Abstract: The ECU performs a step of determining whether charging/discharging control is being executed, a step of acquiring the temperature of the terminal portion when it is determined that charging/discharging control is being executed, and a step of determining the charging power limit value, a step of setting a discharge power limit value, and a step of performing charge/discharge control using the set charge power limit value and the set discharge power limit value.

Abstract: A battery system includes at least one pack in which an all-solid-state battery cell is sealed, and a sensing unit configured to sense deformation of the at least one pack due to change in internal pressure of the at least one pack.

Abstract: A vehicle on which an all-solid-state battery is mounted includes the all-solid-state battery, and a case that accommodates the all-solid-state battery. The vehicle is configured such that, when gas is generated in the case, a blocking process is executed to separate a vehicle cabin from outside air.

Abstract: The all-solid-state battery pack includes an all-solid-state battery containing a sulfide solid electrolyte, a battery case housing the all-solid-state battery, and a desulfurization unit disposed at a communication port or inside the battery case. The desulfurization unit includes a unit case and a desulfurization agent enclosed in the unit case. The desulfurization agent contains an alumina-based desulfurization agent. The desulfurization unit includes a carbon material enclosed in the unit case.

Abstract: A battery system includes: a battery case; a battery housed in the battery case, the battery being composed of a sulfide-based all-solid-state battery; a first detection unit located on a bottom surface of the battery case inside the battery case and configured to detect hydrogen sulfide; a second detection unit located vertically above the bottom surface inside the battery case and configured to detect hydrogen sulfide; and a control device. The control device includes an abnormality processing unit configured to perform an abnormality process based on detection results from the first detection unit and the second detection unit. The abnormality processing unit is configured to perform a first abnormality process when hydrogen sulfide is detected only by the first detection unit, and to perform a second abnormality process when hydrogen sulfide is detected by the second detection unit.

Abstract: A battery system includes a unit cell including a sulfide-based all-solid-state battery, a battery module in which a plurality of the unit cells is stacked between a pair of restraining members, an intermediate plate disposed between the stacked unit cells, a detection unit configured to detect a load applied to the intermediate plate, and an estimation unit configured to estimate generation of hydrogen sulfide in the unit cell, based on a change in load applied to the intermediate plate.

Abstract: A battery system that avoids an over discharge with a simple sensor element is provided. The battery system comprises: a battery pack including a plurality of battery cells connected in series, a monitoring unit that monitors a condition of the battery pack, and a control unit that controls a discharge of the battery pack. The control unit calculates capacity condition A of the battery pack at a first discharge cutoff voltage based on the total voltage and the total current, estimates capacity condition B of the battery pack at the first discharge cutoff voltage based on the total current and the temperature, determines an occurrence of an over discharge based on the capacity condition A and the capacity condition B, changes the first discharge cutoff voltage to a second discharge cutoff voltage that is higher than the first discharge cutoff voltage, when the occurrence of the over discharge is determined.

Abstract: A battery system avoids an over discharge with a simple sensor element is provided. The battery system comprises: a battery pack including a plurality of battery cells connected in series, a monitoring unit that monitors a condition of the battery pack, and a control unit that controls a discharge of the battery pack. The control unit calculates capacity condition A of the battery pack at a first discharge cutoff voltage based on the total voltage and the total current, estimates capacity condition B of the battery pack at the first discharge cutoff voltage based on the total current and the temperature, determines an occurrence of an over discharge based on the capacity condition A and the capacity condition B, changes the first discharge cutoff voltage to a second discharge cutoff voltage that is higher than the first discharge cutoff voltage, when the occurrence of the over discharge is determined.

Abstract: The battery of the present disclosure comprises a plurality of electrode bodies, wherein one of the electrode bodies and another of the electrode bodies are connected via a conductive material, each of the electrode bodies includes a metal current collector, an active material layer, and an electrolyte layer, the metal current collector has a connection surface which contacts the conductive material and a laminate surface which contacts the active material layer, and a ten-point average roughness of the laminate surface is less than a ten-point average roughness of the connection surface. According to the battery of the present disclosure, both adhesion between the metal current collector and the active material layer in the electrode body and connectivity between the electrode bodies via the conductive material can be achieved.

Abstract: The battery of the present disclosure comprises a plurality of electrode bodies, wherein one of the electrode bodies and another of the electrode bodies are connected via a conductive material, each of the electrode bodies includes a metal current collector, an active material layer, and an electrolyte layer, the metal current collector has a connection surface which contacts the conductive material and a laminate surface which contacts the active material layer, and a ten-point average roughness of the laminate surface is less than a ten-point average roughness of the connection surface. According to the battery of the present disclosure, both adhesion between the metal current collector and the active material layer in the electrode body and connectivity between the electrode bodies via the conductive material can be achieved.

Abstract: A battery module disposed in a battery pack includes a plurality of flat plate batteries that are stacked; a connection member having a connection member main body that has a plate-shape and disposed in parallel with the flat plate batteries in a stacking direction of the flat plate batteries; and insulation members disposed on side surfaces of the connection member main body in the stacking direction of the flat plate batteries. The connection member has two terminals, a first terminal of the two terminals is connected to a terminal of the flat plate batteries, and a second terminal is connected to a terminal of an adjacent battery module.

Abstract: A module includes a first member that is a battery or a gas tank in which pressure fluctuation happens along one axis direction, a pair of second members, the second members being arranged on end portions of the first member in the one axis direction, respectively, and a binding member binding the first member and the second members while pressurizing them. The binding member is formed as fiber-reinforced plastic (FRP) containing fiber and resin is revolved. The FRP includes a base fiber layer with a fiber direction along a revolution direction, and a reinforcing fiber layer with a fiber direction different from that of the base fiber layer. The reinforcing fiber layer has a non-overlapping portion between both end portions in a revolved state. The non-overlapping portion is positioned in a region facing the first member.

Abstract: The invention provides a laminated all-solid-state battery that can increase volumetric energy density and maintain the shape of the all-solid-state battery, as well as a method for producing the laminated all-solid-state battery. The all-solid-state battery comprises a battery stack having two or more unit cells and an exterior film sealing the battery stack, wherein the battery stack has a hexahedron shape formed by a top surface and bottom surface in the stacking direction and first, second, third and fourth side walls, the exterior film is a single film covering the battery stack from the top surface and bottom surface in a manner covering the fourth side wall, and condition (i) is satisfied when collector tabs protrude from the first or third side wall or condition (ii) is satisfied when collector tabs protrude from the second side wall, as well as a method for producing the all-solid-state battery.

Abstract: A battery module is provided whereby loss of productivity can be minimized even when producing multiple exterior body parts for different battery module sizes. The battery module of the disclosure has an exterior body and an all-solid-state battery stack encapsulated in the exterior body. The exterior body has a tubular body and a pair of covers. The tubular body has flanges at both open ends. The flanges at both ends of the tubular body and the outer edge sections of the pair of covers are each joined forming joints, with the exterior body being sealed by the joints. The all-solid-state battery stack has one or multiple constituent unit cells. The direction of stacking of each of the layers of the constituent unit cell is in the axial direction of the tubular body.

Abstract: A current collector in which, even in the case of using a copper substrate, an electroconductive layer comprising a thermoplastic resin and an electroconductive material and covering the copper substrate provides the same positive temperature coefficient resistance function as the case of using an aluminum substrate. The current collector may comprise: a copper substrate comprising a copper oxide layer that an average content of an oxygen element present within a thickness of 1.0 ?m or less from a surface of the copper substrate, is 10.5 at % or more, and a positive temperature coefficient resistance layer comprising a thermoplastic resin and an electroconductive material and covering the copper oxide layer of the copper substrate.

Abstract: A main object of the present disclosure is to provide a battery system capable of avoiding an over discharge with a simple sensor element.

Abstract: The battery of the present disclosure comprises a plurality of electrode bodies, wherein one of the electrode bodies and another of the electrode bodies are connected via a conductive material, each of the electrode bodies includes a metal current collector, an active material layer, and an electrolyte layer, the metal current collector has a connection surface which contacts the conductive material and a laminate surface which contacts the active material layer, and a ten-point average roughness of the laminate surface is less than a ten-point average roughness of the connection surface. According to the battery of the present disclosure, both adhesion between the metal current collector and the active material layer in the electrode body and connectivity between the electrode bodies via the conductive material can be achieved.

Abstract: The battery pack production method of the present disclosure comprises the steps of: arranging a first intervening member between a first member and a second member, wherein the first member is a first battery, the first battery has a first battery exterior body and an electrode body arranged in an interior of the first battery exterior body, the second member is a retention member or a second battery, the second battery has a second battery exterior body and an electrode body arranged in an interior of the second battery exterior body; and while one end of the first intervening member is brought into contact with a pressing member, inserting a tapered member between the first intervening member and the second member from an opposite end side of the first intervening member to press the first intervening member toward the first member and exert a restraining pressure on the first member.

Abstract: A temperature estimating apparatus is provided with: a deriving device configured to derive a slope function, on the basis of a value of a complex impedance of a battery at a predetermined frequency out of values obtained at a plurality of different temperatures and on the basis of a temperature of the battery when the complex impedance is obtained, wherein the slope function indicates a relation between the value of the complex impedance at the predetermined frequency and an inverse of the temperature of the battery; and an estimator configured (i) to measure a value of the complex impedance at the predetermined frequency and (ii) to substitute the measured value of the complex impedance at the predetermined frequency into the slope function, thereby estimating a temperature of the battery when the value of the complex impedance is measured.

Abstract: The disclosure provides a module including a first member that is a battery or a gas tank in which pressure fluctuation happens along one axis direction, a pair of second members, the second members being arranged on end portions of the first member in the one axis direction, respectively, and a binding member binding the first member and the second members while pressurizing them. The binding member is formed as fiber-reinforced plastic (FRP) containing fiber and resin is revolved. The FRP includes a base fiber layer with a fiber direction along a revolution direction, and a reinforcing fiber layer with a fiber direction different from that of the base fiber layer. The reinforcing fiber layer has a non-overlapping portion between both end portions in a revolved state. The non-overlapping portion is positioned in a region facing the first member.