Cell, cell pack, electronic device, electric vehicle, electricity storage apparatus, and power system

Patent metadata

Field	Value
Publication number	US-10343527-B2
Application number	US-201515109918-A
Country	US
Kind code	B2
Filing date	Jan 20, 2015
Priority date	Jan 20, 2014
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

Between an anode active material layer and a separator, a recess impregnation region of an anode side in which electrolytes and solid particles are disposed and including a recess that is located between adjacent anode active material particles positioned on the outermost surface of the anode active material layer is formed. Between a cathode active material layer and a separator, a recess impregnation region of a cathode side in which electrolytes and solid particles are disposed and including a recess that is located between adjacent cathode active material particles positioned on the outermost surface of the cathode active material layer is formed. The solid particles in the recess impregnation regions of the cathode side and the anode side have a concentration that is 30 volume % or more.

First claim

The invention claimed is:

1. A non-aqueous electrolyte secondary battery comprising:
a cathode including a cathode active material layer comprising cathode active material particles;
an anode including an anode active material layer comprising anode active material particles;
a separator that is located between the cathode active material layer and the anode active material layer;
an electrolyte comprising an electrolyte solution; and
solid particles having particle size smaller than the cathode active material particles or anode active material particles,
wherein at least one of a recess impregnation region of an anode side and a recess impregnation region of a cathode side, and at least one of a deep region of the anode side and a deep region of the cathode side are included,
wherein the recess impregnation region of the anode side refers to a region in which the electrolyte and the solid particles are disposed and that includes a recess that is located between adjacent anode active material particles positioned on the outermost surface of the anode active material layer,
wherein the deep region of the anode side refers to a region in which the electrolyte or the electrolyte and the solid particles are disposed and that is inside the anode active material layer, which is deeper than the recess impregnation region of the anode side,
wherein the recess impregnation region of the cathode side refers to a region in which the electrolyte and the solid particles are disposed and that includes a recess that is located between adjacent cathode active material particles positioned on the outermost surface of the cathode active material layer,
wherein the deep region of the cathode side refers to a region in which the electrolyte or the electrolyte and the solid particles are disposed and that is inside the cathode active material layer, which is deeper than the recess impregnation region of the cathode side,
wherein the solid particles of the at least one of the recess impregnation regions have a concentration that is 30 volume % or more with respect to a volume of the at least one of the recess impregnation regions, and
wherein the electrolyte solution comprises at least one kind of a dinitrile compound represented by Formula (1C):
NC—R61-CN  (1C)

where R61 represents a divalent hydrocarbon group or a divalent halogenated hydrocarbon group.

2. A battery pack comprising:
the non-aqueous electrolyte secondary battery according to claim 1 ;
a controller configured to control the non-aqueous electrolyte secondary battery; and
a package that houses the non-aqueous electrolyte secondary battery.

3. An electronic device comprising:
the non-aqueous electrolyte secondary battery according to claim 1 ,
wherein the electronic device is supplied with power from the non-aqueous electrolyte secondary battery.

4. An electric vehicle comprising:
the non-aqueous electrolyte secondary battery according to claim 1 ;
a conversion device configured to be supplied with power from the non-aqueous electrolyte secondary battery and convert the power into a driving force of the vehicle; and
a control device configured to perform information processing about vehicle control based on information about the non-aqueous electrolyte secondary battery.

5. A power storage device comprising:
the non-aqueous electrolyte secondary battery according to claim 1 ,
wherein the power storage device supplies power to an electronic device connected to the non-aqueous electrolyte secondary battery.

6. A power system that is supplied with power from the non-aqueous electrolyte secondary battery according to claim 1 or allows the non-aqueous electrolyte secondary battery to be supplied with power from a power generation device or a power network.

Assignees

• Murata Manufacturing Co

Inventors

• Hatta Kazuhito
• Shimosaka Nobuaki
• Machida Masaki
• Aoki Manabu
• Miyamoto Masahiro

Classifications

• H01M2300/0037

  Mixture of solvents · CPC title

• H01M10/0566

  Liquid materials · CPC title

• B60L2240/549

  Current · CPC title

• B60L2240/545

  Temperature · CPC title

• B60L2240/547

  Voltage · CPC title