collecting layer and a positive active material layer. The positive current collecting layer is coated with the positive active material layer on at least one surface in a thickness direction of the positive electrode plate. A barrier layer is disposed between the positive current collecting layer and the positive active material layer.

Abstract: A network access method and a terminal are provided. The network access method performed by the terminal includes receiving a reference signal transmitted by a network-side device. The reference signal includes a first reference signal, or includes a first reference signal and a second reference signal. The first reference signal is an Single-Frequency Network (SFN)-specific reference signal, or the second reference signal is a cell or Transmission Reception Point (cell/TRP)-specific reference signal. The network access method further includes performing an initial access-related operation based on the received reference signal.

Abstract: An optical system includes a cage and an optical transceiver. The optical transceiver is inserted into the cage in a pluggable manner, and includes a housing, a partition component provided on the housing, and a fastening component movably disposed on the housing. The fastening component is detachably fastened with the cage. The partition component is located between the fastening component and the cage to separate at least a part of the fastening component from the cage.

Abstract: An object detection method is provided. In the method, raw point cloud data including a to-be-detected object is obtained, where the raw point cloud data includes annotation information for the to-be-detected object; instance point cloud data corresponding to the to-be-detected object is extracted from the raw point cloud data by using the annotation information; an object position point is determined from the raw point cloud data, and the raw point cloud data and the instance point cloud data to obtain a fused to-be-detected sample is fused based on the object position point and the to-be-detected object is detected by using the raw point cloud data and the to-be-detected sample.

Abstract: This application provides a torque compensation method for a vehicle, a torque compensation apparatus of a vehicle, and an associated computer-readable storage medium. The torque compensation method includes: when a vehicle control module determines that the vehicle is in a sliding state during a brake idle stroke, obtaining, by the vehicle control module, a pressure of a brake master cylinder of the vehicle, and controlling a motor of the vehicle based on the pressure of the brake master cylinder to output a compensation torque. In this application, a range of the brake idle stroke of the vehicle can be precisely determined, so as to control the motor of the vehicle to output the compensation torque in a timely manner, thereby effectively suppressing sliding during the brake idle stroke of the vehicle and ensuring safe driving.

Abstract: Embodiments of this application provide a battery control circuitry, a battery control method, and an electric apparatus. The battery control circuitry may include a charging interface, a switch circuit, a first battery pack; a second battery pack, where a positive electrode of the second battery pack may be connected to a negative electrode of the first battery pack; and a control circuit, configured to: when detecting that the charging interface receives a charging signal from a low-voltage platform, control the switch circuit to switch to a first connection state, where in the first connection state, a target battery pack may be connected in series to the charging interface to form a first loop, so as to charge the target battery pack, where the target battery pack may be the first battery pack or the second battery pack.

Abstract: An electronic device is provided. The electronic device includes an antenna structure and a housing. The antenna structure includes a first radiating element, a grounding element, and a second radiating element. The first radiating element includes a first radiating portion and a grounding portion. Two ends of the grounding portion are respectively connected with the first radiating portion and the grounding element. The first radiating portion, the grounding portion and the grounding portion form a surrounding structure. The second radiating element includes a second radiating portion, a third radiating portion, a fourth radiating portion, and a feeding portion connected between the second radiating portion, the third radiating portion and the fourth radiating portion. The second radiating portion and the first radiating portion are separated from each other and couple to each other.

Abstract: A bioassay system includes at least one conductive excitation coil, the at least one conductive excitation coil configured to generate an alternating magnetic field including a first frequency and a second frequency. The bioassay system further includes a sample mount configured to position a sample within the at least one conductive excitation coil, and at least one sensing conductive coil configured to determine a magnetic response of a sample positioned within the sample mount to the alternating magnetic field.

Abstract: A calibration method for machine tools comprises: providing a workpiece on a machine tool; rotating the workpiece around a first rotation axis parallel to a main shaft of the machine tool and processing the workpiece by a first machining mode; measuring a first dimensional error of a shape of the workpiece along directions of first and second linear axes perpendicular to the first rotation axis; calculating a positional error of the first rotation axis according to the first dimensional error; rotating the workpiece around a second rotation axis perpendicular to the main shaft and processing the workpiece by a different second machining mode; measuring a second dimensional error of the shape of the workpiece along a direction of a third linear axis perpendicular to the second rotation axis; calculating a positional error of the second rotation axis according to the second dimensional error.

Abstract: This application relates to an electric vehicle, a thermal management system, and a method for controlling same. The thermal management system includes: a passenger compartment thermal management subsystem, including a compressor, a first throttle, and an evaporator configured to refrigerate the passenger compartment, where the compressor, the first throttle, and the evaporator are controlled to communicate with each other in sequence to form a first refrigerant circuit, the passenger compartment thermal management subsystem further includes a condenser, and the condenser is disposed between the compressor and the first throttle and able to exchange heat with the first refrigerant circuit; a heat emitting component thermal management subsystem, including a heat emitting component and a cooling water tank configured to cool the heat emitting component, and a control valve system, connected to the passenger compartment thermal management subsystem and the heat emitting component thermal management subsystem.

Abstract: The embodiments of this application relate to the technical field of battery, and in particular, to a thermal management system, a method and an equipment. In this thermal management system, a compressor and a condenser form a cooling loop with a thermal exchange pipeline of the battery, and a compressor and an evaporator form a heating loop with a thermal exchange pipeline, so that this thermal management system can provide both cooling and heating for battery, in comparison with the direct cooling system and heating film, this thermal management system features simple structure and high reliability. In addition, the locations of the condenser and the evaporator can be reasonably arranged as required to achieve the secondary utilization of hot air and cold air.

Abstract: A channel monitoring method and apparatus, and a user equipment are disclosed. The method includes: receiving, by the UE, first information sent by a network device, where the first information is used for indicating a monitoring behavior of the UE on a downlink control channel, and the first information includes at least one of the following: time information or frequency domain information; and monitoring or stopping monitoring, by the UE, a target downlink control channel according to the first information.

Abstract: A signal transmission method for random access includes: sending N transmissions of first message to a network device, where N is an integer greater than 1; and receiving, in a receiving window, response information transmitted by the network device, where the receiving window is started after the n-th transmission of first message among the N transmissions of first message, where n is an integer and 1?n?N.

Abstract: A thermal compensation system for machine tools includes a thermal compensation-monitoring device and a cloud processing device. The thermal compensation-monitoring device receives a plurality of temperature signals of a workpiece and corresponding processing tolerance data to build or update a thermal compensation database. The cloud processing device provides a thermal compensation model, and applies the model with the characterized temperature signals and the tolerance data to generate a compensation value so as to decide whether or not to modify the model or to run a compensation is necessary.

Abstract: A stimulator includes a support layer, a coil supported by the support layer, the coil extending around a central area, and a plurality of pillars supported by the support layer in the central area.

Abstract: A battery module, a device, and a failure handling method for a failed battery cell. The battery module includes: a battery cell arrangement structure, including a plurality of battery cells arranged along a length direction, where the battery cells include electrode terminals, and the battery cells include a failed battery cell; a box body, having an accommodation cavity in which the battery cell arrangement structure is located; a mounting beam, located in the accommodation cavity and at an end of the battery cell arrangement structure along the width direction; a pressing plate; and a conductive component, connected to a positive electrode terminal and a negative electrode terminal of the failed battery cell. The conductive component is easily connected to electrode terminals of a failed battery cell, so that a maintenance process can be simplified and maintenance costs can be reduced.

Abstract: A signal transmission method and a network device are provided. The method is applied to the network device and includes: performing LBT for a channel in an SSB transmission direction before a transmission of an SSB in an unlicensed band; and transmitting the SSB when the channel is detected as idle.

Abstract: The present disclosure relates to a method for evaluating and predicting a placenta-derived disease and a kit. Specifically, the invention of the present disclosure provides a method for detecting the methylation modification level of at least one DNA methylation modification difference locus or at least one DNA methylation haplotype in a given genomic position in a sample to be tested, a kit, and a corresponding detection system, which can be used for accurately screening, in vitro, whether a subject has a placenta-derived gestational disorder.

Abstract: The present application provides a method for controlling a power-down detection circuit, a controller and a computer readable storage medium. The method includes: receiving, by a controller of a power-down detection circuit, a power-down signal, wherein the power-down signal is sent from a power-down detection sub-circuit of the power-down detection circuit when it is determined by the power-down detection sub-circuit that an output voltage of a low-voltage side power supply of the power-down detection circuit is smaller than a threshold, and wherein the power-down detection sub-circuit and the controller are powered by the low-voltage side power supply; controlling, by the controller, a memory of the power-down detection circuit to record fault information, wherein the fault information comprises current information of a high voltage bus sensed by a high-voltage side current sensor of the power-down detection circuit; and performing, by the controller, a fault diagnosis based on the fault information.