A secondary battery includes a jelly roll-type electrode assembly impregnated with an electrolyte solution; a battery case for housing the electrode assembly and the electrolyte solution; a cap assembly coupled with an upper portion of the battery case; and a reference electrode in which one end is immersed with the electrolyte solution and the other end is exposed to the outside through the battery case and the cap assembly.

Provided are a secondary battery and a battery pack including the secondary battery. A sealing plate has a positive electrode terminal attachment hole. A positive electrode terminal penetrates the positive electrode terminal attachment hole. An external conductive member is connected to a portion of the positive electrode terminal located on the battery outer side with respect to the sealing plate. The conduction path between a positive electrode plate and the positive electrode terminal is provided with a current interrupting mechanism. A first insulating member made of resin is disposed between the sealing plate and the positive electrode terminal. A second insulating member having higher thermal resistance than the first insulating member is disposed between the external conductive member and the sealing plate.

A secondary battery includes an electrode assembly having a first electrode tab protruding from a first side of the electrode assembly and a second electrode tab protruding from a second side of the electrode assembly; a case accommodating the electrode assembly and having a first opening at one side of the case and a second opening at another side of the case; a first terminal electrically coupled to the first electrode tab of the electrode assembly; a first cap plate sealing the first opening of the case and exposing the first terminal to the outside; a second terminal electrically coupled to the second electrode tab of the electrode assembly; and a second cap plate sealing the second opening of the case and exposing the second terminal to the outside, wherein the first electrode tab and the second electrode tab have bent portions.

A housing part for an electrical device, which is an electrical storage device, a sensor housing, a battery, a microbattery, or a capacitor, the housing part including: a feedthrough, the housing part or a base body which is a part of the housing part including the feedthrough, the feedthrough having at least one opening, the at least one opening having a wall with a reduced enclosure length EL.sub.red, the at least one opening configured for receiving a conductive material or a conductor in a glass material or a glass-ceramic material, the reduced enclosure length EL.sub.red being in a range of 0.05 mm to 0.6 mm, 0.1 mm to 0.5 mm, 0.1 mm to 0.4 mm, or 0.15 mm to 0.2 mm.

An electrochemical apparatus includes an electrode assembly, a packaging film, and a first tab, where the first tab is electrically connected to the electrode assembly, the packaging film includes a first packaging film and a second packaging film which are located at two sides of the first tab, the first packaging film includes a first sealing zone, the second packaging film includes a second sealing zone, and the first sealing zone and the second sealing zone are bonded to seal the electrode assembly. The first sealing zone includes a first region and a second region, the first region covers a projection of the first tab on the first sealing zone, the second region connects to the first region, and a width of the second region is less than that of the first region.

A cylindrical secondary battery includes: a cylindrical can having a circular bottom portion, a side portion extending from the bottom portion, a beading part concavely formed inwardly at one end of the side portion, and a crimping part formed by bending a distal end of the side portion; an electrode assembly in the can; and a cap assembly sealing the can. The cap assembly includes a gasket for insulation from the can, and an upper portion of the gasket in a direction away from the electrode assembly has a smaller thickness than a lower portion of the gasket.

A cylindrical secondary battery includes: a cylindrical can having a circular bottom portion, a side portion extending from the bottom portion, a beading part concavely formed inwardly at one end of the side portion, and a crimping part formed by bending a distal end of the side portion; an electrode assembly in the can; and a cap assembly sealing the can. The cap assembly includes a gasket for insulation from the can, and an upper portion of the gasket in a direction away from the electrode assembly has a smaller thickness than a lower portion of the gasket.

The embodiments of this application provide a battery cell, a battery, a power consumption device, and a battery cell manufacturing method and device, which pertain to the technical field of batteries. The battery cell includes a housing, an electrode assembly, an end cover, and a current collecting member. The housing has an opening. The electrode assembly is accommodated in the housing. The end cover covers the opening and is connected to the housing in a sealed manner. The current collecting member is accommodated in the housing and is located on a side of the electrode assembly facing the end cover, and the current collecting member is configured to be connected to the housing and the electrode assembly, so that the electrode assembly is electrically connected to the housing.

The embodiments of this application provide a battery cell, a battery, a power consumption device, and a battery cell manufacturing method and device, which pertain to the technical field of batteries. The battery cell includes a housing, an electrode assembly, an end cover, and a current collecting member. The housing has an opening. The electrode assembly is accommodated in the housing. The end cover covers the opening and is connected to the housing in a sealed manner. The current collecting member is accommodated in the housing and is located on a side of the electrode assembly facing the end cover, and the current collecting member is configured to be connected to the housing and the electrode assembly, so that the electrode assembly is electrically connected to the housing.

Provided are an electronic device and a manufacturing method therefor. The electronic device includes a first housing, a second housing, a cover plate, and a cell. The first housing includes a bottom plate and a first enclosure wall annularly disposed on a side of the bottom plate. The second housing includes a top plate and a second enclosure wall annularly disposed on a side of the top plate. The second enclosure wall is sleeved on an outer side wall of the first enclosure wall. The top plate is provided with an exit hole. The cover plate plugs the exit hole. One of a positive tab or a negative tab of the cell is connected to a part of the cover plate facing the exit hole. The other one of the positive tab or the negative tab is sandwiched between the first enclosure wall and the second enclosure wall.