CN108667226A - A kind of flat three-phase permanent brshless DC motor movement - Google Patents
A kind of flat three-phase permanent brshless DC motor movement Download PDFInfo
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- CN108667226A CN108667226A CN201810562093.5A CN201810562093A CN108667226A CN 108667226 A CN108667226 A CN 108667226A CN 201810562093 A CN201810562093 A CN 201810562093A CN 108667226 A CN108667226 A CN 108667226A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Brushless Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
A kind of flat three-phase permanent brshless DC motor movement integrates three-phase permanent brshless DC motor ontology, Hall sensor, control movement, and direct current generator ontology includes stator core body, rotor core body, shaft, line packet, permanent magnet；Hall sensor includes three switching Hall components, the arc-shaped opening of three adjacent 120 degree of angles in the stator core body for installing Hall sensor at side and the Hall sensor guard housing on holder；The control core section includes PCB circuit board, wireless receiving chip, 315MHz SAW filters, microcontroller, driving chip, switching power source chip, VMOS pipes, signal condition chip, high frequency transformer, constantan sampling resistor, power inductor, motor body is connected as one with control core section by holder, movement diameter after assembly can be down to 55mm, movement thickness is no more than 25mm, is most saved for system, total optimization.
Description
Technical field
The present invention relates to a kind of flat three-phase permanent brshless DC motor movements, are mainly used in household electrical appliance, industry
Robot, Novel medical instrument and field of industrial automation control.
Background technology
In household electrical appliance, industrial robot, Novel medical instrument, industrial automation due to volume or installation dimension
Limitation, it is often necessary to the three-phase permanent brshless DC motor of energy-efficient, small size and flattening, but common three-phase permanent
Brshless DC motor is got used to using elongated long wheelbase structure, key dimension is true by following formula to reduce rotary inertia
It is fixed：
D2L=6.1*103/ (α iAB ＆) * P/n (m3)
In formula：D is armature diameter, and L is armature length, and P is to calculate power, and A is electric load, and B ＆ are magnetic loading, and n is specified turn
Speed, α i are pole embrace.
Above formula illustrates, after the rated power of three-phase permanent brshless DC motor, rated speed determine, the main ruler of motor
Very little size D2L depends on the selection of rotating speed n and motor electromagnetic load the AB ＆ of motor, and the rotating speed n of motor is higher, the ruler of motor
It is very little to accomplish very little；The value of electromagnetic load AB ＆ is higher, and the key dimension D2L of motor is with regard to smaller.It means that motor
Weight is lighter, and power density is also higher.
For design of electrical motor angle, high power density is realized, the material that magnetic property should be selected good is negative to improve magnetic
Lotus B ＆；Under conditions of ensureing to insulate, then selection is needed to select heat safe insulating materials, to improve the thermic load energy of motor
Power.
After selected motor material, the iron loss of motor increases with the increase of magnetic loading B ＆, and copper loss is with charge A and electricity
The product of current density J is directly proportional.So the size of motor can be reduced by increasing electromagnetic load AB ＆, it is just so-so since stator with
The loss of rotor surface unit area will increase, and to make motor temperature increase, efficiency be caused to decline.Therefore, it reasonably selects
The electromagnetic load AB ＆ and topological structure of motor are most important.
Under conditions of electromagnetic load AB ＆ products are certain, there are a kind of ratios of optimization between electric load A and magnetic loading B ＆
Example relationship：In general, in order to improve the commutation ability of motor, larger B ＆ and smaller A values are preferably selected；Operate in speed operation
Motor, iron loss is smaller, and B ＆ values can be selected greatly；The motor of high-speed cruising, iron loss is larger, and B ＆ values are certainly preferably small.
On the other hand, existing three-phase permanent brshless DC motor cannot all be used alone, with external controller with
Built-in Hall sensor matches.Wherein, Hall sensor plays detection rotor in three-phase permanent brshless DC motor
The effect of position of magnetic pole provides correctly commutation information for logic switching circuit, i.e., turns the position signal of rotor magnetic steel magnetic pole
It changes electric signal into, then goes the commutation conducting of control stator winding, and armature-reaction and the position change of Hall sensor are to suddenly
Your detection effect of signals is larger, directly affects the change of current of machine winding, causes motor torque ripple to bring noise.Cause
This, it is a by motor body, control movement, flat three that Hall sensor conjunction three is one it is an object of the invention to design
Phase permanent-magnet brushless direct current generator movement, then matching upper bearing (metal) can be as asynchronous machine, after direct-electrifying just with different casings
It can be used.
Invention content
Accordingly, the present invention proposes a kind of flat three-phase permanent brshless DC motor movement design scheme.In scheme, institute
Meaning three-phase permanent brshless DC motor ontology, which refers to, only has electromagnetic component and the three-phase permanent brushless direct-current without electronic control part
Motor（It does not include motor housing）, particular content is as follows：
A kind of flat three-phase permanent brshless DC motor movement, by three-phase permanent brshless DC motor ontology, control movement, suddenly
You form sensor three parts, are characterized by：
Three-phase permanent brshless DC motor ontology, control movement and the Hall sensor three is connected by holder respectively,
It is one to close three, forms a kind of flat three-phase permanent brshless DC motor movement, wherein：
The three-phase permanent brshless DC motor ontology includes rotor core body, stator core body, permanent magnet, shaft, line packet；
Line packet caulking groove is provided on the stator core body, line packet is embedded in line packet caulking groove, is provided on the stator core body
For fixing bracket hole, the external side edge of stator core there are four adjacent 90 degree of angles wedge-shaped side slot stator core body it is interior
There are three the arc-shaped openings of adjacent 120 degree of angles for side edge；
It is provided with permanent magnet caulking groove on the rotor core body, two adjacent permanent magnet caulking grooves in the edge of rotor core body
Between be provided with separation trough, permanent magnet burial is embedded into permanent magnet caulking groove；
One shaft disk of band in the shaft, the shaft disk are tightly embedded intp in rotor core body；
The control movement and Hall sensor part includes PCB circuit board, and the PCB circuit board is circular ring shape, above
Be welded with wireless receiving chip, 315MHz SAW filters, microcontroller, driving chip, switching power source chip, VMOS pipe,
Program downloads socket, Hall sensor, signal condition chip, high frequency transformer, constantan sampling resistor, power inductor, it is described
Hall sensor be three line dip switches type Hall elements, be provided in the PCB circuit board PCB circuit board mounting hole,
Hall-A wiring welding hole, Hall-B wiring welding hole, Hall-C wiring welding holes, VMOS pipes are that patch encapsulates, direct Surface Mount
It is welded in PCB circuit board；
The microcontroller is core devices, and I/O pins are connected with the input pin of driving chip, and the output of driving chip is drawn
Foot is connected with the grid of VMOS pipes, and 315MHz SAW filters are connected with wireless receiving chip, wireless receiving chip it is defeated
Go out pin with the serial pin on microcontroller to be connected, the sampled data of the constantan sampling resistor is located in advance through signal condition chip
The A/D pins that microcontroller is sent after reason, three position sensor signals from Hall sensor send the external interrupt of microcontroller respectively
Pin, the program downloads socket download pin with the program of microcontroller and are connected；
External dc power send one end of the input side of high frequency transformer, another termination switch electricity of the input side of high frequency transformer
The voltage signal of source chip, high frequency transformer outlet side is rectified, after power inductor and capacitor filtering, provides PCB circuit board
Power supply；
The holder is circular ring shape, is molded using heat-proof ABS engineering plastics, and circular inner liner plate is stretched out at central opening,
The bottom of holder there are three the Hall sensor guard housing of adjacent 120 degree of angles and the holder step of four adjacent 90 degree of angles,
The edge of holder step is provided with wedge groove, and centre is provided with bracket holes；
When installation, the circular ring shape PCB circuit board is put into holder, the wedge groove on the holder step and stator core
The wedge-shaped side slot of the outside edge of body is corresponding, the pins of three Hall sensors pass through after Hall sensor guard housing respectively with
Hall-A wiring welding hole, Hall-B wiring welding hole and Hall-C wiring welding holes in PCB circuit board connect, and the Hall after welding passes
Sensor is embedded in arc-shaped opening on stator core body again, and solder paste hydropexis, the magnetic induction of the Hall sensor is used in combination
Plane is against rotor core body, then, screw pass through after PCB circuit board mounting hole, the bracket holes on holder step with stator iron
Fixing bracket hole on heart body is linked together, and three are combined into one, the three-phase permanent brshless DC motor movement diameter after assembly down to
55mm, movement thickness（Together with shaft）No more than 25mm.
Further, the permanent magnet uses NdFeB material.
Further, the line packet uses oxygen-free copper-wire coiling.
Further, the constantan sampling resistor is bent to M shapes.
Further, the wireless receiving chip supports the manual wireless remote-cotnrolled device operations of 315MHz.
Description of the drawings
In order to clearly demonstrate the technical solution of the embodiment of the present invention, letter will be made to required attached drawing in embodiment below
Singly introduce.
A kind of flat three-phase permanent brshless DC motor movement outline drawings of Fig. 1 one；
A kind of flat three-phase permanent brshless DC motor movement outline drawings of Fig. 2 two；
A kind of flat three-phase permanent brshless DC motor movement exploded views of Fig. 3 one；
A kind of flat three-phase permanent brshless DC motor movement exploded views of Fig. 4 two；
A kind of flat three-phase permanent brshless DC motor movement PCB circuit board outline drawings of Fig. 5；
Fig. 6 holders and Hall element installation diagram；
Fig. 7 shafts, rotor core body, stator core body and line packet outline drawing；
Fig. 8 shafts, rotor core body, stator core body outline drawing.
Label declaration：
1 rotor core body
11 permanent magnet caulking grooves
12 separation troughs
2 stator core bodies
21 line packet caulking grooves
22 fixing bracket holes
23 arc-shaped openings
24 wedge-shaped side slots
3 permanent magnets
4 shafts
41 shaft disks
5 line packets
6 PCB circuit boards
60 wireless receiving chips
61 microcontrollers
62 driving chips
63 switching power source chips
64 SAW filters
65 VMOS are managed
66 program downloads sockets
67 Hall sensors
68 signal condition chips
69 high frequency transformers
690 Hall-A wiring welding holes
691 Hall-B wiring welding holes
692 Hall-C wiring welding holes
693 PCB circuit board mounting holes
694 constantan sampling resistors
695 power inductors
7 holders
71 circular inner liner plates
72 holder steps
73 bracket holes
74 wedge grooves
75 Hall sensor guard housings
Specific implementation mode
Below in conjunction with the accompanying drawings, illustrate the specific implementation mode of the present invention：
A kind of flat three-phase permanent brshless DC motor movement, by three-phase permanent brshless DC motor ontology, control movement and
Hall sensor three parts form, and are characterized by：
Three-phase permanent brshless DC motor ontology, control movement and the Hall sensor three is connected by holder 7 respectively,
It is one to close three, forms a kind of flat three-phase permanent brshless DC motor movement, wherein：
The three-phase permanent brshless DC motor ontology includes rotor core body 1, stator core body 2, permanent magnet 3, shaft 4,
Line packet 5；
Line packet caulking groove 21 is provided on the stator core body 2, line packet 5 is embedded in line packet caulking groove 21, the stator core body 2
On be provided with for fixing bracket hole 22, the outside edge of stator core body 2 there are four the wedge-shaped side slot 24 of adjacent 90 degree of angles,
There are three the arc-shaped openings 23 of adjacent 120 degree of angles for the inside edge of stator core body 2；
It is provided with permanent magnet caulking groove 11 on the rotor core body 1, two adjacent permanent magnets in the edge of rotor core body 1
Separation trough 12 is provided between caulking groove 11, the permanent magnet 3 burial is embedded into permanent magnet caulking groove 11；
One shaft disk 41 of band in the shaft 4, the shaft disk 41 are tightly embedded intp in rotor core body 1；
The control movement and Hall sensor part includes PCB circuit board 6, and the PCB circuit board 6 is circular ring shape, on
Face is welded with wireless receiving chip 60,315MHz SAW filters 64, microcontroller 61, driving chip 62, Switching Power Supply core
Piece 63, VMOS pipes 65, program downloads socket 66, Hall sensor 67, signal condition chip 68, high frequency transformer 69, constantan are adopted
Sample resistance 694, power inductor 695, the Hall sensor 67 is three line dip switches type Hall elements, described
PCB circuit board mounting hole 693, Hall-A wiring welding hole 690, Hall-B wiring welding hole 691, Hall-C are provided in PCB circuit board 6
Wiring welding hole 692, the VMOS pipes 65 encapsulate for patch, and direct Surface Mount is welded in PCB circuit board 6；
The microcontroller 61 is core devices, and I/O pins are connected with the input pin of driving chip 62, driving chip 62
Output pin is connected with the grid of VMOS pipes, and 315MHz SAW filters 64 are connected with wireless receiving chip 60, wirelessly connect
The output pin for receiving chip 60 is connected with the serial pin on microcontroller 61, the sampled data of the constantan sampling resistor 694
The A/D pins that microcontroller 61 is sent after the pretreatment of signal condition chip 68, three position sensings letter from Hall sensor 67
Number send the external interrupt pin of microcontroller 61 respectively, the program of the program downloads socket 66 and microcontroller 61 downloads pin phase
Even；
External dc power send one end of the input side of high frequency transformer 69, another termination of the input side of high frequency transformer 69 to open
The voltage signal of powered-down source chip 63,69 outlet side of high frequency transformer is rectified, after power inductor 695 and capacitor filtering, carries
For 6 power supply of PCB circuit board；
The holder 7 is circular ring shape, circular inner liner plate 71 is stretched out at central opening, there are three adjacent 120 degree for the bottom of holder 7
The holder step 72 of the Hall sensor guard housing 75 of angle and four adjacent 90 degree of angles, the edge of holder step 72 is provided with wedge
Shape slot 74, centre are provided with bracket holes 73；
When installation, the circular ring shape PCB circuit board 6 is put into holder 7, the wedge groove 74 on the holder step 72 with it is fixed
The wedge-shaped side slot 24 of the outside edge of sub- iron core 2 is corresponding, and the pin of three Hall sensors 67 passes through Hall sensor
It is welded respectively with Hall-A wiring welding hole 690, Hall-B wiring welding hole 691 and the Hall-C wiring in PCB circuit board 6 after guard housing 75
Hole 692 connects, and the Hall sensor 67 after welding is embedded on stator core body 2 again at arc-shaped opening 23, and welding glue is used in combination
Fixed, the magnetic induction plane of the Hall sensor 67 is against rotor core body 1, and then, screw is installed across PCB circuit board
It is linked together with the fixing bracket hole 22 on stator core body 2 after bracket holes 73 on hole 693, holder step 72, three are combined into one,
Three-phase permanent brshless DC motor movement diameter after assembly is down to 55mm, movement thickness（Together with shaft）No more than 25mm.
The permanent magnet 3 uses NdFeB material.
The line packet 5 uses oxygen-free copper-wire coiling.
The constantan sampling resistor 694 is bent to M shapes.
The wireless receiving chip 60 supports the manual wireless remote-cotnrolled device operations of 315MHz.
It should be pointed out that the Hall sensor 67 has following position sensing relationship：When rotor rotates, work as Hall
The magnetic induction plane monitoring-network of sensor 67 is strong to 3 magnetic induction of permanent magnet being buried in rotor core body 1 in permanent magnet caulking groove 11
When degree reaches triggering threshold values, the switch connection of Hall sensor 67；When magnetic induction intensity, which is reduced to, closes threshold values, hall sensing
The switch of device 67 disconnects；As the plane normal of magnetic induction density B and Hall sensor 67 θ at an angle, Hall biography is acted on
The effective magnetic field of sensor 67 is the component of its normal direction, i.e. Bcos θ, when Hall sensor 67 is when being equipped with angular deviation,
The effective magnetic field of Hall sensor will change, and the angle of deviation at this time is θ, and resulting error amount depends on this angle
The variation degree of flux density in θ and magnetosensitive sensillary area normal direction, since Hall sensor 67 is accurately embedded in stator core body 2
On arc-shaped opening 23 at, to overcome this rigging error.
The present invention has the advantages that：
1. the present invention is a collection three-phase permanent brshless DC motor ontology, Hall sensor and control movement close three be one three
Phase permanent-magnet brushless direct current generator movement, it changes the elongated topological structure pattern of conventional three-phase permanent-magnet brushless DC electric machine, knot
Tend to flattening on structure, electromechanics, position sensor, real-time control, online protection and wireless remote control technology are especially combined into one
Body after user assembles bearing and shell on movement, is powered and can be used, and assembles simple, provides a kind of low cost, can
The solution of large-scale production and a kind of flat three-phase permanent brshless DC motor movement convenient for maintenance.
2. present invention employs systems most to save, the System Engineering Design thought of total optimization, it is dedicated to small size and flat
The design of change, diameter is down to 55mm, movement thickness（Together with shaft）No more than 25mm, particularly suitable for various small-sized households
Electric appliance and Novel medical instrument and equipment.
3. the present invention is used as current monitoring element by constantan sampling resistor, exist to motor to strengthen control movement
Line is protected, and can be coped with locked rotor current, surge overcurrent in time, be played a very good protection to VMOS pipes.
4. present invention employs 315MHz wireless receiving patterns, three-phase permanent brshless DC motor can be operated, be stopped
Only, reversely, accelerate, slowing down carries out wireless control, concrete scheme is, the serial pin of microcontroller receives wireless from 315MHz
After the data for receiving chip output, operation is decoded through it, three-phase permanent brushless direct current motor drive circuit can be operated, be stopped
Only, reversely, accelerate, control of slowing down, to need not separately plus control line.
In the present invention, inventor is depicted without specific motor housing, if to be loaded into the motor of third party's offer
In shell, then the inner band wedge shape rib of the outer motor housing matched is required, in this way, the three-phase permanent brshless DC motor machine
Core, can be consistently by the wedge-shaped side slot 24 of wedge groove 74 and the outside edge of stator core body 2 on holder step 72
It is tightly inserted into the motor housing with inside wedge shape rib.
In the present invention, for inventor also without being embedded in bearing on the rotating shaft, the intention casted a brick to attract jade is fairly obvious：If
This three-phase permanent brshless DC motor movement mixes different shell and Digiplex again, so that it may to make various wireless remotes
The soy bean milk making machine of control type, juice extractor, blender, massage device, ventilation fan, electric fan, centrifuge, electric shredder, automatic sweeping machine,
Electric mop.In short, how excellent imagination have, the world of application just has mostly abundant.
Above-mentioned is the preferred embodiments of the invention.In this specification, apply specific case to the principle of the present invention and
Embodiment is expounded, and is only used for helping to understand core concept of the present invention, be should not be construed as limiting the invention.Institute
The technical staff in category field understands, is not departing from the spirit and scope of the present invention defined by appended claims,
Various change to made by the present invention in form and details, belongs to protection scope of the present invention.
Claims (5)
1. a kind of flat three-phase permanent brshless DC motor movement, by three-phase permanent brshless DC motor ontology, control movement
And Hall sensor three parts composition, it is characterised in that：
The three-phase permanent brshless DC motor ontology, control movement, Hall sensor three pass through holder respectively（7）Even
It connects, it is one to close three, forms a kind of flat three-phase permanent brshless DC motor movement, wherein：
The three-phase permanent brshless DC motor ontology includes rotor core body（1）, stator core body（2）, permanent magnet（3）、
Shaft（4）, line packet（5）；
The stator core body（2）On be provided with line packet caulking groove（21）, line packet（5）Embedded line packet caulking groove（21）In, described determines
Sub- iron core（2）On be provided with for fixing bracket hole（22）, stator core body（2）Outside edge there are four adjacent 90 degree press from both sides
The wedge-shaped side slot at angle（24）, stator core body（2）Inside edge there are three adjacent 120 degree of angles arc-shaped opening
（23）；
The rotor core body（1）On be provided with permanent magnet caulking groove（11）, in rotor core body（1）Two of edge it is adjacent
Permanent magnet caulking groove（11）Between be provided with separation trough（12）, the permanent magnet（3）Burial is embedded into permanent magnet caulking groove（11）In；
The shaft（4）One shaft disk of upper band（41）, the shaft disk（41）It is tightly embedded intp rotor core body
（1）In；
The control movement and Hall sensor part includes PCB circuit board（6）, the PCB circuit board（6）For annulus
Shape is welded with wireless receiving chip above（60）, 315MHz SAW filters（64）, microcontroller（61）, driving chip
（62）, switching power source chip（63）, VMOS pipe（65）, program downloads socket（66）, Hall sensor（67）, signal condition chip
（68）, high frequency transformer（69）, constantan sampling resistor（694）, power inductor（695）, the Hall sensor（67）For
Three line dip switches type Hall elements, the PCB circuit board（6）On be provided with PCB circuit board mounting hole（693）、Hall-A
Wiring welding hole（690）, Hall-B wiring welding holes（691）, Hall-C wiring welding holes（692）, the described VMOS pipes（65）For patch
Encapsulation, direct Surface Mount are welded on PCB circuit board（6）On；
The microcontroller（61）For core devices, I/O pins and driving chip（62）Input pin be connected, driving chip
（62）Output pin be connected with the grid of VMOS pipes, 315MHz SAW filters（64）With wireless receiving chip（60）
It is connected, wireless receiving chip（60）Output pin and microcontroller（61）On serial pin be connected, the described constantan sampling electricity
Resistance（694）Sampled data through signal condition chip（68）Microcontroller is sent after pretreatment（61）A/D pins, come from hall sensing
Device（67）Three position sensor signals send microcontroller respectively（61）External interrupt pin, the program downloads socket（66）
With microcontroller（61）Program download pin be connected；
External dc power send high frequency transformer（69）Input side one end, high frequency transformer（69）Input side the other end
Connect switching power source chip（63）, high frequency transformer（69）The voltage signal of outlet side is rectified, power inductor（695）And capacitance
After filtering, PCB circuit board is provided（6）Power supply；
The holder（7）It for circular ring shape, is molded using heat-proof ABS engineering plastics, circular inner liner is stretched out at central opening
Plate（71）, holder（7）Bottom there are three adjacent 120 degree of angles Hall sensor guard housing（75）And four adjacent 90 degree of folders
The holder step at angle（72）, holder step（72）Edge be provided with wedge groove（74）, centre is provided with bracket holes（73）；
When installation, the circular ring shape PCB circuit board（6）It is put into holder（7）In, the holder step（72）On wedge groove
（74）With stator core body（2）Outside edge wedge-shaped side slot（24）It is corresponding, three Hall sensors（67）Pin
Across Hall sensor guard housing（75）Afterwards respectively with PCB circuit board（6）On Hall-A wiring welding holes（690）, Hall-B wiring
Welding hole（691）And Hall-C wiring welding holes（692）Connect, the Hall sensor after welding（67）It is embedded in stator core body again（2）
Upper arc-shaped opening（23）Place, is used in combination solder paste hydropexis, the Hall sensor（67）Magnetic induction plane against rotor
Iron core（1）, then, screw passes through PCB circuit board mounting hole（693）, holder step（72）On bracket holes（73）Afterwards with it is fixed
Sub- iron core（2）On fixing bracket hole（22）It is linked together, three are combined into one, the three-phase permanent brshless DC motor machine after assembly
Core diameter is no more than 25mm down to 55mm, complete machine thickness.
2. a kind of flat three-phase permanent brshless DC motor movement according to claim 1, it is characterised in that：Described
Permanent magnet（3）Using NdFeB material.
3. a kind of flat three-phase permanent brshless DC motor movement according to claim 1, it is characterised in that：Described
Line packet（5）Using oxygen-free copper-wire coiling.
4. a kind of flat three-phase permanent brshless DC motor movement according to claim 1, it is characterised in that：Described
Constantan sampling resistor（694）It is bent to M shapes.
5. a kind of flat three-phase permanent brshless DC motor movement according to claim 1, it is characterised in that：Described
Wireless receiving chip（60）Support the manual wireless remote-cotnrolled device operations of 315MHz.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562093.5A CN108667226B (en) | 2018-06-04 | 2018-06-04 | Flat three-phase permanent magnet brushless direct current motor core |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562093.5A CN108667226B (en) | 2018-06-04 | 2018-06-04 | Flat three-phase permanent magnet brushless direct current motor core |
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| Publication Number | Publication Date |
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| CN108667226A true CN108667226A (en) | 2018-10-16 |
| CN108667226B CN108667226B (en) | 2020-02-14 |
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| JP2019047563A (en) * | 2017-08-30 | 2019-03-22 | 株式会社デンソー | Brushless motor |
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Effective date of registration: 20230920 Address after: No. 29 Jinqiao Road, Zone A, Jianqiao Industrial Park, Dadukou District, Chongqing, 400000 Patentee after: Chongqing Huarui Miki Electrical Co.,Ltd. Address before: 410003 Hunan province Changsha Kaifu District Sifangping teachers village 5 Building No. 402 Patentee before: Peng Xinan |