Secondary battery with electrolytic solution including a methylene cyclic carbonate, battery pack, electric vehicle, energy storage system, electric power tool, and electronic unit including the same

Patent metadata

Field	Value
Publication number	US-9543613-B2
Application number	US-201213602961-A
Country	US
Kind code	B2
Filing date	Sep 4, 2012
Priority date	Sep 5, 2011
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A secondary battery includes: a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface, in which the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):

where R1 and R2 each are a hydrogen group, a halogen group, a monovalent hydrocarbon group, a monovalent halogenated hydrocarbon group, an oxygen-containing monovalent hydrocarbon group, or an oxygen-containing monovalent halogenated hydrocarbon group, and R1 and R2 may be bonded to each other.

First claim

The invention claimed is:

1. A secondary battery comprising:
a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface,
wherein the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):

where each of R1 and R2 corresponds to an oxygen-containing monovalent halogented hydrocarbon group, and R1 and R2 are bonded to each other.

2. The secondary battery according to claim 1 , wherein
the oxygen-containing monovalent halogenated hydrocarbon group is an alkoxy group having 1 to 12 carbon atoms, or a group in which one or more of hydrogen groups in the alkoxy group is substituted with a halogen group.

3. The secondary battery according to claim 1 , wherein a content of the methylene cyclic carbonate in the nonaqueous electrolytic solution is within a range of approximately 0.01 wt % to 10 wt % both inclusive.

4. The secondary battery according to claim 1 , wherein the package member is a battery can or a laminate film.

5. The secondary battery according to claim 1 , wherein the secondary battery is a lithium secondary battery.

6. The secondary battery according to claim 1 , wherein the nonaqueous electrolytic solution includes an unsaturated cyclic carbonate represented by an expression (2), and
conditions: that A be approximately 0.01 wt % to 5 wt % both inclusive; B be equal to approximately 0.01 wt % to 5 wt % both inclusive; and that B/A be equal to approximately 0.002 to 500 both inclusive are all satisfied, where a content of the unsaturated cyclic carbonate in the nonaqueous electrolytic solution is A (wt %), and a content of the methylene cyclic carbonate in the nonaqueous electrolytic solution is B (wt %):

where R11 and R12 each are a hydrogen group or an alkyl group.

7. The secondary battery according to claim 6 , wherein the unsaturated cyclic carbonate is vinylene carbonate (1,3-dioxo1-2-one) or methyl vinylene carbonate (4-methyl-1,3 -dioxo1-2-one).

8. The secondary battery according to claim 1 , wherein
the nonaqueous electrolytic solution includes a halogenated carbonate,
the halogenated carbonate includes one or both of a halogenated cyclic carbonate represented by an expression (4) and a halogenated chain carbonate represented by an expression (5),
conditions: that C be equal to approximately 0.01 wt % to 30 wt % both inclusive; that D be equal to approximately 0.01 wt % to 5 wt % both inclusive; and that D/C be equal to approximately 1/3000 to 500 both inclusive are all satisfied, where a content of the halogenated carbonate in the nonaqueous electrolytic solution is C (wt %), and a content of the methylene cyclic carbonate in the nonaqueous electrolytic solution is D (wt %):

where R17 to R20 each are a hydrogen group, a halogen group, a monovalent hydrocarbon group, or a monovalent halogenated hydrocarbon group, and one or more of R17 to R20 is a halogen group or a monovalent halogenated hydrocarbon group, and

where R21 to R26 each are a hydrogen group, a halogen group, a monovalent hydrocarbon group, or a monovalent halogenated hydrocarbon group, and one or more of R21 to R26 is a halogen group or a monovalent halogenated hydrocarbon group.

9. The secondary battery according to claim 8 , wherein the halogenated carbonate is 4-fluoro-1, 3-dioxolane-2-one.

10. The secondary battery according to claim 1 , wherein
the nonaqueous electrolytic solution includes ethylene carbonate (1,3-dioxolane-2-one) and propylene carbonate (4-methyl-1,3-dioxolane-2-one),
a mixture ratio of the ethylene carbonate and the propylene carbonate in weight ratio is within a range of approximately 75:25 to 25:75 both inclusive, and
a content of the methylene cyclic carbonate in the nonaqueous electrolytic solution is within a range of approximately 0.01 wt % to 10 wt % both inclusive.

11. A battery pack comprising:
a secondary battery;
a control section configured to control a usage state of the secondary battery; and
a switch section configured to switch the usage state of the secondary battery according to an instruction from the control section,
wherein the secondary battery includes a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface, and the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):

where each of R1 and R2corresponds to an oxygen-containing monovalent halogenated hydrocarbon group, and R1 and R2 are bonded to each other.

12. An electric vehicle comprising:
a secondary battery;
a conversion section configured to convert power supplied from the secondary battery into driving force;
a drive section configured to drive by the driving force; and
a control section configured to control a usage state of the secondary battery,
wherein the secondary battery includes a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface, and the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):

where each of R1 and R2corresponds to an oxygen-containing monovalent halogenated hydrocarbon group, and R1 and R2 are bonded to each other.

13. An energy storage system comprising:
a secondary battery;
one or two or more electrical units configured to receive power from the secondary battery; and
a control section configured to control power supply from the secondary battery to the electrical unit,
wherein the secondary battery includes a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface, and the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):

where each of R1 and R2corresponds to an oxygen-containing monovalent halogenated hydrocarbon group, and R1 and R2 are bonded to each other.

14. An electric power tool comprising:
a secondary battery; and
a movable section configured to receive power from the secondary battery,
wherein the secondary battery includes a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface, and the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):

where each of R1 and R2corresponds to an oxygen-containing monovalent halogenated hydrocarbon group, and R1 and R2 are bonded to each other.

15. An electronic unit comprising a secondary battery as a power supply, the secondary battery including a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface,
wherein the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):

Assignees

• Ihara Masayuki
• Kubota Tadahiko
• Sony Corp

Inventors

• Ihara Masayuki
• Kubota Tadahiko

Classifications

• H01M10/486

  for measuring temperature · CPC title

• H01M10/48

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• H01M50/107

  having curved cross-section, e.g. round or elliptic (H01M50/103, H01M50/109, H01M50/11 take precedence) · CPC title

• H01M50/227

  Organic material · CPC title

• H01M50/296

  characterised by terminals of battery packs (terminals of batteries H01M50/543) · CPC title