539 results about "Coin cell" patented technology

Lighted reading glasses are provided to enable clear reading of normal sized text to occur when the reading material is held at usual distances from the reader in dimly lit or dark locations. The lighted glasses have high intensity lights, such as in the form of LEDs that generate narrow light beam cones and which are oriented via light mounts as by inward canting of the light beam cones to meet and overlap so high brightness light is generated in a conical overlap area of light which is maximized in size in the range of normal reading distances. The light mounts include housings that are very compactly sized via the use of small coin cell batteries for powering the LEDs they hold. The housings are tapered from their maximum width sized to be slightly larger than the diameter of the disc-shaped cell batteries to either end thereof along their length, and have a depth sized to accommodate two of the stacked very thin, e.g., one-eighth of an inch each, coin cell batteries. In this manner, a very small and compact light module is provided that, while especially well-suited for reading glasses due to the preferred inward cant provided by light mounting surfaces of the housing to tailor the location of the overlap lighted area to the reading area, can also be used with other types of head gear, such as caps or other types of hats.

A compact size wireless sensor for sensing a change of state that includes a sensor switch, a microprocessor, a wireless transmitter, a timer (e.g., a low power clock circuit), an antenna, and a coin cell battery power source. The coin cell battery, which is positioned in a stacking arrangement with the microprocessor, switch, and transmitter, allows the sensor to be of a significantly reduced size. Moreover, to provide long life despite a small battery, the microprocessor is run in a standby mode in which the microprocessor draws little power unless it actually samples the state of the sensor switch during select intervals. Various electronic components individually, or in combination, assist in the sampling (monitoring mode) in such a way as to reduce current consumption from the power source. The compact size makes the sensor ideally applicable for wireless intrusion systems embedded within hollow frames of windows and doors. Not only are such wireless sensors concealed and not readily seen by intruders, but the size allows the sensors to be installed within conventional sized window and door frames without piercing outer walls of the frames (thus avoiding nullification of window and door manufacturers' warranties).

Lighted reading glasses are provided to enable clear reading of normal sized text to occur when the reading material is held at usual distances from the reader in dimly lit or dark locations. The lighted glasses have high intensity lights, such as in the form of LEDs that generate narrow light beam cones and which are oriented via light mounts as by inward canting of the light beam cones to meet and overlap so high brightness light is generated in a conical overlap area of light which is maximized in size in the range of normal reading distances. The light mounts include housings that are very compactly sized via the use of small coin cell batteries for powering the LEDs they hold. The housings are tapered from their maximum width sized to be slightly larger than the diameter of the disc-shaped cell batteries to either end thereof along their length, and have a depth sized to accommodate two of the stacked very thin, e.g., one-eighth of an inch each, coin cell batteries. In this manner, a very small and compact light module is provided that, while especially well-suited for reading glasses due to the preferred inward cant provided by light mounting surfaces of the housing to tailor the location of the overlap lighted area to the reading area, can also be used with other types of head gear, such as caps or other types of hats.

The invention relates to a preparation method and application of a black phosphorus quantum dot and titanium carbide nanosheet composite material. The preparation method comprises the following steps:mixing a single layer or a few layers of Ti3C2 nanosheets with black phosphorus quantum dots dispersed uniformly inside an organic solution, and carrying out simple technologies such as ultrasonic treatment, stirring and drying to obtain the black phosphorus quantum dot and titanium carbide (BPQDs / Ti3C2) nanosheet composite material. The BPQDs / Ti3C2 nanosheet composite material coated on a coppersheet is taken as a working electrode of an energy battery, metal foils are taken as a counter electrode and a reference electrode, a glass microfiber filter membrane is taken as a diaphragm, an organic solution is taken as an electrolyte, and a button battery is assembled inside a glove box filled with high-purity argon. The product can serve as a two-dimensional electrode material, is widely applied to the energy field such as lithium ion batteries, and has excellent charge / discharge performance and cycling stability.

This invention presents a new method to generate therapeutically superior Bipolar PEMFs while significantly reducing the overall power consumption allowing for the use of low-power coin cell batteries; and presents a new frequency format to be followed for long-duration exposure PEMF Therapy devices. This is accomplished using a battery powered crystal clocked microcontroller and H-Bridge to pulse an electromagnetic inductor with a storage capacitor to generate a positive pulse followed by a shorter negative pulse, followed by some period of no current flowing generating frequencies in support of mammalian Circadian Rhythms.

The invention discloses an aqueous zinc ion battery vanadium-based positive electrode material which has the following chemical composition: MxV2O5.nH2O, M is Mg or Sn; 0 < x < = 2; 0 < n < = 2. The preparation method comprises the following steps: dissolving vanadium pentoxide in deionized water, dropwise adding an acidic solution after stirring, stirring in a water bath until the reaction is complete, dissolving M salt in deionized water, dropwise adding the solution after complete dissolution, and carrying out hydrothermal reaction after complete reaction. After the obtained positive electrode material is assembled into a button cell, an electrochemical performance test is carried out, and during the test, the current density range is 0.1-10A g <-1 >, and the voltage range is 0.1-1.8 V.The preparation method is simple and convenient, and has low requirements on experimental conditions. The microstructure of the synthetic material is a nanobelt, and the synthetic material has largerinterlayer spacing so that the layered structure is more stable, deintercalation and intercalation of zinc ions are further facilitated, and the assembled zinc ion battery shows excellent cycling stability and rate capability.

The invention discloses a nucleic-acid extraction, amplification and detection integrated device and a manufacturing method and a detection method thereof. The nucleic-acid extraction, amplification and detection integrated device comprises a light-cured-resin upper cover printed by the 3D printing technology and a base; the upper cover comprises a sample feeding hole, a control button, a U-shaped clamping fixing hole and a test paper result observation window; an integrated module on the base comprises a paper-base nucleic acid extraction module, an isothermal amplification module and a side-flow test paper detection module; the paper-base nucleic acid extraction module comprises a liquid storage tank, a pyrolysis channel, a washing channel, nucleic acid adsorption paper and a water absorption pad; the isothermal amplification module comprises a heating slice, a U-shaped clamp, a button battery and a PMMA plastic plate; a test-paper detection module comprises a test paper strip and a chromatographic solution storage tank. Finally, the upper cover is pressed on the base, and device assembling is completed. According to the paper-base nucleic acid extraction, amplification and detection integrated device, external device and professional technical persons are not required, and the paper-base nucleic acid extraction, amplification and detection integrated device has the advantages of being low in cost, easy to operate, rapid, easy to carry and the like, and is suitable for the field of molecular diagnosis, and particularly is suitable for resource-lack remote areas.

The present invention includes lithium cobalt oxides having hexagonal layered crystal structures and methods of making same. The lithium cobalt oxides of the invention have the formula Li.sub.wCo.sub.1-xA.sub.xO.sub.2- +y wherein 0.96.ltoreq.w.ltoreq.1.05, 0.ltoreq.x.ltoreq.0.05, -0.02.ltoreq.y.ltoreq.0.02 and A is one or more dopants. The lithium cobalt oxides of the invention preferably have a position within the principal component space defined by the relationship ax.sub.i+by.sub.i.ltoreq.c, wherein x.sub.i={right arrow over (S)}.sub.i.circle-solid.{right arrow over (P)}.sub.c1; y.sub.i={right arrow over (S)}.sub.i.circle-solid.{right arrow over (P)}.sub.c2; the vector {right arrow over (S)}.sub.i is the x-ray spectrum for the Li.sub.wCo.sub.1-xA.sub.xO.sub.2+y compound; the vectors {right arrow over (P)}.sub.c1 and {right arrow over (P)}.sub.c2 defining the principal component space are determined by measuring the x-ray powder diffraction values {right arrow over (S)}.sub.i between 15.degree. and 120.degree. using a 0.02.degree. step size and CuK.alpha. rays for a large sample set of lithium cobalt oxides and using the regression of {right arrow over (S)}.sub.i of the sample set against the capacity fade after 50 cycles of a lithium coin cell that includes a lithium negative electrode and the lithium cobalt oxide as the positive electrode material and that is cycled between 3.0 and 4.3V at a constant current of C / 3 during both charge and discharge cycles; and the values a, b and c are determined by using only the x.sub.i and y.sub.i values for Li.sub.wCo.sub.1-xA.sub.xO.- sub.2+y compounds in the sample set that have a capacity fade after 50 cycles of less than or equal to 15%.

A child locator device which is more user friendly and provides increased reliability and efficiency of operation than previously provided child locator devices. The child locator device is configured to be miniaturized to have an overall less obtrusive design. Miniaturization is provided by one or more of a coin cell battery, a transformer, and a microprocessor. The child locator device includes an anti-tamper device, which prevents the child or a potential abductor from removing the child locator device by actuating an alarm when the child locator device is tampered with or otherwise removed from the wearer. The child locator device system can be configured for a plurality of different receiver units which can be separately activated by the parent / transmitter unit to locate individual children wearing different receiver devices.

A primary cell having an anode comprising lithium and a cathode comprising iron disulfide (FeS2) and carbon particles. The cell can be in the configuration of a coin cell or the anode and cathode can be spirally wound with separator therebetween and inserted into the cell casing with electrolyte then added. The electrolyte comprises a lithium salt dissolved in a nonaqueous solvent mixture which may include an organic cyclic carbonate such as ethylene carbonate and propylene carbon. The cell after assembly is subjected to a two step preconditioning (prediscahrge) protocol involving at least two distinct discharge steps having at lease one cycle of pulsed current drain in each step and at least one rest period (step rest) between said two steps, wherein said step rest period is carried out for a period of time at above ambient temperature. The preconditioning improves cell performance.

A method for preparing a cathode material of a lithium ion battery from mixed waste alkaline batteries comprises the following steps of: using cathode materials of waste alkaline zinc-manganese batteries and cathode materials of waste lithium ion batteries as raw materials, dissolving the cathode materials with nitric acid with a certain concentration, and adding corresponding nitrate into a dissolution liquid to regulate proportions of metal cobalt, nickel and manganese ions; taking sodium hydroxide as a precipitant, preparing a nickel-cobalt-manganese hydroxide precursor by a co-precipitation method, carrying out filtering and drying, mixing the precursor with a certain amount of lithium carbonate, and placing the mixture in a muffle furnace for calcination to obtain a ternary cathode material LiNi<1 / 3>Co<1 / 3>Mn<1 / 3>O2. Morphology and structural characterization of an obtained product are carried out by means of a spectrograph, an X-ray diffractometer, a scanning electron microscope and an energy disperse spectroscopy, the product is used to produce a button cell, and characterization is carried out on the electrochemical performance of the button cell by means of a LAND tester. A result shows that the initial discharging capacity of the prepared new battery is 158.3mAHg<-1> when pH is controlled to be 8, the calcination temperature is 850 DEG C and the calcination time is 10 hours during the precipitation reaction. According to the research, various models of waste alkaline batteries can be simultaneously recycled, the production cost of the battery cathode material is reduced, and the method has high economical and social benefits.

Described herein is a device and system for very low power wireless communication between small transceivers, which are applied to objects and remote databases or programs. The disclosed device and system requires so little energy that ordinary inexpensive coin cells can power a transceiver for many years. The system disclosed herein gives the benefits of true bi-directional interactive communication but at a very low cost and power requirement. The ability of the transceiver to respond using its own power source represents a fundamental advance in the state of the art over traditional RFID methods.

The invention discloses an invoicing monitoring device, an invoicing system and an invoicing method applied to tax control. The invoicing system comprises the invoicing monitoring device, host terminal equipment and mobile storage equipment, wherein the invoicing monitoring device comprises a master control security chip, a wireless communication module and a real-time clock and also comprises a chargeable battery and a button battery, the chargeable battery supplies power to the chip and the wireless communication module, and the button battery supplies power to a clock; the master control security chip comprises a security information storage unit, a user information storage unit and an invoicing monitoring unit, wherein the security information storage unit is used for calculating the encryption algorithm and the encryption key of a tax control code, the user information storage unit is used for storing the relevant invoice information of a taxpayer, and the invoicing monitoring unit is used for judging whether invoice detail data is legal or not; and the mobile storage equipment is used for storing the invoice detail data and the tax control code sent from the host terminal equipment. The invoicing monitoring device can be manufactured into portable equipment with small volume. Through the invoicing system and the method, invoicing and tax return flexibility and convenience can be effectively improved so as to better meet the use requirements of users.

An in-situ coin cell includes a case, a cap coupled to the case, and an energy storage member disposed between the case and the cap, where a through hole is defined in at least one of the case and the cap, the energy storage member includes a current collector adjacent to the through hole, and another through hole is defined in the current collector. The in-situ coin cell may further include a transparent window between the current collector and at least one of the through holes.

The invention relates to a novel mining helmet, which comprises a hemispherical hat body. The outer side of the hat body is provided with a protective layer, a lining layer I, a damping spring layer and a lining layer II are arranged in sequence from the protective layer to the inside, a button battery and an audible prompter are arranged between the lining layer I and the lining layer II, the outer side face of the hat body is provided with a groove, and a signal receiver is embedded in the groove and is connected with a remote control through transmission of infrared signals. The novel mining helmet has the advantages of light weight, durable structure and good protective effects. Damping can be realized effectively in case of impact, and damage can be minimized. In addition, workers can be effectively prevented from taking and placing the helmet by mistake, and the time for the workers to look for the helmet can be shortened.

A miniature flashlight device includes a housing having a base and a cover adapted to interfit with the base so as to form therewith an outer enclosure for receiving an electric bulb and an inner enclosure within the outer enclosure for receiving a button-cell battery. The cover has a flexible portion overlying the inner enclosure and capable of being depressed by a user from an outer relaxed configuration to an inner flexed configuration in which the flexible portion of the cover is deflected toward the inner enclosure and capable of returning to the outer relaxed configuration upon release by the user.

The invention discloses a preparation method of a high-performance co-doped lithium titanate electrode material. The method comprises: adding titanium dioxide, a lithium source and a metal ion source into a solvent, carrying out high-energy ball milling and uniform mixing to obtain precursor grout, and then drying the precursor grout in an air dry oven at a temperature of 60 to 120 DEG C to obtain precursor powder; then calcining the precursor powder for 10 hours at a high temperature in a muffle furnace with a temperature of 700 to 1,000 DEG C to obtain metal ion doped lithium titanate; and finally, carrying out mixing and heat treatment on the doped lithium titanate and a nitrogen source or a carbon source to obtain the doped lithium titanate electrode material of which the outside is coated with a conductive layer and the inside is doped with metal ion bodies. The lithium titanate material synthesized by the method is prepared into a button cell by using metal lithium as a cathode, and capacitance of the button cell can reach 132.7mAh / g under a current density of 10C. The preparation method can be applicable to commercialized mass production, and the prepared lithium titanate product is stable in performance, and can be applied to the field of a high-power battery.

The invention discloses a bird nesting prevention device for an electric power transmission tower, belongs to the technical field of electric power transmission towers, and aims to solve the problem that a trip short circuit of a power transmission line is easily caused by the reason that existing birds easily stop and nest on the electric power transmission tower. The bird nesting prevention device comprises a disc, wherein the disc is connected with a concave clamping block in a sliding manner. A plurality of groups of bird nesting prevention devices are selected and are respectively mountedat parts, which are easily nested by the birds, of the electric power transmission tower; when the birds stop on the disc, the disc slides and presses down along the concave clamping block due to theweight of the birds after the birds stop; a copper embedding piece in an insulating insert is respectively in contact with a conducting strip A and a button cell; and a buzzer makes high-decibel sound to frighten the birds which stop on the electric power transmission tower, so that the birds are prevented from nesting on the electric power transmission tower.

A hermetically sealed coin cell is described. The coin cell has the opposite polarity terminals isolated from one another by a glass-to-metal seal. Glassing a conductive disc inside a ring of greater diameter and height forms this seal. The height of the ring is equivalent to the desired height of the cell. The disc acts as one cell terminal, which can be positive or negative, and the ring serves as the other terminal. In plan view, both terminals are on the same side of the cell. This allows for easy mounting and connection to an electric circuit board, and the like.

An in-situ X-ray analyzed coin cell battery includes a case, a cap combined with the case, and an energy storage member provided between the case and the cap. A hole through which an X-ray is irradiated is defined in at least one of the case and the cap.

The invention discloses a micro mud floating electronic pressure gauge, a working method thereof, and a pressure measurement device, relates to the field of oil and gas extraction, and aims to provide a device for measuring underground pressure and temperature in the mud drilling process in real time, and a working method thereof. The technical key point is that: a button cell, a singlechip with acquisition software, a circuit board, a connection block, and a pressure chip are stacked in a shell sequentially from bottom to top; the shell is a cylindrical shell of which the upper and lower ends are provided with openings, and the interior and the exterior of the shell are isolated by isolation protective adhesive; the pressure gauge acquires temperature and pressure information intermittently under a well; and the pressure measurement device comprises the pressure gauge, a data loading system, and a pressure and temperature calibrating device. The pressure gauge is as small as drill cuttings, so the pressure gauge can float in mud and move along with mud, measure pressure timely and recover data, and does not influence the drill construction.

This invention discloses a leakage detecting device and a method to detect leakage. Pulsed laser light L is condensed with a reductive condensing optical system 51, fairing it to a circular geometry corespondent to the geometry of a negative electrode face 23 the leakage of lithium electrolysis solution of a lithium coin cell 2 is be worried. The pulsed laser light L condensed to a circular geometry is irradiated to the central portion of negative electrode face 23 of the lithium coin cell 2. Leakage of lithium electrolysis solution from a lithium coin cell 2 is detectable with a high degree of accuracy, even if fluorescence F generated from emission by irradiation of pulsed laser light L might as well be determined from quantification with a discriminating device 67 after spectral analysis with a fluorescence spectrometer 65.

The invention belongs to a novel energy material, and particularly relates to a method for preparing a nanometer lithium iron phosphate / carbon compound with stable low temperature performance. The method comprises the following steps of: mixing an iron source, a lithium source, a phosphorous source and a compound carbon source according to a certain proportion; performing ball milling; drying; and calcining in an inertial atmosphere to obtain a lithium iron phosphate / carbon compound, wherein the particle size is smaller than 150 nanometers; carbon is uniformly coated on the surfaces of particles; the thickness of a carbon layer is about 2 nanometers; and the compound carbon source plays an important role in controlling a material structure. After the material is assembled into a button cell, the discharging capacity is 160mAh / g at the rate of 0.1C at the room temperature, the discharging capacity is 126mAh / g at the rate of 0.1C at the temperature of 20 DEG C below zero, and the capacity conservation rate is still over 97 percent after 500 cycles at the rate of 0.6C at the temperature of 20 DEG C below zero, so that the problem of unstable low temperature performance of a lithium ion battery is solved. The method has the advantages of low cost, simple production process and high safety, and the prepared compound can be applied to the field of portable equipment, power electric vehicles and the like.

A method and associated apparatus for preventing applying a reverse polarity voltage to an electronic circuit from a coin cell used to power such circuit by providing a first insulating wafer over the top conductive surface of a coin cell and a second insulating wafer over the bottom conductive surface of the cell. The first wafer has a central opening and the second wafer is designed to cover the portion of the bottom conductive surface corresponding to the opening of the first wafer so that when the two wafers of the protection system are placed over the coin cell with the first wafer and the insulating area positioned on the top and bottom conductive surfaces respectively, the insulating area extends fully under the first opening.

The invention relates to a special automatic cleaning instrument for low-voltage direct current electromagnetic pulse-type contact lenses. The cleaning instrument comprises a movable upper cover and a shell, wherein the movable upper cover is movably connected with the shell; the shell comprises a fixing plate and a lower bottom cover; the fixing plate is fixedly connected with the lower bottom cover; a control circuit, a power part and a cleaning part are arranged in the shell; and a USB charging port is formed on the lower bottom cover. The special automatic cleaning instrument is smaller in size and more convenient to carry, and the cleaning instrument avoids a problem of a No.7 dry battery which is frequently changed and is more environment-friendly; the cleaning instrument is stronger in dirt-removing power, and is specifically suitable for cleaning various contact lenses; and the cleaning instrument can guarantee perfect combination of damping variable frequency ultrasonic and button battery, a USB charger and sharp vibrating energy irreproachably.

The invention discloses a billing monitoring device, a billing system and a billing method applied to tax control. The billing system comprises the billing monitoring device and host mobile terminal equipment; the billing monitoring device comprises a main control security chip, a wireless communication module and a real-time clock, and further comprises a rechargeable battery for supplying power to the chip and the wireless communication module and a button cell for supplying power to the real-time clock; and the main control security chip comprises a security information storage unit for storing an encryption algorithm and an encryption key for calculating a tax control code, a user information storage unit for storing relevant bill information of taxpayers and a billing monitoring unit for judging whether billing detail data is valid. The billing monitoring device can be made into a device that is small in size and convenient to carry; and tax control applications of ticket buying, billing, taxation and the like can be completed via the billing monitoring device and storage equipment, so that the flexibility and convenience of billing and taxation are effectively improved and the using requirements of users are better met.

The invention discloses a lithium-philic heteroatom and metal oxide co-doped three-dimensional fiber frame lithium battery negative electrode and preparation, and belongs to the technical field of lithium battery negative electrodes. The preparation method specifically comprises the following steps of synthesizing zinc hydroxide in a gelatin solution to form uniformly dispersed turbid liquid; spinning the turbid liquid on the surface of a copper foil by utilizing an electrostatic spinning technology to form an electrostatic spinning fiber membrane, and then standing at room temperature to volatilize the solvent completely to form the copper foil with a gelatin spinning membrane; heating to convert zinc hydroxide into zinc oxide; assembling the modified copper foil and a metal lithium sheetinto a button cell, standing for 10 hours, and depositing metal lithium on the modified copper foil by using an electrochemical deposition method; and disassembling the button cell and taking out thecopper foil to obtain the required metal lithium negative electrode, so that the generation and growth problems of lithium dendrites of the lithium negative electrode during the battery cycle processare solved, and the lithium negative electrode has the excellent cycle stability.