Abstract: A secondary battery having an electrode assembly and an electrolyte in an exterior body. The electrode assembly includes a step structure including a first region and a second region lower than and adjacent to the first region. The electrode assembly includes at least one of a positive electrode side connecting portion that connects each of positive electrode side connecting tabs of all positive electrodes in the first region and a negative electrode side connecting portion that connects each of the negative electrode side connecting tabs of all negative electrodes in the first region. At least one of a positive electrode side extended tab of at least one of the positive electrodes and a negative electrode side extended tab of at least one of the negative electrodes in the second region are configured to be electrically connected to an external terminal.

Abstract: A laminated secondary battery that houses an electrode assembly and an electrolyte in an exterior body. In the electrode assembly, a positive and negative electrode laminate body including an electrode current collector and electrode multi-units having two or more electrode material layers formed on the electrode current collector with non-forming regions interposed between them is bent on the non-forming regions.

Abstract: A secondary battery including an electrode assembly having a positive electrode, a negative electrode, and a separator arranged between the positive electrode and the negative electrode, an electrolyte, and an exterior body housing the electrode assembly and the electrolyte. The exterior body has at least two step portions adjacent to each other and having top surfaces with different heights, the at least two step portions including a low step portion and a high step portion. A stepped surface is formed between the top surface of the low step portion and the top surface of the high step portion, and at least part of a board is arrangeable on the top surface of the low step portion.

Abstract: A secondary battery having an electrode assembly including a positive electrode, a negative electrode, and a separator arranged between the positive electrode and the negative electrode; an electrolyte; and an exterior body housing the electrode assembly and the electrolyte. The exterior body includes at least two step portions adjacent to each other and having top surfaces with different heights, and a stepped surface is formed between the top surface of the low step portion having a relatively low height and the top surface of the high step portion adjacent to the low step portion and having a relatively high height. The external terminal of the secondary battery is exposed on the end side surface of the step portion whose top surface has a height less than the highest height (Hmax) among at least two step portions.

Abstract: A secondary battery including an electrode assembly including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, and an electrolyte encapsulated in an exterior body. The exterior body has a shape with a cutout portion in planar view thereof, and the exterior body has a seal portion along a peripheral edge portion thereof. The seal portion is folded in a thickness direction of the secondary battery to form a folded seal portion having an end on a cutout portion side to form a stopper portion for a board disposed in the cutout portion.

Abstract: A method for manufacturing a secondary battery in which the preparation of at least one of a positive electrode and to negative electrode includes forming an electrode material layer on a metal sheet material to serve as an electrode current collector, thereby providing an electrode precursor, and cutting out electrodes from the electrode precursor to form a plurality of electrodes. Each of the electrodes has a non-rectangular shape.

Abstract: An electric storage device comprises a rectangular parallelepiped case including first and second opposed main walls which are separated in a thickness direction of the case. An integrated electrode body is located in the case between the first and second main walls. The integrated electrode body includes a positive electrode, a negative electrode, and a separator disposed between the positive and the negative electrodes. The electrode body has a bending strength which is higher than bending strength of the first main wall which is physically coupled to the electrode body. An electrolyte is located in the case.

Abstract: An electrical storage device includes a case having first and second opposed main walls which face one another and at least one side wall coupled the first and second main walls. The case having a generally rectangular shape with outer corners and includes a cutout part having inner corners. An integrated electrode body is located in the case and is joined to the first main wall. The integrated body includes a first electrode, a second electrode, and a separator disposed between the first and second electrodes. The electrode body has a bending strength which is higher than a bending strength of the first main wall. An electrolyte fills the case.

Abstract: An electric storage device includes a case having a substantially rectangular shape including a cutout part. An electrode body is disposed in the case and includes a first electrode, a second electrode, and a separator disposed between the first and second electrodes. An electrolyte is located in the case and at least partially impregnating the electrode body. A first electrode terminal is located on a first part of a side surface of the case and is electrically connected to the first electrode by a first connection member which has elasticity in a direction extending from the first electrode terminal to the first electrode. A second electrode terminal is located on a second part of the side surface of the case and is electrically connected to the second electrode by a second elastic connection member which has elasticity in a direction extending from the second electrode terminal to the second electrode.

Abstract: A secondary battery that an electrode assembly formed by stacking electrode-constituting layers each including a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode. The electrode assembly has at least two sub-electrode bodies respectively formed of wound portions, non-wound portions, or a wound portion and a non-wound portion. The sub-electrode bodies are joined by a mutually shared electrode-constituting layer, and the shared electrode-constituting layer is a bent portion.

Abstract: An electric storage device that includes a first electrode body and a second electrode body. The first electrode body includes a first wound body part and an extension part. The first wound body part includes a laminated body having a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The second electrode body is on the extension part. The length of the second electrode body is different from that of the first wound body part of the first electrode body in a direction in which a central axis of the first wound body part extends.

Abstract: A secondary battery which includes an electrode assembly having a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, and an electrolyte, the electrode assembly and the electrolyte being accommodated in an exterior body. The positive electrode and the negative electrode have curved surfaces adjacent to each other on parts of peripheral surfaces in a planar view. The negative electrode is disposed so as to protrude from the positive electrode so that a gap G is present between the positive electrode and the negative electrode in the planar view. A value (|R1-R2|/G) obtained by dividing an absolute value 1|R1-R2| of a difference between a curvature radius R1 of the curved surface of the negative electrode and a curvature radius R2 of the curved surface of the positive electrode by the gap G is 0.50 to 1.10.

Abstract: A power storage device that includes a first wound body which is formed by winding part of a stacked body including a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode; and a second wound body which is formed by winding at least part of a portion of the stacked body which does not constitute the first wound body, and at least one of a length in a winding axis direction and a position in the winding axis direction of the second wound body is different from the first wound body.

Abstract: A power storage system that includes a first power storage pack and a second power storage pack. The second power storage pack is connected in parallel to the first power storage pack. The charge/discharge curve for the second power storage pack has a step passing through the open-circuit voltage of the first power storage pack at a SOC of 50%. The average discharge voltage on the lower SOC side of the start point of the step of the charge/discharge curve for the second power storage pack is ?25% or more of the open-circuit voltage of the first power storage pack at a SOC of 50%. The average charge voltage on the higher SOC side of the end point of the step of the charge/discharge curve for the second power storage pack is +25% or less of the open-circuit voltage of the first power storage pack at a SOC of 50%.

Abstract: A power supplying system that includes a power supplying mechanism, an electric load, a power line, and a storage pack. The power supplying mechanism supplies a DC power. The electric load is connected to the power supplying mechanism by the power line. The storage pack is connected to the power line. The charging/discharging curve of the storage pack has a step difference that passes through the rated voltage of the power supplying mechanism. An average discharging voltage on a lower-SOC side of the start point of the step difference is ?20% or more of the rated voltage. An average charging voltage on a higher-SOC side of the end point of the step difference is +20% or less of the rated voltage.

Abstract: A power storage pack having a charge/discharge curve with a step passing through the range of (12.5×n) V to (12.8×n) V, where ii is a natural number of 1 to 125. The average discharge voltage on the lower SOC side of the start point of the step of the charge/discharge curve for the power storage pack fails within the range of (9.0×n) V to (12.5×n) V. The average charge voltage on the higher SOC side of the end point of the step of the charge/discharge curve for the power storage pack falls within the range of (12.8×n) V to (14.8×n) V.

Abstract: A method of manufacturing an electrical storage device that includes an electrode including a cutout part in which a terminal unit including no active material layer is provided. The electrical storage device is manufactured by forming an active material layer having a partially cut-out rectangular shape on a surface of a collector base material to form an electrode base material. The electrode base material is cut to form an electrode that includes a terminal unit formed from part of the electrode base material in which the active material layer is not provided.

Abstract: A method comprising: comparing each value of measured signals with a plurality of model tooth position measurement data groups, and storing the measured signal values and an indication value at the time when a fluctuation of the indication value which indicates a distance from a root apex position to a distal end of an electrode for position detection shows an apex in a convex shape, the indication value being indicated by a model tooth position measurement data group in a predetermined relationship; and comparing second-time measured signal values and an indication value with the stored first-time measured signal values and the stored indication value, respectively, if at least two of them correspond or fall within a predetermined error range, stopping the electrode and measuring a position of the distal end of the electrode.

Abstract: A dielectric ceramic that can be sintered at a sufficiently low temperature and has a desired specific resistance at a high temperature, and a multilayer ceramic electronic component (a multilayer ceramic capacitor and the like) using the dielectric ceramic are provided. The multilayer ceramic capacitor includes a multilayer body having a plurality of laminated dielectric ceramic layers, and a plurality of internal electrodes at interfaces between the dielectric ceramic layers; and external electrodes 8 and 9 on outer surfaces of the multilayer body. The composition of the multilayer body includes a perovskite-type compound containing Ba and Ti (where a part of Ba may be substituted by Ca, and a part of Ti may be substituted by Zr) as a primary ingredient, and further includes M (where M is at least one of Cu, Zn, Li, K, and Na) and Bi. The total content of M and Bi is equal to or greater than 3 molar parts when the total content of Ti and Zr is 100 molar parts.

Abstract: A laminated ceramic electronic component has a variety of superior mechanical properties and electrical properties, including a high degree of freedom in the design for ceramic materials, and can be manufactured at low cost and with a low percentage of defective products. The laminated ceramic electronic component includes a laminate including a plurality of stacked ceramic layers and a plurality of internal electrodes containing Al as a main constituent, the internal electrodes being arranged along specific interfaces between the ceramic layers, and external electrodes located on an outer surface of the laminate, wherein surface layer sections of the internal electrodes include an Al2O3 layer.