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Electrochemical battery and preparation method thereof

An electrochemical and battery technology, applied in the field of electrochemical batteries, can solve problems such as packaging failure, and achieve the effects of ensuring the packaging effect, better resistance to falling, and increasing adhesion

Active Publication Date: 2016-03-02
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 preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, different from the comparative example, the present embodiment comprises the following steps:

[0030] Adhesive layer setting: choose a biaxially oriented polypropylene film with a thickness of 40 μm as the base material, and a polyurethane tape with a thickness of 30 μm as the adhesive layer, and then punch holes on the tape. The hole shape is circular and the hole spacing is equal. The diameter of the hole is 5mm, (S2×h2) / (S1×h1)=0.5, and the porous tape is obtained for use; the porous tape is pasted on the surface of the above-mentioned bare cell, and the tape (including the hole area) covers 50% of the surface area of ​​the bare cell 50%, the distance between the tape and the side of the battery degassing package is 4mm; then put the bare cell in the outer packaging bag for top sealing and side sealing;

[0031] The rest are the same as those of the comparative example, and will not be repeated here.

Embodiment 2

[0032] Embodiment 2, different from Embodiment 1, this embodiment includes the following steps:

[0033]Adhesive layer setting: choose a biaxially oriented polypropylene film with a thickness of 40 μm as the base material, and a polyurethane tape with a thickness of 30 μm as the adhesive layer, and then punch holes on the tape. The hole shape is circular and the hole spacing is equal. The diameter of the hole is 5mm, (S2×h2) / (S1×h1)=0.8, and the porous tape is obtained for use; the porous tape is pasted on the surface of the above-mentioned bare cell, and the tape (including the hole area) covers 50% of the surface area of ​​the bare cell 50%, the distance between the tape and the side of the battery degassing package is 4mm; then put the bare cell in the outer packaging bag for top sealing and side sealing;

[0034] The rest are the same as in Embodiment 1 and will not be repeated here.

Embodiment 3

[0035] Embodiment 3, different from Embodiment 1, this embodiment includes the following steps:

[0036] Adhesive layer setting: choose a biaxially oriented polypropylene film with a thickness of 40 μm as the base material, and a polyurethane tape with a thickness of 30 μm as the adhesive layer, and then punch holes on the tape. The hole shape is circular and the hole spacing is equal. The diameter of the hole is 5mm, (S2×h2) / (S1×h1)=0.9, and the porous tape is obtained for use; the porous tape is pasted on the surface of the above-mentioned bare cell, and the tape (including the hole area) covers 50% of the surface area of ​​the bare cell 50%, the distance between the tape and the side of the battery degassing package is 4mm; then put the bare cell in the outer packaging bag for top sealing and side sealing;

[0037] 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 adhesive tape and electrochemical batteries and particularly relates to an adhesive tape and an electrochemical battery with the adhesive tape. The adhesive tape comprises a base material and an adhesive layer. The adhesive layer is attached to at least one surface of the base material, the adhesive tape is of a porous structure, the area of the hole region is S1, and the area of the non-hole region is S2; the thickness of the base material is h1, and the thickness of the adhesive layer is h2; (S2*h2) / (S1*h1) is smaller than or equal to 2. The electrochemical battery with the adhesive tape comprises a naked battery cell and an outer packaging part. The adhesive tape is arranged between the naked battery cell and the outer packaging part, and the naked battery cell and the outer packaging part closely adhere together. In the adhesive tape, (S2*h2) / (S1*h1) is smaller than or equal to 2, in other words, the volume of the portion, in the non-hole region, of the adhesive layer is smaller than or equal to twice of the volume of the portion, in the hole region, of the base material, the hole region has enough space to contain the portion, overflowing from the non-hole region, of the adhesive layer at the moment, and therefore the situation because of uncontrolled flowing of the adhesive layer, the packaging reliability of the battery is finally affected is limited.

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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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02H01M10/04
CPCC09J2203/33C09J7/243C09J7/25C09J2301/18H01M10/0431Y02E60/10Y02P70/50
Inventor 杨玉洁
Owner GUANGDONG ZHUGUANG NEW ENERGY TECH
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