CN113561748A - Electric drive axle system - Google Patents
Electric drive axle system Download PDFInfo
- Publication number
- CN113561748A CN113561748A CN202110942560.9A CN202110942560A CN113561748A CN 113561748 A CN113561748 A CN 113561748A CN 202110942560 A CN202110942560 A CN 202110942560A CN 113561748 A CN113561748 A CN 113561748A
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- Prior art keywords
- gear
- output
- shaft
- synchronizer
- electric drive
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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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
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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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
An electric drive axle system is provided, comprising: a first input unit and a second input unit; the intermediate shaft is sleeved on the first output half shaft in a relatively rotating manner; a countershaft gear connected to a first end of the countershaft and engaged with the first parallel shaft gears of the first and second input units, respectively; the first planet row comprises a first sun gear, a first planet gear, a first gear ring and a first planet carrier, and the first sun gear is connected to the second end of the intermediate shaft; and the differential mechanism comprises a differential mechanism shell, a first output end and a second output end, wherein the differential mechanism shell is connected with the first planet carrier, the first output end is connected with the first output half shaft, and the second output end is connected with the second output half shaft. The requirement of large reduction ratio and unpowered interruption gear shifting can be realized, the double-motor external mode is adopted for arrangement, the size of a single motor can be reduced, and the motor is convenient to maintain.
Description
Technical Field
The invention relates to the field of machinery and vehicle transmission, in particular to an electric drive axle system.
Background
Because the electric drive axle system is influenced by the space of the drive axle, the electric drive axle system is generally made into a transmission structure with a fixed reduction ratio, which can influence the operation efficiency of the motor and is difficult to make the motor in a high-efficiency operation range in a large rotating speed range. At present, the electric drive axle can cause power interruption in the gear shifting process, and particularly for a vehicle with a single drive axle, the power interruption on an uphill slope can cause psychological pressure to a driver, so that potential safety hazards exist.
Accordingly, there is a need for an electric drive axle system that solves one or more of the problems set forth above.
Disclosure of Invention
In order to solve at least one of the above technical problems, according to an aspect of the present invention, an electric drive axle system is provided, which employs a dual-motor and dual-synchronizer structure, and can provide two gears, each of the motors can operate independently, and when one of the motors shifts gears, the other motor can continuously provide power, so that the power for shifting gears is not interrupted. In particular, the amount of the solvent to be used,
an electric drive axle system is provided, characterized by comprising:
a first input unit and a second input unit each including: an input shaft connected to the first motor; the first output gear can be sleeved on the input shaft in a relatively rotating manner; the second output gear can be sleeved on the input shaft in a relatively rotating manner; a synchronizer gear connected to the input shaft; a synchronizer selectively connecting and disconnecting the synchronizer gear with the first output gear and the second output gear; the two ends of the parallel shaft are respectively connected with a first parallel shaft gear and a second parallel shaft gear, the first parallel shaft gear is meshed with the first output gear, and the second parallel shaft gear is meshed with the second output gear;
the intermediate shaft is sleeved on the first output half shaft in a relatively rotating manner;
a countershaft gear connected to a first end of the countershaft and engaged with the first parallel shaft gears of the first and second input units, respectively;
the first planet row comprises a first sun gear, a first planet gear, a first gear ring and a first planet carrier, and the first sun gear is connected to the second end of the intermediate shaft; and
the differential mechanism comprises a differential mechanism shell, a first output end and a second output end, wherein the differential mechanism shell is connected with the first planet carrier, the first output end is connected with the first output half shaft, and the second output end is connected with the second output half shaft.
According to yet another aspect of the present invention, the first ring gear is coupled to the axle housing.
According to yet another aspect of the present invention, the electric drive axle system has a symmetrical arrangement centered about the first output half shaft.
According to still another aspect of the present invention, an R-range tooth is connected to an end surface of the first output gear, an L-range tooth is connected to an end surface of the second output gear, the synchronizer gear and the first output gear are connectable through the R-range tooth and a synchronizer, and the synchronizer gear and the second output gear are connectable through the L-range tooth and the synchronizer.
According to the other aspect of the invention, the first output half shaft and the second output half shaft are respectively connected with the rear output of the second planetary row.
According to still another aspect of the present invention, there is also provided an electric drive axle system characterized by comprising:
a first input unit comprising: an input shaft connected to the first motor; the first output gear can be sleeved on the input shaft in a relatively rotating manner; the second output gear can be sleeved on the input shaft in a relatively rotating manner; a synchronizer gear connected to the input shaft; a synchronizer selectively connecting and disconnecting the synchronizer gear with the first output gear and the second output gear; the two ends of the parallel shaft are respectively connected with a first parallel shaft gear and a second parallel shaft gear, the first parallel shaft gear is meshed with the first output gear, and the second parallel shaft gear is meshed with the second output gear;
a second input unit comprising: an input shaft connected to the second motor; the third output gear is connected with the input shaft connected with the second motor; and a third parallel shaft gear meshed with the third output gear;
the intermediate shaft is sleeved on the first output half shaft in a relatively rotating manner;
a middle shaft gear connected to a first end of the middle shaft and respectively meshed with the first parallel shaft gear and the third parallel shaft gear;
the first planet row comprises a first sun gear, a first planet gear, a first gear ring and a first planet carrier, and the first sun gear is connected to the second end of the intermediate shaft; and
the differential mechanism comprises a differential mechanism shell, a first output end and a second output end, wherein the differential mechanism shell is connected with the first planet carrier, the first output end is connected with the first output half shaft, and the second output end is connected with the second output half shaft.
According to yet another aspect of the present invention, the first ring gear is coupled to the axle housing.
According to still another aspect of the present invention, an R-range tooth is connected to an end surface of the first output gear, an L-range tooth is connected to an end surface of the second output gear, the synchronizer gear and the first output gear are connectable through the R-range tooth and a synchronizer, and the synchronizer gear and the second output gear are connectable through the L-range tooth and the synchronizer.
According to yet another aspect of the invention, the third parallel shaft gear is coupled to the second parallel shaft.
According to the other aspect of the invention, the first output half shaft and the second output half shaft are respectively connected with the rear output of the second planetary row.
The invention can obtain one or more of the following technical effects:
1. three-stage reduction gears are adopted, one group of reduction gears is a planetary gear set for reduction, and the requirement of large reduction ratio can be met.
2. The synchronizer installed on the motor shaft can realize two speed reduction gears, and further cooperate with the driving motor to output a rotating speed range, realize large speed reduction ratio stepless speed change, and realize unpowered interruption gear shifting while improving the efficiency.
3. The double motors are arranged externally, so that the size of a single motor can be reduced, and the maintenance of the motor is facilitated.
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 system according to a first preferred embodiment of the present invention.
Fig. 2 is a schematic diagram of an electric drive axle system according to a second preferred embodiment of the present invention.
Fig. 3 is a schematic diagram of an electric drive axle system according to a third 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, there is provided an electric drive axle system characterized by comprising:
a first input unit and a second input unit each including: an input shaft 102 connected to the first motor 101; a first output gear 103 rotatably sleeved on the input shaft 102; a second output gear 105 rotatably sleeved on the input shaft 102; a synchronizer gear connected to the input shaft 102; a synchronizer 104 selectively connecting the synchronizer gear with the first output gear 103 or the second output gear 105 and selectively disconnecting the synchronizer gear from the first output gear 103 and the second output gear 105; a parallel shaft 107, two ends of which are respectively connected with a first parallel shaft gear 106 and a second parallel shaft gear 108, wherein the first parallel shaft gear 106 is meshed with the first output gear 103, and the second parallel shaft gear 108 is meshed with the second output gear 105;
an intermediate shaft 112 rotatably sleeved on the first output half shaft 110;
a counter shaft gear 109 connected to a first end of the counter shaft 112 and engaged with the first parallel shaft gears 106 of the first and second input units, respectively;
a first planetary row including a first sun gear 113, a first planet gear 114, a first ring gear 115, and a first carrier 117, the first sun gear 113 being connected to a second end of the intermediate shaft 112; and
the differential comprises a differential case 118, a first output end and a second output end, wherein the differential case 118 is connected with the first planet carrier 117, the first output end is connected with the first output half shaft 110, and the second output end is connected with the second output half shaft 111.
According to a further preferred embodiment of the invention, the first ring gear 115 is connected to an axle housing 116.
In accordance with yet another preferred embodiment of the present invention, the electric drive axle system has a symmetrical arrangement centered about the first output half shaft 110.
According to still another preferred embodiment of the present invention, R-range teeth are connected to an end surface of the first output gear 103, L-range teeth are connected to an end surface of the second output gear 105, the synchronizer gear and the first output gear 103 can be connected by the R-range teeth and the synchronizer 104, and the synchronizer gear and the second output gear 105 can be connected by the L-range teeth and the synchronizer 104.
According to a further preferred embodiment of the invention, referring to fig. 3, said first output half shaft 110 and second output half shaft 111 are connected to the rear output of the second planetary row, respectively. Specifically, the first output half shaft 110 is connected with the output of the second planetary row 1120, and the second output half shaft 111 is connected with the output of the second planetary row 1119.
There is also provided in accordance with yet another preferred embodiment of the present invention, referring to fig. 2, an electric drive axle system, characterized by comprising:
a first input unit comprising: an input shaft 102 connected to the first motor 101; a first output gear 103 rotatably sleeved on the input shaft 102; a second output gear 105 rotatably sleeved on the input shaft 102; a synchronizer gear connected to the input shaft 102; a synchronizer 104 selectively connecting the synchronizer gear with the first output gear 103 or the second output gear 105 and selectively disconnecting the synchronizer gear from the first output gear 103 and the second output gear 105; a parallel shaft 107, two ends of which are respectively connected with a first parallel shaft gear 106 and a second parallel shaft gear 108, wherein the first parallel shaft gear 106 is meshed with the first output gear 103, and the second parallel shaft gear 108 is meshed with the second output gear 105;
a second input unit comprising: an input shaft 120 connected to the second motor 119; a third output gear 121 connected to the input shaft 120 connected to the second motor 119; and a third parallel shaft gear 122 meshed with the third output gear 121;
an intermediate shaft 112 rotatably sleeved on the first output half shaft 110;
a counter gear 109 connected to a first end of the counter shaft 112 and engaged with the first parallel shaft gear 106 and the third parallel shaft gear 122, respectively;
a first planetary row including a first sun gear 113, a first planet gear 114, a first ring gear 115, and a first carrier 117, the first sun gear 113 being connected to a second end of the intermediate shaft 112; and
the differential comprises a differential case 118, a first output end and a second output end, wherein the differential case 118 is connected with the first planet carrier 117, the first output end is connected with the first output half shaft 110, and the second output end is connected with the second output half shaft 111.
According to a further preferred embodiment of the invention, the first ring gear 115 is connected to an axle housing 116.
According to still another preferred embodiment of the present invention, R-range teeth are connected to an end surface of the first output gear 103, L-range teeth are connected to an end surface of the second output gear 105, the synchronizer gear and the first output gear 103 can be connected by the R-range teeth and the synchronizer 104, and the synchronizer gear and the second output gear 105 can be connected by the L-range teeth and the synchronizer 104.
According to a further preferred embodiment of the present invention, the third parallel shaft gear 122 is connected to another parallel shaft (second parallel shaft) 123.
According to a further preferred embodiment of the invention, said first output half shaft 110 and second output half shaft 111 are respectively connected to the rear output of the second planetary row.
Preferably, the electric drive axle system is a dual-motor external electric drive axle system.
The invention can obtain one or more of the following technical effects:
1. three-stage reduction gears are adopted, one group of reduction gears is a planetary gear set for reduction, and the requirement of large reduction ratio can be met.
2. The synchronizer installed on the motor shaft can realize two speed reduction gears, and further cooperate with the driving motor to output a rotating speed range, realize large speed reduction ratio stepless speed change, and realize unpowered interruption gear shifting while improving the efficiency.
3. The double motors are arranged externally, so that the size of a single motor can be reduced, and the maintenance of the motor is facilitated.
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 system characterized by comprising:
a first input unit and a second input unit each including: an input shaft connected to the first motor; the first output gear can be sleeved on the input shaft in a relatively rotating manner; the second output gear can be sleeved on the input shaft in a relatively rotating manner; a synchronizer gear connected to the input shaft; a synchronizer selectively connecting and disconnecting the synchronizer gear with the first output gear and the second output gear; the two ends of the parallel shaft are respectively connected with a first parallel shaft gear and a second parallel shaft gear, the first parallel shaft gear is meshed with the first output gear, and the second parallel shaft gear is meshed with the second output gear;
the intermediate shaft is sleeved on the first output half shaft in a relatively rotating manner;
a countershaft gear connected to a first end of the countershaft and engaged with the first parallel shaft gears of the first and second input units, respectively;
the first planet row comprises a first sun gear, a first planet gear, a first gear ring and a first planet carrier, and the first sun gear is connected to the second end of the intermediate shaft; and
the differential mechanism comprises a differential mechanism shell, a first output end and a second output end, wherein the differential mechanism shell is connected with the first planet carrier, the first output end is connected with the first output half shaft, and the second output end is connected with the second output half shaft.
2. The electric drive axle system of claim 1, wherein the first ring gear is coupled to an axle housing.
3. The electric drive axle system of claim 2, wherein the electric drive axle system has a symmetrical arrangement centered about the first output half shaft.
4. The electric drive axle system according to any one of claims 1 to 3, wherein an end surface of the first output gear is connected with R-range teeth, and an end surface of the second output gear is connected with L-range teeth, by which the synchronizer gear and the first output gear are connectable with a synchronizer, by which the synchronizer gear and the second output gear are connectable with a synchronizer.
5. The electric drive axle system of claim 4, wherein the first and second output half shafts are each connected to the rear output of the second planetary row.
6. An electric drive axle system characterized by comprising:
a first input unit comprising: an input shaft connected to the first motor; the first output gear can be sleeved on the input shaft in a relatively rotating manner; the second output gear can be sleeved on the input shaft in a relatively rotating manner; a synchronizer gear connected to the input shaft; a synchronizer selectively connecting and disconnecting the synchronizer gear with the first output gear and the second output gear; the two ends of the parallel shaft are respectively connected with a first parallel shaft gear and a second parallel shaft gear, the first parallel shaft gear is meshed with the first output gear, and the second parallel shaft gear is meshed with the second output gear;
a second input unit comprising: an input shaft connected to the second motor; the third output gear is connected with the input shaft connected with the second motor; and a third parallel shaft gear meshed with the third output gear;
the intermediate shaft is sleeved on the first output half shaft in a relatively rotating manner;
a middle shaft gear connected to a first end of the middle shaft and respectively meshed with the first parallel shaft gear and the third parallel shaft gear;
the first planet row comprises a first sun gear, a first planet gear, a first gear ring and a first planet carrier, and the first sun gear is connected to the second end of the intermediate shaft; and
the differential mechanism comprises a differential mechanism shell, a first output end and a second output end, wherein the differential mechanism shell is connected with the first planet carrier, the first output end is connected with the first output half shaft, and the second output end is connected with the second output half shaft.
7. The electric drive axle system of claim 6, wherein the first ring gear is coupled to an axle housing.
8. The electric drive axle system according to claim 6 or 7, wherein an end surface of the first output gear is connected with an R-range tooth, an end surface of the second output gear is connected with an L-range tooth, the synchronizer gear and the first output gear are connectable through the R-range tooth and a synchronizer, and the synchronizer gear and the second output gear are connectable through the L-range tooth and a synchronizer.
9. The electric drive axle system of claim 8, wherein the third parallel shaft gear is coupled to the second parallel shaft.
10. The electric drive axle system of claim 6 or 7, wherein the first output half shaft and the second output half shaft are respectively connected to the rear outputs of the second planetary row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110942560.9A CN113561748A (en) | 2021-08-17 | 2021-08-17 | Electric drive axle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110942560.9A CN113561748A (en) | 2021-08-17 | 2021-08-17 | Electric drive axle system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113561748A true CN113561748A (en) | 2021-10-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110942560.9A Pending CN113561748A (en) | 2021-08-17 | 2021-08-17 | Electric drive axle system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113561748A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113954615A (en) * | 2021-12-08 | 2022-01-21 | 北方汤臣传动科技有限公司 | Double-motor electric drive bridge structure |
| CN114161878A (en) * | 2022-01-05 | 2022-03-11 | 江苏华永复合材料有限公司 | External electric drive axle structure of bi-motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106553510A (en) * | 2017-01-13 | 2017-04-05 | 苏州绿控传动科技有限公司 | A kind of electricity of not coaxial bi-motor drives drive axle |
| CN112519501A (en) * | 2019-09-17 | 2021-03-19 | 东风德纳车桥有限公司 | Double-motor integrated two-gear AMT double-speed parallel shaft output two-stage belt wheel side speed reduction electric drive axle |
| CN112659870A (en) * | 2021-01-12 | 2021-04-16 | 中国重汽集团济南动力有限公司 | Double-motor electric drive axle assembly of belt wheel side speed reducer |
| CN112706598A (en) * | 2021-01-12 | 2021-04-27 | 中国重汽集团济南动力有限公司 | Vehicle with double-motor drive axle |
| CN215826461U (en) * | 2021-08-17 | 2022-02-15 | 北方汤臣传动科技有限公司 | Double-motor external electric drive bridge structure |
-
2021
- 2021-08-17 CN CN202110942560.9A patent/CN113561748A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106553510A (en) * | 2017-01-13 | 2017-04-05 | 苏州绿控传动科技有限公司 | A kind of electricity of not coaxial bi-motor drives drive axle |
| WO2018130101A1 (en) * | 2017-01-13 | 2018-07-19 | 苏州绿控传动科技有限公司 | Electric drive axle |
| CN112519501A (en) * | 2019-09-17 | 2021-03-19 | 东风德纳车桥有限公司 | Double-motor integrated two-gear AMT double-speed parallel shaft output two-stage belt wheel side speed reduction electric drive axle |
| CN112659870A (en) * | 2021-01-12 | 2021-04-16 | 中国重汽集团济南动力有限公司 | Double-motor electric drive axle assembly of belt wheel side speed reducer |
| CN112706598A (en) * | 2021-01-12 | 2021-04-27 | 中国重汽集团济南动力有限公司 | Vehicle with double-motor drive axle |
| CN215826461U (en) * | 2021-08-17 | 2022-02-15 | 北方汤臣传动科技有限公司 | Double-motor external electric drive bridge structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113954615A (en) * | 2021-12-08 | 2022-01-21 | 北方汤臣传动科技有限公司 | Double-motor electric drive bridge structure |
| CN114161878A (en) * | 2022-01-05 | 2022-03-11 | 江苏华永复合材料有限公司 | External electric drive axle structure of bi-motor |
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