Double | Double
The blade is out of sheath, and the magazine is bore. In recent years, the vehicle enterprises have shown the “weapon” in the field of battery safety.
May 20 The peak temperature than the blade battery (lithium lithium iron phosphate) is about 10 degrees, and the industry is optimal.
Why after the needle thorn three yuan lithium, the magazine is also acupuncture phosphate? The “second needle” of the magazine is a strong capacitor’s capacity of consumers, or the “catalyst” of industry battery safety technology? We today, I will have a real reason for everyone to repeat the battery.
The blade battery evokes the industry “battery safety” heat in the acupuncture test
In the past, The acupuncture test was once a designated trial in the mandatory national standard. However, most of the batteries were difficult to pass this test, and before the market development and practical use, Mandatory national standards released on January 1, 2020 GB38031-2020 “Electric Automotive Battery Safety Requirements”, the acupuncture test was removed from the national standard.
However, in the industry, it is still the highest standard for testing battery safety. At present, there are only two cars that have a needle test. Enterprise.
The first family is the “old car company” BYD in the new energy vehicle industry. In March last year, BYD blade battery was officially released, and its substantially lithium iron phosphate battery, but structural innovation, to a certain extent, to a certain extent, to a certain degree of disadvantages with low phosphate energy density.
And, BYD is the first car enterprise that opens the acupuncture test. It can be seen in the experimental video: the blade battery has passed the strict puncture test, compared to ordinary lithium iron phosphate and three yuan lithium. Battery, safer when it is punctured,Will not smoke, do not get fire, peak temperature of 60 degrees.
At this point, the BYD blade battery has no noise, but also pushes the acupuncture test to the countertop, so that consumers know that there is such a stringent test technique for battery safety, but also let the industry re-use the battery. The focus is returning to the “security” field. Among them, Guangzhou Automobile ENA battery safety technology – the magazine battery is particularly attractive.
Three-lithium through acupuncture, establish three yuan lithium battery safety new standard
, the country standard requires no fire within 5 minutes of acupuncture experiment. The BYD blade battery acupuncture test achieved this standard, but it also gave consumers to establish a deviation cognition of “three yuan lithium must have a fire”.
BYD selects a lithium iron phosphate battery having a low energy density than ternary lithium batteries. However, the safety of lithium iron phosphate batteries has been relatively recognized, but the safety of the three-yuan lithium battery is still recognized by the industry. Pain points and difficulties. A large disadvantage of the three-dimensional lithium battery is that the stability is poor, and when it is hit and high temperature, the fire point is low.
At that time, when BYD acupuncture “igniting” three yuan lithium, the battery production giant Ningde era has jumped out of protest, but the acupuncture of Ningde has been widely questioned twice. It is not possible. Reward the Warls of the Public Officer. The biggest imprint left by the “Ningbi dispute” left is: the three yuan lithium is not possible to pass acupuncture test.
Does the three-dimensional lithium battery of the mainstream route be destined to be a loser of the acupuncture test?
The magazine battery is not believed. In March this year, Guangqi Yan first released the magazine battery, and its appearance broke the problem of “three yuan lithium fire”. This three-dimensional (magazine battery) for stepping into the third-party authority, which not only uses 100% SOC full electricity, the upper limit of 8mm steel needle is the most stringent test conditions, but also become the industry The three-dimensional lithium battery needle can’t be stabbed, and the “5 minutes of the national standard” is not a fire, it has achieved a major breakthrough. Since then, the power battery safety field is more than the blade, and there is a magazine. This major breakthrough in the magazine also redefines the standards for battery safety, furtherImprove the threshold of the industry “safe battery”.
“thorn” experiment, refreshing iron phosphate safety new height
“second needle” of the battery, inform the industry and consumers in practice, The magazine is more than three yuan lithium.
On May 20, Guangqi Ean once again released the magazine battery acupuncture test, this acupuncture target is a lithium iron phosphate battery. As mentioned above, the blade battery is also a lithium iron phosphate battery. We can’t help but guess, which are both phosphate needle thorn, magazine batteries and blade batteries that are substantially different?
Before this, let’s first understand this acupuncture experiment. In this trial, Guangqi Ean uses lithium iron phosphate (ordinary battery) to compare the lithium iron chip (magazine battery). The test is still more stringent than the blade needle, the steel needle is 8mm, the battery is 100%, which is the most strict standard of national standard.
Test results show that the voltage drop in the steel needle after the steel needle is pierced in the steel needle, and there is a voltage drop. The temperature rise, the maximum temperature is 329.4 ° C, and there is a smoke phenomenon, which lasts for 16 minutes; lithium iron phosphate (magazine battery) is thorough, the highest temperature is only 51.1 ° C, still 48 hours, monomer The voltage drops to 0V, the temperature is reduced to room temperature, and there is no smoke, no fire and explosion, the battery pack state is stable. Open the battery system housing, its internal structure is intact.
From the test results, the lithium iron phosphate (magazine battery) is only 51.1 ° C, which can be said to refresh the safety and new height of lithium iron phosphate battery, which announced from the blade battery. ” The 60 degree peak temperature “pulled down about 10 degrees, and the industry is optimal. Moreover, the acupuncture test of the magazine is carried out by the expert team of the third party in China, and issued a report, and the test results can not be any bug.
It is visible, not afraid of “true” stab, some is hard strength.
Frequency needle, “end” means far-reaching
Blade out sheath to lay down the industry “first needle”, magazine “continuous thorn twoNeedle. In the industry, it is the only two-two-two-two-to-acne testing, they are not to use tests to become propaganda.
In BYD’s blade battery, it will need The thorn test brought into the public’s field of view, and further optimizes the safety of lithium iron phosphate batteries with a change in the structure, and the technical route of “monomer battery safety” is set up in the blade battery.
Yu Guangzhou In the case of the first acupuncture of the three-dimensional lithium battery or the second acupuncture phosphate. Its core is a battery safety, and it is hoped to verify the battery through the most stringent test. The reliability of safety technology, while the magazine also enhances its “system security technology” positioning, allowing the industry and consumers to recognize the system-level safety technology route in addition to the single-cell power supply route, and the system-level safety technology route.
Since then, GAC Ean has also become the only battery safety system technology in the industry to use three-dimensional lithium and lithium iron phosphate. Let different chemical type batteries are safe, further refreshing the new height of battery safety. 123] 
As mentioned above, the technical route of the blade battery and the magazine battery is different. And the two needles of the magazine battery are also ended. The dispute between lithium and lithium iron phosphate. How do we understand?
The origin of the dispute is known as the current
, the current type of battery is currently equipped with the battery type It is not a three-dimensional lithium battery and a lithium iron phosphate battery.
In 2016, domestic new energy has just started. Because the lithium iron phosphate battery technology is mature, the material cost is cheap and safe, becoming the market at the time The main force. Novinal energy vehicles represented by BYD and Beiqi, etc., mostly using lithium iron phosphate batteries. However, due to the technical limitations, the battery life of the lithium iron phosphate battery will stay within 300 kilometers, and there is no advantage. However,
In 2017, the policy began to force, and the NEDC’s battery subsidies were slightly tightened, and the battery life was higher than 400. The model begins to enjoy the best subsidy. At the same time, Tesla also entered China in 2018, stimulating China’s new energyCar development. Domestic research is in full swing, among which Ningde’s ternary lithium battery has achieved technical breakthroughs in cost control, safety control and battery life. Thus, the three-dimensional lithium battery enters the industry’s field of view. In just three years, the dual lithium, which is higher than the phosphate, and has gradually become the mainstream of the current new energy vehicle power battery.
Today, as the two batteries have gradually achieved breakthroughs, the amount of lithium iron phosphate has gradually increased, and there is a sign of recovery. At present, the three-dimensional lithium battery and lithium iron phosphate batteries are in parallel, we believe that this is normal in the future.
Does the dispute between sending system?
It is inevitable to have a big relationship. When you understand the difference between the two, we can understand the true meaning of the end of the dispute.
The low-temperature performance performance of the three-dimensional lithium battery is better than the phosphate, and the charging speed is faster. And under the same endless mileage, with respect to lithium iron phosphate, its battery energy is more density, so the power is lighter. If the user needs longer life, it is more suitable for low temperature weather, and the electric vehicle with a three-dimensional lithium battery can be selected.
Lithium iron phosphate battery cells are long, and the stability is more durable, and the time is longer. And high temperature resistance, battery performance is not affected by high temperature environment. If the user considers life, the price is cost-effective, the electric vehicle on the lithium iron phosphate battery can be selected.
The two distinguish between the two, however, in practice, we have more considerations or based on battery security, rather than actual scene demand, resulting in the purchase of electric vehicles often “not sincere”. Safety issues have no perfect solutions, and the dispute between the faction is not ended. Let’s talk about the freedom of buying the car.
Who can finalize the dispute between sending?
BYD blade battery, from the structure, in fact, the lithium iron phosphate core is longer so that a single cell is flat, and the blade has a certain similarity. And through the whole package structure optimization, increase the battery loading space, so that the battery pack capacity is improved, so that the battery is improved, the essence is the technology to improve the energy density of the battery, not a battery safety.General technology.
The industry is generally believed that it is difficult to have a big breakthrough due to the limitations of iron phosphate itself. The challenge for blade batteries faces how to continue to increase energy density and anti-low temperature performance. Moreover, only lithium iron phosphate at this stage can be said to be sacrificed is the user’s choice.
Guangqi Yama Battery is a system security technology. Simply, it is placed in the safety cabin similar to the “magazine”, no matter whether the lithium phosphate battery, the three-dimensional lithium battery, or even the super fast charging battery, sponge silicon negative film Different chemical types such as batteries can be mounted on the magazine battery technology. Thus, its system-level security technology route is more vast than the “single cell” route.
It can be said that the acupuncture test is only means, and the magazine battery is verified by verifying ternary lithium (magazine battery) and iron phosphate. The high security of lithium (magazine battery) makes the technical route of battery system safely, and its significance is especially far-reaching.
One, ending the dispute of the faction, let the option return to the user.
It can be said that the magazine “second needle” surface stab is said to lithium iron (magazine battery), and it is “safe pain point”. Also let users become the biggest winner. After all, after the magazine appears, the user can choose according to the actual number of car scenes, whether it is three yuan or phosphate, no more concern.
Second, promoting safety technology development, will prompt the entire industry power battery safety.
The magazine battery can simultaneously improve the safety performance of three yuan lithium and phosphate battery, and have an “system-level safety technology” new route, which has been deeply inspirated on the development of the industry in battery safety. It can be said that the magazine battery has brought progress in the safety technology industry. Based on the comprehensive solution of “safety pain points”, can the industry be put on more energy on other battery technology? The “second needle” of the magazine has brought great imagination in the future of the power battery. 
Acupuncture is just the beginning, bringing more possible possibilities for the user and industry, is the true meaning of the tuning battery ending faction.
Conclusion
Normally, whether it is a magazine battery or a blade battery, there is a spare effort for battery safety. All of this, the final benefit is consumers. As a result, the “second needle” stabbing of the magazine battery is actually a “safe pain point” in the new energy industry, and becomes a “strong intention” of the consumer’s safety. It also provides new ideas and unlimited possibilities for the industry’s comprehensive development of battery safety technology through the argument of the termination system.
After solving the safety pain points of the battery, the new development direction of the new energy automotive industry will be unknown. But we believe that in the frequent acupuncture, we will bring us surprises and confidence in Ean, will still be a strong competitor in the second half. [IDailycar]