A high voltage DC-DC planar transformer

Abstract

The utility model relates to the technical field of electrical equipment, and specifically relates to a high -voltage DC -DC panel transformer, and the transformer includes two groups of symmetrically arranged magnetic core positioning blocks, and the opposite sides of the two groups of magnetic core positioning blocks are equipped with fixed slots, the middle part of the fixed slot is equipped with a magnetic core column, the fixed slot is equipped with the winding coil and the annular sheet that are alternately stacked, the magnetic core column passes out the annular sheet bending center and winding coil spin center, and the two groups of winding coils are equipped with the isolation ring, have good practicality and economy, and is beneficial to the promotion and use of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of electrical equipment, and specifically to a high-voltage DC-DC flat plate transformer. Background Technology

[0002] The biggest difference between a planar transformer and a traditional transformer lies in the core and coil windings. Planar transformers are typically made of high-frequency power ferrite materials, exhibiting low core losses at high frequencies. They also feature low DC resistance, low leakage inductance, and can be made very flat, making them ideal for low-voltage, high-current switching power supplies.

[0003] However, many DC-DC transformers on the market currently have input voltages above DC 800V. Traditional flat inductors have insufficient voltage bearing capacity, and the excessively enclosed contact surface results in insufficient heat dissipation. High voltage can easily break down the insulation layer, making them unable to meet the ever-increasing voltage requirements. Utility Model Content

[0004] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a high-voltage DC-DC flat plate transformer that can be used with higher operating voltages and effectively solves the heat dissipation problem of the overly enclosed contact surface.

[0005] The technical solution adopted in this utility model is: a high-voltage DC-DC flat-plate transformer, comprising...

[0006] Two sets of symmetrically arranged magnetic core positioning blocks are provided. The opposite sides of the two sets of magnetic core positioning blocks are provided with fixing grooves. A magnetic core column is provided in the middle of the fixing groove. Alternating stacked winding coils and circular ring plates are provided in the fixing groove. The magnetic core column passes through the bending center of the circular ring plate and the winding center of the winding coil. An isolation ring is provided between the two sets of winding coils.

[0007] In one embodiment, the annular plate includes several copper strips, which are stacked vertically and bent into a protruding annular structure. The copper strips have through grooves at both ends, and an isolation ring is provided between the annular plate and the winding coil.

[0008] In one embodiment, the winding coil includes copper stranded wire wound into a ring and several layers of insulation. The copper stranded wire is wound into a ring several times, and the insulation is polyethylene; or polyvinyl fluoride; or polytetrafluoroethylene.

[0009] In one embodiment, the winding coil is opposite to the winding coil lead-out end.

[0010] In one embodiment, a bearing plate is provided on one side of the magnetic core positioning block. The bearing plate is provided with two sets of fixing slots and two sets of through slots. A connecting post is provided in the fixing slot. The connecting post passes through the through slots of two adjacent sets of annular plates. The ends of the two sets of winding coils pass into the adjacent through slots and are connected.

[0011] In one embodiment, the bearing plate has a positioning groove in the middle, and the adjacent magnetic core positioning block passes through and is glued to the positioning groove.

[0012] In one embodiment, the support plate is made of insulating material and has several fixing holes for auxiliary fixing.

[0013] In one embodiment, the insulating ring is made of a thermally conductive ceramic material.

[0014] The beneficial effects of this utility model are as follows: This utility model is a high-voltage DC-DC flat plate transformer that can be used with higher working voltages and effectively solves the heat dissipation problem of the overly enclosed contact surface. The specific beneficial effects are as follows.

[0015] 1. The use of flat circular plates in combination with stacked wire cores in the winding coil reduces the volume while increasing the pressure-bearing capacity and heat dissipation gap, thus preventing excessive voltage from breaking down the insulation layer.

[0016] 2. By using a sandwich combination method, the circular ring plates and winding coils are placed alternately, which increases the coupling between the primary and secondary windings to reduce leakage inductance, and at the same time makes the current evenly distributed, reducing transformer losses.

[0017] 3. The transformer has a compact overall structure and a wide range of applications. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0019] Fig. 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Fig. 2 This is an exploded three-dimensional structural diagram of the present invention.

[0021] Figure descriptions: 1. Magnetic core positioning block; 11. Fixing groove; 12. Magnetic core column; 2. Bearing plate; 21. Fixing bayonet; 22. Positioning groove; 3. Isolation ring; 4. Circular ring plate; 41. Connecting column; 42. Through groove; 5. Winding coil; 23. Through wire groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] The following is combined Figs. 1-2 This invention describes a specific embodiment of a high-voltage DC-DC flat-plate transformer, comprising:

[0025] Two sets of symmetrically arranged magnetic core positioning blocks 1 are provided. The opposite sides of the two sets of magnetic core positioning blocks 1 are provided with fixing grooves 11. A magnetic core column 12 is provided in the middle of the fixing groove 11. Alternating stacked winding coils 5 and circular ring plates 4 are provided in the fixing groove 11. The magnetic core column 12 passes through the bending center of the circular ring plate 4 and the winding center of the winding coil 5. An isolation ring 3 is provided between the two sets of winding coils 5. It is beneficial that the isolation ring 3 is made of thermally conductive ceramic material to enhance heat dissipation.

[0026] Beneficially, the annular plate 4 includes several copper strips, which are stacked vertically and bent into a protruding annular structure. Multiple stackings can increase the heat dissipation gap and avoid overheating. The copper strips are provided with through grooves 42 at both ends. An isolation ring 3 is provided between the annular plate 4 and the winding coil 5 to facilitate isolation and heat dissipation and reduce losses.

[0027] Beneficially, the winding coil 5 includes copper stranded wire wound into a ring and several layers of insulation wrapping, here the number of wrapping layers is three, the copper stranded wire is wound into a ring and stacked in several layers, here the number of stacking layers is two, the insulation wrapping is polyethylene; or polyvinyl fluoride; or polytetrafluoroethylene. Multiple layers of wrapping can facilitate the increase of heat dissipation gaps between wires and between adjacent mating surfaces to adapt to high voltage.

[0028] Beneficially, the opposite ends of the winding coil 5 and the output ends of the winding coil 5 increase the coupling between the annular plate 4 and the winding coil 5 to reduce leakage inductance, while also making the current more evenly distributed and reducing transformer losses.

[0029] Beneficially, one side of the magnetic core positioning block 1 is provided with a bearing plate 2. The bearing plate 2 is provided with two sets of fixing slots 21 and two sets of wire passage grooves 23. The fixing slots 21 are provided with connecting posts 41. The connecting posts 41 pass through the through slots 42 of two adjacent ring plates 4. The ends of the two sets of winding coils 5 pass into the adjacent wire passage grooves 23 and are connected, which facilitates the connection of the output wires. At the same time, the bearing plate 2 is provided with a positioning groove 22 in the middle. The adjacent magnetic core positioning blocks 1 pass into and are glued to the positioning groove 22, which facilitates the connection of the input wires.

[0030] Beneficially, the bearing plate 2 is made of insulating material and has several fixing holes for auxiliary fixing.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A high voltage DC-DC planar transformer, characterized by: include Two sets of symmetrically arranged magnetic core positioning blocks (1) are provided. The opposite sides of the two sets of magnetic core positioning blocks (1) are provided with fixing grooves (11). A magnetic core column (12) is provided in the middle of the fixing groove (11). Alternating stacked winding coils (5) and circular rings (4) are provided in the fixing groove (11). The magnetic core column (12) passes through the bending center of the circular ring (4) and the winding center of the winding coil (5). An isolation ring (3) is provided between the two sets of winding coils (5).

2. The high-voltage DC-DC planar transformer according to claim 1, characterized in that: The annular plate (4) includes several copper strips, which are stacked vertically and bent into a protruding annular structure. The copper strips are provided with through grooves (42) at both ends. An isolation ring (3) is provided between the annular plate (4) and the winding coil (5).

3. The high-voltage DC-DC planar transformer according to claim 2, characterized in that: The winding coil (5) includes a copper stranded wire wound into a ring and several layers of insulation. The copper stranded wire is wound into a ring several times, and the insulation is polyethylene; or polyvinyl fluoride; or polytetrafluoroethylene.

4. The high-voltage DC-DC planar transformer of claim 1, wherein: The winding coil (5) is opposite to the output end of the winding coil (5).

5. The high-voltage DC-DC tablet transformer of claim 2, wherein: One of the magnetic core positioning blocks (1) has a bearing plate (2) on one side. The bearing plate (2) has two sets of fixing slots (21) and two sets of through slots (23). The fixing slots (21) have connecting posts (41). The connecting posts (41) pass through the through slots (42) of two adjacent annular plates (4). The ends of the two sets of winding coils (5) pass into the adjacent through slots (23) and are connected.

6. The high-voltage DC-DC tablet transformer of claim 5, wherein: The bearing plate (2) has a positioning groove (22) in the middle, and the adjacent magnetic core positioning block (1) is inserted into and glued to the positioning groove (22).

7. The high-voltage DC-DC planar transformer according to claim 6, characterized in that: The bearing plate (2) is made of insulating material and has several fixing holes for auxiliary fixing.

8. The high-voltage DC-DC tablet transformer of claim 1, wherein: The insulating ring (3) is made of thermally conductive ceramic material.

Images