Lithium-ion cell, lithium-ion rechargeable battery and motor vehicle with a lithium-ion rechargeable battery

Patent metadata

Field	Value
Publication number	US-9276265-B2
Application number	US-201113993524-A
Country	US
Kind code	B2
Filing date	Nov 22, 2011
Priority date	Dec 13, 2010
Publication date	Mar 1, 2016
Grant date	Mar 1, 2016

Abstract

A lithium-ion cell includes outgoing conductor foils and collectors. The outgoing conductor foil of a negative electrode of the lithium-ion cell consists of an aluminum foil which is covered on both sides with a metal layer. The collector for the negative electrode has an aluminum workpiece, which is at least partially covered with a metal layer. The metal layers of the outgoing conductor foil and of the collector consist of copper or nickel.

First claim

The invention claimed is:

1. A lithium-ion cell, comprising:
a negative terminal;
a negative electrode of the lithium-ion cell, the negative electrode including an aluminum foil covered on both sides or completely with a first metallic layer of copper or nickel; and
a collector extending between the negative terminal and the negative electrode and in electrical communication with the negative terminal and the negative electrode, the collector including an aluminum workpiece covered, at least in a contact region configured to be in contact with the negative electrode of the lithium-ion cell, with a second metallic layer of copper or nickel.

2. The lithium-ion cell as claimed in claim 1 , wherein the collector is completely surrounded by the second metallic layer.

3. The lithium-ion cell as claimed in claim 1 , wherein at least one of the first metallic layer and the second metallic layer is applied galvanically.

4. The lithium-ion cell as claimed in claim 1 , wherein at least one of the first metallic layer and the second metallic layer is applied by roll-bonded cladding.

5. The lithium-ion cell as claimed in claim 1 , wherein at least one of the first metallic layer and the second metallic layer is applied by ion beam deposition.

6. A lithium-ion rechargeable battery comprising:
at least two lithium-ion cells, each lithium-ion cell including:
a negative electrode of the lithium-ion cell, the negative electrode including an aluminum foil covered on both sides or completely with a first metallic layer of copper or nickel; and
a collector extending between a negative terminal and the negative electrode and in electrical communication with the negative terminal and the negative electrode, the collector including an aluminum workpiece covered, at least in a contact region configured to be in contact with the negative electrode of the lithium-ion cell, with a second metallic layer of copper or nickel.

7. A motor vehicle, comprising:
an electrical drive motor configured to drive the motor vehicle; and
a lithium-ion rechargeable battery configured to be connected to the electrical drive motor, the lithium-ion rechargeable battery including:
at least two lithium-ion cells, each lithium-ion cell including:
a negative electrode of the lithium-ion cell, the negative electrode including an aluminum foil covered on both sides or completely with a first metallic layer of copper or nickel; and
a collector extending between a negative terminal and the negative electrode and in electrical communication with the negative terminal and the negative electrode, the collector including an aluminum workpiece covered, at least in a contact region configured to be in contact with the negative electrode of the lithium-ion cell, with a second metallic layer of copper or nickel.

Assignees

• Leuthner Stephan
• Woehrle Thomas
• Fink Holger
• Fetzer Joachim
• Bosch Gmbh Robert

Inventors

• Leuthner Stephan
• Woehrle Thomas
• Fink Holger
• Fetzer Joachim

Classifications

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M4/667

  in the form of layers, e.g. coatings · CPC title

• H01M50/534

  characterised by the material of the leads or tabs · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M4/70 Primary

  characterised by shape or form · CPC title