Energy-taking iron core structure, electricity-taking device and fault monitoring device
By designing an arc-shaped iron core structure and an air gap design, the problems of leakage magnetic field and magnetic saturation of the energy harvesting iron core are solved, improving the output power and stability, and making it suitable for fault monitoring devices of cable collector lines in wind farms.
Patent Information
- Application Number
- CN202520323282.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Existing energy harvesting core structures suffer from magnetic leakage and an excessively low magnetic saturation threshold, resulting in low output power.
It adopts a ring structure composed of at least two arc-shaped iron cores. The first end of the arc-shaped iron core is provided with a protrusion, and the second end is provided with a groove. There is an air gap between two adjacent arc-shaped iron cores, and they are electrically connected by winding iron core coils. The outer shell is protected by a plastic shell and filled with resin potting compound.
It achieves precise alignment between iron cores, reduces magnetic leakage, expands the magnetic saturation threshold, and improves output power and equipment operation stability.
Smart Images
Figure CN223871294U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of electronic equipment technology, and in particular relates to an energy harvesting core structure, an energy harvester, and a fault monitoring device. Background Technology
[0002] In wind farms, cable collector lines are the key carriers for power transmission, typically three-core collector cables, on which online cable fault monitoring devices are usually installed. These monitoring devices are usually located in outdoor environments and often require power coupling from an energy-harvesting iron core to maintain normal operation.
[0003] Existing power harvesting core structures are typically halved for quick and easy installation. However, this method makes it difficult to ensure precise alignment of the cut planes, resulting in significant magnetic leakage and affecting the output power of the power harvesting core. Furthermore, the current fluctuation range in cable collector lines is large; if the magnetic saturation threshold of the power harvesting core is too low, it will also affect its output power. Utility Model Content
[0004] This application provides an energy harvesting core structure, which aims to solve the problem of low output power of existing energy harvesting cells.
[0005] The embodiments of this application are implemented as follows: an energy harvesting core structure is provided, including at least two arc-shaped cores forming a ring. The first end of the arc-shaped core is provided with a plurality of protrusions, and the second end of the arc-shaped core is provided with a plurality of grooves that cooperate with the protrusions. At least a partial air gap exists between the protrusions and grooves between two adjacent arc-shaped cores.
[0006] Furthermore, the protrusions are at least one of wavy, rectangular, and serrated shapes.
[0007] Furthermore, it also includes core wire coils wound on an arc-shaped iron core, the core wire coils having positive and negative leads.
[0008] Furthermore, in two adjacent iron core coil turns, the positive lead of one iron core coil turn is electrically connected to the negative lead of the other iron core coil turn.
[0009] Secondly, this application also provides a power collector, comprising:
[0010] The outer casing has a housing space;
[0011] Leads provided on the housing; and
[0012] An energy-harvesting core structure, as described above, is installed in the accommodating space;
[0013] The energy-harvesting core structure is electrically connected to the lead wires.
[0014] Furthermore, the housing includes:
[0015] Plastic shell, the plastic shell has an opening;
[0016] A cover plate is placed over the opening, and the cover plate and the plastic shell together form the containing space.
[0017] Furthermore, resin potting compound is provided in the gap between the energy extraction core structure and the outer shell.
[0018] Furthermore, the plastic shell includes two semi-circular shells, one end of which is hinged, and the other end of which is provided with a rotating bayonet.
[0019] Furthermore, it also includes an explosion-proof connector, through which the lead wire is fixedly connected to the housing.
[0020] Thirdly, this application also provides a fault monitoring device, including the power collector as described above.
[0021] The beneficial effects of this application are as follows: The energy harvesting core structure provided by this application includes at least two arc-shaped cores forming a ring. The first end of each arc-shaped core has several protrusions, and the second end has several grooves that mate with the protrusions. At least a partial air gap exists between the protrusions and grooves of adjacent arc-shaped cores. Through this cooperation, the cut surfaces between the cores are effectively aligned precisely, eliminating magnetic leakage and ensuring the core's output power. Furthermore, the air gap between adjacent arc-shaped cores, due to the lower permeability of air at the air gap compared to the core material, increases the equivalent magnetic reluctance of the core, thereby expanding the magnetic saturation threshold and making it less likely for the core to reach saturation, further ensuring the core's output power. Attached Figure Description
[0022] Figure 1 This is a schematic diagram showing the disassembled structure of one embodiment of the energy harvesting core structure provided in this application;
[0023] Figure 2 This is a schematic diagram of the assembly structure of one embodiment of the energy harvesting core structure provided in this application;
[0024] Figure 3 This is a schematic diagram of an embodiment of the energy harvesting core structure provided in this application, showing the core with wire turns wound around it.
[0025] Figure 4 This is a top view schematic diagram of an embodiment of the energy harvesting core structure provided in this application, showing the core with wire turns wound around it;
[0026] Figure 5 This is a schematic diagram of an embodiment of the energy harvesting core structure provided in this application, with an outer shell provided.
[0027] Figure 6This is a schematic diagram of an embodiment of the energy harvesting core structure provided in this application, showing a serrated protrusion.
[0028] Figure 7 This is a schematic diagram of an embodiment of the energy harvesting core structure provided in this application, showing a rectangular protrusion.
[0029] Explanation of reference numerals in the attached diagram: 100-arc-shaped iron core, 110-protrusion, 120-groove, 200-air gap, 300-iron core wire coil, 310-positive lead, 320-negative lead, 400-lead wire, 500-outer shell, 510-plastic shell, 520-cover plate, 530-fixing bolt, 540-rotary bayonet, 600-explosion-proof connector, 700-resin potting compound. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. Examples of embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application.
[0031] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0035] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference values and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0036] The energy-harvesting core structure provided in this application includes at least two arc-shaped cores forming a ring. The first end of each arc-shaped core has several protrusions, and the second end has several grooves that mate with the protrusions. At least a partial air gap exists between the protrusions and grooves of adjacent arc-shaped cores. This cooperation effectively ensures precise alignment of the cut surfaces between the cores, eliminating magnetic leakage and guaranteeing the core's output power. Furthermore, the air gap between adjacent arc-shaped cores, due to the lower permeability of air at the air gap compared to the core material, increases the equivalent magnetic reluctance of the core, thereby expanding the magnetic saturation threshold and making it less likely for the core to reach saturation, further ensuring the core's output power.
[0037] like Figures 1 to 7As shown, one embodiment of this application provides an energy harvesting core structure, including at least two arc-shaped cores 100 forming a ring. The first end of the arc-shaped core 100 is provided with a plurality of protrusions 110, and the second end of the arc-shaped core 100 is provided with a plurality of grooves 120 that cooperate with the protrusions 110. At least a partial air gap 200 exists between the protrusions 110 and the grooves 120 between two adjacent arc-shaped cores 100.
[0038] In practice, the energy harvesting core structure provided in this application consists of at least two arc-shaped cores 100, such as 2, 4, 6, or 8 arc-shaped cores 100, without limitation.
[0039] For example, taking four arc-shaped iron cores 100 as an example, such as Figure 1 and Figure 2 As shown. The iron core, consisting of at least two arc-shaped iron cores encircling each other by 100, forms a circular ring structure. Wire turns can be wound around it to achieve coupling and power extraction, which will not be elaborated further.
[0040] The arc-shaped iron core 100 is arc-shaped, with a protrusion 110 and a groove 120 at each end. During assembly, the protrusion 110 can be inserted into the groove 120 to assemble the two arc-shaped iron cores 100, ensuring precise alignment of the cut surfaces between the two arc-shaped iron cores 100, eliminating magnetic leakage, and guaranteeing the output power of the iron core.
[0041] Optionally, the protrusion 110 can be at least one of wavy, rectangular and serrated. Similarly, the groove 120 can also be designed as at least one of wavy, rectangular and serrated, with wavy being preferred, but not limited thereto.
[0042] When two arc-shaped iron cores 100 are assembled together, there is at least a partial air gap 200 between the protrusions 110 and grooves 120 of the two adjacent arc-shaped iron cores 100. Since the magnetic permeability of the air at the air gap 200 is lower than the magnetic permeability of the iron core material, the equivalent magnetic reluctance of the iron core increases, thereby expanding the magnetic saturation threshold, making it difficult for the iron core to reach saturation, and further ensuring the output power of the iron core.
[0043] Furthermore, it also includes core wire turns 300 wound on the arc-shaped core 100. The core wire turns 300 are made of enameled wire, such as... Figure 3 Number and Figure 4 As shown. The iron core wire coil 300 has a positive lead 310 and a negative lead 320, which are electrically connected to an external circuit to realize the corresponding functions.
[0044] In two adjacent iron core wire turns 300, the positive lead 310 of one iron core wire turn 300 is electrically connected to the negative lead 320 of the other iron core wire turn 300. For example, as shown... Figure 3 Number and Figure 4 As shown, the core turns 300 of two adjacent arc-shaped iron cores 100 are connected in series, such as AB / CD or AD / BC. For example, the negative lead of the core turn 300 in part A is electrically connected to the positive lead of the core turn 300 in part B. This is not elaborated further, thus maximizing the magnetic induction voltage of the energy-harvesting iron core. The energy-harvesting iron core structure of this application adopts a segmented turn structure. Coupled power extraction in a three-core cable can reduce the influence of magnetic field vector superposition attenuation, improve the output voltage of the energy-harvesting iron core, and ensure the stability of equipment operation.
[0045] Secondly, such as Figure 5 As shown, this application also provides a power collector, comprising:
[0046] The outer casing 500 has a receiving space;
[0047] Lead wire 400 provided on housing 500; and
[0048] An energy-harvesting core structure, as described above, is installed in the accommodating space;
[0049] The energy extraction core structure is electrically connected to the lead wire 400.
[0050] In implementation, the outer casing 500 is made of plastic or other materials with insulating properties to protect the energy harvesting cell structure. The coils of the energy harvesting cell structure are electrically connected to the lead wire 400, thereby connecting it to an external circuit via the lead wire 400.
[0051] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the structure and implementation principle of the power collector described above can be referred to the corresponding structure and implementation principle in the foregoing embodiments, and will not be repeated here.
[0052] The energy-harvesting core structure provided in this application includes at least two arc-shaped cores 100 forming a ring. Each arc-shaped core 100 has a plurality of protrusions 110 at its first end and a plurality of grooves 120 at its second end that mate with the protrusions 110. At least a partial air gap 200 exists between the protrusions 110 and grooves 120 of adjacent arc-shaped cores 100. This cooperation effectively ensures precise alignment of the cut surfaces between the cores, eliminating magnetic leakage and guaranteeing the core's output power. Furthermore, the air gap 200 between adjacent arc-shaped cores 100, due to the lower permeability of air at the air gap 200 compared to the core material, increases the equivalent magnetic reluctance of the core, thereby expanding the magnetic saturation threshold and making it less likely for the core to reach saturation, further ensuring the core's output power.
[0053] Furthermore, the housing 500 includes:
[0054] Plastic shell 510, plastic shell 510 has an opening;
[0055] A cover plate 520 is placed over the opening, and the cover plate 520 and the plastic shell 510 together form an accommodating space.
[0056] The plastic shell 510 is a cylindrical shape with an open top, allowing the energy harvesting cell structure to be placed inside the plastic shell 510. For example, the plastic shell 510 includes two semi-circular shells, one end of which is hinged, and the other end of which is provided with a rotating bayonet 540, which facilitates the opening and closing of the energy harvesting cell structure, making installation convenient and simple.
[0057] The cover plate 520 covers the opening of the plastic shell 510. For example, the cover plate 520 can be fixed to the opening of the plastic shell 510 by fixing bolts 530, together forming the whole part of the energy harvesting cell.
[0058] Furthermore, when the energy harvesting core structure is installed in the housing 500, there are gaps between the energy harvesting core structure and the housing 500. These gaps are filled with resin potting compound 700 to internally fix the energy harvesting core structure.
[0059] Furthermore, it also includes an explosion-proof connector 600, through which the lead wire 400 is fixedly connected to the housing 500.
[0060] Thirdly, this application also provides a fault monitoring device, including the power collector as described above.
[0061] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the structure and implementation principle of the fault monitoring device described above can be referred to the corresponding structure and implementation principle in the foregoing embodiments, and will not be repeated here.
[0062] The energy-harvesting core structure provided in this application includes at least two arc-shaped cores 100 forming a ring. Each arc-shaped core 100 has a plurality of protrusions 110 at its first end and a plurality of grooves 120 at its second end that mate with the protrusions 110. At least a partial air gap 200 exists between the protrusions 110 and grooves 120 of adjacent arc-shaped cores 100. This cooperation effectively ensures precise alignment of the cut surfaces between the cores, eliminating magnetic leakage and guaranteeing the core's output power. Furthermore, the air gap 200 between adjacent arc-shaped cores 100, due to the lower permeability of air at the air gap 200 compared to the core material, increases the equivalent magnetic reluctance of the core, thereby expanding the magnetic saturation threshold and making it less likely for the core to reach saturation, further ensuring the core's output power.
[0063] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An energy-harvesting core structure, characterized in that, The device includes at least two arc-shaped iron cores that form a ring. The first end of each arc-shaped iron core has a plurality of protrusions, and the second end of each arc-shaped iron core has a plurality of grooves that cooperate with the protrusions. At least a partial air gap exists between the protrusions and the grooves between two adjacent arc-shaped iron cores.
2. The energy-harvesting core structure as described in claim 1, characterized in that, The protrusion is at least one of the following: wavy, rectangular, and serrated.
3. The energy-harvesting core structure as described in claim 1, characterized in that, It also includes core wire turns wound on the arc-shaped iron core, the core wire turns having positive leads and negative leads.
4. The energy-harvesting core structure as described in claim 3, characterized in that, In two adjacent iron core wire turns, the positive lead of one iron core wire turn is electrically connected to the negative lead of the other iron core wire turn.
5. A power collector, characterized in that, include: An outer casing having a receiving space; as well as Lead wires are provided on the outer casing; The energy-harvesting core structure as described in any one of claims 1 to 4 is disposed in the accommodating space; The energy-harvesting core structure is electrically connected to the lead wire.
6. The power collector as described in claim 5, characterized in that, The outer casing includes: A plastic shell having an opening; A cover plate is placed over the opening, and the cover plate and the plastic shell together form the receiving space.
7. The power collector as described in claim 5 or 6, characterized in that, The gap between the energy harvesting core structure and the outer shell is filled with resin potting compound.
8. The power collector as described in claim 6, characterized in that, The plastic shell includes two semi-circular shells, one end of which is hinged together, and the other end of which is provided with a rotating bayonet.
9. The power collector as described in claim 5, characterized in that, It also includes an explosion-proof connector, through which the lead wire is fixedly connected to the housing.
10. A fault monitoring device, characterized in that, Includes the power collector as described in any one of claims 5 to 9.