CN114435106A - Electric drive axle structure for hybrid new energy automobile - Google Patents
Electric drive axle structure for hybrid new energy automobile Download PDFInfo
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- CN114435106A CN114435106A CN202210174228.7A CN202210174228A CN114435106A CN 114435106 A CN114435106 A CN 114435106A CN 202210174228 A CN202210174228 A CN 202210174228A CN 114435106 A CN114435106 A CN 114435106A
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- motor
- drive axle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/04—Combinations of toothed gearings only
- F16H37/042—Combinations of toothed gearings only change gear transmissions in group arrangement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/04—Combinations of toothed gearings only
- F16H37/042—Combinations of toothed gearings only change gear transmissions in group arrangement
- F16H37/046—Combinations of toothed gearings only change gear transmissions in group arrangement with an additional planetary gear train, e.g. creep gear, overdrive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model provides an electric drive axle structure that can be used to hybrid new energy automobile includes: the sun gear of the first planet row is connected with the output shaft of the motor; the first gear is connected with the planet carrier of the first planet row; a second gear engaged with the first gear; an intermediate shaft connected with the second gear; the third gear and the fourth gear can be sleeved on the intermediate shaft in a relatively rotating manner; a gear shift mechanism; the fifth gear and the sixth gear are correspondingly meshed with the third gear and the fourth gear respectively; the differential is connected with a first output half shaft and a second output half shaft; a second planet row; and a third planet row; and the fifth gear and the sixth gear are sleeved on the periphery of the differential shell. The system shortens the axial dimension of the structure, enables the system integration level to be higher, and is applicable to hybrid vehicles with narrow arrangement space.
Description
Technical Field
The invention relates to the field of new energy vehicle transmission, in particular to an electric drive axle structure for a hybrid new energy vehicle.
Background
The driving system of traditional car generally transmits power for the transaxle by engine/motor drive gearbox through the transmission shaft, and along with the continuous development of new energy automobile drive technique, the electric transaxle technique that has high integration, high efficiency and lightweight more and more receives attention, has constantly new technology to break through, and the electric transaxle can be with motor gearbox transaxle three integration an organic whole, reaches the purpose of optimizing efficiency and drive performance. Because the battery technology has no revolutionary breakthrough all the time, and the mileage anxiety of the pure electric vehicle exists all the time, the hybrid power is a better choice at present, but the space of the vehicle chassis is limited, and particularly for the hybrid new energy vehicle, units such as an engine, a battery and the like are also required to be placed besides an integrated electric drive axle, so that higher requirements are put forward on the volume and the structure of the electric drive axle.
Therefore, there is a need to develop an electric drive axle structure for a hybrid new energy vehicle to solve one or more of the above-mentioned technical problems.
Disclosure of Invention
In order to solve at least one of the above technical problems, according to an aspect of the present invention, there is provided an electric drive axle structure for a hybrid new energy vehicle, the electric drive axle structure having two gears, capable of meeting a requirement of a maximum climbing gradient of the vehicle in a low gear and a requirement of a maximum vehicle speed in a high gear, wherein one or two motors are selected as a driving source, the motors are all placed on one side, and a single motor/double motors can share most of the structure, and have a relatively small longitudinal size, a relatively small overall size, and a relatively light system weight.
Specifically, a can be used to hybrid new energy automobile's electric transaxle structure is provided, its characterized in that includes:
a first planetary row, a sun gear of which is connected to an output shaft of the motor;
the first gear is connected with the planet carrier of the first planet row;
a second gear engaged with the first gear;
an intermediate shaft connected with the second gear;
the third gear and the fourth gear can be sleeved on the intermediate shaft in a relatively rotating manner;
a shift mechanism mounted to the counter shaft and switchable between a first position engaged with the third gear and for transmitting power of the counter shaft to the third gear, a neutral position engaged with the fourth gear and for transmitting power of the counter shaft to the fourth gear, and a second position disengaged from the third gear and the fourth gear;
the fifth gear and the sixth gear are correspondingly meshed with the third gear and the fourth gear respectively;
the differential is connected with a first output half shaft and a second output half shaft;
the sun gear of the second planetary row is connected with the first output half shaft, and the planet carrier of the second planetary row is connected with the first wheel; and
a third planet row, a sun gear of the third planet row being connected to the second output half shaft, a planet carrier of the third planet row being connected to the second wheel;
and the fifth gear and the sixth gear are sleeved on the periphery of the differential shell.
According to yet another aspect of the present invention, the differential includes a differential gear and a differential lock.
According to still another aspect of the present invention, the motor is disposed on one side of the first and second output half shafts.
According to yet another aspect of the present invention, the output shaft of the motor, the intermediate shaft, and the first output half shaft are arranged in parallel, and the first output half shaft and the second output half shaft are coaxial and output in opposite directions.
According to yet another aspect of the invention, the first gear is disposed between the motor and the first planetary row.
According to a further aspect of the invention, the first planetary arrangement is disposed between the motor and the first gear.
According to yet another aspect of the present invention, the third gear, the shift mechanism, and the fourth gear are disposed between the motor and the differential case.
According to yet another aspect of the present invention, the differential is disposed within the fifth gear and the sixth gear.
According to yet another aspect of the present invention, a first speed ratio between the fifth and third intermeshing gears is different than a second speed ratio between the sixth and fourth intermeshing gears.
According to yet another aspect of the invention, the motor is comprised of a single motor or dual motors sharing an output shaft.
The invention can obtain one or more of the following technical effects:
1. the output shaft of the motor is directly connected with the planet row speed reducing mechanism, and the structure can use a high-rotating-speed motor to reduce the requirement on the torque of the motor.
2. The vehicle type with the spare longitudinal space and the spare axial space can adopt a single motor structure, and the vehicle type with the spare longitudinal space and the spare axial space can adopt a double motor structure.
3. The front two-stage fixed reduction ratio gear structure is formed by combining a planet row and a dead axle gear, the size of the gear structure is small, and a large reduction ratio can be realized.
4. The gear shifting mechanism is positioned on the intermediate shaft, and can take the torque and the rotating speed into account to influence the gear shifting performance.
5. The differential is positioned in the two three-stage dead axle driven gears, so that the axial size of the structure is shortened, and the system integration level is higher.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of an electric drive axle structure that can be used for a hybrid new energy vehicle according to a preferred embodiment of the present invention.
Fig. 2 is a schematic view of an electric drive axle structure that can be used for a hybrid new energy vehicle according to another preferred embodiment of the present invention.
Detailed Description
The best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings, wherein the detailed description is for the purpose of illustrating the invention in detail, and is not to be construed as limiting the invention, as various changes and modifications can be made therein without departing from the spirit and scope thereof, which are intended to be encompassed within the appended claims.
Example 1
According to a preferred embodiment of the present invention, referring to fig. 1 to 2, there is provided an electric drive axle structure for a hybrid new energy vehicle, characterized by comprising:
a first planet row 03, the sun gear of the first planet row 03 is connected with the output shaft 02 of the motor A;
the first gear 04 is connected with the planet carrier of the first planet row 03;
a second gear 05 engaged with the first gear 04;
an intermediate shaft 06 connected with the second gear 05;
the third gear 07 and the fourth gear 08 are sleeved on the intermediate shaft 06 in a relatively rotatable manner;
a shift mechanism 09 mounted to the counter shaft 06 and switchable between a first position, a middle position, and a second position, the shift mechanism 09 being engaged with the third gear 07 and being used to transmit the power of the counter shaft 06 to the third gear 07 when in the first position, the shift mechanism 09 being engaged with the fourth gear 08 and being used to transmit the power of the counter shaft 06 to the fourth gear 08 when in the second position, the shift mechanism 09 being disengaged from the third gear 07 and the fourth gear 08 when in the middle position;
a fifth gear 10 and a sixth gear 11 which are respectively engaged with the third gear 07 and the fourth gear 08;
a differential to which are connected a first output half shaft 15 and a second output half shaft 16;
a second planetary row 17, the sun gear of the second planetary row 17 being connected to the first output half shaft 15, the planet carrier of the second planetary row 17 being connected to the first wheel 19; and
a third planetary row 18, the sun gear of the third planetary row 18 being connected to the second output half shaft 16, the planet carrier of the third planetary row 18 being connected to a second wheel 20;
the fifth gear 10 and the sixth gear 11 are sleeved on the periphery of the differential case 12.
According to a further preferred embodiment of the invention, the differential comprises a differential gear 13 and a differential lock 14.
According to a further preferred embodiment of the invention, said electric machine a is arranged on one side of said first and second output half shafts 15, 16.
According to a further preferred embodiment of the invention, the output shaft 02 of the electric machine a, the intermediate shaft 06 and the first output half shaft 15 are arranged in parallel, the first output half shaft 15 and the second output half shaft 16 being coaxial and having opposite output directions.
According to a further preferred embodiment of the invention, said first gear 04 is arranged between said electric motor a and the first planetary row 03.
According to a further preferred embodiment of the invention, the first planetary row 03 is arranged between the motor a and the first gear 04.
According to yet another preferred embodiment of the present invention, the third gear 07, the shift mechanism 09, and the fourth gear 08 are disposed between the motor a and the differential case 12.
According to a further preferred embodiment of the invention, the differential is arranged in the fifth gear wheel 10 and the sixth gear wheel 11.
Preferably, when the engaging sleeve of the shifting mechanism is in the middle position, the power on the intermediate shaft 06 is transmitted to the shifting mechanism 09 and then is interrupted, and the power is in the neutral state; when the engaging sleeve of the gear shifting mechanism moves leftwards, the engaging sleeve is engaged with the fourth gear 08, and the power on the intermediate shaft 06 is transmitted to the fourth gear 08 through the gear shifting mechanism 09; when the sleeve of the shift mechanism moves rightward, the sleeve engages with the third gear 07, and the power on the counter shaft 06 is transmitted to the third gear 07 via the shift mechanism 09.
According to yet another preferred embodiment of the present invention, the first speed ratio between the fifth gear 10 and the third gear 07, which mesh with each other, is different from the second speed ratio between the sixth gear 11 and the fourth gear 08, which mesh with each other.
According to yet another preferred embodiment of the invention, the motor consists of a single motor a or dual motors A, B, which share an output shaft. Referring to fig. 2, the first planetary row 03 and the first gear 04 are disposed between the double motors A, B.
According to another preferred embodiment of the present invention, there is provided an electric drive axle structure for a hybrid new energy vehicle, including: the output shaft 02 of the motor A (for single motor)/the motor A and the output shaft 02 of the motor B (for double motors) are directly connected with a planetary row 03 speed reducing mechanism, wherein the sun gear of the planetary row is installed on the motor output shaft 02 and is a power input gear of the planetary row, a gear ring is fixedly installed with an axle housing, and a planet carrier is a power output end, so that primary speed reduction transmission is realized. The planet carrier end is installed second grade dead axle driving gear 04, it should be noted that, gear 04 can install the left end at the planet row, also can install the right-hand member at the planet row, specifically can arrange according to the structure and decide. The second-stage dead axle driving gear 04 is meshed with a second-stage dead axle driven gear 05 arranged on the intermediate shaft 06, and meanwhile, a third-stage dead axle driving gear 07-08 and a gear shifting mechanism 09 are further arranged on the intermediate shaft 06. When the gear shifting mechanism is in the middle position, the gears 07-08 are in an axial rotation free state, and the power on the intermediate shaft 06 cannot be transmitted backwards; when the gear shifting mechanism moves leftwards, a joint sleeve of the gear shifting mechanism is jointed with the gear 08, so that power on the intermediate shaft is transmitted to the three-stage dead axle driving gear 08; when the gear shifting mechanism moves rightwards, an engaging sleeve of the gear shifting mechanism is engaged with the gear 07, so that power on the intermediate shaft is transmitted to the three-stage fixed shaft driving gear 07, and the three conditions can respectively realize the motion models of neutral gear and high-low gear. The three-level dead axle driving gears 07-08 are respectively meshed with three-level dead axle driven gears 10-11 arranged on a differential case 12, and a differential gear 13 and a differential lock 14 are further arranged on the differential case 12. When the differential lock 14 is in an uncoupled state, the differential gear 13 can equally distribute the torque on the differential case 12 to the left half shaft 16 and the right half shaft 15, and the left half shaft and the right half shaft can move at different rotating speeds; when the differential lock 14 is in the engaged state, the differential gear 13 can distribute the torque on the differential case 12 to the left half shaft 16 and the right half shaft 15 as required, and the left half shaft and the right half shaft can move at the same rotation speed. A left planet row 18 speed reducing mechanism is arranged at the end part of the left half shaft 16, wherein a sun gear of the planet row is arranged on the left half shaft 16 and is a power input gear of the left planet row, a gear ring is fixed with an axle housing, and a planet carrier is a power output end and is connected with a left wheel 20, so that four-stage speed reduction of the left wheel 20 is realized; the end part of the right half shaft 15 is provided with a left planet row 17 speed reducing mechanism, wherein a sun gear of the planet row is arranged on the right half shaft 15 and is a power input gear of the right planet row, a gear ring is fixed with an axle housing, and a planet carrier is a power output end and is connected with a right wheel 19, so that four-stage speed reduction of the right wheel 19 is realized.
According to another preferred embodiment of the present invention, there is also provided an electric drive axle structure for a hybrid new energy vehicle, as shown in fig. 1 and 2:
the motor A (for a single motor)/the motor A and the motor B (for double motors) which are arranged in parallel with the axial direction of the drive axle can be arranged at the same horizontal height with the axial direction of the drive axle, and can also be arranged by rotating a certain angle around the axial direction of the drive axle. The power of the motor A (for a single motor)/the motor A and the power of the motor B (for double motors) are transmitted to the primary planet row speed reducing mechanism 03 through the motor output shaft 02, wherein the sun gear of the planet row is installed on the motor output shaft 02 and is a power input gear of the planet row, the gear ring is fixedly installed with the axle housing, and the planet carrier is a power output end to realize primary speed reducing transmission. Second grade dead axle driving gear 04 is installed to above-mentioned planet carrier tip, it should be explained, gear 04 can install the left end at the planet row, also can install the right-hand member at the planet row, and specifically can be according to structural arrangement and decide, and the last power of motor output shaft 02 is arranged reduction gears 03 to second grade dead axle driving gear 04 through the one-level planet, and gear 04 and the second grade dead axle driven gear 05 of installing on jackshaft 06 mesh, and the last power of gear 04 passes through gear 05 and transmits to jackshaft 06, realizes second grade reduction drive. The intermediate shaft 06 is also provided with three-stage fixed shaft driving gears 07-08 and a gear shifting mechanism 09, the gears 07-08 are arranged on the intermediate shaft 06 through bearings, and the gear shifting mechanism 09 is arranged on the intermediate shaft 06 through splines. When the engaging sleeve of the gear shifting mechanism is in the middle position, the gears 07-08 are in an axial free rotation state, the power on the intermediate shaft 06 is transmitted to the gear shifting mechanism 09 and then is interrupted, and at the moment, the power is in a neutral gear state; when an engaging sleeve of the gear shifting mechanism moves leftwards, the engaging sleeve is engaged with the gear 08, power on the intermediate shaft 06 is transmitted to the gear 08 through the gear shifting mechanism 09, the gear 08 is engaged with a three-stage fixed shaft driven gear 11 arranged on a differential case 12, and the power is transmitted to the differential case 12, so that three-stage speed reduction A-gear movement is realized; when the engaging sleeve of the gear shifting mechanism moves rightwards, the engaging sleeve is engaged with the gear 07, power on the intermediate shaft 06 is transmitted to the gear 07 through the gear shifting mechanism 09, the gear 07 is engaged with the three-stage fixed shaft driven gear 10 mounted on the differential case 12, the power is transmitted to the differential case 12, and three-stage speed reduction B-gear movement is achieved. The differential gear case 12 is provided with a differential gear 13 and a differential lock 14 besides the gears 10-11, when the differential lock 14 is in an uncombined state, the differential gear 13 can equally distribute the power on the differential case 12 to a left half shaft 16 and a right half shaft 15, and the differential gear 13 can enable the left half shaft and the right half shaft to realize the motion of transmitting the same torque and different rotating speeds; when the differential lock 14 is in the engaged state, the differential gear 13 can distribute the torque on the differential case 12 to the left half shaft 16 and the right half shaft 15 according to the actual road condition, and the differential gear 13 can make the left half shaft and the right half shaft realize the motion of transmitting different torques with the same rotating speed. A left planet row 18 speed reducing mechanism is arranged at the end part of the left half shaft 16, wherein a sun gear of the left planet row is arranged on the left half shaft 16 and is a power input gear of the left planet row, a gear ring is fixed with an axle housing, a planet carrier is a power output end and is connected with a left wheel 20, power on the left half shaft 16 is transmitted to the left wheel 20 through the left planet row 18, and the left wheel 20 is driven by a motor; the end part of the right half shaft 15 is provided with a right planet row 17 speed reducing mechanism, wherein a sun gear of the right planet row is arranged on the right half shaft 15 and is a power input gear of the right planet row, a gear ring is fixed with an axle housing, a planet carrier is a power output end and is connected with a right wheel 19, power on the left shaft 15 and the right shaft 15 is transmitted to the right wheel 19 through the right planet row 17, and the right wheel 19 is driven by a motor.
The invention can obtain one or more of the following technical effects:
1. the output shaft of the motor is directly connected with the planet row speed reducing mechanism, and the structure can use a high-rotating-speed motor to reduce the requirement on the torque of the motor.
2. The vehicle type with the spare longitudinal space and the spare axial space can adopt a single motor structure, and the vehicle type with the spare longitudinal space and the spare axial space can adopt a double motor structure.
3. The front two-stage fixed reduction ratio gear structure is formed by combining a planet row and a dead axle gear, the size of the gear structure is small, and a large reduction ratio can be realized.
4. The gear shifting mechanism is positioned on the intermediate shaft, and can take the torque and the rotating speed into account to influence the gear shifting performance.
5. The differential is positioned in the two three-stage dead axle driven gears, so that the axial size of the structure is shortened, and the system integration level is higher.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. An electric drive axle structure that can be used to hybrid new energy automobile, its characterized in that includes:
a first planetary row, a sun gear of which is connected to an output shaft of the motor;
the first gear is connected with the planet carrier of the first planet row;
a second gear engaged with the first gear;
an intermediate shaft connected with the second gear;
the third gear and the fourth gear can be sleeved on the intermediate shaft in a relatively rotating manner;
a shift mechanism mounted to the counter shaft and switchable between a first position engaged with the third gear and for transmitting power of the counter shaft to the third gear, a neutral position engaged with the fourth gear and for transmitting power of the counter shaft to the fourth gear, and a second position disengaged from the third gear and the fourth gear;
the fifth gear and the sixth gear are correspondingly meshed with the third gear and the fourth gear respectively;
the differential is connected with a first output half shaft and a second output half shaft;
the sun gear of the second planetary row is connected with the first output half shaft, and the planet carrier of the second planetary row is connected with the first wheel; and
a third planet row, a sun gear of the third planet row being connected to the second output half shaft, a planet carrier of the third planet row being connected to the second wheel;
and the fifth gear and the sixth gear are sleeved on the periphery of the differential shell.
2. The electric drive axle structure applicable to a hybrid new energy vehicle according to claim 1, wherein the differential includes a differential gear and a differential lock.
3. The electric drive axle structure usable with a hybrid new energy vehicle according to claim 2, characterized in that the electric motor is disposed on one side of the first and second output half shafts.
4. The electric drive axle structure applicable to a hybrid new energy vehicle according to any one of claims 1 to 3, wherein the output shaft of the electric motor, an intermediate shaft, and the first output half shaft are arranged in parallel, and the first output half shaft and the second output half shaft are coaxial and have opposite output directions.
5. The electric transaxle structure that can be used for a hybrid new energy vehicle according to claim 4, wherein the first gear is arranged between the motor and the first planetary row.
6. The electric drive axle structure applicable to a hybrid new energy vehicle according to claim 4, wherein the first planetary arrangement is disposed between the motor and the first gear.
7. The electric drive axle structure applicable to a hybrid new energy vehicle according to claim 4, wherein the third gear, the shift mechanism, and the fourth gear are disposed between the motor and the differential case.
8. The electric drive axle structure applicable to a hybrid new energy vehicle according to claim 4, wherein the differential is disposed in the fifth gear and the sixth gear.
9. The electric drive axle structure usable in a hybrid new energy vehicle according to claim 4, characterized in that a first speed ratio between the fifth gear and the third gear that mesh with each other is different from a second speed ratio between the sixth gear and the fourth gear that mesh with each other.
10. The electric drive axle structure applicable to a hybrid new energy vehicle according to claim 4, wherein the motor is composed of a single motor or dual motors, the dual motors sharing an output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210174228.7A CN114435106A (en) | 2022-02-24 | 2022-02-24 | Electric drive axle structure for hybrid new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN115507167A (en) * | 2022-08-02 | 2022-12-23 | 江苏华永复合材料有限公司 | Four-gear power assembly system |
| CN115958946A (en) * | 2023-02-01 | 2023-04-14 | 北京福田戴姆勒汽车有限公司 | Drive axle for vehicle and vehicle having same |
| CN115972896A (en) * | 2022-11-23 | 2023-04-18 | 江苏华永复合材料有限公司 | High-efficiency multi-speed electric drive axle transmission system |
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Application publication date: 20220506 |