In recent years, the market of new energy vehicles and power batteries has been vigorously developed. However, due to the intensified market competition and unprecedented harsh price competition, the lithium battery market has gradually differentiated. Some lithium battery manufacturers have begun to turn their attention to some segments of the market with stable profits, fewer competitors and smaller market share, such as the high-rate lithium battery market.
Under the condition of large current discharge of conventional lithium batteries, the battery internal temperature rises rapidly and may short circuit, so there are security risks and continuous decay of life and other issues. For the requirements of large current discharge of batteries and the application scenarios that need instantaneous high power, it is necessary to adopt specially designed high-rate lithium batteries. High-rate lithium batteries are mainly used in electric tools, electronic cigarettes, aerial drones, automotive start-stop power supply and other market segments that need fast large current discharge. In the past few years, benefiting from the expansion of the above terminal market, the sales volume of high-rate lithium batteries has achieved very rapid growth, among which the attention of emerging markets such as drones and start-stop power supply has been continuously increasing.
The drone mainly uses pouch cell battery design. High-rate lithium batteries have relatively high technical requirements, fragmented market segments, and fewer lithium manufacturers participated in the past, so the competition situation is more moderate than the power market.
Due to the changing application scenarios and demanding use requirements, the UAV lithium battery has very strict requirements in terms of performance such as high rate, long cycle life and high temperature storage, which requires the lithium battery to constantly meet the requirements of high energy density, support long endurance, and meet the requirements of high-power use such as air tumbling and turning. UAV manufacturers have put forward high temperature storage requirements for lithium battery manufacturers, requiring that the battery pack is stored at 60 ° C for 30 days and the discharge time is not less than 1.5h, and the battery should be no bulging, no leakage, no rupture, no fire, no explosion.
