CN106274463B - A kind of integrated electric drive assembly - Google Patents
A kind of integrated electric drive assembly Download PDFInfo
- Publication number
- CN106274463B CN106274463B CN201610857021.4A CN201610857021A CN106274463B CN 106274463 B CN106274463 B CN 106274463B CN 201610857021 A CN201610857021 A CN 201610857021A CN 106274463 B CN106274463 B CN 106274463B
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- Prior art keywords
- motor
- rotor
- drive assembly
- electric drive
- integrated electric
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 235000012771 pancakes Nutrition 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 6
- 238000005266 casting Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 241001137251 Corvidae Species 0.000 abstract 1
- 235000015108 pies Nutrition 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000350 mutagenesis Toxicity 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention relates to a kind of integrated electric drive assembly, by casing, motor, decelerator and differential mechanism composition, casing includes decelerator left box body (1) and integrated form casing (5), integrated form casing (5) is integrally cast by decelerator right case with motor housing, integrated form casing (5) is manufactured by way of casting technique and heat treatment and high accuracy processing, with bigger strength and stiffness, type of attachment between reducer input shaft (2) without external splines and the motor output shaft (4) without internal spline by being interference fitted by force, improve the transmission efficiency of electric drive assembly；And realize balance by two bearings between motor output shaft and reducer input shaft.Motor stator (6) and rotor (7) are Bao pies, can shorten motor axial dimension, reduce the profile space of assembly, considerably increase the flexible arrangement of power assembly.At least one groove is offered in the pole-shoe face of motor stator (6), the gap location that uniform intervals are provided between multiple concave surfaces, the upper two adjacent V-shaped grooves of rotor (7) on the outer peripheral face of rotor (7) is provided with hole A.
Description
Technical field
The invention belongs to electric powered motor drive assembly, more particularly to a kind of integrated electric drive assembly.
Background technology
Presently used electric powered motor drive assembly, most of is to pass through between motor output shaft and reducer input shaft
Traditional spline type of attachment transmission power, the fixed form for being bolted motor and decelerator carries out power drive.So
And, this traditional powered version transmission link is more, and axial dimension causes greatly volume substantially bigger than normal and quality weight, causes to pass
Efficiency of movement is low, and the strength and stiffness of attachment structure are weak compared to integrated box structure between bolt, and interior external splines manufacturing cost is high.
More in the prior art, the balanced structure of motor output shaft and reducer input shaft, is generally required for 3 bearings real
Now balance.In addition, the efficiency of motor of the prior art also has much room for improvement, driven therefore, the present invention proposes a kind of integrated electric
Dynamic assembly, this electric drive assembly is a series of improvement by technologies, and electric drive assembly reaches highest efficiency, while can drop again
Low manufacturing cost.
The content of the invention
The purpose of the present invention is to propose to a kind of integrated electric drive assembly, transmission link is reduced, transmission efficiency is improved, subtracts
Small volume, weight, cost, while also enhancing the intensity of structure, improve security.
The technical scheme is that：A kind of integrated electric drive assembly, by casing, motor, decelerator and differential mechanism group
Into, it is characterised in that：Casing include decelerator left box body 1 and integrated form casing 5, integrated form casing 5 by decelerator right case with
Motor housing is integrally cast, and motor output shaft 4 is connected with reducer input shaft 2, and reducer input shaft 2 is without external splines, motor
Output shaft 4 is without internal spline, and the drive mechanism constituted after motor output shaft and reducer input shaft connection carrys out reality by two bearings
Now balance, pie motor stator 6 is fixed on collection by the motor using the motor stator 6 of pie and the rotor 7 of pie
In accepted way of doing sth casing 5, the pole-shoe face of motor stator 6 offers at least one groove, and the outer peripheral face of rotor 7 is non-circular, in electricity
Uniform intervals are provided with multiple concave surfaces on the outer peripheral face of machine rotor, and rotor 7 is provided with the V of quantity identical with rotor number of poles
Shape groove, two adjacent V-shaped grooves have gap close to rotor outer peripheral face side, and place is provided with hole A in this gap.
Motor stator 6 and rotor 7 are pancake shape.
Preferably, the quantity of concave surface is the integral multiple of rotor number of poles.
Preferably, multiple permanent magnets are disposed with rotor, the iron core in the top of permanent magnet is provided with small vertical slot B.
Preferably, rotor is provided with multiple hole C below permanent magnet, and hole C is by three roundlets around a great circle group
Into multiple hole C are uniformly distributed around the central shaft hole of rotor.
Preferably, V-shaped groove is made up of two disconnected elongated slots, and the big opening of V-shaped groove is towards the periphery of rotor
Face, permanent magnet is placed in the elongated slot of V-shaped groove.
Preferably, hole A is shaped as trapezoidal, specially isosceles trapezoid.
Preferably, it is to be connected with the fit form of strong interference between the motor output shaft 4 and reducer input shaft 2.
Preferably, it is to be connected with the fit form of interference between the motor output shaft 4 and rotor 7.
Preferably, the drive mechanism located at each bearing at two ends by realizing that motor output shaft is defeated to decelerator
Enter the balance between axle, the bearing of one end is fixed on decelerator left box body 1, and the bearing of the other end is fixed on back end cover for motor
On.
Preferably, sealed between motor and decelerator by axial seal 3.
Preferably, the outer surface of integrated form casing 5 is provided with a plurality of radiating ribs.
The beneficial effects of the invention are as follows：Volume is reduced, weight and cost is reduced, transmission link is reduced, enhancing finishes
The strength and stiffness of structure, improve transmission efficiency and the utilization rate of energy, and be effectively reduced cogging torque and the pulsation of motor
Torque, improves torque and the efficiency of magneto, also helps the material cost of reduction motor magnet, improve motor torque special
Property, the effect of rotor dynamic balancing is improved, while enhancing safety and reliability.The integrated electric drive assembly of the present invention is relative
15% efficiency is improved in traditional electric automobile drive assembly, while overall efficiency improves 3%, the efficiency grade of motor
IE2 level can be reached.
The present invention is described in detail with reference to the accompanying drawings and examples.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of integrated electric drive assembly of the invention.
Fig. 2 is a kind of front view of integrated electric drive assembly of the invention.
Fig. 3 is the plan of motor stator in a kind of integrated electric drive assembly of the invention.
Fig. 4 is the plan of rotor in a kind of integrated electric drive assembly of the invention.
Embodiment
The core of the present invention is to be related to a kind of integrated electric drive assembly, by casing, motor, decelerator and differential mechanism group
Into motor is magneto.Casing includes decelerator left box body 1 and integrated form casing 5, and integrated form casing 5 is by the right case of decelerator
Body is integrally cast with motor housing, and integrated form casing 5 is realized by way of casting technique and heat treatment and high accuracy processing
Bigger intensity, rigidity, it is ensured that safety and reliability, while also reducing the volume of drive assembly, weight, are realized light
Quantify.
Motor output shaft 4 is connected with reducer input shaft 2, and reducer input shaft 2 is without external splines, the nothing of motor output shaft 4
Internal spline, the type of attachment between reducer input shaft 2 and motor output shaft 4 reaches mistake by force using the method for hot charging and cold charge
It is full of cooperation, the spline fitted form of traditional electric automobile drive assembly is instead of, by this design method in motor and decelerator
Between use, reduce the transmission link between input and output shaft, improve the transmission efficiency of electric drive assembly, while also removing
The complicated manufacturing process of spline.Motor has motor stator 6 and rotor 7, between rotor 7 and motor output shaft 4
Also by interference fit, the keyway fit system in conventional design is eliminated, the design advantage of this motor is to reduce many places
Transmission link, further improves transmission efficiency, makes up to 94% transmission efficiency.Manufacturing process is simplified simultaneously, is reduced
Manufacturing cost.
The drive mechanism constituted after motor output shaft and reducer input shaft connection realizes balance, institute by two bearings
Drive mechanism is stated by realizing motor output shaft to the balance between reducer input shaft, one located at each bearing at two ends
End bearing is fixed on decelerator left box body 1, and another end bearing is fixed on motor rear end and covered, and two bearings more can guarantee that coaxially
The precision of degree, can also reduce the impact to axle, moreover it is possible to lower vibration when running at high speed, at the same to the design of axial dimension chain and
The calculating of precision is made in the cooperation of each part dimension and position, it is ensured that motor output shaft and reducer input shaft will not be caused very
Big impact.
Motor stator 6 and rotor 7 are pancake shape, can shorten motor axial dimension, subtract the profile space of assembly
It is small, considerably increase the flexible arrangement of power assembly.
Integrated form casing 5 can conduct the heat of motor on gear box casing, and the outer surface of integrated form casing is set
There are a plurality of radiating ribs, and the resemblance due to housing and the radiating ribs thickness to its shell carry out fine processing, make its body
Product and quality reduce, and realize lightweight, while ensure that bigger area of dissipation, are more conducive to more preferably radiating, reduce energy
Loss, and then improve the utilization rate of energy.
The effect of separating dry space from moist space had both been reached between motor and decelerator by using axial seal 3, had been served again good
Sealing function.
The pole-shoe face of motor stator 6 offers at least one groove 8, by setting above-mentioned groove 8, to increase equivalent gas
Gap, reduces the torque pulsation of motor, improves direct torque precision, can also reduce the noise of motor, the width of groove 8 is 0.1 milli
Rice~3 millimeters, depth is 0.1 millimeter~3 millimeters.1~6 groove 8 is can be set in each pole-shoe face, and groove 8 is advised on pole-shoe face
Then it is distributed.
Uniform intervals are provided with multiple concave surfaces 9 on the outer peripheral face of rotor 7, and the quantity of concave surface 9 is rotor number of poles
Integral multiple, can so be effectively improved the magnetic flux distribution of rotor outer circle circumferential portion iron core, make the magnetic of inflow motor stator portion
The line of force does not produce mutation, reduces the cogging torque and pulsating torque of motor, improves torque and the efficiency of magneto, also helps
Reduce the material cost of motor magnet.Wherein, the depth of concave surface is the 1-3 of electromagnetic steel plate (silicon steel sheet) thickness of rotor core
Times.
Rotor is provided with the V-shaped groove of quantity identical with permanent magnet machine rotor number of poles, and V-shaped groove is disconnected thin by two
Elongated slot is constituted, and the big opening of V-shaped groove places permanent magnet, two phases towards the outer peripheral face of rotor in the elongated slot of V-shaped groove
Adjacent V-shaped groove has gap close to rotor outer peripheral face side, and place is provided with hole A10 in this gap, and hole A10's is shaped as ladder
Shape, concretely isosceles trapezoid, can be with by above-mentioned location arrangements hole A10, it is possible to reduce the pulsating torque and leakage field of motor
Improve the efficiency of motor.
Multiple permanent magnets are disposed with rotor, the iron core in the top of permanent magnet is provided with small vertical slot B11, are shaped as length
Circle, can facilitate technique manufacture and the combination of core stamping to install.
Rotor is provided with multiple hole C 12 below permanent magnet, and hole C 12 is by three roundlets around a great circle group
Into multiple hole C 12 are uniformly distributed around the central shaft hole of rotor, and this design is the design of rotor dynamic balancing, can be fast
Speed is readily achieved rotor dynamic balancing, shortens operating process and improves the effect of rotor dynamic balancing.Motor stator 6 is fixed on integrated
In formula casing 5, and traditional keyway cooperation side is eliminated by interference fit between rotor 7 and motor output shaft 4
Formula, both simplifies manufacturing process, and the axiality between motor output shaft 4 and rotor 7 is improved again, motor is more beneficial for
The design of balance is calculated.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that；It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (13)
1. a kind of integrated electric drive assembly, is made up of casing, motor, decelerator and differential mechanism, it is characterised in that：Casing includes
Decelerator left box body (1) and integrated form casing (5), integrated form casing (5) are integrally cast by decelerator right case with motor housing,
Motor output shaft (4) is connected with reducer input shaft (2), and reducer input shaft (2) is without external splines, motor output shaft (4) nothing
The drive mechanism constituted after internal spline, motor output shaft and reducer input shaft connection realizes balance, institute by two bearings
Motor is stated using the motor stator (6) of pie and the rotor (7) of pie, and pie motor stator (6) is fixed on integrated
In formula casing (5), the pole-shoe face of motor stator (6) offers at least one groove, and the outer peripheral face of rotor (7) is not rounded
Shape, uniform intervals are provided with multiple concave surfaces on the outer peripheral face of rotor, and rotor (7) is provided with and rotor number of poles phase
With the V-shaped groove of quantity, two adjacent V-shaped grooves have gap close to rotor outer peripheral face side, and place is provided with this gap
Hole A.
2. a kind of integrated electric drive assembly according to claim 1, it is characterised in that motor stator (6) and motor turn
Sub (7) are pancake shape.
3. a kind of integrated electric drive assembly according to claim 1, it is characterised in that the quantity of concave surface is rotor
The integral multiple of number of poles.
4. a kind of integrated electric drive assembly according to claim 1, it is characterised in that be disposed with rotor multiple
Permanent magnet, the iron core in the top of permanent magnet is provided with small vertical slot B.
5. a kind of integrated electric drive assembly according to claim 4, it is characterised in that rotor is under permanent magnet
Fang Kaiyou multiple hole C, hole C are made up of three roundlets around a great circle, and multiple hole C uniformly divide around the central shaft hole of rotor
Cloth.
6. a kind of integrated electric drive assembly according to claim 1, it is characterised in that V-shaped groove is disconnected by two
Elongated slot is constituted, and the big opening of V-shaped groove places permanent magnet towards the outer peripheral face of rotor in the elongated slot of V-shaped groove.
7. a kind of integrated electric drive assembly according to claim 1, it is characterised in that being shaped as hole A is trapezoidal.
8. a kind of integrated electric drive assembly according to claim 7, it is characterised in that hole A's is shaped as isosceles trapezoid.
9. a kind of integrated electric drive assembly according to claim 1, it is characterised in that the motor output shaft (4) and
It is the fit form connection with strong interference between reducer input shaft (2).
10. a kind of integrated electric drive assembly according to claim 1, it is characterised in that the motor output shaft (4) and
It is the fit form connection with interference between rotor (7).
11. a kind of integrated electric drive assembly according to claim 1, it is characterised in that the drive mechanism is by setting
Motor output shaft is realized in each bearing at two ends to the balance between reducer input shaft, the bearing of one end, which is fixed on, to be subtracted
On fast device left box body (1), the bearing of the other end is fixed on motor rear end and covered.
12. a kind of integrated electric drive assembly according to claim 1, it is characterised in that lead between motor and decelerator
Axial seal (3) is crossed to be sealed.
13. a kind of integrated electric drive assembly according to claim 1, it is characterised in that in the outer of integrated form casing (5)
Surface is provided with a plurality of radiating ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610857021.4A CN106274463B (en) | 2016-09-27 | 2016-09-27 | A kind of integrated electric drive assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610857021.4A CN106274463B (en) | 2016-09-27 | 2016-09-27 | A kind of integrated electric drive assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106274463A CN106274463A (en) | 2017-01-04 |
| CN106274463B true CN106274463B (en) | 2017-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610857021.4A Active CN106274463B (en) | 2016-09-27 | 2016-09-27 | A kind of integrated electric drive assembly |
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| Country | Link |
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| CN (1) | CN106274463B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107416215B (en) * | 2017-01-13 | 2024-02-23 | 重庆星环航空科技有限公司 | Power arrangement structure of direct drive main speed reducer |
| CN110154747A (en) * | 2018-02-12 | 2019-08-23 | 比亚迪股份有限公司 | Transmissions for vehicles, powertrains for vehicles, and vehicles |
| CN109398060A (en) * | 2018-12-11 | 2019-03-01 | 北京宏瑞汽车科技股份有限公司 | A kind of integrated electric drive system |
| CN109455074A (en) * | 2018-12-11 | 2019-03-12 | 北京宏瑞汽车科技股份有限公司 | A kind of integrated electric drive system |
| CN109703345A (en) * | 2019-02-28 | 2019-05-03 | 北京宏瑞汽车科技股份有限公司 | A kind of coaxial-type electric drive system |
| CN111946798A (en) * | 2020-09-23 | 2020-11-17 | 上海盘毂动力科技股份有限公司 | A motor and reducer assembly |
| CN112498077A (en) * | 2020-09-30 | 2021-03-16 | 西门子电动汽车动力总成系统(上海)有限公司 | Electric drive assembly system and vehicle |
| CN112193043A (en) * | 2020-09-30 | 2021-01-08 | 西门子电动汽车动力总成系统(上海)有限公司 | Electric drivetrain systems and vehicles |
| WO2025199746A1 (en) * | 2024-03-26 | 2025-10-02 | 精进电动科技（正定）有限公司 | Electric drive system having one-piece integrated input shaft supported by two bearings |
| CN222987957U (en) * | 2024-04-23 | 2025-06-17 | 比亚迪股份有限公司 | Electric drive assembly housing, electric drive assembly and vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4407714C1 (en) * | 1994-03-08 | 1995-07-06 | Gruendl & Hoffmann | Electric motor with integrated transmission |
| JP3572600B2 (en) * | 1996-11-25 | 2004-10-06 | トヨタ自動車株式会社 | Reducer integrated motor |
| US6008559A (en) * | 1997-07-22 | 1999-12-28 | Matsushita Electric Industrial Co., Ltd. | Motor using a rotor including an interior permanent magnet |
| US7342339B2 (en) * | 2004-10-21 | 2008-03-11 | Shop Vac Corporation | Reluctance machine having a non-uniform air gap |
| CN104426264A (en) * | 2013-09-10 | 2015-03-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor magnetic steel fixing structure and motor with same |
| CN104716777A (en) * | 2015-03-10 | 2015-06-17 | 广东合普动力科技有限公司 | Integrated-structure motor for electric vehicle |
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2016
- 2016-09-27 CN CN201610857021.4A patent/CN106274463B/en active Active
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Effective date of registration: 20170119 Address after: Xuchang City, Henan province 461500 Changge City Industrial Agglomeration District Branch Canal Road East Applicant after: XUCHANG HERUN MECHANICAL AND ELECTRICAL CO., LTD. Address before: 101149 Beijing, Xinhua South Road, No. 39, building No. 99, on the east side of the building, No. Applicant before: Beijing Hong Rui auto technology Company Limited by Shares |
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