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According to the data released by the Ministry of Industry and Information Technology in December 2020, the market sales of new energy vehicles
in China will exceed 1.3 million, and according to this growth trend, the sales volume is expected to reach 1.8 million this year. Driven by the
rapid growth of the new energy vehicle market, the new energy battery industry is also developing rapidly.
Generally, the mainstream batteries on the market are divided into two kinds: lithium iron phosphate battery and lithium ternary battery. Lithium iron phosphate battery advantages are cheap, good stability; The drawback is that the battery's energy density is not high enough, which is what we call its durability. While ternary lithium battery and it is just the opposite, this kind of battery density is high, the capacity is large, but the stability is not good, the news often appears on the new energy vehicle fire is mostly it dry.
But aren't there any other batteries besides the brothers? The answer is definitely no, so what else is there? In order to find out, this article will start from the battery, for you to review the new energy market surging another side.
Ann: Graphene batteries
In January this year, GAC's high-end electric vehicle brand Ai 'an released a battery trailer, "graphene super battery" will enter the mass production stage. Later, Ouyang Minggao, an academician of the Academy of Sciences, made a statement that put Aian's graphene battery in the spotlight, although he did not name it by name.
In fact, Aian's so-called "graphene battery" uses graphene as a new silicon-based anode material, which is still a lithium battery in essence. The purpose of this is to increase the total capacity of the original battery and the charging speed of the battery. Although Aon's "graphene battery" is not new technology, it is a major technological breakthrough.
Tesla: Cobalt-free battery
For the Chinese market, Tesla chose to cooperate with Ningde Times, the leader in China's lithium-ion iron phosphate battery industry, and widely used in the domestic Model3. However, the low energy density of lithium-iron phosphate batteries will not be enough to fulfill Musk's dream of high battery life. As a result, Tesla slowly began to use ternary lithium-ion batteries in later products.
At present, cobalt, which is a scarce metal resource, is often used as the cathode material in the construction of ternary lithium batteries. In the Democratic Republic of Congo, which supplies nearly 70 percent of the world's cobalt, supplies are running low and prices are rising because of prolonged political unrest.
In order to "reduce cost and increase efficiency" to the extreme, now Musk has set his mind on the upstream industry of new energy batteries. At this time, the high nickel lithium battery with cobalt removal shows its unique significance.
NIO: Solid state batteries
"2020 is a year of rebirth for NIO."
From last year's half-buried, to today's vigorous, with Li Bin this sentence to summarize 2020 NIO is appropriate. Past experience aside, the biggest surprise of Nio this year was the 150kWh solid-state battery.
Different from the liquid lithium battery, Nio's solid-state battery has no electrolyte, so there is no risk of electrolyte leakage, and there is no short circuit problem, so the safety is better. In addition, solid-state batteries can easily exceed the 300Wh/kg energy density limit of mainstream cells, and hopefully will reach 400Wh/kg or more in the future.
The drawbacks of solid-state batteries, however, are obvious: they conduct electricity poorly, cost a lot of raw materials and are hard to commercialize.
BYD: Blade battery
While BYD has been stagnating in the high-end brand market, it has been making strides in technology.
In March 2020, BYD released the "blade battery" in the field of new energy batteries caused a hot discussion. "Blade battery" is a kind of lithium iron phosphate battery, BYD uses unique technology to recombine its structure, while retaining safety, the volume utilization of the battery has been greatly improved, the energy density can reach the same level as ternary battery. "Blade battery" technology ignited the capital market at home and abroad, BYD's stock price only rose, market capitalization has become the leading domestic new energy vehicles.
Summary: In the Forecast Report of China's Automobile Market in 2021, it is proposed that by 2025, the domestic market is expected to sell about 6 million vehicles, and the demand for new energy vehicles in the future is promising. At present, various car companies are keen on the innovation of battery technology, no doubt in order to further reduce the cost of new energy vehicles. As the "heart" of new energy vehicles, the breakthrough of battery technology will become the key to win in the field of new energy.