12-slot 10-pole two-path parallel servo motor stator PCB

Abstract

The invention relates to the technical field of servo motor stator circuit boards, in particular to a 12-slot 10-pole two-path parallel servo motor stator PCB which comprises a PCB body and an A / B face, 12 welding slot units are arranged along the edge of the PCB body in the circumferential direction, each welding slot unit comprises two welding slots, and 24 welding slots are arranged in total; the A surface is provided with a U bonding pad, a V bonding pad, a W bonding pad and A surface wiring, and the A surface wiring comprises A surface first circuit wiring to A surface sixth circuit wiring; b-surface wiring is arranged on the B surface and comprises a first B-surface circuit wiring to a ninth B-surface circuit wiring; a first through hole to a fifth through hole are formed in the PCB body and serve as channels for electrical connection between the A surface and the B surface; the coil windings corresponding to the 24 welding grooves are connected according to 10-pole magnetic field distribution requirements through cooperation of the A-face wiring, the B-face wiring and the first through hole to the fifth through hole, and a two-parallel-two-series circuit structure is formed. By connecting circuits into a two-parallel two-series topology, the distribution of a stator magnetic field of the motor is adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of servo motor stator circuit boards, and in particular to a 12-slot, 10-pole, 2-way parallel servo motor stator PCB board. Background Art

[0002] In the field of servo motor technology, with the continuous advancement of automated production, the application of PCB boards in servo motors has matured. Servo motors, as core drive components in industrial automation and other scenarios, account for a large proportion of the market in the 400W-3000W power range. These motors generally adopt a 12-slot, 10-pole design.

[0003] Traditionally, PCBs designed for 12-slot, 10-pole motors in this power range typically utilize a four-layer layout. Implementing these four layers on a single PCB requires three layers of insulation, which increases the PCB's manufacturing cost. Furthermore, with the market demand for cost reduction in servo motors increasing, existing PCB solutions struggle to meet competitive market demands in terms of cost control, necessitating urgent optimization and improvement.

[0004] Servo motor production, on the other hand, faces diverse requirements, requiring adaptability to both pinned and pinless stators, while also addressing both automated and non-automated production processes. However, current PCB solutions for 12-slot, 10-pole motors lack adaptability and process compatibility, failing to adequately cover diverse production scenarios.

[0005] Therefore, in order to enhance product competitiveness and meet the servo motor industry's needs for cost reduction and diversified applications, there is an urgent need for a PCB board optimization solution for mainstream 12-slot 10-pole motors. By reasonably simplifying the number of circuit layers and reducing the number of insulation layers, the cost of parts can be reduced while ensuring motor performance, while adapting to different motor stator types and production processes. Summary of the Invention

[0006] The purpose of the present invention is to overcome the problems of the above-mentioned prior art and provide a 12-slot, 10-pole, 2-way parallel servo motor stator PCB board to solve the technical problems of the traditional four-layer circuit + three-layer insulation solution, such as the large number of circuit layers and insulation layers, high material costs and difficult production processes, as well as the incompatibility of pin-type stators and pinless stators.

[0007] The above objectives are achieved through the following technical solutions: A 12-slot, 10-pole, 2-way parallel servo motor stator PCB board includes a PCB board body, one side of the PCB board body is used as the A side, and the other side is used as the B side. Along the edge of the PCB board body, 12 solder slot units are circumferentially arranged for corresponding to the 12 coil windings constituting the motor stator. Each solder slot unit includes two solder slots, and the PCB board body is provided with a total of 24 solder slots. The A side is arranged with a U solder pad, a V solder pad, a W solder pad, and an A side wiring. The A side wiring includes an A side first circuit wiring, an A side second circuit wiring, an A side third circuit wiring, an A side fourth circuit wiring, an A side fifth circuit wiring, and an A side sixth circuit wiring for A side circuit connection. The U solder pad, V solder pad, and W solder pad are respectively used to connect to the external three-phase line UVW Wiring; the B side is arranged with B side wiring, including B side first circuit wiring, B side second circuit wiring, B side third circuit wiring, B side fourth circuit wiring, B side fifth circuit wiring, B side sixth circuit wiring, B side seventh circuit wiring, B side eighth circuit wiring and B side ninth circuit wiring, which are used for B side circuit connection; the PCB board body is provided with a first via hole, a second via hole, a third via hole, a fourth via hole and a fifth via hole, which serve as channels for electrical connection between the A side and the B side; through the cooperation of the A side wiring, the B side wiring, the first via hole, the second via hole, the third via hole, the fourth via hole and the fifth via hole, the coil windings corresponding to the 24 solder slots are connected according to the 10-pole magnetic field distribution requirements to form a two-parallel and two-series circuit structure.

[0008] Furthermore, the 12 welding tank units include: welding tank unit A, welding tank unit B, welding tank unit C, welding tank unit D, welding tank unit E, welding tank unit F, welding tank unit G, welding tank unit H, welding tank unit I, welding tank unit J, welding tank unit K and welding tank unit L.

[0009] Furthermore, the V pad is connected to the sixth circuit wiring of the B side through the fourth via, and the two ends of the sixth circuit wiring of the B side are respectively connected to the solder slot unit A and the solder slot unit H; the solder slot unit A is connected to the solder slot unit B through the first circuit wiring of the B side, and the solder slot unit B is connected to the first circuit wiring of the A side; the solder slot unit H is connected to the solder slot unit G through the fifth circuit wiring of the A side, and the solder slot unit G is connected to the sixth circuit wiring of the A side through the seventh circuit wiring of the B side through the fifth via; the W pad is connected to the solder slot unit L through the fourth circuit wiring of the A side, and the W pad is also connected to the third circuit wiring of the B side through the first via, and the third circuit wiring of the B side is connected to the solder slot unit E; the solder slot unit E is connected to the solder slot unit F is connected, the solder slot unit F is connected to the first circuit wiring of the A side; the solder slot unit L is connected to the solder slot unit K through the eighth circuit wiring of the B side, and the solder slot unit K is connected to the sixth circuit wiring of the A side; the U pad is connected to the solder slot unit I and the third circuit wiring of the A side, the third circuit wiring of the A side is connected to the fifth circuit wiring of the B side through the third via, the fifth circuit wiring of the B side is connected to the second circuit wiring of the A side through the second via, the second circuit wiring of the A side is connected to the solder slot unit D, the solder slot unit D is connected to the solder slot unit C through the fourth circuit wiring of the B side, and the solder slot unit C is connected to the first circuit wiring of the A side; the solder slot unit I is connected to the solder slot unit J through the ninth circuit wiring of the B side, and the solder slot unit J is connected to the sixth circuit wiring of the A side.

[0010] Further, the weld groove unit A includes a first weld groove and a second weld groove, the weld groove unit B includes a third weld groove and a fourth weld groove, the weld groove unit C includes a fifth weld groove and a sixth weld groove, the weld groove unit D includes a seventh weld groove and an eighth weld groove, the weld groove unit E includes a ninth weld groove and a tenth weld groove, the weld groove unit F includes an eleventh weld groove and a twelfth weld groove, the weld groove unit G includes a thirteenth weld groove and a fourteenth weld groove, the weld groove unit H includes a fifteenth weld groove and a sixteenth weld groove, the weld groove unit I includes a seventeenth weld groove and an eighteenth weld groove, the weld groove unit J includes a nineteenth weld groove and a twentieth weld groove, the weld groove unit K includes a twenty-first weld groove and a twenty-second weld groove, and the weld groove unit L includes a twenty-third weld groove and a twenty-fourth weld groove.

[0011] Furthermore, the V solder pad is connected to the sixth circuit wiring of the B side through the fourth via, and the two ends of the sixth circuit wiring of the B side are respectively connected to the first solder groove and the fifteenth solder groove; the second solder groove is connected to the fourth solder groove through the first circuit wiring of the B side, and the third solder groove is connected to the first circuit wiring of the A side; the sixteenth solder groove is connected to the fourteenth solder groove through the fifth circuit wiring of the A side, and the thirteenth solder groove is connected to the sixth circuit wiring of the A side through the seventh circuit wiring of the B side through the fifth via; the W solder pad is connected to the twenty-third solder groove through the fourth circuit wiring of the A side, and the W solder pad is also connected to the third circuit wiring of the B side through the first via, and the third circuit wiring of the B side is connected to the ninth solder groove; the tenth solder groove is connected to the twelfth solder groove through the second circuit wiring of the B side The eleventh solder groove is connected to the first circuit wiring of the A side; the twenty-fourth solder groove is connected to the twenty-second solder groove through the eighth circuit wiring of the B side, and the twenty-first solder groove is connected to the sixth circuit wiring of the A side; the U solder pad is connected to the seventeenth solder groove and the third circuit wiring of the A side, the third circuit wiring of the A side is connected to the fifth circuit wiring of the B side through the third via, the fifth circuit wiring of the B side is connected to the second circuit wiring of the A side through the second via, the second circuit wiring of the A side is connected to the seventh solder groove, the eighth solder groove is connected to the sixth solder groove through the fourth circuit wiring of the B side, and the fifth solder groove is connected to the first circuit wiring of the A side; the eighteenth solder groove is connected to the twentieth solder groove through the ninth circuit wiring of the B side, and the nineteenth solder groove is connected to the sixth circuit wiring of the A side.

[0012] Furthermore, the PCB board body uses FR-4 epoxy glass cloth laminate as the substrate material.

[0013] Furthermore, the A-side wiring and the B-side wiring both use electrolytic copper foil as a conductive material.

[0014] Furthermore, solder resist ink is coated on the surfaces of the A-side wiring and the B-side wiring.

[0015] Furthermore, a plurality of positioning grooves are provided on the PCB board body.

[0016] Furthermore, a plurality of fool-proof grooves are provided on the PCB board body.

[0017] The present invention provides a 12-slot, 10-pole, 2-way parallel servo motor stator PCB board. By optimizing the circuit connection to a two-parallel, two-string topology, it adapts to the magnetic field distribution of the 12-slot, 10-pole motor stator. With the help of edge positioning grooves and anti-mistake grooves, it achieves precise positioning and error prevention during the assembly process, enhances adaptability to different stator types and production processes, and meets the industry's cost reduction and performance requirements. Specifically, it includes: 1. Performance optimization: The two-parallel-two-series circuit topology adapts to the stator magnetic field requirements of a 12-slot, 10-pole motor, making the magnetic field generated by the winding current more uniform.

[0018] 2. Precise and error-proof assembly: The positioning groove cooperates with the motor stator / fixture positioning structure to achieve millimeter-level precise positioning of the PCB board, ensuring reliable connection between the solder groove and pins, and between the wiring and windings, and reducing the risk of poor contact. The anti-fool groove prevents reverse and incorrect installation from a physical structure. Whether manual or automated assembly, it can significantly improve the first-time assembly pass rate and reduce rework and production costs.

[0019] 3. Multi-scenario adaptability: The PCB board structure and solder slot layout are compatible with both pin-type and pinless stator insertion. The circuit and structural design take into account both automated (high-precision assembly) and non-automated (manual assembly) process requirements. The universal design of the positioning slots and anti-mock slots can also be adapted to assembly equipment from different manufacturers and production lines, improving production flexibility.

[0020] 4. Reduce costs and increase efficiency: Reasonable circuit layout and via design simplify the production process and reduce wiring complexity; positioning grooves and anti-mock grooves are directly formed on the board without the need for additional parts. While ensuring performance, it optimizes production costs and improves product market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the A-side of a 12-slot, 10-pole, 2-way parallel servo motor stator PCB board according to the present invention; Figure 2 This is a schematic structural diagram of the B side of a 12-slot, 10-pole, 2-way parallel servo motor stator PCB board according to the present invention; Figure 3 This is a circuit diagram of a 12-slot, 10-pole, 2-way parallel servo motor stator PCB board described in the present invention.

[0022] Graphic mark: 1-first soldering groove, 2-second soldering groove, 3-third soldering groove, 4-fourth soldering groove, 5-fifth soldering groove, 6-sixth soldering groove, 7-seventh soldering groove, 8-eighth soldering groove, 9-ninth soldering groove, 10-tenth soldering groove, 11-eleventh soldering groove, 12-twelfth soldering groove, 13-thirteenth soldering groove, 14-fourteenth soldering groove, 15-fifteenth soldering groove, 16-sixteenth soldering groove, 17-seventeenth soldering groove, 18-eighteenth soldering groove, 19-nineteenth soldering groove, 20-twentieth soldering groove, 21-twenty-first soldering groove, 22-twenty-second soldering groove, 23-twenty-third soldering groove, 24-twenty-fourth soldering groove, 25-PCB board, 26-A surface, 27-B surface, 28-A surface A circuit wiring, a second circuit wiring on surface 29-A, a third circuit wiring on surface 30-A, a fourth circuit wiring on surface 31-A, a fifth circuit wiring on surface 32-A, a sixth circuit wiring on surface 33-A, a first circuit wiring on surface 34-B, a second circuit wiring on surface 35-B, a third circuit wiring on surface 36-B, a fourth circuit wiring on surface 37-B, a fifth circuit wiring on surface 38-B, a sixth circuit wiring on surface 39-B, a seventh circuit wiring on surface 40-B, an eighth circuit wiring on surface 41-B, a ninth circuit wiring on surface 42-B, a first via, a second via, a third via, a fourth via, a fifth via, a positioning groove, and a fool-proof groove. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and examples. The described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention.

[0024] like Figure 1 and 2 As shown, this solution provides a 12-slot, 10-pole, 2-way parallel servo motor stator PCB board, including a PCB board body 25, one side of the PCB board body 25 is used as a surface A 26, and the other side is used as a surface B 27. Along the edge of the PCB board body 25, 12 solder groove units are circumferentially arranged to correspond to the 12 coil windings constituting the motor stator. Each solder groove unit includes two solder grooves, and the PCB board body 25 is provided with a total of 24 solder grooves; The A surface 26 is provided with a U pad, a V pad, a W pad, and an A surface wiring. The A surface wiring includes an A surface first circuit wiring 28, an A surface second circuit wiring 29, an A surface third circuit wiring 30, an A surface fourth circuit wiring 31, an A surface fifth circuit wiring 32, and an A surface sixth circuit wiring 33, which are used for A surface circuit connection; the U pad, V pad, and W pad are used for connecting to external three-phase lines UV and W respectively; The B-side 27 is arranged with B-side wiring, including a B-side first circuit wiring 34, a B-side second circuit wiring 35, a B-side third circuit wiring 36, a B-side fourth circuit wiring 37, a B-side fifth circuit wiring 38, a B-side sixth circuit wiring 39, a B-side seventh circuit wiring 40, a B-side eighth circuit wiring 41, and a B-side ninth circuit wiring 42, for B-side circuit connection; The PCB body 25 is provided with a first via 43, a second via 44, a third via 45, a fourth via 46, and a fifth via 47, which serve as channels for electrical connection between the A-side 26 and the B-side 27, thereby achieving cross-layer conduction between the A-side wiring and the B-side wiring. The A-side wiring, through the first via 43, the second via 44, the third via 45, the fourth via 46, and the fifth via 47, cooperates with the B-side wiring to form a complete circuit path. Through the coordination of the A-side wiring, the B-side wiring, the first via 43, the second via 44, the third via 45, the fourth via 46 and the fifth via 47, the coil windings corresponding to the 24 welding slots are connected according to the 10-pole magnetic field distribution requirements to form a two-parallel and two-series circuit structure.

[0025] This solution features a 12-slot, 10-pole, 2-way parallel servo motor stator PCB board with two parallel and two series connections. It employs a "two parallel + two series" hybrid topology, dividing the four windings per phase into two series windings, which are then connected in parallel. Through A / B-side wiring and vias, a "parallel-series" winding combination is achieved, providing a more flexible current path and balancing the loads of each winding. Current flows "parallel first, then series" between the windings, making it suitable for scenarios requiring flexible current distribution and optimized torque characteristics. Advantages include: 1. More flexible current management: The parallel structure can disperse the current and is suitable for high current conditions (such as electric vehicles and heavy-load equipment); 2. More perfect assembly error prevention: The combined design of positioning groove + anti-mistake groove is more friendly to automated production lines, greatly reducing the error rate and suitable for mass production.

[0026] The 12 solder tank units in this embodiment include solder tank unit A, solder tank unit B, solder tank unit C, solder tank unit D, solder tank unit E, solder tank unit F, solder tank unit G, solder tank unit H, solder tank unit I, solder tank unit J, solder tank unit K, and solder tank unit L. The circuit connection method is as follows: The V pad is connected to the sixth circuit wiring 39 on the B side via the fourth via 46, and the two ends of the sixth circuit wiring 39 on the B side are respectively connected to the solder slot unit A and the solder slot unit H; the solder slot unit A is connected to the solder slot unit B via the first circuit wiring 34 on the B side, and the solder slot unit B is connected to the first circuit wiring 28 on the A side; the solder slot unit H is connected to the solder slot unit G via the fifth circuit wiring 32 on the A side, and the solder slot unit G is connected to the sixth circuit wiring 33 on the A side via the seventh circuit wiring 40 on the B side through the fifth via; The W pad is connected to the solder slot unit L via the fourth circuit wiring 31 on the A side, and is also connected to the third circuit wiring 36 on the B side via the first via 43, and the third circuit wiring 36 on the B side is connected to the solder slot unit E; the solder slot unit E is connected to the solder slot unit F via the second circuit wiring 35 on the B side, and the solder slot unit F is connected to the first circuit wiring 28 on the A side; the solder slot unit L is connected to the solder slot unit K via the eighth circuit wiring 41 on the B side, and the solder slot unit K is connected to the sixth circuit wiring 33 on the A side; The U solder pad is connected to the solder slot unit I and the third circuit wiring 30 of the A side, the third circuit wiring 30 of the A side is connected to the fifth circuit wiring 38 of the B side through the third via, the fifth circuit wiring 38 of the B side is connected to the second circuit wiring 29 of the A side through the second via 44, the second circuit wiring 29 of the A side is connected to the solder slot unit D, the solder slot unit D is connected to the solder slot unit C through the fourth circuit wiring 37 of the B side, and the solder slot unit C is connected to the first circuit wiring 28 of the A side; the solder slot unit I is connected to the solder slot unit J through the ninth circuit wiring 42 of the B side, and the solder slot unit J is connected to the sixth circuit wiring 33 of the A side.

[0027] In this embodiment, the weld groove unit A includes a first weld groove 1 and a second weld groove 2, the weld groove unit B includes a third weld groove 3 and a fourth weld groove 4, the weld groove unit C includes a fifth weld groove 5 and a sixth weld groove 6, the weld groove unit D includes a seventh weld groove 7 and an eighth weld groove 8, the weld groove unit E includes a ninth weld groove 9 and a tenth weld groove 10, the weld groove unit F includes an eleventh weld groove 11 and a twelfth weld groove 12, the weld groove unit G includes a thirteenth weld groove 13 and a fourteenth weld groove 14, the weld groove unit H includes a fifteenth weld groove 15 and a sixteenth weld groove 16, the weld groove unit I includes a seventeenth weld groove 17 and an eighteenth weld groove 18, the weld groove unit J includes a nineteenth weld groove 19 and a twentieth weld groove 20, the weld groove unit K includes a twenty-first weld groove 21 and a twenty-second weld groove 22, and the weld groove unit L includes a twenty-third weld groove 23 and a twenty-fourth weld groove 24.

[0028] like Figure 3 As shown, the specific circuit structure is as follows: The V pad is connected to the sixth circuit wiring 39 on the B side through the fourth via 46, and the two ends of the sixth circuit wiring 39 on the B side are respectively connected to the first solder groove 1 and the fifteenth solder groove 15; the second solder groove 2 is connected to the fourth solder groove 4 through the first circuit wiring 34 on the B side, and the third solder groove 3 is connected to the first circuit wiring 28 on the A side; the sixteenth solder groove 16 is connected to the fourteenth solder groove 14 through the fifth circuit wiring 32 on the A side, and the thirteenth solder groove 13 is connected to the sixth circuit wiring 33 on the A side through the seventh circuit wiring 40 on the B side through the fifth via 47; The W pad is connected to the twenty-third solder groove 23 via the fourth circuit wiring 31 on the A side, and is also connected to the third circuit wiring 36 on the B side via the first via 43, and the third circuit wiring 36 on the B side is connected to the ninth solder groove 9; the tenth solder groove 10 is connected to the twelfth solder groove 12 via the second circuit wiring 35 on the B side, and the eleventh solder groove 11 is connected to the first circuit wiring 28 on the A side; the twenty-fourth solder groove 24 is connected to the twenty-second solder groove 22 via the eighth circuit wiring 41 on the B side, and the twenty-first solder groove 21 is connected to the sixth circuit wiring 33 on the A side; The U solder pad is connected to the seventeenth solder groove 17 and the third circuit wiring 30 of the A side, the third circuit wiring 30 of the A side is connected to the fifth circuit wiring 38 of the B side through the third via 45, the fifth circuit wiring 38 of the B side is connected to the second circuit wiring 29 of the A side through the second via 44, the second circuit wiring 29 of the A side is connected to the seventh solder groove 7, the eighth solder groove 8 is connected to the sixth solder groove 6 through the fourth circuit wiring 37 of the B side, and the fifth solder groove 5 is connected to the first circuit wiring 28 of the A side; the eighteenth solder groove 18 is connected to the twentieth solder groove 20 through the ninth circuit wiring 42 of the B side, and the nineteenth solder groove 19 is connected to the sixth circuit wiring 33 of the A side.

[0029] This solution provides a 12-slot, 10-pole, two-parallel, two-string PCB board with the following structure and connection features: Basic adaption structure: The PCB board is designed to fit the stator of a 12-slot, 10-pole motor. Sides A and B are used for circuit wiring. The outer edge is surrounded by 24 solder slots, corresponding to 12 coil windings (numbered A-L). Each winding is equipped with two solder slots for coil winding pin insertion.

[0030] Wiring of side A and side B: Side A is provided with circuit wiring from the first circuit wiring 28 of side A to the sixth circuit wiring 33 of side A, which is responsible for connecting part of the coil winding and arranging the UVW pads. The UVW pads are used for three-phase line wiring, among which the W pad is connected to the twenty-third solder groove 23 through the fourth circuit wiring 31 of side A, and the U pad is connected to the eighteenth solder groove 18.

[0031] The B side is provided with circuit wirings from the B side first circuit wiring 34 to the B side ninth circuit wiring 42, which cooperate with the A side wiring to construct two parallel and two serial circuit paths.

[0032] Via connection: The first via 43 to the fifth via 47 are provided as cross-layer electrical connection channels between the A and B surfaces to achieve circuit conduction of the two-layer wiring and form a complete two-parallel and two-serial circuit.

[0033] Two-in-parallel, two-in-series circuit logic: Through the wiring and vias on the A and B sides, the coil windings corresponding to the 24 solder slots are connected in a two-in-parallel, two-in-series arrangement. For example, the W pad is connected to the third circuit wiring 36 on the B side and the ninth solder slot 9 via the fourth circuit wiring 31 on the A side and the first via 43; the V pad is connected to the sixth circuit wiring 39 on the B side and the ninth solder slot 9 via the fourth via 46. Multiple winding groups are connected in parallel and in series to adapt to the magnetic field period and winding distribution of a 12-slot, 10-pole motor, ensuring proper current distribution and magnetic field stability.

[0034] Motor performance tests verified that the two-parallel-two-series circuit in a 12-slot, 10-pole motor can meet the motor's high-performance requirements. Actual assembly tests also proved that the PCB board can be adapted to automated plug-in, welding equipment, and manual assembly scenarios, improving production compatibility.

[0035] As an optimization of this embodiment, the PCB board body 25 uses FR-4 epoxy glass cloth laminate as the substrate material.

[0036] Specifically, the PCB body 25 is punched or CNC-machined based on the size of a 12-slot, 10-pole motor stator using a high-precision die, and the matching error is controlled within a reasonable range (such as ±0.1mm) to ensure accurate insertion with the outer side of the motor stator.

[0037] For pin stators, the inner diameter of the solder groove matches the pin diameter (gap ±0.05mm); for pinless stators, the winding leads are connected by soldering, which is compatible with both stator types.

[0038] In this embodiment, the first to ninth vias are mechanically drilled, and the hole diameter is adapted to the wiring connection requirements of the A and B sides (such as 0.3mm). The electroplated copper layer in the hole ensures the stability of cross-layer conduction.

[0039] In this embodiment, the A-side wiring and the B-side wiring both use electrolytic copper foil as the conductive material.

[0040] Specifically, the wiring on sides A and B is etched, with copper foil trace width and spacing designed to meet specific requirements (e.g., 0.3mm width, 0.2mm spacing) to ensure current carrying and insulation performance. The UVW pads and traces on side A are integrated with the etching process, and the surface is treated with tin spraying to enhance soldering reliability.

[0041] To further improve the reliability and service life of the wiring, solder resist ink, such as acrylic resin solder resist ink, is coated on the surface of the A-side wiring and the B-side wiring. This material has functions such as insulation, anti-oxidation, and anti-solder bridging, protecting the A-side and B-side wiring from environmental corrosion. At the same time, it standardizes the welding area, improves the accuracy and efficiency of the automated welding process, and adapts to the design goals of this solution that take into account both automated and non-automated processes.

[0042] like Figure 1 and 2 As shown, in this embodiment, a plurality of positioning grooves 48 and / or a plurality of fool-proof grooves 49 are provided on the PCB board 25 .

[0043] Specifically, adding positioning grooves 48 and foolproof grooves 49 to the edge of the PCB board 25 can significantly improve assembly efficiency and accuracy and reduce the risk of manual error. Positioning slots: These slots are located along the edge of the PCB, measuring 2mm x 3mm and 1.5mm deep. Their inner wall roughness is controlled to Ra ≤ 1.6μm. They mate with the positioning protrusions / pins on the motor stator or assembly fixture, leveraging form fit and friction to precisely position the PCB in the X and Y directions. Deviations are controlled within ±0.05mm, ensuring accurate alignment between the solder slot and the stator pins.

[0044] The anti-aliasing slot is designed in combination with the positioning slot. Only when the PCB is installed in the correct orientation does the slot fully mate with the motor stator or fixture's anti-aliasing block / structure. If the orientation is incorrect, mechanical interference will occur, preventing assembly. This physically eliminates the risk of reverse or incorrect installation. The slot edges feature a rounded transition (R=0.3mm) to prevent stress concentration and PCB cracking, improving structural reliability. Formed directly into the board through a stamping / etching process, this eliminates the need for additional parts, reducing costs and increasing efficiency.

[0045] The above description is only for explaining the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, any modifications, equivalent substitutions, 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 12-slot, 10-pole, 2-way parallel servo motor stator PCB board, comprising a PCB board body (25), one side of the PCB board body (25) serving as surface A (26), and the other side serving as surface B (27), characterized in that: Twelve soldering slot units are circumferentially arranged along the edge of the PCB body (25), corresponding to the twelve coil windings constituting the motor stator, each soldering slot unit comprising two soldering slots, and the PCB body (25) is provided with a total of 24 soldering slots; The A surface (26) is provided with a U pad, a V pad, a W pad and an A surface wiring, wherein the A surface wiring includes an A surface first circuit wiring (28), an A surface second circuit wiring (29), an A surface third circuit wiring (30), an A surface fourth circuit wiring (31), an A surface fifth circuit wiring (32) and an A surface sixth circuit wiring (33), which are used for A surface circuit connection; the U pad, the V pad and the W pad are used for connecting to external three-phase lines UV and W respectively; The B side (27) is provided with B side wiring, including a B side first circuit wiring (34), a B side second circuit wiring (35), a B side third circuit wiring (36), a B side fourth circuit wiring (37), a B side fifth circuit wiring (38), a B side sixth circuit wiring (39), a B side seventh circuit wiring (40), a B side eighth circuit wiring (41) and a B side ninth circuit wiring (42), for B side circuit connection; The PCB body (25) is provided with a first via hole (43), a second via hole (44), a third via hole (45), a fourth via hole (46) and a fifth via hole (47), serving as channels for electrical connection between the A surface (26) and the B surface (27); By cooperating with the A-side wiring, the B-side wiring, the first via hole (43), the second via hole (44), the third via hole (45), the fourth via hole (46) and the fifth via hole (47), the coil windings corresponding to the 24 welding slots are connected according to the 10-pole magnetic field distribution requirement to form a two-parallel two-series circuit structure.

2. The 12-slot, 10-pole, 2-way parallel servo motor stator PCB board according to claim 1, characterized in that: The 12 welding tank units include: welding tank unit A, welding tank unit B, welding tank unit C, welding tank unit D, welding tank unit E, welding tank unit F, welding tank unit G, welding tank unit H, welding tank unit I, welding tank unit J, welding tank unit K and welding tank unit L.

3. The 12-slot, 10-pole, 2-way parallel servo motor stator PCB board according to claim 2, characterized in that: The V pad is connected to the sixth circuit wiring (39) of the B side via the fourth via (46), and the two ends of the sixth circuit wiring (39) of the B side are respectively connected to the solder slot unit A and the solder slot unit H; the solder slot unit A is connected to the solder slot unit B via the first circuit wiring (34) of the B side, and the solder slot unit B is connected to the first circuit wiring (28) of the A side; the solder slot unit H is connected to the solder slot unit G via the fifth circuit wiring (32) of the A side, and the solder slot unit G is connected to the sixth circuit wiring (33) of the A side via the seventh circuit wiring (40) of the B side via the fifth via; The W pad is connected to the solder slot unit L via the fourth circuit wiring (31) on the A side, and the W pad is also connected to the third circuit wiring (36) on the B side via the first via (43), and the third circuit wiring (36) on the B side is connected to the solder slot unit E; the solder slot unit E is connected to the solder slot unit F via the second circuit wiring (35) on the B side, and the solder slot unit F is connected to the first circuit wiring (28) on the A side; the solder slot unit L is connected to the solder slot unit K via the eighth circuit wiring (41) on the B side, and the solder slot unit K is connected to the sixth circuit wiring (33) on the A side; The U solder pad is connected to the solder slot unit I and the third circuit wiring (30) on the A side, the third circuit wiring (30) on the A side is connected to the fifth circuit wiring (38) on the B side through the third via, the fifth circuit wiring (38) on the B side is connected to the second circuit wiring (29) on the A side through the second via (44), the second circuit wiring (29) on the A side is connected to the solder slot unit D, the solder slot unit D is connected to the solder slot unit C through the fourth circuit wiring (37) on the B side, and the solder slot unit C is connected to the first circuit wiring (28) on the A side; the solder slot unit I is connected to the solder slot unit J through the ninth circuit wiring (42) on the B side, and the solder slot unit J is connected to the sixth circuit wiring (33) on the A side.

4. The 12-slot, 10-pole, 2-way parallel servo motor stator PCB board according to claim 3, characterized in that: The welding groove unit A includes a first welding groove (1) and a second welding groove (2), the welding groove unit B includes a third welding groove (3) and a fourth welding groove (4), the welding groove unit C includes a fifth welding groove (5) and a sixth welding groove (6), the welding groove unit D includes a seventh welding groove (7) and an eighth welding groove (8), the welding groove unit E includes a ninth welding groove (9) and a tenth welding groove (10), the welding groove unit F includes an eleventh welding groove (11) and a twelfth welding groove (12), and the welding groove unit G includes a tenth welding groove (13). The third welding groove (13) and the fourteenth welding groove (14), the welding groove unit H includes the fifteenth welding groove (15) and the sixteenth welding groove (16), the welding groove unit I includes the seventeenth welding groove (17) and the eighteenth welding groove (18), the welding groove unit J includes the nineteenth welding groove (19) and the twentieth welding groove (20), the welding groove unit K includes the twenty-first welding groove (21) and the twenty-second welding groove (22), and the welding groove unit L includes the twenty-third welding groove (23) and the twenty-fourth welding groove (24).

5. The 12-slot, 10-pole, 2-way parallel servo motor stator PCB board according to claim 4, characterized in that: The V solder pad is connected to the sixth circuit wiring (39) on the B side via the fourth via (46), and the two ends of the sixth circuit wiring (39) on the B side are respectively connected to the first solder groove (1) and the fifteenth solder groove (15); the second solder groove (2) is connected to the fourth solder groove (4) via the first circuit wiring (34) on the B side, and the third solder groove (3) is connected to the first circuit wiring (28) on the A side; the sixteenth solder groove (16) is connected to the fourteenth solder groove (14) via the fifth circuit wiring (32) on the A side, and the thirteenth solder groove (13) is connected to the sixth circuit wiring (33) on the A side via the seventh circuit wiring (40) on the B side via the fifth via (47); The W solder pad is connected to the twenty-third solder groove (23) via the fourth circuit wiring (31) on the A side, and the W solder pad is also connected to the third circuit wiring (36) on the B side via the first via (43), and the third circuit wiring (36) on the B side is connected to the ninth solder groove (9); the tenth solder groove (10) is connected to the twelfth solder groove (12) via the second circuit wiring (35) on the B side, and the eleventh solder groove (11) is connected to the first circuit wiring (28) on the A side; the twenty-fourth solder groove (24) is connected to the twenty-second solder groove (22) via the eighth circuit wiring (41) on the B side, and the twenty-first solder groove (21) is connected to the sixth circuit wiring (33) on the A side; The U solder pad is connected to the seventeenth solder groove (17) and the third circuit wiring (30) of the A side, the third circuit wiring (30) of the A side is connected to the fifth circuit wiring (38) of the B side through the third via (45), the fifth circuit wiring (38) of the B side is connected to the second circuit wiring (29) of the A side through the second via (44), the second circuit wiring (29) of the A side is connected to the seventh solder groove (7), the eighth solder groove (8) is connected to the sixth solder groove (6) through the fourth circuit wiring (37) of the B side, and the fifth solder groove (5) is connected to the first circuit wiring (28) of the A side; the eighteenth solder groove (18) is connected to the twentieth solder groove (20) through the ninth circuit wiring (42) of the B side, and the nineteenth solder groove (19) is connected to the sixth circuit wiring (33) of the A side.

6. The 12-slot, 10-pole, 2-way parallel servo motor stator PCB board according to claim 1, characterized in that: The PCB board (25) uses FR-4 epoxy glass cloth laminate as a substrate material.

7. The 12-slot, 10-pole, 2-way parallel servo motor stator PCB board according to claim 1, characterized in that: The A-side wiring and the B-side wiring both use electrolytic copper foil as a conductive material.

8. The 12-slot, 10-pole, 2-way parallel servo motor stator PCB board according to claim 7, characterized in that: Solder resist ink is applied on the surfaces of the A-side wiring and the B-side wiring.

9. The 12-slot, 10-pole, 2-way parallel servo motor stator PCB board according to claim 1, characterized in that: A plurality of positioning grooves (48) are provided on the PCB body (25).

10. A 12-slot, 10-pole, 2-way parallel servo motor stator PCB board according to claim 1 or 9, characterized in that: A plurality of anti-mistake grooves (49) are provided on the PCB board (25).

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