From January to October 2017, Zhuoneng New Energy has achieved sales of nearly 1.5 billion yuan. It is estimated that the annual shipment will reach 290 million units and the sales will be 1.9 billion yuan. As of the end of November this year, the company's main product INR18650P-2600mAh cylindrical power lithium battery has sold 36.86 million units, and the annual sales are expected to reach 44 million units.

 

Generally, the main factors affecting battery safety are as follows: 1. Ternary pyrolysis of positive electrode material; 2. Combustion of electrolyte; 3. Combustion of negative electrode lithium; 4. Puncture and rupture of separator; 5. .The safety protection of the container fails, etc. Through the analysis of the above factors affecting battery safety, Zhuoneng New Energy has made targeted breakthroughs and greatly improved the safety of its power lithium batteries.

 

In terms of cathode materials, Zhuoneng New Energy enhances the thermal stability of the materials by improving the structure of ternary particles and coating with nano-ceramics; in terms of electrolyte, the use of special additives improves the heat resistance and heat resistance of the electrolyte. Decomposition temperature and achieve flame retardancy; in terms of negative electrode, through the improvement of the type of negative electrode material, structure and morphology, and the process of making pole pieces, to ensure the insulation and precipitation of lithium, and improve the safety performance; in terms of separator, the use of polymer materials will improve the safety performance. The strength and modulus of the diaphragm are simultaneously increased to prevent the diaphragm from being punctured, and the surface of the diaphragm is coated with a special polymer material and ceramic mixed coating to enhance the puncture resistance and assist the diaphragm to close the pores under high temperature conditions to prevent partial short circuit of the battery In the case of container safety protection, the vent structure of the cap is optimized, and the accuracy of the cap parts is improved, thereby improving the accuracy of the CID and explosion-proof valve from 0.3MPa tolerance to 0.1MPa, ensuring the internal pressure loss of the battery Under the circumstances, it can be opened effectively and timely.

 

 

Zhuoneng New Energy Power Lithium Battery Products

 

Through the above improvements, the safety performance of the battery itself is ensured under the mutual cooperation of various structures to fully comply with the national power battery and UL performance tests. Up to now, INR18650P-2400, 2600, 2800mAh and other cylindrical power lithium-ion batteries produced by Zhuoneng New Energy are in line with GBT-31484-2015/31485-2015 and other national electric vehicle power battery tests, S-2500 Cylindrical digital lithium-ion batteries such as, 3000mAh, etc. have passed the national standard safety test, and have obtained UL, CE, UN38.3 and other international certifications.