Electric off-road vehicle

Patent metadata

Field	Value
Publication number	US-12595017-B2
Application number	US-202218090124-A
Country	US
Kind code	B2
Filing date	Dec 28, 2022
Priority date	Jan 25, 2022
Publication date	Apr 7, 2026
Grant date	Apr 7, 2026

Abstract

An electric off-road vehicle includes a drive assembly including an electric motor; wheels including front wheels and rear wheels; a frame assembly on which the electric motor arranged; a battery pack providing electric energy for the electric motor; and a drive train including a drive axle assembly and a drive shaft. The drive shaft is connected between the electric motor and the drive axle assembly. The electric motor transmits a torque to at least part of the drive axle assembly through the drive shaft, and the drive shaft is positioned below the battery pack.

First claim

What it is claimed is:

1 . An electric off-road vehicle comprising:
a prime mover assembly comprising at least a first electric motor; a plurality of wheels comprising front wheels and rear wheels; a frame assembly on which the first electric motor is arranged; a battery pack providing electric energy for the first electric motor; and a vehicle cover at least partially arranged on the frame assembly; wherein the frame assembly comprises a front frame assembly and a rear frame assembly,
the front frame assembly and the rear frame assembly are both provided with connection brackets above a midheight of the front and rear frame assemblies, the battery pack is connected to the front frame assembly and the rear frame assembly as an entirety by the connection brackets so as to be able to transmit loads above the midheight of the front and rear frame assemblies between the front frame assembly and the rear frame assembly through the connection brackets and battery pack, and with no frame structure above the midheight of the front and rear frame assemblies extending past the battery pack to connect the front frame assembly to the rear frame assembly.

2 . The electric off-road vehicle of claim 1 , further comprising:
a drive train comprising:
a front drive axle assembly;
a rear drive axle assembly; and
a drive shaft connected between the electric motor and at least one of the front and rear drive axle assemblies, the electric motor being capable of transmitting torque to the front and rear drive axle assemblies including transmitting torque through the drive shaft, and the drive shaft being positioned below the battery pack.

3 . The electric off-road vehicle of claim 2 , wherein the drive train further comprises a gearbox having a gearbox output gear, and the drive shaft is provided with a drive shaft input gear meshed with the gearbox output gear.

4 . The electric off-road vehicle of claim 2 , wherein the drive shaft, is part of a drive shaft assembly, a front end of the drive shaft assembly is provided with a front bevel gear meshed with the front drive axle assembly, and a rear end of the drive shaft assembly is provided with a rear bevel gear meshed with the rear drive axle assembly.

5 . The electric off-road vehicle of claim 4 , wherein the front drive axle assembly comprises a front differential having a front differential input bevel gear meshed with the front bevel gear of the drive shaft, and wherein the rear drive axle assembly comprises a rear differential having a rear differential input bevel gear meshed with the rear bevel gear of the drive shaft.

6 . The electric off-road vehicle of claim 4 , further comprising at least one seat, wherein the battery pack is arranged at least partially under the seat and between the front drive axle assembly and the rear drive axle assembly.

7 . The electric off-road vehicle of claim 4 , wherein the battery pack is arranged in front of the prime mover assembly.

8 . The electric off-road vehicle of claim 4 , wherein the electric off-road vehicle further comprises a transfer case connected between the front drive axle and the electric motor for controlling the connection and disconnection between the front drive axle and the electric motor.

9 . The electric off-road vehicle of claim 2 , wherein the bottom of the battery pack defines an inverted U-shaped groove extending longitudinally, and wherein the drive shaft is at least partially arranged within the inverted U-shaped groove.

10 . The electric off-road vehicle of claim 1 , further comprising:
a drive train comprising a drive shaft and a rear drive axle assembly transmitting torque from the prime mover assembly to the plurality of wheels; wherein the drive shaft defines a drive shaft axis and the rear drive axle assembly receives torque about a rear drive axle assembly input axis, with the drive shaft axis being offset relative to the rear drive axle assembly input axis, and wherein the drive shaft is at least partially arranged below the battery pack.

11 . The electric off-road vehicle of claim 10 , wherein the drive train further comprises a front drive axle assembly driven by the drive shaft so as to drive the front wheels.

12 . The electric off-road vehicle of claim 11 , wherein the front drive axle assembly is gear meshed to the drive shaft, so as to deliver torque from the drive shaft to the front drive axle assembly.

13 . The electric off-road vehicle of claim 11 , wherein the front drive axle assembly receives torque about a front drive axle assembly input axis, with the drive shaft axis being offset relative to the front drive axle assembly input axis.

14 . The electric off-road vehicle of claim 10 , wherein the bottom of the battery pack defines an inverted U-shaped groove, the drive shaft being at least partially arranged in the inverted U-shaped groove.

15 . The electric off-road vehicle of claim 1 , wherein an accommodation space is defined between the front frame assembly and the rear frame assembly, and the battery pack is at least partially arranged within the accommodation space.

16 . The electric off-road vehicle of claim 1 , wherein the battery pack comprises a battery case and a plurality of batteries closely arranged inside the battery case, and the battery case is connected to the connection brackets.

17 . The electric off-road vehicle of claim 1 , further comprising a front drive axle assembly and a rear drive axle assembly, with the first electric motor arranged on the front frame assembly for driving the front drive axle assembly, and further comprising a second electric motor arranged on the rear frame assembly for driving the rear drive axle assembly.

18 . The electric off-road vehicle of claim 17 , wherein the electric off-road vehicle further comprises a first control assembly at least arranged above at least one of the first drive motor and the second drive motor.

19 . The electric off-road vehicle of claim 17 , wherein the electric off-road vehicle further comprises a second control assembly.

20 . The electric off-road vehicle of claim 17 , wherein the battery pack is positioned between the front drive axle assembly and the rear drive axle assembly.

Assignees

• Zhejiang Cfmoto Power Co Ltd

Inventors

• Hu Xiayang
• Li Changjiang
• Huang Yunqiang
• Cheng Fuying
• Hou Jiahui

Classifications

• B60K17/356

  having fluid or electric motor, for driving one or more wheels · CPC title

• B60K17/354

  having separate mechanical assemblies for transmitting drive to the front or to the rear wheels or set of wheels · CPC title

• B60K17/22

  characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft · CPC title

• B60K2001/0422

  Arrangement under the front seats · CPC title

• B60K17/16

  of differential gearing · CPC title