In the past two years, spontaneous combustion incidents of electric vehicles have occurred frequently, and everyone has focused on the safety of power batteries, and now, with the increasing popularity of new energy models, everyone's attention to the safety technology of batteries has increased a lot. From the current market point of view, many car companies have launched independently developed battery safety technology, such as the recent Great Wall Motors officially announced that its own Dayu battery technology will never catch fire and never explode.
In June this year, Great Wall Motors officially released the Dayu battery, and in September, it interpreted the battery technology for the first time, which used a variety of technical means such as heat insulation and fire extinguishing to process the runaway energy, and quickly cooled out in the form of smoke, and the temperature was lower than 100 ° C, so as to ensure that "never catch fire, never explode".
Of course, Great Wall Motors also tested the Dayu battery, but did not choose the most stringent needle prick test, but chose the same heating method that meets the national regulations for thermal runaway triggering.
From this previous test, Great Wall Motors is located in the center of the dual battery heating to a thermal runaway state, the test occurred 3 times in a row multiple cells thermal runaway, the temperature reached a maximum of 1037 ° C, the entire battery pack did not catch fire and explode. It also fully proves that Great Wall Motors' Dayu battery has unparalleled safety.
As we all know, the problem of new energy vehicle fire batteries is a major incentive, if the Dayu battery is really as the Great Wall Motors announced that it will never catch fire and never explode, it can also be regarded as a leap forward for domestic brands on the road of developing new energy.
Of course, in addition to the surprise of The Great Wall Motor's Dayu battery, there are also byddy car blade batteries and GAC Aean's magazine batteries.
Among them, BYD's blade battery was released in March this year, the earliest battery technology in several domestic brands to enter the market, it passed the industry recognized as the most stringent detection method for battery cell safety - "needle penetration test", so that there is no open flame after penetration, or even no smoke, the temperature on the surface of the battery is only about 30-60 ° C, the egg on the surface of the battery has no change, and it is still in a flowable liquid state.
It can be said that BYD's blade battery is completely rid of the nightmare of "thermal runaway" that may occur in traditional power batteries. At present, blade batteries have been applied to BYD's models on a large scale and are deeply recognized by consumers.
GAC Aean's magazine battery has also undergone acupuncture experiments, the experimental results are: after the whole package is stabbed, the maximum temperature is only 51.1 degrees Celsius, after 48 hours of stationary, the monomer voltage drops to 0 volts, the temperature drops to room temperature, and there is no smoke, no fire and explosion, and the battery pack is stable. Open the battery system housing and the internal structure is intact.
It can be said that GAC Aean's magazine battery has also refreshed the new height of lithium iron phosphate battery safety. Today, aion y equipped with magazine batteries has a fairly excellent market performance in the market, and in the past 10 months, aion y's bicycle order volume exceeded 10,000 units, ranking first in the market segment, which is enough to reflect its recognition in the market.
Write at the end
Nowadays, whether it is the Dayu battery of Great Wall Motors or the blade battery of BYD, or the magazine battery of GAC Aean have solved the problem of battery pack fire and explosion, and have passed extremely strict tests, which is enough to show that in the field of battery safety, the technology of our domestic brands has reached the point of pure fire. In the future, the development of the pure electric vehicle industry and the development of the new energy automobile industry will all play an indispensable role.