What are the differences between power lithium batteries and energy storage lithium iron phosphate batteries

In the battery industry, the voltage increases, the corresponding output voltage will also increase, so that the power lithium battery pack can meet some high-power equipment; and the direct effect of the parallel mode is to make the current of the entire battery pack Increase, and the capacity is affected by the current of the output terminal, so the parallel straight purpose is to increase the capacity of the lithium battery pack. The capacity of the battery pack connected in this way tends to be relatively large, which is the so-called capacity type lithium Battery pack. Power lithium batteries are mainly used for energy storage, with large capacity requirements, long life requirements, and low self-discharge. The battery capacity of power tools is not large, and should not provide high-power output; while the energy storage lithium iron phosphate battery is mainly used for power supply and requires high-power output. The products used are different. Some large-scale equipment requires a higher voltage value. Because low-power battery packs can't run with them, power-type lithium battery packs should be used. For example, for the electric bicycles we usually use, the required voltage value is often 48V. Compared with some situations in our lives, 48V is not small. Therefore, power-type lithium battery packs must be used to ensure the operation of electric bicycles. However, we usually go to some large supermarkets or shopping malls, some sign lights and backup power supplies. Because these devices do not consume much power, they generally use capacity-type lithium battery packs. The use of products is different between the two. of. The difference between power lithium ion battery and energy storage lithium iron phosphate battery is first designed for different purposes. Power lithium ion battery is obviously used in electric vehicles, energy storage lithium iron phosphate battery is used in energy storage power station, peak shaving and frequency modulation power auxiliary Service etc. Someone vividly compares the power lithium-ion battery to a generator, and the energy storage battery is equivalent to a converter. Although both power lithium-ion batteries and energy storage batteries belong to the scope of electrochemical applications and have relatively high technical requirements, they are in contrast to different usage scenarios, have different focuses on battery performance, and their performance and design are also different. Power lithium batteries focus more on charging and discharging power and other aspects, requiring fast charging rate, high output power, and vibration resistance, especially emphasizing higher safety and high energy density to achieve long-lasting battery life, as well as lightweight requirements in terms of weight and volume. . From the aspect of battery materials, it is necessary to consider the performance of battery positive and negative materials and the related performance of electrolyte and separator. The energy storage equipment is generally large in scale, the fixed device does not need to be moved, and generally does not require too much weight and volume. The preparation of energy storage lithium iron phosphate batteries emphasizes battery capacity, especially requires operational stability and service life, and more consideration is given to the consistency of battery modules. In terms of battery materials, attention should be paid to the expansion rate and energy density, and the average performance of electrode materials in order to pursue The long life and low cost of the overall energy storage equipment. Secondly, with regard to power lithium batteries, energy storage lithium iron phosphate batteries have higher requirements for service life. The lifespan of new energy vehicles is generally 5-8 years, while the lifespan of energy storage projects is generally expected to be greater than 10 years. The cycle life of power lithium battery is 1000-2000 times, and the cycle life of energy storage lithium iron phosphate battery is generally required to be greater than 3,500 times, and it is hoped that through the development of new operation and maintenance regeneration technology, to achieve ultra-long energy storage life . The price is different, the price of power lithium-ion battery will be more than 1.5 times that of energy storage (according to the different requirements of customers). Energy storage batteries generally have a small current and are energy-based, and power lithium-ion batteries generally need to be able to discharge at 3C. The discharge capacity or discharge curve and platform can be compared by 3C discharge or 1.5C discharge. The price is estimated that the former is 1.2 times that of the latter for the same specifications. 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 article: What are the important components of the thermal management system of the new energy vehicle battery