Almost everyone who has used a PHS or a smartphone has lamented that the battery is increasingly worn out. In the past, a fully charged cell phone could last a week, but today a fully charged smartphone can only last just a little. A day. Not bad. Of course, everyone understands that smartphones consume more power than non-smartphones.
However, from iPhone 4 to Apple's latest series which will be released this year, the battery technology (battery life) of mobile phones has still not changed significantly. significant. It even makes people feel that the battery technology has been improved. improves over the years. Many netizens joked that human technology has been locked by the three-body sophons, and it is difficult for science and technology to develop further. All joking aside, however, it is currentlyt impossible for humans to achieve a revolutionary breakthrough in battery technology.
At present, almost all smartphones use lithium batteries. There are two types of lithium batteries: lithium-ion batteries and lithium metal batteries. Regardless of the type of battery, the “lithium element” is always the main component. material. Since lithium is the lowest potential metal in the periodic table, using metallic lithium as an electrode material can produce the greatest potential difference between the positive and negative electrodes (lithium is used as negative electrode material in lithium ion batteries and lithium is used as negative electrode material in lithium ion batteries is used as positive electrode material in lithium metal batteries), the maximum voltage can be. generated during operationt and more electricity can be stored. Therefore, the energy density of lithium batteries is far higher than that of lead-acid, nickel metal hydride and nickel-cadmium batteries. The power contained in a lithium battery of the same volume is 5 times that of a lead-acid battery and 3 times that of a nickel-metal hydride battery; The rate is negligible, which not only increases power in disguise but also extends battery life. At the same time, lithium batteries are lightweight, do not contain heavy metals, and have very little environmental pollution. Perhaps the only downside is that they are relatively expensive!
Understanding these characteristics of lithium batteries, we know that using lithium as the electrode is the best choice, so half of the mobile phone battery technology has been "locked", and we do notWe can only optimize the other pole. . Improved materials, electrolytes and separators. For example, reduce the resistance of the separator, improve the conductivity of the separator, ensure the transmission of lithium ions, increase the resistance of the separator and reduce the thickness. In this way, the progress of battery technology is gradually promoted, so the operating space is relatively small, with only a small improvement of 3% each year. If you look closely, battery technology has improved by 34% in 10 years. Isn’t that considered great progress? Sorry, high-end chip technology is advancing faster. It will double within 1 to 2 years and the annual improvement rate is between 60% and 70%.
The performance of the A11 processor on the Apple A small core has been improved by 70%, and multi-core performance has been improved by 75%. Overall, the performance improvements of the A11 compared to the A10 processor is around 60%, but the release of the A11 and A10 processors is only a year apart. Therefore, progress in battery technology cannot keep up with progress in chip technology. More powerful computing and processing capabilities will consume more energy. It's no wonder that we feel that mobile phones are consuming more and more power.
Many people have promoted graphene batteries and some charging technologies rapid to black technology in recent years, and the reports are damning. Whether it is graphene batteries or black technology fast charging technology, there are two things that cannot happen. achieved at the same time, one is mass production and the other is security and stability. Previous information indicated that a graphene battery composed of a bed batteryhium + graphene technology could charge a car in 10 minutes and have a range of 1,000 kilometers. It is claimed that graphene technology can overturn the energy industry with its characteristics of energy density, high conductivity. strength and lightness are superior to lithium batteries. Such reports never stopped, but people never saw the product. The concept of graphene seems to be a bit over-consumed, or businessmen with ulterior motives exaggerate and boast about graphene to make profits. Generally speaking, lithium batteries remain the most ideal battery for public use. Although battery technology innovation may take a long time, fortunately, charging is relatively fast at present, so there is no harm in waiting.
The cost of electric batteries has fallen by 80% in ten years. Is this path “finished”?
I think everyone knows the term shared cars, but for index-limited cities, shared cars can very well solve the travel problems of people without cars, such as commuting. to and from taking time off work, going out for fun on the weekend, etc. However, with the current epidemic of shared cars, relevant city management is difficult to follow. There are currently three major problems hindering the development of shared cars in the city. bottleneck period!
1. License plate restrictions
We are optimistic about the future development of shared cars. A certain car company plans to launch shared cars for more than 10,000 yuan by the end of the year. However, due to license plate restrictions, this plan will not be launched. The goal has been reducedt to 4,000 units, but in reality only more than 900 photos were taken.
2. Parking problem
In many large cities, it is now very difficult to find a parking space. The company planned to get 200 parking spaces in a certain city by the end of the year. year, but in reality it only reached 200 parking spaces. About 15%.
3. Charging problems
Although shared cars are growing rapidly, for now, the lack of license plates, parking spaces, charging stations and other resources has become a bottleneck bottleneck for the development of the industry.
According to the current situation, in a short time, the large-scale epidemic of car sharing has caught relevant departments off guard and may affect the current traffic and order in order to solve these problems. , some companies are even developing: whenWhen a user requests a ride, the customer can reach the desired destination through driverless driving and then automatically drive to the parking space or wait for a new customer order.
So although the development of shared cars is in full swing, the corresponding support measures for shared cars are not very comprehensive. Only when the licensing, parking and charging issues are resolved can the basic development of shared cars be realized. be achieved.
What do you think about shared cars?
No. A drop in price does not mean that the product has exited the market or that there is no longer room for growth.
In interviews, many battery industry practitioners revealed that the cost and price of electric batteries have fallen by nearly 80%. At the same time, the production technology of battPower series is constantly improving. As a result, there is greater room for improvement in the performance of power battery-related products. As the production cost of battery raw materials decreases, companies will naturally lower prices in the smart device market.
Electric batteries are still in a state of rapid development, but the cost of raw materials has fallen.As the cost of raw materials gradually decreases, production technology continues to increase. The combination of new technologies and traditional production materials will inevitably be accompanied by product upgrades. In addition, new energy vehicles have gradually occupied the market of traditional fuel vehicles, and the main power source of new energy vehicles is batteries.
Take the example of new energy vehiclesTesla's. The company is at the forefront of the industry and many high-quality battery production companies have become its partners. CATL has shown advantages in this field and the two parties have established a cooperative relationship. Judging from the current situation, CATL will further develop battery production technology and manufacturing technology.
With the development and application of technology, large battery manufacturers no longer focus on the production of lithium batteries, but instead increase product research and development and use other raw materials to produce batteries. Although new batteries do not have a price advantage, they can gradually change the status quo of the battery market. Additionally, the price of raw materials has fallen by 80%, which has more advantages than disadvantages for ba manufacturers.tteries.
Generally speaking, the development of electric batteries has little to do with the rise or fall of raw material prices. The development of power batteries depends on new technologies and production lines. If the company lacks new technologies, it can only show its helplessness. Additionally, many problems arose during the development of lithium batteries. As a result, battery manufacturers have set their sights on the emerging battery industry. However, developing new batteries requires updating raw materials and breaking technical limitations, which takes a long time.