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Nonaqueous secondary battery and filling method for same

A secondary battery, non-aqueous technology, used in secondary batteries, non-aqueous electrolyte storage batteries, battery pack components, etc., can solve the problems of reduced battery capacity, electrolyte infiltration into electrode bodies, and prolonged injection time. Achieve the effect of suppressing the decrease in battery capacity and shortening the injection time

Inactive Publication Date: 2014-02-12
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that it is difficult to uniformly infiltrate the electrolyte solution into the electrode body
Therefore, the time required for the electrolyte solution to permeate the entire electrode body, that is, the injection time may become longer, or the battery capacity may decrease extremely due to repeated use of the battery.

Method used

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  • Nonaqueous secondary battery and filling method for same
  • Nonaqueous secondary battery and filling method for same
  • Nonaqueous secondary battery and filling method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] The nonaqueous secondary battery 1 was produced by the method for producing the nonaqueous secondary battery as described above.

[0082] Additionally, make figure 1 The X direction is the vertical direction (gravity direction) and the battery can 2 is placed for liquid injection.

[0083] In addition, if the figure 1 When the battery can 2 is placed in the vertical direction in the X direction, the heights of the two holes 7 become different, and the upper hole 7 is positioned higher than the electrode stack 3 . Air is exhausted from the upper hole 7 and liquid is injected from the lower hole 7 .

Embodiment 2

[0085] Based on the method for producing a nonaqueous secondary battery as described above, the following nonaqueous secondary battery (hereinafter, referred to as nonaqueous secondary battery 1 a ) was produced.

[0086] That is, the non-aqueous secondary battery 1 a has the same structure as the non-aqueous secondary battery 1 except that the heat-shrinkable film 5 is omitted.

[0087] Additionally, make figure 1 Place the battery can 2 vertically in the X direction for liquid injection.

Embodiment 3

[0089] Based on the above method of producing a nonaqueous secondary battery, a nonaqueous secondary battery 1a was produced in the same manner as in Example 2.

[0090] However, make figure 1 The Z direction is to place the battery can 2 vertically for liquid injection.

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Abstract

At least one of holes is formed at a position that is at a higher level than a surface of an electrolyte in use of a nonaqueous secondary battery, and that is not overlapped with an electrode laminate.

Description

technical field [0001] The invention relates to a non-aqueous secondary battery and a liquid injection method thereof. In addition, in the specification of the present application, liquid injection refers to injecting an electrolytic solution into a battery can of a non-aqueous secondary battery. Background technique [0002] A technique is known in which two holes are provided in the battery can for smooth liquid injection, and the inside of the battery can is depressurized by injecting liquid through one hole and exhausting air through the other hole. [0003] Patent Document 1 discloses a technology in which a plurality of liquid injection holes are provided on the sealing body that seals the outer can for smooth liquid injection, liquid is injected from one liquid injection hole, and air is exhausted from the other liquid injection holes. , thereby decompressing the inside of the outer tank. [0004] However, in the technique disclosed in Patent Document 1, since air b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M2/36H01M50/618H01M50/627
CPCH01M2/36H01M10/0525H01M50/30H01M50/618H01M50/627Y02E60/10Y02P70/50
Inventor 大平耕司冈本宏志
Owner SHARP KK