EP0217801A1 - Accumulateur au plomb etanche pour recombinaison de gaz oxygene - Google Patents
Accumulateur au plomb etanche pour recombinaison de gaz oxygeneInfo
- Publication number
- EP0217801A1 EP0217801A1 EP85903437A EP85903437A EP0217801A1 EP 0217801 A1 EP0217801 A1 EP 0217801A1 EP 85903437 A EP85903437 A EP 85903437A EP 85903437 A EP85903437 A EP 85903437A EP 0217801 A1 EP0217801 A1 EP 0217801A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oxygen gas
- battery
- negative
- lead acid
- sealed lead
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/34—Gastight accumulators
- H01M10/342—Gastight lead accumulators
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to sealed lead acid batteries having electrodes for oxygen gas recombination, said electrodes being separated porous separating means in which the electrolyte is absorbed- So-called maintenance-free batteries exist in a plurality of different embodiments to satisfy the special conditions with which a battery is designed to operate.
- the operating conditions are highly determinative to the way in which the cell or the battery is charged.
- the major part of the active material is used, both in th postive and the negative electrode.
- the separators are n completely saturated with electrolyte to permit the oxygen gas developing at the positive electrode to diffuse rapidly through the porous material from the positive to the negative electrode to recombine there.
- the oxygen gas developed at the positive electrode should consequently diffuse to the negative electrode to react rapidly with the active material, whereby lead is converted into lead oxide.
- This reaction means that the negative electrode is partially discharged and is prevente from reaching its completely charged state.
- hydrogen gas also prevented from developing at this electrode. Since the velocity of the oxygen gas recombination at the negative electrode is greater than th velocity of the generation of oxygen gas at the positive electrode, there will be practically no loss of liquid and simultaneously the overpressure in the sealed battery will be: limited..
- the spacing between the negative electrodes is " not filled with electrolyte bu is only intended to enhance the active areas of the electrodes and thereb the recombination effect.
- the object of the present invention is, however, to provide a construction of a maintenance-free battery in which at small current dis ⁇ charges no lock of sulphate ions will occur and which therefore, in view of the capacity are substantially better than conventional sealed batteri having either single or double negative electrodes.
- This object is real zed according to the invention substantially by the fact that a porous separator saturated with electrolyte is disposed between the negative electrodes.
- the acid reservoir between double positive electrodes, but since the oxygen gas is developed at the positive plate the recombination would decrease and the amount * of gas escaping from the cell would increase since only a minor amount of oxygen gas would be able to reach the negative electrode by diffusion in the porous separator. In addition, for a split negative electrode the recombination will be more efficient since a larger active area of the negative electrode is obtained.
- a lead battery is schematically shown, the electrodes being enclosed in an airtight case 1 and the positive 2 and negative 3 electrode are separated by a separator made from porous material 4, in which the electrolyte is absorbed. Since a sealed battery of this type do not permit the occurance of free electrolyte in the cell the porous separator is saturated with acid only up to about 90%.
- the negative electrodes consist of at least two electrode plates 3a and 3b, positioned at a certain distance fr each other, whereby a supply space 5 for the electrolyte is formed which is also absorbed in a porous separator.
- the electrode plates can be provided with openings in order to facil tate the migration of acid from the space between the plates to the positive electrode.
- the oxygen gas generated at the positiv plate will be given good possibilities to reach the negative plate throug the porous separator in order to oxidize the lead to lead oxide.
- the acid surplus between the two negative plates will guarantee a high battery capacity compared to a conventional battery of t ma ntenance-free type.
- the small amount of oxygen gas developed at the positive electrodes which will not immediately reach the adjacent negativ electrodes will cause a certain pressure increase in the case, but this will be possible to maintain at a relatively low level, since the larger areas of these electrodes.
- the distance between the positive and negative electrode plates could be varied but should preferably be about 1 mm.
- the distance between the negative electrodes could be varied depending on the necessary acid reservoir but should normally preferably b between about 1 and 5 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Electromechanical Clocks (AREA)
Abstract
Dans un accumulateur au plomb étanche, au moins une des électrodes négatives (3) est formée avec au moins deux plaques (3a, 3b) d'électrodes. Un séparateur poreux (5) saturé d'électrolyte est disposé entre les deux plaques d'électrodes négatives.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8403704A SE8403704L (sv) | 1984-07-13 | 1984-07-13 | Slutet blybatteri for syrgasrekombination |
SE8403704 | 1984-07-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0217801A1 true EP0217801A1 (fr) | 1987-04-15 |
Family
ID=20356523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85903437A Withdrawn EP0217801A1 (fr) | 1984-07-13 | 1985-07-04 | Accumulateur au plomb etanche pour recombinaison de gaz oxygene |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0217801A1 (fr) |
JP (1) | JPS61502714A (fr) |
DK (1) | DK109986D0 (fr) |
NO (1) | NO860936L (fr) |
SE (1) | SE8403704L (fr) |
WO (1) | WO1986000759A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61179068A (ja) * | 1985-02-04 | 1986-08-11 | Yuasa Battery Co Ltd | 密閉形鉛蓄電池 |
US5175484A (en) * | 1988-09-26 | 1992-12-29 | Power Beat International, Ltd. | Electrical power distribution |
NZ226656A (en) * | 1988-10-21 | 1990-10-26 | Pita Witehira | Laminated electrode plate with electrolyte channels |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE537926A (fr) * | 1952-03-28 | |||
DE1571961B2 (de) * | 1965-03-09 | 1973-01-04 | Robert Bosch Gmbh, 7000 Stuttgart | Gasdicht verschlossener Bleiakkumulator mit antimonfreien Plattengittern |
US4276359A (en) * | 1978-09-01 | 1981-06-30 | Koehler Manufacturing Company | Lead-acid battery with tubular plate electrode |
JPH0677449B2 (ja) * | 1982-03-09 | 1994-09-28 | 三洋電機株式会社 | 鉛蓄電池 |
DE3475586D1 (en) * | 1983-01-13 | 1989-01-12 | Ove Nilsson | Sandwich electrode and a battery comprising the same |
-
1984
- 1984-07-13 SE SE8403704A patent/SE8403704L/xx not_active Application Discontinuation
-
1985
- 1985-07-04 WO PCT/SE1985/000271 patent/WO1986000759A1/fr unknown
- 1985-07-04 JP JP60503237A patent/JPS61502714A/ja active Pending
- 1985-07-04 EP EP85903437A patent/EP0217801A1/fr not_active Withdrawn
-
1986
- 1986-03-10 DK DK109986A patent/DK109986D0/da not_active Application Discontinuation
- 1986-03-12 NO NO860936A patent/NO860936L/no unknown
Non-Patent Citations (1)
Title |
---|
See references of WO8600759A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1986000759A1 (fr) | 1986-01-30 |
SE8403704D0 (sv) | 1984-07-13 |
NO860936L (no) | 1986-03-12 |
DK109986A (da) | 1986-03-10 |
DK109986D0 (da) | 1986-03-10 |
SE8403704L (sv) | 1986-01-14 |
JPS61502714A (ja) | 1986-11-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19870114 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ELGH, RUTGER |