USRE22833E - Electrolyte level control device - Google Patents

Electrolyte level control device Download PDF

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Publication number
USRE22833E
USRE22833E US22833DE USRE22833E US RE22833 E USRE22833 E US RE22833E US 22833D E US22833D E US 22833DE US RE22833 E USRE22833 E US RE22833E
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cell
cup
tube
electrolyte
filling
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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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • 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
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • 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 electrolyte level control devices for storage batteries, and particularly to the type of device in which the filling up of the filling opening indicates when the battery is filled to the proper level.
  • the object of this invention is to devise an improved device which will satisfy the above requirements and which may be manufactured by mass production methods at a cost of very little more than batteries not provided with such a device.
  • Figure 1 is a fragmentary plan view of a battery, with the cap removed, showing the filling opening made in accordance with my invention
  • Figure 2 a fragmentary vertical section through the filling opening on the line 22 in Figure '1 showing the cap above the opening;
  • Figure 3 is a. fragmentary vertical section on the line 3-3 in Figure 1, with the cap in posltion;
  • Figure 4 a perspective view of the plug in the filling opening with the cup removed.
  • Figure 5 a perspective view of the cup.
  • a filling opening I is formed in the top of the battery casing 2.
  • An outwardly extending boss 3 surrounds the filling opening, said boss being threaded to receive a cap 8 which may be of any suitable construction, and which is shown in Figure 2 above the filling opening and in Figure 3 mounted on the filling opening and screwed into the boss 3.
  • the interior of the boss 3 is threaded, not only to receive the cap 8, but to receive a plug 4, which may be screwed down to a point adjacent the inner or lower end of the filling opening and forms a shoulder or balile therein.
  • the plug 4 is provided with two holes therein, one of said holes having a depending open ended vent tube 5 which extends therefrom into the interior of the cell, and the upper end of which extends slightly above the upper surface of the plug 4 and forms a rim 5.
  • a cylindrical filling well or cup 6 mounted in the other hole in the plug 4, which is preferably circular andslightly larger than the diameter of the hole from which the tube 5 depends, is a cylindrical filling well or cup 6, closed at the bottom and open at the top with an outwardly extending rim 6 adapted to rest on the plug 4.
  • a slot 1 Extending from the upper edge of the cup 6 to a point adjacent the bottom thereof is a slot 1, preferably about wide. Suitable means for preventing the cup from turning and retaining the 'slot in a desired position is provided, such means being indicated in the draw-- ing as a teat or lug 4 over which the upper end of the slot 1 extends.
  • the tube 5 is of suflicient internal diameter to permit the insertion of the tube of a hydrometer for testing the specific gravity of the electrolyte, and for insertion of a venting tube when the batery is being filled with electrolyte in the course of assembly thereof.
  • the hole in plug 4 in which the cup 6 is inserted is sufiiciently large to allow the insertion of the filling tube of the filling apparatus used in manufacturing the battery.
  • the cup 6 is removable and is not inserted until the initial filling of the battery. After the battery has been filled initially to the proper level, the cup is inserted.
  • the operation of the device is as follows: The operator is instructed to pour water with which the battery is being filled into the cup 6. The water tends 'to form a seal over the slot 1. However, the water will flow through the slot 1 into the interior of the cell until the electrolyte in the cell rises to the bottom of the tube 5, thus closing the tube and forming a slight air pressure in the closed space within the top of the cell. This pressure resists the fiow of water through the slot I and causes a seal to form over the slot and prevents further fiow therethrough, causing the water to rise in the filling passage which is an indication to the operator that the battery is filled to the proper level. When the operator discontinues pouring water into the cup 6 the water will gradually flow out through the slot 1 sufliciently to permit air to escape through said slot, whereupon the water in the filling passage will fiow down into the cell.
  • the rim 5 on the tube 5 prevents the water that has risen over the battle from flowing down to tube 5 creating a lake of water over the joint between the upper edge of the cup 6 and the plug 4 and also over the upper end of the slot 1, sealing the joint and the upper end of the slot. If pouring is continued after the cup'is full, the water will rise over the rim 5 and rundown through the tube 5 until the tube 5 is filled, when.
  • said cup having an aperture in the wall thereof of such width that a seal forms thereover when liquid is poured into the cup and the electrolyte in the cell rises to the bottom of the openended tube.
  • a cell having a filling passage therein; a baffle in the passage below the top thereof; two openings in the baflle communicating with the interior of the cell; an open-ended poured in, but the level in the battery will not struction of the cup with the closed bottom has the advantage that a seal will form over the slot sufiiciently to practically prevent water from flowing therethrough, and Many rate to prevent air from escaping from the top of the interior of the cell when the level ,of the electrolyte in the cell reaches the bottom of the vent tube 5, even'yif a comparatively wide slot is formed.
  • a cell having a filling passage therein; a baender in the passage below the top thereof; two openings in the baflle communicating with the interior of the cell; an open-ended tu-be extending from one ofthe openings into the cell to the point to which it is desired that the battery should be filled; and a cup extending into the in.- terior of the cell from the other opening in the baflle, said cup having an aperture in the wall thereof of such width that a seal forms thereover when liquid is poured into the cup and the electrolyte in the cell rises to the bottom of the openended'tube.
  • a cell having a filling passage therein; a baffle in the passage below the top thereof;
  • a cell having a filling passage therein; a bafile in the passage below the top thereof; two openings in the baflie communicating with the interior of the cell; an open-ended tube extending. from one of the openings into the cell to the point to which it is desired that the battery should be filled; and a cup extending into the interior of the cell from the other opening in the bafiie, said cup having a slot approximately a2 Wide in the side thereof extending from the top thereof to adjacent the bottom thereof.
  • an electrolyte level control device for storage batteries a cell having a filling passage therein; a bafile screwed into the passage below the top thereof; two openings in the bafile conimunicating with the interior of the cell; an openended tube extending from one of the openings into the cell to the point to which it is desired that the battery should be filled; and a cup extending into the interior of the cell from the other opening in the bailie,- said cup having an aperture inthe wall thereof of such width that asea'l forms thereover when liquid is poured into the cup and the electrolyte in the cell rises to the bottom of the open-ended tube.
  • a cell having a filling passage therein; a baflle in the passage below the top thereof; two openings in the baffle communicating with the interior of the cell; an open-ended tube extending from one of the-openings into the cell to the point to which it is desired that the battery should be filled; a rim around the open;- ing from which said tube extends; and a cup extending into the interior of the cell from the other opening in the baflle, said cup having an aperture in the wall thereof of such width that a seal forms thereover when liquid is poured into the cup and the electrolyte in the cell rises to the bottom of the open-ended tube.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Filling, Topping-Up Batteries (AREA)

Description

ELECTROLYTE LEVEL CONTROL DEVICE FOR STORAGE BATTERIES 0r1g1na1F11ed Dec 27, 1941 jTlUtZTITOr J. sandus fy J. SANDUSKY Jan. 21, 1947.
Reissued Jan. 21, 1947 ELECTROLYTE LEVEL CONTROL DEVICE FOR STORAGE BATTERIES I Julius Sandusky, Toronto Township, Peel County, Ontario, Canada Original No. 2,306,569, dated December 29, 1942,
Serial No. 424.661, December 27, 1941. Application for reissue December 21; 1944, Serial No.
6 Claims. 1
This invention relates to electrolyte level control devices for storage batteries, and particularly to the type of device in which the filling up of the filling opening indicates when the battery is filled to the proper level.
In such devices it is necessary to provide an opening sufficiently large to accommodate the tubes used for inserting the electrolyte when the battery is assembled. It is also necessary to provide an opening for insertion of the 'hydrometer for testing the electrolyte. Furthermore it is desirable to so construct the device that the electrolyte will stay up in the filling opening long enough to give a definite indication that the battery is filled to the required level.
The object of this invention is to devise an improved device which will satisfy the above requirements and which may be manufactured by mass production methods at a cost of very little more than batteries not provided with such a device.
This object is attained by means of the construction hereinafter described and illustrated by way of example in the accompanying drawing in which Figure 1 is a fragmentary plan view of a battery, with the cap removed, showing the filling opening made in accordance with my invention;
Figure 2 a fragmentary vertical section through the filling opening on the line 22 in Figure '1 showing the cap above the opening;
Figure 3 is a. fragmentary vertical section on the line 3-3 in Figure 1, with the cap in posltion;
Figure 4 a perspective view of the plug in the filling opening with the cup removed; and
Figure 5 a perspective view of the cup.
In the drawing like numerals of reference indicate corresponding parts in the different figures.
The construction of the battery is well known and therefore only such parts thereof as are relative to the present invention are indicated. A filling opening I is formed in the top of the battery casing 2. An outwardly extending boss 3 surrounds the filling opening, said boss being threaded to receive a cap 8 which may be of any suitable construction, and which is shown in Figure 2 above the filling opening and in Figure 3 mounted on the filling opening and screwed into the boss 3.
The interior of the boss 3 is threaded, not only to receive the cap 8, but to receive a plug 4, which may be screwed down to a point adjacent the inner or lower end of the filling opening and forms a shoulder or balile therein. The plug 4 is provided with two holes therein, one of said holes having a depending open ended vent tube 5 which extends therefrom into the interior of the cell, and the upper end of which extends slightly above the upper surface of the plug 4 and forms a rim 5.
Mounted in the other hole in the plug 4, which is preferably circular andslightly larger than the diameter of the hole from which the tube 5 depends, is a cylindrical filling well or cup 6, closed at the bottom and open at the top with an outwardly extending rim 6 adapted to rest on the plug 4. Extending from the upper edge of the cup 6 to a point adjacent the bottom thereof is a slot 1, preferably about wide. Suitable means for preventing the cup from turning and retaining the 'slot in a desired position is provided, such means being indicated in the draw-- ing as a teat or lug 4 over which the upper end of the slot 1 extends. It is found that if the slot 1 is located too close to the tube 5 liquid will fiow more rapidly through the slot than if it is located an appreciable distance away from the tube 5 as shown in the drawing. The interior of the boss 3 and the cup 6 form a filling passage.
The tube 5 is of suflicient internal diameter to permit the insertion of the tube of a hydrometer for testing the specific gravity of the electrolyte, and for insertion of a venting tube when the batery is being filled with electrolyte in the course of assembly thereof. The hole in plug 4 in which the cup 6 is inserted is sufiiciently large to allow the insertion of the filling tube of the filling apparatus used in manufacturing the battery. For this purpose the cup 6 is removable and is not inserted until the initial filling of the battery. After the battery has been filled initially to the proper level, the cup is inserted.
The operation of the device is as follows: The operator is instructed to pour water with which the battery is being filled into the cup 6. The water tends 'to form a seal over the slot 1. However, the water will flow through the slot 1 into the interior of the cell until the electrolyte in the cell rises to the bottom of the tube 5, thus closing the tube and forming a slight air pressure in the closed space within the top of the cell. This pressure resists the fiow of water through the slot I and causes a seal to form over the slot and prevents further fiow therethrough, causing the water to rise in the filling passage which is an indication to the operator that the battery is filled to the proper level. When the operator discontinues pouring water into the cup 6 the water will gradually flow out through the slot 1 sufliciently to permit air to escape through said slot, whereupon the water in the filling passage will fiow down into the cell.
The rim 5 on the tube 5 prevents the water that has risen over the battle from flowing down to tube 5 creating a lake of water over the joint between the upper edge of the cup 6 and the plug 4 and also over the upper end of the slot 1, sealing the joint and the upper end of the slot. If pouring is continued after the cup'is full, the water will rise over the rim 5 and rundown through the tube 5 until the tube 5 is filled, when.
the water will rise in the filling passage to the top thereof and will overflow if further water is fiasss" '1' i; "1
interior of the cell from the other opening in the bafiie, said cup having an aperture in the wall thereof of such width that a seal forms thereover when liquid is poured into the cup and the electrolyte in the cell rises to the bottom of the openended tube. v i
3. In an electrolyte level control device for storage batteries, a cell having a filling passage therein; a baffle in the passage below the top thereof; two openings in the baflle communicating with the interior of the cell; an open-ended poured in, but the level in the battery will not struction of the cup with the closed bottom has the advantage that a seal will form over the slot sufiiciently to practically prevent water from flowing therethrough, and Many rate to prevent air from escaping from the top of the interior of the cell when the level ,of the electrolyte in the cell reaches the bottom of the vent tube 5, even'yif a comparatively wide slot is formed. It is advantageous in the manufacture of the device to have a wide slot, since it is difficult to mould a slot in hard rubber or similar material, if the slot is much narrower than /32. Moreover, by this construction, although a seal is quickly formed when the electrolyte reaches'the bottom of the vent tube 5, assoon as the operator discontinues pouring, the seal will break comparatively rapidly,
thus permitting a quick drop of the liquid in the filling passageway. 1
Although the invention has been described in some detail, it will be understood that the invention is not limited in its scope except as defined in the annexed claims.
What I claim as my invention is:
1. In an electrolyte level control device for storage batteries, a cell having a filling passage therein; a baiile in the passage below the top thereof; two openings in the baflle communicating with the interior of the cell; an open-ended tu-be extending from one ofthe openings into the cell to the point to which it is desired that the battery should be filled; and a cup extending into the in.- terior of the cell from the other opening in the baflle, said cup having an aperture in the wall thereof of such width that a seal forms thereover when liquid is poured into the cup and the electrolyte in the cell rises to the bottom of the openended'tube. I
2. In an electrolyte level control device fors'torage batteries, a cell having a filling passage therein; a baffle in the passage below the top thereof;
two openings in the ba-file communicating with the interior of the cell; an open-ended tube extending from one of the openings into the cell to the point to which it is desired that the battery should be filled and a removable cup extending into the tube extending from one of the openings into the cell to the point to which it is desired that the battery should be filled; a removable cup extending into the interior of the cell from the other opening in the bafile, said cup having an aperture in the wall thereof of such width that a seal forms thereover when liquid is poured into the cup and the electrolyte in the cell rises to the bottom of the open-ended tube; and means for preventing turning .of the cup in the opening. j
4. In an electrolyte level control device for storage batteries, a cell having a filling passage therein; a bafile in the passage below the top thereof; two openings in the baflie communicating with the interior of the cell; an open-ended tube extending. from one of the openings into the cell to the point to which it is desired that the battery should be filled; and a cup extending into the interior of the cell from the other opening in the bafiie, said cup having a slot approximately a2 Wide in the side thereof extending from the top thereof to adjacent the bottom thereof.
5. In an electrolyte level control device for storage batteriesa cell having a filling passage therein; a bafile screwed into the passage below the top thereof; two openings in the bafile conimunicating with the interior of the cell; an openended tube extending from one of the openings into the cell to the point to which it is desired that the battery should be filled; and a cup extending into the interior of the cell from the other opening in the bailie,- said cup having an aperture inthe wall thereof of such width that asea'l forms thereover when liquid is poured into the cup and the electrolyte in the cell rises to the bottom of the open-ended tube.
6. In an electrolyte level control device for storage batteries, a cell having a filling passage therein; a baflle in the passage below the top thereof; two openings in the baffle communicating with the interior of the cell; an open-ended tube extending from one of the-openings into the cell to the point to which it is desired that the battery should be filled; a rim around the open;- ing from which said tube extends; and a cup extending into the interior of the cell from the other opening in the baflle, said cup having an aperture in the wall thereof of such width that a seal forms thereover when liquid is poured into the cup and the electrolyte in the cell rises to the bottom of the open-ended tube.
JULIUS SANDUSKY.
US22833D Electrolyte level control device Expired USRE22833E (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505207A (en) * 1945-11-14 1950-04-25 Electric Storage Battery Co Nonspill storage battery
US2548734A (en) * 1947-11-05 1951-04-10 Scully Signal Co Insertable vent pipe
US3485678A (en) * 1966-09-06 1969-12-23 Bosch Gmbh Robert Accumulator with electrolyte reservoir in the cover

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505207A (en) * 1945-11-14 1950-04-25 Electric Storage Battery Co Nonspill storage battery
US2548734A (en) * 1947-11-05 1951-04-10 Scully Signal Co Insertable vent pipe
US3485678A (en) * 1966-09-06 1969-12-23 Bosch Gmbh Robert Accumulator with electrolyte reservoir in the cover

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