1、 Continuous progress in the field of new energy
With the continuous progress of human civilization, the application of energy is also improving, making it safer and more efficient. At present, the energy application is transitioning from fossil fuel energy to green energy, and the fuel vehicles are also gradually converted to electric vehicles, followed by a large increase in the use of batteries.
At present, most of the electric vehicles and energy storage systems use lithium ion batteries. Although they have high energy density and fast charging speed, they have certain security problems. Therefore, the new energy industry is actively developing solid state batteries, hoping that they can gradually improve and replace the traditional lithium ion batteries.
The main difference between solid state battery and lithium ion battery is electrolyte. The electrolyte of lithium ion is liquid and exists in the form of gel and polymer, which makes it difficult to reduce the weight of the battery. In addition, the energy of a single lithium battery pack is not high, so multiple battery packs must be connected in series to further increase the weight. The cost of engineering, manufacturing and installation of battery packs accounts for a large proportion of the overall cost of electric vehicles.
In addition to the weight problem, the electrolyte is also flammable, unstable under high temperatures, and has the problem of thermal runaway. If a car accident occurs, it may lead to a serious fire. Electrolytes are also easy to freeze at low temperatures, reducing the battery's endurance. In addition, the electrolyte will corrode the internal components of the battery, and dendrites will be generated during the charging and discharging process, reducing the capacity, performance and life of the battery.
2、 Unique features of solid state battery
The electrolyte of solid state battery is solid, with high energy density
There is no heavy liquid electrolyte inside the solid state battery, but a solid electrolyte in the form of glass, ceramics or other materials. The overall structure of solid state battery is similar to that of traditional lithium-ion battery, and the charging and discharging methods are much the same. However, because there is no liquid, the battery is more compact, smaller, and the energy density increases. If the lithium-ion battery in the electric vehicle is replaced by a solid state battery of the same volume, the capacitance can theoretically be increased by more than twice.
In addition, the solid state lithium battery is light and does not require the monitoring, cooling and thermal insulation system of lithium ion battery. The chassis can make more space for batteries, which greatly increases the endurance of electric vehicles.
In addition, the charging speed of solid state battery is faster than that of lithium ion battery, and there is no corrosion problem, so the service life of solid state battery is longer. As for the working temperature, the solid state battery has thermal stability and will not freeze at low temperature, which can ensure the endurance of electric vehicles for users living in the middle and high latitude and very cold areas.
To sum up, solid state batteries have four advantages: high energy density, fast charging speed, long service life and good thermal stability.
Of course, solid-state batteries also have their own problems: high cost and difficult to mass produce
Because the internal structure of solid state battery is tight, it is easy to be affected by thermal expansion and cold contraction. If the design is improper, the internal structure may be affected; The problem of crystal branches has not been solved, and the battery structure may be damaged.
But most importantly, solid-state batteries are expensive and not easy to mass produce. Solid state batteries are not new inventions. They have been used in heart rate regulators, wearable devices and other fields. Until recently, the industry began to study the application of solid state batteries in electric vehicles and other large equipment. However, electric vehicles are still dominated by lithium-ion batteries.
To sum up, solid state lithium batteries have three major problems: expansion and contraction affect the structure, crystal branches cause structural damage, high cost, and difficult to mass produce.
At present, the new energy industry is actively studying solid state battery technology, including Tesla and other well-known enterprises. It is believed that in the near future, solid state batteries will be gradually developed and applied more widely, becoming more efficient and safe new energy 名媛直播.
3、 Qiancheng Power QX3600 launched by Zhengfang Technology
Solid state electric core is adopted, which makes the product safer and more efficient
At present, the Qiancheng Power QX3600 launched by Zhengfang Science and Technology is currently selling well in the market. The battery cell in its core technology uses solid state batteries, which makes this outdoor energy storage power station small in size, light in weight, and high in safety performance.
In addition, due to the solid state battery cell, this portable energy storage power station has not only greatly increased its safety performance, but also enhanced its service life. It can ensure that after 1500 cycles, its capacity is still greater than 80% of the initial capacity. If it is charged and discharged twice a week, it can be used for more than 10 years. If such a portable power supply is put at home, it will not be replaced for ten years, and the power is still surging.
It can be seen that the outdoor energy storage 名媛直播 with solid state batteries as electric cells have better performance, and will also welcome more and more extensive market recognition and growth.
