CN116345836A - Small quasi-static electromagnetic power generation device - Google Patents
Small quasi-static electromagnetic power generation device Download PDFInfo
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- CN116345836A CN116345836A CN202310279973.2A CN202310279973A CN116345836A CN 116345836 A CN116345836 A CN 116345836A CN 202310279973 A CN202310279973 A CN 202310279973A CN 116345836 A CN116345836 A CN 116345836A
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- conduction part
- magnetic conduction
- deformation structure
- rigid deformation
- free end
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- 238000010248 power generation Methods 0.000 title claims description 24
- 238000003825 pressing Methods 0.000 claims abstract description 24
- 230000004907 flux Effects 0.000 claims abstract description 20
- 230000005284 excitation Effects 0.000 claims abstract description 17
- 238000004146 energy storage Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 59
- 229910052742 iron Inorganic materials 0.000 description 24
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Classifications
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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
- H02K35/04—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving coil systems and stationary magnets
Abstract
The invention discloses a small quasi-static electromagnetic generating device which is characterized by comprising a permanent magnet, wherein an upper magnetic conduction part and a lower magnetic conduction part are respectively arranged on two magnetic poles of the permanent magnet, and magnetic flux is led to a non-rigid deformation structure magnetic conduction part through the upper magnetic conduction part or the lower magnetic conduction part; one end of the magnetic conduction part of the non-rigid body deformation structure is a fixed end, and the other end is a free end; a generating coil with a fixed position is wound at a position, which is close to the free end, outside the magnetic conduction part of the non-rigid deformation structure, and when the magnetic polarity of the magnetic conduction part of the non-rigid deformation structure is changed, corresponding voltage pulses are induced on the generating coil; the pressing excitation point of the small quasi-static electromagnetic generating device is positioned in the middle of the magnetic conduction part of the non-rigid deformation structure. The invention discloses a small electromagnetic generating device which is compact in structure, simple to assemble, low in production cost, light and thin in size, and has the characteristics of stability, durability, high product yield, good consistency and the like.
Description
Technical Field
The invention relates to a small-sized power generation device, in particular to an electromagnetic power generation device capable of converting mechanical energy into electric energy under the quasi-static motion of Cheng Jiao small and low speed.
Background
Electromagnetic rotary generators are devices which are used daily and can efficiently convert electromechanical energy. However, the existing electromagnetic rotary generator has a large volume and needs continuous rotation of the rotor to generate current, so that the electromagnetic rotary generator cannot be conveniently used in some small-sized scenes (such as power supply of internet of things equipment).
At present, a few small-sized pressing triggering generating devices are also arranged on the market and are used for a battery-free self-generating doorbell and a transmitting end of a self-generating switch. Enough electric energy is instantaneously generated through finger pressing movement so as to supply the radio frequency unit to transmit wireless signals and send remote control instructions to the receiving end.
Existing small self-generating buttons are typically assembled from a number of components, wherein the key components of the monostable self-generating switch include: magnetic iron core, energy buffer spring (shrapnel), restoring spring, permanent magnet, copper coil, force-increasing lever, etc. The existing small-sized self-generating button is high in assembly difficulty, poor in power generation consistency and low in yield. In addition, the more accessories result in higher production cost, and the electromechanical design of the self-generating push-button switch is further optimized through deep theoretical analysis and mechanical design.
Disclosure of Invention
The invention aims to solve the technical problems that: the existing self-power-generation button switch is high in assembly difficulty, poor in power generation consistency of products, low in yield and high in production cost due to the fact that accessories are more.
In order to solve the technical problems, the technical scheme of the invention provides a small quasi-static electromagnetic generating device, which is characterized by comprising a permanent magnet, wherein an upper magnetic conduction part and a lower magnetic conduction part are respectively arranged on two magnetic poles of the permanent magnet, a gap is formed between the upper magnetic conduction part and the lower magnetic conduction part, and magnetic flux is led to a non-rigid deformation structure magnetic conduction part through the upper magnetic conduction part or the lower magnetic conduction part; one end of the non-rigid deformation structure magnetic conduction part is a fixed end, the other end of the non-rigid deformation structure magnetic conduction part is a free end, the free end of the non-rigid deformation structure magnetic conduction part is positioned in a gap between the upper magnetic conduction part and the lower magnetic conduction part and can move up and down in the gap, the free end of the non-rigid deformation structure magnetic conduction part is adsorbed by the upper magnetic conduction part or the lower magnetic conduction part when in a static state, the free end of the non-rigid deformation structure magnetic conduction part can be adsorbed by the lower magnetic conduction part or the upper magnetic conduction part after moving up and down, and the free end of the non-rigid deformation structure magnetic conduction part is provided with the same magnetic polarity as the upper magnetic conduction part or the lower magnetic conduction part which is contacted with the free end; a generating coil with a fixed position is wound at a position, which is close to the free end, outside the magnetic conduction part of the non-rigid deformation structure, and when the magnetic polarity of the magnetic conduction part of the non-rigid deformation structure is changed, corresponding voltage pulses are induced on the generating coil; the pressing excitation point of the small quasi-static electromagnetic generating device is positioned in the middle of the magnetic conduction part of the non-rigid deformation structure, the part of the magnetic conduction part of the non-rigid deformation structure between the pressing excitation point and the fixed end serves as a restoring spring of the monostable self-generating switch, the part of the magnetic conduction part of the non-rigid deformation structure between the pressing excitation point and the free end serves as an energy storage spring of the monostable self-generating switch, and the leverage of the magnetic conduction part of the non-rigid deformation structure is added to jointly complete the monostable self-generating switch function of reducing and increasing force.
Preferably, the upper and lower magnetically permeable portions are wider than the permanent magnet such that the gap is formed between the upper and lower magnetically permeable portions.
Preferably, the permanent magnet, the upper magnetic conductive portion and the lower magnetic conductive portion form a combination.
Preferably, the vertical movement amplitude of the free end of the non-rigid deformation structure magnetic conduction part is limited by the upper magnetic conduction part and the lower magnetic conduction part.
Preferably, when the free end of the non-rigid deformation structure magnetic conductive part is attracted by the upper magnetic conductive part or the lower magnetic conductive part in a static state, the magnetic flux of the part between the pressing excitation point and the free end of the non-rigid deformation structure magnetic conductive part is phi 0 The method comprises the steps of carrying out a first treatment on the surface of the When the non-rigid deformation structure magnetic conduction part moves up and down under the action of external force to be absorbed by the lower magnetic conduction part or the upper magnetic conduction part, the magnetic flux of the part between the pressing excitation point and the free end of the non-rigid deformation structure magnetic conduction part changes to 2 phi 0 The instantaneously changing magnetic flux induces a positive voltage pulse in the generating coil; when the external force is removed, the non-rigid deformation structure magnetic conduction part is restored to be absorbed by the upper magnetic conduction part or the lower magnetic conduction part, and the magnetic flux of the part between the pressing excitation point and the free end of the non-rigid deformation structure magnetic conduction part is changed to-2Φ 0 Instantaneous stateThe varying magnetic flux induces a negative voltage pulse in the power generating coil.
The invention discloses a small electromagnetic generating device which is compact in structure, simple to assemble, low in production cost, light and thin in size, and has the characteristics of stability, durability, high product yield, good consistency and the like.
Compared with the existing small-sized self-generating button, the invention has the following beneficial effects:
1. simple structure, convenient assembly, good product consistency, extremely low production cost and large market competitiveness.
2. The iron core, the energy storage spring, the recovery spring and the mechanical lever which form the monostable small electromagnetic generator are integrated together by using a deformable iron cantilever beam with a very simple structure, so that the basic functions of the monostable self-generating switch are completely realized.
Drawings
FIG. 1 is a schematic diagram of the mechanical structure of the present invention;
FIG. 2 is a schematic diagram of the working phase of the present invention;
FIG. 3 is an exploded view of an assembly of a mechanical embodiment of the present invention;
FIG. 4 is a diagram of a theoretical analysis model of the present invention;
FIG. 5 illustrates the relationship of the pressing force to travel of the present invention;
fig. 6 illustrates a voltage waveform output from an electromagnetic induction coil according to the present invention.
Detailed Description
The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
As shown in fig. 1, the ultrathin electromagnetic power generation device disclosed in the present embodiment comprises a permanent magnet 8, an upper magnetic conductive iron sheet 6, a lower magnetic conductive iron sheet 7, a cantilever Liang Daoci iron core 2, a power generation coil 4 (copper coil in the present embodiment) and a housing 1 (including a coil holder for fixing the power generation coil 4).
The permanent magnet 8, the upper magnetic conductive iron sheet 6, the lower magnetic conductive iron sheet 7, the cantilever Liang Daoci iron core 2 and the power generation coil 4 are all arranged on the shell 1. The upper and lower magnetically conductive iron pieces 6 and 7 wider than the permanent magnet 8 are attached to the north and south poles of the permanent magnet 8 for guiding the magnetic flux 5 to the cantilever Liang Daoci core 2. In this embodiment, the permanent magnet 8, the upper magnetically conductive iron sheet 6 and the lower magnetically conductive iron sheet 7 form a combination body, which is fixed to the right side end of the housing 1. The left end O of the cantilever Liang Daoci iron core 2 is clamped at the left side section and the right end B of the housing 1 to be free movement ends, the right end B of the cantilever Liang Daoci iron core 2 is acted by the magnetic force of the upper magnetic conductive iron sheet 6 and the lower magnetic conductive iron sheet 7, can move up and down in a gap between the upper magnetic conductive iron sheet 6 and the lower magnetic conductive iron sheet 7, can be adsorbed by the upper magnetic conductive iron sheet 6 or the lower magnetic conductive iron sheet 7, and has the same magnetic polarity as the upper magnetic conductive iron sheet 6 or the lower magnetic conductive iron sheet 7 which are in contact. The upper magnetic conductive iron sheet 6 and the lower magnetic conductive iron sheet 7 also play a limiting role on the right end B of the cantilever Liang Daoci iron core 2. The cantilever Liang Daoci iron core 2 is wound with a power generation coil 4 near the right end B, the power generation coil 4 is fixed on a coil seat of the housing 1, and when the magnetic polarity of the cantilever Liang Daoci iron core 2 is changed, a corresponding voltage pulse is induced on the power generation coil 4.
The pressing excitation point a of the electromagnetic power generation device disclosed in the present embodiment is located in the middle of the core 2 of the cantilever Liang Daoci. The part (hereinafter referred to as "OA section") of the cantilever Liang Daoci core 2 between the pressing excitation point a and the left end O serves as a restoring spring of the monostable self-generating switch, while the part (hereinafter referred to as "AB section") of the cantilever Liang Daoci core 2 between the pressing excitation point a and the right end B serves as an energy storage spring of the monostable self-generating switch, and the leverage of the cantilever Liang Daoci core 2 itself jointly completes a monostable self-generating switch function of reducing and increasing force.
As shown in fig. 2, the present invention is designed to operate from rest position # 1 when the magnetic flux of the AB segment of core 2 through cantilever Liang Daoci is Φ 0 . The pressing excitation point A of the cantilever Liang Daoci iron core 2 is pressed by applying a pressure F, which generates a tiny deformation of the middle recessReaching position # 2, the magnetic flux remains Φ 0 . When the pressure F exceeds a certain critical value, the right end B breaks away from the magnetic attraction of the upper magnetic conductive iron sheet 6, quickly strikes the lower magnetic conductive iron sheet 7, reaches the position # 3, and changes the magnetic flux to 2Φ 0 . The instantaneously changing magnetic flux induces a positive voltage pulse in the power generation coil 4. After the trigger is pressed, the applied pressure F is slowly reduced, the cantilever Liang Daoci iron core 2 returns to the position # 1, and the release process is accompanied by a reverse rapid magnetic flux change of-2 phi 0 A negative voltage pulse is induced in the power generating coil 4.
Fig. 3 illustrates a mechanical embodiment of the slim type electromagnetic power generation device described above, in which the cantilever Liang Daoci core 2, the permanent magnet 8, the upper magnetically permeable iron sheet 6, the lower magnetically permeable iron sheet 7 and the power generation coil 4 are mounted in a plastic housing 1 having a stationary and stepped design therein.
Fig. 4 illustrates a mechanical model of the structure disclosed in this embodiment, where the OA section and the AB section of the core of the cantilever Liang Daoci are equivalent to two linear springs respectively, which function as a restoring spring and an energy storage spring. The magnetic force applied to the right end B of the core 2 of the cantilever Liang Daoci, as shown in fig. 4 (B) and fig. 4 (c), provides a non-linear negative stiffness as a function of (d) in fig. 4. The upper magnetic conductive iron sheet 6 and the lower magnetic conductive iron sheet 7 have a distance of 2d, so that a mechanical limiting effect is achieved, and the mechanical function relationship is shown in (e) in fig. 4.
Fig. 5 illustrates the relationship of the pressing force F to the stroke. The starting point starts to press down along the oblique line moving beyond the original point until a certain critical displacement is reached, the pressing force F jumps, and the force amplitude is reduced. The force release and return process moves along oblique lines, passes through the critical value of another smaller stroke, the pressing force F jumps for another time, and the force amplitude is increased. Continuing to release and returning to the starting point.
Fig. 6 illustrates the voltage waveform induced by the power generation coil 4 under the trigger of pressing and releasing twice. The two triggers are generated as a positive voltage pulse and a negative voltage pulse, respectively, of a width in the order of milliseconds. The amplitude of the pulse depends on factors such as magnetic flux, magnetic plate spacing, cantilever beam stiffness, etc.
Compared with the existing design, the design structure in the embodiment is extremely simple and compact, and the ultrathin small-sized power generation device can be manufactured, so that the defects of various design parts, complex assembly, high production cost and the like in the prior art are overcome. The output voltage pulse can be processed by the electric energy conversion circuit to be supplied to the ultra-low power consumption electronic module of the Internet of things for work, and the ultra-low power consumption electronic module is used for various Internet of things applications requiring simple information communication, such as self-generating doorbell, self-generating switch, self-generating remote control, self-generating interaction panel, self-generating calling bell and the like.
Claims (5)
1. The small quasi-static electromagnetic power generation device is characterized by comprising a permanent magnet, wherein an upper magnetic conduction part and a lower magnetic conduction part are respectively arranged on two magnetic poles of the permanent magnet, a gap is formed between the upper magnetic conduction part and the lower magnetic conduction part, and magnetic flux is guided to a non-rigid deformation structure magnetic conduction part through the upper magnetic conduction part or the lower magnetic conduction part; one end of the non-rigid deformation structure magnetic conduction part is a fixed end, the other end of the non-rigid deformation structure magnetic conduction part is a free end, the free end of the non-rigid deformation structure magnetic conduction part is positioned in a gap between the upper magnetic conduction part and the lower magnetic conduction part and can move up and down in the gap, the free end of the non-rigid deformation structure magnetic conduction part is adsorbed by the upper magnetic conduction part or the lower magnetic conduction part when in a static state, the free end of the non-rigid deformation structure magnetic conduction part can be adsorbed by the lower magnetic conduction part or the upper magnetic conduction part after moving up and down, and the free end of the non-rigid deformation structure magnetic conduction part is provided with the same magnetic polarity as the upper magnetic conduction part or the lower magnetic conduction part which is contacted with the free end; a generating coil with a fixed position is wound at a position, which is close to the free end, outside the magnetic conduction part of the non-rigid deformation structure, and when the magnetic polarity of the magnetic conduction part of the non-rigid deformation structure is changed, corresponding voltage pulses are induced on the generating coil; the pressing excitation point of the small quasi-static electromagnetic generating device is positioned in the middle of the magnetic conduction part of the non-rigid deformation structure, the part of the magnetic conduction part of the non-rigid deformation structure between the pressing excitation point and the fixed end serves as a restoring spring of the monostable self-generating switch, the part of the magnetic conduction part of the non-rigid deformation structure between the pressing excitation point and the free end serves as an energy storage spring of the monostable self-generating switch, and the leverage of the magnetic conduction part of the non-rigid deformation structure is added to jointly complete the monostable self-generating switch function of reducing and increasing force.
2. A compact quasi-static electromagnetic power generation device according to claim 1, wherein the upper and lower magnetically permeable portions are wider than the permanent magnets such that the gap is formed between the upper and lower magnetically permeable portions.
3. A compact quasi-static electromagnetic power generation device according to claim 1, wherein the permanent magnet, the upper magnetically permeable portion and the lower magnetically permeable portion form a combination.
4. The small quasi-static electromagnetic power generation device according to claim 1, wherein the vertical movement amplitude of the free end of the magnetically permeable portion of the non-rigid body-deforming structure is limited by the upper magnetically permeable portion and the lower magnetically permeable portion.
5. The small quasi-static electromagnetic power generator of claim 1, wherein when the free end of the magnetically permeable portion of the non-rigid deformable structure is attracted by the upper magnetically permeable portion or the lower magnetically permeable portion in a stationary state, the magnetic flux of the portion of the magnetically permeable portion of the non-rigid deformable structure located between the pressing excitation point and the free end is Φ 0 The method comprises the steps of carrying out a first treatment on the surface of the When the non-rigid deformation structure magnetic conduction part moves up and down under the action of external force to be absorbed by the lower magnetic conduction part or the upper magnetic conduction part, the magnetic flux of the part between the pressing excitation point and the free end of the non-rigid deformation structure magnetic conduction part changes to 2 phi 0 The instantaneously changing magnetic flux induces a positive voltage pulse in the generating coil; when the external force is removed, the non-rigid deformation structure magnetic conduction part is restored to be absorbed by the upper magnetic conduction part or the lower magnetic conduction part, and the magnetic flux of the part between the pressing excitation point and the free end of the non-rigid deformation structure magnetic conduction part is changed to-2Φ 0 The instantaneously changing magnetic flux induces a negative voltage pulse in the power generating coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310279973.2A CN116345836A (en) | 2023-03-20 | 2023-03-20 | Small quasi-static electromagnetic power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310279973.2A CN116345836A (en) | 2023-03-20 | 2023-03-20 | Small quasi-static electromagnetic power generation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116345836A true CN116345836A (en) | 2023-06-27 |
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ID=86885175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310279973.2A Pending CN116345836A (en) | 2023-03-20 | 2023-03-20 | Small quasi-static electromagnetic power generation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116345836A (en) |
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2023
- 2023-03-20 CN CN202310279973.2A patent/CN116345836A/en active Pending
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