Abstract: Provided are a battery cell and a battery module including the same, and more particularly, the battery cell can secure safety thereof, by forming an exhaust part in a predetermined region of a sealing part to have a sealing member thicker than the other region of the sealing part so that the exhaust part has relatively weaker adhesive strength than the sealing part not containing the exhaust part, and thus, the adhesive state of the exhaust part is broken when high pressure occurs within the cell due to overheat conditions such as overcharging or inner short circuits to cause a case of the cell to swell, thereby discharging out the substances within a pouch type secondary cell.

Abstract: A battery comprises a housing and a plurality of battery cells arranged in the housing. Each battery cell has at least one discharge valve. The battery further comprises a discharge pipe system for discharging gases released from one, a plurality of or all discharge valves of the battery cells. The discharge pipe system according to the disclosure has a plurality of separate connections for receiving the released gases and a common discharge guide into which the separate connections open and via which the released gases can be discharged out of the housing. The battery is characterized in that a protective film is arranged between the discharge valves of the battery cells and the separate connections of the discharge pipe system so that direct contact of the battery cells to the gases in the discharge pipe system is prevented.

Abstract: A lithium secondary battery is equipped with a non-recovering safety valve comprising a valve, which ruptures when the valve opens, and a valve surrounding part that surrounds the valve. The safety valve is further disposed in the valve surrounding part, and has an anti-scattering means that prevents shards, which are produced by the valve rupturing when the valve opens, from scattering outside the battery. The anti-scattering means constitutes an anti-fragmentation part of a form that prevents shards from fragmenting from the valve surrounding part.

Abstract: In a lithium ion battery provided with a cleavage valve that discharges gas in accordance with an internal pressure rise, and a discharge capacity X of the battery being 30 Ah or more and less than 100 Ah, a positive electrode composite contains a mixed active material of layered lithium nickel manganese cobalt composite oxide (NMC) and spinel lithium manganese oxide (sp-Mn). A density of the positive electrode composite is 2.4 to 2.7 g/cm3, an application quantity of the positive electrode composite is 175 to 250 g/cm2, and when a weight ratio (NMC/sp-Mn) is defined as Y, a relation of Y<?0.0062X+1.05 is satisfied. Also, a working pressure of the cleavage valve is 1.0 to 5.0 MPa when the discharge capacity X is 30 Ah or more and 40 Ah or less, and 1.0 to 4.0 MPa when X is more than 40 Ah and 80 Ah or less.

Abstract: Method for increasing safety when using bursting discs (BV), wherein the bursting disc (BV) is suitable for releasing gas in a controlled manner from battery systems (B), wherein a signal, in particular a warning signal, is generated in dependence upon the spatial change at least of one site on the surface of the bursting disc (BV).

Abstract: A safety valve (40, 140, 240, 340) formed in a portion of a case of a sealed battery includes a fracture groove portion (50, 150, 250, 350) formed in a thin portion (42, 142, 242, 342). The thin portion (42, 142, 242, 342) is formed in a horizontally long shape or a vertically long shape that has a curved outer edge portion (45, 145, 245, 345) in which at least a portion of the outer edge portion (43) is curved. This thin portion (42, 142, 242, 342) has a center straight groove portion (60, 160, 260, 360) that extends in the longer direction of the thin portion in the center portion of the thin portion, and a pair of side groove portions (70, 170, 270, 370) that are formed in both side in the longer direction of the center straight groove portion (60, 160, 260, 360) and connected to longer direction end portions (60A, 60B, 160A, 160B, 260A, 260B) of the center straight groove portion.

Abstract: The invention relates to an article comprising: a) one or more stacks of battery plates comprising one or more bipolar plates; b) located between each plate is a separator and a liquid electrolyte; further comprising one of more of the features: 1) c) the one or more stacks of battery plates having a plurality of channels passing transversely though the portion of the plates having the cathode and/or the anode deposited thereon; and d) i) one or more seals about the periphery of the channels which prevent the leakage of the liquid electrolyte into the channels, and/or posts located in one or more of the channels having on each end an overlapping portion that covers the channel and sealing surface on the outside of the monopolar plates adjacent to the holes for the transverse channels and applies pressure on the sealing surface of the monopolar plates wherein the pressure is sufficient to withstand pressures created during assembly and operation of electrochemical cells created by the stacks of battery plates;

Abstract: A plating layer 4 is formed on a surface of a battery cover 3, and a peripheral edge part 37b of a cover case 37 is arranged on an upper surface of the plating layer 4. A welding part 40 is formed at a tip part of the peripheral edge part 37b. The welding part 40 includes a melted part 41 in which the tip of the peripheral edge part 37b is melted, and an elution part 42 flowing from the tip onto the plating layer 4, and the melted part 41 and the elution part 42 are welded to the plating layer 4 in the upper surface of the plating layer 4.

Abstract: A cap plate for sealing a case housing an electrode assembly includes a cover portion that covers the electrode assembly, a support portion having a first thickness, the support portion being offset along a first direction from the cover portion, and a reinforcing portion that connects the cover portion and the support portion.

Abstract: A battery includes at least two battery cells arranged adjacent to one another and each arranged in a battery cell housing. Each battery cell has at least one battery cell terminal. The battery also includes one degasification element per battery cell. Each degasification element is arranged within the battery cell housing associated with the respective battery cell and is configured to discharge gases generated within the respective battery cell from the respective battery cell in the presence of a predetermined gas pressure. The battery also includes a cover configured to cover at least a part of the surfaces of the battery cells and cover the degasification elements of the battery cells in air-tight fashion. The cover has, in each case in a region of the degasification elements, predetermined breaking points assigned to the degasification elements.

Abstract: A battery pack includes at least one unit cell with a top end, the unit cell including a vent hole, and a pack cover over the top end of the unit cell. The pack cover includes a discharge part having a bottom member that is sloped with respect to the top end of the unit cell. The bottom member of the pack cover including an aperture corresponding to the vent hole of the unit cell.

Abstract: A hermetic battery including: a safety valve through which gas generated in the battery due to increase in pressure in the battery is discharged outside the battery, wherein the safety valve includes a first safety valve 9a, 10 which is operated at a first operating pressure, and a second safety valve 15a which is operated at a second operating pressure higher than the first operating pressure, a rate at which the gas is discharged while the second safety valve 15a is operated is higher than a rate at which the gas is discharged while the first safety valve 9a, 10 is operated, and the first safety valve 9a, 10 is closed at least while the second safety valve 15a is operated.

Abstract: The present disclosure provides a vent and a cap assembly of a power battery. The vent comprises a vent body and a vent body protective sheath having a wall portion and a hollow portion, the vent body is fixedly connected to a lower portion of the wall portion and sealing the hollow portion from below, an upper portion of the wall portion is fixedly connected to a cap plate for sealing a vent hole. The cap assembly of the power battery comprises a cap plate provided with a vent hole and an electrolyte-injection hole; a first electrode post connected to the cap plate; a second electrode post connected to the cap plate; and a vent fixedly provided to the vent hole; wherein the vent is the above vent.

Abstract: A battery pack 200 including a plurality of cells 100, in which the plurality of cells 100 are arranged so as to be oriented in the same direction, the cells 100 each have a first safety valve and a second safety valve whose operating pressure is higher than an operating pressure of the first safety valve, the first safety valve of each cell 100 is connected to a first exhaust passage 50, the second safety valve of each cell 100 is connected to a second exhaust passage 60, and the first exhaust passage 50 is spatially separated from the second exhaust passage 60.

Abstract: Disclosed is a secondary battery in which an electrode assembly is accommodated in a battery case, wherein the battery case is made of a laminate sheet including a resin layer and a metal layer and hermetically sealed through sealing of an outer circumferential surface thereof in a state of accommodating the electrode assembly, and at least one of sealing parts at the outer circumferential surface of the battery case is provided with at least two continuously formed recessed portions.

Abstract: A safety device (1) for a lithium electrochemical generator battery, including a box (100), configured to house a plurality of lithium electrochemical generators; a cover (200) arranged gas-tightly on the opening (130) of the box; an opening (120) forming a vent situated in one of the walls of the box (100) or situated in the cover (200); a conduit (300) having two openings (311, 312) where one of the openings (311) is gas-tightly connected to the opening (120) forming a vent of the box; a covering part (400) positioned gas-tightly at an opening of a wall of the compartment and the second opening (312) of the conduit, and where said covering part comprises a portion (410) adapted to tear at a threshold pressure Ps; where the walls of the box, the cover, the conduit and the covering part are secured to each other so as to ensure sealing against the gases up to a pressure above the threshold pressure Ps.

Abstract: Disclosed is a battery can for a storage battery, provided with a safety valve having a first and a second score groove portion is provided to inner and outer surface of can bottom, can body, or can lid. The first and the second score groove portion face each other, and have a first and a second score groove bottom portion, which have a radius of curvature R, respectively. The R is more than 0.20 mm and less than 1.20 mm, and a distance between the bottom portions is 0.045 to 0.150 mm. The portion, which has the safety valve, is constituted by a plated steel sheet having a steel sheet portion of C content is less than 0.040 mass %, S content is less than 0.020 mass %, and tensile strength TS is less than 400 MPa, and a plate layer formed on a surface of the steel sheet portion.

Abstract: An apparatus comprises a rechargeable battery susceptible to thermal runaway, and a metal enclosure for the battery.

Abstract: An aircraft comprises a rechargeable battery including an array of battery cells, and means for mitigating consequences of failure of the rechargeable battery due to aircraft operating cycles.

Abstract: A rechargeable battery comprises a chassis including a lower fixation plate, and a plurality of battery cells on the lower fixation plate. The lower fixation plate includes at least one flow channel positioned to collect condensate from the battery cells and move the collected condensate away from the battery cells.

Abstract: A rechargeable battery including an electrode assembly including a first and second electrode, and a separator interposed between the first and second electrode; a case receiving the electrode assembly and having a top end opening; a cap assembly sealing the top end opening of the case, the cap assembly including a first terminal part and a second terminal part outwardly protruding; and a first collector plate received inside the case and electrically connecting the first electrode and the first terminal part, wherein the first collector plate includes a first lead part including a first electrode connection part connected to the first electrode, a first terminal connection part connected to the first terminal part, and a first connecting part electrically connecting the first electrode connection part and the first terminal connection part; and a first resin part on the first lead part, the first resin part covering the first connecting part.

Abstract: A battery explosion-proof device battery explosion-proof device includes a valve body, a rupture plate, and a protecting cover. The valve body includes a base portion and a shaft portion connected with the base portion. The shaft portion may be formed with threads on an external circumferential surface thereof and with a venting passage. The rupture plate may be disposed inside a concaved portion of the base portion for sealing the venting passage. The protecting cover covers the concaved portion.

Abstract: A secondary battery has a depression having a thickness less than that of other portions of the periphery of a cap plate or a can. The depression includes a rupture section having a smallest thickness in the depression and further includes wrinkles between the rupture section and the periphery of the depression. Furthermore, the secondary battery is manufactured by a method including: a first coining step of forming the thickness of some portions of the cap plate or the can to be less than that of other peripheral portions thereof; a second coining step of forming wrinkles on the periphery of some portions where the first coining has been performed; and a third coining step of forming a rupture section having the smallest thickness in the depression on an inner side of the wrinkles.

Abstract: A safety device for a sealed cell (1) comprising alternating positive and negative electrodes respectively connected to positive and negative current output terminals (6, 7) placed in a container (2) having an end (3) that is closed by a wall. The wall of the closed end presents thinning (13) adapted to be torn by excess pressure inside the container, and the thinning is adapted, on being torn, to interrupt electrical conduction between the electrodes of one polarity and the corresponding current output terminal. The device of the invention is simple in design, is capable of operating at low pressures, and over a wide range of pressures, and acts as a circuit interrupter without decreasing the current density that flows in the electrical circuit.

Abstract: In a lid for a battery case where an annular thin portion is formed integrally with a lid main body by coining, a pair of ribs formed integrally with the lid main body so as to bulge from the lid main body and extending in a short direction of the lid main body are disposed on both sides of the annular thin portion in a long direction of the lid main body.

Abstract: A rechargeable battery includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator between the first electrode plate and the second electrode plate, a can having an opening at one side thereof through which the electrode assembly is inserted, the electrode assembly being accommodated in the inside of the can, and a cap plate that seals the opening of the can. The can includes a first vent on a first side surface of the can, and a second vent on a second side surface of the can.

Abstract: A thermal management system is provided that minimizes the effects of thermal runaway within a battery pack. The system includes a sealed battery pack enclosure configured to hold a plurality of batteries and at least one exhaust nozzle assembly. The exhaust nozzle assembly includes an exhaust nozzle that passes and directs the flow of hot gas from within the battery pack to the ambient environment during a thermal runaway event, a nozzle seal mounted within the exhaust nozzle that seals the exhaust nozzle during normal operation of the battery pack, and a nozzle seal mounting nut that holds the nozzle seal within the exhaust nozzle during normal operation and then melts during a thermal runaway event, thereby allowing the nozzle seal to be ejected through the exhaust nozzle during the event.

Abstract: A rechargeable battery including an electrode assembly having a first electrode and a second electrode; a case housing the electrode assembly; a cap plate coupled to the case; a terminal electrically connected to the electrode assembly and protruding from the cap plate; a connecting member on the cap plate, the connecting member including a body, a first short-circuit tab within the body and electrically connected to the first electrode, and a second short-circuit tab within the body and electrically connected to the second electrode; and a short-circuit member spaced from the first short-circuit tab and the second short-circuit tab.

Abstract: A nickel-metal hydride secondary battery includes: a plurality of power generating elements each having a negative plate containing hydrogen absorbing alloy; a battery case provided with partition walls and a plurality of compartments arranged adjacently on both sides of each partition wall, each of the compartments accommodating each power generating element, and the compartments allowing gas intercommunication between compartments through communication holes formed in the partition walls; and at least one of safety valves placed on the battery case, the safety valves being less in number than the number of the compartments; wherein each of the communication holes has a hole sectional area per battery module capacity in a range 0.03 to 0.30 mm2/Ah.

Abstract: The present disclosure relates to an immersion tolerant electrical energy storage system for use with electric vehicles. The energy storage system is equipped with a sealed battery unit and a sealed heat exchanger that cooperates to inhibit the intrusion of fluids and other contaminants into the system. The ability to limit intrusion of such fluids and contaminants provides improved service life for the batteries in the battery unit and components of the thermal control system.

Abstract: A power battery cover, which comprises a cover plate, a burst vent, a first terminal, a second terminal and a conducting strip; wherein, the burst vent, the first terminal and the second terminal are arranged on the cover plate, the second terminal is electrically connected to the cover plate, and the first terminal is subject to an insulated assembly with the cover plate and is electrically connected to the conducting strip; the power battery cover also comprises a tensile shrapnel which is welded to the cover plate; the tensile shrapnel is arranged under and close to the conducting strip; under the condition of overcharge of a battery, air pressure in the battery cell rises due to decomposition of the electrolyte.

Abstract: A secondary battery includes a gas release valve located at a battery container housing a power generating element, wherein: the gas release valve includes a valve disk caused to expand outward by internal pressure in the battery container; wherein a plurality of grooves are formed at the valve disk in order that a plurality of valve element pieces become fractured along the grooves when the valve disk expands due to the internal pressure; and a scatter-deterring portion is formed at the valve disk in order to prevent the fractured valve element pieces along the grooves from scattering away from the valve disk.

Abstract: A housing for a gas-tight rechargeable battery includes a proportional valve that is arranged at an opening in a housing wall. The proportional valve has a valve body that is influenced by force in the direction of its closed position and towards the interior of the housing. The proportional valve is embodied at least partially from metal such that it allows the through-flow of gas if the pressure that is prevailing in the housing exceeds a construction-dependent pressure limit value. The proportional valve is configured to be connected electrically to the cathode of the rechargeable battery. A contact element embodied at least partially from metal is configured to be connected electrically to the anode of the rechargeable battery and is arranged on the outside of the housing such that the valve body comes into physical contact with the contact element after the proportional valve has achieved a defined open position.

Abstract: A vehicle may include an electric machine, a battery adapted to provide power to the electric machine, and various embodiments of a gauge adapted to indicate venting of the battery. In one embodiment, the gauge is adapted to permanently deform or burst in response to venting of the battery to indicate venting of the battery. In another embodiment, the gauge includes an element adapted to change position in response to venting of the battery to indicate venting of the battery. In other embodiments, the gauge includes either a universal paper indicator or a chemically coated cartridge indicator in communication with the battery and adapted to change in color to indicate venting of the battery.

Abstract: A safety valve is integrally formed in a battery lid together with a peripheral wall portion by press and the like. The safety valve is formed in contact with the peripheral wall portion, at the bottom portion of the depressed portion depressed from the upper surface of the base portion of the battery lid. The upper surface of the safety valve is located below the lower surface of the base portion. When pressing force parallel to the upper surface of the battery lid is exerted on the inner peripheral surface of the peripheral wall portion while the connection tube and the like is connected, the pressing force can be supported by the entire thickness (plate thickness) of the base portion.

Abstract: A battery cell module includes a plurality of battery cells, which each have a ventilation opening. The battery cell module also includes a gas accommodation chamber which is assigned to a plurality of battery cells to at least temporarily accommodate gas which has escaped from said battery cells. The volume of the gas accommodation chamber is connected directly to the ventilation openings.

Abstract: A vehicle includes a battery and a vehicle support structure having multiple supports designed as hollow sections. The battery has at least one ventilation opening. The at least one ventilation opening in the battery is connected to the interior of at least one of the supports designed as hollow sections, and via same is connected, directly or via further supports designed as hollow sections, to the surroundings of the vehicle.

Abstract: A safety vent including: a vent 3 that allows gas generated inside a laminate type battery 2 to release to the outside, a gas permeated membrane 4 through which the gas permeates, and a housing case 5 that internally houses the vent 3 and the gas permeated membrane 4, and that is attached to a gas spout out port 24 formed in a laminated exterior casing 21 of the laminate type battery 2.

Abstract: A cylindrical lithium secondary battery includes: an electrode assembly with a center pin at a center of the electrode assembly; a can accommodating the electrode assembly; and a cap assembly coupled to a top of the can, wherein at least one end of the center pin is contoured to deform during collision between the center pin and a bottom surface of the can or the cap assembly and to absorb the impact so as to prevent the center pin from escaping the cylindrical lithium secondary battery.

Abstract: In a method tor the emergency cooling of a battery or an emergency extinguishing of the battery of a water vehicle including such a battery with a watertight containment, upon determination of an emergency, the battery is flooded by ambient water drawn from around the water vehicle.

Abstract: A secondary battery, including a bare cell provided with coupling portion, a protection circuit module provided with a circuit board, and connecting member electrically connecting the bare cell to the protection circuit module. The coupling portion has a contact recess. The protection circuit module is adapted to control the charging/discharging of the bare cell. the connecting member has a bare cell connecting portion. The bare cell connecting portion has an insertion portion inserted into the contact recess.

Abstract: The present invention provides a lithium secondary battery, comprising a cathode, an anode, a non-aqueous solution containing a lithium salt and an organic solvent, and a safety vent for removing increased internal pressure, the non-aqueous solution having the prescribed composition and the safety vent having the prescribed operational characteristics. The lithium secondary battery of the present invention can ensure its safety even when overcharged.

Abstract: A safety current interrupter device for a rechargeable cell is provided comprising a deformable material (2) adapted to deform when the temperature reaches a threshold value, a deformable membrane (3) adapted to deform under the effect of pressure and/or deformation of the deformable material (2), and an electrically conductive link member (4), adapted to break as a result of the deformation of the deformable membrane (3).

Abstract: A pressure relief device attached to an outer surface of a battery pack includes an adhesive arranged around an opening in the outer surface of the battery pack and a hat portion arranged over the opening. The hat portion includes an outer ring portion attached to the outer surface of the battery pack via the adhesive and an inner portion that is recessed from the outer surface of the battery pack to form a gap between the opening and the inner portion. A diameter of the inner portion is greater than a diameter of the opening, and a diameter of the gap is greater than the diameter of the opening.

Abstract: Provided is a pouch type secondary battery. In more detail, a pouch type secondary battery includes an electrode assembly, a pouch type battery case, a sealing part, and an exhaust part, wherein the exhaust part is formed to have adhesion weaker than that of the sealing part to release the sealing of the exhaust part when the pouch type secondary battery is swollen due to high pressure generated within the secondary battery under the conditions of overheating such as overcharging, internal short, and the like, thereby discharging materials in the pouch type secondary battery to the outside so as to secure safety of the pouch type secondary battery.

Abstract: A rechargeable battery including an electrode assembly; a case accommodating the electrode assembly; a cap plate sealing the case, the cap plate including a vent hole for discharge of gas; and a safety vent at the vent hole, wherein the safety vent includes main groove at a center thereof; and sub groove around the main groove.

Abstract: The disclosed device primarily consists of a band, ring, or other piece of shape memory polymer (SMP) or SMP composite in various embodiments that allows or disallows containment. When the SMP reaches its transition temperature (Tg) the SMP provides the means for releasing containment of the pressurized material so as to prevent ignition or explosion of hazardous material. At normal operating temperatures, the SMP is in a deformed shape maintaining an environmental seal to protect the contents of the container. When environmental conditions cause the SMP or SMP composite to exceed its Tg, specified by the operating requirements, the SMP returns to its memory shape in a controlled geometry, rather than simply melting. The return of the SMP to its memory shape causes the venting of the container in different manners depending on which embodiment is utilized.

Abstract: A rechargeable battery includes an electrode assembly, a case accommodating the electrode assembly, a cap plate sealing an opening in the case, and electrode terminals extending through the cap plate at opposite ends of the cap plate. The cap plate includes a recessed portion extending in one direction between the electrode terminals.

Abstract: A battery module includes a hermetically sealed battery cell assembly. The battery cell assembly includes a housing and an electrochemical cell disposed in the housing, wherein the housing includes a fill hole configured to receive electrolyte into the battery cell assembly. The battery cell assembly also includes a seal disposed over the fill hole and ultrasonically welded to an annular portion of the housing around the fill hole.

Abstract: A cap assembly and a secondary battery having the same which can prevent current from flowing out of the battery by preventing contact of a broken vent member with a cap. The vent member is broken due to an internal pressure of the secondary battery greater than a predetermined level. The cap assembly includes a vent member having a plurality of notches formed in a radial direction from the center of the vent member and a plurality of reinforcement parts formed between the notches. The cap assembly may include a vent member having a plurality of notches formed between two adjacent notches so that the vent member folds when the internal pressure of the secondary battery is too great.