What is the difference between lithium iron phosphate battery and ternary lithium battery protection board

Lithium iron phosphate battery protection board: Lithium iron phosphate battery.jpg The voltage of lithium iron phosphate battery is 3.2V, and it is generally used as power source for electric vehicles. Lithium iron phosphate batteries for electric vehicles are composed of many single cells in series or in parallel to achieve different voltage and capacity levels. Due to the discrete nature of lithium batteries, after a period of use, the voltage of each battery will become more and more different. Some are higher than 3.2V and some are lower than 3.2V. This has a great impact on the entire lithium battery pack, and the overall capacity changes. Small and shortened life span. Lithium iron phosphate battery pack protection board is necessary and useful. The protection board circuit can separately test the voltage and current of each battery in the series-connected lithium battery pack, and control the charging and discharging process of the battery pack. The voltage of each battery in the lithium iron phosphate battery is between the overcharge test voltage and the overdischarge test voltage, and when the output is not short-circuited, the MOS tube is turned on, P+, P- output the battery pack voltage, and the lithium battery pack is allowed to perform Charge and discharge operations. In addition, the lithium battery protection board also has functions such as battery pack over-discharge protection, over-charge protection, over-current protection, and short-circuit protection. Ternary lithium battery protection board: Ternary lithium battery.jpg Ternary polymer lithium battery refers to a lithium battery that uses lithium nickel cobalt manganese or lithium nickel cobalt aluminate as the positive electrode material. There are many positive materials for lithium batteries. The most important ones are lithium cobaltate, lithium manganate, lithium nickelate, ternary materials, lithium iron phosphate and so on. At present, the lithium battery of ternary material has replaced the widely used lithium cobalt oxide battery and is widely used in the field of notebook batteries. A material that is relatively balanced in terms of capacity and safety has better cycle performance than normal lithium cobalt oxide. In the early stage, due to technical reasons, its nominal voltage was only 3.5-3.6V, and its use range was limited. But up to now, with the formulation of With continuous improvement and perfect structure, the nominal voltage of the ternary lithium battery has reached 3.7V, and its capacity has reached or exceeded the level of lithium cobalt oxide batteries. Because of its high energy density, the ternary lithium battery makes it difficult to ensure the safety of the battery. In detail, in the overcharge state, the electrolyte will be analyzed, causing the temperature and pressure inside the lithium battery to rise; in the overdischarge state, the electrolytic material copper in the negative electrode will melt and cause an internal short circuit, which will increase the temperature: Due to the characteristics of internal resistance, the internal power consumption of the battery will increase, and the temperature will also rise, which may cause the oxidation or analysis of the electrolyte and shorten the life of the lithium battery. 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: Comparison of Hydrogen Fuel Power Battery and Lithium Battery