Battery with embedded fiber optic cable

Patent metadata

Field	Value
Publication number	US-2016028102-A1
Application number	US-201414338916-A
Country	US
Kind code	A1
Filing date	Jul 23, 2014
Priority date	Jul 23, 2014
Publication date	Jan 28, 2016
Grant date	—

Abstract

A method of fabricating an electrochemical energy storage cell such as a battery or supercapacitor involves positioning a portion of a fiber optic cable that includes at least one optical fiber sensor over a current collector layer. The electrode material of the energy storage cell is deposited over the current collector layer and the fiber optic cable.

First claim

What is claimed is:

1 . A method of fabricating an electrochemical energy storage cell, comprising:
positioning a portion of a fiber optic cable including at least one fiber optic sensor over a current collector layer of the electrochemical energy storage cell; and depositing electrode material over the fiber optic cable.

2 . The method of claim 1 , wherein positioning the portion of the fiber optic cable over the current collector comprises positioning directly on the current collector layer.

3 . The method of claim 1 , further comprising:
placing cell layers of the cell within a cell casing; and sealing the cell casing.

4 . The method of claim 3 , further comprising folding or rolling the cell layers before placing the cell layers within the cell casing.

5 . The method of claim 1 , further comprising bonding the fiber optic cable to the current collector layer.

6 . The method of claim 5 , wherein bonding the fiber optic cable comprise bonding using a binder of the electrode material.

7 . The method of claim 1 , wherein:
the current collector layer comprises an anode current collector layer; and depositing the electrode material comprises depositing anode electrode material.

8 . The method of claim 1 , wherein:
the current collector layer comprises a cathode current collector layer; and depositing the electrode material comprises depositing cathode electrode material.

9 . The method of claim 1 , wherein depositing the electrode material comprises:
depositing a slurry; and allowing the slurry to dry.

10 . The method of claim 1 , wherein depositing the electrode material comprises printing the electrode material over the fiber optic cable.

11 . The method of claim 10 , wherein printing the electrode material comprises at least one of jet printing and screen printing.

12 . The method of claim 1 , further comprising disposing a sealing material around the fiber optic cable before sealing the cell casing.

13 . The method of claim 12 , wherein sealing material comprises an elastomer.

14 . The method of claim 12 , wherein the sealing material comprises an epoxy.

15 . The method of claim 1 , wherein sealing the cell casing comprises:
disposing heat activated sealing layers at least over sealing edges of the cell casing; and sealing the cell casing by thermal fusion of the sealing layers.

16 . A method of fabricating a battery cell, comprising:
positioning a portion of a fiber optic cable having at least one fiber optic sensor disposed thereon over a current collector layer of a electrochemical energy storage cell; and depositing electrode material over the fiber optic cable.

17 . The method of claim 16 , further comprising:
folding or rolling the cell layers; and placing the cell layers within a cell casing.

18 . The method of claim 17 , further comprising disposing a sealing material around the fiber optic cable before sealing the cell casing.

19 . The method of claim 18 , wherein sealing material comprises an elastomer.

20 . The method of claim 18 , wherein the sealing material comprises an epoxy.

21 . An electrochemical energy storage cell, comprising:
a cell stack, comprising:
a first current collector layer;
a first electrode material disposed in a layer over the first current collector layer;
a fiber optic cable including at least one optical sensor embedded in the first electrode layer;
a second current collector layer;
a second electrode material disposed in a layer over the second current collector layer; and
a separator layer disposed between the first and second electrode layers.

22 . The cell of claim 21 , wherein the first electrode material comprises an anode material.

23 . The cell of claim 21 , wherein the cell stack is folded or rolled.

24 . The cell of claim 21 , further comprising an elastomeric material disposed at least partially around the fiber optic cable.

25 . The cell of claim 21 , further comprising an epoxy disposed at least partially around the fiber optic cable.

26 . The cell of claim 21 wherein the at least one optical sensor is configured to sense temperature, stress, strain, acoustic emission, ion concentration, chemistry, or concentration of a gas.

27 . The cell of claim 21 , wherein the cell is a battery cell.

28 . The cell of claim 27 , wherein the battery cell is a cylindrical, button, prismatic, or pouch type battery cell.

29 . The cell of claim 21 , wherein the cell is a super-capacitor.

Assignees

• Palo Alto Res Ct Inc

Inventors

• Bae Chang-Jun
• Shrader Eric J
• Raghavan Ajay
• Kiesel Peter
• Sahu Saroj

Classifications

• H01M10/48

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• H01G11/50

  specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation · CPC title

• H01G11/28

  arranged or disposed on a current collector; Layers or phases between electrodes and current collectors, e.g. adhesives · CPC title

• H01G11/06

  with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC] · CPC title

• H01M10/04 Primary

  Construction or manufacture in general (H01M10/058, H01M10/12, H01M10/28, H01M10/38 take precedence) · CPC title