The Ministry of Industry and Information Technology issued a new national standard for the lithium battery industry, and a large number of companies are facing bankruptcy

by:CTECHi     2021-08-09

Recently, the Ministry of Industry and Information Technology issued new national standards for the lithium battery industry, namely 'Lithium-ion Battery Industry Specification Conditions (2018 Edition)' and 'Interim Measures for the Administration of Lithium-ion Battery Industry Specification Announcements (2018 Edition)The competition in the industry has been shuffled and the process of closing down a large number of assembly plants without the strength and technology has also been accelerated.

Carefully study the new national standard for lithium batteries. The government will strictly control new lithium-ion battery (including supporting) projects that simply expand production capacity and have low technical levels. At the same time, they must have production qualifications. The process, equipment and related supporting facilities should also meet the following requirements:

1. It should have the ability to detect magnetic foreign matter and metal impurities such as zinc and copper in the positive and negative electrode materials of the battery. The detection accuracy is not less than 10ppb;

2, it shall have the ability to monitor the uniformity of the electrode after coating, and the measurement accuracy of the electrode coating thickness and length shall not be less than 2μm and 1mm, the use of online monitoring equipment for coating surface density is encouraged;

3. It should have the ability to monitor burrs after electrode shearing, and the measurement accuracy should not be less than 1μm;

4. It should have electrode drying technology, and the water content control accuracy should not be less than 10ppm;

5, it should have electrode winding Or the automatic production capacity of laminations, the control accuracy of electrode alignment is not less than 0.1mm;

6. There should be environmental conditions such as temperature, humidity and cleanliness during the injection process. Ability;

7. It shall have the ability of on-line detection of internal short circuit high voltage test (HI-POT) after battery assembly;

8. For a battery pack composed of multiple single cells or modules in series and parallel, it should have the consistency evaluation capabilities of the open circuit voltage and internal resistance of the single cells, and the measurement accuracy shall not be less than 1mV and 1mΩ respectively;

9. It shall have the capability of on-line detection of the battery pack protection board function.

Due to the implementation of the new national standard, the popularization of lithium batteries has been accelerated, but most lithium battery factories are currently striving for economies of scale. Everyone knows that the manufacturing of lithium batteries is completely different from lead-acid batteries: Lithium batteries (from cathode materials to batteries, to PACK) must have more capital and technology investment, which is completely technology, research and development, capital and management. Intensive industries.

It is understood that the current domestic production of cathode materials to batteries, and then PACK industrial chain production enterprises only account for about 20% of the entire lithium battery manufacturing enterprises, which also means After the new national standard for lithium batteries, 80% of the brands have either been acquired or closed down by themselves!

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