US3201284A - Two-way vent valve for batteries - Google Patents

Two-way vent valve for batteries Download PDF

Info

Publication number
US3201284A
US3201284A US235398A US23539862A US3201284A US 3201284 A US3201284 A US 3201284A US 235398 A US235398 A US 235398A US 23539862 A US23539862 A US 23539862A US 3201284 A US3201284 A US 3201284A
Authority
US
United States
Prior art keywords
container
pressure
sealing rings
interior
end portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US235398A
Inventor
Grenville B Ellis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gould National Batteries Inc
Original Assignee
Gould National Batteries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gould National Batteries Inc filed Critical Gould National Batteries Inc
Priority to US235398A priority Critical patent/US3201284A/en
Application granted granted Critical
Publication of US3201284A publication Critical patent/US3201284A/en
Assigned to SAFT AMERICAM INC., A CORP. OF DE. reassignment SAFT AMERICAM INC., A CORP. OF DE. ASSIGNS ENTIRE INTEREST. SUBJECT TO LICENSE RECITED.(SEE DOCUMENT FOR DETAILS Assignors: GOULD INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • H01M50/342—Non-re-sealable arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/141—Check valves with flexible valve members the closure elements not being fixed to the valve body
    • F16K15/142—Check valves with flexible valve members the closure elements not being fixed to the valve body the closure elements being shaped as solids of revolution, e.g. toroidal or cylindrical rings
    • 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
    • H01M50/317—Re-sealable arrangements
    • H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7771—Bi-directional flow valves

Definitions

  • This invention relates to a pressure release device and particularly to a two-way pressure vent valve for use with containers in which a gas is to be retained under predetermined maximum and minimum pressures as in storage battery containers of the normally closed type.
  • a subatmospheric pressure or low vacuum may develop under some conditions in such containers and under other conditions dangerously high pressure may build up and require the release of gas to the atmosphere.
  • Dangerously low internal pressure may be caused by chemical reaction of the gases with the active material in the container or when the cell or battery is used under extremely low temperature conditions, requiring the opening of the valve to admit air to the container.
  • Another object is to provide a vent device which will allow the flow of gas either from or into a container when the pressure therein varies a predetermined limit from atmospheric pressure, while insuring the closing and sealing of the container when the pressure differential has been alleviated.
  • FIGURE 1 is a plan view of a battery cell provided with one of my improved two-way vent valves;
  • FIG. 2 is a side elevational view showing the vent valve in place on a battery container
  • FIG. 3 is a central vertical sectional view showing a preferred form of my two-way vent valve separate from the container;
  • FIG. 4 is a horizontal sectional view taken on the line 4-4 of FIG. 3, and
  • FIG. 5 is a side elevational view showing the tubular body member of my improved valve.
  • a battery container subject to variable internal gas pressure is indicated generally at 6, the cover of the container is indicated at 7, positive and negative terminals are indicated at 8 and ,8a respectively, and one of my improved pressure vent valves is indicated generally at 9.
  • the valve 9 has a vertically elongated tubular body 10 formed with an externally threaded lower end portion 11 adapted to fit in a threaded opening in the cell cover 7.
  • An upper end portion 12 of the Valve body may be formed with a cross slot 13 in its upper end surface to facilitate turning the body to and from its assembled position in the threaded opening in the cover.
  • annular groove indicated generally by the numeral 14 is formed in the outer periphery of the body 10, being defined by spaced parallel annular shoulders 15 and 16 and adjacent cylindrical surfaces 17 and 18.
  • An enlargement 19 of the annular groove 14 is disposed radially inward therefrom and is connected by radial passages 29 to a vertically elongated passage 21 extending to the lower end of the tubular body 10.
  • the rings 22 and 23 are formed from suitably flexible, elastic material, such as a rubber or rubber-like material of selected durometer hardness to permit the separation of the valve seat surfaces 24 for venting the interior of the container upon the development of predetermined gas pressure differentials at the interior and exterior sides of the sealing rings.
  • the rings 22 and 23 may be formed, for example, from neoprene having durometer hardness within the range of 35 to 60.
  • these sealing rings should have suflicient elasticity so that they may be expanded and sprung into place in the groove 14 defined by the annular shoulders 15 and 16 and cylindrical surfaces 17 and 18.
  • the annular enlargement 19 disposed radially inwardly from the rings 22 and 23 permits the beveled sections of the rings to be sprung inward for the passage of air into the container when a subatmospheric pressure of predetermined value develops within the container.
  • connection between the tubular body 10 and battery cell cover 7 may be sealed by the use of a gasket 25 ('FIG. 3) between an annular shoulder on the body 10 above the threaded lower end portion 11 for contact with an annular surface of the cover 7.
  • a predetermined maximum upper limit may be established for the pressure in a battery cell.
  • portions of the rings 22 and 23 adjacent to the contact seat surfaces 24 are separated and sprung outward to relieve the container of excess gas.
  • air will be admitted between the sealing rings 22 and 23 so that the gas pressure within the battery container is maintained at all times within safe limits.
  • a normally closed battery container subject to variable internal gas pressure and a pressure vent valve comprising a tubular body having a lower end portion communicating with the interior of said container and a normally closed upper end portion extending to the exterior of said container and formed with an annular groove in its outer periphery, a plurality of flexible elastic sealing rings confined under lateral compression in said groove, each of said sealing rings having a valve seat surface contacting a valve seat surface of a second sealing ring, and a passage for gas extending through said upper end portion of said body to the exterior thereof adjacent to interior surfaces of said sealing rings, said valve seat surfaces being separable to vent the interior of said container upon the development of predetermined gas pressure diflerentials at the exterior and interior sides of said sealing rings.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Description

Aug. 17, 1965 B. ELLIS 3,201,284
TWO-WAY VENT VALVE FOR BATTERIES Filed Nov. 5, 1962 M @i ,3 i9
United States Patent 3,201,284 TWO-WAY VENT VALVE FOR BATTERIES Grenville B. Ellis, Easthampton, Mass., assignor to Gould- National Batteries, Inc., a corporation of Delaware Filed Nov. 5, 1962, Ser. No. 235,398 4 Claims. (Cl. 136-178) This invention relates to a pressure release device and particularly to a two-way pressure vent valve for use with containers in which a gas is to be retained under predetermined maximum and minimum pressures as in storage battery containers of the normally closed type. A subatmospheric pressure or low vacuum may develop under some conditions in such containers and under other conditions dangerously high pressure may build up and require the release of gas to the atmosphere. Dangerously low internal pressure may be caused by chemical reaction of the gases with the active material in the container or when the cell or battery is used under extremely low temperature conditions, requiring the opening of the valve to admit air to the container.
It is an object of this invention to provide a novel, simple and reliable two-way vent valve which will permit gas to flow either from the interior of the cell container or into the interior of a normally sealed container when a predetermined pressure differential exists between the gas within the container and the outside atmospheric pressure, thus preventing damage to the container that might otherwise result from excessively high or low internal pressures.
Another object is to provide a vent device which will allow the flow of gas either from or into a container when the pressure therein varies a predetermined limit from atmospheric pressure, while insuring the closing and sealing of the container when the pressure differential has been alleviated.
The invention also includes certain other novel features of construction which will be more fully pointed out in the following specification and claims.
In the drawing:
FIGURE 1 is a plan view of a battery cell provided with one of my improved two-way vent valves;
FIG. 2 is a side elevational view showing the vent valve in place on a battery container;
FIG. 3 is a central vertical sectional view showing a preferred form of my two-way vent valve separate from the container;
FIG. 4 is a horizontal sectional view taken on the line 4-4 of FIG. 3, and
FIG. 5 is a side elevational view showing the tubular body member of my improved valve.
Referring to FIGS, 1 and 2, a battery container subject to variable internal gas pressure is indicated generally at 6, the cover of the container is indicated at 7, positive and negative terminals are indicated at 8 and ,8a respectively, and one of my improved pressure vent valves is indicated generally at 9. As shown in FIGS. 3 and 5, the valve 9 has a vertically elongated tubular body 10 formed with an externally threaded lower end portion 11 adapted to fit in a threaded opening in the cell cover 7. An upper end portion 12 of the Valve body may be formed with a cross slot 13 in its upper end surface to facilitate turning the body to and from its assembled position in the threaded opening in the cover.
An annular groove indicated generally by the numeral 14 is formed in the outer periphery of the body 10, being defined by spaced parallel annular shoulders 15 and 16 and adjacent cylindrical surfaces 17 and 18. An enlargement 19 of the annular groove 14 is disposed radially inward therefrom and is connected by radial passages 29 to a vertically elongated passage 21 extending to the lower end of the tubular body 10.
3,2di284 Patented Aug. 17, 1965 ICC Sealing rings 22 and 23 are confined under lateral compression and longitudinal tension in the groove -14 between the shoulders 15 and 16. Each of these rings has an annular valve seat surface 24 which is normally in closed, continuous contact with a similar seat surface of the other ring. Beveled outer and] inner surf-aces 22a on the ring 22 converge toward the seat surface 24 and similar beveled surfaces 23a are formed on the ring 23 to converge toward the seat 24.
The rings 22 and 23 are formed from suitably flexible, elastic material, such as a rubber or rubber-like material of selected durometer hardness to permit the separation of the valve seat surfaces 24 for venting the interior of the container upon the development of predetermined gas pressure differentials at the interior and exterior sides of the sealing rings. The rings 22 and 23 may be formed, for example, from neoprene having durometer hardness within the range of 35 to 60. For use with a simple, one-piece valve body these sealing rings should have suflicient elasticity so that they may be expanded and sprung into place in the groove 14 defined by the annular shoulders 15 and 16 and cylindrical surfaces 17 and 18. The annular enlargement 19 disposed radially inwardly from the rings 22 and 23 permits the beveled sections of the rings to be sprung inward for the passage of air into the container when a subatmospheric pressure of predetermined value develops within the container.
The connection between the tubular body 10 and battery cell cover 7 may be sealed by the use of a gasket 25 ('FIG. 3) between an annular shoulder on the body 10 above the threaded lower end portion 11 for contact with an annular surface of the cover 7.
By suitable selection of the composition, shape and dimensions of the rings 22 and 23, a predetermined maximum upper limit may be established for the pressure in a battery cell. Upon the development of a high pressure, approaching the safe upper limit in the con tainer, for example, portions of the rings 22 and 23 adjacent to the contact seat surfaces 24 are separated and sprung outward to relieve the container of excess gas. Subsequently, should the pressure in the container be reduced to a predetermined safe low limit of vacuum, air will be admitted between the sealing rings 22 and 23 so that the gas pressure within the battery container is maintained at all times within safe limits.
Thus in operation when for any reason. a substantial, predetermined pressure differential develops between the gas pressure inside the container and the outside atmospheric pressure, the beveled section of the seal rings 22 and 23 will be deflected from its normal position in the direction of the resultant pressure acting on these rings. If the pressure differential becomes great enough, the seal at the annular seat surface 24 will be broken, and gas will flow from the higher pressure side of the container until the excessive pressure differential has been eliminated. It will also be understood that by selection of the thickness and shape of the coacting seal rings a pressure vent valve in conformance with my invention may be adapted to vent when any predetermined pressure differential is reached. Modifications may be made in the shape of sealing rings described herein without departing from my inventive concept.
I claim:
1. In combination, a normally closed battery container subject to variable internal gas pressure, and a pressure vent valve comprising a tubular body having a lower end portion communicating with the interior of said container and a normally closed upper end portion extending to the exterior of said container and formed with an annular groove in its outer periphery, a plurality of flexible elastic sealing rings confined under lateral compression in said groove, each of said sealing rings having a valve seat surface contacting a valve seat surface of a second sealing ring, and a passage for gas extending through said upper end portion of said body to the exterior thereof adjacent to interior surfaces of said sealing rings, said valve seat surfaces being separable to vent the interior of said container upon the development of predetermined gas pressure diflerentials at the exterior and interior sides of said sealing rings.
2. A combination in accordance with claim 1 in which said body is formed with an annular enlargement of said groove disposed radially inward from said rings to receive and permit the separation of the adjoining portions of said rings when predetermined subatmospheric pressure is created in said container.
3. A combination in accordance with claim 1 in which said sealing rings are formed with annular surfaces con- References Cited by the Examiner UNITED STATES PATENTS 7/50 Wells 136178.1
FOREIGN PATENTS 648,257 12/28 France.
466 1900 Great Britain.
15 WINSTON A. DOUGLAS, Primary Examiner.
JOHN H. MACK, Examiner.

Claims (1)

1. IN COMBINATION, A NORMALLY CLOSED BATTERY CONTAINER SUBJECT TO VARIABLE INTERNAL GAS PRESSURE, AND A PRESSURE VENT VALVE COMPRISING A TUBULAR BODY HAVING A LOWER END PORTION COMMUNICATING WITH THE INTERIOR OF SAID CONTAINER AND A NORMALLY CLOSED UPPER END PORTION EXTENDING TO THE EXTERIOR OF SAID CONTAINER AND FORMED WITH AN ANNULAR GROOVE IN ITS OUTER PERIPHERY, A PLURALITY OF FLEXIBLE ELASTIC SEALING RINGS CONFINED UNDER LATERAL COMPRESSION IN SAID GROOVE, EACH OF SAID SEALING RINGS HAVING A VALVE SEAT SURFACE CONTACTING A VALVE SEAT SURFACE OF A SECOND SEALING RING, AND A PASSAGE FOR GAS EXTENDING THROUGH SAID UPPER END PORTION OF SAID BODY TO THE EXTERIOR THEREOF ADJACENT TO INTERIOR OF SAID SEALING RINGS, SAID VALVE SEAT SURFACES BEING SEPARABLE TO VENT THE INTERIOR OF SAID CONTAINER UPON THE DEVELOPMENT OF PREDETERMINED GAS PRESSURE DIFFERENTIALLS AT THE EXTERIOR SIDES OF SAID SEALING RINGS.
US235398A 1962-11-05 1962-11-05 Two-way vent valve for batteries Expired - Lifetime US3201284A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US235398A US3201284A (en) 1962-11-05 1962-11-05 Two-way vent valve for batteries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US235398A US3201284A (en) 1962-11-05 1962-11-05 Two-way vent valve for batteries

Publications (1)

Publication Number Publication Date
US3201284A true US3201284A (en) 1965-08-17

Family

ID=22885327

Family Applications (1)

Application Number Title Priority Date Filing Date
US235398A Expired - Lifetime US3201284A (en) 1962-11-05 1962-11-05 Two-way vent valve for batteries

Country Status (1)

Country Link
US (1) US3201284A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537903A (en) * 1968-12-19 1970-11-03 Texas Instruments Inc Pressure releasing feed-through battery terminal
FR2070233A1 (en) * 1969-12-03 1971-09-10 Gardner Denver Co
US3957078A (en) * 1974-06-13 1976-05-18 Maclean-Fogg Lock Nut Company Wasp excluder and exhaust port protector for air brakes
FR2416561A1 (en) * 1978-02-03 1979-08-31 Varta Batterie ACCUMULATOR WITH AQUEOUS ELECTROLYTE AND A RECOMBINATION CATALYST
US4328290A (en) * 1980-12-29 1982-05-04 Gould Inc. Battery vent plug
US4549565A (en) * 1984-03-05 1985-10-29 Bs&B Safety Systems, Inc. Reclosing rupture disk assembly
US5082024A (en) * 1989-01-27 1992-01-21 Alb. Klein Gmbh & Co. Kg Valve assembly including a hollow conduit
EP0504573A1 (en) * 1991-03-15 1992-09-23 VARTA Batterie Aktiengesellschaft Maintenance-free leadaccumulator comprising a two-way relief valve
FR2674376A1 (en) * 1991-01-25 1992-09-25 Huitric Joel Valve for leaktight batteries
US20060243729A1 (en) * 2005-04-27 2006-11-02 Martin Diehl Venting water-tight battery-operated devices
US20080169788A1 (en) * 2007-01-12 2008-07-17 Joseph Bobbin Battery pack
US20100136402A1 (en) * 2009-04-22 2010-06-03 Tesla Motors, Inc. Sealed battery enclosure
US20100273034A1 (en) * 2009-04-22 2010-10-28 Tesla Motors, Inc. Battery pack enclosure with controlled thermal runaway release system
US20110174556A1 (en) * 2009-04-22 2011-07-21 Tesla Motors, Inc. Battery Pack Gas Exhaust System
US8247097B1 (en) 2011-06-10 2012-08-21 Tesla Motors, Inc. Method of controlling battery pack humidity utilizing an active reactivation system
US8557416B2 (en) 2009-04-22 2013-10-15 Tesla Motors, Inc. Battery pack directed venting system
US8557415B2 (en) 2009-04-22 2013-10-15 Tesla Motors, Inc. Battery pack venting system
EP2815637B1 (en) 2012-02-13 2018-04-25 Robert Bosch GmbH Pressure compensation element having a diaphragm, housing, battery cell module and motor vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190000466A (en) * 1900-01-08 1900-11-24 Allan And Adamson Ltd Improvements in Apparatus for Facilitating the Escape of Gas from Electric Storage Batteries or Accumulators.
FR648257A (en) * 1927-12-15 1928-12-07 Comp Generale Electricite Gas exhaust port plug for electric accumulators
US2516084A (en) * 1944-10-04 1950-07-18 Willard Storage Battery Co Storage battery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190000466A (en) * 1900-01-08 1900-11-24 Allan And Adamson Ltd Improvements in Apparatus for Facilitating the Escape of Gas from Electric Storage Batteries or Accumulators.
FR648257A (en) * 1927-12-15 1928-12-07 Comp Generale Electricite Gas exhaust port plug for electric accumulators
US2516084A (en) * 1944-10-04 1950-07-18 Willard Storage Battery Co Storage battery

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537903A (en) * 1968-12-19 1970-11-03 Texas Instruments Inc Pressure releasing feed-through battery terminal
FR2070233A1 (en) * 1969-12-03 1971-09-10 Gardner Denver Co
US3957078A (en) * 1974-06-13 1976-05-18 Maclean-Fogg Lock Nut Company Wasp excluder and exhaust port protector for air brakes
FR2416561A1 (en) * 1978-02-03 1979-08-31 Varta Batterie ACCUMULATOR WITH AQUEOUS ELECTROLYTE AND A RECOMBINATION CATALYST
US4180624A (en) * 1978-02-03 1979-12-25 Varta Batterie Aktiengesellschaft Storage battery with aqueous electrolyte and recombiner
US4328290A (en) * 1980-12-29 1982-05-04 Gould Inc. Battery vent plug
US4549565A (en) * 1984-03-05 1985-10-29 Bs&B Safety Systems, Inc. Reclosing rupture disk assembly
US5082024A (en) * 1989-01-27 1992-01-21 Alb. Klein Gmbh & Co. Kg Valve assembly including a hollow conduit
FR2674376A1 (en) * 1991-01-25 1992-09-25 Huitric Joel Valve for leaktight batteries
EP0504573A1 (en) * 1991-03-15 1992-09-23 VARTA Batterie Aktiengesellschaft Maintenance-free leadaccumulator comprising a two-way relief valve
US20060243729A1 (en) * 2005-04-27 2006-11-02 Martin Diehl Venting water-tight battery-operated devices
US7544439B2 (en) * 2005-04-27 2009-06-09 The Gillette Company Venting water-tight battery-operated devices
US7846570B2 (en) 2005-04-27 2010-12-07 The Gillette Company Venting water-tight battery-operated devices
US20080169788A1 (en) * 2007-01-12 2008-07-17 Joseph Bobbin Battery pack
US9362762B2 (en) 2007-01-12 2016-06-07 Koehler-Bright Star LLC Battery pack and cap lamp system
US8729851B2 (en) 2007-01-12 2014-05-20 Koehler-Bright Star, Inc. Battery pack for miner's cap lamp with charging and discharging control module
US8922159B2 (en) 2007-01-12 2014-12-30 Koehler-Bright Star, Inc. Battery pack for powering miner's cap lamp
US20100273034A1 (en) * 2009-04-22 2010-10-28 Tesla Motors, Inc. Battery pack enclosure with controlled thermal runaway release system
US8268469B2 (en) 2009-04-22 2012-09-18 Tesla Motors, Inc. Battery pack gas exhaust system
US8277965B2 (en) 2009-04-22 2012-10-02 Tesla Motors, Inc. Battery pack enclosure with controlled thermal runaway release system
US8361642B2 (en) 2009-04-22 2013-01-29 Tesla Motors, Inc. Battery pack enclosure with controlled thermal runaway release system
US8367233B2 (en) 2009-04-22 2013-02-05 Tesla Motors, Inc. Battery pack enclosure with controlled thermal runaway release system
US8557416B2 (en) 2009-04-22 2013-10-15 Tesla Motors, Inc. Battery pack directed venting system
US8557415B2 (en) 2009-04-22 2013-10-15 Tesla Motors, Inc. Battery pack venting system
US20110174556A1 (en) * 2009-04-22 2011-07-21 Tesla Motors, Inc. Battery Pack Gas Exhaust System
US20100136402A1 (en) * 2009-04-22 2010-06-03 Tesla Motors, Inc. Sealed battery enclosure
US8247097B1 (en) 2011-06-10 2012-08-21 Tesla Motors, Inc. Method of controlling battery pack humidity utilizing an active reactivation system
US9040184B2 (en) 2011-06-10 2015-05-26 Tesla Motors, Inc. Battery pack dehumidifier with active reactivation system
EP2815637B1 (en) 2012-02-13 2018-04-25 Robert Bosch GmbH Pressure compensation element having a diaphragm, housing, battery cell module and motor vehicle

Similar Documents

Publication Publication Date Title
US3201284A (en) Two-way vent valve for batteries
KR880000277B1 (en) Battery vent plug
US3802923A (en) Resealable vent closure for sealed galvanic dry cell
US3664878A (en) Pressure relief vent valve for a fluid tight sealed container especially an alkaline galvanic cell
US4052534A (en) Battery vent plug
US3218197A (en) Combined safety blow-out and gas permeable membrane for galvanic cells
US3994749A (en) Vent valve for nickel-cadmium energy cells
US3497395A (en) Venting valve assembly
WO2003054983A3 (en) Electrochemical cell having venting current collector and seal assembly
US3143441A (en) Diaphragm valve for venting fluid
US4078121A (en) Safety-valve stopper especially intended for electric storage batteries
KR920003756B1 (en) Battery vent valve
US3256117A (en) Battery casing with improved seal and vent
EP3533093A1 (en) A double-chamber battery venting system
US4180624A (en) Storage battery with aqueous electrolyte and recombiner
US3436273A (en) Safety valve intended mainly for electric batteries
US3168907A (en) Pressure vessel
GB2086646A (en) Vent valves for batteries
US3293081A (en) Venting means for a galvanic cell
US3278340A (en) Deformation-safe dry cell
US2729693A (en) Dry cell
US6294282B1 (en) Two way battery vent cap using cup valves
US2690466A (en) Submersible vent cap for storage batteries
KR890002671B1 (en) Safety valve apparatus of enclosed accumulator
US5846671A (en) Lid for batteries

Legal Events

Date Code Title Description
AS Assignment

Owner name: SAFT AMERICAM INC., 711 INDUSTRIAL BLVD., P.O. BOX

Free format text: ASSIGNS ENTIRE INTEREST. SUBJECT TO LICENSE RECITED.;ASSIGNOR:GOULD INC.;REEL/FRAME:003979/0564

Effective date: 19820331