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

• US 10,343,527 B2
• Filed: 01/20/2015
• Issued: 07/09/2019
• Est. Priority Date: 01/20/2014
• Status: Active Grant

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Murata Manufacturing Co Limited
• Inventors: Hatta, Kazuhito, Shimosaka, Nobuaki, Machida, Masaki, Aoki, Manabu, Miyamoto, Masahiro
• Primary Examiner(s): Usyatinsky, Alexander
• Application Number:
  US15/109,918
• Publication Number:
  US 20160336614A1
• Time in Patent Office: 1,631 Days
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 50/64 Constructional details of batteries specially adapted for electric vehicles
• CPC Class Codes: B60L 7/10 Dynamic electric regenerative braking B60L7/22 takes precedence
• CPC Class Codes: H01M 10/0566 Liquid materials
• CPC Class Codes: H01M 10/0568 characterised by the solutes
• CPC Class Codes: H01M 10/0569 characterised by the solvents
• CPC Class Codes: H01M 10/058 Construction or manufacture
• CPC Class Codes: H01M 2300/0037 Mixture of solvents
• CPC Class Codes: H01M 4/36 Selection of substances as active materials, active masses, active liquids
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

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.

Claims

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.