The 4th China Power Battery Conference was grandly held in Sanzheng Banshan Hotel, Tangxia, Dongguan. The second China Power Battery “Safety Star” Brand Selection and the 2nd Power Battery Intelligent Equipment “Technical Innovation Award” Selection and Awarding Ceremony were also held at the same time. Finally, Shenzhen Zhuoneng New Energy Co., Ltd. ( Hereinafter referred to as “Zoneng New Energy”) won the honor of “Safety Star Award”.
A group photo of award-winning companies
In recent years, safety has become an important indicator for measuring power batteries. Wang Zidong, director of the National 863 Power Battery Test Center of the North China Vehicle Research Institute, said at the meeting that the country will put safety in a more important position when formulating power battery standards in the future. It is believed that in the near future, the emphasis on safety will exceed energy density and become the most critical element for measuring battery performance.
In the context of this industry, "Power Battery" magazine and Power Battery Network launched the China Power Battery “Safety Star” brand selection activity. The intention is to select the most worthy power battery products recommended to customers and consumers through fair, impartial, and open voting and review methods, so that battery products with high safety, quality and excellent performance can truly enter the end market through this selection .
Founded in 2011, Zhuoneng New Energy specializes in the research and development, production and sales of 18650 cylindrical lithium-ion batteries. The company is headquartered in Longgang, Shenzhen, with three production bases, three subsidiaries, and 1 million batteries per day. In August 2013, the subsidiary Guangxi Zhuoneng New Energy Technology Co., Ltd. was established to carry out the development and construction of lithium-ion power batteries, new energy vehicle power systems and energy storage projects.
Zhuoneng New Energy won the “Safety Star Award”
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.