Back to results
US 10,707,528 B2Granted
Secondary battery, battery pack, electric vehicle, electric power storage system, electric power tool, and electronic apparatus
AssigneeMurata Manufacturing Co., Ltd.
InventorsIzaya Okae, Kazumasa Takeshi, Tadahiko Kubota
Life of this patent
Estimating the term…
Abstract
The secondary battery includes an electrolyte layer including an electrolytic solution and a polymer compound, a positive electrode, and a negative electrode. The polymer compound includes one or both of a first polymer compound and a second polymer compound. The first polymer compound further includes a first homopolymer and one or both of a second homopolymer and a second copolymer. The second polymer compound further includes a third copolymer and one or both of a fourth homopolymer and a fourth copolymer.
Claims13
A secondary battery comprising an electrolyte layer including an electrolytic solution and a polymer compound, a positive electrode, and a negative electrode,
- wherein
- the polymer compound includes one or both of a first polymer compound and a second polymer compound,
- the first polymer compound further includes:
- a first homopolymer includes no vinylidene fluoride and has a solubility parameter of 17 MPa1/2 to 20 MPa1/2 and a weight average molecular weight of no less than 100,000;
- and
- one or both of a second homopolymer including vinylidene fluoride and a second copolymer including vinylidene fluoride, and
- the second polymer compound includes:
- a third copolymer including vinylidene fluoride and one or more of hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene, and monomethyl maleate and a copolymerization amount of one or more of hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene, and monomethyl maleate is not less than 15% by weight;
- and
- one or both of a fourth homopolymer including vinylidene fluoride and a fourth copolymer including vinylidene fluoride and one or more of hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene and monomethyl maleate and a copolymerization amount of one or more of hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene and monomethyl maleate is less than 15% by weight.
7 more elements
A battery pack comprising:
- a controller configured to control an operation of the secondary battery;
- and
- a switch configured to switch the operation of the secondary battery according to an instruction of the controller,
- wherein
- the secondary battery comprises an electrolyte layer including an electrolytic solution and a polymer compound, a positive electrode, and a negative electrode,
- the polymer compound including one or both of a first polymer compound and a second polymer compound,
- the first polymer compound further includes:
- a first homopolymer includes no vinylidene fluoride and has a solubility parameter of 17 MPa1/2 to 20 MPa1/2 and a weight average molecular weight of no less than 100,000;
- and
- one or both of a second homopolymer including vinylidene fluoride and a second copolymer including vinylidene fluoride, and
- the second polymer compound includes:
- a third copolymer including vinylidene fluoride and one or more of hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene, and monomethyl maleate and a copolymerization amount of one or more of hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene, and monomethyl maleate is not less than 15% by weight;
- and
- one or both of a fourth homopolymer including vinylidene fluoride and a fourth copolymer including vinylidene fluoride and one or more of hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene and monomethyl maleate and a copolymerization amount of one or more of hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene and monomethyl maleate is less than 15% by weight.
11 more elements
A electric vehicle comprising:
- a secondary battery;
- a convertor configured to convert electric power supplied from the secondary battery into drive power;
- a drive section configured to operate according to the drive power;
- and
- a controller configured to control an operation of the secondary battery,
- wherein
- the secondary battery comprises an electrolyte layer including an electrolytic solution and a polymer compound, a positive electrode, and a negative electrode,
- the polymer compound includes one or both of a first polymer compound and a second polymer compound,
- the first polymer compound further includes:
- a first homopolymer includes no vinylidene fluoride and has a solubility parameter of 17 MPa1/2 to 20 MPa1/2 and a weight average molecular weight of no less than 100,000;
- and
- one or both of a second homopolymer including vinylidene fluoride and a second copolymer including vinylidene fluoride, and
- the second polymer compound includes:
- a third copolymer including vinylidene fluoride and one or more of hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene, and monomethyl maleate and a copolymerization amount of one or more of hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene, and monomethyl maleate is not less than 15% by weight;
- and
- one or both of a fourth homopolymer including vinylidene fluoride and a fourth copolymer including vinylidene fluoride and one or more of hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene and monomethyl maleate and a copolymerization amount of one or more of hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene and monomethyl maleate is less than 15% by weight.
13 more elements
Dependencies are inferred from the claim text.