Energy taking device

Abstract

The utility model provides an energy taking device. The energy taking device comprises a metal box body, an insulating box body, a high-voltage capacitor, a low-voltage capacitor, an inductor, a transformer and a voltage stabilizing plate, the metal box body is arranged in the insulating box body; the insulating box body is used for placing at least one of a low-voltage capacitor, an inductor and a transformer; the metal box body is used for placing the voltage stabilizing plate. According to the invention, the working efficiency and safety of the energy taking device can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to energy collection technology, and in particular to a power taking device. BACKGROUND

[0002] The power taking device usually includes high-voltage capacitors, low-voltage capacitors, inductors, transformers and other components. In order to improve the integrity of the power taking device, the low-voltage capacitors, inductors, transformers and other components are installed in the box body, and the box body is usually made of metal. However, the metal box body is prone to discharge phenomenon, thereby affecting the normal operation of the power taking device. CONTENT OF THE UTILITY MODEL

[0003] The embodiment of the present application provides a power taking device, which can improve the working efficiency and safety of the power taking device.

[0004] The technical scheme of the embodiment of the present application is implemented as follows:

[0005] The embodiment of the present application provides a power taking device, which comprises:

[0006] A metal box body, an insulating box body, high-voltage capacitors, low-voltage capacitors, inductors, transformers and a voltage stabilizing plate; the metal box body is arranged inside the insulating box body; the insulating box body is used for placing at least one of the low-voltage capacitors, the inductors and the transformers; and the metal box body is used for placing the voltage stabilizing plate.

[0007] In the above-mentioned power taking device, further comprising:

[0008] A metal plug-in assembly, which is fixedly connected with the metal box body, and a notch structure is arranged on a first side wall of the insulating box body; the metal plug-in assembly is used for plugging the metal box body at the notch structure.

[0009] In the above-mentioned power taking device, further comprising:

[0010] The insulating box body comprises a first opening structure, and the metal box body comprises a second opening structure; the first opening structure and the second opening structure are directed to the same direction.

[0011] In the above-mentioned power taking device, further comprising:

[0012] A first surface of the voltage stabilizing plate is provided with a plurality of diodes, and a second surface of the voltage stabilizing plate is provided with a plurality of metal contacts; the first surface of the voltage stabilizing plate is attached to a first inner side surface of the metal box body, and the second surface of the voltage stabilizing plate is directed to a second inner side surface of the metal box body, and the distance between the second surface of the voltage stabilizing plate and the second inner side surface of the metal box body is greater than 0.

[0013] In the above-mentioned power taking device, further comprising:

[0014] The bottom surface of the insulating box body is provided with a mounting assembly for mounting the insulating box body in a power-off protection device; the metal box body is inclined towards the first inner side surface due to the mounting assembly when the insulating box body is laid flat.

[0015] In the above energy taking device, further comprising:

[0016] The mounting assembly is arranged on one side close to the first side wall.

[0017] In the above energy taking device, further comprising:

[0018] At least one hole structure is arranged on the bottom surface of the insulating box body, and the hole structure is used for movably penetrating a wire.

[0019] In the above energy taking device, further comprising:

[0020] A baffle is arranged in the insulating box body, the baffle is fixedly connected to the bottom surface of the insulating box body; the inductor is arranged between the metal box body and the baffle, and the baffle is used for fixing the inductor.

[0021] In the above energy taking device, further comprising:

[0022] A pressure-sensitive resistor is connected in parallel with the low-voltage capacitor, and the pressure-sensitive resistor is used for overvoltage protection of the energy taking device.

[0023] In the above energy taking device, further comprising:

[0024] The insulating box body is filled with a first insulating material; the metal box body is filled with a second insulating material, and the second insulating material has heat conductivity.

[0025] The embodiment of the present application has the following beneficial effects:

[0026] The embodiment of the present application provides an energy taking device. First, the output voltage of the transformer is controlled by the voltage stabilizing plate, and the stability of the energy taking device is improved. Second, the metal box body and the insulating box body are arranged in the energy taking device. Since the voltage stabilizing plate is the most heat-emitting component, the voltage stabilizing plate is placed in the metal box body to improve heat dissipation, which helps to keep the energy taking device within a normal temperature range, thereby improving the operation efficiency and performance of the energy taking device. At least one of the low-voltage capacitor, the inductor and the transformer is placed in the insulating box body, which can achieve insulation effect and avoid discharge phenomenon, thereby improving the safety of the energy taking device. Therefore, the energy taking device provided by the embodiment of the present application can improve the stability of the energy taking device, and at the same time, the insulation and heat dissipation performance are considered, thereby improving the working efficiency and safety of the energy taking device. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1A is a structural schematic diagram of a power taking device provided by an embodiment of the present application;

[0028] Figure 1B is another structural schematic diagram of a power taking device provided by an embodiment of the present application;

[0029] Figure 2 is a circuit diagram of a power taking device provided by an embodiment of the present application;

[0030] Figure 3 is a structural schematic diagram of a box body provided by an embodiment of the present application;

[0031] Figure 4A is a structural schematic diagram of a first surface of a voltage stabilizing plate provided by an embodiment of the present application;

[0032] Figure 4B is a structural schematic diagram of a second surface of a voltage stabilizing plate provided by an embodiment of the present application;

[0033] Figure 5 is a structural schematic diagram of a mounting structure of a mounting assembly provided by an embodiment of the present application

[0034] Figure 6 is a schematic diagram of a box body provided by an embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be described in further detail below with reference to the drawings, and the described embodiments should not be regarded as limiting the present application, and all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0036] In the following description, “some embodiments” are described, which describe a subset of all possible embodiments, but it can be understood that “some embodiments” can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0037] Unless otherwise defined, all technical and scientific terms used in the embodiments of the present application have the same meanings as commonly understood by those skilled in the art. The terms used in the embodiments of the present application are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0038] Before the embodiments of the present application are described in further detail, the terms and phrases involved in the embodiments of the present application are explained, and the terms and phrases involved in the embodiments of the present application are applicable to the following explanations.

[0039] 1) Power harvesting device: a device that can collect energy from the environment and convert it into electrical energy that can be used by electronic devices. It is commonly used in power distribution network equipment (such as a secondary deep fusion pole-mounted circuit breaker), wireless sensor networks, remote monitoring systems, Internet of Things devices, etc., especially in places where it is difficult to replace batteries or inconvenient to maintain power supplies. The core function is to achieve autonomous energy acquisition, reducing or eliminating dependence on external power sources.

[0040] 2) Low-voltage capacitor: usually refers to power capacitors with a voltage rating in the range of 400V-6kV, which can provide capacitive reactive power to compensate for the reactive power caused by inductive loads (such as motors, transformers, etc.), thereby improving the power factor of the system and reducing the transmission of invalid power. The low-voltage capacitor and the high-voltage capacitor in this application are two relative concepts, specifically, the power harvesting device in this application at least includes a first capacitor and a second capacitor, wherein the first capacitor is connected to the high-voltage end and carries a relatively high voltage, and the second capacitor carries a relatively low voltage. For ease of explanation, the first capacitor is referred to as a high-voltage capacitor, and the second capacitor is referred to as a low-voltage capacitor.

[0041] 3) Inductor: a basic electronic component that uses electromagnetic induction principles to store energy and filter signals. It is usually composed of a wire coil, sometimes wrapped around a core or magnetic core to enhance its electromagnetic properties.

[0042] 4) Transformer: a stationary power device that works according to the principle of electromagnetic induction, its main function is to change the voltage level of alternating current, which can raise the voltage (step-up transformer) or lower the voltage (step-down transformer) to meet different power needs.

[0043] 5) Regulator board: a device that mainly maintains the stability of the output voltage to ensure that electronic devices can reliably work within a certain voltage range and are not affected by input voltage fluctuations or load changes.

[0044] 6) Capacitor voltage transformer (Capacitor Voltage Transformer, CVT): an instrument transformer used to measure high-voltage AC systems, which uses capacitive voltage division to reduce high voltage for measurement and control.

[0045] The power taking device based on the principle of capacitor voltage transformer (CVT) usually includes high-voltage capacitors, low-voltage capacitors, inductors, transformers and other components. In the related art, in order to improve the integrity of the power taking device, the low-voltage capacitors, inductors, transformers and other components are installed in the box body, and the box body is usually a metal box body to improve the heat dissipation performance. However, the metal box body is prone to discharge, and if the metal box body is replaced with an insulating box body, the insulating box body is difficult to meet the heat dissipation effect. Therefore, the box body of the power taking device in the related art is difficult to simultaneously consider insulation and heat dissipation performance.

[0046] The embodiment of the present application provides a power taking device which can improve the stability of the power taking device, and simultaneously consider insulation and heat dissipation performance, and improve the working efficiency and safety of the power taking device.

[0047] The exemplary application and implementation of the power taking device provided by the embodiment of the present application will be described below in combination with Figures 1A to 6 .

[0048] Referring to Figure 1A , Figure 1A is a structural schematic diagram of the power taking device provided by the embodiment of the present application. The power taking device provided by the embodiment of the present application includes a metal box body 101, an insulating box body 102, a high-voltage capacitor 103, a low-voltage capacitor 104, an inductor 105, a transformer 106 and a voltage stabilizing plate 107. The metal box body 101 is arranged inside the insulating box body 102, the high-voltage capacitor 103, the low-voltage capacitor 104, the inductor 105 and the transformer 106 are placed in the insulating box body 102, and the voltage stabilizing plate 107 is placed in the metal box body 101.

[0049] In some embodiments, referring to Figure 1B , the power taking device not only includes the metal box body 101, the insulating box body 102, the high-voltage capacitor 103, the low-voltage capacitor 104, the inductor 105, the transformer 106 and the voltage stabilizing plate 107, but also includes a pressure sensitive resistor 108. The pressure sensitive resistor 108 is connected in parallel with the low-voltage capacitor 104, and is used for overvoltage protection of the power taking device.

[0050] Here, the multiple components of the power taking device are connected through wires, and the power taking device can effectively obtain energy from the environment and convert the energy into a form available to electronic devices. The metal box body can be a metal material such as iron, copper, aluminum, etc., which has good heat dissipation performance. The insulating box body is an electrically insulating material that can prevent current from passing through, such as wood, rubber or plastic, etc. The embodiment of the present application takes the insulating box body as an example of being made of plastic.

[0051] In some embodiments, the power taking device further includes a high-voltage capacitor arranged outside the metal box body and the insulating box body, and connected in series with the low-voltage capacitor.

[0052] Referring to Figure 2 , Figure 2 is a circuit diagram of the energy taking device provided by the embodiments of the present application. Among them, the high-voltage capacitor 201 is connected in series with the low-voltage capacitor 202. The voltage-dependent resistor 203 is connected in parallel with the low-voltage capacitor 202, which is used for overvoltage protection, electromagnetic interference suppression, and voltage filtering and smoothing processing of the energy taking device. The transformer 205 includes two pins of the primary winding (corresponding to "P1" and "P2" in Figure 2 ) and two pins of the secondary winding (corresponding to "S1" and "S2" in Figure 2 ), the two pins of the primary winding are the input side of the transformer 204, and the two pins of the primary winding are the output side of the transformer 204. The inductor 204 is connected in series with the input side (input end) of the transformer 205, and is connected in parallel with the low-voltage capacitor 202. The voltage stabilizing plate 206 is connected with the two pins of the output end (output end) of the transformer, which is used for controlling the voltage of the output end. One end of the high-voltage capacitor is used as the input end of the energy taking device, and is connected with the energy source (5774V voltage in Figure 2 ). The first end of the low-voltage capacitor is used as the output end of the energy taking device, and is grounded.

[0053] In some embodiments, the metal box body is provided with a metal plug-in assembly, and the first side wall of the insulating box body is provided with a notch structure, and the metal box body is plugged into the notch structure of the insulating box body through the metal plug-in assembly.

[0054] In some embodiments, the insulating box body is a cube or a cuboid, and the first side wall of the insulating box body can be any one side of the cube or the cuboid; the metal box body is a flat cuboid with a volume smaller than the insulating box body, and the metal plug-in assembly is arranged on one of the larger sides of the flat cuboid. The metal plug-in assembly is obtained by shape design on two sides of the cuboid, wherein the length of the cuboid is the same as the length of the metal box body, and the shape of the side of the metal plug-in assembly is consistent with the notch structure of the insulating box body.

[0055] Referring to Figure 3 , Figure 3 is a schematic diagram of the box body structure provided by the embodiments of the present application, which comprises a metal box body 301, a metal plug-in assembly 302 arranged on the metal box body 301, an insulating box body 303, and a notch structure arranged at the position of the metal plug-in assembly 302. Among them, the two sides of the metal plug-in assembly 302 are provided with grooves, and the two sides of the notch structure are provided with protrusions. When the metal plug-in assembly 302 is plugged into the notch structure, the grooves on the side of the metal plug-in assembly 302 completely fit the protrusions on the side of the notch structure, so as to fix the metal box body at the position of the notch structure.

[0056] In some embodiments, at least one hole structure is provided on the bottom surface of the insulating box body, and the hole structure is used for movably passing the wire. Here, movably passing means that the wire passes through the hole structure, but is not fixed in the hole structure, and the wire can slide freely in the hole structure for adjustment. Figure 3 The bottom surface of the insulating box is provided with three circular holes 304, which are convenient for passing wires. The wires are used to connect the circuit in the energy harvesting device to an external power source, providing energy for the energy harvesting device to operate normally.

[0057] In some embodiments, because the inductor is typically heavy, it may shift within the insulating box as the energy harvesting device moves, potentially damaging the components or disrupting the electrical connections between them. Therefore, a baffle is provided within the insulating box, fixedly connected to the bottom surface of the insulating box; the inductor is disposed between the metal box and the baffle, and the baffle is used to secure the inductor. The baffle can be integrally formed with the insulating box during manufacture. Alternatively, after the insulating box and baffle are separately manufactured, the baffle is attached to the bottom of the insulating box by welding, adhesive bonding, or screws.

[0058] See also Figure 3 A baffle 305 is provided on the bottom surface of the insulating box body, and the baffle 305 is parallel to the metal box body 301. In this way, by providing a baffle on the bottom surface of the insulating box body to fix the inductor, the inductor is prevented from displacement, thereby improving the safety of the energy harvesting device.

[0059] In some embodiments, the insulating box body includes a first opening structure, and the metal box body includes a second opening structure; the first opening structure and the second opening structure face the same direction. For example, the insulating box body and the metal box body are two uncapped rectangular parallelepipeds, and the uncapped sides of the two rectangular parallelepipeds are both horizontally facing upward.

[0060] In some embodiments, the voltage stabilizing board includes two sides, a front side and a back side. The first side of the voltage stabilizing board is provided with multiple diodes, and the second side of the voltage stabilizing board is provided with multiple metal contacts. The first side of the voltage stabilizing board is in contact with the first inner side of the metal box body, and the second side of the voltage stabilizing board faces the second inner side of the metal box body, and the distance between the first inner side of the voltage stabilizing board and the second inner side of the metal box body is greater than 0. The first inner side of the metal box body faces away from the notch structure of the insulating box body, that is, away from the notch structure of the insulating box body; the second inner side of the metal box body faces the notch structure of the insulating box body, that is, close to the notch structure of the insulating box body. Figure 3 , where surface A is the first inner side surface of the metal box body, and surface B is the second inner side surface of the metal box body.

[0061] Here, the metal contacts on the voltage stabilizing board are used to connect the diode to the circuit, ensuring that the diode is powered and emits light. Since the diode generates a large amount of heat when emitting light, bonding the diode to the first inner side surface of the metal housing allows for the metal's excellent thermal conductivity to be utilized to conduct and dissipate the heat. The metal contacts of the voltage stabilizing board do not contact the first inner side surface of the metal housing, preventing any short circuit between the metal contacts.

[0062] See also Figure 4A , Figure 4A Schematic diagram of the structure of the first side of the voltage stabilizing board provided in the embodiment of the present application. There are 32 diodes 502 on the first side of the voltage stabilizing board 401, which are divided into 4 groups ( Figure 4A The dotted box in the middle is a group), each group has 8 diodes, the groups are connected in parallel, and the 8 diodes in each group are connected in series.

[0063] See also Figure 4B , Figure 4B Schematic diagram of the structure of the second side of the voltage stabilizing plate provided in the embodiment of the present application. There are 64 metal contacts 403 on the second side of the voltage stabilizing plate 401, which are divided into 32 groups ( Figure 4B The dotted box in the middle is a group), and the two metal contacts in each group are respectively connected to the positive and negative electrodes of the diode on the first surface of the voltage stabilizing board 401.

[0064] In some embodiments, the metal box includes two voltage stabilizing boards, which are stacked together, with diodes of the two voltage stabilizing boards on the same plane, metal contacts on the same plane, and the two voltage stabilizing boards connected in series.

[0065] In some embodiments, a first insulating material is cast in the insulating box body; a second insulating material is cast in the metal box body, and the second insulating material has thermal conductivity.

[0066] The first and second insulating materials can be the same or different, and the second insulating material needs to have good thermal conductivity to help quickly dissipate heat from the voltage stabilizing plate. The first insulating material can be epoxy, polyurethane, silicone rubber, etc. The second insulating material can be polyimide, thermally conductive epoxy, thermally conductive silicone rubber, etc. When pouring the insulating box, at least one of the low-voltage capacitor, inductor, and transformer is placed inside the insulating box, and the components are electrically connected by wires, and then the insulating box is poured with the first insulating material. When pouring the metal box, the position of the voltage stabilizing plate in the metal box is adjusted so that the first surface of the voltage stabilizing plate is attached to the first inner side surface of the metal box, the second surface of the voltage stabilizing plate faces the second inner side surface of the metal box, and the distance between the second surface of the voltage stabilizing plate and the second inner side surface of the metal box is greater than 0, and then the metal box is poured with the second insulating material. In this way, by pouring the insulating material in the insulating box and the metal box, not only can different electronic components be effectively isolated to prevent damage to electronic components due to electrical faults such as short circuits, but also the power supply device can be improved to make the power supply device more robust and durable.

[0067] In some embodiments, the position of the voltage stabilizing plate in the metal box can be manually adjusted. Alternatively, the insulating box is tilted so that the side of the metal box in the insulating box is raised, and then the second surface of the voltage stabilizing plate is placed in the metal box facing the second inner side surface of the metal box. In this way, the first surface of the voltage stabilizing plate will be attached to the first inner side surface of the metal box due to its own weight, thereby conducting and dissipating heat through the metal box, while the second surface of the voltage stabilizing plate will not be in contact with the second inner side surface of the metal box, thereby avoiding short circuits between the metal contacts. Then, the second insulating material is poured into the metal box in this state to fix the position of the voltage stabilizing plate in the metal box.

[0068] In some embodiments, referring to Figure 5 , the power supply device further comprises a mounting assembly 501 disposed at the bottom of one side of the first side wall 503 of the insulating box 502 for mounting the power supply device in the power-off protection device. The bottom of one side of the first side wall is any position on the bottom of the insulating box at one end of the first side wall, and the mounting assembly is parallel to the first side wall.

[0069] In some embodiments, when the insulating box is placed flat, the mounting assembly will cause the metal box to tilt towards the first inner side surface. Referring to Figure 6When the metal box 601 is poured, the insulating box 604 is only needed to be placed on a horizontal surface, and the insulating box 604 is automatically inclined due to the support of the mounting assembly 603, so that the side of the insulating box 604 where the metal box 601 is located is lifted, and the metal box 601 is inclined. Then the second surface of the voltage stabilizing plate 602 is placed in the metal box 601 and faces the second inner side surface of the metal box 601. In this way, the first surface of the voltage stabilizing plate 602 is just attached to the first inner side surface of the metal box 601 due to the weight, and the second surface of the voltage stabilizing plate 602 is just not in contact with the second inner side surface of the metal box 601, so that the position of the voltage stabilizing plate in the metal box is ingeniously adjusted, and the manufacturing process of the power taking device is simplified.

[0070] In summary, the power taking device provided by the embodiments of the present application comprises a metal box, an insulating box, a high-voltage capacitor, a low-voltage capacitor, an inductor, a transformer and a voltage stabilizing plate. The metal box is arranged inside the insulating box. The insulating box is used to place at least one of the low-voltage capacitor, the inductor and the transformer. The metal box is used to place the voltage stabilizing plate. In the embodiments of the present application, the output voltage of the transformer is controlled by using the voltage stabilizing plate, so that the stability of the power taking device is improved. Moreover, the voltage stabilizing plate is placed in the metal box to improve heat dissipation, and at least one of the low-voltage capacitor, the inductor and the transformer is placed in the insulating box to achieve insulation effect, so that the insulation and heat dissipation performance are considered, and the working efficiency and safety of the power taking device are improved.

[0071] The above is only an embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement and improvement within the spirit and scope of the present application are included in the protection scope of the present application.

Claims

1. A power pickup device, characterized by comprising: The power taking device comprises a metal box body, an insulating box body, a high-voltage capacitor, a low-voltage capacitor, an inductor, a transformer and a voltage stabilizing plate. The metal box body is arranged inside the insulating box body. The insulating box body is used for placing at least one of the low-voltage capacitor, the inductor and the transformer. The metal box body is used for placing the voltage stabilizing plate.

2. The power harvesting device of claim 1, wherein, The power taking device further comprises a metal plug-in assembly, The metal plug-in assembly is fixedly connected with the metal box body. A notch structure is arranged on a first side wall of the insulating box body, and the plug-in assembly is used for plugging in the metal box body at the notch structure.

3. The power taking device according to claim 1, wherein The insulating box body comprises a first opening structure, and the metal box body comprises a second opening structure. The first opening structure and the second opening structure are oriented in the same direction.

4. The power taking device according to claim 1, wherein A first surface of the voltage stabilizing plate is provided with a plurality of diodes, and a second surface of the voltage stabilizing plate is provided with a plurality of metal contacts. The first surface of the voltage stabilizing plate is attached to a first inner side surface of the metal box body, and the second surface of the voltage stabilizing plate faces a second inner side surface of the metal box body, and the distance between the second surface of the voltage stabilizing plate and the second inner side surface of the metal box body is greater than 0.

5. The power harvesting device of claim 4, wherein, A bottom surface of the insulating box body is provided with a mounting assembly, the mounting assembly is used for mounting the insulating box body in a power-off protection device, and the metal box body is inclined toward the first inner side surface due to the mounting assembly when the insulating box body is laid flat.

6. The power harvesting device of claim 5, wherein, The mounting assembly is arranged close to one side of the first side wall of the insulating box body.

7. The power taking device according to any one of claims 1 to 6, wherein At least one hole structure is arranged on a bottom surface of the insulating box body, and the hole structure is used for movably penetrating a wire.

8. The power taking device according to any one of claims 1 to 6, wherein A baffle is arranged in the insulating box body, and the baffle is fixedly connected with a bottom surface of the insulating box body. The inductor is arranged between the metal box body and the baffle, and the baffle is used for fixing the inductor.

9. The power extraction device according to any one of claims 1 to 6, characterized in that, The power taking device further comprises a piezoresistor, The piezoresistor is connected in parallel with the low-voltage capacitor, and is used for overvoltage protection of the power taking device.

10. The power taking device according to any one of claims 1 to 6, wherein A first insulating material is cast in the insulating box body. A second insulating material is cast in the metal box body, and the second insulating material has heat conductivity.

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