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Nonaqueous electrolytic solution, nonaqueous electrolytic secondary battery, battery pack, electronic device

A non-aqueous electrolyte and non-aqueous electrolyte technology, which is applied in secondary batteries, circuits, electric vehicles, etc., can solve the problems of popularization of portable electronic devices, deterioration of battery characteristics, etc., and achieve the effect of excellent battery characteristics

Inactive Publication Date: 2013-02-06
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the proliferation of portable electronic devices has created problems
Specifically, when the secondary battery is often placed in a high-temperature environment during transportation or use, battery characteristics deteriorate

Method used

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  • Nonaqueous electrolytic solution, nonaqueous electrolytic secondary battery, battery pack, electronic device
  • Nonaqueous electrolytic solution, nonaqueous electrolytic secondary battery, battery pack, electronic device
  • Nonaqueous electrolytic solution, nonaqueous electrolytic secondary battery, battery pack, electronic device

Examples

Experimental program
Comparison scheme
Effect test

no. 3 approach

[0037] (3) Third Embodiment (Example of Battery Pack Using Nonaqueous Electrolyte Secondary Battery)

[0038] (4) Fourth Embodiment (Example of Power Storage System Using Nonaqueous Electrolyte Secondary Battery)

no. 1 approach

[0040] [battery structure]

[0041] figure 1 is a sectional view showing an exemplary configuration of the nonaqueous electrolyte secondary battery according to the first embodiment of the present invention. The nonaqueous electrolyte secondary battery is a lithium ion secondary battery in which negative electrode capacity is represented by a capacitive component based on storage and release of lithium (Li), an electrode reaction material. This nonaqueous electrolyte secondary battery is of a cylindrical type, and includes a substantially hollow cylindrical battery case 11 and a wound electrode unit 20 including a pair of belt-shaped positive electrodes 21 and negative electrodes 22 wound together with a separator 23 laminated therebetween . The battery case 11 is made of iron (Fe) plated with nickel (Ni), and has a closed end and an open end. The battery case 11 includes an electrolytic solution injected thereinto, and the separator 23 is impregnated with the electrolytic ...

no. 2 approach

[0192] [battery structure]

[0193] image 3 is an exploded perspective view showing an exemplary configuration of a nonaqueous electrolyte secondary battery according to a second embodiment of the present invention. The secondary battery is configured to include a film-like exterior member 40 , and a wound electrode unit 30 accommodated in the exterior member 40 , wherein a positive electrode lead 31 and a negative electrode lead 32 are connected to the wound electrode unit 30 . The battery is therefore small, lightweight and thin.

[0194] For example, the cathode lead 31 and the anode lead 32 are drawn out in the same direction of the exterior member 40 . The cathode lead 31 and the anode lead 32 are formed using, for example, metal materials such as aluminum, copper, nickel, and stainless steel. These metal materials are formed in, for example, a thin plate or a mesh.

[0195] The exterior member 40 is formed using, for example, a rectangular aluminum laminated film in...

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Abstract

The invention provides a nonaqueous electrolytic solution, a nonaqueous electrolytic secondary battery, a battery pack, and an electronic device. A nonaqueous electrolytic secondary battery includes: a positive electrode; a negative electrode; and an electrolyte that contains a nonaqueous electrolytic solution, wherein the nonaqueous electrolytic solution contains at least one phosphorus compound selected from the group consisting of phosphine oxide, phosphonic ester, and phosphinic ester, and the phosphine oxide, the phosphonic ester, and the phosphinic ester are phosphorus compounds represented by the following formulae (I), (II), and (III), respectively.

Description

technical field [0001] The present invention relates to a nonaqueous electrolytic solution, a nonaqueous electrolyte secondary battery, a battery pack, an electronic device, an electric vehicle, an electric power storage device, and an electric power system. Specifically, the present invention relates to a nonaqueous electrolyte secondary battery containing a phosphorus compound in an electrolyte. Background technique [0002] There is a strong demand for smaller, lighter and longer-lasting portable electronic devices such as camera-integrated VTRs (Video Tape Recorders), portable phones and laptop personal computers that have become widely used in recent years. In this regard, as portable power sources for such electronic devices, batteries, particularly secondary batteries that are lightweight and capable of providing high energy density have been developed. In particular, secondary batteries (lithium-ion secondary batteries) that utilize storage and release of lithium (L...

Claims

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Application Information

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IPC IPC(8): H01M10/0569H01M10/0525
CPCY02E60/122H01M10/0569Y02T10/7011H01M10/0525Y02E60/10Y02T10/70
Inventor 船田裕佑洼田忠彦
Owner SONY CORP
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