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IT Home reported on August 1 that Tesla posted a Weibo yesterday (July 31) announcing the unlocking of the first "10 million" milestone.The world's 10 millionth electric drive system rolled off the production line at the Shanghai Super Factory。

Tesla officials said on Weibo: "Tesla has redefined the electric drive system, developing and producing it from scratch. With more than 10 million powerful "hearts", every Tesla model is a performance car. Thanks to the support and companionship of more than 6 million car owners, let us accelerate the world's transition to sustainable energy together."

The electric drive system is one of the core systems of electric vehicles, mainly composed of drive motors, motor controllers and speed reducers. IT Home quoted the "Electric Vehicle Thousands of People's Conference" as saying that Tesla's electric drive system has gone through four generations of technology iterations:

• The first generation of electric drive system was used in Roadster. It was authorized by AC Propulsion to use asynchronous induction motor as the drive motor. The controller used IGBT single-tube parallel technology. It was developed first and delivered in small quantities, so it is little known to the world.

• The second-generation electric drive system is used in Model S/X. The controller is changed to a three-dimensional structure, similar to a stacked sandwich structure, and the asynchronous motor and controller are arranged symmetrically on the left and right.

• The third-generation electric drive system is used in Model 3/Y. It is equipped with a permanent magnet synchronous motor for the first time. Silicon carbide power devices are used in the controller, and the structural design of the controller is changed, making it more compact overall.

• The fourth-generation electric drive system optimizes the protection of the output three-phase electrical connections and adds an infrared temperature sensor; the connector positions on the controller that were previously fixed with screws are now replaced with an one-piece molding process using stirring welding, further reducing costs; the motor oil filter housing is integrally cast, and the filter element is built-in and is no longer replaceable, etc.