Introduction of lithium iron batteries
Lithium iron battery is a type of battery in the lithium battery family, the cathode material is mainly lithium iron phosphate material - also referred to as lithium-iron batteries. Compared with the traditional lead-acid battery, lithium-ion batteries have obvious advantages in terms of operating voltage, energy density, cycle life, etc.
Advantages of lithium iron batteries for electric vehicles
(1) high energy density: nominal voltage of 3.2V, energy density is about 4 times that of lead-acid batteries, small size and light weight.
(2) strong safety: lithium iron phosphate cathode material has outstanding electrochemical function, charging and discharging channels are very smooth, stable structure during the charging and discharging process, the battery does not burn, does not burst, good safety.
(3) good high temperature function: the external temperature of 55 ℃ when the battery works normally.
(4) high power output: standard discharge of 0.2C, 3C charge and discharge.
(5) long cycle life: 1C charge/discharge at room temperature, the capacity of a single cell is still greater than 80% after 2000 cycles.
(6) environmental protection: the entire production process is clean and non-toxic, all materials are non-toxic.
Electric car lithium iron battery defects
There will be a risk of bursting, when the lithium battery high current charging and discharging, the internal temperature of the battery continues to rise, the activation process occurs in the gas expansion, the internal pressure of the battery increases, the pressure reaches a certain level, such as the shell has a scar, that will rupture, causing leakage, fire, and even bursting.
Electric car lithium battery life how long
I believe that most customers have heard that the life span of lithium batteries is "500 times", 500 times charge and discharge, beyond this number, the battery is "end of life", many friends in order to extend the life of the battery, each time the battery power is completely exhausted In order to extend the life of the battery, many friends every time the battery is completely depleted before charging, so the battery life is really extended role? The answer is no. The life span of lithium battery is "500 times", referring not to the number of charges, but a charge and discharge cycle.
A charge cycle means that all the power of the battery from full to empty, and then from empty to full process, which is not the same as charging once. For example, a lithium battery in the first day only half of the power, and then charge it again slow power. If the next day is still so, that is, with half of the charge, a total of two charging down, which can only be counted as a charging cycle, not two. Therefore, it can often take several charges to complete a cycle. Each time a charge cycle is completed, the battery capacity decreases a little. However, this power less amplitude is very small, high-quality battery charging after several cycles, will still save 80% of the original capacity, many lithium-powered products through two or three years after the still use as usual. Of course, the lithium life expectancy to the end after still need to be replaced.
And the so-called 500 times, refers to the manufacturer in a constant depth of discharge to achieve a chargeable number of about 625 times, reaching 500 charging cycles.
Due to the various effects of real life, especially the depth of discharge when charging is not constant, so "500 charge cycles" can only be used as a reference to the battery life.
The correct way to use the lithium battery of the electric car
1、Charge every day
Even if your electric car lithium battery can be used for 2 to 3 days with one charge, it is still recommended that you charge it every day. Because the lithium battery is in a shallow cycle after use, charging every day will extend the life of the lithium battery.
2、Charge in time
As the lithium battery will enter the sulfation process after discharge, if timely charging, it will be able to clear the sulfation is not serious. Therefore, the lithium battery should be charged as soon as possible after use, so that the battery power is in full condition.
3、Timed deep discharge
Battery regularly a deep discharge is also conducive to "activation" of the battery, can slightly improve the battery capacity. The general method is to discharge the battery thoroughly at regular intervals.
Thoroughly discharge is to ride under normal load conditions on a flat road to the first under-voltage maintenance.
Battery in the first under-voltage maintenance in the future, the battery through a period of time, such as voltage and return to non-under-voltage conditions, when the battery is completely charged, the battery capacity will be improved.
Need to note that the first time the lithium battery under-voltage maintenance, remember not to use the battery, the damage to the lithium battery at this time is great.
4, try to use the original charger
In general, each manufacturer's charger generally has personalized needs, do not replace the charger at will when there is no certainty. In addition, do not remove the speed limit of the controller, after removing the speed limit of the controller, although it can improve the speed of some cars, but will reduce the battery life.
In fact, the correct use of electric car lithium battery, but also with a lot of, I will not repeat here. When you buy an electric car, there will generally be instructions for use. In order for your electric car lithium battery to live a long life, I remind you that you must follow the correct use of electric car lithium battery to fulfill, do not overcharge or over discharge the lithium battery.
Welcome to visit our company website: Lithium VS Lead Acid - Shenzhen Manly Battery Co., Ltd (manlybatteries.com) If you have requests or queries on batteries, please feel free to contact info@manlybattery.com. Thank you.
