A brushless electronic speed controller
By integrating a main control chip, a MOSFET driver module, and multiple protection modules, the brushless electronic speed controller solves the problems of insufficient current detection, protection mechanisms, and structural design in existing brushless electronic speed controllers. It achieves high-precision control, multiple protections, a compact structure, and convenient operation, making it suitable for RC model cars.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG SAID INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-07
AI Technical Summary
Existing brushless electronic speed controllers have shortcomings in current detection, protection mechanisms, structural design, and environmental adaptability. They cannot effectively deal with faults such as low voltage, overheating, signal loss, and motor stall. In addition, they are large in size, have many parts, and are inconvenient to install and maintain.
A brushless electronic speed controller was designed, comprising a main control chip, a MOSFET driver module, a Bluetooth module, and multiple protection modules. It integrates voltage detection, temperature sensor, and current sampling modules, and features protection against low voltage, overheating, signal loss, and stall. It adopts a compact structure with built-in heat dissipation components and supports convenient operation via the Bluetooth module.
It achieves high-precision control, multiple protections, compact structure, strong environmental adaptability and convenient operation, improving the operating efficiency and safety of RC model cars and reducing maintenance costs.
Smart Images
Figure CN224473229U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of brushless electronic speed controllers, specifically a brushless electronic speed controller. Background Technology
[0002] RC model cars, also known as remote-controlled model cars, or simply RC cars (full English name: Remote Control Car or Radio Control Car), are a branch of model cars, typically consisting of a car body, a remote controller, and a receiver. The motor speed controller is one of the important components of an RC model car. Traditional RC model cars usually use brushed motor speed controllers. However, because brushed motor speed controllers use carbon brushes to generate current, they suffer from short lifespan, high maintenance costs, and low efficiency, which limits further performance improvements. To overcome the shortcomings of brushed motor speed controllers, brushless electronic speed controllers have gradually become the mainstream choice. Although existing brushless electronic speed controllers have certain protection mechanisms, they are often not comprehensive enough to effectively handle multiple faults such as low voltage, overheating, signal loss, and motor stall. Moreover, most speed controllers are large in size and have many parts, increasing weight and causing inconvenience for installation and maintenance. Therefore, a brushless electronic speed controller is needed to improve upon these problems. Utility Model Content
[0003] The purpose of this invention is to provide a 45A brushless electronic speed controller with high precision, high stability, and high reliability. It aims to address the shortcomings of existing brushless electronic speed controllers in terms of current detection, protection mechanisms, structural design, and environmental adaptability. This invention has the advantages of high control precision, multiple protection mechanisms, compact structure, strong environmental adaptability, and convenient operation.
[0004] To achieve the above objectives, this utility model employs the following technical solution:
[0005] A brushless electronic speed controller includes a housing, a circuit board, a power switch structure, a servo connection structure, a brushless motor connection structure, a battery connection structure, a receiving antenna, and a heat dissipation component. The heat dissipation component is installed on the upper part of the housing, and the circuit board is installed inside the housing. The power switch structure, servo connection structure, brushless motor connection structure, battery connection structure, and receiving antenna are all electrically connected to the circuit board. The circuit board is provided with a main control chip, a MOSFET driver module, a Bluetooth module, and a protection module.
[0006] Furthermore, the protection module includes a voltage detection module, a temperature sensor, and a current sampling module.
[0007] Furthermore, the heat dissipation assembly includes a heat dissipation support shell and a heat dissipation fan. The heat dissipation support shell is fixed on the lower outer shell, and the heat dissipation fan is installed inside the heat dissipation support shell.
[0008] Furthermore, the upper end of the heat dissipation support shell is provided with heat dissipation holes, and one side end of the heat dissipation support shell is provided with a first through hole, a second through hole and an electrolytic capacitor hole. One end of the circuit board passes through the first through hole and is connected to the battery connection structure, and one end of the receiving antenna passes through the second through hole and is connected to the circuit board.
[0009] Furthermore, it also includes a fixed housing and a 2-pin connector terminal, the 2-pin connector terminal being connected to the circuit board, the upper end of the fixed housing being connected to the outer shell, the lower end of the fixed housing abutting against the circuit board, a through hole being provided inside the fixed housing, the upper end of the 2-pin connector terminal extending outward through the through hole, and the upper end of the brushless motor connection structure extending outward through the through hole.
[0010] Furthermore, the outer shell includes an upper shell and a lower shell, the lower end of the upper shell is connected to the lower shell, the upper shell is provided with a mounting hole, one end of the fixed shell is located in the mounting hole, the upper end of the upper shell is provided with a plurality of first heat dissipation support seats and a plurality of second heat dissipation support seats, the first heat dissipation support seats are located below the cooling fan, and the upper ends of the second heat dissipation support seats are inserted into the heat dissipation support shell.
[0011] Furthermore, the lower shell is provided with an assembly part, and the two sides of the lower shell are provided with mounting connection parts.
[0012] This utility model of a brushless electronic speed controller has the following beneficial effects:
[0013] 1. High-precision control: This utility model achieves precise control of the brushless motor through a built-in temperature sensor and high-precision PWM output, thereby improving the model's running efficiency;
[0014] 2. It has multiple protection mechanisms. This utility model has multiple protection functions such as low voltage, overheating, signal loss, and stall protection, which improves the safety of the equipment.
[0015] 3. Compact structure: This utility model is mainly composed of a shell, circuit board, power switch structure, servo connection structure, brushless motor connection structure, battery connection structure, receiving antenna and heat dissipation component. The heat dissipation component is installed at the upper end of the shell, and the circuit board is installed inside the shell. The overall structure is compact, with fewer components, reducing volume and weight, and facilitating installation and maintenance.
[0016] 4. Easy to operate: This utility model has a built-in Bluetooth module, which supports parameter adjustment via mobile APP, such as forward and reverse rotation limits, braking percentage, voltage protection, etc. Users can flexibly set according to their needs, making operation convenient.
[0017] 5. This utility model controls the magnetic field change electronically, eliminating the need for carbon brush contact. Compared with brushed ESCs, it has higher efficiency, longer lifespan, and lower maintenance costs, making it suitable for scenarios such as RC model cars. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the brushless electronic speed controller of this utility model. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the overall structure of the brushless electronic speed controller of this utility model. Figure 2 ;
[0020] Figure 3 This is a schematic diagram of the overall structure of the brushless electronic speed controller of this utility model. Figure 3 ;
[0021] Figure 4 This is a structural breakdown diagram of the brushless electronic speed controller of this utility model;
[0022] The diagram shows the following components: 1. Outer shell; 2. Circuit board; 3. Power switch structure; 4. Server connection structure; 5. Brushless motor connection structure; 6. Battery connection structure; 7. Receiving antenna; 8. Heat dissipation assembly; 9. Heat dissipation support shell; 10. Cooling fan; 11. Heat dissipation hole; 12. First through hole; 13. Second through hole; 14. Electrolytic capacitor hole; 15. Fixing shell; 16. 2-pin connection terminal; 17. Upper shell; 18. Lower shell; 19. First heat dissipation support base; 20. Second heat dissipation support base; 21. Assembly part; 22. Mounting connection part; 23. Server connection port; 24. Brushless motor connection port; 25. Battery connection terminal. Detailed Implementation
[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the product of this utility model will be further described in detail below with reference to the embodiments and accompanying drawings.
[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0026] like Figure 1 and Figure 4 As shown, a brushless electronic speed controller includes a housing 1, a circuit board 2, a power switch structure 3, a servo connection structure 4, a brushless motor connection structure 5, a battery connection structure 6, a receiving antenna 7, and a heat dissipation assembly 8. The heat dissipation assembly 8 is mounted on the upper end of the housing 1, and the circuit board 2 is mounted inside the housing 1. The power switch structure 3, the servo connection structure 4, the brushless motor connection structure 5, the battery connection structure 6, and the receiving antenna 7 are all electrically connected to the circuit board 2. The circuit board 2 is equipped with a main control chip, a MOSFET driver module, a Bluetooth module, and a protection module. In this embodiment, the brushless electronic speed controller is a 45A brushless electronic speed controller.
[0027] It should be noted that the main control chip, MOSFET driver module, Bluetooth module and protection module are integrated on the same circuit board 2, and the layout is optimized for signal integrity; the circuit board 2 in this embodiment can be coated with a nano-coating, and the key joint solder joints are potted with epoxy resin, which can achieve an IP67 protection level.
[0028] It should be further noted that the main control chip in this embodiment can be the AT32F421 processor, which has high-precision PWM output and low power consumption characteristics, which is beneficial to the precise control of the brushless motor.
[0029] The driving circuit in this embodiment uses an integrated MOSFET driving module, which supports 45A continuous current output and 50A peak current output, and has fast response capability.
[0030] like Figure 1 and Figure 2 As shown, the protection module includes a voltage detection module, a temperature sensor, and a current sampling module.
[0031] It should be noted that the protection mechanism of this utility model is as follows:
[0032] Low voltage cut-off protection: When the battery voltage is lower than the set threshold, the power is automatically cut off to prevent the battery from being over-discharged. Specifically, the voltage detection module samples the battery voltage through the ADC and compares it with the threshold, and the MOSFET drive module cuts off the power output.
[0033] Overheat protection: The speed controller temperature is monitored by a temperature sensor, and the frequency is automatically reduced or the machine is stopped when the temperature exceeds the safe range;
[0034] Throttle signal loss protection: When the remote control signal is interrupted, the speed controller automatically enters the safety mode to prevent motor runaway. That is, the main control chip monitors the throttle channel signal in real time. If no valid PWM signal is received for a period of time, the protection is triggered.
[0035] Motor stall protection: Detects whether the motor is stalled. If stalling continues, it will automatically cut off the power to prevent the motor from burning out. This is achieved by monitoring the motor phase current through a current sampling module and triggering protection when an abnormality is detected. If the motor does not reach the normal speed within a certain period of time after starting, it will be forcibly stopped and the throttle signal will need to be reinitialized.
[0036] like Figure 4 As shown, the heat dissipation assembly 8 includes a heat dissipation support shell 9 and a heat dissipation fan 10. The heat dissipation support shell 9 is fixed on the lower outer shell 1, and the heat dissipation fan 10 is installed inside the heat dissipation support shell 9.
[0037] like Figure 4 As shown, the upper end of the heat dissipation support shell 9 is provided with heat dissipation holes 11, and one side end of the heat dissipation support shell 9 is provided with a first through hole 12, a second through hole 13, and an electrolytic capacitor hole 14. One end of the circuit board 2 passes through the first through hole 12 and is connected to the battery connection structure 6, and one end of the receiving antenna 7 passes through the second through hole 13 and is connected to the circuit board 2. The electrolytic capacitor hole 14 is used to install two electrolytic capacitors on the circuit board 2.
[0038] like Figure 3 As shown, it also includes a fixed housing 15 and a 2-pin connection terminal 16. The 2-pin connection terminal 16 is connected to the circuit board 2. The upper end of the fixed housing 15 is connected to the outer shell 1. The lower end of the fixed housing 15 abuts against the circuit board 2. The fixed housing 15 has a through hole. The upper end of the 2-pin connection terminal 16 extends outward through the through hole. The upper end of the brushless motor connection structure 5 extends outward through the through hole.
[0039] like Figure 4 As shown, the outer shell 1 includes an upper shell 17 and a lower shell 18. The lower end of the upper shell 17 is connected to the lower shell 18. The upper shell 17 is provided with a mounting hole. One end of the fixed shell 15 is located in the mounting hole. The upper end of the upper shell 17 is provided with a plurality of first heat dissipation support seats 19 and a plurality of second heat dissipation support seats 20. The first heat dissipation support seats 19 are located below the cooling fan 10. The upper ends of the second heat dissipation support seats 20 are inserted into the heat dissipation support shell 9.
[0040] It should be noted that the design of the first heat dissipation support 19 and the second heat dissipation support 20 is beneficial to the heat dissipation of this utility model.
[0041] like Figure 4As shown, the upper shell 17 is made of an integrated injection molded or CNC metal shell, and the lower shell 18 is made of an integrated injection molded or CNC metal shell. In this embodiment, a silicone gasket is provided at the joint between the upper shell 17 and the lower shell 18, and a seamless seal is achieved by combining ultrasonic welding process, which can reach IP67 level waterproof and dustproof, and is suitable for complex environments such as outdoor, humid, and muddy conditions.
[0042] like Figure 4 As shown, the lower shell 18 is provided with an assembly part 21, and the lower shell 18 is provided with mounting connection parts 22 on both sides.
[0043] like Figures 1 to 4 As shown, the receiving antenna 7 is used to receive the wireless signal transmitted by the remote control and is responsible for transmitting the remote control command to the main control chip.
[0044] like Figures 1 to 4 As shown, this utility model has a built-in Bluetooth module with APP debugging function, which supports parameter adjustment via mobile APP. Parameters such as forward and reverse rotation limits, braking percentage, and voltage protection can be adjusted by connecting to the mobile APP through the Bluetooth module. Users can flexibly set these parameters according to their needs, making the operation convenient.
[0045] like Figures 1 to 4 As shown, the circuit board 2 is also equipped with a BEC voltage regulator module, which provides a 5V / 5A BEC output, and can provide a stable power supply for the servo motor and receiver.
[0046] like Figures 1 to 4 As shown, the server connection structure 4 includes a server connection port 23 and a server connection cable.
[0047] It should be noted that the receiver or servo expansion board is connected via servo connection port 23 to receive steering control signals and drive the servo.
[0048] like Figures 1 to 4 As shown, the brushless motor connection structure 5 includes a brushless motor connection port 24 and a brushless motor connection cable.
[0049] It should be noted that the brushless motor is connected via three wires (three phases), and the regulated voltage and current are output to the brushless motor to drive it to rotate.
[0050] like Figures 1 to 4 As shown, the battery connection structure 6 includes a battery connection terminal 25 and a battery connection wire.
[0051] It should be noted that the battery connection terminal 25 is used to connect the power battery to supply power to the electronic speed controller and the motor, providing a power source.
[0052] like Figures 1 to 4As shown, the power switch structure 3 includes components such as a power switch button, a switch base shell, a switch mounting shell 15, and a switch PCB board. This structure is conventional technology, so it will not be described in detail here. The power switch structure 3 is used to quickly control battery power supply and prevent accidental start-up or short circuit.
[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Those skilled in the art can readily implement the present utility model according to the accompanying drawings and the above description. However, any modifications, alterations, or equivalent changes made by those skilled in the art without departing from the scope of the present utility model's technical solution, based on the disclosed technical content, are all equivalent embodiments of the present utility model. Furthermore, any equivalent changes, alterations, or evolutions made to the above embodiments based on the essential technology of the present utility model still fall within the technical solution of the present utility model.
Claims
1. A brushless electronic speed controller, characterized in that: It includes a housing (1), a circuit board (2), a power switch structure (3), a server connection structure (4), a brushless motor connection structure (5), a battery connection structure (6), a receiving antenna (7), and a heat dissipation component (8). The heat dissipation component (8) is installed on the upper end of the housing (1), and the circuit board (2) is installed inside the housing (1). The power switch structure (3), the server connection structure (4), the brushless motor connection structure (5), the battery connection structure (6), and the receiving antenna (7) are all electrically connected to the circuit board (2). The circuit board (2) is equipped with a main control chip, a MOSFET drive module, a Bluetooth module, and a protection module.
2. The brushless electronic speed controller according to claim 1, characterized in that: The protection module includes a voltage detection module, a temperature sensor, and a current sampling module.
3. The brushless electronic speed controller according to claim 2, characterized in that: The heat dissipation assembly (8) includes a heat dissipation support shell (9) and a heat dissipation fan (10). The heat dissipation support shell (9) is fixed on the lower outer shell (1), and the heat dissipation fan (10) is installed inside the heat dissipation support shell (9).
4. The brushless electronic speed controller according to claim 3, characterized in that: The upper end of the heat dissipation support shell (9) is provided with heat dissipation holes (11). One side end of the heat dissipation support shell (9) is provided with a first through hole (12), a second through hole (13) and an electrolytic capacitor hole (14). One end of the circuit board (2) passes through the first through hole (12) and is connected to the battery connection structure (6). One end of the receiving antenna (7) passes through the second through hole (13) and is connected to the circuit board (2).
5. The brushless electronic speed controller according to claim 4, characterized in that: It also includes a fixed shell (15) and a 2PIN connection terminal (16). The 2PIN connection terminal (16) is connected to the circuit board (2). The upper end of the fixed shell (15) is connected to the outer shell (1). The lower end of the fixed shell (15) abuts against the circuit board (2). The fixed shell (15) has a through hole. The upper end of the 2PIN connection terminal (16) extends outward through the through hole. The upper end of the brushless motor connection structure (5) extends outward through the through hole.
6. The brushless electronic speed controller according to claim 5, characterized in that: The outer shell (1) includes an upper shell (17) and a lower shell (18). The lower end of the upper shell (17) is connected to the lower shell (18). The upper shell (17) is provided with mounting holes. One end of the fixed shell (15) is located in the mounting holes. The upper end of the upper shell (17) is provided with a plurality of first heat dissipation support seats (19) and a plurality of second heat dissipation support seats (20). The first heat dissipation support seats (19) are located below the cooling fan (10). The upper end of the second heat dissipation support seats (20) is inserted into the heat dissipation support shell (9).
7. The brushless electronic speed controller according to claim 6, characterized in that: The lower shell (18) is provided with an assembly part (21), and the lower shell (18) is provided with mounting connection parts (22) on both sides.