WO1999048161A1 - Flooded lead acid battery with tilt-over capability - Google Patents
Flooded lead acid battery with tilt-over capability Download PDFInfo
- Publication number
- WO1999048161A1 WO1999048161A1 PCT/US1999/005784 US9905784W WO9948161A1 WO 1999048161 A1 WO1999048161 A1 WO 1999048161A1 US 9905784 W US9905784 W US 9905784W WO 9948161 A1 WO9948161 A1 WO 9948161A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery
- cover
- vent
- disc
- casing
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/308—Detachable arrangements, e.g. detachable vent plugs or plug systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/383—Flame arresting or ignition-preventing means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/394—Gas-pervious parts or elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/668—Means for preventing spilling of liquid or electrolyte, e.g. when the battery is tilted or turned over
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- This invention relates to lead acid batteries in general, and to improved battery casing cover and vent configurations which prevent corrosive acids from being spilled when the battery is tilted over on any of its four sides, or even inverted as the result of mishandling the battery, vehicle accident or the like.
- Flooded lead acid batteries (batteries with liquid electrolyte) designed for starting, lighting and ignition (SLI) experience a variety of rough handling during manufacture, storage and distribution including an occasional accidental tilting of the battery on its side, a variety of angled inclines once the battery is installed within a vehicle, as well as normal vibrations.
- SLI starting, lighting and ignition
- a well designed vent network must minimize or prevent this loss by capturing, condensing and draining the acid back into the cells.
- the vent system must also prevent or minimize spilling even when the battery is inverted, and safeguard the battery against external ignition sources.
- the vent system is incorporated into individual cell closures or, in the more modern battery designs, in vent manifold covers which extend over several or all of the cell openings.
- the vent system usually includes an electrolyte flowpath arrangement in combination with one or more vent recesses or ports in which flame arresters are seated. These flame arresters are usually in the form of glass or polypropylene "frits" which permit the passage of vapor out of the battery casing but prevent flame intrusion into the battery.
- the electrolyte flowpath is designed to minimize spilling, at least when the battery is tilted 90° to one side or the other. See, for example, commonly owned U.S. Patent No. 5,565,282.
- the battery vent cover or manifold cover is designed to cooperate with a complementary or mating surface configurations on the battery casing lid to establish an electrolyte flowpath which substantially confines the liquid electrolyte to specific areas adjacent the cell opening, and which prevents lateral spillage into adjacent cells in all battery orientations with the exception of a complete invasion.
- the flowpath arrangement in accordance with the invention is effective for battery tilt orientations 90° in any direction, i.e., where the battery rests on any of its four peripheral sides.
- a manifold vent cover which is formed on its underside with ribs and walls which, in use, are heat sealed to mating, complementary ribs and walls on the upper surface of the battery casing cover or lid, and which together define substantially closed electrolyte flow paths for each cell. Since the flowpath for each cell is substantially identical, the description of one is sufficient. Part of the flowpath for each cell is defined by a hollow, cylindrical "chimney" formed in the battery casing cover and which extends below the underside thereof. In the area below the cover, the chimney is provided with vertically offset 180° ramps or baffles, in diametrically opposed relationship.
- the ramps are in 3 fact, conical surfaces with central openings, i.e., each has a half circle cutout concentric with the longitudinal axis of the chimney. These ramps serve as splash guards and also facilitate drainage of splashed or spilled electrolyte back into the cell.
- the cooperative interfit of the splash tubes within the staggered ramps obviates the need for special "guides" inside the manifold cover which are notorious acid collectors and tend to accumulate beads of acid which will eventually find their way out of the cover.
- the underside of the manifold cover is formed with a plurality of downwardly extending splash guard tubes which are sized and located to extend into the chimneys on the battery cover.
- These tubes are open at their lower ends and closed by the manifold cover at their upper ends.
- the tube radius approximates the radius of the opening in the upper ramp so that, when the manifold cover is sealed to the battery cover, the tips of the tubes lie concentrically within the upper ramp.
- any electrolyte from a given cell must follow a somewhat circuitous path around the lower ramp, upper ramp, and then upwardly around the splash tubes.
- the very nature of the double ramp arrangement provides splash protection by deflecting the electrolyte back into the cell.
- each chimney On the upper side of the battery casing cover, vertical walls define a rectangular chamber around each chimney, each chamber having a pair of side walls and a pair of end walls.
- the chimney extends above the battery cover surface to the same extent as the chamber peripheral walls, and is open at the top.
- a circumferential gap is formed in the chimney wall so that, when the manifold cover is sealed to the battery cover, the vertically oriented, circumferential gap is the only opening by which electrolyte can escape the chimney and pass into the rectangular chamber between the battery casing lid and the manifold cover.
- manifold cover has complementary or mating ribs so that the chamber for each cell is closed (including the upper end of the respective chimney), except as noted below, when the manifold cover is sealed to the battery casing cover.
- the ribs on the underside of the manifold cover which define part of the sidewalls of the chamber each have a notch located between the end walls, permitting vapor to escape from any one or more of the cells to the vent ports at opposite ends of the manifold cover.
- vapor within the cells can escape by following a flowpath up through the chimneys and through the individual chambers in the manifold cover by means of the notches in the chamber sidewalls, and then passing through the vent ports containing the flame arrester frits.
- the chimney and splash tube arrangement in conjunction with the chamber arrangement within the manifold cover will confine the electrolyte to the individual cells and will facilitate quick drainage of electrolyte back into the battery.
- the "floor" of the chamber in the manifold cover is tilted back toward the cell opening.
- the flowpath arrangement will also confine the electrolyte within the individual cell chamber areas in the event the battery is tilted over onto any one of its four sides.
- the vapor passage notches in the chamber side walls are located at strategic positions in the chamber side walls such that it is not likely that any electrolyte will reach those notches and pass between the adjacent chambers when the battery is tilted over.
- the frit dimensions be substantially the same as conventional frits so that no change in the battery is required to accommodate the frits.
- the porous PTFE frit in accordance with this invention can be used wherever battery vents are currently located in individual threaded or push-in vent caps, in removable gang vent covers, or in manifold covers heat sealed to the battery cover.
- a number of manufacturing techniques for sealing the PTFE discs within existing battery vents have proven successful.
- a slab of silicone grease is applied to the periphery of the PTFE disc.
- the upper rim of the polypropylene wall which defines the vent opening is crimped over the upper annular edge of the disc, utilizing applied heat.
- Another technique is to mold the PTFE disc with a polypropylene skin or ring surrounding at least the side wall of the disc. This allows the disc assembly to be conventionally and easily welded to the polypropylene vent material.
- the frit/ring assembly can be sonically welded to the cover. Further in this regard, it may well be possible to mold the polypropylene battery cover manifold around the PTFE disc, but this arrangement would be more costly due to the requirement for new mold designs.
- Another sealing technique is to mold the PTFE disc so as to have an outer diameter establishing an interference fit within the vent cavity. While this technique may be viable in many situations, the temperature range of the battery environment must be maintained below 190°F. to avoid relaxation of the polypropylene which would otherwise break the seal.
- the present invention relates to 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 for liquid electrolyte when the battery is tilted onto any one of its side surfaces, the flowpath comprising a cover chamber for each cell opening defined by a substantially rectangular peripheral wall surrounding the cell opening; a 6 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; 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.
- the invention in another aspect, relates to a flooded lead acid battery including a casing having a bottom and four side walls sealed by a casing cover, the casing cover having cell openings therein communicating with individual cells within the casing; a manifold cover sealed over the cell openings in the casing cover; and means formed in the casing cover and manifold cover for preventing escape of liquid electrolyte when the battery is tilted onto any one of the four side walls.
- the invention in another aspect, relates to a flooded lead acid battery which includes a casing enclosing a plurality of cells having liquid electrolyte therein and a cover incorporating negative and positive terminals and having a plurality of vent holes, the vent holes covered by at least one closure having a vent cavity therein, the improvement comprising a porous polytetrafluorethylene disc having hydrophobic properties sealed within said vent cavity.
- FIGURE 1 is a perspective view of a battery incorporating a vent manifold cover and anti-spill frit;
- FIGURE 2 is a perspective view of the battery cover removed from the battery shown in Figure 1 , and with the manifold cover removed from the battery cover;
- FIGURE 3 is a side elevation of the manifold cover shown in Figures 1 and 2; 7
- FIGURE 4 is a perspective view similar to Figure 2 but illustrating a recessed manifold cover in a flat battery cover arrangement
- FIGURE 5 is a side elevation of the battery cover illustrated in Figure 4.
- FIGURE 6 is a partial section of the cover shown in Figure 5;
- FIGURE 6 A is a partial plan view of the battery cover shown in Figures 4 and 5, showing a single cell chamber and cell opening;
- FIGURE 7 illustrates schematically the electrolyte flowpath for one vent in a manifold cover in accordance with this invention when the battery is tilted onto a first of its four sides;
- FIGURE 8 is similar to Figure 5 but illustrates the flowpath when the battery is tilted onto a second of its four sides;
- FIGURE 9 is similar to Figure 5 but illustrates the flowpath when the battery is tilted onto a third of its four sides;
- FIGURE 10 is also similar to Figure 5 but illustrates the flowpath when the battery is tilted onto a fourth of its four sides;
- FIGURES 11 A and 1 IB illustrate one technique for sealing an anti-spill frit within a vent cavity in a manifold cover
- FIGURE 12A is a perspective view of a anti-spill frit in accordance with another exemplary embodiment of the invention.
- FIGURE 12B is a partial section view illustrating the manner in which a frit as shown in Figure 12A can be secured within a manifold cover vent cavity; 8
- FIGURES 13 A and 13B illustrate another assembly and sealing technique for an anti- spill frit in accordance with the invention
- FIGURES 14A through 14D illustrate still another manner of assembly of an anti-spill frit in a manifold cover in accordance with the invention
- FIGURE 15 is an exploded view of an individual vent cap incorporating a frit in accordance with the invention.
- FIGURE 16 is a bottom plan view of a gang vent cover incorporating a frit in accordance with the invention.
- a maintenance-free battery 10 includes a casing 12 in which are located the individual cells and liquid electrolyte, and a cover or lid 14 which is typically heat sealed to the casing.
- Lead posts 16, 18 provide positive and negative terminals, respectively, which project from the cover and which are adapted to receive cable connections in a conventional manner.
- a manifold vent cover 20 overlies the cell openings 22 (shown in phantom in Figure 1 but see also Figure 2) formed in the cover. In maintenance free batteries, the manifold cover 20 is heat sealed to the battery cover 14, i.e., the manifold cover 20 is not intended to be removed during the useful life of the battery.
- the underside of the manifold cover 20 in accordance with this invention is formed with a plurality of hollow manifold or splash tubes 23 which extend down into the cell openings or chimneys 22 formed in the battery casing cover.
- the chimneys 22 on the battery casing cover are defined in part by upstanding cylindrical walls 24, each discontinuous in the circumferential direction, thus providing a circumferential gap 26.
- each chimney is surrounded by a generally rectangular chamber area as defined primarily by upstanding, parallel ribs or walls 28 of equal height with walls 24, along with end walls 30, 32.
- Each of the chimney walls 24 is also connected to an adjacent wall 28 by a transverse wall section 34, also of equal height and 9 tangent to the wall 24.
- transverse wall section 34 is parallel to the chamber end walls 30, 32, and that wall section 34 lies on the opposite side of the chimney from the nearest end wall 30.
- This arrangement in cooperation with a similar arrangement on the underside of the manifold cover 20, establishes a desired flow pattern for the electrolyte in each cell, in the event of battery tilt or turn over.
- cylindrical walls 24' mate with similar walls 24; transverse wall sections 34' mate with similar sections 34; and ribs 28' mate with similar ribs 28 to form substantially closed chambers for each cell vent when the manifold is heat sealed to the battery casing cover.
- gaps 26 become closed-periphery apertures when the manifold 20 is sealed to the battery casing cover, and gaps 29 in the ribs 28' also form closed periphery openings in the combined ribs 28, 28 '.
- vent recesses or ports 36 are integrally formed which are connected to atmosphere by passages 38 internal to the manifold. These passages open at slits 40 at opposite ends of the manifold cover 20.
- porous PTFE discs or frits 42 may be located and sealed as described in greater detail below. While conventional polypropylene or other frits may be employed with the preferred electrolyte path, PTFE frits are preferred to insure spillage protection in the event the battery is inverted, e.g., during a vehicle accident. Gaps or notches 29 in the walls 28' permit vapor to pass between the cells and eventually to the vent ports 36 and passages 38.
- the battery casing cover is also formed with cell vent slots 46, one for each of the cells. These vent slots permit air and/or vapor to escape during initial filling of the cells and before the manifold cover is sealed in place. They also provide a visual mechanism by which the electrolyte levels in each of the cells can be equalized. When the manifold cover is heat sealed in place, the slots are closed.
- FIG 4 illustrates an alternative battery casing cover and manifold cover configuration where the battery cover design is such that the manifold cover, when in place, lies flush with the remaining upper surface portion of the battery cover in the area of terminals 116. 118.
- the battery cover design is such that the manifold cover, when in place, lies flush with the remaining upper surface portion of the battery cover in the area of terminals 116. 118.
- the electrolyte flowpath configuration and the arrangement of vent ports at opposite ends of the manifold cover are 10 substantially identical and need not be described in detail.
- similar reference numerals have been used to designate corresponding components but with the prefix "1" added in Figures 3 and 4, where appropriate.
- frits 142 are enclosed within a polypropylene sleeve or skin 43, the purpose for which will be described further herein.
- each chimney 122 is seen in greater detail.
- baffles or "half moon" ramps 48, 50 each of which extends substantially 180°, but which are offset in a vertical direction.
- Each baffle has a tapered conical surface 52, 54, respectively, which extends radially inwardly toward the center axis of the chimney.
- Each baffle has a half circle cutout 56, 58 concentric with the center axis and of the same or different radius.
- baffles or ramps provide a flow obstacle to liquid trying to escape a respective cell, but also promote splashback, and facilitate drainage of acid back into the cell without beading and accumulating due to the sharp angular drop of the baffles.
- the ramps 48, 50 tend to "lock” in place, obviating the need for any additional interior guides.
- FIG. 7 shows cell cavity A within the cover 14, when the battery as shown in Figure 1 is tilted onto side S, and with the liquid electrolyte stabilized. Electrolyte will flow out of the cell opening 22 and into the chamber defined by walls 28, 30, 32. Notice that electrolyte is free to flow through the gap 26 into an area outside the wall 24 but constrained by walls 28, 30. The electrolyte will simply seek its own level - approximately at the center of chimney 22, and will not spill into the remainder of the chamber. In this way, only vapor is free to transfer between chambers, via gaps or notches 29.
- Figure 8 illustrates the cell orientation when the battery is tilted over onto side S 3 .
- the electrolyte fills the cell opening, even above the center of the opening, but does not escape through the notch 26, and therefore remains confined within the cylindrical wall 24.
- FIG 9 illustrates the battery tilted onto side S,.
- electrolyte flows into the chamber and through the gap 26 into the area to the left of the wall 24, seeking its own level which is below the maximum height of the wall 24, so that the liquid does not flow into the chamber.
- wall 34 prevents the electrolyte from escaping into the chamber area.
- FIG 10 illustrates the battery tilted onto side S 4 .
- the electrolyte flows into the chamber through the gap 26, seeking its own level which is just above the center of the vent opening but confined by the end wall and parallel wall 28.
- the electrolyte or acid is entrapped so that no electrolyte reaches the vent port 36 (and hence the frit), and no electrolyte passes through the appropriately located openings 29 into the adjacent cell area.
- the preferred PTFE material for the frits 42, 142 is available from Performance Plastics Products, a division of EGC Corporation, under the trade name PermeonTM. The material could be specified, however, and supplied under other trade names as well. This is an unfilled, 12 hydrophobic and relatively rigid PTFE material with an open structure which allows consistent permeation of vapors but not liquids.
- PermeonTM The properties of the PermeonTM material are as follows:
- the leak rate of liquid through the frit 42 or 142 can be varied to suit customer specifications by choice of particle size and frit dimensions, particularly thickness.
- the frit material is engineered to prevent any liquid leak when the frit is located under a 10 inch high column of water (average SLI battery height) for a period of 24 hours.
- the frit may have a thickness of from about 0.080 to about 0.225 inch and a diameter of about 0.5 inch to 1.0 inch. In other words, no liquid electrolyte will leak out of the battery through the frits 42 for at least 24 hours when the battery is fully inverted.
- the frit 42 in accordance with this invention also provides the necessary flame intrusion prevention of current polypropylene frits. In fact, the frits of this invention may be superior in this respect in light of the high temperature assistance of the porous PTFE.
- frit in accordance with this invention requires no change to existing battery and manifold covers, nor to current screw-in or push-in vent caps, it is easily inco ⁇ orated simply by customer preference, at little added cost.
- FIGs 11 A, 1 IB show the manner in which the frits 42 are secured within the vent cavities or ports 36, each of which is defined in part by an upstanding cylindrical wall 62.
- An internal radial shoulder 64 provides edge support for the frit, and note again the internal 13 passage 38 terminating at slit 40. Because the PTFE frit 42 is not compatible with polypropylene (at least in terms of welding or heat sealing), typically used for the battery casing 12, cover 14 and manifold 20, it was necessary to develop new retention/sealing techniques to insure that the frit is properly and effectively sealed within the vent opening to prevent liquid leakage around the frit.
- the approach in Figures 11 A and 1 IB includes application of a chemically inert (up to 500 °F.) silicone grease 66 to the peripheral edge of the PTFE disc 42, followed by crimping the upper annular edge of wall 62 radially inwardly about the upper edge of the disc 42 with the application of heat at a temperature which softens the material sufficiently to enable it to be uniformly crimped about the upper edge of the frit.
- a porous PTFE frit 68 is molded to include an annular outer ring or "skin" 70 of polypropylene (similar to frit 42' in Figure 4).
- the frit peripheral wall 72 may taper downwardly and inwardly, and the ring 70 conforms to the taper on its interior side but has a straight outer surface which matches the internal surface of the vent cavity wall 74.
- the skin 70 also has an upper radial flange or edge 76 which overlaps the edge of the frit. The latter is seated on the radial shoulder 78 in the vent cavity.
- the assembly is easily welded and sealed to the polypropylene cover inco ⁇ orating the vent cavity.
- a hot weld seal can be formed at the top of the frit.
- a sonic seal can be implemented where the frit sleeve or skin 70 engages the shoulder 78 on the vent cavity wall.
- FIGS. 13A and 13B another sealing technique is shown which involves compression fitting a porous PTFE frit 80 into the vent cavity as defined by peripheral wall 82 and radial shoulder 84. More specifically, an oversized, right-cylinder shaped frit 80 is molded with an interference fit, i.e., with a diameter 0.005" - 0.010" over the inside diameter of the cylindrical vent cavity wall 82 so that when the frit is pressed into the vent cavity, it is under peripheral compression and thus sealed. While this method has proven effective, the 14 temperature range of the battery must be maintained below 190°F. to avoid relaxation of the polypropylene vent cavity and consequent breaking of the seal.
- FIGs 14A-D illustrate still another viable sealing technique.
- the PTFE frit 86 is seated within the cylindrical vent cavity as defined by peripheral wall 88 (Fig. 13 A).
- a hot melt tool 90 (at about 680 °F.) is applied to the upper edge of the frit (Fig. 13B), melting a localized region of the frit and transferring heat to the polypropylene wall 88. The latter melts at 293 °F.
- the melted PTFE will flow over and onto the polypropylene material, with some blending of the materials to a thickness of about .005-.010 inch, indicated at 92.
- This technique has proven successful despite the apparent incompatibility of the materials.
- a heat sealing horn 94 is illustrated which is effective to seal the entire 360° frit/wall interface, using the annular tip 96.
- the subject invention is not limited to use of a porous PTFE disc or frit in a battery cell manifold cover. It is equally applicable to other battery types, such as those which utilize, for example, individual screw-on or push-in plugs.
- An example is shown in Figure 15 where an individual vent plug 98 of otherwise conventional construction, includes a threaded shank 100 and a bolt-like head 102, formed to include a vent cavity 104 which typically receives a polypropylene frit (not shown).
- a porous PTFE frit 106 is seated within the cavity and sealed by one of the techniques described above.
- a cap 108 may be employed to protect the frit, noting that the cavity, above the frit, is vented to atmosphere.
- FIG 16 illustrates still another application for the porous PTFE frit.
- a rectangular-shaped frit 110 is seated within a similarly shaped cavity defined by wall 112 on the underside of a battery gang vent cover 114.
- the latter is described in more detail in commonly owned U.S. Patent No. 5,565,282. This merely exemplifies the adaptability of the present invention to different already existing battery types.
- the frit is also useful in batteries other than SLI batteries including marine and military batteries. 15
- frit or disc in accordance with this invention can be used without also having a complex electrolyte flow path as described herein, to at least prevent spillage through the flame arresters when the battery is inverted.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Filling, Topping-Up Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI9909654-4A BR9909654B1 (en) | 1998-03-17 | 1999-03-17 | Lead-acid battery with overturn capability. |
CA002324232A CA2324232C (en) | 1998-03-17 | 1999-03-17 | Flooded lead acid battery with tilt-over capability |
PL99343106A PL194346B1 (en) | 1998-03-17 | 1999-03-17 | Flooded lead acid battery with tilt-over capability |
EP99911443A EP1072059A4 (en) | 1998-03-17 | 1999-03-17 | Flooded lead acid battery with tilt-over capability |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/042,720 | 1998-03-17 | ||
US09/042,720 US6110617A (en) | 1998-03-17 | 1998-03-17 | Flooded lead acid battery with roll-over capability |
US09/102,902 US6045940A (en) | 1998-06-23 | 1998-06-23 | Flooded lead acid battery with tilt-over capability |
US09/102,902 | 1998-06-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999048161A1 true WO1999048161A1 (en) | 1999-09-23 |
Family
ID=26719548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/005784 WO1999048161A1 (en) | 1998-03-17 | 1999-03-17 | Flooded lead acid battery with tilt-over capability |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1072059A4 (en) |
AR (1) | AR014737A1 (en) |
BR (1) | BR9909654B1 (en) |
CA (1) | CA2324232C (en) |
PL (1) | PL194346B1 (en) |
WO (1) | WO1999048161A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1298739A1 (en) * | 2001-09-25 | 2003-04-02 | Exide Industries Ltd. | A vented-type leak-resistant motor cycle battery |
EP1589596A2 (en) * | 2004-04-21 | 2005-10-26 | Biasin SRL | Cover for accumulator containers. |
EP1636863A2 (en) * | 2003-05-12 | 2006-03-22 | Compagnie Plastic Omnium | Battery vent and pressure blowout relief frit |
EP2698843A1 (en) * | 2012-08-14 | 2014-02-19 | Camel Group Huazhong Branch Co., Ltd. | Storage battery with venting system which has combined filters |
US11047508B2 (en) | 2017-03-30 | 2021-06-29 | Donaldson Company, Inc. | Vent with relief valve |
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US3507708A (en) * | 1966-09-22 | 1970-04-21 | Wonder Piles | Electric cell with gas permeable vent stopper |
US4214045A (en) * | 1978-08-21 | 1980-07-22 | The Richardson Company | Container for a maintenance-free battery |
US5209992A (en) * | 1990-12-20 | 1993-05-11 | Exide Corporation | Water by-passing, flame retardant battery vent plug |
US5422199A (en) * | 1993-12-06 | 1995-06-06 | Gnb Battery Technologies, Inc. | Batteries having improved venting systems |
US5486429A (en) * | 1995-04-24 | 1996-01-23 | Aer Energy Resources, Inc. | Diffusion vent for a rechargeable metal-air cell |
US5565282A (en) * | 1993-06-11 | 1996-10-15 | Exide Corporation | Battery gang vent system |
US5663010A (en) * | 1993-11-30 | 1997-09-02 | Olimpio Stocchiero | Device to exhaust the fumes produced inside accumulator batteries |
US5691076A (en) * | 1995-09-14 | 1997-11-25 | General Motors Corporation | Leak proof venting system for electric storage battery |
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US4851305A (en) * | 1988-02-18 | 1989-07-25 | Gnb Incorporated | Cover assemblies for electric storage batteries and batteries utilizing such cover assemblies |
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1999
- 1999-03-17 BR BRPI9909654-4A patent/BR9909654B1/en not_active IP Right Cessation
- 1999-03-17 WO PCT/US1999/005784 patent/WO1999048161A1/en active Application Filing
- 1999-03-17 AR ARP990101163A patent/AR014737A1/en unknown
- 1999-03-17 CA CA002324232A patent/CA2324232C/en not_active Expired - Fee Related
- 1999-03-17 PL PL99343106A patent/PL194346B1/en not_active IP Right Cessation
- 1999-03-17 EP EP99911443A patent/EP1072059A4/en not_active Withdrawn
Patent Citations (8)
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1298739A1 (en) * | 2001-09-25 | 2003-04-02 | Exide Industries Ltd. | A vented-type leak-resistant motor cycle battery |
US6686720B2 (en) | 2001-09-25 | 2004-02-03 | Exide Industries Ltd. | Vented-type leak resistant motor cycle battery |
EP1636863A2 (en) * | 2003-05-12 | 2006-03-22 | Compagnie Plastic Omnium | Battery vent and pressure blowout relief frit |
EP1636863A4 (en) * | 2003-05-12 | 2009-08-19 | Plastic Omnium Cie | Battery vent and pressure blowout relief frit |
EP1589596A2 (en) * | 2004-04-21 | 2005-10-26 | Biasin SRL | Cover for accumulator containers. |
EP1589596A3 (en) * | 2004-04-21 | 2006-05-31 | Biasin SRL | Cover for accumulator containers. |
EP2698843A1 (en) * | 2012-08-14 | 2014-02-19 | Camel Group Huazhong Branch Co., Ltd. | Storage battery with venting system which has combined filters |
US11047508B2 (en) | 2017-03-30 | 2021-06-29 | Donaldson Company, Inc. | Vent with relief valve |
US11692644B2 (en) | 2017-03-30 | 2023-07-04 | Donaldson Company, Inc. | Vent with relief valve |
Also Published As
Publication number | Publication date |
---|---|
BR9909654A (en) | 2000-11-21 |
BR9909654B1 (en) | 2009-01-13 |
PL194346B1 (en) | 2007-05-31 |
AR014737A1 (en) | 2001-03-28 |
PL343106A1 (en) | 2001-07-30 |
EP1072059A1 (en) | 2001-01-31 |
EP1072059A4 (en) | 2004-09-01 |
CA2324232A1 (en) | 1999-09-23 |
CA2324232C (en) | 2005-03-15 |
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