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12V LFP battery: The future of energy storage
With the continuous development of technology, 12v LFP battery (12 volt lithium iron phosphate battery) is becoming a popular choice in the market. Known for its high safety, long life and environmentally friendly characteristics, the 12v LFP battery is not only widely used in various electronic devices, but also shows great potential in the field of new energy vehicles, battery energy storage system and other areas.
In this paper, we will discuss the battery advantages of 12v LFP battery, performance characteristics, market applications and so on. By analyzing 12v LFP battery in detail, we will reveal why it has become a leader in the industry and how it has changed the way we live and work.
What is Lithium Iron Phosphate battery?
Lithium iron phosphate battery is lithium ion batteries that use lithium iron phosphate as the cathode material. Such as LiFePO4 battery. Lithium iron phosphate battery has the advantages of high safety, long cycle life, multiplier discharge, high temperature resistance, etc. It is considered as a new generation of lithium battery.
What are the advantages of lithium iron phosphate battery?
Good safety performance
Safety comes from the stability of the cathode material and reliable safety design, lithium iron phosphate battery packs have been rigorous safety testing, even in violent collision will not produce an explosion.
Long cycle life
Lithium iron phosphate battery 1C cycle life is generally up to 2,000 times, or even more than 3,500 times, and for the energy storage market requires more than 4,000-5,000 times, higher than other types of lithium battery
High temperature performance
Lithium iron phosphate batteries can reach 350-500 ℃ peak thermal value, a wide range of operating temperatures (-20 ~ +75 ℃), high temperature (60 ℃) can still release 100% capacity.
Fast charging
Using special charger, 1.5C charging can make the battery full in 40 minutes.
Green and environmental protection
Lithium iron phosphate batteries are green, non-toxic, non-polluting, with a wide range of raw materials and cheap.
What is the voltage and capacity of lithium iron phosphate battery?
Lithium iron phosphate battery voltage
The nominal voltage of single lithium iron phosphate battery is 3.2V, charging voltage is 3.6V, and the discharge cut-off voltage is 2.0V.The lithium iron phosphate battery pack achieves the voltage required by the equipment through the series combination of the battery cells, and the voltage of the battery pack = N*series number. Commonly used lithium iron phosphate battery pack voltages are as follows.
- 12V lithium iron phosphate battery
- 24V lithium iron phosphate battery
- 36V lithium iron phosphate
- 48V lithium iron phosphate battery
Lithium iron phosphate battery capacity
The capacity of lithium iron phosphate battery pack is based on the capacity and number of cores connected in parallel, generally based on the specific requirements of the power equipment, the more lithium iron phosphate cores connected in parallel, the greater the capacity. Common lithium iron phosphate battery packs have a capacity of 10ah, 20ah, 40ah, 50ah, 100ah, 200ah, 400ah and so on.
What is the working principle of 12v LFP battery?
The working principle of lithium iron phosphate battery mainly involves the migration of lithium ions (Li+) during the battery charging and discharging process
Charging process
During charging, lithium ions (Li+) in the positive electrode migrate to the negative electrode through the polymer diaphragm. During this process, Li+ migrates from the surface of the lithium iron phosphate crystals to the inside of the crystals, making the positive electrode positively charged and the negative electrode negatively charged, thus completing the charging process.
Discharge process
During discharge, lithium ions (Li+) from the negative electrode migrate to the positive electrode through the diaphragm. During this migration, Li+ migrates from the negative electrode to the positive electrode, releasing energy to supply external circuits to drive external devices.
What are the performance characteristics of 12v LFP battery?
- When the 12v LFP battery is not in the over-discharge protection state, or when the ultra-low power consumption function is running, it will supply power to the electrical equipment.
- When the DC/DC power output is insufficient or faulty, the 12v LFP battery supplies power to the electrical equipment alone.
- 12v LFP battery can absorb transient overvoltage in the circuit, keep the voltage of automobile electrical system stable and protect the electronic components.
- 12v LFP battery has voltage, current and temperature monitoring function, the abnormal state will trigger the fault alarm function; when 12v LFP battery fault alarm, the vehicle dashboard fault indicator light is always on, and at the same time display “Please check the low voltage 12v LFP battery system”. When the 12v LFP battery fault alarm occurs, the vehicle instrument panel fault indicator lights up and displays “Please check the low voltage 12v LFP battery system”.
- To meet the intelligent charging conditions of the whole vehicle, when the 12v LFP battery power is low, the 12v LFP lithium battery BMS sends an intelligent charging request to the power battery BMS.
- If the power battery power is insufficient or high voltage failure causes intelligent charging can not be carried out, the voltage is reduced to the limit protection value of 11V, it will automatically enter the ultra-low power consumption function to maintain its own power. At this time, you need to press the left front door microswitch to wake up the 12v LFP battery to re-enable the power battery to charge the 12v LFP battery.
What are the application scenarios of 12v LFP battery?
Electric Vehicles: Lithium iron phosphate is one of the main cathode materials for power batteries used in electric vehicles, which has the advantages of long mileage and high power.
Energy storage system: lithium iron phosphate batteries are widely used in the field of electric power storage, and can be used in distributed energy systems such as wind power generation and solar power generation.
Light electric vehicles: including electric locomotives, electric bicycles, recreational vehicles, golf carts and so on. The high energy density and long life of LiFePO4 batteries make these vehicles have longer driving distance and lower maintenance cost.
Small equipment: lithium iron phosphate batteries are also used in a variety of small electronic devices, such as medical equipment (e.g., electric wheelchair vans), toys (e.g., remote-controlled electric airplanes, cars, boats) and so on.
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