Coiled capacitor

Patent metadata

Field	Value
Publication number	US-2016379757-A1
Application number	US-201514752600-A
Country	US
Kind code	A1
Filing date	Jun 26, 2015
Priority date	Jun 26, 2015
Publication date	Dec 29, 2016
Grant date	—

Abstract

The present disclosure provides a coiled capacitor comprising a coil formed by a flexible multilayered tape, and a first terminating electrode (a first contact layer) and a second terminating electrode (a second contact layer) which are located on butts of the coil. The flexible multilayered tape contains the following sequence of layers: first metal layer, a layer of a plastic, second metal layer, a layer of energy storage material. The first metal layer forms ohmic contact with the first terminating electrode (the first contact layer) and the second metal layer (the second contact layer) forms ohmic contact with the second terminating electrode.

First claim

What is claimed is:

1 . A coiled capacitor comprising
a coil formed by a flexible multilayered tape, and a first terminating electrode (a first contact layer) and a second terminating electrode (a second contact layer) which are located on butts of the coil,
wherein the flexible multilayered tape contains the following sequence of layers: first metal layer, a layer of a plastic, second metal layer, a layer of energy storage material, and
wherein the first metal layer forms ohmic contact with the first terminating electrode (the first contact layer) and the second metal layer (the second contact layer) forms ohmic contact with the second terminating electrode.

2 . A coiled capacitor according to claim 1 , further comprises a dielectric core around which the flexible multilayered tape is coiled.

3 . A coiled capacitor according to claim 1 , wherein the energy storage material comprises rylene fragments.

4 . A coiled capacitor according to claim 3 , wherein the rylene fragments include one or more structures selected from the list comprising structures 1-21:

5 . A coiled capacitor according to claim 1 , wherein the energy storage material is selected from the list comprising doped oligoaniline and p-oligo-phenylene.

6 . A coiled capacitor according to claim 5 , wherein the doped oligoaniline is self-doped oligoaniline with SO 3 -groups or COO-groups on the phenyl rings of aniline.

7 . A coiled capacitor according to claim 5 wherein the doped oligoaniline is mix-doped by organic structure-inorganic/organic acid mixed to oligoaniline in oxidized state, wherein the organic structure is selected from the list comprising alkyl, aryl and polymers thereof and the inorganic/organic acid is selected from the list comprising SO 3 H, COOH, HCl, H 2 SO 4 , H 3 PO 4 , HBF 4 , HPF 6 , benzoic acid and derivatives thereof.

8 . A coiled capacitor according to claim 1 , wherein the energy storage material comprises a polymeric material soluble in organic solvents.

9 . A coiled capacitor according to claim 8 , wherein the polymeric material includes one or more structures selected from the list comprising structures 22 to 27:

wherein each R 1 and R 2 is independently selected from alkyl, aryl, substituted alkyl, and substituted aryl.

10 . A coiled capacitor according to claim 1 , wherein the energy storage material comprises a material that includes one or more supramolecular structures selected from the list comprising structures 28-62:

11 . A coiled capacitor according to claim 1 , wherein the energy storage material comprises a colloidal composite with dispersion (suspension) of electro-conductive anisometric particles in an insulator matrix.

12 . A coiled capacitor according to claim 11 , wherein the electro-conductive anisometric particles comprise an electro-conductive oligomer.

13 . A coiled capacitor according to claim 10 , wherein a material of the insulator matrix is selected from the list consisting of poly (acrylic acid) (PAA), poly(N-vinylpyrrolidone) (PVP), poly(vinylidene fluoride-hexafluoropropylene) [P(VDF-HFP)], ethylene propylene polymers, which include ethylene propylene rubber (EPR) and ethylene propylene diene monomer (EPDM), and silicone rubber (PDMSO) such as dimethyldicloro siloxane, dimethylsilane diol, and polydimethyl siloxane, polystyrene sulfonic acid (PSS).

14 . A coiled capacitor according to claim 1 , wherein the energy storage material comprises a surfactant selected from: dodecylbenzene sulfonate (DBSA), polyoxyethylene glycol alkyl ethers, polyoxypropylene glycol alkyl ethers, polyoxyethylene glycol octylphenol ethers, polyoxyethylene glycol sorbitan alkyl esters, sorbitan alkyl esters, and dobecyldimethylamine oxide.

15 . A coiled capacitor according to claim 1 , wherein the energy storage material comprises ceramic slurries, sputtered thin films, or molecularly ordered crystals.

16 . A coiled capacitor according to claim 1 , wherein the plastic is selected from the list comprising polypropylene (PP), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyethylene naphthalate (PEN), polycarbonate (PP), polystyrene (PS), and polytetrafluoroethylene (PTFE).

17 . A coiled capacitor according to claim 1 , wherein the thickness of the plastic layer cannot be less than 2 μm.

18 . A coiled capacitor according to claim 16 , wherein the thickness of the plastic layer varies from 2.5 μm to 52 μm.

19 . A coiled capacitor according to claim 1 , wherein the plastic layer comprises polypropylene and the thickness of the plastic layer is equal to 12 μm.

20 . A coiled capacitor according to claim 1 , wherein the plastic layer comprises polyethylene terephthalate (PET) and the thickness of the plastic layer is equal to 12 μm.

21 . A coiled capacitor according to claim 1 , wherein the material of the first metal layer and second metal layer independently selected from the list comprising Pt, Cu, Al, Ag, Au, Ni, Al:Ni and the metal foam.

22 . A coiled capacitor according to claim 1 , wherein the thickness of the first and second contact layers independently varies from 10 nm to 1000 nm.

23 . A coiled capacitor according to claim 1 , wherein the sheet resistance of the first and second contact layers independently cannot be less than 0.1 Ohm/Square.

24 . A coiled capacitor according to claim 23 , wherein the sheet resistance of the first and second contact layers independently varies from 0.1 Ohm/Square to 2.5 Ohm/Square.

25 . A coiled capacitor according to claim 21 , wherein the metal of the metal foam is selected from the list comprising Aluminum (Al), Nickel (Ni), Iron (Fe), and Copper (Cu).

26 . A coiled capacitor according to claim 21 , wherein a melting temperature of the metal foam is in the range 400 C-700 C.

27 . A coiled capacitor according to claim 21 , wherein metal content in the metal foam for electrode is in the range of 5% up to 30% by weight.

28 . A coiled capacitor according to claim 21 , wherein the metal foam is of closed “bubble” type with maximum conductance per metal content.

29 . A coiled capacitor according to claim 21 , wherein the size of “bubbles” in the metal foam is in a range from 100 nm to 100 000 nm.

30 . A coiled capacitor according to claim 1 , wherein the material of the first terminating electrode and second terminating electrode are independently selected from the list comprising Platinum (P

Assignees

• Capacitor Sciences Inc

Inventors

• Robinson Matthew R
• Furuta Paul
• Lazarev Pavel Ivan

Classifications

• H01G4/18 Primary

  of synthetic material, e.g. derivatives of cellulose (H01G4/16 takes precedence) · CPC title

• H01G4/012

  Form of non-self-supporting electrodes · CPC title

• H01G4/32 Primary

  Wound capacitors · CPC title

• H01G4/228

  Terminals · CPC title

• C08G73/1067

  Wholly aromatic polyimides, i.e. having both tetracarboxylic and diamino moieties aromatically bound · CPC title