
Recently, GAC Aian released safety technology for the magazine battery
system, which not only did the Ningde Times cover up and dare not conduct public
needle testing, but also redefined the safety standard for ternary lithium. It
seems that GAC Aian wants to announce to the industry that if lithium iron
phosphate looks like BYD's "blade", then ternary lithium can only rely on GAC
Aian's "magazine".
Starting from "magazine", "unsafe ternary lithium batteries" have become
history.
As is well known, in the field of power batteries in China, BYD originally
held a good hand, but due to its "self-sufficiency" policy, it not only failed
to "suffocate" other new energy vehicle companies, but also forced Ningde Times
into a unicorn with a market value exceeding 750 billion; Of course, Ningde
Times did not play the arrogance of "Rocket" by relying on the good card of
ternary lithium battery, but let the disillusioned BYD redeem lithium iron
phosphate with "blade battery".
Under a series of twists and turns, power batteries have also experienced
the one-sided situation of lithium iron phosphate and ternary lithium batteries,
and now the current stalemate. All of this is determined by the shortcomings and
exposure of the two mainstream technology routes of batteries. For example,
lithium iron phosphate batteries are widely used in mid to low range vehicle
models due to their longer lifespan and lower cost; However, ternary lithium
batteries are mainly used in mid to high range vehicle models due to their high
energy density and low vehicle power consumption. The most concerning issue
among them is the difference in battery safety performance, as the internal
activity of the Sa Yuan lithium-ion battery is more active, resulting in higher
energy density but also significant unsafe factors.
So, companies related to the ternary lithium battery industry chain are
also conducting research on battery safety technology, and "no fire" battery
technology is the most important and difficult fortress to conquer for battery
safety. GAC Aian took the lead in withstanding the needle prick thermal
diffusion test of the entire battery pack led by Dr. Liu Shiqiang, the chief
expert of the China Automotive Technology Research Center and one of the
drafters of the national battery safety standard, with its magazine battery. On
site, 5 minutes after the thermal accident signal was sent out, the magazine
battery of GAC Aian only briefly smoked, without any fire or explosion
phenomenon; After standing for 48 hours, the voltage dropped to 0V and the
temperature returned to room temperature. After acupuncture, only the punctured
battery cell module lost its thermal control and did not spread to other battery
cells. Open the entire battery pack and observe that the internal structure is
intact. This is the first time in the industry that a complete package of
ternary lithium batteries has been tested without ignition, and a historic
breakthrough has been made in the safety of ternary lithium batteries.
It is understood that the magazine battery of GAC Aian is a systematic
technology specifically designed to enhance the safety of power batteries. It is
a complete set of security technologies that enhance the inherent safety of
battery cells, enhance passive safety, and then actively prevent and control
software. It is also an intelligent security technology that integrates software
and hardware, and has ultra-high defense capabilities. Based on the design
concept of "preventing short circuits within the battery cell, preventing
thermal runaway after short circuits, and preventing thermal spread after
thermal runaway", the magazine battery adopts a design similar to a safety
compartment, which can effectively block the spread of thermal runaway cells.
When abnormal voltage or temperature of the cells are detected, the quick
cooling system of the battery is automatically activated to cool the
battery.
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