Three-way alternating magnetic field energy collection device based on alternating magnetic field

Abstract

The utility model belongs to the field of energy collection, and particularly relates to a three-way alternating magnetic field energy collection device based on an alternating magnetic field, which comprises a shell, a piezoelectric plate, I-shaped magnetic cores, a coil and an energy collection PCB (Printed Circuit Board) are fixed in the shell, the piezoelectric plate is positioned on the bottom surface in the shell, the I-shaped magnetic cores are arranged on the two sides of the piezoelectric plate, and the coil is arranged on the energy collection PCB. A coil is connected between the I-shaped magnetic cores, the coil is located above the piezoelectric plate, an energy collection PCB is arranged above the I-shaped magnetic cores and the coil, and a cover plate is arranged on the top of the shell. The single energy collector can collect energy of various environments at the same time, magnetic field energy in the environments is collected through the magnetic core and the coils on the magnetic core, the number of layers of the coils on the magnetic core can be modified according to the field magnetic field intensity, and the larger the number of layers of the coils is, the higher the output voltage of the coils is.

Description

Technical Field

[0001] This application belongs to the field of energy harvesting, and particularly relates to a three-way alternating magnetic field energy harvesting device based on an alternating magnetic field. Background Art

[0002] Electric power is one of the essential infrastructures for social development and operation. Large-scale generating sets are the core components of the power system. By converting mechanical energy into electrical energy, they provide the necessary power and energy for various infrastructures and production activities, including household electricity, factory production, transportation, medical facilities, etc., supporting various infrastructures and production activities in modern society. The stable operation of large-scale generating sets is closely related to people's quality of life, industrial production, and the country's economic development, directly affecting the country's economic development and social stability.

[0003] Monitoring parameters such as temperature, vibration, noise, and strain during the operation of large-scale power generation equipment is of great significance for ensuring the safety and reliability of the equipment. On the one hand, monitoring the operating parameters can protect the equipment components and prevent equipment failures. The stator and rotor are the core components of the generator, which undertake the electromagnetic conversion between the rotor magnetic field and the stator winding. By monitoring the temperature of the stator and rotor, overheating of the equipment can be prevented, insulating materials can be protected, winding thermal stress can be avoided, and the aging and damage of mechanical components caused by high temperature can be prevented. Abnormal parameters such as too high temperature may indicate problems such as bearing wear or imbalance. By monitoring these parameters, potential mechanical failures can be detected early, maintenance measures can be taken, and equipment downtime and damage can be avoided. On the other hand, by monitoring parameters such as temperature, it plays an important role in improving the operating efficiency of the equipment and ensuring equipment safety. By monitoring operating parameters such as temperature, the operating conditions of the power generation equipment can be optimized, and its efficiency and performance can be improved. Problems are discovered and solved in a timely manner to ensure that the equipment operates in the best state, reducing energy waste and maintenance costs. At the same time, monitoring the equipment operating parameters can help detect potential structural problems and reduce the occurrence of accidents.

[0004] Due to the narrow space and high-speed rotation of the power generation equipment, wired power supply cannot ensure the sustainability and safety of the monitoring system. Therefore, it is necessary to develop an environmental energy harvester to supply power to the monitoring equipment. Summary of the Invention

[0005] In order to overcome the power supply problem of the on-site monitoring equipment for generating sets, a three-way alternating magnetic field energy harvesting device based on an alternating magnetic field is now proposed.

[0006] To achieve the above technical effects, the solution of this application is as follows:

[0007] A three-way alternating magnetic field energy harvesting device based on an alternating magnetic field, comprising a housing. Inside the housing, a piezoelectric sheet, an I-shaped magnetic core, a coil, and an energy harvesting PCB are fixed. The piezoelectric sheet is located on the inner bottom surface of the housing. On both sides of the piezoelectric sheet, there are I-shaped magnetic cores. A coil is connected between the I-shaped magnetic cores and is located above the piezoelectric sheet. An energy harvesting PCB is arranged above the I-shaped magnetic core and the coil. A cover plate is provided on the top of the housing.

[0008] Further, two connection terminals are provided on the piezoelectric sheet; there are six connection terminals on the energy harvesting PCB, namely two coil input connection terminals, two piezoelectric sheet input connection terminals, and two output connection terminals. The piezoelectric sheet and the coil are connected to the energy harvesting PCB through the connection terminals, and the energy harvesting PCB outputs energy through the connection terminals.

[0009] Further, a gasket is provided between the cover plate and the housing.

[0010] Further, the core material in the I-shaped magnetic core and the coil is selected as 45 steel, and the coil is wound with oxygen-free pure copper enameled wire.

[0011] Further, the lower surface of the I-shaped magnetic core fits with the inner bottom surface of the housing. The I-shaped magnetic core is attached to the inner side surface and the inner bottom surface of the housing. The piezoelectric sheet is attached between the inner sides of the two I-shaped magnetic cores and is located on the inner bottom surface of the housing.

[0012] Further, the housing and the cover plate are made of aluminum alloy.

[0013] Further, magnetic core fixing screw holes are provided on the left and right side surfaces of the housing, cover plate fixing screw holes are provided on the cover plate, and housing fixing holes are provided on the bottom surface of the housing.

[0014] Further, the piezoelectric sheet is fixed to the inner bottom surface of the housing with glue, and the I-shaped magnetic core is relatively fixed to the housing through the magnetic core fixing screw holes on both sides of the housing using screws.

[0015] Further, an output connector is connected to the cover plate.

[0016] The usage method of the device in this application is as follows:

[0017] S1. Adjust the number of coil layers and turns on the I-shaped magnetic core and the coil according to the on-site magnetic field intensity.

[0018] S2. Connect the output connection terminals of the piezoelectric sheet and the coil to the energy harvesting PCB through soldering and wires, and connect the output of the energy harvesting PCB to the output connector.

[0019] S3. Relatively fix the I-shaped magnetic core to the housing through the magnetic core fixing screw holes on the housing.

[0020] S4. Fix the housing in the alternating magnetic field environment through the housing fixing holes on the bottom surface of the housing.

[0021] S5. Install the washer.

[0022] S6. Fix the cover plate to the housing through the cover plate fixing screw holes on the cover plate.

[0023] The utility model has the following beneficial effects:

[0024] 1. This application realizes the collection of multiple environmental energies by a single energy collector. The magnetic field energy in the environment is collected through the I-shaped magnetic core and the coil on the I-shaped magnetic core. The number of coil layers on the I-shaped magnetic core can be modified according to the on-site magnetic field intensity. The more the number of coil layers, the higher the output voltage of the coil.

[0025] 2. This application collects vibration energy through the piezoelectric sheet. In the alternating magnetic field, the I-shaped magnetic core will generate vibration, driving the housing and then driving the piezoelectric sheet to generate vibration, so that the piezoelectric sheet outputs voltage.

[0026] 3. This application is easy to install, stable and reliable, especially suitable for the alternating magnetic field environment. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the overall structure of this application.

[0028] Figure 2 It is a schematic diagram of the housing of this application.

[0029] Figure 3 It is a schematic diagram of the I-shaped magnetic core and the coil of this application.

[0030] Figure 4 It is a schematic diagram of the piezoelectric sheet of this application.

[0031] Figure 5 It is a schematic diagram of the PCB of this application.

[0032] Figure 6 It is a schematic diagram of the cover plate and the connector of this application.

[0033] In the drawings:

[0034] 101 - housing, 102 - piezoelectric sheet, 103 - I-shaped magnetic core, 104 - coil, 105 - energy collection PCB, 106 - cover plate, 107 - terminal, 108 - washer, 109 - magnetic core fixing screw hole, 110 - cover plate fixing screw hole, 111 - housing fixing hole, 112 - output connector. Detailed Embodiments

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. The components of the embodiments of this application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application that is claimed, but merely represents selected embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts fall within the scope of protection of this application.

[0037] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0038] In the description of this application, it should be noted that the orientation or positional relationships indicated by the terms "upper", "vertical", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships in which the products of this application are usually placed during use, or the orientation or positional relationships commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0039] In the description of this application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Embodiment 1

[0041] As Figure 1As shown in the figure, a three-way alternating magnetic field energy harvesting device based on an alternating magnetic field includes a housing 101. Inside the housing 101, a piezoelectric sheet 102, an I-shaped magnetic core 103, a coil 104 (it is found through simulation that under the same other conditions, the output voltage generated by the coil 104 on the I-shaped magnetic core is the highest), and an energy harvesting PCB 105 are fixed. The piezoelectric sheet 102 is located on the inner bottom surface of the housing 101. On both sides of the piezoelectric sheet 102, there are I-shaped magnetic cores 103. A coil 104 is connected between the I-shaped magnetic cores 103, and the coil 104 is located above the piezoelectric sheet 102. An energy harvesting PCB 105 is arranged above the I-shaped magnetic cores 103 and the coil 104. A cover plate 106 is arranged on the top of the housing 101.

[0042] The usage method of the device of this application is as follows:

[0043] S1. Adjust the number of layers and turns of the coil 104 on the I-shaped magnetic core 103 according to the on-site magnetic field intensity.

[0044] S2. Connect the output terminals 107 of the piezoelectric sheet 102 and the coil 104 to the energy harvesting PCB 105 through soldering and wires, and connect the output of the energy harvesting PCB 105 to the output connector 112.

[0045] S3. Relatively fix the I-shaped magnetic core 103 and the housing 101 through the magnetic core fixing screw holes 109 on the housing 101.

[0046] S4. Fix the housing 101 in an alternating magnetic field environment through the housing fixing holes 111 on the bottom surface of the housing 101.

[0047] S5. Install the washer 108.

[0048] S6. Fix the cover plate 106 and the housing through the cover plate fixing screw holes 110 on the cover plate 106.

[0049] Embodiment 2

[0050] As Figure 1 As shown in the figure, a three-way alternating magnetic field energy harvesting device based on an alternating magnetic field includes a housing 101. Inside the housing 101, a piezoelectric sheet 102, an I-shaped magnetic core 103, a coil 104 (it is found through simulation that under the same other conditions, the output voltage generated by the coil 104 on the I-shaped magnetic core is the highest), and an energy harvesting PCB 105 are fixed. The piezoelectric sheet 102 is located on the inner bottom surface of the housing 101. On both sides of the piezoelectric sheet 102, there are I-shaped magnetic cores 103. A coil 104 is connected between the I-shaped magnetic cores 103, and the coil 104 is located above the piezoelectric sheet 102. An energy harvesting PCB 105 is arranged above the I-shaped magnetic cores 103 and the coil 104. A cover plate 106 is arranged on the top of the housing 101.

[0051] Two terminals 107 are provided on the piezoelectric sheet 102; six terminals 107 are provided on the energy collection PCB 105, namely two coil 104 input terminals 107, two piezoelectric sheet 102 input terminals 107 and two output terminals 107. The piezoelectric sheet 102, the I-shaped magnetic core 103 and the coil 104 are connected to the energy collection PCB 105 through the terminals 107, and the energy collection PCB 105 outputs energy to the outside through the terminals 107.

[0052] A gasket 108 is provided between the cover 106 and the housing 101 .

[0053] The core material of the I-shaped magnetic core 103 and the coil 104 is 45 steel, and the coil 104 is hand-wound with oxygen-free pure copper enameled wire. The number of layers and turns of the coil 104 can be adjusted according to the actual magnetic field strength at the application site to obtain a suitable voltage output.

[0054] During installation, the lower surface of the I-shaped magnetic core 103 is fitted with the inner bottom surface of the shell 101, and the I-shaped magnetic core 103 is attached to the inner side and inner bottom surface of the shell 101. The piezoelectric piece 102 is attached between the inner sides of the two I-shaped magnetic cores 103 and is located on the inner bottom surface of the shell 101 to prevent the I-shaped magnetic core 103 from rotating during use. At the same time, the left and right sides of the I-shaped magnetic core 103 are fixed to the left and right sides of the shell 101 with the magnetic core fixing screws to ensure the stability of the installation of the I-shaped magnetic core 103.

[0055] The housing 101 and the cover 106 are made of aluminum alloy.

[0056] The left and right sides of the housing 101 are provided with core fixing screw holes 109, and the cover plate 106 is provided with cover plate fixing screw holes 110, both of which are countersunk through holes with a diameter of 3.2. The bottom surface of the housing 101 is provided with housing fixing holes 111, which are through holes with a diameter of 3.2.

[0057] The piezoelectric piece 102 is fixed to the inner bottom surface of the housing 101 by glue, and the I-shaped magnetic core 103 is fixed to the housing 101 by screws through the magnetic core fixing screw holes 109 on both sides of the housing 101.

[0058] An output connector 112 is connected to the cover plate 106 .

[0059] The method of using the device of this application is as follows:

[0060] S1, adjusting the number of layers and turns of the coil 104 on the I-shaped magnetic core 103 according to the on-site magnetic field strength.

[0061] S2, connect the piezoelectric piece 102 and the output terminal 107 of the coil 104 to the energy collection PCB 105 through soldering and wires, and connect the output of the energy collection PCB 105 to the output connector 112.

[0062] S3. Fix the I-shaped magnetic core 103 and the housing 101 relative to each other through the magnetic core fixing screw holes 109 on the housing 101.

[0063] S4. Fix the housing 101 in an alternating magnetic field environment through the housing fixing holes 111 on the bottom surface of the housing 101.

[0064] S5. Install the washer 108.

[0065] S6. Fix the cover plate 106 and the housing through the cover plate fixing screw holes 110 on the cover plate 106.

[0066] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A three-way alternating magnetic field energy harvesting device based on an alternating magnetic field, comprising a housing (101), characterized in that: A piezoelectric sheet (102), an I-shaped magnetic core (103), a coil (104), and an energy harvesting PCB (105) are fixed inside the housing (101). The piezoelectric sheet (102) is located on the inner bottom surface of the housing (101). I-shaped magnetic cores (103) are arranged on both sides of the piezoelectric sheet (102). A coil (104) is connected between the I-shaped magnetic cores (103), and the coil (104) is located above the piezoelectric sheet (102). An energy harvesting PCB (105) is arranged above the I-shaped magnetic cores (103) and the coil (104). A cover plate (106) is arranged on the top of the housing (101).

2. The three-way alternating magnetic field energy harvesting device based on an alternating magnetic field according to claim 1, characterized in that: Two connection terminals (107) are arranged on the piezoelectric sheet (102). There are six connection terminals (107) on the energy harvesting PCB (105), namely two input connection terminals (107) for the coils (104), two input connection terminals (107) for the piezoelectric sheets (102), and two output connection terminals (107). The piezoelectric sheet (102) and the coil (104) are connected to the energy harvesting PCB (105) through the connection terminals (107), and the energy harvesting PCB (105) outputs energy through the connection terminals (107).

3. The three-way alternating magnetic field energy harvesting device based on an alternating magnetic field according to claim 1, characterized in that: A washer (108) is arranged between the cover plate (106) and the housing (101).

4. The three-way alternating magnetic field energy harvesting device based on an alternating magnetic field according to claim 1, characterized in that: The iron core material in the I-shaped magnetic core (103) and the coil (104) is selected as 45 steel, and the coil (104) is wound with oxygen-free pure copper enameled wire.

5. The three-way alternating magnetic field energy harvesting device based on an alternating magnetic field according to claim 1, wherein: The lower surface of the I-shaped magnetic core (103) is attached to the inner bottom surface of the housing (101). The I-shaped magnetic core (103) is attached to the inner side surface and the inner bottom surface of the housing (101). The piezoelectric sheet (102) is attached between the inner sides of the two I-shaped magnetic cores (103) and is located on the inner bottom surface of the housing (101).

6. The three-way alternating magnetic field energy harvesting device based on an alternating magnetic field according to claim 1, characterized in that: The housing (101) and the cover plate (106) are made of aluminum alloy.

7. A three-way alternating magnetic field energy harvesting device based on an alternating magnetic field according to claim 1, characterized in that: Magnetic core fixing screw holes (109) are provided on the left and right side surfaces of the housing (101). Cover plate fixing screw holes (110) are provided on the cover plate (106). Housing fixing holes (111) are provided on the bottom surface of the housing (101).

8. A three-way alternating magnetic field energy harvesting device based on an alternating magnetic field according to claim 1, characterized in that: The piezoelectric sheet (102) is fixed to the inner bottom surface of the housing (101) by glue. The I-shaped magnetic core (103) is relatively fixed to the housing (101) by screws through the magnetic core fixing screw holes (109) on both sides of the housing (101).

9. A three-way alternating magnetic field energy harvesting device based on an alternating magnetic field according to claim 1, characterized in that: An output connector (112) is connected to the cover plate (106).

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