Abstract: A lithium secondary battery may include a battery can, an electrode assembly and an electrolyte received in the battery can, and a cap plate to seal the battery can. The battery can includes a first end portion and a second end portion opposite the first end portion. The lithium secondary battery is configured so at least a portion of the electrode assembly is ejected through the first end portion of the battery can when an internal pressure within the battery can is 21 kgf/cm2 or more. After the portion of the electrode assembly is ejected through the first end portion, a distance from an end portion of the electrode assembly located farthest away from the battery can to the second end portion of the battery can is greater than or equal to 1.25 times a distance between the first end portion and the second end portion of the battery can.

Abstract: The present disclosure relates to a battery including a battery can, an electrode assembly and an electrolyte received in the battery can, and a cap plate assembly to seal the battery can, a battery pack and a vehicle including the same. The battery can has a first end and a second end opposite to each other. When the electrode assembly is ejected through the first end of the battery can by an internal pressure, a distance from the end of the electrode assembly farthest away from the battery can to the second end of the battery can is 1.25 times or more as much as a distance between the first end portion and the second end portion of the battery can; and the ejected portion of the electrode assembly has a mass that is at least 25% of the total mass of the electrode assembly before the ejection.

Abstract: A battery cell according to an embodiment of the present disclosure includes an electrode assembly including a first electrode, a second electrode, and a separator interposed therebetween, a battery housing configured to receive the electrode assembly through an opening formed on one side thereof, and a housing cover configured to cover the opening and having a venting portion configured to break when internal pressure of the battery housing increases to a predetermined level or more, wherein the venting portion includes an upper notched portion provided on the upper surface of the housing cover and a lower notched portion provided on the lower surface of the housing cover, and wherein the upper notched portion and the lower notched portion are provided in a staggered state.

Abstract: A cylindrical secondary battery includes an electrode assembly provided with an electrode tab; a battery can configured to accommodate the electrode assembly; a terminal configured to pass through the battery can and insulated from the battery can; and a collector configured to electrically connect the electrode tab to the terminal. The collector may include an edge part; a terminal coupling part disposed inside the edge part and coupled to the terminal; a bridge configured to connect the edge part to the terminal coupling part; and a tab coupling part extending inward from the edge part, spaced apart from the bridge and the terminal coupling part, and coupled to the electrode tab. An inner end of the tab coupling part may have a width that gradually decreases as it approaches the terminal coupling part.

Abstract: A battery having an electrode assembly having a first uncoated portion and a second uncoated portion; a housing having an open portion formed at one side and configured to accommodate the electrode assembly through the open portion; a first current collector coupled with the first uncoated portion and located inside the housing; a cap configured to cover the open portion; and a spacer assembly having a spacer portion interposed between the first current collector and the cap and configured to prevent movement of the electrode assembly, a gasket portion interposed between the housing and the cap and configured to seal the gap between the cap and the housing, and a connection portion configured to connect the spacer portion and the gasket portion and to rotate the spacer portion when a force exceeding a criterion value is applied in a direction from the gasket portion toward the spacer portion is provided.

Abstract: A cylindrical battery cell includes a battery can accommodating a jelly-roll type electrode assembly therein, and a cap covers and closes an open end of the battery can. The cap is bonded to a tab of an electrode of the electrode assembly. The cap includes two or more electrode connecting portions, each of which protrudes into the interior of the battery can along the axial direction. The electrode connecting portions are spaced apart from one another in a circumferential direction about a center of the cap, and at least two of the electrode connecting portions are positioned on opposing sides of the center of the cap. The cap functions as both a current collector plate and the cap, thus increasing energy density. Manufacturing methods are also disclosed, as is a battery pack including the battery cell and a vehicle equipped with the battery pack.

Abstract: A door locking apparatus and an enclosure comprising the same are disclosed. The door locking apparatus comprises an operation unit 52 installed on a door 30 for opening/closing a body frame 10, and one or more locking units 80 installed in the door 30 to be capable of being inserted into or released from a locking hole 11 formed in the body frame 30. At least one of the locking units 80 comprises an unlocking restraint module 83, 84 operated by an external force and caught by the body frame 10.

Abstract: Disclosed is a damper and an opening/closing apparatus and a financial device using the same. The damper has first and second bodies mounted on fixed and rotatable objects, respectively, to perform a damping action during an end of the rotation range of opening/closing the rotatable object, abrupt operation of which is thus prevented. The first body has a damping space filled with a damping material and fixed and movable friction plates are installed in the damping space so that the movable friction plate rotates together with a rotation center shaft in a specific range. First and second interlock surfaces are positioned on opposite sides of the rotation center shaft, and first and second interlock stages are formed at a predetermined angle on both stages of the inner surface of a shaft through-hole of the movable friction plate so as to selectively contact the interlock surfaces, respectively.