Abstract: A positive electrode (110) is a first electrode, and a negative electrode (120) is a second electrode having an area larger than that of the first electrode. A separator (130) is folded and extends through between the positive electrode (110) and the negative electrode (120) adjacent to each other. A folded portion of the separator (130) covers a portion of the negative electrode (120) on the same side in each of a plurality of battery cells (10). Specifically, the folded portion of the separator (130) covers the upper portion of the negative electrode (120) in each of the plurality of battery cells (10).

Abstract: A wiring module is to be attached to multiple power storage elements. The wiring module includes a busbar connected to electrode terminals of the multiple power storage elements, a circuit board connected to the busbar with solder, and a protector configured to hold the busbar and the circuit board. The protector includes a busbar arrangement surface on which the busbar is disposed and a board arrangement surface on which the circuit board is disposed. The board arrangement surface and the busbar arrangement surface are perpendicular to each other.

Abstract: A wiring module is attached to an electricity storage element group including a plurality of electricity storage elements aligned. The wiring module includes: a plurality of busbars connected to electrodes of the plurality of electricity storage elements; and an insulating protector that is insulating, holds the plurality of busbars, and is attached to a case containing the electricity storage element group. The insulating protector has a positioning portion engaging with the case.

Abstract: A remaining capacity estimation apparatus includes a storage processing unit and a calculation unit. The storage processing unit acquires a model from a model generation apparatus and stores the model in a model storage unit. When data for updating the model are acquired from the model generation apparatus, the storage processing unit updates the model stored in the model storage unit. The calculation unit calculates a remaining capacity of a storage battery managed by the remaining capacity estimation apparatus by using the model stored in the model storage unit. At this time, data (measurement data for calculation) input to the model include a current, a voltage, and a temperature of the storage battery. When the input data when generating the model are only a current, a voltage, and a temperature, the measurement data for calculation are only a current, a voltage, and a temperature.

Abstract: There is provided a negative electrode (100) for a lithium ion secondary battery, in which a negative electrode active material layer (120) containing at least a negative electrode active material and a binder is formed on a current collector (110). An insulating layer (300) containing at least an insulating material and a binder is further provided on a surface of the negative electrode active material layer (120), the binder contained in the insulating layer (300) includes at least styrene-butadiene rubber and at least one selected from carboxymethyl cellulose and salts thereof, and the binder contained in the negative electrode active material layer (120) is at least one selected from polyacrylic acid and salts thereof.

Abstract: A deterioration estimation apparatus includes a storage processing unit and a calculation unit. The storage processing unit acquires a plurality of models from a model generation apparatus, and stores the models in a model storage unit. A plurality of models are generated by performing machine-learning on training data, the training data using, as input values, measurement data for training indicating a result of measuring a state of a storage battery when the number of charge and discharge times is ?i to ?j (where j?i), and using, as a target value, SOH indicating a deterioration state of the storage battery when the number of charge and discharge times is ? (where ?>?j). The calculation unit uses a plurality of models stored in a model storage unit to calculate an estimation result of transition of SOH of a storage battery managed by the deterioration estimation apparatus.

Abstract: A film-covered battery includes a coverage case having a film covering material and a power generation element contained in the coverage case. The coverage case has a first sealing part that guides a terminal and a second sealing part that does not guide a terminal. The second sealing part is formed on at least one face (face F) with a maximum area among exterior faces of the power generation element. The assembled battery has a third sealing part being a part of the second sealing part and overlapping the power generation element. In the assembled battery, a heat dissipation plate is placed on the face F where the third sealing part is formed. A projection area of the third sealing part and the heat dissipation plate on the face F occupies 40% or more of the face F.

Abstract: A control apparatus controls a relay. The control apparatus includes a control element, a monitoring circuit, and a determination unit. An input signal is input to the control element. The control element outputs an output signal and a diagnostic signal. The monitoring circuit generates an output monitor signal indicating the level of the output signal. The determination unit determines whether or not the control apparatus has an abnormality, based on a relationship between the output monitor signal and the diagnostic signal. Here, the output signal is a signal for driving the relay. One terminal of the monitoring circuit is electrically connected to an output terminal of the control element for the output signal. The diagnostic signal is a signal for monitoring the state of an output destination of the output signal.

Abstract: A first voltage detection device includes a first holding body, a first voltage detection portion held by the first holding body, and a first conductor attached to the first holding body, at least a portion of the conductor being functioning as a fuse.

Abstract: A first voltage detection device includes a plurality of first voltage detection portions connected to a plurality of lead portions of a plurality of battery cells, a first holding body holding the plurality of first voltage detection portions, and an insulator provided at the first holding body, at least a portion of the insulator being located between the different lead portions.

Abstract: A battery module includes a battery cell, a positive electrode lead or negative electrode lead provided in the battery cell, a first conductor electrically connected to the battery cell, at least a portion of the first conductor being functioning as a fuse above the positive electrode lead or the negative electrode lead, and a first base, at least a portion of the first base being located between the positive electrode lead or negative electrode lead, and the fuse.

Abstract: A first fuse device includes a first conductor, at least a portion of the conductor being functioning as a fuse, and a first wiring electrically connected to the first conductor. At least a portion of the first wiring passes through a first space of the first conductor, the first space being defining the fuse.

Abstract: A battery pack houses a battery inside a battery case, the battery case (100) includes an opening (450), cables (200, 300) electrically connected with the battery is inserted to the opening, a cable protection member (400) including a through portion (410) is arranged at the opening, the cable protection member is attachable to the opening in at least two different directions, and a position of the through portion to the battery case changes according to an attaching direction.

Abstract: Any of a position of a fifth end surface of a first folded portion at a first side portion, a position of a first inner surface of the first folded portion opposite to the fifth end surface of the first folded portion, and a position of a portion between the fifth end surface and the first inner surface of the first folded portion is aligned with a position of a third end surface of a second electrode at the first side portion.

Abstract: A plurality of first current collector parts (112a) are drawn out from a stacked part (100a). An exterior material (200) encloses a battery element (100). A first tab (310) is connected to the plurality of first current collector parts (112a). The plurality of first current collector parts (112a) between the stacked part (100a) and the first tab (310) have a first region (RG1). In the first region (RG1), a thickness of a bundle including the plurality of first current collector parts (112a) in a third direction (Z) decreases from the stacked part (100a) to the first tab (310), and a decrease rate of the thickness decreases from the stacked part (100a) to the first tab (310).

Abstract: Provided is a current collector electrode sheet (10) including a slurry application area (11) formed by intermittently applying and drying a slurry containing an active material and a non-application area (12), on both surfaces of a metal foil (9), in which the application area (11) and the non-application area (12) are alternately formed in a winding direction of the metal foil (9) having a strip shape, and, in a compression step of continuously compressing the slurry application area (11) and the non-application area (12) using a pair of compression rollers in a thickness direction of the current collector electrode sheet (10), an area which is not compressed by the compression rollers, is present in a tailing portion (14) at a terminal end (13) of each application area (11).

Abstract: A film (200) includes a first accommodation portion (210) and a second accommodation portion (220). The first accommodation portion (210) covers one side of the battery element (100). The second accommodation portion (220) covers the other side opposite to the one side of the battery element (100). A recessed portion (232) is formed at a portion of the film (200) folded from one of the first accommodation portion (210) and the second accommodation portion (220) to the other. The recessed portion (232) is recessed towards the battery element (100). The recessed portion (232) extends along one direction orthogonal to a direction from the one side toward the other side of the battery element (100).

Abstract: A positive electrode (100) includes a positive electrode current collector (110), a positive electrode mixture (120), and a mixture (130). The positive electrode current collector (110) has a first surface (112). The first surface (112) of the positive electrode current collector (110) includes a first region (112a), a second region (112b), and a third region (112c). The positive electrode (100) satisfies the following expression (1). 0?L3/(L1+L3)?0.075??(1) Here, L1 is a length of the positive electrode (100) of the first region (112a) of the positive electrode (100) in one direction (first direction (X)), and L3 is a length of the third region (112c) of the positive electrode (100) in the one direction (first direction (X)).

Abstract: A battery pack includes a plurality of stacked battery assemblies and an insulating spacer. The battery assemblies are provided with a pair of unit cells stacked in a thickness direction. Each unit cell includes a cell body having a power generation element and a flat shape, and an electrode tab protruding out from the cell body. The spacer is disposed between electrode tabs of the pair of the unit cells holding the electrode tabs and is electrically connected in the battery assemblies. A pair of the electrode tabs has distal end portions electrically connecting adjacent battery assemblies of the battery assemblies to each other. The distal end portions are bent in the stacking direction on a side of a surface of the insulating spacer. The distal end portions are positioned on opposite sides of the cell body. The distal end portions that are bent are electrically connected to each other.

Abstract: The inspection device includes a charging unit and an inspection unit, and detects the connection anomaly by retrieving a first cell voltage at the early stage of start of the constant-current charging and a second cell voltage at a stage where the charging has progressed to determine deviations from the average value of all the cell groups.