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1. WO2020112798 - ENSEMBLE DE GROUPE MOTOPROPULSEUR DE VÉHICULE ÉLECTRIQUE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

What is claimed is:

1. A drivetrain system comprising:

an I shield;

a first motor;

a second motor;

a first A-shield affixed to the first motor and the I-shield;

a second A-shield affixed to the second motor and the I-shield; a first gearset comprising:

a first motor shaft of the first motor;

a first motor gear affixed to the first motor shaft;

a first intermediate shaft;

a first wheel gear affixed to the first intermediate shaft and engaged with the first motor gear;

a first pinion gear affixed to the first intermediate shaft;

a first drive shaft;

a first drive gear affixed to the first drive shaft and engaged with the first pinion gear;

three and only three motor bearings arranged co-linearly and coupled to the first motor shaft; and

two intermediate bearings arranged co-linearly and coupled to the intermediate shaft.

2. The drivetrain system of claim 1, further comprising a first horseshoe shaped bearing retention plate affixed to the first A-shield, wherein:

the three motor bearings comprise a mid-bearing positioned in a recess of the first A-shield; and

the first horseshoe-shaped bearing retention plate is configured to maintain the position of the mid-bearing in the recess.

3. The drivetrain system of claim 2, wherein a first wheel gear is positioned axially adjacent to the mid-bearing and in an opening of the first horseshoe-shaped bearing retention plate.

4. The drivetrain system of claim 1, wherein:

the first motor shaft comprises a motor axis;

the first intermediate shaft comprises an intermediate axis;

the first drive shaft comprises a drive axis;

the motor axis, intermediate axis, and drive axis define a shaft angle; and the shaft angle is greater than 50 degrees.

5. The drivetrain system of claim 4, wherein the shaft angle is approximately 60 degrees.

6. The drivetrain system of claim 4, wherein the shaft angle is greater than 60 degrees.

7. The drivetrain system of claim 1, further comprising:

a second gearset comprising:

a second motor shaft of the second motor;

a second motor gear affixed to the second motor shaft;

a second intermediate shaft;

a second wheel gear affixed to the second intermediate shaft and engaged with the second motor gear;

a second pinion gear affixed to the second intermediate shaft;

a second drive shaft;

a second drive gear affixed to the second drive shaft and engaged with the second pinion gear;

three and only three motor bearings arranged co-li nearly and coupled to the second motor shaft; and

two intermediate bearings arranged co-linearly and coupled to the second intermediate shaft.

8. The drivetrain system of claim 1, wherein the drivetrain system comprises a modular system capable of being used as a front drivetrain system and a rear drivetrain system.

9. The drivetrain system of claim 8, wherein:

the drivetrain system comprises a first orientation as the front drivetrain system;

the drivetrain system comprises a second orientation as a rear drivetrain system; and

the second orientation is rotated 180 degrees about a vertical axis relative to the first orientation.

10. The drivetrain system of claim 9, wherein:

the drivetrain system comprises a first gear orientation as the front drivetrain system; and

the drivetrain system comprises a second and opposite gear orientation as the rear drivetrain system.

11. The drivetrain system of claim 1, further comprising:

a first inverter core;

a second inverter core; and

a lid configured to house the first inverter core and the second inverter core, wherein the first and second inverter cores are modular.

12. The drivetrain system of claim 1, wherein the lid comprises an opening configured to receive a top cover and provide access to power electronics components.

13. The drivetrain system of claim 1, wherein the two intermediate bearings comprise an inner bearing and an outer bearing, and wherein the outer bearing is arranged axially inward of an axially outer portion of the first wheel gear.

14. An electric vehicle, comprising:

a first drivetrain system, comprising:

a first I shield;

a first motor;

a second motor;

a first A-shield affixed to the first motor and the first I-shield;

a second A-shield affixed to the second motor and the first I-shield; a first gearset comprising:

a first motor shaft of the first motor;

a first motor gear affixed to the first motor shaft;

a first intermediate shaft;

a first wheel gear affixed to the first intermediate shaft and engaged with the first motor gear;

a first pinion gear affixed to the first intermediate shaft;

a first drive shaft;

a first drive gear affixed to the first drive shaft and engaged with the first pinion gear;

three and only three motor bearings arranged co-linearly and coupled to the first motor shaft; and

two intermediate bearings arranged co-linearly and coupled to the first intermediate shaft; and

a second drivetrain system, comprising:

a second I shield;

a third motor;

a fourth motor;

a third A-shield affixed to the third motor and the second I-shield; a fourth A-shield affixed to the fourth motor and the second I-shield; a second gearset comprising:

a second motor shaft of the third motor;

a second motor gear affixed to the second motor shaft;

a second intermediate shaft;

a second wheel gear affixed to the second intermediate shaft and engaged with the second motor gear;

a second pinion gear affixed to the second intermediate shaft; a second drive shaft;

a second drive gear affixed to the second drive shaft and engaged with the second pinion gear;

three and only three motor bearings arranged co-linearly and coupled to the second motor shaft; and

two intermediate bearings arranged co-linearly and coupled to the second intermediate shaft.

15. The electric vehicle of claim 14, wherein:

the first drivetrain system comprises a front drivetrain system; and

the second drivetrain system comprises a rear drivetrain system.

16. The electric vehicle of claim 15, wherein:

the front drivetrain system comprises a first orientation;

the rear drivetrain system comprises a second orientation; and the second orientation is rotated 180 degrees about a vertical axis relative to the first orientation.

17. The electric vehicle of claim 16, wherein:

the front drivetrain system comprises a first gear orientation; and the rear drivetrain system comprises a second and opposite gear orientation from the front drivetrain system.

18. The electric vehicle of claim 14, further comprising a first horseshoe shaped bearing retention plate affixed to the first A-shield, wherein:

the three motor bearings of the first drivetrain system comprise a mid-bearing positioned in a recess of the respective A-shield; and

the first horseshoe-shaped bearing retention plate is configured to maintain the position of the mid-bearing in the recess; and

a first wheel gear is positioned axially adjacent to the mid-bearing and in an opening of the first horseshoe-shaped bearing retention plate.

19. The electric vehicle of claim 14 wherein each of the first drivetrain system and second drivetrain system comprises:

a first inverter core;

a second inverter core; and

a lid configured to house the first inverter core and the second inverter core, wherein the first and second inverter cores are modular.

20. The electric vehicle of claim 19, wherein the lid of each of the first drivetrain system and the second drivetrain system comprises an opening configured to receive a top cover and provide access to power electronics.