Abstract: A flexible secondary battery including an electrode assembly that includes a first electrode layer, a second electrode layer, and a separator between the first and second electrode layers; a protection film on at least one of an upper surface or a lower surface of the electrode assembly; a fixing unit, the fixing unit fixing one end portion of each of the first electrode layer, the separator, the second electrode layer, and the protection film; and a sealing unit, the sealing unit sealing the electrode assembly and the protection film therein, wherein a melting point of the protection film is higher than a melting point of the separator.

Abstract: The invention relates to a lithium battery, the operation of which is security-protected by the interposition of resilient films. The battery is made up of a battery cell PEN, which comprises a film of an electrolyte E containing a lithium salt between a film P forming a positive electrode and a film N forming a negative electrode, or made up of a stack of battery cells PEN, said stack comprising two terminal battery cells between which are optionally placed one or more intermediate battery cells, said battery being characterized in that it comprises at least two protective films Fp made of a resilient material, at least one of the electrodes of the battery cell or of each terminal battery cell being in contact with a protective film Fp made of a resilient material.

Abstract: A reactor assembly for a redox flow battery system is disclosed. The reactor assembly may include a plurality of outer frames, a plurality of inner frames, and a rib and channel interlock system integrated in the plurality of outer frames and the plurality of inner frames. In certain embodiments, the rib and channel interlock system may be configured to create a plurality of seal systems enclosing an outer circumference of an electrolyte compartment when the plurality of outer frames and the plurality of inner frames are compressed together in a stack configuration.

Abstract: A method for producing a battery packaging material, the method including the steps of: providing a battery packaging material including a laminate in which at least a base material layer, a metal layer, and a sealant layer containing a polyolefin resin are laminated in this order; and confirming that the intensity ratio X=P/Q is in the range of 0.05 to 0.80 where P is a peak intensity P at 1650 cm?1 originating from C?O stretching vibration of the amide group of an amide-based lubricant, and Q is a peak intensity Q at 1460 cm?1 originating from bending vibration of the group —CH2— of the polyolefin resin, each of which is measured from an absorption spectrum obtained by splitting reflected light in irradiation of the surface of the sealant layer with an infrared ray, and P/Q is a ratio of the peak intensity P to the peak intensity Q.

Abstract: A packaging material for lithium-ion battery comprises a substrate layer made of a plastic film, and a first adhesive layer, a metal foil layer, an anti-corrosion layer, a second adhesive layer and a sealant layer successively laminated on one surface of the substrate layer. The plastic film has a water absorption rate of not less than about 01% to not larger than about 3% when determined by a method described in JIS K 7209:2000 and when the plastic film is subjected to a tensile test (wherein the sample of the plastic film is stored for 24 hours in an environment of 23° C. and 40% R.H.

Abstract: A cap assembly includes a current interrupt portion; a cap-up electrically connected with the current interrupt portion; and a gasket fixing the current interrupt portion and the cap-up, wherein the current interrupt portion comprises a vent portion comprising a safety vent configured to fracture when a predetermined pressure is applied thereon, and a cap-down comprising at least one hole configured to allow gas to flow in a direction toward the cap-up; and wherein an overall area of the at least one hole is about 0.12% to about 1.61% of a cross-sectional area of the gasket based on an outer diameter of the gasket.

Abstract: A degassing hole is formed in a casing in which a storage element is housed. Prior to forming the degassing hole, the casing is clamped in a region between the outer peripheral edge of the casing and the storage element where the degassing hole is to be formed such that overlapped films of the casing are pressed tightly together. By displacing the acting position of the clamping force toward the storage element while reducing the clamping force gradually toward the storage element prevent, liquid spill in a degassing process is prevented.

Abstract: In an embodiment, an electric storage device 1 includes: an electric storage element 50 having a positive electrode and a negative electrode; a non-aqueous electrolytic solution constituted by a non-aqueous solvent primarily containing cyclic ester and cyclic carbonate ester, in which an electrolyte containing lithium salt is dissolved and to which a sulfonate ester derivative whose reduction potential is higher than that of the cyclic ester and cyclic carbonate ester is added; and an outer container 70 that stores the electric storage element 50 and non-aqueous electrolytic solution. The electric storage device can offer both good low-temperature characteristics and good high-temperature reliability.

Abstract: A sensor arrangement according to an embodiment includes a substrate, and at least one sensor and a control circuit mounted on the substrate, wherein the at least one sensor and the control circuit are located on the substrate to be mountable inside a battery cell and outside the battery cell, respectively.

Abstract: A secondary battery of the present invention includes a battery element that includes a positive electrode and a negative electrode, a plurality of metal terminals that are connected to the positive electrode and the negative electrode, the metal terminals each having an outer peripheral surface provided with a resin film, and includes a lamination of at least a metal foil layer and a heat-sealable resin layer made of a polyolefin resin. A first package sealed portion, a second package sealed portion and a film sealed portion are each formed by pressing and heat sealing so as to have a thickness smaller than that of the peripheral region. The film sealed portion has a specific heat of fusion measured according to JIS K 7122 greater than that of a portion of the resin film other than the film sealed portion.

Abstract: A laminated lithium primary battery is provided which can prevent battery life deterioration caused by moisture penetration from outside and in which safety and increase of battery capacity both can be realized. A lithium primary battery 1, including: a sheet-like negative electrode 30 made of lithium; a sheet-like positive electrode 20; a sheet-like separator 40 made of cellulose; non-aqueous organic electrolytic solution; a jacket 11 made of laminate films (11a and 11b), an inside of the jacket is sealed by heat-sealing periphery of the laminate film stacked in an up-and-down direction; and an electrode assembly 10 in which the positive electrode 20 and the negative electrode 30 are stacked in the up-and-down direction having the separator 40 therebetween, the sealed jacket 11 accommodating the electrode assembly with the non-aqueous organic electrolytic solution.

Abstract: Disclosed herein is a battery cell having an electrode assembly mounted in a variable cell case in a state in which the electrode assembly is impregnated with an electrolyte, the battery cell being configured to be flexibly deformed in response to the shape of a device, in which the battery cell is mounted, wherein an uppermost end electrode and/or a lowermost end electrode of the electrode assembly in the direction in which electrodes are stacked is provided on an electrode current collector thereof, facing the inner surface of the cell case, with an electrode mixture including inert particles, 10 to 100% of the inert particles being distributed on the surface of the electrode mixture such that a concave-convex structure is formed in the surface of the electrode mixture in vertical section.

Abstract: A pouch contact type battery cell is provided. The cell includes a gap filling member that is positioned inside a plurality of cell covers that are made of an aluminum material and enclose two pouches and remove a non-contact gap G for preventing electrical insulation breakdown of the pouches and the cell covers in the contacted state with extending portions of the pouches, respectively. A battery module includes a battery cell unit in which the plurality of pouch contact type battery cells are stacked and a battery system includes the battery module. Accordingly, performance of an electric vehicle or a hybrid vehicle is improved due to a reduction in weight based on the reduction in size and volume.

Abstract: Disclosed herein is a battery cell having an electrode assembly mounted in a variable cell case in a state in which the electrode assembly is impregnated with an electrolyte, the battery cell being configured to be flexibly deformed in response to the shape of a device, in which the battery cell is mounted, wherein a coating part including inert particles is formed on at least one outer surface of the electrode assembly.

Abstract: Disclosed herein is a secondary battery having an electrode assembly mounted in a prismatic container, wherein the inside of an electrolyte injection hole formed in a base plate mounted to an open upper end of the prismatic container includes an upper part having a chamfered structure in which the diameter of the electrolyte injection hole is gradually decreased downward and a lower part having a non-chamfered structure continuously formed from the chamfered structure, and, when a sealing member is pressed into the electrolyte injection hole, the sealing member deformed into a shape corresponding to the electrolyte injection hole comes into tight contact with the chamfered structure due to shear stress between the chamfered structure and the sealing member and forms a sealed state due to frictional interaction between the non-chamfered structure and the sealing member.

Abstract: A packaging material for a cell including a laminated article having at least a coating layer, a barrier layer, and a sealant layer in the stated order, wherein: the coating layer has at least three layers including a first, second and third coating layer, and is disposed so that the first coating layer is positioned as the outermost layer and the third coating layer is positioned on the barrier-layer-side; and the first coating layer, the second coating layer, and the third coating layer are formed from a cured product of a resin composition containing a heat-curing resin and a curing accelerator so as to sufficiently exhibit a specific hardness, whereby the thickness can be reduced, exceptional chemical resistance, moldability, and inter-layer adhesion between the barrier layer and the coating layer can be obtained, and the lead time can be reduced to enable an improvement in production efficiency.

Abstract: The invention relates to a coin cell (200) comprising two cases (201, 208) designed to form a housing, an assembly of stacked electrodes placed inside the housing and comprising at least one positive electrode (203), at least one negative electrode (204, 204?, 204?), and at least one separator (202) placed in-between them. It further comprises a insulating packing tape (205) comprising an insulator basis (205a) and at least one packing flap (205b) integral with the insulator basis (205a), said insulating packing tape (205) being placed in such a way that the insulator basis (205a) is between the assembly of stacked electrodes and one of the cases (208) to avoid electrical contact between the assembly of stacked electrodes and said case (208) and the packing flap (205b) holds the assembly of stacked electrodes to form an electrode pack (209).

Abstract: A biocompatible electronic device incorporating a point-of-use-activated microbattery, the biocompatible electronic device comprising: a housing; a sealed control electronics chamber formed within the housing; control electronics contained within the sealed control electronics chamber for controlling the operation of the biocompatible electronic device; a sealed electrode chamber formed within the housing; a plurality of electrodes contained within the sealed electrode chamber and connected to the control electronics; an access port formed within the housing for providing fluid access to the interior of the sealed electrode chamber; and a removable tab for selectively sealing the access port; such that, upon removal of the removable tab, a contacting fluid can contact the electrodes and act as an electrolyte for activating the microbattery, whereby to enable the microbattery to power the control electronics for the biocompatible electronic device.

Abstract: A solid battery has a first electrode layer, second electrode layer, and solid electrolyte layer disposed therebetween. A first insulating layer is disposed on an outer perimeter of the first electrode layer; a lamination face of the first electrode layer taking a lamination direction of the first electrode layer, the solid electrolyte layer, and the second electrode layer as a normal direction is smaller than that of the solid electrolyte layer; from the lamination direction, an outer edge of the solid electrolyte layer is positioned on the first electrode layer outer perimeter and an outer edge of the first insulating layer is positioned on an outer perimeter of the solid electrolyte layer; and the first electrode layer, the first insulating layer, and the solid electrolyte layer are disposed such that the outer edge of the first insulating layer and an end of the solid electrolyte layer contact each other.

Abstract: A secondary battery includes a first electrode plate and a second electrode plate, a case accommodating the electrode plates, and a cap assembly to seal the case. The cap assembly has a short-circuit hole and a cap plate electrically connected to the first electrode plate. The battery also includes an inversion plate spaced from a short-circuit plate. The inversion plate is positioned in or over the short-circuit hole and bent toward the case. The short-circuit plate is electrically connected to the second electrode plate. When an internal pressure of the battery exceeds a value, the inversion plate moves to contact the short-circuit plate, which, in turn, breaks a fuse. A groove is included in the gap assembly adjacent the short-circuit plate. When the inversion plate moves under excessive pressure, an edge portion of the gap assembly deforms away from the short-circuit plate.

Abstract: A rechargeable battery includes: an electrode assembly having a first electrode and a second electrode; an electrode terminal electrically connected to the electrode assembly; a case that receives the electrode assembly; a cap plate at an opening of the case, the cap plate closing and sealing the case and having a vent hole configured to discharge an internal pressure of the case; and a vent module including a vent portion, the vent portion including a buffer portion configured to buffer an impact that is transferred to the vent hole, and a fracture portion that closes and seals the vent hole, wherein the fracture portion is configured to be fractured by the internal pressure.

Abstract: An electrical energy storage device for powering portable devices such as vehicles or consumer electronics includes barriers to minimize migration of thermal energy and propagation of combustion in the rare event that electrical energy storage cells fail, burst and ignite. Thermal energy absorbing materials are contained within the electrical energy storage device. Sacrificial members are provided within the thermal energy absorbing materials. In-situ channels are formed within the thermal energy absorbing materials when the sacrificial members thermally decompose.

Abstract: A high voltage battery for vehicles includes an anode tab that is divided into a first part placed near a battery cell and a second part placed near a terminal. A first part extension extends from the first part and is fixed to a lower pouch. A second part extension extends from the second part, comes into contact with the first part extension, and is fixed at an upper end thereof to an upper pouch. An cathode extension extends from a cathode tab and is spaced apart from the upper end of the second part extension. A cushion is interposed between the second part extension and the cathode extension, with a reference level of pressure formed in the cushion.

Abstract: A prismatic secondary battery includes a battery case in a prismatic shape and a battery cover which seals up an opening part of the battery case. The battery cover has a convex part which projects toward the inside of the battery case, faces an inner surface of a side wall part of the battery case, and extends continuously along the entire periphery of the side wall part. Cover thickness of a contact part of the battery cover which is in contact with the upper end of the side wall part of the battery case at a position outside the convex part is greater than ½ of cover thickness of a blockage part blocking up an opening part at a position inside the convex part and is less than the cover thickness of the blockage part.

Abstract: The present disclosure relates to thermal management in battery cells and battery modules. A thermal assembly for a battery cell includes a battery cell having a battery cell packaging and a thermal pouch formed from a continuous carbon-based thermal film. The thermal pouch is configured to contact both the battery cell packaging and one or more thermal management features of a battery module with a first side of the carbon-based thermal film. Accordingly, the first side of the carbon-based thermal film is configured to provide uninterrupted thermal pathways along the first side of the carbon-based thermal film between the battery cell packaging and the one or more thermal management features of the battery module.

Abstract: A method of sealing together two elements of a bipolar battery, the method comprising: interposing an inductive heating element between the two elements; applying a current to the inductive heating element to generate localized heat to melt material in the vicinity of the heating element to seal the two elements together.

Abstract: The present invention relates to a pouch type secondary battery. The pouch type secondary battery includes an electrode assembly, and a pouch type case in which the electrode assembly is accommodated, the pouch type case comprising a sealing part disposed on an edge thereof. The sealing part includes an inner sealing part forming a closed curve to protect the electrode assembly against the outside, and an outer sealing part defining a gas flow path between the inner and outer sealing parts to surround a peripheral portion of the inner sealing part, the outer sealing part having a safety vent.

Abstract: An electric storage device includes a container which houses an electric generating element, and a sealing plug which seals a liquid injecting hole into which an electrolyte is injected. The liquid injecting hole is provided in a bottom surface of a recessed portion provided to be recessed on one side surface of the container. The sealing plug includes an inserting portion to be inserted into the liquid injecting hole and a fitting portion to be fitted into the recessed portion. At least either a rim portion of the fitting portion or an opening rim portion of the recessed portion is provided with a plurality of plastic deformation portions.

Abstract: There is provided a highly reliable storage battery apparatus which can diagnose the status of a temperature detection unit and a cooling unit. In the storage battery apparatus comprising a battery module including one or more batteries, a plurality of temperature detection units and a cooling unit cooling the battery module, the temperature detection units measure, at least, the temperature of the cooling medium inputted to the storage battery apparatus, the temperature of the cooling medium outputted from the storage battery apparatus, and the temperature of at least one of the batteries and the battery module.

Abstract: Provided are a battery cell for a secondary battery and a method for manufacturing the same, and more particularly, a battery cell having a frame, the frame protecting the battery cell.

Abstract: A cell is provided. The cell includes a cell element including a positive electrode, a negative electrode, an electrolyte and a laminate film including an exterior layer, a metal layer, an interior layer, and a welded layer formed of the interior layer; wherein a thickness of the welded layer is larger than 5 ?m in a flat portion of the interior layer, wherein the welded layer increases in thickness from the flat portion to an end portion of the welded layer, and wherein when a thickness of the laminate film is t, a thickness of the interior layer is p and a thickness of the laminate film in the welded layer is t1, a following equation is satisfied: t×2?p×2+5<t1<t×2?5 (?m).

Abstract: A packaging material for lithium-ion battery comprises a substrate layer made of a plastic film, and a first adhesive layer, a metal foil layer, an anti-corrosion layer, a second adhesive layer and a sealant layer successively laminated on one surface of the substrate layer. The plastic film has a water absorption rate of not less than about 01% to not larger than about 3% when determined by a method described in JIS K 7209:2000 and when the plastic film is subjected to a tensile test (wherein the sample of the plastic film is stored for 24 hours in an environment of 23° C. and 40% R.H.

Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery that is durable even when force is externally applied thereto is provided. A region that is easily partly bent and a region that is not easily partly bent owing to a protective material provided in the region are intentionally formed to obtain the durable secondary battery.

Abstract: The present invention relates to an embedded frame for pouch-type secondary batteries and a secondary battery having the embedded frame. The embedded frame is provided in a pouch casing for a secondary battery so as to maintain the external shape of the pouch casing and additionally protect an electrode assembly from an external shock. The embedded frame has a rectangular shape and makes close contact with an inner surface of the pouch casing. The electrode assembly is housed in the embedded frame. A plurality of pores is formed in the embedded frame.

Abstract: A battery pack includes a battery cell, a circuit board, and a holder. The battery cell includes a battery device covered with a laminate film. The circuit board is connected to the battery cell. The holder includes a cell holder that covers the battery cell and a circuit board holder that covers the circuit board. In battery pack, the circuit board holder covering the circuit board is arranged in a space formed above a terrace portion of the battery cell covered with the cell holder.

Abstract: Provided is a positive active material for a lithium secondary battery includes a lithium transition metal composite oxide having an ?-NaFeO2-type crystal structure and represented by the composition formula of Li1+?Me1??O2 (Me is a transition metal including Co, Ni and Mn and ?>0). The positive active material contains Na in an amount of 900 ppm or more and 16000 ppm or less, or K in an amount of 1200 ppm or more and 18000 ppm or less.

Abstract: The disclosure extends to protectively coated energy storage devices, such as rechargeable batteries, and associated methods of forming the same. An energy storage device, such as a rechargeable battery, may comprise a cell including at least one electrical terminal and a circuit board electrically coupled to the at least one electrical terminal. The rechargeable battery may also include a protective coating on at least a portion of at least one of a surface of the cell and/or at least one surface of the circuit board. The protective coating may reside between the circuit board and the cell. The protective coating may comprise a moisture resistant coating that will withstand exposure to corrosive agents, including electrolytes, corrosive gases and dust.

Abstract: A fixing sheet adapted for fixing a battery to a body of an electronic apparatus is provided. The fixing sheet includes a structure layer having a first portion, a second portion and a split line. The first portion is adapted to be adhered to the battery. The second portion is structurally connected to the first portion and adapted to be adhered to the body. The split line is located at a common border of the first portion and the second portion. The first portion is capable of being forced relative to the second portion once the battery is forced relative to the body, so as to separate the first portion and the second portion along the split line. An electronic apparatus having the fixing sheet is also provided.

Abstract: A terminal attachment structure allows a terminal to be firmly and closely fixed to a terminal attachment plate in a stable state even under external vibrations or impact, and a joint surface can be flatly finished without a difference in level between the terminal and the terminal attachment plate. The terminal attachment structure has the terminal attachment plate including a polygonal groove portion and a through hole formed in a center of the groove portion, and the terminal including a flange that has the same polygonal shape as that of the groove portion, a leg part that extends from a lower surface of the flange and inserts into the through hole, and a terminal main body that extends from an upper surface of the flange. After the flange is fitted into the groove portion, the leg portion is flattened to fix the terminal to the terminal attachment plate.

Abstract: A battery container 10 includes a case member 1, one side of the case member 1 being opened, and a closing member 2 for closing the opening. Further, a material-shortage section 24 is formed near a welding section 13, the case member 1 and the closing member 2 being brought into contact with each other and welded in the welding section 13 by irradiating the welding section 13 with a welding beam. Further, the case member 1 is welded with the closing member 2 so that the welding section 13 reaches the material-shortage section 24. Note that a width of the material-shortage section 24 in a welding beam irradiation direction may be equal to or greater than one third of a fusion depth of the welding section 13.

Abstract: The present invention provides a battery pack and its fabricating method, a battery and an electronic device. The battery pack provided by the present invention comprises: an outer package, which is in a laminated form and has a conductive layer therein; and a battery cell, which has a positive electrode terminal and a negative electrode terminal and is housed in the outer package, wherein, the positive electrode terminal or the negative electrode terminal of the battery cell is electrically connected to said conductive layer at the part led out from the outer package. With the battery pack and its fabricating method provided by the present invention, the influence of electrostatic discharge can be eliminated with a more simple structure.

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the invention includes: a flat electrode assembly including a positive electrode and a negative electrode; a bottomed prismatic hollow outer can storing the flat electrode assembly and a nonaqueous electrolyte and having an opening portion; and a sealing plate sealing the opening portion of the hollow outer can. The nonaqueous electrolyte contains at least one of a lithium salt having an oxalate complex as an anion and lithium difluorophosphate (LiPF2O2). The outer surface area of a battery outer body including the hollow outer can and the sealing plate is 350 cm2 or more. With this configuration, the nonaqueous electrolyte secondary battery has excellent battery characteristics.

Abstract: A pouch type battery that can protect a metal layer exposed to ends of a pouch using a photocurable adhesive and can fix adhesion parts to the pouch, thereby achieving a simplified, automated process, instead of a manually taping process. The pouch type battery includes an electrode assembly including a first electrode plate, a second electrode plate and a separator, a pouch accommodating the electrode assembly and having adhesion parts formed by adhering opposing edges, and a photocurable adhesive applied to the adhesion parts of the pouch and sides of the pouch.

Abstract: According to one embodiment, a manufacturing apparatus for a sealed secondary battery includes a chamber, pressure reduction unit, sealer transfer unit, and welding unit. The chamber accommodates therein a battery container injected with an electrolyte through an injection hole and is hermetically closed. The pressure reduction unit reduces pressure inside the chamber. The sealer transfer unit is configured to mount a sealer for sealing the injection hole on the injection hole of the battery container in the chamber decompressed by the pressure reduction unit. The welding unit is configured to laser-weld the sealer to the battery container by applying a laser beam to the peripheral edge portion of the sealer on the battery container through a laser transmission window formed in one surface of the chamber.

Abstract: A secondary battery including: an electrode assembly including a plurality of first and second electrode plates, and a plurality of separators between the first and second electrode plates; a first electrode tab on the first electrode plate, and a second electrode tab on the second electrode plate; a case housing the electrode assembly, and the first and second electrode tabs; and first and second external lead terminals at an outer side of the case and electrically coupled to the first and second electrode tabs, respectively.

Abstract: A battery module with a battery housing includes a first conducting layer, at least one battery cell, a second conducting layer, an insulating layer, and a detecting circuit. The first conducting layer is disposed inside the battery housing. The battery cell is disposed inside the battery housing and opposite to the first conducting layer. The second conducting layer is disposed on the battery cell. The insulating layer is disposed between the first conducting layer and the second conducting layer. The first conducting layer, the second conducting layer, and the insulating layer form an internal capacitor. The detecting circuit is electrically connected with the first conducting layer and the second conducting layer for detecting a capacitance value of the internal capacitor.

Abstract: Disclosed herein is a battery cell constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case formed of a laminate sheet including a resin layer and a metal layer while the electrode assembly is connected to electrode terminals extruding out of the battery case, wherein the battery case is provided at an outer circumferential end thereof with a sealing part formed by thermally welding upper and lower parts of the laminate sheet, and a sheet-type member (‘a thermally conductive sheet’) to accelerate the dissipation of heat from the battery cell extends to the sealing part while the thermally conductive sheet partially covers the battery cell.

Abstract: One aspect of the present disclosure relates to a wound electromechanical storage device assembly including a negative electrode sheet, a plurality of negative electrode tabs which are integral to and extend from the negative electrode sheet, a positive electrode sheet, a plurality of positive electrode tabs which are integral to and extend from the positive electrode sheet, and a separator sheet disposed between the negative and positive electrode sheets, wherein the negative electrode sheet, positive electrode sheet, and separator sheet are wound around a common axis to form a plurality of windings, and wherein each winding includes one negative electrode tab and one positive electrode tab.

Abstract: A modular current interrupt device includes an electrically-conductive rupture disc, an electrically-conductive pressure disc attached to the rupture disc to form an electrical pathway. An electrically-insulating ring partitions a perimeter of the rupture disc from a perimeter of the pressure disc, and a seating element secures the electrically-insulated ring to the pressure disc. At least one of the rupture disc and electrically-insulating ring defines a conduit, whereby exposure of one side of the pressure disc to sufficient force through the conduit causes the pressure disc to separate from the rupture disc to thereby sever the electrical pathway. A low pressure current interrupt device (CID) activates at a minimal threshold internal gauge pressure in a range of, for example, between about 4 kg/cm2 and about 9 kg/cm2.

Abstract: Provided are a secondary battery case and a method for manufacturing a secondary battery. The secondary battery case includes a can accommodating an electrode assembly and a top cap sealing an upper opening of the can. The top cap includes a top plate sealing the upper opening of the can, a filling hole passing through the top plate to fill an electrolyte into the can, and a protrusion protruding from the top plate on an upper portion of the filling hole. The protrusion is press-fitted into the filling hole to seal the filling hole. According to the present invention, the protrusion may protrude from the top plate. Thus, the protrusion may be press-fitted into the filling hole and thus broken to seal the filling hole. Therefore, the member for sealing the filling hole may be integrated with the top plate to reduce manufacturing costs and simplify a manufacturing process.