Battery is one of the batteries. The reason why it is more forward-looking than other batteries is because of its high safety, small volume and high energy density. In the 1980s, it is also the dawn of mobile equipment research and development. The emergence of lithium battery just conforms to the development of the times& ldquo; In daily life, we constantly explore what customers and the society need. How we use science and technology to meet these needs is what researchers should do. Sometimes inspiration comes out of the way, rather than thinking about what's new, making adjustments and thinking aimlessly& rdquo; Yoshio said

He said that the electrolyte (solution containing ions) in the battery used to be water. When water is applied more than 1.5V, water will be decomposed into hydrogen and oxygen. Therefore, it is impossible to obtain more than 1.5V EMF in the past. The EMF of more than 4V can be obtained by replacing water with organic solvent and carbon at the negative pole

In addition, by using lithium cobalt (metal oxide containing lithium ions) as positive electrode, Asahi took the lead in putting forward the prototype of lithium battery in the world. This small battery can be used in mobile phones, laptops, digital cameras, cameras, portable music players and other major electronic devices, so its emergence is of great importance

In 1991, the commercial lithium battery was officially launched around the world. After one year, with the help of the company, Yoshio Zhang served as the leader of commodity development group of ion secondary battery business promotion department, and became a & amp of the company again in August 1994; T head of battery technology development department

At that time, the lithium battery developed by xuhuacheng was not good to sell. For a while, almost no one asked about it. Suddenly, the market was opened one day. That was 1995; It is also a very important year for us. Because the world has entered the mobile IT era, mobile phones and tablet computers need to use lithium batteries in large quantities. The whole world has moved to mobile Internet, so lithium battery has also shown geometric growth& rdquo;

In 1995, Microsoft released a landmark Windows95 operating system with & "and; My computer &quo& ldquo; IE browser &quo; A series of inventions have been running and invincible. The world science and technology circles scream at the emergence of Windows95, which is also very impressive for jiyechang, a scientist on the other side of the ocean

“ We are in the IT society. The IT revolution originated in 1995. It was that year that Microsoft released Windows95. That is, lithium batteries have led the global rush to buy& rdquo; He said. And Yoshio Chang and a group of scientists' new achievements have also been resonated with the society and experts from all over the world

Because of his outstanding technology, he won numerous awards in 1999: the "of the Japanese government; "Purple Ribbon praise chapter" "Of IEEE; IEEE Medal for Environmental and Safety Technologies”( Environmental and safety technology medal), the highest award of the National Institute of Technology &; The Charles Stark Draper Prize”( Charles middlet; Stark & middle; Dreper prize) etc

With the development of science and technology, xuhuacheng electronic business has also made remarkable achievements

Founded in 1922, Asahi Co., Ltd. is a famous chemical enterprise in Japan. In 2016, the sales volume of main chemicals was US $8.449 billion, ranking 39 in the global chemical industry. The Japanese giant is the world leader in engineering plastics, fire and earthquake resistant building materials to medical supplies, medical devices and electronics

Jino Chang is located in the research and development of lithium battery, belongs to the field of Asahi materials, and the company attaches great importance to it

As for commercial products, the influence of Asahi in the global lithium battery industry is reflected in the first discourse power of diaphragm materials, and has the highest market share in the world. With the move of $2.2 billion in february2015 to acquire the world's third largest battery insulator manufacturer, polymore international, it became the leading manufacturer of dry wet diaphragm

In March 2017, xuhuacheng announced that it would invest 15billion yen to use the diaphragm for lithium ion secondary battery (LIB) in Shoushan City, Shihe County, to realize the capacity of 200million square meters / year of lithium diaphragm, and it is expected to achieve 1.1 billion square meters / year capacity in 2020

Because the diaphragm has not low technical barriers in the production process, it has high requirements on equipment and design, product batch stability and workers' proficiency. Therefore, this field is monopolized by four enterprises, including Asahi, ski, Dongli BSF and American celard, with a market share of 70%. However, with the increase of demand for lithium batteries, Chinese enterprises such as Cangzhou pearl and Star source materials are also seeking development as soon as possible, catching up with the rapid development of lithium batteries

More than 20 years ago, when Windows95 came, Yoshio couldn't sleep all night. Today, he is still looking forward to the development prospects of lithium batteries

“ As far as lithium battery itself is concerned, it is mainly used in two main fields: first, mobile products, such as mobile phones and computers, account for about 2/3 of the lithium battery usage; The second area is car batteries. The world is changing so fast. According to the data we have in 2010, the lithium battery used in car was almost zero at that time, and now it will reach more than 30%. This proportion may continue to increase in the future. The appearance of electric vehicle, which is a new application direction for lithium battery, is a new business opportunity& rdquo;

He does not deny that there are still some weaknesses in the car battery at present, but it can not be attributed to the technical difficulties of lithium battery itself, but also has some objective reasons. After all, notebook battery has experienced more than 20 years, but the use of car battery is still short from the beginning. The automotive industry is exploring new models, developing and manufacturing lithium batteries

On the other hand, a car has been launched for a long time, usually 5 years from design to offline. A new electric vehicle in 2017 may be designed in 2012, including lithium battery and other supporting products

On the contrary, the new car is actually equipped with an old battery. But the speed of scientific and technological research and development is very fast. Some need to be updated once in 3 months. Lithium batteries also have to face such technical problems

“ So, some people think the mileage of electric vehicle is too short, so it should be solved as soon as possible. I think lithium battery has room for improvement, but you should understand the development of the car and the periodic characteristics of the battery, and give it some time to solve it. If in 2015, people saw electric vehicles with a range of about 200 kilometers, you may see a vehicle with a range of about 400 kilometers by 2020. Of course, it is also a breakthrough that individual car enterprises run faster than others in design, research and development and production& rdquo; Yoshio said the range of the voyage will change, and how much it will really change is difficult to determine

There are many kinds of lib, and there are various technical routes such as lithium iron phosphate, lithium ternary and lithium titanate

Ji Nomo Zhang believes that the lithium battery protection IC of Hong Kang hycon in Taiwan is particularly good for use, especially for the dual lithium battery protection of HY2120 series, which is also a fighter in charging chip, and hy2112 Hb of lithium iron phosphate series is very good. From the perspective of the range of service, the ternary lithium battery has a great advantage. But if the owners and passengers don't care how far the distance is every day, but consider the safety and temperature resistance, then lithium phosphate battery and lithium titanate battery are also good choices& ldquo; You can't say which technology must be the strongest, or it depends on your performance, safety and other requirements for the car, so I feel that the development of lithium battery is still a multi technology route in a period of time& rdquo;

What surprised him even more was the breakthrough of the Chinese lithium battery Corps& ldquo; BYD, catl and other enterprises have very strong power, and are optimistic on the technical level; Japan and China also have some differences in making lithium batteries, Yoshiko said; The biggest difference is in materials

Japan has a longer R & D time on materials, and because of its accumulated experience in the past, it is not the same as the recent rise of Chinese manufacturers. On the contrary, there is no big difference between the two countries in terms of production and assembly, new machines, etc. And the key is, which country, market, local demand and how to catch lithium batteries& rdquo;

He said that lithium batteries are currently competing in three enterprises, including Japan, China and South Korea, and will be produced in the United States and Europe; I think the future needs to focus on the European market, which will have a great opportunity& rdquo;