371 results about "Separator (electricity)" patented technology

The invention provides a water electrolysis hydrogen production system and a control method thereof.The water electrolysis hydrogen production system comprises a water tank, a heat exchanger, an electrolytic bath and a hydrogen-water separator which are sequentially connected through a pipeline, and further comprises a water quality optimization branch, a water inlet end and a water outlet end of the water quality optimization branch communicate with the water tank; the system further comprises a branch variable frequency pump and a resin tank; the first drainage valve is arranged on a drainage pipeline communicated with the drainage port of the water tank; an inlet conductometer and an anode thermometer to detect a first real-time conductivity and real-time temperature of liquid entering the anode input end of the electrolytic cell; the outlet conductivity meter is used for detecting the second real-time conductivity of fluid flowing out of the oxygen output end of the electrolytic bath, and controlling the operation of the branch variable frequency pump and the opening and closing of the drain valve according to the first real-time conductivity, the real-time temperature and the second real-time conductivity; the problem that the service life of an electrolytic cell is short due to the water quality problem of a water electrolysis hydrogen production system in the prior art is solved.

The utility model discloses a cabinet electrical element heat radiation structure and a water and electricity separated electrical cabinet, a cabinet body of the cabinet is provided with a first area and a second area which are separated by a first separator plate, and the first area is in a closed state; the first area is provided with a heat conduction piece, and the electrical element needing heat dissipation is attached to the heat conduction piece. The second area is provided with a radiator for radiating heat through circular flow of a cooling medium; the heat conduction piece extends towards the second area and penetrates through the first partition plate, and the part, extending to the second area, of the heat conduction piece extends into the cooling medium of the radiator. The heat dissipation structure can solve the problem that normal use of electrical elements in the cabinet is affected by liquid leakage when a liquid cooling radiator is adopted.

The present application relates to the technical field of separator material preparation, and specifically relates to a microporous membrane, and a preparation method therefor and an application thereof. The microporous membrane comprises a polymer and an ionic liquid. Based on the total mass of the microporous membrane, the microporous membrane comprises 0.01 wt% to 5 wt% of the ionic liquid, optionally 0.1 wt% to 5 wt% of the ionic liquid. In the present application, an appropriate amount of the ionic liquid is introduced into the microporous membrane, and the ionic liquid can be continuously or discontinuously adsorbed on the surfaces of fibers in the microporous membrane. The ionic liquid is adsorbed on the surfaces of the fibers in the microporous membrane by means of a lipophilic end of the ionic liquid, thereby eliminating internal static electricity, also better reducing the reduction of ionic conductivity, increasing the migration speed of ions in an electrolyte, and reducing lithium dendrites. When the microporous membrane of the present application is used as a battery separator, an appropriate amount of the ionic liquid is added into the microporous membrane, so that the problem of electrostatic accumulation of the microporous membrane can be alleviated, and the microporous membrane has relatively low thermal shrinkage, avoiding problems such as affecting battery capacity, electrochemical safety.

The present application discloses a battery separator and a preparation method, a battery, and an electrical device. The battery separator includes a base film, a first adhesive layer located on one side of the base film, and a heat-resistant layer and a second adhesive layer located on the other side of the base film; the first adhesive layer has a first thickness H1μm, the base film has a first coverage C1%, the heat-resistant layer has a second thickness H2μm, the second adhesive layer has a third thickness H3μm, and the heat-resistant layer has a second coverage C2%, satisfying: H2>H1+H3, C2=(0.6~1.2)*(H1+H3) / H2%, and C1=(0.1~0.3)*H2 / H1%. The present application sets an asymmetric separator structure so that the battery separator has excellent heat resistance and improves the overall safety of the battery. In addition, in the process of compounding the separator and the pole piece, the bonding requirements are met after passing through the hot compound roller, which can effectively avoid the powder loss phenomenon caused by the battery separator and the pole piece after passing through the roller.

According to the hydrogen-electricity conversion system based on the solid-state hydrogen storage material, in the system, a hydrogen release tank is a packaging unit for packaging the solid-state hydrogen storage material, a liquid-phase buffer tank contains water, the liquid-phase buffer tank is connected with the hydrogen release tank, and the solid-state hydrogen storage material is stored in the liquid-phase buffer tank. The water adding pump is connected with the liquid-phase buffer tank so as to inject water in the liquid-phase buffer tank into the hydrogen release tank to complete a hydrolysis reaction to generate hydrogen; the washing gas is connected with the hydrogen release tank so as to remove impurities from small solid particles and part of water vapor in the hydrogen; the hydrogen cooler is connected with the scrubber tank to cool the hydrogen; the water separator is connected with the hydrogen cooler so as to separate water vapor in the hydrogen; a fuel cell system is connected to the water separator to generate power based on the hydrogen. The system is stable in reaction and high in safety.

The purpose of the present application is to provide: a separator for a power storage device, which has high adhesion to an electrode and low thermal shrinkage, and which is capable of improving the cycle characteristics and output characteristics of a power storage device; and a power storage device provided with the separator. This separator for an electricity storage device comprises a base material, which is a polyolefin microporous film containing a polyolefin as a main component, and a cover layer, which is disposed on at least one surface of the base material. The base material has a film thickness of 1 [mu] m to 30 [mu] m and an air permeability of 500 sec / 100 cm3 or less. The cover layer contains a particulate polymer of a thermoplastic polymer and an inorganic filler. The particulate polymer includes a protruding particulate polymer that protrudes from the cover layer by at least 0.1 times the thickness of the inorganic filler portion of the cover layer. The polyolefin microporous membrane has a porosity after compression of 30% or more as measured after compression of the base material under conditions of a temperature of 70 DEG C, a pressure of 8 MPa, and a compression time of 3 minutes, and / or has a crystal long period of 37.0 nm or more as measured by a small-angle X-ray scattering (SAXS) method.

The invention discloses a biomass supercritical water gasification hydrogen production and fuel cell hydrogen-electricity coupling system which comprises a supercritical water gasification reactor, a material conveying system, a preheating and heat regeneration system, a gas-liquid separation system, a combustion gas combustion system, a hydrogen purification system and a hydrogen fuel cell system. The material conveying system comprises a storage tank, a high-pressure slurry conveying device, a first high-pressure plunger pump and a water tank; the preheating and heat regeneration system comprises a heat regenerator, a preheater and a second high-pressure plunger pump; the gas-liquid separation system comprises a back pressure valve and a gas-liquid separator; the fuel gas combustion system comprises a combustion gas combustion device and a combustion gas storage tank; the hydrogen purification system comprises a hydrogen purification device, a combustion gas storage tank and a hydrogen storage tank. The supercritical water gasification reaction system and the hydrogen fuel cell power generation system are coupled, hydrogen is directly generated and efficiently converted into electric energy, the advantages of being environmentally friendly and clean are achieved, and efficient utilization of biomass resources is achieved.

Provided is a separator for an electricity storage device, the separator including a base material 10 that is a microporous polyolefin membrane containing polyolefin as a main component and a coating layer 20 disposed on at least one surface of the base material 10, wherein the coating layer 20 includes an inorganic filler 1 and a thermoplastic polymer, the thermoplastic polymer includes a particulate polymer 2 protruding from the surface of the inorganic filler portion 1, and a particle size distribution of the particulate polymer 2 has two or more particle diameters.

The utility model discloses a cabinet electrical element heat radiation structure and a water and electricity separated electrical cabinet, a cabinet body of the cabinet is provided with a first area and a second area which are separated by a first separator plate, and the first area is in a closed state; the first area is provided with a heat conduction piece, and the electrical element needing heat dissipation is attached to the heat conduction piece. The second area is provided with a radiator for radiating heat in a liquid cooling manner; the heat conduction piece extends towards the second area and penetrates through the first partition plate so as to be attached to the heat dissipation face of the radiator. The heat dissipation structure can solve the problem that normal use of electrical elements in the cabinet is affected by liquid leakage when a liquid cooling radiator is adopted.

The invention belongs to the technical field of diaphragm material preparation, and particularly relates to a microporous membrane as well as a preparation method and application thereof. The microporous membrane comprises a polymer and an ionic liquid, and the microporous membrane comprises 0.01 wt%-5wt% of the ionic liquid, optionally 0.1 wt%-5wt% of the ionic liquid, based on the total mass of the microporous membrane. A proper amount of ionic liquid is introduced into the microporous membrane, the ionic liquid can be continuously or discontinuously adsorbed on the surfaces of the fibers in the microporous membrane, and the ionic liquid is adsorbed on the surfaces of the fibers in the microporous membrane through the oleophylic end of the ionic liquid, so that internal static electricity can be eliminated, and reduction of ionic conductivity can be better avoided; and the ion migration speed of the electrolyte is increased, and lithium dendrites are reduced. When the microporous membrane is used as a battery diaphragm, a proper amount of ionic liquid is added into the microporous membrane, so that the problem of electrostatic accumulation of the microporous membrane is solved, meanwhile, the microporous membrane has relatively low thermal shrinkage, and the problems that the battery capacity is influenced, the electrochemical safety is caused and the like are avoided.

Disclosed in the present invention is an integrated reforming power generation test system having wide-range fuel adaptability, comprising a fuel supply subsystem, a catalytic reforming subsystem, a hydrogen purification subsystem, a power generation subsystem, and a test monitoring subsystem. A fuel pump and a fuel delivery pump are connected to a water-gas shift reactor by means of an evaporator and a reformer, the water-gas shift reactor is connected to a pressure swing adsorption device by means of a first gas-liquid separator, the pressure swing adsorption device is connected to a fuel cell stack by means of a hydrogen buffer tank, and a gas chromatograph is connected to the reformer by means of a third gas-liquid separator and to the water-gas shift reactor by means of a second gas-liquid separator. By using a variety of fuel resources to produce electricity, the present invention breaks through the limitation of the scope of traditional single-fuel reforming power generation systems, ensures the reliability of electricity supply, gets rid of the dependence on specific fuels, enhances regional energy safety, and improves the flexibility of energy supply.

The invention discloses a remote oil and gas well exploitation gas recycling power generation system. The power generation system comprises a reformer, a gas mixer for providing reaction gas for the reformer and a combustor for providing heat for reforming hydrogen production reaction of the reformer. The SOFC electric pile is used for reacting the hydrogen generated by the reformer to generate electric energy; the air supply device is used for supplying air required by the reformer and the SOFC electric pile reaction; the oil-gas-water separator is used for separating an oil-gas-water mixture extracted from the oil-gas well; and the converter is used for converting the electric energy of the electric pile into alternating current which is used by an electric tracing band of an oil-gas well shaft and / or daily used by oil-gas well workers. According to the invention, the galvanic pile is combined with a remote oil-gas well, so that energy waste is avoided, and environmental pollution is reduced; and electric energy and heat energy are reasonably utilized, so that the power generation system can be kept stable for a long time under the environment temperature fluctuation.

To efficiently store and utilize the stored heat.SOLUTION: In a heat storage mode, an energy storage device 100 heats solid particles using an electric heater 140 and stores the same in a high-temperature tank 180. In a power generation mode, the energy storage device stops the electric heater, supplies an oxygen containing gas to a fluidized bed device 130, supplies the solid particles from the high-temperature tank to the fluidized bed device, causes a first steam generator 160 to generate steam using heat of either one or both of the oxygen containing gas and the solid particles, and causes a stem turbine generator 210 to generate electricity. After the solid particles are supplied from the high-temperature tank to the fluidized bed device, the energy storage device causes a solid-gas separator 170 to separate the solid particles and supply the same to the fluidized bed device, supplies dried sludge from a silo 150 to the fluidized bed device, burns the dried sludge in the fluidized bed device, causes the first steam generator to generate steam with combustion heat of the dried sludge, and causes the steam turbine to generate electricity.SELECTED DRAWING: Figure 1

The purpose of the present disclosure is to provide: a safer polyolefin microporous membrane; an electricity storage device separator, electricity storage device assembly kit, and electricity storage device using the polyolefin microporous membrane; and an electricity storage device. In one embodiment, the polyolefin microporous membrane comprises at least one of each of a layer A and a layer B, a polyolefin contained in at least one of the layer A and the layer B has one or more types of functional groups, and a crosslinked structure is formed by (1) the functional groups undergoing condensation reactions with each other, (2) the functional group reacting with a chemical substance inside the electricity storage device, or (3) the functional group reacting with a different type of functional group, after accommodation in the electricity storage device.

A method and a system for the coproduction of hydrogen, electrical power, and heat energy. An exemplary method includes desulfurizing a feed stream to form a desulfurized feed stream, reforming the desulfurized feed stream to form a methane rich gas, and providing the methane rich gas to a membrane separator. A hydrogen stream is produced in a permeate from the membrane separator. A retentate stream from the membrane separator is provided to a solid oxide fuel cell (SOFC). Electrical power is produced in the SOFC from the retentate stream.

The invention discloses a heat pump driven device and method for preparing ice slurry in vacuum based on absorption refrigeration cycle, vapor in an evaporation freezing chamber is absorbed by a concentrated solution in an absorber, so that a low-pressure environment is formed in the evaporation freezing chamber, water in the evaporation freezing chamber evaporates and absorbs heat of the water to be cooled, and the ice slurry is prepared. Ice slurry is formed on the ice forming device, is separated by the ice-water separator and is discharged by the ice discharging valve; a regeneration heat source is provided for a generator regeneration concentrated solution through a heat pump condenser, and a cold source is provided for an absorber and an ice-making water source supplemented into an evaporation freezing chamber through a heat pump evaporator; a compressor of the heat pump is driven by redundant off-peak electricity of a power grid or green electricity generated by renewable energy sources. The advantages of a vacuum method and a supercooling method are combined, meanwhile, the problems that the vacuum degree is difficult to maintain and energy consumption is high in the vacuum method can be solved, the problem of ice blockage existing in a freezing method is solved, and a feasible comprehensive solution is provided for ice slurry preparation and green electricity consumption.

This invention provides a fuel cell system that can estimate the nitrogen concentration of gases emitted from the fuel cell at low cost. [Solution] The fuel cell system 1 comprises a fuel cell 2 that generates electricity through an electrochemical reaction between hydrogen gas and oxygen gas and discharges hydrogen off gas containing unreacted hydrogen gas together with nitrogen gas and moisture; a hydrogen supply channel 40 that supplies hydrogen gas from a hydrogen tank 41 to the fuel cell 2; a recirculation channel 50 that recirculates the hydrogen off gas back into the hydrogen supply channel 40; a gas-liquid separator 51 that separates moisture from the hydrogen off gas to obtain dehumidified hydrogen gas and stores the separated moisture; an exhaust valve 54 that exhausts the dehumidified hydrogen gas from the recirculation channel 50; a pressure sensor 52 that detects the pressure in the recirculation channel 50; and a control device 6 that controls the exhaust valve 54. The control device 6 estimates the concentration of nitrogen gas contained in the dehumidified hydrogen gas based on the value detected by the pressure sensor 52, and controls the exhaust valve 54 to an open state when the concentration of nitrogen gas exceeds a predetermined value.

The present invention discloses a novel electricity-chemical co-production system coupling oxy-fuel combustion power generation and CO2 catalytic hydrogenation process. The novel electricity-chemical co-production system includes an oxy-fuel combustion power generation system, a CO2 catalytic hydrogenation to methanol system, and a new energy electrolytic water system. The new energy electrolytic water system is connected to the oxy-fuel combustion power generation system and the CO2 catalytic hydrogenation to methanol system through pipelines respectively. The CO2-rich flue gas discharged from the oxy-fuel combustion power generation system and the H2 generated by the new energy electrolytic water system are used as raw materials for the CO2 catalytic hydrogenation to methanol system. The O2 generated by the new energy electrolytic water system is used as the raw material for oxy-fuel combustion power generation, replacing the air separator required for preparing O2 in conventional oxy-fuel combustion power generation. The oxy-fuel combustion power generation system provides heat and power consumption for the CO2 catalytic hydrogenation to methanol system, and the CO2 catalytic hydrogenation to methanol system provides heat for the oxy-fuel combustion power generation system. The present invention realizes the co-production of electric energy and methanol, and improves the energy utilization efficiency of the coupling system.

The invention discloses a biomass gas heat pump system and a control method thereof. According to the method, a generator set part and a heat pump unit part are included; the electricity output end of the generator set part is connected with the electricity input end of the heat pump set part; the generator set part comprises a generator set, a radiator, a stop valve, a cylinder sleeve water heat exchanger and a flue gas waste heat recoverer; the heat pump unit part comprises a compressor, an oil separator, a four-way valve, a condenser, an electronic expansion valve, an evaporator and a gas-liquid separator; the system has two operation modes, namely refrigeration operation and heating operation, and can recover engine flue gas waste heat and cylinder sleeve water waste heat during heating, so that the heating capacity is large, and the heating energy efficiency is high. During refrigeration, flue gas waste heat and cylinder sleeve water waste heat need to be discharged into air, and only the heat pump unit supplies cold. According to the system, biomass gas serves as driving energy to drive the generator to operate, energy distribution of the generator set and the heat pump is adjusted in good time by reasonably utilizing engine cylinder sleeve water waste heat and smoke waste heat, and the primary energy utilization rate of the whole machine is increased.

The invention relates to the technical field of waste plastic harmless treatment, and discloses a solar heat supply plastic liquefaction-gasification two-step hydrogen-electricity co-production system and method.The system comprises a solar fused salt heat storage system, a liquefaction reactor, a gasification reactor, an organic Rankine cycle power generation device, a gasification reaction system and a hydrogen separator; the input end of the gasification reactor is provided with branches, the input end of one branch is connected with the output end of the liquefaction reactor, and the input end of the other branch is connected with the input end of the solar fused salt heat storage system; the input end of the solar fused salt heat storage system is used for inputting liquid H2O; the input end of the gasification reaction system is provided with branches, the input end of one branch is connected with the output end of the gasification reactor, and the input end of the other branch is used for inputting supercritical H2O; efficient conversion from waste plastic to high-value hydrogen-rich synthesis gas is achieved, meanwhile, input of high-grade electric energy of the system can be effectively reduced through the solar photo-thermal fused salt energy storage technology, and the economical efficiency of the system is improved.

The invention discloses a slurry hydrogen storage fuel cell system, which comprises: a hydrogen storage slurry circulation module for storing and circulating a slurry hydrogen storage material; the slurry hydrogen storage material comprises organic liquid and metal hydride; the fuel cell adopts a liquid metal anode; the fuel cell comprises an anode inlet and an anode outlet; a separator for separating the anode discharge; the metal hydride powder feeder is used for supplementing metal hydride powder to the hydrogen storage slurry circulating module; wherein the slurry hydrogen storage material reacts on a liquid metal anode interface to generate electric energy and form organic liquid vapor; and the organic liquid vapor is discharged into the separator from the anode outlet, is separated, is conveyed into the hydrogen storage slurry circulating module, and is mixed with the metal hydride powder from the metal hydride powder feeder to form a slurry hydrogen storage material. According to the invention, direct power generation of the slurry hydrogen storage material on the fuel cell anode interface is realized, and the power density of the system is greatly improved.

The invention relates to the field of ocean energy utilization, in particular to an ocean temperature difference energy water, electricity and hydrogen cogeneration system based on a non-azeotropic working medium and membrane distillation. The system comprises a direct contact type membrane distillation module, a non-azeotropic working medium circulation module and a seawater hydrogen production module, the direct contact type membrane distillation module comprises a direct contact type membrane distillation assembly which is internally provided with a first hydrophobic breathable membrane and is divided into a feed liquid side and a fresh water side by the first hydrophobic breathable membrane, a hot seawater pump for conveying hot seawater to the feed liquid side, a fresh water tank circularly communicated with the fresh water side, and a heat exchanger positioned between the fresh water side and the fresh water tank; the seawater hydrogen production module comprises an electrolytic cell which is internally provided with a second hydrophobic breathable membrane and is divided into a seawater side and an alkali liquor side by the second hydrophobic breathable membrane, a seawater pump for conveying hot seawater to the seawater side, an oxygen separator and a hydrogen separator for separating oxygen from hydrogen, and a hydrogen treatment assembly. According to the invention, seawater is spontaneously evaporated into water vapor which is absorbed by alkali liquor, so that seawater desalination without electric energy consumption is realized, and hydrogen is prepared by using the alkali liquor.

The invention provides a coal-based supercritical CO2 power generation circulation and compressed CO2 energy storage coupled system and an operation method. The coal-based supercritical CO2 power generation circulation and compressed CO2 energy storage coupled system comprises a coal-based S-CO2 power generation circulation system, a compressed CO2 energy storage circulation system, a fused salt heat storage loop system and a heat storage water loop system. According to the system, S-CO2 is used as a thermal power generation cycle working medium driven by fire coal, and a compressed CO2 energy storage system is coupled, so that the load adjusting requirement of a power grid is met. In the electricity utilization trough period, part of high-temperature and high-pressure CO2 at an outlet of the boiler stores heat energy into the molten salt tank and the hot water tank, and low-temperature CO2 is stored in the high-pressure tank. In the peak period of power utilization, except for coal-fired driving of S-CO2 for power generation, CO2 in the high-pressure tank enters the turbine to do work for power generation after absorbing stored heat energy, and the load response capacity of the system to a power grid is greatly improved. Besides, in the energy storage system, a vortex tube and a gas-liquid separator are used, low-pressure CO2 can be stored in a liquid state, and the size of a CO2 storage tank is remarkably reduced.

The invention relates to a heat, electricity and mechanical energy combined supply system of a two-stage ammonia decomposition hydrogen production device based on reaction and separation coupling, and belongs to the technical field of ammonia decomposition hydrogen production energy comprehensive utilization. Comprising an ammonia gas supply unit, a water vapor supply unit, an air supply unit, a first heat exchanger, a second heat exchanger, a front-section reactor, a rear-section reactor, a gas-liquid separator, a hydrogen storage unit, a proton exchange membrane battery, an ammonia-hydrogen burner, a hydrogen-air burner and a third heat exchanger. The system has the characteristics of complete and compact structure and multiple functions; the system energy utilization rate is high, and energy self-sufficiency can be achieved; energy utilization is achieved, output flexibility is high, regulation and control modes are diversified, and the capacity of outputting heat, electricity, mechanical energy and hydrogen outwards is achieved; the system is low in cost, high in safety and strong in adaptability.

This application relates to the field of hydrogen production, and specifically discloses a hydrogen production drying and regeneration system, which includes a water electrolyzer, a gas-water separator, a cooler, a drying tower, a hydrogen storage cylinder, and a fuel cell; during the water electrolysis process, the water electrolyzer electrolyzes water to form hydrogen and outputs a mixture containing hydrogen to the gas-water separator. The gas-water separator separates the gas in the mixture and inputs the separated gas into the cooler. The cooler cools the gas from the steam-water separator and outputs a gas containing water vapor and hydrogen to the drying tower. The drying tower absorbs the water vapor and outputs hydrogen to the hydrogen storage cylinder; during the power generation process, the hydrogen storage cylinder outputs hydrogen to the drying tower. The drying tower releases the water vapor absorbed during the water electrolysis process. The water vapor and hydrogen output by the drying tower are input into the fuel cell through the cooler, and the fuel cell generates electricity using the water vapor and hydrogen. The purpose of this application is to provide a hydrogen production drying system with a cyclic regeneration function.

The invention discloses a carbon dioxide energy storage cooling and heating system utilizing off-peak electricity and an operation method of the carbon dioxide energy storage cooling and heating system. Comprising a carbon dioxide loop; the carbon dioxide loop comprises a liquid CO2 storage tank, a cold supply heat exchanger, a gaseous CO2 storage device, a compressor, a heat supply heat exchanger, a pressure reducing valve and a gas-liquid separator; an outlet of the liquid CO2 storage tank is connected with a CO2 side inlet of the cold supply heat exchanger; a CO2 side outlet of the cold supply heat exchanger is connected with an inlet of gaseous CO2 storage equipment; an outlet of the gaseous CO2 storage equipment is connected with an inlet of the compressor; an outlet of the compressor is connected with a CO2 side inlet of the heat supply heat exchanger; a CO2 side outlet of the heat supply heat exchanger is connected with an inlet of the pressure reducing valve; an outlet of the pressure reducing valve is connected with an inlet of the gas-liquid separator; a gas outlet of the gas-liquid separator is connected with an inlet of the compressor, and a liquid outlet of the gas-liquid separator is connected with an inlet of the liquid CO2 storage tank. According to the system, off-peak electricity can be fully utilized, energy storage and flexible supply of cold energy and heat energy are achieved, operation is reliable, the energy utilization efficiency is high, and economical efficiency is good.

The utility model discloses a static electricity removing and winding device for a lithium battery diaphragm, and relates to the technical field of lithium battery diaphragm production. Comprising a winding frame, a first guide roller, a second guide roller and a winding core are sequentially arranged on the winding frame in the running direction of a diaphragm, the first guide roller, the second guide roller and the winding core are all rotationally arranged on the winding frame, a scutching roller is arranged above the winding frame, the scutching roller is located between the first guide roller and the second guide roller, and the scutching roller is located between the first guide roller and the second guide roller. The winding frame is provided with a first guide roller and a second guide roller, a static electricity eliminating rod is arranged on the winding frame and located below the first guide roller, a static electricity eliminating rope is arranged on the winding frame and located below the second guide roller, a driving mechanism is installed on the winding frame, and the driving mechanism is connected with the winding core through a transmission mechanism. According to the winding device, flat winding can be achieved, the tension control precision is improved, the winding hardness is appropriate, a diaphragm is not wrinkled or stretched, and the static electricity amount of the diaphragm is remarkably reduced.

To solve the problems with an electrode type liquid level meter, that electrode bars are heavy making installation and cleaning work troublesome, and that malfunction due to contact between electrode bars, and malfunction due to attachment of trash to a separator occur.SOLUTION: An electrode installed at the lowermost position, as a common electrode, clamps a three-core VA cable from the front and the back using two fasteners, and is tightened with two bolts, and a sharp-pointed truss screw is screwed into a center part of the fastener, and the electrode is caused to contact an electric wire in the middle of the three-core cable. Further, an electrode connected at an upper position of the three-core cable on an opposite side of a side where the common electrode is connected, is fastened with fasteners as described above, and a sharp-pointed truss screw is screwed slightly sideways of a center part of the fastener, and the electrode is caused to contact either the left or right electric wire of the three cores. Two electrodes are caused to respectively contact the left and right electric wires of the three-core cable. Accordingly, an electrode of a liquid level sensor detects a liquid level in a container on the basis of conduction occurring when the common electrode and the two electrodes at the upper positions are soaked in liquid.SELECTED DRAWING: Figure 4

An electricity storage device (1, 101, 201) in which a plurality of electrodes (10, 212), in which a positive electrode layer (13) is provided on one surface of a collector plate (11) and a negative electrode layer (15) is provided on the other surface of the collector plate (11), are stacked via separators (17, 220), the electricity storage device (1, 101, 201) comprising: a plurality of spacers (21, 121) arranged along peripheral edges of the collector plates (11) between the collector plates (11) adjacent to one another in a stacking direction; and a resin frame (25, 125) covering outer peripheries of the plurality of spacers (21, 121) when viewed from the stacking direction, wherein the spacer (21, 121) has a first portion (241) overlapping with the resin frame (25, 125) when viewed from the stacking direction and a second portion (242) extending inward from the resin frame (25, 125) when viewed from the stacking direction, wherein the first portion (241) is bonded to the resin frame (25, 125), wherein the second portion (242) is bonded to the collector plate (11), wherein the resin frame (25, 125) is formed by injection molding, wherein an outer periphery (21b, 121b) of the spacer (21, 121) and an inner peripheral surface of the resin frame (25, 125) are integrated by welding, and wherein the resin frame (25, 125) collectively covers the outer peripheries of the plurality of spacers (21, 121).

Provided are a composite, a sheet, an electrochemical element, and an electricity storage device with which conductivity can be ensured. The composite (10) contains an ester-based solvent (23) in which an electrolyte salt is dissolved and a metal oxide (19), and an ionic liquid (22) adheres to the surface of the metal oxide. The sheet (12) comprises a composite. The electrochemical element (11) contains the composite. An electricity storage device (11) is provided with a positive electrode layer (12), a negative electrode layer (16), and a separator (15) that separates the positive electrode layer from the negative electrode layer, and contains a composite.