Battery, electrolyte, battery pack, electronic apparatus, electrically driven vehicle, electrical storage device, and electric power system

Patent metadata

Field	Value
Publication number	US-2016248115-A1
Application number	US-201415031064-A
Country	US
Kind code	A1
Filing date	Aug 28, 2014
Priority date	Nov 5, 2013
Publication date	Aug 25, 2016
Grant date	—

Abstract

Provided is a battery including a positive electrode, a negative electrode, a separator, and an electrolyte that contains particles, a resin, and an electrolytic solution. The shape of the particles includes a plane, a plane rate of the particles is greater than 40% and equal to or less than 100%, and a refractive index of the particles is equal to or greater than 1.3 and less than 2.4.

First claim

1 . A battery, comprising:
a positive electrode; a negative electrode; a separator; and an electrolyte that contains particles, a resin, and an electrolytic solution, wherein a shape of the particles includes a plane, a plane rate of the particles is greater than 40% and equal to or less than 100%, and a refractive index of the particles is equal to or greater than 1.3 and less than 2.4.

2 . The battery according to claim 1 ,
wherein the electrolyte is transparent.

3 . The battery according to claim 1 ,
wherein the plane includes at least any one of a crystal plane, a broken plane, and a cleavage plane.

4 . The battery according to claim 1 ,
wherein the particles are at least one kind of inorganic particles and organic particles.

5 . The battery according to claim 4 ,
wherein the inorganic particles are at least one kind of particles selected from the group consisting of silicon oxide, zinc oxide, tin oxide, magnesium oxide, antimony oxide, aluminum oxide, magnesium sulfate, calcium sulfate, barium sulfate, strontium sulfate, magnesium carbonate, calcium carbonate, barium carbonate, lithium carbonate, magnesium hydroxide, aluminum hydroxide, zinc hydroxide, boehmite, white carbon, zirconium oxide hydrate, magnesium oxide hydrate, magnesium hydroxide octahydrate, boron carbide, silicon nitride, boron nitride, aluminum nitride, titanium nitride, lithium fluoride, aluminum fluoride, calcium fluoride, barium fluoride, magnesium fluoride, tri-lithium phosphate, magnesium phosphate, magnesium hydrogen phosphate, ammonium polyphosphate, a silicate mineral, a carbonate mineral, and an oxide mineral, and the organic particles are at least one kind of particles selected from the group consisting of melamine, melamine cyanurate, melamine polyphosphate, crosslinked polymethyl methacrylate, polyethylene, polypropylene, polystyrene, polytetrafluoroethylene, polyvinylidene fluoride, polyamide, polyimide, a melamine resin, a phenol resin, and an epoxy resin.

6 . The battery according to claim 5 ,
wherein the silicate mineral is at least one kind selected from the group consisting of talc, calcium silicate, zinc silicate, zirconium silicate, aluminum silicate, magnesium silicate, kaolinite, sepiolite, imogolite, sericite, pyrophyllite, mica, zeolite, mullite, saponite, attapulgite, and montmorillonite, the carbonate mineral is at least one kind selected from the group consisting of hydrotalcite and dolomite, and the oxide mineral is spinel.

7 . The battery according to claim 1 ,
wherein the resin is at least one kind selected from the group consisting of polyvinylidene fluoride, polytetrafluoroethylene, a vinylidene fluoride-tetrafluoroethylene copolymer, an ethylene-tetrafluoroethylene copolymer, a vinylidene fluoride-tetrafluoroethylene copolymer, an ethylene-tetrafluoroethylene copolymer, a styrene-butadiene copolymer and a hydride thereof, an acrylonitrile-butadiene copolymer and a hydride thereof, an acrylonitrile-butadiene-styrene copolymer and a hydride thereof, a methacrylic acid ester-acrylic acid ester copolymer, a styrene-acrylic acid ester copolymer, a acrylonitrile-acrylic acid ester copolymer, an ethylene propylene rubber, polyvinyl alcohol, polyvinyl acetate, ethyl cellulose, a cellulose derivative, polyphenylene ether, polysulfone, polyether sulfone, polyphenylene sulfide, polyetherimide, polyimide, polyamide, polyamideimide, polyacrylonitrile, polyvinyl alcohol, polyether, an acrylic acid resin, polyester, and polyethylene glycol.

8 . The battery according to claim 1 ,
wherein the electrolytic solution contains an electrolyte salt, and a nonaqueous solvent in which the electrolyte salt is dissolved, and at least one of amass ratio (particle/resin) between the particles and the resin, and a mass ratio (particle/electrolyte salt) between the particles and the electrolyte salt is 15/85 to 90/10.

9 . The battery according to claim 1 ,
wherein the amount of particles contained is 5.6% by mass to 50.0% by mass based on the mass of the electrolyte.

10 . The battery according to claim 1 ,
wherein the amount of the resin contained is 5.6% by mass to 30.8% by mass based on the mass of the electrolyte.

11 . The battery according to claim 1 ,
wherein the electrolytic solution contains an electrolyte salt and a nonaqueous solvent in which the electrolyte salt is dissolved, and the amount of the electrolyte salt contained is 5.6% by mass to 30.8% by mass based on the mass of the electrolyte.

12 . The battery according to claim 1 ,
wherein the electrolyte is a gel-like electrolyte in which the electrolytic solution is retained by the resin.

13 . The battery according to claim 1 , comprising:
an electrode body in which the electrolyte is formed on both surfaces of at least one electrode of the positive electrode and the negative electrode, or on at least one surface of both surfaces of the separator, and which is formed by laminating, or laminating and winding the positive electrode, the negative electrode, and the separator.

14 . An electrolyte, containing:
particles; a resin; and an electrolytic solution, wherein a shape of the particles includes a plane, a plane rate of the particles is greater than 40% and equal to or less than 100%, and a refractive index of the particles is equal to or greater than 1.3 and less than 2.4.

15 . A battery pack, comprising:
the battery according to claim 1 ; a control unit that controls the battery; and an exterior package that accommodates the battery on an inner side.

16 . An electronic apparatus, comprising:
the battery according to claim 1 , wherein electric power is supplied from the battery.

17 . An electrically driven vehicle, comprising:
the battery according to claim 1 ; a conversion device to which electric power is supplied from the battery and which converts the electric power to a driving force of a vehicle; and a control device that performs an information processing related to vehicle control based on information about the battery.

18 . An electrical storage device, comprising:
the battery according to claim 1 , wherein the electrical storage device supplies electric power to an electronic apparatus that is connected to the battery.

19 . The electrical storage device according to claim 18 , further comprising:
an electric power information control device that transmits and receives a signal to and from other apparatuses via a network, wherein charge and discharge control of the battery is performed based on information that is received by the electric power information control device.

20 . An electric power system,
wherein electric power is supplied from the battery according to claim 1 , or the electric power is supplied to the battery from a power generator or a power network.

Assignees

• Sony Corp

Inventors

• Hatta Kazuhito
• Kagami Keiichi
• Shimosaka Nobuaki
• Koga Keizo

Classifications

• H01M10/0525

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

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M2300/002

  Inorganic electrolyte · CPC title

• H01M10/056 Primary

  characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes · CPC title