Abstract: A first angle (?1) formed between a second straight line (L2) and a third straight line (L3) is more than 55°. A first length (D1) represents a straight line distance between a first point (A) and a second point (B), and a second length (D2) represents a length of a first electrode core body between the first point (A) and the second point (B). On this occasion, the second length (D2) is 1 time or more and 1.1 times or less as large as the first length (D1).

Abstract: A power supply/demand management device includes: a battery health acquisition controller configured or programmed to acquire a battery health X of the storage battery; a power selling amount management controller configured or programmed to acquire a desired power selling amount and correct desired power selling amount based on the battery health X acquired by the battery health acquisition controller; a power transmission/reception management controller configured or programmed to manage an amount of received/transmitted power between the storage battery and the power transmission/distribution system, based on the corrected power selling amount; and an incentive management controller configured or programmed to calculate an incentive to be provided to the user of the storage battery based on the corrected power selling amount.

Abstract: The present disclosure provides an angular battery with enhanced protection of an electrode body. The present disclosure provides an angular battery including an electrode body and a battery case that accommodates the electrode body. The battery case is configured of a substantially U-shaped case body that has a rectangular bottom surface and a pair of long side surfaces provided integrally with the bottom surface and facing each other, and a substantially U-shaped lid body having an upper lid facing the bottom surface and a pair of short side surfaces provided integrally with the upper lid and facing each other. The electrode body is attached to the lid body. In the angular battery, the case body and the lid are joined to each other to form a state in which the electrode body is accommodated inside the battery case.

Abstract: A battery pack includes battery cells and a spacer arranged between two adjacent battery cells. Each battery cell includes an electrode body and a case. The electrode body includes an upper curved portion, a flat portion, and a lower curved portion. The spacer presses one side wall of the case of one of the adjacent battery cells toward an inner side of the case at a part where the side wall opposes a region from the upper curved portion to the lower curved portion. The spacer forms passages for cooling air between the spacer and the side wall. A first cooling efficiency of the cooling air per unit area at a first opposing portion of the side wall that opposes the upper curved portion is less than a second cooling efficiency per unit area at a second opposing portion of the side wall that opposes the flat portion.

Abstract: A positive electrode active material 1 disclosed herein includes a Ni content lithium complex oxide containing 70 mol % or more of nickel relative to the total of metal elements other than lithium, and a boron element. The Ni content lithium complex oxide is in a form of a secondary particle in which primary particles are aggregated and has a porosity of 2% or more and 10% or less, and inside the secondary particle, a larger space than an average cross-sectional area of the primary particles does not exist. The boron element is contained by 0.5 to 3 mol % when the total of metal elements of the Ni content lithium complex oxide is 100 mol %.

Abstract: A nano projection structure inspection apparatus herein disclosed includes an inspection light irradiation part and a chromameter. The inspection light irradiation part irradiates inspection light to an inspected surface being a surface of a metal. An imaging optical axis of an imaging element of the chromameter is arranged to be tilted to a regular reflection direction of the inspection light caused by the inspected surface. The chromameter makes the imaging element receive diffusion reflection light, among reflection light of the inspection light from the inspected surface, the reflection light containing regular reflection light and the diffusion reflection light, so as to inspect a nanoscale projection structure on the inspected surface.

Abstract: A method for producing an electrode sheet includes a first feeding process, a roll press process, and a second feeding process, which are performed in this order. At least one of a first tension per unit area obtained by dividing a tension applied to the electrode sheet in a longitudinal direction in the first feeding process by a cross-sectional area of the electrode sheet being fed in the first feeding process and a second tension per unit area obtained by dividing a tension applied to the electrode sheet in a longitudinal direction in the second feeding process by a cross-sectional area of the electrode sheet being fed in the second feeding process is 5.0 MPa or less.

Abstract: A busbar disclosed herein includes: a first metallic member including a first plate portion; a second metallic member including a second plate portion; a swaged joint formed by plastically deforming the first plate portion of the first metallic member and the second plate portion of the second metallic member such that the first plate portion and the second plate portion are swaged together; and a metal joint formed by metal-joining the first plate portion of the first metallic member to the second plate portion of the second metallic member.

Abstract: Provided is a method that can produce a resin porous material from a water-insoluble polymer in a small number of steps while suppressing the formation of skin layers. The production method of the resin porous material disclosed herein includes preparing a solution of a water-insoluble polymer in a mixed solvent including a good solvent of the water-insoluble polymer and a first poor solvent of the water-insoluble polymer, and vaporizing and removing the mixed solvent from the solution. The first poor solvent has a higher boiling point than the good solvent. In vaporizing and removing the mixed solvent, the mixed solvent is vaporized and removed under the presence of vapor of a second poor solvent of the water-insoluble polymer to form pores and obtain a porous material.

Abstract: An optical axis adjustment jig includes a main unit portion that is configured to be disposed between a pair of head units, and is fashioned in a flat plate shape. The main unit portion includes a reference portion for adjusting a distance between the head units, and an inclination of an optical axis of each of the head units, and a screen portion for aligning the optical axes of the head units. The reference portion and the screen portion are disposed arrayed in a direction orthogonal to a thickness direction of the main unit portion.

Abstract: A BMU, which is a battery management unit, includes a current measuring unit that measures a current charged to and discharged from a battery; a voltage measuring unit that measures a voltage of the battery during measurement of the current by the current measuring unit; a BPF processing unit that extracts a component in a prescribed frequency band, of the current measured by the current measuring unit; a BPF processing unit that extracts a component in the prescribed frequency band, of the voltage measured by the voltage measuring unit; and an impedance calculating unit that calculates an impedance of the battery using the extracted current component and voltage component.

Abstract: A welding structure of metal members includes a first member having a first opposing surface, a second member having a second opposing surface, and a welding portion fixing the first member and the second member to each other. A gap is formed between the first opposing surface and the second opposing surface. R1>R2 is satisfied where R1 represents a width of the welding portion in the gap and R2 represents a width of the welding portion on the first opposing surface of the first member. T2>T1 is satisfied where T2 represents a thickness of the second member in the portion where the welding portion is formed and T1 represents a thickness of the first member in the portion where the welding portion is formed. 0.8?D1/T1?1.2 is satisfied where D1 represents a depth of the welding portion in the second member from the second opposing surface.

Abstract: A battery pack includes battery cells and a spacer. Each battery cell includes an electrode body and a case accommodating the electrode body in a state sealed by a sealing portion. The battery cells are arranged in an arrangement direction. The spacer is arranged between the case of one of the battery cells and the case of an adjacent battery cell. The battery cells are bound together in a state in which a binding pressure is applied to the battery cells. The electrode body includes a flat portion. The spacer includes a base plate and projections projecting from the base plate toward the case of the adjacent battery cell. The projections include a top projection that presses the case of the adjacent battery cell at a position located upward from an upper edge of the flat portion where the sealing portion is the closest.

Abstract: The present disclosure relates to a negative electrode for a non-aqueous electrolyte secondary battery, the negative electrode comprising an active material layer, wherein the active material layer contains graphite particles, fibrous carbon, silicon-containing particles, and a binder, a BET specific surface area of the graphite particles is 3.5 m2/g or less, the fibrous carbon includes a carbon nanotube, each of the silicon-containing particles includes a domain composed of carbon and a domain composed of silicon and having a size of 50 nm or less, and an oxygen content ratio in each of the silicon-containing particles is 7 wt % or less. According to the present disclosure, a negative electrode and a non-aqueous electrolyte secondary battery are provided to suppress decrease in initial capacity and cycling performance.

Abstract: To provide a rechargeable battery that limits damage to a separator, a positive connector is configured to be bent at an acute angle in a thickness-wise direction in a bending region, which is defined between a first position and a second position, on a boundary position between a flat surface region and a second position in a longitudinal direction. The first position is a position at which a second distal end of a negative plate is disposed. The second position is a position separated from a third position, at which a first distal end of a separator is disposed, by a thickness of a positive mixture layer in a second width-wise direction.

Abstract: In a power storage device, a plurality of electrode tabs includes a bent portion bent in a tab thickness direction. At least one of the electrode tabs constituting an electrode tab group has a shape that a tab width of a connection-side bent portion of bent portions, which is located on a side close to a tab connection portion, is smaller than a tab width of a tab connection portion including a bonded portion located on an inside in a tab width direction, the bonded portion being bonded to an electrode terminal directly or through another or other electrode tabs.

Abstract: The present disclosure relates to a positive electrode active material comprising a first particle group and a second particle group, wherein the first particle group consists of a plurality of first particles, each first particle includes one to ten single particles, the second particle group consists of a plurality of second particles, each second particle includes an aggregation-based particle, and each aggregation-based particle is formed of 50 or more primary particles aggregated to each other.

Abstract: A method of manufacturing a power storage module includes: stacking a plurality of power storage cells along a first direction; compressing the plurality of power storage cells along the first direction; aligning the plurality of power storage cells in a second direction orthogonal to the first direction after relieving pressing force of the compressing; compressing the plurality of power storage cells along the first direction after aligning the plurality of power storage cells in the second direction; disposing a restraint portion on both sides in the first direction with respect to the plurality of power storage cells under application of pressing force of the compressing; and restraining the plurality of power storage cells by the restraint portion along the first direction by relieving, after disposing the restraint portion, the pressing force of the compressing.

Abstract: In a method for adjusting a device voltage of a power storage device, when this device is represented as an equivalent circuit in which a parallel circuit of a capacitive device component and a short-circuit resistance indicating a magnitude of self-discharge of the device component is connected in series with a DC resistance of the power storage device, the power storage device has a property that, while the power storage device is pressed under a load and the device component is charged to generate a component voltage, the component voltage lowers when the load is reduced, but rises when the load is increased. The method includes a) component-voltage changing by load change of changing the load applied to the power storage device under a first load, generating a first component voltage in the device component, from the first load to change the component voltage from the first component voltage.

Abstract: A nonaqueous electrolyte secondary battery includes an electrode assembly and an electrolyte solution. The electrode assembly is impregnated with at least part of the electrolyte solution. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The separator separates the positive electrode and the negative electrode from each other. The negative electrode includes a negative electrode active material. The negative electrode active material includes graphite. The following relation of a formula (1) is satisfied: “1.60?NPR/AAR?2.55”. “NPR” represents a ratio of a negative electrode charging capacity to a positive electrode charging capacity. “AAR” represents a ratio of an effective discharging capacity of the negative electrode to a total of a capacity corresponding to an amount of inactive lithium adhered to the negative electrode and the effective discharging capacity of the negative electrode.