Abstract: This non-aqueous electrolytic solution secondary battery has a wound electrode body in which a positive electrode and a negative electrode are wound with a separator interposed therebetween, a non-aqueous electrolytic solution, and a battery case for accommodating the wound electrode body and the non-aqueous electrolytic solution. The relationship between the elemental nitrogen concentration A1 derived from a dinitrile-group-containing compound in an outermost circumferential surface of the wound electrode body, and the elemental nitrogen concentration B derived from a dinitrile-group-containing compound in an inner region located further inward than the outermost circumferential surface of the wound electrode body, satisfies A1>B.

Abstract: A state determination device for a lithium-ion rechargeable battery includes a storage device and an execution device. The storage device stores deposition determination mapping data for defining a deposition determination mapping that uses a difference variable as an input variable and outputs information on whether lithium is deposited on a negative electrode of the lithium-ion rechargeable battery. The difference variable indicate information on a difference between a surface concentration of the negative electrode active material and an average concentration of the negative electrode active material in the lithium-ion rechargeable battery. The execution device is configured to execute a determination acquisition process for acquiring a value of the input variable of the deposition determination mapping, and a determination process for determining deposition of lithium by inputting the value of the input variable of the deposition determination mapping to the deposition determination mapping.

Abstract: The present disclosure provides a detection system and a detection method for a composite detector, comprising a composite detector, a constant-temperature box, a smoke generator, a standard gas storage tank, a gas collection device and a laser Raman spectroscopy analyzer; the constant-temperature box is sealed, and both the composite detector and the gas collection device are arranged in the constant-temperature box; the smoke generator, the standard gas storage tank and the laser Raman spectroscopy analyzer are all arranged outside the constant-temperature box; the constant-temperature box, the smoke generator, and the standard gas storage tank are used to simulate the environment battery thermal runaway, the laser Raman spectroscopy analyzer obtains a first detection data of gas, the composite detector obtains a second detection data, by comparing and analyzing the first detection data with the second detection data, the composite detector is calibrated and a qualitative and quantitative detection result i

Abstract: The present application provides a chain-type roller coating apparatus, including a liquid coating roller and a synchronizing wheel. The synchronizing wheel is provided with a mounting hole. A proximity switch is arranged on an outer side of the synchronizing wheel. The synchronizing wheel is further provided with a trigger element which is configured to be sensed by the proximity switch. The liquid coating roller is assembled with the mounting hole of the synchronizing wheel by a connecting shaft. A shaft main body of the connecting shaft is equipped with a rotation support device configured to support a rotation of the shaft main body. The rotation support device is equipped with a first lifting driving device configured to drive the rotation support device to ascend or descend vertically. A ranging sensor is arranged exactly above the liquid coating roller.

Abstract: The present disclosure provides a fire extinguishing system for an energy storage container which includes a fire control main engine, a cluster-level and cabin-level perfluorohexanone fire subsystem for implementing the cabin-level perfluorohexanone fire prevention, and a PACK-level water fire subsystem for implementing the water fire prevention in a battery box. According to the fire extinguishing system for an energy storage container, the present disclosure also provides a fire pre-warning control method for an energy storage container. The fire extinguishing system and the fire pre-warning control method provided by the present disclosure adopt a combined use of multi-component fire extinguishing agents and can implement a full flood irrigated PACK-level water fire prevention and a full submerged space-level perfluorohexanone fire prevention.

Abstract: A non-aqueous electrolyte secondary battery according to one embodiment, wherein a mixture layer of an electrode has a first layer formed on a core body, and second and third layers formed on the first layer. The first, second, and third layers contain a binding agent, and the third layer is formed on at least a part of an end of the electrode. The content of the binding agent in the third layer is higher than the content of the binding agent in the first layer, and is greater than 0.8 mass % and less than 2.0 mass %.

Abstract: A sealed battery comprises: a bottomed tubular outer can accommodating an electrode body; and a sealing body for sealing an opening of the outer can. The present invention is characterized in that: the sealing body includes a current blocking mechanism that seals the electrode body together with the outer can and is activated in response to gas pressure inside the battery, and a cap that forms a sealed space above the current blocking mechanism; and the cap includes an explosion-proof valve that opens in response to the gas pressure inside the battery.

Abstract: In a manufacturing process of a battery or a circuit board, or a printing process, there is a case where a long sheet material is conveyed from an unwinding unit to a winding unit. One object of the present disclosure is to provide a technique capable of preventing the long sheet material from being rubbed by a roller when the material is conveyed. The present disclosure relates to a conveyor adapted for a battery manufacturing process. The conveyor comprises a roller configured to convey a long sheet material, a shaft through the roller; a bearing installed between the roller and the shaft, and a driver configured to rotate the shaft in the same direction as a rotating direction of the roller conveying the long sheet material.

Abstract: A method for manufacturing a lithium-ion rechargeable battery includes manufacturing a positive electrode plate that includes a positive electrode mixture layer containing a positive electrode active material, lithium hydroxide, and lithium acetate; manufacturing a negative electrode plate that includes a negative electrode mixture layer containing a negative electrode active material and a sodium salt; and injecting a non-aqueous electrolyte solution including LiBOB into a case that accommodates the positive and negative plates. When “A” represents a mole number of the lithium hydroxide added in the manufacturing the positive electrode plate, “B” represents a mole number of the lithium acetate formed in the manufacturing the positive electrode plate, and “C” represents a mole number of the sodium salt added in the manufacturing the negative electrode plate, 0.04?B/A?0.06 and 1.9?B/C are satisfied. Lithium acetate has a higher solubility in the non-aqueous electrolyte solution than sodium acetate.

Abstract: The present invention provides a positive electrode for nonaqueous electrolyte secondary batteries, the positive electrode having improved adhesion, while suppressing variation in battery characteristics. A positive electrode for nonaqueous electrolyte secondary batteries according to one embodiment of the present disclosure comprises a positive electrode collector and a positive electrode mixture layer that is formed on the surface of the positive electrode collector; the positive electrode mixture layer contains a positive electrode active material, a conductive agent and a binder; the weight average molecular weight of the binder is 1,300,000 or more; and D10 and D90 in the particle size distribution of the binder satisfy (D90-D10)?100 ?m.

Abstract: A generator is horizontally arranged in each plane central portion of horizontal frame bodies of a support frame body which is framed with the upper and lower horizontal frame bodies and a plurality of support poles, and a vertical main shaft of a vertical shaft rotor is integrally connected and supported between rotation shafts vertically facing each other of the upper and lower generators without using bearings to cooperatively move.

Abstract: Disclosed is a storage container for liquefied gas, for example, a storage cabin for marine equipment such as ships. A bottom wall of a storage container includes a bottom wall sealing layer including a central section and at least one annular section. The annular section includes a plurality of first sealing plates and a plurality of second sealing plates, which are alternately arranged in a circumferential direction. The first sealing plates have a circumferential size gradually reduced in a radially inward direction, and the second sealing plates have a circumferential size gradually expanded in the radially inward direction. The sealing layer of the storage container of the present disclosure may be made of standard parts with regular shapes, without requiring special shaped segments, which is simple to process and saves materials.

Abstract: A battery pack includes battery cell having a discharge valve opened when an internal pressure exceeds a set pressure, and case housing battery cell. Case has opening, and opening is blocked by porous plate made of resin. Porous plate has a plurality of through-holes, an expansion gap of a discharge gas is formed by stacking a plurality of the porous plates, through-holes provided in each of porous plates are arranged at non-facing positions not facing through-holes provided in adjacent another porous plate, and the discharge gas of the discharge valve passes through through-holes provided in porous plates and the expansion gap and is discharged to an outside of the case.

Abstract: The present invention provides a multi-element, regionally doped, cobalt-free positive electrode material, which has a molecular formula of LixNiaMnbAlcMgdWeO2, wherein 0.95?x?1.1, 0.5?a?0.9, 0.1?b?0.5, 0?c?0.01, 0?d?0.01, 0?e?0.01, and a+b=1. The positive electrode material comprises an Al-doped region, an Mg-doped region and a W-doped region in an order from the inside to the outside. Also provided is a method of preparing the positive electrode material. The cobalt-free positive electrode material of the present invention can better adapt to a stress release by the positive electrode material regionally doped with Al, Mg, and W elements, achieving a moderate adjustment and avoiding imbalance, so that the material has more stable structure, and better rate performance and cycle performance. The method of preparing the material has a simple process, is easy to implement, and can stably prepare a positive electrode material with excellent structure and performance.

Abstract: A non-aqueous electrolyte secondary battery according to an aspect of the present disclosure comprises: an exterior can which has a bottomed cylinder shape and which has grooved part at an opening part thereof; an electrode body and a non-aqueous electrolyte which are housed in the exterior can; a sealing body which, at the opening part, is fixed by crimping between the grooved part and an opening end part; and an upper insulating plate which is inserted between the electrode body and the sealing body. The upper insulating plate has a first insulating plate which is in the shape of a disc smaller than the inner diameter of the grooved part, and a second insulating plate which is in the shape of a ring and which is disposed below the first insulating plate. The first insulating plate has higher heat resistance than the second insulating plate.

Abstract: Provided is a cylindrical battery in which degradation of sealing properties is suppressed. A cylindrical battery according to an embodiment of the present disclosure comprises a bottomed cylindrical exterior body, an electrode body and a nonaqueous electrolyte that are accommodated in the exterior body, and a circular sealing body that seals an opening in the exterior body with a gasket, wherein the sealing body has a protrusion that abuts the end of the gasket on the outside of the cylindrical battery.

Abstract: Provided is a low-resistance sealed battery in which solidification cracking of a weld part of a negative electrode lead and an outer can is inhibited. A sealed battery according to one aspect of the present disclosure comprises: an electrode body obtained by winding a positive electrode and a negative electrode with a separator therebetween; a bottomed cylinder-shaped outer can that accommodates the electrode body; and a sealing body that blocks an opening part of the outer can. The outer can and a negative electrode lead connected to the negative electrode are welded at a weld part formed from the outside surface of the outer can to the negative electrode lead. The outer can is composed of a metal including Fe, the negative electrode lead is composed of a metal having Cu as a principal ingredient, and the Cu concentration of the weld part is 10 mass % or less.