A battery cell includes a housing, wherein the housing includes a first wall, the first wall includes an inner surface and an outer surface that are arranged oppositely, and a first through-hole penetrating the inner surface and the outer surface; an electrode terminal, at least partially threaded through the first through-hole; a sealing component, configured to seal a gap between the electrode terminal and the first wall; a connecting piece, arranged outside the battery cell and connected to the electrode terminal; a first insulating member, at least partially arranged between the connecting piece and the first wall to separate the connecting piece from the first wall; and a flow-guiding channel, formed between the first insulating member and the first wall, wherein the flow-guiding channel is in communication with the first through-hole.

A battery cell includes a housing, wherein the housing includes a first wall, the first wall includes an inner surface and an outer surface that are arranged oppositely, and a first through-hole penetrating the inner surface and the outer surface; an electrode terminal, at least partially threaded through the first through-hole; a sealing component, configured to seal a gap between the electrode terminal and the first wall; a connecting piece, arranged outside the battery cell and connected to the electrode terminal; a first insulating member, at least partially arranged between the connecting piece and the first wall to separate the connecting piece from the first wall; and a flow-guiding channel, formed between the first insulating member and the first wall, wherein the flow-guiding channel is in communication with the first through-hole.

A cylindrical secondary battery of one embodiment of the present disclosure comprises: an electrode body in which a positive electrode and a negative electrode are wound with a separator therebetween; an electrolytic solution; and a cylindrical housing that accommodates the electrode body and the electrolytic solution. A plurality of linear insulators extend in the short-direction of the separator and are disposed between the separator and at least one of the positive electrode and the negative electrode. The insulators do not overlap each other in the radial direction of the electrode body.

A prismatic Zn—AgO secondary twin cell battery includes: an outer cell case of prismatic shape, wherein the outer cell case has bottom surface and a top surface with a cell case cover, an electrode assembly housed inside the outer cell case. The electrode assembly is formed by stacking a positive electrode plate and a negative electrode plate covered with a separator. The cell case cover is provided on the top/upper surface with a positive electrode terminal and a negative electrode terminal which seals the battery twin cell and an internal cell wall interposed in between the positive electrode plate and the negative electrode plate. The positive electrode plate and the negative electrode plate are coupled internally by crimping and potted to avoid inter cell leakage.

A secondary battery includes: a cylindrical can; an electrode assembly in the cylindrical can with an electrolyte, the electrode assembly including a cathode and an anode; a cap assembly coupled to a top of the cylindrical can; and a plate-shaped upper insulating plate between the electrode assembly and the cap assembly. The upper insulating plate includes: a main layer having a plurality of pores extending between an upper surface and a lower surface thereof; and an auxiliary layer adhered to at least one surface of the main layer and partially melted by the electrolyte.

The present disclosure provides an efficient technique for manufacturing laminates for secondary batteries each having a separator and electrodes, which in turn enables continuous and efficient manufacturing of laminate type secondary batteries. An apparatus for manufacturing a laminate for a secondary battery of the present disclosure includes an electrode roll of a long electrode web rolled into a roll shape; a separator roll of a long separator web rolled into a roll shape; a lamination mechanism for laminating the separator web fed out from the separator roll and the electrode web fed out from the electrode roll while causing the separator web to be bent or curled to form a protruding portion extending across an entire width of the separator web so that the protruding portion is disposed so as to oppose to the electrode web; and a cutting mechanism for cutting at least the electrode web portion in a laminated article of the separator web and the electrode web at a position where the protruding portion has been provided.

The present disclosure provides an efficient technique for manufacturing laminates for secondary batteries each having a separator and electrodes, which in turn enables continuous and efficient manufacturing of laminate type secondary batteries. An apparatus for manufacturing a laminate for a secondary battery of the present disclosure includes an electrode roll of a long electrode web rolled into a roll shape; a separator roll of a long separator web rolled into a roll shape; a lamination mechanism for laminating the separator web fed out from the separator roll and the electrode web fed out from the electrode roll while causing the separator web to be bent or curled to form a protruding portion extending across an entire width of the separator web so that the protruding portion is disposed so as to oppose to the electrode web; and a cutting mechanism for cutting at least the electrode web portion in a laminated article of the separator web and the electrode web at a position where the protruding portion has been provided.

Disclosed are a cylindrical battery and a battery module. The cylindrical battery includes: a housing; a cell arranged in the housing, where the cell is provided with a first tab, and a second tab having an opposite polarity relative to the first tab, and the first tab and the second tab are located at the same end face of the cell; a cover assembly connected to the housing, where the cover assembly includes a first cover, a second cover and an insulator, the first cover and the second cover are connected to each other in an insulated manner through the insulator to form an integral structure, the first cover is connected to the first tab, and the second cover is connected to the second tab; and an insulating barrier arranged between the first tab and the second tab.

Disclosed are a cylindrical battery and a battery module. The cylindrical battery includes: a housing; a cell arranged in the housing, where the cell is provided with a first tab, and a second tab having an opposite polarity relative to the first tab, and the first tab and the second tab are located at the same end face of the cell; a cover assembly connected to the housing, where the cover assembly includes a first cover, a second cover and an insulator, the first cover and the second cover are connected to each other in an insulated manner through the insulator to form an integral structure, the first cover is connected to the first tab, and the second cover is connected to the second tab; and an insulating barrier arranged between the first tab and the second tab.

A pouch cell includes an electrode assembly and a body forming a gas headspace within the pouch. Tabs of the electrode assembly may extend through or around the body and out of the pouch. Gas from the electrode assembly may collect in the gas headspace. The body may accommodate a vent mechanism that also extends out of the pouch.