Do you know the advantages and disadvantages of lithium iron phosphate batteries?

The advantages of lithium iron phosphate batteries are:

Lithium iron phosphate batteries have a long life and a cycle life of more than 2,000 times. Under the same conditions, lithium iron phosphate batteries can be used for 7 to 8 years.

Use safe. Lithium iron phosphate batteries undergo rigorous safety tests and do not explode even in traffic accidents.

Charge fast. Use a dedicated charger, 1.5 C charging 40 minutes can make the battery full.

Lithium iron phosphate batteries are resistant to high temperatures, and the thermal wind value of lithium iron phosphate batteries can reach 350 to 500 degrees Celsius.

Lithium iron phosphate batteries have a large capacity.

Lithium iron phosphate batteries have no memory effect.

Lithium iron phosphate batteries are green, non-toxic, non-polluting, and have a wide range of raw materials and cheap prices.

The disadvantages of lithium iron phosphate batteries are:

Lithium-iron phosphate batteries have a small vibration density and a density of about 0.8 to 1.3. Large size.

The electrical conductivity is poor, the diffusion speed of lithium ions is slow, and the actual specific capacity is low when the charge and discharge is high.

The low temperature performance of lithium iron phosphate battery is poor.

Lithium-iron phosphate cells have a long life span of about 2,000 times, but lithium iron phosphate batteries have a short life span of about 500 times.

Main Advantages and Disadvantages of Lithium-ion Battery

advantage

Sealed batteries; No maintenance required

Long cycle life

Greater than 1,000 times(lithium iron phosphate battery cycle life greater than 2000 times, 1C charge and discharge 100 % DOD)

Wide operating temperature range

Charging at -20 ~ 60 °C, discharge at -40 ~ 65 °C(lithium iron phosphate battery has excellent high temperature performance and is very suitable for solar energy products. It requires the use of cylindrical 18650 or 26650 steel shells. Soft packaging is easy to excrete gas in a high temperature environment, resulting in a sudden drop in battery life.)

Long storage life

Low self-discharge rate: 2 ~ 8 % / month(annual self-discharge is about 15 %)

Fast charging capability(volumetric core can be charged at 1-2C charging current, which is much more efficient than 0.1-0 .2 C charging of lead-acid batteries, and has many benefits in power and energy storage applications)

High discharge rate and high power discharge capability(the battery has no significant decrease in discharge capacity under the double discharge of 1C-3C, compared to acid battery series and nickel battery)

High capacity and energy efficiency

High quality ratio and high volume ratio

About 159W ? h/kg, about 400W ? h/L

No memory effect

disadvantage

Moderate initial price

Decay at high temperatures

We need to protect the circuits.

When the discharge is below 2V, the battery performance will decay

Over discharge, there will be capacity loss or possible thermal runaway

Battery exhaust occurs when overcharging

When the battery hits and breaks, it will exhaust and may lose heat.

The general output power of cylindrical battery structure is lower than cadmium / nickel or metal hydride / nickel battery

If the lithium-ferric phosphate battery and the ternary lithium-ion battery are compared on power and energy storage and lighting. We take the cylindrical 26650 model as an example. The first is the ability to adapt to high and low temperatures. Lithium iron phosphate has excellent high temperature performance, especially in summer outdoor adaptation. At low latitudes, the temperature at noon will be relatively high. If used outdoors, there is no doubt that lithium iron batteries dominate; However, few products can be eaten at high and low temperatures. The low-temperature performance of iron lithium batteries needs to be improved. The low-temperature performance of three-way lithium ion batteries is much better than that of iron lithium batteries.

Each battery has different advantages. The advantages of lithium iron phosphate batteries mainly include the following:

First, good safety performance

The P-O bond in the lithium iron phosphate crystal is stable and difficult to decompose. Even at high temperatures or overcharges, it will not collapse and heat like lithium cobalt, or form a strong oxidizing substance, so it has good safety.

Second, long life span

Lithium iron phosphate power cells have a cycle life of more than 2,000 times, and standard charging(5 hour rate) can be used up to 2,000 times. Theoretical life will reach 7 to 8 years.

Third, high temperature performance is good

Lithium iron phosphate has an electric peak of 350 °C -500 °C while lithium manganese and lithium cobalt phosphate are only around 200 °C. The operating temperature range is wide(-20C -- +75C), and the thermal peak of lithium iron phosphate with high temperature resistance can reach 350 °C -500 °C.

Fourth, large capacity

Has a larger capacity than ordinary batteries(lead acid, etc.). 5 AH-1000 AH(monomer)

Fifth, no memory effect

Rechargeable batteries work under conditions that are often full and undischarged. The capacity will quickly fall below the rated capacity. This phenomenon is called the memory effect. For example, nickel-metal hydride and nickel-cadmium batteries have memory properties, and lithium iron phosphate batteries do not have this phenomenon. Regardless of the state of the battery, they can be used with charge and do not need to be discharged before charging.

Sixth, light weight

The volume of lithium iron phosphate batteries of the same size is 2/3 of the volume of lead-acid batteries and 1/3 of the weight of lead-acid batteries.

Seventh, environmental protection

The battery is generally considered to be free of any heavy metals and rare metals(nickel-metal hydride batteries require rare metals), non-toxic(SGS certification), pollution-free, in accordance with European RoHS regulations, is an absolute green environmental protection battery certificate.

The page contains the contents of the machine translation.