Abstract: A method and system for evaluating power battery aging state and screening retirement, wherein the method includes: performing first-level screening according to appearance and voltage data of a power battery; obtaining charging test data in a set time of the power battery subjected to the first-level screening, performing derivation and secondary derivation based on a capacity-voltage curve of the battery, respectively extracting a first index and a second index of a set peak of the derivated curve, and respectively using the first index and the second index to determine a battery category and consistency, thereby realizing second-level screening; and performing third-level screening on the battery subjected to the second-level screening based on a direct current internal resistance of the battery. By using the method and system, the detection time can be effectively reduced, the screening test cost can be reduced and the evaluation and screening precision can be improved.

Abstract: A multi-dimensional integrated monitoring system and method for underground engineering. The system includes point monitoring modules mounted on a plurality of first monitoring sections, linear monitoring modules mounted on a plurality of second monitoring sections, a planar monitoring module mounted on a tunnel face, and volumetric monitoring modules mounted on a plurality of third monitoring sections of the underground engineering; and a data analysis platform for receiving and analyzing first feature information collected by the point monitoring modules, second feature information collected by the linear monitoring modules, third feature information collected by the planar monitoring module, and fourth feature information collected by the volumetric monitoring modules. By means of the system, the problems that a unified system with mutual coupling of monitoring methods is not formed in the underground engineering, and the overall condition of the engineering cannot be fully reflected are solved.

Abstract: The method includes: grouping multiple cloud service components in a cloud platform into communities based on call relationships, with intra-community call closeness no more less than a preset value and inter-community closeness less than the value; if at least one target component in a first community has performance below a preset level (meeting the first preset condition), creating a second community identical to the first to share part of its load.

Abstract: Multifunctional hydrogels and methods of use thereof are provided.

Abstract: The present invention provides a topology, method and system for bi-directional power conversion of excitation power supply for power battery testing, wherein the topology comprises a three-phase PWM (pulse width modulation) converter, a high-frequency isolation three-level LLC (logical link control) resonant converter and a DC-DC (direct current) converter forming a topology structure for a three-stage power conversion; an input end of the three-phase PWM converter is connected to a power grid side; the high-frequency isolation three-level LLC resonant converter is connected between the three-phase PWM converter and the DC-DC converter in series and is configured for realizing bi-directional DC voltage conversion and isolation, and to raise a busbar voltage between the high-frequency isolation three-level LLC resonant converter and the DC-DC converter; and, the DC-DC converter is configured to generate charging and discharging excitation currents for a power battery testing.

Abstract: The present invention discloses a method for diagnosing micro-short circuit fault of a battery, comprising: acquiring real-time voltage data of each battery in battery module of electric vehicle, obtaining voltage matrix after noise elimination; calculating dynamic reference voltage sequence of the each battery in the voltage matrix within sliding window length, extracting eigenvalues of the each battery at different times; calculating correlation coefficients between voltages of the each battery at different times and reference voltage within the sliding window; forming feature point matrix of the battery module based on the eigenvalues and the correlation coefficients; calculating dynamic reference feature point sequence based on the feature point matrix, and calculating improved Frechet distances between feature point sequences of the each battery and the dynamic reference feature point sequence, using Frechet distance values as anomaly scores of the each battery; thus, judging whether a short-circuit faul

Abstract: Provided is a system and method for the distributed networked test of electric vehicles based on a cloud platform, comprising a cloud computing platform and a plurality of remote test benches, wherein the remote test benches, being provided at least two, to form a remote distributed networked structure and transmit test data to the cloud computing platform; the cloud computing platform, being in real-time bidirectional data communication with the remote test bench and configured to receive each test data in real-time, perform a data cleaning, a data classing washing, a data fusion and a data mining, extract useful data information from the test data, build corresponding a data model and a mechanism model on the cloud computing platform according to historical data and a mechanism of control object, control for different test benches, and complete a fault diagnosis and an early warning.

Abstract: Compositions and methods for neuroablation and the treatment diseases or disorders associated with neuronal dysfunction are provided.

Abstract: Three-dimensional printed antibiotic scaffolds are provided as well as methods of use thereof and methods of making.

Abstract: Compositions and methods for delivering therapeutics to a subject are provided.

Abstract: The present invention discloses a method for managing vehicle-mounted power battery based on stochastic theory, comprising: current source applies current excitation signal to power battery mounted on vehicle by control of BMS, and obtaining voltage measurement signal of the power battery; reconstructing voltage response signal that can effectively restore true voltage of the power battery by processing input and output signals of power battery; obtaining battery model parameters based on reconstructed voltage response signal and current excitation signal; estimating physical parameter values of internal state of power battery based on extended Kalman filter, unscented Kalman filter and like; charging the power battery timely, checking and maintaining the power battery, or replacing the power battery by comparing estimated physical parameter values of internal states with corresponding threshold values.

Abstract: An ultrasound scanning control method applied to an ultrasound scanning device is provided. The ultrasound scanning device includes an execution mechanism. The execution mechanism includes a mechanical arm and a probe. The ultrasound scanning control method includes controlling the mechanical arm to drive the probe to move according to a set scanning trajectory for performing an ultrasound scanning detection on a part to be examined. Once an actual pressure value between the probe and the part to be examined in each control cycle is sensed using the force sensor, a pressure value between the probe and the part to be examined is controlled to be a constant value based on the actual pressure value.

Abstract: A power compensation control method and apparatus for a high-power multi-functional efficient charging system. A topology structure of the charging system includes at least two parallel high frequency link matrix converters. The power compensation control method includes: calculating a difference between an input voltage phase of an ith converter and an ideal reference input current phase under a dq two-phase synchronous rotating coordinate system, where i is an odd number; calculating, according to the above difference, a required rotating phase angle of a space current vector of an (i+1)th converter, where by total instantaneous reactive power at input sides of the ith converter and the (i+1)th converter is zero; correspondingly rotating the vector, and judging a sector to which the rotated vector belongs; and generating a corresponding control pulse signal based on the corresponding sector and modulation ratio, so as to act on the (i+1)th converter to realize power compensation.

Abstract: A method and system for evaluating power battery aging state and screening retirement, wherein the method includes: performing first-level screening according to appearance and voltage data of a power battery; obtaining charging test data in a set time of the power battery subjected to the first-level screening, performing derivation and secondary derivation based on a capacity-voltage curve of the battery, respectively extracting a first index and a second index of a set peak of the derivated curve, and respectively using the first index and the second index to determine a battery category and consistency, thereby realizing second-level screening; and performing third-level screening on the battery subjected to the second-level screening based on a direct current internal resistance of the battery. By using the method and system, the detection time can be effectively reduced, the screening test cost can be reduced and the evaluation and screening precision can be improved.

Abstract: Provided are a crucible combination and a thermal field assembly. The crucible combination includes a susceptor holder; a susceptor body disposed on the susceptor holder, the susceptor body comprises a crucible installation cavity that gradually increases from the susceptor holder in a direction departing from the susceptor holder; and a crucible disposed in the crucible installation cavity, an outer surface of the crucible is an outer surface that gradually increases from the susceptor holder in the direction departing from the susceptor holder, the outer surface and an inner surface of the crucible installation cavity are arranged oppositely, and a softening temperature of the susceptor body is greater than the softening temperature of the crucible.

Abstract: A multi-fault diagnosis method has the following steps: measuring cell voltages of a battery pack to be diagnosed; constructing a cell voltage sequence according to measured cell voltages of the battery pack to be diagnosed, and calculating a sample entropy value of the cell voltage sequence; setting a correction coefficient for representing voltage fluctuation information, and correcting the sample entropy value through the correction coefficient to obtain a corrected sample entropy value; and judging and outputting a fault type of the battery pack to be diagnosed according to a numerical value change of the corrected sample entropy value. Faults of cells can be accurately diagnosed without a model, sample entropy values under different faults can be distinguished by setting the correction coefficient, the intuitiveness and efficiency of fault detection are improved, and the fault type and time of the lithium-ion cells can be quickly, accurately and stably diagnosed and predicted.

Abstract: An ultrasound scanning control method applied to an ultrasound scanning device is provided. The ultrasound scanning device includes an execution mechanism. The execution mechanism includes a mechanical arm and a probe. The ultrasound scanning control method includes controlling the mechanical arm to drive the probe to move according to a set scanning trajectory for performing an ultrasound scanning detection on a part to be examined. Once an actual pressure value between the probe and the part to be examined in each control cycle is sensed using the force sensor, a pressure value between the probe and the part to be examined is controlled to be a constant value based on the actual pressure value.

Abstract: A solderless battery pack is provided that includes a battery port, a protective plate, an upper end plate, a lower end plate, cell groups and a cell locking mechanism. The cell groups are arranged between the upper end plate and the lower end plate and include a cell installation bracket, cells and a PCB busbar. The cell locking mechanism includes a metal upper pressing plate, a metal lower pressing plate and a fastening long bolt that passes through the metal upper pressing plate, the metal lower pressing plate, the upper end plate, the lower end plate and the cell groups.

Abstract: An ultrasound scanning control method applied to an ultrasound scanning device is provided. The ultrasound scanning device includes an execution mechanism. The execution mechanism includes a mechanical arm and a probe. The ultrasound scanning control method includes: controlling the mechanical arm to drive the probe to move according to a set scanning trajectory; and controlling the probe to collect an ultrasound image. A target region is identified from the collected ultrasound image. The scanning trajectory is adjusted when a position of the target region in the ultrasound image is not a predetermined position, and the mechanical arm is controlled to drive the probe to move according to the adjusted scanning trajectory.

Abstract: Provided is a system and method for the distributed networked test of electric vehicles based on a cloud platform, comprising a cloud computing platform and a plurality of remote test benches, wherein the remote test benches, being provided at least two, to form a remote distributed networked structure and transmit test data to the cloud computing platform; the cloud computing platform, being in real-time bidirectional data communication with the remote test bench and configured to receive each test data in real-time, perform a data cleaning, a data classing washing, a data fusion and a data mining, extract useful data information from the test data, build corresponding a data model and a mechanism model on the cloud computing platform according to historical data and a mechanism of control object, control for different test benches, and complete a fault diagnosis and an early warning.