Tesla's Electric Drive System From 5 Seconds to One Second Goal
TapTechNews August 2nd news, in the early hours of this morning Beijing time, the X (Twitter) account TeslaManufacturing announced that currently a new electric drive system is completed in production every 5 seconds. Later, Musk retweeted this post and boasted: One day, Tesla will manufacture an electric drive system every second.
Not long ago on July 31st, Tesla announced the unlocking of the first '10 million' milestone, and the world's 10 millionth electric drive system was offlined at the Shanghai Gigafactory.
The electric drive system is one of the core systems of electric vehicles, mainly consisting of the drive motor, motor controller, and reduction (transmission) gearbox. According to TapTechNews' previous report, Tesla's electric drive system has gone through four generations of technological iterations:
The first-generation electric drive system was applied in Roadster, obtaining the authorization from ACPropulsion to use an asynchronous induction motor as the drive motor, and the controller applied IGBT single-tube parallel technology. It was the earliest developed and had a small delivery volume, and was less known to the world.
The second-generation electric drive system was used in Model S/X, and the controller was changed to a three-dimensional structure, similar to a laminated sandwich structure, with the asynchronous motor and controller arranged symmetrically on the left and right.
The third-generation electric drive system was applied in Model 3/Y, which for the first time equipped with a permanent magnet synchronous motor. Silicon carbide power devices were applied in the controller and the structure design of the controller was changed, making it more compact overall.
The fourth-generation electric drive system optimized the protection of the output three-phase electrical connection, added an infrared temperature sensor; the position of the connector that was previously fixed with screws on the controller is now changed to a one-piece molding process using friction stir welding, further reducing the cost; the motor oil filter housing is integrally cast, and the filter element is built-in and no longer replaceable, etc.