A flexible printed circuit board with a multi-layer all solid-state lithium ion battery printed thereon is described. A flexible printed circuit board comprises at least one electrically insulating liquid crystal polymer or polyimide layer and at least one electrically conductive metal layer. The multi-layer all solid-state lithium ion battery comprises at least one anode, at least one cathode, and at least one UV curable solid electrolyte therebetween. The battery is encapsulated between the flexible printed circuit board and a layer of laminated aluminum foil on top of the multi-layer all solid-state lithium ion battery and adhered directly to the flexible printed circuit board.

A flexible printed circuit board with a multi-layer all solid-state lithium ion battery printed thereon is described. A flexible printed circuit board comprises at least one electrically insulating liquid crystal polymer or polyimide layer and at least one electrically conductive metal layer. The multi-layer all solid-state lithium ion battery comprises at least one anode, at least one cathode, and at least one UV curable solid electrolyte therebetween. The battery is encapsulated between the flexible printed circuit board and a layer of laminated aluminum foil on top of the multi-layer all solid-state lithium ion battery and adhered directly to the flexible printed circuit board.

A pouch for a secondary battery having improved stability to an external force and an internal pressure and a secondary battery including the pouch are disclosed. In an aspect, a pouch for a secondary battery implemented based on some embodiments of the disclosed technology includes a pouch cup including a battery cell accommodating portion, a tab receiving portion formed at one end portion of the pouch cup to be in communication with one end of the battery cell accommodating portion, a supporting portion adjacent to the tab receiving portion at the one end portion of the pouch cup to be separated from the battery cell accommodating portion and the tab receiving portion, the supporting portion comprising a plurality of columns in the supporting portion, and a reinforcing film attached on an outer wall of the supporting portion, the reinforcing film including a material different from that of the outer wall of the supporting portion.

A pouch for a secondary battery having improved stability to an external force and an internal pressure and a secondary battery including the pouch are disclosed. In an aspect, a pouch for a secondary battery implemented based on some embodiments of the disclosed technology includes a pouch cup including a battery cell accommodating portion, a tab receiving portion formed at one end portion of the pouch cup to be in communication with one end of the battery cell accommodating portion, a supporting portion adjacent to the tab receiving portion at the one end portion of the pouch cup to be separated from the battery cell accommodating portion and the tab receiving portion, the supporting portion comprising a plurality of columns in the supporting portion, and a reinforcing film attached on an outer wall of the supporting portion, the reinforcing film including a material different from that of the outer wall of the supporting portion.

A terminal-coating resin film according to one aspect of the present disclosure is so disposed in a power storage device including a power storage device body and a terminal electrically connected to the power storage device body as to cover an outer peripheral surface of part of the terminal. The terminal-coating resin film has a single-layer structure or a multilayer structure and includes a resin layer having at least one secondary dispersion peak γ within a range of −130° C. to −50° C. in a profile of a loss tangent tan δ obtained by dynamic viscoelastic measurement under a condition of 1.0 Hz. The terminal-coating film is comprised of a resin composition including a first resin including polyolefin and a second resin including at least one resin selected from polyester, polyamide, polycarbonate, and polyphenylene ether.

A terminal-coating resin film according to one aspect of the present disclosure is so disposed in a power storage device including a power storage device body and a terminal electrically connected to the power storage device body as to cover an outer peripheral surface of part of the terminal. The terminal-coating resin film has a single-layer structure or a multilayer structure and includes a resin layer having at least one secondary dispersion peak γ within a range of −130° C. to −50° C. in a profile of a loss tangent tan δ obtained by dynamic viscoelastic measurement under a condition of 1.0 Hz. The terminal-coating film is comprised of a resin composition including a first resin including polyolefin and a second resin including at least one resin selected from polyester, polyamide, polycarbonate, and polyphenylene ether.

A gasket for a secondary battery includes a base resin and a rust inhibitor, wherein the base resin includes polybutylene terephthalate and the rust inhibitor includes an anti-rust material and a polymer resin, and the base resin and the polymer resin are different.

A gasket for a secondary battery includes a base resin and a rust inhibitor, wherein the base resin includes polybutylene terephthalate and the rust inhibitor includes an anti-rust material and a polymer resin, and the base resin and the polymer resin are different.

A button-type secondary battery of the present invention comprises: a first can having a first side surface extending vertically from a circumference of a first base surface; a second can having a second side surface extending vertically from a second base surface; and a gasket disposed between the first side surface and the second side surface when the first can and the second can are coupled to each other. The second base surface has a greater diameter than the first base surface, and the first can and the second can are coupled to each other with the first side surface inserted inside the second side surface. The first and second cans are fixed together by deforming the gasket so as to extend into a vent hole punched in the second side surface of the second can. A method for manufacturing the button-type secondary battery is also provided.

A button-type secondary battery of the present invention comprises: a first can having a first side surface extending vertically from a circumference of a first base surface; a second can having a second side surface extending vertically from a second base surface; and a gasket disposed between the first side surface and the second side surface when the first can and the second can are coupled to each other. The second base surface has a greater diameter than the first base surface, and the first can and the second can are coupled to each other with the first side surface inserted inside the second side surface. The first and second cans are fixed together by deforming the gasket so as to extend into a vent hole punched in the second side surface of the second can. A method for manufacturing the button-type secondary battery is also provided.