A rechargeable battery includes: a case receiving an electrode assembly and including an opening; a cap assembly including a cap plate coupled to the case and covering the opening, and a terminal plate coupled to the cap plate; and a housing covering the cap plate and coupled to the case, and an outer surface of the terminal plate protrudes more than an outer surface of the housing to have a height difference.

A rechargeable battery includes: a case receiving an electrode assembly and including an opening; a cap assembly including a cap plate coupled to the case and covering the opening, and a terminal plate coupled to the cap plate; and a housing covering the cap plate and coupled to the case, and an outer surface of the terminal plate protrudes more than an outer surface of the housing to have a height difference.

The present disclosure provides a button cell and an electronic device. In the button cell, a conductive member covers an opening of a top cover, and the top cover is connected to the conductive member. A cell is placed in an accommodating cavity of a bottom shell. A first tab is welded to an inner bottom wall of the bottom shell, and then the top cover having the conductive member is connected to the bottom shell in a sealed manner, with a second tab on the cell being electrically connected to the conductive member. Finally, an electrolyte solution is injected into the accommodating cavity. After the electrolyte solution is injected, a sealing member covers the liquid injection port, and the sealing member is connected to the liquid injection port in a sealed manner.

A secondary battery includes a battery device, an outer package member, and an electrode terminal. The battery device includes a positive electrode and a negative electrode. The outer package member has a flat and columnar shape, and includes a containing part and a protruding part. The containing part is configured to accommodate the battery device, and the protruding part protrudes from the containing part. The outer package member is coupled to one of the positive electrode and the negative electrode. The electrode terminal is coupled to the other of the positive electrode and the negative electrode. The electrode terminal is disposed inside the protruding part, and includes a portion protruding from the protruding part.

A rechargeable battery includes: an electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode; a case including an inner space accommodating the electrode assembly, and an opening; a cap plate coupled to the case at the opening and including a terminal hole exposing the inner space; an electrode terminal electrically connected to the electrode assembly through the terminal hole and overlapping the cap plate; electrode tabs respectively connected to the first electrode and the second electrode; and an electrolyte solution in the inner space, and at least one electrode tab of the electrode tabs has an inclined portion that is inclined at a first angle with respect to a surface of the electrode assembly facing the at least one electrode tab.

A rechargeable battery includes: an electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode; a case including an inner space accommodating the electrode assembly, and an opening; a cap plate coupled to the case at the opening and including a terminal hole exposing the inner space; an electrode terminal electrically connected to the electrode assembly through the terminal hole and overlapping the cap plate; electrode tabs respectively connected to the first electrode and the second electrode; and an electrolyte solution in the inner space, and at least one electrode tab of the electrode tabs has an inclined portion that is inclined at a first angle with respect to a surface of the electrode assembly facing the at least one electrode tab.

A rechargeable battery includes: an electrode assembly including a first electrode tab and a second electrode tab; a case accommodating the electrode assembly and electrically connected to the first electrode tab; a cap assembly including a cap plate coupled to an opening of the case, and a terminal plate coupled to the cap plate in an insulating state and electrically connected to the second electrode tab; and a conductive double-sided adhesive member applied to at least one of a first connection between the first electrode tab and the case and a second connection between the second electrode tab and the terminal plate.

A secondary battery includes an outer package member, an electrode terminal, a battery device, a first wiring line, and a second wiring line. The outer package member has a flat and columnar shape and includes a first bottom part and a second bottom part opposed to each other. The electrode terminal is provided on the first bottom part and is insulated from the first bottom part. The battery device is contained inside the outer package member and includes a first electrode and a second electrode. The first electrode and the second electrode are opposed to each other and are wound. The first wiring line is so coupled to the first electrode as to protrude from the battery device toward the first bottom part and is coupled to the electrode terminal. The second wiring line is so coupled to the second electrode as to protrude from the battery device toward the first bottom part and is coupled to the first bottom part. The battery device has a winding center space at a center around which the first electrode and the second electrode are each wound. The second wiring line includes a tip part that is bent in a direction approaching the winding center space and is coupled to the first bottom part.

A secondary battery includes an outer package member, an electrode terminal, a battery device, a first wiring line, and a second wiring line. The outer package member has a flat and columnar shape and includes a first bottom part and a second bottom part opposed to each other. The electrode terminal is provided on the first bottom part and is insulated from the first bottom part. The battery device is contained inside the outer package member and includes a first electrode and a second electrode. The first electrode and the second electrode are opposed to each other and are wound. The first wiring line is so coupled to the first electrode as to protrude from the battery device toward the first bottom part and is coupled to the electrode terminal. The second wiring line is so coupled to the second electrode as to protrude from the battery device toward the first bottom part and is coupled to the first bottom part. The battery device has a winding center space at a center around which the first electrode and the second electrode are each wound. The second wiring line includes a tip part that is bent in a direction approaching the winding center space and is coupled to the first bottom part.

A rechargeable battery according to an embodiment includes: an electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode; a case including an inner space to accommodate the electrode assembly and having an opening at a side thereof; a cap plate coupled to the opening of the case and including a terminal hole to expose the inner space; and an electrode terminal electrically connected to the electrode assembly through the terminal hole and overlapping the cap plate, and the cap plate and the electrode terminal are made of different metals.