Abstract: An apparatus for estimating a degradation degree of a secondary battery includes a pulse current applying unit that applies a pulse current; a voltage acquiring unit that acquires a charge voltage and a discharge voltage which are produced at the secondary battery by applying the pulse current; a relative value calculation unit that calculates a relative value between the charge voltage and the discharge voltage; a correlation storage unit that stores a correlation between a relative value between the charge voltage and the discharge voltage, and a degradation degree of the secondary battery; and a degradation degree estimation unit that obtains a degradation degree of the secondary battery from the correlation storage unit, based on the relative value calculated by the relative value calculation unit.

Abstract: Apparatuses and methods for controlling driving signals are disclosed herein. Word drivers may be included in a memory device for driving hierarchical structured main word lines and subword lines. The subword lines may be driven by subword drivers that are activated by main word drivers and word drivers. In driving the word lines, driving signals are driven between an active state having an active voltage and an inactive state having an inactive voltage. The active voltage may be a voltage of a power supply and the inactive voltage may be an intermediate voltage between the active voltage and a reference voltage, such as ground. Driving the driving signals in such a manner may reduce current consumption of the memory device in some operations, for example, such as refresh operations.

Abstract: Apparatuses and methods for controlling driving signals are disclosed herein. Word drivers may be included in a memory device for driving hierarchical structured main word lines and subword lines. The subword lines may be driven by subword drivers that are activated by main word drivers and word drivers. In driving the word lines, driving signals are driven between an active state having an active voltage and an inactive state having an inactive voltage. The active voltage may be a voltage of a power supply and the inactive voltage may be an intermediate voltage between the active voltage and a reference voltage, such as ground. Driving the driving signals in such a manner may reduce current consumption of the memory device in some operations, for example, such as refresh operations.

Abstract: An abnormality determination device for a secondary battery includes an internal-resistance calculation unit, a threshold memory unit, a capacity balance comparison unit, and an abnormality determination unit. The internal-resistance calculation unit detects an internal resistance in a negative-electrode reaction resistance dominant region in which a reaction resistance of a negative electrode is dominant in a charge and discharge reaction of the secondary battery. The threshold memory unit stores a capacity balance threshold used as a reference for determining abnormality in a balance between a capacity of a positive electrode and a capacity of the negative electrode in the secondary battery. The capacity balance comparison unit compares the internal resistance calculated by the internal-resistance calculation unit with the capacity balance threshold stored in the threshold memory unit.

Abstract: Apparatuses and methods for maintaining an active state of a word driver signal are described. The word driver may be included in a memory device including a hierarchical structured main word lines and subword lines. The subword lines may be driven by subword drivers that are activated by main word drivers and word drivers. During an operation such as a refresh operation, a driving signal provided by a word driver to a subword driver may be held in an active state while the driving signal provided by a main word driver to the subword driver transitions between active and inactive states. In some examples, the word driver may include a latch for latching an activation signal at an initiation of a refresh operation to maintain a state of the driving signal.

Abstract: Apparatuses and methods for controlling driving signals are disclosed herein. Word drivers may be included in a memory device for driving hierarchical structured main word lines and subword lines. The subword lines may be driven by subword drivers that are activated by main word drivers and word drivers. In driving the word lines, driving signals are driven between an active state having an active voltage and an inactive state having an inactive voltage. The active voltage may be a voltage of a power supply and the inactive voltage may be an intermediate voltage between the active voltage and a reference voltage, such as ground. Driving the driving signals in such a manner may reduce current consumption of the memory device in some operations, for example, such as refresh operations.

Abstract: Apparatuses and methods for maintaining an active state of a word driver signal are described. The word driver may be included in a memory device including a hierarchical structured main word lines and subword lines. The subword lines may be driven by subword drivers that are activated by main word drivers and word drivers. During an operation such as a refresh operation, a driving signal provided by a word driver to a subword driver may be held in an active state while the driving signal provided by a main word driver to the subword driver transitions between active and inactive states. In some examples, the word driver may include a latch for latching an activation signal at an initiation of a refresh operation to maintain a state of the driving signal.

Abstract: Embodiments of the disclosure are drawn to apparatuses and methods for a sequence of refreshing memory mats. During a refresh operation, wordlines of the memory may be refreshed in a sequence. Groups of wordlines may be organized into memory mats. In order to prevent noise, each time a wordline in a memory mat is refreshed, the next wordline to be refreshed may be in a mat which is not physically adjacent to the mat containing the previously refreshed wordline.

Abstract: A power conversion apparatus capable of cheaply securing safety and achieving watertightness. The power conversion apparatus (100) has: a charging device (14) for charging from an external power source (20) to a cell (30); an inverter (13) for converting the current of the cell (30) from direct current to alternating current and supplying the current to a motor (40); and a junction box (15) for relaying an electrical connection. The inverter (13), the charging device (14), and the junction box (15) are contained in a single housing. Also, the charging device (14) and the junction box (15) are electrically connected, and the junction box (15) and the inverter (13) are electrically connected. Also, the junction box (15) and the inverter (13) are connected by a bus bar (16).

Abstract: An apparatus for estimating a degradation degree of a secondary battery includes a pulse current applying unit that applies a pulse current; a voltage acquiring unit that acquires a charge voltage and a discharge voltage which are produced at the secondary battery by applying the pulse current; a relative value calculation unit that calculates a relative value between the charge voltage and the discharge voltage; a correlation storage unit that stores a correlation between a relative value between the charge voltage and the discharge voltage, and a degradation degree of the secondary battery; and a degradation degree estimation unit that obtains a degradation degree of the secondary battery from the correlation storage unit, based on the relative value calculated by the relative value calculation unit.

Abstract: A positive electrode material includes: Li2Ni?M1?M2?Mn?O4-?. ? satisfies a relational expression of 0.50<??1.33. ? satisfies a relational expression of 0.33???1.1. ? satisfies a relational expression of 0???1.00. ? satisfies a relational expression of 0??<0.67. ? satisfies a relational expression of 0???1.00. M1 is at least one type selected from Co and Ga. M2 is at least one type selected from Ge, Sn, and Sb. Li2Ni?M1?M2?Mn?O4-? has a layered structure which includes a Li layer and a Ni layer. A crystal structure of Li2Ni?M1?M2?Mn?O4-? is a superlattice structure.

Abstract: A battery monitoring system includes a data acquiring unit and a failure determining unit. The data acquiring unit acquires a plurality of types of monitoring data to monitor a state of a secondary battery. The failure determining unit determines whether the secondary battery has failed. The failure determining unit performs sparsity regularization using the monitoring data as variables and calculates a partial correlation coefficient matrix of the monitoring data. The failure determining unit calculates, as an abnormality level, an amount of change in a partial correlation coefficient, which is a component of the partial correlation coefficient matrix, between two partial correlation coefficient matrices calculated at different periods. The failure determining unit determines that the secondary battery has failed when the calculated abnormality level exceeds a predetermined threshold.

Abstract: A battery monitoring system monitors states of at least two secondary batteries. In the system, a data acquiring unit acquires a plurality of types of monitoring data to monitor the state of each of the secondary batteries. A failure determining unit determines whether the secondary battery has failed. The failure determining unit performs sparsity regularization using the acquired monitoring data of each of the secondary batteries as variables and calculates a partial correlation coefficient matrix of the monitoring data. The failure determining unit calculates, as an abnormality level, a difference in a partial correlation coefficient, which is a component of the partial correlation coefficient matrix, between two partial correlation coefficient matrices respectively calculated using the monitoring data of the two secondary batteries. The failure determining unit determines that either of the two secondary batteries has failed when the calculated abnormality level exceeds a predetermined threshold.

Abstract: A non-aqueous rechargeable battery has a non-aqueous electrolyte and positive and negative electrodes capable of intercalating and deintercalating lithium ions. The positive electrode contains a lithium transition metal oxide expressed by Li2-xNi?M1?M2y O4-?,where 0.50<?<=1.33, 0<=?<0.67, 0<=?<=1.33, 0<=?<=1.00, M1 is at least one of Co, Al and Ga, and M2 is at least one of Mn, Ge, Sn and Sb, and x reversibly varies within a range of 0<=x<=2 by intercalating and deintercalating lithium ions. A resistance of the positive electrode when SOC is 0% is not less than twice of that when SOC is not less than a predetermined SOC. A capacity of the negative electrode is not less than 1.1 times of that of the positive electrode.

Abstract: A power conversion apparatus capable of cheaply securing safety and achieving watertightness. The power conversion apparatus (100) has: a charging device (14) for charging from an external power source (20) to a cell (30); an inverter (13) for converting the current of the cell (30) from direct current to alternating current and supplying the current to a motor (40); and a junction box (15) for relaying an electrical connection. The inverter (13), the charging device (14), and the junction box (15) are contained in a single housing. Also, the charging device (14) and the junction box (15) are electrically connected, and the junction box (15) and the inverter (13) are electrically connected. Also, the junction box (15) and the inverter (13) are connected by a bus bar (16).

Abstract: A power conversion apparatus capable of cheaply securing safety and achieving watertightness. The power conversion apparatus (100) has: a charging device (14) for charging from an external power source (20) to a cell (30); an inverter (13) for converting the current of the cell (30) from direct current to alternating current and supplying the current to a motor (40); and a junction box (15) for relaying an electrical connection. The inverter (13), the charging device (14), and the junction box (15) are contained in a single housing. Also, the charging device (14) and the junction box (15) are electrically connected, and the junction box (15) and the inverter (13) are electrically connected. Also, the junction box (15) and the inverter (13) are connected by a bus bar (16).

Abstract: A positive electrode material includes: Li2Ni?M1?M2?Mn?O4-?; a layered structure including a Li layer and a Ni layer; and a chemical bond of M2-O. ? satisfies an equation of 0.50<??1.33. ? satisfies an equation of 0??<0.67. ? satisfies an equation of 0.33???1.1. ? satisfies an equation of 0???1.00. ? satisfies an equation of 0???1.00. M1 represents at least one selected from Co and Ga. M2 represents at least one selected from Ge, Sn and Sb.

Abstract: A solid electrolyte material includes: Li2+yGe1?xMxO3. x satisfies an equation of 0?x<0.5. y satisfies an equation of ?0.5<y<0.5. M represents at least one element selected from Mg, Al, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Ga, Zr, Sn, Nb, Sb, Cu, Sc, Ta, and Hf. Ge has a six-coordinate structure, or the solid electrolyte material has a crystal structure attributed to monoclinic, C12/c1.

Abstract: A positive electrode material includes Li2Ni?M1?M2?O4-?, where 0<(?+?)?2; 0??<0.5; 0<??2; 0???1; 1?(?+?+?)?2.1; 0.8<?/(?+?); M1 is Mn; M2 is at least one selected from Ge and Sn; and Ni and M1 has a local structure of six-coordination. The positive electrode material is used for a positive electrode for nonaqueous-electrolyte secondary battery and a nonaqueous-electrolyte secondary battery.

Abstract: A positive electrode material includes: Li2Ni?M1?M2?Mn?O4-? that has a layered structure including a Li layer and a Ni layer, and in which a Ni—O bond length is shorter than that calculated from the Shannon's ionic radii. ? satisfies a relation of 0.50<??1.33, ? satisfies a relation of 0??<0.67, ? satisfies a relation of 0.33???1.1, ? satisfies a relation of 0???1.00, ? satisfies a relation of 0???1.00, M1 represents at least one selected from Co and Ga, M2 represents at least one selected from Ge, Sn and Sb. A positive electrode material may indicate a peak intensity ratio (I003/I104) of 0.9 or more in a measurement of a powder X-ray diffraction indexed with a space group of R3m.