A cylindrical secondary battery may have an insulation layer formed in a region in which the top cap and the first gasket are coupled to each other. The insulation layer may include a ceramic material and a binder. The secondary battery is designed so that, when an external electrical conductive object is electrically connected directly to a positive electrode and a negative electrode of the secondary battery, an electrode tab of the secondary battery is broken as quickly as possible.

The present disclosure discloses a battery core, a battery, and a battery pack. The battery core includes: at least one core, where each core has a plurality of tabs, the plurality of tabs successively form, after being converged, a tab end-portion staggered layer region, a tab soldering region, and a pre-soldered press-fit region, parts of the plurality of tabs exposed out of the core form a tab exposure region, and a length of the tab exposed out of the core in the tab exposure region is determined according to a width of the tab end-portion staggered layer region, a width of the tab soldering region, a width of the pre-soldered press-fit region, a thickness of the core, and a tab bending angle of the tab.

A technical object to be solved according to the present disclosure is to provide a secondary battery which has reduced electrical resistance by directly connecting an electrode assembly to a can and/or a terminal without lead tabs and also has an increased battery capacity by removing lead tabs. To this end, the present disclosure provides a secondary battery comprising: a can; an electrode assembly accommodated in the can and including a first uncoated portion extending in a first direction and a second uncoated portion extending in a second direction opposite to the first direction; a first current collector plate electrically connected to the first uncoated portion of the electrode assembly; a first terminal portion coupled to the can and electrically connected to the first current collector plate; and a second terminal portion coupled to the can and electrically connected to the second uncoated portion of the electrode assembly.

A secondary battery includes: an electrode assembly including: a negative electrode plate; a positive electrode plate; and a separator interposed between the negative electrode plate and the positive electrode plate; a bond on one surface of the electrode assembly perpendicular to a surface of the separator to fix the separator; a case accommodating the electrode assembly; a negative electrode lead drawn out from the negative electrode plate; and a positive electrode lead drawn out from the positive electrode plate.

A secondary battery includes: an electrode assembly including: a negative electrode plate; a positive electrode plate; and a separator interposed between the negative electrode plate and the positive electrode plate; a bond on one surface of the electrode assembly perpendicular to a surface of the separator to fix the separator; a case accommodating the electrode assembly; a negative electrode lead drawn out from the negative electrode plate; and a positive electrode lead drawn out from the positive electrode plate.

Energy storage devices, battery cells, and batteries of the present technology may include a housing characterized by a first end and a second end opposite the first end. The batteries may include a set of electrodes located within the housing. The set of electrodes may be positioned within the interior region of the housing. The set of electrodes may include a first electrode and a second electrode. The first electrode may include a tab coupled with a surface of the housing at a distal end and coupled with the first electrode at a proximal end. The tab may be coupled with a first surface of the first electrode. A first insulating material may be applied along a second surface of the first electrode across a section corresponding to a location where the tab is coupled with the first electrode. The batteries may also include a cap at least partially contained within the interior region of the housing. The cap may be characterized by a first surface facing the set of electrodes.

Energy storage devices, battery cells, and batteries of the present technology may include a housing characterized by a first end and a second end opposite the first end. The batteries may include a set of electrodes located within the housing. The set of electrodes may be positioned within the interior region of the housing. The set of electrodes may include a first electrode and a second electrode. The first electrode may include a tab coupled with a surface of the housing at a distal end and coupled with the first electrode at a proximal end. The tab may be coupled with a first surface of the first electrode. A first insulating material may be applied along a second surface of the first electrode across a section corresponding to a location where the tab is coupled with the first electrode. The batteries may also include a cap at least partially contained within the interior region of the housing. The cap may be characterized by a first surface facing the set of electrodes.

Systems, methods, and apparatus for a structurally cross-tied energy cell are disclosed. In one or more embodiments, a battery comprises a plurality of battery cells, each comprising an anode layer and a cathode layer. The battery further comprises a plurality of anode cross ties electrically connected to at least some of the anode layers of the battery. Further, the battery comprises a plurality of cathode cross ties electrically connected to at least some of the cathode layers of the battery. In one or more embodiments, the anode cross ties and the cathode cross ties run through all of the battery cells of the battery. In at least one embodiment, the anode cross ties and the cathode cross ties are manufactured from an electrical conductor material. In some embodiments, the anode cross ties and the cathode cross ties each comprise conductive protrusions, which are located external to the battery.

Systems, methods, and apparatus for a structurally cross-tied energy cell are disclosed. In one or more embodiments, a battery comprises a plurality of battery cells, each comprising an anode layer and a cathode layer. The battery further comprises a plurality of anode cross ties electrically connected to at least some of the anode layers of the battery. Further, the battery comprises a plurality of cathode cross ties electrically connected to at least some of the cathode layers of the battery. In one or more embodiments, the anode cross ties and the cathode cross ties run through all of the battery cells of the battery. In at least one embodiment, the anode cross ties and the cathode cross ties are manufactured from an electrical conductor material. In some embodiments, the anode cross ties and the cathode cross ties each comprise conductive protrusions, which are located external to the battery.

Provided are a pouch case for a pouch type secondary battery in which one corner is in close contact with a cooling plate and a pouch type secondary battery including the same. In the pouch case, by controlling a shape relation among a forming portion formed to have a non-zero depth determined in advance at a center to accommodate one side of an electrode assembly, a receiving portion in surface contact with a side surface of the electrode assembly at the time of sealing the pouch case, and a sealing portion for sealing opposing ends of the forming portion and the electrode assembly, a size of a sealing protrusion formed after the electrode assembly is packaged through mechanical properties of a metal laminate sheet and a simplified die and punch may be minimized.