Abstract: The present application relates to the field of battery technology, and discloses a cylindrical battery structure including a cover plate and a housing. The cover plate includes a cover plate main portion and a cover plate connecting portion fixedly connected to each other. One of an edge of the cover plate connecting portion and an edge of the housing is bent to form a bent portion, and another of the edge of the housing and the edge of the cover plate connecting portion is bent to form a hook portion. The hook portion is configured to hang on the bent portion to connect the cover plate and the housing. The cylindrical battery structure disclosed in the application has simpler connection mode, lower connection cost, and faster connection. In addition, the connection mode has lower requirements on assembly accuracy of workpieces in the housing.

Abstract: Provided is a battery module including a case, a plurality of battery cells accommodated in the case, and a flame blocking member including a plurality of exhaust passages connecting an inside and an outside of the case together, and a partition wall part disposed between the plurality of exhaust passages.

Abstract: A battery frame for providing structural support for a battery pack for retaining rows of stacked battery cells is provided. The battery frame includes a plurality of longitudinal beams and a plurality of crossbeams arranged between and connected to the longitudinal beams. The crossbeams are arranged in parallel to each other and include two outer crossbeams and an inner crossbeam. The inner crossbeam is arranged between the outer crossbeams. A retaining section for retaining one of the rows of stacked battery cells is provided between any neighboring pair of the crossbeams so that the rows of stacked battery cells and the inner crossbeam are alternately arranged between the two outer crossbeams. Each of the crossbeams is connected to the longitudinal beams by a plurality of fasteners extending in a longitudinal direction of the crossbeams through the longitudinal beams and into the crossbeams.

Abstract: A positioning member, a winding device for an electrode assembly, and a battery manufacturing device are disclosed in the present application. The positioning member may be used for being inserted into a first groove on an outer peripheral surface of the winding pin, which may be used for winding an electrode sheet and a separator. The positioning member may be provided with a second groove, which may be configured for a clamping pin to insert so as to position relative positions of the first groove and the clamping pin.

Abstract: Embodiments of this application provide an energy storage device, pertaining to the field of energy storage technology. The energy storage device includes a casing and a plurality of battery cells, where the casing has a battery compartment, the plurality of battery cells being accommodated within the battery compartment, and the battery cell includes a housing and electrode terminals, the electrode terminals being disposed on the housing. A volume of the battery compartment is denoted as V1, a sum of volumes of the housings of all the battery cells in the battery compartment is denoted as V2, and 0.4?V2/V1?0.95. This ensures that all battery cells occupy a relatively large proportion of volume within the battery compartment, thereby enhancing the space utilization of the battery compartment and enhancing the volumetric energy density of the energy storage device.

Abstract: A modular bipolar solid-state battery includes T solid-state battery modules, where T is an integer greater than one. Each of the T solid-state battery modules includes an enclosure, a first terminal arranged on a first side of the enclosure, a second terminal arranged on a second side of the enclosure opposite to the first side of the enclosure, and N solid-state battery cells arranged and interconnected in the enclosure, where N is an integer greater than one. The T solid-state battery modules are connected in at least one of series and parallel. A positive terminal of the modular bipolar solid-state battery is connected to at least one of the T solid-state battery modules. A negative terminal of the modular bipolar solid-state battery is connected to at least another one of the T solid-state battery modules.

Abstract: The present invention relates to a stack type jelly roll for a secondary battery including a cathode, an anode, and a separator. More particularly, the present invention relates to a stack type jelly roll for a secondary battery having a hybrid form of a winding stack manner and a zigzag type stack manner, and a method of manufacturing the same.

Abstract: An electrical device, having a feedthrough through a housing part which has a material thickness T of the housing of the device and is made of metal. The metal being iron, iron alloys, iron-nickel alloys, iron-nickel-cobalt alloys, KOVAR, steel, high-grade steel, aluminum, aluminum alloys, AlSiC, magnesium, magnesium alloys, titanium or titanium alloys. The housing part having at least one opening, wherein the opening receives a contact element, being a conductor consisting of a conductive material in a glass or glass ceramic material. The housing part has a collar in the region of the opening and thus forms an inner wall of the feedthrough opening having a height H, which is greater than material thickness T, wherein glazing length EL of the glass or glass ceramic material preferably corresponds to height H.

Abstract: A fluid composition which is able to exhibit elastic turbulence while pumped through a flow path which compels changes of direction of flow streamlines and comprise a solution of two or more flexible linear polymers in two categories. The first category has an average molecular weight of at least 10 MegaDaltons and the second category has an average molecular weight in a range from 0.25 to 5 MegaDaltons. The concentration of the first polymer is sufficient to enable elastic turbulence with or without the second category. The concentration of the second category is greater than that of the first. When flowing under low shear towards or away from a chamber where the flow path will induce elastic turbulence, the second category polymer reduces elastic instabilities and consequent pressure drop, thereby reducing pumping energy requirement.

Abstract: A battery pack includes: a plurality of battery cells; and a housing providing an accommodation space configured to accommodate the plurality of battery cells and comprising a side wall and a bottom wall which are in contact with each other at a corner position that faces a corner position of each of the battery cells, the housing having a spacing portion which is concavely recessed at the bottom wall to space the corner position of the battery cell apart from the corner position of the housing.

Abstract: A battery comprising a battery element housed between a battery cover and a back plate, wherein the battery element, battery cover, and back plate have a slight curvature or contour adapted to conform to a curvature or a contour of a load-bearing platform. Further, the battery comprises flexible omnidirectional leads.

Abstract: A lithium-ion battery includes a negative electrode including a current collector, a lithiophilic layer, a main body layer, and a lithiophobic layer laminated in sequence. A ratio of a discharge negative electrode capacity to a discharge positive electrode capacity of the lithium-ion battery is less than 1.

Abstract: A battery pack includes: a plurality of battery stacks provided such that the battery stacks are placed at intervals in an arrangement direction; a battery outer case in which the battery stacks are stacked; a cooler placed on a bottom face of the battery outer case; and a buffer member. The cooler includes: a plurality of cooling modules provided such that the cooling modules are placed at intervals in the arrangement direction; and a connecting portion configured to connect adjacent cooling modules in the arrangement direction to each other. In each of the cooling modules, a refrigerant passage through which refrigerant flows is formed. The buffer member is placed between the connecting portion and a protection plate placed below the cooler at an interval. A vulnerable portion is formed in a part of the connecting portion, the part being a part where the buffer member is placed.

Abstract: It is provided an electrode for a lithium-ion battery comprising an active layer comprising a linear styrene-ethylene/butylene-styrene (SEBS) copolymer as a binder which is characterized by having a melt flow rate (MFR) measured at 230° C. and 2.16 kg load from 4 to 220 g/10 min; a molecular weight of less than 100,000 g/mol, particularly from 50,000 g/mol to 100,000 g/mol and; a styrene content from 10 to 20 wt. %. It is also provided a process for the preparation of the electrode, which can be a cathode or an anode, and a Li-ion battery comprising the electrode.

Abstract: A pouch battery cell module includes a battery cell stack having first and second pouch battery cells and a thermally conductive and compliant material arranged between the battery cells. The module also includes a module container housing the first and second pouch battery cells and providing structural support therefor and including first, second, third, and fourth lateral walls, with each wall defining at least one coolant passage. Each of the first through fourth lateral walls is configured to direct out of the battery module container debris and gases emitted by at least one of the first and second pouch battery cells undergoing a thermal runaway event. The module container also includes non-structural fifth and sixth sides configured to eject to an external environment the debris and gases directed by the first through fourth lateral walls. A method of assembling a pouch battery cell module is also disclosed.

Abstract: To suppress formation of wrinkles at any corner of a joint portion of an exterior body to suppress the breakage of the exterior body, a battery includes: an electrode body that is a quadrilateral in a plan view; and an exterior body housing the electrode body therein, wherein the exterior body has a joint portion along at least three sides thereof in a circumferential end thereof, a spacer is arranged between each corner of the electrode body and an inner surface of the exterior body, and the spacer has a projection extending toward the joint portion of the exterior body.

Abstract: Provided is a nonaqueous electrolyte secondary battery separator capable of satisfactorily maintaining ion permeability even after being compressed. The nonaqueous electrolyte secondary battery separator includes a polyolefin porous film in which an average of inclination angles of major axes of voids extracted from a two-dimensional image of a cross section of the polyolefin porous film is not less than 7.0, the inclination angles being calculated from respective circumscribed rectangles of the voids, the two-dimensional image being obtained by use of SEM, and the cross section being formed by cutting the polyolefin porous film (i) along a straight line that passes a center of a surface of the polyolefin porous film and is parallel to an MD or a TD and (ii) in a direction perpendicular to the surface.

Abstract: A pouch-shaped battery case (and a pouch-shaped secondary battery including the same) includes a hidden-type gas pocket having a folded configuration such that, when gas is generated in the pouch-shaped case, the gas pocket unfolds to form a space for collecting the gas, whereby it is possible to reduce the extent of swelling of the battery when the gas is generated. The gas pocket may be configured so as not to occupy any space in a normal operating state of the battery, such that the gas pocket is unfolded to form the gas reception space only when the gas is generated, whereby it is possible to improve the efficiency of utilization of space in the battery.

Abstract: A button-type secondary battery includes an electrode assembly; a lower can in which the electrode assembly is disposed and on which a first screw thread is defined on an outer circumferential surface thereof; an upper can which is configured to cover an opening of an upper end of the lower can and on which a second screw thread corresponding to the first screw thread is defined on an inner circumferential surface thereof; and an insulator interposed between the upper can and the lower can to prevent the upper can and the lower can from being electrically short-circuited with each other, wherein an electrode tab extending from an electrode of the electrode assembly is in contact with the upper can.

Abstract: In a battery pack, an exterior case accommodates therein a core pack including battery blocks coupled to one another. Each battery cell includes battery cells held at predetermined positions by a battery holder. Each battery block includes exhaust passage passing through the battery holder. The core pack has a valve-side end surface arranged at a first end thereof, and includes a partition wall between battery blocks coupled to one another. The partition wall has a through-hole opening at a position facing the exhaust passage. In the core pack, the exhaust passage formed in each battery block and the through-hole formed in partition wall are arranged on a straight line to constitute an exhaust duct for the exhaust gas. The exhaust gas discharged from the valve-side end surface arranged at the first end passes through the exhaust duct and then is discharged from an exhaust portion to an outside.