Low temperature will cause the activity of lithium batteries to decrease, the reaction speed to slow down, and the conductivity of the electrolyte to deteriorate. These are the reasons for the decline in performance of lithium batteries.
Lithium batteries are widely used in our daily lives. Mobile phones, tablets, laptops, etc., we all generally use lithium batteries.
The pure electric cars we drive and the pure electric buses we see on the road also use lithium batteries.
General domestic pure electric vehicles will use ternary lithium batteries. The positive electrode of this lithium battery is made of ternary materials. The positive electrodes of some ternary lithium batteries are made of nickel, cobalt and aluminum. the positive electrode of certainTernary lithium batteries are composed of nickel, cobalt and manganese.
The advantages of ternary lithium batteries are high energy density, light weight and good low temperature performance.
The disadvantage of ternary lithium batteries is that they are not very safe. This type of battery starts to burn at 200 degrees Celsius, and if this type of battery is not recycled after being discarded, it will also result in combustion. great environmental pollution.
Pure electric buses generally use lithium iron phosphate batteries, and the positive electrode of this battery is made of iron phosphate.
The advantage of lithium iron phosphate batteries is that they are relatively safe. This battery will only burn at 800 degrees Celsius.
The disadvantages of lithium iron phosphate batteries are relatively low energy density, poor performance at lowtemperature and relatively high weight.
Many car manufacturers are trying to improve the safety of ternary lithium batteries.
Why don't lithium batteries last in winter?
Hello, the most essential difference is the operating temperature.
The working temperature of ordinary lithium batteries is generally around 0 to 45 degrees, and the storage temperature range is a little wider.
But ultra-low temperature lithium batteries are different. They have no problem operating more than 30 degrees below zero. The higher the subzero temperature, the more stable the lithium battery is at low temperatures.
I hope this helps you.
The reasons why lithium batteries are not durable in winter are:
1. In low temperature environments, the screwcosity of the electrolyte. increases and even partially solidifies, leading to a decrease in the conductivity of lithium-ion batteries.
2. The compatibility between the electrolyte, negative electrode and separator deteriorates in low temperature environments.
3. Lithium is seriously precipitated from the negative electrode of lithium-ion batteries in low temperature environments, and the precipitated lithium metal reacts with the electrolyte, and the deposition of the product causes the thickness of the lithium to increase. solid electrolyte interface (SEI).
4. In low temperature environments, the diffusion system within the active material of lithium-ion batteries decreases and the resistance to charge transfer (Rct) increases significantly.
Lithium battery usage instructions:
1. Keeping lithium-ion batteries properly charged and discharged can extend the life of the battery.battery life. Keeping the lithium-ion battery power between 10% and 90% is beneficial to protect the battery. This means that giving the phoneWhen charging the batteries of digital products such as laptops and notebooks, it is not necessary to reach the maximum value.
2. If digital products equipped with lithium-ion batteries are exposed to sunlight or stored in hot cars, it is better to turn off these products because if the operating temperature exceeds 60 degrees Celsius, the lithium-ion battery will accelerate aging .
3. If the cell phone battery needs to be charged every day, the reason may be that the battery is defective or that it needs to be "retired" for laptop owners, if it is plugged in for a long time . time, it is best to remove it. Remove the battery (high heatee generated by the computer during use is not good for the laptop battery).