1, ISO900 1 is the company's quality system.
2. Certification certificate of the company's battery products, such as UN 38.3/MSDS/EN 62133/CB/KC, etc.
Expand knowledge:
I. Production Scale and Technology of Lithium-ion Battery
An enterprise should meet the following conditions: it is legally incorporated in People's Republic of China (PRC) and has independent legal personality; Have the ability to independently produce, sell and serve related products in the lithium ion battery industry; Have the qualification of high-tech enterprises at or above the provincial level or independent research and development institutions and technology centers; The main products have technical invention patents.
Enterprises should meet the following scale requirements:
The annual production capacity of the battery is not less than 1 100 million watt-hours;
The annual production capacity of cathode materials is not less than 2,000 tons;
The annual production capacity of anode materials is not less than 2,000 tons;
The annual production capacity of diaphragm is not less than 20 million square meters;
The annual production capacity of electrolyte is not less than 2000 tons, and the annual production capacity of electrolyte is not less than 500 tons.
When the enterprise declares, the actual output of the previous year is not less than 50% of the actual production capacity.
Enterprises should adopt advanced technology, energy-saving, environmental protection, safety, stability and high degree of automation, adopt automation equipment in key processes such as electrode manufacturing, electrode winding or lamination, have environmental conditions such as temperature and humidity control and cleanliness control during liquid injection, and have an organic solvent recovery system. Processes, equipment and related supporting facilities shall meet the following requirements:
1. It should have the ability to detect harmful metal impurities such as iron, zinc and copper in the anode and cathode materials of the battery, and the detection accuracy should not be lower than1ppm;
2. There should be means to detect the thickness and length of the coating, with the measuring accuracy of 2μm and the measuring accuracy of the coating length not less than 65438±0mm；;
3. It should have the ability to sample and detect the burr generated after cutting the battery electrode, and the detection accuracy is1μ m;
4. Should have the ability to sample and detect the water content of the battery electrode after drying, and the detection accuracy is/10 ppm；;
5. It should have the ability to sample and detect the alignment of battery electrodes after winding/laminating, and the detection accuracy is 0.1mm;
6. Should have the ability to online detect internal short circuit after battery assembly (such as using HI-POT test);
7. For multiple batteries, the open-circuit voltage and internal resistance should be detected online, and the detection accuracy is 1mV and1mω respectively;
8. On-line detection with protection board function shall be available.
Second, the quality and performance of lithium-ion battery products
The product quality of an enterprise must conform to the relevant national standards or industry standards, and enterprises are encouraged to make enterprise standards higher than the national standards or industry standards through the tests required in Section 38.3 of Part III of the United Nations Recommendations on the Transport of Dangerous Goods-Manual of Tests and Standards. Enterprises should establish a quality management system and pass the certification, and establish a corresponding product quality traceability system. Equipped with quality inspection departments and full-time inspectors.
In addition to general requirements, the quality management system of an enterprise should also include the following contents: program control should include activities related to preventing and discovering internal short-circuit faults in the battery manufacturing process; Control measures that do not conform to Section 38.3 of Part III of the United Nations Manual of Tests and Standards.
Lithium-ion battery manufacturers must have the ability to detect the electrical performance and safety specified in relevant standards, and encourage enterprises to be equipped with environmental adaptability testing instruments and equipment, and have the ability to detect the environmental adaptability of batteries.