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Introduction to Lithium Iron Phosphate Battery

Lithium iron phosphate battery refers to a lithium-ion battery that uses lithium iron phosphate as the positive electrode material. The positive electrode materials of lithium-ion batteries mainly include lithium cobalt oxide, lithium manganese oxide, lithium nickel oxide, ternary materials, lithium iron phosphate, etc. Lithium cobalt oxide is currently the majority of positive electrode materials used in lithium-ion batteries.

Advantages of lithium iron phosphate batteries

1. Lithium iron phosphate batteries have a long lifespan, with a cycle life of over 2000 times. Under the same conditions, lithium iron phosphate batteries can be used for 7 to 8 years.

2. Use safely. Lithium iron phosphate batteries undergo strict safety testing and will not explode even in traffic accidents.

3. Fast charging. Using a dedicated charger, the battery can be fully charged after 40 minutes of charging at 1.5C.

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

5. Lithium iron phosphate batteries have a large capacity.

6. Lithium iron phosphate batteries have no memory effect.

7. Lithium iron phosphate batteries are environmentally friendly, non-toxic, pollution-free, with a wide range of raw material sources and affordable prices.

Disadvantages of lithium iron phosphate batteries

1. The tap density of the positive electrode of lithium iron phosphate batteries is small, generally around 0.8 to 1.3. Large volume.

2. Poor conductivity, slow lithium ion diffusion rate, and low actual specific capacity during high magnification charging and discharging.

3. The low-temperature performance of lithium iron phosphate batteries is poor.

4. The lifespan of a single lithium iron phosphate battery is long, around 2000 cycles, but the lifespan of a lithium iron phosphate battery pack is short, generally around 500 cycles.

Application areas of lithium iron phosphate batteries

Large electric vehicles: buses, electric vehicles, sightseeing buses, and hybrid vehicles, etc;

Light electric vehicles: electric bicycles, golf carts, small flatbed electric scooters, forklifts, cleaning vehicles, electric wheelchairs, etc;

Electric tools: drills, chainsaws, lawn mowers, etc;

Remote controlled toys such as cars, boats, airplanes, etc;

Energy storage equipment for solar and wind power generation;

Ups and emergency lights, warning lights, and mining lights (with the best safety);

Replace the 3V disposable lithium battery and 9V nickel cadmium or nickel hydrogen rechargeable battery in the camera (with identical size);

Small medical equipment and portable devices, etc.

Introduction to lithium batteries

Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very high environmental standards. So, lithium batteries have not been applied for a long time. With the development of science and technology, lithium batteries have now become mainstream.

Advantages of lithium batteries

1. The energy is relatively high. It has a high energy storage density, reaching 460-600Wh/kg, which is about 6-7 times that of lead-acid batteries;

2. Long service life, with a service life of over 6 years. The battery with lithium iron phosphate as the positive electrode can be charged and discharged at 1C (100% DOD) with a record of 10000 uses;

3. The rated voltage is high (with a single working voltage of 3.7V or 3.2V), which is approximately equal to the series voltage of three nickel cadmium or nickel hydrogen rechargeable batteries, making it easy to form a battery power pack; Lithium batteries can be adjusted to 3.0V through a new type of lithium battery voltage regulator technology to be suitable for small electrical appliances;

4. Capable of withstanding high power, the lithium iron phosphate lithium-ion battery used in electric vehicles can achieve a charge and discharge capacity of 15-30 ° C, facilitating high-intensity acceleration during start-up;

5. The self discharge rate is very low, which is one of the most prominent advantages of this battery. It can generally achieve less than 1% per month, which is less than 1/20 of nickel hydrogen batteries;

6. Lightweight, with a weight of about 1/6-1/5 of lead-acid products under the same volume;

7. Strong adaptability to high and low temperatures, it can be used in environments ranging from -20 ℃ to 60 ℃. After processing, it can be used in environments ranging from -45 ℃;

8. Green and environmentally friendly, regardless of production, use, or disposal, it does not contain or produce any toxic or harmful heavy metal elements or substances such as lead, mercury, cadmium, etc.

9. Production basically does not consume water, which is very advantageous for our water scarce country. Specific energy refers to the energy per unit weight or unit volume. Specific energy is expressed in Wh/kg or Wh/L. Wh is the unit of energy, W is watts, and h is hours; Kg is kilogram (weight unit), L is liter (volume unit).

Disadvantages of lithium batteries

1. Lithium primary batteries have poor safety and the risk of explosion.

2. Lithium ion batteries with lithium cobalt oxide cannot discharge at high currents, are expensive, and have poor safety.

3. Lithium ion batteries require circuit protection to prevent overcharging and overdischarging of the battery.

4. High production requirements and high costs.

5. The usage conditions are limited, and there is a high risk of high and low temperature use.

Application areas of lithium batteries

1、 Traffic power supply

2、 Electric energy storage power source

3、 Mobile communication power supply

4、 New energy storage power electricity

5、 Aerospace special power supply

The difference between lithium iron phosphate batteries and lithium batteries

Lithium iron phosphate batteries and lithium batteries are different.

1. Lithium iron phosphate batteries are used to make lithium-ion secondary batteries, and currently the main direction is power batteries, which have significant advantages over NI-H and Ni Cd batteries.

2. Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive electrode material and a non-aqueous electrolyte solution. The chemical properties of lithium metal are very active, making the processing, storage, and use of lithium metal highly environmentally demanding.

3. Lithium iron phosphate puncture does not ignite or explode, while lithium batteries do.

4. Lithium iron phosphate can withstand overcharging up to 100% without catching fire or exploding; Lithium batteries will release gas and swell when they reach the specified value.

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