12-slot 10-pole 2-path parallel servo motor stator PCB

Abstract

The utility model relates to servo motor stator circuit board technical field, specifically is a kind of 12 slot 10 pole 2 road parallel servo motor stator PCB, including PCB board body and A / B surface, along PCB board body edge, it is peripherally provided with 12 soldering groove units, each soldering groove unit includes 2 soldering grooves, and 24 soldering grooves are provided in all;A surface is arranged with U bonding pad, V bonding pad, W bonding pad and A surface wiring, A surface wiring includes A surface first circuit wiring to A surface sixth circuit wiring;B surface is arranged with B surface wiring, including B surface first circuit wiring to B surface ninth circuit wiring;First via hole to fifth via hole is opened on PCB board body, as the passage of electric connection between A surface and B surface;By the cooperation of A surface wiring, B surface wiring, first via hole to fifth via hole, 24 soldering groove corresponding coil winding is connected according to 10 pole magnetic field distribution demand, forms two parallel two series circuit structure.Circuit is connected as two parallel two series topology, and motor stator magnetic field distribution is adapted.

Description

Technical Field

[0001] This utility model relates to the field of servo motor stator circuit board technology, and in particular to a 12-slot, 10-pole, 2-way parallel servo motor stator PCB board. Background Technology

[0002] In the field of servo motor technology, with the continuous advancement of automated production, the application technology of PCB boards in servo motors has become mature. As a core drive component in industrial automation and other scenarios, servo motors with power ranges of 400W-3000W occupy a large proportion of the market. These motors generally adopt a 12-slot, 10-pole design.

[0003] In traditional technologies, PCBs adapted to 12-slot, 10-pole motors of this power range typically employ a four-layer circuit design. Implementing four layers of circuitry on a single PCB requires three layers of insulation, resulting in high manufacturing costs. Furthermore, with the market's increasing demand for cost reduction in servo motors, existing PCB solutions are struggling to meet competitive cost requirements and urgently need optimization and improvement.

[0004] On the other hand, servo motor production faces diverse application scenarios, requiring compatibility with both pin-type and pinless stators, as well as accommodating 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 application scenarios.

[0005] Therefore, in order to enhance product market competitiveness and meet the cost reduction and diversified application needs of the servo motor industry, 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 components can be reduced while ensuring motor performance, and at the same time, it can be adapted to different motor stator types and manufacturing processes. Utility Model Content

[0006] The purpose of this utility model is to overcome the problems of the prior art and provide a 12-slot, 10-pole, 2-channel parallel servo motor stator PCB board to solve the technical problems of the traditional four-layer circuit + three-layer insulation scheme, which has a large number of circuit layers and insulation layers, high material cost and difficult production process, as well as the inability to be compatible with pin-type stator and pinless stator connection.

[0007] The above objectives are achieved through the following technical solutions:

[0008] A PCB board for a 12-slot, 10-pole, 2-channel parallel servo motor stator includes a PCB board body. One side of the PCB board body is designated as side A, and the other side as side B. Twelve solder slot units are circumferentially arranged along the edge of the PCB board body to correspond to the 12 coil windings constituting the motor stator. Each solder slot unit includes two solder slots, and the PCB board body has a total of 24 solder slots. Side A is provided with U-pads, V-pads, W-pads, and A-side wiring. The A-side wiring includes A-side first circuit wiring, A-side second circuit wiring, A-side third circuit wiring, A-side fourth circuit wiring, A-side fifth circuit wiring, and A-side sixth circuit wiring for A-side circuit connections. The U-pads, V-pads, and W-pads are respectively used for connection to external three-phase lines UVW. Wiring; the B-side is provided 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, for B-side circuit connection; the PCB board is provided with first via, second via, third via, fourth via, and fifth via, 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, second via, third via, fourth via, and fifth via, the coil windings corresponding to the 24 solder slots are connected according to the 10-pole magnetic field distribution requirement to form a two-parallel and two-series circuit structure.

[0009] Furthermore, the 12 weld pool units include: weld pool unit A, weld pool unit B, weld pool unit C, weld pool unit D, weld pool unit E, weld pool unit F, weld pool unit G, weld pool unit H, weld pool unit I, weld pool unit J, weld pool unit K and weld pool unit L.

[0010] Further, the V pad is connected to the sixth circuit trace on the B side via the fourth via, and the two ends of the sixth circuit trace on the B side are connected to the solder joint unit A and the solder joint unit H, respectively; the solder joint unit A is connected to the solder joint unit B via the first circuit trace on the B side, and the solder joint unit B is connected to the first circuit trace on the A side; the solder joint unit H is connected to the solder joint unit G via the fifth circuit trace on the A side, and the solder joint unit G is connected to the sixth circuit trace on the A side via the fifth via through the seventh circuit trace on the B side; the W pad is connected to the solder joint unit L via the fourth circuit trace on the A side, and the W pad is also connected to the third circuit trace on the B side via the first via, and the third circuit trace on the B side is connected to the solder joint unit E; the solder joint unit E is connected to the solder joint unit L via the second circuit trace on the B side. Connection F: The solder pad F is connected to the first circuit wiring on side A; Solder pad L is connected to solder pad K through the eighth circuit wiring on side B, and solder pad K is connected to the sixth circuit wiring on side A; Solder pad U is connected to solder pad I and the third circuit wiring on side A, the third circuit wiring on side A is connected to the fifth circuit wiring on side B through the third via, the fifth circuit wiring on side B is connected to the second circuit wiring on side A through the second via, the second circuit wiring on side A is connected to solder pad D, solder pad D is connected to solder pad C through the fourth circuit wiring on side B, and solder pad C is connected to the first circuit wiring on side A; Solder pad I is connected to solder pad J through the ninth circuit wiring on side B, and solder pad J is connected to the sixth circuit wiring on side A.

[0011] Further, weld pool unit A includes a first weld pool and a second weld pool; weld pool unit B includes a third weld pool and a fourth weld pool; weld pool unit C includes a fifth weld pool and a sixth weld pool; weld pool unit D includes a seventh weld pool and an eighth weld pool; weld pool unit E includes a ninth weld pool and a tenth weld pool; weld pool unit F includes an eleventh weld pool and a twelfth weld pool; weld pool unit G includes a thirteenth weld pool and a fourteenth weld pool; weld pool unit H includes a fifteenth weld pool and a sixteenth weld pool; weld pool unit I includes a seventeenth weld pool and an eighteenth weld pool; weld pool unit J includes a nineteenth weld pool and a twentieth weld pool; weld pool unit K includes a twenty-first weld pool and a twenty-second weld pool; and weld pool unit L includes a twenty-third weld pool and a twenty-fourth weld pool.

[0012] Further, the V pad is connected to the sixth circuit trace on side B via the fourth via, and both ends of the sixth circuit trace on side B are connected to the first solder pad and the fifteenth solder pad, respectively; the second solder pad is connected to the fourth solder pad via the first circuit trace on side B, and the third solder pad is connected to the first circuit trace on side A; the sixteenth solder pad is connected to the fourteenth solder pad via the fifth circuit trace on side A, and the thirteenth solder pad is connected to the sixth circuit trace on side A via the fifth via through the seventh circuit trace on side B; the W pad is connected to the twenty-third solder pad via the fourth circuit trace on side A, and the W pad is also connected to the third circuit trace on side B via the first via, which is connected to the ninth solder pad; the tenth solder pad is connected to the twelfth solder pad via the second circuit trace on side B. The eleventh solder pad is connected to the first circuit wiring on side A; the twenty-fourth solder pad is connected to the twenty-second solder pad via the eighth circuit wiring on side B, and the twenty-first solder pad is connected to the sixth circuit wiring on side A; the U-pad is connected to the seventeenth solder pad and the third circuit wiring on side A, the third circuit wiring on side A is connected to the fifth circuit wiring on side B via the third via, the fifth circuit wiring on side B is connected to the second circuit wiring on side A via the second via, the second circuit wiring on side A is connected to the seventh solder pad, the eighth solder pad is connected to the sixth solder pad via the fourth circuit wiring on side B, and the fifth solder pad is connected to the first circuit wiring on side A; the eighteenth solder pad is connected to the twentyth solder pad via the ninth circuit wiring on side B, and the nineteenth solder pad is connected to the sixth circuit wiring on side A.

[0013] Furthermore, the PCB board body uses FR-4 epoxy glass cloth laminate as the substrate material.

[0014] Furthermore, both the wiring on side A and the wiring on side B use electrolytic copper foil as the conductive material.

[0015] Furthermore, solder resist ink is coated on the surfaces of the wiring on side A and the wiring on side B.

[0016] Furthermore, the PCB board is provided with several positioning slots.

[0017] Furthermore, the PCB board is provided with several anti-foolproof grooves.

[0018] This utility model provides a 12-slot, 10-pole, 2-channel parallel servo motor stator PCB board. Through optimized circuit connection in a two-parallel, two-series topology, it adapts to the magnetic field distribution of a 12-slot, 10-pole motor stator. Utilizing edge positioning slots and error-proofing slots, it achieves precise positioning and error prevention during assembly, enhancing adaptability to different stator types and manufacturing processes, and meeting industry demands for cost reduction and performance. Specifically, it includes:

[0019] 1. Performance optimization: The two parallel and two series circuit topology is adapted to the stator magnetic field requirements of a 12-slot 10-pole motor, making the magnetic field generated by the winding current more uniform.

[0020] 2. Precise assembly and error prevention: The positioning slot works in conjunction with the positioning structure of the motor stator / fixture to achieve millimeter-level precise positioning of the PCB board, ensuring reliable connection between the solder groove and the pin, and between the wiring and the winding, and reducing the risk of poor contact; the error prevention slot prevents reverse or incorrect installation from the physical structure. Whether it is manual or automated assembly, it can significantly improve the first-pass yield and reduce rework and production costs.

[0021] 3. Multi-scenario adaptation: The PCB board structure and solder groove layout are compatible with both pin-type and pinless stator connections; the circuit and structural design takes into account the needs of automated (high-precision assembly) and non-automated (manual assembly) processes; the universal design of positioning slots and error-proof slots can also be adapted to assembly equipment from different manufacturers and production lines, improving production flexibility.

[0022] 4. Cost reduction and efficiency improvement: Reasonable circuit layout and via design simplify the production process and reduce wiring complexity; positioning slots and error-proof slots are directly formed on the board without additional parts, optimizing production costs and enhancing product market competitiveness while ensuring performance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the A-side structure of the stator PCB board of a 12-slot, 10-pole, 2-channel parallel servo motor according to the present invention;

[0024] Figure 2 This is a schematic diagram of the B-side structure of a stator PCB board for a 12-slot, 10-pole, 2-way parallel servo motor according to the present invention.

[0025] Figure 3 This is a circuit diagram of a 12-slot, 10-pole, 2-channel parallel servo motor stator PCB board according to the present invention.

[0026] Illustration markings:

[0027] 1-First solder pad, 2-Second solder pad, 3-Third solder pad, 4-Fourth solder pad, 5-Fifth solder pad, 6-Sixth solder pad, 7-Seventh solder pad, 8-Eighth solder pad, 9-Ninth solder pad, 10-Tenth solder pad, 11-Eleventh solder pad, 12-Twelfth solder pad, 13-Thirteenth solder pad, 14-Fourteenth solder pad, 15-Fifteenth solder pad, 16-Sixteenth solder pad, 17-Seventeenth solder pad, 18-Eighteenth solder pad, 19-Nineteenth solder pad, 20-Twentieth solder pad, 21-Twenty-first solder pad, 22-Twenty-second solder pad, 23-Twenty-third solder pad, 24-Twenty-fourth solder pad, 25-PCB board body, 26-Side A, 27-Side B, 28-Side A (first solder pad) 1. Circuit routing, 29-A side second circuit routing, 30-A side third circuit routing, 31-A side fourth circuit routing, 32-A side fifth circuit routing, 33-A side sixth circuit routing, 34-B side first circuit routing, 35-B side second circuit routing, 36-B side third circuit routing, 37-B side fourth circuit routing, 38-B side fifth circuit routing, 39-B side sixth circuit routing, 40-B side seventh circuit routing, 41-B side eighth circuit routing, 42-B side ninth circuit routing, 43-first via, 44-second via, 45-third via, 46-fourth via, 47-fifth via, 48-positioning slot, 49-foolproof slot. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] 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 designated as surface A 26, and the other side is designated as surface B 27. Along the edge of the PCB board body 25, 12 soldering slot units are arranged circumferentially to correspond to the 12 coil windings constituting the motor stator. Each soldering slot unit includes 2 soldering slots, and the PCB board body 25 is provided with a total of 24 soldering slots.

[0030] The A-side 26 is provided with U-pads, V-pads, W-pads, and A-side wiring. The A-side wiring includes A-side first circuit wiring 28, A-side second circuit wiring 29, A-side third circuit wiring 30, A-side fourth circuit wiring 31, A-side fifth circuit wiring 32, and A-side sixth circuit wiring 33, which are used for A-side circuit connections. The U-pads, V-pads, and W-pads are respectively used for wiring with external three-phase lines UVW.

[0031] The B-side 27 is provided with B-side wiring, including B-side first circuit wiring 34, B-side second circuit wiring 35, B-side third circuit wiring 36, B-side fourth circuit wiring 37, B-side fifth circuit wiring 38, B-side sixth circuit wiring 39, B-side seventh circuit wiring 40, B-side eighth circuit wiring 41 and B-side ninth circuit wiring 42, for B-side circuit connection.

[0032] The PCB board 25 has 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, enabling 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, works in conjunction with the B-side wiring to construct a complete circuit path;

[0033] By cooperating with the wiring on side A, the wiring on side B, 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 solder slots are connected according to the 10-pole magnetic field distribution requirement to form a two-parallel and two-series circuit structure.

[0034] This solution presents a stator PCB board for a 12-slot, 10-pole, 2-channel parallel servo motor, employing a hybrid topology of two parallel and two series connections. The four windings of one phase are divided into two sets of series windings, which are then connected in parallel. Through A / B surface routing and via connections, the "parallel-series" combination of windings is achieved, resulting in more flexible current paths and balanced loads on each winding. The current flows "parallel first, then series" between windings, making it suitable for scenarios requiring flexible current distribution and optimized torque characteristics. Advantages include:

[0035] 1. More flexible current management: The parallel structure can distribute the current, making it suitable for high-current operating conditions (such as electric vehicles and heavy-duty equipment).

[0036] 2. Improved assembly error prevention: The combination design of positioning slot and error-proof slot is more friendly to automated production lines, greatly reduces the misassembly rate, and is suitable for mass production.

[0037] The 12 weld pool units in this embodiment include: weld pool unit A, weld pool unit B, weld pool unit C, weld pool unit D, weld pool unit E, weld pool unit F, weld pool unit G, weld pool unit H, weld pool unit I, weld pool unit J, weld pool unit K, and weld pool unit L. The circuit connection method is as follows:

[0038] The V pad is connected to the sixth circuit trace 39 on the B side via the fourth via 46. The two ends of the sixth circuit trace 39 on the B side are connected to the solder pool unit A and the solder pool unit H, respectively. The solder pool unit A is connected to the solder pool unit B via the first circuit trace 34 on the B side. The solder pool unit B is connected to the first circuit trace 28 on the A side. The solder pool unit H is connected to the solder pool unit G via the fifth circuit trace 32 on the A side. The solder pool unit G is connected to the sixth circuit trace 33 on the A side via the fifth via 40 on the B side.

[0039] The W pad is connected to the solder pad unit L via the fourth circuit wiring 31 on side A. The W pad is also connected to the third circuit wiring 36 on side B via the first via 43. The third circuit wiring 36 on side B is connected to the solder pad unit E. The solder pad unit E is connected to the solder pad unit F via the second circuit wiring 35 on side B. The solder pad unit F is connected to the first circuit wiring 28 on side A. The solder pad unit L is connected to the solder pad unit K via the eighth circuit wiring 41 on side B. The solder pad unit K is connected to the sixth circuit wiring 33 on side A.

[0040] The U-pad is connected to the solder pool unit I and the third circuit wiring 30 on side A. The third circuit wiring 30 on side A is connected to the fifth circuit wiring 38 on side B via the third via. The fifth circuit wiring 38 on side B is connected to the second circuit wiring 29 on side A via the second via 44. The second circuit wiring 29 on side A is connected to the solder pool unit D. The solder pool unit D is connected to the solder pool unit C via the fourth circuit wiring 37 on side B. The solder pool unit C is connected to the first circuit wiring 28 on side A. The solder pool unit I is connected to the solder pool unit J via the ninth circuit wiring 42 on side B. The solder pool unit J is connected to the sixth circuit wiring 33 on side A.

[0041] In this embodiment, weld pool unit A includes a first weld pool 1 and a second weld pool 2; weld pool unit B includes a third weld pool 3 and a fourth weld pool 4; weld pool unit C includes a fifth weld pool 5 and a sixth weld pool 6; weld pool unit D includes a seventh weld pool 7 and an eighth weld pool 8; weld pool unit E includes a ninth weld pool 9 and a tenth weld pool 10; weld pool unit F includes an eleventh weld pool 11 and a twelfth weld pool 12; weld pool unit G includes a thirteenth weld pool 13 and a fourteenth weld pool 14; weld pool unit H includes a fifteenth weld pool 15 and a sixteenth weld pool 16; weld pool unit I includes a seventeenth weld pool 17 and an eighteenth weld pool 18; weld pool unit J includes a nineteenth weld pool 19 and a twentieth weld pool 20; weld pool unit K includes a twenty-first weld pool 21 and a twenty-second weld pool 22; and weld pool unit L includes a twenty-third weld pool 23 and a twenty-fourth weld pool 24.

[0042] like Figure 3 As shown, the specific circuit structure is as follows:

[0043] The V pad is connected to the sixth circuit trace 39 on the B side via the fourth via 46. The two ends of the sixth circuit trace 39 on the B side are connected to the first solder pad 1 and the fifteenth solder pad 15, respectively. The second solder pad 2 is connected to the fourth solder pad 4 via the first circuit trace 34 on the B side. The third solder pad 3 is connected to the first circuit trace 28 on the A side. The sixteenth solder pad 16 is connected to the fourteenth solder pad 14 via the fifth circuit trace 32 on the A side. The thirteenth solder pad 13 is connected to the sixth circuit trace 33 on the A side via the seventh circuit trace 40 on the B side and the fifth via 47.

[0044] The W pad is connected to the twenty-third solder pad 23 via the fourth circuit wiring 31 on side A. The W pad is also connected to the third circuit wiring 36 on side B via the first via 43. The third circuit wiring 36 on side B is connected to the ninth solder pad 9. The tenth solder pad 10 is connected to the twelfth solder pad 12 via the second circuit wiring 35 on side B. The eleventh solder pad 11 is connected to the first circuit wiring 28 on side A. The twenty-fourth solder pad 24 is connected to the twenty-second solder pad 22 via the eighth circuit wiring 41 on side B. The twenty-first solder pad 21 is connected to the sixth circuit wiring 33 on side A.

[0045] The U-pad is connected to the seventeenth solder pad 17 and the third circuit wiring 30 on side A. The third circuit wiring 30 on side A is connected to the fifth circuit wiring 38 on side B via the third via 45. The fifth circuit wiring 38 on side B is connected to the second circuit wiring 29 on side A via the second via 44. The second circuit wiring 29 on side A is connected to the seventh solder pad 7. The eighth solder pad 8 is connected to the sixth solder pad 6 via the fourth circuit wiring 37 on side B. The fifth solder pad 5 is connected to the first circuit wiring 28 on side A. The eighteenth solder pad 18 is connected to the twentieth solder pad 20 via the ninth circuit wiring 42 on side B. The nineteenth solder pad 19 is connected to the sixth circuit wiring 33 on side A.

[0046] This solution provides a 12-slot, 10-pole, two-parallel, two-series PCB board with the following structural and connection features:

[0047] Basic adapter structure: The PCB board is shaped to fit a 12-slot 10-pole motor stator. The circuit wiring is laid out on the A side and the B side respectively. There are 24 solder slots around the outer edge, corresponding to 12 coil windings (A-L serial numbers). Each winding is equipped with 2 solder slots for coil winding pin insertion.

[0048] A-side and B-side wiring: A-side has circuit wiring from the first circuit wiring 28 to the sixth circuit wiring 33, which undertakes part of the coil winding connection and UVW pad arrangement function. The UVW pads are used for three-phase line connection, where the W pad is connected to the twenty-third solder groove 23 via the fourth circuit wiring 31 on A-side, and the U pad is connected to the eighteenth solder groove 18.

[0049] Side B has circuit wiring from the first circuit wiring 34 to the ninth circuit wiring 42 on side B, which works in conjunction with the wiring on side A to construct two parallel and two series circuit paths.

[0050] Via connection: The first via 43 to the fifth via 47 are set as the cross-layer electrical connection channel between surfaces A and B, so as to realize the circuit conduction of the wiring of the two layers and form a complete two parallel and two series circuit.

[0051] Two-parallel, two-series circuit logic: Through wiring on sides A and B and via connections, the coil windings corresponding to the 24 solder slots are connected in a two-parallel, two-series configuration. For example, pad W is connected to wiring on side B (fourth circuit 31, first via 43) and to wiring on side B (third circuit 36, ninth solder slot 9); pad V is connected to wiring on side B (sixth circuit 39, ninth solder slot 9) and to wiring on side B (fourth via 46). The combination of parallel and series windings adapts to the magnetic field cycle and winding distribution of a 12-slot, 10-pole motor, ensuring reasonable current distribution and magnetic field stability.

[0052] Motor performance testing verified that the two parallel and two series circuits in a 12-slot 10-pole motor can meet the high-performance requirements of the motor. At the same time, actual assembly testing proved that the PCB board can be adapted to automated plug-in, welding equipment, and manual assembly scenarios, improving production compatibility.

[0053] As an optimization of this embodiment, the PCB board 25 uses FR-4 epoxy glass cloth laminate as the substrate material.

[0054] Specifically, the PCB board 25 is designed according to the dimensions of the 12-slot 10-pole motor stator. The PCB board shape is made by high-precision die stamping or CNC machining, and the fitting error is controlled within a reasonable range (such as ±0.1mm) to ensure accurate insertion with the outside of the motor stator.

[0055] For stators with pins, the inner diameter of the solder groove matches the diameter of the pins (gap ±0.05mm); for stators without pins, the winding leads are connected by soldering, making them compatible with both stator types.

[0056] In this embodiment, the first to ninth vias are mechanically drilled, with the hole diameter adapted to the wiring connection requirements of surfaces A and B (e.g., 0.3mm). The copper plating layer inside the hole ensures the stability of cross-layer conductivity.

[0057] In this embodiment, both the wiring on side A and the wiring on side B use electrolytic copper foil as the conductive material.

[0058] Specifically, the wiring on both sides A and B employs an etching process, with the copper foil line width and spacing designed as needed (e.g., 0.3mm width, 0.2mm spacing) to ensure current carrying capacity and insulation performance. The UVW pads on side A are integrated with the wiring through etching, and the surface is treated with tin plating to improve soldering reliability.

[0059] 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 surfaces of the wiring on side A and side B. This material has functions such as insulation, anti-oxidation, and anti-solder bridging, protecting the wiring on side A and side B from environmental corrosion, while standardizing the soldering area, improving the accuracy and efficiency of automated soldering processes, and adapting to the design goal of this solution that takes into account both automated and non-automated processes.

[0060] like Figure 1 and 2 As shown, in this embodiment, the PCB board 25 is provided with a plurality of positioning grooves 48 and / or a plurality of anti-fooling grooves 49.

[0061] Specifically, adding positioning slots 48 and anti-misoperation slots 49 to the edge of the PCB board 25 can significantly improve assembly efficiency and accuracy, and reduce the risk of human error. Among these:

[0062] Positioning groove: This groove is set along the edge of the PCB board, with an opening size of 2mm × 3mm and a depth of 1.5mm. Its inner wall roughness is controlled to Ra≤1.6μm. It mates with the positioning protrusions / pins of the motor stator or assembly fixture, utilizing shape fit and friction to achieve precise positioning of the PCB board in the X and Y directions. The deviation can be controlled within ±0.05mm, ensuring the alignment accuracy of the solder groove and stator pins.

[0063] Anti-misalignment slot: Arranged in combination with positioning slot. The anti-misalignment slot can perfectly fit the anti-misalignment block / structure of the motor stator or fixture only when the PCB board is installed in the correct orientation; if the orientation is incorrect, mechanical interference will occur, preventing assembly and eliminating the risk of reverse or incorrect installation from a physical structural perspective. The slot edge uses a rounded corner (R=0.3mm) transition to avoid stress concentration that could cause PCB board cracking, improving structural reliability. Furthermore, it is formed directly on the board through stamping / etching processes, eliminating the need for additional parts and reducing costs while increasing efficiency.

[0064] The above description is only for illustrating the embodiments of this utility model and is not intended to limit this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A stator PCB board for a 12-slot, 10-pole, 2-channel parallel servo motor, comprising a PCB board body (25), wherein one side of the PCB board body (25) is designated as surface A (26) and the other side as surface B (27), characterized in that, Along the edge of the PCB board (25), 12 solder groove units are arranged circumferentially to correspond to the 12 coil windings that constitute the motor stator. Each solder groove unit includes 2 solder grooves, and the PCB board (25) has a total of 24 solder grooves. The A-side (26) is provided with U pads, V pads, W pads and A-side wiring. The A-side wiring includes A-side first circuit wiring (28), A-side second circuit wiring (29), A-side third circuit wiring (30), A-side fourth circuit wiring (31), A-side fifth circuit wiring (32) and A-side sixth circuit wiring (33), which are used for A-side circuit connection. The U pads, V pads and W pads are respectively used to connect with external three-phase lines UVW. The B-side (27) is provided with B-side wiring, including B-side first circuit wiring (34), B-side second circuit wiring (35), B-side third circuit wiring (36), B-side fourth circuit wiring (37), B-side fifth circuit wiring (38), B-side sixth circuit wiring (39), B-side seventh circuit wiring (40), B-side eighth circuit wiring (41) and B-side ninth circuit wiring (42), for B-side circuit connection; The PCB board (25) has a first via (43), a second via (44), a third via (45), a fourth via (46) and a fifth via (47) as channels for electrical connection between the A side (26) and the B side (27); By cooperating with the wiring on side A, the wiring on side B, 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 solder slots are connected according to the 10-pole magnetic field distribution requirements to form a two-parallel and two-series circuit structure.

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

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

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

5. A stator PCB board for a 12-slot, 10-pole, 2-channel parallel servo motor according to claim 4, characterized in that, The V pad is connected to the sixth circuit wiring (39) on the B side via the fourth via (46). The two ends of the sixth circuit wiring (39) on the B side are connected to the first solder groove (1) and the fifteenth solder groove (15) respectively. The second solder groove (2) is connected to the fourth solder groove (4) via the first circuit wiring (34) on the B side. 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. The thirteenth solder groove (13) is connected to the sixth circuit wiring (33) on the A side via the fifth via (47) through the seventh circuit wiring (40) on the B side. The W pad is connected to the 23rd solder pad (23) via the fourth circuit wiring (31) on the A side. The W pad is also connected to the third circuit wiring (36) on the B side via the first via (43). The third circuit wiring (36) on the B side is connected to the 9th solder pad (9). The 10th solder pad (10) is connected to the 12th solder pad (12) via the second circuit wiring (35) on the B side. The 11th solder pad (11) is connected to the first circuit wiring (28) on the A side. The 24th solder pad (24) is connected to the 22nd solder pad (22) via the eighth circuit wiring (41) on the B side. The 21st solder pad (21) is connected to the sixth circuit wiring (33) on the A side. The U-pad is connected to the seventeenth solder pad (17) 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 (45). 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 seventh solder pad (7). The eighth solder pad (8) is connected to the sixth solder pad (6) through the fourth circuit wiring (37) on the B side. The fifth solder pad (5) is connected to the first circuit wiring (28) on the A side. The eighteenth solder pad (18) is connected to the twentieth solder pad (20) through the ninth circuit wiring (42) on the B side. The nineteenth solder pad (19) is connected to the sixth circuit wiring (33) on the A side.

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

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

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

9. A stator PCB board for a 12-slot, 10-pole, 2-channel parallel servo motor according to claim 1, characterized in that, The PCB board (25) is provided with several positioning slots (48).

10. A stator PCB board for a 12-slot, 10-pole, 2-way parallel servo motor according to claim 1 or 9, characterized in that, The PCB board (25) is provided with several anti-fooling grooves (49).

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