Motor PCB board stator with heat dissipation function

Abstract

The application discloses a motor PCB stator with a heat dissipation function, which comprises a PCB stator body and a heat exchange mechanism, the heat exchange mechanism comprises an empty ring, the outer surface of the empty ring is movably connected with the outer surface of the PCB stator body, a flat pipe is in communication with the inside of the empty ring, a circular ring is fixedly connected with the outer surface of the flat pipe, an arc strip is fixedly connected with the outer surface of the circular ring, a connecting pipe is in communication with the inside of the flat pipe, one end of the connecting pipe penetrates the bodies of the circular ring and the arc strip in sequence and extends to the inside of the arc strip, and the body of the arc strip is provided with a penetrating air outlet, and relates to the technical field of motors, solves the problems of the heat dissipation measures of the existing PCB stator, influences winding arrangement, and thus easily influences the production and use of the PCB stator, meanwhile, the use of liquid cooling medium easily causes liquid leakage to influence the safety of motor circuits, and the heat dissipation area and range of the whole heat conduction through hole are small, thereby causing the actual heat dissipation efficiency to be low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to a motor PCB stator with heat dissipation function. BACKGROUND

[0002] The PCB stator is used as the stator of the motor, and the functions of the stator of the traditional motor are integrated in the PCB, so that the size and weight of the motor are reduced, but the heat dissipation performance of the PCB is poor, which easily affects the working performance of the PCB stator, and even causes the PCB to be deformed by heat. In a motor with a PCB stator according to application No. CN201910330633.1, a heat-conducting through hole is provided on the PCB stator, and the heat-conducting through hole is connected with a cooling channel. During operation of the motor, a cooling medium is introduced into the cooling channel, so that the heat generated by the PCB stator can be dissipated in time.

[0003] The above device solves the problem of poor heat dissipation performance of the existing PCB stator, but still has some defects in actual use. First, the device needs to set a heat-conducting through hole on the PCB, which will affect the normal winding arrangement and require a new arrangement method and production equipment. Second, the use of liquid cooling medium is easy to cause liquid leakage, which affects the safety of the circuit, and the overall heat dissipation area and range are small, resulting in poor actual heat dissipation efficiency. Therefore, the existing problems need to be solved. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a motor PCB stator with heat dissipation function, which solves the problem of heat dissipation measures of the existing PCB stator, affects the winding arrangement, and thus easily affects the production and use of the PCB stator. At the same time, the use of liquid cooling medium is easy to cause liquid leakage, which affects the safety of the motor circuit, and the overall heat dissipation area and range of the heat-conducting through hole are small, resulting in low actual heat dissipation efficiency.

[0005] To achieve the above purpose, the present application is realized by the following technical scheme: a motor PCB stator with heat dissipation function, comprising a PCB stator body and a heat exchange mechanism, the heat exchange mechanism comprising an empty ring, the outer surface of the empty ring being movably connected with the outer surface of the PCB stator body, a flat tube being communicated through the inside of the empty ring, a circular ring being fixedly connected to the outer surface of the flat tube, an arc strip being fixedly connected to the outer surface of the circular ring, a connecting pipe being communicated through the inside of the flat tube, one end of the connecting pipe extending to the inside of the arc strip through the bodies of the circular ring and the arc strip in sequence, a ventilation opening being formed through the body of the arc strip, an air inlet being formed through the ring hole of the empty ring, and a fixed plate being fixedly connected to the inside of the arc strip.

[0006] A cooling assembly is arranged in the inside of the empty ring to cool the air in the inside of the empty ring.

[0007] The heat dissipation assembly is arranged outside the hollow ring and dissipates heat by driving air circulation.

[0008] Preferably, the inner part of the air inlet and the air outlet is provided with a filter screen, the outer part of the hollow ring is provided with a patch, the outer surface of the patch is movably connected with the outer surface of the PCB stator body, and the patch comprises a thin ring, a fixed piece and a link ring which are fixed with each other, and the outer surface of the thin ring is in contact with the outer surface of the arc strip.

[0009] Preferably, the cooling assembly comprises a semiconductor cooling sheet, the outer surface of the semiconductor cooling sheet is fixedly connected with the body of the hollow ring, the cold end of the semiconductor cooling sheet is fixedly connected with a triangular column, and the triangular column is arranged in the inner part of the hollow ring.

[0010] Preferably, the input end of the semiconductor cooling sheet is electrically connected with a photosensitive switch, the outer surface of the photosensitive switch is fixedly connected with the outer surface of the hollow ring, and the outer part of the photosensitive switch is provided with a spotlight.

[0011] Preferably, the outer part of the triangular column is provided with a ladder shell, the outer surface of the ladder shell is fixedly connected with the inner part of the flat tube, the inner part of the ladder shell is fixedly connected with a positive column and a negative column respectively, and the output end of the positive column and the negative column is electrically connected with the output end of the photosensitive switch.

[0012] Preferably, the heat dissipation assembly comprises a support ring, the support ring is arranged outside the circular ring, a rotating piece is arranged between the outer surfaces of the support ring and the circular ring, the outer surfaces of the support ring and the circular ring are both provided with ring grooves, both ends of the rotating piece are fixedly connected with rotating rings, and the outer surfaces of the rotating rings on both sides are rotatably connected with the inner parts of the ring grooves on both sides.

[0013] Preferably, the ring hole of the support ring is fixedly connected with a fixed ear, the body of the fixed ear is provided with a through mounting hole, and the inner part of the mounting hole is provided with a bolt.

[0014] Preferably, the outer part of the rotating piece is provided with a linkage unit, the linkage unit comprises a tooth ring, the tooth ring is arranged outside the hollow ring, the outer surface of the tooth ring is abutted with a tooth block, the outer surface of the tooth block is fixedly connected with a sleeve, the inner part of the sleeve is slidably connected with a pin rod in a penetrating mode, and one end of the pin rod is fixedly connected with the outer surface of the rotating piece.

[0015] Preferably, the outer surface of the pin rod is sleeved with a spring, both ends of the spring are fixedly connected with the inner part of the sleeve and the outer surface of the pin rod respectively, the inner part of the sleeve is fixedly connected with a fixed pipe in a penetrating mode, and the spotlight is arranged in the inner part of the fixed pipe.

[0016] Preferably, the interior of the sleeve is provided with a limiting groove, the limiting groove is slidably connected with a limiting block, and the outer surface of the limiting block is fixedly connected with the outer surface of the pin rod.

[0017] Advantages

[0018] The application provides a motor PCB stator with a heat dissipation function.

[0019] (1) By setting the heat exchange mechanism, the combination of the air ring, the flat tube, the arc strip and the patch improves the heat exchange area to improve the heat dissipation effect and efficiency, and does not need to redesign the winding arrangement, and the heat exchange channel is formed by the fixed plate, so that the heat exchange effect of the patch is fully improved, thereby further improving the heat dissipation efficiency and effect of the PCB stator body.

[0020] (2) By setting the cooling assembly, the cold end of the semiconductor refrigeration sheet can cool the air in the air ring, thereby improving the heat exchange and heat dissipation efficiency, and the high-voltage electric field generated by the positive pole and the negative pole can drive the air to flow quickly, thereby further improving the heat dissipation efficiency and effect of the PCB stator body by cooling and improving the air flow rate.

[0021] (3) By setting the heat dissipation assembly, the air is cut and compressed by the rotating vane, so that an air pressure difference is generated near the exhaust port, thereby accelerating the air in the arc strip to be discharged outward, improving the air flow rate and thereby improving the heat dissipation efficiency, so that the PCB stator body can be quickly cooled, avoiding the problem that the PCB board is damaged or the motor cannot work normally due to temperature.

[0022] (4) By setting the linkage unit, the active gas in the sleeve expands due to heat, thereby driving the sleeve to move, so that the meshing of the tooth block and the tooth ring enables the rotating vane to rotate synchronously with the rotor, and the rays of the spotlight cannot irradiate on the photosensitive switch, so that the semiconductor refrigeration sheet, the positive pole and the negative pole circuit are connected, thereby cooling the air synchronously, and realizing the improvement of the bidirectional heat dissipation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is an external structure perspective view of the application;

[0024] Figure 2 It is an external structure perspective view of the thin ring of the application;

[0025] Figure 3 It is an internal structure perspective view of the air ring of the application;

[0026] Figure 4 It is an internal structure perspective view of the ladder shell of the application;

[0027] Figure 5It is the external structure perspective view of the rotary piece of the present application.

[0028] Figure 6 It is the internal structure perspective view of the sleeve of the present application.

[0029] In the figure: 1, PCB stator body; 2, empty ring; 3, cooling assembly; 31, semiconductor refrigeration piece; 32, triangular column; 33, light-sensitive switch; 34, spotlight; 35, ladder shell; 36, positive column; 37, negative column; 4, heat dissipation assembly; 41, support ring; 42, rotary piece; 43, linkage unit; 431, tooth ring; 432, tooth block; 433, sleeve; 434, pin rod; 435, spring; 436, pipe fixing; 437, limiting groove; 438, limiting block; 44, ring groove; 45, rotating ring; 46, fixed ear; 47, mounting hole; 48, bolt; 5, flat tube; 6, circular ring; 7, arc strip; 8, connecting pipe; 9, air outlet; 10, air inlet; 11, fixed plate; 12, filter screen; 13, thin ring; 14, fixed piece; 15, connecting ring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0031] Please refer to Figures 1-6 The present application provides a technical solution: a motor PCB stator with heat dissipation function:

[0032] Embodiment one: refer to the attached Figure 1 , attached Figure 2 , attached Figure 3 ;

[0033] The system includes a PCB stator body 1, with a heat exchange mechanism externally mounted on its exterior. All components of the heat exchange mechanism are made of alumina or aluminum nitride. The heat exchange mechanism includes a hollow ring 2, whose outer surface is movably connected to the outer surface of the PCB stator body 1. A flat tube 5 runs through the interior of the hollow ring 2. A circular ring 6 is fixedly connected to the outer surface of the flat tube 5, and an arc strip 7 is fixedly connected to the outer surface of the circular ring 6. A connecting pipe 8 runs through the interior of the flat tube 5, with one end of the connecting pipe 8 passing through the circular ring 6 and the arc strip 7 and extending into the interior of the arc strip 7. The arc strip 7 has a through-hole exhaust port 9, and the hollow ring 2 has a through-hole inlet port 10. A fixed plate 11 is fixedly connected inside the arc strip 7, with the length of the fixed plate 11 being less than the inner length of the arc strip 7, so that the arc strip 7... The heat dissipation channel is formed by two layers, which improves the heat exchange effect of the patch. The air inlet 10 and the air outlet 9 are both equipped with filters 12. The patch is provided on the outside of the air ring 2. As a preferred method, when multiple PCB stator bodies 1 are stacked together, the patch acts on the two adjacent PCB stator bodies 1 to achieve multi-level heat dissipation. The thickness of the patch is set between 0.3mm and 0.7mm to avoid affecting the stacking of multiple PCB stator bodies 1. Thermal grease can be applied at the connection between the patch and the arc strip 7 to improve the heat exchange efficiency. The outer surface of the patch is movably connected to the outer surface of the PCB stator body 1. The patch includes a thin ring 13, a fixed plate 14 and a connecting ring 15 that are fixed to each other. The outer surface of the thin ring 13 is in contact with the outer surface of the arc strip 7.

[0034] In this embodiment, the hollow ring 2, flat tube 5, and circular ring 6 are attached to one side of the surface of the PCB stator body 1 to increase the heat dissipation area and range, thereby improving the heat exchange efficiency. At the same time, the air inlet 10, connecting pipe 8, and exhaust outlet 9 allow air to flow inside, thereby improving the heat dissipation efficiency. When using multiple PCB stator bodies 1, the patch formed by the thin ring 13, the fixed plate 14, and the connecting ring 15 is placed between two adjacent PCB stator bodies 1 to form a multi-layer heat dissipation. The fixed plate 11 divides the interior of the arc strip 7 into inner and outer layers and forms a heat dissipation channel to improve the heat exchange effect of the patch.

[0035] Example 2: Based on Example 1, refer to the appendix of the instruction manual. Figure 3 Appendix Figure 4 ;

[0036] A cooling component 3 is installed inside the air ring 2. The cooling component 3 includes a thermoelectric cooler 31. The outer surface of the thermoelectric cooler 31 is fixedly connected to the body of the air ring 2. A triangular prism 32 is fixedly connected to the cold end of the thermoelectric cooler 31. The cross-section of the triangular prism 32 is an isosceles triangle, and its apex faces the axis of the air ring 2, so as to increase the contact area through the two sides of the triangular prism 32. The triangular prism 32 is located inside the air ring 2. A photosensitive switch 33 is electrically connected to the input end of the thermoelectric cooler 31. The circuit of the photosensitive switch 33 is electrically connected to the circuit of the thermoelectric cooler 31. The outer surface of the photosensitive switch 33 is fixedly connected to the outer surface of the air ring 2. A spotlight 34 is installed outside the photosensitive switch 33. The rays emitted by the spotlight 34 irradiate the light source. The photosensitive terminal of the photosensitive switch 33 is used to disconnect the circuit. As a preferred embodiment, the spotlight 34 is equipped with a battery and a wireless charging module. The motor circuit is also equipped with a wireless charging module to replenish the power of the spotlight 34 wirelessly. The triangular prism 32 is provided with a trapezoidal shell 35. The cross-section of the trapezoidal shell 35 is an isosceles trapezoid. The airflow speed can be increased by tightening the opening on one side. The outer surface of the trapezoidal shell 35 is fixedly connected to the inside of the flat tube 5. The positive terminal 36 and the negative terminal 37 are fixedly connected to the inside of the trapezoidal shell 35. The positive terminal 36 and the negative terminal 37 are electrically connected to the positive and negative terminals of the photosensitive switch 33, respectively. The output terminals of the positive terminal 36 and the negative terminal 37 are electrically connected to the output terminal of the photosensitive switch 33.

[0037] In this embodiment, when the rays from the spotlight 34 are separated from the photosensitive end of the photosensitive switch 33, the internal circuit of the photosensitive switch 33 is connected to supply power to the thermoelectric cooler 31, the positive terminal 36, and the negative terminal 37. First, the cold end of the thermoelectric cooler 31 cools the air inside the air ring 2 through the triangular prism 32. Second, the photosensitive switch 33 provides high voltage and low current to the positive terminal 36 to form a high voltage electric field. The positive terminal 36 electrolyzes oxygen molecules in the air, causing the positively charged oxygen molecules to move towards the negative terminal 37, thereby forming an airflow that accelerates the heat exchange and cooling of the PCB board stator body 1 through the flow of low-temperature air.

[0038] Example 3: Based on Example 2, refer to the appendix of the instruction manual. Figure 1 Appendix Figure 3 Appendix Figure 5 ;

[0039] A heat dissipation assembly 4 is provided on the outside of the hollow ring 2. The heat dissipation assembly 4 includes a support ring 41, which is located outside the circular ring 6. A rotating vane 42 is provided between the outer surfaces of the support ring 41 and the circular ring 6. The rotating vane 42 is inclined and located within the range of the exhaust port 9. By rotating around the motor axis, it can compress the air outside the exhaust port 9 to create a pressure difference, thereby accelerating the exhaust of air inside the arc strip 7 and improving the heat dissipation efficiency of the PCB board stator. Both the support ring 41 and the outer surface of the circular ring 6 are provided with annular grooves 44. The annular grooves 44 on the support ring 41... The cross-section is T-shaped to improve the stability of the connection between the rotating ring 45 and the support ring 41 on one side. Both ends of the rotating blade 42 are fixedly connected to the rotating ring 45. The rotating ring 45 supports and guides the movement of the rotating blade 42. The outer surfaces of the rotating rings 45 on both sides are rotatably connected to the inside of the annular grooves 44 on both sides. The annular hole of the support ring 41 is fixedly connected to the lug 46. The body of the lug 46 has a through mounting hole 47. The mounting hole 47 is provided with a bolt 48. The combination of the bolt 48 and the lug 46 can install the support ring 41 and the rotating blade 42 on the motor housing.

[0040] In this embodiment, when the temperature of the PCB stator body 1 is too high, the vane 42 rotates around the axis of the motor shaft to compress the air near the exhaust port 9, thereby using the air pressure difference to accelerate the exhaust of the air inside the arc strip 7, so as to improve the heat dissipation and cooling of the PCB stator body 1. At the same time, during the rotation of the vane 42, the stability of the vane 42 is improved by the synchronous rotation of the rotating ring 45 inside the ring groove 44.

[0041] Example 4: Based on Example 3, refer to the appendix of the instruction manual. Figure 1 Appendix Figure 6 ;

[0042] A linkage unit 43 is provided on the outside of the rotary vane 42. The linkage unit 43 includes a gear ring 431, which is disposed outside the hollow ring 2 and fixed to the rotating shaft of the motor. A toothed block 432 abuts against the outer surface of the gear ring 431. The toothed block 432 engages with the teeth of the gear ring 431, thereby driving the sleeve 433 to rotate synchronously. The sleeve 433 is fixedly connected to the outer surface of the toothed block 432. The sleeve 433 is filled with a non-toxic and harmless active gas. A pin 434 is slidably connected through the inside of the sleeve 433. The larger end of the pin 434 is disposed inside the sleeve 433 to provide axial limiting. One end of the pin 434 is fixedly connected to the outer surface of the rotary vane 42. A spring 435 is sleeved on the outer surface of the pin 434. The spring 435 can maintain the relative position through its elastic force. The stability of the sleeve 433 is ensured by its rebound, allowing the sleeve 433 to return to its original position after movement. The two ends of the spring 435 are fixedly connected to the inside of the sleeve 433 and the outer surface of the pin 434, respectively. A fixed tube 436 is fixedly connected through the inside of the sleeve 433. The fixed tube 436 can increase the heat exchange area and provide space for the spotlight 34. The spotlight 34 is set inside the fixed tube 436. A limiting groove 437 is opened inside the sleeve 433. A limiting block 438 is slidably connected inside the limiting groove 437. The combination of the limiting block 438 and the limiting groove 437 can radially limit the sleeve 433 to maintain the radial stability of the toothed block 432, thereby ensuring the stability of the meshing between the toothed block 432 and the toothed ring 431. The outer surface of the limiting block 438 is fixedly connected to the outer surface of the pin 434.

[0043] In this embodiment, when the cooling effect of the PCB stator body 1 after heat exchange and heat dissipation is poor, the active gas inside the sleeve 433 expands due to heat, and causes the sleeve 433 to drive the tooth block 432 to slide axially by squeezing one end of the pin 434. During this process, the sleeve 433 drives the spotlight 34 to move synchronously through the fixed tube 436. When the rays of the spotlight 34 can no longer irradiate the photosensitive end of the photosensitive switch 33, the semiconductor cooling chip 31 works to cool down, and the positive terminal 36 and the negative terminal 37 ionize the air to form an airflow to improve the heat dissipation efficiency. When the cooling and heat dissipation effect is still not good, the sleeve 433 drives the tooth block 432 to move so that the teeth of the tooth block 432 and the tooth ring 431 mesh. Thus, through the action of the sleeve 433 and the pin 434, the motor shaft drives the rotating plate 42 to rotate, so as to accelerate the discharge of air inside the arc strip 7, thereby further increasing the airflow speed and improving the heat dissipation efficiency. When the temperature drops, the spring 435 returns to the original position to reset the sleeve 433.

[0044] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor PCB board stator with heat dissipation function, comprising a PCB board stator body (1), characterized in that: The heat exchange mechanism includes an empty ring (2), the outer surface of which is movably connected to the outer surface of the PCB board stator body (1), a flat tube (5) is connected through the interior of the empty ring (2), a circular ring (6) is fixedly connected to the outer surface of the flat tube (5), an arc strip (7) is fixedly connected to the outer surface of the circular ring (6), a connecting pipe (8) is connected through the interior of the flat tube (5), one end of the connecting pipe (8) passes through the body of the circular ring (6) and the arc strip (7) and extends into the interior of the arc strip (7), the body of the arc strip (7) has a through exhaust port (9), the ring hole of the empty ring (2) has a through air inlet (10), and a fixed plate (11) is fixedly connected to the interior of the arc strip (7). Cooling component (3), the cooling component (3) is disposed inside the air ring (2) to cool the air inside the air ring (2); Heat dissipation component (4) is disposed outside the air ring (2) and dissipates heat by driving air circulation.

2. The motor PCB board stator with heat dissipation function according to claim 1, characterized in that: The air inlet (10) and the air outlet (9) are both equipped with filters (12). The outer surface of the hollow ring (2) is equipped with a patch. The outer surface of the patch is movably connected to the outer surface of the PCB board stator body (1). The patch includes a thin ring (13), a fixed plate (14) and a connecting ring (15) that are fixed to each other. The outer surface of the thin ring (13) is in contact with the outer surface of the arc strip (7).

3. A motor PCB board stator with heat dissipation function according to claim 1, characterized in that: The cooling component (3) includes a semiconductor cooling chip (31), the outer surface of which is fixedly connected to the body of the air ring (2), and a triangular prism (32) is fixedly connected to the cold end of the semiconductor cooling chip (31), which is located inside the air ring (2).

4. A motor PCB board stator with heat dissipation function according to claim 3, characterized in that: The input end of the semiconductor cooling chip (31) is electrically connected to a photosensitive switch (33), the outer surface of the photosensitive switch (33) is fixedly connected to the outer surface of the air ring (2), and a spotlight (34) is provided on the outside of the photosensitive switch (33).

5. A motor PCB board stator with heat dissipation function according to claim 4, characterized in that: The triangular prism (32) is provided with a ladder shell (35) on its outside. The outer surface of the ladder shell (35) is fixedly connected to the inside of the flat tube (5). The inside of the ladder shell (35) is fixedly connected to a positive terminal (36) and a negative terminal (37). The output terminals of the positive terminal (36) and the negative terminal (37) are electrically connected to the output terminal of the photosensitive switch (33).

6. A motor PCB board stator with heat dissipation function according to claim 4, characterized in that: The heat dissipation assembly (4) includes a support ring (41), which is disposed outside the ring (6). A rotating blade (42) is disposed between the outer surfaces of the support ring (41) and the ring (6). Both the outer surfaces of the support ring (41) and the ring (6) are provided with annular grooves (44). Both ends of the rotating blade (42) are fixedly connected to rotating rings (45). The outer surfaces of the rotating rings (45) on both sides are rotatably connected to the interior of the annular grooves (44) on both sides.

7. A motor PCB board stator with heat dissipation function according to claim 6, characterized in that: The ring hole of the support ring (41) is fixedly connected to a lug (46), and the body of the lug (46) has a through mounting hole (47), and a bolt (48) is provided inside the mounting hole (47).

8. A motor PCB board stator with heat dissipation function according to claim 6, characterized in that: A linkage unit (43) is provided on the outside of the rotary vane (42). The linkage unit (43) includes a gear ring (431), which is located outside the empty ring (2). A gear block (432) abuts against the outer surface of the gear ring (431). A sleeve (433) is fixedly connected to the outer surface of the gear block (432). When the cooling and heat dissipation effect is not good, the sleeve (433) drives the gear block (432) to move so that the teeth of the gear block (432) and the gear ring (431) mesh. A pin (434) is slidably connected through the inside of the sleeve (433). One end of the pin (434) is connected to... The outer surface of the rotating blade (42) is fixedly connected, and the outer surface of the pin (434) is fitted with a spring (435). The two ends of the spring (435) are fixedly connected to the inside of the sleeve (433) and the outer surface of the pin (434), respectively. A fixed tube (436) is fixedly connected through the inside of the sleeve (433). The spotlight (34) is set inside the fixed tube (436). A limiting groove (437) is opened inside the sleeve (433). A limiting block (438) is slidably connected inside the limiting groove (437). The outer surface of the limiting block (438) is fixedly connected to the outer surface of the pin (434).

Images