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Nonaqueous electrolyte secondary battery, method for manufacturing nonaqueous electrolyte secondary battery

A non-aqueous electrolyte and secondary battery technology, which is applied in the direction of non-aqueous electrolyte battery electrodes, electrolyte battery manufacturing, non-aqueous electrolyte batteries, etc., and can solve the problems that cannot be applied unchanged as it is

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
  • Nonaqueous electrolyte secondary battery, method for manufacturing nonaqueous electrolyte secondary battery
  • Nonaqueous electrolyte secondary battery, method for manufacturing nonaqueous electrolyte secondary battery

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preparation example Construction

[0059] [Preparation of non-aqueous electrolyte solution]

[0060] 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, Add LiPF in a way to reach 1mol / L 6 They are mixed as an electrolyte salt, and then 3.0 to 3.75% by mass of cyclohexylbenzene is added to the mixed solvent and mixed to prepare an electrolytic solution.

[0061] [Creation of conductive path]

[0062] 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, resin gaskets 12 are arranged on the upper surface of the sealing plate 3 made of aluminum, and insulating members 13 made of resin and conductive members 14 made of aluminum are arranged on the lower surface of the sealing plate 3. The cylindrical portion 6a of the positive elect...

Embodiment 1

[0071] The non-aqueous electrolytic solution prepared as described above is made so that the amount of cyclohexylbenzene present inside the outer packaging body is 2.85 g / m with respect to the formation area of ​​the positive electrode active material layer in the positive electrode core surface 2 The method is to inject from the liquid injection hole provided in the sealing body, and then seal the liquid injection hole with a blind rivet. Thereafter, charge with a constant current of 25A to a given voltage, and after reaching the given voltage, carry out constant voltage charging at this voltage, charge until the termination current is 0.25A, and set the battery's depth of charge (SOC) to 60%. Thereafter, an aging treatment at 75° C. for 22 hours was performed to manufacture the prismatic lithium ion secondary battery of Example 1. And, the sum of the regions where the positive electrode active material layer is formed in the front and back of the positive electrode core is s...

Embodiment 2

[0073] Except that the non-aqueous electrolytic solution prepared as described above is made so that the amount of cyclohexylbenzene present inside the outer packaging body is 3.06 g / m with respect to the formation area of ​​the positive electrode active material layer in the surface of the positive electrode core body 2 The prismatic lithium-ion secondary battery of Example 2 was produced in the same manner as in Example 1, except that it was injected from the liquid injection hole provided in the sealing body.

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PUM

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Abstract

A method for manufacturing a nonaqueous electrolyte secondary battery including a current interruption mechanism that interrupts electric current includes disposing, in the outer body, an electrode assembly and a nonaqueous electrolyte containing a compound having at least one of a cyclohexyl group and a phenyl group, adjusting the nonaqueous electrolyte to contain the compound having at least one of a cyclohexyl group and a phenyl group in an amount of from 2.5 g / m2 to 5.0 g / m2 with respect to a formation area of a positive electrode active material layer on a positive electrode substrate surface, and thereafter performing aging treatment at 60 DEG C. or more at a state of charge of 60% or more. This battery exhibits excellent output characteristics in a low temperature condition and can sufficiently ensure reliability even when the battery is overcharged through two-step charging in a low temperature condition.

Description

technical field [0001] The present invention relates to a method of manufacturing a non-aqueous electrolyte secondary battery, a non-aqueous electrolyte secondary battery, and a vehicle provided with a current blocking mechanism for blocking current when the pressure inside a battery exterior body exceeds a predetermined value. 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 automobiles (HEV), etc. In ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M10/0567H01M10/0525
CPCY02E60/12H01M10/0413H01M2/345Y02T10/7011Y02E60/122H01M4/13H01M4/366H01M10/052H01M10/0567H01M10/4235H01M2200/20H01M50/578Y02E60/10Y10T29/4911Y02P70/50Y02T10/70
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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