Institute of Bioenergy and Process Research, Chinese Academy of Sciences released information that the Qingdao Energy Storage Center Cui Guanglei team developed "Green No. â… " solid state lithium battery system with the Chinese Academy of Sciences deep expedition team went to the Mariana Trench TS03 voyage test Mission to provide energy for the "Wanquan" abyss lander control system and CCD sensor, and successfully completed the application of 10,000-meter deep sea-depth demonstration, marking our country's second successful application of the all-deep lithium secondary battery in the world after Japan Power system of the country.
During the TS03 voyage in the Mariana Trench, the Wanquan No. abyss lander, which uses Qingne's solid state lithium battery, completed a total of 9 diveings at depths greater than 7,000 meters, of which 6 were over 10,000 meters and the largest Working depth of 10901 meters, the cumulative underwater working time of 134 hours, the maximum continuous working time of up to 20 hours. This marks the Chinese Academy of Sciences breakthrough in the sea of ​​deep sea power technology bottlenecks, mastered the core of deep sea power system technology.
It is understood that high-energy density deep-sea power technology is to limit the long life of deep-sea fishing bottleneck, a direct impact on the development of national autonomous deep-sea detection equipment. Previously, all-deep-sea power technology capable of withstanding 100 MPa pressure was only available in Japan. Although our country has developed the oil-filled pressure-resistant silver-zinc battery technology, and has been in the "dragon" manned submersible applications, but silver-zinc battery energy density is low (less than 60 watt hours / kg), the service life of Short (50 times), can not meet the application requirements of 11000 meters deep sea area long life ability. The existing high energy density commercial liquid lithium battery volatile electrolyte lead to thermal runaway, at a depth of 3000 meters below the sea there is a big security risk.
According to Cui Guanglei introduction, the newly developed high-capacity solid polymer lithium battery "Green No. â… " by third-party testing, the energy density of more than 250 watts / kg, 500 times the capacity to maintain more than 80% in many acupuncture and squeeze Pressure and other harsh test conditions to maintain very good safety performance and effectively overcome the liquid lithium battery easy thermal runaway safety risks to meet the long life, high safety requirements for deep submersibles, to the deep development of the national space station to provide adequate Energy power.