Abstract: A lightning protection apparatus for a wind generator blade, including a lightning arrester and a lightning arrester base. The lightning arrester includes a connecting portion, a lightning arresting portion, and a positioning portion, wherein the lightning arresting portion is configured to arrest a lightning, an external thread is formed on a surface of the connecting portion and configured to be connected to the lightning arrester base, and the positioning portion is disposed between the connecting portion and the lightning arresting portion, such that after the connecting portion is screwed into a threaded hole, the positioning portion can fit with a recess in the threaded hole in shape. The lightning arrester base is configured to be connected to the lightning arrester and lead out a lightning current received by the lightning arrester during lightning arresting, and includes an insulation layer and at least one the threaded hole.

Abstract: The present disclosure relates to a modular thermoplastic web structure for wind power generation, a manufacturing method therefor, and a wind turbine blade. The modular thermoplastic web structure includes: two continuous thermosetting web flanges fixedly connectable to a wind turbine blade housing; and a thermoplastic modular interlayer, disposed between the two continuous thermosetting web flanges and having two opposite ends fixedly and respectively connected to the two continuous thermosetting web flanges.

Abstract: A battery cell, a battery, and an electric device. The battery cell comprises: a casing, the casing comprising a first wall portion; a pressure relief mechanism, the pressure relief mechanism arranged on the first wall portion; and an electrode assembly, accommodated in the casing, the electrode assembly comprising at least one negative electrode sheet, the first wall portion facing the edge of the negative electrode sheet, an active material layer formed on at least one side of the negative electrode sheet, the active material layer comprising a first region and a second region which are arranged in a first direction, the second region closer to the first wall portion than the first region, the first direction being parallel to the thickness direction of the first wall portion, and in a full-charge state is less than the thickness of the second region at least by 5 ?m.

Abstract: A battery cell, a battery, and an electrical apparatus. The battery cell comprises: an electrode assembly; and a casing, the casing being used for accommodating the electrode assembly. The casing is provided with a scoring groove and a buffer groove, the scoring groove defining a predetermined pressure relief area which is opened when the battery cell is subjected to pressure relief, and the buffer groove being located on the side of the scoring groove away from the geometric center of the predetermined pressure relief area.

Abstract: A battery cell, a battery, and an electric device. The battery cell includes a case. A pressure relief mechanism is provided on a first wall portion. An electrode assembly is accommodated in the case and includes at least one negative electrode sheet with an active material layer on at least one side. In a second direction, the first wall portion faces an edge of the negative electrode sheet, and the minimum distance D between the pressure relief mechanism and the edge of the active material layer is 3 mm to 15 mm. Based on the total mass of the active material layer, the proportion S of active material is 0.5% to 25%. In a first direction, the minimum distance d between an edge of the pressure relief mechanism and an outer surface of the second or third wall portion is 3 mm to 20 mm.

Abstract: The present invention discloses an instability fault monitoring method with self-learning strong generalization capability and an instability fault monitoring apparatus. First, electrical volume acquisition nodes are identified and data composition features are collected to form samples, the samples including a small number of labeled data samples and a large number of unlabeled data samples. Then, the samples are input into a reinforcement learning network of actor-critic architecture, and self-learning can be realized by means of the network to form different diagnostic models, where actor selects a suitable network layer from action space (alternative models) to construct a deep belief neural network and formulate a corresponding strategy, critic is configured to evaluate the strategy currently formulated by actor, and the reinforcement learning network outputs the corresponding actor-critic architecture and diagnostic model.

Abstract: The present disclosure relates to a method for preparing an unbleached biomechanical pulp from straws and full utilization of by-products, which belongs to the technical field of papermaking technology and waste comprehensive utilization. In the present disclosure, straw as raw material for pulping is treated with steam, then a small amount of KOH is added, the straw is softened by hydrothermal saturation, then the temperature of the straw is adjusted, alkaline compound enzymes are added for biological treatment, and finally the straw is refined, where the prepared mechanical pulp can meet the requirements of producing unbleached packaging paper and paper-based materials. At the same time, the by-products are recycled to prepare biomass compound fertilizer, which turns solid waste into treasure and realizes the high-value full utilization of wheat straw. Therefore, it has good practical application value and broad application prospects.

Abstract: The disclosure relates to a method for preparing unbleached biomechanical pulp by hot steam and biological enzyme treatment and full utilization of by-products thereof, and belongs to the technical field of papermaking technology and comprehensive utilization of waste. The present disclosure proposes a method for preparing high-strength unbleached biomechanical pulp, using whole wheat straw as a raw material, by using hot water in coordination with an alkaline biological enzyme to treat whole wheat straw, thereby meeting the requirements for the production of unbleached linerboard and paper-based materials, and recycling by-products thereof to prepare biomass compound fertilizers, which creates wealth from solid waste and realizes the high-value full utilization of wheat straw. The preparation method of the disclosure is simple, green, clean and efficient, and has good practical application value and broad application prospects.

Abstract: The present application provides a method and apparatus for optimizing an energy storage system, a device, a storage medium and a program product. The method for optimizing the energy storage system includes: acquiring configuration information of each of battery cells in a target station corresponding to a detection instruction in response to the detection instruction; computing actual state information of each of the battery cells according to the configuration information; determining a to-be-optimized state of a group to which each of the battery cells belongs according to the actual state information of each of the battery cells; in response to an optimization instruction, determining a target optimization group from groups and optimizing the battery cell in the target optimization group.

Abstract: The present application provides a battery SOC evaluation method, an apparatus, a device and a medium. The method includes: acquiring charging-discharging data of a first battery cell pack at different first temperatures and different first rates, where the number of the first battery cell pack is at least one, and the first battery cell pack includes a first battery cell; acquiring first SOCs of the first battery cell pack according to the charging-discharging data, where the charging-discharging data includes first voltages of the first battery cell pack; establishing an association table of the first SOCs with the first temperatures, the first rates and the first voltages; acquiring a second temperature, a second rate and a second voltage of a battery pack, and acquiring a second SOC of each second battery cell in the battery pack by the association table, where the battery pack includes multiple second battery cells.

Abstract: The invention relates to an integrated sensing and communication system based on a mobile communication signal, belonging to the field of wireless communication.

Abstract: The disclosure relates to a method of cutting plies of a composite laminate, a composite laminate thereof, a wind turbine blade with such composite laminate, and a cutting apparatus thereof. The cutting apparatus includes cutting elements for performing a plurality of first and second local cuts in the terminated edge area of the ply. The first and second cuts define a plurality of cutaways. The cutting apparatus further includes means for removing the cut-off pieces from the terminated edge area. The shortened fibres and the uncut fibres are optionally mixed along the terminated edge area to form a chamfering of the terminated edge. Alternatively, the fibres are shortened along different first cutting lines wherein a percentage of the fibres at each first cut are shortened to form shortened fibres with different lengths.

Abstract: The present disclosure provides a defect-detectable fiber fabric, including a plurality of bunches of fibers and a plurality of braided threads configured to respectively fix together fibers of each bunch of fibers. The plurality of braided threads include first braided threads each having a color different from a color of any of the plurality of bunches of fibers, and a respective distance between every two adjacent first braided threads is configured to make wrinkle defects that could be formed in fabric layers detectable. After the curing and molding, the positions of the defects and the layer(s) where the defects are formed can be determined according to the states of the first braided threads.

Abstract: Disclosed is a fault diagnosis method for a four-switch Buck-Boost converter, including the following steps: obtaining circuit parameters when different faults occur, labeling fault parameters with fault types, and combining the fault parameters and labels into a data set; constructing a simplified self-organizing neural network consisting of a plurality of nonlinear operation modules, a weighting module, and an analysis module; performing training by using the data set to obtain a self-organizing neural network for determining the faults of the converter; and inputting the circuit parameters of the four-switch Buck-Boost converter to the self-organizing neural network, so as to determine the fault types of the four-switch Buck-Boost converter. Further disclosed is a fault diagnosis apparatus for a four-switch Buck-Boost converter.

Abstract: A COF@hydromagnesite composite material and its preparation method and application are disclosed. The preparation method of the composite material includes the following steps. Firstly, diisocyanate organic matters are used as a modifier to carry out chemical reaction with the hydromagnesite powder to obtain modified hydromagnesite powder particles. Secondly, tris(4-aminophenyl)amine and 2,5-dihydroxyterephthalaldehyde are adopted as reaction monomers for reacting to obtain the Covalent Organic Framework (COF) material. And finally, taking modified hydromagnesite powder particle as a core and COF as a shell, the COF@hydromagnesite composite material is prepared. The COF@hydromagnesite composite material synthesized by the method disclosed by the disclosure is simple in preparation process, high in stability and good in selectivity, which can be used for adsorption treatment of lead ions in water.

Abstract: A COF@hydromagnesite composite material and its preparation method and application are disclosed. The preparation method of the composite material includes the following steps. Firstly, diisocyanate organic matters are used as a modifier to carry out chemical reaction with the hydromagnesite powder to obtain modified hydromagnesite powder particles. Secondly, tris(4-aminophenyl)amine and 2,5-dihydroxyterephthalaldehyde are adopted as reaction monomers for reacting to obtain the Covalent Organic Framework (COF) material. And finally, taking modified hydromagnesite powder particle as a core and COF as a shell, the COF@hydromagnesite composite material is prepared. The COF@hydromagnesite composite material synthesized by the method disclosed by the disclosure is simple in preparation process, high in stability and good in selectivity, which can be used for adsorption treatment of lead ions in water.

Abstract: Provided is method of extracting and separating gallium by emulsion liquid membrane. The method of extracting and separating gallium by emulsion liquid membrane includes preparation of the emulsion liquid membrane, extraction and deextraction. By establishing a proper emulsion liquid membrane system, gallium is selectively extracted from the gallium leaching solution. In the scheme of the present disclosure, chosen factors are optimized through fractional fractorial design and central composite design so as to obtain an optimal processing scheme. The influences of gallium solution/emulsion volume ratio, extractant concentration, H2SO4 concentration, emulsion stirring duration and emulsion stirring speed on the gallium extraction rate are studied, and efficient enrichment of gallium is achieved.