The present invention provides a secondary cell having high reliability. A positive electrode plate for a secondary cell having a positive electrode core body made of metal, and a positive electrode active material layer formed on both surfaces of the positive electrode core body, wherein the positive electrode plate has a first edge side of the positive electrode core body, and in the positive electrode tab, the thickness of the end of the positive electrode core body near the first edge side is less than the thickness of the end of the positive electrode core body in the first edge side.

The purpose of the present disclosure is to provide a cylindrical battery in which a short circuit between an outer can and a sealing body can be suppressed. In a cylindrical battery (10) according to an embodiment of the present disclosure, a gasket (28) includes an extension part (29) extending from between a sealing body (17) and a tip (33a) on a radially inward side of a shoulder (33) of an outer can (16). The extension part (29) is arranged so that the gasket (28) intersects any straight lines connecting an upper surface (47) of the shoulder (33) opposite to the electrode body side in the axial direction and an upper surface (41) of an inner portion (40) opposite to the electrode body side in the axial direction, the inner portion (40) being located radially inward of the shoulder (33) in the sealing body (17).

Devices for insulating the electrical terminals of cylindrical batteries, such as lithium-ion cells, to prevent the occurrence of shorting. Certain embodiments are directed to devices which cover one or more terminals of the cell, thereby providing an insulative barrier, while still allowing the cell to be used. Various embodiments are described including partially covering the topmost portions of the negatively charged exterior cell case, closest to the positive terminal of the cell, and attaching the covering via a circumferential appendage which locks onto the cell. In another embodiment the cell covering extends axially down the side of the cell case to cover part of, or the entirety of, the side of the negatively charged case.

The present invention aims to provide a power supply apparatus capable of suppressing a short circuit that occurs between adjacent battery cells. The power supply apparatus includes: a plurality of battery cells in which positive electrodes and negative electrodes are provided alternately and inversely with each other; a plurality of bus bars arranged in a straight line so as to series-connect the plurality of battery cells; a sheet-like insulation film disposed on at least one surface side of the plurality of bus bars; and a resin frame for fixing the plurality of battery cells, wherein an insulation portion for insulating the adjacent battery cells from each other is provided on the insulation film or in the resin frame.

The present disclosure provides batteries that have a reduced risk or no risk of gastrointestinal damage in a conductive aqueous environment, such as when accidentally swallowed. The batteries of the present disclosure advantageously stop producing significant current flow shortly after contact with a conductive aqueous medium, including the conductive aqueous medium of a wet tissue environment such as that found in the GI tract. The present disclosure further provides multi-layered laminate materials useful for manufacturing such batteries and methods for making the batteries. The batteries are, in some embodiments, 3 V or 1.5 V coin or button cell-type batteries.

The disclosure provides a pin assembly for a cell. The cell includes an electrode assembly comprising a central hole, and the pin assembly includes a housing, at least one electrode lead, and an insulating part. The housing includes a tube including a top opening and a bottom opening. The tube is disposed in the central hole of the cell. The insulating part is fully or partially disposed in the tube. The at least one electrode lead penetrates through the insulating part; a lower end of the at least one electrode lead is electrically connected to a positive electrode and/or a negative electrode of the cell, thereby leading out the polarity of the cell.

The disclosure provides a pin assembly for a cell. The cell includes an electrode assembly comprising a central hole, and the pin assembly includes a housing, at least one electrode lead, and an insulating part. The housing includes a tube including a top opening and a bottom opening. The tube is disposed in the central hole of the cell. The insulating part is fully or partially disposed in the tube. The at least one electrode lead penetrates through the insulating part; a lower end of the at least one electrode lead is electrically connected to a positive electrode and/or a negative electrode of the cell, thereby leading out the polarity of the cell.

This application relates to a battery, an electric apparatus, and a method and an apparatus for manufacturing a battery. The battery includes a plurality of battery cells and an insulation part. The plurality of battery cells are electrically connected by a busbar; and the battery cell includes a pressure relief mechanism, and the pressure relief mechanism is configured to be actuated when internal pressure or temperature of the battery cell reaches a threshold, to release the internal pressure. The insulation part is configured to cover the busbar, to prevent emissions from the battery cell from causing short circuit of at least one battery cell when the pressure relief mechanism is actuated.

This application relates to a battery, an electric apparatus, and a method and an apparatus for manufacturing a battery. The battery includes a plurality of battery cells and an insulation part. The plurality of battery cells are electrically connected by a busbar; and the battery cell includes a pressure relief mechanism, and the pressure relief mechanism is configured to be actuated when internal pressure or temperature of the battery cell reaches a threshold, to release the internal pressure. The insulation part is configured to cover the busbar, to prevent emissions from the battery cell from causing short circuit of at least one battery cell when the pressure relief mechanism is actuated.

A solid state battery that includes at least one battery constituent unit including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed therebetween; a positive electrode external terminal on a first side surface of the solid state battery laminate; and a negative electrode external terminal on a second side surface of the solid state battery laminate. The positive electrode layer and the negative electrode layer each include a terminal contact portion in direct contact with the positive electrode external terminal and the negative electrode external terminal, respectively, and a non-terminal contact portion that is not in direct contact with the positive electrode external terminal and the negative electrode external terminal, respectively, and in at least one of the positive electrode layer and the negative electrode layer, a sectional area of the terminal contact portion is smaller than a sectional area of the non-terminal contact portion.