EP2649660A1 - Conductor foil for a lithium-ion cell, lithium-ion accumulator and motor vehicle comprising a lithium-ion accumulator - Google Patents

Conductor foil for a lithium-ion cell, lithium-ion accumulator and motor vehicle comprising a lithium-ion accumulator

Info

Publication number
EP2649660A1
EP2649660A1 EP11788118.5A EP11788118A EP2649660A1 EP 2649660 A1 EP2649660 A1 EP 2649660A1 EP 11788118 A EP11788118 A EP 11788118A EP 2649660 A1 EP2649660 A1 EP 2649660A1
Authority
EP
European Patent Office
Prior art keywords
lithium
ion
foil
arrester
motor vehicle
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.)
Ceased
Application number
EP11788118.5A
Other languages
German (de)
French (fr)
Inventor
Stephan Leuthner
Thomas Woehrle
Holger Fink
Joachim Fetzer
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.)
Robert Bosch GmbH
Samsung SDI Co Ltd
Original Assignee
Robert Bosch GmbH
Samsung SDI Co 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 Robert Bosch GmbH, Samsung SDI Co Ltd filed Critical Robert Bosch GmbH
Publication of EP2649660A1 publication Critical patent/EP2649660A1/en
Ceased legal-status Critical Current

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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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/534—Electrode connections inside a battery casing characterised by the material of the leads or tabs
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to an arrester foil for a negative electrode of a lithium ion accumulator having at least one lithium ion cell, a lithium ion accumulator and a motor vehicle with an electric drive motor for driving the motor vehicle and one connected to the electric drive motor or connectable lithium-ion battery.
  • Lithium-ion cells have at least one positive and negative electrode (cathode or anode), the lithium-ion (Li +) reversible on (intercalation) or outsource (deintercalation) can.
  • cathode or anode the lithium-ion (Li +) reversible on (intercalation) or outsource (deintercalation) can.
  • Lithium-ion cell, lithium-ion polymer cell, lithium-ion cell, battery, accumulator and system are used largely synonymously.
  • lithium-ion accumulators with regard to the gravimetric energy density (stated in Wh / kg) in order, for. B. allows to achieve high ranges of vehicles powered by electric motors.
  • the nominal capacity of a lithium-ion cell is determined by the so-called active materials.
  • so-called passive materials or “dead materials” are still present in each lithium-ion cell, which thus have an influence on the energy density of the lithium-ion cell, including, for example, electrical conductive material, electrode binders, separators, arrester films and the housing of the cell of the accumulator itself.
  • Conductive foils serve to electrically contact and connect the positive and negative electrodes.
  • Aluminum foil for contacting the positive electrode is usually used as the lead foil in lithium-ion cells.
  • the negative electrode Aluminum foil for contacting the positive electrode is usually used as the lead foil in lithium-ion cells.
  • copper foils are used on the electrode side, since the use of aluminum foils on the negative side would otherwise lead to the alloying of lithium and aluminum due to the given potential.
  • aluminum foils having a thickness of about 13 to 17 ⁇ m and copper foils of about 12 ⁇ m are used as the conductor foil.
  • the use of copper foil as a drain film results in higher
  • the use of copper as the dissipation foil has a negative influence on the gravimetric energy density of the lithium-ion cell.
  • a trap for lithium-polymer batteries is known, on which an electrically conductive primer layer is applied, which is free of carbon.
  • the layer u. a. consist of metals which have improved compared to conventional carbon-containing primers conductivity.
  • the arresters are preferably made of aluminum and copper, so that the disadvantages already described above in the use of copper as a conductor are given.
  • an aluminum-based arrester foil for the negative electrode side of a lithium-ion cell is provided, which is provided on both sides with a metallic layer which during operation of the Lithium ion cell prevents an alloy with lithium ions.
  • the metallic layer is made of copper or nickel.
  • the edges of the arrester foil are also coated.
  • an arrester foil is obtained, which is advantageously reduced in weight compared to the copper foils according to the prior art.
  • arrester foil In the production of the arrester foil according to the invention, it is preferable not to use a conventional arrester foil made of aluminum for the positive side
  • the copper layers can each be 1 ⁇ strong, so that the thickness of the aluminum core is 10 ⁇ .
  • the outer layers should be as thin as possible.
  • the aluminum core foil is thicker than the two outer layers together.
  • the arrester foil according to the invention is assembled by applying a thin copper foil or layer to the aluminum foil on both sides.
  • nickel can also be used for surface finishing. Applying the thin layers of copper or nickel on the
  • Aluminum foil is preferably either
  • the arrester foils according to the invention are in
  • the arrester foils show the same electrical performance and identical behavior in long-term cyclization and storage as a reference cell with a conventional Abieiter made of copper.
  • the present invention also provides a lithium ion accumulator equipped with this arrester foil with at least one
  • FIG. 1 shows a sectional side view of an arrester foil according to the invention for the negative electrode of a lithium-ion cell.
  • FIG. 1 shows the construction of an arrester foil 10 for a lithium-ion cell (not shown).
  • the arrester foil 10 has a core of an aluminum foil 11, which is covered on both sides by a metallic layer 12.
  • the metallic layers 12 prevent lithium alloy from alloying the aluminum foil during operation of the lithium-ion cell.
  • the layer 12 is made of copper or nickel. Since a weight-optimized arrester foil 10 is to be obtained with the arrester foil 10 according to the invention, the dimensioning of the aluminum foil 11 and the two layers 12 is to be correspondingly dimensioned, that is to say the layers 12 are made as thin as possible.

Abstract

The invention relates to a conductor foil (10) for a negative electrode of a lithium-ion accumulator comprising at least one lithium-ion cell. Said conductor foil (10) comprises an aluminum foil (11) both sides of which are covered by a metal layer (12) consisting of copper or nickel. The invention further relates to a lithium-ion accumulator and to a motor vehicle comprising a lithium-ion accumulator.

Description

Beschreibung Titel  Description title
Ableiterfolie für eine Lithium-Ionen-Zelle, Lithium-Ionen-Akkumulator sowie Kraftfahrzeug mit einem Lithium-Ionen-Akkumulator  Arrester film for a lithium-ion cell, lithium-ion battery and motor vehicle with a lithium-ion battery
Die vorliegende Erfindung betrifft eine Ableiterfolie für eine negative Elektrode eines Lithium-Ionen-Akkumulators mit mindestens einer Lithium-Ionen-Zelle, einen Lithium-Ionen-Akkumulator sowie ein Kraftfahrzeug mit einem elektrischen Antriebsmotor zum Antreiben des Kraftfahrzeugs und einem mit dem elektrischen Antriebsmotor verbundenen oder verbindbaren Lithium-Ionen-Akkumulator. The present invention relates to an arrester foil for a negative electrode of a lithium ion accumulator having at least one lithium ion cell, a lithium ion accumulator and a motor vehicle with an electric drive motor for driving the motor vehicle and one connected to the electric drive motor or connectable lithium-ion battery.
Stand der Technik State of the art
Lithium-Ionen-Zellen besitzen mindestens eine positive und negative Elektrode (Kathode beziehungsweise Anode), die Lithium-Ionen (Li+) reversibel ein- (Interkalation) oder wieder auslagern (Deinterkalation) kann. Die Begriffe Lithium-ion cells have at least one positive and negative electrode (cathode or anode), the lithium-ion (Li +) reversible on (intercalation) or outsource (deintercalation) can. The terms
Lithium-Ionen-Zelle, Lithium-Ionen-Polymer-Zelle, Lithium-Ionen-Zelle, -Batterie, Akkumulator und -System werden weitgehend synonym benutzt. Lithium-ion cell, lithium-ion polymer cell, lithium-ion cell, battery, accumulator and system are used largely synonymously.
An Lithium-Ionen-Akkumulatoren werden hohe Anforderungen bezüglich der gravimetrischen Energiedichte (angegeben in Wh/kg) gestellt, um z. B. möglicht hohe Reichweiten von mit Elektromotoren angetriebenen Fahrzeugen zu erzielen. Die Nenn-Kapazität einer Lithium-Ionen-Zelle wird von den so genannten Aktivmaterialien bestimmt. Allerdings sind in jeder Lithium-Ionen-Zelle noch so genannte Passivmaterialien oder„Totmaterialien" vorhanden, die damit Einfluss auf die Energiedichte der Lithium-Ionen-Zelle haben. Dazu gehören beispielsweise elektrisches Leitmaterial, Elektrodenbinder, Separatoren, Ableiterfolien und das Gehäuse der Zelle bzw. des Akkumulators selbst. Ableiterfolien dienen dazu, die positive und negative Elektrode elektrisch zu kontaktieren und anzubinden. High demands are placed on lithium-ion accumulators with regard to the gravimetric energy density (stated in Wh / kg) in order, for. B. allows to achieve high ranges of vehicles powered by electric motors. The nominal capacity of a lithium-ion cell is determined by the so-called active materials. However, so-called passive materials or "dead materials" are still present in each lithium-ion cell, which thus have an influence on the energy density of the lithium-ion cell, including, for example, electrical conductive material, electrode binders, separators, arrester films and the housing of the cell of the accumulator itself. Conductive foils serve to electrically contact and connect the positive and negative electrodes.
Der Aufbau einer Lithium-Ionen-Zelle ist beispielhaft in der US 20080107961 A1 beschrieben. The construction of a lithium-ion cell is described by way of example in US 20080107961 A1.
Als Ableiterfolie in Lithium-Ionen-Zellen werden üblicherweise Aluminiumfolien zur Kontaktierung der positiven Elektrode eingesetzt. Auf der negativen Aluminum foil for contacting the positive electrode is usually used as the lead foil in lithium-ion cells. On the negative
Elektrodenseite werden hingegen Kupferfolien verwendet, da es bei Verwendung von Aluminiumfolien auf der negativen Seite aufgrund des gegebenen Potentials sonst zur Legierung von Lithium und Aluminium kommen würde. In der Regel verwendet man als Ableiterfolien Aluminiumfolien mit einer Dicke von ca. 13 bis 17 μηι und Kupferfolien von ca. 12 μηι. Aus der Verwendung von Kupferfolie als Ableiterfolie resultieren höhere On the other hand, copper foils are used on the electrode side, since the use of aluminum foils on the negative side would otherwise lead to the alloying of lithium and aluminum due to the given potential. As a rule, aluminum foils having a thickness of about 13 to 17 μm and copper foils of about 12 μm are used as the conductor foil. The use of copper foil as a drain film results in higher
Herstellungskosten. Zudem wird damit ein passives Material eingeführt, das eine höhere kristallographische Dichte im Vergleich zu Aluminium besitzt. So weist Aluminium eine Dichte von 2,7 g/cm3 und Kupfer eine von 8,9 g/cm3 auf. Production costs. It also introduces a passive material that has a higher crystallographic density compared to aluminum. Thus, a aluminum of 8.9 g / cm 3 to a density of 2.7 g / cm 3 and copper.
Dementsprechend hat die Verwendung von Kupfer als Ableitfolie einen negativen Einfluss auf die gravimetrische Energiedichte der Lithium-Ionen-Zelle. Accordingly, the use of copper as the dissipation foil has a negative influence on the gravimetric energy density of the lithium-ion cell.
Aus der DE 103 44 637 A1 ist ein Ableiter für Lithium-Polymer-Batterien bekannt, auf den eine elektrisch leitfähige Primer-Schicht aufgebracht ist, die frei von Kohlenstoff ist. Dabei kann die Schicht u. a. aus Metallen bestehen, die eine gegenüber üblichen kohlenstoffhaltigen Primern verbesserte Leitfähigkeit aufweisen. Eine Unterscheidung der beschriebenen Ableiter hinsichtlich der Eignung für die positive oder negative Elektrode wird nicht vorgenommen. Die Ableiter bestehen bevorzugt aus Aluminium und Kupfer, so dass die bereits voranstehend beschriebenen Nachteile bei der Verwendung von Kupfer als Ableiter gegeben sind. From DE 103 44 637 A1, a trap for lithium-polymer batteries is known, on which an electrically conductive primer layer is applied, which is free of carbon. In this case, the layer u. a. consist of metals which have improved compared to conventional carbon-containing primers conductivity. A distinction of the described arresters with regard to the suitability for the positive or negative electrode is not made. The arresters are preferably made of aluminum and copper, so that the disadvantages already described above in the use of copper as a conductor are given.
Offenbarung der Erfindung Disclosure of the invention
Erfindungsgemäß wird eine aluminiumbasierte Ableiterfolie für die negative Elektrodenseite einer Lithium-Ionen-Zelle zur Verfügung gestellt, die beidseitig mit einer metallischen Schicht versehen ist, die während des Betriebes der Lithium-lonen-Zelle eine Legierung mit Lithium-Ionen unterbindet. Die metallische Schicht besteht aus Kupfer oder aus Nickel. Vorzugsweise sind auch die Kanten der Ableiterfolie beschichtet. According to the invention, an aluminum-based arrester foil for the negative electrode side of a lithium-ion cell is provided, which is provided on both sides with a metallic layer which during operation of the Lithium ion cell prevents an alloy with lithium ions. The metallic layer is made of copper or nickel. Preferably, the edges of the arrester foil are also coated.
Damit wird eine Ableiterfolie erhalten, die vorteilhafterweise gegenüber den Kupferfolien nach dem Stand der Technik gewichtsreduziert ist. Thus, an arrester foil is obtained, which is advantageously reduced in weight compared to the copper foils according to the prior art.
Die Gewichtsvorteile des Aluminiums können damit auch für die negative Elektrode nutzbar gemacht und gleichzeitig der Nachteil der Legierung durch Lithium vermieden werden. The weight advantages of aluminum can thus be utilized for the negative electrode and at the same time the disadvantage of the alloy by lithium can be avoided.
Vorzugsweise wird bei der Herstellung der erfindungsgemäßen Ableiterfolie nicht von einer üblichen Ableiterfolie aus Aluminium für die positive Seite In the production of the arrester foil according to the invention, it is preferable not to use a conventional arrester foil made of aluminum for the positive side
ausgegangen, sondern es werden dünnere Aluminiumfolien verwendet, so dass nach der beidseitigen Beschichtung mit Kupfer oder Nickel eine übliche Dicke von ca. 12 μηι erhalten wird. Beispielsweise können die Kupferschichten jeweils 1 μηι stark sein, so dass die Dicke des Aluminiumkerns 10 μηι beträgt. Andere Dimensionierungen der Schichten bzw. der Gesamtdicke der Ableiterfolie sind natürlich möglich, wobei die außen liegenden Schichten möglichst dünn sein sollten. So wird bei gleicher Foliendicke ein geringeres Gewicht erreicht, als bei einer üblicherweise verwendeten Kupferfolie. but it is thinner aluminum foils are used, so that after the double-sided coating with copper or nickel, a conventional thickness of about 12 μηι is obtained. For example, the copper layers can each be 1 μηι strong, so that the thickness of the aluminum core is 10 μηι. Other dimensions of the layers or the total thickness of the arrester foil are of course possible, the outer layers should be as thin as possible. Thus, with the same film thickness, a lower weight is achieved than with a commonly used copper foil.
Vorzugsweise ist daher die Aluminiumkernfolie dicker als die beiden äußeren Schichten zusammen. Preferably, therefore, the aluminum core foil is thicker than the two outer layers together.
Die erfindungsgemäße Ableiterfolie wird konfektioniert durch das beidseitige Aufbringen einer dünnen Kupferfolie bzw. Schicht auf die Aluminiumfolie. The arrester foil according to the invention is assembled by applying a thin copper foil or layer to the aluminum foil on both sides.
Alternativ kann auch Nickel für die Oberflächenveredelung verwendet werden. Das Aufbringen der dünnen Schichten aus Kupfer oder Nickel auf die Alternatively, nickel can also be used for surface finishing. Applying the thin layers of copper or nickel on the
Aluminiumfolie erfolgt vorzugsweise entweder  Aluminum foil is preferably either
a) galvanisch, a) galvanic,
b) durch Walzplattieren oder b) by roll-plating or
c) mittels lonenstrahlbeschichtung. Bei allen Verfahren ist zu gewährleisten, dass die aufgebrachte Schicht keinerlei Defekte aufweist, da es sonst doch zur Einlagerung von Lithium in die zwischen den beiden Schichten gelegene Aluminiumfolie kommt. Überraschenderweise sind die erfindungsgemäßen Ableiterfolien in c) by means of ion beam coating. In all processes it must be ensured that the applied layer does not show any defects, as otherwise the lithium is embedded in the aluminum foil between the two layers. Surprisingly, the arrester foils according to the invention are in
Lithium-Ionen-Zellen langzeitstabil. Zudem zeigen die Ableiterfolien eine gleiche elektrische Performance und ein identisches Verhalten bei Langzeit-Zyklisierung und -Lagerung wie eine Referenzzelle mit einem herkömmlichen Abieiter aus Kupfer.  Lithium-ion cells long-term stable. In addition, the arrester foils show the same electrical performance and identical behavior in long-term cyclization and storage as a reference cell with a conventional Abieiter made of copper.
Überraschend waren die Eigenschaften der erfindungsgemäßen Ableiterfolien u. a., da eine Ablösung der Kupfer- oder Nickelschicht von der Aluminiumfolie während des Lagerns oder des Betreibens der Zellen a priori nicht Surprisingly, the properties of the Ableiterfolien inventive u. a., Since a detachment of the copper or nickel layer from the aluminum foil during storage or operation of the cells a priori not
auszuschließen gewesen war. Dies wäre für die elektrochemische Performance der Lithium-Ionen-Zelle sehr nachteilig gewesen. had been ruled out. This would have been very detrimental to the electrochemical performance of the lithium-ion cell.
Besonders bevorzugt sind Lithium-Ionen-Zellen mit Ableiterfolien, die mittels Walzplattieren oder lonenstrahlbeschichtung hergestellt wurden, da diese in vorab genannten Vergleichsversuchen die besten Ergebnisse erzielt haben. Particular preference is given to lithium ion cells with arrester foils which have been produced by means of roll cladding or ion beam coating, since these have achieved the best results in previously mentioned comparative experiments.
Gegenstand der vorliegenden Erfindung sind auch ein mit dieser Ableiterfolie ausgerüsteter Lithium-Ionen-Akkumulator mit mindestens einer The present invention also provides a lithium ion accumulator equipped with this arrester foil with at least one
Lithium-Ionen-Zelle sowie ein Kraftfahrzeug mit einem elektrischen Antriebsmotor zum Antreiben des Kraftfahrzeugs und einem mit dem elektrischen Antriebsmotor verbundenen oder verbindbaren Lithium-Ionen-Akkumulator. Lithium-ion cell and a motor vehicle with an electric drive motor for driving the motor vehicle and a connected to the electric drive motor or connectable lithium-ion battery.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben und in der Beschreibung beschrieben. Zeichnungen Advantageous developments of the invention are specified in the subclaims and described in the description. drawings
Ein Ausführungsbeispiel der Erfindung wird anhand einer Zeichnung und der nachfolgenden Beschreibung näher erläutert. Es zeigt: Figur 1 in einer geschnittenen Seitenansicht eine erfindungsgemäße Ableiterfolie für die negative Elektrode einer Lithium-Ionen-Zelle. In Figur 1 ist der Aufbau einer Ableiterfolie 10 für eine nicht dargestellte Lithium-Ionen-Zelle gezeigt. Die Ableiterfolie 10 besitzt einen Kern aus einer Aluminiumfolie 1 1 , die auf beiden Seiten von einer metallischen Schicht 12 bedeckt ist. Die metallischen Schichten 12 verhindern, dass während des Betriebes der Lithium-Ionen-Zelle Lithium die Aluminiumfolie legiert. An embodiment of the invention will be explained in more detail with reference to a drawing and the description below. 1 shows a sectional side view of an arrester foil according to the invention for the negative electrode of a lithium-ion cell. FIG. 1 shows the construction of an arrester foil 10 for a lithium-ion cell (not shown). The arrester foil 10 has a core of an aluminum foil 11, which is covered on both sides by a metallic layer 12. The metallic layers 12 prevent lithium alloy from alloying the aluminum foil during operation of the lithium-ion cell.
Vorzugsweise besteht die Schicht 12 aus Kupfer oder Nickel. Da mit der erfindungsgemäßen Ableiterfolie 10 eine gewichtsoptimierte Ableiterfolie 10 erhalten werden soll, ist die Dimensionierung der Aluminiumfolie 11 und der beiden Schichten 12 entsprechend zu bemessen, das heißt, die Schichten 12 sind möglicht dünn ausgeführt. Preferably, the layer 12 is made of copper or nickel. Since a weight-optimized arrester foil 10 is to be obtained with the arrester foil 10 according to the invention, the dimensioning of the aluminum foil 11 and the two layers 12 is to be correspondingly dimensioned, that is to say the layers 12 are made as thin as possible.

Claims

Ansprüche claims
1. Eine Ableiterfolie für eine negative Elektrode eines 1. A negative electrode lead foil
Lithium-Ionen-Akkumulators mit mindestens einer Lithium-Ionen-Zelle, dadurch gekennzeichnet, dass die Ableiterfolie (10) eine Aluminiumfolie (11) aufweist, die beidseitig mit einer metallischen Schicht (12) bedeckt ist, die aus Kupfer oder Nickel besteht.  Lithium-ion battery with at least one lithium-ion cell, characterized in that the arrester foil (10) comprises an aluminum foil (11) which is covered on both sides with a metallic layer (12) consisting of copper or nickel.
2. Die Ableiterfolie nach Anspruch 1 , wobei die metallischen Schichten (12) galvanisch aufgebracht sind. 2. The arrester foil according to claim 1, wherein the metallic layers (12) are applied galvanically.
3. Die Ableiterfolie nach Anspruch 1 , wobei die metallischen Schichten (12) mittels Walzplattieren aufgebracht sind. 3. The arrester foil according to claim 1, wherein the metallic layers (12) are applied by roll cladding.
4. Die Ableiterfolie nach Anspruch 1 , wobei die metallischen Schichten (12) mittels lonenstrahlbeschichtung aufgebracht sind. 4. The arrester foil according to claim 1, wherein the metallic layers (12) are applied by means of ion beam coating.
5. Die Ableiterfolie nach einem der Ansprüche 1 bis 4, wobei die Aluminiumfolie (1 1) eine größere Dicke aufweist als die Summe der Dicken der beidseitig aufgebrachten Schichten (12). 5. The arrester foil according to one of claims 1 to 4, wherein the aluminum foil (1 1) has a greater thickness than the sum of the thicknesses of the layers (12) applied on both sides.
6. Ein Lithium-Ionen-Akkumulator mit mindestens einer Lithium-Ionen-Zelle mit einer Ableiterfolie (10) auf einer negativen Elektrodenseite nach einem der Ansprüche 1 bis 4. 6. A lithium-ion secondary battery with at least one lithium-ion cell with a drain foil (10) on a negative electrode side according to one of claims 1 to 4.
7. Ein Kraftfahrzeug mit einem elektrischen Antriebsmotor zum Antreiben des Kraftfahrzeugs und einem mit dem elektrischen Antriebsmotor verbundenen oder verbindbaren Lithium-Ionen-Akkumulator gemäß Anspruch 6. 7. A motor vehicle having an electric drive motor for driving the motor vehicle and a connected to the electric drive motor or connectable lithium-ion battery according to claim 6.
EP11788118.5A 2010-12-10 2011-11-22 Conductor foil for a lithium-ion cell, lithium-ion accumulator and motor vehicle comprising a lithium-ion accumulator Ceased EP2649660A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010062852A DE102010062852A1 (en) 2010-12-10 2010-12-10 Arrester film for a lithium-ion cell, lithium-ion battery and motor vehicle with a lithium-ion battery
PCT/EP2011/070644 WO2012076327A1 (en) 2010-12-10 2011-11-22 Conductor foil for a lithium-ion cell, lithium-ion accumulator and motor vehicle comprising a lithium-ion accumulator

Publications (1)

Publication Number Publication Date
EP2649660A1 true EP2649660A1 (en) 2013-10-16

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US (1) US20140015453A1 (en)
EP (1) EP2649660A1 (en)
CN (1) CN103339759A (en)
DE (1) DE102010062852A1 (en)
WO (1) WO2012076327A1 (en)

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US9608245B2 (en) * 2014-09-30 2017-03-28 Johnson Controls Technology Company System for providing structural integrity of a battery module
KR20220002350A (en) * 2019-04-17 2022-01-06 2555663 온타리오 리미티드 Lithium metal anode assembly and device and method for manufacturing same

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