The Brief Introduction Of Lithium Battery

The Brief Introduction Of Lithium Battery

Date:Nov 20, 2018

Lithium battery advantages

1. Lithium battery light weight Small lithium battery Electric car is currently diversified in brand. It is similar to lead-acid battery in terms of power performance. It can be charged for 6~8 hours. It can run 30~45km depending on battery capacity. The weight is only lead-acid battery. 1/5 or so, and currently the general lithium battery is guaranteed for 2 years, and the lead-acid battery is guaranteed for 1 year.

2, lithium battery has no activation characteristics Lithium battery is easy to activate, as long as 3-5 times the normal charge and discharge cycle can activate the battery, restore normal capacity. Due to the characteristics of the lithium battery itself, it is determined that it has almost no memory effect. Therefore, the user's new lithium battery does not require special methods and equipment during the activation process.

3, lithium battery with memory effect In the lead-acid battery, nickel battery charging, has been worried about the battery memory effect, and electric bicycle lithium battery without memory effect, you can rest assured that you do not have to worry about the battery before charging.

4, lithium battery cycle life is long Lithium-ion battery charge and discharge at 1C rate, its cycle life is greater than or equal to 500 times, the capacity of the 500th time, greater than 70% of the nominal copper beam. The lead-acid battery, even if it is discharged at 0.5, is charged at 0.15 C, and its cycle life is 350 or less, and the capacity is 60% or less.

5, wide operating temperature range Electric bicycle lithium-ion battery can work in the range of -25 degrees to 55 degrees, its capacity can reach 70% of the nominal capacity, and lead-acid batteries can only work in the range of 10 to 40 degrees, It does not work properly at -25 degrees.

6, lithium battery charging time is short, green and environmentally friendly Because the electric bicycle lithium-ion battery has the characteristics of high current charging, so the charging time is only 4-5 hours, while the lead-acid battery takes 8 to 10 hours. There is no heavy metal lead harmful to the environment, which is a highly environmentally friendly product.

Lithium battery selection points

1. The battery below the average wholesale price of the market is determined not to buy.

2. Products that have not passed the market test for more than 2 years.

3. There is no battery for electric vehicle manufacturers to buy.

4, high-priced batteries, if not produced by large factories, resolutely do not buy.

5, change the national standard size of the battery is determined not to buy.

6, 5A discharge, 30 seconds when the voltage is higher than 12.68V, do not buy, more than 90% are short-lived batteries.

Electric vehicle lithium battery life

How long does it take: How many years can an electric car lithium battery last? I believe that most consumers have heard that the life of lithium batteries is "500 times" and 500 times of charge and discharge. More than this number of times, the battery will be "dying down". Many friends are trying to extend the life of the battery every time. Charging when the battery is completely exhausted, does this really extend the life of the battery? the answer is negative. The life of a lithium battery is "500 times", which means not the number of times of charging, but a period of charging and discharging.

A charge cycle means that all of the battery's charge is from full to empty, and then from empty to full, which is not the same as charging. For example, a lithium battery used only half of the power on the first day, and then charged it slowly. If it is still the next day, it will be charged in half, and it will be charged twice in total. This can only be counted as one charging cycle, not two. Therefore, it is usually possible to complete a cycle after several charges. The battery capacity is reduced a little every time a charge cycle is completed.

However, this amount of power is very small, and high-quality batteries will retain 80% of the original capacity after many cycles. Many lithium-powered products will still be used after two or three years. Of course, the lithium battery life needs to be replaced after the end. The so-called 500 times means that the manufacturer has achieved 625 times of chargeable times at a constant depth of discharge, reaching 500 charge cycles. Due to the various effects of real life, especially the depth of discharge during charging is not constant, the "500 charging cycles" can only be used as a reference battery life.

Misunderstanding: We often have "the lithium battery is exhausted and then recharged" or "the lithium battery is full and then continue to flush, must be charged for 12 hours" misunderstanding. As everyone knows, if you overcharge or over-discharge the lithium battery, you will not be able to extend the life of the lithium battery of the electric vehicle, but will shorten it. So how do you use lithium batteries correctly?

How to use lithium battery correctly

1, charging every day

Even if your electric car lithium battery can be used for 2 to 3 days with a single charge, it is recommended that you charge it every day. Because the lithium battery after use is in a shallow cycle state, charging every day will prolong the life of the lithium battery of the electric vehicle.

2, timely charging

Because the lithium battery will enter the vulcanization process after discharge, if it is charged in time, it can remove the less severe vulcanization. Therefore, the lithium battery should be charged as soon as possible after use, so that the battery is fully charged.

3, regular deep discharge

Regular periodic discharge of the battery also facilitates "activation" of the battery, which can slightly increase the capacity of the battery. The general method is to periodically discharge the battery completely.

4, try to use the original charger

Generally, do not change the charger at will when you are not sure. In addition, do not remove the controller's speed limit, remove the controller's speed limit, although it can improve the speed of some cars, but will reduce the battery life.

5, lithium battery storage

When the battery is not used for a long time, disconnect the battery from the vehicle, and add some power to the battery at intervals to avoid self-discharge of the battery or the power consumption of the protection board.

Tips for using electric cars

First of all, in terms of charging, it is often not fully charged, and the battery will produce a kind of "memory", which will affect its mileage and also deplete battery life. Plug in the battery plug first, then plug in the power plug. When charging is complete, first pull the power plug and then pull the battery plug.

Secondly, start the electric vehicle to avoid large current discharge and reduce the manned driving. It is best to carry out or assist the riding when climbing the slope, otherwise the damage to the battery is very large. If the vehicle is not used for a few weeks in the open air or cold storage, the battery should be removed and stored in a warmer room to prevent the battery from freezing. When the temperature is too low, the use time of the electric vehicle should be shortened as much as possible, and charging should be performed in time. If you are not going to use the battery car in the winter, the battery should not be recharged until the year of use. Instead, the battery should be charged once every 1 month to ensure the storage capacity of the lead-acid battery, while avoiding acid spillage. battery. Maintenance personnel said that to maintain the battery, remember to charge and help.

After using for half a year, it is best to do a battery maintenance at the maintenance point, properly replenish the battery's electrolyte, adjust the specific gravity of the electrolyte, check the storage condition, maintain the specific gravity of the battery electrolyte, and increase the number of times of charge if necessary. At the same time, it is important to clean the battery terminals and apply special grease to protect them. This ensures reliable and long battery life.

In fact, the correct use of electric vehicles lithium batteries, and a lot, Xiaobian is not here. When you buy an electric car, there are usually instructions for use. For your electric car lithium battery can live longer, Xiaobian reminds you that you must follow the correct use of electric vehicle lithium battery, do not overcharge or over discharge lithium battery.


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