High-rate lithium batteries have the advantage of releasing large amounts of energy in a short period of time, and are widely used in scenarios with high power demands such as unmanned aerial vehicles and energy storage systems. When choosing high-rate lithium batteries, one needs to select the cells based on electrochemical performance, safety, and cycle life.
Firstly, from the perspective of electrochemical performance, high-rate lithium batteries should have a high discharge capacity, usually expressed in terms of C rate, such as 5C, 25C or even higher. This determines the stability and efficiency of the battery during high-power output. Therefore, when making a choice, it is necessary to clearly understand the specific discharge current requirements of the application equipment.
Secondly, the internal resistance of the battery is one of the key factors affecting high-rate performance. The lower the internal resistance, the smaller the temperature rise of the battery during high-current discharge, and the lower the energy loss, resulting in a higher overall efficiency. Therefore, in the comparison of technical parameters, the battery solution with lower internal resistance should be given priority.
In terms of safety, high-rate lithium batteries need to have good thermal stability and overload tolerance. During high-rate discharge, a large amount of heat is generated. If the battery’s thermal management capability is insufficient, it may lead to thermal runaway and even safety accidents. Therefore, the selection of the battery material system is particularly important. For example, using lithium iron phosphate as the cathode material can provide higher thermal stability, while ternary materials have an advantage in energy density, but they need to be combined with a more rigorous safety protection mechanism.
Cycle life is also a factor that cannot be ignored. The high-rate usage environment causes significant battery wear. Therefore, one should choose batteries that can maintain a long cycle life under high-rate charging and discharging conditions.
Longsing New Energy, targeting the drone market, has collaborated with the international NAMI Research Institute to develop high-capacity, large-volume, lightweight and safe drone battery cells. The voltage of the high-voltage series battery cells is 3.85V, which has more advantages compared to the conventional 3.7V and 3.8V on the market. The capacities of the drone battery cells are: 10000mAh, 12000mAh, 16000mAh, and 22000mAh. We can assemble them according to your requirements into a 6S, 23.1V drone battery pack.
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