42results about How to "Reduce bloat" patented technology

The invention provides a pole piece of a lithium ion battery and a preparation method of the pole piece, the pole piece of the lithium ion battery comprises a current collector and an active material coated on the current collector, and by arranging the active material and an adhesive, the active material can be conveniently and rapidly fixed when being extruded and arranged on the current collector along an angle; the assembly state of the active material on the current collector is stabilized, the active material is placed in the slit die cavity to be extruded, the active material moves and deforms towards the single side direction, so that the structure becomes long and narrow, and the end part of the long and narrow active material is connected with the current collector to be rolled, so that the tortuosity of the lithium ion battery pole piece is reduced, and the service life of the lithium ion battery pole piece is prolonged. And the migration rate of lithium ions in the pole piece and the embedding rate of the lithium ions in the active material are accelerated, meanwhile, the problem that the pole piece is expanded and increased due to lithium ion embedding in the thickness direction of the pole piece is solved, and the probability of deformation of the lithium ion battery is reduced.

This disclosure provides a negative electrode, an electrochemical device, and an electronic device. The negative electrode includes: a current collector; and an active material layer located on the current collector; wherein the active material layer comprises a silicon-based material, and the minimum mass ratio of silicon element in the active material layer at different locations within the same area is X1, the maximum mass ratio is X2, and the value of X1 / X2 is M, where M ≥ 0.7; wherein the minimum weight loss ratio of the active material layer at different locations within the same area via thermogravimetric analysis (TG) at 800°C is Y1, the maximum weight loss ratio is Y2, and the value of Y1 / Y2 is N, where N ≥ 0.7. This disclosure improves the rate performance and cycle performance of the electrochemical device and reduces the expansion of the electrode assembly by uniformly dispersing the silicon-based material and binder in the active material layer.

The utility model discloses an auxiliary exhaust pillow, including one for human body kneels and lies in prone position posture air cushion, and air cushion is the flexible structure formed through the inflation in hollow part, the first support part is arranged in the center of air cushion, and the second support part is arranged in the tail part of air cushion, and air cushion is divided into two cavities through the first support part, and two cavities are first cavity and second cavity respectively, the first through -hole that is adapted to the outer contour of face is seted up in the first cavity of air cushion top portion position. Through design for human body kneels and lies in prone position using air cushion structure, and cooperate the support of first support part to abdomen, make that patient abdomen is in natural suspension or slight pressure state, combine the posture of knee chest position, significantly promote the movement and natural discharge of abdominal cavity residual gas to rectum direction, effectively alleviate postoperative abdominal distension and abdominal pain. And utilize the space of first cavity can conveniently use cell -phone, and the patient uses cell -phone and carries out office or entertainment.

This invention relates to a silicon-carbon anode material for use in sulfide solid-state batteries, a modification method thereof, and a sulfide solid-state battery and its preparation method. The modification method includes: providing a porous silicon-carbon material, dispersing it in pure water or anhydrous ethanol to obtain solution A; adding a metal source to pure water, and adding oxalic acid or an alkaline solution dropwise while stirring until homogeneous to obtain solution B; transferring solution A to a water bath for stirring, and slowly adding solution B dropwise until the water evaporates, uniformly coating the surface of the silicon-carbon material with the precursor material to obtain the coated material; drying the coated material, and then heating and holding it under a nitrogen atmosphere to convert the surface metal oxide precursor into metal oxide, thus obtaining the silicon-carbon anode material. This invention avoids the addition of a solid electrolyte by constructing a lithium-ion transport layer in situ on the porous silicon-carbon material, thereby improving the initial discharge capacity and cycle stability of the battery, and achieving high capacity retention.

This utility model relates to the field of battery cell technology and discloses a novel soft-pack PACK structure, including a housing. A cover is fixedly connected to the outer wall of the housing, and a sealing ring is fixedly connected to the inner wall of the cover. A support is installed inside the housing, and an epoxy board is fixedly connected to the outer wall of the support. Copper-aluminum composite busbars are installed on the left and right outer walls of the epoxy board, with threaded rods threaded into the interior of the copper-aluminum composite busbars. An aluminum busbar is fixedly connected inside the epoxy board, and a pressure strip is provided on the outer wall of the aluminum busbar. In this utility model, the housing and cover house the battery cells to protect them from external impact damage. An epoxy board is placed on the side of the support, and then an aluminum busbar is installed inside the epoxy board. A pressure strip is then fixed to one side of the aluminum busbar, and a data acquisition line is placed between the pressure strip and the aluminum busbar. This achieves the effects of ensuring battery cell overcurrent, welding strength, and stable data acquisition.

The invention discloses a portable multifunctional surrounding rock geological structural surface permeability in-situ test probe in the technical field of geological monitoring, and the portable multifunctional surrounding rock geological structural surface permeability in-situ test probe comprises a probe main body, two groups of plug units arranged at the two ends of the probe main body, and sealing parts connected to the outer ends of the plug units, the connecting pipes are symmetrically arranged at the two ends of the detection section pipe, the connecting seats are arranged between each group of connecting pipes and the detection section pipe, and the limiting seats are arranged at the outer ends of each group of connecting pipes. A certain number of electrodes, pore pressure sensors, optical sensors, sonic sensors and other detection elements are arranged on the detection section pipe in a concentrated mode, multifunctional data are integrated, the mode of combined testing in the three directions of light, sound and electricity is achieved, rock mass permeability parameters are comprehensively interpreted, and the rock mass permeability detection accuracy is improved. And the accuracy of the detection data is effectively and powerfully guaranteed.

The utility model discloses a mould structure of special-shaped double -sided straight body demoulding, including front mould and back mould, front mould and back mould are used to install on die -casting machine bed, and be provided with feed port on the front mould, still include demoulding device and cooling device, the demoulding device includes locating post, thimble assembly and sliding sleeve, and locating post fixed mounting is on the front mould, and is used for with the interference fit of die casting, and sliding sleeve sliding installation is on the locating post, and die -casting machine bed is used for driving sliding sleeve to slide in the inside of front mould, the die casting has ladder face after forming, the end surface of sliding sleeve is used for with ladder face contact, and thimble assembly is used for to the die casting and carries out the auxiliary demoulding, the cooling device includes the circulating cold water channel of setting in the inside of locating post, the utility model discloses the purpose is to solve the mould demoulding structure among the prior art, when carrying out demoulding to work piece, and thimble impact arrives work piece, will leave the impact mark on work piece, and then leads to the work piece and appears the flaw, influences the problem of subsequent application.

This invention discloses a method for preparing SnCo-doped hard carbon composite material and its application in sodium-ion batteries. The preparation method involves adding an organotin compound to an organic solvent, followed by the addition of a graphene oxide solution. The sodium salt compound is then uniformly dispersed, and a porous tin / graphene compound is prepared through hydrothermal reaction and freeze-drying. This compound is then ground and mixed uniformly with cobalt powder and sintered at 600-1000℃ to obtain a tin-cobalt / graphene composite. This composite is then added to a starch solution, uniformly dispersed, and spray-dried. The mixture is then sintered at 500-800℃ for 1-6 hours under an inert atmosphere, followed by a further increase in temperature to 1000-1800℃ for 1-10 hours to obtain the SnCo-doped hard carbon composite material. The resulting material exhibits excellent power performance and high specific capacity in sodium-ion batteries.

The invention discloses a graphite composite material and a preparation method thereof, a negative plate, an electrochemical device and electronic equipment. The graphite composite material comprises an inner core and a coating layer coating the surface of the inner core, the inner core comprises porous graphite and a silicon simple substance, and at least part of the silicon simple substance exists in pores of the porous graphite; the silicon elementary substance accounts for 7.5 wt%-18 wt% of the graphite composite material in percentage by mass; the mesoporous specific pore volume v of the graphite composite material is 0.04-0.1 cm < 3 > / g, and the compaction fitting coefficient K1 is 3.5 * 10 <-3 >-4.5 * 10 <-3 >. The graphite composite material provided by the invention can realize high silicon doping proportion and low expansion, and the battery has good cycle performance when being applied to the battery.

This application discloses a security protection method, device, and two-wheeled vehicle for an embedded toolkit SDK (Software-Defined Kit), which is applied to the embedded SDK in the electronic control unit (ECU) of a two-wheeled vehicle. Specifically, the obfuscated core algorithm code is encrypted to obtain encrypted core algorithm code. During the runtime phase of the embedded SDK, in response to calls to the target SDK interface from external applications, the unique identifier of the microcontroller (MCU) in the ECU is verified based on a preset authorization list to obtain the MCU's authorization verification result. If the authorization verification result indicates that the MCU authorization verification is successful, the encrypted core algorithm code is decrypted to obtain obfuscated core algorithm code, which is then loaded into the runtime memory (RAM) for execution. This provides effective security protection for the two-wheeled vehicle embedded toolkit SDK.

This application relates to the field of battery technology, specifically to battery cells, battery devices, energy storage devices, and power consumption devices. In the negative electrode sheet of a battery cell, the negative electrode active layer includes a first active layer and a second active layer. The second active layer is disposed between the first active layer and the negative electrode current collector. The first active layer contains a first negative electrode active material, and the second active layer contains a second negative electrode active material. The sphericity of the first and second negative electrode active materials is independently 0.7~0.9, and their roundness is independently 0.42~0.65, respectively. Furthermore, the sphericity and / or roundness of the first negative electrode active material is greater than that of the second negative electrode active material. This application can improve the irreversible thickness growth of the negative electrode sheet during cycling and enhance kinetics, thereby helping to reduce the volume expansion of the cell throughout its life cycle while maintaining fast-charging performance.

This invention relates to a 3D printing additive manufacturing method for die-casting mold steel metal powder. The metal powder has the following mass percentage content: carbon: 0.20-0.28%, silicon: <0.1%, manganese: 0.20-0.5%, molybdenum: 1.30-1.80%, chromium: 1.50-2.50%, vanadium: 0.10-0.50%, tungsten: 0.3-0.6%, nickel: 2.00-3.00%, copper: 0.80-1.00%, sulfur: ≤0.02%, phosphorus ≤0.025%, oxygen ≤0.025%, with the remainder being Fe and unavoidable impurities. The additive manufacturing method employs selective laser melting, with a laser power of 200W-320W, a laser scanning speed of 800-1100mm / s, a scanning spacing ≤0.1mm, and a laser energy density of 68.17-127.08J / mm². 3 The powder layer thickness is ≤0.03mm, the scanning strategy is 65~70°, and the substrate preheating temperature is 120~150℃ to obtain the alloy. Its beneficial effects are: through alloy composition design and selective laser melting, the prepared alloy exhibits low crack sensitivity and high thermal conductivity, achieving a dual improvement in strength and toughness. It ensures the formation of high-toughness, low-expansion lath martensite, providing excellent toughness while possessing extremely good weldability and being less prone to cracking.

The utility model relates to the technical field of digestive system department instruments, and particularly discloses an ascites drainage pipeline fixator which comprises a first positioning seat, a clamping plate is arranged on one side of the first positioning seat, and the clamping plate is connected with the first positioning seat through a spring piece. The second positioning seat is hinged to one side of the first positioning seat, the side, away from the hinged position of the first positioning seat, of the second positioning seat is rotationally connected with a positioning plate, and the positioning plate is connected with the first positioning seat through a fixing piece; the pipeline groove is formed between the first positioning seat and the second positioning seat; in the ascites drainage process, accumulated pipelines can be fixed and guided, winding, pressing, excessive bending and the like are reduced, ascites are drained into the drainage bag through the pipelines to be collected, and when the ascites are large in accumulated liquid amount, thick or not prone to flowing out naturally, the ascites can be sucked out through connection of the negative pressure suction pipe and the connecting pipe. Negative pressure is generated in a corresponding drainage bag connected with the drainage bag connector, the amount of effusion in the abdominal cavity can be rapidly reduced, and abdominal distension and discomfort of a patient are relieved.

The invention relates to the technical field of resource utilization of building solid wastes, and discloses a recycled aggregate and a preparation method thereof, and the aggregate comprises the following raw materials by weight: 40-50 parts of waste concrete blocks; 5-10 parts of brick and tile fragments; 7 to 10 parts of superfine slag powder; 8 to 13 parts of fly ash; 18 to 25 parts of a cementing material; 0.3 to 0.6 part of a high efficiency water reducing agent; 0.5-1 part of a steel slag stabilizer; by constructing a multi-component raw material system which takes the waste concrete as a framework and cooperates with various solid wastes of the tiles, the superfine slag powder and the fly ash, and optimizing the grading of the multi-component raw material system, various building and industrial wastes are fully absorbed, so that efficient recycling of resources is realized, and meanwhile, the beneficial effects that the recycled aggregate has good basic mechanical properties are ensured; and a high-strength, high-toughness, high-wear-resistance, low-expansion and fast-demolding green recycled aggregate solution is provided for old renovation projects.

The application discloses a phosphorus-carbon metal composite negative electrode material, a preparation method and application thereof, and belongs to the technical field of material preparation. The preparation method of the phosphorus-carbon metal composite negative electrode material comprises the following steps: activating and pore-forming of a mixture of a carbon source compound, an activating agent and a molybdenum compound in an activating gas to obtain molybdenum-doped porous carbon; performing gas phase deposition of the molybdenum-doped porous carbon in red phosphorus gas and selenium gas to obtain phosphorus-selenium-molybdenum porous carbon; and performing gas phase deposition of the phosphorus-selenium-molybdenum porous carbon in sulfur vapor and carbon source vapor in sequence to obtain the phosphorus-carbon metal composite negative electrode material. The phosphorus-carbon metal composite negative electrode material utilizes molybdenum selenide and phosphorus to improve the specific capacity of the material, utilizes a porous structure to reduce the expansion of the molybdenum selenide, and utilizes sulfur-doped amorphous carbon deposited on the shell to improve the electronic conductivity of the material, and the application of the material to a sodium ion battery has the advantages of high specific capacity, good rate performance, low expansion and the like, and improved cycle performance.

The utility model relates to the technical field of melamine impregnated paper, in particular to flame-retardant moisture-proof melamine impregnated paper which comprises a melamine impregnated paper body, the melamine impregnated paper body comprises base material gummed paper, and original impregnated paper is glued to the top face and the bottom face of the base material gummed paper respectively. Modified impregnated paper is glued on one side, far away from the base material gummed paper, of the original impregnated paper, a carbon foam layer is glued and filled between the original impregnated paper and the modified impregnated paper, a hydrophobic layer is uniformly coated on one side, far away from the original impregnated paper, of the modified impregnated paper, and a flame-retardant layer is uniformly coated on one side, far away from the modified impregnated paper, of the hydrophobic layer. According to the flame-retardant moisture-proof melamine impregnated paper, the flame-retardant moisture-proof capability of the melamine impregnated paper is improved through the whole structure, and the service life is prolonged.

The invention provides a spleen-tonifying and detoxifying traditional Chinese medicine composition as well as a preparation method and application thereof, and belongs to the technical field of traditional Chinese medicines. The traditional Chinese medicine composition comprises a formula A and a formula B. The traditional Chinese medicine composition has a comprehensive conditioning effect and can relieve chemotherapy side effects, improve intestinal flora distribution, promote intestinal health, enhance the chemotherapy effect and improve the disease control rate. Wherein the formula A focuses on tonifying spleen and regulating qi, and improving nausea, vomiting and other symptoms at the initial stage of chemotherapy, and the formula B is added with medicines for clearing away heat and toxic materials and promoting blood circulation to remove blood stasis on the basis, is suitable for patients with myelosuppression with cancer toxicity residue, and strengthens the effects of clearing away heat and toxic materials and removing stasis; the composition has a multi-target action mechanism, and through the combined action of multiple ways, the treatment effect is enhanced, and the side effect is reduced.

This invention discloses a metasurface-based mid-wave infrared focusing planar filter and its reverse design method. Based on the light field modulation characteristics of metasurfaces, a single-layer all-silicon dielectric metasurface can achieve spectral routing and focusing functions for a specified mid-wave infrared band, thus achieving a filtering effect similar to a Bayer filter, while significantly improving spectral energy utilization. The design utilizes an end-to-end reverse approach, employing genetic algorithms and binary search algorithms (DBS) to optimize structural parameters in stages, fully leveraging the advantages of each algorithm, lowering the design threshold, increasing optimization freedom, and thus improving optimization performance. Therefore, this invention can provide key device support for low-light mid-infrared night vision color imaging applications and expands new design ideas in the field of integration and miniaturization.

The application relates to a business data processing system, method, storage medium and equipment. The system comprises a business operation layer and an object aggregation layer which are independent of each other, and the business operation layer and the object aggregation layer transmit data in an asynchronous decoupling mode. The business operation layer performs a persistent operation on original business data to form persistent business data, and stores the persistent business data in a database. The object aggregation layer processes data of multiple business operation scenes according to a user business request to form aggregation data, and sends the aggregation data as a first response result to a user terminal. The data of the multiple business operation scenes comprises the persistent business data. The application can more quickly and effectively respond to business logic, can support efficient business application in complex, changeable and extended scenes, reduce the bloated, uncontrollable and unsustainable of a lightweight architecture system after continuous iteration, and maintain the lightweight architecture and flexibility of the business system.

The invention relates to the technical field of water-based damping materials, and discloses a low-expansibility water-based damping material and a preparation method thereof.The low-expansibility water-based damping material is prepared from, by mass, 40-60 parts of water-based polyurethane-acrylate resin, 20-30 parts of water-based polyurethane-acrylate resin, 20-30 parts of water-based polyurethane-acrylate resin, 20-30 parts of water-based polyurethane-acrylate resin, 20- 10 to 20 parts of a silane coupling agent; 30-60 parts of a damping filler; 5-10 parts of a dispersant; 3-10 parts of a film forming agent; 0.3 to 1 part of a defoaming agent; and 0.5-3 parts of a thickening agent. The damping characteristic of the WPUA resin is organically combined with the interface enhancement and network crosslinking functions of the silane coupling agent, and the comprehensive high-performance water-based damping material with low expansion, high stability, strong adhesion and corrosion resistance is successfully prepared.

This utility model discloses a railing device, relating to the field of railing technology. The device includes a post, a crossbar, and a wooden wedge-shaped locking strip. The post has a rectangular groove on its side; the crossbar has an insertion part at its end, with a wedge-shaped groove at its top; the locking strip has a right-angled trapezoidal cross-section and achieves mechanical self-locking by inserting its inclined surface downwards into the wedge-shaped groove. When the locking strip is inserted, its inclined surface presses against the inner wall of the wedge-shaped groove, forcing the insertion part to expand inwards and press against the inner wall of the rectangular groove, forming a horizontal compressive force; simultaneously, the top of the locking strip presses against the upper edge of the rectangular groove, resisting vertical pull-out force. This device uses an all-wood structure, eliminating the risk of corrosion from metal nails and extending its service life; at the same time, the wedge-shaped self-locking structure provides strong resistance to pull-out and impact, preventing loosening, and is suitable for outdoor scenarios such as parks and boardwalks.

The utility model provides a leaning and fixing device for handicapped people in an elevator car, which comprises a car mounting plate, a leaning pad is mounted at the inner corner of the car mounting plate, and a mounting piece penetrates through a mounting hole formed in the car mounting plate to fixedly mount the car mounting plate at the internal corner of the car; storage grooves are formed in the inner side of the lower portion of the lift car mounting plate in a mirror image mode, the folding seat plates are connected with the lift car mounting plate through hinges arranged at the storage grooves, and each folding seat plate is provided with a buckling groove. Two reinforcing supporting plates are rotationally mounted below the car mounting plate, and a limiting opening is formed in the inner side of the lower portion of the car mounting plate; the device is installed at the internal corner of the lift car, space is saved, interference is reduced, the arc-shaped face of the inner side leaning cushion is attached to the back, shaking discomfort is relieved, and safety is improved; the folding seat plate can be accommodated in the groove through hinges, and forms a leaning seat plate when being unfolded, so that the legs of the handicapped person are relaxed; and the lower reinforcing supporting plate lifts and supports when being unfolded, so that the bearing and stability are enhanced, and the use safety is guaranteed in all directions.

The application relates to the technical field of lithium batteries, and discloses a pole piece, a single battery and a pole piece manufacturing method. The pole piece comprises a plurality of foils, a plurality of first coating layers and a plurality of second coating layers. The plurality of foils are arranged at intervals, one side or both sides of the foils are provided with the first coating layers, and the second coating layers are arranged between adjacent foils to form a pole piece with a non-continuous foil structure. The second coating layers can provide a partial lithium deintercalation space between adjacent foils, and can effectively reduce the expansion degree of the pole piece in the first direction. Therefore, when the pole piece is used to manufacture an electric core, partial expansion reserved space can be released, the battery energy density can be improved, and in addition, the expansion force transmitted to the outside by the electric core can be effectively weakened, so that the safety is improved. The single battery with the pole piece also has the above advantages.

The utility model relates to the technical field of report generation systems, and discloses a workshop multi-point real-time temperature and humidity report generation system, which comprises a plurality of temperature sensors at different points, a plurality of humidity sensors at different points, a system starting switch, an infrared distance measuring sensor, a singlechip and a LabVIEW upper computer, the temperature sensors are used for collecting workshop temperature data and transmitting the workshop temperature data to the single chip microcomputer; the humidity sensors are used for collecting workshop humidity data and transmitting the workshop humidity data to the single chip microcomputer; and the system starting switch is used for switching the operation state of the system. According to the utility model, the system is equipped with a plurality of temperature sensors and humidity sensors at different points, so that the temperature and humidity data of multiple areas in a workshop can be comprehensively collected, the limitation of single-point monitoring is broken, the universality and representativeness of data acquisition are ensured, and meanwhile, the single-chip microcomputer is used as a core data processing and transmission hub, so that the cost is reduced. Signals transmitted by the sensors can be efficiently received and converted into effective data.

The utility model provides a nasal feeding device which comprises a volumetric flask, a cover body assembly and a liquid outlet assembly. The volumetric flask is provided with a hollow containing cavity, one end of the containing cavity is open to form an opening part, the other end of the containing cavity is provided with a bottom cover, and a liquid outlet is formed in the bottom cover. The cover body assembly comprises a top cover, a stirring piece is arranged on the top cover, the stirring piece is of a flexible structure, the top cover covers the opening part, the top cover and the opening part are arranged in a sealed mode, and the stirring piece is located in the containing cavity. A handle part convenient to hold is arranged on the face, away from the stirring part, of the top cover, and the top cover moves in the containing cavity by operating the handle part, so that liquid in the containing cavity is discharged out of the liquid outlet. The liquid outlet assembly is connected to the liquid outlet and comprises a liquid outlet piece connected with the stomach tube, one end of the liquid outlet piece is provided with a switch piece used for opening and closing the liquid outlet piece, the other end of the liquid outlet piece is provided with an injection tube used for injecting liquid medicine, and a sealing cover is detachably arranged on the injection tube.

The utility model relates to the technical field of medical auxiliary instruments, in particular to a nursing device capable of promoting gastrointestinal peristalsis and relieving abdominal distension, which comprises a nursing belt, a connecting groove is arranged on the inner side wall of the nursing belt, an antibacterial belt is fixedly connected inside the connecting groove, and a heating wire is fixedly connected inside the antibacterial belt. According to the nursing device capable of promoting gastrointestinal tract peristalsis and relieving abdominal distension, through the arrangement of a connecting groove, an antibacterial belt, a heating wire and a massage piece, when the nursing device is used, the antibacterial belt can be supported and fixed through the arrangement of the connecting groove, the antibacterial belt and the nursing device can be connected, the antibacterial belt is made of a silver-series antibacterial material, and the antibacterial belt is made of a silver-series antibacterial material; silver ions have excellent antibacterial performance and can destroy cell membranes and DNA of bacteria, so that the bacteria are effectively killed, after the device is started, a heating wire is heated, the abdomen of a user is massaged, intestinal tract movement is promoted, meanwhile, a massage piece operates, and abdominal distension is relieved.

This application belongs to the field of battery technology, and particularly relates to silicon-carbon composite materials and their preparation methods, electrodes, and batteries. The method includes: mixing asphalt with potassium hydroxide and dopants uniformly, heating to a first preset temperature, passing a crosslinking agent mixed gas at a first preset flow rate for first activation, cooling to obtain asphalt-based porous carbon; adding the asphalt-based porous carbon to an aldehyde compound solution, then adding a phenolic compound and a catalyst and mixing uniformly, performing a hydrothermal reaction, filtering, and performing a second activation to obtain a hard carbon-coated soft carbon porous carbon composite material; immersing the porous carbon composite material in a liquid silane solution and reacting under closed negative pressure to obtain an intermediate material; heating the asphalt to a molten state, then adding the intermediate material and an organoniobium compound and stirring uniformly to perform carbonization to obtain a silicon-carbon composite material; possessing low expansion, high pore volume, low impedance, and high compaction density, thus improving the electrochemical performance of the battery.

In order to overcome the problem of high expansion rate of the silicon-carbon system battery in the prior art affecting the battery performance, the application provides a negative electrode sheet and a silicon-carbon battery; the negative electrode sheet comprises a current collector and an active material layer, the active material layer comprises a first material layer and a second material layer, the first material layer is arranged on the surface of the current collector, the second material layer is arranged on the side of the first material layer away from the current collector, a plurality of first micropores are arranged on the surface of the first material layer, a plurality of second micropores are arranged on the surface of the second material layer, and the plurality of first micropores and the plurality of second micropores are filled with silicon material. The negative electrode sheet provided by the application provides accommodation space for the expansion of the silicon material through the structure of the plurality of first micropores and the plurality of second micropores, improves the expansion problem of the silicon-carbon negative electrode, enables the battery to more efficiently perform electrochemical reactions in the charging and discharging process, and further improves the overall electrical performance of the battery.

The invention relates to a fluid delivery device for delivering a fluid, in particular water, from a storage tank, wherein the fluid can be delivered along a metering line to a spray site by means of a pump, wherein the metering line (1) is connected on the pressure side of the pump by means of a coupling plug (2) connected to a discharge line (3), wherein the fluid delivery module has at least one first valve (4) preloaded by means of a spring, which is designed to prevent a fluid flow from the metering line (1) towards the discharge line (3) and also to release a fluid flow from the discharge line (3) towards the metering line (1) when a predefined minimum pressure p1 is reached on the side of the first valve (4) facing the discharge line (3).