Today’s power battery is definitely inseparable from two lithium batteries, one is a three-dimensional lithium battery, two is a lithium iron phosphate battery. In the current new energy vehicle, even the performance of the power battery manufacturer, the performance of the three-dimensional lithium battery is more strong, this is the reason for the high-energy density characteristics of the three-dimensional lithium battery, which can meet the car Factory’s high-end pursuit.
However, the corresponding, advantageous, naturally there is Dash. Trimer lithium battery liquid electrolysis is flammable and explosive, and it is easy to trigger “thermal out-of control” during long-term use. The growth of lithium dendrites in the charging and discharge process can easily puncture the diaphragm, causing battery short circuit, causing safety hazards. Therefore, on the core level, you want to make the three-dimensional lithium battery improve general, and it will inevitably inventory improvement. In March this year, GAC ENA news released the world’s first magazine battery system security technology (referred to as “magazine battery”), the first time, the industry’s three-dimensional lithium battery will not get fire. This is undoubtedly a breakthrough improvement for the safety of the three-dimensional lithium battery. From this node, GAC Ean’s “magazine battery” also officially caussessed the focus of the power battery market.
However, it is apparent that the development goals of Guangqi Eman are not In the three-dimensional lithium battery, it is to do to cover the batteries on major mainstream power batteries, so on May 20th, Guangqi Yan once again released lithium iron lithium iron (magazine battery) acupuncture test, refresh Safety new height of lithium iron phosphate battery.
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In this trial, the test personnel use lithium iron phosphate (ordinary battery) to compare tests, and the phosphate (magazine battery) is compared. At the same time, in test conditions, it is the most strict The harsh international test standard, that is, the most 8mmUnder the conditions of the crude steel needle diameter and 100% SOC, the acupuncture test is performed.
In the experiment, lithium iron phosphate (ordinary battery) is packaged in steel After the needle pincker, there is a significant out of control and fever reaction, the voltage drop, the temperature rise, and the smoke phenomenon, the maximum temperature is even 329.4deg; C, the entire process lasted for 16 minutes. In fact, this is also a common phenomenon of self-igniting on the market, and its danger is imagined. And the lithium iron phosphate (magazine battery) is all inclusive, and the maximum temperature of the battery package is only 51.1deg; C, and the battery pack has been in a safe state, no smoke, fire, explosion and other dangerous phenomena When it is 48 hours, the battery monomer voltage drops to 0V, the temperature is reduced to room temperature, and the battery system housing is opened, and the internal structure is intact.
As will be apparent from the test contrast, phosphoric acid using a magazine battery Iron lithium generally has more excellent safety, even in extreme test environments, it is also possible to meet battery safety needs, which is also the advantage of the magazine battery. But relative, why the three-dimensional lithium battery and lithium iron phosphate battery After using the magazine battery system safety technology, can the safety factor have such a huge improvement?
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Whether it is a ternary lithium battery or a lithium iron phosphate battery, the reason why the self-ignition is caused, which is due to a short circuit inside the battery cell, resulting in an increase in temperature, and the internal reaction of the cell is finally out of control. Spread to the entire battery pack. The magazine battery is done by lifting the thermal stability of the battery itself, the heat insulation between the cell, and the heat dissipation of the battery, and the battery is monitored to solve the battery spontaneous combustion. This is the magazine. Battery solve the first large core of battery safety.
, the second core is the super heat insulation used in the cartoon battery. Battery safety cabin design. The cartoon battery is constructed by a mesh nanopore heat insulating material and a high temperature resistant housing, and finally realizes the heat loss of the three-dimensional lithium battery, and the electrical cell, at the same time, the battery pack The body can temperature 1400 ° C or higher, thereby effectively ensuring the safety of the battery pack.
In addition, the magazine battery also has three-dimensional Speed-cooled system and fifth generation battery management system capable of achieving full-time control. Among them, the three-dimensional quick-cooling system enables heat dissipation area to increase by 40%, heat dissipation efficiency is increased by 30%, effectively prevent thermal spread. The fifth-generation battery management system can realize 10 24-weather data acquisition per second, and the battery state is monitored by 100 times compared to the previous generation system.
According to the technical, the set of magazines in Guangqi Ean The battery is not “focused” in BYD, in practice, it is more like a security system that can be applied to different battery structures to maximize the safety of the battery. This also means that the high applicability of the magazine battery, whether it is a three-dimensional battery or a lithium iron phosphate battery to ensure its excellent safety, this is undoubtedly a good time for the electric vehicle industry that is currently challenged by the current safety performance. s solution.
[123 ] In fact, for car companies, it is necessary to choose a three-dimensional lithium battery or a lithium iron phosphate battery. This problem is more tangled. The lithium iron phosphate battery has a longer life and low cost.The three-dimensional lithium battery is high in energy, and the electricity consumption is low, but it will be lacking in security.
However, with the launch of the cartoon battery, not only Safety issues are alleviated to a certain extent. At the same time, for the lower cost of lithium iron phosphate batteries, this also means that there is a problem with the probability of problems in its own applications. However, under the blessing of the magazine battery, the safety of lithium iron phosphate batteries is also expected to be controlled, so in the market, the emergence of the magazine battery is undoubtedly satisfied with the security needs of our powers.
(Image source network, intrusion)