Brief description of wind vane in power cell field

Remember at the end of last year, I was also asked by my research and development friends(non-electric vehicles) about the battery in the Ningde era. It can thus be seen that although the concept of new energy has long been deeply rooted in the hearts of the people, but the current new energy, I am afraid that most non-industry people are still black eyes, mostly watching the lively mentality.

However, with the broadcast of the "Big Power Heavy" program, the mystery of power batteries has been opened for non-industry insiders. The reputation of the Ningde era has also risen to a new level, so that this week, the report on the Ningde era and the 6 micron copper foil has not stopped. Of course, it also deserves the honor.

In fact, from the perspective of the power battery industry alone, China is indeed at the forefront of the world. In 2017, Ningde era shipments have surpassed Panasonic and become truly the world's first. However, from the perspective of technology, there is still a certain gap between Chinese lithium power and foreign countries. This gap is mainly reflected in the development of new battery technology, power system integration, and product manufacturing processes.

The first two are relatively easy to understand, the gap is also very obvious, but there are gaps in the product manufacturing process may be many industry insiders are not convinced, because the localization of lithium is already an undeniable established fact. But what I want to emphasize is that this kind of localization is actually very one-sided.

Intuitively, the four major raw materials of lithium electricity can be produced using domestic equipment, and the product quality is also guaranteed. However, if we continue to dig deeper, we will find that the equipment is all domestic, but some of the components of these domestic equipment are still imported. From this point of view, the domestication of lithium has not yet been really fully put.

Of course, this technology gap is not irreparable. In the past, countless industries have proved that when the industry is strong to a certain extent, it will surely lead to rapid technological innovation upgrades and thus achieve technological overtaking. In short, technology is important, but not absolute.

Here's a look at new technologies and events in the lithium industry this week.

1, Toyota / Honda / Nissan and other 11 Japanese companies jointly built a hydrogenation station operation company

Japan's 11 companies announced on the 5th that they will jointly create a new company responsible for the construction and operation of a fuel cell vehicle hydrogen station in order to promote the popularization of fuel cell vehicles. The 11 companies include Toyota, Nissan, Honda, JXTG Energy, Tokyo Gas, and two financial investment institutions, Toyota Trading and Japan Policy Investment Bank.

According to the press release issued on the same day, the new company is called "Japan Hydrogen Station Co., Ltd." and the first phase of the project plans to complete the construction of about 80 hydrogen refueling stations by the 2021 fiscal year.

The Japanese government plans to use about 40,000 fuel cell vehicles nationwide by 2020, but only about 2,300 vehicles will be introduced by the end of 2017. Analysts believe that the limited number of hydrogenation stations and poor hydrogenation is an important reason for the difficulty in promoting fuel cell vehicles.

At present, there are less than 100 Japanese hydrogen refueling stations. It is reported that the construction cost of a hydrogen station is between 400 million and 500 million yen(about 106 yen), so it is difficult to increase the number of hydrogen stations by the power of a single company.

Comments: Among the many Japanese car companies, there are three major factions: Honda, Toyota and Nissan, led by Toyota. It is hard for outsiders to imagine that such an almost indistinguishable group would join forces to build a joint venture, at least in China, which is unlikely to be a BYD and ningde era joint venture. This is both a strategic and informal style for Japanese companies and a sign of Japan's strong commitment to fuel cells.

2.Chinese scientists have invented lithium batteries that can be used at minus 70 degrees

Chinese scientists have developed a lithium battery that can be used at minus 70 degrees Celsius and is expected to be used in the extremely cold regions of the earth and even in outer space in the future.

According to a study published in the latest issue of the American energy academic journal Joule, the new battery developed by Xia Yongyao of Fudan University in China uses ethyl acetate as a electrolyte with low freezing point and conductivity under extremely low temperature conditions, and uses two An organic compound is used as an electrode, which is a PTPAn cathode and a PNTCDA anode, respectively.

Unlike the electrodes used in conventional lithium-ion batteries, the researchers say, the electrodes use organic compounds that do not rely on the "embedding process", that is, they do not need to embed lithium ions into the molecular matrix of the electrode to prevent the embedding process from slowing at low temperatures.

Xiayongyao said that ethyl acetate electrolytes and organic polymer electrodes allow rechargeable batteries to work at very low temperatures of minus 70 degrees Celsius. Compared to the electrode material of traditional lithium batteries, the new battery material is abundant, cheap and environmentally friendly, and he estimates that the price of this material is only about one-third of the former.

But the researchers acknowledge that the main challenge is that the unit mass energy of the battery is less than that of a commercialized lithium battery, and that the production process needs to be optimized. Despite this, Xiayongyao believes it has significant application potential.

Comments: low-temperature performance at the expense of energy density is not popular at the moment, because for consumers, the most intuitive and worrying thing is mileage, even for the best electric cars. Its endurance still falls short of consumers 'expectations, and the sacrifice of energy density is clearly in its own grave. Of course, this is not to say that this type of battery is not useful. After all, the battery has a wide range of functions. There is always a subdivision area that is most interested in low temperature performance.

3, Bosch sold solid cell subsidiaries to switch to hydrogen fuel cells

Recently, Bosch decided to disband two lithium-ion technology joint ventures -- Lithium Energy and PowerGmbH & & amp;. Co.KG(LEAP) and sells its solid state battery subsidiary Seeo.

But that doesn't mean Bosch has given up the battery sector. Ralph Brand, head of mobile solutions at Bosch Group, believes that Bosch has a strong battery management system technology and system integration capabilities. Together with outsourced battery units, Bosch can provide customers with a complete battery system.

In addition, Bosch also said that in 2018, it will continue to continue to work on hydrogen fuel cell technology, continue to tap the potential of internal combustion engines, and strengthen the development of autopilot and driver-assisted technology.

Comments: Bosch's "break away" can actually be seen as a vane in the field of new energy power batteries. On the one hand, the power system assembly will replace the power cell itself and become the most core competitiveness of electric vehicles; On the other hand, fuel cells are really beginning to become no less powerful than lithium batteries. There may also be a lot of industry insiders questioned the development of fuel cells, but from the actual situation, whether capital, technology, industry has become a climate, such remarks at this time, it is undoubtedly a little naive.

The page contains the contents of the machine translation.