Abstract: The power conditioner determines possible total power and working individual power to be in a range that possible individual power of each of the power supply units is not exceeded. The possible total power is determined from the possible individual power, of each of the power supply units, determined based on the battery information detected by each of the unit controllers, collected by a master controller from each of the unit controllers. The working individual power is determined based on a power deviation indicating a difference of charging and discharging power between the power supply units. The power conditioner causes charging and discharging of each of the power supply units within the calculated working individual power.

Abstract: An embodiment of the present invention provides a non-aqueous electrolyte secondary battery wherein a separator has a porous base material and a heat-resistant layer including a filler and a binding agent. The heat-resistant layer includes a first heat-resistant layer formed on a first surface of the base material facing a positive electrode and a second heat-resistant layer formed on a second surface of the base material facing a negative electrode. The first heat-resistant material is formed as a sheet on the first surface of the base material and the second heat-resistant layer is formed as dots on the second surface of the base material. The average value of the intervals between the plurality of dots constituting the second heat-resistant layer is 30-100 ?m.

Abstract: A positive electrode for a non-aqueous electrolyte secondary battery comprises a positive electrode mixture layer includes a positive electrode active substance. The quantity of dibutyl phthalate oil absorbed by the positive electrode active substance included in a lower-half region of the positive electrode mixture layer, when the positive electrode mixture layer is divided in the thickness direction into two equal parts, is less than the quantity of dibutyl phthalate oil absorbed by the positive electrode active substance included in an upper-half region; the quantity of dibutyl phthalate oil absorbed by the positive electrode active substance included in the lower-half region is at least 11 mL/100 g and no more than 19 mL/100 g; and the quantity of dibutyl phthalate oil absorbed by the positive electrode active substance included in the upper-half region is at least 15 mL/100 g and no more than 23 mL/100 g.

Abstract: A cell module includes a plurality of cylindrical batteries and a holder composed by arranging each of cylindrical batteries in a parallel posture. The holder includes: a holder body having holding spaces for arranging cylindrical batteries at fixed positions; and a sub holder stacked on the holder body. The holder body has stopper portions deformed toward surfaces of cylindrical batteries arranged in holding spaces. The sub holder has push rods that push out stopper portions to cylindrical batteries in a state of being coupled to the holder body. In a state in which the sub holder is coupled to the holder body, in the cell module, the push rods thrust stopper portions against cylindrical batteries, and press the surfaces of cylindrical batteries arranged in holding spaces.

Abstract: The present invention provides a cylindrical battery in which the opening end of an outer can has an external terminal of a different polarity from a sealing body and easily connectable to an external lead. A cylindrical battery that is one embodiment described in the present disclosure comprises: an electrode body that includes a positive electrode and a negative electrode; a bottomed cylindrical outer can that houses the electrode body and is connected to one of the positive electrode and the negative electrode; and a sealing body that is connected to the other of the positive electrode and the negative electrode. The outer can has a groove, and an opening end that extends radially outward. The sealing body is fixed by crimping between the groove and a pressing member with a gasket interposed therebetween, said pressing member being joined to the opening end.

Abstract: A coating die includes: a first body; a second body; a discharge port; an intermediate member; a first shim to define a first flow passage; a second shim to define a second flow passage; and a confluence passage in which the first flow passage and the second flow passage join together and that communicates with the discharge port. The first shim includes a pair of first arms, and the second shim includes a pair of second arms. Each first arm includes a first female portion and a first male portion. Each second arm includes a second female portion and a second male portion. The first female portion and the second male portion are engaged with each other, and the first male portion and the second female portion are engaged with each other.

Abstract: The present disclosure aims to provide a nonaqueous electrolyte secondary battery having excellent discharge load characteristics and excellent long-term cycle characteristics. A nonaqueous electrolyte secondary battery which is one example of an embodiment of the present disclosure includes a positive electrode, a negative electrode (30), separators, and a nonaqueous electrolyte. The negative electrode (30) includes a negative electrode collector (31) and a negative electrode mixture layer (32) formed on the negative electrode collector (31). The negative electrode mixture layer (32) includes a first mixture layer primarily composed of a carbon-coated graphite (35) and a second mixture layer (34) primarily composed of a graphite (36), the first mixture layer (33) is disposed at a surface side of the negative electrode mixture layer (32), and the second mixture layer (34) is disposed at a side of the negative electrode collector (31).

Abstract: A nonaqueous electrolyte secondary battery representing an embodiment of a sealed battery of the present invention includes a bottomed cylindrical exterior case, a sealing member, a cylindrical wound electrode assembly and an electrolyte. An open end of the exterior case is crimped together with the sealing member via an insulating gasket so as to form a seal. The sealing member includes a lid having a thin and fragile portion, an insulating ring, and a terminal plate having a thin and fragile portion. The terminal plate is electrically connected to a positive electrode current collector leading out from the cylindrical wound electrode assembly. The lid and the terminal plate are electrically connected within an opening of the insulating ring. The lid is disposed so as to expose an outer side of at least a portion of the lid opposed to the opening of the insulating ring directly to an outside environment.

Abstract: A non-aqueous electrolyte secondary battery including a wound electrode body in which a positive electrode and a negative electrode are wound with a separator therebetween; the positive electrode having a positive electrode current collector, a first positive electrode mixture layer formed on a first surface of the positive electrode current collector which faces the outside of the electrode body, and a second positive electrode mixture layer formed on a second surface of the positive electrode current collector which faces the inside of the electrode body; the first positive electrode mixture layer and the second positive electrode mixture layer each containing a positive electrode active material; and the dibutyl phthalate oil absorption amount of the positive electrode active material contained in the first positive electrode mixture layer being less than the dibutyl phthalate oil absorption amount of the positive electrode active material contained in the second positive electrode mixture layer.

Abstract: An object of the present disclosure is to provide a nonaqueous electrolyte secondary battery that can suppress lowering in capacity due to high-temperature storage of the battery. The nonaqueous electrolyte secondary battery (10) includes: a positive electrode (11) containing one or more positive electrode active materials; a negative electrode (12); and a nonaqueous electrolyte containing a fluorine compound, where: the positive electrode active materials include a complex oxide A containing Li, Ni, and W and a complex oxide B containing Li, Ni, and W as an optional element; W content in the complex oxide A is 5 mol % or more; W content in the complex oxide B is 0.5 mol % or less; and a mass ratio of the complex oxide A is 0.002% or more and 0.1% or less relative to the total of the complex oxide A and the complex oxide B.

Abstract: A battery pack includes: a charging voltage detector for detecting charging voltage applied to a charging path; a charging first transistor disposed in series on the charging path for controlling charging current flowing through the charging path; a charging second transistor for controlling operation of the charging first transistor; and a controller for controlling operation of the charging first transistor and the charging second transistor. Based on the charging current detected by a charging current detector and the charging voltage detected by the charging voltage detector, the controller can adjust the charging current for charging the battery block, by controlling second ON resistance that is ON resistance of the charging second transistor in a linear region of the charging second transistor, and by controlling first ON resistance that is ON resistance of the charging first transistor in a linear region of the charging first transistor using the second ON resistance.

Abstract: In a power supply device, a plurality of battery modules are connected in series, the plurality of battery modules including fuse connected in series with battery. In the power supply device, fuse included in the plurality of battery modules is fast-blow fuse.

Abstract: A binder for a non-aqueous electrolyte secondary battery electrode that includes a crosslinked polymer having a carboxyl group or a salt thereof, wherein the crosslinked polymer includes 50% by mass or more and 100% by mass or less structural unit derived from an ethylenically unsaturated carboxylic acid monomer relative to all structural units, wherein a total amount of the ethylenically unsaturated carboxylic acid monomer and a salt thereof in terms of a non-neutralized form which is converted from the ethylenically unsaturated carboxylic acid monomer and a salt thereof relative to a total amount of the crosslinked polymer and a salt thereof is 5.0% by mass or less.

Abstract: The present disclosure aims to suppress, in a winding type electrode body in which a negative electrode lead is bonded to a winding start side end of a negative electrode collector, electrode plate deformation in association with charge/discharge cycles. A nonaqueous electrolyte secondary battery according to one aspect of the present disclosure includes a winding type electrode body (14). A negative electrode (12) includes a negative electrode lead (20a) bonded to a winding start side end of a negative electrode collector and is wound at least one turn from a winding-direction inner end so as not to face a positive electrode (11) with a separator (13) interposed therebetween. The negative electrode (12) includes an insulating tape (40) adhered to the negative electrode collector so as to straddle a surface of the negative electrode lead (20a) in a winding direction.

Abstract: A cylindrical battery includes a bottom-closed cylindrical exterior package can which receives an electrode body. A lead connected to one of a positive electrode and a negative electrode of the electrode body is extended from the electrode body and is welded to a bottom portion of the exterior package can. When the bottom portion is viewed from the outside of the exterior package can, at least a part of the welding portion between the lead and the bottom portion formed by a molten mark is formed outside of a concentric circle of the bottom portion which has a diameter equivalent to the width of the lead.