Lithium iron phosphate batteryOkay, lithium ion batteries and lithium iron phosphate batteries have their own advantages and disadvantages. Technology is neither good nor bad, only suitable or not. appropriate. It is best to choose the lithium battery that suits you.
Lithium iron phosphate battery.
The so-called lithium iron phosphate battery refers to a lithium-ion battery using lithium iron phosphate as the positive electrode material. The particularity of this type of battery is that it does not contain precious metal elements (such as cobalt, etc.).
In actual use, lithium iron phosphate batteries have the advantages of high temperature resistance, high safety and stability, low price and better cycle performance . Raw material prices are low and land resources of phosphorus and iron are abundant.ntes, there will therefore be no supply problems.
The advantages of lithium iron phosphate batteries are that they are safe to use.
The PO bond in the lithium iron phosphate battery crystal is stable and not easy to decompose. Even at high temperatures or overload, the structure will not collapse and heat up, nor will it form strong oxidizing substances like lithium cobalt oxide. has good security.
Lithium iron phosphate batteries have undergone strict safety testing and will not explode even in the event of a collision or puncture.
With the improvement of service life, the service life of lithium iron phosphate batteries reaches more than 2,000 times. With a standard charge (5 hour rate), it can reach 2000 times.
Lead-acid batteries of the same quality only last 1 to 1.5 years at most, while lithium iron phosphate batteries have a lifespan of teaoric 7 to 8 years when used under the same conditions.
High temperature performance is good. The thermal peak of lithium iron phosphate battery can reach 350℃-500℃, while lithium manganate and lithium cobalt oxide are only about 200℃. It has a wide operating temperature range (-20°C to 75°C) and features high temperature resistance.
With large capacity, if the battery is often fully charged and not fully discharged, the capacity will quickly drop below the rated capacity. This phenomenon is called memory effect.
Ni-MH and nickel-cadmium batteries have memory, but lithium iron phosphate batteries do not exhibit this phenomenon. No matter what state the battery is in, it can be charged and used anytime, and there. there is no need to discharge it first and then recharge it.
Lightweight, thelume of a lithium iron phosphate battery with the same specifications and capacity is 2/3 that of a lead-acid battery, and its weight is 1/3 that of a lead-acid battery. battery.
Environmentally friendly, lithium iron phosphate batteries do not pollute, comply with European RoHS regulations and are certified as absolutely green and environmentally friendly batteries.
Fast charging, it can quickly charge and discharge at a high current of 2C. The battery can be fully charged in 40 minutes with a special charger at 1.5C, and the starting current can reach 2C.
Disadvantages of lithium iron phosphate batteries:
1. The plug density of the positive electrode of lithium iron phosphate batteries is low, and the density is generally around 0.8 to 1.3. Big size.
2. The conductivity is poor, the lithium ion diffusion speed is slow, and the capacityActual specific is low when charging and discharging at high times.
3. Lithium iron phosphate batteries have poor performance at low temperatures.
4. The life of a single battery of lithium iron phosphate battery is long, about 2,000 times, but the life of a lithium iron phosphate battery is about 2,000 times.The life of a lithium iron oxide battery is short, generally about 500 times.
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 of lithium iron phosphate is generally 600 mAh, plus lithium battery With a rated voltage of 3.6V, the total discharge energy is 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 strengthto overcharge and overdischarge and generally does not require a protective plate when used in a single section.
Lithium iron phosphate batteryPrinciple and structure:
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. leads from the current collector).
2. There are also separators, electrolytes, aluminum-plastic films and battery protection plates. It adopts winding type and is made into 18650 type battery.
3. The principle is that during discharge, Li ions migrate from the negative electrode to the po electrode.sitive; and during charging, Li ions migrate from the positive electrode to the negative electrode. .