BYD's New Blade Battery Set to Redefine EV Safety Standards
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BYD’S NEW BLADE BATTERY SET TO REDEFINE EV SAFETY STANDARDS
Today, BYD officially announced the launch of the Blade Battery, a
development set to mitigate concerns about battery safety in
electric vehicles.
At an online launch event themed “The Blade Battery – Unsheathed to
Safeguard the World”, Wang Chuanfu, BYD Chairman and President, said
that the Blade Battery reflects BYD’s determination to resolve
issues in battery safety while also redefining safety standards for
the entire industry.
BYD highlighted a video of the Blade Battery successfully passing a
nail penetration test, which is seen as the most rigorous way to
test the thermal runaway of batteries due to its sheer difficulty.
“In terms of battery safety and energy density, BYD’s Blade Battery
has obvious advantages,” said Professor Ouyang Minggao, Member of
the Chinese Academy of Sciences and Professor at Tsinghua
University.
The Blade Battery has been developed by BYD over the past several
years. The singular cells are arranged together in an array and then
inserted into a battery pack. Due to its optimized battery pack
structure, the space utilization of the battery pack is increased by
over 50% compared to conventional lithium iron phosphate block
batteries.
BYD BLADE BATTERY PACK
While undergoing nail penetration tests, the Blade Battery emitted
neither smoke nor fire after being penetrated, and its surface
temperature only reached 30 to 60°C. Under the same conditions, a
ternary lithium battery exceeded 500°C and violently burned, and
while a conventional lithium iron phosphate block battery did not
openly emit flames or smoke, its surface temperature reached
dangerous temperatures of 200 to 400°C. This implies that EVs
equipped with the Blade Battery would be far less susceptible to
catching fire – even when they are severely damaged.
The Blade Battery also passed other extreme test conditions, such as
being crushed, bent, being heated in a furnace to 300°C and
overcharged by 260%. None of these resulted in a fire or explosion.
He Long, Vice President of BYD and Chairman of FinDreams Battery
Co., Ltd., covered four distinct advantages of the Blade Battery
including a high starting temperature for exothermic reactions, slow
heat release and low heat generation, as well as its ability to not
release oxygen during breakdowns or easily catch fire.
In the past few years, many EV manufacturers have fallen into a
competition for ever-greater cruising range. When the range becomes
the prime factor to consider, this focus is then transferred to
power battery makers, leading to unreasonable pursuits of “energy
density” in the battery industry. It is due to this unpractical
focus on “energy density” that safety has been sidelined from power
battery development. BYD’s Blade Battery aims to bring battery
safety back to the forefront, a redirection from the industry’s
tenuous focus on this crucial aspect.
BYD Han EV
“Today, many vehicle brands are in discussion with us about
partnerships based on the technology of the Blade Battery,” said He
Long. He added that BYD will gladly share and work with global
partners to achieve mutually beneficial outcomes for all industry
players.
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