Reasons for the slow development of lithium battery technology

For mobile phone, tablet computer users, the biggest trouble is not able to access the Internet, I am afraid that the power is not enough, charging time is too long! So why isn't the battery durable? Let's have a look!

In the past seven years, mobile phones have undergone a transformation from functional to smart phones, and the role of mobile phones in life is becoming more and more important. However, the rapid development of mobile phones, performance and other aspects have achieved rapid development, except that battery technology has been developing slowly, which has also become an important reason for restricting the further development of mobile phones.

History and current situation

Lithium batteries were first used in pacemakers. Lithium batteries have the advantages of extremely low self-discharge rates and flat discharge voltage, allowing pacemakers implanted in the human body to operate for a long time without recharging. Lithium batteries generally have a nominal voltage of more than 3.0 volts, which is more suitable for integrated circuit power supplies.

In 1991, Sony successfully developed lithium-ion batteries. Its commercialization has greatly reduced the weight and volume of portable electronic devices such as mobile phones, laptops, and calculators. However, after nearly two decades of development, whether it is smart-phones, tablets, or Tesla electric vehicles that are now extremely popular, the lithium battery technology used in all electronic devices is not fundamentally different from the use of lithium ion batteries developed by Sony. Lithium-ion battery technology seems to have entered a dead end, from the electronic industry to the promoter of the industry has become a constraint.

Tesla's oversized lithium battery pack.

However, do not be blindly pessimistic. In these two decades, lithium battery technology is not completely stagnant. After many years of technological development, lithium battery technology has made great progress. Especially in terms of charging efficiency, battery capacity, heating and cooling, traditional lithium batteries have also performed better and better. In addition, with the rise of the electric car industry, it will accelerate the innovation and development of lithium battery technology, but it is only necessary to achieve revolutionary changes. There's still time to wait.

Technical bottlenecks

Now that lithium battery technology has reached a development bottleneck, is there any other type of chemical battery that can replace it? For now, the answer is no.

Lithium battery is the best performance battery in all commercial secondary chemical batteries so far. Its characteristics include: high energy, long cycle life, wide range of charging power, and high power discharge performance.

Although lithium batteries have many advantages, there are still many problems in achieving large-scale high-capacity use. The amount of lithium ions in a lithium battery is fixed. If you want to have a longer battery life, you must increase the number of batteries, but this means heavier equipment, more heat, and higher risk of overheating. This is also the main reason why many mobile phones have become a "warm hand treasure" after heavy use. If you want to be safer or more portable, you must sacrifice the number of batteries and the time you use them.

OPPO flash charging technology

Since there are no other substances that have better battery performance than lithium batteries, many mobile phone manufacturers have begun to change their thinking to solve this problem. For example, the VOOC flash charging technology introduced by OPPO can be charged within 30 minutes. About 75 %. At the same time, solve the problem of fast charging heat, ensure absolute safety, this method is to improve charging efficiency, it is worth promoting. For example, Nokia led wireless charging technology, although not yet very mature, charging efficiency still needs to be improved. However, the idea is very good. In the future, we can develop wireless charging technology without a wide range of perceptions and break through the inherent charging boundaries.

future

The future development of lithium battery technology will be affected by both positive and negative aspects. On the one hand, new industries such as smart phones and electric vehicles will continue to expand demand and promote the rapid growth of the lithium battery industry. At the same time, various technology companies will increase the research and development of battery technology. This will greatly promote the development of lithium battery technology; On the other hand, with the intensification of human social energy problems, people's thirst for new energy is very urgent. In the future, there will be a more efficient product to replace lithium batteries. However, the impact of these two aspects is now inevitable, and the latter is unknown.

summary

At this stage, there are many new battery solutions that have emerged. The update of battery technology is long. In addition to technology that can reach commercial levels, it is also necessary to replace batteries of a large number of electronic products and equipment on the market. However, we still hope that this day will come.

The page contains the contents of the machine translation.