CN115313749B

CN115313749B - Flywheel energy storage device

Info

Publication number: CN115313749B
Application number: CN202211237392.4A
Authority: CN
Inventors: 谢洪生; 张庆源; 刘杰; 王聪
Original assignee: Shenyang Vycon New Energy Technology Co ltd
Current assignee: Shenyang Vycon New Energy Technology Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-03-14
Anticipated expiration: 2042-10-11
Also published as: CN115313749A

Abstract

The invention discloses a flywheel energy storage device, comprising: a housing; the rotor is arranged in the shell; the end cover is arranged at one axial end of the shell and is opposite to one axial end of the rotor in the axial direction; an axial sensor, the axial sensor comprising: the rotor end cover comprises an installation shell and a detection assembly, wherein the installation shell extends in the direction perpendicular to the axial direction, at least one end of the installation shell is fixedly connected with the end cover, and the detection assembly is arranged in the installation shell and is opposite to one end of the rotor in the axial direction. When the rotor rotates, the amplitude of the rotor in the axial direction is detected through the magnetic field induction change of the detection assembly, so that the accurate control of the rotor axial gap in the suspension rotation can be achieved. In addition, the detection assembly and one axial end of the rotor are arranged oppositely in the axial direction, so that the measurement accuracy of the detection assembly can be ensured to be higher, and the flywheel energy storage device does not need to be matched with and detected by adding a circuit board, so that the problem caused by the fault of an electronic element can be reduced.

Description

Flywheel energy storage device

Technical Field

The invention relates to the technical field of flywheels, in particular to a flywheel energy storage device.

Background

In the related art, the axial sensor is an important detection element in the magnetic suspension flywheel energy storage device, and when the axial sensor fails in operation, the flywheel cannot normally operate. The axial sensor of flywheel installs in the inside of shell, mostly installs and detects with the cooperation of PCB board in the rotor both sides. However, the installation difficulty is high, the cost is relatively high, and the detection precision cannot meet the requirement of the control operation precision of the magnetic suspension flywheel energy storage device.

In addition, the number of measuring elements increases, which causes an increase in number of failure points, makes trouble-shooting difficult, increases the number of assembling man-hours, and makes control accuracy impossible.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a flywheel energy storage device which can accurately detect the amplitude of the rotor in the axial direction and achieve accurate control of the rotor axial clearance in suspension rotation.

The flywheel energy storage device comprises: a housing; a rotor disposed within the housing; the end cover is arranged at one axial end of the shell and is opposite to one axial end of the rotor in the axial direction; an axial sensor, the axial sensor comprising: the rotor end cover comprises an installation shell and a detection assembly, wherein the installation shell extends in the direction perpendicular to the axial direction and is at least provided with one end fixedly connected with the end cover, and the detection assembly is arranged in the installation shell and is oppositely arranged at the axial end of the rotor.

According to the flywheel energy storage device, when the rotor rotates, the amplitude of the rotor in the axial direction is detected through the magnetic field induction change of the detection assembly, so that the accurate control of the rotor axial gap in the suspension rotation can be achieved. In addition, the detection assembly and one axial end of the rotor are arranged oppositely in the axial direction, so that the measurement accuracy of the detection assembly can be ensured to be higher, the flywheel energy storage device is not required to be matched with a circuit board for detection, the manufacturing cost can be reduced, the problem caused by the fault of an electronic element can be reduced, the replacement is more convenient, and the interchangeability is stronger.

In some examples of the present invention, first mounting holes are formed at both ends of the mounting shell in the length direction, second mounting holes are formed in the end cover, the first mounting holes and the second mounting holes correspond to each other one by one and are fixedly connected through fasteners, and an axis of each first mounting hole is parallel to an axis of the rotor.

In some examples of the present invention, first mounting holes are formed at both ends of the mounting shell in the length direction, first positioning posts are arranged on the end covers, the first positioning posts penetrate through the first mounting holes, and the axes of the first positioning posts are parallel to the axis of the rotor.

In some examples of the invention, the detection assemblies are two groups, and the two groups of detection assemblies are arranged on the mounting shell and are spaced in the axial direction so as to detect the position of the rotor at different axial positions.

In some examples of the invention, the detection component comprises: the winding seat is provided with a first groove, the iron core is arranged in the first groove, and the electromagnetic coil is arranged in the first groove and wound on the iron core.

In some examples of the present invention, the bobbin base is annular and the first groove is annular, and the core includes: the electromagnetic coil comprises a first iron core part and a second iron core part which are connected, wherein the first iron core part is attached to the inner peripheral wall of the first groove, the second iron core part is attached to the bottom wall of the first groove, and the electromagnetic coil is wound on the first iron core part.

In some examples of the invention, the flywheel energy storage device further comprises: the insulating part is arranged between the two groups of detection assemblies so as to axially insulate the two groups of detection assemblies.

In some examples of the invention, a side of the mounting housing facing the rotor is provided with a second groove, and the two sets of the detection assembly and the insulator are integrally provided in the second groove.

In some examples of the present invention, the mounting case is further provided with a third groove, the third groove is communicated with the second groove, and the flywheel energy storage device further includes: and the end parts of the connecting wires are arranged in the third grooves and are electrically connected with the electromagnetic coils of the two groups of detection assemblies.

In some examples of the invention, the flywheel energy storage device further comprises: and the filler is poured in the second groove and the third groove so as to fix the ends of the two groups of detection assemblies and the connecting wires.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a flywheel energy storage device according to an embodiment of the invention;

FIG. 2 is a plan view of a flywheel energy storage device according to an embodiment of the invention;

FIG. 3 is a first angular plan view of the axial sensor;

FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is a second angular plan view of the axial sensor;

FIG. 7 is a plan view of the end cap;

FIG. 8 is a schematic view of the end cap when connected to an axial sensor.

Reference numerals:

a flywheel energy storage device 1;

a rotor 10; an end cap 20; a second mounting hole 21; an axial sensor 30; a mounting case 31;

a first mounting hole 310; a detection component 32; a winding base 33; a first groove 330;

an inner circumferential wall 331; a bottom wall 332; a second groove 333; a third recess 334;

a core 34; a first core portion 340; the second core portion 341; an electromagnetic coil 35;

an insulating member 40; a connecting line 50; and a filler 60.

Detailed Description

Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.

A flywheel energy storage device 1 according to an embodiment of the invention is described below with reference to fig. 1-8.

As shown in fig. 1, fig. 2 and fig. 8, a flywheel energy storage device 1 according to an embodiment of the present invention includes: a housing, a rotor 10, an end cover 20 and an axial sensor 30. The rotor 10 is in a rotating state during operation, and the rotor 10 is disposed in the housing, so that the rotor 10 is prevented from being influenced by external environment, the rotor 10 can normally operate, the housing can provide a stable space for the rotor 10, and the rotor 10 is prevented from being damaged due to contact with a foreign object. The end cover 20 is disposed at one axial end of the housing, and the end cover 20 is disposed opposite to one axial end of the rotor 10 in the axial direction, so that the consistency of the installation of the end cover 20 and the housing can be ensured, and a certain gap is maintained between the end cover 20 and the rotor 10 in the axial direction. The rotor 10 may be fabricated from a steel alloy material.

As shown in fig. 3 to 5, the axial sensor 30 includes: the mounting shell 31 extends in a direction perpendicular to an axial direction, i.e., an up-down direction shown in fig. 2, and at least one end of the mounting shell 31 is fixedly connected with the end cover 20, so that the axial sensor 30 can be fixed, and stability of the axial sensor 30 is ensured. Detection module 32 sets up in installation shell 31, can avoid external environment to influence detection module 32 like this, makes detection module 32 can normally work, and installation shell 31 can provide stable space for detection module 32 moreover, avoids detection module 32 and foreign object contact and damages detection module 32.

It should be noted that, a certain detection gap needs to be maintained between the axial sensor 30 and the rotor 10 in the axial direction, so as to reduce the influence of the vibration of the levitating rotor 10 on the axial sensor 30, the detection assembly 32 is electrically connected to the rotor 10, and when the rotor 10 rotates, the amplitude of the rotor 10 in the axial direction is detected through the magnetic field induced change of the detection assembly 32, so that the precise control of the axial gap of the rotor 10 in the levitating rotation can be achieved. In addition, the detection assembly 32 and one axial end of the rotor 10 are arranged oppositely in the axial direction, so that higher measurement accuracy of the detection assembly 32 can be ensured, and the flywheel energy storage device 1 arranged in the way does not need to be matched and detected by adding a circuit board, so that the manufacturing cost can be reduced, the problem caused by the fault of an electronic element can be reduced, the replacement is more convenient, and the interchangeability is stronger.

Alternatively, as shown in fig. 1, fig. 3, fig. 6 to fig. 8, first mounting holes 310 are provided at both ends of the mounting shell 31 in the length direction, second mounting holes 21 are provided on the end cover 20, the first mounting holes 310 correspond to the second mounting holes 21 one by one, and the first mounting holes 310 and the second mounting holes 21 are fixedly connected by fasteners, and the axis of the first mounting holes 310 is parallel to the axis of the rotor 10. Because the first mounting holes 310 correspond to the second mounting holes 21 one to one, the first mounting holes 310 and the second mounting holes 21 can be penetrated by fasteners to fixedly connect the mounting shell 31 and the end cover 20, and the stability of the axial sensor 30 is ensured. And the axis of the first mounting hole 310 is parallel to the axis of the rotor 10, so that the axial sensor 30 and one axial end of the rotor 10 are opposite to each other in the axial direction, and the measurement accuracy of the detection assembly 32 can be ensured to be higher. And the axial installation mode is simple and convenient.

Alternatively, both ends of the mounting shell 31 in the length direction are provided with first mounting holes 310, the end cover 20 is provided with a first positioning column, the first positioning column penetrates through the first mounting holes 310, and an axis of the first positioning column is parallel to an axis of the rotor 10. First mounting hole 310 and first reference column are two, two first mounting holes 310 and two first reference columns one-to-ones, and first mounting hole 310 can be worn to establish by first reference column to first reference column card is established in first mounting hole 310, also can guarantee axial sensor 30's stability with installation shell 31 and end cover 20 fixed connection like this. The axial line of the first positioning column is parallel to the axial line of the rotor 10, so that the axial sensor 30 and the axial end of the rotor 10 are arranged in an axial direction relatively, and the measurement accuracy of the detection assembly 32 is higher.

According to an alternative embodiment of the present invention, as shown in fig. 4 and 5, the detection assemblies 32 are provided in two sets, the two sets of detection assemblies 32 are both disposed in the mounting shell 31, and the two sets of detection assemblies 32 are spaced apart in the axial direction to detect the position of the rotor 10 at different positions in the axial direction. Two sets of determine module 32 detect rotor 10 different positions in the axial respectively, set up two sets of determine module 32 intervals in the axial, can avoid mutual interference between two sets of determine module 32 to can accurately detect the ascending amplitude of rotor 10 axial direction through the magnetic field response change of two sets of determine module 32, reach the accurate control to the rotatory rotor 10 axial gap of suspension.

It should be noted that, because the two sets of detection assemblies 32 are axially arranged at intervals, the axial positions of the rotor 10 detected by the two sets of detection assemblies 32 are different, and the axial position of the rotor 10 can be accurately known by the controller through calculation and analysis after the controller receives the two sets of axial position information.

The axial sensor 30 may be disposed only at the lower end of the rotor 10, i.e., different from the conventional two-end axial sensor, so that the number of the axial sensors 30 may be reduced, and the two-end mounting is not required, which may reduce the mounting steps on one hand, and may improve the structure of the housing on the other hand, without opening the two ends.

Specifically, as shown in fig. 5, the detection assembly 32 includes: the winding seat 33 is formed with a first groove 330, the iron core 34 is arranged in the first groove 330, the electromagnetic coil 35 is arranged in the first groove 330, and the electromagnetic coil 35 is wound on the iron core 34. Set up iron core 34 in first recess 330, solenoid 35 sets up in first recess 330, can carry out relatively fixed to iron core 34 and solenoid 35, avoids iron core 34 and solenoid 35 to appear rocking and shifting, and solenoid 35 is around establishing on iron core 34, is connected through being connected between detection component 32 and the rotor 10 electricity, and when rotor 10 was rotatory, solenoid 35 can produce magnetic field induction to can change the ascending amplitude of detection rotor 10 axial direction through the magnetic field induction of two sets of detection component 32.

As shown in fig. 5, the bobbin 33 has a ring shape, the first groove 330 has a ring shape, and the core 34 includes: and the first iron core part 340 and the second iron core part 341 are connected, the first iron core part 340 is attached to the inner peripheral wall 331 of the first groove 330, the second iron core part 341 is attached to the bottom wall 332 of the first groove 330, and the electromagnetic coil 35 is wound on the first iron core part 340. By attaching the first core portion 340 to the inner peripheral wall 331 of the first groove 330 and attaching the second core portion 341 to the bottom wall 332 of the first groove 330, the core 34 can be closely attached to the bobbin base 33 to relatively fix the core 34, and the electromagnetic coil 35 is wound around the first core portion 340, so that the electromagnetic coil 35 generates magnetic field induction when the rotor 10 rotates. In addition, the iron core 34 and the electromagnetic coil 35 are both in an annular structure mode, so that the installation, debugging, disassembly and replacement are convenient.

Further, as shown in fig. 5, the flywheel energy storage device 1 further includes: and the insulating piece 40 is arranged between the two groups of detection assemblies 32, so that the two groups of detection assemblies 32 are arranged in an insulating way in the axial direction. Be provided with insulating part 40 between two sets of determine module 32, insulating part 40 can be in the axial with two sets of determine module 32 insulation setting, avoids mutual interference between two sets of determine module 32 to can accurately detect the ascending amplitude of rotor 10 axial direction through the magnetic field induction change of two sets of determine module 32, reach the accurate control to rotor 10 axial gap in the suspension rotation.

Alternatively, as shown in fig. 5, a second groove 333 is provided on a side of the mounting shell 31 facing the rotor 10, and the two sets of detection assemblies 32 and the insulating member 40 are integrally provided in the second groove 333. The second groove 333 is formed in one side, facing the rotor 10, of the mounting shell 31, the two groups of detection assemblies 32 and the insulation piece 40 are integrally arranged in the second groove 333, the second groove 333 can provide a relatively stable space for the two groups of detection assemblies 32 and the insulation piece 40, interference of the external environment is avoided, and the two groups of detection assemblies 32 and the insulation piece 40 can work normally.

Of course, as shown in fig. 3 and fig. 6, the mounting shell 31 is further provided with a third groove 334, the third groove 334 is communicated with the second groove 333, and the flywheel energy storage device 1 further includes: and the connecting wire 50, the end of the connecting wire 50 is arranged in the third groove 334, and the end of the connecting wire 50 is electrically connected with the electromagnetic coils 35 of the two groups of detection assemblies 32. The end of the connection line 50 is disposed in the third groove 334, and the third groove 334 is communicated with the second groove 333, so that one end of the connection line 50 can be electrically connected to the electromagnetic coils 35 of the two sets of detection assemblies 32, and the other end of the connection line 50 is electrically connected to the rotor 10, thereby enabling the detection assemblies 32 to be electrically connected to the controller of the rotor 10, when the rotor 10 rotates, the amplitude of the rotor 10 in the axial direction is detected through the magnetic field induced change of the detection assemblies 32, and the precise control of the axial gap of the rotor 10 in the levitation rotation can be achieved.

In addition, as shown in fig. 2, fig. 6 and fig. 8, the flywheel energy storage device 1 further includes: and the filler 60 is poured into the second groove 333 and the third groove 334 so as to fix the two groups of detection assemblies 32 and the ends of the connecting wires 50. The filler 60 is poured into the second groove 333 and the third groove 334, and the filler 60 can fix the ends of the two sets of detection assemblies 32 and the connecting line 50, so that the electric connection between the detection assemblies 32 and the connecting line 50 is more stable, a sealing effect can be achieved, and the overall connectivity of the flywheel energy storage device 1 is better.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more. In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween. In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A flywheel energy storage device, comprising:

a housing;

a rotor disposed within the housing;

the end cover is arranged at one axial end of the shell and is opposite to one axial end of the rotor in the axial direction;

an axial sensor, the axial sensor comprising: installation shell and determine module, the installation shell extend and at least one end and in the axial direction of perpendicular to end cover fixed connection, determine module set up in the installation shell and with the axial one end of rotor sets up relatively in the axial, determine module includes: the detection device comprises a winding seat, an iron core and an electromagnetic coil, wherein a first groove is formed in the winding seat, the iron core is arranged in the first groove, the electromagnetic coil is arranged in the first groove and wound on the iron core, a second groove and a third groove are formed in an installation shell, two groups of detection assemblies are arranged in the second groove, and the third groove is communicated with the second groove;

the end parts of the connecting wires are arranged in the third grooves and are electrically connected with the electromagnetic coils of the two groups of detection assemblies;

and the filler is poured in the second groove and the third groove so as to fix the ends of the two groups of detection assemblies and the connecting wires.

2. The flywheel energy storage device according to claim 1, wherein first mounting holes are formed in both ends of the mounting shell in the length direction, second mounting holes are formed in the end covers, the first mounting holes and the second mounting holes correspond to each other one by one and are fixedly connected through fasteners, and the axis of each first mounting hole is parallel to the axis of the rotor.

3. The flywheel energy storage device according to claim 1, wherein first mounting holes are formed in both ends of the mounting shell in the length direction, first positioning posts are arranged on the end covers, the first positioning posts penetrate through the first mounting holes, and the axis of each first positioning post is parallel to the axis of the rotor.

4. The flywheel energy storage device according to claim 1, wherein the number of the detection assemblies is two, and the two detection assemblies are arranged on the mounting shell and are spaced apart in the axial direction so as to detect the position of the rotor at different positions in the axial direction.

5. The flywheel energy storage device of claim 4, wherein the bobbin is annular and the first recess is annular, the core comprising: the electromagnetic coil comprises a first iron core part and a second iron core part which are connected, wherein the first iron core part is attached to the inner peripheral wall of the first groove, the second iron core part is attached to the bottom wall of the first groove, and the electromagnetic coil is wound on the first iron core part.

6. A flywheel energy storage device as claimed in claim 3, further comprising: the insulating part is arranged between the two groups of detection assemblies so as to axially insulate the two groups of detection assemblies.

7. A flywheel energy storage device according to claim 6, wherein the side of the mounting housing facing the rotor is provided with the second recess, the insulator being provided within the second recess.