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Electrochemical battery and manufacturing method therefor

An electrochemical and battery technology, applied in the field of electrochemical batteries, can solve problems such as packaging failure, reduce the area, reduce the total amount of glue overflow, and save the amount of glue

Active Publication Date: 2016-03-09
GUANGDONG ZHUGUANG NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because this method uses flowable glue, in the actual production process, the glue is easy to flow to the edge of the outgassing package, resulting in package failure

Method used

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  • Electrochemical battery and manufacturing method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1, different from Comparative Example 2, this embodiment comprises the following steps:

[0033] Adhesive layer setting: select a modified polypropylene film with a thickness of 40 μm as the base material (adhesive force is exhibited when the temperature is 80° C.), and a polyurethane tape with a thickness of 40 μm is used as the adhesive layer; paste the tape on The surface of the above-mentioned bare cells, and the tape covers 10% of the surface area of ​​the bare cells, and the distance between the tape and the side of the battery degassing package is 6mm; then put the bare cells in the outer packaging bag for top sealing and side sealing;

[0034] Finished battery preparation: Dry the above-mentioned top-sealed cells, inject liquid, and perform fixture formation at 85°C and 0.6 MPa after the electrolyte is fully infiltrated, and then shape, degas, and seal to obtain finished cells.

[0035]The rest are the same as those of Comparative Example 2, and will ...

Embodiment 2

[0036] Embodiment 2, different from Embodiment 1, this embodiment includes the following steps:

[0037] Adhesive layer setting: select a modified polypropylene film with a thickness of 40 μm as the base material (adhesive force is exhibited when the temperature is 80° C.), and a polyurethane tape with a thickness of 40 μm is used as the adhesive layer; paste the tape on The surface of the above-mentioned bare cells, and the tape covers 2% of the surface area of ​​the bare cells, and the distance between the tape and the side of the battery degassing package is 6mm; then put the bare cells in the outer packaging bag for top sealing and side sealing;

[0038] The rest are the same as in Embodiment 1 and will not be repeated here.

Embodiment 3

[0039] Embodiment 3, different from Embodiment 1, this embodiment includes the following steps:

[0040] Adhesive layer setting: select a modified polypropylene film with a thickness of 40 μm as the base material (adhesive force is exhibited when the temperature is 80° C.), and a polyurethane tape with a thickness of 40 μm is used as the adhesive layer; paste the tape on The surface of the above-mentioned bare cells, and the tape covers 15% of the surface area of ​​the bare cells, and the distance between the tape and the side of the battery degassing package is 6mm; then put the bare cells in the outer packaging bag for top sealing and side sealing;

[0041] The rest are the same as in Embodiment 1 and will not be repeated here.

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Abstract

The invention belongs to the field of electrochemical batteries and particularly relates to an electrochemical battery. The electrochemical battery comprises a bare battery cell, an electrolyte solution and an external package, wherein a rubber tape layer is arranged between the bare battery cell and the external package; the rubber tape layer comprises a base material and a bonding layer; the base material is 0.5-500 microns in thickness h1, and when the base material is heated to above 45 DEG C, the base material shows the bonding performance; the bonding layer is 0.5-500 microns in thickness h2, and when the temperature is lower than or equal to 45 DEG C, the bonding layer shows the bonding performance; and a rubber tape (before glue overflow) covers 2-90% of the surface area of the bare battery cell. The electrochemical battery has the advantages that the bonding layer has bonding force at a relatively low temperature, so that the operation is convenient when the battery cell is manufactured; the bonding layer is pasted to the surface of the bare battery cell or / and the inner side of the external package; and the base material shows bonding force after being heated, so that a bonding area between the bare battery cell and the external package can be effectively enlarged, the coverage area of the rubber tape on the bare battery cell is reduced, the glue consumption is reduced, the total amount of overflowed glue is reduced, and a mucilage glue layer is prevented from being diffused to a degassing packaging edge to influence the packaging effect.

Description

technical field [0001] The invention belongs to the field of electrochemical batteries, in particular to an electrochemical battery and a preparation method thereof. Background technique [0002] After entering the 21st century, various electronic device products such as mobile phones, notebooks, wearable devices, etc. emerge in an endless stream, which greatly enriches the lives of the majority of users; at the same time, electric vehicles and various energy storage power stations are also rapidly sprouting, developing, and grow. The above high-tech products have a common feature: high-performance batteries are required to act as energy storage components. [0003] Existing batteries mainly include primary batteries and secondary batteries; the so-called primary batteries, that is, batteries that cannot be recharged, mainly include carbon-zinc batteries, alkaline batteries, paste-type zinc-manganese batteries, cardboard zinc-manganese batteries, alkaline Zinc-manganese ba...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M10/04H01M50/121H01M50/129
CPCH01M10/0404H01M50/116Y02E60/10Y02P70/50
Inventor 杨玉洁
Owner GUANGDONG ZHUGUANG NEW ENERGY TECH
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