An embodiment of the present application provides a battery cell, a battery, a power consumption device, and a manufacturing device and method for a battery cell. The battery cell includes a housing, an electrode assembly, an end cover assembly and a current collecting member. The electrode assembly is accommodated in the housing, and the electrode assembly includes a tab. The end cover assembly includes an end cover, an electrode terminal and an insulating member, the end cover is used to cover at an opening of the housing, the electrode terminal is mounted to the end cover, and the insulating member is located on one side of the end cover facing the electrode assembly. The current collecting member is used to connect the electrode terminal and the tab. This structure can make more space for the electrode assembly and can effectively increase the capacity of the battery cell.

An embodiment of the present application provides a battery cell, a battery, a power consumption device, and a manufacturing device and method for a battery cell. The battery cell includes a housing, an electrode assembly, an end cover assembly and a current collecting member. The electrode assembly is accommodated in the housing, and the electrode assembly includes a tab. The end cover assembly includes an end cover, an electrode terminal and an insulating member, the end cover is used to cover at an opening of the housing, the electrode terminal is mounted to the end cover, and the insulating member is located on one side of the end cover facing the electrode assembly. The current collecting member is used to connect the electrode terminal and the tab. This structure can make more space for the electrode assembly and can effectively increase the capacity of the battery cell.

The present invention concerns a fire safety arrangement for a battery. More particularly, but not exclusively, this invention concerns a fire safety arrangement for a metal ion battery, for example a lithium ion battery. A metal ion battery cell comprises a plurality of electrodes and an electrolyte encased within a housing. The housing comprises a safety valve or vent configured to allow gas build up within the housing to vent outside the housing. A fabric band surrounds the housing, such that the fabric band covers the safety valve or vent. This may allow gas to pass through the fabric band, but contain sparks generated by the battery cell within the fabric band.

The present invention concerns a fire safety arrangement for a battery. More particularly, but not exclusively, this invention concerns a fire safety arrangement for a metal ion battery, for example a lithium ion battery. A metal ion battery cell comprises a plurality of electrodes and an electrolyte encased within a housing. The housing comprises a safety valve or vent configured to allow gas build up within the housing to vent outside the housing. A fabric band surrounds the housing, such that the fabric band covers the safety valve or vent. This may allow gas to pass through the fabric band, but contain sparks generated by the battery cell within the fabric band.

A cell case of a secondary battery comprised of a can body to which a can bottom is double seamed, in which cell case, it is possible to solve the problem of the drop in cooling efficiency due to the presence of a double seam when cooling such a cell case by a cooling device or using a cooling sheet, and a battery module having a plurality of such cell cases are provided. That is, a cell case of a secondary battery having a rectangular tube-shaped can body, a can bottom double seamed to a bottom end of the can body, and a can lid double seamed to a top end of the can body, in which cell case of a secondary battery, an area ratio 51 of part of the can bottom, comprised of a portion 1 between a plane vertical to the can body a distance of 0.5 mm above a bottom end of a double seam of the can body and the can bottom and a plane vertical to the can body a distance of 1.0 mm below the bottom end of the double seam, with respect to a cross-sectional area of the can body at the bottom end of the double seam is 50% or more, and a battery module having a plurality of such cell cases are provided.

A cell case of a secondary battery comprised of a can body to which a can bottom is double seamed, in which cell case, it is possible to solve the problem of the drop in cooling efficiency due to the presence of a double seam when cooling such a cell case by a cooling device or using a cooling sheet, and a battery module having a plurality of such cell cases are provided. That is, a cell case of a secondary battery having a rectangular tube-shaped can body, a can bottom double seamed to a bottom end of the can body, and a can lid double seamed to a top end of the can body, in which cell case of a secondary battery, an area ratio 51 of part of the can bottom, comprised of a portion 1 between a plane vertical to the can body a distance of 0.5 mm above a bottom end of a double seam of the can body and the can bottom and a plane vertical to the can body a distance of 1.0 mm below the bottom end of the double seam, with respect to a cross-sectional area of the can body at the bottom end of the double seam is 50% or more, and a battery module having a plurality of such cell cases are provided.

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 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 secondary battery includes: an electrode assembly; a case accommodating the electrode assembly, the case having a bottom surface and long and short sidewalls that extend upwardly from the bottom surface; a cap plate coupled to an upper portion of the case and sealing the case; and an insulation member attached to an outer surface of the case. The insulation member includes a first layer in contact with the outer surface of the case and made of a heat-resistant material, a third layer exposed to the outside and made of a stretchable material, and a second layer between the first and third layers and made of an insulating material.

A secondary battery includes: an electrode assembly; a case accommodating the electrode assembly, the case having a bottom surface and long and short sidewalls that extend upwardly from the bottom surface; a cap plate coupled to an upper portion of the case and sealing the case; and an insulation member attached to an outer surface of the case. The insulation member includes a first layer in contact with the outer surface of the case and made of a heat-resistant material, a third layer exposed to the outside and made of a stretchable material, and a second layer between the first and third layers and made of an insulating material.