A sealed battery includes a current-collecting terminal member; a gasket that electrically insulates a lid member and the current-collecting terminal member from each other; and a connection member that connects the current-collecting terminal member and an external terminal member. The connection member and the current-collecting terminal member are connected by swaging the second end of the current-collecting terminal member to an insertion hole of the connection member. The lid member has a lid-side protruded portion that compresses the gasket. The current-collecting terminal member has a terminal-side protruded portion that compresses the gasket. A gasket-side area of the lid-side protruded portion, a gasket-side area of the terminal-side protruded portion, and an area of a surface of the current-collecting terminal member which faces and contacts the gasket, except the terminal-side protruded portion, are different in size from each other.

A secondary battery including an electrode assembly; a first case that includes an electrode assembly accommodating space; and a second case that coupled to the first case, the second case facing the first case and having a convex-concave pattern.

In a feedthrough device and method of assembly thereof, a body has longitudinally spaced first and second end faces and an inner surface defining a longitudinally extending opening. A conductor extends within the opening and an insulator extends within the opening transversely intermediate the conductor and the inner surface of the body to insulate the conductor from the body. The body has at least one indentation formed longitudinally into at least one of the first and second end faces, with a portion of the inner surface of the body being displaced transversely against the insulator in correspondence with the at least one longitudinal indentation to crimp the insulator and conductor within the opening of the body and maintain a hermetic seal across the feedthrough device.

A rechargeable battery includes an electrode assembly having a first electrode and a second electrode of different polarities, a case with an opening that houses the electrode assembly, the case having a pair of opposing first side walls, each first side wall of the pair of first side walls including at least one groove extending from the opening of the case to an opposite side of the case, a cap assembly coupled to the opening of the case to seal the case, a first current collecting member and a second current collecting member inside the case, the first and second current collecting members being connected to the first electrode and the second electrode, respectively, and a first terminal and a second terminal on the cap assembly, the first and second terminals being connected to the first current collecting member and the second current collecting member, respectively.

A lead-acid battery includes an electrode plate assembly, a battery case, a positive electrode strap, a negative electrode strap, a positive electrode post, a negative electrode post, a cover, and an electrolyte solution. A negative electrode bushing provided in the cover and the negative electrode post together constitute a negative electrode terminal. A maximum value of a gap between an outer circumferential surface of the negative electrode post and an inner circumferential surface of the negative electrode bushing in the negative electrode terminal is 0.5 mm or more and 2.5 mm or less. A rib is provided in a lower part of the negative electrode bushing, and a minimum value of a protrusion height of the rib is 1.5 mm or more and 4.0 mm or less. A distance between a surface of the electrolyte solution and a lowermost portion of the negative electrode bushing is 15 mm or less.

A secondary battery includes an electrode assembly, a battery case, and a cap assembly. The electrode assembly includes first and second electrodes. The battery case accommodates the electrode assembly therein and has an opened surface. The cap assembly seals the battery case and includes first and second terminal portions coupled to the respective first and second electrodes. In the secondary battery, at least one of the first and second terminal portions is coupled to a variable member including a plurality of variable plates. Accordingly, the path and resistance of current may be varied in the secondary battery, so that it is possible to reduce or prevent generation of heat caused by overcurrent. Thus, it may be possible to reduce or prevent an explosion and fire of the battery, thereby improving the safety of the battery.

Disclosed is a secondary battery capable of preventing damage to a current interrupt device caused by generation and transmission of vibration, and thereby achieving prevention of malfunction of the current interrupt device, and improvement of quality of the secondary battery. In addition, disclosed is a method of manufacturing the secondary battery. Specifically disclosed is a secondary battery, in which a positive electrode terminal is placed on the upper face of a sealing plate, a holder is placed on the lower face of the sealing plate, and the sealing plate is joined to the positive electrode terminal and the holder by a rivet. The secondary battery includes an adhered portion for adhering the holder to the sealing plate.

An electricity storage device includes a case and two electrode terminal portions provided in a cover plate of the case. Each of the electrode terminal portions includes (a) a bolt-shaped electrode terminal that has a head portion and a threaded portion and is inserted into a corresponding terminal hole of the cover plate from the inner side of the case, (b) a ring-shaped first gasket between the electrode terminal and a circumferential portion of the corresponding terminal hole, (c) a nut that fixes the electrode terminal to the cover plate, (d) a washer between the nut and the cover plate, (e) a second gasket between the washer and the cover plate, and (f) a third gasket disposed between the head portion of the electrode terminal and the cover plate. Each of the first to third gaskets contains a fluororesin, and an acrylic sealing agent is disposed between each second gasket and a corresponding washer, between the cover plate and each second gasket, between each third gasket and the head portion of a corresponding electrode terminal, and between the cover plate and each third gasket.

The disclosure relates to a top compression plate, a secondary battery and a method for manufacturing a secondary battery. The secondary battery includes an electrode assembly, a cap plate, an electrode terminal disposed on the cap plate and an insulating member, the electrode assembly includes a main body and a tab connected to the main body, and the insulating member includes a connecting protrusion extending toward the main body. The top compression plate includes: a first surface and a second surface oppositely disposed along a thickness direction of the top compression plate, and a mounting hole extending from the second surface toward the first surface, the top compression plate is disposed between the insulating member and the main body, the first surface faces the main body, the connecting protrusion may mate with the mounting hole, and a top end surface of the connecting protrusion does not exceed the first surface.

The present application discloses a secondary battery including a cap plate, an electrode terminal, an electrode assembly, and a connection member which includes a first connecting plate connected to a tab, a second connecting plate, and a support plate, at least a part of the support plate protrudes, relative to the first connecting plate, towards a side close to a body, and the protruding part of the support plate is attached to the body; a minimum distance between the support plate and a bottom surface of the electrode assembly in a height direction of the secondary battery is a bare height H of the body on its side, a size of the body in a length direction of the secondary battery is a body length L, and the bare height H and the body length L satisfy the following relationship: 0.1H/L0.8. A vehicle is further disclosed.