EP0018398A1 - Batteries d'accumulateurs electriques - Google Patents

Batteries d'accumulateurs electriques

Info

Publication number
EP0018398A1
EP0018398A1 EP79900773A EP79900773A EP0018398A1 EP 0018398 A1 EP0018398 A1 EP 0018398A1 EP 79900773 A EP79900773 A EP 79900773A EP 79900773 A EP79900773 A EP 79900773A EP 0018398 A1 EP0018398 A1 EP 0018398A1
Authority
EP
European Patent Office
Prior art keywords
electric storage
storage battery
electrodes
stack
partitions
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Withdrawn
Application number
EP79900773A
Other languages
German (de)
English (en)
Inventor
Suzanne Warrell
Ian Stuart Laurie
Peter Anthony Cash
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.)
Chloride Group Ltd
Original Assignee
Chloride Group Ltd
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 Chloride Group Ltd filed Critical Chloride Group Ltd
Publication of EP0018398A1 publication Critical patent/EP0018398A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/30—Deferred-action cells
    • H01M6/32—Deferred-action cells activated through external addition of electrolyte or of electrolyte components
    • H01M6/34—Immersion cells, e.g. sea-water cells
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • H01M10/0418—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes with bipolar electrodes
    • 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 electric storage batteries and particularly but not exclusively to sea water activatable batteries and describes an improved form of container construction, and an improved form of separator arrangement.
  • An object of the present invention is to produce a simpler container construction than hitherto available, and a separator arrangement which simplifies assembly of the battery.
  • an electric storage battery is made up of a stack of intercell partitions having at least one pair of opposed edges, referred to herein as the top and bottom edges, juxtaposed to preformed sheets, the said opposed edges being a close fit with the said sheets, but not sealed thereto, the electrodes being enclosed within compartments formed by the partitions, the preformed sheets and means enclosing the opposed faces of the stack and the other pair of opposed sides of the stack.
  • the partitions are preferably of thin sheet form e.g. 0.01 inches or less, e.g. 0.001 to 0.01 inches thick. They may be made of film-forming polymeric material resistant to the electrolyte involved. For sea water electrolyte, cellulose acetate is suitable.
  • the partitions preferably extend beyond the side edges of the electrodes sufficiently for them to be folded over so as to overlap the adjacent partition.
  • the battery preferably has also structural end walls e.g. of preformed sheet material within which the intercell partitions and electrodes are sandwiched.
  • the stack of intercell partitions and electrodes is enclosed within a close fitting preformed box, the top and bottom edges of the intercell partitions and the opposed side edges being located within a distance, A, of not more than 20 thou. (0.5 mm) and especially within 10 thou.
  • the top and bottom ends of the electrodes are preferably each spaced a distance, B, of at least 3 mms from the inside face of the top and bottom walls of the preformed box.
  • the opposed side edges must be made at least to fulfill the same requirements for a close fit, but are preferably made with the sides of the intercell partitions extending out beyond the dimensions required merely for a close fit so that in order for the stack to be fitted into the box they have to be folded over so that each portion overlaps at least the partition of the adjacent cell and preferably also the partition of the next cell as well.
  • the box is preferably made with one side, which will be opposite a face of the stack, open, but in use closed by a wall member, and the stack is inserted sideways through this opening with the overlapped edges of the intercell partitions pointing back towards the said open side. Once the box is full the open side is closed by a wall member clipped, glued or welded or otherwise secured into place.
  • the compartments in the sea-water activatable embodiments of the invention are interconnected by inlet and outlet ducts. These may be formed in the top and bottom walls referred to above and may be formed either in the thickness of the top and bottom walls or preferably as protruberances extend ing outwardly therefrom and disposed transverse to the walls and intermediate the ends of the walls e.g. adjacent or on the median line of the walls.
  • the ducts preferably have a width not in excess of 5B and preferably not more than 20% of the width of the top wall.
  • the electrodes in adjacent cells may be connected directly through the intercell partition e.g. by a mechanical metallic connection such as a staple or rivet engaging conducting portions of both electrodes.
  • the ducts may be formed in the preformed bottom and top sheets they may be formed in the means enclosing the opposed faces of the stack or in the means enclosing the other pair of opposed sides of the stack. These ducts permit access of electrolyte to the cells and escape of gas. In a multi-cell battery the ducts must have access to all parts of the cell. This can be achieved directly or by each intercell partition having apertures in their free ends clear of the electrodes.
  • the electrodes have recesses or chamfers in each of their top and bottom ends and the apertures are located opposite and preferably at least partially within or within these chamfers or recesses spaced from the electrodes.
  • the apertures in adjacent partitions may be located in in-line or staggered relationship.
  • the electrodes in the sea-water activatable embodiment of the invention may consist of a magnesium anode and a lead chloride or silver chloride cathode spaced by suitable separator means e.g. P.V.C. rods or by the preferred separator arrangement described below.
  • suitable separator means e.g. P.V.C. rods or by the preferred separator arrangement described below.
  • the lead chloride cathode active material composition may consist of 1% to 5% by weight organic polymer fibre e.g. polyester fibre, 1% to 5% by weight polymeric, preferably elastomeric, binder e.g. neoprene rubber, optionally up to 0.2% by weight e.g. 0.01% to 0.1% of a wetting agent, the balance of at least 90% being lead chloride.
  • organic polymer fibre e.g. polyester fibre
  • polymeric, preferably elastomeric, binder e.g. neoprene rubber optionally up to 0.2% by weight e.g. 0.01% to 0.1% of a wetting agent, the balance of at least 90% being lead chloride.
  • the lead chloride is preferably present in an amount of 92% to 97%, the fibres in an amount of 1% to 3% and the binder in an amount of 2% to 5%.
  • the fibre preferably has an average fibre length of 1.0 mms and a denier of not thicker than 5.
  • the anodes may consist of a metal anode, e.g. a magnesium anode, and preferably consist of 0.05 to 3.5% by weight manganese preferably
  • manganese e.g. 1.3 - 1.7% manganese, at least 96.3% " by weight magnesium, and preferably not more than 0.2% impurities.
  • a preferred form of separator means comprises separate deposits of electrically nonconducting resin material adhered to discrete localized regions of the metal anode.
  • the resin may be a hot melt adhesive e.g. a polyamide hot melt adhesive.
  • the deposits are preferably dis crete drops having a maximum transverse dimension parallel to the plane of the anode of not more than 10 times their thickness and preferably in the range 2 to 5 times their thickness.
  • the deposits are preferably substantially circular in plan and have a contact angle, C, of not less than 90°, C being the angle between a tangent to the surface of the deposit at its point of contact with the plane on which it rests, and the plane.
  • the deposits are preferably made by de positing the hot resin composition on the anode when it is itself heated so as to prevent chilling of the deposit and to ensure the desired profile and good adhesion.
  • the invention also extends to any electric storage battery having a metal electrode which is spaced from the electrode of opposite polarity in its cell merely by a physical spacer and not by a separator in which the spacing is achieved by discrete localized regions of nonconducting resin adhered to one of the electrodes.
  • Figure 1 is an exploded perspective view just prior to assembly showing a first embodiment in accordance with the invention
  • Figure 2 is a cross-section after assembly prior to fitting the side wall on the line
  • Figure 3 is a cross-section after assembly without the side wall on the line
  • Figure 4 is an exploded perspective view just prior to assembly showing a second embodiment in accordance with the invention
  • Figure 5 is a cross-section after assembly prior to fitting the side wall on the line V of Figure 4;
  • Figure 6 is a cross section after assembly without the side wall on the line VI of Figure 4;
  • Figure 7 is a perspective view in partial cross-section and shows about half the battery, the thickness of the electrodes being exaggerated for easier representation; and Figure 8 is a side view of part of the anode showing the pimple spacer.
  • the battery shown in Figures 1 , 2 and 3 has an injection moulded thermoplastic box as its container having top and bottom walls 10 and 11, side walls 12 and 13 and a back wall 14 all moulded in one piece and a separate front wall 15 adapted to be welded or glued to the open edges of the walls 10, 11, 12 and 13.
  • the top and bottom walls are typically 4.4 cms by 8 cms, the side walls 8.5 cms by 4.4 cms and the front and back walls 8.5 cms by 8 cms.
  • the wall thickness is 1 - 1.5 mm.
  • the front wall 15 has inlet and outlet ducts 17 and 18 providing for ingress of sea water at the bottom of the battery and egress of sea water and gas at the top of the battery.
  • the active component of the battery comprises a stack of positive and negative electrodes, 20, 21 connected to each other by a staple 22 (see figure 7) through the centre of an intercell partition 23, disposed between the two electrodes.
  • a positive electrode. is against the back wall 14 and a positive terminal 26 is lead out through a hole 25 in the wall 10 and a negative terminal 27 is lead out through a hole 28 in the same wall, (see Figure 7).
  • These holes are sealed with resin e.g. epoxy resin after the cell is assembled.
  • the positive and negative electrodes in a cell are separated from each other by P.V.C. rods or preferably by pimples 30 of generally hemispherical shape formed of hot melt adhesive adhered to the metallic anode (see Figures 7 and 8).
  • the intercell partitions 23 are made of sheets of cellulose acetate the top ends 32 and the bottom ends of which are a flush fit to the inside faces of the top and bottom walls 10 and 11 of the box. Each of the top and bottom ends of the partitions are carefully cut to size and superposed in register so that when the stack is placed in the box the maximum spacing is no more than 10 thou. (0.25 mm).
  • the distance 3 from the ends of each of the positive and negative electrodes from the inside faces of the walls 10 and 11 is also carefully controlled so as not to be less than 3 mms so that the leakage pathway from the end of a positive electrode 20 around the end of its partition 23 to the negative electrode is always at least 5-5 mms.
  • the sides of the partitions 23 extend out so that in order for the stack to be fitted into the box they have to be bent over as shown in Figure 2 and Figure 7 and Figure 6 and Figure 1.
  • the bent over portions33 preferably overlap bent over portions of at least the cell above and preferably two cells above.
  • the electrodes have opposite corners cut away in the embodiment shown in Figures 1 to 3.
  • a small hole 34 is formed in the triangular portion 35 of each corner of each partition 23 which is thus left open. These holes 34 register with the inlet and outlet ducts 17 and 18 inthe front face 15 of the box. This is the sole means of electrolyte access to the cells and from one cell to another.
  • the hole 17 or 18 will be the inlet for the sea water while air will escape from the other hole.
  • each electrode having a triangular portion removed from opposed corners and holes 34 being formed therein
  • electrolyte access is from the walls 10 and 11.
  • the holes 17 and 18 in the front wall 15 are dispensed with.
  • the top and bottom walls have transverse channels 17 and 18 protruding outwardly but with an inwardly opening face providing slots 19 , 40, 6 mms e.g. 3 - 9 mms wide opening into the battery and extending across the ends of the intercell partitions.
  • the ends of the channels 19 and 40 are closed at the rear face and open at the front face of the battery.
  • the channels are 3 e.g. 1 - 6 mms deep.
  • the cell next to the wall 14, which optionally (see figure 7) may be spaced therefrom by a sheet of cellulose acetate, consists of a cathode 20, 7.6 cms square and then a sheet 7.6 cms square, of magnesium 0.025 inches thick as the anode 21, separated by four rows of five pimples of hot melt adhesive 30, each 1.5 mms thick, and 6 mms across, from the lead chloride cathode 20, which is 1.4 mm thick.
  • This cathode is separated from the next anode 21 by the cellulose acetate sheet 23 which is 0.004 inches thick.
  • Each cathode consists of an expanded copper mesh current collector 37 to which is adhered the active material composition which can be any suitable lead chloride composition.
  • each cathode 20, except the first one, and each anode 21 is made by removing a patch of active material from the centre of the cathode 20 and stapling the mesh 37 through the sheet 23 to the anode 21. Stapling without removing the patch of active material is also effective. This is done for each pair of cathodes and anodes.
  • the anode terminal 27 is welded to one corner of the anode 21 nearest the wall 15 and passes out of the box through the hole 28 and the cathode terminal 26 is welded to the mesh 37 bared at one corner of the cathode 20 nearest the back wall 14 at the same or opposite corner, and passes out of the box through the hole 25.
  • Example 1 below illustrates a suitable lead chloride cathode active material.
  • Example 1 The active material consists of 96% by weight lead chloride (99.9% pure), 1.5% polyester fibre and 2.5% neoprene rubber.
  • the lead chloride powder, polyester fibre and neoprene rubber, added as an aqueous latex, are then mixed together.
  • the dry crumbly composition is spread in a mould and has the mesh 37 pressed into it.
  • the assembly is then dried at 40 o C.
  • the anodes are preferably made of a magnesium alloy containing 1.52% manganese, remainder magnesium and impurities of less than 0.055%.
  • the battery is assembled as follows:
  • the spacers 30 are formed on each anode 21 bv heating the anode to 80 - 90 o C and then depositing molten drops of hot melt adhesive e.g. at 360°F, 150-160°C on the anode whereby circular pimples about 1 mm thick are formed which adhere well to the anode having a large surface of contact but which interfere very little with electrolyte flow through the cell as compared with conventional P.V.C. rods. Preheating the anode is thought to assist in achieving a good shape for the spacer 30 and good contact.
  • the cellulose acetate intercell partitions are cut to size, each cathode stapled through a partition 23 to an anode having its spacers 30 facing outwardly, care being taken to ensure that the components are correctly positioned as discussed above.
  • the cathode terminal is welded onto the first cathode which is placed in the cell against the inside face of the back wall 14.
  • the stack of electrode pairs are then placed in the box with the side portions 33 of the partitions 23 folded up against the inside face of the side walls 12 and 13 of the box.
  • the remaining electrode pairs are then pushed down into the box so that each pair is overlapped at its edges by the folded over portion 33 of the partition of the previous pair. If desired they can be preassembled into a pack with the overlapped portions welded together e.g. by application of a solvent such as acetone.
  • the anode terminal is then formed. Finally the front face 15 is secured in place e.g. by welding or adhesive and the terminal holes 25 and 28 sealed.
  • the invention is particularly but not exclusively applicable to electric storage batteries activatable by sea-water and with small cells which are used at current drains of up to 30 mA/sq. cm or even 100 mA/sq. cm. for such uses as life jackets where they are stored in a dry condition and are activated by immersion in sea-water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Cell Separators (AREA)

Abstract

Une batterie d'accumulateurs electriques possede des electrodes (20, 21) connectes par l'intermediaire de cloisons en feuilles minces (23) qui sont emboitees dans une boite preformee (10, 11, 12, 13, 14, 15) avec un ajustage serre mais ne sont pas fixees a la boite.
EP79900773A 1978-07-18 1980-02-25 Batteries d'accumulateurs electriques Withdrawn EP0018398A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3022778 1978-07-18
GB7830227 1978-07-18

Publications (1)

Publication Number Publication Date
EP0018398A1 true EP0018398A1 (fr) 1980-11-12

Family

ID=10498492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79900773A Withdrawn EP0018398A1 (fr) 1978-07-18 1980-02-25 Batteries d'accumulateurs electriques

Country Status (7)

Country Link
EP (1) EP0018398A1 (fr)
AU (1) AU4897579A (fr)
CA (1) CA1116692A (fr)
IT (1) IT1118134B (fr)
NO (1) NO792371L (fr)
WO (1) WO1980000285A1 (fr)
ZA (1) ZA793596B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053268A1 (fr) * 1980-12-03 1982-06-09 VARTA Batterie Aktiengesellschaft Accumulateur électrique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538442B1 (fr) * 1982-12-23 1986-02-28 Charbonnages De France Taillant pour foration rotative assistee par jet
FR2689319A1 (fr) * 1992-03-26 1993-10-01 Sorapec Electrode bipolaire pour batterie d'accumulateurs.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2040255A (en) * 1933-10-11 1936-05-12 Gordon Christian Jensen Electric battery
GB549036A (en) * 1941-09-17 1942-11-03 Gen Electric Co Ltd Improvements in electric primary batteries
NL88833C (fr) * 1951-09-28
NL248183A (fr) * 1959-02-10
US3129118A (en) * 1959-05-26 1964-04-14 Servel Inc Reserve electric battery with combined electrode and separator member
US3449820A (en) * 1964-03-17 1969-06-17 Globe Union Inc Method of manufacturing battery assemblies
US4072801A (en) * 1977-04-04 1978-02-07 Globe-Union Inc. Deferred action battery having improved bottom port cover

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8000285A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053268A1 (fr) * 1980-12-03 1982-06-09 VARTA Batterie Aktiengesellschaft Accumulateur électrique

Also Published As

Publication number Publication date
NO792371L (no) 1980-01-21
CA1116692A (fr) 1982-01-19
WO1980000285A1 (fr) 1980-02-21
IT1118134B (it) 1986-02-24
AU4897579A (en) 1980-01-24
ZA793596B (en) 1981-02-25
IT7949783A0 (it) 1979-07-17

Similar Documents

Publication Publication Date Title
US5308718A (en) End block constructions for batteries
US4948681A (en) Terminal electrode
US5288564A (en) Compact, cylindrical, multi-cell seawater battery
US5462816A (en) Air cell
US6312848B1 (en) Electrical rechargeable battery in the form of a button cell
CN112913076A (zh) 智能电池及其锂电芯
US10622640B2 (en) Current collector with integrated leak-proofing means, bipolar battery comprising such a collector
US4022951A (en) Battery construction
US4927722A (en) Separator for starter batteries
NO142977B (no) Batteri.
US4211833A (en) Bipolar battery
US4060669A (en) Flat battery
KR101139016B1 (ko) 다방향성 리드-탭 구조를 가진 리튬 이차 전지
KR20130119457A (ko) 다방향성 리드-탭 구조를 가진 리튬 이차전지
JPH09335U (ja) バッテリ
EP2874197B1 (fr) Conception de batterie et procédé d'assemblage
CN101335340A (zh) 密闭型电池及其制造方法
US4209575A (en) Multi-cell batteries
EP1331678B1 (fr) Batterie prismatique étanche et module de batterie
EP3555935B1 (fr) Boîtier de module de batterie, module de batterie et batterie
US3953238A (en) Multicell seawater battery
CN110176621A (zh) 二次电池
CA1046138A (fr) Batterie rechargeable a plusieurs cadres pour compartimenter la matiere active et des separateurs
EP0018398A1 (fr) Batteries d'accumulateurs electriques
WO2018115836A1 (fr) Batterie

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

Designated state(s): FR

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: 19801121

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LAURIE, IAN STUART

Inventor name: CASH, PETER ANTHONY

Inventor name: WARRELL, SUZANNE