A secondary battery is provided in which a first electrode (negative electrode) terminal and a second electrode (positive electrode) terminal may be concurrently (e.g., simultaneously) implemented in a cap assembly. A secondary battery includes: a case including a beading part and a crimping part; an electrode assembly physically coupled to the case and including a first electrode plate and a second electrode plate, the first electrode plate being electrically connected to the case; a first insulating gasket between the beading part and the crimping part; a cap plate coupled between the beading part and the crimping part through the first insulating gasket; a second insulating gasket extending through and coupled to the cap plate; and a rivet terminal extending through and physically coupled to the second insulating gasket, wherein the rivet terminal is electrically connected to the second electrode plate of the electrode assembly.

A secondary battery is provided in which a first electrode (negative electrode) terminal and a second electrode (positive electrode) terminal may be concurrently (e.g., simultaneously) implemented in a cap assembly. A secondary battery includes: a case including a beading part and a crimping part; an electrode assembly physically coupled to the case and including a first electrode plate and a second electrode plate, the first electrode plate being electrically connected to the case; a first insulating gasket between the beading part and the crimping part; a cap plate coupled between the beading part and the crimping part through the first insulating gasket; a second insulating gasket extending through and coupled to the cap plate; and a rivet terminal extending through and physically coupled to the second insulating gasket, wherein the rivet terminal is electrically connected to the second electrode plate of the electrode assembly.

A cylindrical secondary battery includes: an electrode assembly including a positive electrode plate, a separator, and a negative electrode plate; a cylindrical can accommodating the electrode assembly and being electrically connected to the negative electrode plate, a lower end of the cylindrical can being open; a rivet terminal passing through an upper surface of the cylindrical can and electrically connected to the positive electrode plate; and a cap plate sealing the lower end of the cylindrical can, the cap plate having no electrical polarity.

A cylindrical secondary battery includes: an electrode assembly including a positive electrode plate, a separator, and a negative electrode plate; a cylindrical can accommodating the electrode assembly and being electrically connected to the negative electrode plate, a lower end of the cylindrical can being open; a rivet terminal passing through an upper surface of the cylindrical can and electrically connected to the positive electrode plate; and a cap plate sealing the lower end of the cylindrical can, the cap plate having no electrical polarity.

Provided is a sealed battery, which includes an insulating member arranged between a lid member and a collector terminal member. The insulating member includes a cylindrical portion that is positioned between a through hole and a connecting portion and surrounds the connecting portion, and a flat plate portion positioned between the lid member and the flange portion, and the flat plate portion has a first projecting portion projecting towards the lid member side, and a second projecting portion projecting towards the flange portion side. In a sectional view taken along a virtual plane including a central axis of the connecting portion, a peak of the first projecting portion is provided at a position closer to the central axis than a peak position of the second projecting portion.

A secondary battery capable of preventing a deformation is disclosed. In one embodiment, disclosed is a secondary battery comprising: an electrode assembly in which a first electrode plate having a first non-coated part protruding in a first direction, a second electrode plate having a second non-coated part protruding in a second direction that is opposite to the first direction, and a separator interposed between the first electrode plate and the second electrode plate, are wound so that the first non-coated part and the second non-coated part are exposed in opposite directions; a first current collecting plate electrically coupled to the first non-coated part; a second current collecting plate electrically coupled to the second non-coated part, and having an end part protruding farther toward the outside of the first current collecting plate by penetrating the winding center of the electrode assembly; and an insulation member positioned between the end part of the second current collecting plate and the first current collecting plate, wherein the end part of the second current collecting plate is coupled with the insulation member by pressing the insulation member from the outside thereof.

An energy storage device having improved gravimetric energy density is provided, and methods of manufacturing the same. The device can be an electrochemical cell that includes: a negative electrode including a negative electrode active material in electrically conductive contact with a negative electrode current collector and a negative electrode tab including a first attachment end and a second attachment end, the first attachment end of the negative electrode tab being connected to the negative electrode current collector and the second attachment end of the negative electrode tab being connected to a negative terminal; an electrically insulative and ion conductive medium in ionically conductive contact with the positive electrode and the negative electrode; and an outer can containing the positive electrode, negative electrode and electrically insulative and ion conductive medium, where the negative terminal is electrically isolated from the outer can.

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.

Disclosed herein is a battery cell configured to have a structure in which an electrode stack, which is configured to have a structure in which positive electrodes and negative electrodes are stacked in the height direction on the basis of the ground in the state in which separators are disposed respectively between the positive electrodes and the negative electrodes, is mounted in a battery case in a sealed state, the battery case is formed in a pipe shape having a hollow part, and the electrode stack is formed in a shape corresponding to the shape of the battery case.

A lithium battery includes a positive electrode designed as a hollow cylinder and defines a cavity, a negative electrode arranged in the cavity, a separator, a liquid electrolyte, a first current collector for the negative electrode, a second current collector for the positive electrode, an at least two-part housing that encloses an interior space in which the positive electrode together with the negative electrode arranged in the cavity and the separator are arranged, wherein a pin is provided as a first current collector inside the housing, a part of the housing serves as a second current collector, the pin has a first, terminal section embedded in the negative electrode and in direct contact with the negative electrode, and the pin has a second section not in direct contact with the negative electrode, and an insulator element that protects the second section at least partially against direct contact with the electrolyte.