A permanent magnet synchronous motor controller

Abstract

The application provides a permanent magnet synchronous motor controller and belongs to the technical field of permanent magnet synchronous motor control. The controller comprises a bearing table, a controller, a pivoting module and a wire management module. The bearing table is arranged at a specified position. The pivoting module comprises an assembling sheet, a hinged unit and a clamping unit. The wire management module comprises a winding roller and a power unit. The application solves the problems that the existing controller needs to be completely disassembled during maintenance, which results in a long maintenance period and easy damage to the precision connector, and the length of the cable at the rear of the controller cannot be shortened or lengthened when operating in a limited operation area, which is inconvenient for the smooth operation of the controller.

Description

Technical Field

[0001] This invention belongs to the field of permanent magnet synchronous motor control technology, and specifically relates to a permanent magnet synchronous motor controller. Background Technology

[0002] Permanent magnet synchronous motors are widely used in new energy vehicles, aerospace and high-end equipment due to their high power density and precise control characteristics. However, existing controllers have certain technical bottlenecks in terms of structural design, cable management and ease of maintenance.

[0003] The existing controller requires complete removal during maintenance, resulting in long maintenance cycles and easy damage to precision connectors. Furthermore, when operating in a limited work area, the length of the cable at the rear of the controller cannot be shortened or lengthened, which hinders the smooth operation of the controller. Summary of the Invention

[0004] This invention provides a permanent magnet synchronous motor controller, which aims to solve the problems of existing controllers requiring complete disassembly for maintenance, resulting in long maintenance cycles and easy damage to precision connectors, and the inability to shorten or lengthen the rear cable of the controller when operating in a limited working area, which hinders the smooth operation of the controller.

[0005] This invention provides a permanent magnet synchronous motor controller, comprising a support platform, a controller, a pivoting module, and a wire management module. The support platform is located at a designated position. The pivoting module consists of an assembly piece, a hinge unit, and a snap-fit ​​unit. One side of the assembly piece is hinged to the front side of the support platform via the hinge unit, and the other side of the assembly piece is snap-fitted to the support platform via the snap-fit ​​unit. The controller is locked onto the assembly piece, and the rear side of the controller communicates with the assembly piece and the storage cavity on the support platform.

[0006] The wire management module includes a winding roller and a power unit. The winding roller is hinged in the storage cavity of the support platform. A cable is wound on the winding roller. The support platform and the controller are connected via a cable. When the assembly piece rotates open around the hinge unit and the locking mechanism is released, the hinge unit uses the power unit to drive the winding roller to rotate counterclockwise to lengthen the cable. When the assembly piece closes via the hinge unit, the hinge unit uses the power unit to drive the winding roller to rotate clockwise to shorten the cable. At the same time, the locking unit can be bolted together when the assembly piece is close to the support platform. The winding roller as a whole has a gradually decreasing size from the locking unit to the hinge unit.

[0007] As a preferred technical solution for a permanent magnet synchronous motor controller, the support platform includes a tray and support blocks. The assembly piece is arranged on the outer wall of the tray, and multiple support blocks are arranged at the rear of the tray. The multiple support blocks are arranged in the cabinet via tension screws.

[0008] As a preferred technical solution for a permanent magnet synchronous motor controller, the hinge unit includes a support base, static rings, dynamic rings, and a pivot rod. The support base is arranged on one side of the outer wall of the tray. Multiple static rings are arranged on the inner side of the support base. The pivot rod is rotatably sleeved on the opposite side of the multiple static rings. At the same time, multiple dynamic rings are arranged on the surface of the pivot rod. One side of each of the multiple dynamic rings is fixedly connected to the assembly piece.

[0009] As a preferred technical solution for a permanent magnet synchronous motor controller, the snap-fit ​​unit includes a constraint base, a control lever, a plug rod, and a positioning cavity. The constraint base is arranged on the outer wall of the tray, and a guide groove is arranged on the inner side of the constraint base. The positioning cavity is reserved on the same side of the constraint base. When the assembly piece is rotated to be close to the tray, the axis of the positioning cavity coincides with the axis of the guide groove. The control lever is arranged on the outer wall of the assembly piece.

[0010] As a preferred technical solution for a permanent magnet synchronous motor controller, a first elastic element is movably connected to the inner side of the guide groove, and an insert rod is movably arranged on the inner side of the guide groove. The first elastic element and the side opposite to the insert rod are connected to each other. A curved contact portion is arranged on the side of the insert rod away from the first elastic element. When the assembly piece is rotated to be close to the tray, the curved contact portion is embedded into the inner side of the positioning cavity.

[0011] As a preferred technical solution for a permanent magnet synchronous motor controller, the winding roller has multiple guide channels reserved, and a displacement track is reserved at the opening of any guide channel on the winding roller. A second elastic element and a limiting slide are movably arranged on the inner side of the displacement track. The two ends of the second elastic element are respectively connected to the wall of the guide channel and the inner wall of the limiting slide. The peripheral wall of the limiting slide is close to the wall of the guide channel, and an adjustment piece is arranged at the outer edge of the limiting slide.

[0012] As a preferred technical solution for a permanent magnet synchronous motor controller, the power unit includes a power roller, a first toothed disc, a second toothed disc, a first umbrella disc, and a second umbrella disc. The first toothed disc is arranged on the outer wall of the pivot rod, and the second umbrella disc is arranged at one end of the winding roller. The power roller is hinged in the groove at one end of the tray. The power roller and the pivot rod are arranged in a way that never intersects. The second toothed disc and the first umbrella disc are arranged on the outer wall of the power roller. The first toothed disc and the second toothed disc are engaged and linked, and the first umbrella disc and the second umbrella disc are engaged and linked.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. The controller of the present invention is arranged on the outer wall of the assembly piece. One end of the assembly piece is hinged to the support platform via a hinge unit. When the rear of the controller is repaired or a cable is embedded, the assembly piece on the outer wall of the support platform is driven to fold counterclockwise away from the controller, exposing the rear of the controller. Then, the user stands in the operating area of ​​the controller to maintain the rear of the controller, which facilitates the user to maintain the controller.

[0015] 2. In this invention, the winding roller is arranged at the rear of the controller on the outer wall of the support platform. The cable at the rear of the controller is wound on the winding roller. The cable with an appropriate allowance is wound on the winding roller. During the process of the controller rotating and folding open, the winding roller can rotate, causing the cable to lengthen. This avoids the cable from being pulled off the port by external force during the rotation of the controller, which would prevent the controller from operating smoothly. The winding roller winds several groups of cables at the rear of the controller in layers, avoiding interference between the wires and improving safety.

[0016] 3. In this invention, the winding roller is hinged via a power unit and a hinge unit. When the assembly piece and the controller are arranged to rotate with the hinge unit, the hinge unit drives the winding roller to rotate via the power unit to achieve the effect of scaling the cable. During the process of the assembly piece and the controller being rotated and folded open via the hinge unit, the hinge unit drives the winding roller to rotate counterclockwise via the power unit to achieve the purpose of lengthening the cable. This avoids the user manually rotating the winding roller counterclockwise to lengthen the cable, making it easier for the user to scale the cable. The controller and the assembly piece are bolted together via a snap-fit ​​unit and a support platform to achieve the bolted connection of the cable on the outer wall of the winding roller. This prevents the exposed section of the cable from being lengthened under the action of external traction force, which would cause the cable with an appropriate allowance to be wound on the outer wall of the winding roller. This also prevents the cable from being pulled out of the port at the rear of the controller by external force, thus preventing the controller from failing to operate smoothly.

[0017] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0019] In the attached diagram:

[0020] Figure 1 This is a side-view structural diagram of an embodiment of the present invention;

[0021] Figure 2 This is a side-view structural diagram of an embodiment of the present invention;

[0022] Figure 3 This is an enlarged structural diagram at point X in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the support block structure according to an embodiment of the present invention;

[0024] Figure 5 This is an enlarged structural diagram at point Z in an embodiment of the present invention;

[0025] Figure 6 This is an enlarged structural diagram of the Y-axis in an embodiment of the present invention;

[0026] Figure 7 This is a top view of the open side structure according to an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram illustrating the connection structure between the high-voltage auxiliary power supply, the low-voltage auxiliary power supply, and other modules in an embodiment of the present invention.

[0028] Reference numerals: 100, support platform; 100a, tray; 100b, support block; 110, controller; 120, pivot module; 120a, assembly piece; 120b, support base; 120c, static ring; 120d, dynamic ring; 120e, pivot rod; 120f, constraint base; 120g, control lever; 120h, guide groove; 120i, insertion rod; 120j, first elastic element; 120k 120l, 130, 130, 130a, 130b, 130c, 130d, 130e, 130f, 130g, 130h, 130i, 130j, 130k, 130k, 130k, 130, 140, 130a, 130b, 130c, 130d, 130k ... Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] Reference Figures 1-8This invention relates to a permanent magnet synchronous motor controller, comprising a support platform 100, a controller 110, a pivoting module 120, and a wire management module 130. The support platform 100 is positioned at a designated location. The pivoting module 120 consists of an assembly piece 120a, a hinge unit, and a snap-fit ​​unit. One side of the assembly piece 120a is hinged to the front of the support platform 100 via the hinge unit, and the other side of the assembly piece 120a is snap-fitted onto the support platform 100 via the snap-fit ​​unit. The controller 110 is locked onto the assembly piece 120a. The rear of the controller 110 communicates with the assembly piece 120a and the storage cavity on the support platform 100. The wire management module 130 includes a winding roller 130a and a power unit. The winding roller 130a is hinged... The cable 140 is wound on the winding roller 130a in the storage cavity of the support platform 100. The internal interface between the support platform 100 and the controller 110 is connected through the cable 140. When the assembly piece 120a rotates open around the hinge unit and the locking mechanism is released, the hinge unit uses the power unit to drive the winding roller 130a to rotate counterclockwise to lengthen the cable 140. When the assembly piece 120a is closed through the hinge unit, the hinge unit relies on the power unit to drive the winding roller 130a to rotate clockwise to wind the cable 140. The locking unit can bolt the assembly piece 120a and the support platform 100 together after their positions are aligned. The winding roller 130a is tapered from the locking unit to the hinge unit.

[0031] When laying the cable 140 in the area where the controller 110 is located at the rear and the front of the support platform 100, the first step is to use the snap-fit ​​unit to release the constraint between the assembly piece 120a and the support platform 100. Then, with the hinge unit as the center, the assembly piece 120a is folded counterclockwise on the front of the support platform 100, and the controller 110 rotates synchronously, causing the controller 110 to gradually expose its rear space. When the assembly piece 120a rotates, the hinge unit and the power unit control the winding roller 130a to rotate, releasing the cable 140 at the rear of the controller 110 and releasing the original winding constraint of the cable 140. Then, the cable 140 to be added is wound onto the surface of the winding roller 130a, with a fitting allowance left at both ends of the cable 140. The two ends are respectively connected to the ports at the rear of the support platform 100 and the controller 110. The assembly piece 120a is closed to the support platform 100 by rotating clockwise. Then, the assembly piece 120a and the support platform 100 are bolted together by the snap-fit ​​unit, so that the controller 110 is installed in the cabinet. When the assembly piece 120a is rotated, the hinge unit and the power unit drive the winding roller 130a to rotate. Several groups of cables 140 at the rear of the controller 110 are wound equidistantly on the outer wall of the winding roller 130a. When the snap-fit ​​unit bolts the assembly piece 120a to the support platform 100, the hinge unit, the power unit and the winding roller 130a are all bolted to the assembly piece 120a to ensure that the winding shape of the cables 140 is stable.

[0032] In this embodiment, during the rear maintenance of the controller 110, the assembly piece 120a is pushed to fold and open counterclockwise with the controller 110 around the hinge unit, forming the rear operating area of ​​the controller 110, which is convenient for user maintenance. A winding roller 130a is installed at the rear of the controller 110. During the rotation arrangement of the assembly piece 120a and the controller 110 via the hinge unit, the hinge unit drives the winding roller 130a to rotate via the power unit to shorten the cable 140, thereby realizing the automatic recovery of the cable 140 by the winding roller 130a. Several groups of cables 140 at the rear of the controller 110 are wound in layers by the winding roller 130a to avoid interference between the lines and improve safety. During the rotation and folding of the assembly piece 120a and the controller 110 via the hinge unit, the hinge unit drives the winding roller 130a to rotate via the power unit to lengthen the cable 140, avoiding interference with the opening of the controller 110, and at the same time realizing the automatic lengthening of the cable 140 via the winding roller 130a.

[0033] When the controller 110 and the assembly piece 120a are bolted together with the support platform 100 via the snap-fit ​​unit, the hinge unit, the power unit and the winding roller 130a are all locked together with the assembly piece 120a. At this time, the cable 140 on the outer wall of the winding roller 130a is bolted together to prevent the cable 140 from coming off the port due to external force pulling.

[0034] The longitudinal cross-sectional area of ​​the winding roller 130a on the side furthest from the hinge unit is larger than that on the other side, gradually increasing axially from the hinge unit end towards the snap-fit ​​unit end. This results in an axial gradient difference in the amount of cable 140 retracted or released on its outer wall surface for each revolution of the cable 140.

[0035] During the counter-clockwise folding apart of the assembly piece 120a and the controller 110, the cable 140 near the hinge unit at the rear of the controller 110 extends less, while the cable 140 further away from the hinge unit extends more. When the cable 140 is reset by rotating the variable-diameter winding roller 130a, the length of several sets of cables 140 automatically matches the longitudinal cross-sectional area of ​​the winding roller 130a. This ensures that after the assembly piece 120a and the controller 110 are rotated and closed, the cable 140 can be completely reset and adhered to the outer wall of the winding roller 130a, achieving precise control of the cable 140 in complex displacement scenarios.

[0036] Reference Figures 1-8In one embodiment, the support platform 100 includes a tray 100a and support blocks 100b. Assembly piece 120a is arranged on the outer wall of the tray 100a. Multiple support blocks 100b are arranged at the rear of the tray 100a and are positioned within the cabinet via tension screws. The tray 100a completely covers the front of the support blocks 100b, creating a clean facade. When the support blocks 100b are obstructed, a wire cavity is formed between the tray 100a and the cabinet, allowing one end of the cable 140 at the rear of the controller 110 to pass through the wire cavity and connect to the external system. The hinge unit includes a support base 120b, a static ring 120c, a dynamic ring 120d, and a pivot. A pivot rod 120e and a supporting base 120b are arranged on one side of the outer wall of the tray 100a. Multiple static rings 120c are arranged on the inner side of the supporting base 120b. A pivot rod 120e is rotatably sleeved on the opposite side of the multiple static rings 120c. At the same time, multiple dynamic rings 120d are arranged on the surface of the pivot rod 120e. One side of each of the multiple dynamic rings 120d is fixedly connected to the assembly piece 120a. During the process of the assembly piece 120a rotating counterclockwise to open or rotating clockwise to close, the dynamic rings 120d rotate with the assembly piece 120a. Then, the pivot rod 120e rotates with the dynamic rings 120d around the supporting base 120b and the static rings 120c.

[0037] Reference Figures 1-8 In one embodiment, the snap-fit ​​unit includes a constraint base 120f, a lever 120g, a plug 120i, and a positioning cavity 120l. The constraint base 120f is arranged on the outer wall of the tray 100a, and a guide groove 120h is arranged on the inner side of the constraint base 120f. The positioning cavity 120l is reserved on the same side as the constraint base 120f. When the assembly piece 120a is rotated to be close to the tray 100a, the axis of the positioning cavity 120l coincides with the axis of the guide groove 120h. The lever 120g is arranged... On the outer wall of the assembly piece 120a, a first elastic member 120j is movably connected to the inner side of the guide groove 120h, and an insertion rod 120i is movably arranged on the inner side of the guide groove 120h. The first elastic member 120j and the insertion rod 120i are connected to each other on opposite sides. A curved contact portion 120k is arranged on the side of the insertion rod 120i away from the first elastic member 120j. When the assembly piece 120a is rotated to be close to the tray 100a, the curved contact portion 120k is embedded into the inner side of the positioning cavity 120l.

[0038] When the assembly piece 120a is placed against the outer wall of the tray 100a, the insertion rod 120i is detachably connected to the assembly piece 120a via the curved contact portion 120k and the positioning cavity 120l. During the wiring process at the rear of the controller 110, a traction force is applied to the control lever 120g, causing the positioning cavity 120l to move under the control of the assembly piece 120a. This allows the opening of the positioning cavity 120l to create a circumferential constraint on the curved contact portion 120k, causing the curved contact portion 120k to retract outward from the positioning cavity 120l. Once the curved contact portion 120k has completely retracted from the positioning cavity 120l, the circumferential constraint ends, and continued force can drive the assembly piece 120a to rotate without constraint.

[0039] Reference Figures 1-8 In one embodiment, a plurality of guide channels 130c are reserved on the winding roller 130a. A displacement track 130d is reserved at the opening of any guide channel 130c on the winding roller 130a. A second elastic element 130e and a limiting slide post 130f are movably arranged on the inner side of the displacement track 130d. The two ends of the second elastic element 130e are respectively connected to the wall surface of the guide channel 130c and the inner wall surface of the limiting slide post 130f. The peripheral wall of the limiting slide post 130f is close to the wall surface of the guide channel 130c. An adjusting piece 130g is arranged at the outer edge of the limiting slide post 130f.

[0040] During the process of inserting cable 140 into controller 110, the plug of cable 140 is inserted into the port at the rear of controller 110. Then, a pushing force is applied to the adjusting plate 130g towards the inside of displacement track 130d, causing the limiting slide 130f to move towards the inside of displacement track 130d, exposing the cavity of guide channel 130c. At this time, the second elastic element 130e is compressed by the limiting slide 130f, resulting in a pushing force in the opposite direction of compression. Then, cable 140 is inserted into guide channel 130c. Then, the pushing force applied to adjusting plate 130g is released, causing the second elastic element 130e to push the limiting slide 130f to move horizontally towards guide channel 130c, achieving the purpose of closing the cavity of guide channel 130c again via limiting slide 130f. The guide channel 130c constrains and arranges the cable 140 within it. During the rotation of the winding roller 130a, the cable 140 can shorten and be wound around the winding roller 130a. Several guide channels 130c are reserved on the outer wall of the winding roller 130a. The several guide channels 130c on the outer wall of the winding roller 130a correspond to multiple sets of cables 140. Multiple sets of cables 140 are spatially separated through the guide channels 130c, causing multiple sets of cables 140 to retract through the winding roller 130a. Under the action of the limiting slide 130f and the second elastic element 130e, the opening and closing effect of the guide channel 130c cavity is achieved. The cable 140 can be arranged in the guide channel 130c without the need for a cable plug, allowing the cable 140 and the winding roller 130a to be stored without obstruction.

[0041] Reference Figures 1-8 The power unit includes a power roller 130b, a first toothed disc 130h, a second toothed disc 130i, a first umbrella disc 130j, and a second umbrella disc 130k. Toothed strips are arranged on the surfaces of the first umbrella disc 130j and the second umbrella disc 130k. The first toothed disc 130h is arranged on the outer wall of the pivot rod 120e. The second umbrella disc 130k is arranged at one end of the winding roller 130a. The power roller 130b is hinged in the groove at one end of the tray 100a. The power roller 130b and the pivot rod 120e are arranged in a way that never intersects. The second toothed disc 130i and the first umbrella disc 130j are arranged on the power roller 130b. On the outer wall of 30b, the first toothed disc 130h and the second toothed disc 130i are engaged and linked, as are the first umbrella disc 130j and the second umbrella disc 130k. When the pivot rod 120e rotates with the opening and closing process of the assembly piece 120a, the first toothed disc 130h rotates with the pivot rod 120e. The engagement of the first toothed disc 130h drives the second toothed disc 130i to rotate, controlling the rotation of the power roller 130b and the first umbrella disc 130j. The engagement of the first umbrella disc 130j drives the rotation of the second umbrella disc 130k, controlling the rotation of the winding roller 130a, thereby realizing the action of shortening or lengthening the cable 140.

[0042] Reference Figures 1-8The controller 110 has a high-voltage auxiliary power supply drawn from the DC bus and a low-voltage auxiliary power supply drawn from an external low-voltage source. It also includes modules such as a control system, a drive circuit, and a hardware protection circuit. The drive circuit is powered by both the high-voltage and low-voltage auxiliary power supplies; the high-voltage auxiliary power supply powers the drive circuit through a power supply loop, and the low-voltage auxiliary power supply also powers the drive circuit through a power supply loop. The hardware protection circuit is powered by both the high-voltage and low-voltage auxiliary power supplies; the high-voltage auxiliary power supply powers the hardware protection circuit through a power supply loop, and the low-voltage auxiliary power supply also powers the hardware protection circuit through a power supply loop. The control system is powered by both the high-voltage and low-voltage auxiliary power supplies; there is a power supply loop between the high-voltage and control systems, and a power supply loop between the low-voltage and control systems. The hardware protection circuit and... The drive circuits are interconnected by a protection signal link. Internally, each drive circuit has a protection priority circuit to ensure that a protection signal is received and protective action is initiated, ignoring PWM signals sent by the control system. To reduce costs, the low-voltage auxiliary power supply outputs only one low-side drive power supply and does not output a high-side drive power supply. The low-voltage auxiliary power supply only provides the power required for active short-circuit protection when the high-voltage auxiliary power supply fails; therefore, its power is relatively small, and the output drive power of the low-voltage auxiliary power supply is less than 30% of that of the high-voltage auxiliary power supply. The hardware protection circuit includes a comparator circuit that compares the bus voltage with a set value; when the voltage exceeds the set value, the comparator activates. The hardware protection circuit also includes a latching circuit, which holds the fault signal after the comparator activates and maintains it until power-down. Finally, the hardware protection circuit includes a power supply voltage undervoltage detection circuit; when the power supply is undervoltage, no fault protection signal is output.

[0043] The specific implementation method is as follows: During the process of installing and removing the cable 140 at the rear of the controller 110, a traction force is first applied to the assembly piece 120a via the control lever 120g, causing the positioning cavity 120l to shift under the control of the assembly piece 120a. This causes the opening of the positioning cavity 120l to create a circumferential constraint on the curved contact portion 120k, causing the curved contact portion 120k to retract outward from the positioning cavity 120l. When the curved contact portion 120k completely retracts from the positioning cavity 120l, the circumferential constraint ends. Continuing to apply the traction force can drive the assembly piece 120a to rotate without constraint. When the assembly piece 120... When the controller 110 is folded counterclockwise to a right angle, the rear part of the controller 110 is exposed to the left through the receiving cavity of the assembly piece 120a. The dynamic ring 120d rotates with the rotation of the assembly piece 120a, causing the pivot rod 120e to rotate around the supporting base 120b and the static ring 120c via the dynamic ring 120d. Then, the first toothed disc 130h rotates with the pivot rod 120e, and the first toothed disc 130h engages to drive the second toothed disc 130i to rotate. This controls the rotation of the power roller 130b and the first umbrella disc 130j, and the first umbrella disc 130j engages to drive the second umbrella disc 130k to rotate. The control roller 130a rotates, causing it to extend the cable 140. The rear of the controller 110 is exposed as the assembly piece 120a folds open, allowing the user to maintain or arrange the cable 140 within the exposed operating area of ​​the tray 100a and controller 110. Then, a pushing force is applied to the adjusting piece 130g towards the inside of the displacement track 130d, causing the limiting slide post 130f to move inwards towards the displacement track 130d, exposing the cavity of the guide channel 130c. At this time, the second elastic element 130e is compressed by the limiting slide post 130f and appears... A thrust opposite to the compression direction is applied, and then the cable 140 is inserted into the guide channel 130c. Then, the thrust applied to the adjusting plate 130g is released, causing the second elastic element 130e to push the limiting slide 130f to move horizontally toward the guide channel 130c, so as to close the cavity of the guide channel 130c again via the limiting slide 130f, so that the guide channel 130c constrains the cable 140 therein. Subsequently, the two ends of the cable 140 are embedded in the corresponding ports of the outer wall of the tray 100a and the rear of the controller 110, respectively, to realize the arrangement of the cable 140.Rotating the assembly piece 120a clockwise causes it to press firmly against the outer wall of the tray 100a again. The dynamic ring 120d rotates clockwise as the assembly piece 120a rotates, causing the pivot rod 120e to rotate clockwise with the dynamic ring 120d. Then, the first toothed disc 130h rotates clockwise with the pivot rod 120e, and its engagement drives the second toothed disc 130i to rotate counterclockwise. This controls the power roller 130b to rotate counterclockwise with the first umbrella disc 130j, and the first umbrella disc 130j's engagement drives the second umbrella disc 130k to rotate clockwise, controlling the winding roller 130a to rotate clockwise. This achieves the purpose of retrieving the cable 140 embedded in the guide channel 130c.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet synchronous motor controller, characterized in that, The device includes a support platform (100), a controller (110), a pivot module (120), and a wire management module (130). The support platform (100) is located at a designated position. The pivot module (120) consists of an assembly piece (120a), a hinge unit, and a snap-fit ​​unit. One side of the assembly piece (120a) is hinged to the front of the support platform (100) via the hinge unit, and the other side of the assembly piece (120a) is snap-fitted onto the support platform (100) via the snap-fit ​​unit. The controller (110) is locked onto the assembly piece (120a), and the rear side of the controller (110) is connected to the assembly piece (120a) and the storage cavity on the support platform (100). The wire management module (130) includes a winding roller (130a) and a power unit. The winding roller (130a) is hinged in the storage cavity of the support platform (100). A cable (140) is wound on the winding roller (130a). The support platform (100) and the controller (110) are connected via the cable (140). The snap-fit ​​unit can be bolted together when the assembly piece (120a) is close to the support platform (100). The winding roller (130a) is tapered from the snap-fit ​​unit to the hinge unit. The support platform (100) includes a tray (100a) and support blocks (100b). The assembly piece (120a) is arranged on the outer wall of the tray (100a). A plurality of support blocks (100b) are arranged at the rear of the tray (100a). The plurality of support blocks (100b) are arranged in the cabinet via tension screws. The hinge unit includes a support base (120b), a static ring (120c), a dynamic ring (120d), and a pivot rod (120e). The support base (120b) is arranged on one side of the outer wall of the tray (100a). Multiple static rings (120c) are arranged on the inner side of the support base (120b). The pivot rod (120e) is rotatably sleeved on the opposite side of the multiple static rings (120c). At the same time, multiple dynamic rings (120d) are arranged on the surface of the pivot rod (120e). One side of each of the multiple dynamic rings (120d) is fixedly connected to the assembly piece (120a). The power unit includes a power roller (130b), a first toothed disc (130h), a second toothed disc (130i), a first umbrella disc (130j), and a second umbrella disc (130k). The first toothed disc (130h) is arranged on the outer wall of the pivot rod (120e). The second umbrella disc (130k) is arranged at one end of the winding roller (130a). The power roller (130b) is hinged in the groove at one end of the tray (100a). The power roller (130b) and the pivot rod (120e) are arranged in a way that never intersects. The second toothed disc (130i) and the first umbrella disc (130j) are arranged on the outer wall of the power roller (130b). The first toothed disc (130h) and the second toothed disc (130i) are engaged and linked. The first umbrella disc (130j) and the second umbrella disc (130k) are engaged and linked.

2. A permanent magnet synchronous motor controller according to claim 1, characterized in that: The snap-fit ​​unit includes a constraint base (120f), a control lever (120g), a plug (120i), and a positioning cavity (120l). The constraint base (120f) is arranged on the outer wall of the tray (100a). A guide groove (120h) is arranged on the inner side of the constraint base (120f). The positioning cavity (120l) is reserved on the same side of the constraint base (120f). When the assembly piece (120a) is rotated to be close to the tray (100a), the axis of the positioning cavity (120l) coincides with that of the guide groove (120h). The control lever (120g) is arranged on the outer wall of the assembly piece (120a).

3. A permanent magnet synchronous motor controller according to claim 2, characterized in that: The guide groove (120h) is movably connected to a first elastic element (120j), and a plug rod (120i) is movably arranged on the inside of the guide groove (120h). The first elastic element (120j) and the plug rod (120i) are connected to each other on opposite sides. A curved contact portion (120k) is arranged on the side of the plug rod (120i) away from the first elastic element (120j). When the assembly piece (120a) is rotated and placed close to the tray (100a), the curved contact portion (120k) is embedded into the inside of the positioning cavity (120l).

4. A permanent magnet synchronous motor controller according to claim 3, characterized in that: The winding roller (130a) has multiple guide channels (130c) reserved on it. A displacement track (130d) is reserved at the opening of any guide channel (130c) on the winding roller (130a). A second elastic element (130e) and a limiting slide post (130f) are movably arranged on the inner side of the displacement track (130d). The two ends of the second elastic element (130e) are respectively connected to the wall surface of the guide channel (130c) and the inner wall surface of the limiting slide post (130f). The peripheral wall of the limiting slide post (130f) is close to the wall surface of the guide channel (130c). An adjusting piece (130g) is arranged at the outer edge of the limiting slide post (130f).

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