Keyword search: battery plant , lithium battery factory , power bank works , lifepo4 battery mill , lithium forklift battery manufacturer

The most mainstream types of batteries used in new energy vehicles are lithium-ion batteries, ternary lithium batteries, and fuel cells. BYD's blade batteries belong to lithium-ion batteries.

The first king to rise is the lithium iron phosphate battery. lithium-ion batteries are not expensive, but their biggest advantages are stability and high safety, making them the preferred choice for carrying new energy vehicles. But this type of battery has a lower energy density, in simple terms, limited power supply and low range. However, customers are particularly fond of "range", so the glory of lithium-ion batteries has not been able to continue.

The latter is the ternary lithium battery. Similarly, batteries produced by BYD have a single energy density of 150Wh/kg for lithium-ion batteries, while ternary lithium batteries have an energy density of 200Wh/kg. This means that using ternary lithium batteries can achieve higher range. National policies tend to favor high range car models, and consumers also generally have anxiety about range. If the vehicle uses traditional lithium iron phosphate, it will affect the range, making it difficult to receive subsidies and the car difficult to sell. So ternary lithium batteries once became the darling of the market. At least some new energy vehicle manufacturers, including BYD, use ternary lithium batteries. Last year, Tesla, led by ternary lithium batteries, surpassed BYD in sales to become the world's number one electric vehicle factory.

Fuel cells are a flash in the pan, but they have undeniable potential. Fuel cells are the most unique. The function of the first two types of batteries is to store electricity, while the function of fuel cells is to generate electricity. This is a power generation device that converts chemical energy from fuel and oxidants into electrical energy. The most widely used fuel currently is hydrogen. During work, fuel and oxidants react from external sources, continuously releasing electrical energy. Fuel cells contain enormous energy, abundant power, and range is not a problem. Regarding fuel cells, the most popular one before was youth cars. There was once a news article: "The water hydrogen engine was taken offline in Nanyang, Henan, and vehicles only need to add water to drive.". The protagonist inside is the Youth Automobile Group. The vehicles mentioned only need to be filled with water to drive. The process is as follows: water is converted into hydrogen, hydrogen generates electricity, and electricity drives cars. The core here is fuel cells. But what energy is used to convert water into hydrogen?

Fuel cell vehicles have not yet been truly commercialized. From 2013 to the end of 2017, a total of 6475 hydrogen fuel cell passenger cars were sold worldwide. From January to November 2019, the sales of fuel cell vehicles in China were 1337 units. Even if the market is not good in 2019, these sales can still be ignored. Fuel cell vehicles also face a problem of not having enough hydrogen refueling stations. The construction of hydrogen refueling stations is crucial for the commercialization of fuel cell vehicles.

In addition to the three major batteries mentioned above, there are also some non mainstream and non negligible competitors. In addition to its three main players, Tesla has started developing four element lithium batteries, and in the future, there may be batteries priced at five, six, or ten yuan. In March, Samsung in South Korea launched all solid-state batteries. Solid state batteries were once considered the most suitable for use in electric vehicles. Volkswagen has launched the Audi PB18e-tron equipped with solid-state batteries this year. In addition to having the speed of a sports car, this car also has the superpower to complete charging in 15 minutes.

Emerging Blade Battery

On March 29, 2020, at the press conference of blade batteries, Wang Chuanfu released a video of blade batteries undergoing needle puncture testing. Wang Chuanfu said: Because ternary lithium batteries cannot pass this test, the country no longer regards this test as a mandatory inspection method for batteries. But in pursuit of safety, BYD still conducted a needle puncture test called "Mount Everest". The test is like this, using a 3-8 millimeter diameter steel needle to pierce the battery and simulate the short circuit state of the battery when it encounters a fault or accident.

In the video played, after the blade battery was penetrated, there was no open flame, no smoke, and even no significant increase in temperature. The eggs placed on the surface of the battery have not undergone significant changes due to heating. BYD has explained the principle of blade batteries. The weakness of lithium-ion batteries is their low energy density. BYD's solution is to adjust the combination method, reduce the number of beams and columns used for support, and give space to battery cells that truly have energy storage capabilities, resulting in higher energy density. The ratio of volume to energy density of blade batteries is 50% higher than that of traditional lithium iron phosphate block batteries. The range of the car has been increased to 600 kilometers.

The contradiction between safety and range

This contradiction is a long story, because energy itself is dangerous, and the greater the energy, the lower the safety naturally. A rickshaw is not dangerous, but it cannot run far. If you want to run far, you need to use gasoline and hydrogen, which may cause fuel and explosions. Even with a blade battery, the BYD Han only has a range of 605 kilometers, which is the ceiling of lithium-ion batteries. The Tesla Model S has a range of 660 kilometers, while the Tesla Roadster has a range of 1000 kilometers. In terms of fuel cells, Honda's Clarity has a range of 750 kilometers.

In terms of range, with so much effort put in, lithium-ion batteries can only barely match ternary lithium batteries. The ternary lithium battery camp will obviously not stop moving forward. If necessary, don't mind increasing the energy density further.

Another focus of competition is security. The safety advantage of lithium-ion batteries does not mean that the other two types of batteries are unsafe. Tesla has a complete battery management system that puts a lot of effort into overcharge protection (OVP), over discharge protection (UVP), over temperature protection (OTP), and over current protection (OCP). The safety performance is also increasingly improving through technologies such as shell protection and timely cutting. The road that fuel cells need to take may be even longer, and it seems that the technology is not yet mature. But just as humans have adapted to the dangerous energy source of gasoline, they will gradually become accustomed to hydrogen fuel and nuclear fuel. And its surging power is enough to crush storage batteries.

Each of the three types of batteries has its own strengths

lithium-ion batteries excel in safety; The advantage of ternary lithium batteries lies in their high energy density and long range; The huge advantage of fuel cells lies in their fast charging, which can fill the car with hydrogen gas in 3-5 minutes.

Another weakness of lithium-ion batteries is concerning, as they perform poorly at low temperatures. In the vast north of China, Europe, and North America, there are too many places that will test the low-temperature operation ability of batteries. When the temperature drops to -10 ℃, a 3500mAh lithium iron phosphate battery can withstand less than 100 charge and discharge cycles, and its power will decay to 500mAh, which is basically scrapped. In winter in the north, lithium-ion batteries may not be the best choice.

But lithium iron phosphate also has a winning trick, as its dependence on precious metals is very low. If new energy is further popularized, material supply will become a new bottleneck, and the use of conventional materials alone, such as lithium iron phosphate, undoubtedly has enormous advantages.

With the victory of blade batteries, BYD and its subsidiary, Ford Battery, will have two to three years of good days. But the battle in the battery industry will not end, and more new technologies will emerge. So as to drive new energy vehicles forward.

Comment

On a global scale, there are abundant reserves of oil and natural gas, and in the future, the oil market will present a situation of oversupply. But the situation in China is not the same, as China's oil relies on imports. With the increasing strength of the country, the demand for energy will further expand. From a national security perspective, China will not allow its energy lifeline to overly rely on others. So, the Chinese market alone can meet the sales volume of new energy enterprises. The current accelerated iteration of technology is in line with the needs of industry and national strategy.

Lithium ForkLift Batteries ,Ensure Quality

Our lithium battery production line has a complete and scientific quality management system

Ensure the product quality of lithium batteries

Years of experience in producing lithium forklift batteries

Focus on the production of lithium batteries

WE PROMISE TO MAKE EVERY LITHIUM BATTERY WELL

We have a comprehensive explanation of lithium batteries

QUALIFICATION CERTIFICATE

THE QUALITY OF COMPLIANCE PROVIDES GUARANTEE FOR CUSTOMERS

MULTIPLE QUALIFICATION CERTIFICATES TO ENSURE STABLE PRODUCT QUALITY

Providing customers with professional and assured products is the guarantee of our continuous progress.

Applicable brands of our products