As an excellent rechargeable battery, our requirements for it include: high capacity, good charge discharge cycle performance, stable output voltage, safety in use, wide operating temperature range, no pollution to the environment, etc. For lithium iron phosphate battery with LiFePO4 as positive electrode, these performance requirements are good, especially in terms of stable discharge voltage, safety (non combustion, non explosion), life (cycle times), and no pollution to the environment.
Advantage 1
In terms of service life, the charging and discharging cycle life of long-life lead-acid battery is about 300 times, the maximum is 500 times, while the charging and discharging cycle life of 10kwh lithium battery iron phosphate battery can reach more than 2000 times.
Advantage 2
In terms of capacity, lithium iron phosphate batteries do not have memory like nickel metal hydride and nickel cadmium batteries. No matter what state the battery is in, it can be used as soon as it is charged, without first discharging and then charging. In terms of weight, the volume of lithium iron phosphate battery with the same specification and capacity is 2/3 of that of lead-acid battery, and the weight is 1/3 of that of lead-acid battery. Compared with lead-acid battery, lithium iron phosphate lifepo4 10kwh battery is more portable and occupies less area.
Advantage 3
In terms of environmental protection, there is a large amount of lead in lead-acid batteries. If the enterprise does not regulate the production process or does not recycle and dispose properly after waste, it will pollute the environment. The lithium iron phosphate battery generally does not contain any heavy metals and rare metals, is non-toxic, pollution-free, and complies with European RoHS regulations. The battery is pollution-free in both production and use, avoiding the environmental pollution caused by traditional batteries.
Lithium iron phosphate battery has so many advantages, what should be paid attention to in practical application? In terms of application scenarios, both lead-acid batteries and lithium iron phosphate batteries have a wide range of applications, including new energy vehicles, solar energy battery storage, 5G base stations, heavy trucks, etc; Among them, the off grid wind solar complementary power supply system is a big consumption giant. The off grid solar battery systems is not connected to the national grid, so the system needs to be equipped with a movable energy storage module to complete the power storage. The lithium iron phosphate battery is also suitable for the wind solar complementary system because of its long life, large capacity, environmental protection and other advantages. However, most of the off grid wind/solar complementary systems are built in the field, and the temperature in some areas is relatively low sometimes, so the factor of temperature should be considered in the design. The lithium ion battery cannot be at a low temperature, because at a low temperature, the lithium in the battery will deposit to form lithium dendrites, which is easy to pierce the diaphragm and cause internal short circuit of the battery.
Since temperature will have a great impact on lithium iron phosphate battery, we need to control the temperature of lithium iron phosphate battery to improve the efficiency of the battery. How can we control the temperature of lithium iron phosphate battery? The answer is the BMS battery management system, which mainly controls the charging and discharging of the 5kwh home battery and realizes the battery status through the functions of battery terminal voltage measurement, single battery equalizing charging, total battery voltage measurement, total battery current measurement, battery power calculation, battery working status monitoring, real-time data display and data recording analysis, so as to achieve battery status detection Battery status analysis, battery safety protection, energy control management, and battery information management. It can be said that if the battery is compared to a human body, the BMS battery management system is the brain that controls the whole body's operation