The herein-disclosed sealed battery includes a sealing plate, a sealing plug comprising a flange part opposed to an outer surface of the sealing plate, and a sealing member disposed between the sealing plate and the flange part of the sealing plug. Then, regarding the herein-disclosed sealed battery, the outer surface of the sealing plate and an opposed surface of the flange part include a rough surface area R on at least a part of a portion contacting with the sealing member and an arithmetic average roughness Sa of the rough surface area is equal to or more than 1 μm. By doing this, it is possible to suppress a liquid leakage of an electrolyte.

A method of manufacturing a power storage module includes a preparation process of preparing at least one power storage cell each having a pouring port, a fixing process of attaching and fixing a sealing member to a pouring member, a measurement process of measuring the shape of the sealing member, a pressure reduction process of reducing the pressure in the power storage cell, a re-measuring process of measuring the shape of the sealing member again after the pressure reduction process, and a determination process of calculating the displacement amount of the sealing member based on a measurement result in the measurement process and a measurement result in the re-measuring process, and determining that the internal pressure of the power storage cell is appropriate when the displacement amount is equal to or greater than a reference value.

A battery includes a case and a battery core assembly disposed in the case, the battery core assembly includes a plurality of battery core groups and an receiving space holding the plurality of battery core groups, the battery core groups are connected in series, and the battery core group includes at least one battery core; a separator plate is disposed between at least two adjacent battery core groups, the separator plate divides the receiving space into a plurality of receiving cavities, each of the receiving cavities holds one or more battery core groups , and a cavity wall of the receiving cavity comprised by a connection of the separator plate and a separation membrane; and the battery further includes a liquid injection channel and the liquid injection channel in a sealed state, the liquid injection channel is disposed on at least one of the separation membranes and the separator plates.

The disclosed technology relates to a battery that utilizes a singular encapsulant layer to seal a plurality of sets of electrodes within individual compartments of an enclosure. The battery includes a plurality of sets of electrodes, an enclosure having a plurality of compartments, wherein each compartment is configured to receive a corresponding set of electrodes, and a singular encapsulant layer disposed over the plurality of compartments. The encapsulant layer seals each set of electrodes within its respective compartment, seals the electrolyte disposed within each compartment, and fully encapsulates an electrical connection between the sets of electrodes.

The disclosed technology relates to a battery that utilizes a singular encapsulant layer to seal a plurality of sets of electrodes within individual compartments of an enclosure. The battery includes a plurality of sets of electrodes, an enclosure having a plurality of compartments, wherein each compartment is configured to receive a corresponding set of electrodes, and a singular encapsulant layer disposed over the plurality of compartments. The encapsulant layer seals each set of electrodes within its respective compartment, seals the electrolyte disposed within each compartment, and fully encapsulates an electrical connection between the sets of electrodes.

An electric storage device includes a container which houses an electric generating element, and a sealing plug which seals a liquid injecting hole into which an electrolyte is injected. The liquid injecting hole is provided in a bottom surface of a recessed portion provided to be recessed on one side surface of the container. The sealing plug includes an inserting portion to be inserted into the liquid injecting hole and a fitting portion to be fitted into the recessed portion. At least either a rim portion of the fitting portion or an opening rim portion of the recessed portion is provided with a plurality of plastic deformation portions. In each of n regions (n is an integer of at least 3) into which an outer circumference of the fitting portion or an inner circumference of the recessed portion is equally divided, one or more of the plastic deformation portion(s) is/are arranged, and, in each of regions into which the outer circumference of the fitting portion or the inner circumference of the recessed portion is halved with an arbitrary plastic deformation portion out of the plastic deformation portions set as a starting point, one or more of the plastic deformation portion(s) is/are arranged. An outer circumferential side surface of the fitting portion and an inner circumferential side surface of the recessed portion are welded over an entire circumference.

An energy storage device includes a case. The case includes a cover body where an electrolyte solution filling port is formed, and an electrolyte solution plug that closes the electrolyte solution filling port. The electrolyte solution plug includes a shaft part inserted into the electrolyte solution filling port, and a projecting part that projects from a periphery of the shaft part and is bonded to the cover body. In the cover body, a space adjacent to the shaft part is formed around the electrolyte solution filling port, and a tip end of the shaft part is disposed in the electrolyte solution filling port.

The present application provides an end cover assembly, a battery cell, a battery pack, apparatus and a liquid injection method. The end cover assembly includes an end cover plate, including a through hole for injecting electrolyte and a fixing portion arranged around the through hole; a nail body, including an accommodating portion for receiving the fixing portion. The accommodating portion is in a shape of annular and includes two inner walls arranged to be spaced apart from each other in a radial direction of the accommodating portion, and an inner wall and an outer wall of the fixing portion are respectively pressed against and engaged with the two inner walls of the accommodating portion to seal the through hole.

Provided is a method for manufacturing an energy storage device including an electrode that has an active material layer, an electrolyte solution, and a case. According to the present embodiment, the method including injecting an electrolyte solution in a predetermined amount into a case is characterized in that the predetermined amount is an amount such that, an alkali metal or an alkaline earth metal at least partially comes into contact with a free electrolyte solution that is the electrolyte solution excluding the electrolyte solution soaking into the electrode assembly in the case, with the case housing therein: the alkali metal or the alkaline earth metal of an ion supply member that has the alkali metal or the alkaline earth metal disposed on a conductive member other than the active material layer; and an electrode assembly including the stacked electrode that has electrical conduction to the conducive member of the ion supply member.

A miniature electrochemical cell of a primary or a secondary chemistry with a total volume that is less than 0.5 cc is described. The cell has a casing comprising an annular sidewall supported on a lower plate opposite an upper closure plate. The upper plate has a sealed electrolyte fill port. A current collector having an opening aligned with the fill port contacts an inner surface of the upper plate. An anode active material contacts the lower plate and a cathode active material contacts the upper closure plate. A dielectric material coats the lower open end of the annular sidewall and a portion of the inner surface of the sidewall. A glass seals the dielectric material to the lower plate. An electrolyte contacts the electrode assembly. The cathode active material contacting the current collector has an opening aligned with the current collector opening and the electrolyte fill port.