Abstract: Disclosed are a Mamba model-based lithium battery lifetime prediction method and system in the technical field of energy storage in renewable energy power systems, the method including: acquiring aging feature matrices of a plurality of lithium batteries and inputting the same into a Mamba model for training, extracting a hidden state matrix sequence of each of the lithium batteries based on the trained Mamba model, and obtaining a cycle count sequence corresponding to a target cycle life prediction point of each of the lithium batteries through norm calculation and variational mode decomposition; constructing a linear relationship model for lithium battery lifetime prediction based on cycle count sequences corresponding to target states of health of all of the lithium batteries and cycle count sequences corresponding to target cycle life prediction points of all of the lithium batteries.

Abstract: Disclosed are a method, device, medium, and product for extracting feature maps from operational data of lithium batteries. The method includes: acquiring operational data of a lithium battery; selecting target operational data from the operational data to obtain a plurality of target data groups; sorting a plurality of operational data in each of the target data groups to obtain an initial matrix; performing mean-variance normalization processing on each column of the initial matrix to obtain a normalized matrix; calculating a covariance matrix of the normalized matrix; performing singular value decomposition on the covariance matrix to obtain an eigenvector matrix; calculating a dimensionality reduction matrix corresponding to each of the target data groups according to the eigenvector matrix; scaling the dimensionality reduction matrix to construct a three-dimensional feature map matrix; and converting the three-dimensional feature map matrix into an image to obtain a feature image of the lithium battery.

Abstract: The present disclosure discloses a parameter extraction method for an energy storage management system based on natural language interaction, and belongs to the technical field of energy storage for new energy power systems, comprising: dividing parameter types, collecting natural language interaction corpora, labeling parameters, constructing a word segmentation set, coding natural language interaction corpora, calculating prior probabilities and conditional probabilities, persisting the prior probabilities and the conditional probabilities, inputting new corpora, loading the prior probabilities and the conditional probabilities, calculating posterior probabilities according to a naive Bayes formula, and extracting parameters corresponding to a maximum value of the posterior probabilities. According to the present disclosure, parameters are extracted using a natural language interaction manner, which reduces a threshold of use of conventional energy storage management systems.

Abstract: Disclosed are an internal resistance consistency evaluation method and system for a dynamically reconfigurable battery module in the technical field of energy storage in power systems, where the method includes: calculating a current change rate by introducing a nominal capacity of battery cells; selecting a previous sampling time point of a sampling time point at which the current change rate is greater than or equal to a target current change rate as a target sampling time point; when the number of the target sampling time points is greater than a preset value, calculating an internal resistance of each of the battery cells at the target sampling time points according to the target sampling time points, and constructing an internal resistance matrix; utilizing the internal resistance matrix and applying an improved internal resistance consistency evaluation algorithm to calculate and obtain an internal resistance consistency result of the dynamically reconfigurable battery module.

Abstract: Disclosed is a battery aging assessment method based on multi-source and multi-scale high-dimensional state space modeling in the field of energy storage in renewable power systems. The method includes: acquiring a time series of each discharge process within a preset number of discharge cycles of a sample battery; determining a first state transition path and a second state transition path based on discharge parameters corresponding to the time series; establishing a benchmark working-state transition path; calculating multiple sample distances between the second state transition path and the benchmark working-state transition path; training a battery aging assessment model using the sample distances as input and corresponding target state-of-health values as output; calculating a target distance between a state transition path of a to-be-predicted target battery and the benchmark working-state transition path.

Abstract: The present invention discloses a bionic regulation method for a number of bounces of a droplet on a metal surface based on acoustic in-situ monitoring, which comprises the following steps: obtaining dynamic contact characteristics and acoustic properties of a solid-liquid interface of metal superhydrophobic surfaces with different surface information in the droplet bounce process based on an optical-acoustic synchronous in-situ testing system for droplet bounces; and obtaining a correlation among the metal superhydrophobic surface, the acoustic response and the droplet bounce behavior based on the dynamic contact characteristics and the acoustic properties of the solid-liquid interface, and machining and modifying a micro-nano structure of the metal surface by combining a coupled bionic concept according to the correlation. A scientific basis and a novel design method are provided for the bionic regulation of the number of droplet bounces over the metal surface.

Abstract: The present invention discloses a dual cooperative induction temperature control device and a control method for a micro-nano impact indentation tester. The device comprises a first cavity and a second cavity which are respectively arranged in a pressing rod and an stage, wherein a phase change heat storage material is arranged in the two cavities, and a phase change temperature of the phase change heat storage material is a target temperature of a specimen for testing; a first electromagnetic induction heater and a second electromagnetic induction heater which respectively perform non-contact heating on the pressing rod and the stage; and temperature detection mechanisms configured to detect the temperature of the specimen and the indenter. The temperature control device of the present invention combines electromagnetic induction heating and phase change heat storage, thus has the advantages of no interference to the testing of a precise instrument and good temperature stability.

Abstract: The present invention provides a micro-nano impact indentation testing device and method based on cyclic refrigeration, and relates to the technical field of material property testing. The testing device comprises a pressure rod and a stage for low-temperature micro-nano impact indentation testing, and a refrigeration device for refrigerating and cooling the pressure rod and the stage, wherein the refrigeration device refrigerates the pressure rod and the stage by adopting an embedded channel, a cold conduction wire connected to the pressure rod and the stage and a refrigeration balancer in contact with the cold conduction wire are arranged between the pressure rod and the stage, and the temperature of the pressure rod and the temperature of the stage are stabilized at a common temperature point by the cold conduction wire and the refrigeration balancer together.

Abstract: The present invention provides a dynamic acoustic emission in-situ testing device and method for an electromagnetic rail launcher. The device comprises an armature, a guide rail and a support base, wherein the support base comprises an upper support base and a lower support base which are opposite to each other and are vertically arranged, a distance between the upper support base and the lower support base can be adjusted through bolts, the guide rail is vertically arranged between the upper support base and the lower support base, the armature is clamped in the guide rail, a plurality of groups of static acoustic emission sensors are arranged along the guide rail, a dynamic acoustic emission sensor is arranged on the armature. The method can comprehensively reveal the current-carrying friction damage mechanism of the armature-rail interface under the variable magnetic field intensity condition.

Abstract: The present invention discloses a rapid dot matrix micro-nano impact indentation testing system. The rapid dot matrix micro-nano impact indentation testing system comprises a three-dimensional electric positioning module, wherein the three-dimensional electric positioning module comprises an XY translation stage and a Z-axis lifting stage; a dot matrix impact indentation module, wherein the dot matrix impact indentation module comprises a three-degree-of-freedom piezoelectric platform arranged on the Z-axis lifting stage, one surface of the three-degree-of-freedom piezoelectric platform is provided with a piezoelectric ceramic actuator, and one end of the piezoelectric ceramic actuator is connected to an indenter; a clamp, wherein the clamp clamps a test piece, and the test piece faces the indenter; and an imaging module, wherein the imaging module comprises a microscope lens.

Abstract: The present invention discloses a pin-on-disk type in-situ current-carrying friction testing system, and belongs to the technical field of friction performance testing. The friction testing system includes a pin-on-disk type friction pair, a current loading mechanism, and a magnetic field generating mechanism. The current loading mechanism includes a conductive terminal abutting against an annular sidewall of a disk specimen and used to guide a current in the disk specimen to flow along a horizontal direction, and the magnetic field generating mechanism is used to generate a magnetic field. When a pin specimen and a disk specimen rotate relatively, the pin specimen, the conductive terminal, and the magnetic field generating mechanism are relatively stationary, and an Ampere force generated by the current in the disk specimen flowing in the horizontal direction under the action of the magnetic field faces a support platform.

Abstract: The present disclosure provides a compound eye-based in-situ monitoring unit, a micro-adjustment unit, and a multi-spectral imaging system thereof. The compound eye-based in-situ monitoring unit includes a spherical installation cover and an imaging assembly disposed on the spherical installation cover, where the spherical installation cover is provided with a spherical grid array, the spherical grid array includes 20 installation points (five rows and four columns), one imaging assembly is installed on each installation point, the imaging assemblies include a charge coupled device (CCD) optical digital camera assembly, a digital image correlation (DIC) light source assembly, an infrared (IR) spectrum assembly, a Raman spectrum assembly, and a terahertz light source assembly.

Abstract: The application relates to a method and apparatus for opening a video screen in a voice chat room, and an electronic device and a storage medium. The method is applied to a live streamer client and includes: sending a request for opening the voice chat room to a server so that the server creates the voice chat room, generates data of the voice chat room, and opens the voice chat room; and pushing, based on the data of the voice chat room, a video stream and an audio stream to a content delivery network server in response to the parameter value representing an open state of the video screen, so that an audience client pulls, based on the data of the voice chat room, the video stream and the audio stream from the content delivery network server for outputting in response to the parameter value representing the open state.

Abstract: A connection terminal is provided and includes a body, a welding pin, a first stop, a second stop, and a third stop. The body includes a pair of planar surfaces and a pair of side surfaces. The welding pin extends from an end of the body. The first stop extends outwardly from one of the pair of side surfaces, while the second stop extends outwardly from another of the pair of side surfaces. The third stop protrudes outwardly from one of pair of planar surfaces.

Abstract: Embodiments of the present disclosure provide an anisotropic conductive film and a forming method thereof, an ACF roll, a bonding structure and a display device. The anisotropic conductive film (ACF) includes: an insulating adhesive layer, including a plurality of preset regions corresponding to electrodes to be bonded and spaced from each other; and capsule structures, dispersed in the insulating adhesive layer of the plurality of preset regions and configured to realize a electrical connection in a direction perpendicular to a surface of the ACF when the ACF is subjected to a pressure in the direction perpendicular to the surface of the ACF, wherein a number of the capsule structures in each of the plurality of preset regions is greater than a preset number.