FR2638901A1 - Battery of cylindrical electrochemical generators - Google Patents

Battery of cylindrical electrochemical generators Download PDF

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Publication number
FR2638901A1
FR2638901A1 FR8814445A FR8814445A FR2638901A1 FR 2638901 A1 FR2638901 A1 FR 2638901A1 FR 8814445 A FR8814445 A FR 8814445A FR 8814445 A FR8814445 A FR 8814445A FR 2638901 A1 FR2638901 A1 FR 2638901A1
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FR
France
Prior art keywords
battery
cover
spring
generator
negative terminal
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.)
Granted
Application number
FR8814445A
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French (fr)
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FR2638901B1 (en
Inventor
Robert Lievin
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.)
WONDER
Compagnie Industrielle des Piles Electriques CIPEL SA
Original Assignee
WONDER
Compagnie Industrielle des Piles Electriques CIPEL SA
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Filing date
Publication date
Application filed by WONDER, Compagnie Industrielle des Piles Electriques CIPEL SA filed Critical WONDER
Priority to FR8814445A priority Critical patent/FR2638901B1/en
Publication of FR2638901A1 publication Critical patent/FR2638901A1/en
Application granted granted Critical
Publication of FR2638901B1 publication Critical patent/FR2638901B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/522—Inorganic material
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
    • 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

Abstract

Battery of cylindrical electrochemical generators including in a case 1, divided into compartments and closed by a cover 2, a plurality of generators 3, 4, 5, 6 connected together in parallel or in series by metal connections 27, 27', 28, 28', 29, 29', ending moreover at two terminals taking the form of two spiral metal springs 21, 40.

Description

Batterie de générateurs électrochimiques cylindriques
La présente invention concerne une batterie de générateurs électrochimiques cylindriques comportant dans un bac, compartimenté en alvéoles et fermé par un couvercle, une pluralité de générateurs reliés entre eux en parallèle ou en série par des connexions métalliques aboutissant par ailleurs à deux bornes émergeant du couvercle ; ces deux bornes apparaissent généralement sous la forme de deux ressorts métalliques spiralés.Battery of cylindrical electrochemical generators
The present invention relates to a battery of cylindrical electrochemical generators comprising, in a tank, compartmentalized in cells and closed by a cover, a plurality of generators connected together in parallel or in series by metal connections also leading to two terminals emerging from the cover; these two terminals generally appear in the form of two spiral metal springs.

On connaît notamment par le brevet britannique GB-A-1 331 800 et par le brevet français FR-A- 2 418 966 divers arrangements de connexions électriques internes entre des piles sèches cylindriques ; pour chaque pile la borne négative est constituée par le godet lui-même et la borne positive est un plot situé en position centrale sur une face extrême, la face supérieure dans la position normale d'utilisation. Ces arrangements sont complexes et coûteux ; ils doivent en outre supporter des vibrations et des chocs conformément aux normes en vigueur. We know in particular from the British patent GB-A-1 331 800 and from the French patent FR-A- 2 418 966 various arrangements of internal electrical connections between cylindrical dry cells; for each battery, the negative terminal is constituted by the cup itself and the positive terminal is a stud situated in the central position on an extreme face, the upper face in the normal position of use. These arrangements are complex and expensive; they must also withstand vibrations and shocks in accordance with the standards in force.

La présente invention a pour but de réaliser une batterie de tels générateurs dont les connexions électriques internes sont simplifiées vis-à-vis des dispositions antérieures, tout en permettant de répondre aux exigences en matière de tenue mécanique. The present invention aims to achieve a battery of such generators whose internal electrical connections are simplified vis-à-vis the previous provisions, while allowing to meet the requirements in terms of mechanical strength.

La présente invention a pour objet une batterie de générateurs électrochimiques comportant dans un bac, fermé par un couvercle et compartimenté en alvéoles par des cloisons, une pluralité de générateurs cylindriques, un par alvéole, chaque générateur ayant une borne positive sur sa face supérieure, et une face latérale constituant une borne négative, des lames métalliques de connexion reliant électriquement lesdits générateurs deux à deux, deux ressorts émergeant dudit couvercle et constituant respectivement la borne positive et la borne négative de ladite batterie ; cette batterie est caractérisée par le fait que le ressort constituant ladite borne négative de la batterie comporte - une portion inférieure à plusieurs spires dont le diamètre est ajusté de manière à la coincer à l'intérieur dudit bac entre une face latérale d'un générateur et les cloisons de l'alvéole qui le contient, - une portion intermédiaire de diamètre supérieur à celui de la portion inférieure et constituant pour ledit ressort un appui sur la face supérieure desdites cloisons, - et une portion tronconique dont les spires les plus larges viennent en appui contre la face interne du couvercle, l'axe de ladite portion inférieure du ressort étant distinct de celui de la partie dudit ressort extérieure audit bac, mais parallèle à lui. The subject of the present invention is a battery of electrochemical generators comprising, in a tank, closed by a cover and compartmentalized in cells by partitions, a plurality of cylindrical generators, one per cell, each generator having a positive terminal on its upper face, and a side face constituting a negative terminal, metallic connection blades electrically connecting said generators two by two, two springs emerging from said cover and constituting respectively the positive terminal and the negative terminal of said battery; this battery is characterized by the fact that the spring constituting said negative terminal of the battery comprises - a portion smaller than several turns whose diameter is adjusted so as to wedge it inside said tank between a lateral face of a generator and the partitions of the cell which contains it, - an intermediate portion of diameter greater than that of the lower portion and constituting for said spring a support on the upper face of said partitions, - and a frustoconical portion whose widest turns come in bearing against the internal face of the cover, the axis of said lower portion of the spring being distinct from that of the part of said spring external to said tank, but parallel to it.

Selon une première variante de réalisation, lesdites lames métalliques de connexion sont constituées chacune d une lame pliée en équerre dont une branche est solidarisée à une borne positive d'un générateur et dont l'autre branche est coincée entre une cloison et la borne négative cylindrique du générateur adjacent. According to a first alternative embodiment, said metal connection blades each consist of a blade folded at an angle, one branch of which is secured to a positive terminal of a generator and the other branch of which is wedged between a partition and the cylindrical negative terminal of the adjacent generator.

A titre d'exemple, la solidarisation est effectuée par soudage ou encliquetage. For example, the joining is carried out by welding or snap-fastening.

Selon une seconde variante de réalisation, lesdites lames métalliques de connexion sont fixées dans des nervures prévues sur la face interne dudit couvercle. According to a second alternative embodiment, said metal connection blades are fixed in ribs provided on the internal face of said cover.

D'autres caractéristiques et des avantages de la présente invention apparaîtront au cours de la description suivante de modes de réalisation donnés à titre illustratif mais nullement limitatif. Dans le dessin annexé - La figure 1 est une vue schématique en perspective éclatée d'une batterie de piles selon l'invention. Other characteristics and advantages of the present invention will appear during the following description of embodiments given by way of illustration but in no way limitative. In the accompanying drawing - Figure 1 is a schematic exploded perspective view of a battery of batteries according to the invention.

- La figure 2 est une vue schématique en perspective d'un ressort formant la borne négative de la batterie de la figure 1.- Figure 2 is a schematic perspective view of a spring forming the negative terminal of the battery of Figure 1.

- La figure 3 est une vue schématique en élévation du ressort de la figure 2.- Figure 3 is a schematic elevational view of the spring of Figure 2.

- La figure 4 est une vue schématique en perspective éclatée d'une variante de batterie de piles selon l'invention.- Figure 4 is a schematic exploded perspective view of a variant battery cell according to the invention.

- La figure 5 est une variante d'un détail de réalisation de la pile de la figure 4.FIG. 5 is a variant of an embodiment detail of the cell of FIG. 4.

La batterie de la figure 1 comporte un bottier formé d'un bac 1 en matière plastique fermé par un couvercle 2 en un même matériau. Dans cet exemple le bac 1 est parallélépipédique et divisé par des cloisons 10 en quatre alvéoles 13, 14, 15, 16 contenant chacun une pile 3, 4, 5, 6. The battery of Figure 1 comprises a shoemaker formed of a tray 1 of plastic closed by a cover 2 of the same material. In this example, the tray 1 is parallelepipedic and divided by partitions 10 into four cells 13, 14, 15, 16 each containing a stack 3, 4, 5, 6.

Soient 23, 24, 25, 26 leurs bornes positives et 33, 34, 35, 36 les faces latérales de leurs godets négatifs. Let 23, 24, 25, 26 be their positive terminals and 33, 34, 35, 36 the side faces of their negative cups.

Le pôle positif 23 de la pile 3 est solidarisé au ressort 21 de forme terminale sensiblement conique, destiné à passer à travers un orifice 7 prévu dans le couvercle 2, et à constituer la borne positive de la batterie. The positive pole 23 of the battery 3 is secured to the spring 21 of substantially conical terminal shape, intended to pass through an orifice 7 provided in the cover 2, and to constitute the positive terminal of the battery.

La face interne du couvercle 2 est muni de nervures 17., 18, 19 destinées à caler des lames métalliques élastiques pour la connexion électrique entre les piles. Ainsi la lame bloquée dans la nervure 17 a une portion 27 qui viendra au contact du godet 33 le long d'une cloison 10' et une portion 27' qui viendra en appui sur le plot 24 ; la lame bloquée dans la nervure 18 a une portion 28 qui viendra au contact du godet 34 le long d'une cloison 10' et une portion 28' qui viendra en appui sur le plot 25 ; la lame bloquée dans la nervure 19 a une portion 29 qui viendra au contact du godet 35 le long d'une cloison 10' et une portion 29' qui viendra au contact du plot 26. The internal face of the cover 2 is provided with ribs 17, 18, 19 intended to wedge elastic metal blades for the electrical connection between the batteries. Thus the blade locked in the rib 17 has a portion 27 which will come into contact with the bucket 33 along a partition 10 'and a portion 27' which will come to bear on the stud 24; the blade locked in the rib 18 has a portion 28 which will come into contact with the bucket 34 along a partition 10 'and a portion 28' which will come to bear on the stud 25; the blade locked in the rib 19 has a portion 29 which will come into contact with the bucket 35 along a partition 10 'and a portion 29' which will come into contact with the stud 26.

Selon l'invention on utilise pour réaliser la borne négative de la batterie un ressort 40 de forme très particulière apparaissant en entier dans les figures 2 et 3. Il comporte une portion inférieure 41 de diamètre tel qu'elle est coincée entre deux cloisons 10 et la paroi latérale du godet 36, chaque spire assurant un point de contact électrique ; la portion 42 suivant la portion 41 présente un diamètre légèrement supérieur à celui de la portion 41 pour permettre un appui sur les faces supérieures des cloisons 10 ; la portion 43 est formée par au moins une spire de diamètre supérieur à celui des spires précédentes pour venir en appui contre le couvercle 2 autour de l'ouverture 8 et être bloquée par la collerette 9 ; la portion extrême 44 sensiblement en tronc de cône traverse le couvercle par l'ouverture 8 et sert de borne négative à la batterie. According to the invention, a spring 40 of very specific shape is used to make the negative terminal of the battery, appearing entirely in FIGS. 2 and 3. It has a lower portion 41 of diameter such that it is wedged between two partitions 10 and the side wall of the cup 36, each turn providing an electrical contact point; the portion 42 along the portion 41 has a diameter slightly greater than that of the portion 41 to allow support on the upper faces of the partitions 10; the portion 43 is formed by at least one turn of diameter greater than that of the preceding turns to come into abutment against the cover 2 around the opening 8 and be blocked by the flange 9; the extreme portion 44 substantially in a truncated cone passes through the cover through the opening 8 and serves as a negative terminal for the battery.

Il faut remarquer que la portion 41 est excentrée par rapport aux portions coaxiales 43, 44 qui sont dans l'axe de la batterie. It should be noted that the portion 41 is eccentric with respect to the coaxial portions 43, 44 which are in the axis of the battery.

Dans la figure 4 montrant une variante de batterie selon l'invention, on retrouve le même bac 1 avec ses cloisons 10, ses piles 3, 4, 5, 6, et ses deux bornes 21 et 40. Les trois lames de connexion 50 entre deux piles adjacentes ne sont plus liées au couvercle. Elles sont formées chacune d'une lame métallique élastique pliée en équerre dont une branche est soudée à la borne 24, 25 ou 26 et dont l'autre branche est plaquée contre une cloison 10 et la paroi latérale d'un godet 33, 34 ou 35. In Figure 4 showing a variant of battery according to the invention, there is the same tray 1 with its partitions 10, its batteries 3, 4, 5, 6, and its two terminals 21 and 40. The three connection blades 50 between two adjacent batteries are no longer linked to the cover. They are each formed of an elastic metal blade folded in a square, one branch of which is welded to terminal 24, 25 or 26 and the other branch of which is pressed against a partition 10 and the side wall of a bucket 33, 34 or 35.

En variante, comme cela apparaît dans la figure 5, les lames 50 ne sont pas soudées mais encliquetées sur les bornes positives des piles. Alternatively, as shown in Figure 5, the blades 50 are not welded but snapped onto the positive terminals of the batteries.

Les piles munies chacune de leur lame 50 sont introduites successivement dans leurs alvéoles, puis les bornes 21 et 40 sont mises en place et on fixe le couvercle 52 sur le bac 1. Ce couvercle 52 est muni de deux ouvertures 7 et 8 et d'une collerette 9. On aperçoit en outre deux capuchons 53 garantissant la non-utilisation de la batterie. The batteries each provided with their blade 50 are successively introduced into their cells, then the terminals 21 and 40 are put in place and the cover 52 is fixed to the tank 1. This cover 52 is provided with two openings 7 and 8 and a flange 9. We also see two caps 53 ensuring the non-use of the battery.

Des nervures 54 prévues dans le couvercle 52 permettent d'assurer un meilleur blocage des piles dans le bac 1.Ribs 54 provided in the cover 52 ensure better blocking of the batteries in the tank 1.

On aperçoit dans la figure 4 des pattes en matière plastique frangibles destinées à protéger les deux bornes 21 et 40 avant toute utilisation. We see in Figure 4 frangible plastic legs intended to protect the two terminals 21 and 40 before use.

Bien entendu l'invention n'est pas limitée aux deux modes de réalisation donnés. On pourra, sans sortir du cadre de l'invention, remplacer tout moyen par un moyen équivalent.  Of course, the invention is not limited to the two embodiments given. Without departing from the scope of the invention, any means can be replaced by equivalent means.

Claims (4)

REVENDICATIONS 1/ Batterie de générateurs électrochimiques comportant dans un bac, fermé par un couvercle et compartimenté en alvéoles par des cloisons, une pluralité de générateurs cylindriques, un par alvéole, chaque générateur ayant une borne positive sur sa face supérieure, et une face latérale constituant une borne négative, des lames métalliques de connexion reliant électriquement lesdits générateurs deux à deux, deux ressorts émergeant dudit couvercle et constituant respectivement la borne positive et la borne négative de ladite batterie, batterie caractérisée par le fait que le ressort constituant ladite borne négative de la batterie comporte - une portion inférieure à plusieurs spires dont le diamètre est ajusté de manière à la coincer à l'intérieur dudit bac entre une face latérale d'un générateur et les cloisons de l'alvéole qui le contient, - une portion intermédiaire de diamètre supérieur à celui de la portion inférieure et constituant pour ledit ressort un appui sur la face supérieure desdites cloisons, - et une portion tronconique dont les spires les plus larges viennent en appui contre la face interne du couvercle, l'axe de ladite portion inférieure du ressort étant distinct de celui de la partie dudit ressort extérieure audit bac, mais parallèle à lui.1 / Battery of electrochemical generators comprising in a tank, closed by a cover and compartmentalized in cells by partitions, a plurality of cylindrical generators, one per cell, each generator having a positive terminal on its upper face, and a lateral face constituting a negative terminal, metal connection blades electrically connecting said generators two by two, two springs emerging from said cover and constituting respectively the positive terminal and the negative terminal of said battery, battery characterized in that the spring constituting said negative terminal of the battery comprises - a portion lower than several turns whose diameter is adjusted so as to wedge it inside said tank between a lateral face of a generator and the partitions of the cell which contains it, - an intermediate portion of greater diameter to that of the lower portion and constituting for said spring a support on the upper face of said partitions, - and a frustoconical portion whose largest turns come to bear against the internal face of the cover, the axis of said lower portion of the spring being distinct from that of the part of said outer spring audit bac, but parallel to it. 2/ Batterie de générateurs électrochimiques selon la revendication î; caractérisée par le fait que lesdites lames métalliques de connexion sont constituées chacune d'une lame pliée en équerre dont une branche est solidarisée à une borne positive d'un générateur et dont l'autre branche est coincée entre une cloison et la borne négative cylindrique du générateur adjacent. 2 / battery of electrochemical generators according to claim 1; characterized by the fact that said metallic connection blades each consist of a blade bent at an angle, one branch of which is secured to a positive terminal of a generator and the other branch of which is wedged between a partition and the cylindrical negative terminal of the adjacent generator. 3/ Batterie de générateurs électrochimiques selon la revendication 2, caractérisée par le fait que la solidarisation est effectuée par soudage ou encliquetage.3 / battery of electrochemical generators according to claim 2, characterized in that the joining is carried out by welding or snap-fastening. 4/ Batterie de générateurs électrochimiques selon la revendication 2, caractérisée par le fait que lesdites lames métalliques de connexion sont fixées dans des nervures prévues sur la face interne dudit couvercle. 4 / battery of electrochemical generators according to claim 2, characterized in that said metal connection blades are fixed in ribs provided on the internal face of said cover.
FR8814445A 1988-11-04 1988-11-04 BATTERY OF CYLINDRICAL ELECTROCHEMICAL GENERATORS Expired - Fee Related FR2638901B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8814445A FR2638901B1 (en) 1988-11-04 1988-11-04 BATTERY OF CYLINDRICAL ELECTROCHEMICAL GENERATORS

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Application Number Priority Date Filing Date Title
FR8814445A FR2638901B1 (en) 1988-11-04 1988-11-04 BATTERY OF CYLINDRICAL ELECTROCHEMICAL GENERATORS

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FR2638901A1 true FR2638901A1 (en) 1990-05-11
FR2638901B1 FR2638901B1 (en) 1991-05-10

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2355197A (en) * 1941-12-10 1944-08-08 Marathon Battery Company Battery construction
GB1447503A (en) * 1973-07-09 1976-08-25 Crompton Parkinson Ltd Electric cells and batteries
FR2418966A1 (en) * 1978-03-03 1979-09-28 Berec Group Ltd ELECTRIC BATTERY AND METHOD FOR MANUFACTURING INTERNAL CONNECTIONS FOR THIS BATTERY

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2355197A (en) * 1941-12-10 1944-08-08 Marathon Battery Company Battery construction
GB1447503A (en) * 1973-07-09 1976-08-25 Crompton Parkinson Ltd Electric cells and batteries
FR2418966A1 (en) * 1978-03-03 1979-09-28 Berec Group Ltd ELECTRIC BATTERY AND METHOD FOR MANUFACTURING INTERNAL CONNECTIONS FOR THIS BATTERY

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