A button cell and an electronic device relate to the technical field of batteries. The button cell includes a housing (10) and a cover assembly (20); the housing includes a bottom wall (11) and an annular side wall (12); the cover assembly includes a top cover (21) having a through hole at its central area and a conductive member (22) covering the through hole; an outer edge of the top cover (21) is welded with a top of the side wall (12) to form an accommodating chamber (101) for accommodating an electrode assembly (30) and an electrolyte; and the conductive member (22) is disposed on a side of the top cover (21) facing the accommodating chamber (101), and the electronic device includes the button cell.

A button cell and an electronic device relate to the technical field of batteries. The button cell includes a housing (10) and a cover assembly (20); the housing includes a bottom wall (11) and an annular side wall (12); the cover assembly includes a top cover (21) having a through hole at its central area and a conductive member (22) covering the through hole; an outer edge of the top cover (21) is welded with a top of the side wall (12) to form an accommodating chamber (101) for accommodating an electrode assembly (30) and an electrolyte; and the conductive member (22) is disposed on a side of the top cover (21) facing the accommodating chamber (101), and the electronic device includes the button cell.

A button-type secondary battery includes an electrode assembly having a first electrode with a first electrode tab and a second electrode with a second electrode tab; a can accommodating the electrode assembly and to which the first electrode tab is connected; a top cap coupled to an opening of the can and to which the second electrode tab is connected; and a first insulation member insulating the first electrode tab. The first electrode tab includes a first coupling surface coupled to the first electrode and a second coupling surface extending from the first coupling surface and coupled to the can. The first insulation member includes a first insulator attached to an outer circumferential surface of the electrode assembly to cover the first coupling surface, and a second insulator horizontally extending from an upper end of the first insulator toward a top surface of the electrode assembly.

A button-type secondary battery includes an electrode assembly having a first electrode with a first electrode tab and a second electrode with a second electrode tab; a can accommodating the electrode assembly and to which the first electrode tab is connected; a top cap coupled to an opening of the can and to which the second electrode tab is connected; and a first insulation member insulating the first electrode tab. The first electrode tab includes a first coupling surface coupled to the first electrode and a second coupling surface extending from the first coupling surface and coupled to the can. The first insulation member includes a first insulator attached to an outer circumferential surface of the electrode assembly to cover the first coupling surface, and a second insulator horizontally extending from an upper end of the first insulator toward a top surface of the electrode assembly.

A rechargeable battery includes: an electrode assembly including a first electrode, a second electrode, and a separator disposed between the first electrode and the second electrode; a case that is connected to the first electrode to accommodate the electrode assembly, and includes an opening exposing the electrode assembly and a first side wall forming the opening; a cap plate that is coupled to the case to cover an outer area of the opening, and includes a through-hole exposing a central area of the opening and a second side wall overlapping the first side wall in a horizontal direction; a terminal plate that is connected to the second electrode to be insulation-bonded to the cap plate and covers the through-hole; and a first bonding layer that is positioned between the first side wall of the case and the second side wall of the cap plate, and bonds the first side wall and the second side wall.

Disclosed is a rechargeable battery including: an electrode assembly wound with a separator between a first electrode and a second electrode; a first exterior material including an opening receiving the electrode assembly and facing a bottom side of the electrode assembly; a second exterior material covering the opening, and combined to the first exterior material to seal an internal side of the first exterior material; and a reinforcing member having greater rigidity than the first exterior material and the second exterior material, disposed between the electrode assembly and the first exterior material, and including a side wall for surrounding a lateral side of the electrode assembly.

A rechargeable battery according to an exemplary embodiment of the present invention includes: an electrode assembly including a first electrode, a second electrode, and a separator positioned between the first electrode and the second electrode; a case having an internal space accommodating the electrode assembly and an opening with one opened side; a cap plate coupled to the opening of the case and having a terminal hole exposing the internal space; and an electrode terminal electrically connected to the electrode assembly through the terminal hole and overlapping the cap plate, wherein the separator has a greater width than the first electrode and the second electrode, and the separator is in contact with the internal bottom surface of the case.

A rechargeable battery according to an exemplary embodiment of the present invention includes: an electrode assembly including a first electrode, a second electrode, and a separator positioned between the first electrode and the second electrode; a case having an internal space accommodating the electrode assembly and an opening with one opened side; a cap plate coupled to the opening of the case and having a terminal hole exposing the internal space; and an electrode terminal electrically connected to the electrode assembly through the terminal hole and overlapping the cap plate, wherein the separator has a greater width than the first electrode and the second electrode, and the separator is in contact with the internal bottom surface of the case.

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.