# US 12,595,017 B2 · Electric off-road vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,595,017 B2 - Document ID: US12595017B2 - Status: Granted - Kind: B2 - Application number: 18/090,124 - Filed: 2022-12-28 - Published: 2023-07-27 - Granted: 2026-04-07 - Earliest claimed: 2022-01-25 - Assignees: Zhejiang CFMOTO Power Co., Ltd. - Applicants: Zhejiang CFMOTO Power Co., Ltd. - Inventors: Xiayang Hu; Changjiang Li; Yunqiang Huang; Fuying Cheng; Jiahui Hou - Web page: https://patentgrep.com/patent/US12595017B2 ## CPC - B62K 5/01: Motorcycles with four or more wheels (specially adapted for disabled riders B62K5/003) - B60K 1/04: of the electric storage means for propulsion - B60K 17/16: of differential gearing - B60K 17/22: characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft - B60K 17/354: having separate mechanical assemblies for transmitting drive to the front or to the rear wheels or set of wheels - B60K 17/356: having fluid or electric motor, for driving one or more wheels - B60L 50/64: Constructional details of batteries specially adapted for electric vehicles - B60L 50/66: {Arrangements of batteries} - B62J 43/16: on motorcycles or the like - B62J 43/28: hidden within the cycle frame - B60K 17/04: characterised by arrangement, location or kind of gearing - B60K 2001/0422: {Arrangement under the front seats} - B60Y 2200/12: Motorcycles, Trikes; Quads; Scooters - B60Y 2200/91: Electric vehicles - B60Y 2400/61: Arrangements of controllers for electric machines, e.g. inverters - B62K 2204/00: Adaptations for driving cycles by electric motor - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - B62K: CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - B62J: CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) 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. ### Claim 3 (depends on 2) 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. ### Claim 4 (depends on 2) 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. ### Claim 5 (depends on 4) 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. ### Claim 6 (depends on 4) 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. ### Claim 7 (depends on 4) The electric off-road vehicle of claim 4, wherein the battery pack is arranged in front of the prime mover assembly. ### Claim 8 (depends on 4) 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. ### Claim 9 (depends on 2) 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. ### Claim 10 (depends on 1) 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. ### Claim 11 (depends on 10) 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. ### Claim 12 (depends on 11) 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. ### Claim 13 (depends on 11) 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. ### Claim 14 (depends on 10) 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. ### Claim 15 (depends on 1) 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. ### Claim 16 (depends on 1) 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. ### Claim 17 (depends on 1) 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. ### Claim 18 (depends on 17) 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. ### Claim 19 (depends on 17) The electric off-road vehicle of claim 17, wherein the electric off-road vehicle further comprises a second control assembly. ### Claim 20 (depends on 17) 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.