The project team carried out in-depth research and technical research on improving the weight ratio of power battery to energy density and greatly improving cycle life, including the development of new high-nickel cathode materials, silicon-carbon composite anode materials and new electrolytes. At present, monomer cells with a weight ratio of 260Wh/kg have been developed, and the capacity retention rate has reached 83.28% after 350 charge and discharge cycles. At the same time, power cells with energy densities of 280Wh/kg and 300Wh/kg have been developed. sample. The project breaks through the industrialized processing and preparation technology of high energy density batteries, and forms a standardized platform in material development, cell preparation process technology, electrochemical performance and safety performance testing. The research results will be further extended to square and round. Shaped power battery, covering a full range of power battery products.
According to the needs of different office environments, office projectors are roughly divided into three categories.
One is a conventional projector that is placed or hoisted in the conference room, the second is a Portable Projector that can be carried around, and the third is an ultra-short-throw projector for convenient work reports and speeches.
With the advent of the Internet era, the emergence of wireless office series represented by ViewSonic PJD6352, PJD6550LW, PJD6252L, and PJD6552LWS has added new members to the office projectors. The wireless Office Projector is realized by the built-in wireless module of the ordinary office projector. Wireless office enables people not to switch signal lines frequently during office meetings, allowing people to have a better experience in meetings.
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