Using electric vehicles for short-distance transportation is the choice of hundreds of millions of people. Although electric vehicles are not as good as other means of transportation in many aspects such as speed and battery life, their high cost performance is obvious to all and

uses electric vehicles for short-distance transportation. This is the choice of hundreds of millions of people. Although electric vehicles are not as good as other means of transportation in many aspects such as speed and battery life, their high cost performance is obvious to all. They do not need to borrow money or are too big. Without the pressure, you can have your own private transportation.

As an electric vehicle, its core is "electricity", and what provides "power retention" and "energy conversion" is the battery of the electric vehicle. A good battery not only affects the life of the electric vehicle, but also affects the battery life, Durability, vehicle price and many other aspects, then, the little expert will share with you some useful information about electric vehicle batteries.

"Lithium batteries" and " lead-acid batteries" are the mainstream battery types currently used in electric vehicles.

As a relatively cheap means of transportation, the batteries they carry are not as high-end as car batteries. There are "blade batteries, lithium iron phosphate batteries". Most electric vehicles are equipped with lead-acid batteries. In recent years, with the increasing demand for mid-to-high-end electric vehicles, coupled with the new Due to the national standard's vehicle weight limit, lithium batteries have been widely used.

At present, the general situation of batteries installed in electric vehicles is that low-end electric vehicles are mostly lead-acid batteries, while electric vehicles with a range of more than 80 kilometers and a price of more than 5,000 yuan are basically equipped with lithium batteries. Comparison of the division of labor between the two It is clear that lead-acid batteries and lithium batteries have jointly become the mainstream battery types used in electric vehicles.

In the minds of many people, there is a question, that is, whether they are batteries, "lithium batteries" or "lead-acid batteries" for electric vehicles, which one has a longer lifespan? How long will it last? Regarding this issue, the little expert will discuss it with you.

Before knowing how long the life is, let’s first understand what “charge and discharge” is.

How to measure the life of a battery? The industry uses its “number of charges and discharges” to measure its durability, and many car owners "Charging and discharging" is understood to mean each time it is charged or used. For example, if the battery of an electric vehicle is "charged and discharged" 100 times, it means that it can be charged or ridden 100 times.

Actually, this understanding is a misunderstanding. "Charging and discharging" actually refers to the process from full charge to depletion of the battery. One process is actually one time. For example, if the battery reaches 100% and can travel 50 kilometers, then, that is When it is fully charged and has run 50 kilometers, it is actually "charged and discharged" once. However, if it is charged after just 25 kilometers, it is actually only used 0.5 times. Two charges can be accumulated into one "charged and discharged".

How many times are "lithium batteries" and "lead-acid batteries" charged and discharged? It is clear at a glance which one has a longer life.

The above explains in detail what "charge and discharge" is, and we can judge based on this standard. , "lithium battery" or "lead-acid battery" for electric vehicles, which one is more durable?

"lithium battery" charge and discharge times : Lithium batteries actually include lithium iron phosphate batteries, ternary lithium batteries, and lithium titanate batteries. points, and the number of "charge and discharge" of ordinary lithium batteries is about 1,000 times. We assume that a cycle of charge and discharge is completed every 2 days, which is equivalent to 2,000 days of use. If the battery quality, charging habits, and riding habits are not taken into account, Depending on factors such as travel habits, theoretically, lithium batteries can be used for about 5 years.

The number of charge and discharge of " lead-acid battery " : Lead-acid batteries include graphene batteries, black gold batteries and other subcategories. Let's look at ordinary lead-acid batteries. Its "charge and discharge" times are approximately About 350 times, a charge and discharge cycle is completed in 2 days. Then, without considering other factors, theoretically, lead-acid batteries can be used for about 2 years.

Assuming that a "charge and discharge" cycle is completed in 2 days, the theoretical life of lithium batteries is 5 years, while that of lead-acid batteries is 2 years, a difference of 3 years. Of course, there are also factors such as battery quality, There are many factors such as different vehicle needs and charging specifications. However, there is no doubt that lithium batteries are definitely more durable than lead-acid batteries.

Long life does not mean higher cost-effectiveness. There are several factors that need to be considered when choosing a battery.

However, experts believe that if you choose a battery when buying an electric vehicle, its lifespan is only one of the reference factors. If you only look at the lifespan, It will not lead to the situation that the current market share of "lead-acid batteries" will be greater than that of "lithium batteries". Whether it should be equipped with "lithium batteries" or "lead-acid batteries", in addition to durability, there are several factors that also have High reference significance;

01 battery price factors , price is a factor that needs to be considered when purchasing any product, especially electric vehicles, as the means of transportation chosen by low- and middle-income people, price is a "sensitive" factor, and An important factor restricting the application of lithium batteries in electric vehicles is that normally, the price of lithium batteries is about 3 to 4 times that of lead-acid batteries.

02 Battery safety factors . Recently, many electric vehicle safety hazards have occurred. Some are deflagrations during charging, and some even occur while riding on the road. The fundamental reason for this is the use of lithium batteries. " In terms of safety, "lithium batteries" and "lead-acid batteries", lead-acid batteries have more advantages because they do not have explosive materials.

03 After-sales usage factors of batteries . The battery cost of electric vehicles accounts for about one-half to one-third of the entire vehicle. Therefore, the battery is a relatively expensive part. If there is a problem with the lead-acid battery, it can be activated by However, lithium batteries are almost "disposable" items. Once damaged, they are irreversible. Therefore, lead-acid batteries actually have more advantages in after-sales, and lead-acid batteries have a high recycling rate. Reuse value.

The above is some comparisons between "lithium batteries" and "lead-acid batteries" in terms of life and cost performance. It is not difficult to find that in fact, both have their own advantages. Lead-acid batteries are not terrible, and lithium batteries are not all bad. It is an advantage. When we choose a battery, we still have to choose it according to the actual needs of the car. In principle, the standard: electric vehicles with high endurance should choose lithium batteries, which will not cause the endurance to decline too quickly, while ordinary transportation should choose lithium batteries. Lead-acid batteries are cheap and safe. The performance of batteries for short-distance travel is fully satisfactory. Of course, no matter what battery you choose, the advice of experts is to choose a regular and terrible brand battery. Do not trust low-quality or unqualified batteries, let alone Modifying the battery without authorization may cause safety hazards.

So, lead-acid battery or lithium battery, which one would you generally choose? Everyone is welcome to comment and exchange, follow Electric Vehicle Experts, and share electric vehicle related information and opinions every day.