Abstract: A battery outgassing filter system is provided. The system includes a battery cell, an external casing encapsulating the battery cell and including a casing vent, and an outgassing filter disposed upon the casing vent and including a filter element including a first filter element portion operable to contain a first size of particulate matter and a second filter element portion operable to contain a second size of particulate matter relatively smaller than the first size of particulate matter.

Abstract: Methods, systems, and apparatuses are described for implementing electrochemical energy storage devices using a liquefied gas electrolyte. The mechanical designs of an electrochemical device to house a liquefied gas electrolyte as well as methods of filling and sealing said device are presented.

Abstract: A battery cover is disclosed. The battery cover has a lower battery cover and an upper battery cover. The upper battery cover is matable with the lower battery cover to form a labyrinth and a plurality of battery cover sides. The labyrinth has a plurality of labyrinth cell passageways between a plurality of cell openings and a plurality of mixing areas, and the labyrinth cell passageways extend above an acid level when tipped all directions onto the battery cover sides from an upright orientation.

Abstract: In a battery cover, a sealed assembly structure of upper and lower covers of a battery case is configured in such a way that it forms a labyrinth structure that can allow an electrolyte to move upward and downward, thereby increasing an electrolyte leakage resistance of the battery case. Gas discharge holes and micro-holes are formed in the battery cover, and so the battery cover can easily discharge gas from the battery case. In the battery cover, electrolyte recovery ports are arrayed in such a way that the electrolyte can be prevented from leaking from the battery case even when the battery case is turned over or tilts to one side.

Abstract: There is provided a storage battery, including: a container having at least one cell chamber; a lid body (2) made of synthetic resin for covering a top opening of the container, the lid body having on a top surface a recessed portion that is recessed downward, the lid body having positive and negative electrode terminals disposed close to one side of the lid body and respectively at both end portions of said one side in a longitudinal direction, wherein the positive and negative electrode terminals (4) respectively have lower portions embedded in the lid body and upper portions projecting from the lid body; and an auxiliary lid (9) for closing the recessed portion.

Abstract: Disclosed herein is a secondary battery having an electrode assembly placed in a prismatic container, wherein an upper part of the inside of an electrolyte injection hole formed in a base plate mounted to an open upper end of the prismatic container is configured to have a chamfered structure in which the diameter of the electrolyte injection hole is gradually decreased downward, a lower part of the inside of the electrolyte injection hole is configured to have a non-chamfered structure, the chamfered structure is formed in an irregular shape to increase the length of an electrolyte leakage route along which an electrolyte leaks out of the secondary battery, and, when a sealing member is pressed into the electrolyte injection hole, the sealing member is deformed so as to correspond to an internal structure of the electrolyte injection hole such that the electrolyte injection hole is sealed by the sealing member.

Abstract: Disclosed herein is a secondary battery having an electrode assembly placed in a prismatic container, wherein an upper part of the inside of an electrolyte injection hole formed in a base plate mounted to an open upper end of the prismatic container is configured to have a chamfered structure in which the diameter of the electrolyte injection hole is gradually decreased downward, a lower part of the inside of the electrolyte injection hole is configured to have a non-chamfered structure, the chamfered structure is formed in an irregular shape to increase the length of an electrolyte leakage route along which an electrolyte leaks out of the secondary battery, and, when a sealing member is pressed into the electrolyte injection hole, the sealing member is deformed so as to correspond to an internal structure of the electrolyte injection hole such that the electrolyte injection hole is sealed by the sealing member.

Abstract: A lead acid storage battery according to the present invention comprises a battery container for housing a plurality of cells, a middle lid for covering the battery container, and an upper lid for covering the middle lid, wherein, on the upper surface of the middle lid, a gas discharging port for discharging the gas generated inside of the cell and an electrolyte recirculating port for recirculating the moisture to be discharged along with the gas within the cell are formed as corresponding to each cell. A plurality of exhaust chambers separated by an exhaust chamber partition are formed in a space surrounded by the middle lid and the upper lid, and a mechanism for collectively exhausting the gas discharged from the gas discharging port to the outside of the battery by interconnecting the plurality of exhaust chambers is comprised.

Abstract: A vented battery cover with a vent cover is disclosed. The vent cover may be capable of attachment to the battery at a first position and a second position using one or more first snap features and one or more second snap features. The vent cover may also provide a fluid path from a fill tube hole in the battery cover to a vent wherein the path is a labyrinth.

Abstract: A liquid retaining pressure relief valve for electrochemical battery cells is provided including a pressure regulator and a membrane vent that are mounted to the top and bottom ends of a threaded valve housing or plug. The valve housing or plug screws into the cell cover from the outside of the cell such that the membrane vent is internal to the cell. The membrane vent includes a thin gas permeable liquid repellant membrane that is molded into the body of the vent. The membrane is preferably composed of an expanded polytetraflouroethylene (ePTFE) polymer.

Abstract: An accumulator, particularly a lead accumulator, has a housing, which encloses multiple cells, and a block cover, which terminates the housing, including a bottom cover (1) and a top cover (2), between which a gas chamber for acid separation is implemented, which is divided into multiple cavities (3-8), corresponding to the number of cells, and which has at least one vent opening, a fill opening (9-14) being provided for each cell in the bottom cover (1). In order to improve an accumulator of this type, a gas outlet (15-20), which discharges into the associated cavity (3-8), is provided for each cell at a distance from the fill opening (9-14) in the bottom cover (1), its size being dimensioned so that in the event of brief tipping of the accumulator, no more acid may escape from the cell than is received by the cavity (3-8) assigned thereto (FIG. 2).

Abstract: A leak resistant automotive battery comprising a housing containing cells having filling plugs; a battery cover sealed to an opened top end of the housing and having filling holes overlying the respective cells; at least one partition wall provided in the battery cover to divide the battery cover into at least two vent chambers, each vent chamber overlying a set of the cells, to prevent flow of electrolyte from one set of cells to an adjacent set of cells when the battery is tilted; a common vent line in the battery cover connecting the spaces above the cells in each set of cells, each of the common vent line being sealed at one end and connected at its other end through a vent chamber to one end of each of parallel vent lines having at its other end a vent cap assembly which permits escape of vented gases from the cells in each set.

Abstract: A leak retardant automotive battery includes a housing containing a plurality of cells that each have a filling plug and a battery cover closing the housing above the cells. The battery cover includes a central blockage that divides the housing into two compartments that each contain a set of cells. The cells in each compartment are connected by vent holes in the battery cover that are respectively connected to associated vent cap assemblies so as to separately vent each compartment through its associated vent cap assembly.

Abstract: This invention relates to a multi-cell storage battery including a housing and, enclosing the housing in gas-tight fashion, a housing cover assembly having an upper cover panel and a lower cover panel with a degassing duct between the upper and lower cover panels which encompasses a multiple array of interconnected, mutually matched labyrinth chambers, fluidically links all cells, opens out at a forward end into at least one gas vent, and is closed off by a spark suppressor.

Abstract: An accumulator, particularly a lead accumulator, has a housing, which encloses multiple cells, and a block cover, which terminates the housing, including a bottom cover (1) and a top cover (2), between which a gas chamber for acid separation is implemented, which is divided into multiple cavities (3-8), corresponding to the number of cells, and which has at least one vent opening, a fill opening (9-14) being provided for each cell in the bottom cover (1). In order to improve an accumulator of this type, a gas outlet (15-20), which discharges into the associated cavity (3-8), is provided for each cell at a distance from the fill opening (9-14) in the bottom cover (1), its size being dimensioned so that in the event of brief tipping of the accumulator, no more acid may escape from the cell than is received by the cavity (3-8) assigned thereto (FIG. 2).

Abstract: A battery assembly system used for an electric vehicle having a configuration in which electrolyte is not released from an exhaust passage even if the electrolyte is released in a mist state from a cell. A battery assembly case is provided behind a rear seat in a cabin. An exhaust duct having a cooling fan is connected to the battery assembly case, and an air inlet port is provided to the battery assembly case at the side opposite to the portion where the exhaust duct is connected. As the cooling fan, a sirocco fan or an axial-flow fan is used. The air for forcibly cooling the battery assembly is allowed to flow in the cabin, the air inlet port, the battery assembly case, the exhaust duct, the cooling fan, and the exhaust duct in this order. A mist state electrolyte released from the cell together with the air is allowed to collide with and is attached to a cascade of the fan or the wall surface of the fan.

Abstract: Each of gas manifolds which are disposed on the side surfaces of a cell stack 10 is constituted by integrating a plate-like heat insulating member 21 disposed on the outer surface of the cell stack 10 and a heat and phosphoric acid resisting sheet member 20 joined to cover the inner and side surfaces of the heat insulating member 21.

Abstract: This invention relates to a multi-cell storage battery with a housing and, enclosing the housing in gas-tight fashion, a housing cover assembly consisting of an upper and a lower cover panel (1, 2), with a degassing duct between the upper and lower cover panels (1, 2) which duct encompasses a multiple array of interconnected, mutually matched labyrinth chambers (5), fluidically links all cells, opens out at its forward end into at least one gas vent (6), and is closed off by a spark suppressor (8).

Abstract: A battery of the type having electrolyte therein, comprising a case defining at least one electrolyte containing cell, and a primary cover bonded to the case. The primary cover has a barrel extending into the electrolyte cell. A secondary cover is bonded to the primary cover top, and includes an aperture concentric with the primary cover barrel. A baffling plug is disposed in the secondary cover aperture and extends into the barrel. The baffling plug has a lid with a bottom, an inner tubular splash guard extending away from said lid bottom, an outer splash guard concentrically spaced from said inner tubular splash guard. A retaining member formed part of the plug base retains the plug in the aperture, and seals the aperture to prevent the escape of the electrolyte.

Abstract: The accumulator comprises a container or vessel with a plurality of holes which define vent ducts for the gases developed in the accumulator. A filtering element is provided in each duct for allowing gases to pass through but preventing the electrolyte from passing through. The filtering element is constituted by a porous substrate combined with a polytetrafluoroethylene membrane.

Abstract: A cover device is adapted for use with a casing which has an open top end, and a confining wall which confines an interior that is divided into a plurality of cell compartments by partition plates. The cover device includes a lower cover body with a top wall and a surrounding wall which confines a cavity that is divided into a plurality of chambers by means of dividers. Each of the dividers has a bottom edge that is adapted to be mounted sealingly on a top edge of a respective one of the partition plates to prevent fluid communication among the cell compartments below the top wall. The top wall has a vent area that is formed with a plurality of vent holes for communicating an upper side of the top wall with the chambers, respectively, and a plurality of upwardly projecting annular lips around the vent holes, respectively. Each of the annular lips is formed with a notch unit, and has a pressure cap sleeved movably thereon for covering the respective vent hole.

Abstract: In a battery configuration including a casing having bottom, side and top surfaces, the top surface having a plurality of cell openings therein, an improved flowpath is provided for liquid electrolyte when the battery is tilted onto any one of its side surfaces. The flowpath includes a cover chamber for each cell opening defined by a substantially rectangular peripheral wall surrounding the cell opening; a cylindrical wall surrounding and substantially concentric with the cell opening and located within the substantially rectangular wall, the cylindrical wall interrupted by a relatively small circumferential gap, and a wall extending between the cylindrical wall and an adjacent side of the peripheral wall, the wall tangential to the cylindrical wall and adjacent the gap.

Abstract: The present invention is directed to a leak resistant battery cover for storage batteries. The battery cover provides a labyrinth of passages which provide a path from each cell vent to the atmospheric vent. The labyrinth is configured to provide a portion of each path above a level in which the electrolyte in the respective cells attains when the battery is tipped on any one of its sides or rotated ninety (90) degrees from an upright position. The labyrinth configuration prevents electrolyte from reaching the atmospheric vent and spilling out of the battery.

Abstract: The present invention is directed to a leak resistant battery cover for storage batteries. The battery cover sealably engages a conventional battery housing having multiple cells separated by internal housing walls. The cover has a substantially flat interior area, a portion of which extends over part of each battery cell when the cover is placed upon a battery housing. The cover includes a cell chamber for each battery cell. Drain-back/vents communicate each cell chamber with its corresponding battery cell. The drain-back/vent, whether separate or integrated allows escape of electrolyte gases from the battery cells into the corresponding battery chamber and provide for the return of liquid electrolyte back to the cells from the cell chambers. None of the cell chambers communicate directly through the battery cover to atmosphere.One or more additional chambers are provided in the cover above the central cells of the battery housing.

Abstract: The present invention is directed to a leak resistant battery cover for storage batteries. The battery cover sealably engages a conventional battery housing having multiple cells separated by internal housing walls. The cover has a substantially flat interior area, a portion of which extends over part of each battery cell when the cover is placed upon a battery housing. The cover includes a cell chamber for each battery cell. Drain-back/vents communicate each cell chamber with its corresponding battery cell. The drain-back/vent, whether separate or integrated allows escape of electrolyte gases from the battery cells into the corresponding battery chamber and provide for the return of liquid electrolyte back to the cells from the cell chambers. None of the cell chambers communicate directly through the battery cover to atmosphere.One or more additional chambers are provided in the cover above the central cells of the battery housing.

Abstract: A battery cover for a battery casing has a plurality of electrolyte containing cells, a primary cover and a secondary cover. The primary cover has a plurality of barrels arranged along a longitudinal axis and the secondary cover has a plurality of tubular elements extending downwardly and insertable in the barrels of the primary cover. Each of the tubular elements has an inner tubular member and an outer tubular member. The outer tubular member has an axially extending cutout portion which runs from its tip to the surface of the secondary cover. The battery cover also has a plurality of baffles defining a circuitous passageway for gases which are evolved in the cells of the battery to be released to an external port located on the secondary cover.

Abstract: The present invention is directed to a leak resistant battery cover for storage batteries. The battery cover provides a labyrinth of passages which provide a path from each cell vent to the atmospheric vent. The labyrinth is configured to provide a portion of each path above a level in which the electrolyte in the respective cells attains when the battery is tipped on any one of its sides or rotated ninety (90) degrees from an upright position. The labyrinth configuration prevents electrolyte from reaching the atmospheric vent and spilling out of the battery.

Abstract: A module for liquid electrolyte, electric energy storing devices. The module includes a double-walled container having an innerwall and an outerwall and a rim. The container includes a first well for holding liquid electrolyte electric energy storing devices and which is defined by the inner wall. The container also includes a first electrolyte reservoir having a shelf and a lid for covering the first reservoir. The innerwall and outerwall define a second electrolyte reservoir which surrounds the first electrolyte reservoir so that the first and second reservoirs are in nested relationship. The reservoirs are designed so that a physical puncture of the module will cause the electrolyte from the first reservoir to mix with the electrolyte from the second before it leaks from the module.

Abstract: A multiple vent plug assembly for vent ports of an electrical storage battery, the assembly includes a gang vent insert having a base wall and an upstanding peripheral rim defining a pair of side walls and a pair of end walls; an overcap including an inner rib for engagement with the upstanding peripheral rim of the gang vent insert; the insert including first and second parallel partitions extending between the pair of side walls to thereby divide the insert into three vent chambers including end chambers on either side of a center chamber, each chamber having a hollow vent barrel extending downwardly from the base wall and terminating at a drain hole.

Abstract: An exhaust structure of this invention is composed of plural exhaust structure elements which are installed in a cover and arranged in horizontal positions facing on cell chambers. The exhaust structure element is provided with a gas intake chamber, a refluxing chamber and a passage chamber. The gas intake chamber connects to the refluxing chamber through a first slit, and the refluxing chamber connects to the passage chamber through a second slit. A baffle plate is installed in the gas intake chamber, pin-shaped bodies are installed on ceilings of the refluxing chamber and the passage chamber, a refluxing hole is made on a bottom surface of the refluxing chamber, and the refluxing hole connects to a cylindrical body. Bottom surfaces of the refluxing chamber and the passage chamber are slanted toward the refluxing hole.

Abstract: A storage battery has a battery housing which includes a rectangular casing with an open top end and a plurality of cell compartments, and a cover device sealed to the open top end of the casing. The cover device includes a main cover part and a sub-cover part. The main cover part has a plate body with a top face that is formed with a plurality of adjacent rectangular chambers. Each of the chambers is aligned with a respective one of the cell compartments and is confined by first and second longitudinal walls and first and second transverse walls. Each of the chambers has a bottom formed with a vent hole, a return hole, and an upwardly projecting partition unit that confines a condensate groove in the chamber. The sub-cover part is sealed to the main cover part at top edges of the longitudinal and transverse walls and the partition unit of each of the chambers to seal a top end of the condensate groove in each of the chambers.

Abstract: A lead accumulator has a housing with a frontside, a backside, a first and second end faces, and a bottom. The housing has a plurality of cells containing acid. A lid is provided for closing the housing. The lid comprises an upper lid and a lower lid spaced from the upper lid to define a space therebetween. The space is divided by chamber walls into a plurality of chambers such that each cell has a corresponding chamber within the lid. For each cell the lid has a fill and check opening closable by a stopper. Each chamber has guides for controlling the flow of acid. The guides comprise deflecting stays and an annular stay surrounding the fill and check opening, the annular stay having a degassing and return outlet. The lid further has at least one ignition protector. The guides are designed and arranged such that, in any position of the housing, when resting on one of the side walls, acid within the chambers remains below a level above which acid flows into the ignition protector.

Abstract: Bipolar electrode is provided with a conductive support/separator perforated on a part which is free from active material with at least one opening which communicates by a gaseous environment in a battery between elements assembled in series. The opening prevents the passage of electrolyte from one conductive support/separator to another, and may include an advantageously hydrophobic material, which also contains an opening therethrough, and is arranged on at least one side of the opening. The bipolar electrodes are particularly applicable to sealed batteries.

Abstract: A cover device for a storage battery includes a sub-cover that includes a flat bottom with a plurality of first vent-holes, a top portion and a connecting wall which interconnects the flat bottom and the top portion to define a space therein. The cover device further includes a plurality of tubes, each of which having n open end which is connected to each of the first vent-holes of the flat bottom and a closed end which is plugged into a respective inlet-hole of a main cover of the storage battery so as to close the inlet-hole, and a second vent-hole which is formed in the sub-cover and which communicates the space in the sub-cover with an exterior of the same.

Abstract: A cover assembly for a multicell, lead-acid electric storage battery, which is capable of having each cell independently pressure checked for leaks by using pressure testing equipment having a pressure head tip is provided, which cover assembly comprises a primary cover member and one or more cover piece members sealed to the primary cover member and substantially defines a venting system comprising process holes for communicating with each cell, a trapping chamber communicating with each process hole, the trapping chambers being manifolded into one or more sets, and an exhaust port communicating with each set of manifolded trapping chambers and the ambient; wherein the process holes comprise a cap, an outer opening receiving the cap, an annular step and a first and second barrel in substantially coaxial alignment with the outer opening, and apertures, the annular step providing a surface upon which may be placed the pressure head tip of said pressure testing equipment for independently pressure checking the

Abstract: The subject invention provides a baffle capable of floating on the electrolyte in a battery cell, and diverts with that floating baffle any splashing electrolyte away from a gas venting device at the top of the cell, particularly during vibration of that cell.

Abstract: This invention relates a new storage battery electrolyte leak and over-replenishment preventing device characterized by composing a cover with new leak-proof plates, liquid storage troughs, U conduits and a ledge for filling holes and lowering the ledge to the place very close to the level limit line on the case so as to achieve a perfect leak and over-replenishment preventing device.

Abstract: The present invention relates to an arrangement for sealing a storage battery casing having at least one opening in the lid or cover (5) thereof, with the aid of a sealing plug (2) provided for each opening and retained in a sleeve-like fitting (1) surrounding the opening. The invention is characterized in that the sealing plug (2) includes a substantially sleeve-like outer plug part (3) and an inner plug part (4) arranged to be inserted axially into the outer plug part (3).

Abstract: An anti-spill arrangement is disclosed for a liquid electrolyte battery. The device comprises a chamber configuration or arrangement for containing electrolyte associated with a battery cell, when a battery is tipped toward or onto any one of its sides. The chamber arrangement has an inlet in communication with an associated battery cell and an outlet in communication with a vent to atmosphere. The chamber arrangement is such that regardless to which side a battery having the device is tipped, electrolyte flows from the associated battery cell into the chamber arrangement to a level which blocks further electrolyte flow through the inlet. The chamber arrangement is such that the contained level of electrolyte remains spaced from the outlet of the arrangement. Thus, this type of device precludes flow of electrolyte out of the anti-spill device when the battery is tipped to any one of its sides.

Abstract: A vent plug includes a thermophastic tubular body for insertion in an aperture in the lid of a battery. The vent plug has at its upper end an integral lid with a gas venting aperture formed therein. A removable insert is secured within the tubular body and defines a tortuous gas venting path. The insert and the body are constructed to define a space with which the gas venting aperture and the gas venting path communicate, the space accommodating a porous flame retarding body.

Abstract: A vent cap for a storage battery, which vent cap includes a base portion and a cover portion which are retained to each other to provide a gas collecting enclosure. The base portion comprises a tray and peripherally extending walls, and is divided into a plurality of cavities by at least one transversely extending rib, which cavities include a first segment having an assembly which communicates with one of the cells of the battery and a second segment which is substantially enclosed to form a holding area and which is separated from the first segment by a plurality of baffles having an aperture which permits limited communication between the first and second segments.

Abstract: A battery vent cap is presented for releasing gases from a battery container while preventing the escape of electrolyte foam. The cap comprises a strategically located reservoir containing an antifoam agent for dissipating foam attempting to escape. Further, minute amounts of agent are intermittently dispensed into the cell to reduce foaming therein.

Abstract: Means for inhibiting the escape of liquid from a liquid electrolyte battery having at least one fluid vent, wherein the battery is subject to frequent partial rotation about a horizontal axis, such as in the mounting of a power-assisted manually operated golf-bag carrying tricycle cart. The apparatus comprises a manifold and a hollow tube defining a coil substantially in a plane perpendicular to the axis of contemplated battery rotation, the coil having an outlet suspended normally directly downwardly.

Abstract: A vent system for an electric storage battery having a flame arresting capability to minimize the possibility of battery explosion from ignition of explosive gases flowing from the vent plug. The vent system includes a vent plug design having an internal restricted passage and a flange extending around the top of the vent plug which cooperates with the upper surface of the battery cover to create an explosion chamber, so that in the event the explosive gases being vented are ignited, the resulting controlled explosion extinguishes the flame. One embodiment is provided wherein the top surface of the plug is flush with the top of the battery cover. A modified vent well is required for this embodiment, whereby the vent well in the battery cover has a recessed shoulder to receive the flange portion of the vent plug. A second embodiment is also provided wherein the vent plug can be used on conventional battery cover designs, but is not flush with the top of the battery cover.

Abstract: A vent system for an electric storage battery having a flame arresting capability to minimize the possibility of battery explosion from ignition of explosive gases flowing from the vent plug. The vent system includes a vent plug design having an internal restricted passage and a flange extending around the top of the vent plug which cooperates with the upper surface of the battery cover to create an explosion chamber, so that in the event the explosive gases being vented are ignited, the resulting controlled explosion extinguishes the flame. One embodiment is provided wherein the top surface of the plug is flush with the top of the battery cover. A modified vent well is required for this embodiment, whereby the vent well in the battery cover has a recessed shoulder to receive the flange portion of the vent plug. A second embodiment is also provided wherein the vent plug can be used on conventional battery cover designs, but is not flush with the top of the battery cover.

Abstract: The present invention is directed to a leak resistant battery cover for storage batteries. The battery cover provides a labyrinth of passages which provide a path from each cell vent to the atmospheric vent. The labyrinth is configured to provide a portion of each path above a level in which the electrolyte in the respective cells attains when the battery is tipped on any one of its sides or rotated ninety (90) degrees from an upright position. The labyrinth configuration prevents electrolyte from reaching the atmospheric vent and spilling out of the battery.