As the popularity of family cars grows, traffic pressure in many cities has skyrocketed, and even during the morning and evening rush hours and holidays, there may be long queues on the road. Therefore, some consumers who usually have a very large demand for cars and have a relatively low family income will choose to buy an electric car as their means of transportation. However, the inherent endurance anxiety of electric vehicles has always made many electric vehicle owners feel distressed, especially in the winter, the battery capacity will be greatly reduced.
In order to further improve the range of electric vehicles, people began to study new batteries with larger capacity and better battery life, and lithium battery electric vehicles were born in this context. However, some people feel very puzzled that the mileage of lithium battery electric vehicles is better and the service life is longer, but why do the vast majority of consumers still have a fondness for lead-acid battery electric vehicles?
Advantages of lithium batteries
First, durability
Compared with lead-acid batteries, lithium batteries have obvious advantages over the long service life. The service life of a lead-acid battery is about 2 to 3 years, and the number of charges can be about 300 times. The service life of lithium batteries has reached 4 to 5 times that of lead-acid batteries, and most lithium batteries have a shelf life of up to 10 years, and the number of charges can reach more than 500 times.
Second, light weight
Because the production process of the two batteries is obviously different, the weight of lithium batteries and lead-acid batteries is also very different. Compared with lithium batteries, lead-acid batteries are more bulky and larger. Lithium batteries are relatively lightweight and convenient, and even female car owners with little strength can easily use them. In addition, the lighter weight also reduces the overall quality of the electric vehicle, consumes less electricity, further improves the mileage, and the electric vehicle is more convenient to operate.
Third, the energy density is large
In addition to making the battery weight different, the battery production process also has a great impact on the energy density of the battery itself. Because the energy density of lithium batteries is larger, in the case of two batteries with the same volume, lithium batteries can store more power than lead-acid batteries and have a longer range. In the winter when battery capacity is greatly reduced, a large-capacity battery is often particularly important.
Disadvantages of lithium batteries
First, instability
It is precisely because the energy density of lithium batteries is larger than that of lead-acid batteries, so lithium batteries are also more flammable than lead-acid batteries. The internal components of lithium batteries are manganese dioxide and lithium metal and non-aqueous electrolyte solutions, in a closed battery pack, a large amount of energy once can not be released in time is prone to deflagration. In recent years, the news of spontaneous combustion of lithium battery electric vehicles has indeed occurred frequently.
Second, the price is higher
The metal lithium used in lithium batteries is a rare metal, so the cost of lithium batteries is also higher than that of lead-acid batteries, which determines that the price of lithium batteries will be more expensive than lead-acid batteries. In general, the price of lithium batteries will be about two to three times that of lead-acid batteries, and the overall price of electric vehicles will increase.
Third, lead-acid batteries have not completely withdrawn from the environment
Compared with lithium batteries, lead-acid batteries have various deficiencies, but they have no obvious disadvantages and will not affect people's normal use. On the other hand, the electric vehicle itself is a short-distance transportation tool, lead-acid batteries can fully meet the needs of ordinary people usually travel, but also cheaper and more stable, people naturally prefer lead-acid batteries.
summary:
In general, although lithium batteries are far better than lead-acid batteries in terms of mileage and service life, they are not popular for various reasons. Coupled with the fact that many unscrupulous merchants like to shoddy charge and let a large number of inferior lithium batteries flow into the market, this makes people more and more respectful of lithium batteries.