Rotor of a rotating electric machine, manufacturing process and corresponding rotating electric machine

Abstract

The invention relates to a rotor (100) provided with injection fixing bars having a function pin (400) formed in one piece and comprising a bar (410) and two or more function pins (420). The function pin comprises one or more fixing areas (421) for the binding of one or more rotor (100) packages of the plates (300) of the rotor (100). The invention further relates to a process method for manufacturing a rotor (100) and to a rotary electric machine comprising a rotor (100) according to the invention.

Description

Technical Field

[0001] This invention relates to the field of rotating electrical machines, and more particularly to methods for manufacturing and assembling synchronous motors provided with reluctance or permanent magnet rotors, especially to the field of rotor concentration within the stator and the fixation, balancing, cooling and / or ventilation of the plate package. Background Technology

[0002] Rotating electrical machines are devices used to convert electrical energy into mechanical energy when used in engines, and vice versa when used in generators. Basically, they consist of four basic structures: housing, stator, rotor, and bearings / covers.

[0003] The housing is the component responsible for integrating the additional structures, housing the stator and rotor.

[0004] In the case of an engine, the stator is an active (energized) static component responsible for conducting magnetic flux to rotate the rotor, and in the case of a generator, the stator is an active (energized) static component responsible for conducting energy generated by the rotor, while the rotor is an active (energized) rotating component of the rotating motor.

[0005] Bearings and covers are components responsible for coupling static parts to the rotating parts of a rotating electrical machine.

[0006] In addition to these components, depending on the different characteristics of each rotating electric machine, there may also be auxiliary systems, such as auxiliary systems for excitation, cooling, lubrication, etc.

[0007] On the other hand, the rotor is basically composed of a shaft on which plate encapsulations or plates are arranged, and magnetic poles that can protrude or not are mounted on the rotor. In the case of a synchronous engine, there is the possibility of fixing cooling and / or ventilation elements such as fans or fins to one or both ends.

[0008] In a plate package, the plates are typically held together by welds and / or fasteners (e.g., screws, pins, clamps, etc.). This is necessary for forming a plate package that is appropriately constructed to withstand the engine's operating conditions, such as centrifugal forces, temperature, and other factors that may affect and impair the dimensional stability of the rotor assembly.

[0009] In the engine with properties addressed in this paper, the magnetic poles acting as permanent magnets can be mounted in through holes or longitudinal slots, parallel to the rotor shaft. These openings can be formed in the rotor plate package or in elements provided with openings or slots, which are externally coupled to the plate.

[0010] The concentration of the rotor inside the stator of a rotating electric machine is implemented by bearings and / or covers, and its balance can be achieved by removing mass or adding mass to a specific location. Summary of the Invention

[0011] In the prior art, there are several solutions for manufacturing and assembling rotors, as well as mounting plates, thus forming rotor plate packages. Each of these solutions aims to combine robustness with reduced manufacturing time and cost.

[0012] An example is patent document CN208423973, which discloses and describes a typical engine structure with properties addressed herein, using pressure plates and screws to secure the rotor. This is a clear drawback because it not only adds unnecessary mass to the rotor but also interferes with the engine's electrical and magnetic field characteristics, particularly impairing its performance. Furthermore, it involves a complex structure requiring several assembly steps, where balancing remains a time-consuming task.

[0013] Patent document CN106487129 describes another solution in the prior art, which describes an electric motor with a rotor including short-circuit rings that function to dampen the windings by forming an aluminum cage. Again, the disadvantages of patent document CN208423973 described above are repeated.

[0014] Patent document KR101084354 discloses and details an electric motor rotor in which an aluminum rod is inserted into a groove (not injected) and short-circuited by welded aluminum sheets to form a cage-like device that acts as a damper. In this case, the drawbacks of the previously discussed documents are repeated, where a structure with multiple components is coupled to the welded plates and cage assembly; balancing remains a time-consuming step, thus increasing manufacturing costs and impacting the time and complexity for assembling the structure. Furthermore, the motor according to KR101084354 also includes a cooling fan and conventional ventilation, another component among many parts, requiring axial space in the rotor construction.

[0015] Finally, it is important to mention that existing technologies have also failed to describe components for securing magnets into their slots that are simple, characterized by a manufacturing process that will not thermally affect the rotor, have components (materials) that will not impede the electromagnetic properties of the rotor, and have a construction / assembly that will not add cumbersome steps to the rotor manufacturing / assembly.

[0016] As can be inferred from the above description, there is space and demand for an electric motor rotor solution with simple project and assembly, which can overcome the shortcomings of the prior art.

[0017] Therefore, one object of the present invention is to provide a rotor for a rotating electric motor, the rotor being provided with an injection fixing rod having functional pins, the injection fixing rod being integrally formed and including a rod and two or more functional pins, wherein the functional pins include two or more fixing regions for fixing and binding one or more plate packages of the rotor.

[0018] Another object of the present invention is to provide a process method for manufacturing the aforementioned rotor, comprising: stamping a plate having a central hole, peripheral holes, and slots; grouping and parallel aligning a plurality of plates having mutually aligned holes to form a plate package; arranging the plate package in a suitable injection tool provided with a cavity for receiving the plate package and a cavity for allowing the formation of the injection retaining rod having the functional pin; injecting an injectable material for forming the injection retaining rod having the functional pin, including filling the peripheral holes; pressing the shaft into the one or more plate packages by inserting a shaft through the central hole; and inserting a permanent magnet or a magnet-only material into the slots.

[0019] Another object of the present invention is to provide a rotary electric motor comprising the above-described rotor and manufactured by the above-described process.

[0020] Additional features and feature details are presented in the exemplary embodiments. Attached Figure Description

[0021] To better understand and visualize the objectives of this invention, the invention will now be described with reference to the accompanying drawings to illustrate the technical effects obtained through exemplary embodiments, which do not limit the scope of the invention, wherein, schematically:

[0022] Figure 1 A perspective view of a rotor according to the invention is shown, on which a shaft is mounted;

[0023] Figure 2 It shows Figure 1 A front view of a rotor that has no shaft;

[0024] Figure 3 It shows Figure 2 Side view of section AA;

[0025] Figure 3a It shows Figure 3 Front view of a partial cross-section of the fixed and counterweight bars;

[0026] Figure 3b It shows Figure 3 The side view of detail B;

[0027] Figure 3cA partial side view of a retaining rod is shown, which has a simple functional pin that inserts into the board package.

[0028] Figure 3d A side view of a fixing rod with a simple functional pin according to the present invention is shown.

[0029] Figure 4 A front view of the rotor plate according to the present invention is shown;

[0030] Figure 5 A perspective view of a rotor according to the invention is shown, on which a shaft is mounted;

[0031] Figure 6 It shows Figure 5 A front view of the rotor, on which no shaft is mounted;

[0032] Figure 7 It shows Figure 6 A side view of section AA; and

[0033] Figure 8 This shows an exploded perspective view of a rotor with more than one plate package arranged on its shaft.

[0034] Figure 9 The image shows a partial perspective view of a rotor according to the invention, which is provided with functional pins that, prior to mechanical deformation, perform actions such as securing and binding the plates in the package, cooling the magnets, balancing, and axially holding them by means of rods; these rods are straight.

[0035] Figure 10 Presented Figure 9 A partial front view of the rotor, showing the rod in its final state of mechanical deformation; and

[0036] Figure 11 It shows Figure 10 A partial front view of the rotor. Detailed Implementation

[0037] The present invention relates to a rotor (100) comprising a shaft (200), one or more plate packages (300), an injection fixing rod having a functional pin (400) and a permanent magnet or simply a magnet (500).

[0038] The shaft (200) of the rotor (100) according to the invention is a shaft (200) known from the prior art and is of the type commonly used in applications of rotating electric machines.

[0039] like Figure 2 , Figure 3 , Figure 3b , Figure 4 and Figure 6As shown, the plate package (300) of the rotor (100) according to the invention is formed of a plurality of plates (310) made of materials suitable for the nature of the electric motors dealt with herein, materials known in the prior art, each plate (310) substantially and non-limitingly having a central hole (320), peripheral through holes (330), and through holes for magnets or slots (340), and there may be one or more equal or different plate packages (300) that are equal or different from each other and are arranged in the same shaft (200).

[0040] The center hole (320) allows the insertion of the shaft (200) and may include additional openings for passing through the pins and other components, if necessary.

[0041] The peripheral holes (330) are arranged at locations with low magnetic flux density.

[0042] The plate (310) is manufactured by means and processes known from the prior art, and these means and processes are common to the rotating motors of the nature dealt with herein, which may be exemplified, but not limited to, stamping, mechanical cutting, laser cutting, injection, casting, sintering, and other suitable related processes.

[0043] The board package (300) is formed by grouping and parallel aligning multiple boards (310), wherein holes (320, 330, 340) are aligned with each other to form the board package (300), the board package (300) is arranged in a suitable injection tool provided with a cavity for receiving the board package (300) and a cavity that allows for the formation of or from channels through which the channels are formed by the alignment of peripheral holes (330) of injection retainers having functional pins (400) that bind the assembly together without the need for short-circuit rings, welds, screws, and other fixing elements.

[0044] The injection fixing rod with functional pins (400) according to the invention is a full-length element (C), integrally formed, injected into a peripheral hole (330), comprising a body or rod (410) that is completely filled by aligning the peripheral hole (330) and the channel formed by two or more end pins (420) that extend beyond the surface of the plate (310) of the plate package (300).

[0045] The material used for injecting the injection retaining rod with the functional pin (400) should be an injectable material, preferably, but not limited to, one or more of aluminum and / or its alloys.

[0046] The injection retaining rod with the functional pin (400) must be understood as a multifunctional element that can present a geometry and construction suitable for performing several functions and / or serving as an additional accessory or part.

[0047] The functional pins (420) and rods (410) perform the primary function of binding one or more board packages (300), wherein a simplified version of the functional pins (420) may take any shape suitable for holding the board (310) according to the board package (300), these shapes are preferably cylindrical and have two or more fixing regions (421), wherein the fixing height (a) and fixing diameter (D) are greater than or equal to the body diameter (d) of the rod (410), such as Figure 3 , Figure 3a , Figure 3c and Figure 3d As shown. It is important to note that the rod (410), the functional pin (420), and the fixing area (421) can have shapes other than cylindrical, such as, but not limited to, polygons, ellipses, rectangles, and other related shapes. In this case, the diameter (D, d) should be considered as the maximum external dimension.

[0048] In a non-limiting embodiment of the invention, the functional pins (420) are used for balancing the rotor (100), wherein each functional pin (420) has a height (A), including one or more fixed regions (421) having a fixed diameter (D) and a fixed height (a), and one or more balancing regions (422) having a diameter (dc) less than or equal to the fixed diameter (D), and decreasing as it leaves the board package (300), such as Figure 3 and Figure 3a As shown. It is important to note that, depending on the project, the balance area (422) can have several shapes, such as, but not limited to: cylindrical, conical, truncated, polygonal, elliptical, rectangular, and other similar shapes.

[0049] The rod (410) has a length (c) equal to or slightly longer than the length (longitudinal measurement) of the plate package (300), and a body diameter (d) equal to the diameter of the peripheral holes (330), since it completely fills these peripheral holes. The body diameter (d) is less than or equal to the fixed diameter (D), preferably smaller, thus forming a contact surface (S) equal to the difference between the cross-sectional surface in the region of the fixed diameter (D) and the cross-sectional surface in the region of the body diameter (d), which is slightly larger to up to 10 times larger, preferably up to 2 to 5 times larger, and most preferably up to 3 to 4 times larger than the total cross-sectional surface in the region of the body diameter (d). This structure allows the plate package (300) to be fixed and bound between the contact surfaces (S). Additionally, and as an aside, even if the diameters (d, D) are equal, there is no contact surface (S) in this case, as at least a minimum binding of the plates (310) will exist due to the internal roughness generated by stacking the plates (310) in the peripheral holes (330).

[0050] It should be noted that this dimensional relationship may vary depending on the characteristics of the project, the expected number of injection fixing rods with functional pins (400), and their body diameter (d) to resist forces generated from the rotation of the motor and to withstand shear stress in the boundary region between the rod (410) and the pin (420). A safe but non-restrictive ratio between the diameters (D, d) is established when the fixing diameter (D) does not exceed 3.5 times the body diameter (d), wherein the body diameter (d) must represent 2% to 30% of the outer diameter (DR) of the rotor (100), preferably 5%.

[0051] It should also be noted that the rod (410) and the functional pin (420) do not need to be coaxial, as there may be eccentricity between their longitudinal axes according to the project specifications, for example, to achieve the arrangement of the peripheral hole (330) closest to the outer perimeter of the rotor (100) to keep the size of the contact surface (S) constant, thereby reducing interference in the magnetic flux without compromising the fixation guaranteed by the contact surface (S).

[0052] The balancing region (422) then allows mass to be added to the rotor (100). A non-limiting example of mass addition is the arrangement of washers or the like on the balancing region (422), wherein the washers or the like slide on the balancing region (422) until they contact the surface of the stationary region (421). Once this is done, pressure is applied to the empty portion of the conical region, causing the washers or the like to be squeezed and trapped.

[0053] It should be noted that, depending on the assembly conditions, this operation may be unnecessary or necessary in cases where a single washer or similar material is applied at a single location, or in cases where one or more washers or similar materials are applied at a single location or more than one location. The washer or similar material can be any suitable material.

[0054] The number of retaining rods with functional pins (400) depends on the characteristics of the project, the size of the rotor (100), the expected rotation of the motor, and other relevant characteristics.

[0055] For the attachment, securing, and binding of one or more plate packages (300) and the balancing of the rotor (100), this forming of the rotor (100) package with an injection retaining rod having a functional pin (400) forms a rigid package that can withstand all forces foreseeable for its application, eliminates the need for soldering and external fixing elements, and eliminates the need for end plates and short-circuit rings for balancing the rotor (100).

[0056] A single injection retaining rod with a functional pin (400) can perform different functions through different functional pins (420). A non-limiting example within the scope of the invention is the use in one end (410) of a functional pin (420) having a simple retaining area (421) for binding, and in another end (410) of a functional pin (420) having a retaining area (421) for binding and a balancing area (422) for balancing.

[0057] In another non-limiting embodiment of the invention, the functional pin (420) is used for binding and balancing, as well as for internal ventilation and / or cooling of the engine, wherein cooling and / or ventilation fins, or simply fins (430) (having dimensions and shapes suitable for the intended cooling and / or ventilation conditions), are added to the functional pin (420), as... Figures 5 to 7 As shown.

[0058] It is important to emphasize the multi-functionality of each rod end (410) here, which means that a single rod (410) may have an end for binding and balancing, and another end for binding and cooling and / or ventilation.

[0059] In yet another non-limiting embodiment of the invention, the functional pin (420) has a simple geometry whose sole purpose is to secure the cooling and ventilation fins, or simply the fins (430), wherein it may perform binding to one end of a single rod (410) and / or cooling and / or ventilation to the other end of a single rod (410).

[0060] In another non-limiting embodiment of the invention, in addition to the fixed region (421), the functional pin (420) also has one or more connecting regions (423) that act as connecting elements for one or more plate packages (300, 301, 302) arranged on the shaft (200), such as Figure 8 As shown, according to the description above, the rotor (100) is capable of supporting one or more equal or different board packages (300) depending on the rotary motor application.

[0061] Here, we have the same versatility condition for each rod end (410), which means that a single rod (410) can have one end for binding and another end for connecting one or more board packages (300).

[0062] In yet another non-limiting embodiment of the invention, the functional pin (420) is used to secure one or more plate packages (300, 301, 302) and to provide accompanying cooling and / or ventilation via fins (430), as well as axial retention of the magnet (500), wherein one or more bars (440) are added to the functional pin (420), for example, but not limited to, starting from a fixing region (421) extending radially around the magnet (500) along its direction. The bars (440) secure the magnet (500) within the slot (340) to prevent its axial translation, such as... Figure 10 and Figure 11 As specifically shown. This retention is outside the plate package (300), and therefore does not interfere with the electromagnetic properties of the rotor (100) except to eliminate the need for other methods of fixing the magnet (500), eliminate expensive assembly / processes for manufacturing, and serve as additional protection against extreme conditions (e.g., over-temperature, etc.).

[0063] The rod (440) can be manufactured as an element extending radially from the fixed region (421), but is not limited to the fixed region (421), such as Figure 9 As specifically shown, and after the magnets (500) are inserted into the slots (340), they can be mechanically deformed until they overlap with the slots (340) in which the magnets (500) are disposed. For this embodiment, the versatility of each rod end (410) is also effective.

[0064] In yet another non-limiting embodiment of the invention, the functional pin (420) has a simple geometry and is intended to secure accessories or additional parts, such as sensors, position markers, and other suitable elements, wherein different ends may perform different functions as described above.

[0065] Therefore, the functional pin (420) can perform one or more of the functions described above, either individually or together, wherein the two ends can perform the same function or different functions.

[0066] The versatility of the functional pins (420) allows for the performance of one or more functions in a single injection fixing rod (400) having functional pins, as well as the possibility of alternating radially or along the circumference of the rotor (100) between injection fixing rods having functional pins (400) performing different functions. A non-limiting example is alternating between injection fixing rods having functional pins (400) for binding and balancing and injection fixing rods having functional pins (400) for cooling and / or ventilation, etc. It is also possible to employ one or more injection fixing rods having functional pins (400) for the same or different functions, which may be adjacent or non-adjacent and / or grouped together or not grouped together. Another non-limiting example is the possibility of alternating injection fixing rods having functional pins (400) for binding and axial fixing of magnets with injection fixing rods having functional pins (400) for cooling and / or ventilation, etc. It is even possible to have one or more injection fixing rods with functional pins (400) having the same or different functions, being adjacent or not adjacent and / or grouped together or not grouped together.

[0067] The versatility of the additional pin (420) also allows for different functions to be performed in one or more board packages (300, 301, 302). Figure 8 A non-limiting example shows a first plate package (300) having functional pins (420) including fins (430) for cooling / ventilation, a fixing region (421) and a balancing region (422) in one end, and a fixing region (421) and a connecting region (423) in the other end. The plate packages are grouped in pairs and alternated with pairs of unfilled peripheral holes (330) such that the connecting regions (423) of the functional pins (420) of the second plate package (301) can be connected, etc.

[0068] Therefore, the functional pin (420) can perform the same or different functions at a single end, at different ends and perform the same or different functions, and in one or more board packages (300, 301, 302) and perform the same or different functions, whether individually or collectively.

[0069] The method of manufacturing a rotor (100) according to the present invention is a method of manufacturing a rotor (100) comprising: a shaft (200), one or more plate packages (300), an injection fixing rod having a functional pin (400) and a permanent magnet or simply a magnet (500).

[0070] This process includes the following steps:

[0071] i. A stamped plate (310) having a center hole (320), a peripheral hole (330) and a slot (340);

[0072] ii. Grouping and aligning multiple boards (310) with holes (320, 330, 340) aligned with each other to form a board package (300).

[0073] iii. Arrange the board package (300) in a suitable injection tool, which is provided with a cavity for receiving the board package (300) and a cavity for allowing the formation of an injection retaining rod with a functional pin (400);

[0074] iv. Injecting injectable material to form an injection retaining rod with a functional pin (400), including filling the peripheral hole (330).

[0075] v. Insert the shaft (200) through the through-center hole (320) and press the shaft (200) into one or more board packages (300);

[0076] vi. Insert the magnet (500) into the slot (340).

[0077] When the functional pin (420) is used for balancing the rotor (100), the manufacturing process according to the present invention may further include additional process steps, as follows:

[0078] vii. The balancing rotor is added using the possible mass by arranging one or more washers or similar objects on the balancing region (422) and squeezing the empty portion of the balancing region (422) to capture the washers or similar objects.

[0079] When the functional pin (420) is used for axial fixation of the magnet (500), the manufacturing process according to the present invention may further include additional process steps, as follows:

[0080] viii. Promote the mechanical deformation of the rod (440) until it overlaps with the slot (340) in which the magnet (500) is disposed.

[0081] It should be noted that when the functional pin (420) is used to balance the axial fixation of the rotor (100) and the magnet (500), the process method will include two corresponding additional steps as described above.

[0082] The manufacturing process method according to the present invention has significant and influential differences regarding equivalent steps in the prior art process for manufacturing rotors.

[0083] Compared to the time required for equivalent steps in the prior art, the time required to perform steps ii, iii, and iv of the present invention is reduced by up to 90% because there is no need for press-in or soldering of the plate package (300). In other words, the process method of the present invention does not include the press-in and soldering steps found in the prior art.

[0084] In addition to eliminating the need for additional short-circuit rings, the presence of the injection retaining rod with the functional pin (400) also eliminates the use of: balance discs, external components for cooling and / or ventilation, and retaining elements in the plate's package. That is, the process method of the present invention does not include the steps of assembling and pressing in short-circuit rings and / or balance discs, nor does it include the step of inserting retaining elements into the plate's package or heat sink.

[0085] Compared to the time required for the same steps in the prior art, the time required to perform step vii of the present invention is reduced by approximately 70%, because it only requires inserting one or more washers or the like into the balance region (422) and squeezing them until the washers or the like are retained and stabilized.

[0086] In this way, the process method according to the invention for manufacturing the rotor (100) according to the invention greatly reduces the manufacturing time of the rotor of the nature addressed herein by eliminating the use of welding machinery, robots, etc., reduces material and labor costs, increases productivity, requires fewer steps, and optimizes manufacturing capabilities. It should be noted that, before and after the steps described above, the process method according to the invention may have other accompanying steps depending on the technical knowledge and manufacturing practice required for the construction of the rotor of the rotating electric machine.

[0087] The rotary electric motor according to the present invention is an electric motor having a rotor (100) according to the present invention, manufactured by the process method according to the present invention.

[0088] It will be readily understood by those skilled in the art that modifications can be made to the invention without departing from the concept set forth in the foregoing description. Such modifications must be considered to be included within the scope of the invention. Therefore, the specific embodiments described in detail above are merely illustrative and exemplary, and are not restrictive in their scope; thus, the complete scope of the appended set of claims and any and all their correspondences should be given.

Claims

1. A rotor for a rotating electric motor, comprising: The board package (300) includes multiple boards, each board including a peripheral hole (330); as well as Multiple injection fixing rods, each injection fixing rod including a rod (410) and two functional pins (420) on opposite ends of the rod (410), the rod (410) and the two functional pins (420) being formed as a single piece by injection, wherein... Multiple channels are formed in the board package (300) by alignment of the peripheral holes (330) of the multiple boards, and each channel is filled by the rod (410); Each functional pin (420) includes a fixing region (421) for securing and binding the plate package (300), and at least one functional pin (420) includes a balancing region (422) adjacent to the fixing region (421), the balancing region (422) for adding mass to balance the rotor, the balancing region (422) and the fixing region (421) being integral, and the fixing region (421) being axially located between the balancing region (422) and the rod (410); and The rotor is not provided with short-circuit rings on either side of the plate package (300), and the functional pins (420) of each injection fixing rod on both sides of the plate package (300) are independent of each other.

2. The rotor according to claim 1, characterized in that... The two functional pins (420) perform one or more additional functions at the two ends of the one rod (410) of the injection fixing rod having the functional pins, the one or more additional functions being selected from the group consisting of the functions of cooling and connection, and the two functional pins (420) perform the same one or more additional functions.

3. The rotor according to claim 1, characterized in that, The equilibrium region (422) gradually shrinks from the fixed region (421).

4. The rotor according to claim 1, characterized in that, At least one of the two functional pins (420) further includes one or more fins (430) and / or one or more rods (440), the one or more fins (430) and / or one or more rods (440) being integral with the fixed region (421) of the at least one of the two functional pins (420).

5. The rotor according to claim 1, characterized in that, At least one of the two functional pins (420) further includes a connection region (423) for connecting the board package (300).

6. The rotor according to claim 5, characterized in that, At least one of the two functional pins (420) further includes one or more fins (430) and / or one or more rods (440), the one or more fins (430) and / or one or more rods (440) being integral with the fixed region (421) of the at least one of the two functional pins (420).

7. The rotor according to claim 1, characterized in that, The fixed area (421) of each of the two functional pins (420) has a fixed diameter (D), and each of the rods (410) has a body diameter (d) that is less than or equal to the fixed diameter (D).

8. The rotor according to claim 1, characterized in that, Each of the two functional pins (420) extends from the board package (300).

9. The rotor according to claim 1, characterized in that, Each of the plurality of plates includes a plurality of the peripheral holes (330).

10. The rotor according to claim 9, characterized in that, Multiple channels are formed by alignment of the multiple peripheral holes (330) of each of the plates in the plate package (300), wherein each of the multiple channels is filled by one of the rods (410) of the injection retaining rod having a functional pin.

11. The rotor according to claim 1, characterized in that, Each of the two functional pins (420) performs an additional function selected from the group consisting of the following functions: cooling and connection, and each of the two functional pins (420) performs a different additional function.

12. A rotating electric motor comprising a rotor according to any one of claims 1-11.

13. A rotor for a rotating electric motor, comprising: The board package (300) includes multiple boards, each board including a peripheral hole (330); as well as Multiple injection fixing rods with functional pins, wherein each of the injection fixing rods with functional pins includes a rod (410) and two functional pins (420) on opposite ends of the rod (410). The rod (410) and the two functional pins (420) are formed as a single unit; Each of the two functional pins (420) includes a fixing region (421) for securing and binding the rotor to the plate package (300), and at least one of the two functional pins (420) includes a balancing region (422) adjacent to the fixing region (421), the balancing region (422) being used to add mass for balancing the rotor, the balancing region (422) and the fixing region (421) being integral, and the fixing region (421) being axially located between the balancing region (422) and the rod (410); and Multiple board packages (300, 301, 302) are configured to be connected to each other via multiple injection retaining rods with functional pins in each of the multiple board packages (300, 301, 302), each board package having the functional pins (420) and multiple peripheral holes (330), wherein each adjacent board package (300, 301, 302) is connected together by inserting the respective functional pins (420) into the respective peripheral holes (330).

14. The rotor according to claim 13, characterized in that, The two functional pins (420) perform one or more additional functions at the two ends of the one rod (410) of the injection fixing rod having the functional pins, the one or more additional functions being selected from the group consisting of the functions of cooling and connection, and the two functional pins (420) perform the same one or more additional functions.

15. The rotor according to claim 13, characterized in that, The equilibrium region (422) gradually shrinks from the fixed region (421).

16. The rotor according to claim 15, characterized in that, At least one of the two functional pins (420) further includes one or more fins (430) and / or one or more rods (440), the one or more fins (430) and / or one or more rods (440) being integral with the fixed region (421) of the at least one of the two functional pins (420).

17. The rotor according to claim 13, characterized in that, At least one of the two functional pins (420) further includes a connection region (423) for connecting the board package (300).

18. The rotor according to claim 17, characterized in that, At least one of the two functional pins (420) further includes one or more fins (430) and / or one or more rods (440), the one or more fins (430) and / or one or more rods (440) being integral with the fixed region (421) of the at least one of the two functional pins (420).

19. The rotor according to claim 13, characterized in that, The fixed area (421) of each of the two functional pins (420) has a fixed diameter (D), and each of the rods (410) has a body diameter (d) that is less than or equal to the fixed diameter (D).

20. The rotor according to claim 13, characterized in that, Each of the two functional pins (420) extends from the board package (300).

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