Military Battery | What are the special requirements for materials of military lithium batteries?
With the continuous progress and maturity of lithium battery processing technology, the processing cost of lithium battery is also reducing. Lithium batteries can be widely used in power vehicles, energy storage equipment, military equipment, medical machinery and other fields. The progress of lithium battery technology will not only accelerate the development of digital products, but also promote the development of national defense, military industry and telecommunications technology.
The application of military lithium battery covers many arms, such as land (individual soldier system, army combat vehicle, military communication equipment), sea (submarine, underwater robot), air (unmanned reconnaissance aircraft), space (satellite, spacecraft), etc. The energy density, endurance time, volume and weight of military equipment power supply are important factors affecting the combat capability of the army. Military lithium battery has many advantages, such as high energy density, small volume, light weight, long cycle life, small self discharge rate, no memory effect, good low-temperature performance, reliable use, low maintenance cost, fast charging, long high current discharge time and so on. It is the first choice of military equipment power supply.
The design requirements of military lithium batteries are much more stringent than those of civilian batteries. The specific requirements for military lithium batteries are as follows: high safety: in the case of high-intensity impact and attack, the battery should ensure safety and will not cause casualties. High reliability: to ensure the effectiveness and reliability of lithium battery in use. High environmental adaptability: ensure normal use under different climatic conditions, high-intensity electromagnetic environment, high / low pressure environment, high radioactive radiation environment and high salt environment.
Expand the application of special equipment of lithium battery and become a new growth point. Lithium ion batteries have gradually become the dominant equipment in the field of lithium-ion communication and special energy storage equipment; At the same time, lithium-ion batteries have gradually entered the fields of underwater equipment, vehicle equipment and so on. The application of battery energy storage system represented by lithium-ion battery in special fields has the advantages of increasing equipment concealment, improving equipment reliability, increasing endurance and navigation time, reducing logistics requirements related to fuel support, etc.
For small lithium batteries (such as mobile phone batteries), it requires positive and negative active materials to have as high electrochemical specific capacity as possible, so as to ensure the high capacity of lithium batteries. Therefore, the electrochemical specific capacity of materials is mainly considered in the selection of positive and negative materials.
For medium-sized and large-scale lithium batteries, it requires positive and negative active materials to have as high electrochemical specific capacity as possible. Under the working principle of lithium battery, it should have excellent reliability and safety. Therefore, in the selection of anode and cathode materials, we should consider the electrochemical specific capacity of materials and pay attention to the safety of materials.