CN105634232A - Brushless direct-current motor for electric vehicle - Google Patents
Brushless direct-current motor for electric vehicle Download PDFInfo
- Publication number
- CN105634232A CN105634232A CN201610053513.8A CN201610053513A CN105634232A CN 105634232 A CN105634232 A CN 105634232A CN 201610053513 A CN201610053513 A CN 201610053513A CN 105634232 A CN105634232 A CN 105634232A
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- Prior art keywords
- outer rotor
- electric vehicle
- motor
- design
- cylindrical shell
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
A permanent magnet brushless direct-current motor with high efficiency, high power density and good speed control performance is gradually becoming a first-choice motor used in electric vehicle transmission. A brushless direct-current motor for an electric vehicle is applicable to the electrical vehicle. A motor body comprises an outer rotor assembly, an inner stator assembly and a motor shaft; the outer rotor assembly comprises an outer rotor cylindrical shell; a front cover and a rear cover which are fastened and connected with the outer rotor cylindrical shell are arranged at the front end and the rear end of the outer rotor cylindrical shell; two pairs of permanent magnet rare earth units are adhered onto the inner wall of the outer rotor cylindrical shell along the direction of the motor shaft; the outer rotor is rotatably connected with the rotor motor through a bearing; the inner stator assembly comprises two pairs of stator iron core lamination stacks which are arranged in one-to-one correspondence with the permanent magnet rare earth units; a stator winding is arranged at the end part of each pair of stator iron core lamination stacks; and an array water-cooling radiating fins are distributed on the rear wall of a radiating rear shell.
Description
Technical field
The invention belongs to design of electrical motor and manufacture field, permanent-magnet electric automobile DC brushless motor used for electric vehicle is provided especially.
Background technology
The method for designing of permanent-magnet brushless DC electric machine generally has the method for designing of Electromagnetic Desigu Method and Electromagnetic field. That uses more at present remains traditional Electromagnetic Desigu Method, namely calculates complete design with electromagnetism, again the design completed is carried out magnetic FEM check, and appropriately adjust when having ready conditions. Electromagnetic Desigu Method is the classical basic design method of permanent-magnet brushless DC electric machine. Its mentality of designing is: is required to determine rotor structure by technology, rotor structure and permanent magnet performance determines magnetic loading B-, performance requirement and radiating condition determine electric load A, determine basic size D, L finally according to electromagnetic load. The advantage of the method is clear thinking, parameter is determined, scheme easily arranges; Shortcoming is that empirical parameter is many, and computational accuracy is relatively low. The method for designing of Electromagnetic field is based on external characteristic, and magnetic circuit parameter finite element analysis obtains, and circuit parameter calculates can carry out analytical calculation with Matlab software programming by circuit methods. Its advantage is magnetic field analysis precision higher (General Two-Dimensional magnetic field calculation can meet design requirement), shortcoming be load magnetic field when analyzing the amplitude of stator equivalent current and position indefinite, so the calculating of magnetic field analysis and circuit must combine. Summary of the invention
The first-selected motor that permanent-magnet brushless DC electric machine has efficiently, high power density and good speed adjusting performance are increasingly becoming in electric automobile transmission to use.
DC brushless motor development process used for electric vehicle of the present invention contains system motor principle design, controller principle designs, system matches designs, PCB design, overall construction design, Realization of Cable Systems Design, overall heating design, motor Design Processing, PCB cooperation processing, PCB welding and debugging single board, radiator is processed, housing is processed, copper bar is processed, parts enter factory and process inspection during manufacture, model machine general assembly, systemic-function is debugged, outfield power bench test, entrucking road conditions are tested, checking.
A kind of DC brushless motor used for electric vehicle, suitable in electric automobile, motor body includes outer rotor component, inner stator assembly and motor shaft, outer rotor component includes outer rotor cylindrical shell, outer rotor cylindrical shell rear and front end is provided with the protecgulum and bonnet that are fastenedly connected with it, the inwall of outer rotor cylindrical shell is bonded with 2 pairs of permanent magnetism rare earth unit along motor shaft direction, outer rotor is connected by bearing is rotating with motor shaft, inner stator assembly includes stator core lamination, inner-stator iron core lamination is 2 pairs and arranges with permanent magnetism rare earth unit one_to_one corresponding, the end of stator core lamination is provided with stator winding, on the rear wall of heat radiation back cover, distribution has array water-cooling sheet.
Being also equipped with controller on radiator installed surface, controller is mainly made up of circuit, hall position sensor, Hall current sensor and control cabinet.
Circuit is made up of input filter, IGBT power model and IGBT power driving device; Controller box is made up of aviation plug interface board, motherboard, panel and power panel.
Described controller has a CAN2.0B Control on Communication, and the digital control mouth of I/O of 3 as opening/stop, reversing, skidding ancillary control function, and 1 simulation accelerated signal input. Controller has the defencive function of overcurrent, overvoltage and under-voltage.
The digital control mouth of I/O of 3 be specially 24VDC, 10mA drive, high level effective; The input of simulation accelerated signal is 0��10V.
Meet following index request:
Electric motor starting overcurrent��3 times under a, band carrier strip part, programmable locked rotor current��1800A;
B, current of electric steady state measurement precision��2%;
C, motor speed measurement precision��1%;
D, supply voltage certainty of measurement��2%;
E, communication protocol adopt multiple command response pattern, with the exact operations of guarantee department Ore-controlling Role.
Electric machine structure aspect adopts forced air cooling and two kinds of structures of natural cooling, highlights the compactedness of structure and uses new material to make motor can play maximum power density in a large number. Adopting permanent magnetism rare earth DC brushless motor structure mode used for electric vehicle, body design adopts poly-magnetic and SMD two kinds of magnetic steel structures and stator line bag to concentrate winding and fractional-slot structure, eliminates as much as the location torque that magnet steel produces. Run on three-phase six State-output; Controller is made up of digital signal processing unit, position detection (Hall element or rotation become) unit, power drive unit and energy feedback and brake unit. Adopt in protection and be entirely sealed waterproof construction, make motor be suitable for automobile and work in different environments.
Along with permanent-magnet brushless DC electric machine is increasingly widely applied, some special occasions, as space industry is just higher to the performance requirement of motor, so more accurate method for designing should be taked to meet requirement. The most frequently used field circuit coupling design method is to carry out finite element no-load magnetic field check after Electromagnetic Design.
A kind of CAD design method of DC brushless motor used for electric vehicle, comprises the steps:
A, design permanent-magnet brushless DC electric machine with Electromagnetic Desigu Method, it is determined that motor basic structure and size;
B, calculate unloaded magnetic circuit by Finite Element Method, check the magnetic circuit result of calculation of Electromagnetic Design;
C, use Finite Element Method and Fourier's analysis method calculate Kf, Kd, Kq, Kad, Kaq, check the relevant parameter in Electromagnetic Design;
D, calculate Xad, Xaq by Finite Element Method, check Xad, Xaq of Electromagnetic Design;
E, when the calculating error of above-mentioned steps reaches required precision, solve phasor diagram, it is determined that �� angle, the amplitude of IN and position, carry out finite element load magnetic field calculating, check load Operating Point of Permanent Magnet and the operating characteristic result of calculation of Electromagnetic Design;
F, carry out simulation result with Matlab software programming, further the correctness of check and correction design.
The ripe various changes of magnetic field of finite element analysis and Matlab Electromagnetic Desigu Method, thinking is used to design rare-earth permanent-magnet electric machine, and large power, electrically electrical automobile DC brushless motor controller design experiences, premised on high reliability, complex optimum cost, meet industry standard fully, develop high quality of products efficiently.
High-performance Ne-Fe-B permanent-magnet electric automobile DC brushless motor, adapt to the position-detection sensor of magnetic Hall or rotary transformer, controlled by high-power IGBT electronic commutation, realize that motor is soft opens (stopping) and function of stepless speed regulation, it is to avoid the impact to power-supply battery of the big electric current and the electromagnetic interference to other electronic equipment when starting; Relative direct current generator, decreases mechanical commutation carbon brush and slip ring, the advantage such as (output/weight) and high efficiency that its simple in construction, reliability are high, volume is little, specific power is big.
Accompanying drawing explanation
Below in conjunction with Figure of description, the present invention is described in further details:
Fig. 1 is DC brushless motor side-looking structural representation used for electric vehicle;
Fig. 2 is the main TV structure schematic diagram of DC brushless motor used for electric vehicle;
Fig. 3 is DC brushless motor side elevational cross-section structural representation used for electric vehicle;
Fig. 4 is controller installation diagram;
Fig. 5 is external characteristic result magnetic circuit figure;
Fig. 6 is external characteristic result magnetic circuit figure.
Detailed description of the invention
Reference numeral illustrates:
1 outer rotor component, 2 inner stator assemblies, 3 motor shafts, 101 outer rotor cylindrical shells, 102 protecgulums, 103 bonnets, 104 permanent magnetism rare earth unit, 105 bearings, 106 array water-cooling sheets, 107 controllers, 108 Hall shielding lines, 109 screws.
Embodiment 1
The first-selected motor that permanent-magnet brushless DC electric machine has efficiently, high power density and good speed adjusting performance are increasingly becoming in electric automobile transmission to use.
DC brushless motor development process used for electric vehicle of the present invention contains system motor principle design, controller principle designs, system matches designs, PCB design, overall construction design, Realization of Cable Systems Design, overall heating design, motor Design Processing, PCB cooperation processing, PCB welding and debugging single board, radiator is processed, housing is processed, copper bar is processed, parts enter factory and process inspection during manufacture, model machine general assembly, systemic-function is debugged, outfield power bench test, entrucking road conditions are tested, checking.
A kind of DC brushless motor used for electric vehicle, suitable in electric automobile, motor body includes outer rotor component, inner stator assembly and motor shaft, outer rotor component includes outer rotor cylindrical shell, outer rotor cylindrical shell rear and front end is provided with the protecgulum and bonnet that are fastenedly connected with it, the inwall of outer rotor cylindrical shell is bonded with 2 pairs of permanent magnetism rare earth unit along motor shaft direction, outer rotor is connected by bearing is rotating with motor shaft, inner stator assembly includes stator core lamination, inner-stator iron core lamination is 2 pairs and arranges with permanent magnetism rare earth unit one_to_one corresponding, the end of stator core lamination is provided with stator winding, on the rear wall of heat radiation back cover, distribution has array water-cooling sheet.
Being also equipped with controller on radiator installed surface, controller is mainly made up of circuit, hall position sensor, Hall current sensor and control cabinet.
Circuit is made up of input filter, IGBT power model and IGBT power driving device; Controller box is made up of aviation plug interface board, motherboard, panel and power panel.
Described controller has a CAN2.0B Control on Communication, and the digital control mouth of I/O of 3 as opening/stop, reversing, skidding ancillary control function, and 1 simulation accelerated signal input. Controller has the defencive function of overcurrent, overvoltage and under-voltage.
The digital control mouth of I/O of 3 be specially 24VDC, 10mA drive, high level effective; The input of simulation accelerated signal is 0��10V.
Meet following index request:
Electric motor starting overcurrent��3 times under a, band carrier strip part, programmable locked rotor current��1800A;
B, current of electric steady state measurement precision��2%;
C, motor speed measurement precision��1%;
D, supply voltage certainty of measurement��2%;
E, communication protocol adopt multiple command response pattern, with the exact operations of guarantee department Ore-controlling Role.
Electric machine structure aspect adopts forced air cooling and two kinds of structures of natural cooling, highlights the compactedness of structure and uses new material to make motor can play maximum power density in a large number. Adopting permanent magnetism rare earth DC brushless motor structure mode used for electric vehicle, body design adopts poly-magnetic and SMD two kinds of magnetic steel structures and stator line bag to concentrate winding and fractional-slot structure, eliminates as much as the location torque that magnet steel produces. Run on three-phase six State-output; Controller is made up of digital signal processing unit, position detection (Hall element or rotation become) unit, power drive unit and energy feedback and brake unit.
Along with permanent-magnet brushless DC electric machine is increasingly widely applied, some special occasions, as space industry is just higher to the performance requirement of motor, so more accurate method for designing should be taked to meet requirement. The most frequently used field circuit coupling design method is to carry out finite element no-load magnetic field check after Electromagnetic Design.
A kind of CAD design method of DC brushless motor used for electric vehicle, comprises the steps: a, designs permanent-magnet brushless DC electric machine with Electromagnetic Desigu Method, it is determined that motor basic structure and size; B, calculate unloaded magnetic circuit by Finite Element Method, check the magnetic circuit result of calculation of Electromagnetic Design; C, use Finite Element Method and Fourier's analysis method calculate Kf, Kd, Kq, Kad, Kaq, check the relevant parameter in Electromagnetic Design; D, calculate Xad, Xaq by Finite Element Method, check Xad, Xaq of Electromagnetic Design; E, when the calculating error of above-mentioned steps reaches required precision, solve phasor diagram, it is determined that �� angle, the amplitude of IN and position, carry out finite element load magnetic field calculating, check load Operating Point of Permanent Magnet and the operating characteristic result of calculation of Electromagnetic Design;
F, carry out simulation result with Matlab software programming, further the correctness of check and correction design.
The ripe various changes of magnetic field of finite element analysis and Matlab Electromagnetic Desigu Method, thinking is used to design rare-earth permanent-magnet electric machine, and large power, electrically electrical automobile DC brushless motor controller design experiences, premised on high reliability, complex optimum cost, meet industry standard fully, develop high quality of products efficiently.
High-performance Ne-Fe-B permanent-magnet electric automobile DC brushless motor, adapt to the position-detection sensor of magnetic Hall or rotary transformer, controlled by high-power IGBT electronic commutation, realize that motor is soft opens (stopping) and function of stepless speed regulation, it is to avoid the impact to power-supply battery of the big electric current and the electromagnetic interference to other electronic equipment when starting; Relative direct current generator, decreases mechanical commutation carbon brush and slip ring, the advantage such as (output/weight) and high efficiency that its simple in construction, reliability are high, volume is little, specific power is big.
Above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this. All equivalences made according to spirit of the invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. a DC brushless motor used for electric vehicle, suitable in electric automobile, it is characterized in that: motor body includes outer rotor component, inner stator assembly and motor shaft, outer rotor component includes outer rotor cylindrical shell, outer rotor cylindrical shell rear and front end is provided with the protecgulum and bonnet that are fastenedly connected with it, the inwall of outer rotor cylindrical shell is bonded with 2 pairs of permanent magnetism rare earth unit along motor shaft direction, outer rotor is connected by bearing is rotating with motor shaft, inner stator assembly includes stator core lamination, inner-stator iron core lamination is 2 pairs and arranges with permanent magnetism rare earth unit one_to_one corresponding, the end of stator core lamination is provided with stator winding, on the rear wall of heat radiation back cover, distribution has array water-cooling sheet.
2. the DC brushless motor used for electric vehicle described in claim 1, it is characterised in that: being also equipped with controller on described radiator installed surface, controller is mainly made up of circuit, hall position sensor, Hall current sensor and control cabinet.
3. the DC brushless motor used for electric vehicle described in claim 2, it is characterised in that: circuit is made up of input filter, IGBT power model and IGBT power driving device; Controller box is made up of plug interface plate, motherboard, panel and power panel.
4. the DC brushless motor used for electric vehicle described in claim 3, it is characterized in that: described controller has CAN2.0B Control on Communication, with the I/O of 3 digital control mouth as opening/stop, reversing, skidding ancillary control function, and 1 simulation accelerated signal input.
5. the DC brushless motor used for electric vehicle described in claim 4, it is characterised in that: the digital control mouth of I/O of 3 be specially 24VDC, 10mA drive, high level effective; The input of simulation accelerated signal is 0��10V.
6. according to one of them described DC brushless motor used for electric vehicle of claim 1 to 5, it is characterised in that: meet following index request:
Electric motor starting overcurrent��3 times when a, bringing onto load, programmable locked rotor current��1800A;
B, current of electric steady state measurement precision��2%;
C, motor speed measurement precision��1%;
D, supply voltage certainty of measurement��2%;
E, communication protocol adopt multiple command response pattern, to ensure the exact operations of electric-control system.
7. the CAD design method of a DC brushless motor used for electric vehicle, it is characterised in that: a, design permanent-magnet brushless DC electric machine with Electromagnetic Desigu Method, it is determined that motor basic structure and size;
B, calculate unloaded magnetic circuit by Finite Element Method, check the magnetic circuit result of calculation of Electromagnetic Design;
C, use Finite Element Method and Fourier's analysis method calculate Kf, Kd, Kq, Kad, Kaq, check the relevant parameter in Electromagnetic Design;
D, calculate Xad, Xaq by Finite Element Method, check Xad, Xaq of Electromagnetic Design;
E, when the calculating error of above-mentioned steps reaches required precision, solve phasor diagram, it is determined that �� angle, the amplitude of IN and position, carry out finite element load magnetic field calculating, check load Operating Point of Permanent Magnet and the operating characteristic result of calculation of Electromagnetic Design;
F, carry out simulation result with Matlab software programming, further the correctness of check and correction design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610053513.8A CN105634232A (en) | 2016-01-26 | 2016-01-26 | Brushless direct-current motor for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610053513.8A CN105634232A (en) | 2016-01-26 | 2016-01-26 | Brushless direct-current motor for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105634232A true CN105634232A (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610053513.8A Pending CN105634232A (en) | 2016-01-26 | 2016-01-26 | Brushless direct-current motor for electric vehicle |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013062971A (en) * | 2011-09-14 | 2013-04-04 | Panasonic Corp | Motor drive |
| CN103208897A (en) * | 2013-04-27 | 2013-07-17 | 佛山市顺德区苇源电器有限公司 | Brushless direct current motor |
| CN103812394A (en) * | 2012-11-08 | 2014-05-21 | 牛玉琴 | Brushless direct-current motor control system |
-
2016
- 2016-01-26 CN CN201610053513.8A patent/CN105634232A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013062971A (en) * | 2011-09-14 | 2013-04-04 | Panasonic Corp | Motor drive |
| CN103812394A (en) * | 2012-11-08 | 2014-05-21 | 牛玉琴 | Brushless direct-current motor control system |
| CN103208897A (en) * | 2013-04-27 | 2013-07-17 | 佛山市顺德区苇源电器有限公司 | Brushless direct current motor |
Non-Patent Citations (1)
| Title |
|---|
| 徐军: "基于场路间接耦合的BLDCM的CAD系统开发", 《万方学位论文》 * |
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Application publication date: 20160601 |