The reason why pure electric vehicles are not accepted by most people is mainly the cruising range and battery problems. At present, most batteries used in pure electri
The reason why pure electric vehicles are not accepted by most people is mainly the cruising range and battery problems. At present, most batteries used in pure electric vehicles on the market are ternary lithium batteries. Among all battery types currently used, ternary lithium battery has the highest energy density, and its reliability has been verified to some extent. However, ternary lithium batteries are not the best.
As we all know, in addition to ternary lithium batteries, there are other types of batteries with higher energy density, but they have not been fully developed at present. This type of battery is called solid-state battery. Compared with ternary lithium batteries, solid-state batteries have higher energy density.
Just recently, Toyota, which has always been dismissive of pure electric power, announced that it would demonstrate its solid-state battery technology for the first time on 202 1. At present, the prototype products of solid-state batteries have been put into operation. It was originally planned to be shown to the public during the 2020 Tokyo Olympic Games, but it was postponed to 202 1 due to the epidemic situation. According to the test data, Toyota's prototype solid-state battery is much better than lithium-ion battery in charging speed. It only takes 15 minutes from zero to full charge, and the battery life reaches 500 kilometers.
The difference between solid-state batteries and popular batteries at present is that electrolyte aqueous solution is no longer used, so the risk of fire can be reduced. Solid-state batteries (as the name implies) use solid electrodes and solid electrolytes instead of liquid or polymer gel electrodes. However, it is worth noting that the performance of solid-state batteries at low temperature is not good, and its long-term durability has also been questioned in the past. These two problems are also the reasons why solid-state batteries have not been introduced, and the implication of Toyota's release is that it seems to have overcome these two problems.
At present, Toyota has more than 65,438+0,000 patents related to solid-state batteries, and it is the automobile manufacturer with the most patents on solid-state battery technology. In addition to Toyota, there is another Japanese company, Nissan, whose first electric car powered by solid-state batteries may come out in 2028. According to reports, Volkswagen is also close to zero-it may begin to benefit from cooperation with an American startup, and battery production will begin in 2025.
In the field of battery technology used in pure electric vehicles, solid-state batteries are regarded as a major turning point in the development of pure electric vehicles. As I said just now, solid-state batteries and traditional lithium-ion batteries have great advantages in all aspects. Perhaps the battery life will not be greatly improved, but its charging efficiency is several times that of traditional lithium-ion batteries, which is actually equivalent to increasing the cruising range on another level.
According to the information released by Toyota, it only takes 15 minutes from zero to full charge, which is not much different from the refueling time of current fuel vehicles. Even if the cruising range is only 500 kilometers, it is more convenient than the current pure electric vehicle.
In addition, although Toyota said that this technology will be released on 202 1 and has been tested on the prototype, it is necessary to know that the prototype is also a test car, which is not equal to a production car, that is, it is still in the test and development stage. According to the current research and development progress of various brands of solid-state batteries, even if Toyota is used in production vehicles at the earliest, it is expected to be 10 years later at the earliest.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.