It is not only that the batteries (lead-acid batteries) of electric vehicles have not been completely replaced by lithium batteries, but traditional automobiles and motorcycles are still using lead-acid batteries. Diesel locomotives are just as difficult. It is reasonable to say that lithium batteries have developed for so many years and have reached a certain stage of maturity, but consumers do not seem to appreciate it. This is for a reason. The core issues are nothing more than cost performance, reliability, safety and convenience.

Why are electric vehicle batteries not completely replaced by lithium batteries?

      What is the biggest advantage of lithium battery compared to lead-acid, that is, high energy density, the energy density of lithium battery can be three or five times higher than that of lead-acid, therefore, under the same capacity, lithium battery can be three or five times lighter than lead-acid battery, The volume is only 70% of that of lead-acid batteries, but this advantage depends on where it is used.

      A battery is just a power source used in a mobile place. From this point of view, there is no essential difference between a car battery and a mobile phone battery, but now all mobile phones have used lithium batteries. Imagine if you install a lead-acid on your mobile phone. How do you feel about battery usage? The rate of return is higher than that of the early big brother, but you have to have Zhang Fei's muscular arms, and you need a whole big bag to put it in. Therefore, lithium batteries are suitable for use in these very light occasions, which is a rigid requirement, but there is no such strong demand in vehicle applications.

      Although the car also pays attention to the ratio of space volume and energy density, it has not reached the point where people need to do physical operations. Because the energy density of lithium batteries is 3 to 5 times higher than that of lead-acid batteries, the advantage of lithium batteries is not fully utilized in cars. Although the battery is heavy, it is not very heavy compared to the body. After all, the car runs on wheels, and there is no need for people to lift it. It is still incomparable with the strong demand for people to use the mobile phone.

      With the same capacity, the surface price of lithium batteries is about three times that of lithium batteries, although the service life of lithium batteries is theoretically three times higher than that of lead-acid batteries, which seems to offset each other. Lithium batteries only cost more at the initial investment. It's just, an important factor has not been considered, that is, the lithium battery is currently broken, and there is basically no recycling channel. Even if there is one, it can't be sold for a few dollars. Even if you use a lead-acid battery, you can still use it at 1.8 yuan. At least 30% of the price of new batteries can be recovered at the price of /An hour. Just imagine that there is no such high profit in manufacturing now. I can earn so much by selling waste products. Why should I use lithium Battery.

      Although lead-acid batteries can generally only be used for about one and a half years, after you have used the lithium battery for two years, it will not be the same. , still old, in contrast, lead-acid batteries are still cost-effective, at least for the average person who commutes to get off work.

      With the same size, lithium batteries can run farther, but when increasing the mileage, the cost will increase, and the effect is not very obvious for ordinary people to commute to get off work or buy vegetables. Now they can be found everywhere in the city. The charging plug is generally enough to charge at home for one night. For temporary use, you can also use it at work or at a friend’s house. After all, it is used for transportation nearby. The battery car itself is a product after the ban on motorcycles. If you pay attention to mileage, it is far inferior to motorcycles.

      Of course, for food delivery and express delivery groups, they have to rush time and mileage to make money. They will give priority to lithium batteries. After all, it is a tool for making a living. The longer the cruising range, the more money they can make. .

      Lead-acid batteries have no management system. If they are broken, they can be replaced directly. Simple is power. Lithium batteries are too delicate, so you must protect the board and the like. There seems to be no unified standard on the market. If it is broken, you can only find the manufacturer. Just imagine, buying a small electric car is not just to bring it to yourself. It's convenient. If it is broken, you can find accessories anywhere. If it is broken, it has to be mailed back to the manufacturer for processing. There are really few people who are willing to wait.

       Mobile phones often explode during charging. There are also many problems during use. However, the battery capacity of mobile phones is small after all, but it is different in the car. The energy density of lithium batteries is too high and the capacity is large. Once a problem occurs , the explosion is really deadly, and it is very dangerous to catch fire when charging, and lead-acid batteries basically rule out this possibility, which is also an important reason why lead-acid batteries can last for a long time.