Controlled-feedback brushless DC motor, control method and its application

Abstract

The present invention relates to the technical field of motors, in particular to a control feedback type brushless DC motor, a control method and its application. By providing a heat dissipation hole body on one side of the end cover and cooperating with a heat dissipation auxiliary component, the heat inside the brushless DC motor main body is dissipated. When the temperature rises, the cooling auxiliary fan is started. The air flow is driven by the provided cooling auxiliary fan, so that the air flow enters the auxiliary tube body from the connecting air tube, and then enters the inner cavity of the brushless DC motor main body from the wire outlet hole. This process forms a heat dissipation circulation effect with the heat dissipation hole body, improving its heat dissipation efficiency. When the temperature inside the brushless DC motor main body decreases, the cooling auxiliary fan is turned off, and the heat dissipation work is carried out separately through the cooperation of the provided heat dissipation hole body and the heat dissipation auxiliary component, which has better flexibility in heat dissipation work; it can also prevent external impurities and moisture from entering the brushless DC motor main body from the heat dissipation hole body.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a control feedback type brushless DC motor, a control method and its applications. Background Art

[0002] The existing Chinese authorized patent document with the publication number CN205864148U discloses an ice crusher motor. Its solution includes a stator core, on which stator enameled wires are provided via masking tape, a rotor is arranged inside the stator core, front end covers and rear end covers are respectively arranged at both ends of the rotor via bearings. The front end cover includes a front end cover body, on which a front fixing edge fitting on the front end face of the stator core is provided, and a front covering edge fitting on the outside of the stator core is provided on the outside of the front fixing edge. The rear end cover includes a rear end cover body, on which a rear fixing edge fitting on the rear end face of the stator core is provided, and a rear covering edge fitting on the outside of the stator core is provided on the outside of the rear fixing edge. The front fixing edge, the stator core and the rear fixing edge are connected via bolts with spring washers; a carbon brush sleeve is arranged on the side wall of the rear end cover body, a carbon brush is arranged inside the carbon brush sleeve, a fan located outside the rear end cover is arranged at the rear end of the rotor, and a connecting shaft is arranged at the front end of the rotor; two leads are connected to the stator enameled wires, and heat shrinkable tubes are arranged at the connection positions of each lead and the stator enameled wire.

[0003] For the above solution and the brushless DC motors for ice crushers in the prior art, they are generally enclosed, unlike large motors which are also provided with heat dissipation holes at the tail end. Therefore, for small-sized brushless DC motors, the heat generated in the inner cavity during operation cannot be dissipated in time and effectively, and it will inevitably affect the normal operation of their work in the case of long-term operation; however, in order to have a certain heat dissipation function, some do not block the connecting wires arranged at the tail end of the motor, leaving a certain gap for heat dissipation. On the one hand, the heat dissipation effect is poor, and on the other hand, there is also a possibility that external impurities, moisture, etc. will enter, which is not worth the candle.

[0004] Therefore, the present invention provides a control feedback type brushless DC motor, a control method and its applications to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a control feedback type brushless DC motor, a control method and its applications to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A control feedback type brushless DC motor includes a brushless DC motor main body, a front end cover is arranged at the front end of the brushless DC motor main body, and an output shaft is arranged at the center position of the front end cover. A tail end cover is arranged at the tail end of the brushless DC motor main body. An outlet hole is arranged on one side of the tail end cover, and the tail end cover is connected to a connecting wire, and the connecting wire passes through the outlet hole;

[0007] The tail end cover is provided with a heat dissipation hole body on the side symmetrical to the wire outlet hole, and the heat dissipation hole body is connected to the heat dissipation auxiliary component. The wire outlet hole is connected to the matching component, and installation thread grooves are symmetrically arranged on the edge sides of the orifices of both the wire outlet hole and the heat dissipation hole body.

[0008] Preferably, the heat dissipation auxiliary component includes a first ventilation half tube body, a second ventilation half tube body, a first mounting plate head, a first baffle plate, a second baffle plate, a connecting rod, a first housing cover, and auxiliary accessories; first mounting plate heads are fixedly arranged on the outer sides of both the first ventilation half tube body and the second ventilation half tube body, and both the first ventilation half tube body and the second ventilation half tube body are fixedly arranged by screws. First baffle plates are fixedly arranged at equal intervals on the inner side wall of the second ventilation half tube body, and second baffle plates are fixedly arranged at equal intervals on the inner side wall of the first ventilation half tube body.

[0009] Preferably, the first ventilation half tube body and the second ventilation half tube body are set to have the same length, and the two are butted to form a ventilation tube body, and one end of the ventilation tube body is adaptively inserted into the heat dissipation hole body.

[0010] Preferably, the second ventilation half tube body is fixedly arranged at one end of the connecting rod, and the other end of the connecting rod is fixedly arranged with a first housing cover.

[0011] Preferably, the second baffle plate and the first baffle plate are arranged in an interleaved manner, and auxiliary accessories are arranged on one side of both the second baffle plate and the first baffle plate. The auxiliary accessories include an adhesion wool pad, a spherical surface groove, an auxiliary through hole, and an auxiliary convex ring body; the adhesion wool pad is fixedly arranged on one side of the second baffle plate and the first baffle plate, and spherical surface grooves are uniformly arranged on the side wall of the adhesion wool pad. An auxiliary through hole is arranged at the center position of the spherical surface groove, and the auxiliary through hole extends through the second baffle plate, and the first baffle plate is also penetrated by the auxiliary through hole. An auxiliary convex ring body is fixedly arranged at the edge side position of the notch of the spherical surface groove.

[0012] Preferably, the matching component includes a first auxiliary half tube body, a second auxiliary half tube body, a second mounting plate head, a communicating air tube, a second housing cover, an auxiliary structure, and a support auxiliary component; second mounting plate heads are fixedly arranged on the outer side walls of both the first auxiliary half tube body and the second auxiliary half tube body, and the second mounting plate heads are fixedly arranged by screws. The first auxiliary half tube body and the second auxiliary half tube body are set to have the same number of groups and the same length, and the two are butted to form an auxiliary tube body. One end of the auxiliary tube body is adaptively inserted into the wire outlet hole. The second auxiliary half tube body is arranged at one end of the communicating air tube, and the two are communicated. The other end of the communicating air tube is fixedly arranged with a second housing cover, and the communicating air tube is communicated with the second housing cover. The second housing cover and the first housing cover are set to have the same number of groups, and the two are butted to form a hemispherical housing cover.

[0013] Preferably, the auxiliary structure includes a soft hair body, a diversion inclined plate piece, and a wire bundling groove; the soft hair body is uniformly arranged on the inner sides of both the first auxiliary half tube body and the second auxiliary half tube body, and the positions of the soft hair bodies on the inner sides of the first auxiliary half tube body and the second auxiliary half tube body correspond to each other. A diversion inclined plate piece is fixedly arranged on the inner side of one end of the second auxiliary half tube body, and a wire bundling groove is arranged on the diversion inclined plate piece.

[0014] Preferably, the support auxiliary component includes a cap body, a wire wrapping groove body, an externally threaded arc-shaped connecting plate strip, an internally threaded connecting groove body, a support cylinder body, and a cooling auxiliary fan; there are two cap bodies, and the two cap bodies are butted to form a top cover. The two ends of the cap body are symmetrically provided with wire wrapping groove bodies, and the bottom end of the cap body is provided with an externally threaded arc-shaped connecting plate strip, which is threadedly connected with the internally threaded connecting groove body in a matching manner. The internally threaded connecting groove body is arranged at the top opening position of the support cylinder body, and a cooling auxiliary fan is arranged at the inner side position of the bottom end of the support cylinder body.

[0015] A control method for a control feedback type brushless DC motor, the control method is as follows: by arranging a heat dissipation hole body on one side of the tail end cover and cooperating with the heat dissipation auxiliary component to dissipate the heat inside the brushless DC motor main body. When the temperature rises, start the cooling auxiliary fan. Drive the air flow through the arranged cooling auxiliary fan, so that the air flow enters the auxiliary tube body from the communicating air pipe, and then enters the inner cavity of the brushless DC motor main body from the wire outlet hole. This process forms a heat dissipation circulation effect with the heat dissipation hole body to improve its heat dissipation efficiency. When the temperature inside the brushless DC motor main body decreases, turn off the cooling auxiliary fan, and perform independent heat dissipation work through the cooperation of the arranged heat dissipation hole body and the heat dissipation auxiliary component.

[0016] An application of a control feedback type brushless DC motor, the application is as follows: through the cooperation of the arranged heat dissipation hole body and the heat dissipation auxiliary component, provide a heat dissipation work for the inside of the brushless DC motor main body. When the temperature inside the brushless DC motor main body continues to rise and the heat dissipation requirements cannot be met only by the heat dissipation hole body and the heat dissipation auxiliary component, then perform heat dissipation work through the arranged cooperation component, the heat dissipation hole body, and the heat dissipation auxiliary component. And during the heat dissipation work, the soft hair bodies arranged on the inner sides of the first auxiliary half tube body and the second auxiliary half tube body prevent external impurities and moisture from entering the inside of the brushless DC motor main body from the wire outlet hole, and the auxiliary fittings arranged on the inner sides of the first ventilation half tube body and the second ventilation half tube body prevent external impurities and moisture from entering the inside of the brushless DC motor main body from the heat dissipation hole body.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The DC brushless motor designed by the present invention dissipates the heat inside the DC brushless motor main body by using a heat dissipation hole body and a heat dissipation auxiliary component in cooperation on one side of the end cover. When the temperature rises, the cooling auxiliary fan is started. The air flow is driven by the set cooling auxiliary fan, so that the air flow enters the auxiliary pipe body from the connecting air pipe, and then enters the inner cavity of the DC brushless motor main body from the wire outlet hole. This process forms a heat dissipation circulation effect with the heat dissipation hole body, improving its heat dissipation efficiency. When the temperature inside the DC brushless motor main body decreases, the cooling auxiliary fan is turned off, and the heat dissipation work is carried out separately through the cooperation of the set heat dissipation hole body and the heat dissipation auxiliary component, which has better flexibility in heat dissipation work; the soft hair bodies arranged inside the first auxiliary half pipe body and the second auxiliary half pipe body prevent external impurities and moisture from entering the DC brushless motor main body from the wire outlet hole, and the auxiliary fittings arranged inside the first ventilation half pipe body and the second ventilation half pipe body prevent external impurities and moisture from entering the DC brushless motor main body from the heat dissipation hole body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic front exploded view of the structural connection of the DC brushless motor main body, the heat dissipation auxiliary component and the matching component of the present invention;

[0020] Figure 2 is Figure 1 an exploded schematic view of the structural connection at position A in FIG.;

[0021] Figure 3 FIG. is a schematic rear exploded view of the structural connection of the DC brushless motor main body, the heat dissipation auxiliary component and the matching component of the present invention;

[0022] Figure 4 is of the present invention Figure 3 an exploded schematic view of the structural connection at position B in FIG.;

[0023] Figure 5 FIG. is a bottom exploded view of the structural connection of the DC brushless motor main body, the heat dissipation auxiliary component and the matching component of the present invention;

[0024] Figure 6 FIG. is a top view of the structural connection of the heat dissipation auxiliary component of the present invention;

[0025] Figure 7 is Figure 6 an exploded schematic view of the structural connection at position C in FIG.;

[0026] Figure 8 FIG. is a bottom view of the structural connection of the heat dissipation auxiliary component of the present invention;

[0027] Figure 9 is Figure 8 an exploded schematic view of the structural connection at position D in FIG.;

[0028] Figure 10Schematic diagram of the connection of the local structure of the auxiliary accessory of the present invention;

[0029] Figure 11 Top view of the connection of the mating components structure of the present invention;

[0030] Figure 12 is Figure 11 Explosion schematic diagram of the structure connection at position E in

[0031] Figure 13 Bottom view of the connection of the mating components structure of the present invention;

[0032] Figure 14 is Figure 13 Explosion schematic diagram of the structure connection at position F in

[0033] In the figure: the DC brushless motor main body 1, the front end cover 11, the tail end cover 12, the output shaft 13, the wire outlet hole 14, the connecting wire 15, the heat dissipation hole body 2, the first ventilation half tube body 301, the second ventilation half tube body 302, the first mounting plate head 303, the first baffle plate 304, the second baffle plate 305, the connecting rod 306, the first housing cover 307, the adhesive wool mat 401, the spherical surface groove 402, the auxiliary through hole 403, the auxiliary convex ring body 404, the first auxiliary half tube body 501, the second auxiliary half tube body 502, the second mounting plate head 503, the communicating air pipe 504, the second housing cover 505, the soft wool body 601, the flow guiding inclined plate 602, the wire trough 603, the cap body 701, the wire trough wrapping body 702, the external thread arc connecting plate strip 703, the internal thread connecting groove body 704, the support cylinder 705, the cooling auxiliary fan 706. Detailed implementation mode

[0034] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. For the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1: Please refer to Figures 1 - 14 , the control feedback type DC brushless motor, including the DC brushless motor main body 1, the front end of the DC brushless motor main body 1 is provided with a front end cover 11, and an output shaft 13 is arranged at the center position of the front end cover 11. The tail end of the DC brushless motor main body 1 is provided with a tail end cover 12. One side of the tail end cover 12 is provided with a wire outlet hole 14, and the tail end cover 12 is connected to the connecting wire 15, and the connecting wire 15 passes through the wire outlet hole 14; wherein the tail end cover 12 is provided with a heat dissipation hole body 2 on the side symmetrical to the wire outlet hole 14, and the heat dissipation hole body 2 is connected to the heat dissipation auxiliary component. The wire outlet hole 14 is connected to the mating component, and installation thread grooves are symmetrically arranged on the orifice side edges of both the wire outlet hole 14 and the heat dissipation hole body 2.

[0036] For the wire outlet hole 14, first insert the first auxiliary semi-tube body 501 into the wire outlet hole 14, and then insert the second auxiliary semi-tube body 502 into the wire outlet hole 14. At the same time, the first auxiliary semi-tube body 501 and the second auxiliary semi-tube body 502 are butted to form an auxiliary tube body, and the second mounting plate heads 503 on the outer side walls of the first auxiliary semi-tube body 501 and the second auxiliary semi-tube body 502 are aligned with the mounting thread grooves on the side of the hole opening of the wire outlet hole 14, and then fixed with screws. At this time, the auxiliary tube body wraps the connecting wire 15. Then, for the heat dissipation hole body 2 symmetrical to the wire outlet hole 14, insert the first ventilation semi-tube body 301 and the second ventilation semi-tube body 302 into the heat dissipation hole body 2 one by one, and the first ventilation semi-tube body 301 and the second ventilation semi-tube body 302 are butted to form a ventilation tube body, and the first mounting plate heads 303 on the outer side walls of the first ventilation semi-tube body 301 and the second ventilation semi-tube body 302 are aligned with the mounting thread grooves on the side of the hole opening of the heat dissipation hole body 2, and then fixed with screws. At the same time, the provided first shell cover 307 and the second shell cover 505 are butted to form a hemispherical shell cover. Then, butt the two cap bodies 701, and make the wire wrapping groove bodies 702 at both ends of the cap body 701 respectively clamped on the ventilation tube body and the auxiliary tube body. Then, install the support cylinder body 705, so that the internal thread connection groove body 704 inside the top end of the support cylinder body 705 is threadedly connected with the external thread arc connecting plate strip 703 at the bottom end of the cap body 701.

[0037] Among them, a heat dissipation hole body 2 is arranged on one side of the tail end cover 12 and used in cooperation with a heat dissipation auxiliary component to dissipate the heat inside the DC brushless motor body 1. When the temperature rises, the cooling auxiliary fan 706 is started. The air flow is driven by the provided cooling auxiliary fan 706, so that the air flow enters the auxiliary pipe body from the communication air pipe 504, and then enters the inner cavity of the DC brushless motor body 1 from the wire outlet hole 14. This process forms a heat dissipation circulation effect with the heat dissipation hole body 2 to improve its heat dissipation efficiency. When the internal temperature of the DC brushless motor body 1 drops, the cooling auxiliary fan 706 is turned off, and the heat dissipation hole body 2 and the heat dissipation auxiliary component are used in cooperation for independent heat dissipation work; that is, the heat dissipation auxiliary component includes a first ventilation half pipe body 301, a second ventilation half pipe body 302, a first mounting plate head 303, a first baffle plate 304, a second baffle plate 305, a connecting rod 306, a first housing 307 and auxiliary accessories; first mounting plate heads 303 are fixedly arranged on the outer sides of both the first ventilation half pipe body 301 and the second ventilation half pipe body 302, and both the first ventilation half pipe body 301 and the second ventilation half pipe body 302 are fixedly arranged by screws. First baffle plates 304 are fixedly arranged at equal intervals on the inner side wall of the second ventilation half pipe body 302, and second baffle plates 305 are fixedly arranged at equal intervals on the inner side wall of the first ventilation half pipe body 301; the lengths of both the first ventilation half pipe body 301 and the second ventilation half pipe body 302 are set to be the same, and the two are butted to form a ventilation pipe body, and one end of the ventilation pipe body is adaptively inserted into the heat dissipation hole body 2; the second ventilation half pipe body 302 is fixedly arranged at one end of the connecting rod 306, and the other end of the connecting rod 306 is fixedly arranged with a first housing 307; the second baffle plates 305 and the first baffle plates 304 are arranged in an interleaved manner, and auxiliary accessories are arranged on one side of both the second baffle plates 305 and the first baffle plates 304. The auxiliary accessories include an adhesion wool mat 401, a spherical surface groove 402, an auxiliary through hole 403 and an auxiliary convex ring body 404; the adhesion wool mat 401 is fixedly arranged on one side of the second baffle plate 305 and the first baffle plate 304, and spherical surface grooves 402 are uniformly arranged on the side wall of the adhesion wool mat 401. An auxiliary through hole 403 is arranged at the central position of the spherical surface groove 402, and the auxiliary through hole 403 extends through the second baffle plate 305, and the first baffle plate 304 is also penetrated by the auxiliary through hole 403. An auxiliary convex ring body 404 is fixedly arranged at the edge of the notch of the spherical surface groove 402.

[0038] Among them, through the combined use of the set heat dissipation hole body 2 and the heat dissipation auxiliary component, a heat dissipation work is provided inside the DC brushless motor body 1. Moreover, through the auxiliary accessories arranged inside the first ventilation half tube body 301 and the second ventilation half tube body 302, it is possible to prevent external impurities and moisture from entering the DC brushless motor body 1 through the heat dissipation hole body 2. That is, after the first ventilation half tube body 301 and the second ventilation half tube body 302 are docked, the first baffle plate 304 arranged inside the second ventilation half tube body 302 and the second baffle plate 305 arranged inside the first ventilation half tube body 301 are staggered with each other, and the two form a filtering effect. The purpose of their staggered arrangement is that, on the one hand, it can provide a filtering and blocking effect on external impurities, and on the other hand, it can also avoid affecting the function of the heat inside the DC brushless motor body 1 from dissipating outward. Moreover, adhesion pads 401 are arranged on the side walls of both the first baffle plate 304 and the second baffle plate 305, and spherical surface grooves 402 are arranged on the adhesion pads 401. The purpose is to have a better adhesion and filtering effect on impurities, and the arranged spherical surface grooves 402 can play a certain role in temporary storage and collection.

[0039] When the internal temperature of the DC brushless motor body 1 continues to rise and the heat dissipation requirements cannot be met only by the heat dissipation hole body 2 and the heat dissipation auxiliary component, the heat dissipation work is carried out through the set matching component, the heat dissipation hole body 2 and the heat dissipation auxiliary component. Among them, the cooling auxiliary fan 706 blows air, and blows air towards the hemispherical shell cover. The cooling air flow enters the auxiliary pipe body from the connecting air pipe 504, and then enters the inside of the DC brushless motor body 1 from the wire outlet hole 14, cools the heat inside it, and cooperates with the heat dissipation hole body 2 to quickly take out the heat, further improving its cooling effect. Among them, soft hair bodies 601 are arranged on the inner sides of both the first auxiliary half pipe body 501 and the second auxiliary half pipe body 502. Its function is that when the first auxiliary half pipe body 501 and the second auxiliary half pipe body 502 are butted to wrap the connecting wire 15, the soft hair body 601 contacts the connecting wire 15, and the soft hair bodies 601 on the inner sides of the first auxiliary half pipe body 501 and the second auxiliary half pipe body 502 also cross-contact, which is equivalent to a simple filtering and anti-impurity blocking function. On the one hand, it can block external impurities, and on the other hand, it can also prevent the gas entering from the connecting air pipe 504 from overflowing out too much; the matching component includes the first auxiliary half pipe body 501, the second auxiliary half pipe body 502, the second mounting plate head 503, the connecting air pipe 504, the second shell cover 505, the auxiliary structure and the support auxiliary component; second mounting plate heads 503 are fixedly arranged on the outer side walls of both the first auxiliary half pipe body 501 and the second auxiliary half pipe body 502, and the second mounting plate heads 503 are fixed by screws. The number of sets of the first auxiliary half pipe body 501 and the second auxiliary half pipe body 502 is the same, and their lengths are set equal. The two are butted to form an auxiliary pipe body. One end of the auxiliary pipe body is adaptively inserted into the wire outlet hole 14. The second auxiliary half pipe body 502 is arranged at one end of the connecting air pipe 504, and the two are communicated. The other end of the connecting air pipe 504 is fixedly provided with a second shell cover 505, and the connecting air pipe 504 is communicated with the second shell cover 505. The number of sets of the second shell cover 505 and the first shell cover 307 is the same, and the two are butted to form a hemispherical shell cover; the auxiliary structure includes the soft hair body 601, the flow guiding inclined plate 602 and the wire trough 603; the soft hair body 601 is evenly arranged on the inner sides of both the first auxiliary half pipe body 501 and the second auxiliary half pipe body 502, and the positions of the soft hair bodies 601 on the inner sides of the first auxiliary half pipe body 501 and the second auxiliary half pipe body 502 correspond to each other. A flow guiding inclined plate 602 is fixedly arranged on the inner side of one end of the second auxiliary half pipe body 502, and a wire trough 603 is arranged on the flow guiding inclined plate 602; the support auxiliary component includes a cap body 701, a wrapped wire trough body 702, an externally threaded arc-shaped connecting plate strip 703, an internally threaded connecting groove body 704, a support cylinder body 705 and a cooling auxiliary fan 706;There are two cap bodies 701. The two cap bodies 701 are butted to form a top cover. Wrapping wire trough bodies 702 are symmetrically arranged at both ends of the cap body 701. And an externally threaded arc-shaped connecting plate strip 703 is arranged at the bottom end of the cap body 701. The externally threaded arc-shaped connecting plate strip 703 is threadedly connected to an internally threaded connecting groove body 704 in a matching manner. The internally threaded connecting groove body 704 is arranged at the top opening position of the supporting cylinder body 705. A cooling auxiliary fan 706 is arranged at the inner side position of the bottom end of the supporting cylinder body 705.;

[0040] In this solution, a flow guiding inclined plate 602 is further arranged inside the second auxiliary half pipe body 502. Among them, a wire trough 603 is arranged at the top end of the flow guiding inclined plate 602. The purpose is to avoid the flow guiding inclined plate 602 causing extrusion damage to the connecting wire 15 when the first auxiliary half pipe body 501 and the second auxiliary half pipe body 502 are butted. The flow guiding inclined plate 602 can guide the airflow, so that the airflow can better flow into the interior of the DC brushless motor main body 1. On the other hand, it can also avoid too much airflow entering from the auxiliary pipe body directly flowing out from the heat dissipation hole body 2, thereby ensuring its heat dissipation effect.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A control feedback type brushless DC motor, comprising a brushless DC motor main body (1) and a connecting wire (15). A front end cover (11) is provided at the front end of the brushless DC motor main body (1), and an output shaft (13) is provided at the center of the front end cover (11). A tail end cover (12) is provided at the tail end of the brushless DC motor main body (1). An outlet hole (14) is provided on one side of the tail end cover (12), and the tail end cover (12) is connected to the connecting wire (15), and the connecting wire (15) passes through the outlet hole (14). It is characterized in that: A heat dissipation hole body (2) is provided on the side of the tail end cover (12) symmetric to the outlet hole (14), and the heat dissipation hole body (2) is connected to a heat dissipation auxiliary component. The outlet hole (14) is connected to a matching component, and installation threaded grooves are symmetrically provided on the orifice side edges of both the outlet hole (14) and the heat dissipation hole body (2). The heat dissipation auxiliary component includes a first ventilation half pipe body (301), a second ventilation half pipe body (302), a first mounting plate head (303), a first baffle plate (304), a second baffle plate (305), a connecting rod (306), a first shell cover (307) and auxiliary accessories. First baffle plates (304) are equidistantly and fixedly provided on the inner side wall of the second ventilation half pipe body (302), and second baffle plates (305) are equidistantly and fixedly provided on the inner side wall of the first ventilation half pipe body (301). The matching component includes a first auxiliary half pipe body (501), a second auxiliary half pipe body (502), a second mounting plate head (503), a connecting ventilation pipe (504), a second shell cover (505), an auxiliary structure and a support auxiliary component. Second mounting plate heads (503) are fixedly provided on the outer side walls of both the first auxiliary half pipe body (501) and the second auxiliary half pipe body (502), and the second mounting plate heads (503) are fixed by screws. The number of sets of both the first auxiliary half pipe body (501) and the second auxiliary half pipe body (502) is the same, and their lengths are equal. The two are butted to form an auxiliary pipe body, and one end of the auxiliary pipe body is adaptively inserted into the outlet hole (14). The second auxiliary half pipe body (502) is provided at one end of the connecting ventilation pipe (504), and the two are connected and communicated. The other end of the connecting ventilation pipe (504) is fixedly provided with a second shell cover (505), and the connecting ventilation pipe (504) is connected and communicated with the second shell cover (505). The provided first shell cover (307) is butted with the second shell cover (505), and the two are butted to form a hemispherical shell cover.

2. The brushless DC motor with control feedback according to claim 1, wherein: First mounting plate heads (303) are fixedly provided on the outer sides of both the first ventilation half pipe body (301) and the second ventilation half pipe body (302), and both the first ventilation half pipe body (301) and the second ventilation half pipe body (302) are fixed by screws.

3. The control feedback type brushless DC motor according to claim 2, characterized in that: Both the first ventilation half pipe body (301) and the second ventilation half pipe body (302) have the same length, and the two are butted to form a ventilation pipe body, and one end of the ventilation pipe body is adaptively inserted into the heat dissipation hole body (2).

4. The control feedback type brushless DC motor according to claim 2, wherein: The second ventilation half pipe body (302) is fixedly arranged at one end of the connecting rod strip (306), and the first shell cover (307) is fixedly arranged at the other end of the connecting rod strip (306).

5. The control feedback type brushless DC motor according to claim 2, wherein: The second baffle plate (305) and the first baffle plate (304) are arranged in a staggered manner, and auxiliary accessories are arranged on one side of both the second baffle plate (305) and the first baffle plate (304). The auxiliary accessories include an adhesion wool pad (401), a spherical surface groove (402), an auxiliary through hole (403), and an auxiliary convex ring body (404); the adhesion wool pad (401) is fixedly arranged on one side of the second baffle plate (305) and the first baffle plate (304), and spherical surface grooves (402) are uniformly arranged on the side wall of the adhesion wool pad (401). An auxiliary through hole (403) is arranged at the central position of the spherical surface groove (402), and the auxiliary through hole (403) extends through to the second baffle plate (305). The first baffle plate (304) is also penetrated by the auxiliary through hole (403), and an auxiliary convex ring body (404) is fixedly arranged at the edge side of the notch of the spherical surface groove (402).

6. The brushless DC motor with control feedback according to claim 1, wherein: The auxiliary structure includes a soft hair body (601), a diversion inclined plate (602), and a wire slot (603); the soft hair body (601) is uniformly arranged on the inner sides of the first auxiliary half pipe body (501) and the second auxiliary half pipe body (502), and the positions of the soft hair bodies (601) on the inner sides of the first auxiliary half pipe body (501) and the second auxiliary half pipe body (502) correspond to each other. A diversion inclined plate (602) is fixedly arranged at one end of the inner side of the second auxiliary half pipe body (502), and a wire slot (603) is arranged on the diversion inclined plate (602).

7. The control feedback type brushless DC motor according to claim 1, wherein: The support auxiliary assembly includes a cap body (701), a wire wrapping groove body (702), an externally threaded arc-shaped connecting plate strip (703), an internally threaded connecting groove body (704), a support cylinder body (705), and a cooling auxiliary fan (706); there are two cap bodies (701), and the two cap bodies (701) are butted to form a top cover. Wrapping groove bodies (702) are symmetrically arranged at both ends of the cap body (701), and an externally threaded arc-shaped connecting plate strip (703) is arranged at the bottom end of the cap body (701). The externally threaded arc-shaped connecting plate strip (703) is threadedly connected with the internally threaded connecting groove body (704) in a matching manner. The internally threaded connecting groove body (704) is arranged at the top end opening position of the support cylinder body (705), and a cooling auxiliary fan (706) is arranged at the inner side position of the bottom end of the support cylinder body (705).

8. A control method for a control-feedback type brushless DC motor as described in any one of claims 1-7, characterized in that, The control method is as follows: By arranging a heat dissipation hole body (2) on one side of the end cover (12) to cooperate with a heat dissipation auxiliary component, the heat inside the DC brushless motor main body (1) is dissipated. When the temperature rises, the cooling auxiliary fan (706) is started. The arranged cooling auxiliary fan (706) drives the air flow, so that the air flow enters the auxiliary pipe body from the connecting air pipe (504), and then enters the inner cavity of the DC brushless motor main body (1) from the wire outlet hole (14). This process forms a heat dissipation circulation effect with the heat dissipation hole body (2), improving its heat dissipation efficiency. When the internal temperature of the DC brushless motor main body (1) drops, the cooling auxiliary fan (706) is turned off, and separate heat dissipation work is carried out through the cooperation of the arranged heat dissipation hole body (2) and the heat dissipation auxiliary component.

9. An application of the control-feedback type brushless DC motor according to any one of claims 1-7, characterized in that, The application is as follows: Through the cooperation of the arranged heat dissipation hole body (2) and the heat dissipation auxiliary component, a heat dissipation work is provided for the inside of the DC brushless motor main body (1). When the internal temperature of the DC brushless motor main body (1) continues to rise and the heat dissipation demand cannot be met only by the heat dissipation hole body (2) and the heat dissipation auxiliary component, the arranged cooperation component, the heat dissipation hole body (2), and the heat dissipation auxiliary component are used for heat dissipation work. At the same time of the heat dissipation work, the soft hair bodies (601) arranged on the inner sides of the first auxiliary half pipe body (501) and the second auxiliary half pipe body (502) prevent external impurities and moisture from entering the inside of the DC brushless motor main body (1) from the wire outlet hole (14), and the auxiliary fittings arranged on the inner sides of the first ventilation half pipe body (301) and the second ventilation half pipe body (302) prevent external impurities and moisture from entering the inside of the DC brushless motor main body (1) from the heat dissipation hole body (2).

Images