Which company has the best new energy technology? Check out the technologies of several major car companies to avoid confusion when buying new energy vehicles

New energy vehicles have been the hottest topic in the past two years, because in the field of gasoline vehicles, we lag behind many foreign brands that have been around for a century, and the gap is large. However, in the field of new energy, domestic brands can completely surpass them, and everyone's understanding of new energy vehicles may only stay at pure electric vehicles.

New energy vehicles have become one of the main directions of future automobile development recognized by the world.

In fact, in addition to pure electric vehicles, new energy also includes extended-range vehicles, such as Ideal Auto.

Extended-range new energy vehicle power mode

Fuel cell electric vehicles (hydrogen fuel) are currently a key development project for Japan and South Korea.

Internal power structure of fuel-type new energy vehicles

And parallel-parallel hybrid vehicles.

Power structure of parallel-parallel plug-in hybrid electric vehicle

Next, let's focus on the most mainstream new energy vehicles on the market, pure electric vehicles! Of course, from lead-acid batteries to nickel-metal hydride batteries, air batteries and sodium batteries, the energy density, charging efficiency and safety are issues that electric vehicles cannot avoid.

Lead-acid batteries

Lead-acid battery electrodes are mainly made of lead and its oxides, and the electrolyte is sulfuric acid solution. In the discharge state, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; in the charging state, the main components of the positive and negative electrodes are both lead sulfate.

NiMH batteries

NiMH batteries are divided into high-voltage NiMH batteries and low-voltage NiMH batteries. The positive electrode active material is Ni (OH) 2, the negative electrode active material is metal hydride, and the electrolyte is 6 mol/L potassium hydroxide solution. It is one of the important directions of hydrogen energy application.

Air battery

The construction principle of air batteries is similar to that of dry batteries, and the oxidant comes from oxygen in the air. For example, zinc is used as the anode, sodium hydroxide is used as the electrolyte, and the cathode is porous activated carbon, so it can absorb oxygen in the air to replace the oxidant (manganese dioxide) in general dry batteries, thereby completing the discharge effect.

Sodium battery

Sodium batteries are a type of high-temperature sodium battery with stable properties, high safety, long service life, wide range of applications, and readily available and non-toxic raw materials. Compared with lithium-ion batteries and lead-acid batteries, sodium salt batteries are safer and more reliable.

So who will be the technological champion and future overlord of pure electric vehicles? Let's analyze them one by one and compare them. For comparison, we can compare the three most popular and powerful brands at the moment, namely, the national brand BYD, the new car-making force NIO, and the world's super giant Tesla.

First, let’s talk about BYD

In the field of pure electric vehicles, the most popular brand is BYD. BYD's predecessor was a battery manufacturer, which has unique and excellent genes. BYD has been making pure electric buses for public transportation, which makes people more familiar with the capabilities of this brand. Of course, the price of this brand is also relatively affordable. Automobiles are a very complex industry, and the number of spare parts for a whole car alone is as high as tens of thousands. Wang Chuanfu was making cars at the time because he believed that new energy vehicles would definitely explode in the future. With the advantage of batteries, he would definitely be able to overtake others and stand out among domestic electric brands.

BYD's pure electric buses, which were once widely introduced in Europe, have also been widely used in China.

BYD's biggest advantage is that it has popularized pure electric vehicles in taxis and buses, making thousands of households aware of the brand's ownership in the pure electric field. It also lets people know that new energy can control the cost of one kilometer to less than 0.1 cent, and makes more people have a better understanding and yearning for pure electric vehicles. However, BYD's biggest barrier lies in the speed of research and development and the low investment in technology, so that in recent years, there have been no particularly outstanding products from the brand. The only thing it can show is the lithium iron phosphate technology "blade battery".

BYD Blade Battery

BYD makes the battery into a blade shape, stacks it up for use, and maintains sufficient rigidity and strength to be used as a structural part. This is a very cool innovation. At the same time, the innovation of the blade battery solves the problem of the low volume-to-energy density of lithium iron phosphate batteries. It can be seen that the biggest problem is the energy density, so this shape is chosen. The editor thinks that this will not last long. When others' range reaches 1,000 kilometers, BYD will only reach 800 kilometers, and the price is not low. However, compared with the ternary lithium batteries on the market, this type of battery is safer, more stable, and has a good battery life. They will also be launched in the "Han" in 2020, so let us wait and see!

BYD Han