18650 is the most mature power battery product in lithium batteries

"The 18650 is currently the most mature power battery product. There is no maturity without safety ... Maturity also means safety, efficiency, low cost, high consistency and high reliability. "At the 13th China International Battery Technology Fair / Exhibition(CIBF2018) held in Shenzhen recently, Dr. Luozhaojun, chief engineer of Shenzhen Bike Power Battery Co., Ltd., gave his praise to the 1,8650 battery. This is not only because of the constant focus of the Bic battery on the 18650 battery, but also because the Bic battery discovered too many excellent features of the 18650 battery in the near-extreme development of the 18650 battery, and gradually demonstrated these characteristics on various types of 18650 batteries. On, With the 18650 battery out of their own world.

During the CIBF2018 exhibition, Battery China conducted an exclusive interview with Dr. Luozhaojun and made in-depth exchanges on the issue of 18650 battery safety.

The safety problem of power cells is a word that runs through the conversation with Dr. Luozhaojun. In her words, "For lithium electricity, safety is 1, followed by a lot of zeros, but if safety is not solved, There's no point in pursuing other performance improvements. "For the safety of Bic batteries, it is also Dr. Luozhaojun's proudest place. By the end of 2017, the Bic battery had installed 110,000 new energy vehicles, and so far there has been no safety accident caused by the core.

The upcoming implementation of the "Safety Requirements for Lithium-ion Power Battery for Electric Vehicles" stipulates that the acupuncture test in the power battery inspection is cancelled. In response, Dr. Luozhaojun said that in the actual use process, acupuncture rarely occurs, but the heat of the battery module is out of control. It has always been the focus of attention on the safety of power cells. Despite the elimination of acupuncture testing, battery companies need to do more to ensure that batteries are safer when heat from multiple factors is out of control.

For the safety performance of the newly listed Bic 18650-3 .0 AH high-energy core products and battery modules, Luozhaojun is proud to say: "Bic Battery has been developing this 18650-3 .0 AH core since 2015. After three years of completing the freezing of chemical design and freezing of process design, the directional blasting technology of high-capacity single core was successfully solved, and the single core failure in the entire package was implemented, and the whole package was intact. "

The almost harsh requirements are actually derived from the safety of the vehicle factory. "Now that the national standard requires no explosion or fire within 5 minutes, it is actually aimed at square large batteries, but cylindrical batteries can not have this problem no matter how long it takes. "Luozhaojun said frankly," The requirement of the vehicle factory for us is that you can never explode and catch fire. "Because of this, the Bic battery is" breaking the heart "for the safety of the battery. The newly listed 3,0AH18650 core uses high nickel material, which is crucial for the control of the heat release of the core. Luozhaojun also stated that the selection of positive materials can basically solve the problem of thermal runaway above 60. In addition, doing enough homework on hardware structure and overall module protection can achieve 100 <UNK> to avoid thermal runaway.

The 2.9AH high nickel + Silicon alloy 18650 battery that went offline in 2015 became the first electric core product in China to pass the whole package of thermal runaway detection; 3,050 AH's 18650 core passed the thermal runaway test on the entire vehicle; 3.2 AH core plans to go offline in 2018 and it is expected that there will be orders in 2019; 4. 5AH products have been developed and can be mass-produced at any time; 4. The 8AH core is being tested in small batches and has been tested in small batches.

It is based on the years of deep cultivation of the 18650 battery. The Bic battery is continuously developed along the cylindrical battery road and continues to have a product layout. The square battery and soft-pack battery will also become an important product line for the future development of Bic battery.

Ten years of deep cultivation have made the Bic battery achieve impressive results in the cylindrical core. And continue to support BMW, SAIC General Motors, FAW, Wuling, Yundu, Jianghuai, Zhongtai, Zero Run and other well-known domestic and foreign vehicle factories. To improve the goal of 2018, in addition to hoping to mass-produce the 3.2 AH and 4.8 AH cores, Luozhaojun still hopes to completely solve the security problem of the power cell package at the system level, "using safety and low cost to guard the health of the new energy industry. development. "

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