A rechargeable battery is disclosed. An embodiment of the present invention provides a rechargeable battery including: an electrode assembly in which a separator is provided between a first electrode and a second electrode; a case configured to have an opening at a side thereof to accommodate the electrode assembly; a cap assembly coupled to the opening to close and seal the case; a first electrode tab configured to extend from the first electrode and to be coupled to the case; and a second electrode tab configured to extend from the second electrode and to be coupled to the cap assembly, wherein the cap assembly includes a metal layer to which the second electrode tab is coupled, and a plastic layer stacked on an outer surface of the metal layer.

A rechargeable battery is disclosed. An embodiment of the present invention provides a rechargeable battery including: an electrode assembly in which a separator is provided between a first electrode and a second electrode; a case configured to have an opening at a side thereof to accommodate the electrode assembly; a cap assembly coupled to the opening to close and seal the case; a first electrode tab configured to extend from the first electrode and to be coupled to the case; and a second electrode tab configured to extend from the second electrode and to be coupled to the cap assembly, wherein the cap assembly includes a metal layer to which the second electrode tab is coupled, and a plastic layer stacked on an outer surface of the metal layer.

A cover plate assembly, a battery cell, a battery module, a battery pack and an apparatus are disclosed. The cover plate assembly includes a top cover plate, where the top cover plate is provided with an explosion-proof valve; and an insulating plate, laminated with the top cover plate, where the insulating plate includes a base portion and a thinned region located on the base portion, the thinned region is formed by thinning the base portion, and a region enclosed by boundaries of an orthographic projection of the thinned region at least partially overlaps an orthographic projection of the explosion-proof valve in a thickness direction of the cover plate assembly. The thinned region is formed by thinning the base portion.

A sealed battery, which is an exemplary embodiment, comprises a battery case including a bottomed cylindrical outer can and a sealing body that closes an opening of the outer can, a gasket disposed between the outer can and the sealing body, and an electrode body including an electrode and housed in the battery case. The sealing body includes a metal plate, and the metal plate has a thin portion formed in an annular shape, a valve portion having a convex shape inside the battery case, and an annular portion to which the electrode lead is connected. The gasket is provided with an elastically deformable portion that abuts against the inner surface of the valve portion and urges the valve portion to the outside of the battery case.

A sealed battery, which is an exemplary embodiment, comprises a battery case including a bottomed cylindrical outer can and a sealing body that closes an opening of the outer can, a gasket disposed between the outer can and the sealing body, and an electrode body including an electrode and housed in the battery case. The sealing body includes a metal plate, and the metal plate has a thin portion formed in an annular shape, a valve portion having a convex shape inside the battery case, and an annular portion to which the electrode lead is connected. The gasket is provided with an elastically deformable portion that abuts against the inner surface of the valve portion and urges the valve portion to the outside of the battery case.

The present application discloses an improved aluminum cover plate of a battery, including a cover plate, a metal sheet and an electrode column. The electrode column penetrates and is arranged in rivet holes of the cover plate and the metal sheet, and is riveted with the metal sheet. A first sealing ring is arranged between a cap portion and a nail portion of the electrode column and the cover plate. A second sealing ring is arranged on an outer periphery of the nail portion of the electrode column, and the second sealing ring is clamped and arranged between the cover plate and the metal sheet. The first sealing ring and the second sealing ring are arranged separately.

The present application discloses an improved aluminum cover plate of a battery, including a cover plate, a metal sheet and an electrode column. The electrode column penetrates and is arranged in rivet holes of the cover plate and the metal sheet, and is riveted with the metal sheet. A first sealing ring is arranged between a cap portion and a nail portion of the electrode column and the cover plate. A second sealing ring is arranged on an outer periphery of the nail portion of the electrode column, and the second sealing ring is clamped and arranged between the cover plate and the metal sheet. The first sealing ring and the second sealing ring are arranged separately.

The present invention provides a large-capacity secondary battery, including: a rechargeable cell, a steel shell, a protection IC, an integrated IC, resistors, capacitors, an inductor, an LED lamp, a plastic part, a circular rigid FR-4 substrate, a metal cap, an insulation pad and an insulation heat shrink film, for integrating multiple functions of a constant voltage output, charge management and protection, and overcharge, overdischarge and overcurrent protection. Compared with the prior art, the large-capacity secondary battery of the present invention can achieve multi-functional integration of the battery, and also can save the space occupied by accessory structural parts of the battery and achieve a large capacity of the battery.

A hybrid battery component has a plastic housing filled with an electrolyte solution that is open on both sides. An electrode stack is arranged in the plastic housing and has at least one cathode and at least one anode. Two covers are provided made of a metallic material, wherein a first cover completely covers a first opening and a second cover completely covers a second opening of the plastic housing in a fluid-tight manner. The at least one anode is electrically conductively connected to the first cover by a first contact element and the at least one cathode is electrically conductively connected to the second cover by a second contact element.

A peel off assembly for exposing a safety feature comprising an aversive agent for a battery includes a first adhesive layer adhered to a base layer. Optionally, a layer comprising a colorant is disposed over and coupled to the first adhesive layer. A layer comprising a water-soluble material and an aversive agent is disposed over and coupled to the first adhesive layer. A second adhesive layer is disposed over and coupled to the layer comprising a water-soluble material. A kill strip layer is disposed between the second adhesive layer and the base layer. Optionally, a label is disposed over and coupled to the second adhesive layer. The second adhesive layer is adapted and arranged to release from the layer comprising the water-soluble material, when a peel force is applied such that the second adhesive layer and the kill strip layer are removable from the layer comprising a water-soluble material when the peel force is applied to the second adhesive layer.