Novel photovoltaic inversion inductance module

Abstract

The utility model discloses a novel photovoltaic inversion inductance module which comprises magnetic cores and coils and is characterized in that the novel photovoltaic inversion inductance module further comprises a locking ring, the magnetic cores are made of iron-based amorphous metal materials, the number of the magnetic cores is two, the magnetic cores are spliced in a C-shaped opening structure, an air gap is arranged at the splicing end of the two magnetic cores, and the locking ring is connected with the locking ring. Positioning rings used for positioning the two magnetic cores are symmetrically and fixedly arranged on the two magnetic cores respectively, the coil is a flat enameled wire wound on the outer sides of the positioning rings, the locking ring is arranged on the outer sides of the two magnetic cores in a surrounding mode and used for fastening the two magnetic cores, and a fixing ring is fixedly arranged at one end of the locking ring. The magnetic cores are made of iron-based amorphous metal materials, magnetic loss is reduced, the magnetic cores are formed by splicing the two magnetic cores with the C-shaped openings, the magnetic cores are wound by the flat enameled wires, coil assembly is facilitated, the magnetic cores are not prone to falling off, the magnetic cores are not prone to falling off, the magnetic cores are not prone to falling off, and the magnetic cores are not prone to falling off. The size is small, and the direct current bias saturation resistance of the inductor is improved by arranging the air gap.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, in particular to a novel photovoltaic inverter inductor module. Background Art

[0002] A photovoltaic inverter is a power regulation device composed of semiconductor devices, which is mainly used to convert DC power into AC power. It is generally composed of a boost circuit and an inverter bridge circuit. The boost circuit boosts the DC voltage of the solar cell to the DC voltage required for the inverter output control; the inverter bridge circuit converts the boosted DC voltage into an AC voltage of a commonly used frequency.

[0003] The inverter inductor is an important component of the inverter. Most of the existing inverter inductors are made of silicon steel, which is large in size, heavy, has high core loss, and low resistance to DC bias saturation. Utility Model Content

[0004] The purpose of the utility model is to provide a novel photovoltaic inverter inductor module to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel photovoltaic inverter inductor module, comprising a magnetic core and a coil, and also comprising a locking ring, the magnetic core is made of iron-based amorphous metal material, the magnetic core is provided with two and is spliced ​​in a C-shaped opening structure, the spliced ​​ends of the two magnetic cores are padded with an air gap, the two magnetic cores are symmetrically fixed with positioning rings for positioning the two magnetic cores, the coil is a flat enameled wire wound on the outside of the positioning ring, the locking ring is arranged around the outside of the two magnetic cores for fastening the two magnetic cores, a fixing ring is fixedly provided at one end of the locking ring, the side of the locking ring away from the fixing ring is slidably connected to the gap formed between the fixing ring and the locking ring, and the fixing ring is provided with a locking mechanism for locking the locking ring.

[0006] Preferably, the locking ring is made of soft metal, an outer wall of the locking ring is provided with an insulating layer, and the air gap is made of an epoxy plate.

[0007] Preferably, the locking mechanism includes a rotating shaft, a knob and a screw, the fixing ring is provided with a rotating groove for the rotating shaft to pass through and rotatably connected to the rotating shaft, one end of the rotating shaft located outside the rotating groove is fixedly connected to the knob shaft, the end face of the knob is provided with a cross groove, and the other end is fixedly connected to the screw shaft, and one end of the locking ring away from the fixing ring is provided with a plurality of slots for threaded engagement of the screw, and the spacing between each of the slots is smaller than the pitch of the screw.

[0008] Preferably, a limiting rotating groove is provided on the inner wall ring of the rotating groove, and a limiting ring fixedly sleeved on the outside of the rotating shaft is rotatably arranged in the limiting rotating groove.

[0009] Preferably, the outer wall of the positioning ring is provided with a positioning groove for the locking ring to pass through.

[0010] Preferably, an embedding block and an embedding groove are fixedly provided at one end of the two positioning rings close to each other and at one side away from the positioning groove, and the embedding block is tightly engaged with the embedding groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the magnetic core is made of iron-based amorphous metal material and is composed of two C-shaped open magnetic cores. It is wound by flat enameled wire, which can reduce magnetic loss, reduce eddy current loss, facilitate coil assembly, and has a small size and is easy to use; the two magnetic cores are fitted and tightened by the setting of an air gap, a locking ring, a fixing ring, a rotating groove, a rotating shaft, a knob, a cross groove, a screw and a card slot, and the air gap is set to improve the inductance's ability to resist DC bias saturation, and the air gap is adjustable; the positioning ring, the embedding groove and the embedding block are set to facilitate the rapid assembly of the two magnetic cores. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 Schematic diagram of the appearance of this embodiment;

[0014] Figure 2 Schematic diagram of the locking ring structure of this embodiment;

[0015] Figure 3 It is an enlarged view of point A of this embodiment;

[0016] Figure 4 This is a partial cross-sectional view of the locking portion of the locking ring of this embodiment;

[0017] Figure 5 1 is a diagram of the magnetic ring structure of this embodiment;

[0018] Figure 6 2 is a diagram showing the disassembly of the magnetic ring in this embodiment.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Magnetic core; 2. Coil; 3. Locking ring; 4. Fixing ring; 5. Rotating groove; 6. Rotating shaft; 7. Knob; 8. Cross groove; 9. Screw; 10. Slot; 11. Limit rotating groove; 12. Limiting ring; 13. Positioning ring; 14. Embedded groove; 15. Embedded block; 16. Positioning groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-6 The utility model provides a technical solution: a novel photovoltaic inverter inductor module, including a magnetic core 1 and a coil 2, and also including a locking ring 3. The magnetic core 1 is made of iron-based amorphous metal material. The magnetic core 1 is provided with two and is spliced ​​in a C-shaped opening structure. The spliced ​​ends of the two magnetic cores 1 are padded with an air gap. The two magnetic cores 1 are symmetrically fixed with positioning rings 13 for positioning the two magnetic cores 1. The coil 2 is a flat enameled wire wound on the outside of the positioning ring 13. The locking ring 3 is wound on the outside of the two magnetic cores 1 for fastening the two magnetic cores 1. A fixing ring 4 is fixedly provided at one end of the locking ring 3. The side of the locking ring 3 away from the fixing ring 4 is slidably connected to the gap formed between the fixing ring 4 and the locking ring 3. The fixing ring 4 is provided with a locking mechanism for locking the locking ring 3.

[0023] Specifically, the locking ring 3 is made of soft metal to ensure that the fastening ring 3 can fit the surface of the magnetic core 1 so as to have a better locking effect on the magnetic core 1. The outer wall of the locking ring 3 is provided with an insulating layer to avoid affecting the coil. The air gap adopts epoxy board or NOMEX. The air gap can improve the ability to resist DC bias saturation.

[0024] The locking mechanism comprises a rotating shaft 6, a knob 7 and a screw 9. The fixing ring 4 is provided with a rotating groove 5 for the rotating shaft 6 to pass through and is rotatably connected to the rotating shaft 6. One end of the rotating shaft 6 located outside the rotating groove 5 is fixedly connected to the knob 7 axis, and the end face of the knob 7 is provided with a cross groove 8, and the other end is fixedly connected to the screw 9 axis. One end of the locking ring 3 away from the fixing ring 4 is provided with a plurality of clamping grooves 10 for threaded clamping of the screw 9. The spacing between each clamping groove 10 is smaller than the pitch of the screw 9. By rotating the knob 7, the rotating shaft 6 is driven to rotate, and the rotating shaft 6 drives the screw 9 to rotate. Through the clamping connection between the screw 9 and the clamping groove 10, and the spacing between the clamping grooves 10 is smaller than the pitch of the screw 9, when the screw 9 rotates, one end of the locking ring 3 moves in the gap formed between the fixing ring 4 and the locking ring 3 where the fixing ring 4 is located, so that the locking ring 3 contracts and locks the two magnetic cores 1. If the torque of the knob 7 is large and cannot be rotated manually, it can be tightened with a screwdriver through the cross groove 8.

[0025] Specifically, a limiting groove 11 is provided on the inner wall of the rotating groove 5, and a limiting ring 12 fixedly sleeved on the outside of the rotating shaft 6 is rotatably provided in the limiting groove 11. The limiting of the limiting ring groove 11 and the limiting ring 12 can prevent the rotating shaft 6 from axial movement and affect the locking operation of the locking ring 3.

[0026] Specifically, a positioning groove 16 is formed on the outer wall of the positioning ring 13 for the locking ring 3 to pass through. When the locking ring 3 locks the magnetic core 1 through the positioning groove 16, the locking ring 3 can be kept around the middle part of the outer wall of the magnetic core 1 through the positioning groove 16, thereby ensuring the locking effect of the locking ring 3 on the magnetic core 1.

[0027] Specifically, an embedding block 15 and an embedding groove 14 are fixedly provided at one end of the two positioning rings 13 close to each other and at one side away from the positioning groove 16. The embedding block 15 is tightly engaged with the embedding groove 14. When the two magnetic cores 1 are fitted together, the embedding block 15 is aligned with the embedding groove 14 and inserted to quickly align the two magnetic cores 1. The positioning rings 13 are made of insulating material.

[0028] A specific application example of this embodiment is:

[0029] When the device is in use, epoxy plates are placed on the joint ends of the two magnetic cores 1 as an air gap as needed, and the insert block 15 is aligned with the insert groove 14 and inserted, so that the two magnetic cores 1 can be quickly aligned and fitted, and the locking ring 3 is wound around the outer walls of the two magnetic cores 1 and located in the positioning groove 16, and the locking ring 3 is kept around the middle part of the outer wall of the magnetic core 1, so as to ensure the locking effect of the locking ring 3 on the magnetic core 1, and the rotating shaft 6 is driven to rotate by rotating the knob 7, and the rotating shaft 6 drives the screw 9 to rotate, and the screw 9 is engaged with the card slot 10, and the spacing between the card slots 10 is smaller than the pitch of the screw 9. When the screw 9 rotates, one side of the locking ring 3 The end moves in the gap formed between the fixing ring 4 and the locking ring 3 where the fixing ring 4 is located, so that the locking ring 3 contracts and locks the two magnetic cores 1. If the torque of the knob 7 is large and cannot be rotated manually, the two magnetic cores 1 can be connected and fastened by a screwdriver through the cross slot 8, and then the flat enameled wire can be wound on the magnetic core 1 for use. The magnetic core is made of iron-based amorphous metal material, which can reduce magnetic loss and eddy current loss. It is composed of two C-shaped open magnetic cores 1 and is wound with flat enameled wire, which is convenient for coil assembly and has a small size. The air gap is set to improve the inductance's ability to resist DC bias saturation, and the air gap is adjustable.

[0030] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0031] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that modifications may be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel photovoltaic inverter inductor module, comprising a magnetic core (1) and a coil (2), characterized in that: It also includes a locking ring (3), the magnetic core (1) is made of an iron-based amorphous metal material, the magnetic core (1) is provided with two and is spliced ​​in a C-shaped opening structure, the spliced ​​ends of the two magnetic cores (1) are padded with an air gap, and the two magnetic cores (1) are symmetrically provided with a positioning ring (13) for positioning the two magnetic cores (1), the coil (2) is a flat enameled wire wound on the outside of the positioning ring (13), the locking ring (3) is wound on the outside of the two magnetic cores (1) for fastening the two magnetic cores (1), one end of the locking ring (3) is fixedly provided with a fixing ring (4), the side of the locking ring (3) away from the fixing ring (4) is in sliding connection with the gap formed between the fixing ring (4) and the locking ring (3), and the fixing ring (4) is provided with a locking mechanism for locking the locking ring (3).

2. A novel photovoltaic inverter inductor module according to claim 1, characterized in that: The locking ring (3) is made of a soft metal material, an outer wall of the locking ring (3) is provided with an insulating layer, and the air gap is made of an epoxy plate.

3. The novel photovoltaic inverter inductor module according to claim 1 is characterized in that: The locking mechanism comprises a rotating shaft (6), a knob (7) and a screw (9); the fixing ring (4) is provided with a rotating groove (5) through which the rotating shaft (6) passes and which is rotatably connected to the rotating shaft (6); one end of the rotating shaft (6) located outside the rotating groove (5) is fixedly connected to the knob (7) countershaft; the end surface of the knob (7) is provided with a cross groove (8); the other end is fixedly connected to the screw (9) countershaft; and one end of the locking ring (3) away from the fixing ring (4) is provided with a plurality of clamping grooves (10) for threaded clamping of the screw (9); the spacing between the clamping grooves (10) is smaller than the pitch of the screw (9).

4. A novel photovoltaic inverter inductor module according to claim 3, characterized in that: The inner wall ring of the rotation groove (5) is provided with a limit rotation groove (11), and a limit ring (12) which is fixedly sleeved on the outside of the rotation shaft (6) is rotatably arranged in the limit rotation groove (11).

5. The novel photovoltaic inverter inductor module according to claim 1 is characterized in that: The outer wall of the positioning ring (13) is provided with a positioning groove (16) for the locking ring (3) to pass through.

6. A novel photovoltaic inverter inductor module according to claim 5, characterized in that: An embedding block (15) and an embedding groove (14) are respectively fixedly provided at the end close to the two positioning rings (13) and at the side away from the positioning groove (16), and the embedding block (15) is tightly engaged with the embedding groove (14).

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