Rhinestone controller capable of realizing high-efficiency brushless motor driving

Abstract

The invention relates to the technical field of drilling machines, in particular to a water drill controller capable of realizing efficient brushless motor driving, which comprises a shell, the shell is divided into a machine body of an electric drill and a handle, and a gradienter for ensuring that the drilling machine is horizontal is embedded in the outer side wall of the machine body; a brushless controller, a stator and a rotor assembly are arranged in the brushless motor, a clutch assembly is arranged at the front end of the rotor assembly and connected with the power output end of the drilling machine, a capacitor is embedded in the handle and connected with the brushless controller, and sliding shifting teeth are arranged on the left side in the machine body. According to the drilling machine, when the drilling machine works, the situation that the drilling machine is stuck can be avoided, so that the service life of the drilling machine is prolonged, the drilling machine is quieter during drilling, and noise is reduced.

Description

Technical Field

[0001] This invention relates to the field of drilling technology, specifically to a water drill controller that enables high-efficiency brushless motor drive. Background Technology

[0002] AC water drills connect their output shaft to a water pipe. When drilling into a wall, water jets from the drill bit cool it and remove drilling debris, making them suitable for drilling into hard walls or metal. In recent years, the application of AC water drills has increased rapidly worldwide. Currently, the power motors and drivers for AC water drills are mainly divided into three types: One type is the AC brushed motor with carbon brushes. This type relies on carbon brushes for commutation, resulting in low efficiency, heavy weight, and large size. AC brushed motors also produce sparks during operation, causing high noise and environmental pollution. This type of motor and controller is currently the mainstream in the market. Another type is the brushless motor and driver with Hall effect sensors. This type has many components and leads, making design and manufacturing complex and leading to a high failure rate. The third type is the single Hall effect brushless motor and driver. Under high voltage and high power conditions, commutation is prone to errors, resulting in poor stability. Each of these three types has its advantages and disadvantages and is not perfectly compatible.

[0003] However, the power output of current drilling rigs is all from the output shaft, which limits the rotation speed of the output shaft. This makes it difficult to quickly drill through some hard walls or metals. The drill is very prone to jamming during drilling. Existing drilling rigs lack protective mechanisms, and the operation is mainly based on the operator's touch and visual inspection, which can easily cause overload damage to the internal brushless motor. Summary of the Invention

[0004] The purpose of this invention is to provide a water drill controller that enables high-efficiency brushless motor drive, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a water drill controller for high-efficiency brushless motor drive, comprising a housing, the housing being divided into the drill body and a handle, a level indicator to ensure the drill is level is embedded on the outer wall of the body, a brushless motor is installed inside the body, the brushless motor includes a brushless controller, a stator and a rotor assembly, a clutch assembly is provided at the front end of the rotor assembly, the clutch assembly is connected to the power output end of the drill, a capacitor is embedded inside the handle, the capacitor is connected to the brushless controller, a sliding tooth is provided on the left side inside the body, the sliding tooth is sleeved on the power output end of the drill and is connected to the clutch assembly, V phase line, U phase line and W phase line are arranged sequentially from right to left above the brushless controller, positive line of capacitor, negative line of capacitor, L line and N line are respectively provided on the left side of the brushless controller, red and yellow light lines and switch control lines are respectively provided on the right side of the brushless controller, a red light and a yellow light are provided in the middle of the brushless controller, and the red and yellow light lines are respectively connected to the red light and the yellow light.

[0006] Preferably, the clutch assembly and the sliding gear are connected by a gear. The sliding gear, the gear and the clutch assembly work together to achieve three-speed transmission. When the sliding gear is shifted to different gears, the power output end of the drilling rig achieves different speeds.

[0007] Preferably, the capacitor is connected to the mains power grid or to the battery. The capacitor filters, decouples, stores energy, and stabilizes the voltage of the power supply, thereby controlling the brushless motor to output power stably and ensuring stable speed.

[0008] Preferably, the brushless controller is equipped with a speed detector to detect the rotation of the power output end of the drilling rig, and controls the power output of the rotor assembly to ensure stable speed.

[0009] Preferably, the brushless motor uses a permanent magnet as the rotor to achieve efficient energy conversion and is quieter.

[0010] Preferably, the V-phase, U-phase, and W-phase lines of the brushless controller are connected to the brushless motor, the L-phase and N-phase lines are input AC220V, and the positive and negative terminals of the capacitors are connected to the DC bus voltage after high-voltage, high-capacity 1000UF*2 smoothed AC rectification.

[0011] Preferably, the brushless controller is equipped with six IGBT modules. The six high-voltage, high-current IGBTs form a three-way H-bridge to replace carbon brushes for commutation. The gate control terminals of the six IGBT modules adopt high-performance driver chips with dead-time protection to stably drive and protect the IGBT modules.

[0012] Preferably, when the current of the brushless controller reaches 17A, the red light illuminates, the drilling rig reaches its peak load, and begins to slow down. The speed decreases more significantly as the current increases, until the overload protection stops the machine after the speed decreases by 55%.

[0013] Preferably, when the temperature of the brushless controller exceeds 100 degrees Celsius, a yellow light illuminates and the high-temperature protection shuts down.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The level ensures the drill is level during drilling, preventing errors in the drilled holes; the sliding teeth, gears, and clutch assembly work together to control the drill's rotation speed, enabling drilling operations on walls of varying hardness without jamming or damaging gears and other parts, thus enhancing adaptability; the motor controller controls the motor's efficiency, increasing rotation speed and ensuring more convenient and user-friendly drilling.

[0015] This drive controller operates without carbon brush sparks, resulting in low noise, no environmental pollution, and a 40% reduction in size and weight. It boasts high efficiency and reduces the workload for operators. It eliminates the need for Hall effect sensors to read rotor position, simplifying the system and reducing wiring. It enables precise electronic commutation under high voltage, high power, and high current conditions, ensuring stable and error-free commutation. Furthermore, it eliminates the need for Hall effect sensors to read motor rotor position, reducing external components and wiring, thus simplifying the system. It tracks the rotor commutation point in real time and provides real-time constant speed and current precise control of the motor to operate at its optimal condition. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the drilling rig.

[0017] Figure 2 This is a schematic diagram of the internal structure of the drilling rig. Figure 3 This is a schematic diagram of the internal connections of a brushless controller.

[0018] Figure 4 This is a side view of the brushless control connection structure.

[0019] Figure 5 This is an H-bridge driver circuit.

[0020] Figure 6 This is the driver circuit for the IGBT module.

[0021] Figure 7 This is a circuit for acquiring signals from the motor rotor.

[0022] Figure 8 This is a peak current sampling circuit.

[0023] Figure 9 Set up a circuit for overcurrent.

[0024] Figure 10 This is an AC / DC voltage acquisition circuit.

[0025] In the diagram: 1 Level, 2 Sliding tooth, 3 Stator, 4 Brushless controller, 5 Clutch assembly, 6 Rotor assembly, 7 Capacitor, 8 Housing, 9 V phase line, 10 U phase line, 11 W phase line, 12 Switch control line, 13 Capacitor positive line, 14 Capacitor negative line, 15 L line, 16 N line, 17 Red and yellow light line. Detailed Implementation

[0026] To enhance understanding of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described and introduced below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, not all embodiments, and are not intended to limit the embodiments in any way. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-10 This invention provides a technical solution: a water drill controller for high-efficiency brushless motor drive, comprising a housing 8, which is divided into the drill body and a handle. A level 1 to ensure the drill is level is embedded on the outer wall of the body. A brushless motor is housed inside the body, containing a brushless controller 4, a stator 3, and a rotor assembly 6. A clutch assembly 5 is located at the front end of the rotor assembly 6, connected to the power output of the drill. A capacitor 7 is embedded inside the handle and connected to the brushless controller 4. The handle is located on the left side of the handle. A sliding tooth 2 is provided on the side, which is sleeved on the power output end of the drilling rig and connected to the clutch assembly 5. The V phase line 9, U phase line 10, and W phase line 11 are arranged from right to left on the top of the brushless controller 4. The positive terminal line 13, negative terminal line 14, L line 15, and N line 16 of the capacitor are arranged on the left side of the brushless controller 4. The red and yellow light line 17 and the switch control line 12 are arranged on the right side of the brushless controller 4. A red light and a yellow light are arranged in the middle of the brushless controller 4, and the red and yellow light line 17 is connected to the red light and the yellow light, respectively.

[0028] The clutch assembly 5 and the sliding gear 2 are connected by gears. The sliding gear 2, the gears and the clutch assembly 5 work together to achieve three-speed transmission. The sliding gear 2 is shifted to different gears to achieve different speeds at the power output end of the drill. By shifting the sliding gear 2 to different positions, the power output of the clutch assembly is controlled to ensure that the drill outputs different power when working, so as to drill holes in walls of different hardness and increase the adaptability of the drill.

[0029] Capacitor 7 is connected to the mains power grid or to the battery. Capacitor 7 filters, decouples, stores energy, and stabilizes the voltage of the power supply, controls the brushless motor to output power stably, and ensures stable speed. This greatly increases the stability of the brushless motor during operation and effectively improves the service life of the drilling rig.

[0030] The brushless controller 4 is equipped with a speed detector to detect the rotation of the power output end of the drilling rig, and controls the output power of the rotor assembly 6 to ensure stable speed. The speed detector can detect the speed to avoid the drill getting stuck, and can also accurately detect the working status of the drilling rig during actual operation to prevent damage to the drilling rig.

[0031] Brushless motors use permanent magnets as rotors to achieve efficient energy conversion and are quieter, making the drilling process more comfortable for operators.

[0032] Depend on Figure 3 and 4 As shown, the V phase line 9, U phase line 10, and W phase line 11 of the brushless controller 4 are connected to the brushless motor. The L line 15 and N line 16 are input AC220V. The positive line 13 and negative line 14 of the capacitor are connected to the DC bus voltage after the high voltage, large capacity 1000UF*2 smoothing AC rectification.

[0033] The brushless controller 4 is equipped with six IGBT modules. The six high-voltage, high-current IGBTs form a three-way H-bridge to replace carbon brushes for commutation. The gate control terminals of the six IGBT modules use high-performance drive chips with dead-time protection to stably drive and protect the IGBT modules. It also has a three-way motor rotor signal acquisition circuit to sample the real-time position of the motor at high speed for accurate commutation.

[0034] When the current of the brushless controller 4 reaches 17A, the red light illuminates, the drilling rig reaches its peak load and begins to slow down. The speed decreases more significantly as the current increases until the speed drops by 55%, at which point the overload protection shuts down the machine. The peak current sampling circuit monitors the peak current of the motor in real time, the overcurrent protection comparator circuit monitors the current in real time to protect the power devices, and the input AC and DC bus voltages are detected in real time to achieve over and undervoltage protection.

[0035] When the temperature of the brushless controller 4 exceeds 100 degrees Celsius, the yellow light will illuminate and the high-temperature protection will shut down the machine.

[0036] Although embodiments of the present invention have been shown and described, it should be emphasized that the above description is merely an introduction and description of the usage of the embodiments of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A simulated diamond controller implementing efficient brushless motor drive comprising a housing (8) characterized by: The shell (8) is divided into the machine body and the handle of the electric drill, the outer side wall of the machine body is inlaid with the level (1) for ensuring the level of the drill, the inside of the machine body is provided with the brushless motor, the inside of the brushless motor contains the brushless controller (4), the stator (3) and the rotor assembly (6), the front end of the rotor assembly (6) is provided with the clutch assembly (5), the clutch assembly (5) is connected with the power output end of the drill, the inside of the handle is inlaid with the capacitor (7), the capacitor (7) is connected with the brushless controller (4), the inside of the machine body is provided with the sliding gear (2) on the left side, the sliding gear (2) is sleeved on the power output end of the drill and is connected with the clutch assembly (5); The V-phase line (9), the U-phase line (10) and the W-phase line (11) are sequentially arranged from right to left above the brushless controller (4), the capacitor positive line (13), the capacitor negative line (14), the L line (15) and the N line (16) are respectively arranged on the left side of the brushless controller (4), the red-yellow lamp line (17) and the switch control line (12) are respectively arranged on the right side of the brushless controller (4), the red lamp and the yellow lamp are arranged in the middle of the brushless controller (4), and the red-yellow lamp line (17) is connected with the red lamp and the yellow lamp respectively.

2. The simulated diamond controller for implementing efficient brushless motor drive according to claim 1, wherein: The clutch assembly (5) and the sliding gear (2) are connected through the gear, the sliding gear (2), the gear and the clutch assembly (5) are used in cooperation to realize three-gear speed change, the sliding gear (2) is driven to different gears, so that the power output end of the drill realizes different rotating speeds.

3. The simulated diamond controller for implementing efficient brushless motor drive according to claim 1, wherein: The capacitor (7) is connected with the power grid or the battery, the capacitor (7) filters, decouples, stores energy and stabilizes voltage for power supply, controls the stable output power of the brushless motor and ensures the stable rotating speed.

4. The simulated diamond controller for implementing efficient brushless motor drive according to claim 1, wherein: The brushless controller (4) is internally provided with a rotating speed detector for detecting the rotation of the power output end of the drill, the power output by the rotor assembly (6) is controlled to ensure the stable rotating speed.

5. The simulated diamond controller for implementing efficient brushless motor drive according to claim 1, wherein: The brushless motor uses a permanent magnet as the rotor to realize efficient energy conversion and is more quiet.

6. The simulated diamond controller for implementing efficient brushless motor drive according to claim 1, wherein: The V-phase line (9), the U-phase line (10) and the W-phase line (11) of the brushless controller (4) are connected with the brushless motor, the L line (15) and the N line (16) input AC220V, the capacitor positive line (13) and the capacitor negative line (14) are connected with the high-voltage large-capacity 1000UF*2 smooth AC rectified DC bus voltage.

7. The simulated diamond controller for implementing efficient brushless motor drive according to claim 1, wherein: Six IGBT modules are arranged in the brushless controller (4), six high-voltage large-current IGBTs form a three-way H-bridge to replace the carbon brush to realize commutation, the gate control end of the six IGBT modules adopts a high-performance driving chip with dead zone protection to stably drive and protect the IGBT modules.

8. The simulated diamond controller for implementing efficient brushless motor drive according to claim 1, wherein: When the current of the brushless controller (4) reaches 17A, the red lamp is on, the drill reaches the peak load and starts to slow down, and the speed drops more obviously with the increase of the current until the speed drops by 55% and the overload protection stops.

9. The simulated diamond controller for implementing efficient brushless motor drive according to claim 1, wherein: When the temperature of the brushless controller (4) exceeds 100 degrees, the yellow lamp is on and the high-temperature protection stops.

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