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A kind of preparation method of electrochemical cell

An electrochemical and battery technology, applied in the field of energy storage, can solve the problems of cumbersome procedures, long time-consuming, occupying production costs, etc., and achieve the effects of reducing the volatilization speed, ensuring the amount of liquid injection, and shortening the warm-up time

Active Publication Date: 2018-08-03
GUANGDONG ZHUGUANG NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For organic electrolyte batteries, it is usually necessary to dry the cells and then inject liquid. After the liquid injection, a slow electrolyte infiltration process is performed, and the formation begins when the electrolyte is fully immersed. The above process is cumbersome and time-consuming. high production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1, different from Comparative Example 1, this embodiment comprises the following steps:

[0032] Preheating: place the cell to be dried on a hot press (the temperature of the hot plate of the hot press is 80°C), and apply a surface pressure of 0.1MPa, so that the hot plate of the hot press heats the cell;

[0033] Drying: When the cell is preheated to 78°C (the temperature required for cell drying), vacuumize the furnace to 150Pa, and keep the temperature in the furnace at 80°C for drying; when the water content inside the cell is lower than 200ppm, complete the drying ;

[0034] Injection: Keep the cell in an environment of 150Pa, inject liquid into the cell (electrolyte temperature is 25°C), and after the electrolyte completely seals the bare cell, remove the vacuum, then vacuum seal it, and let it stand still. until the electrolyte is fully infiltrated;

[0035] The rest are the same as those of the comparative example, and will not be repeated here.

Embodiment 2

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

[0037] Preheating: place the cell to be dried on a hot press (the temperature of the hot plate of the hot press is 80°C), and apply a surface pressure of 0.01MPa, so that the hot plate of the hot press heats the cell;

[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] Preheating: place the cell to be dried on a hot press (the temperature of the hot plate of the hot press is 80°C), and apply a surface pressure of 1 MPa, so that the hot plate of the hot press heats the cell;

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

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PUM

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Abstract

The invention belongs to the field of electrochemical batteries, and particularly relates to a preparation method of electrochemical batteries: mainly including four steps of preheating, drying, liquid injection and preparation of finished battery cells. First, the batteries are quickly preheated to the temperature required for drying, Shorten the preheating time; then place the cell in a high-vacuum environment to lower the boiling point of the solvent, speed up the drying speed, and shorten the drying time; inject liquid under the condition of not releasing the vacuum after drying. At this time, during the drying process, due to the cell Being in a high-vacuum environment for a long time can completely discharge the gas components in the micropores of the cell electrodes, providing enough space for the electrolyte to infiltrate, thus shortening the electrolyte infiltration time after liquid injection.

Description

technical field [0001] The invention belongs to the field of energy storage, in particular to a preparation method of an electrochemical battery. 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, low-cost 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 batteries, b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/04
CPCH01M10/04Y02P70/50
Inventor 杨玉洁
Owner GUANGDONG ZHUGUANG NEW ENERGY TECH
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