Why power lithium batteries should not blindly pursue high energy density
Apr 03, 2023
Why should power lithium batteries not blindly seek high energy density? With the development trend of new power cars, power lithium battery skills are also constantly improving. At present, the single specific energy of lithium iron phosphate battery is 160wh/kg, the specific energy of the system software reaches 130, and the energy density of the 18650 monomer using the NCA system has reached 240Wh/kg, and the energy density of the system has reached 150Wh/kg.
In addition to the continuous addition of power regulations, the reduction of subsidies has also led to more stringent cost requirements for power lithium battery companies. How companies choose to become a manufacturing industry is highly valued. The new power car manufacturing industry should not only pay attention to the relative density of rechargeable batteries, but also integrate the lightweight and reduced energy consumption of the car body.
The special energy of the power lithium battery has a certain relationship with safety, the higher the energy, the higher the skill standard of the safety level, and now, the energy ratio of the rechargeable battery can not be directly improved, and the current policy does not need to overstimulate the distance. How to balance the performance and safety of power lithium batteries? There are many ways to improve the distance of pure electric cars, and the direct way is to add battery power and add battery power. The key to the specific energy of the progressive power lithium battery is the nickel content in the negative electrode material of the rechargeable battery, the higher the nickel content, the higher the specific energy of the power lithium battery, the worse the reliability of the rechargeable battery, and the greater the probability that the rechargeable battery heating cannot be controlled. Lithium battery manufacturers must strictly control the nickel in the guess of lithium batteries, in order to seek the perfect efficient power density and low cost, do not need to blindly follow the trend to add nickel components, the key is to master safety factors, not more critical characteristics, about car groups, in the car and maintenance quality to reduce the distance, rather than briefly add batteries to get the distance.
