A secondary electrochemical battery sealing body, including a negative electrode cap, a circuit board module, and an insulating gasket. A battery case has a recessed wire turn structure at an end thereof adjacent to the negative electrode cap. The circuit board module is located between the wire turn and the negative electrode cap, and multiple electronic components are arranged thereon. The negative electrode cap and the circuit board module constitute a first enclosed electromagnetic shielding space. The battery case and the circuit board module constitute a second enclosed electromagnetic shielding space. The electronic component is provided within the first enclosed electromagnetic shielding space and the second enclosed electromagnetic shielding space. The insulating gasket has a “” shape in section, and is disposed within gaps of the battery case, the circuit board module and the negative electrode cap.

A battery including a power generating element, a first sealant, a first holding member holding the first sealant, and an outer case enclosing the power generating element, wherein the first sealant and the first holding member are enclosed in the outer case together with the power generating element, and the first holding member holds the first sealant by enclosing the first sealant in a state in which the first sealant is not in contact with the power generating element.

Provided is a packaging material for electrochemical cells which has an identification mark that can be recognized from the outside and that is difficult to forge. The packaging material comprises a multilayer film which has a structure formed by laminating a base layer (11), an adhesive layer (13), a metal foil layer (12), an acid-modified polyolefin layer (14), and a heat-sealable layer (15) in this order, wherein the base layer (11) comprises both a oriented polyester film (11b) and a oriented nylon film (11e) with a printed layer (11c) provided on the surface of the oriented polyester film (11b) that faces the oriented nylon film (11e).

The present invention provides a fuel cell separator with a gasket manufactured by integrally forming a gasket on one side of a separator; independently injection molding a frame gasket on a frame such that a first airtight portion covers the entire surface of the frame to maintain the shape of the frame gasket and a second airtight portion projects upward and downward from both ends of the first airtight portion; and bringing the first airtight portion of the frame gasket into contact with the other side of the separator with the gasket formed on one side thereof. To create a fuel cell stack in certain embodiments, the invention stacks the second airtight portion of the frame gasket on another second airtight portion of an adjacent unit cell with a membrane-electrode assembly interposed therebetween.

A thin film battery package includes: a case having an open top side and defining a predetermined space therein, wherein the case has one side at which first and second electrodes formed of a metal material are exposed and electrically connected to the outside; a battery block on which a plurality of unit batteries are stacked so that the plurality of unit batteries is electrically connected between a first terminal and a second terminal, wherein the battery block is seated within the case so that the first and second terminals of the unit battery disposed at one end thereof are electrically connected to the first and second electrodes; and a cover sealed and coupled to the top surface of the case.

An electrochemical cell is described, including an anodic chamber and a cathodic chamber separated by an electrolyte separator tube, all contained within a cell case. The cell also includes an electrically insulating ceramic collar positioned at an opening of the cathodic chamber, and defining an aperture in communication with the opening; along with a cathode current collector assembly; and at least one metallic ring that has a coefficient of thermal expansion (CTE) in the range of about 3 to about 7.5 ppm/° C., contacting at least a portion of a metallic component within the cell, and an adjacent ceramic component. An active braze alloy composition attaches and hermetically seals the ring to the metallic component and the collar. Sodium metal halide batteries that contain this type of cell are also described, along with methods for sealing structures within the cell.

Provided is a secondary battery, which can prevent a protective circuit board and an electrode terminal from colliding with each other by providing a gasket including a support unit protruding from a top surface of a cap plate to be higher than the electrode terminal. The secondary battery includes an electrode assembly, a case accommodating the electrode assembly, a cap plate coupled to an opening of the case, an electrode terminal electrically connected to the electrode assembly and upwardly protruding through a terminal throughhole of the cap plate, and a gasket interposed between the cap plate and the electrode terminal and electrically insulating the cap plate and the electrode terminal from each other. The gasket includes a support unit protruding from the cap plate to be higher than the electrode terminal.

A terminal covering resin film for secondary cell, which is attached so as to cover part of an outer surface of a terminal connected to a power generation element of a secondary cell, comprises an innermost layer contacting the terminal, and an outermost layer forming a surface opposite to the innermost layer wherein the innermost layer is a layer of not less than 20 μm in thickness containing an acid-modified polyolefin and a melt flow rate of the innermost layer is not less than 2.0 g/10 minutes.

This application relates to a method of edge sealing for a secondary lithium battery, including: (1) drawing a 3D model of a battery edge of a secondary lithium battery, and inputting it into a 3D printer; (2) positioning the secondary lithium battery in a 3D printing area, and fixing a relative position of the secondary lithium battery in the 3D printing area; (3) stimulating, by the 3D printer, the battery edge according to the 3D model and setting a printing path; (4) adding edge sealing glue in a printing head of the 3D printer, the printing head moves according to the set printing path and meantime performs at least one time of printing, so that printed edge sealing glue covers the battery edge; (5) solidifying the edge sealing glue. The method of edge sealing of this application has broader application, which can be applied to batteries of any shape.

Approaches herein provide a device, such as a battery protection device, including a cathode current collector and an anode current collector provided atop a substrate, a cathode provided atop the cathode current collector, and an electrolyte layer provided over the cathode. An interlayer, such as one or more layers of silicon, antimony, magnesium, titanium, magnesium lithium, and/or silver lithium, is formed over the electrolyte layer. An anode contact layer, such as an anode or anode current collector, is then provided over the interlayer. By providing the interlayer atop the electrolyte layer prior to anode contact layer deposition, lithium from the cathode side alloys with the interlayer, thus providing a more isotropic or uniaxial detachment of the anode contact layer.