How to choose the right primary lithium battery



It is a new type of high-energy battery, which has the advantages of large specific energy, high voltage, wide operating temperature range, long storage life, environmental protection and no pollution. However, any type of battery must be suitable for the conditions of use of electrical appliances. Liyuan Battery Editor will make some explanations on the technical issues that need to be considered when...

How to choose the right primary lithium battery

Ma, of the Battery Industry Association, said the efficient connection between smart grids and lithium batteries is an efficient way to use resources. The following Shenzhen power Source disposable lithium battery manufacturers and everyone together to understand the situation.

According to the General Administration of Quality Supervision, Inspection and Quarantine, lithium products now account for 40 percent of the global market. In 2009 alone, China exported 3.269 billion rechargeable lithium batteries with a total export value of 1.081 billion US dollars, and 759.8 million disposable lithium batteries with a total export value of 508 million US dollars. Not only that, but the number has increased by 20 to 30 percent every year since 2006.

Our hard-won market share began in 1998. At that time, Tianjin Power Research Institute was just starting to try to commercialize lithium-ion batteries. When BYD Wang Chuanfu decided to enter the field in 2000, he had to go to Japan to buy equipment. By contrast, research into lithium-ion batteries in developed Western countries dates back to Edison's time.

Consumers' awareness of lithium-ion batteries began with mobile phones, which allow them to be carried from hand to pocket, shrinking in size and providing longer battery life. In fact, lithium batteries have even more brilliant achievements. For example, because of the use of lithium subgalvanic batteries, cardiac pacemakers have the characteristics of low self-discharge rate and gentle discharge voltage, which makes it possible for pacemakers to be implanted into human bodies for long-term use.

Today, with the development of microelectronic technology, miniaturized equipment is increasing day by day. Lithium batteries can be found everywhere in mobile phones, laptops, power tools, street lamps, navigation lights, small household appliances and so on. Lithium batteries, with their advantages of large reserves, light weight, rechargeable and pollution-free (no heavy metal cadmium), quickly eliminated nickel cadmium, nickel metal hydride and other battery technologies and dominated the market.

Lithium battery development bottleneck

Like many industries in the extensive economy of the past, lithium-ion batteries have been able to capture the market quickly because of their low cost. Helpless to this, the US government even concocted some "lithium batteries need to be packaged as dangerous goods" tricks, trying to increase the cost and threshold of lithium battery export. For the time being, let alone how outsiders make trouble, lithium battery in the short development of more than ten years, there are more or less of their own hard wounds.

Cao, of the battery Industry Association, told Securities Daily, "Aside from lithium battery materials and production equipment, our country's lithium battery technology level is in step with that of the world. We have only been developing for more than a decade, so this is worth promoting. But it also shows that we are still being led by the nose by other countries in terms of technology and production facilities."

According to reporters' understanding, if the problem exists in production equipment and technology process, our country can also rely on imports and semi-artificial way to solve, even if the high cost of imported equipment, can still rely on low labor costs diluted. And in the production of lithium battery materials, such as diaphragm, battery surface steel shell stamping materials and other imports, not only the cost of sudden, and subject to other countries, but also to some poor quality imported materials to open the door, may in turn affect the brand image of lithium batteries.

In addition, because there are few self-owned brands of micro-electronic products, lithium battery enterprises mainly serve overseas customers, so every time the customers' products are adjusted, Chinese lithium battery manufacturers must change the relevant standards of the production line, and in many aspects, the requirements of overseas companies are very harsh.

Even so, the combination of international standards, imported materials, technical level and many other factors, lithium batteries still give people the impression of low-end, cheap. Pan Jing gave the reporter calculate a sum of accounts, "laptop lithium battery 18650 model of a cell, Samsung can sell to $3.65, and our company only sold $1.8, the enterprise production of such a cell profit can only reach 7% - 10%, compared to Samsung's profit can be imagined."

In terms of bottlenecks in the development of lithium batteries, Mr. Ma said, "Wind power and photovoltaic have very high requirements for lithium battery materials, such as high temperature resistance in desert environment, and low temperature resistance in offshore wind power." Pan Jing also told reporters, "Lithium batteries adapt to the environment of minus 20 degrees to 60 degrees, specific to the temperature difference between the north and south of China, will have some impact on the performance of the product itself." At the same time, the broader market has put forward stricter standards for the volume, repeated charging ability and fast charging ability of lithium batteries. After adapting to the volume and volume requirements of micro-electronic products, lithium batteries immediately have to adapt to the development of market demand and rapidly improve a series of technical indicators, which is itself a big problem.

Development prospect of lithium battery

Volume, materials and other technical upgrades, pointing to the hottest expected market demand - electric vehicles. According to a recent report released by Japan's Fuji Institute of Economic Research, the global automotive lithium battery market will expand by more than 200 times in six years. This will bring unlimited development space to lithium battery products, especially those lithium battery companies in the major automobile consumption countries.

Mr. Ma expressed optimism about the technology upgrade, "With the demand, there will be natural development, under the adjustment of our economic policy, I believe there will be a breakthrough in technology soon." Pan Jing also believes that, "Just like photovoltaic, as soon as the national subsidy policy was introduced, enterprises from all over the country came to solar energy, and the speed of technological upgrading was quickly improved. "The price of electric vehicle batteries is really out of reach for ordinary consumers, and it is because of the government's support policy that many companies are investing in this product."

Reporters learned that the current electric vehicle endurance capacity is only 200-300 kilometers, charging needs 8 hours, the two indicators alone, has seriously restricted its industrialization process in China. However, human wisdom is infinite. The industry has come up with an electric energy storage and trade system based on electricity change mode, which effectively solves the practical problem of not being able to fast charge. However, the range of 200-300 kilometers still needs to be improved rapidly. If this bottleneck is broken, the day when electric vehicles enter the thousands of households, it will be the rapid expansion of the lithium battery market.

An unnamed industry insider told reporters, "There is still a process to upgrade the technology to fully adapt to the standard of electric vehicles, but wind power, photovoltaic, these unstable power generation mode, through energy storage effectively avoid their own problems, but also can not be bound by the feed-in tariff, so that the temporary unprofitable new energy trade.