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Tesla Model 3 Power Train Disasembly

来源: 发布时间:2020/09/10点击数:1602

Introduction 

Outstanding performance of Tesla Model 3 has been fueling tremendous interest in EV/HEV engineering community. Thanks to Ingineerix’s videos, we are able to see the beauty underneath now! 

To take a closer look at the technologies used, we have extracted the most important frames from the videos. All key components mentioned in the videos are labeled on the pictures. 

The videos didn’t point out the circuit topologies used. The following topologies are listed based on our best understanding:

  1. Inverter:SiC-based three-half-bridge traditional inverter( not a 3-level one)

  2. Traction Motor: Permanent magnet switched reluctance motor

  3. PFC of OBC: SiC-based three-half-bridge boost converter

    (Not a Vienna rectifier, since the output caps were not arranged in a voltage divider. Another reason is that only traditional 3-phase PFC can take single phase input)

  4. DC/DC of OBC:  three-phase LLC (with very little output caps )

  5. 12V battery charger:  single-phase LLC

Main Spec and Devices Used

The inverter is part of the drive unit and it takes up to 500 amps of 400 volt DC power from the battery and makes 3-phase AC power for the motor. Maximum output power: 300kW.  Battery: 80kWh .Here is the list of major components: 

  • SiC  FETS: ST GK026 (24) 

  • Gate Drivers: STGAP1AS (6) 

  • MCU: TI TMS320F28377DPTPQ 

  • Resolver Amp: ON Semi TCA0372BDW 

  • Temp Amp: TI LMV844 

  • EEPROM: Microchip 25LC256E 

  • CAN Transceiver: TI SN65HVD1040A (2) 

  • LIN Transceiver: NXP TJA1021 

  • HV Sense: Broadcom ACPL-C87BT-000E 

  • DC-DC Power: Infineon TLF35584QVVS2 

  • DC-DC Transformer: TDK VGT22EPC-222S6A12

Here is an image showing how the SiC MOSFETs are mounted to the cold plate and how they are connected:

  • https://ibb.co/dfvktz 

 Here is the internal structure: 

  • https://ibb.co/cphemK 

Ingineerix videos: 

  • https://www.youtube.com/watch?v=l6dV2re3rtM

  • https://www.youtube.com/watch?v=3ARHdRwfxjY 

  • https://www.youtube.com/watch?v=m4eQ7nN_Lwo   https://www.youtube.com/watch?v=ANLPPKRwiyQ 

Tesla Model 3 - Inverter

Tesla Model 3- Driver Unit 

Tesla Model 3 – PCS ( OBC + DC/DC) 20kW