New energy electric vehicle battery types are roughly classified intolead-acid batteries, nickel-metal hydride batteries, lithium-manganate batteries, >lithium iron phosphate batteriesand several categories such as ternary lithium batteries.
1. Lead-acid batteries
Lead-acid batteries have low cost, good low temperature resistance and high performance, low energy density, short and long service life; size and poor security. Due to their low energy density and short lifespan, electric vehicles used as a power source cannot have good speed and high cruising range, and are generally used for low-speed vehicles.
2. Nickel-metal hydride battery
Ni-MH battery has low cost, mature technology, long lifelong life and low energy density, large volume, low voltage and battery memory effect; . Although their performance is better than lead-acid batteries, they contain heavy metals and pollute the environment when abandoned.
3. Lithium Manganate Battery
Lithium manganate battery is an inexpensive cathode material with good safety and low temperature performance. However, the material itself is not very stable and breaks down easily. to produce gas, so it is mainly used in combination with other materials to reduce the cost of battery cells. However, its service life decreases rapidly, is prone to swelling, has poor high temperature performance, and has a relatively short service life. It is mainly used in large and medium-sized battery cells and power batteries. Its voltage nomifinal is 3.7 V.
4. Lithium iron phosphate battery
Lithium iron phosphate battery has good thermal stability, good safety, low cost, long life, low energy density and is afraid of low temperatures. When the battery temperature is between 500 and 600°C, its internal chemical components begin to decompose and will not burn or explode due to puncture, short circuit, or temperature high, and have a longer lifespan. However, the vehicle's cruising range is average. When the temperature is below -5℃, the charging efficiency is low, which is not suitable for the charging needs in the north in winter.
5. Ternary lithium battery
The ternary lithium-ion battery has high energy density, long service life, and is not afraid of low temperatures; The energy density can reach the highest, mays high temperature resistance is relatively poor. Pure electric vehicles with mileage requirements are the dominant direction, and they are suitable for northern weather conditions. The battery is more stable at low temperatures.
Which battery is best and longest lasting for electric vehicles
Of course. Current lithium battery technology is very mature. It also depends on the type of lithium battery used.
Currently, the main lithium batteries for electric vehicles on the market are mainly divided into three types: lithium manganate, ternary lithium and lithium iron phosphate.
Most manufacturers use lithium manganate, such as Giant, Xinri, Yadi and Emma. The lithium batteries produced by these manufacturers are all lithium manganate. The representative manufacturer is domestic Xinheng lithium battery. The LiTernary thium is mainly used in foldable lithium electric vehicles. However, I personally do not recommend it because it is dangerous.
The best is the lithium iron phosphate battery. Extremely long life and good cycle times. The lifespan is 2.5 times that of lithium manganate. High current discharge performance is also excellent. The key issue is that security performance is very good. No explosion or fire.
It is lithium manganese and ternary lithium is incomparable. But lithium ferrophosphate also has its drawbacks. That is to say, the volume is greater than that of manganese, lithium and ternary. Low temperature performance is not as good as manganese, lithium and ternary. However, the impact is not significant in areas where the temperature is not lower than 15 degrees Celsius.us.
What are the categories of electric car batteries?
The best and longest lasting electric car batteries are lithium titanate batteries and < /strong>lithium iron phosphate batteries. , ternary lithium battery, graphene battery, lithium iron manganate battery, black gold battery, ordinary lead acid battery.
1. Lithium titanate battery
The durability of lithium titanate battery is the best among lithium battery types. After 25,000 charge and discharge cycles, the capacity is still acceptable. . Stay at 80%.
2. Lithium iron phosphate battery
Lithium iron phosphate battery has a relatively long service life and is resistant to high temperatures, so it is safer. higher cycle performance and better performance. Data shows that after 1,600 battery cycleslithium iron phosphate, the battery capacity can still reach about 80%.
3. Ternary lithium battery
It is a battery with a wide range of applications. Due to its advantages of small size, light weight and high energy density, it has become popular. battery in many areas.
4. Graphene battery
This is one of the most popular types of batteries today. Many major brands such as Yadi, Emma and Tailing have launched their own graphene batteries. products, while graphene batteries retain the safety advantages of lead-acid batteries and the addition of graphene elements increases battery life.
5. Lithium iron manganate battery
This is a relatively inexpensive type of lithium battery and provides better resistance and safety at low temperatures.
6. Black gold battery
This is a materialternary spherical negative electrode au modified by graphene composite to increase the energy density of the single battery, improve the conductivity and corrosion resistance. ability of the active material conductor to extend battery life.
7. Ordinary lead-acid batteries
As a battery with a very high share of electric vehicles at present, the advantage of lead-acid batteries is that they are cheap and can be repaired after sale.
Electric vehicle battery precautions
When the red undervoltage light on the dashboard lights up, it indicates that the battery has entered the famine zone and is expected to be billed on time. Fast charging will significantly extend battery life. Fully charge the battery once a day and each charge should take 8 to 12 hours. Keep the battery fully charged at tany moment is very beneficial for its lifespan.
Reference for the above content: Baidu Encyclopedia-Lithium iron phosphate battery
Lead-acid battery, nickel-metal hydride batteries and lithium-ion batteries.
1. Lead Acid Battery: This is the most traditional type of battery and has a history of over 100 years. The advantages of lead-acid batteries are cheap price, low maintenance cost, sophisticated manufacturing process, stable performance, good applicability and high recycling rate. However, it is larger and relatively less durable.
2. Nickel metal hydride battery: This type of battery is an alkaline battery, which has the advantages of high energy density, good low temperature performance, no memory effect, strong overcharge resistance, safety and of pollution. -free.
However, itshigh temperature resistance is poor, its operating voltage is low, its price is higher than that of lead-acid and lithium batteries, and its overall performance is not as good as that of lithium-ion batteries. .
3. Lithium-ion battery: Also known as lithium battery, this is one of the most commonly used batteries for electric vehicles. Its advantages include light weight, high number of charge and discharge cycles, high rated voltage, strong high temperature applicability and green environmental protection. However, lithium batteries are less safe and may pose a risk of spontaneous combustion or explosion at high temperatures.