CN104410237A - Integral direct-drive disc-type wheel hub motor - Google Patents
Integral direct-drive disc-type wheel hub motor Download PDFInfo
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- CN104410237A CN104410237A CN201410697450.0A CN201410697450A CN104410237A CN 104410237 A CN104410237 A CN 104410237A CN 201410697450 A CN201410697450 A CN 201410697450A CN 104410237 A CN104410237 A CN 104410237A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention provides an integral direct-drive disc-type wheel hub motor comprising a motor stator portion and a motor rotor portion. The rotor portion is connected to an automotive hub directly, and the stator portion is connected to the automotive suspension; the stator portion comprises a motor stator, a motor winding, a motor controller, a bearing, a temperature sensor and a magnetoelectric encoder; the rotor portion comprises a motor rotor and a permanent magnet. In addition, the motor controller is an important part of an electric automobile drive system; aiming to reduce the size and save the automobile internal space, the liquid cooling manner is adopted conventionally. The motor adopts the liquid cooling radiation manner. Thus, the integral direct-drive disc-type wheel hub motor shares a radiation structure, the power density of the electric automobile drive system can be increased, the automotive car internal space is increased, automobile sound isolation design is benefited, and the electromagnetic noise of the automotive car can be reduced.
Description
Technical field
The present invention relates to a kind of Integral direct-drive disc type wheel hub motor, specifically belong to driving motor for electric automobile field.
Background technology
Along with the high speed development of automobile industry, petroleum resources shortage, environment are warmed and the series of problems such as climate warming is appeared suddenly.Be that the new-energy automobile of representative will become one of important directions of China's development of automobile industry with pure electric automobile.And automobile power-driven system is as the unique power source of pure electric automobile, its performance directly affects the dynamic property of car load, stability and comfortableness.
Before the eighties in 20th century, nearly all vehicle traction electric machine is direct current machine, and this accelerates tractive effort greatly, the advantages such as control system is simpler because direct current machine has starting.The shortcoming of direct current machine there is mechanical commutator, and when running under high speed heavy load, commutator face can produce spark, and therefore motor speed can not be too high.So in recent years the traction electric machine of electric automobile based on asynchronous machine and magneto.
The vector control speed adjusting technique comparative maturity of AC induction motor, Induction Motor-Driven system is made to have obvious advantage, therefore by the drive system being applied to electric automobile comparatively early, remain the main product of drive system of electric automobile at present, but compared with magneto, its power density is on the low side.
The rotary power that the centralized driving motor of conventional electric automobile produces, some consumes in the process driven at automobile legacy system.Adopt direct-drive type wheel hub motor (201310220075.6,201310360010.1 etc.) without back gear, torque can be realized to be applied directly on wheel, thus energy loss can be down to minimum, promote transmission efficiency, but it adopts permanent magnet motor structure to reduce space availability ratio compared with the disc type electric machine of flat structure.Patent 201310360010.1 proposes a kind of direct-drive switched reluctance wheel hub motor, patent 201310220075.6 proposes a kind of fork truck hub direct-drive motor, but the intensity aspect of its cooling system and rotor axis of electric is not considered in detail, as magneto, its motor temperature will have a strong impact on the useful life of permanent magnet with vibrations, even cause it to damage.Its electric machine controller separates with motor body simultaneously, and space availability ratio is low.
Summary of the invention
Goal of the invention: the invention provides a kind of Integral direct-drive disc type wheel hub motor, its objective is the deficiency existing for solution mode in the past.
technical scheme: the present invention is achieved through the following technical solutions:
Integral direct-drive disc type wheel hub motor, is characterized in that: this motor comprises motor stator and rotor, and motor stator coordinates with rotor and forms motor body structure; Rotor portion is directly connected with automotive hub, and stationary part is connected with the suspension of automobile; By bearing fit between motor stator and rotor, motor stator is provided with motor winding, and rotor is made up of the punching silicon steel sheet that stacks of permanent magnet and fixed permanent magnet.
Motor stator is provided with the magnetism encoder for detecting motor rotor position, magnetism encoder contacts with being fixed on rotor and with the magnetic coder code-disc of rotor Concentric rotation, in a side end cap of the close automobile hanging of motor stator, be provided with liquid cooling structure, liquid cooling structure is the water channel be arranged in end cap.
The electric machine controller be integrated in one with motor is had in the arranged outside of the end cap being provided with liquid cooling structure, electric machine controller and motor is made to share a set of liquid cooling structure, this end cap is also provided with the temperature sensor for detecting liquid cooling structure temperature, and temperature sensor and magnetism encoder are connected to electric machine controller.
The water channel of liquid cooling structure is the distribution of tree ring shape.
Have an axial air-gap in the middle of motor stator and rotor, bearing is arranged in this axial air-gap, and the iron core of motor stator forms by being with coil of strip to rush, and motor stator adopts flume structure.
Electric machine controller adopts rotor field-oriented vector control method, electric machine controller Real-time Collection rotor current and utilize magnetism encoder to gather rotor-position, controls Integral direct-drive disc type wheel hub motor torque and rotating speed.
advantage and effect:
The invention provides a kind of Integral direct-drive disc type wheel hub motor, comprise motor stator and rotor part, rotor portion is directly connected with automotive hub, stationary part is connected with the suspension of automobile, stationary part comprises motor stator, motor winding and electric machine controller, bearing, temperature sensor, magnetism encoder, and rotor portion comprises rotor and permanent magnet.
Disc-type permanent magnet motor is the motor adopting axial flux designs.As the motor of its profile difference of magneto with other.Its axial dimension is short, profile is flat, because be very suitable for being arranged on the place that space exists strict restriction.Due to the profile that disc type electric machine is flat, advantageously in heat radiation, thus rotor can arrange higher current density, thus obtains larger overload capacity, higher power/weight when detent torque.And compared with the conventional radial magnetic field electric motor of identical capacity, it has lightweight, that axial dimension is short, volume is little, efficiency is high feature.
In addition, electric machine controller is the important component part of drive system of electric automobile, in order to reduce own vol, saving vapour interior space and usually adopting liquid-cooling heat radiation mode.Usual motor adopts liquid-cooling heat radiation mode too.Therefore, invent a kind of Integral direct-drive disc type wheel hub motor of shared radiator structure, not only can improve the power density of electric automobile electric drive system, promote space in automobile cab, also contribute to auto sound design, alleviate electromagnetic noise in automobile cab.
accompanying drawing illustrates:
Fig. 1 is motor front view of the present invention;
Fig. 2 is motor side view of the present invention;
Fig. 3 is Fig. 1 rearview;
Fig. 4 is liquid cooling structure schematic diagram;
Fig. 5 is stator slot schematic diagram;
In figure: 1, motor stator, 2, automotive suspension, 3, electric machine controller, 4, temperature sensor, 5, rotor, 6, bearing, 7, liquid cooling structure, 8, magnetism encoder, 9, magnetic coder code-disc, 10, motor stator skewed slot, 12, skewed stator slot angle, 13, bury gauge hole in stator end cap.
embodiment:below in conjunction with accompanying drawing, the present invention will be further described:
As illustrated in fig. 1 and 2, the invention provides a kind of Integral direct-drive disc type wheel hub motor, this motor comprises motor stator 1 and rotor 5, and motor stator 1 coordinates with rotor and forms motor body structure; Rotor portion is directly connected with automotive hub, Direct driver hub rotation, and stationary part is connected with the suspension 2 of automobile; Coordinated by bearing 6 between motor stator 1 with rotor 5, motor stator 1 is provided with motor winding, and rotor 5 is made up of the punching silicon steel sheet that stacks of permanent magnet and fixed permanent magnet.
Motor stator 1 is provided with the magnetism encoder 8 for detecting motor rotor position, magnetism encoder 8 contacts with being fixed on rotor and with the magnetic coder code-disc 9 of rotor Concentric rotation, and the application adopts magnetism encoder mode to detect motor rotor position.In a side end cap of the close automobile hanging of motor stator 1, be provided with liquid cooling structure 7, liquid cooling structure 7 is for being arranged on the water channel in end cap.
The electric machine controller 3 be integrated in one with motor is had in the arranged outside of the end cap being provided with liquid cooling structure 7, electric machine controller 3 and motor is made to share a set of liquid cooling structure 7, this end cap is also provided with the temperature sensor 4 for detecting liquid cooling structure 7 temperature, and temperature sensor 4 and magnetism encoder 8 are connected to electric machine controller 3.Electric machine controller detects motor liquid cooling structure temperature by temperature sensor.The power device of controller adopts IGBT, IPM, MOSFET power model.The application uses high pressure, large driven current density: power model can bear high pressure, big current, and is designed with good current protecting circuit.
The water channel of liquid cooling structure 7 is the distribution of tree ring shape.
Have an axial air-gap in the middle of motor stator 1 and rotor 5, bearing is arranged in this axial air-gap, and the iron core of motor stator forms by being with coil of strip to rush, and by its groove skew.Motor stator adopts skewed slot 10 structure, as shown in Figure 5, by stator slot relative to epitrochanterian permanent magnet skew skewed stator slot angle vertically, and skewed stator slot angular range (0-35 degree), thus effectively can suppress cogging torque.
Be designed with the harmony wave that skewed slot can slacken rotor, thus reduce the harmonic torque, electromagnetic noise and the supplementary load loss that are caused by these harmonic fields.
The stator of motor adopts liquid cooling structure, is positioned near automobile hanging side.Liquid cooling structure is processed by aluminium alloy brazing, and liquid cooling structure indoor design has water channel, for the circulation of cooling fluid, and very high heat-sinking capability.And motor stator and electric machine controller save space after sharing a set of cooling system.Stator terminal cover beat in bury gauge hole, in placing, bury temperature sensor, and draw holding wire.Electric machine controller is designed with temperature sensing circuit, Real-time Collection liquid cooling structure temperature.
The application have employed the vector control strategy based on digital signal processor, use the TMS320F28335 of TI as main control chip, gather three-phase current by the current sensor of controller, gather rotor-position by magnetic coder, utilize vector control algorithm to control motor torque and motor speed.The arithmetic speed of TMS320F28335 meets the requirement of real-time of vector control algorithm, and achieves the stepless time adjustment of automobile power, improves the efficiency of whole drive system, accuracy and reliability.
The present invention can manufacture in order to below method:
1 rotor assembly: rotor yoke adopts temperature differential method to coordinate and assembles, and adopts high-frequency heating apparatus to assemble, adopt high temperature resistant AB glue to be affixed on rotor by permanent magnet in assembling process.After rotor assembly completes, the inspection of balance school is carried out to rotor assembly, reaches the level of G2.5;
2 stator modules: stator casing water channel place uses in sealing glue and rubber 15 confidential paper sealing water channel and carries out voltage-withstand test, stator built-in line adopts coil inserting apparatus to carry out rule, strengthen consistency, after stator built-in line, adopt vacuum pressure impregnated with varnish to carry out the insulating varnish dipping lacquer of coil.After stator module completes, resistance is carried out to stator coil, inductance, the conventionally test such as withstand voltage.
3 system tests: after machine debugging, are connected with dynamometer machine, connection control device, cooling system, scape star 3000rpm no load test, specific rotation speeds, other tests of torsion-testing.
4 liquid cooling structures: liquid cooling structure adopts aluminum process processing, adopts numerical control processing technology, working fluid cold loop and location hole, adopt doctor welding.
Claims (6)
1. Integral direct-drive disc type wheel hub motor, is characterized in that: this motor comprises motor stator (1) and rotor (5), and motor stator (1) coordinates with rotor and forms motor body structure; Rotor portion is directly connected with automotive hub, and stationary part is connected with the suspension (2) of automobile; Coordinated by bearing (6) between motor stator (1) with rotor (5), motor stator (1) is provided with motor winding, and rotor (5) is made up of the punching silicon steel sheet that stacks of permanent magnet and fixed permanent magnet.
2. Integral direct-drive disc type wheel hub motor according to claim 1, it is characterized in that: on motor stator (1), be provided with the magnetism encoder (8) for detecting motor rotor position, magnetism encoder (8) contacts with being fixed on rotor and with the magnetic coder code-disc (9) of rotor Concentric rotation, in a side end cap of the close automobile hanging of motor stator (1), be provided with liquid cooling structure (7), liquid cooling structure (7) is for being arranged on the water channel in end cap.
3. Integral direct-drive disc type wheel hub motor according to claim 2, it is characterized in that: have the electric machine controller (3) be integrated in one with motor in the arranged outside of the end cap being provided with liquid cooling structure (7), electric machine controller (3) and motor is made to share a set of liquid cooling structure (7), this end cap is also provided with the temperature sensor (4) for detecting liquid cooling structure (7) temperature, and temperature sensor (4) and magnetism encoder (8) are connected to electric machine controller (3).
4. Integral direct-drive disc type wheel hub motor according to claim 3, is characterized in that: the water channel of liquid cooling structure (7) is the distribution of tree ring shape.
5. Integral direct-drive disc type wheel hub motor according to claim 3, it is characterized in that: in the middle of motor stator (1) and rotor (5), have an axial air-gap, bearing is arranged in this axial air-gap, the iron core of motor stator forms by being with coil of strip to rush, and motor stator adopts skewed slot (10) structure.
6. Integral direct-drive disc type wheel hub motor according to claim 3, it is characterized in that: electric machine controller (3) adopts rotor field-oriented vector control method, electric machine controller (3) Real-time Collection rotor current and utilize magnetism encoder (8) to gather rotor-position, controls Integral direct-drive disc type wheel hub motor torque and rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697450.0A CN104410237A (en) | 2014-11-27 | 2014-11-27 | Integral direct-drive disc-type wheel hub motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697450.0A CN104410237A (en) | 2014-11-27 | 2014-11-27 | Integral direct-drive disc-type wheel hub motor |
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| CN104410237A true CN104410237A (en) | 2015-03-11 |
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| CN201410697450.0A Pending CN104410237A (en) | 2014-11-27 | 2014-11-27 | Integral direct-drive disc-type wheel hub motor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997396A (en) * | 2016-07-28 | 2016-10-12 | 江苏若博机器人科技有限公司 | Dual-core three-wheel-drive free-lifting high-speed robot electric hospital bed controller |
| CN107425686A (en) * | 2017-09-26 | 2017-12-01 | 江苏雅迪科技发展有限公司宁波分公司 | Coreless disc type wheel hub motor |
| CN107567267A (en) * | 2017-10-27 | 2018-01-09 | 合肥巨动力系统有限公司 | A kind of electric machine controller integrated water-cooling radiator structure |
| CN107863914A (en) * | 2017-11-09 | 2018-03-30 | 天津英捷利汽车技术有限责任公司 | A kind of time constant of rotor of asynchronous machine self-adjusting system |
| CN107863831A (en) * | 2017-12-13 | 2018-03-30 | 冶金自动化研究设计院 | Large-power High-Speed disc type electric machine |
| CN111835147A (en) * | 2019-04-17 | 2020-10-27 | 山东交通学院 | Hub motor of electric automobile |
| CN112208558A (en) * | 2020-08-31 | 2021-01-12 | 上海安沛动力科技有限公司 | Wheel hub motor of rail chassis |
| CN113726067A (en) * | 2021-08-20 | 2021-11-30 | 珠海格力电器股份有限公司 | End cover structure and motor comprising same |
| CN114465384A (en) * | 2021-12-28 | 2022-05-10 | 黄石东贝电机有限公司 | Refrigerator compressor variable frequency motor rotor made of strip steel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1946432A1 (en) * | 2005-10-11 | 2008-07-23 | HONDA MOTOR CO., Ltd. | Electric motor |
| CN202014158U (en) * | 2011-03-16 | 2011-10-19 | 潍坊帅克新能源汽车技术有限公司 | Disk type motor hub assembly of electric automobile |
| CN102790473A (en) * | 2012-08-21 | 2012-11-21 | 渤海大学 | Disc-type permanent magnet motor with sealed cooling structure |
| CN203674894U (en) * | 2013-11-28 | 2014-06-25 | 长城汽车股份有限公司 | Motor cooling system and motor |
-
2014
- 2014-11-27 CN CN201410697450.0A patent/CN104410237A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1946432A1 (en) * | 2005-10-11 | 2008-07-23 | HONDA MOTOR CO., Ltd. | Electric motor |
| CN202014158U (en) * | 2011-03-16 | 2011-10-19 | 潍坊帅克新能源汽车技术有限公司 | Disk type motor hub assembly of electric automobile |
| CN102790473A (en) * | 2012-08-21 | 2012-11-21 | 渤海大学 | Disc-type permanent magnet motor with sealed cooling structure |
| CN203674894U (en) * | 2013-11-28 | 2014-06-25 | 长城汽车股份有限公司 | Motor cooling system and motor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997396A (en) * | 2016-07-28 | 2016-10-12 | 江苏若博机器人科技有限公司 | Dual-core three-wheel-drive free-lifting high-speed robot electric hospital bed controller |
| CN107425686A (en) * | 2017-09-26 | 2017-12-01 | 江苏雅迪科技发展有限公司宁波分公司 | Coreless disc type wheel hub motor |
| CN107567267A (en) * | 2017-10-27 | 2018-01-09 | 合肥巨动力系统有限公司 | A kind of electric machine controller integrated water-cooling radiator structure |
| CN107863914A (en) * | 2017-11-09 | 2018-03-30 | 天津英捷利汽车技术有限责任公司 | A kind of time constant of rotor of asynchronous machine self-adjusting system |
| CN107863831A (en) * | 2017-12-13 | 2018-03-30 | 冶金自动化研究设计院 | Large-power High-Speed disc type electric machine |
| CN111835147A (en) * | 2019-04-17 | 2020-10-27 | 山东交通学院 | Hub motor of electric automobile |
| CN112208558A (en) * | 2020-08-31 | 2021-01-12 | 上海安沛动力科技有限公司 | Wheel hub motor of rail chassis |
| CN113726067A (en) * | 2021-08-20 | 2021-11-30 | 珠海格力电器股份有限公司 | End cover structure and motor comprising same |
| CN114465384A (en) * | 2021-12-28 | 2022-05-10 | 黄石东贝电机有限公司 | Refrigerator compressor variable frequency motor rotor made of strip steel |
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Application publication date: 20150311 |
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