In recent years, the development of new energy vehicles and domestic smart phones in the mainland has made many achievements that have attracted the world's attention, which can be described as entering the fast lane of high-quality development.
In terms of new energy vehicles, as of 2021, the sales volume of new energy vehicles in mainland China has ranked first in the world for seven consecutive years. According to data from the China Association of Automobile Manufacturers, there are about 5.8 million new energy vehicles in the mainland, accounting for about 50% of the total number of new energy vehicles in the world. The joint venture car and the foreign car have been left far behind, and the curve overtaking has been achieved.
In terms of domestic smart phones, after ten years of unremitting efforts, domestic smart phone brands have risen in an all-round way. Whether it is from the quality, performance, price and other aspects of the qualitative leap, can compete with apple, Samsung and other foreign brands. According to CANALYS data, in the first quarter of 2022, among the top five mobile phone brands in the domestic mobile phone market, domestic mobile phones have occupied four seats, and the market share of domestic mobile phone brands has reached 80%, and Glory and OPPO have surpassed Apple mobile phones and occupied the top and second place in the sales list.
These achievements are not achieved on a whim or on a whim, but on the results of solid technological innovation and progress. Recently, the mainland's battery technology has made successive breakthroughs, or will solve the long-criticized anxiety about the battery life of new energy vehicles and smart phones from the root cause.
What is endurance anxiety?
Battery life anxiety is essentially charging anxiety, whether it is a new energy vehicle or a smart phone, it needs to be charged after a certain period of time. However, as far as the current charging technology is concerned, it is still far from meeting people's needs.
For example, new energy electric vehicles, once there is no electricity, you need to go everywhere to find charging piles, even if you find a charging pile, you may also need to queue up to charge, it is difficult to line up to yourself, you also need to wait for tens of minutes or even hours to fully charge the electricity. After such a toss, you may already be restless and physically and mentally exhausted.
Another example is the smart phone, in fact, it is similar to the new energy electric vehicle, and it takes dozens of minutes to charge the mobile phone once to be full. If you have a mobile phone dependence, these dozens of minutes may make you depressed and live like a year.
So how to solve the problem of battery life anxiety? The author believes that there are two methods, one is to find new charging materials with better performance; the other is to break through the bottleneck of fast charging technology.
Kung Fu pays off. Recently, the mainland has sent three good news in the field of battery technology, and finally achieved a new breakthrough, the following hurry to share with you.
CATL released a new generation of sodium-ion batteries
It is reported that the energy density of this sodium-ion battery cell can reach 160Wh/kg; charging at room temperature for 15 minutes, the power can reach more than 80%; and in the low temperature environment of minus 20 °C, there is still more than 90% of the discharge retention rate.
In terms of cathode materials, the Cataline era adopts Prussian white materials with high gram capacity to rearrange the charge of the material phase structure, which solves the core problem of rapid attenuation of the capacity of Prussian white in the cycle process; in terms of negative electrode materials, The Cataline era has developed a hard carbon material with a unique pore structure, which has the characteristics of high gram capacity, easy de-embedding and excellent circulation.
Compared with lithium-ion batteries, sodium-ion batteries have four major advantages:
1. Abundant reserves.
The content of lithium in the earth's crust is only 0.0065%, while sodium is about 2.36%, and the reserves of sodium are 360 times that of lithium.
2, the cost is low.
(1) Lithium iron phosphate cathode is about 60,000 to 80,000 / ton; while the price of sodium ion compounds is stable and low, only about 250 yuan / ton.
(2) Sodium ion batteries do not need to use rare precious metals such as cobalt and nickel, and sodium ions do not form alloys with aluminum, and can also use aluminum foil that is cheaper than copper foil to do fluid collection, and the material cost will be reduced by about 8% compared with lithium-ion batteries.
3. The energy density is comparable to lithium iron phosphate.
Since the sodium-ion battery has no over-discharge characteristics, the sodium-ion battery is allowed to discharge to zero volts. The energy density of sodium-ion batteries is greater than 100Wh/kg, which is comparable to lithium iron phosphate batteries.
4. High security.
The electrochemical properties of sodium-ion batteries are stable and have high safety. Through needle punching, squeezing, overcharge, over-discharge and other tests, it can be done without fire or explosion. In addition, in the transportation link, zero-volt transportation can be realized, which effectively reduces the transportation risk.
In addition, because sodium-ion batteries can achieve compatibility with lithium-ion battery production equipment and processes in terms of manufacturing processes, the production line can be quickly switched to achieve rapid layout of production capacity. At present, CATL has started the industrialization layout of sodium-ion batteries, and will form a basic industrial chain in 2023.
The semi-solid-state battery developed by Guoxuan High Research will be loaded
At the 11th Science and Technology Conference of Guoxuan Hi-Tech, Zhang Hongli, vice president of the Institute of Industry and Research, said that the ternary and half-solid-state battery with an energy density of 360Wh/kg will achieve mass production this year. Models equipped with semi-solid-state batteries will have a battery capacity of up to 160kWh, a battery life of more than 1,000km, and zero-hundred acceleration of only 3.9s.
So what is a semi-solid-state battery?
A semi-solid battery is a battery in which one side of the electrode does not contain a liquid electrolyte and the other side of the electrode contains a liquid electrolyte. or the mass or volume of the solid electrolyte in the monomer accounts for half of the total mass or volume of the total electrolyte in the monomer.
Semi-solid-state batteries have the following three advantages over traditional liquid lithium-ion batteries:
1. High energy density.
The upper limit of energy density of liquid lithium-ion batteries is recognized as 300Wh/kg, and even 300Wh/kg is only a theoretical value. In fact, domestic pure electric vehicles, the mainstream lithium iron phosphate battery monomer energy density is generally about 160Wh / kg, BYD's second-generation blade battery monomer energy density is 180Wh / kg, ternary lithium battery monomer energy density of about 200Wh / kg.
Lithium iron phosphate batteries
The energy density of solid-state batteries is easy to achieve more than 300 ~ 400wh / kg, and the theoretical energy density is as high as 700Wh / kg, which is 2 times that of lithium batteries.
2. Small size.
In traditional lithium batteries, the separator and electrolyte alone occupy nearly 40% of the volume and 25% of the mass. If replaced by a semi-solid electrolyte, the distance between the positive and negative electrodes can be shortened to a few to a dozen microns, so that the thickness of the battery can be greatly reduced, appearing thin and small.
3. Flexibility.
Semi-solid-state batteries use brittle ceramic materials, even if the thickness is thin to less than millimeters, it can still be bent, and the material is flexible. In addition, the thinness of the semi-solid-state battery also makes the degree of flexibility increased, so that after using the appropriate material packaging, it can withstand hundreds to thousands of bends without decaying performance.
Ceramic materials
The energy density of the semi-solid-state battery of Guoxuan Hi-Tech can reach 2.25 times that of lithium iron phosphate batteries, which is 2 times that of BYD blade batteries, and about 80% higher than the mainstream products of ternary lithium batteries. This means that the battery life can be about doubled at the same battery pack size. Moreover, the performance of the battery system is stronger and the acceleration is faster.
Blade battery
Domestic mobile phone brand realme realizes 150W lightspeed second charge, breaking the ceiling of charging technology
In addition to finding new charging materials with better performance, researchers on the mainland have never given up on the exploration of fast (flash) charging technology. This is not, from the domestic mobile phone brand realme to bring good news, in the recently released real me GT Neo3 mobile phone, its equipped flash charging technology has a new breakthrough, to achieve 150W lightspeed seconds charging, can make the mobile phone 5 minutes charging 50%, 15 minutes can be fully charged. This technology broke the ceiling of charging technology in one fell swoop and achieved the world's first.
Seeing this, some friends may ask, a moment of fast charging, a moment of flash charging, then what is the difference?
Speaking of mobile phone fast charging technology, there are two kinds of mainstream fast charging technology on the market: one is the fast charging technology used by mobile phone manufacturers represented by Huawei and Xiaomi, and the other is the flash charging technology used by mobile phone manufacturers represented by OPPO, vivo and realme.
First of all, fast charging is to speed up charging by increasing the charging voltage and appropriately reducing the charging current. The advantage is that the current is low, the compatibility is strong, and there is no too high requirement for the mobile phone charger and data cable. The disadvantage is that high voltage will produce high heat, causing the phone to heat up, which has a significant impact on battery life.
Speaking of flash charging, contrary to fast charging, it is to speed up charging by reducing the charging voltage and increasing the charging current. The advantage is that the heat is concentrated on the charging head, and the mobile phone heat is lighter and the safety is higher. The disadvantage is that because the current is large, it requires a special charger and data cable, and the cost is higher. But this is not to worry, because when buying a machine, it will generally be equipped with a charger and data cable, and there is no need to spend another money to buy a charger like Apple mobile phones.
Here it is recommended that you recognize the difference between fast charging and flash charging, and the charger should not be mixed as much as possible, otherwise it may lead to a shortened service life of the mobile phone and some unnecessary safety hazards.
The GT Neo3 is equipped with a customized Nanxin semiconductor pump fast charging chip. The new 4:2 high-power charging architecture, dual-cell series structure design and Battery Sense battery cell voltage detection technology are adopted to achieve 150W high-power flash charge with lower loss and lower resistance, and at the same time, temperature control technology is adopted to control the temperature below 43 °C when charging.
As we all know, fast charging and battery life are related, the current common standard in the industry is that the battery after 800 times of complete charge and discharge cycles, the effective capacity of the battery is not less than 80%. However, the GT Neo3's 150W light speed second charge doubles the standard, and the effective capacity of the battery is still not less than 80% after 1600 complete charge and discharge cycles.
Based on the above excellent performance, GT Neo3's 150W light speed second charging technology has also been certified by The German Rheinland Safety Fast Charging, which has an independent charging control chip, with 38 safety protection measures such as charging anomaly detection, one-key power failure, and anti-backfunction circuit design.
In addition to the advanced 150W light speed second charging technology, GT Neo3 is mainly an e-sports game, and is also equipped with a series of black technologies, such as independent display chips, 120Hz smooth speed screen, 1000Hz e-sports control engine, GT mode 3.0, diamond ice core cooling system MAX, etc., and the cost performance is very high, it is 618 in the middle of the year, and there is a preferential strength of up to 300 yuan. Such a mobile phone, even if you forget to charge the mobile phone at night, you can use the time to wash your face and brush your teeth in the morning, which can be said to perfectly solve the problem of battery life anxiety of mobile phone users!
The above three major breakthroughs in battery technology make us more confident and looking forward to the development of new energy vehicles and smart phone technologies in the future, and I believe that in the near future, the problem of battery life anxiety will truly become history and never return.
#realme真我GT Neo3 #