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Electric vehicles are vehicles that rely on electric energy to drive, all the electric energy of electric vehicles is stored in the battery, so the battery is one of the core components of the electric vehicle, the development of batteries in recent years is relatively fast, the most commonly used batteries are lead-acid batteries, graphene batteries, sodium batteries and lithium batteries, what is the difference between them? Which one is more cost-effective to buy? Let's find out!
There are two main categories of electric vehicle batteries
At the beginning, electric vehicles used lead-acid batteries, and with the development of technology, lithium batteries and graphene batteries later appeared, and in 2023, a number of electric vehicle brands launched sodium battery electric vehicles, and sodium batteries have officially entered the field of electric vehicles.
Although there are many types of batteries, according to the manufacturing process of batteries, electric vehicle batteries are mainly divided into two categories, including lead-acid batteries and metal-ion batteries, of which lead-acid batteries and graphene batteries belong to the type of lead-acid batteries, and sodium batteries and lithium batteries belong to metal-ion batteries.
Let's take a look at these two types of batteries separately, what are the differences between them?
Graphene batteries are an upgraded version of lead-acid batteries
Whether it is from the manufacturing process or from the perspective of raw materials, graphene batteries and lead-acid batteries are the same class, both belong to the type of lead-acid batteries, but graphene batteries do have further upgrades than lead-acid batteries.
On the basis of the original lead-acid battery, graphene raw materials are added to the graphene battery, which makes the battery more conductive and further increases the corrosion resistance, so the graphene battery is more durable and has a longer service life.
In addition, the energy density of graphene batteries is larger, so under the same volume, graphene batteries have a larger capacity and more stored power, which can more effectively resist the damage to the battery such as overcharge, overdischarge, and high temperature in terms of safety, and also supports fast charging, which can shorten the charging time.
Sodium batteries have the same performance as lithium batteries, but they are safer
The chemical properties of sodium ion and lithium ion are almost the same, sodium ion is the next cycle element of lithium-ion battery, so their performance is about the same, although the energy density of sodium battery is lower than that of lithium battery, but it is significantly higher than that of lead-acid battery, the key is because of the low energy density, so the safety can be guaranteed, and the sodium battery will not catch fire and explode.
In addition, the raw materials of sodium batteries are more abundant and do not need to be imported, so the manufacturing cost is lower, but mass production has not yet been realized, but there is news that the current sodium battery is lower than that of lithium batteries, and if mass production is realized, the price of sodium batteries can even be compared with lead-acid batteries.
In addition, sodium batteries also have two outstanding advantages, namely cold resistance and over-discharge, sodium batteries even in the environment of -20 degrees, still have more than 95% capacity, can ride normally, which is incomparable with the other three batteries. In addition, the sodium battery can also be discharged to 0 volts, so there is no need to worry about the problem of over-discharging the battery, and it can also release more power, which can achieve a longer battery life.
Which battery is more cost-effective?
The above shares the relevant information of 4 types of batteries, and the same type of battery is compared, so which battery will be more cost-effective to choose?
Compared with graphene batteries, although the price of graphene batteries is slightly higher, when in use, the advantages of graphene batteries are significantly more than those of lead-acid batteries, such as longer service life, longer mileage, and fast charging, so these two batteries are recommended to choose graphene batteries.
Compared with lithium batteries, the energy density of sodium batteries is smaller, but when sodium batteries can be mass-produced, the price of sodium batteries will be cheaper, the key is that sodium batteries are safer and will not cause fire and explosion, so comprehensive consideration, sodium batteries are more recommended.
So, when you think that when replacing the battery, which of the 4 batteries shared above is more cost-effective? #文章首发挑战赛#