What factors affect the charging speed of power lithium batteries?

What are the factors that affect the charging speed of power lithium batteries? 1. Determined by the electrode material used in the power lithium battery itself: As far as the factors affecting the charging speed of the power lithium battery are concerned, the materials used in the power lithium battery itself have played a vital purpose. When charging, lithium ions have to accelerate and instantaneously intercalate into the negative electrode, which poses a great challenge to the ability of the negative electrode of a power lithium battery to quickly receive lithium ions. Therefore, if you want to increase the charging speed of power lithium batteries, the application of battery electrode materials has become the key. Power lithium batteries have a higher charging rate, which means that the electrode material is more active, and daily use, especially during the charging process, may bring more instability and greater heat generation. Therefore, improving the electrode material to increase the charging rate will lead to a linear increase in the cost of power lithium batteries. 2. Determined by the charging power of the charging pile: Since charging is an interaction between a charging pile and an electric vehicle, the charging pile will also affect the charging speed. Due to the charging piles of different operators, the charging power that can be output is also different. When the power lithium battery is compatible, higher charging power can directly affect the charging speed. For example, Porsche recently announced the 800V ultra-fast charging technology, which can obtain 400 kilometers of cruising range in 20 minutes of charging time, and the important reason for its fast charging speed is that it uses a higher speed charging system than the current fast charging system. Double the charging power. However, higher-power charging piles will consume a large amount of grid resources in a short time, and large-area applications will also cause a huge load on the grid. 3. Determined by the temperature of the power lithium battery: the charging and discharging of the power lithium battery is essentially a reversible chemical reaction, and the chemical reaction will show different reaction speeds under different environmental temperatures. When the power lithium battery is lower than the ideal use temperature, the low temperature will reduce the activity of the electrode, resulting in a decrease in the charging speed; when it is higher than the power lithium battery use temperature, the electrode will be too active and cause many unstable factors, and there are certain risks. At present, there are already some electric vehicles on the market with power lithium battery heating and cooling systems, which can ensure a stable charging speed in low or high temperature environments. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the technical parameters of the lithium battery protection board?