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Nonaqueous electrolyte secondary battery, method for manufacturing nonaqueous electrolyte secondary battery, and vehicle comprising nonaqueous electrolyte secondary battery

A non-aqueous electrolyte and secondary battery technology, which is applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, and secondary batteries, and can solve problems such as inability to be applied unchanged

Active Publication Date: 2013-07-31
SANYO ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a non-aqueous electrolyte secondary battery equipped with a current blocking mechanism, since various conditions related to the operation of the current blocking mechanism are assumed to be overcharged under a constant rate of charging, the second The overcharging of the stage (2-stage overcharging) certainly cannot be applied as it is

Method used

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  • Nonaqueous electrolyte secondary battery, method for manufacturing nonaqueous electrolyte secondary battery, and vehicle comprising nonaqueous electrolyte secondary battery
  • Nonaqueous electrolyte secondary battery, method for manufacturing nonaqueous electrolyte secondary battery, and vehicle comprising nonaqueous electrolyte secondary battery
  • Nonaqueous electrolyte secondary battery, method for manufacturing nonaqueous electrolyte secondary battery, and vehicle comprising nonaqueous electrolyte secondary battery

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preparation example Construction

[0057] [Preparation of Electrolyte]

[0058] In a mixed solvent composed of 30% by volume of ethylene carbonate (EC), 30% by volume of ethylmethyl carbonate (EMC) and 40% by volume of dimethyl carbonate (DMC) as the nonaqueous solvent of the nonaqueous electrolytic solution, As an electrolyte salt, LiPF6 was added and mixed so as to be 1 mol / L, and 3.0 to 3.75% by mass of cyclohexylbenzene was added and mixed with respect to the mixed solvent to prepare an electrolyte solution.

[0059] [Creation of conductive path]

[0060] A description will be given of a procedure for fabricating a conductive path on the positive electrode side provided with a current blocking mechanism. First, the gasket 12 is arranged on the upper surface of the sealing plate 3 made of aluminum, the insulating member 13 and the conductive member 14 made of aluminum are arranged on the lower surface of the sealing plate 3, and the aluminum gasket is inserted into the through hole provided in each member. ...

Embodiment 1

[0069] The non-aqueous electrolytic solution prepared as described above was released from the injection port provided in the sealing body so that the amount of cyclohexylbenzene present in the outer packaging body was 3.4% by volume relative to the space volume in the outer packaging body. The liquid hole was injected, and the nonaqueous electrolyte secondary battery of Example 1 was produced by sealing the liquid injection hole with a blind rivet thereafter. Here, the volume of the space in the outer package is set to 63 cc, and the working pressure of the current blocking mechanism is set to 0.7 MPa.

Embodiment 2

[0071] In addition to injecting the non-aqueous electrolytic solution prepared as described above so that the amount of cyclohexylbenzene present inside the outer packaging body is 3.6% by volume relative to the space volume in the outer packaging body, using the same method as in Example 1 The non-aqueous electrolyte secondary battery of Example 2 was produced in the same manner.

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Abstract

A nonaqueous electrolyte secondary battery includes a current interruption mechanism in at least one of a conductive pathway from the positive electrode sheet to the outside of the outer body and a conductive pathway from the negative electrode sheet to the outside of the outer body. The current interruption mechanism interrupts electric current when the pressure in the outer body exceeds a predetermined value. The nonaqueous electrolyte contains an overcharge inhibitor. The overcharge inhibitor is contained in an amount of 3.0% or more and 4.5% or less with respect to the spatial volume in the outer body in terms of volume ratio.

Description

technical field [0001] The present invention provides a nonaqueous electrolyte secondary battery provided with a current blocking mechanism for blocking current when the pressure inside the battery outer package exceeds a predetermined value, a method for manufacturing the same, and a vehicle provided with the nonaqueous electrolyte secondary battery . Background technique [0002] In recent years, nonaqueous electrolyte secondary batteries typified by lithium ion secondary batteries have been widely used as drive power sources for portable electronic devices such as mobile phones, portable personal computers, and portable music players. In addition, based on the background of the environmental protection movement, the emission control of carbon dioxide gas and the like has been strengthened, so electric vehicles (EV), plug-in hybrid electric vehicles (PHEV), and hybrid electric vehicles using lithium-ion secondary batteries are actively being developed. Development of auto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M2/34H01M10/058
CPCY02E60/12H01M10/04H01M10/4235Y02T10/7011Y02E60/122H01M10/052H01M10/0567H01M50/578Y02E60/10Y10T29/49108Y02P70/50Y02T10/70
Inventor 南圭亮井寄将博横山喜纪藤原丰树山内康弘能间俊之原田宏纪高田登志广森岛龙太
Owner SANYO ELECTRIC CO LTD
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