The main raw material of lithium batteries. There are currently three main lithium iron production processes on the market: ferrous oxalate, iron oxide and iron phosphate processes.
Especially when used in electric vehicles in northern China, lithium iron phosphate batteries cannot provide normal power or the power supply is too low in autumn and winter. winter, and the temperature of the working environment must be adjusted to maintain its performance. . Home solutions to the constant temperature working environment of lithium iron phosphate batteries must consider space constraints. The most common solution is to use airgel felt as an insulation layer.
Long lifespan:
Under 100% DOD conditions, it can be charged and discharged more than 2,000 times.
Reason: Lithium iron phosphate has good lattice stability, and the insertion and extraction of lithium ions has little effect on the lattice, so it has good reversibility . The disadvantage is that the electrode has poor ionic conductivity and is not suitable for charging and discharging large currents, which hinders its application.
The lifespan of lithium iron phosphate batteries is closely related to its operating temperature. If the operating temperature is too low or too high, it will cause great hidden dangers in the processes of charging, discharge and use.
The performance of lithium batteries is better and the capacity of lithium batteries is large, 14,500 is generally equivalent to 800 mAh, 14,500 phosphate lithium iron is generally 600 mAh, plus lithium battery With a rated voltage of 3.6 V, the total discharge energy ist nearly 150% of that of lithium iron phosphate. The voltage is close to 3V, which makes it easier to use. Lithium iron phosphate has good resistance to overcharge and overdischarge and generally does not require a protective plate when used in a single section.
Principle and structure of lithium iron phosphate battery:
1. Commercial lithium iron phosphate battery generally consists of the following parts: positive electrode material (lithium iron phosphate), negative electrode material (graphite), as well as aluminum foil (positive), copper foil (negative) as positive and negative current collectors, and positive and negative electrode tabs (i.e. current collector outputs).
2. There are also separators, electrolytes, aluminum-plastic films and battery protection plates. It adopts winding type and ist transformed into 18650 type battery.
3. The principle is that during discharge, Li ions migrate from the negative electrode to the positive electrode; and during charging, Li ions migrate from the positive electrode to the negative electrode. .