What are the reasons for the decline of lithium battery packs for new energy vehicles?

New energy vehicles drive on the road and have to go through countless times of charging and discharging. Therefore, there are many reasons that affect the deterioration of the battery. The charging and discharging voltage, including the sufficient power of the battery and the external temperature, will affect the battery. As the power source device of a new energy vehicle, the power lithium battery pack is related to the cruising range of the vehicle. However, in the actual use process, due to various factors, the lithium battery will decline. This is like Our electronic products are the same. After a long time of use, you will find that Xinnong is not as good as it used to be, and the power is not as good as it used to be. Speaking of the reason for the decline of lithium battery packs, we must first look at the working condition of the lithium battery. When the lithium battery pack is repeatedly charged and discharged, the motor inside the battery will cause crystals in the battery body material electrodes, causing the internal conductivity of the battery to decrease, that is, the activity of lithium ions decreases, which will lead to its resistance. The new value will eventually affect the attenuation of battery capacity. Lithium batteries mainly convert chemical energy into electrical energy through the oxidation reaction of internal electrodes. The internal structure of lithium batteries is composed of the positive and negative materials of the battery and the electrolyte. When the battery is repeatedly charged and discharged, the motor inside the battery will Crystals will appear in the battery body material electrodes, which will cause the internal conductivity of the battery to decrease, that is, the activity of lithium ions will decrease, which will cause its resistance to increase, and finally affect the attenuation of the battery capacity. In fact, from From the actual environment, it affects the degradation of lithium battery packs of new energy vehicles, and there are charging and discharging voltages, and even the charging and discharging power of the battery and the temperature of the environment. At present, new energy vehicle batteries use ternary lithium battery packs, so the biggest point about ternary lithium batteries is that they are afraid of the high temperature of the environment, which will affect their service life, and different driving conditions Using different charge-discharge rates, the greater the charge-discharge rate, the faster the battery capacity decays. In fact, it is also important because of the change in the structure and properties of the material. At present, lithium iron phosphate batteries and ternary lithium battery packs are urgently used in new energy vehicle batteries. Various factors affecting the life of power lithium-ion battery packs also affect each other. The decline of lithium battery packs for new energy vehicles is currently There is no way to guard. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: Briefly describe the reason why BYD has attached great importance to lithium iron phosphate batteries