Abstract: A mulching paper for a greenhouse, and a preparation method for the mulching paper includes the following steps: subjecting wheat straw biomechanical pulp to beating treatment with a beating degree of 35° SR-40° SR to obtain a pulp slurry; thoroughly mixing the pulp slurry with a papermaking additive, and then performing papermaking to obtain a mulching base paper; uniformly coating one side or both sides of the mulching base paper with gelatinized cationic starch (CAS) or gelatinized soybean oil-modified starch, and drying; and then uniformly coating the one side or both sides with a polyurethane or acrylic resin coating, and drying to obtain the mulching paper. The mulching paper uses the biomechanical pulp as the main raw material. Through methods of addition into the pulp and surface coating, high physical and mechanical properties and high hydrophobicity and moisture resistance of the mulching paper are achieved.

Abstract: The battery cell includes a case, a pressure relief mechanism, and an electrode assembly. The case has a first wall and a second wall that are adjacent and connected to each other. The pressure relief mechanism is provided on the first wall. The electrode assembly has a first portion and a second portion sequentially arranged along a first direction, the first portion and the second portion each include multiple anode electrode sheet layers and multiple cathode electrode sheet layers, the multiple anode electrode sheet layers and the multiple cathode electrode sheet layers are alternately stacked one-to-one along the first direction, the second portion is disposed between the first portion and the second wall, a distance from the cathode electrode sheet layer of the second portion to the first wall is greater than a distance from the cathode electrode sheet layer of the first portion to the first wall.

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: A battery cell, a battery, and an electrical device are provided. The battery cell comprises: a case with an opening; an electrode assembly accommodated within the case; and an end cover closing the opening, wherein the end cover is in sealed connection with the case through a first connection area and a second connection area, the strength of the first connection area is less than the strength of the second connection area, and the first connection area is configured to be actuated to release an internal pressure of the battery cell when the internal pressure exceeds a threshold. The battery cell, battery, and electrical device provided in the present application are capable of reducing the manufacturing cost of battery cells while ensuring the safety of batteries, and further reducing the assembly processes of the battery cells.

Abstract: A method for repairing a wind turbine blade, wherein the wind turbine blade includes a first layer, a second layer, and an inner core layer between the first layer and the second layer, and the method includes: determining a damaged area of the inner core layer, sequentially removing portions of the second layer and the inner core layer corresponding to the damaged area, forming a repair through-hole in the second layer, and forming a damage removal hole in the inner core layer; applying an adhesive inside the damage removal hole, before arranging one or more repair core members side by side on the adhesive; wet/hand laying-up or bonding a prefabricated glass fiber reinforced plastic plate on a surface of the one or more repair core members in the repair through-hole; and maintaining vacuum pressure, while curing the adhesive at room temperature or by surface heating.

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: A reinforced structural layer and a wind turbine blade are provided. The reinforced structural layer includes a plurality of fibers that includes a first fiber, a second fiber, and a third fiber. Any two of the first fiber, the second fiber, and the third fiber are arranged at an angle to each other, and the angle formed between any two fibers is different from the angle between any other two fibers. The plurality of fibers are connected to form a fiber structural layer such that extension directions of the plurality of fibers are oriented in different directions. The reinforced structural layer can form an amorphous reinforcement configuration that effectively resists crack propagation in various directions, thereby effectively countering random crack propagation and providing more comprehensive reinforcement.

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.