Matters needing attention in special customized military low-temperature lithium batteries

With the rapid development of the use of lithium-ion, the use of lithium batteries is further deepening into the military, aviation and other technical fields. These fields require the low-temperature use range of lithium-ion batteries to be -40 degrees or even lower. Due to its unique technical advantages, low-temperature lithium-ion batteries are currently widely used in the military field and become an indispensable source of energy in military operations. The application of military lithium battery packs covers many military fields such as land (personal soldier system, army combat vehicle, military communication equipment), sea (submarine, underwater robot), air (unmanned reconnaissance aircraft), sky (satellite, spacecraft), etc. . Ultra-low temperature lithium battery pack usually refers to the battery used in the environment of low temperature minus 50 ℃. At present, the low temperature lithium battery used in the military also works at such a temperature at least. However, due to the special use environment, the military ultra low temperature lithium battery standard must be adapted to Certain conditions. The energy density, battery life, volume and weight of military equipment power supplies are important factors that affect the combat capability of the army. Lithium batteries have high energy density, small size, light weight, long cycle life, low self-discharge rate, no memory effect, and low temperature performance. Good, reliable use, low maintenance cost, fast charging, long discharge time of large current and many other advantages, it is the first choice for military equipment power supply. Under normal circumstances, the design of military lithium batteries needs to consider long-term stable use in outdoor environments. In addition to wide temperature characteristics, special designs are required for structural sealing, anti-vibration, and explosion-proof. Stability and security are the first consideration. The production of military special lithium battery packs usually requires the following characteristics: 1. High reliability: It is necessary to ensure the stable output of the lithium battery at all times under any conditions. 2. High adaptability: Under different climatic conditions, it is necessary to ensure that it can be used normally under various special environments such as high-intensity electromagnetic, high/low atmospheric pressure, high radioactive radiation and high salinity. 3. High safety: The battery can also ensure safety during high-intensity impacts and blows, and will not cause personal injury or death due to the battery itself. The main features of military low-temperature lithium battery packs are as follows: ●Battery body: The modular monomer is formed by a detachable connection and a series-parallel combination. ●Temperature control module: self-heating function, which needs to meet the normal operation of special extreme environments. ●Protection module: Record the battery status, and can prompt in abnormal situations, or disconnect the battery's working status. ●SOC calculation module: accurately display the battery's power status, and need to have the function of automatically calibrating the display power to ensure that the battery's state of charge is displayed accurately. ●Control and communication module: realize the internal communication of the system and realize the data transmission. According to the discharge performance, it is divided into: rate type low temperature lithium battery, energy storage type low temperature lithium battery. A. Low-temperature rate-type lithium battery packs are used in infrared laser equipment, strong-light armed police equipment, and acoustic armed police equipment. B. Low-temperature energy storage lithium battery packs are widely used in military tablet computers, paratroopers, military navigators, UAV backup starting power supplies, special flight instrument power supplies, satellite signal receiving devices, marine data monitoring equipment, and atmospheric data monitoring equipment , Outdoor video recognition equipment, petroleum exploration and detection equipment, railway line monitoring equipment, power grid outdoor monitoring equipment, military warm shoes, on-board backup power supply. Summary: Low-temperature lithium battery packs have a wide range of applications, but because the cost is higher than conventional lithium batteries Many out. Therefore, under normal circumstances, low-temperature lithium battery products are mainly used in energy storage and power supply systems in special fields, military fields and industrial fields, or some vehicle power supply systems. Due to the technical reasons of the lithium battery itself. It is still a major obstacle to the popularization of wide-temperature lithium batteries. Disclaimer: The articles published on this site are all from the Internet and do not represent the views of this site. If there is any infringement, please contact to delete WeChat: Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact delete A: Lithium battery equalization system can solve the problem of inconsistent voltage of single cells in the battery pack