Permanent magnet feeding device and flywheel energy storage equipment

Abstract

The application relates to the technical field of motor manufacturing equipment, in particular to a permanent magnet feeding device and a flywheel energy storage device. The device comprises an N-pole buffer bin, an S-pole buffer bin, a conveying mechanism, a rotating sorting disc and a counting sensor; the N-pole buffer bin stores N-pole permanent magnets, and the S-pole buffer bin stores S-pole permanent magnets; the rotating sorting disc is provided with a plurality of clamping grooves in the circumferential direction, and the rotating sorting disc rotates to make the plurality of clamping grooves reach predetermined feeding positions in sequence; when the current clamping groove reaches the predetermined feeding position, the conveying mechanism conveys the N-pole permanent magnet or the S-pole permanent magnet into the current clamping groove; when the current clamping groove rotates to the predetermined feeding position, the counting sensor detects whether the permanent magnet in the current clamping groove is in place; and the permanent magnets in the plurality of clamping grooves can be correspondingly transferred into a plurality of permanent magnet mounting portions of a motor rotor. The application solves the problem of the current manual visual inspection and manual feeding mode, and improves the efficiency.

Description

Technical Field

[0001] This application relates to the field of motor manufacturing equipment technology, and in particular to a permanent magnet feeding device and a flywheel energy storage device. Background Technology

[0002] In the motor rotor of a flywheel energy storage device, the installation accuracy of permanent magnets (usually strong magnetic materials such as neodymium iron boron and samarium cobalt) directly affects the motor's performance and reliability. The permanent magnets must be precisely fitted onto the rotor surface or embedded in the magnet slots according to a specific magnetic pole sequence (such as alternating N-S-N or a customized polarity arrangement). Failure to install the specified number of permanent magnets will result in: 1. Motor magnetic field distortion: abnormal torque output, reduced efficiency, and even vibration and noise.

[0003] 2. Flywheel energy storage device failure: energy storage density decreases and charge / discharge cycle stability deteriorates.

[0004] 3. Safety hazards: Local demagnetization or short circuit in the magnetic circuit may damage other components of the motor.

[0005] Currently, the large flywheel industry mainly relies on manual visual inspection and manual loading, where operators install permanent magnets one by one onto the rotor. However, this method is inefficient, as a single rotor has a large number of permanent magnets (usually dozens to hundreds), and manual loading is time-consuming and labor-intensive. Summary of the Invention

[0006] The purpose of this application is to provide a permanent magnet feeding device and a flywheel energy storage device, thereby solving the problems of low efficiency, large number of permanent magnets per rotor (usually dozens to hundreds of pieces), and time-consuming and labor-intensive manual feeding methods that rely on manual visual inspection and manual feeding.

[0007] According to a first aspect of this application, a permanent magnet feeding device is provided, including an N-pole buffer hopper, an S-pole buffer hopper, a conveying mechanism, a rotary sorting tray, a counting sensor, and a controller; the N-pole buffer hopper stores a plurality of N-pole permanent magnets and is provided with a discharge port, and the S-pole buffer hopper stores a plurality of S-pole permanent magnets and is provided with a discharge port; the rotary sorting tray is provided with a plurality of slots circumferentially, and the rotary sorting tray is rotatable so that the plurality of slots sequentially reach a predetermined feeding position; when the current slot reaches the predetermined feeding position, the conveying mechanism can discharge the N-pole permanent magnets from the discharge port of the N-pole buffer hopper or the S-pole buffer hopper. The permanent magnet or the S-pole permanent magnet is conveyed to the current slot; the counting sensor is fixed at the predetermined feeding position. When the rotating sorting tray drives the current slot to rotate to the predetermined feeding position, the counting sensor can detect whether the permanent magnet in the current slot is in place. If the permanent magnet is in place, the counting sensor sends a position signal to the controller, and the controller accumulates the count. If the permanent magnet is not in place, the controller issues an alarm signal; the number of slots on the rotating sorting tray is equal to the number of permanent magnet mounting parts on the motor rotor, and they correspond one-to-one. The permanent magnets in multiple slots can be transferred to multiple permanent magnet mounting parts accordingly.

[0008] In any of the above technical solutions, the conveying mechanism further includes a conveying channel and a first telescopic rod; the discharge port of the N-pole buffer hopper and the discharge port of the S-pole buffer hopper are both connected to the conveying channel, and the first telescopic rod is connected to the end of the conveying channel. The first telescopic rod can extend to output the N-pole permanent magnet or the S-pole permanent magnet in the conveying channel from the beginning of the conveying channel; each slot can dock with the beginning of the conveying channel, and the rotating sorting tray can rotate so that multiple slots dock with the beginning of the conveying channel in sequence; when the current slot docks with the beginning of the conveying channel, the first telescopic rod can extend to output the N-pole permanent magnet or the S-pole permanent magnet in the conveying channel from the beginning of the conveying channel into the current slot.

[0009] In any of the above technical solutions, further, the plurality of slots are divided into alternately arranged N-pole slots and S-pole slots. The discharge ports of the N-pole buffer hopper and the S-pole buffer hopper alternately feed permanent magnets into the conveying channel. When the current N-pole slot is connected to the first end of the conveying channel, the discharge port of the N-pole buffer hopper feeds the N-pole permanent magnet into the conveying channel, and the first telescopic rod extends to output the N-pole permanent magnet in the conveying channel from the first end of the conveying channel to the current N-pole slot. When the current S-pole slot is connected to the first end of the conveying channel, the discharge port of the S-pole buffer hopper feeds the S-pole permanent magnet into the conveying channel, and the first telescopic rod extends to output the S-pole permanent magnet in the conveying channel from the first end of the conveying channel to the current S-pole slot.

[0010] In any of the above technical solutions, the permanent magnet feeding device further includes an N-pole Hall sensor and an S-pole Hall sensor. The N-pole Hall sensor is installed at the outlet of the N-pole buffer hopper. When the outlet of the N-pole buffer hopper feeds the N-pole permanent magnet into the conveying channel, the N-pole Hall sensor detects the N-pole permanent magnet fed from the outlet of the N-pole buffer hopper. If the detection result indicates that the polarity is N, the first telescopic rod extends. If the detection result indicates that the polarity is not N, the controller issues an alarm signal. The S-pole Hall sensor is installed at the outlet of the S-pole buffer hopper. When the outlet of the S-pole buffer hopper feeds the S-pole permanent magnet into the conveying channel, the S-pole Hall sensor detects the S-pole permanent magnet fed from the outlet of the S-pole buffer hopper. If the detection result indicates that the polarity is S, the first telescopic rod extends. If the detection result indicates that the polarity is not S, the controller issues an alarm signal.

[0011] In any of the above technical solutions, further, each of the N-pole slots is equipped with an S-pole magnet of opposite polarity, and each of the S-pole slots is equipped with an N-pole magnet of opposite polarity.

[0012] In any of the above technical solutions, the permanent magnet feeding device further includes a motor and a connecting gear; the inner side of the rotating sorting disc is provided with internal teeth; the conveying end of the motor is connected to the connecting gear, the connecting gear meshes with the internal teeth, and the motor is a stepper motor or a servo motor.

[0013] In any of the above technical solutions, the conveying mechanism further includes a first telescopic cylinder, which includes a first telescopic rod; the current slot is connected to the first end of the conveying channel, and after the first telescopic rod extends, if the counting sensor detects that the permanent magnet in the current slot is not in place, the controller issues an alarm signal.

[0014] In any of the above technical solutions, the controller further stores the total number of card slots in advance; when the number of arrival signals received by the controller from the counting sensor reaches the total number of card slots, the controller controls the rotating sorting disk to rotate so that the card slots on the rotating sorting disk correspond to the positions of the permanent magnet mounting parts on the motor rotor.

[0015] In any of the above technical solutions, the permanent magnet feeding device further includes a pressing mechanism and a second telescopic cylinder; the pressing mechanism is disposed above the rotary sorting disc, the second telescopic cylinder is disposed above the pressing mechanism and connected to the pressing mechanism, and the rotary sorting disc is disposed above the motor rotor; the slot is open below, and when the slot on the rotary sorting disc corresponds to the position of the permanent magnet mounting part on the motor rotor, the second telescopic cylinder drives the pressing mechanism to press the permanent magnet in the slot into the permanent magnet mounting part of the motor rotor.

[0016] According to a second aspect of this application, a flywheel energy storage device is provided, including a permanent magnet feeding device as described above, and the flywheel energy storage device further includes the motor rotor.

[0017] The permanent magnet feeding device of this application includes an N-pole buffer hopper, an S-pole buffer hopper, a conveying mechanism, a rotary sorting tray, a counting sensor, and a controller. The system includes an N-pole buffer hopper containing multiple N-pole permanent magnets with a discharge port, and an S-pole buffer hopper containing multiple S-pole permanent magnets with a discharge port. A rotating sorting disc has multiple slots circumferentially arranged, allowing it to rotate so that the slots sequentially reach predetermined loading positions. When a slot reaches its predetermined loading position, a conveying mechanism transports the N-pole or S-pole permanent magnets from the discharge ports of the N-pole or S-pole buffer hoppers to the current slot. A counting sensor is fixed at the predetermined loading position. When the rotating sorting disc rotates the current slot to its predetermined loading position, the counting sensor detects whether the permanent magnet in the slot is in place. If the permanent magnet is in place, the counting sensor sends a position signal to the controller, which accumulates the count. If the permanent magnet is not in place, the controller issues an alarm signal. The number of slots on the rotating sorting disc corresponds to the number of permanent magnet mounting parts on the motor rotor, and the permanent magnets in the multiple slots can be transferred to the corresponding permanent magnet mounting parts.

[0018] Based on the above technical features, the beneficial effects of this application are as follows: The permanent magnet feeding device of this application specifically feeds the magnets as follows: First, the controller controls the rotating sorting tray to rotate so that multiple slots arrive at the predetermined feeding position in sequence.

[0019] Subsequently, when the current slot reaches the predetermined feeding position, the conveying mechanism will transport the N-pole permanent magnet or S-pole permanent magnet from the outlet of the N-pole buffer hopper or S-pole buffer hopper into the current slot.

[0020] During the process, the counting sensor can detect whether the permanent magnet in the current card slot is in place (whether it exists). If the permanent magnet is in place, the counting sensor sends a position signal to the controller, and the controller accumulates the count. If the permanent magnet is not in place (does not exist), it indicates that there is a problem of missing permanent magnet in the current card slot, and the controller issues an alarm signal to prompt manual intervention.

[0021] Finally, once all the slots of the rotating sorting tray are filled with permanent magnets, the permanent magnets in the slots are transferred one by one to the permanent magnet mounting parts of the motor rotor.

[0022] With this configuration, if the permanent magnet feeding device of this application fails to feed the magnets midway (insufficient quantity), an alarm will be triggered, prompting manual intervention, thus solving the problem of missing permanent magnets on the motor rotor. Moreover, compared with the existing technology of manual visual inspection and manual feeding, it is more efficient and less labor-intensive.

[0023] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram showing the overall position of the permanent magnet feeding device according to an embodiment of this application; Figure 2 Show Figure 1 Partial schematic diagram; Figure 3 A schematic diagram of the overall structure of the pressing mechanism according to an embodiment of this application is shown; Figure 4 A schematic diagram of a permanent magnet feeding device according to an embodiment of this application is shown. Figure 5 A schematic diagram of the overall structure of the permanent magnet feeding device according to an embodiment of this application is shown.

[0026] Icons: 100-Feeding bin; 200-N-pole buffer bin; 201-N-pole permanent magnet; 300-S-pole buffer bin; 301-S-pole permanent magnet; 400-Rotary sorting tray; 401-Slot; 402-Pin hole; 403-Permanent magnet; 501-Conveying channel; 502-First telescopic rod; 503-First telescopic cylinder; 601-N-pole Hall sensor; 602-S-pole Hall sensor; 701-Motor; 702-Connecting gear; 703-Internal gear; 801-Counting sensor; 802-Opposite magnet; 803-Bracket; 901-Pressure fitting mechanism; 902-Second telescopic cylinder; 903-Motor rotor; 904-Transfer channel; 905-Third telescopic cylinder. Detailed Implementation

[0027] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0028] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0029] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0030] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0031] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0032] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0033] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0034] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0035] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0036] The first aspect of this application provides a permanent magnet feeding device, thereby solving the problems of low efficiency, high labor intensity, and time-consuming manual feeding due to the current reliance on manual visual inspection and manual feeding methods, which involve a large number of permanent magnets per rotor (usually dozens to hundreds). See below for reference. Figures 1 to 5 This application describes a permanent magnet feeding device according to some embodiments.

[0037] like Figure 1 , Figure 2 and Figure 5 As shown, the permanent magnet feeding device of this application includes an N-pole buffer hopper 200, an S-pole buffer hopper 300, a conveying mechanism, a rotary sorting tray 400, a counting sensor 801, and a controller. The N-pole buffer hopper 200 stores multiple N-pole permanent magnets 201 and has a discharge port. The S-pole buffer hopper 300 stores multiple S-pole permanent magnets 301 and has a discharge port. The rotary sorting tray 400 has multiple open slots 401 on its circumferential outer edge. The rotary sorting tray 400 can rotate so that the multiple slots 401 sequentially reach predetermined feeding positions. When the current slot 401 reaches the predetermined feeding position, the conveying mechanism can transport the N-pole permanent magnets 201 or S-pole permanent magnets 301 from the discharge port of the N-pole buffer hopper 200 or the S-pole buffer hopper 300 into the current slot 401. The counting sensor 801... Sensor 801 is fixed at the predetermined feeding position by bracket 803. When the rotating sorting tray 400 drives the current slot 401 to rotate to the predetermined feeding position, the counting sensor 801 can detect whether the permanent magnet in the current slot 401 is in place. If the permanent magnet is in place, the counting sensor 801 sends an in place signal to the controller, and the controller accumulates the count. If the permanent magnet is not in place, the controller issues an alarm signal. The number of slots 401 on the rotating sorting tray 400 is equal to the number of permanent magnet mounting parts on the motor rotor 903, and they correspond one-to-one. The permanent magnets in multiple slots 401 can be transferred to multiple permanent magnet mounting parts.

[0038] The permanent magnet feeding device of this application specifically feeds the magnets as follows: First, the controller controls the rotating sorting tray 400 to rotate so that multiple slots 401 sequentially reach the predetermined feeding position.

[0039] Subsequently, when the current slot 401 reaches the predetermined feeding position, the conveying mechanism will transport the N-pole permanent magnet 201 or S-pole permanent magnet 301 from the discharge port of the N-pole buffer hopper 200 or the S-pole buffer hopper 300 into the current slot 401.

[0040] During the process, the counting sensor 801 can detect whether the permanent magnet in the current card slot 401 is in place (existence). If the permanent magnet is in place, the counting sensor 801 sends an in place signal to the controller, and the controller accumulates the count. If the permanent magnet is not in place (does not exist), it indicates that there is a problem of missing permanent magnet in the current card slot 401, and the controller issues an alarm signal to prompt manual intervention.

[0041] Finally, after all the slots 401 of the rotating sorting tray 400 are filled with permanent magnets, the permanent magnets in the slots 401 are transferred one by one to the permanent magnet mounting parts of the motor rotor 903.

[0042] With this configuration, if the permanent magnet feeding device of this application fails to feed the magnets midway (insufficient quantity), an alarm will be triggered, prompting manual intervention, thus solving the problem of missing permanent magnets on the motor rotor. Moreover, compared with the existing technology of manual visual inspection and manual feeding, it is more efficient and less labor-intensive.

[0043] In the embodiments of this application, such as Figure 1 and Figure 5 As shown, the conveying mechanism of this application includes a conveying channel 501 and a first telescopic rod 502. The discharge port of the N-pole buffer hopper 200 and the discharge port of the S-pole buffer hopper 300 are both connected to the conveying channel 501. The first telescopic rod 502 is connected to the end of the conveying channel 501. The first telescopic rod 502 can extend to output the N-pole permanent magnet 201 or the S-pole permanent magnet 301 in the conveying channel 501 from the beginning of the conveying channel 501.

[0044] In the embodiments of this application, such as Figure 5 As shown, the conveying mechanism of this application also includes two transfer channels 904 and two third telescopic cylinders 905. The N-pole buffer hopper 200 is vertically arranged and stores multiple vertically stacked N-pole permanent magnets 201. A discharge port is provided at its bottom, which is connected to the conveying channel 501 via the horizontal transfer channels 904. The telescopic rod of the corresponding third telescopic cylinder can push the bottommost N-pole permanent magnet 201 of the N-pole buffer hopper 200 from the transfer channels 904 into the conveying channel 501. Similarly, the S-pole buffer hopper 300 is vertically arranged and stores multiple vertically stacked S-pole permanent magnets 301. A discharge port is provided at its bottom, which is connected to the conveying channel 501 via the horizontal transfer channels 904. The telescopic rod of the corresponding third telescopic cylinder can push the bottommost S-pole permanent magnet 301 of the S-pole buffer hopper 300 from the transfer channels 904 into the conveying channel 501.

[0045] Each slot can dock with the first end of the conveying channel 501. The rotating sorting tray 400 can rotate so that multiple slots 401 dock with the first end of the conveying channel 501 in sequence. When the current slot 401 docks with the first end of the conveying channel 501, the telescopic rod of the corresponding third telescopic cylinder pushes the N-pole permanent magnet 201 or the S-pole permanent magnet 301 from the transfer channel 904 into the conveying channel 501. The first telescopic rod 502 can extend to output the N-pole permanent magnet 201 or the S-pole permanent magnet 301 from the first end of the conveying channel 501 into the current slot 401.

[0046] In the embodiments of this application, as an example, the permanent magnets in the conveying channel 501 can be conveyed to the card slot 401 in a preset sequence of N→S→N→S… or N→N→N→S→S→S→N→N→N… The following description of this application will use the example of permanent magnets being output sequentially in a preset sequence (such as N→S→N→S…) as an example.

[0047] like Figure 1 As shown, multiple slots 401 are divided into alternating N-pole slots and S-pole slots. The discharge ports of the N-pole buffer hopper 200 and the S-pole buffer hopper 300 alternately feed permanent magnets into the conveying channel 501. When the N-pole slot is currently connected to the first end of the conveying channel 501, the telescopic rod of the corresponding third telescopic cylinder pushes the N-pole permanent magnet 201 from the outlet of the N-pole buffer hopper 200 through the transfer channel 904 into the conveying channel 501. The first telescopic rod 502 extends to output the N-pole permanent magnet 201 from the first end of the conveying channel 501 into the current N-pole slot. When the S-pole slot is currently connected to the first end of the conveying channel 501, the telescopic rod of the corresponding third telescopic cylinder pushes the S-pole permanent magnet 301 from the outlet of the S-pole buffer hopper 300 through the transfer channel 904 into the conveying channel 501. The first telescopic rod 502 extends to output the S-pole permanent magnet 301 from the first end of the conveying channel 501 into the current S-pole slot.

[0048] Therefore, when the rotary sorting tray 400 rotates for the first time, if the N pole slot rotates to the predetermined feeding position and aligns with the first end of the conveying channel 501, the controller will first control the N pole buffer hopper 200 to feed the N pole permanent magnet 201 into the conveying channel 501. After that, the N pole buffer hopper 200 and the S pole buffer hopper 300 will alternately feed permanent magnets into the conveying channel 501.

[0049] Furthermore, in the embodiments of this application, such as Figure 1 As shown, the permanent magnet feeding device of this application also includes a feeding bin 100, an N-pole Hall sensor 601, and an S-pole Hall sensor 602.

[0050] The feeding hopper 100 is pre-stored with a mixture of N-pole permanent magnets 201 and S-pole permanent magnets 301. The feeding hopper 100 is connected to the inlet of the N-pole buffer hopper 200 and the inlet of the S-pole buffer hopper 300 through two sorting channels. Technicians can manually or through automated equipment sort the mixed N-pole permanent magnets 201 and S-pole permanent magnets 301 in the feeding hopper 100 to the N-pole buffer hopper 200 and the S-pole buffer hopper 300.

[0051] The N-pole Hall sensor 601 is installed at the outlet of the N-pole buffer hopper 200 (e.g., Figure 5As shown, it can be installed at the outlet of the transfer channel 904 corresponding to the conveying channel 501. When the N-pole buffer hopper 200 discharges the N-pole permanent magnet 201 into the conveying channel 501, the N-pole Hall sensor 601 detects the N-pole permanent magnet 201 being discharged from the outlet of the N-pole buffer hopper 200. If the detection result indicates N-pole polarity, the first telescopic rod 502 extends; if the detection result indicates non-N-pole polarity, the controller issues an alarm signal. The S-pole Hall sensor 602 is installed at the outlet of the S-pole buffer hopper 300 (e.g., ...). Figure 5 As shown, it can be installed at the position corresponding to the outlet of the transfer channel 904 in the conveying channel 501. When the discharge port of the S-pole buffer hopper 300 conveys the S-pole permanent magnet 301 into the conveying channel 501, the S-pole Hall sensor 602 detects the S-pole permanent magnet 301 conveyed by the discharge port of the S-pole buffer hopper 300. If the detection result shows the polarity as S-pole, the first telescopic rod 502 extends. If the detection result shows the polarity as S-pole, the controller issues an alarm signal.

[0052] This design avoids incorrect sorting of permanent magnets in the N-pole buffer hopper 200 and the S-pole buffer hopper 300, which could lead to the N-pole and S-pole slots being installed with the magnetic poles reversed, such as mistakenly installing the S-pole in the position designed for the N-pole.

[0053] In the embodiments of this application, the Hall sensor can be replaced by a fluxgate sensor, which is arranged at a fixed position in the detection station. By detecting the strength and direction of the magnetic field generated by the permanent magnet (the output voltage of the Hall element is positively correlated with the polarity of the magnetic field), it is determined whether the current permanent magnet is an N pole or a S pole. In addition, the triggering mechanism of the counting sensor 801 is that the permanent magnet blocks the optocoupler / triggers the micro switch when it passes by.

[0054] Furthermore, in the embodiments of this application, such as Figure 5As shown, each N-pole slot is equipped with an S-pole magnet of opposite polarity, and each S-pole slot is equipped with an N-pole magnet of opposite polarity. In practice, magnets of opposite polarity 802 can be installed on the side wall of slot 401. When a permanent magnet approaches, according to the principle of like poles repelling and unlike poles attracting, the permanent magnet will be attracted to slot 401. If it cannot be attracted, it indicates that the permanent magnet is in the wrong orientation, and the permanent magnet flowing from the outlet of the buffer hopper to slot 401 will be ejected. At this time, the counting sensor 801 cannot detect that the permanent magnet in slot 401 is in place (i.e., it does not exist), and the controller sends an alarm signal. This setting can compensate for installation errors caused by a malfunction of the Hall sensor. It should be noted that the installation position of the counting sensor 801 can follow a principle: if the permanent magnet flowing from the outlet of the buffer hopper to the slot 401 is ejected, the counting sensor 801 cannot detect that the permanent magnet in the slot 401 is in place. If the permanent magnet flowing from the outlet of the buffer hopper to the slot 401 is not ejected, the counting sensor 801 can detect that the permanent magnet in the slot 401 is in place.

[0055] In the embodiments of this application, such as Figure 1 As shown, the conveying mechanism also includes a first telescopic cylinder 503, which includes a first telescopic rod 502. When the current slot 401 is aligned with the beginning of the conveying channel 501, and the first telescopic rod 502 extends (i.e., after the first telescopic cylinder 503 is detected to have moved once), if the counting sensor 801 detects that the permanent magnet in the current slot 401 is not in position, the controller issues an alarm signal.

[0056] In addition, the controller pre-stores the total number of slots. When the number of arrival signals received by the controller from the counting sensor 801 reaches the total number of slots, it indicates that all slots 401 on the rotary sorting tray 400 are filled with permanent magnets. The controller then controls the rotary sorting tray 400 to rotate so that the slots 401 on the rotary sorting tray 400 correspond to the positions of the permanent magnet mounting parts on the motor rotor 903. Afterwards, the permanent magnets in the multiple slots 401 are transferred one by one to the multiple permanent magnet mounting parts on the motor rotor 903.

[0057] In the specific transfer, such as Figure 3 and Figure 5As shown, the permanent magnet feeding device of this application also includes a pressing mechanism 901 and a second telescopic cylinder 902. The pressing mechanism 901 is positioned above the rotary sorting disc 400, and the second telescopic cylinder 902 is positioned above and connected to the pressing mechanism 901. The rotary sorting disc 400 is positioned above the motor rotor 903, with an open lower portion of the slot 401 (i.e., an open lower portion of the permanent magnet 403, i.e., a through hole, not shown in the figure). When the slot 401 on the rotary sorting disc 400 corresponds to the position of the permanent magnet mounting portion on the motor rotor 903, the second telescopic cylinder 902 drives the pressing mechanism 901 to press the permanent magnet 403 in the slot 401 into the permanent magnet mounting portion of the motor rotor 903. In other words, after the controller determines that the number of permanent magnets 403 and the position of the rotating sorting disk 400 are accurate, the rotating sorting disk 400 and the motor rotor 903 are positioned through the pin hole 402 (positioning pin). The second telescopic cylinder 902 performs a telescopic action, driving the pressing mechanism 901 to move downward and pressing the permanent magnets 403 into the magnetic groove of the motor rotor 903.

[0058] Furthermore, in the embodiments of this application, such as Figure 1 , Figure 2 and Figure 5 As shown, the permanent magnet feeding device also includes a motor 701 and a connecting gear 702. The conveying end of the motor 701 is connected to the connecting gear 702, and the inner side of the rotating sorting disk 400 is provided with internal teeth 703, which mesh with the connecting gear 702. As an example, the motor 701 is a stepper motor or a servo motor. With this configuration, the power flow is: motor 701 - connecting gear 702 - internal teeth 703 - rotating sorting disk 400, and since the motor is a stepper motor or a servo motor, the control of the rotating sorting disk 400 is more precise.

[0059] The core steps of this application are as follows: Material preparation: Pour the permanent magnets to be tested (without distinguishing magnetic poles) into the feeding hopper and start the device.

[0060] Single-piece conveying: The material is screened and then enters the buffer hopper.

[0061] Magnetic pole detection: Hall sensor detects the direction of the magnetic field (N / S pole) of the current permanent magnet.

[0062] Result judgment: The controller compares whether the magnetic poles match the expected sequence.

[0063] Sorting and temporary storage: Qualified permanent magnets are pushed to the corresponding magnetic pole slots of the rotating sorting tray 400 (N pole → N slot, S pole → S slot), and the counting sensor 801 accumulates the quantity.

[0064] Sequential feeding: According to the rotor assembly process (such as NS alternation), control the rotation of the rotary sorting tray 400 to transport the permanent magnet of the target magnetic pole to the corresponding slot of the rotary sorting tray 400.

[0065] Precise installation: The rotary sorting tray 400 is rotated by a motor and positioned in the rotor magnet slot, and then pressed and fixed using a cylinder device.

[0066] Verification complete: The process ends when the total number of loaded materials reaches the target number; if there are any missing materials (insufficient quantity) or incorrect magnetic poles, the machine will stop, alarm, and prompt manual intervention.

[0067] As an example, this application applies to flywheel energy storage motor rotors with cylindrical permanent magnets.

[0068] Permanent magnet parameters: dimensions φ20mm×5mm, magnetic pole direction is radial (N pole facing outward or S pole facing outward), the rotor needs to be equipped with 24 permanent magnets (NS alternating arrangement).

[0069] Detection module: A linear Hall sensor (sensitivity ±0.1mV / Gs) is used, which is placed on a fixed bracket at the detection station. When the permanent magnet passes by, the sensor output voltage range is: +5V~+10V for the N pole (magnetic field strength ≥0.5T) and -5V~-10V for the S pole (magnetic field strength ≤-0.5T). The counting sensor 801 is a through-beam photoelectric switch (detects the moment the permanent magnet passes by).

[0070] Sorting and feeding module: The rotary sorting tray is equipped with 12 N slots and 12 S slots (corresponding to the maximum requirement of 24 magnets). The rotary sorting tray is driven by a stepper motor (step angle 15°). Each rotation aligns the slot of the target magnetic pole with the entrance of the conveyor channel.

[0071] Control logic: The controller pre-stores the rotor magnetic pole sequence (1st N pole → 2nd S pole → … → 36th S pole). After the number of permanent magnets on the rotating sorting tray is reached, the rotating sorting tray is rotated to the permanent magnet mounting position by the motor and positioned. The second telescopic cylinder 902 is used to push and press the permanent magnet into place.

[0072] As an example, this application applies to high-speed motor rotors with square permanent magnets.

[0073] Improvement: For square permanent magnets measuring 25mm × 25mm × 3mm, opposite-pole magnets are installed on the side wall of the rotating sorting tray. When the permanent magnet approaches, it will be attracted to the rotating sorting tray according to the principle that like poles repel and unlike poles attract. If it cannot be attracted, it indicates that the permanent magnet is oriented incorrectly. This improvement can compensate for installation errors caused by a malfunction of the Hall sensor.

[0074] The advantages are as follows: Precise magnetic pole detection: The magnetic field direction of the permanent magnet is directly measured by a Hall sensor (without relying on manual visual inspection or marking), and the detection accuracy can reach ±1° (magnetic pole angle deviation), which is far more reliable than manual judgment. Automation: The entire process from permanent magnet feeding → inspection → sorting → feeding requires no manual intervention and is compatible with high-speed continuous production (20~50 permanent magnets can be processed per minute).

[0075] Intelligent error prevention mechanism: Real-time comparison of magnetic pole sequence with target quantity. Once reversed installation (magnetic pole error), missing installation (insufficient quantity), or excessive installation (excessive quantity) is detected, the machine will immediately stop, alarm, and record abnormal data for easy traceability.

[0076] Flexible adaptability: By adjusting the preset program of the control unit, it can adapt to different magnetic pole arrangement rules (such as NSNS alternation, customized polarity sequence) and various permanent magnet sizes (round / square / irregular shape).

[0077] Completely solves the pain points of manual installation: eliminates the problem of reverse installation caused by invisible magnetic poles (traditional manual installation error rate 5%~10% → this device's installation error rate <0.01%), and avoids motor performance failure caused by missing parts.

[0078] Improve production efficiency: Automated feeding is 3 to 5 times faster than manual feeding (manually processing about 50 pieces per hour → this device processes 100 to 200 pieces per hour), and supports 24-hour continuous operation; Reduce costs: Reduce material waste caused by rework / scrap (missing parts or installing them backwards requires disassembly and reassembly, with rework costs of approximately 5,000 to 10,000 yuan per rotor), while also reducing manpower requirements (one unit can replace 2 to 3 skilled workers). High quality consistency: The testing and loading process of all permanent magnets is controlled by the same set of standard procedures to ensure that the magnetic pole arrangement of each rotor is completely consistent, thereby improving the overall reliability of the flywheel energy storage system.

[0079] In summary, the permanent magnet feeding device of this application accurately identifies the magnetic pole direction (N / S pole) of the permanent magnet and verifies the target quantity through an automated detection and feeding process. It then transports the permanent magnets to the designated installation position of the motor rotor in a preset order, thereby completely avoiding the problem of reversed or missing magnetic poles during manual installation and improving the assembly quality and production efficiency of the motor rotor.

[0080] The permanent magnet feeding device of this application is suitable for the detection of the magnetic pole direction, quantity verification and automated feeding process of permanent magnets of high-precision motor rotors in large-scale flywheel energy storage equipment. It can effectively solve the technical problems of reversed or missing magnetic poles during manual installation.

[0081] According to a second aspect of this application, a flywheel energy storage device is provided, including a permanent magnet feeding device as described above, and the flywheel energy storage device further includes a motor rotor.

[0082] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.

Claims

1. A permanent magnet feeding device, characterized in that, Includes N-pole buffer hopper, S-pole buffer hopper, conveying mechanism, rotary sorting tray, counting sensor and controller; The N-pole buffer hopper stores multiple N-pole permanent magnets and is equipped with a discharge port; the S-pole buffer hopper stores multiple S-pole permanent magnets and is equipped with a discharge port. The rotating sorting tray has multiple slots arranged in the circumferential direction, and the rotating sorting tray can rotate so that the multiple slots sequentially reach the predetermined feeding position. When the current slot reaches the predetermined feeding position, the conveying mechanism can convey the N-pole permanent magnet or the S-pole permanent magnet from the outlet of the N-pole buffer hopper or the S-pole buffer hopper into the current slot. The counting sensor is fixed at a predetermined feeding position. When the rotating sorting tray drives the current card slot to rotate to the predetermined feeding position, the counting sensor can detect whether the permanent magnet in the current card slot is in place. If the permanent magnet is in place, the counting sensor sends a position signal to the controller, and the controller accumulates the count. If the permanent magnet is not in place, the controller issues an alarm signal. The number of slots on the rotating sorting tray is equal to the number of permanent magnet mounting parts on the motor rotor, and they correspond one-to-one. The permanent magnets in the multiple slots can be transferred to the multiple permanent magnet mounting parts accordingly.

2. The permanent magnet feeding device according to claim 1, characterized in that, The conveying mechanism includes a conveying channel and a first telescopic rod; The discharge ports of the N-pole buffer hopper and the S-pole buffer hopper are both connected to the conveying channel. The end of the conveying channel is connected to the first telescopic rod, which can extend to output the N-pole permanent magnet or the S-pole permanent magnet from the beginning of the conveying channel. Each of the slots can dock with the beginning of the conveyor channel, and the rotary sorting tray can rotate so that the multiple slots dock with the beginning of the conveyor channel in sequence. When the current slot is connected to the first end of the conveying channel, the first telescopic rod can extend to output the N-pole permanent magnet or the S-pole permanent magnet in the conveying channel from the first end of the conveying channel into the current slot.

3. The permanent magnet feeding device according to claim 2, characterized in that, The multiple slots are divided into alternating N-pole slots and S-pole slots, and the outlets of the N-pole buffer hopper and the S-pole buffer hopper alternately feed permanent magnets into the conveying channel. When the N-pole slot is connected to the first end of the conveying channel, the outlet of the N-pole buffer hopper conveys the N-pole permanent magnet into the conveying channel, and the first telescopic rod extends to output the N-pole permanent magnet from the first end of the conveying channel to the current N-pole slot. When the S-pole slot is connected to the first end of the conveying channel, the discharge port of the S-pole buffer hopper conveys the S-pole permanent magnet into the conveying channel, and the first telescopic rod extends to output the S-pole permanent magnet from the first end of the conveying channel into the current S-pole slot.

4. The permanent magnet feeding device according to claim 3, characterized in that, The permanent magnet feeding device also includes an N-pole Hall sensor and an S-pole Hall sensor; The N-pole Hall sensor is installed at the outlet of the N-pole buffer hopper. When the N-pole permanent magnet is conveyed into the conveying channel from the outlet of the N-pole buffer hopper, the N-pole Hall sensor detects the N-pole permanent magnet conveyed from the outlet of the N-pole buffer hopper. If the detection result indicates that the polarity is N, the first telescopic rod extends. If the detection result indicates that the polarity is not N, the controller issues an alarm signal. The S-pole Hall sensor is installed at the discharge port of the S-pole buffer hopper. When the S-pole permanent magnet is conveyed into the conveying channel from the discharge port of the S-pole buffer hopper, the S-pole Hall sensor detects the S-pole permanent magnet conveyed from the discharge port of the S-pole buffer hopper. If the detection result indicates that the polarity is S-pole, the first telescopic rod extends. If the detection result indicates that the polarity is not S-pole, the controller issues an alarm signal.

5. The permanent magnet feeding device according to claim 3, characterized in that, Each of the N-pole slots is equipped with an S-pole magnet of opposite polarity, and each of the S-pole slots is equipped with an N-pole magnet of opposite polarity.

6. The permanent magnet feeding device according to claim 1, characterized in that, The permanent magnet feeding device also includes a motor and connecting gears; the inner side of the rotating sorting disc is provided with internal teeth; The motor's transmission end is connected to the connecting gear, which meshes with the internal gear. The motor is a stepper motor or a servo motor.

7. The permanent magnet feeding device according to claim 2, characterized in that, The conveying mechanism further includes a first telescopic cylinder, which includes the first telescopic rod; The current card slot is connected to the first end of the conveying channel, and after the first telescopic rod extends, if the counting sensor detects that the permanent magnet in the current card slot is not in place, the controller will issue an alarm signal.

8. The permanent magnet feeding device according to claim 1, characterized in that, The controller pre-stores the total number of card slots; When the number of arrival signals received by the controller from the counting sensor reaches the total number of slots, the controller controls the rotating sorting disk to rotate so that the slots on the rotating sorting disk correspond to the positions of the permanent magnet mounting parts on the motor rotor.

9. The permanent magnet feeding device according to claim 1, characterized in that, The permanent magnet feeding device also includes a pressing mechanism and a second telescopic cylinder; The pressing mechanism is located above the rotary sorting disc, the second telescopic cylinder is located above the pressing mechanism and connected to the pressing mechanism, and the rotary sorting disc is located above the motor rotor; The slot is open at the bottom. When the slot on the rotating sorting tray corresponds to the position of the permanent magnet mounting part on the motor rotor, the second telescopic cylinder drives the pressing mechanism to press the permanent magnet in the slot into the permanent magnet mounting part of the motor rotor.

10. A flywheel energy storage device, characterized in that, The flywheel energy storage device includes the permanent magnet feeding device as described in any one of claims 1-9, and further includes the motor rotor.

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