DE2847463A1 - SCHEIDER FOR ELECTRICAL ACCUMULATORS FROM A MICROPOROUS BASE MATERIAL - Google Patents
SCHEIDER FOR ELECTRICAL ACCUMULATORS FROM A MICROPOROUS BASE MATERIALInfo
- Publication number
- DE2847463A1 DE2847463A1 DE19782847463 DE2847463A DE2847463A1 DE 2847463 A1 DE2847463 A1 DE 2847463A1 DE 19782847463 DE19782847463 DE 19782847463 DE 2847463 A DE2847463 A DE 2847463A DE 2847463 A1 DE2847463 A1 DE 2847463A1
- Authority
- DE
- Germany
- Prior art keywords
- plastic
- base material
- separator according
- webs
- network structure
- 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
Links
- 239000000463 material Substances 0.000 title claims description 17
- 239000004033 plastic Substances 0.000 claims description 18
- 229920003023 plastic Polymers 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000010408 film Substances 0.000 description 6
- -1 polyethylene Polymers 0.000 description 5
- 229920001169 thermoplastic Polymers 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000004804 winding 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
- B32B2038/0028—Stretching, elongating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/10—Polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/10—Batteries
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
- H01M50/491—Porosity
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cell Separators (AREA)
- Materials For Medical Uses (AREA)
Description
VARTA Batterie Aktiengesellschaft 3000 Hannover 21, Am Leineufer 51VARTA Batterie Aktiengesellschaft 3000 Hannover 21, Am Leineufer 51
Scheider für elektrische Akkumulatoren aus einem mikroporösen Grundmaterial.Separator for electrical accumulators made from a microporous base material.
Die Erfindung betrifft einen Scheider für elektrische Akkumulatoren, insbesondere Bleiakkumulatoren, aus einem mikroporösen Grundmaterial.The invention relates to a separator for electrical batteries, in particular lead-acid batteries a microporous base material.
Die Verwendung von Scheidern in der .Akkumulatortechnik umfaßt je nach Zellenaufbau und Elektrodenform ein ausgedehntes Spektrum von Diaphragmen, welches von einfachen Abstandshaltern bis zu mikroporösen Raumstrukturen sich erstreckt. In ihrer großen Mehrzahl sind die Scheider heute, namentlich für den Gebrauch in Bleiakkumulatoren, aus säurebeständigen thermoplastischen Kunststoffen gefertigt.The use of separators in accumulator technology includes an extensive range of diaphragms depending on the cell structure and electrode shape, which from simple spacers to microporous spatial structures. In their great majority are the separators today, especially for use in lead accumulators, made of acid-resistant thermoplastic plastics.
Die einfachste Methoce zur Herstellung solcher Scheider ist die Sinterung vor Kunststoff pulvern. In diesem Falle wird beispielsweise Polyvinylchlorid-Pulver auf ein Stahlband in dünner Schicht aufgetragen und durch einen Sinterofen hindurchgeführt. Bei einer Lufttemperatur im Ofen von 200 bis 3500C wird das Pulverband zu einem festen Körper relativ hoher Porosität versintert. The simplest method for producing such separators is sintering before plastic powders. In this case, for example, polyvinyl chloride powder is applied in a thin layer to a steel strip and passed through a sintering furnace. At an air temperature in the oven of 200 to 350 ° C., the powder bandage is sintered into a solid body with a relatively high porosity.
03002 0/011303002 0/0113
Durch Schneiden oder Stanzen lassen sich Platten von gewünschter Einbaugröße erhalten, die jedoch in enger flächiger Berührung mit den Elektrodenplatten keinen Raum für ein ungehindertes Entweichen der beim Laden entstehenden Gase offenlassen.Plates of the desired installation size can be obtained by cutting or punching, but in close surface contact with the electrode plates no space for an unhindered escape of the leave open gases generated during charging.
Das gesinterte Pulverband wird deshalb vor dem Zerschneiden bei verminderter Temperatur zwischen Walzen zu einem welligen Körper nachgeformt, oder es erhält eine Profilierung durch Rippen oder Stege, die vor der Sinterung mittels Formwalzen oder Streichmessern (Rakel) aus dem Band ausgeformt werden, oder durch nachträglich aufgebrachte Rippen.The sintered powder bandage is therefore placed between rollers at a reduced temperature before being cut reshaped to a wavy body, or it is given a profile by ribs or webs that are in front sintering by means of forming rollers or doctor blades (doctor blades) from the strip, or by subsequently applied ribs.
In der Regel genügt es, daß sich lediglich auf einer Seite des Scheiders Rippen befinden, welche der positiven Elektrode zugekehrt ist, während die andere Seite des Scheiders der negativen Elektrode unmittelbar anliegt. Anordnungen sowohl dieser Art als auch der von gewellten Folien zwischen positiven und negativen Batterieelektroden sind beispielsweise aus der DE-AS 1 771 227 bekannt. Die Rippen bzw. Abstandshalter werden hier durch Ausstanzen aus einem Folienmaterial von gewünschter Dicke gewonnen und in parallellaufenden Bahnen auf den eigentlichen Separator aufgeklebt, aufgeschweißt oder in diesen gewaltsam eingedrückt. Nach einem anderen bekannten Verfahren gemäß DE-AS 1 269 212 trägt man eine warmaushärtende Kunstharzmischung mittels Extruder in Form paralleler Stränge auf die eigentliche poröse Scheiderfolie auf und leitet das Produkt durch einen LuftumwälzofenAs a rule, it is sufficient that there are ribs on only one side of the separator, which are the positive ones Electrode is facing, while the other side of the separator is facing the negative electrode immediately is present. Arrangements of both this type and that of corrugated foils between positive and negative Battery electrodes are known from DE-AS 1 771 227, for example. The ribs or spacers are obtained here by punching out of a film material of the desired thickness and in parallel Lanes glued, welded or forcibly into the actual separator depressed. According to another known method according to DE-AS 1 269 212 one wears a thermosetting Synthetic resin mixture by means of an extruder in the form of parallel strands on the actual porous separator foil and passes the product through an air circulation oven
0 30020/01130 30020/0113
mit eingestellter Temperatur, bei der die Stränge auf die Unterlage aufschmelzen und gleichzeitig mit dieser, die mit teilweise ausgehärtetem Phenol-Formaldehyd-Kunstharz imprägniert ist, vollständig aushärten.with a set temperature at which the strands melt on the base and at the same time with this, which is impregnated with partially cured phenol-formaldehyde synthetic resin, cure completely.
Da die Rippen nur in Längsbahnen verlaufen können, um den aufsteigenden Sauerstoffblasen einen notwendigen Durchlaß zu gewähren, besitzt der Scheider nur in einer Richtung eine gute mechanische Stabilität, während er in der anderen Richtung leicht gefaltet oder eingedrückt werden kann.Since the ribs can only run in longitudinal lines to the ascending oxygen bubbles a necessary To allow passage, the separator has good mechanical stability only in one direction, while it can be easily folded or indented in the other direction.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Scheider, insbesondere für Bleiakkumulatoren bzw. Starterbatterien, verfügbar zu machen, der neben seiner eigentlichen Funktion als hochporöses Diaphragma auch eine gute Steifigkeit über die ganze Flächenausdehnung besitzt und trotz Engeinbau den Ladegasen ein müheloses Entweichen aus dem Elektrolyten ermöglicht.The invention is therefore based on the object of providing a separator, in particular for lead accumulators or starter batteries, to make available, which in addition to its actual function as a highly porous diaphragm also has a has good rigidity over the entire surface area and, despite the narrow installation, the cargo gases are effortless Allows escape from the electrolyte.
Die Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die der positiven Elektrode zugekehrte Seite mit einer Netzstruktur aus Kunststoff verbunden ist.The object is achieved according to the invention in that the side facing the positive electrode with a network structure made of plastic is connected.
Die Verbindung mit dem eigentlichen Grundmaterial soll an sich nur so lange aufrechterhalten werden, bis der Scheider seinen Platz in der Zelle zwischen den Elektroden unterschiedlicher Polarität für immer eingenommen hat. Das Netzwerk hat die Aufgabe, ein möglicherweise äußerst flexibles Grundmaterial im Zuge der Fabrikation manipulierbar zum Starrscheider zu verfestigen.The connection with the actual base material should only be maintained until the Scheider forever took his place in the cell between the electrodes of different polarity Has. The task of the network is to create a possibly extremely flexible base material in the course of manufacture to solidify manipulable to rigid separator.
030020/0113030020/0113
Das Grundmaterial des erfindungsgemäßen Scheiders ist eine hochporöse Folie, die aus einem gegen Säuren beständigen, thermoplastischen Kunststoff besteht. Als geeignetes Material kommt Polyäthylen, vorzugsweise jedoch Polypropylen infrage. Eine bekannte Polypropylenfolie z.B. besitzt eine Dicke von ca. 25 u und eine Porosität von 35 %, wobei der Durchmesser der Poren weniger als 0,1 u beträgt. Die Poren dieser Folie können als diskrete, leicht gewundene Kanäle von einer Oberfläche zur anderen verstanden werden. · Die sich daraus ergebende besonders gleichmäßige Struktur verleiht der Folie für den vorgesehenen Anwendungszweck überaus günstige mechanische und elektrische Eigenschaften.The basic material of the separator according to the invention is a highly porous film made of an acid-resistant thermoplastic material. A suitable material is polyethylene, but preferably polypropylene. A known polypropylene film, for example, has a thickness of approx. 25 μm and a porosity of 35 %, the diameter of the pores being less than 0.1 μm. The pores of this film can be understood as discrete, gently winding channels from one surface to the other. The resulting particularly uniform structure gives the film extremely favorable mechanical and electrical properties for the intended application.
Einseitig auf das Grundmaterial des Scheiders und mit diesem haftend verbunden ist eine Netzstruktur aus einem Kunststoff aufgebracht, der zweckmäßig aus der gleichen Gruppe von Thermoplasten ausgewählt ist, gegebenenfalls aber auch ein Duroplast sein kann.A network structure is made on one side of the base material of the separator and is bonded to it applied to a plastic which is expediently selected from the same group of thermoplastics, but can optionally also be a thermoset.
Der Netzstruktur kommt die Rolle eines Abstandshalters zu, wobei dem Scheider insgesamt nach allen Flächenrichtungen hin eine erhöhte Biegefestigkeit zuteil wird, die bekannte laminare Strukturen wie eingangs erwähnte Stegscheider nur unvollkommen besitzen. Erst in Verbindung mit der netzartigen Abstandshalterschicht, über der die hauchdünne Folie gewissermaßen aufgespannt ist, kann sie ihre Scheiderfunktion optimal ausüben.The net structure plays the role of a spacer, with the separator as a whole in all surface directions an increased flexural strength is assigned to the known laminar structures as at the beginning only have the mentioned Stegscheider imperfectly. Only in connection with the net-like spacer layer, Over which the wafer-thin film is stretched, so to speak, it can optimally perform its separating function.
030020/0113030020/0113
Die Netzstruktur selbst kann aus sich kreuzenden Parallelscharen von Kunststoffstäben oder -drähten gebildet sein.The network structure itself can be formed from intersecting parallel sets of plastic rods or wires be.
In einer vorzugsweisen Ausführungsform der Erfindung ist die Netzstruktur jedoch ein Streckkunststoff, welcher aus einem glatten Bandmaterial, ähnlich wie ein Streckmetall,hergestellt wurde. Dieser Streckverarbeitung liegt ein an sich bekannter Reckvorgang zugrunde, dem das Kunststoff materials, welches die Netzstruktur bildet, seine Formstabilitat verdankt. Durch Recken erfahren nämlich die meisten linearpolymeren Kunststoffe eine erhebliche Festigkeitssteigerung bei gleichzeitigem Rückgang der Dehnung. Die Verfestigung beruht darauf, daß sich die im allgemeinen geknäulten Fadenmoleküle unter dem Einfluß einer Zugspannung zu kristallähnlichen Strukturen ordnen, innerhalb derer die zwischenmolekularen Bindungskräfte stärker wirksam sind.In a preferred embodiment of the invention, however, the network structure is an expanded plastic, which was made of a smooth strip material, similar to an expanded metal. This stretch processing is based on a known stretching process, which is the plastic material, which the network structure forms, owes its dimensional stability. By Most linear polymer plastics experience a considerable increase in strength when they are stretched simultaneous decrease in elongation. The consolidation is based on the fact that the generally convoluted Arrange thread molecules under the influence of tensile stress to form crystal-like structures within whose intermolecular binding forces are more effective.
Einer Verformung durch Recken bzw. Strecken sind sowohl glasig-amorphe Thermoplaste als auch bei Raumtemperatur teilkristalline Thermoplaste wie Polyäthylen und Polypropylen zugänglich. Bei den letzteren ist es günstig, die Streckung bei einer höheren Temperatur, im Bereich 100 bis 1500C (Warmformtemperatur) vorzunehmen, die bereits in der Nähe des Schmelzbereiches der Kristallite liegt. In jedem Fall sollte die Verformungstemperatur so hoch gewählt werden, daß anschließend ein Abschrecken noch bis unter die sog. Einfriertemperatur erfolgen kann, wobei der thermo-Both vitreous-amorphous thermoplastics and thermoplastics that are partially crystalline at room temperature, such as polyethylene and polypropylene, can be deformed by stretching or stretching. In the case of the latter, it is advantageous to carry out the stretching at a higher temperature, in the range from 100 to 150 ° C. (hot forming temperature), which is already close to the melting range of the crystallites. In any case, the deformation temperature should be selected so high that quenching can then take place below the so-called freezing temperature, whereby the thermo-
— 7 —- 7 -
030020/0113030020/0113
elastische Zustandsbereich unterlaufen wird. Die Formänderung bleibt dann standfest bis zum Kristallschmelzbereich, zumindest bei den üblichen Gebrauchstemperaturen. elastic state area is undermined. The change in shape then remains stable up to the crystal melt area, at least at normal usage temperatures.
Die Streckkunststoff-Auflage des erfindungsgeraäßen Scheiders besitzt vorzugsweise Stege von unterschiedlicher Dicke. Die Stege mit der geringeren Dicke sind innerhalb des Streckrasters so angeordnet, daß sich in Vorzugsrichtungen Paßstrecken für das Entweichen der Elektrolysegase ergeben, nachdem der Scheider eng zwischen den Elektrodenplatten eingebaut ist. Eine derartige Gestaltung des Streckkunststoffes ist auf verschiedene Weise möglich. Beispielsweise können die Schlitze, mit welchen die Kunststoffolie, ganz ähnlich wie bei einem zu streckenden metallischen Bandmaterial, versehen ist, nach einem vorgegebenen Muster so gegeneinander versetzt sein, daß durch die -Messer des Streckwerkzeuges die zwischen den Schlitzen befindlichen Flächen teils stärker, teils weniger stark nach den Seiten herausgedrückt werden. Dabei lassen sich Bahnen von weniger dicken Stegen mit zickzackförmigem Verlauf erzielen. Eine andere Möglichkeit zur Erzeugung größerer und kleinerer Stegdicken nebeneinander besteht darin, daß die sonst gleichen, kammartig angeordneten Schlitzmesser des Streckwerkzeuges teilweise und in einer bestimmten Reihenfolge gegen Stanzmesser ausgewechselt sind.The expanded plastic support of the separator according to the invention preferably has webs of different shapes Thickness. The webs with the smaller thickness are arranged within the stretching grid so that in Preferred directions result in pass sections for the escape of the electrolysis gases after the separator is narrow is installed between the electrode plates. Such a design of the expanded plastic is on different ways possible. For example, the slots with which the plastic film can be completely similar to a metallic strip material to be stretched, is provided according to a predetermined one Patterns are offset from one another in such a way that the knives of the stretching tool cut between the slots located surfaces are sometimes more strongly, sometimes less strongly pushed out to the sides. Included tracks of less thick webs with a zigzag course can be achieved. Another possibility to create larger and smaller web thicknesses next to each other is that the otherwise identical, Comb-like arranged slitting knife of the stretching tool partially and in a certain order have been replaced by punching knives.
030020/0113030020/0113
. ϊ y I - ' 2Β11Α63 . ϊ y I - '2Β11Α63
Die Vereinigung der Netzstruktur mit dem mikroporösen Grundmaterial zu einem einheitlichen Körper kann infolge der besonderen Eigenschaften der thermoplastischen Kunststoffe in der Weise erfolgen, daß man die zu verbindenden Flächen bis zur beginnenden Erweichung erwärmt und unter gelindem Preßdruck zusammendrückt, bzw. das Grundmaterial auf die Neztstruktur aufbügelt. Die Aufwärmzeit sollte jedoch kurz bemessen und die Temperatur so eingestellt sein,, daß die Oberflächen gerade klebefähig sind und bei Druckanwendung miteinander verschweißen-The union of the network structure with the microporous Base material into a single body can be due to the special properties of thermoplastic Plastics are made in such a way that the surfaces to be connected are heated until they begin to soften and then pressed together under gentle pressure, or the base material is applied to the net structure ironed on. However, the warm-up time should be short and the temperature should be set so that the surfaces can be glued and welded to one another when pressure is applied
Zu diesem Zweck ist es vorteilhaft, das mikroporöse Grundmaterial und den Streckkunststoff, beide in Bandform, getrennt über heizbare Rollen zu führen, die sie mit der zum Verkleben notwendigen Temperatur an der Auflageseite zur Walzenfläche verlassen. Die Bänder werden unmittelbar darauf von zwei eng benachbarten Umlenkrollen aufgenommen und zwischen diesen leicht zusammengedrückt. Die Spaltbreite zwischen den Umlenkrollen sollte nur wenig schmaler als die Höhe des Fertigprodukts sein, um ein unerwünschtes Flachwalzen des verfestigten Streckkunststoffes zu vermeiden.For this purpose it is advantageous to use the microporous base material and the expanded plastic, both in Tape form, to be guided separately over heated rollers that keep them at the temperature necessary for gluing left on the contact side to the roller surface. The ligaments become tight immediately afterwards by two added adjacent pulleys and slightly compressed between them. The gap width between the pulleys should be only slightly narrower than the height of the finished product to avoid undesirable flat rolling of the solidified expanded plastic to avoid.
Figur 1 zeigt einen Verbundseparator gemäß der Erfindung, bestehend aus der mikroporösen Grundfolie 1 und einer Streckkunststoff-Auflage 2. Die gestrichelten Linien führen über bevorzugte Passagen für das Gas hinweg, die durch Reduzierung der Stegdicken in diesen Bereichen gebildet sind.Figure 1 shows a composite separator according to the invention, consisting of the microporous base film 1 and an expanded plastic layer 2. The dashed lines lead over preferred passages for the gas away, which are formed by reducing the web thicknesses in these areas.
030020/0113030020/0113
Die gesamte Schichtdicke des Verbundseparators entspricht der Dicke üblicher Separatoren in Starterbatterien. The total layer thickness of the composite separator corresponds to the thickness of conventional separators in starter batteries.
O30020/0113O30020 / 0113
-s/O--so-
LeerseiteBlank page
Claims (6)
Priority Applications (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2847463A DE2847463C2 (en) | 1978-11-02 | 1978-11-02 | Separator for electrical accumulators made from a microporous base material |
SE7907260A SE436312B (en) | 1978-11-02 | 1979-08-31 | ELECTRICAL ACCUMULATORS SEPARATOR |
GB7935601A GB2038715B (en) | 1978-11-02 | 1979-10-12 | Separator for electrical accumulators consisting of a microporous base material |
BE0/197874A BE879707A (en) | 1978-11-02 | 1979-10-29 | SEPARATOR FOR ELECTRIC ACCUMULATORS IN MICROPOROUS BASE MATERIAL |
ES1979246498U ES246498Y (en) | 1978-11-02 | 1979-10-30 | SEPARATOR FOR ELECTRIC ACCUMULATORS |
DK458179A DK458179A (en) | 1978-11-02 | 1979-10-30 | SEPARATOR FOR ELECTRICAL ACCUMULATORS OF A MICROPOROUS BASIC MATERIAL |
FR7927048A FR2441274A1 (en) | 1978-11-02 | 1979-10-31 | SEPARATOR FOR ELECTRIC ACCUMULATORS IN MICROPOROUS BASE MATERIAL |
AT0702979A AT373444B (en) | 1978-11-02 | 1979-10-31 | SCHEIDER FOR ELECTRIC ACCUMULATORS, ESPECIALLY FOR LEAD ACCUMULATORS, FROM A MICROPOROUS BASIC MATERIAL |
CA000338855A CA1135331A (en) | 1978-11-02 | 1979-10-31 | Separator for electric accumulators made of a microporous base material |
NO793514A NO150657C (en) | 1978-11-02 | 1979-11-01 | DISPENSER FOR ELECTRICAL ACCUMULATORS CONSISTING OF A MICROPOROUS BASIC MATERIAL, AND PROCEDURE FOR THE PREPARATION OF THE DISPENSER |
NL7908014A NL7908014A (en) | 1978-11-02 | 1979-11-01 | SPACER FOR ELECTRICAL BATTERIES FROM A MICROPOROUS BASIC MATERIAL. |
FI793419A FI793419A (en) | 1978-11-02 | 1979-11-01 | AVSKILJARE AV MIKROPOROEST MATERIAL FOER ACKUMULATORER |
JP14052079A JPS5564363A (en) | 1978-11-02 | 1979-11-01 | Battery separator of fine porous base muaterial |
IT27016/79A IT1124909B (en) | 1978-11-02 | 1979-11-02 | SEPARATOR FOR ELECTRIC ACCUMULATORS OF A MICROPOROUS BASIC MATERIAL |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2847463A DE2847463C2 (en) | 1978-11-02 | 1978-11-02 | Separator for electrical accumulators made from a microporous base material |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2847463A1 true DE2847463A1 (en) | 1980-05-14 |
DE2847463C2 DE2847463C2 (en) | 1986-02-06 |
Family
ID=6053638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2847463A Expired DE2847463C2 (en) | 1978-11-02 | 1978-11-02 | Separator for electrical accumulators made from a microporous base material |
Country Status (14)
Country | Link |
---|---|
JP (1) | JPS5564363A (en) |
AT (1) | AT373444B (en) |
BE (1) | BE879707A (en) |
CA (1) | CA1135331A (en) |
DE (1) | DE2847463C2 (en) |
DK (1) | DK458179A (en) |
ES (1) | ES246498Y (en) |
FI (1) | FI793419A (en) |
FR (1) | FR2441274A1 (en) |
GB (1) | GB2038715B (en) |
IT (1) | IT1124909B (en) |
NL (1) | NL7908014A (en) |
NO (1) | NO150657C (en) |
SE (1) | SE436312B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59121775A (en) * | 1982-12-28 | 1984-07-13 | Shin Kobe Electric Mach Co Ltd | Sealed type lead storage battery |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2360658A (en) * | 1943-05-27 | 1944-10-17 | Carlile & Doughty Inc | Separator for batteries |
US2531504A (en) * | 1944-06-12 | 1950-11-28 | Richardson Co | Separator for electric storage batteries |
FR1067287A (en) * | 1952-11-29 | 1954-06-14 | Accumulator separator | |
DE1681854U (en) * | 1952-04-22 | 1954-08-19 | Gottfried Hagen A G | COMPOSITE SEPARATOR. |
CH314111A (en) * | 1952-06-28 | 1956-05-31 | Bosch Gmbh Robert | Separator for electrical collector batteries |
FR1348420A (en) * | 1964-04-10 | |||
DE1771227B2 (en) * | 1965-07-29 | 1973-05-30 | Societe Des Accumulateurs Fixes Et De Traction S.A., Romainville, Seine (Frankreich) | PROCESS FOR MANUFACTURING CUTTERS FOR ACCUMULATORS, IN WHICH SPACERS ARE ATTACHED AT LEAST ON ONE SIDE OF THE CUTTER |
-
1978
- 1978-11-02 DE DE2847463A patent/DE2847463C2/en not_active Expired
-
1979
- 1979-08-31 SE SE7907260A patent/SE436312B/en unknown
- 1979-10-12 GB GB7935601A patent/GB2038715B/en not_active Expired
- 1979-10-29 BE BE0/197874A patent/BE879707A/en not_active IP Right Cessation
- 1979-10-30 ES ES1979246498U patent/ES246498Y/en not_active Expired
- 1979-10-30 DK DK458179A patent/DK458179A/en not_active Application Discontinuation
- 1979-10-31 FR FR7927048A patent/FR2441274A1/en active Granted
- 1979-10-31 CA CA000338855A patent/CA1135331A/en not_active Expired
- 1979-10-31 AT AT0702979A patent/AT373444B/en not_active IP Right Cessation
- 1979-11-01 NL NL7908014A patent/NL7908014A/en not_active Application Discontinuation
- 1979-11-01 FI FI793419A patent/FI793419A/en not_active Application Discontinuation
- 1979-11-01 JP JP14052079A patent/JPS5564363A/en active Pending
- 1979-11-01 NO NO793514A patent/NO150657C/en unknown
- 1979-11-02 IT IT27016/79A patent/IT1124909B/en active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1348420A (en) * | 1964-04-10 | |||
US2360658A (en) * | 1943-05-27 | 1944-10-17 | Carlile & Doughty Inc | Separator for batteries |
US2531504A (en) * | 1944-06-12 | 1950-11-28 | Richardson Co | Separator for electric storage batteries |
DE1681854U (en) * | 1952-04-22 | 1954-08-19 | Gottfried Hagen A G | COMPOSITE SEPARATOR. |
CH314111A (en) * | 1952-06-28 | 1956-05-31 | Bosch Gmbh Robert | Separator for electrical collector batteries |
FR1067287A (en) * | 1952-11-29 | 1954-06-14 | Accumulator separator | |
DE1771227B2 (en) * | 1965-07-29 | 1973-05-30 | Societe Des Accumulateurs Fixes Et De Traction S.A., Romainville, Seine (Frankreich) | PROCESS FOR MANUFACTURING CUTTERS FOR ACCUMULATORS, IN WHICH SPACERS ARE ATTACHED AT LEAST ON ONE SIDE OF THE CUTTER |
Also Published As
Publication number | Publication date |
---|---|
SE436312B (en) | 1984-11-26 |
ES246498Y (en) | 1980-08-16 |
IT7927016A0 (en) | 1979-11-02 |
AT373444B (en) | 1984-01-25 |
ES246498U (en) | 1980-02-16 |
NO150657C (en) | 1984-11-21 |
JPS5564363A (en) | 1980-05-15 |
ATA702979A (en) | 1983-05-15 |
SE7907260L (en) | 1980-05-03 |
NO793514L (en) | 1980-05-05 |
NO150657B (en) | 1984-08-13 |
GB2038715A (en) | 1980-07-30 |
FI793419A (en) | 1980-05-03 |
FR2441274A1 (en) | 1980-06-06 |
DK458179A (en) | 1980-05-03 |
IT1124909B (en) | 1986-05-14 |
NL7908014A (en) | 1980-05-07 |
GB2038715B (en) | 1983-02-09 |
CA1135331A (en) | 1982-11-09 |
BE879707A (en) | 1980-02-15 |
DE2847463C2 (en) | 1986-02-06 |
FR2441274B3 (en) | 1981-08-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2935485A1 (en) | METHOD FOR PRODUCING AN ELECTROCHEMICAL CELL OR BATTERY | |
DE4418406A1 (en) | Bipolar lead-acid battery | |
DE102013216544A1 (en) | COMPATIBLE FUEL CELL SEAL WITH INTEGRATED SEAL | |
DE2137900B2 (en) | Rechargeable, sealed alkaline galvanic cell with a zinc-containing negative electrode and a multilayer separator | |
DE10327080A1 (en) | Separator material for forming a separator for an acid accumulator | |
DE69017270T2 (en) | Sealed lead acid battery with bipolar electrodes. | |
DE1496289C3 (en) | Process for the production of an electrode for galvanic elements, in which the active material is introduced into the openings of a profiled carrier and then pressed | |
EP0758490B1 (en) | Separators having longitudinal and transverse ribs for use in storage batteries | |
DE1596064C3 (en) | Process for the production of a separator for electrical accumulators from a porous carrier | |
DE3118450A1 (en) | ELECTRODE FOR AN ELECTROCHEMICAL CELL | |
DE2847463C2 (en) | Separator for electrical accumulators made from a microporous base material | |
DE1671494B1 (en) | METHOD OF MANUFACTURING A DOUBLE-SIDED GAS DIFFUSION ELECTRODE | |
DE69704892T2 (en) | Porous nickel electrode substrate | |
DE2737838C3 (en) | Design and method for manufacturing a multi-cell lead-acid battery | |
DE102016217394A1 (en) | Process for the solvent-free production of an electrode | |
DE60102984T2 (en) | METHOD OF MANUFACTURING A THIN LITHIUM BATTERY | |
DE4019092C2 (en) | ||
DE2544303A1 (en) | Lead acid accumulator separator - made of microporous resin coated plastic mat with conical dimple impressions | |
DE102018212498A1 (en) | Electrode for a fuel cell or a stack of fuel cells | |
DE2403222A1 (en) | Plates for light-weight accumulators - wound from plus and minus metal foils with two separator strips | |
DE2751684C3 (en) | Method for producing a separator for accumulators, in particular lead accumulators | |
DE2332546A1 (en) | BATTERY ELEMENT AND METHOD OF MANUFACTURING IT | |
DE102016217390A1 (en) | Electrode with local differences in porosity, method for producing such an electrode and their use | |
DE1671494C (en) | Process for the production of a double-sided gas diffusion electrode | |
DE2932335A1 (en) | Composite lead accumulator grid plate - with plastic strips extruded to centre and edges of conductor grid |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: VB AUTOBATTERIE GMBH, 30419 HANNOVER, DE |
|
8339 | Ceased/non-payment of the annual fee |