CN110605958A - Coaxial power coupling driving motor assembly - Google Patents
Coaxial power coupling driving motor assembly Download PDFInfo
- Publication number
- CN110605958A CN110605958A CN201910894608.6A CN201910894608A CN110605958A CN 110605958 A CN110605958 A CN 110605958A CN 201910894608 A CN201910894608 A CN 201910894608A CN 110605958 A CN110605958 A CN 110605958A
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- power motor
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- 230000008878 coupling Effects 0.000 title claims abstract description 14
- 238000010168 coupling process Methods 0.000 title claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
Classifications
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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
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a coaxial power coupling driving motor assembly, which comprises a high-power motor shell, a low-power motor shell, a high-power motor winding, a low-power motor winding, a concentric inner shaft bearing, a concentric outer shaft bearing, a high-power motor rotor, a concentric outer shaft, a low-power motor rotor, a concentric inner shaft, a sun wheel, a planet wheel, a gear ring, an output shaft and a flange, wherein the high-power motor winding is used as a stator and fixed in the high-power motor shell, the low-power motor winding is used as a stator and fixed in the low-power motor shell, the high-power motor rotor and the concentric outer shaft are fixed on the high-power motor shell through the concentric outer shaft bearing, the low-power motor rotor and the concentric inner shaft are fixed in the low-power motor shell, the, the gear ring is fixed at the output ends of the high-power motor rotor and the concentric outer shaft, and the output shaft and the flange are used as a planet carrier to fix the planet wheel.
Description
The technical field is as follows:
the invention relates to an electric drive system of a new energy vehicle, in particular to a coaxial power coupling drive motor assembly.
Background art:
the electric drive is a core system of a new energy automobile, wherein a driving motor and a transmission mechanism are core parts of the electric drive system. The problem of 'big horse drawing trolley' or 'small horse drawing trolley' exists no matter the design and the actual use of conventional power or new energy vehicle types, and the problem is the inevitable contradiction of taking a trade off between power priority and economic priority. For new energy automobiles, in order to reduce the contradiction as much as possible, mechanical gearboxes are added to part of automobile types, double motors, wheel-side motors or wheel hub motors which are distributed are selected to part of automobile types, and double-stator single-rotor driving motors are also developed by manufacturers. The solutions have inherent defects of immature electronic differential speed and products, difficult control of vibration or noise, low efficiency, rapid and excessive wear of tires, low cost performance and the like, so that the solutions to the problems are more practical on mature centralized electric drive systems.
The coaxial power coupling driving motor assembly provided by the invention can enable a driving motor to efficiently operate under different working conditions, meets the requirement of light weight, improves the friendliness to a power battery, improves the driving experience, can directly replace a centralized driving scheme, and has small change on the whole vehicle.
The invention content is as follows:
the invention provides a coaxial power coupling driving motor assembly for solving the problems in the prior art, the running state combination of two motors is realized through a planetary gear power coupler, the structure is simple and mature, the universality is good, the reliability is high, the energy-saving effect is obvious, the battery friendliness is more excellent, and the cost performance is outstanding.
The technical scheme adopted by the invention is as follows: a coaxial power coupling driving motor assembly comprises a high-power motor shell, a low-power motor shell, a high-power motor winding, a low-power motor winding, a concentric inner shaft bearing, a concentric outer shaft bearing, a high-power motor rotor, a concentric outer shaft, a low-power motor rotor, a concentric inner shaft, a sun wheel, a planet wheel, a gear ring, an output shaft and a flange, wherein the high-power motor winding is used as a stator and fixed in the high-power motor shell, the low-power motor winding is used as a stator and fixed in the low-power motor shell, the high-power motor rotor and the concentric outer shaft are fixed on the high-power motor shell through the concentric outer shaft bearing, the low-power motor rotor and the concentric inner shaft are respectively fixed in the low-power motor shell, the high-power motor rotor, the gear ring is fixed at the output ends of the high-power motor rotor and the concentric outer shaft, the output shaft and the flange are used as a planet carrier to fix the planet gear, and the sun gear, the planet gear, the gear ring, the output shaft and the flange assembly are a planet gear power coupler.
The invention has the following beneficial effects:
1. the system is suitable for replacing the existing widely-adopted centralized driving electric driving system (including an electric driving system on an electric driving bridge);
2. compared with a single motor system, the large motor and the small motor respectively run or simultaneously run, and the requirements on power, torque and efficiency under different working conditions are met;
3. compared with a double-stator single-rotor motor, the small motor running at high speed adopts a smaller rotor and a thinner output shaft, so that the power loss is small;
4. compared with a distributed electric drive system with a front shaft and a rear shaft arranged by double motors, the distributed electric drive system is convenient to directly replace a concentrated electric drive system, has good universality on widely applied vehicle types, and avoids the development of new vehicle types;
5. compared with an electric drive system with a common gearbox, the gear shifting mechanism is reduced;
6. because all the gears are in a meshed state in the operation process, the planetary gear power coupler runs smoothly, the NVH performance is better, and the mechanical efficiency is higher;
7. when braking, the planet carrier drives the high-speed small motor on the sun gear, so that the regenerative rotating speed range is larger, and the energy recovery performance is stronger.
Description of the drawings:
FIG. 1 is a schematic half-section view of an assembly of a coaxial power coupling drive motor assembly of the present invention.
FIG. 2 is a schematic diagram of the coaxial power coupling driving motor assembly according to the present invention.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings.
The invention discloses a coaxial power coupling driving motor assembly, which comprises a high-power motor shell 1, a low-power motor shell 2, a high-power motor winding 3, a low-power motor winding 4, a concentric inner shaft bearing 5, a concentric outer shaft bearing 6, a high-power motor rotor and a concentric outer shaft 7, a low-power motor rotor and a concentric inner shaft 8, a sun wheel 9, a planet wheel 10, a gear ring 11, an output shaft and a flange 12, wherein the high-power motor winding 3 is used as a stator and fixed in the high-power motor shell 1, the low-power motor winding 4 is used as a stator and fixed in the low-power motor shell 2, the high-power motor rotor and the concentric outer shaft 7 are fixed on the high-power motor shell 1 through the concentric outer shaft bearing 6, the low-power motor rotor and the concentric inner shaft, the sun gear 9 is fixed at the output end of the rotor of the low-power motor and the concentric inner shaft 8, the gear ring 11 is fixed at the output end of the rotor of the high-power motor and the concentric outer shaft 7, and the output shaft and the flange 12 are used as a planet carrier fixed planet gear 10. The assembly of the sun gear 9, the planet gear 10, the gear ring 11, the output shaft and the flange 12 is a planet gear power coupler.
The invention discloses a coaxial power coupling driving motor assembly, which connects output shafts of two motors with large and small power together through a planetary gear power coupler (hereinafter referred to as a power coupler), wherein a rotor of a low-speed high-power motor and a concentric outer shaft are hollow (hereinafter referred to as a concentric outer shaft), the rotor of the high-speed low-power motor and the concentric inner shaft are concentrically arranged with the rotor of the high-speed low-power motor (hereinafter referred to as a concentric inner shaft), the output end of the concentric outer shaft is fixed with a gear ring of the power coupler, the output end of the concentric inner shaft is fixed with a sun gear of the power coupler, and a planet carrier of the power coupler is provided with an output shaft and a flange for outputting power.
The coaxial power coupling driving motor assembly of the invention comprises: the concentric outer shaft of the high-speed low-power motor and the concentric inner shaft of the low-speed high-power motor are coaxially arranged, and the concentric inner shaft of the low-speed high-power motor penetrates through the concentric outer shaft of the high-speed low-power motor and is connected to the power coupler. The power coupler is of the planetary gear type, wherein the sun gear is fixed on a concentric inner shaft, the gear ring is fixed on a concentric outer shaft, and the planet carrier is provided with a flange as an output end.
The technical principle of the coaxial power coupling driving motor assembly is as follows:
1. dynamic coupler
The power coupler has the advantages that the number of teeth of the sun gear is the smallest, the number of teeth of the planet carrier is the largest, and the number of teeth of the ring gear is between the sun gear and the planet carrier. Therefore, the concentric inner shaft is connected with the sun gear, the concentric outer shaft is connected with the gear ring, and the planet carrier is used as an output shaft, so that the speed reduction and the torque increase can be realized.
2. Startup acceleration
When the vehicle starts, the high-speed low-power motor is started preferentially, and the acceleration working condition is gradually transited to the low-speed high-power motor or the double-motor operation according to the load.
3. Normal running
And according to different control strategies of dynamic property and economical efficiency and actual load, the two motors are switched to operate according to requirements.
4. Climbing working condition
The low-speed high-power motor runs preferentially, the double motors run simultaneously when necessary, and the power coupler outputs all the power of the two motors to the drive axle and the differential mechanism.
5. Braking mode
According to parameters such as vehicle state (such as whether a power battery is ready), vehicle speed and the like, the running states of the two motors are controlled, and only the low-power motor runs at low speed so as to obtain more energy recovery.
6. Other operating conditions
Such as urban congestion, highway, mountain land and other working conditions, the running states of the two motors can be respectively controlled according to corresponding indexes such as load, speed and the like through the arrangement and combination of the working conditions, and therefore higher running efficiency is obtained.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (1)
1. The utility model provides a coaxial power coupling driving motor assembly which characterized in that: the high-power motor comprises a high-power motor shell (1), a low-power motor shell (2), a high-power motor winding (3), a low-power motor winding (4), a concentric inner shaft bearing (5), a concentric outer shaft bearing (6), a high-power motor rotor and a concentric outer shaft (7), a low-power motor rotor and a concentric inner shaft (8), a sun gear (9), a planet gear (10), a gear ring (11), an output shaft and a flange (12), wherein the high-power motor winding (3) is fixed in the high-power motor shell (1) as a stator, the low-power motor winding (4) is fixed in the low-power motor shell (2) as a stator, the high-power motor rotor and the concentric outer shaft (7) are fixed on the high-power motor shell (1) through the concentric outer shaft bearing (6), and the low-power motor rotor and the concentric inner shaft (8) are respectively fixed on the low-power The sun gear (9) is fixed at the output end of the low-power motor rotor and the output end of the concentric inner shaft (8), the gear ring (11) is fixed at the output end of the high-power motor rotor and the concentric outer shaft (7), the output shaft and the flange (12) are used as a planet carrier to fix the planet gear (10), and the assembly of the sun gear (9), the planet gear (10), the gear ring (11) and the output shaft and the flange (12) is a planet gear power coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910894608.6A CN110605958A (en) | 2019-09-20 | 2019-09-20 | Coaxial power coupling driving motor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910894608.6A CN110605958A (en) | 2019-09-20 | 2019-09-20 | Coaxial power coupling driving motor assembly |
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| Publication Number | Publication Date |
|---|---|
| CN110605958A true CN110605958A (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910894608.6A Pending CN110605958A (en) | 2019-09-20 | 2019-09-20 | Coaxial power coupling driving motor assembly |
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| Country | Link |
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| CN (1) | CN110605958A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012163438A1 (en) * | 2011-05-28 | 2012-12-06 | Volkswagen Aktiengesellschaft | Transmission arrangement for a motor vehicle |
| CN104753248A (en) * | 2015-03-16 | 2015-07-01 | 郑州宇通客车股份有限公司 | Electric motor mechanism |
| CN105216653A (en) * | 2015-10-30 | 2016-01-06 | 福建万润新能源科技有限公司 | A kind of double-motor multi-mode power system of adjustable speed and driving method |
| CN105857044A (en) * | 2016-04-18 | 2016-08-17 | 郑州宇通客车股份有限公司 | Dual motor-single planet gear set power device and electric car |
| CN210970639U (en) * | 2019-09-20 | 2020-07-10 | 开沃新能源汽车集团有限公司 | Coaxial power coupling driving motor assembly |
-
2019
- 2019-09-20 CN CN201910894608.6A patent/CN110605958A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012163438A1 (en) * | 2011-05-28 | 2012-12-06 | Volkswagen Aktiengesellschaft | Transmission arrangement for a motor vehicle |
| CN104753248A (en) * | 2015-03-16 | 2015-07-01 | 郑州宇通客车股份有限公司 | Electric motor mechanism |
| CN105216653A (en) * | 2015-10-30 | 2016-01-06 | 福建万润新能源科技有限公司 | A kind of double-motor multi-mode power system of adjustable speed and driving method |
| CN105857044A (en) * | 2016-04-18 | 2016-08-17 | 郑州宇通客车股份有限公司 | Dual motor-single planet gear set power device and electric car |
| CN210970639U (en) * | 2019-09-20 | 2020-07-10 | 开沃新能源汽车集团有限公司 | Coaxial power coupling driving motor assembly |
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