Capacitor mounting structure, electronic speed regulator and unmanned aerial vehicle
By designing a capacitor mounting structure, the problem of insufficient internal space in the drone was solved, a stable connection between the capacitor and the power line was achieved, and the assembly efficiency of the electronic speed controller and the flight stability of the drone were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN FLYCOLOR ELECTRONICS
- Filing Date
- 2025-04-27
- Publication Date
- 2026-05-01
AI Technical Summary
Insufficient internal space in drones prevents the installation of plug-in electrolytic capacitors, and the pins are prone to burnout due to high current overload, resulting in poor filtering of the electronic speed controller and affecting flight stability.
Design a capacitor mounting structure including a capacitor mounting section and a power mounting section, arranged side by side, to provide a fixed connection position and a power connection port, ensuring a stable connection between the capacitor and the power line. The integrated structure enhances the connection strength, and a foolproof design prevents incorrect installation.
It saves installation space, improves the connection stability of capacitors and power lines, reduces incorrect connections, enhances the assembly efficiency and quality of electronic speed controllers, ensures normal circuit operation, and improves the flight stability and control performance of drones.
Smart Images
Figure CN224190809U_ABST
Abstract
Description
Capacitor mounting structure, electronic speed controller and drone Technical Field
[0001] This utility model relates to the field of electronic speed controller technology, and in particular to a capacitor mounting structure, an electronic speed controller, and a drone. Background Technology
[0002] An electronic speed controller (ESC) is a device that regulates the speed of a motor through electronic control circuitry. It can precisely control the motor's operating speed based on external input signals (such as voltage, current, frequency, or pulse signals). Depending on functional requirements, ESCs typically have capacitors connected in parallel across the positive and negative terminals of the power supply. These capacitors, along with other components on the ESC, filter and buffer peak voltages to prevent damage to downstream electronic components.
[0003] Currently, capacitors on the market are either surface-mount capacitors placed on the positive and negative lines of the PCB, or through-hole filter capacitors soldered to the positive and negative terminals of the power input. Due to increasingly limited internal space in modern drones, insufficient space may prevent the placement of through-hole electrolytic capacitors (filter capacitors). In such cases, the capacitors must be mounted far beyond the space constraints, requiring sufficiently long leads. However, electrolytic capacitor leads are typically only 0.6-0.7mm long. During high-speed drone flight, large currents are generated, making the capacitor leads highly susceptible to overload and burnout, leading to poor filtering in the electronic speed controller and abnormal flight. Summary of the Invention
[0004] The main purpose of this invention is to propose a capacitor mounting structure, an electronic speed controller, and a drone, which aims to facilitate the installation of capacitors in electronic speed controllers.
[0005] To achieve the above objectives, the capacitor mounting structure proposed in this utility model includes:
[0006] A capacitor mounting portion having a first mounting hole for connecting capacitor leads;
[0007] The power supply mounting part is arranged side by side with the capacitor mounting part. The power supply mounting part has a second mounting hole for connecting a power plug.
[0008] In one embodiment, the capacitor mounting portion and the power supply mounting portion are an integral structure.
[0009] In one embodiment, the first mounting hole includes two sets, and the two sets of the first mounting hole are arranged side by side at intervals.
[0010] In one embodiment, the diameter of the first mounting hole is d1, 0.6mm≤d1≤0.8mm, and the diameter of the second mounting hole is d2, 4mm≤d2≤5mm.
[0011] In one embodiment, the capacitor mounting structure is a PCB board.
[0012] In one embodiment, the capacitor mounting structure further includes a foolproof part, which is disposed on one side of the capacitor mounting part and / or the power supply mounting part in the width direction, and the foolproof part has a different structural shape from the opposite side.
[0013] In one embodiment, the foolproof part is a notch provided on one side of the power supply mounting part in the width direction.
[0014] This utility model also proposes an electronic speed controller, which includes the capacitor mounting structure, speed controller body, filter capacitor, power cord and power plug described above. The capacitor mounting structure is connected to the power plug, the pins of the filter capacitor are connected to the first mounting hole, one end of the power cord is connected to the speed controller body, and the other end is connected to the power plug through the second mounting hole.
[0015] This utility model also proposes an unmanned aerial vehicle (UAV) that includes the electronic speed controller described above.
[0016] This utility model proposes a capacitor mounting structure, including a capacitor mounting section and a power supply mounting section. The side-by-side arrangement of the capacitor and power supply allows for a relatively compact spatial layout, saving overall installation space. The first mounting hole in the capacitor mounting section provides a fixed connection position for the capacitor pins, ensuring a stable connection in the circuit after installation, thus guaranteeing the capacitor's proper functioning in filtering and energy storage. The second mounting hole in the power supply mounting section facilitates connection of the capacitor mounting structure to a power plug, ensuring the stability of the filter capacitor and the overall capacitor mounting structure. Furthermore, the second mounting hole provides a connection port for the power cord, allowing for convenient connection of the power cord to the mounting structure, thereby providing a stable power input to the entire circuit system, ensuring normal circuit operation and the proper functioning of all electronic components. This separate mounting hole structure also facilitates the separate positioning and fixing of the capacitor and power cord during installation, improving installation accuracy and convenience, reducing potential connection errors during installation, and contributing to improved assembly efficiency and quality of the entire electronic speed controller. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0018] Figure 1 is a schematic diagram of an embodiment of the capacitor mounting structure provided by this utility model;
[0019] Figure 2 is a structural schematic diagram of an embodiment of the electronic speed controller provided by this utility model;
[0020] Figure 3 is a schematic diagram of the exploded structure of the electronic speed controller in Figure 2.
[0021] Explanation of icon numbers:
[0022] 100. Electronic speed controller; 10. Capacitor mounting structure; 11. Capacitor mounting part; 111. First mounting hole; 12. Power supply mounting part; 121. Second mounting hole; 13. Foolproof part; 20. Speed controller body; 30. Filter capacitor; 40. Power cord; 50. Power plug.
[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0027] An electronic speed controller (ESC) is a device that regulates the speed of a motor through electronic control circuitry. It can precisely control the motor's operating speed based on external input signals (such as voltage, current, frequency, or pulse signals). Depending on functional requirements, ESCs typically have capacitors connected in parallel across the positive and negative terminals of the power supply. These capacitors, along with other components on the ESC, filter and buffer peak voltages to prevent damage to downstream electronic components.
[0028] Currently, capacitors on the market are either surface-mount capacitors placed on the positive and negative lines of the PCB, or through-hole filter capacitors soldered to the positive and negative terminals of the power input. Due to increasingly limited internal space in modern drones, insufficient space may prevent the placement of through-hole electrolytic capacitors (filter capacitors). In such cases, the capacitors must be mounted far beyond the space constraints, requiring sufficiently long leads. However, electrolytic capacitor leads are typically only 0.6-0.7mm long. During high-speed drone flight, large currents are generated, making the capacitor leads highly susceptible to overload and burnout, leading to poor filtering in the electronic speed controller and abnormal flight.
[0029] To solve the above problems, this utility model proposes a capacitor mounting structure 10, including a capacitor mounting part 11 and a power mounting part 12. The capacitor mounting part 11 has a first mounting hole 111 for connecting capacitor leads. The power mounting part 12 is arranged side by side with the capacitor mounting part 11 and has a second mounting hole 121 for connecting a power plug 50.
[0030] This utility model proposes a capacitor mounting structure 10, including a capacitor mounting part 11 and a power supply mounting part 12. The side-by-side arrangement of the capacitor and power supply makes the spatial layout relatively compact, saving overall installation space. The first mounting hole 111 of the capacitor mounting part 11 provides a fixed connection position for the capacitor pins, ensuring that the capacitor is stably connected to the circuit after installation, thereby guaranteeing that the capacitor can properly perform its filtering and energy storage functions. The second mounting hole 121 of the power supply mounting part 12 facilitates the connection of the capacitor mounting structure 10 to the power plug 50, ensuring the overall stability of the filter capacitor 30 and the capacitor mounting structure 10. Furthermore, the second mounting hole 121 provides a connection port for the power cord 40, allowing the power cord 40 to be easily connected to the mounting structure, thereby providing a stable power input for the entire circuit system, ensuring the normal operation of the circuit and the normal operation of each electronic component. This separate mounting hole structure also facilitates the separate positioning and fixing of the capacitor and the power cord 40 during installation, improving the accuracy and convenience of installation, reducing possible incorrect connections during installation, and helping to improve the assembly efficiency and quality of the entire electronic speed controller 100.
[0031] In an optional embodiment, to facilitate the integral molding of the capacitor mounting structure 10, the capacitor mounting part 11 and the power mounting part 12 are integrated. This integrated design allows the capacitor mounting part 11 and the power mounting part 12 to be formed as a single unit during manufacturing, significantly enhancing the connection strength and stability between them. This prevents loosening or separation due to prolonged use or external vibrations, ensuring a stable connection between the capacitor pins and the power line 40 throughout their lifespan and guaranteeing reliable circuit operation. Furthermore, the integrated structure simplifies the manufacturing process, reduces the number of components and assembly steps, lowers production costs, and improves efficiency. It also facilitates overall replacement or repair during subsequent maintenance and repair, eliminating the need to separately handle the capacitor mounting part 11 and the power mounting part 12, thus saving time and labor costs.
[0032] In an optional embodiment, to improve the adaptability of the capacitor mounting structure 10 to capacitors of different sizes, the first mounting hole 111 includes two sets, with the two sets of first mounting holes 111 arranged side by side at intervals.
[0033] Setting two sets of parallel, spaced first mounting holes 111 can meet the installation requirements of capacitor pins of different specifications or numbers, providing greater flexibility and adaptability for circuit design. Optionally, in other embodiments, when multiple capacitors need to be installed, sufficient installation space can be ensured by adjusting the spacing between the first mounting holes 111. The capacitor pins can be inserted into different first mounting holes 111 respectively, enabling the simultaneous installation of multiple capacitors. The parallel, spaced layout helps to rationally allocate the position of capacitors on the circuit board, optimize the circuit layout, and avoid problems such as mutual interference or poor heat dissipation caused by excessively dense installation of capacitors. It also facilitates precise positioning of capacitors during installation, improving installation efficiency and quality, ensuring stable and reliable electrical performance of the capacitors after installation, and better fulfilling their role in the circuit, such as filtering and bypassing, thereby improving the performance and stability of the entire electronic device. In this embodiment, please refer to Figure 2. Two first mounting holes 111 at the same horizontal level form a group, and each group of first mounting holes 111 is used to install two pins of the capacitor. Two sets of first mounting holes 111 are spaced vertically along the height of the capacitor mounting structure 10 to facilitate the installation of filter capacitors 30 of different sizes. When the capacitor is small, it can be installed in the lower first mounting hole 111. When the capacitor is large, it requires more installation space, so it is installed in the upper first mounting hole 111 to ensure sufficient space to accommodate the capacitor. For example, in this embodiment, the two sets of first mounting holes 111 can respectively install 10mm and 12mm diameter plug-in electrolytic capacitors (filter capacitors 30). The specific spacing between the first mounting holes 111 can be adapted to the actual size of the filter capacitor 30.
[0034] In an optional embodiment, the diameter of the first mounting hole 111 is d1, 0.6mm≤d1≤0.8mm, and the diameter of the second mounting hole 121 is d2, 4mm≤d2≤5mm. Controlling the diameter of the first mounting hole 111 between 0.6mm and 0.8mm allows for precise matching of common capacitor pin sizes, ensuring smooth insertion and secure mounting of the capacitor pins while avoiding problems such as poor contact or loosening between the pins and the hole wall due to excessively large hole diameters. This ensures good electrical connection and mechanical stability between the capacitor and the circuit board. The diameter of the second mounting hole 121, within the range of 4mm to 5mm, can accommodate various diameter power cables 40, meeting the connection requirements of power cables 40 under different power and application scenarios. This makes the capacitor mounting structure 10 widely applicable, enabling reliable connection with various specifications of power cables 40, providing a stable and safe power input to the circuit, ensuring the normal operation of the entire electronic speed controller 100, and also facilitating the selection of appropriate power cables 40 according to actual needs during design and production, thus improving design and production flexibility. Specifically, in this embodiment, the diameter of the first mounting hole 111 is 0.7 mm and the diameter of the second mounting hole 121 is 4.5 mm. In other embodiments, the diameters of the first mounting hole 111 and the second mounting hole 121 can be adjusted according to actual needs.
[0035] In an optional embodiment, the capacitor mounting structure 10 is a PCB board. As a carrier of electronic components, the PCB board possesses excellent electrical and mechanical properties, providing a stable mounting platform for capacitor pins and power lines 40. Furthermore, circuit wiring can be pre-designed on the PCB board, allowing for easy electrical connection with other circuit components after capacitor mounting, forming a complete circuit system and improving circuit integration and reliability. In addition, PCB board manufacturing technology is mature, enabling high-precision processing and large-scale production, which helps reduce production costs and improve production efficiency. It also facilitates subsequent automated assembly and testing, enhancing the overall manufacturing quality and production speed of electronic devices, making them more suitable for the modern trend of miniaturization and high performance.
[0036] In an optional embodiment, the capacitor mounting structure 10 further includes a foolproof part 13, which is located on one side of the capacitor mounting portion 11 and / or the power mounting portion 12 in the width direction. The foolproof part 13 has a different structural shape than the opposite side. The design of the foolproof part 13 can prevent circuit failures or component damage caused by incorrect operation such as reverse insertion or incorrect insertion of the capacitor or power line 40 during the installation process. By providing a foolproof part 13 with a different structural shape than the opposite side on one side of the capacitor mounting portion 11 and / or the power mounting portion 12 in the width direction, when the capacitor pin or power line 40 attempts to be inserted into the mounting hole in the wrong direction, the foolproof part 13 will act as a blocker, reminding the operator to make the correct installation orientation adjustment. This effectively avoids a series of problems such as short circuits, open circuits, and component overheating damage that may be caused by incorrect installation, improves the accuracy and safety of installation, reduces the scrap rate in the production process and after-sales maintenance costs, and helps to improve the overall quality and reliability of electronic equipment. Optionally, the foolproof part 13 can be provided on either the capacitor mounting part 11 or the power supply mounting part 12, or on both, depending on the actual needs.
[0037] Furthermore, the capacitor mounting structure 10 also includes a foolproof part 13, which is located on one side of the capacitor mounting part 11 and / or the power mounting part 12 in the width direction. The foolproof part 13 has a different structural shape than the opposite side. In this embodiment, the foolproof part 13 is a notch located on one side of the power mounting part 12 in the width direction. This design is simple, intuitive, and easy to implement. The shape and position of the notch allow operators to quickly and accurately distinguish the front and back of the capacitor mounting structure 10 during assembly, thus clearly prompting operators to adjust the insertion direction of the power cord 40 to ensure correct installation. This notch-type foolproof design effectively improves the accuracy of power cord 40 installation without increasing manufacturing costs and complexity, avoiding problems such as power polarity errors caused by reversed power cord 40 connection, thereby protecting the entire circuit system from damage and ensuring stable and safe operation of electronic equipment. It also facilitates quick and accurate operation during subsequent maintenance and replacement of the power cord 40, improving the maintainability of the equipment.
[0038] This utility model also proposes an electronic speed controller 100, which includes a capacitor mounting structure 10, a speed controller body 20, a filter capacitor 30, a power cord 40, and a power plug 50. The capacitor mounting structure 10 is connected to the power plug 50. The pins of the filter capacitor 30 are connected to the first mounting hole 111. One end of the power cord 40 is connected to the speed controller body 20, and the other end is connected to the power plug 50 through the second mounting hole 121. For details, please refer to Figures 2 and 3. Two cable mounting portions extend outward from the end of the power plug 50 near the capacitor mounting structure 10. The two second mounting holes 121 on the capacitor mounting structure 10 can be fitted one-to-one into the cable mounting portions, and the capacitor mounting structure 10 is fixed to the power plug 50 by welding to ensure overall stability and connection strength. The power cord 40 passes through the second mounting holes 121 and is inserted into the corresponding cable mounting portions, thereby realizing the connection between the various components. The specific structure of the capacitor mounting structure 10 is as described in the above embodiments. Since this electronic speed controller 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here. This integrated structural design helps to optimize the internal spatial layout of the electronic speed controller 100, improve the reliability of the connection between components, and the correct installation of the filter capacitor 30 can effectively filter out noise in the power supply, providing a stable and clean power supply for the electronic speed controller 100, and ensuring its precise speed control function for loads such as motors. At the same time, the convenient connection method of the power cord 40 and the power plug 50 also facilitates the use and replacement of the electronic speed controller 100 in different power environments, and improves the overall performance, stability and practicality of the electronic speed controller 100, enabling it to better meet the requirements of speed control accuracy, reliability and portability in application fields such as drones.
[0039] This utility model also proposes a drone, which includes the aforementioned electronic speed controller 100. This optimized speed controller is used in the drone's motor speed control system. Due to its advantages such as excellent power filtering performance, stable component connection structure, and reliable foolproof design, the speed controller can provide precise and stable speed control for the drone's motor, thereby ensuring the drone's attitude stability and smooth flight during flight, improving its handling performance and flight safety. At the same time, the rational structural design of the electronic speed controller 100 helps reduce the overall weight of the drone, optimize internal space layout, and increase the drone's payload and endurance, enabling it to better complete flight missions in various complex environments and meeting the application needs of modern drones in multiple fields such as aerial photography, logistics transportation, and agricultural plant protection.
[0040] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A capacitor mounting structure, characterized in that, include: A capacitor mounting portion having a first mounting hole for connecting capacitor leads; The power supply mounting part is arranged side by side with the capacitor mounting part. The power supply mounting part has a second mounting hole for connecting a power plug.
2. The capacitor mounting structure as described in claim 1, characterized in that, The capacitor mounting section and the power supply mounting section are an integral structure.
3. The capacitor mounting structure as described in claim 1, characterized in that, The first mounting hole includes two sets, and the two sets of the first mounting hole are arranged side by side at intervals.
4. The capacitor mounting structure as described in claim 1, characterized in that, The diameter of the first mounting hole is d1, 0.6mm≤d1≤0.8mm, and the diameter of the second mounting hole is d2, 4mm≤d2≤5mm.
5. The capacitor mounting structure as described in claim 1, characterized in that, The capacitor mounting structure is a PCB board.
6. The capacitor mounting structure as described in any one of claims 1 to 5, characterized in that, The capacitor mounting structure also includes a foolproof part, which is located on one side of the capacitor mounting part and / or the power supply mounting part in the width direction, and the foolproof part has a different structural shape from the opposite side.
7. The capacitor mounting structure as described in claim 6, characterized in that, The foolproof part is a notch located on one side of the power supply mounting part in the width direction.
8. An electronic speed controller, characterized in that, The device includes a capacitor mounting structure as described in any one of claims 1 to 7, a speed controller body, a filter capacitor, a power cord, and a power plug. The capacitor mounting structure is connected to the power plug, the pins of the filter capacitor are connected to the first mounting hole, one end of the power cord extending in the direction of extension is connected to the speed controller body, and the other end is connected to the power plug through the second mounting hole.
9. A drone, characterized in that, Includes the electronic speed controller as described in claim 8.