Lithium replenishment for containing capacity loss in li ion batteries

Patent metadata

Field	Value
Publication number	US-2018254529-A1
Application number	US-201715446520-A
Country	US
Kind code	A1
Filing date	Mar 1, 2017
Priority date	Mar 1, 2017
Publication date	Sep 6, 2018
Grant date	—

Abstract

A lithium-ion battery includes a housing, an electrode assembly within the housing, and a high capacity regenerating electrode. The high capacity regenerating electrode is within the housing and electrically isolated from the electrode assembly. The high capacity regenerating electrode is also spaced away from and only corresponds to a single face of the electrode assembly. The high capacity regenerating electrode is configured to be selectively electrically connected to the electrode assembly to provide lithium ions to increase capacity of the electrode assembly.

First claim

What is claimed is:

1 . A lithium-ion battery comprising:
a housing; an electrode assembly within the housing; and a high capacity regenerating electrode within the housing, electrically isolated from the electrode assembly, spaced away from and only corresponding to a single face of the electrode assembly, and configured to be selectively electrically connected to the electrode assembly to provide lithium ions to increase capacity of the electrode assembly.

2 . The battery of claim 1 , wherein the electrode assembly is a wound assembly, and wherein the single face is a flat face of the wound assembly.

3 . The battery of claim 1 , wherein the high capacity regenerating electrode includes a separator encasing a current collector and a high capacity active material.

4 . The battery of claim 3 , wherein the high capacity active material is a high capacity cathode material.

5 . The battery of claim 4 , wherein the high capacity active material is Ni-rich NMC, lithiated sulfur, or xLi 2 MnO 3 ·(1-x)LiZO 2 , wherein Z is Mn, Co, or Ni and x is a value between 0 and 1 representing a percentage for each component.

6 . The battery of claim 3 , wherein the high capacity active material is a high capacity anode material.

7 . The battery of claim 6 , wherein the high capacity active material is
lithiated metal hydride, lithiated SnO 2 , lithiated Co 3 O 4 , lithiated CuSn, or alloys thereof, lithiated Si, lithiated Sn, or lithiated Ge.

8 . A system comprising:
a battery having
a housing,
an electrode assembly within the housing, and
a high capacity regenerating electrode within the housing, electrically isolated from, spaced away from, and only corresponding to a single face of the electrode assembly, and configured to be selectively electrically connected to the assembly via a circuit to increase capacity of the assembly; and
a controller configured to activate the circuit based on signals from a battery management system.

9 . The system of claim 8 , wherein the battery management system is configured to monitor battery capacity and degradation and output signals regarding the same.

10 . The system of claim 8 , wherein the electrode assembly is a wound assembly, and wherein the single face is a flat face of the wound assembly.

11 . The system of claim 8 , wherein the high capacity regenerating electrode includes a separator encasing a current collector and a high capacity active material.

12 . The system of claim 11 , wherein the high capacity active material is a high capacity cathode material.

13 . The system of claim 12 , wherein the high capacity active material is Ni-rich NMC, lithiated sulfur, or xLi 2 MnO 3 ·(1-x)LiZO 2 , wherein Z is Mn, Co, or Ni and x is a value between 0 and 1 representing a percentage for each component.

14 . The system of claim 11 , wherein the high capacity active material is a high capacity anode material.

15 . The system of claim 14 , wherein the high capacity active material is lithiated metal hydride,
lithiated SnO 2 , lithiated Co 3 O 4 , lithiated CuSn, or alloys thereof, lithiated Si, lithiated Sn, or lithiated Ge.

16 . The system of claim 8 , wherein the controller is configured to set an initial capacity of the battery and a new initial capacity after capacity of the electrode assembly is increased.

17 . A lithium-ion battery comprising:
a housing; a wound electrode assembly within the housing and having at least one face; and a high capacity regenerating electrode within the housing, electrically isolated from the electrode assembly, spaced away from and only corresponding to a single face of the electrode assembly, and configured to be selectively electrically connected to the electrode assembly via a regeneration circuit to provide lithium ions to increase capacity of the electrode assembly.

18 . The battery of claim 17 , wherein the at least one face is a flat face of the wound assembly.

19 . The battery of claim 17 , wherein the high capacity regenerating electrode includes a separator encasing a current collector and a high capacity active material.

20 . The battery of claim 17 , wherein the regeneration circuit is activated by a controller responsive to signals from a battery management system configured to monitor battery capacity and degradation.

Assignees

• Ford Global Tech Llc

Inventors

• Deshpande Rutooj D
• Chikkannanavar Satish B

Classifications

• H01M4/58

  of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates · CPC title

• H01M2010/4271

  Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/058

  Construction or manufacture · CPC title

• H01M4/386

  Silicon or alloys based on silicon · CPC title