CN219779384U - Collecting ring, electric energy conversion device and wind generating set - Google Patents

Abstract

The utility model relates to a collecting ring, an electric energy conversion device and a wind generating set, wherein the collecting ring is used for a first component, the first component comprises a rotating part and a fixing part which are in running fit, and the collecting ring comprises: the ring assembly comprises more than two slip rings which are coaxially arranged and distributed at intervals in the radial direction of the ring assembly, and each slip ring is connected with the rotating part in an insulating way; the brush assembly is arranged at one end of the ring assembly in the axial direction of the brush assembly, the brush assembly comprises more than two conductive brushes, one end of each slip ring in the axial direction is electrically contacted with at least one conductive brush, and the conductive brushes are in insulating connection with the fixing part. The collecting ring, the electric energy conversion device and the wind generating set provided by the embodiment of the utility model can meet the transmission requirements of power supply, signals and the like, and meanwhile, the collecting ring is compact in structure, small in size and high in space utilization rate.

Description

Collecting ring, electric energy conversion device and wind generating set

Technical Field

The utility model relates to the technical field of wind power, in particular to a collecting ring, an electric energy conversion device and a wind generating set.

Background

The collecting ring is also called a conducting ring, a slip ring, a collecting ring, a converging ring and the like. It can be used in any electromechanical system that requires continuous rotation while requiring the transmission of power and signals from a fixed position to a rotating position. The collecting ring can improve the system performance, simplify the system structure and avoid the strain caused by the wire in the rotating process, so the collecting ring has wide application.

Taking an electric energy conversion device as an example, in the electric energy conversion device, the collecting ring can be used for being connected with the motor, so that the relative rotation of a rotor and a stator of the motor can be ensured, and meanwhile, the requirements of transmitting power, signals and the like to the rotor can be ensured.

However, the collector ring in the related art has a large occupied volume in the axial space due to the insufficient structural layout, so that the space utilization rate is reduced.

Disclosure of Invention

The embodiment of the utility model provides a collecting ring, an electric energy conversion device and a wind generating set, wherein the collecting ring can meet transmission requirements of power supply, signals and the like, and is compact in structure, small in size and high in space utilization rate.

In one aspect, according to an embodiment of the present utility model, there is provided a slip ring for a first member, the first member including a rotating portion and a fixing portion that are rotationally fitted, the slip ring including: the ring assembly comprises more than two slip rings which are coaxially arranged and distributed at intervals in the radial direction of the ring assembly, and each slip ring is connected with the rotating part in an insulating way; the brush assembly is arranged at one end of the ring assembly in the axial direction of the brush assembly, the brush assembly comprises more than two conductive brushes, one end of each slip ring in the axial direction is electrically contacted with at least one conductive brush, and the conductive brushes are in insulating connection with the fixing part.

According to an aspect of the embodiment of the present utility model, the slip ring further includes a brush holder, the brush holder is connected with the fixing portion in an insulating manner, and the conductive brush is detachably connected with the brush holder.

According to one aspect of the embodiment of the utility model, the brush holder is provided with the inserting groove, the inserting groove is concavely arranged from one side of the brush holder, which faces the slip ring, to the side where the slip ring is located in the axial direction, and the conductive brush at least partially stretches into the inserting groove and is detachably connected with the brush holder.

According to one aspect of the embodiment of the utility model, the collecting ring further comprises a fixing sleeve, and the fixing sleeve is arranged in the inserting groove and clamped between the brush frame and the conductive brush.

According to one aspect of an embodiment of the utility model, the number of conductive brushes is greater than or equal to the number of slip rings, and the plurality of conductive brushes are spaced apart along the radial direction of the ring assembly.

According to an aspect of the embodiment of the present utility model, each slip ring includes a ring body that is in electrical contact with the conductive brush, and a connection terminal provided on the ring body on a side of the ring body that faces away from the conductive brush in the axial direction, the connection terminal being for electrical connection with at least part of the rotating portion.

According to one aspect of the embodiment of the utility model, the wiring terminal is integrally rod-shaped and extends along the axial direction, one end of the wiring terminal in the axial direction is fixedly connected with the ring body, the other end of the wiring terminal is detachably connected with the locking cap, and the locking cap and the ring body jointly clamp at least part of the rotating part.

According to an aspect of the embodiment of the utility model, each slip ring further comprises an insulation sleeve, wherein the insulation sleeve is sleeved on the wiring terminal and clamped between the ring body and the locking cap, and the wiring terminal is in insulation connection with the rotating part through the insulation sleeve.

In another aspect, an embodiment of the present utility model provides an electric energy conversion device, including: the motor comprises a rotor and a stator which are coaxially arranged and are in running fit; the slip rings of the ring assembly are distributed at intervals along the radial direction of the rotor and are respectively connected with the rotor in an insulating way, and the conductive brushes of the brush assembly are connected with the stator in an insulating way.

According to another aspect of the embodiment of the utility model, the rotor is arranged in the stator, the rotor comprises a rotating shaft, a web plate and windings, the web plate is sleeved on the rotating shaft and fixedly connected with the rotating shaft, the windings are arranged on the web plate, each slip ring is arranged at one end of the web plate in the axial direction, and the slip rings are in insulating fit with the web plate and are electrically connected with the windings.

According to another aspect of an embodiment of the utility model, the rotor further comprises an insulating pad arranged at one end of the web in the axial direction and clamped between the web and the slip ring, the slip ring passing at least partially through the web and the insulating pad in the axial direction and being electrically connected to the winding.

According to another aspect of the embodiment of the utility model, the stator comprises a stator support and a stator end cover, the stator support is arranged around the rotor, the stator end cover is arranged on one side of the stator support, which is close to the brush assembly in the axial direction, an opening and a cover body for closing the opening are arranged on the stator end cover, and the cover body is detachably connected with the stator end cover.

According to another aspect of the embodiment of the utility model, the number of the openings is more than two and the openings are distributed at intervals, a cover body is arranged at each opening, and the front projection of the cover body covers the front projection of the conductive brush along the axial direction.

According to another aspect of an embodiment of the utility model, the cover is a transparent plate.

In yet another aspect, according to an embodiment of the present utility model, a wind generating set is provided, including the slip ring described above, or including the electric energy conversion device described above.

According to the collecting ring, the electric energy conversion device and the wind generating set provided by the embodiment of the utility model, the collecting ring comprises a ring assembly and a brush assembly, the ring assembly comprises more than two slip rings which are coaxially arranged and are distributed at intervals in the radial direction of the ring assembly, the brush assembly is arranged at one axial end of the ring assembly, the brush assembly comprises more than two conductive brushes, each slip ring can be in insulating connection with a rotating part of a first component, and each conductive brush can be in insulating connection with a fixed part of the first component. Because one end of each slip ring in the axial direction is electrically contacted with at least one conductive brush, the transmission requirements of power supply, signals and the like can be met. Meanwhile, the slip rings are distributed along the radial direction at intervals and matched with the conductive brushes, so that the collector rings are small in overall occupied space in the axial direction, compact in overall structure, small in size and high in space utilization rate.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

FIG. 1 is a front view of the mating of a slip ring with a first component in accordance with one embodiment of the present utility model;

FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a partial enlarged view at D in FIG. 2;

FIG. 4 is a cross-sectional view taken along the direction C-C in FIG. 1;

FIG. 5 is an enlarged view of a portion of FIG. 4 at E;

FIG. 6 is a schematic view of a partial structure of a slip ring according to an embodiment of the present utility model;

FIG. 7 is a side view of the mating of a slip ring with a first component in accordance with one embodiment of the present utility model;

FIG. 8 is a cross-sectional view taken along the direction F-F in FIG. 7;

fig. 9 is a partial enlarged view at G in fig. 8;

FIG. 10 is an isometric view of a power conversion device according to one embodiment of the utility model;

FIG. 11 is a partially cut-away schematic illustration of an electrical energy conversion device in accordance with an embodiment of the utility model;

FIG. 12 is a schematic view of a partial structure of a rotor according to an embodiment of the present utility model;

FIG. 13 is a cross-sectional view taken along H-H in FIG. 12;

FIG. 14 is a schematic view of a wind turbine generator system according to an embodiment of the present utility model; .

Wherein:

1-collecting rings;

a 10-ring assembly; 11-slip rings; a 111-ring body; 112-connection terminals; 113-locking cap; a 20-brush assembly; 21-an electrically conductive brush; 30-brush holder; 31-a plug-in groove; 40-fixing sleeve; 50-insulating sleeves;

100-a first component; 100 A-A rotating part; 100 b-a fixing part;

2-an electric motor;

210-a rotor; 211-rotating shaft; 212-web; 213-winding;

220-stator; 221-stator support; 222-stator end cap; 222 a-opening; 222 b-cover;

230-insulating pad;

x-axis direction; y-radial;

3-tower; 4-nacelle; 5-impeller; 6-electric energy conversion device.

In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.

Detailed Description

Features and exemplary embodiments of various aspects of the utility model are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the utility model by showing examples of the utility model. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order not to unnecessarily obscure the present utility model; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The azimuth terms appearing in the following description are all directions shown in the drawings, and do not limit the specific structures of the slip ring, the electric energy conversion device and the wind generating set of the present utility model. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

The slip ring may be used in any electromechanical system that requires continuous rotation while requiring the transmission of power and signals from a stationary position to a rotating position. Taking the electric energy conversion device as an example, the electric energy conversion device can be used for being connected with a motor, so that the relative rotation of a rotor and a stator of the motor can be ensured, and meanwhile, the requirements of transmitting power, signals and the like to the rotor can be ensured.

However, in the slip ring in the related art, each slip ring is generally disposed along an axial direction and the conductive brush matched with the slip ring is disposed on an outer circumferential surface of the slip ring in a radial direction, so that the slip ring occupies a larger volume in an axial space in a layout manner, and the space utilization rate is reduced.

Therefore, in order to solve the technical problems, the embodiment of the utility model provides a novel collecting ring, which can meet the transmission requirements of power supply, signals and the like, and has the advantages of compact structure, small volume and high space utilization rate.

As shown in fig. 1 to 6, the slip ring 1 provided in the embodiment of the present utility model is used for a first component 100, where the first component 100 includes a rotating portion 100a and a fixing portion 100b that are in a rotating fit, the slip ring 1 includes a ring assembly 10 and a brush assembly 20, the ring assembly 10 includes two or more slip rings 11 coaxially disposed and spaced apart in a radial direction Y of the ring assembly 10, and each slip ring 11 is connected with the rotating portion 100a in an insulating manner. The brush assembly 20 is disposed at one end of the ring assembly 10 in the axial direction X thereof, the brush assembly 20 includes two or more conductive brushes 21, one end of each slip ring 11 in the axial direction X is electrically contacted with at least one conductive brush 21, and the conductive brushes 21 are connected with the fixing portion 100b in an insulating manner.

The first member 100 may include a motor, the rotating part 100a may be a rotor, and the fixing part 100b may be a stator. Of course, this is an alternative example. In some examples, the first component 100 may also be made to include an impeller, the rotating portion 100a being a hub, and the stationary portion 100b being an impeller. Of course, in some embodiments, the rotating portion 100a may be a nacelle and the fixed portion 100b a tower, and may be used in any electromechanical system that requires continuous rotation while requiring power and signals to be transmitted from a fixed position to a rotating position.

The number of slip rings 11 comprised by the ring assembly 10 may be two, three or more, depending on the power or signal required by the first component 100. The slip ring 11 may be made of an electrically conductive material. When the number of ring assemblies 10 is more than three, the distance between each adjacent two slip rings 11 may be equal in the radial direction Y, although in some examples, the distance between each adjacent two slip rings 11 may be made different.

The slip ring 11 and the rotating portion 100a may be connected in an insulating manner by adding an insulating structure between them, and by indirectly connecting the slip ring 11 and the rotating portion 100a, the insulating structure may include an insulating pad or an insulating coating provided on at least one of the slip ring 11 and the rotating portion 100a, so that the insulating connection requirement can be ensured.

The brush assembly 20 may include the same number of conductive brushes 21 as the slip rings 11 and be disposed one-to-one. Of course, the number of conductive brushes 21 may be larger than the number of slip rings 11, that is, one slip ring 11 may correspond to two or more conductive brushes 21.

The conductive brush 21 and the fixing portion 100b may be connected in an insulating manner by adding an insulating structure between them, and the insulating structure may be an insulating pad, an insulating sleeve, or an insulating coating provided on the conductive brush 21 and the fixing portion 100b, so that the insulating connection requirement can be ensured.

The slip ring 11 and the conductive brush 21 can be in direct contact in the axial direction X, so that transmission of power, signals and the like between the slip ring 11 and the conductive brush 21 is realized.

The conductive brush 21 may be made of a graphite alloy containing a metal material of good conductor such as gold, silver, or copper, or may be a carbon fiber brush having good conductivity, and the maintenance frequency of the conductive brush 21 may be reduced. Of course, other materials having good electrical conductivity may be used.

In the slip ring 1 provided in the embodiment of the present utility model, since the ring assembly 10 includes more than two slip rings 11 coaxially disposed and spaced apart from each other in the radial direction Y of the ring assembly 10, the brush assembly 20 is disposed at one end of the ring assembly 10 in the axial direction X thereof, and the brush assembly 20 includes more than two conductive brushes 21, each slip ring 11 can be connected with the rotating portion 100a of the first member 100 in an insulating manner, and each conductive brush 21 is connected with the fixed portion 100b of the first member 100 in an insulating manner. Since one end of each slip ring 11 in the axial direction X is in electrical contact with at least one conductive brush 21, transmission requirements of power, signals, and the like can be satisfied. Meanwhile, the slip rings 11 are distributed along the radial direction Y at intervals and matched with the conductive brushes 21, so that the collector ring 1 occupies small space in the axial direction X, and has the advantages of compact integral structure, small volume and high space utilization rate.

In some alternative embodiments, the slip ring 1 provided in the embodiments of the present utility model may further include a brush holder 30, where the brush holder 30 is connected to the fixing portion 100b in an insulating manner, and the conductive brush 21 is detachably connected to the brush holder 30.

With continued reference to fig. 1 to 6, by providing the brush holder 30, the collector ring 1 according to the embodiment of the present utility model can use the brush holder 30 to connect the conductive brush 21 with the fixing portion 100b in an insulating manner, so as to ensure the installation requirement of the conductive brush 21, and further ensure the electrical connection requirement of the conductive brush 21 with the slip ring 11 and the insulation connection requirement with the fixing portion 100 b. Since the conductive brush 21 needs to be matched with the rotating slip ring 11, the conductive brush is easy to wear and belongs to a vulnerable part. Therefore, by detachably connecting the conductive brush 21 and the brush holder 30, when the conductive brush 21 is worn to a certain extent, the replacement of the conductive brush 21 is facilitated,

in some alternative embodiments, the brush holder 30 is provided with a socket 31, the socket 31 being recessed from the side of the brush holder 30 facing the slip ring 11 in the axial direction X away from the slip ring 11, and the conductive brush 21 extending at least partially into the socket 31 and being detachably connected to the brush holder 30.

The shape of the inserting grooves 31 can be matched with that of the conductive brushes 21, a plurality of inserting grooves 31 can be arranged on the brush holder 30, and each conductive brush 21 can be inserted into one of the inserting grooves 31.

Alternatively, the brush holder 30 itself may be made of an insulating material, and of course, may be supported by a metallic material or the like having high rigidity. When a metal material is used for the support, an insulating layer may be provided between the brush holder 30 and the conductive brush 21. In some embodiments, an insulating coating may be disposed on the conductive brush 21 or the brush holder 30, so as to realize an insulating connection between the conductive brush 21 and the brush holder 30, and further realize an insulating connection requirement between the conductive brush 21 and the fixing portion 100 b.

According to the collecting ring 1 provided by the embodiment of the utility model, the socket grooves 31 are formed in the brush frame 30, and the matching mode of the conductive brush 21 and the socket grooves 31 is limited, so that the requirement of detachable connection between the conductive brush 21 and the brush frame 30 can be met. Meanwhile, the arrangement mode is beneficial to the disassembly, assembly and replacement of the conductive brush 21.

In some alternative embodiments, the collecting ring 1 provided by the embodiment of the present utility model further includes a fixing sleeve 40, where the fixing sleeve 40 is disposed in the inserting groove 31 and is clamped between the brush holder 30 and the conductive brush 21.

The collector ring 1 provided by the embodiment of the utility model can realize the extrusion locking effect on the conductive brush 21 by arranging the fixing sleeve 40. Meanwhile, in the above arrangement, the fixing sleeve 40 can be used to insulate the conductive brush 21 from the brush holder 30, so as to improve the safety of the conductive brush 21 in transmitting power and signals. The fixing sleeve 40 can be sleeved on the part of the conductive brush 21 inserted into the inserting groove 31, so that the fixing of the conductive brush 21 is ensured, and meanwhile, the insulation connection requirement is ensured.

In some alternative embodiments, the number of the conductive brushes 21 is greater than or equal to the number of the slip rings 11 in the slip ring 1 provided in the embodiment of the present utility model, and the plurality of conductive brushes 21 are spaced apart along the radial direction Y of the ring assembly 10.

Illustratively, when the number of conductive brushes 21 is equal to the number of slip rings 11, each conductive brush 21 may be spaced apart along the radial direction Y of the ring assembly 10. Taking three slip rings 11 and three conductive brushes 21 as an example, each conductive brush 21 may be distributed at intervals along the radial direction Y of the ring assembly 10 and connected to the same brush holder 30, and each conductive brush 21 is disposed opposite to one slip ring 11 in the axial direction X and electrically contacts. Of course, this is an alternative example, in some embodiments, the number of slip rings 11 may be three, and the number of conductive brushes 21 may be six, where each slip ring 11 is correspondingly provided with two conductive brushes 21, which may be specifically determined according to the transmission requirements of the power source, the signal, and the like.

According to the collector ring 1 provided by the embodiment of the utility model, the plurality of conductive brushes 21 are distributed at intervals along the radial direction Y of the ring assembly 10, so that the distribution form of the plurality of slip rings 11 is matched, and the electric contact requirement between the collector ring and the slip rings 11 corresponding to the collector ring is ensured.

In some alternative embodiments, in the slip rings 1 provided by the embodiments of the present utility model, each slip ring 11 includes a ring body 111 and a connection terminal 112 disposed on the ring body 111, where the ring body 111 is in electrical contact with the conductive brush 21, and the connection terminal 112 is disposed on a side of the ring body 111 facing away from the conductive brush 21 in the axial direction X, and the connection terminal 112 is used for at least partially electrically connecting with the rotating portion 100a.

The collecting ring 1 and the connecting terminal 112 can be electrically coupled to each other, and can be of an integral structure, or can be integrally connected by welding, screwing or the like.

The slip ring 11 and the slip ring 1 provided in the embodiment of the present utility model adopt the above structure, so that not only insulation connection with the rotating portion 100a can be ensured, but also connection with a corresponding structure on the rotating portion 100a can be realized by using the connection terminal 112, so as to transmit the power supply or signal acquired by the conductive brush 21 to a region corresponding to the rotating portion 100a. Of course, the slip ring 11 takes the above form as an alternative example, and in some examples, it may be made to include the ring body 111, and be electrically coupled to the region corresponding to the rotating portion 100a through the ring body 111, as long as the transmission requirement of the power or the signal can be ensured.

As shown in fig. 1 to 9, in some alternative embodiments, in the slip ring 1 provided in the embodiments of the present utility model, the connection terminal 112 is integrally rod-shaped and extends along the axial direction X, one end of the connection terminal 112 in the axial direction X is fixedly connected to the ring body 111, and the other end is detachably connected to the locking cap 113, and the locking cap 113 and the ring body 111 jointly clamp at least part of the rotating portion 100a.

Optionally, one end of the connecting terminal 112 in the axial direction X may be connected to the ring body 111 by welding, or may be connected by integrally forming, so as to ensure the requirement of fixed connection between the two.

According to the collecting ring 1 provided by the embodiment of the utility model, the connecting terminal 112 is in the shape of a rod as a whole, and one end of the connecting terminal 112 in the axial direction X is fixedly connected with the ring body 111, so that the connection strength between the connecting terminal 112 and the ring body 111 can be ensured. Meanwhile, the locking cap 113 is detachably connected to the connection terminal 112 and clamps the rotating part 100a together with the ring body 111, so that the connection terminal 112 can be used for at least partially electrically coupling with the rotating part 100a, and can provide a connection medium for the locking cap 113, so that the whole slip ring 11 is connected and locked with the rotating part 100a, and can synchronously move along with the rotating part 100a. That is, the connection terminal 112 can achieve both the conductive path function of connecting the rotating portion 100a to the ring body 111 and the purpose of connecting and fixing the ring body 111 and the rotating portion 100a in a tight fit with the locking cap 113.

In some alternative embodiments, in the slip rings 1 provided in the embodiments of the present utility model, each slip ring 11 further includes an insulation sleeve 50, where the insulation sleeve 50 is sleeved on the connection terminal 112 and clamped between the ring body 111 and the locking cap 113, and the connection terminal 112 is connected with the rotating portion 100a in an insulating manner through the insulation sleeve 50.

The insulating cover 50 may be a cover structure having an insulating function such as rubber or plastic.

According to the collecting ring 1 provided by the embodiment of the utility model, the slip ring 11 further comprises the insulating sleeve 50, so that the insulating sleeve 50 can be beneficial to realizing the insulating connection between the wiring terminal 112 and the rotating part 100a, and when the rotating part 100a is a conductor, the influence on the transmission of power supply, signals and the like of the wiring terminal 112 is avoided, and the integral functional requirement of the collecting ring 1 is ensured.

As shown in fig. 10 to 13, in another aspect, the embodiment of the present utility model further provides an electric energy conversion device 6, which includes an electric motor 2 and a collector ring 1 provided in each of the foregoing embodiments, wherein the electric motor 2 includes a rotor 210 and a stator 220 coaxially disposed and rotationally fitted, each slip ring 11 of the ring assembly 10 is distributed at intervals along a radial direction Y of the rotor 210 and is respectively connected with the rotor 210 in an insulating manner, and each conductive brush 21 of the brush assembly 20 is connected with the stator 220 in an insulating manner.

That is, when the slip ring 1 is used for the electric power conversion device 6, the first member 100 mentioned in the slip ring 1 may include the motor 2, the rotating portion 100a may be understood as a rotor 210 of the motor 2, and the fixing portion 100b may be understood as a stator 220 of the motor 2.

The electric energy conversion device 6 provided by the embodiment of the utility model comprises the motor 2 and the collecting ring 1, and can transmit external power sources, signals and the like to the rotor 210 of the motor 2 through the collecting ring 1 by the collecting ring 1, so as to meet the power generation requirement. Since the ring assembly 10 of the slip ring 1 includes two or more coaxially arranged slip rings 11 spaced apart in the radial direction Y of the rotor 210, and each of the conductive brushes 21 of the brush assembly 20 is arranged at one end of the ring assembly 10 in the axial direction X thereof and is connected with the stator 220 in an insulating manner. One end of each slip ring 11 in the axial direction X is in electrical contact with at least one conductive brush 21, so that transmission requirements of power supply, signals and the like can be met. By arranging the slip rings 11 along the radial direction Y at intervals and matching the slip rings with the conductive brushes 21, the axial direction X of the motor 2 can be shortened, the volume of the motor 2 can be reduced, and the cost of the motor 2 can be reduced.

In the electric energy conversion device 6 provided by the embodiment of the utility model, the motor 2 can be in the form of an outer stator and an inner rotor, and of course, can also be in the form of an outer rotor and an inner stator.

In some alternative embodiments, the rotor 210 may be disposed in the stator 220, where the rotor 210 includes a rotating shaft 211, a web 212, and windings 213, the web 212 is sleeved on the rotating shaft 211 and fixedly connected to the rotating shaft 211, the windings 213 are disposed on the web 212, each slip ring 11 is disposed at one end of the web 212 in the axial direction X, and the slip ring 11 is in insulating engagement with the web 212 and electrically connected to the windings 213.

According to the electric energy conversion device 6 provided by the embodiment of the utility model, the rotor 210 comprises the rotating shaft 211, the web 212 and the winding 213, and the slip ring 11 is arranged at one end of the web 212 in the axial direction X and is in insulated fit with the web 212, and meanwhile, the slip ring 11 is limited to be electrically connected with the winding 213, so that the slip ring 11 can transmit a power supply or a signal acquired by the conductive brush 21 to the winding 213 through the slip ring 11, and the electric energy conversion requirement of the motor 2 is met. Moreover, the matching between the slip ring 11 and the rotor 210 can fully utilize the internal space of the rotor 210, thereby contributing to the reduction of the overall volume of the power conversion device 6 and the cost reduction.

In some alternative embodiments, the rotor 210 further includes an insulation pad 230, where the insulation pad 230 is disposed at one end of the web 212 in the axial direction X and is clamped between the web 212 and the slip ring 11, and the slip ring 11 passes through the web 212 and the insulation pad 230 at least partially in the axial direction X and is electrically connected to the winding 213.

When the slip ring 11 includes the ring body 111 and the connection terminal 112, the ring body 111 may be provided at one end of the web 212 in the axial direction X, and the insulating pad 230 may be provided by sandwiching the ring body 111 and the web 212, so that the ring body 111 and the web 212 are insulated from each other. The connection terminal 112 may be disposed at a side of the ring body 111 facing away from the conductive brush 21 in the axial direction X, and the connection terminal 112 is fixedly connected to the ring body 111 at one end in the axial direction X and at the other end at least partially penetrates the web 212 and the insulating pad 230 in the axial direction X and is electrically coupled to the winding 213. Optionally, the other end of the connection terminal 112 is detachably connected with a locking cap 113, and the locking cap 113 and the ring body 111 jointly clamp the web 212 of the rotor 210, so as to ensure that the slip ring 11 is integrally connected with the rotor 210, so that the slip ring can synchronously rotate along with the rotor 210 and ensure the stability of the electrical connection with the winding 213.

In some alternative embodiments, the stator 220 includes a stator support 221 and a stator end cover 222, the stator support 221 is disposed around the rotor 210, the stator end cover 222 is disposed on a side of the stator support 221 near the brush assembly 20 in the axial direction X, the stator end cover 222 is provided with an opening 222a and a cover 222b for closing the opening 222a, and the cover 222b is detachably connected with the stator end cover 222.

In the electric energy conversion device 6 provided in the embodiment of the present utility model, when the collecting ring 1 includes the brush holder 30, the brush holder 30 may be connected to at least one of the stator support 221 and the stator end cover 222, and a welding connection manner may be adopted, or a detachable connection manner such as a bolt may be adopted.

In the electric energy conversion device 6 provided by the embodiment of the utility model, the stator 220 adopts the above structural form, and the situation inside the motor 2, such as the abrasion situation of the conductive brush 21, can be observed by disassembling and assembling the cover 222b on the stator end cover 222. When the conductive brush 21 is worn to a certain extent and the function of the collector ring 1 is affected, the conductive brush 21 can be replaced by disassembling and assembling the cover 222b, and after the conductive brush 21 is replaced, the cover 222b can be reinstalled on the stator end cover 222, so that the electric energy conversion device 6 is put into operation again, and the disassembly and replacement of the conductive brush 21 and other devices are facilitated.

In some alternative embodiments, the number of the openings 222a of the power conversion device 6 provided in the embodiment of the present utility model is more than two and the openings 222a are distributed at intervals, and a cover 222b is disposed at each opening 222a, and the front projection of the cover 222b covers the front projection of the conductive brush 21 along the axial direction X.

The number of openings 222a may be two, three, or more. A cover 222b is detachably connected to each opening 222 a.

According to the electric energy conversion device 6 provided by the embodiment of the utility model, through the arrangement, after the cover body 222b is disassembled and assembled, the opening 222a can be arranged opposite to the conductive brush 21, so that the conductive brush 21 can be replaced conveniently.

In some alternative embodiments, the cover 222b is a transparent plate of the power conversion device 6 provided in the embodiments of the present utility model. By making the cover 222b a transparent plate, it is possible to observe the internal condition of the motor 2 when the cover 222b is not attached or detached.

As shown in fig. 14, in yet another aspect, the embodiment of the present utility model further provides a wind power generator set, where the wind power generator set 2 includes the power conversion device 6 provided in the foregoing embodiments, and may further include a tower 3, a nacelle 4, and an impeller 5, and the nacelle 4 may be disposed above the tower 3. The power conversion means 6 may be located inside the nacelle 4, but may, of course, also be located outside the nacelle 4 in some examples. The impeller 5 can be connected with the rotor 210 to drive the rotor 210 to rotate relative to the stator 220, so that electric energy conversion is realized, the collector ring 1 can guide a power supply to the winding 213 of the rotor 210, transmission can be carried out according to the requirement, and the conversion requirement from wind energy to electric energy is ensured.

Of course, in some embodiments, the wind generating set may further include the collecting ring 1 provided in each embodiment, where the collecting ring 1 may be connected between the tower 3 and the nacelle 4, and of course, may also be connected between the hub of the impeller 5 and the blades, which is not described herein again.

While the utility model has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (15)

1. A slip ring for a first component, the first component comprising a rotating portion and a fixed portion that are rotationally engaged, the slip ring comprising:

the ring assembly comprises more than two slip rings which are coaxially arranged and are distributed at intervals in the radial direction of the ring assembly, and each slip ring is connected with the rotating part in an insulating way;

the brush assembly is arranged at one end of the ring assembly in the axial direction of the brush assembly, the brush assembly comprises more than two conductive brushes, each slip ring is electrically contacted with at least one conductive brush at one end of the slip ring in the axial direction, and the conductive brushes are in insulating connection with the fixing parts.

2. The slip ring of claim 1, further comprising a brush holder, the brush holder being in insulating connection with the fixed portion, the conductive brush being removably connected with the brush holder.

3. The collecting ring according to claim 2, wherein the brush holder is provided with a plugging groove, the plugging groove is recessed from the brush holder in the axial direction toward a side of the slip ring away from the slip ring, and the conductive brush at least partially extends into the plugging groove and is detachably connected with the brush holder.

4. The slip ring of claim 3, further comprising a retaining sleeve disposed in the socket and sandwiched between the brush holder and the conductive brush.

5. The slip ring of claim 1, wherein the number of conductive brushes is greater than or equal to the number of slip rings, and wherein a plurality of the conductive brushes are spaced apart along the radial direction of the ring assembly.

6. The slip ring according to any one of claims 1 to 5, wherein each slip ring includes a ring body that is in electrical contact with the conductive brush, and a connection terminal provided on the ring body on a side of the ring body that faces away from the conductive brush in the axial direction, the connection terminal being for electrical connection with at least part of the rotating portion.

7. The slip ring as claimed in claim 6, wherein the connection terminal is integrally rod-shaped and extends in the axial direction, the connection terminal is fixedly connected with the ring body at one axial end, and a locking cap is detachably connected to the other axial end, and the locking cap and the ring body jointly clamp at least part of the rotating portion.

8. The slip ring of claim 7, wherein each slip ring further comprises an insulating sleeve, wherein the insulating sleeve is sleeved on the connection terminal and clamped between the ring body and the locking cap, and the connection terminal is in insulating connection with the rotating part through the insulating sleeve.

9. An electrical energy conversion device, comprising:

the motor comprises a rotor and a stator which are coaxially arranged and are in running fit;

the slip ring according to any one of claims 1 to 8, wherein each slip ring of the ring assembly is spaced apart in a radial direction of the rotor and is respectively connected to the rotor in an insulating manner, and each conductive brush of the brush assembly is connected to the stator in an insulating manner.

10. The electrical energy conversion device of claim 9, wherein the rotor is disposed in the stator, the rotor comprises a shaft, a web, and windings, the web is sleeved on the shaft and fixedly connected with the shaft, the windings are disposed on the web, each slip ring is disposed on one end of the web in the axial direction, and the slip rings are in insulating fit with the web and electrically connected with the windings.

11. The electrical energy conversion device of claim 10, wherein the rotor further comprises an insulating pad disposed at one end of the web in the axial direction and sandwiched between the web and the slip ring, the slip ring passing at least partially through the web and the insulating pad in the axial direction and electrically connected to the winding.

12. The electrical energy conversion device of claim 9, wherein the stator comprises a stator support and a stator end cap, the stator support is disposed around the rotor, the stator end cap is disposed on a side of the stator support that is adjacent to the brush assembly in the axial direction, an opening and a cover body that closes the opening are disposed on the stator end cap, and the cover body is detachably connected to the stator end cap.

13. The electrical energy conversion device of claim 12, wherein the number of openings is more than two and is distributed at intervals, the cover is disposed at each opening, and the front projection of the cover covers the front projection of the conductive brush along the axial direction.

14. The electrical energy conversion device of claim 12, wherein the cover is a transparent plate.

15. A wind power generator set comprising a slip ring according to any one of claims 1 to 8 or comprising an electrical energy conversion device according to any one of claims 9 to 14.