CN113676017B - Permanent magnet double-suspension type magnetic liquid kinetic energy collector - Google Patents
Permanent magnet double-suspension type magnetic liquid kinetic energy collector Download PDFInfo
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- CN113676017B CN113676017B CN202110986329.XA CN202110986329A CN113676017B CN 113676017 B CN113676017 B CN 113676017B CN 202110986329 A CN202110986329 A CN 202110986329A CN 113676017 B CN113676017 B CN 113676017B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K44/00—Machines in which the dynamo-electric interaction between a plasma or flow of conductive liquid or of fluid-borne conductive or magnetic particles and a coil system or magnetic field converts energy of mass flow into electrical energy or vice versa
- H02K44/08—Magnetohydrodynamic [MHD] generators
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- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a permanent magnet double suspension type magnetic liquid kinetic energy collector, which comprises: the mass block is positioned in the sealing cavity, a flat coil is arranged in the sealing cavity, and the sectional area of the sealing cavity in the second direction is alternately increased and decreased along the first direction; the mass block is connected with a connecting support piece in a penetrating mode along a first direction, and the sectional area of the connecting support piece in a second direction is alternately reduced and increased along the first direction; magnetic liquid is arranged in the sealing cavity, and the mass block is suspended between the shell and the connecting support piece through the magnetic liquid; the shell is provided with two opposite outer end faces along a first direction, and an air-core coil is sleeved on the outer side face between the outer end faces. The connecting support piece and the shell are matched with the magnetic liquid suspended mass block to realize lubrication and resistance reduction, a spring with variable stiffness coefficient is formed, the hollow coil and the flat coil jointly collect the kinetic energy of the mass block, and the output power of the magnetic liquid kinetic energy collector in unit volume is improved.
Description
Technical Field
The invention relates to the technical field of kinetic energy collection, in particular to a permanent magnet double-suspension type magnetic liquid kinetic energy collector.
Background
The rapid development of portable wearable electronic devices brings challenges to power supply, and the search for sustainable clean energy has a very important meaning for providing power for portable wearable electronic devices. The kinetic energy collector is used for converting the cleaning kinetic energy generated by the motion of the human body into electric energy, and is very suitable for portable wearable electronic devices.
The electromagnetic kinetic energy collector converts the kinetic energy of a moving object into electric energy through the law of electromagnetic induction, has the outstanding advantages of low impedance, high output power, high reliability, long service life and the like, and has wide application prospect.
For a common electromagnetic kinetic energy collector, frictional wear exists between a moving permanent magnet and a kinetic energy collector shell, so that the output power and the service life of the kinetic energy collector are reduced, and the kinetic energy collecting efficiency of the kinetic energy collector under a micro-vibration condition is seriously influenced.
In addition, the electromagnetic kinetic energy collector has a large volume, so that the output power of the kinetic energy collector per unit volume is low.
The specification of publication No. CN111490703A discloses an electromagnetic composite vibrational energy harvester, which includes: the piezoelectric vibrating table comprises a base layer, a permanent magnet assembly, a piezoelectric layer and a support frame arranged on the base vibrating table; the base layer is of an arc arch ring structure, and two ends of the base layer are detachably mounted on two opposite inner side walls of the supporting frame through torsion springs. Because the base layer is detachably arranged on the supporting frame through the torsion springs, different constraint states of the arch ring can be realized by replacing the torsion springs with different rigidity, and the purpose of adjusting the natural frequency of the arch ring structure is achieved.
The specification with publication number CN108539951A discloses a two-dimensional electromagnetic kinetic energy collector, which mainly comprises an outer frame, an inner frame and balls. The outer frame is composed of a shell, a coil fixing plate and a coil array. The inner frame is composed of a bracket, a magnet fixing plate, a magnet array and a spring. The inner frame is separated from the outer frame by balls. The spring is arranged around the inner frame, and an initial distance is reserved between the spring and the outer frame. A plurality of metal coils form a grid type coil array, and adjacent coils are connected in series in an opposite direction. The plurality of magnets form a grid-type magnet array, and the magnetic poles of adjacent magnets are opposite in direction. The planar dimensions of each coil are the same as the corresponding magnet. The inner frame is horizontally fixed with a plurality of layers of magnet arrays, and a coil array fixed on the outer frame is arranged between every two layers of magnet arrays. The south pole and the north pole of the magnets at the same position on the two adjacent layers of the magnet arrays are opposite, and the two adjacent layers of the coils are connected in series in an opposite way. The invention mainly utilizes rolling and collision to realize the collection of low-frequency and broadband vibration energy.
Disclosure of Invention
The invention aims to provide a permanent magnet double-suspension type magnetic liquid kinetic energy collector with a small volume, which has high output power per unit volume and is suitable for collecting kinetic energy under the micro-vibration working condition.
A permanent magnet double-suspension type magnetic liquid kinetic energy collector comprises: the mass block is positioned in the sealed cavity, the sealed cavity is provided with two opposite inner end walls along a first direction, an inner side wall is arranged between the two inner end walls, the sectional area of the sealed cavity in a second direction is alternately increased and decreased along the first direction, and a flat coil is arranged in the sealed cavity;
the mass block comprises at least one permanent magnet, a mass block through hole is formed in the mass block along a first direction, a connecting support member penetrates through the mass block through hole, at least part of the connecting support member extends into the shell in the first direction, and the sectional area of the part, between the two inner end walls, of the connecting support member in a second direction is alternately reduced and increased along the first direction; magnetic liquid is arranged in the sealing cavity, and the mass block is suspended between the shell and the connecting support piece through the magnetic liquid;
the shell is provided with two opposite outer end faces along a first direction, and an air-core coil is sleeved on the outer side face between the two outer end faces.
The second direction is perpendicular to the first direction and faces the inner side wall.
In the permanent magnet double-suspension type magnetic liquid kinetic energy collector, a sealing cavity with a variable sectional area and a connecting support piece are matched with a magnetic liquid suspension mass block to form a magnetic liquid spring with a variable rigidity coefficient; the housing and the connection support provide a restoring force in the vibration direction to the mass through the magnetic liquid, so that it is not necessary to add a spring to provide the restoring force to the mass.
When the permanent magnet double-suspension type magnetic liquid kinetic energy collector is in a vibration state, the mass block generates displacement in the sealed cavity to cause the relative position of the mass block, the flat coil and the hollow coil to change, the permanent magnet in the mass block enables the flux linkage through which the flat coil and the hollow coil pass to change, and then induced electromotive force is generated, so that the purposes of collecting kinetic energy and converting the kinetic energy into electric energy are achieved.
The connecting and supporting piece is provided with a first connecting and supporting piece hole along the first direction, at least one second connecting and supporting piece hole is formed in each of two end portions of the connecting and supporting piece in the first direction, and the first connecting and supporting piece hole is communicated with the second connecting and supporting piece hole.
When the magnetic liquid and the mass block are positioned in the sealing cavity, the magnetic liquid can be adsorbed on the surface of the mass block and the sealing cavity is limited into a plurality of relatively independent sealing spaces, so that the first hole of the connecting support and the second hole of the connecting support are adopted to connect the independent sealing spaces, and the mass block movement obstruction caused by air pressure is prevented; in addition, the weight of the connecting support piece is reduced due to the arrangement of the first hole of the connecting support piece and the second hole of the connecting support piece, so that the total weight of the kinetic energy collector is reduced.
The maximum cross section of the mass block in the second direction is smaller than the minimum cross section of the sealing cavity in the second direction, and the minimum cross section of the mass block through hole in the second direction is larger than the maximum cross section of the connecting support in the second direction. Thereby, the size of the cross section ensures that the mass can be smoothly mounted between the housing and the connecting support and reciprocate in the first direction within the sealed chamber, and the magnetic liquid can be filled in the gaps between the mass and the housing and between the mass and the connecting support.
The sectional area of the connecting and supporting piece along the second direction changes in a large mode at two ends and a small mode in the penetrating permanent magnet; the sectional area of the sealing cavity along the second direction is changed from small at two ends to big in the middle outside the permanent magnet body. Thereby, the connecting support and the housing may provide the mass with a restoring force in the first direction by the magnetic liquid.
Preferably, the mass block is a circular cylinder, the connecting and supporting part is an hourglass-shaped cylinder, the cavity of the sealed cavity is in a shuttle shape, and the central shaft of the connecting and supporting part is collinear with the central shaft of the sealed cavity.
The casing includes a both ends open-ended cavity section of thick bamboo, end cover and is equipped with the foraminiferous locating pin of locating pin end cover, the both ends of cavity section of thick bamboo are passed through the end cover and are formed sealedly, foraminiferous locating pin runs through cavity section of thick bamboo and end cover, foraminiferous locating pin is equipped with the locating pin through-hole, locating pin through-hole intercommunication sealed cavity, the one end that foraminiferous locating pin is close to the quality piece does not surpass the inside wall, the other end of foraminiferous locating pin is stretched out the lateral surface and is sealed through the locating pin end cover. The locating pin with the hole assists the locating of the hollow cylinder and the end cover, and the through hole of the locating pin provides a passage for the magnetic liquid to enter and exit the sealing cavity.
An avoidance hole is formed in the side wall, extending out of the outer side face, of the locating pin with the hole, an interface of the flat coil penetrates through the hollow cylinder and the locating pin with the hole, and the interface of the flat coil extends out of the avoidance hole through a through hole of the locating pin; the electric energy generated by the flat coil is transmitted out. And the avoidance hole penetrates through the interface of the flat coil and is sealed by sealant, so that the air tightness of the sealed cavity is ensured.
The flat coil is fixed on the inner side wall of the end cover, a flat coil through hole is formed in the flat coil along the first direction, and the connecting support piece penetrates through the flat coil through hole and extends into the end cover.
Preferably, the end cover is provided with a blind hole at the end face close to the mass block, blind hole threads are arranged on the circumferential surface of the blind hole, bosses are arranged on the two end faces of the connecting and supporting piece in the first direction, threads matched with the blind hole threads are arranged on the circumferential surface of each boss, and the connecting and supporting piece penetrates through the through hole of the flat coil and is in threaded connection with the end cover.
Preferably, the end cover is provided with an end cover through hole along a first direction, the two ends of the connecting support member penetrate through the shell through the end cover through hole along the first direction and are at least partially positioned outside the shell, and the outer peripheral surfaces of the two ends of the connecting support member are provided with threads and connected with nuts.
A wire groove is formed in the outer side surface of the shell, an air-core coil and a positioning ring are sleeved in the wire groove, the positioning ring is close to the bottom of the groove, and two side walls of the wire groove are respectively abutted against the air-core coil or the positioning ring; the hollow coil and the positioning ring are arranged in the wire slot, so that the sliding of the hollow coil and the positioning ring caused by vibration is prevented.
The shell and the connecting support are made of non-magnetic materials. Because no magnetic force action exists between the non-magnetic material and the mass block, the shell and the connecting support piece made of the non-magnetic material cannot obstruct the reciprocating motion of the mass block, and therefore the shell and the connecting support piece are made of the non-magnetic material, and the output power of the kinetic energy collector is improved.
Compared with the prior art, the invention has the advantages that:
1. the invention realizes lubrication and resistance reduction by using the magnetic liquid suspension mass block, collects the kinetic energy of the mass block by using the hollow coil and the flat coil, and arranges the flat coil in the sealing cavity of the kinetic energy collector, thereby reducing the distance between the mass block and the flat coil in the first direction, increasing the output power of the flat coil and further improving the output power of the permanent magnet double suspension type magnetic liquid kinetic energy collector.
2. The invention utilizes the sealing cavity with variable sectional area and the connecting support to match the magnetic liquid suspended mass block to form the magnetic liquid spring with variable rigidity coefficient, the magnetic liquid spring provides the restoring force of the mass block in the vibration direction, and no additional spring is needed, thereby not only reducing the volume of the kinetic energy collector, but also enabling the permanent magnet double-suspension type magnetic liquid kinetic energy collector to adapt to the vibration with different strengths.
3. The use of the connecting support piece can increase the suspension force of the magnetic liquid on the mass block, which is beneficial to suspending heavier mass block and providing larger restoring force; meanwhile, the connecting support piece can prevent the mass block from overturning in the sealing cavity, so that the reliability of the kinetic energy collector is enhanced; in addition, the connecting and supporting piece can also fix all parts of the shell, and the assembly of the permanent magnet double-suspension type magnetic liquid kinetic energy collector is simplified.
Drawings
Fig. 1 is a schematic structural diagram of a permanent magnet double-suspension type magnetic liquid kinetic energy collector in the embodiment of the invention.
FIG. 2 is a schematic view of the hollow barrel and end cap shown in FIG. 1.
Fig. 3 is a schematic view of the structure of the connection supporter shown in fig. 1.
Fig. 4 is a schematic structural diagram of another embodiment of the present invention.
Reference numerals: the magnetic positioning device comprises a sealed cavity 1, a shell 2, a flat coil 3, a connecting support member 4, a mass block 5, magnetic liquid 6, a hollow coil 7, a positioning ring 8, a nut 9, an inner end wall 11, an inner side wall 12, an outer end face 201, an outer side face 202, a hollow cylinder 21, an end cover 22, a positioning pin end cover 23, a positioning pin 24 with holes, a positioning pin through hole 25, a blind hole 26, a boss 41, an avoiding hole 241, a first hole 42 of the connecting support member, a second hole 43 of the connecting support member, a wire groove 27 and a mass block through hole 51.
Detailed Description
Example 1:
as shown in fig. 1-3, the permanent magnet double suspension type magnetic liquid kinetic energy collector comprises: the device comprises a shell 2 with a sealed cavity 1 arranged inside, a flat coil 3, a connecting support 4, a mass block 5, magnetic liquid 6, an air coil 7 and a positioning ring 8.
The sealed cavity 1 is provided with two opposite inner end walls 11 along a first direction, and an inner side wall 12 is arranged between the two inner end walls 11; the sectional area of the inner side wall 12 in the second direction is changed along the first direction alternately, so that the inner end wall 11 and the inner side wall 12 form a shuttle-shaped sealed cavity with two small sectional areas and a large sectional area in the middle.
The perforated positioning pin 24 penetrates through the hollow cylinder 21 and the end cover 22, the perforated positioning pin 24 is provided with a positioning pin through hole 25, the positioning pin through hole 25 is communicated with the sealing cavity 1, one end, close to the mass block 5, of the perforated positioning pin 24 does not exceed the inner side wall 12, and the other end of the perforated positioning pin 24 extends out of the outer side surface 202 and is sealed through the positioning pin end cover 23.
The positioning pin end cover 23 is movably connected with the positioning pin 24 with the hole, when the magnetic liquid 6 needs to be injected or extracted, the positioning pin end cover 23 is opened, the magnetic liquid 6 is injected or extracted through the positioning pin through hole 25, and the suspension force borne by the mass block 5 is changed by changing the volume of the magnetic liquid 6, so that the rigidity and the damping of the kinetic energy collector are effectively regulated and controlled.
The locating pin 24 with the hole has the functions of connecting and locating the penetrating hollow cylinder 21 and the end cover 22, and provides a passage for the magnetic liquid 6 to enter and exit the sealing cavity 1 through the locating pin through hole 25.
The shell 2 is provided with two opposite outer end faces 201 along the first direction, and the outer side face 202 between the two outer end faces 201 is alternately sleeved with the hollow coil 7 and the positioning ring 8.
The end faces, close to the mass block 5, of the two end covers 22 are fixed with the flat coils 3, the fixing mode can adopt adhesive or threaded connection, and the flat coils 3 are provided with flat coil through holes used for avoiding connection of the supporting pieces 4 along the first direction.
The position, extending out of the outer side surface 202, of the side wall of the perforated positioning pin 24 is provided with an avoiding hole 241, the interface of the flat coil 3 penetrates through the hollow cylinder 21 and the perforated positioning pin 24, extends out of the avoiding hole 241 through a positioning pin through hole 25, and transmits generated electric energy to external equipment.
The end cover 22 is provided with a blind hole 26 along a first direction near the center of the end face of the mass block 5, and blind hole threads are arranged on the circumferential surface of the blind hole 26. The connecting support member 4 is provided with bosses 41 on both end faces in the first direction, and external threads matched with the blind hole threads are arranged outside the peripheral faces of the bosses 41. The two ends of the connecting support 4 pass through the flat coil through hole and are fixed between the two end caps 22 through threaded connection.
The cross-sectional area of the connecting support 4 in the second direction is changed along the first direction alternately, and the connecting support is in the shape of an hourglass cylinder with two large ends and a small middle.
The connecting support member 4 is provided with a first connecting support member hole 42 along the first direction, two end portions of the connecting support member 4 in the first direction are provided with two second connecting support member holes 43, and the first connecting support member hole 42 is communicated with the second connecting support member holes 43.
When the magnetic liquid 6 and the mass block 5 are in the sealed cavity 1, due to the magnetic force of the permanent magnet in the mass block 5 on the magnetic liquid 6, the magnetic liquid 6 can be adsorbed on the surface of the mass block 5, so that the sealed cavity 1 is defined into a plurality of relatively independent sealed spaces, and the first hole 42 of the connecting support and the second hole 43 of the connecting support are adopted to connect the independent sealed spaces, so that the movement obstruction of the mass block 5 caused by air pressure is prevented; furthermore, the arrangement of the first and second connecting support holes 42, 43 reduces the weight of the connecting support 4 and thus the overall weight of the kinetic energy harvester.
The mass block 5 is a circular ring cylinder permanent magnet, the mass block 5 is provided with a mass block through hole 51 along a first direction, and the central axis of the mass block 5 is coincided with the central axis of the mass block through hole 51.
The connecting support 4 is connected in the mass block through hole 51 in a penetrating manner, magnetic liquid 6 which is not filled in the sealing cavity 1 is arranged between the mass block 5 and the connecting support 4 and between the mass block 5 and the shell 2, and the mass block 5 is suspended between the shell 2 and the connecting support 4 through the magnetic liquid 6.
The maximum section of the mass 5 in the second direction is smaller than the minimum section of the seal cavity 1 in the second direction, and the minimum section of the mass through hole 51 in the second direction is larger than the maximum section of the connecting support 4 in the second direction. This ensures that the mass 5 is smoothly inserted into the sealed chamber 1 and reciprocates in the sealed chamber 1 in the first direction, and the magnetic liquid 6 can be filled in the gap between the mass 5 and the hollow cylinder 21 and the gap between the mass 5 and the connecting support 4.
The use of the connecting supports 4 can increase the magnetic liquid suspension force to which the mass 5 is subjected, which is beneficial to suspending the heavier mass 5 and providing greater restoring force; meanwhile, the connecting support piece 4 can prevent the mass block 5 from overturning in the sealing cavity 1, so that the reliability of the kinetic energy collector is enhanced; in addition, the connecting and supporting piece 4 can also fix the hollow cylinder 21 and the end cover 22, and the assembly of the permanent magnet double-suspension type magnetic liquid kinetic energy collector is simplified.
The outer wall of the hollow cylinder 21 is provided with a slot which is matched with the end face of the end cover 22 to form a wire slot 27; set up a holding ring 8 between two hollow coil 7, hollow coil 7 and holding ring 8 cup joint in wire casing 27, and the tank bottom of wire casing 27 offsets with the inner wall of holding ring 8, and the terminal surface of two end covers 22 offsets with hollow coil 7 respectively.
The air coil 7 is fixed on the outer side surface of the shell 2 through the positioning ring 8 and the two end covers 22, and the air coil 7 and the positioning ring 8 are placed in the wire slot 27 to prevent the air coil 7 from sliding due to vibration.
The air core coil 7 is correspondingly sleeved outside the sealed cavity 1 in the second direction. When the mass block 5 reciprocates in the sealed cavity 1, the mass block 5 penetrates through the hollow coil 7 along the first direction, and the magnetic linkage change of the hollow coil 7 is increased, so that the induction voltage is increased, and the output power of the permanent magnet double-suspension type magnetic liquid kinetic energy collector is improved.
The materials of the hollow cylinder 21, the end cap 22, the positioning pin end cap 23, the positioning pin with hole 24 and the connecting support 4 are non-magnetic conducting materials. The non-magnetic material can be non-metallic materials such as polyformaldehyde, nylon and resin, and can also be metallic materials such as aluminum, copper and alloys thereof.
The hollow cylinder 21, the end cover 22 and the connecting support piece 4 are made of metal materials such as aluminum alloy with high mechanical strength, and the positioning pin end cover 23 and the positioning pin with holes 24 are made of non-metal materials such as resin with low density.
There is no magnetic force between the non-magnetic material and the mass 5, so the case 2 and the connection supporter 4 made of the non-magnetic material do not hinder the reciprocating motion of the mass 5, and the reciprocating motion of the mass 5 changes the magnetic linkage of the flat coil 3 and the hollow coil 7, thereby generating an induced voltage. Therefore, the case 2 and the connection support 4 made of non-magnetic conductive material are advantageous for improving the output power of the kinetic energy harvester.
When the permanent magnet double-suspension type magnetic liquid kinetic energy collector is in a vibration state, the mass block 5 generates displacement in the sealed cavity 1, namely, the mass block 5 and the shell 2 generate relative motion. The relative positions of the flat coil 3 and the hollow coil 7 and the shell 2 are unchanged, the mass block 5, the flat coil 3 and the hollow coil 7 generate relative motion, the permanent magnet in the mass block 5 enables the flux linkage through which the flat coil 3 and the hollow coil 7 pass to generate change, and then induced electromotive force is generated, so that the purposes of collecting kinetic energy and converting the kinetic energy into electric energy are achieved.
In the permanent magnet double-suspension type magnetic liquid kinetic energy collector, the sealing cavities 1 with the cross sections changing alternately along the first direction in the second direction and the connecting support pieces 4 are matched with the magnetic liquid 6 to provide the suspension force of the mass block 5 in the first direction and the second direction, wherein the suspension force in the second direction suspends the mass block 5 to realize lubrication and drag reduction, the suspension force in the first direction forms a magnetic liquid spring with variable stiffness coefficient in the vibration direction of the mass block 5, additional springs are not needed to provide restoring force for the mass block 5, the output power of the kinetic energy collector under the micro-vibration working condition is obviously improved, and the volume of the kinetic energy collector is reduced.
The hollow coil 7 and the flat coil 3 are adopted to collect the kinetic energy of the mass block 5 together, so that the output power of the kinetic energy collector is improved; the flat coil 3 is arranged in the kinetic energy collector sealed cavity 1, so that the distance between the mass block 5 and the flat coil 3 in the first direction is reduced, and the output power of the flat coil 3 is increased, thereby further improving the output power of the permanent magnet double-suspension type magnetic liquid kinetic energy collector.
Example 2:
as shown in fig. 4, the difference from embodiment 1 is that:
the end cap 22 is provided with an end cap through hole along the first direction, and both ends of the connection support 4 penetrate the housing 2 through the pancake coil through hole and the end cap through hole along the first direction and at least partially protrude outside the housing 2. The outer peripheral surfaces of both ends of the connecting support member 4 are provided with threads, and nuts 9 matched with each other are fixed to the threaded portions of the connecting support member 4.
Claims (10)
1. The utility model provides a two suspension formula magnetic fluid kinetic energy collectors of permanent magnet which characterized in that includes: the sealing structure comprises a shell (2) internally provided with a sealing cavity (1) and a mass block (5) positioned in the sealing cavity (1), wherein the shell (2) comprises a hollow cylinder (21) with two open ends, an end cover (22) and a positioning pin (24) with a hole and provided with a positioning pin end cover (23), two ends of the hollow cylinder (21) are sealed through the end cover (22), the sealing cavity (1) is provided with two opposite inner end walls (11) along a first direction, an inner side wall (12) is arranged between the two inner end walls (11), the sectional area of the sealing cavity (1) in a second direction is alternatively increased and decreased along the first direction, and flat coils (3) are fixed at the end faces, close to the mass block (5), of the two end covers (22);
the first direction is the length direction of the shell (2), and the second direction is the direction which is vertical to the first direction and faces the inner side wall (12);
the mass block (5) comprises at least one permanent magnet, the mass block (5) is provided with a mass block through hole (51) along a first direction, a connecting support (4) penetrates through the mass block through hole (51), the connecting support (4) at least partially extends into the shell (2) in the first direction, and the cross section area of the part, between the two inner end walls (11), of the connecting support (4) in a second direction is alternately reduced and increased along the first direction; a magnetic liquid (6) is arranged in the sealed cavity (1), and the mass block (5) is suspended between the shell (2) and the connecting support piece (4) through the magnetic liquid (6);
the shell (2) is provided with two opposite outer end faces (201) along a first direction, and an outer side face (202) between the two outer end faces (201) is sleeved with an air-core coil (7) which collects electric energy together with the flat coil (3).
2. The permanent magnet double suspension type magnetic liquid kinetic energy collector as claimed in claim 1, wherein the connecting support member (4) is provided with a connecting support member first hole (42) along a first direction, both ends of the connecting support member (4) in the first direction are provided with at least one connecting support member second hole (43), and the connecting support member first hole (42) is communicated with the connecting support member second hole (43).
3. The permanent magnet double suspension type magnetic liquid kinetic energy harvester according to claim 1, wherein the maximum cross section of the mass (5) in the second direction is smaller than the minimum cross section of the sealed cavity (1) in the second direction, and the minimum cross section of the mass through hole (51) in the second direction is larger than the maximum cross section of the connecting support (4) in the second direction.
4. The permanent magnet double suspension type magnetic liquid kinetic energy collector as claimed in claim 1, characterized in that the positioning pin (24) with holes penetrates through the hollow cylinder (21) and the end cover (22); the locating pin with the hole (24) is provided with a locating pin through hole (25) communicated with the sealing cavity (1), one end, close to the mass block (5), of the locating pin with the hole (24) does not exceed the inner side wall (12), and the other end of the locating pin with the hole (24) extends out of the outer side face (202) and is sealed through a locating pin end cover (23).
5. The permanent magnet double suspension type magnetic liquid kinetic energy collector as claimed in claim 4, wherein an avoiding hole (241) is formed in the position, extending out of the outer side surface (202), of the positioning pin (24) with the hole, and the interface of the flat coil (3) penetrates through the hollow cylinder (21) and the positioning pin (24) with the hole and penetrates out of the avoiding hole (241) through the positioning pin through hole (25).
6. The permanent magnet double suspension type magnetic liquid kinetic energy collector as claimed in claim 4, wherein the flat coil (3) is provided with a flat coil through hole along a first direction for avoiding the connecting support member (4).
7. The permanent magnet double suspension type magnetic liquid kinetic energy collector as claimed in claim 4, wherein a blind hole (26) is formed in the end face, close to the mass block (5), of the end cover (22), blind hole threads are formed in the circumferential face of the blind hole (26), bosses (41) are arranged on the two end faces of the connecting support member (4) in the first direction, threads matched with the blind hole threads are formed in the circumferential face of each boss (41), and the connecting support member (4) penetrates through the flat coil through hole to be in threaded connection with the end cover (22).
8. The permanent magnet double suspension type magnetic liquid kinetic energy collector as claimed in claim 4, wherein the end cover (22) is provided with an end cover through hole along a first direction, two ends of the connecting support member (4) penetrate through the shell (2) through the end cover through hole along the first direction, at least part of two ends of the connecting support member (4) is located outside the shell (2), and the outer peripheral surfaces of two ends of the connecting support member (4) are connected with nuts (9).
9. The permanent magnet double suspension type magnetic liquid kinetic energy collector as claimed in claim 1, wherein a wire slot (27) is formed in the outer side surface (202) of the shell (2), an air-core coil (7) and a positioning ring (8) are sleeved in the wire slot (27), the positioning ring (8) is close to the bottom of the slot, and two side walls of the wire slot (27) are respectively abutted against the air-core coil (7) or the positioning ring (8).
10. The permanent magnet double suspension type magnetic liquid kinetic energy collector as claimed in claim 1, wherein the shell (2) and the connecting support member (4) are made of non-magnetic conducting materials.
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| CN202110986329.XA CN113676017B (en) | 2021-08-26 | 2021-08-26 | Permanent magnet double-suspension type magnetic liquid kinetic energy collector |
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| CN202110986329.XA CN113676017B (en) | 2021-08-26 | 2021-08-26 | Permanent magnet double-suspension type magnetic liquid kinetic energy collector |
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| CN113676017B true CN113676017B (en) | 2022-08-05 |
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| JP2014187798A (en) * | 2013-03-22 | 2014-10-02 | Panasonic Corp | Energy conversion device |
| CN108374771A (en) * | 2018-01-09 | 2018-08-07 | 殷周平 | Electric vehicle energy recycling device |
| CN109412374A (en) * | 2018-12-05 | 2019-03-01 | 中南大学 | SPA bridge multifrequency electromagnetic energy acquisition-damper |
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