Abstract: A power supply device includes a measurement unit that measures at least one of a voltage and a current of a lithium ion battery, a peak detection unit that detects at least one of a maximum value of the current and a minimum value of the voltage at regular time intervals using at least one of the voltage and the current measured by the measurement unit, and a determination unit that determines a failure of the lithium ion battery based on at least one of the maximum value of the current and the minimum value of the voltage detected at regular time intervals by the peak detection unit.

Abstract: A power supply device is provided and includes a secondary battery, an electric circuit, and a measurer. The electric circuit performs charging or discharging of the secondary battery. The measurer measures a voltage and a current of the secondary battery. The power supply device further includes a calculator and a deriver. The calculator performs calculation of multiple degradation parameters of the secondary battery based on measurement values obtained by the measurer. The deriver derives a secondary use destination of the secondary battery based on the multiple degradation parameters obtained by the calculation performed by the calculator and respective degradation rates of the multiple degradation parameters set for each of secondary use destination candidates.

Abstract: An electrolytic solution for a secondary battery includes a lithium salt, a sulfonyl compound, and a fluorinated ether compound. The sulfonyl compound includes two or more selected from cyclic compounds and chain compounds. The sulfonyl compound includes at least one of the cyclic compounds. Each of the cyclic compounds is represented by Formula (1). Each of the chain compounds is represented by Formula (2). The fluorinated ether compound is represented by Formula (3). A concentration of the lithium salt is higher than or equal to 1.159 mol/L and lower than or equal to 3.592 moles per liter. A ratio of a number of moles of the sulfonyl compound to a number of moles of the lithium salt is greater than or equal to 2 and less than or equal to 4.

Abstract: Provided is a battery module. The battery module includes a battery pack including cells connected in series with an amount of s and cells connected in parallel with an amount of p (s is an integer of 1 or more and p is an integer of 1 or more), and a bidirectional DC/DC converter. The converter is configured to generate a voltage nV (n is ?1 or 2) with respect to a voltage V of the battery pack.

Abstract: Disclosed herein is a solid-state battery includes a battery element including alternating positive electrode layers and negative electrode layers each separated by a respective solid electrolyte layer interposed in between; a positive electrode terminal that is attached to the battery element to be electrically connected to the positive electrode layers and electrically separated from the negative electrode layers; a negative electrode terminal that is attached to the battery element to be electrically connected to the negative electrode layers and electrically separated from the positive electrode layers; an insulating coating that covers the battery element, wherein a respective portion of each of the positive electrode terminal and the negative electrode terminal lead out of the covered battery element; and a heat receiving member that is attached to the insulating coating so as to be electrically separated from both the positive electrode terminal and the negative electrode terminal.

Abstract: The battery control device includes: a charge/discharge controller configured to charge or discharge the secondary battery during diagnosis; an open circuit voltage curve acquisition device configured to acquire an open circuit voltage by charging or discharging the secondary battery; and an arithmetic processor configured to estimate a potential of the positive electrode and a potential of the negative electrode from an open circuit voltage curve. The battery control device controls the charge cut-off voltage and the discharge cut-off voltage such that an estimated positive potential does not exceed an upper limit and a lower limit of voltage that are preset.

Abstract: An abnormality detection device is provided and includes a voltage holder, a feature calculator, a data set holder, and a degree-of-abnormality calculator. The voltage holder holds a voltage value of at least one of a maximum value or a minimum value, of a measured voltage, in every fixed time period. The feature calculator calculates a feature that has sensitivity to a voltage spike waveform by processing the voltage value held in the voltage holder. The data set holder holds a data set obtained from a normal secondary battery. The degree-of-abnormality calculator calculates, based on the data set read from the data set holder, a degree of abnormality of the feature calculated by the feature calculator.

Abstract: A power supply control apparatus according to an embodiment of the present technology includes a controller and sensors. The controller controls discharging of secondary battery units coupled in parallel to each other. The sensors are assigned to the secondary batteries on a one-to-one basis. The sensors each detect a current flowing through a current path of corresponding one of the secondary batteries or a physical quantity having a predetermined correlation with the current. The controller switches coupling between a first secondary battery and each of one or more second secondary batteries from parallel coupling to series coupling by controlling a switching unit based on a detection result obtained from each of the sensors. The first secondary battery is any one of the secondary batteries. The one or more second secondary batteries are one or more of the secondary batteries other than the first secondary battery.

Abstract: A power supply apparatus according to an embodiment of the present technology includes secondary battery units and a controller. The secondary battery units are coupled in parallel to each other. The controller controls discharging of the secondary battery units. The secondary battery units each include secondary batteries and a switching unit. The switching unit switches coupling of the secondary batteries. The controller switches coupling between a first secondary battery and each of one or more second secondary batteries from parallel coupling to series coupling by controlling the switching unit. The first secondary battery is any one of the secondary batteries. The one or more second secondary batteries are one or more of the secondary batteries other than the first secondary battery.

Abstract: A current blocking element assembly is provided and includes first and second current blocking elements, first current blocking element including: first-A electrode layer configured to hold ions; first ion conductive layer configured to conduct ions and does not have electronic conductivity; and second-A electrode layer configured to hold ions, first-A electrode layer, first ion conductive layer, and second-A electrode layer laminated in order, second current blocking element including: first-B electrode layer configured to hold ions; second ion conductive layer configured to conduct ions and does not have electronic conductivity; and second-B electrode layer configured to hold ions, first-B electrode layer, second ion conductive layer, and second-B electrode layer laminated in order, wherein the second-A electrode layer and the second-B electrode layer are electrically connected.

Abstract: A power supply device includes a measurement unit that measures at least one of a voltage and a current of a lithium ion battery, a peak detection unit that detects at least one of a maximum value of the current and a minimum value of the voltage at regular time intervals using at least one of the voltage and the current measured by the measurement unit, and a determination unit that determines a failure of the lithium ion battery based on at least one of the maximum value of the current and the minimum value of the voltage detected at regular time intervals by the peak detection unit.

Abstract: A charging device for charging a lithium-ion secondary battery based on at least a constant voltage method is provided. In the charging device, before starting charging with a constant voltage or while performing charging with a constant voltage, a first current pulse having a peak current value i1 larger than a charge current value i0 is applied at least once.

Abstract: Provided is a battery module. The battery module includes a battery pack including cells connected in series with an amount of s and cells connected in parallel with an amount of p (s is an integer of 1 or more and p is an integer of 1 or more), and a bidirectional DC/DC converter. The converter is configured to generate a voltage nV (n is ?1 or 2) with respect to a voltage V of the battery pack.

Abstract: An energy storage apparatus includes a plurality of secondary batteries each including a negative electrode including crystalline carbon; and a charge/discharge control unit that controls charge/discharge of the plurality of secondary batteries so that a state of charge does not fall within a range of 50% or more and 70% or less.

Abstract: A current blocking element assembly is provided and includes first and second current blocking elements, first current blocking element including: first-A electrode layer configured to hold ions; first ion conductive layer configured to conduct ions and does not have electronic conductivity; and second-A electrode layer configured to hold ions, first-A electrode layer, first ion conductive layer, and second-A electrode layer laminated in order, second current blocking element including: first-B electrode layer configured to hold ions; second ion conductive layer configured to conduct ions and does not have electronic conductivity; and second-B electrode layer configured to hold ions, first-B electrode layer, second ion conductive layer, and second-B electrode layer laminated in order, wherein the second-A electrode layer and the second-B electrode layer are electrically connected.

Abstract: Provided is a battery pack charge/discharge control device in which two or more secondary battery units are connected in parallel as a battery pack. The battery pack charge/discharge control device includes an output power maximization circuit configured to maximize an output power based on an input power, and a voltage adjustment converter configured to adjust an output voltage from the output power maximization circuit, and an output power of a secondary battery unit is maximized when the secondary battery unit is in a short circuit state.

Abstract: A current blocking element is provided. The current blocking element includes a first electrode layer, an ion conductive layer, and a second electrode layer, which are laminated in this order, wherein the first electrode layer is configured to hold ions; the ion conductive layer has ionic conductivity and does not have electronic conductivity; and the second electrode layer is configured to hold ions. Ions held in the first electrode layer are moved to the second electrode layer when current is configured to flow between the first electrode layer and the second electrode layer. Current flow between the first electrode layer and the second electrode layer is blocked when ions held in one of the first and second electrode layers are depleted saturated.

Abstract: Provided is a charging control device including a current detector, an abnormal current determination circuit, and a charging stop circuit. The current detector is configured to detect a charging current, the abnormal current determination circuit is configured to determine whether the charging current is attenuated and/or increased in a constant voltage charging region, and to determine whether a value of the charging current per unit time is increased, and the charging stop circuit is configured to stop a constant voltage charging when the value of the charging current per unit time is increased.

Abstract: Disclosed herein is a solid-state battery includes a battery element including alternating positive electrode layers and negative electrode layers each separated by a respective solid electrolyte layer interposed in between; a positive electrode terminal that is attached to the battery element to be electrically connected to the positive electrode layers and electrically separated from the negative electrode layers; a negative electrode terminal that is attached to the battery element to be electrically connected to the negative electrode layers and electrically separated from the positive electrode layers; an insulating coating that covers the battery element, wherein a respective portion of each of the positive electrode terminal and the negative electrode terminal lead out of the covered battery element; and a heat receiving member that is attached to the insulating coating so as to be electrically separated from both the positive electrode terminal and the negative electrode terminal.

Abstract: The battery control device includes: a charge/discharge controller configured to charge or discharge the secondary battery during diagnosis; an open circuit voltage curve acquisition device configured to acquire an open circuit voltage by charging or discharging the secondary battery; and an arithmetic processor configured to estimate a potential of the positive electrode and a potential of the negative electrode from an open circuit voltage curve. The battery control device controls the charge cut-off voltage and the discharge cut-off voltage such that an estimated positive potential does not exceed an upper limit and a lower limit of voltage that are preset.