Ni-MH battery packs

　　The world's first high-efficiency battery separator technology was born in my country!

　　The power battery pack is called the core of the core components of electric vehicles, equivalent to the engine of a traditional car. The related technology is the bottleneck of the current development of electric vehicles. PI nanofiber battery separator, with its excellent properties such as high and low temperature resistance, chemical stability, durability and high porosity, will solve the current problems of poor safety, low charging speed, small operating temperature range, etc. of automobile power batteries or battery packs. Problems such as short service life make electric vehicles safer, more reliable and more comfortable.

　　A report from the national authoritative testing agency shows that PI diaphragm power batteries prepared with PI nanofiber diaphragms have obvious advantages in key technical indicators: high battery power density, which can increase the battery's charge and discharge rate by more than 4 times; long service life and good cycle performance The service life is increased by more than 700%; the heat generation is low, which reduces the temperature of the battery during high-current discharge; and it is safe. The PI separator can withstand high temperatures above 530 degrees Celsius. When a violent collision of a car causes perforation of the battery separator or dendrites pierce the separator during long-term use , the local overheating caused by micro-short circuit or small-area short circuit in the battery will not melt the PI separator and cause the perforation area to continue to expand, that is, it will not cause the short-circuit area to continue to expand and the temperature to be out of control, causing the battery to explode and catch fire.

　　At present, PI nanofiber separator technology has completed laboratory stage research, and it is expected to gradually achieve a production capacity of 40 million square meters within two years of the completion of the first phase of the project. If 50% is calculated as the number of new energy vehicles, the annual demand for battery separators in the Chinese automobile market alone will reach 5.5 billion square meters. The excellent properties of PI nanofibers can also be widely used in people's livelihood, environmental protection, medicine and health, special applications, etc.

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