BYD today formally launched the Blade Battery, a product aimed at easing worries regarding battery safety in electric vehicles.
Wang Chuanfu, BYD Chairman and President, stated at an online launch event titled “The Blade Battery – Unsheathed to Safeguard the World” that the Blade Battery shows BYD’s commitment to resolving battery safety challenges while also redefining industry safety standards.
BYD demonstrated a video of the Blade Battery successfully performing a nail piercing test, which is considered the most severe technique for evaluating battery thermal runaway due to its difficulty. “In terms of battery safety and energy density, BYD’s Blade Battery has clear advantages,” stated Professor Ouyang Minggao, a member of the Chinese Academy of Sciences and a Tsinghua University professor.
BYD spent several years developing the Blade Battery. The individual cells are stacked in an array and then placed in a battery pack. The battery pack’s space usage is boosted by more than 50% when compared to ordinary lithium iron phosphate block batteries thanks to its optimised structure.
BYD Blade Battery Pack
During nail penetration tests, the Blade Battery generated no smoke or fire, and its surface temperature reached only 30 to 60°C. Under the same conditions, a ternary lithium battery surpassed 500°C and violently burnt, but a standard lithium iron phosphate block battery did not overtly produce flames or smoke, its surface temperature reached dangerous levels of 200-400°C. This suggests that EVs outfitted with the Blade Battery will be significantly less likely to catch fire, even if they are severely damaged.
Other rigorous test conditions that the Blade Battery passed included being crushed, bent, heated in a furnace to 300°C, and 260% overcharged. Neither of these caused a fire or an explosion.
He Long, Vice President of BYD and Chairman of FinDreams Battery Co., Ltd., discussed four key benefits of the Blade Battery, including a high starting temperature for exothermic reactions, slow heat release and low heat generation, and the ability to not release oxygen during breakdowns or catch fire easily.
In recent years, many electric vehicle manufacturers have battled to extend the cruising range. When range becomes the most critical factor to consider, the focus moves to power cell producers, resulting in an excess of “energy density” in the battery industry. Because of the impractical emphasis on “energy density,” safety has been overlooked in the development of power batteries. BYD’s Blade Battery aims to return battery safety to the forefront, reversing the industry’s delicate emphasis on this important feature.
“Today, many vehicle brands are in discussion with us about partnerships based on the technology of the Blade Battery,” he said. He went on to say that BYD will gladly share and collaborate with worldwide partners to create mutually beneficial results for all industry participants.
The Blade Battery will power BYD’s flagship sedan, the Han EV, which will be released in June. The new model will lead the brand’s Dynasty Family, with a cruising range of 605 kilometres and 0 to 100 km/h acceleration in 3.9 seconds.
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