CA1158306A - Pole bushing for batteries - Google Patents
Pole bushing for batteriesInfo
- Publication number
- CA1158306A CA1158306A CA000361194A CA361194A CA1158306A CA 1158306 A CA1158306 A CA 1158306A CA 000361194 A CA000361194 A CA 000361194A CA 361194 A CA361194 A CA 361194A CA 1158306 A CA1158306 A CA 1158306A
- Authority
- CA
- Canada
- Prior art keywords
- post
- sealing
- cover
- sealing element
- sealing material
- 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 239000003566 sealing material Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 9
- 239000012858 resilient material Substances 0.000 abstract description 2
- 239000003792 electrolyte Substances 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Led Device Packages (AREA)
- Ceramic Products (AREA)
Abstract
Abstract A pole bushing for batteries extends through the battery cover and forms a seal between the cover and the battery post. The bushing comprises a metal sleeve (1) which is embedded in a sealing material (2) to form a sealing element with an external surface (3) which bears against the battery cover (5), and with an internal surface (4) which at least partially is in close contact with the post (6) passing through the cover. The metal sleeve is provided with grooves (7) on its outside or inside to increase the sealing distance for contact between the sleeve and sealing material. One end portion (8) of the sleeve extends out of the sealing material and forms an annular portion, the internal surface of which (9) is for metallic connection to the post. The inventive sealing material is made of a resilient material, and the external surface of the sealing element is formed for contact with, and providing a sealing surface against the battery cover.
Description
8 3~ ~
Pole bushing for batteries The present invention relates to a pole bushing for batteries, particularly of the kind leading through the battery cover and forming a seal between the cover and the battery post.
Such bushings comprise a metal sleeve which is provided with grooves and which is embedded in a sealing material to form a sealing element with an external surface which bears against the battery cover and with an internal surface which at least partially is in close and immovable contact withthe post passing through the cover. One end portion of the metal sleeve extends out of the sealing material and forms an annular portion, the internal surface of which forms part of the internal surface of the sealing element and is meant to be at least partially in rigid metallic connection with the post.
A pole bushing for batteries of the kind mentioned above is previously known, for instance from SE-PA 7701558-4~ and the object with this known device is to provide a pole bushing which can move axially together with the post and simultaneously provide an effective seal between the battery cover and the post.In structures kno~m hitherto, the post, which is rigidly cormected via a pole connection to the electrode plates, is also rigidly connected to the battery cover. However, the electrode plates expand dué to ageing during operation, thus causing displacement of the post, which could damage the battery cover and result in leakage of the electrolyte. However, these drawbacks have been ~.
eliminated with a pole bushing which is displaceable in the cover and provided with means for ensuring a fluid-tight seal between the pole bushing and the cover. ~-However, the pole bushing according to the Swedish patent application mentioned above is burdened with certain drawbacks, since the material used in _ the sealing element will only perlnit an effective seal against the metallic sleeve but not against the battery cover. This means that either the pole bushing ~.
~ ~ s ~
or the battery cover must be provided with a recess for a sealing ring made from a material capable of providing an effective seal between the cover and the bushing.
One object of the present invention is to provide a simple structure for a pole bushing by eliminating the recess and the sealing ring and nevertheless maintaining an effective seal between the cover and the bushing.
In accordance with the invention this object is reali~ed by the sealing ` material having resilient properties and by the external surface of the sealing element being shaped for movable and sealing contact with the battery cover for forming a sealing surface against the cover.
In a suitable embodiment the sealing material is made of rubber, whereas the sleeve and the surface of the post are made of lead.
The invention will best be understood from the following description of a suitable embodiment, when read in conjunction with the accompanying drawings on which Fig. 1 is an end view of the pole bushing in accordance with the invention, Fig. 2 is a cross sectional view of the pole bushing according to Fig. 1, and Fig. 3 is a cross-sectional view through a cover with a pole bushing according to Figs. 1 and 2, the cover being metallically connected to a post.
The pole bushing shown in Figs. 1 and 2 comprises a sleeve 1 of metal~
which is embedded in a sealing material 2 to form a sealing element with external 3 and internal ~ surfaces for making direct contact with the battery cover 5 and a post 6 extending through the cover 5 (see Fig. 3). The metal sleeve 1 is suitably provided with grooves 7 or serrations to increase the sealing distance _ ~ for contact between the metal sleeve 1 and the sealing material 2, thereby increasing the sealing effect and preventing electrolyte from leaking out between ~.
t the sleeve and the sealing material. The upper end portion 8 of the sleeve extends out of the sealing material to form an annular portion with internal sealing surface 9, this surface forming part of the internal surface 4 of the sealing element and intended for rigid metallic connection to the post 6.
In accordance with the invention, the sealing material 2 is resilient and is provided with an external bearing surface 3 which is in movable and sealing contact with the battery cover 5. The resilient material 2 can also be treated so that it is given extremely good sealing properties against the metal sleeve 1.
The material 2 preferably consists of rubber, while both metal sleeve 1 and the surface of the post 6 are usually made of lead.
The pole bushing according to Figs. 1 and 2 is rigidly connected to the post 6, as shown on Fig. 3, by welding the interior sealing surface 9 of the annular portion 8 of the sleeve 1 against the post 6, which provides a completely liquid-tight metallic connection.
In accordance with the invention the sealing element and the post will form a rigid body which is movable relative to the cover when subject to electrochemical expansion during o-peration of the battery, whereas movements between the lead and the rubber are completely eliminated. This is contrary to the conventional application of rubber sealings in battery covers, where the post can move relative to the seal, and where the surface of the lead is exposed to corrosive attack from the electrolyte, signifying considerable risk of leakage between the post and the rubber seal. This risk is eliminated in the inventive bushing. The ad-herence between the rubber material and the lead sleeve can be considerably increased if the rubber is vulcanized before assembly with the sleeve, thereby i~r!
enhancing the sealing properties.
The cover is usually made of plastics material and is provided with a _ seat 10, in which the sealing element is axially displaceable while maintaining a good seal between the cover 5 and the sealing material 2. A pole shoe 11 is ~ ~S~3~
connected to the external end of the post 6 by means of a nut 12. The inner po~tion of the post (not shown) is rigidly connected in a conventional manner to the electrode plates of the battery via a pole connection and when the sealing element has been welded to the post it will participate in the movements of the post. Since the bushing is axially displaceable in the battery cover it will not be subjected to harmful stresses or damage.
Pole bushing for batteries The present invention relates to a pole bushing for batteries, particularly of the kind leading through the battery cover and forming a seal between the cover and the battery post.
Such bushings comprise a metal sleeve which is provided with grooves and which is embedded in a sealing material to form a sealing element with an external surface which bears against the battery cover and with an internal surface which at least partially is in close and immovable contact withthe post passing through the cover. One end portion of the metal sleeve extends out of the sealing material and forms an annular portion, the internal surface of which forms part of the internal surface of the sealing element and is meant to be at least partially in rigid metallic connection with the post.
A pole bushing for batteries of the kind mentioned above is previously known, for instance from SE-PA 7701558-4~ and the object with this known device is to provide a pole bushing which can move axially together with the post and simultaneously provide an effective seal between the battery cover and the post.In structures kno~m hitherto, the post, which is rigidly cormected via a pole connection to the electrode plates, is also rigidly connected to the battery cover. However, the electrode plates expand dué to ageing during operation, thus causing displacement of the post, which could damage the battery cover and result in leakage of the electrolyte. However, these drawbacks have been ~.
eliminated with a pole bushing which is displaceable in the cover and provided with means for ensuring a fluid-tight seal between the pole bushing and the cover. ~-However, the pole bushing according to the Swedish patent application mentioned above is burdened with certain drawbacks, since the material used in _ the sealing element will only perlnit an effective seal against the metallic sleeve but not against the battery cover. This means that either the pole bushing ~.
~ ~ s ~
or the battery cover must be provided with a recess for a sealing ring made from a material capable of providing an effective seal between the cover and the bushing.
One object of the present invention is to provide a simple structure for a pole bushing by eliminating the recess and the sealing ring and nevertheless maintaining an effective seal between the cover and the bushing.
In accordance with the invention this object is reali~ed by the sealing ` material having resilient properties and by the external surface of the sealing element being shaped for movable and sealing contact with the battery cover for forming a sealing surface against the cover.
In a suitable embodiment the sealing material is made of rubber, whereas the sleeve and the surface of the post are made of lead.
The invention will best be understood from the following description of a suitable embodiment, when read in conjunction with the accompanying drawings on which Fig. 1 is an end view of the pole bushing in accordance with the invention, Fig. 2 is a cross sectional view of the pole bushing according to Fig. 1, and Fig. 3 is a cross-sectional view through a cover with a pole bushing according to Figs. 1 and 2, the cover being metallically connected to a post.
The pole bushing shown in Figs. 1 and 2 comprises a sleeve 1 of metal~
which is embedded in a sealing material 2 to form a sealing element with external 3 and internal ~ surfaces for making direct contact with the battery cover 5 and a post 6 extending through the cover 5 (see Fig. 3). The metal sleeve 1 is suitably provided with grooves 7 or serrations to increase the sealing distance _ ~ for contact between the metal sleeve 1 and the sealing material 2, thereby increasing the sealing effect and preventing electrolyte from leaking out between ~.
t the sleeve and the sealing material. The upper end portion 8 of the sleeve extends out of the sealing material to form an annular portion with internal sealing surface 9, this surface forming part of the internal surface 4 of the sealing element and intended for rigid metallic connection to the post 6.
In accordance with the invention, the sealing material 2 is resilient and is provided with an external bearing surface 3 which is in movable and sealing contact with the battery cover 5. The resilient material 2 can also be treated so that it is given extremely good sealing properties against the metal sleeve 1.
The material 2 preferably consists of rubber, while both metal sleeve 1 and the surface of the post 6 are usually made of lead.
The pole bushing according to Figs. 1 and 2 is rigidly connected to the post 6, as shown on Fig. 3, by welding the interior sealing surface 9 of the annular portion 8 of the sleeve 1 against the post 6, which provides a completely liquid-tight metallic connection.
In accordance with the invention the sealing element and the post will form a rigid body which is movable relative to the cover when subject to electrochemical expansion during o-peration of the battery, whereas movements between the lead and the rubber are completely eliminated. This is contrary to the conventional application of rubber sealings in battery covers, where the post can move relative to the seal, and where the surface of the lead is exposed to corrosive attack from the electrolyte, signifying considerable risk of leakage between the post and the rubber seal. This risk is eliminated in the inventive bushing. The ad-herence between the rubber material and the lead sleeve can be considerably increased if the rubber is vulcanized before assembly with the sleeve, thereby i~r!
enhancing the sealing properties.
The cover is usually made of plastics material and is provided with a _ seat 10, in which the sealing element is axially displaceable while maintaining a good seal between the cover 5 and the sealing material 2. A pole shoe 11 is ~ ~S~3~
connected to the external end of the post 6 by means of a nut 12. The inner po~tion of the post (not shown) is rigidly connected in a conventional manner to the electrode plates of the battery via a pole connection and when the sealing element has been welded to the post it will participate in the movements of the post. Since the bushing is axially displaceable in the battery cover it will not be subjected to harmful stresses or damage.
Claims (2)
1. A pole bushing for a lead acid battery of the type having a cover and a lead post connected to electrode plates and passing through the cover, said bushing comprising:
a lead sleeve provided with grooves and embedded in an elastic rubber sealing material to form therewith a sealing element having an extended sealing path therewithin;
one end of said sleeve projecting beyond the sealing material and being rigidly connected to said lead post so that said lead post and said sealing element are rigidly and immovably interconnected for common movement in the axial direction of said post;
said sealing element including:
an internal surface defined partially by said elastic rubber sealing material and partially by an internal surface of said one end of said lead sleeve, said internal surface of said sealing element being in close and immovable contact with the lead post; and an external surface slidingly bearing against the battery cover permitting said sealing element and said post to move re-lative to the battery cover said external surface of said sealing element being defined by said elastic rubber sealing material which constitutes the sole fluid seal between the cover and the sealing element.
a lead sleeve provided with grooves and embedded in an elastic rubber sealing material to form therewith a sealing element having an extended sealing path therewithin;
one end of said sleeve projecting beyond the sealing material and being rigidly connected to said lead post so that said lead post and said sealing element are rigidly and immovably interconnected for common movement in the axial direction of said post;
said sealing element including:
an internal surface defined partially by said elastic rubber sealing material and partially by an internal surface of said one end of said lead sleeve, said internal surface of said sealing element being in close and immovable contact with the lead post; and an external surface slidingly bearing against the battery cover permitting said sealing element and said post to move re-lative to the battery cover said external surface of said sealing element being defined by said elastic rubber sealing material which constitutes the sole fluid seal between the cover and the sealing element.
2. The pole bushing recited in Claim 1 wherein the elastic rubber sealing material is a pre-vulcanized material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7908222-8 | 1979-10-04 | ||
| SE7908222A SE7908222L (en) | 1979-10-04 | 1979-10-04 | POLGENOMFORING |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1158306A true CA1158306A (en) | 1983-12-06 |
Family
ID=20338967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000361194A Expired CA1158306A (en) | 1979-10-04 | 1980-09-29 | Pole bushing for batteries |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US4410610A (en) |
| JP (1) | JPS5659454A (en) |
| AT (1) | AT382479B (en) |
| BE (1) | BE885520A (en) |
| CA (1) | CA1158306A (en) |
| CH (1) | CH653484A5 (en) |
| DE (1) | DE3037143A1 (en) |
| DK (1) | DK155261C (en) |
| ES (1) | ES495569A0 (en) |
| FI (1) | FI803091A7 (en) |
| FR (1) | FR2466867A1 (en) |
| GB (1) | GB2062940B (en) |
| IT (1) | IT1128698B (en) |
| NL (1) | NL8005430A (en) |
| NO (1) | NO152432C (en) |
| SE (1) | SE7908222L (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2123205A (en) * | 1982-07-16 | 1984-01-25 | Allied Corp | Sliding battery post seal |
| JPS5928958U (en) * | 1982-08-17 | 1984-02-23 | 古河電池株式会社 | Pole sealing part of lead-acid battery |
| DE3230628C1 (en) * | 1982-08-18 | 1983-12-29 | Accumulatorenfabrik Sonnenschein GmbH, 6470 Büdingen | Method for producing a gas-tight and fluid-tight terminal seal of a lead-acid accumulator, and a terminal seal produced according to this method |
| DE3236370A1 (en) * | 1982-10-01 | 1984-04-05 | Varta Batterie Ag, 3000 Hannover | GAS- AND LIQUID-TIGHT POLE SEALING FOR ELECTRIC ACCUMULATORS, ESPECIALLY LEAD ACCUMULATORS |
| DE8235188U1 (en) * | 1982-12-15 | 1983-06-09 | Accumulatorenfabrik Sonnenschein GmbH, 6470 Büdingen | GAS- AND LIQUID-TIGHT SEALING OF THE METAL POLE OF A BATTERY |
| FR2651606B1 (en) * | 1989-09-07 | 1996-05-31 | Accumulateurs Fixes | TERMINAL FOR ACCUMULATORS. |
| DE4212214A1 (en) * | 1992-04-08 | 1993-10-14 | Hagen Batterie Ag | Pole feed-through for accumulator cells |
| DE9412946U1 (en) * | 1994-08-11 | 1995-12-07 | Robert Bosch Gmbh, 70469 Stuttgart | Anti-vibration bushing |
| DE10301043B3 (en) * | 2003-01-13 | 2004-05-27 | Vb Autobatterie Gmbh | Automobile battery with fluid-tight and gas-tight battery pole having fluid-tight and gas-tight seal and electrical connection between pole shaft and pole sleeve |
| DE102005063540B4 (en) * | 2005-09-27 | 2015-10-01 | Johnson Controls Autobatterie Gmbh & Co. Kgaa | Lead acid battery and plastic battery cover |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2100921A (en) * | 1932-09-22 | 1937-11-30 | Willard Storage Battery Co | Storage battery |
| US2066597A (en) * | 1934-06-21 | 1937-01-05 | Electric Storage Battery Co | Terminal post assembly |
| GB585302A (en) | 1945-02-16 | 1947-02-04 | Britannia Batteries Ltd | Improvements in alkaline electric batteries or accumulators |
| DE857510C (en) * | 1950-01-18 | 1952-12-01 | Bosch Gmbh Robert | Terminal for collector batteries |
| US2717273A (en) * | 1953-04-14 | 1955-09-06 | Globe Union Inc | Bushing for batteries and the like |
| US3064068A (en) * | 1959-10-23 | 1962-11-13 | Stauffer Chemical Co | Battery terminal |
| DE2064547C3 (en) * | 1970-12-30 | 1974-04-25 | Varta Batterie Ag, 3000 Hannover | Terminal bushing for accumulators and process for their production |
| IT1054991B (en) | 1975-03-24 | 1981-11-30 | Varta Batterie | PASSAGE OF TERMINALS FOR ACCUMULATORS |
| DE7520197U (en) * | 1975-06-25 | 1976-09-30 | Varta Batterie Ag, 3000 Hannover | ELECTRIC ACCUMULATOR, IN PARTICULAR LEAD ACCUMULATOR FOR VEHICLE BATTERIES |
| JPS5270336A (en) * | 1975-12-09 | 1977-06-11 | Yuasa Battery Co Ltd | Battery |
| SE442155B (en) * | 1977-02-11 | 1985-12-02 | Nordiska Ackumulator Fabriker | POLBULTS THROUGH THE LOCK FOR THE HOUSING WITH AN ELECTRIC ACCUMULATOR |
| JPS547293U (en) * | 1977-06-17 | 1979-01-18 |
-
1979
- 1979-10-04 SE SE7908222A patent/SE7908222L/en not_active Application Discontinuation
-
1980
- 1980-09-17 AT AT0465680A patent/AT382479B/en not_active IP Right Cessation
- 1980-09-22 JP JP13087580A patent/JPS5659454A/en active Pending
- 1980-09-24 US US06/190,335 patent/US4410610A/en not_active Expired - Lifetime
- 1980-09-25 GB GB8030932A patent/GB2062940B/en not_active Expired
- 1980-09-26 DE DE19803037143 patent/DE3037143A1/en active Granted
- 1980-09-29 CA CA000361194A patent/CA1158306A/en not_active Expired
- 1980-09-30 FI FI803091A patent/FI803091A7/en not_active Application Discontinuation
- 1980-09-30 NL NL8005430A patent/NL8005430A/en not_active Application Discontinuation
- 1980-10-01 FR FR8021059A patent/FR2466867A1/en active Granted
- 1980-10-02 ES ES495569A patent/ES495569A0/en active Granted
- 1980-10-03 DK DK419280A patent/DK155261C/en not_active IP Right Cessation
- 1980-10-03 NO NO802932A patent/NO152432C/en unknown
- 1980-10-03 IT IT49818/80A patent/IT1128698B/en active
- 1980-10-03 BE BE0/202321A patent/BE885520A/en not_active IP Right Cessation
- 1980-10-06 CH CH7454/80A patent/CH653484A5/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NO802932L (en) | 1981-04-06 |
| NL8005430A (en) | 1981-04-07 |
| FI803091A7 (en) | 1981-04-05 |
| ES8106635A1 (en) | 1981-06-16 |
| GB2062940A (en) | 1981-05-28 |
| DK155261C (en) | 1989-07-24 |
| DK155261B (en) | 1989-03-13 |
| CH653484A5 (en) | 1985-12-31 |
| IT1128698B (en) | 1986-06-04 |
| BE885520A (en) | 1981-02-02 |
| GB2062940B (en) | 1983-11-16 |
| ES495569A0 (en) | 1981-06-16 |
| ATA465680A (en) | 1986-07-15 |
| DK419280A (en) | 1981-04-05 |
| DE3037143A1 (en) | 1981-04-16 |
| FR2466867A1 (en) | 1981-04-10 |
| IT8049818A0 (en) | 1980-10-03 |
| JPS5659454A (en) | 1981-05-22 |
| US4410610A (en) | 1983-10-18 |
| NO152432B (en) | 1985-06-17 |
| NO152432C (en) | 1985-09-25 |
| SE7908222L (en) | 1981-04-05 |
| FR2466867B1 (en) | 1984-09-14 |
| AT382479B (en) | 1987-02-25 |
| DE3037143C2 (en) | 1989-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 20001206 |