46results about How to "Prevent electrolyte leakage" patented technology

Disclosed herein is a cylindrical secondary battery including a cap assembly constructed in a structure in which a vent, which intercepts electric current and discharges pressurized gas when the interior pressure of the battery is increased due to abnormal operation of the battery, is in contact with a top cap having a protruding central part, wherein the end of the vent is bent to surround the outer circumferential surface of the top cap, and a groove for preventing the leakage of an electrolyte and preventing the occurrence of defectiveness of the battery during the assembly of the battery is formed at interfaces between the vent and the top cap such that the groove is arranged in parallel with the outer circumferential surface of the top cap. The secondary battery according to the present invention has the effect of accomplishing high charging and discharging rate, providing uniform output even when external physical impacts, such as vibration or dropping, are applied to the secondary battery, and preventing the occurrence of defectiveness during the assembly of the secondary battery. Furthermore, the leakage of the electrolyte out of the battery is restrained under these conditions. Consequently, the secondary battery according to the present invention can be preferably used as a high-output power source.

The present invention relates to a bipolar battery having at least two battery cells comprising: a sealed housing, a negative end terminal, a positive end terminal, at least one biplate assembly arranged in a sandwich structure between said negative and positive end terminals, and a separator, including an electrolyte, arranged between each negative and positive electrode forming a battery cell. The biplate assembly is provided with an inner barrier of a hydrophobic material around the negative and the positive electrode, respectively, and an outer seal around the edge of each biplate. Each end terminal is provided with a terminal seal. The edge of each biplate is positioned close to the sealed housing to provide means to conduct heat from each biplate assembly to the ambient environment. The invention also relates to a method for manufacturing a bipolar battery and a biplate assembly.

A battery having a bundle of electrodes and separator which is made by winding a positive-electrode plate and a negative-electrode plate together with a seperator therebetween, one of the positive- and negative-electrode plates being electrically connected to a power collecting body, the power collecting body being provided in and welded to an outer package can, wherein a welding portion of the outer package can and the power collecting body comprises a first layer and a second layer which are stacked in a thickness direction of the outer package can at the welding portion, and the second layer is in contact with a surface of the first layer and includes crystal grains that are minuter than crystal grains included in the first layer.

Provided is a cable-type secondary battery having a predetermined-shaped horizontal cross section and extending in a longitudinal direction, which includes a hollow core portion having a gel polymer electrolyte injected thereinto, an inner electrode which includes an inner current collector surrounding an outer surface of the hollow core portion and an inner electrode active material layer formed on a surface of the inner current collector, a separation layer surrounding an outer surface of the inner electrode, an outer electrode which includes an outer electrode active material layer surrounding an outer surface of the separation layer and an outer current collector surrounding an outer surface of the outer electrode active material layer, and a protective coating layer.

The present invention relates to a storage-battery vent cap which adjusts an internal pressure of a storage battery by exhausting a gas generated inside the storage battery to the outside and blocking inflow of external air. The vent cap includes a cylindrical body installed in a vent hole of the battery and formed with an exhaust hole; a cylindrical insert coupled to the body, a partition being formed inside the insert and a coupling hole and a air vent being formed in the partition; and a valve fixed to the coupling hole and elastically deformed by an internal pressure of the battery to open the air vent. The valve has an umbrella-like shape including a valve body having a larger diameter than that of the coupling hole, a cover formed on an outer circumferential surface of the valve body, and a fixing portion downwardly protruded from the valve body.

The embodiment relates to a pouch-typed secondary battery, which includes: an electrode assembly having electrode taps connected to two electrode having different polarities; a case accommodating the electrode assembly with the electrode taps led to the outside; and bonding members sealing the case, in which the bonding members are disposed where the case is bonded. Further, the bonding members of the pouch-typed secondary battery according to the present invention may be composed of one or more layers.

An electrolytic generator to produce a stoichiometric mixture of hydrogen gas and oxygen gas features a case penetration. An electrode extends through the case penetration and clamps a support plate to the inside of the case. The electrode and the support plate are electrically insulated from the case by a non-conducting bushing located within the case and between the support plate and the inside surface of the case. First and second plates are interleaved and maintained in a spaced apart relation along the first and second plate fasteners.

Provided is a gel polymer electrolyte comprising a diacrylamide compound as a precursor for formation of a crosslinked polymer. The gel polymer electrolyte in accordance with the present invention enables improvements of the battery safety by significant reduction of thickness swelling of the battery to thereby prevent the electrolyte leakage, while simultaneously preventing deterioration of charge-discharge rate characteristics and cycle characteristics which may occur upon use of a gel-type electrolyte.

The electrolytic capacitor includes a capacitor element and an electrolyte solution with which the capacitor element is impregnated. The capacitor element is composed of a positive electrode made of a valve metal, an etched negative electrode containing copper, and a separator disposed therebetween. The electrolyte solution contains complex salt of an azole ring compound with copper ions.

A secondary battery including a case having an opening; an electrode assembly housed in the case; at least one current collector coupled to an uncoated portion of the electrode assembly and forming an electrode terminal, wherein the case has a coupling groove recessed toward the at least one current collector; and a cap plate coupled to seal the opening of the case.

A rechargeable battery includes an electrode assembly including first and second electrodes; a case in which the electrode assembly is accommodated; a cap plate combined to the case; an electrode terminal provided in the cap plate and including first and second electrode terminals; and a lead tab including first and second current collecting tabs for electrically connecting the electrode assembly to the electrode terminal, wherein the second current collecting tab includes an electrode connecting portion that is connected to the electrode assembly, and a terminal connecting portion that is bent from the electrode connecting portion and electrically coupled to the cap plate.

Disclosed herein are a redox flow battery and a cell frame. In a cell frame of a redox flow battery, the cell frame comprising: a pair of unit frames adhered to each other; a protection plate shared by the unit frames, wherein each unit frame includes an electrolyte channel formed on a contact region of the unit frame with the protection plate; and a bipolar plate on which an electrolyte flows, wherein the electrolyte is supplied through the electrolyte channel. The cell frame has an integration type structure in which the protection plate is positioned in the cell frame, such that leakage of the electrolyte may be effectively prevented.

A battery assembly includes at least a plurality of battery cells that includes at least a first and a second battery cell each attached to a distributed battery monitoring unit, the second battery cell being associated with an external circuit, the second battery cell connected to a battery management unit (BMU) by way of a pre-formed battery contact shaped to accommodate the external circuit. The plurality of battery cells are electrically connected to at least the BMU such that each of the plurality of battery cells are substantially aligned with each other thereby preserving a battery profile corresponding to unconnected battery cells.

A size AA alkaline battery includes an anode principally composed of zinc functioning as an active material, a cathode principally composed of manganese dioxide or nickel oxyhydroxide functioning as an active material, a separator composed of a nonwoven fabric, an electrolyte composed of an aqueous solution of potassium hydroxide, and zinc oxide.

A cylindrical battery cell includes an electrode assembly of a cathode/separator/anode structure and an electrolyte disposed in a battery case, a cylindrical metal container forms the battery case with the electrode assembly and the electrolyte disposed therein, a cap assembly is mounted on the open upper end of the metal container and a gasket of an elastic material is interposed between the metal container and the cap assembly. The upper end of the metal container is clamped and bent inward toward the central axis of the battery cell to enable the upper portion of the metal container to surround the exterior surface of the gasket. A recessed groove configured to partially receive the gasket by clamping, is formed on the interior surface of the inward-bent portion of the metal container. Accordingly, damage to the gasket interposed between the metal container and the cap assembly is reduced and inhibits electrolyte leakage.

A gasket is made of an injection molded resin integral with a cylindrical boss portion having a through hole in which a current collector is inserted, a rim portion for sealing an opening of a battery case, and a connecting portion for connecting the boss portion and the rim portion, wherein the boss portion has an annular injection portion at an end face thereof, which is a trace of an injection molding gate, a ratio (S₁/S₂) between an axial cross-sectional area (S₁) of the boss portion and an axial cross-sectional area (S₂) of the injection portion is in the range of 10 to 25, and an outer diameter of the boss portion is in the range of 3.0 to 4.2 mm.

The invention provides a fault detection method and a fault detection device. The fault detection device comprises an energy storage power supply, wherein the energy storage power supply is composed of energy storage power supply modules, and each energy storage power supply module is composed of single super capacitors. The fault detection method comprises the steps of: acquiring a module voltageof each energy storage power supply module during operation of the energy storage power supply; for each energy storage power supply module, calculating to obtain a module voltage equilibrium value and a module voltage fluctuation value based on the module voltage, judging whether the module voltage equilibrium value is greater than a first preset threshold value or not in an acquisition period,and judging whether the module voltage fluctuation value is greater than a second preset threshold value or not in the acquisition period; and if the module voltage equilibrium value is greater than the first preset threshold value in the acquisition period, and/or the module voltage fluctuation value is greater than the second preset threshold value, determining that the energy storage power supply modules have a fault until the determination of all the energy storage power supply modules in the energy storage power supply is completed. The fault detection method and the fault detection device realize the detection of whether the energy storage power supply modules have a fault, and further realizes the purpose of predicting the occurrence of electrolyte leakage or burnout of the energy storage power supply.

The invention discloses a power failure alarm circuit and a control method thereof, and relates to the field of power failure alarm circuits. The power failure alarm circuit comprises a discharge module, an isolation module and a power failure electric voltage detecting module, wherein the input end of the discharge module is used for being connected with an input power supply; the input end the of the isolation module is used for being connected with the input power supply, the output end of the isolation module is connected with the input end of an energy storage unit, and the output end ofthe energy storage unit is used for being connected with a function module of terminal equipment; the input end of the power failure electric voltage detecting module is connected between the discharge module and the isolation module, the output end of the power failure electric voltage detecting module is used for being connected with the function module, a CPU is arranged between the output endof the power failure electric voltage detection module and the function module, the power failure electric voltage detecting module is used for detecting the voltage of the input power supply, after voltage dividing is carried out, the divided voltage is transmitted to the CPU, and the CPU is used for judging whether the divided voltage is less than a preset power failure detection threshold or not. The power failure alarm circuit and the control method thereof is suitable for a PON gateway, a set-top box, a fusion terminal and other terminal equipment, and the voltage of the input power supply is enabled to be rapidly reduced, so that the capacity, cost and size of an energy storage unit are reduced.

The invention relates to a magnesium battery electrolyte. The electrolyte comprises gel-state electrolyte salt, the chemical formula of the electrolyte salt is [MgXMp] [B (ORO) 4] n, wherein X is selected from one or more of -monovalent halogen ions and halogen-like ions; m is a coordination agent; p is selected from any integer from 1 to 5; n is selected from any positive integer; R is selected from a group with a general formula of -(Cn1Hn2Yn3O4)-, Y is selected from one or more of -monovalent halogen ions and halogen-like ions, n1 is selected from any integer between 2 and 10, n2, n3 and n4are all integers greater than or equal to 0, and n2 + n3 is less than or equal to 2n1. The invention also relates to a preparation method of the magnesium battery electrolyte. The preparation methodcomprises the following steps: mixing anhydrous magnesium salt, anhydrous polyol and a non-aqueous solvent to obtain a mixture; and reacting the mixture at a temperature of 25 DEG C to 200 DEG C, wherein the anhydrous magnesium salt is MgXBH4, and the anhydrous polyol is OH-R-OH. The invention further relates to a magnesium battery comprising the magnesium battery electrolyte.