
Lithium iron phosphate battery is a lithium-ion battery that uses lithium
iron phosphate (LiFePO4) as the positive electrode material and carbon as the
negative electrode material. The rated voltage of the monomer is 3.2V, and the
charging cut-off voltage is 3.6V-3.65V. During the charging process, some
lithium ions in lithium iron phosphate are removed and transferred to the
negative electrode through the electrolyte, which is embedded in the negative
electrode carbon material; At the same time, electrons are released from the
positive electrode and reach the negative electrode from the external circuit,
maintaining the balance of chemical reactions. During the discharge process,
lithium ions detach from the negative electrode and reach the positive electrode
through the electrolyte. At the same time, the negative electrode releases
electrons, which reach the positive electrode from the external circuit and
provide energy to the outside world.
Lithium iron phosphate batteries have the advantages of high working
voltage, high energy density, long cycle life, good safety performance, low self
discharge rate, and no memory effect.
1. Lithium iron phosphate battery voltage
The nominal voltage of a single lithium iron phosphate battery is 3.2V, the
charging voltage is 3.6V, and the discharge cut-off voltage is 2.0V. The lithium
iron phosphate battery pack achieves the required voltage for the equipment
through the series combination of battery cells, and the battery pack voltage is
N * the number of series connections. There are several commonly used voltages
for lithium iron phosphate battery packs:
12V lithium iron phosphate battery
24V lithium iron phosphate battery
36V lithium iron phosphate battery
48V lithium iron phosphate battery
2. Lithium iron phosphate battery capacity
The capacity of a lithium iron phosphate battery pack is determined based
on the capacity and number of battery cells connected in parallel, usually
according to the specific requirements of the electrical equipment. The more
lithium iron phosphate cells are connected in parallel, the greater the
capacity. Common lithium iron phosphate battery packs have capacities of 10ah,
20ah, 40ah, 50ah, 100ah, 200ah, 400ah, etc.
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