Abstract: In an inspection apparatus for an assembled battery having a plurality of energy storage devices connected in series, based on a voltage difference between a first energy storage device with the first-lowest voltage and a second energy storage device with the second-lowest voltage during charge or discharge among the plurality of energy storage devices, an abnormality of the first energy storage device is detected.

Abstract: An estimation device includes: a deriving unit (31) that derives a derivation history based on a current and a voltage of a lead-acid battery and a temperature of the lead-acid battery; a specifying unit 31 that specifies at least two degrees of a first degree of softening of a positive electrode material, a second degree of corrosion of a positive electrode grid, a third degree of negative electrode sulfation, and a fourth degree of shrinkage of a negative electrode material based on the derived derivation history and at least two relationships selected from the group consisting of: a first relationship between a first history based on the current, the voltage, and the temperature of the lead-acid battery, and the first degree; a second relationship between a second history and the second degree; a third relationship between a third history and the third degree; and a fourth relationship between a fourth history and the fourth degree; and an estimating unit (31) that estimates a degree of deterioration of th

Abstract: An energy storage apparatus includes a pair of end members positioned in first direction and opposed to each other, and energy storage devices arrayed in the first direction between the pair of end members. Each of the energy storage devices includes an electrode assembly and a case accommodating the electrode assembly. The case has a pair of side wall portions opposed to each other. The energy storage devices include an energy storage device positioned adjacent to one of the end members such that a wall thickness of one side wall portion adjacent to the one of the end members is larger than a wall thickness of the other side wall portion in the energy storage device.

Abstract: An energy storage apparatus includes external terminals, an energy storage device, a switch located in a current path from the energy storage device to the external terminal, a measurement unit that measures a current and a voltage of the energy storage device, and a management unit. The management unit cuts off discharge to an outside through the external terminal by controlling the switch when the voltage of the energy storage device falls below a threshold voltage equal to or higher than a minimum operating voltage of the measurement unit, and the management unit estimates a capacity of the energy storage device after an arbitrary time point t1 in a first period in which the voltage of the energy storage device decreases from the threshold voltage to the minimum operating voltage of the measurement unit based on an elapsed time from the arbitrary time point.

Abstract: A data processing device that processes measurement data for power storage elements, said device comprising: a storage unit that stores a determination model trained so as to output a score corresponding to whether, upon the input of measurement data measured for each of the power storage elements or for each power storage element group formed by grouping a plurality of the power storage elements, measurement data from a non-conforming power storage element is included in said measurement data; and an identification unit that inputs acquired measurement data into the determination model, and identifies measurement data from a non-conforming power storage element on the basis of the outputted score.

Abstract: An energy storage device includes a case, an electrode assembly housed in the case, a current collector arranged between the electrode assembly and a lid of the case in Z-axis direction, and an electrode terminal fixed to the lid. The current collector has a terminal connecting portion connected to the electrode terminal and an electrode connecting portion connected to the electrode assembly. The terminal connecting portion and the electrode connecting portion are arranged side by side in X-axis direction intersecting with the Z-axis direction, and a thickness of the electrode connecting portion is smaller than a thickness of the terminal connecting portion.

Abstract: An estimation device 4 is provided with: an acquisition unit 41 for acquiring time-series data about an SOC of a power storage element; a specification unit 41 for specifying a fluctuation range of the SOC in the time-series data and an SOC representative value representing an SOC region in the fluctuation range; and an estimation unit 41 for estimating a shape change of the power storage element on the basis of the specified fluctuation range and the specified representative value.

Abstract: A voltage measurement circuit includes: voltage dividing circuits that divide voltages of energy storage devices, in respective stages connected in series; switches that cut off the currents of the voltage dividing circuits in the respective stages, and a measurement unit that measures the voltages of the energy storage devices in the respective stages based on outputs of the voltage dividing circuits in the respective stages. The voltage dividing circuits in the respective stages each have a first resistor connected to the ground and a second resistor connected to a positive electrode of the corresponding energy storage device. The switch in a predetermined-number stage among the switches in the respective stages is an N-channel field-effect transistor (FET) having a source connected to the first resistor and a drain connected to the second resistor, and the source of the FET is a voltage output terminal with respect to the measurement unit.

Abstract: In an embodiment, a plurality of energy storage devices arranged in a first direction, an adjacent member sandwiched between the energy storage devices, a holding member that holds the energy storage devices and the adjacent member, an insulating member sandwiched between the energy storage devices and the holding member, a bus bar, and a bus bar holding member that holds the bus bar and is arranged along the plurality of energy storage devices are provided, in which the bus bar holding member has an elastic deformation portion, and the elastic deformation portion abuts on one of the adjacent member and the insulating member, and presses the bus bar holding member against the other of the adjacent member and the insulating member.

Abstract: A vent plug (18) includes a head portion (35), a cylindrical portion (36), and a filter (34). The cylindrical portion (36) includes a cylinder portion (40), a screw thread portion (42), a slit (45), and a through hole (43). The filter (34) is disposed at a position where the through hole (43) is provided in a central axis (L) direction. The screw thread portion (42) intersects the slit (45) only at a first-peripheral screw thread portion.

Abstract: A management apparatus for an energy storage device, wherein after the start of counting an elapsed time since a current of the energy storage device became equal to or smaller than a first threshold, when a predetermined condition in which the voltage of the energy storage device is possibly not stable is satisfied at a time point where the count reaches a stabilization time (predetermined value), the count of the elapsed time is changed.

Abstract: Provided are an information processing device, an information processing system, an information processing method, and a computer program capable of visually and easily grasping a state of an energy storage device.

Abstract: An energy storage apparatus includes an energy storage device and a spacer disposed adjacent to the energy storage device in a first direction, in which the spacer is disposed inward of the energy storage device in a second direction orthogonal to the first direction when viewed from the first direction, and has a concave-convex portion having at least one of a concave portion and a convex portion formed at an end portion in the second direction, and the concave-convex portion is disposed separated from the energy storage device.

Abstract: This maintenance assistance method detects a sign of abnormality of a power storage element on the basis of measurement data pertaining to the power storage element, which is sequentially stored in a storage device, determines at least any among a work period of a maintenance work corresponding to the detected sign of abnormality, the number of workers, and an article including a replacement or a tool required for the maintenance work, and notifies the workers of the maintenance work of execution of the maintenance work corresponding to the determined item.

Abstract: The energy storage apparatus includes an energy storage device, a circuit breaker connected in series with the energy storage device, a reception unit that receives a discharge instruction to discharge remaining electric power of the energy storage device, and a management unit. The management unit executes protection processing of opening, when a state of charge of the energy storage device drops below a predetermined threshold value, the circuit breaker to protect the energy storage device from overdischarging, and protection release processing of releasing protection of the energy storage device when the discharge instruction is received by the reception unit.

Abstract: An energy storage device includes: an electrode assembly formed by winding a plurality of plates; and a case housing the electrode assembly. The electrode assembly includes: a body including a flat portion and a pair of curved portions sandwiching the flat portion; and a plurality of tabs, each tab formed by stacking a plurality of pieces of plates with the same polarity out of the plurality of plates, and protrude as a pair from each of both end faces of the body in a winding-axis direction. At least one tab of the plurality of tabs includes a bent portion continuous with the curved portion, and a pair of extended portions extended from the bent portion and continuous with the flat portion.

Abstract: An energy storage device includes an outer case including a lid plate on which an external terminal is mounted, a plate including a tab and housed in the outer case, a conductive shaft portion penetrating the lid plate and including one end thereof connected to the external terminal, and a conductive plate portion housed in the outer case, and including a first surface to which an other end of the conductive shaft portion is connected and a second surface to which the tab is connected. A size of the conductive plate portion is set larger than a size of the external terminal in a planar direction of the lid plate.

Abstract: A power control apparatus for a distributed power supply interconnected with a power system includes: a conversion circuit that performs reverse conversion of converting power supplied from the distributed power supply from direct current to alternating current and outputting the converted power; and a control device that controls the conversion circuit. The control device changes a target value of received power at a power reception point of the power system on the basis of a predicted value of a power generation amount of the distributed power supply and a predicted value of power consumption of a demand facility, and controls an output of the conversion circuit such that the received power at the power reception point becomes a target value.

Abstract: A diagnostic device and method diagnoses damage to a breaker that interrupts a current of an energy storage device. The damage to the breaker is diagnosed on the basis of a short-circuit current at a time of an external short circuit. The damage to the breaker can also be diagnosed on a basis of a short-circuit current during a first time from detection to interruption of a short circuit, and a short-circuit current during a second time from the interruption to convergence of the short-circuit current. An energy storage apparatus can include the diagnostic device.

Abstract: A detector 100, which detects an abnormality of a communication line L1 connecting a moving body controller 30 and an energy storage apparatus 50 that are mounted on a moving body 10, detects occurrence or non-occurrence of the abnormality of the communication line L1 based on at least two pieces of information from: a moving body state signal Sv transmitted from the moving body controller 30 to the energy storage apparatus 50 and stored in the energy storage apparatus 50; a communication state between the moving body controller 30 and the energy storage apparatus 50; and information on the charge and discharge of the energy storage apparatus 50.