Rechargeable Lithium Polymer Electrolyte Battery for Oilfield Use

Patent metadata

Field	Value
Publication number	US-2016087271-A1
Application number	US-201414495839-A
Country	US
Kind code	A1
Filing date	Sep 24, 2014
Priority date	Sep 24, 2014
Publication date	Mar 24, 2016
Grant date	—

Abstract

A battery for oilfield applications which may include: a housing and an electrolytic cell disposed in the housing. The electrolytic cell may include: a cathode, an anode, and a polymeric separator disposed between the cathode and anode. The cathode may include a cathode composite material coated on a substrate. The cathode composite material may include: a polymeric continuous phase; an active material; a carbon source; and; a first lithium salt. The anode may comprise lithium. The polymeric separator may include: a first polymer crosslinked by a photoinitiator; and a second lithium salt.

First claim

What is claimed is:

1 . A battery for oilfield applications, comprising:
a housing; and an electrolytic cell disposed in the housing, the electrolytic cell comprising:
a cathode comprising a cathode composite material coated on substrate, the cathode composite material comprising:
a polymeric continuous phase;
an active material;
a carbon source; and;
a first lithium salt;

an anode comprising lithium; and
a polymeric separator disposed between the cathode and anode, the polymeric separator comprising:
a first polymer crosslinked by a photoinitiator; and
a second lithium salt.

2 . The battery of claim 1 , wherein the active material is a vanadium oxide with a formula of VO x where x ranges from 0.5-3.

3 . The battery of claim 2 , wherein the active material comprises V 6 O 13 .

4 . The battery of claim 1 , wherein the polymeric continuous phase comprises polyalkylene oxide.

5 . The battery of claim 1 , wherein the polymeric separator further comprises a metal oxide filler.

6 . The battery of claim 1 , wherein the first polymer comprises polyalkylene oxide.

7 . The battery of claim 1 , wherein the first polymer possesses a weight average molecular weight of ranging from 100,000 g/mol to 4,500,000 g/mol.

8 . The battery of claim 1 , wherein the polymeric separator further comprises a polyimide mesh or porous film.

9 . The battery of claim 1 , wherein a molar ratio of heteroatom in the polymeric continuous phase to lithium in the first lithium salt in the composite cathode is in a range from 10:1 to 30:1.

10 . The battery of claim 1 , wherein a molar ratio of heteroatom in the first polymer to lithium in the second lithium salt is in a range from 10:1 to 30:1.

11 . The battery of claim 1 , wherein the battery is electrically connected to at least one downhole tool.

12 . The battery of claim 1 , wherein the photoinitiator comprises one or more of an acyl phosphine oxide, an alpha hydroxyl ketone, or a benzophenone.

13 . The battery of claim 12 , wherein the photoinitiator comprises a blend of one of each of an acyl phosphine oxide, an alpha hydroxyl ketone, and a benzophenone.

14 . A method for the fabrication of a battery, the method comprising:
preparing a composite cathode material comprising an active material, a carbon source, a first lithium salt and a polymeric continuous phase; preparing a polymeric separator comprising a polymer electrolyte by crosslinking the polymer electrolyte with a photoinitiator; coating the composite cathode material on a substrate to form a cathode; laminating the cathode with the polymeric separator; placing a lithium anode offset to the cathode to form a combined electrode; winding the combined electrode to form a elongated body; and electrically connecting the anode at one axial end of the elongated body and the cathode substrate at the other axial end of the elongated body to conductive components.

15 . The method of claim 14 , further comprising:
placing the elongated body in a housing.

16 . The method of claim 14 , further comprising welding the cathode to a central mandrel around which the cathode and anode are wound.

17 . The method of claim 14 , wherein preparing the polymeric separator comprises dissolving at least a portion of polymer electrolyte in an organic solvent selected from acetonitrile, propan-2-ol, or combinations thereof.

18 . The method of claim 14 , wherein the photoinitiator comprises one or more of an acyl phosphine oxide, an alpha hydroxyl ketone, or a benzophenone.

19 . The method of claim 18 , wherein the photoinitiator comprises a blend of one of each of an acyl phosphine oxide, an alpha hydroxyl ketone, and a benzophenone.

20 . The method of claim 14 , wherein the preparing comprises coating the composite cathode material onto the substrate by a doctor blade method or hot melt extrusion.

21 . The method of claim 14 , wherein the preparing the composite cathode material comprises mixing the active material and the carbon source by one of ball milling, mechanofusion processing, or through the use of a mixer.

22 . A downhole system having a rechargeable lithium polymer battery, comprising:
at least one downhole tool disposed within a wellbore; a battery in electrical connection with the at least one downhole tool; wherein the battery comprises the battery of claim 1 .

23 . The downhole system of claim 22 , further comprising at least one motor in electrical connection with the battery.

24 . A method for using a battery in oilfield applications, the method comprising:
discharging the battery of claim 1 located on a tubular string and electrically connected to at least one downhole tool to power the at least one downhole tool.

25 . A method for recharging a battery in oilfield applications, the method comprising:
charging the battery of claim 1 located on a tubular string and electrically connected to a downhole motor.

Assignees

• Schlumberger Technology Corp

Inventors

• Jarvis Christine
• Teagle David
• Fraser Wendy
• Gilmore Susan
• Bracken Alex
• Betteridge David
• Ward Norman
• Zhang Wenlin
• Frerker Richard

Classifications

• H01M50/414

  Synthetic resins, e.g. thermoplastics or thermosetting resins · CPC title

• H01M4/1391

  of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title

• E21B17/028

  Electrical or electro-magnetic connections · CPC title

• H01M4/485 Primary

  of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · CPC title

• H02J7/00

  Circuit arrangements for charging or discharging batteries or for supplying loads from batteries · CPC title