Brushless direct current motor driver

Abstract

The utility model relates to the technical field of motor driving, and discloses a brushless direct current motor driver which comprises a driver case, the inner wall of the top of the driver case is provided with a placement groove, the inner walls of the two sides of the driver case are slidably connected with a driver plate body, the driver case is provided with a heat dissipation mechanism, and the heat dissipation mechanism is provided with a heat dissipation groove. A heat dissipation mechanism is arranged in the driver case, a cushioning mechanism is arranged on the heat dissipation mechanism, the heat dissipation mechanism comprises a sliding groove, the sliding groove is formed in the inner wall of the top of the driver case, a butt joint rod penetrates through the inner wall of the top of the driver plate body, and a graphene plate frame is fixedly connected to the end, away from the driver plate body, of the butt joint rod. According to the utility model, by arranging the graphene plate frame, the connecting rod and other structures, heat absorption and heat dissipation are carried out on the electronic elements on the driver plate body during operation, and the problem that the heat dissipation mode is not beneficial to long-term stable operation of a motor in various environments because the motor driver adopts a mode of singly arranging a heat dissipation groove for heat dissipation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor driving, in particular to a brushless DC motor driver. Background Art

[0002] A motor driver controls the rotation angle and speed of a motor to achieve duty cycle control and thus achieve motor idle speed control. Because the motor drive current is large or the voltage is high, ordinary switches or electronic components cannot control the motor. Therefore, a motor driver can stably control the motor's switching operation.

[0003] Because the motor driver needs to carry a large voltage, and the motor will generate a certain amount of heat under long-term operation load, which will cause certain damage to the electronic components inside the motor driver. In order to maintain good stability and dustproof capabilities, the currently used motor drivers use a single heat dissipation slot to dissipate heat. This heat dissipation method is not only inefficient, but also not conducive to adapting to the long-term stable operation of the motor in various environments. Therefore, a brushless DC motor driver is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a brushless DC motor driver, which aims to improve the existing technology. The motor driver currently used adopts a single heat dissipation slot to dissipate heat in order to maintain good stability and dustproof capabilities. This heat dissipation method is not only inefficient, but also not conducive to adapting to the long-term stable operation of the motor in various environments.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a brushless DC motor driver, including a driver chassis, the top inner wall of the driver chassis is provided with a placement groove, the two side inner walls of the driver chassis are slidably connected to the driver plate body, the driver chassis is provided with a heat dissipation mechanism, and the heat dissipation mechanism is provided with a shock-absorbing mechanism, and the heat dissipation mechanism includes a slide groove, which is provided on the top inner wall of the driver chassis, and a docking rod passes through the top inner wall of the driver plate body, and the end of the docking rod away from the driver plate body is fixedly connected to the graphene plate frame, the bottom outer wall of the graphene plate frame is fixedly connected to the silicone grease thermal pad, and the top outer wall of the graphene plate frame is fixedly connected to the heat sink, the two side inner walls of the driver chassis are slidably connected with paddles, one side outer wall of the paddle is fixedly connected to a telescopic spring, and the side outer wall of the paddle away from the telescopic spring is fixedly connected to an arc block.

[0006] As a further description of the above technical solution: the shock absorbing mechanism includes a bearing plate, which is slidably connected to the inner walls on both sides of the slide groove, and the bottom outer wall of the bearing plate is fixedly connected to a spring damper.

[0007] As a further description of the above technical solution: the driver plate body is slidably connected to the inner walls on both sides of the slide groove, and the silicone grease thermal pad is attached to the top outer wall of the driver plate body.

[0008] As a further description of the above technical solution: a liquid inlet is provided on the top outer wall of the graphene plate frame, and a liquid outlet is provided on the top outer wall of the graphene plate frame.

[0009] As a further description of the above technical solution: one end of the telescopic spring away from the paddle is fixedly connected to an inner wall of one side of the driver chassis, and the arc block passes through an inner wall of one side of the slide groove.

[0010] As a further description of the above technical solution: the arc-shaped block is clamped on the top outer wall of the graphene plate frame, and an indicator mark is opened on one side outer wall of the paddle.

[0011] As a further description of the above technical solution: a wear-resistant pad is fixedly connected to the top outer wall of the bearing plate, and one end of the spring damper away from the bearing plate is fixedly connected to the bottom inner wall of the drive chassis.

[0012] As a further description of the above technical solution: heat dissipation grooves are provided on the outer walls of both sides of the drive chassis.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, by providing a graphene plate frame, connecting rods, heat sinks and other structures, the electronic components on the driver board are subjected to heat absorption and heat dissipation during operation, thereby improving the problem that the motor driver adopts a single heat dissipation slot to dissipate heat. This heat dissipation method is not conducive to adapting to the long-term stable operation of the motor in various environments. At the same time, the graphene plate frame is provided with water-cooled expansion connection holes, which facilitates the water-cooling auxiliary heat dissipation of the graphene plate frame through the existing water-cooling connection, thereby enhancing a certain heat dissipation effect.

[0015] 2. In the utility model, by providing structures such as a bearing plate, a spring damper, and a wear-resistant pad, the vibration generated by the driving machine plate during operation or when subjected to external collisions is buffered, the electronic components are improved to perform buffering and shock absorption when subjected to severe vibrations, and the performance impact and damage problems caused by severe vibrations on the electronic components are reduced, so that the electronic components inside the motor driver maintain normal operating performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall front view of a brushless DC motor driver proposed in the present invention;

[0017] Figure 2 This is a schematic side view of the overall brushless DC motor driver proposed by the present invention;

[0018] Figure 3 This is a schematic diagram of a heat dissipation mechanism of a brushless DC motor driver proposed in the present invention;

[0019] Figure 4 This is a schematic diagram of a damping mechanism of a brushless DC motor driver proposed in the present invention.

[0020] Legend:

[0021] 1. Driver chassis; 2. Placement slot; 3. Heat dissipation slot; 4. Driver board; 5. Heat dissipation mechanism; 50. Slide slot; 51. Graphene plate rack; 52. Docking rod; 53. Silicone grease thermal pad; 54. Heat sink; 56. Liquid inlet; 57. Liquid outlet; 58. Telescopic spring; 59. Paddle; 510. Arc block; 6. Shock absorption mechanism; 61. Loading plate; 62. Spring damper; 63. Wear-resistant pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Reference Figure 1-Figure 3 The utility model provides an embodiment: a brushless DC motor driver, including a driver chassis 1, a placement groove 2 is opened on the top inner wall of the driver chassis 1, a driver plate 4 is slidably connected to the inner walls of both sides of the driver chassis 1, a heat dissipation mechanism 5 is provided on the driver chassis 1, and a shock-absorbing mechanism 6 is provided on the heat dissipation mechanism 5. The heat dissipation mechanism 5 includes a slide groove 50, which is opened on the top inner wall of the driver chassis 1, and a docking rod 52 is passed through the top inner wall of the driver plate 4. The docking rod 52 is provided to prevent the silicone grease thermal pad 53 from offsetting with the driver plate 4, and the docking rod 52 is fixedly connected to the end away from the driver plate 4. A graphene plate frame 51 is connected, and a silicone grease thermal pad 53 is fixedly connected to the bottom outer wall of the graphene plate frame 51. The silicone grease thermal pad 53 is provided to absorb the heat on the driver plate body 4 and conduct it to the graphene plate frame 51. A heat sink 54 is fixedly connected to the top outer wall of the graphene plate frame 51. By providing the heat sink 54, a paddle 59 is slidably connected to the inner walls on both sides of the drive chassis 1. A telescopic spring 58 is fixedly connected to the outer wall on one side of the paddle 59. A curved block 510 is fixedly connected to the outer wall on the side of the paddle 59 away from the telescopic spring 58. The curved block 510 is provided to facilitate the clamping, fixing and separation of the graphene plate frame 51.

[0024] Reference Figure 2-Figure 3 The driver plate body 4 is slidably connected to the inner walls on both sides of the slide groove 50, and the silicone grease thermal pad 53 is attached to the top outer wall of the driver plate body 4. The top outer wall of the graphene plate frame 51 is provided with a liquid inlet 56. By setting the expansion port of the liquid inlet 56 and the liquid outlet 57, it is convenient to connect the threaded fixing of the water-cooled radiator in the existing technology to perform water-cooled auxiliary cooling, increase a certain cooling effect and expand practicality, and the top outer wall of the graphene plate frame 51 is provided with a liquid outlet 57. By setting the graphene plate frame 51 to the driver plate body 4 is used to absorb and dissipate the heat emitted by the driver chassis 1. The end of the telescopic spring 58 away from the paddle 59 is fixedly connected to the inner wall of one side of the driver chassis 1. The arc block 510 passes through the inner wall of one side of the slide groove 50. The arc block 510 is clamped on the top outer wall of the graphene plate frame 51. An indicator mark is provided on the outer wall of one side of the paddle 59 to prompt the operation method. The heat dissipation grooves 3 are provided on the outer walls of both sides of the driver chassis 1. The heat dissipation grooves 3 are provided to allow the high-voltage electronic components to dissipate heat and be ventilated when the driver board body 4 is in operation.

[0025] Reference Figure 3-Figure 4 The shock absorbing mechanism 6 includes a supporting plate 61, which is slidably connected to the inner walls on both sides of the slide groove 50. The bottom outer wall of the supporting plate 61 is fixedly connected with a spring damper 62. The spring damper 62 is provided to prevent external collisions or vibrations generated during operation from being buffered and shock-absorbing, thereby preventing the internal components of the motor driver from being damaged and malfunctioning due to severe vibrations. The top outer wall of the supporting plate 61 is fixedly connected with a wear-resistant pad 63. The wear-resistant performance of the supporting plate 61 is enhanced by providing the wear-resistant pad 63. The end of the spring damper 62 away from the supporting plate 61 is fixedly connected to the bottom inner wall of the driver chassis 1.

[0026] Working principle: By inserting the docking rod 52 into the top inner wall of the driver board body 4, the silicone grease thermal pad 53 is attached to the driver board body 4, and then the driver board body 4 and the graphene plate frame 51 are placed on the slide groove 50, and then the graphene plate frame 51 is pressed to make the arc block 510 squeeze the telescopic spring 58. When pressed to a certain position, the arc block 510 is clamped and fixed on the top of the graphene plate frame 51. During operation, the heat emitted by the electronic components on the driver board body 4 is transferred to the silicone grease thermal pad 53 and the graphene plate frame 51, and then transferred to multiple heat sinks 54 for multi-faceted auxiliary heat dissipation. At the same time, the existing water-cooled radiator is extended and connected through the liquid inlet 56 and the liquid outlet 57 for threaded connection, and cold liquid circulates in the graphene plate frame 51 for water-cooled auxiliary cooling.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A brushless DC motor driver, comprising a driver chassis (1), characterized in that: The top inner wall of the driver chassis (1) is provided with a placement groove (2), the inner walls on both sides of the driver chassis (1) are slidably connected with a driver plate body (4), a heat dissipation mechanism (5) is provided on the driver chassis (1), a shock absorbing mechanism (6) is provided on the heat dissipation mechanism (5), the heat dissipation mechanism (5) includes a slide groove (50), the slide groove (50) is provided on the top inner wall of the driver chassis (1), a docking rod (52) is passed through the top inner wall of the driver plate body (4), and the docking rod (52) is away from One end of the driver plate body (4) is fixedly connected to a graphene plate frame (51), a bottom outer wall of the graphene plate frame (51) is fixedly connected to a silicone grease thermal pad (53), a top outer wall of the graphene plate frame (51) is fixedly connected to a heat sink (54), both sides of the inner wall of the driver chassis (1) are slidably connected to a paddle (59), one side outer wall of the paddle (59) is fixedly connected to a telescopic spring (58), and a side outer wall of the paddle (59) away from the telescopic spring (58) is fixedly connected to an arc block (510).

2. The brushless DC motor driver according to claim 1, wherein: The shock absorbing mechanism (6) comprises a bearing plate (61), the bearing plate (61) being slidably connected to the inner walls on both sides of the slide groove (50), and a spring damper (62) being fixedly connected to the outer wall of the bottom of the bearing plate (61).

3. The brushless DC motor driver according to claim 1, wherein: The driver plate body (4) is slidably connected to the inner walls on both sides of the slide groove (50), and the silicone grease thermal pad (53) is attached to the top outer wall of the driver plate body (4).

4. The brushless DC motor driver according to claim 1, wherein: A liquid inlet (56) is provided on the top outer wall of the graphene plate frame (51), and a liquid outlet (57) is provided on the top outer wall of the graphene plate frame (51).

5. The brushless DC motor driver according to claim 1, wherein: One end of the telescopic spring (58) away from the paddle (59) is fixedly connected to an inner wall of the driver chassis (1), and the arc block (510) passes through an inner wall of the slide groove (50).

6. The brushless DC motor driver according to claim 1, wherein: The arc-shaped block (510) is clamped on the top outer wall of the graphene plate frame (51), and an indicator mark is provided on one side outer wall of the paddle (59).

7. The brushless DC motor driver according to claim 2, wherein: A wear-resistant pad (63) is fixedly connected to the top outer wall of the bearing plate (61), and one end of the spring damper (62) away from the bearing plate (61) is fixedly connected to the bottom inner wall of the driver chassis (1).

8. The brushless DC motor driver according to claim 1, wherein: Heat dissipation slots (3) are provided on both side outer walls of the driver chassis (1).

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