On June 4, 2020, over a hundred members of the media and industry experts were given on-site access to the FinDreams Battery Factory in Chongqing that produces the BYD Blade Battery. This is the first factory tour that BYD has conducted since it debuted the Blade Battery on March 29, presenting the factory’s intelligent manufacturing capabilities.
Located in the city’s Bishan District, the factory is currently the only production base for the Blade Battery. It possesses a highly demanding production environment and much of BYD’s self-developed Blade Battery production equipment. The factory has a total investment of 10 billion yuan with an annual production capacity of 20GWH.
The nature of the factory’s environment can be seen in the core production process. For example, requirements necessitate that within one cubic meter space, fine particles equivalent to 1/20th of a single hair (or a 5-micron particle, as a hair is 100 microns), cannot exceed 29, reaching the same standards as LCD screen production. The overall allowed humidity is limited to below 1% (the average daily humidity being 60-80%), and the humidity during a core production process cannot exceed 0.05% of the average moisture level. In addition, the temperature is kept constant at 25 degrees Celsius.
According to Sun Huajun, the Vice General Manager of FinDreams Battery, these demanding conditions are a “necessary foundation” to the Blade Battery’s high safety standards.“The nearly one-meter-long pole piece can achieve tolerances of within ±0.3mm, and the accuracy and speed of a single-piece lamination have an efficiency of 0.3s/pcs. This is the first of its kind in the world. This form of lamination comes from BYD’s completely independent development of its equipment and cutting-edge solutions – aspects that are uncopiable,” he said.
The Han EV is BYD’s flagship sedan model slated for launch this June. “BYD’s Han EV is the first electric vehicle equipped with the Blade Battery, possessing a cruising range of 605 km with a single charge,” said Li Yunfei, Vice General Manager of BYD Auto Sales.
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