Under what circumstances we will choose lithium iron phosphate battery

When we design a battery for an electronic device, there are many factors to consider, especially in some equipment that affects the life of the operator. Designers have a number of considerations in terms of battery chemistry, size, power consumption, cost and safety. Our primary goal is to consider the needs of the user, based on these choices within acceptable cost ranges and to ensure battery performance requirements. It is a qualified manufacturing process.

Conventional lithium ion batteries are made of a transition metal material such as lithium-cobalt oxide or lithium nickel cobalt aluminum oxide. A lithium iron phosphate (LiFePO4) battery uses a lithium iron phosphate material as a positive electrode to charge a rechargeable lithium ion battery. This low-cost mineral provides excellent thermal stability through natural chemical reactions, fast charging time and long cycle life, but it has some energy loss because its operating voltage is lower than the standard lithium ion element. The first lithium iron phosphate material used in the production of lithium-ion batteries was invented in 1997 by Dr. Goodro and has applied for its patent. Lithium iron phosphate has been studied for various applications, including grid stabilization, power tools, and hybrid power. Electric vehicles, lasers, naval combat aircraft and helicopters. The disadvantages and advantages of using lithium iron phosphate instead of the standard lithium ion (metal oxide cathode material) are clearly defined. How do you make a choice for the application? It all comes down to what kind of performance, security and cost you want to achieve.

Like the trade-offs of anything else, iron phosphate chemistry has its unique advantages when compared to traditional lithium-ion metal oxides, such as lighter weight and lighter energy in relative volumes, stable chemical properties in high-temperature environments, and storage. Safe (better than lead acid, nickel cadmium or nickel hydride), but performs poorly at low temperatures. Interestingly, the flat voltage performance curve of iron phosphate is both an advantage and a disadvantage for designers. On the positive side, the cell provides a stable source of energy transmission, with more than 80% of national supervisory (SOC) and full charge and discharge effects on its performance is minimal. If in a low voltage environment, this energy can be maximized and effectively utilized, but since the SOC index of the battery voltage has energy remaining in the lithium ion metal oxide, if a controllable lithium iron phosphate battery is provided, this circuit will undoubtedly A lot more complicated.

Although the iron phosphate technology has some obvious shortcomings that scientists have thrown at it for research and development to overcome or avoid these defects, some battery manufacturers have developed energy replay standards for lithium iron phosphate technology, improving its usage efficiency. For example, superphosphate is a patent that Saft is applying for, based on the safety, power and capacity of iron phosphate chemicals. The iron phosphate electrode contains the same core of saft's standard lithium ion chemistry using lithium nickel cobalt aluminum oxide, so for most applications, super-phosphate can be converted to and from conventional lithium ion or lithium-iron phosphate systems. of.

Super-phosphoric acid iron salt technology has reliable safety, long cycle life, longer service life and a wider operating temperature range, including superior low temperature performance compared to standard lithium iron phosphate batteries. In addition, the battery has high performance against abuse and can be safely and stably reflowed under floating voltage conditions.