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BYD's new blade battery set to redefine EV safety standards 2020-03-30


BYD has officially announced the launch of the Blade Battery, a development set to mitigate concerns about battery safety in 

electric (EV). 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. 


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.



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.

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