Transformer capable of improving segmented air gap dislocation
By setting the central column and insulating sheet in the transformer, the problem of segmented air gap misalignment is solved, the fixing and uniform distribution of the magnetic sheet is achieved, the inductance defect rate is reduced, the saturation value and heat dissipation effect of the magnetic core are improved, and the cost is reduced.
Patent Information
- Application Number
- CN202422083245.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-27
AI Technical Summary
Existing transformers lack effective solutions to the problem of segmented air gap misalignment, resulting in high inductance defect rate and increased cost.
By setting a central column between the magnetic cores and installing magnetic sheets and insulating sheets alternately on the central columns, combining the air gap and heat dissipation insulating parts design, the magnetic sheets are fixed and evenly distributed, reducing the probability of dislocation, and improving the saturation value and heat dissipation effect of the magnetic core.
It effectively reduces the inductance caused by misalignment of the magnetic chip, reduces the cost of the transformer, and improves the saturation value and heat dissipation performance of the magnetic core.
Smart Images
Figure CN223078951U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, and more specifically, to a transformer for improving the misalignment of segmented air gaps. Background Art
[0002] At present, new energy electronic transformers are booming. For example, in the application of charging piles, the power is getting larger and larger, and it is necessary to reduce the leakage inductance to reduce the loss. Usually, segmented air gaps are the most direct and effective method. The more the number of opened air gap segments, the better the effect. However, the more the number of air gap segments, the greater the probability of stacking misalignment between each pair of magnetic sheets, and the manufacturing process is relatively complex.
[0003] The conventional method to solve the problem of stacking misalignment between segmented magnetic sheets of a transformer is to reduce the number of segments, and then widen the inductance range, which will inevitably affect the efficiency of the entire power supply. Therefore, most transformer manufacturers can only tolerate a very high defect rate to cooperate with the power supply design, resulting in problems such as a large loss of cost.
[0004] In view of the problems in the related art, no effective solution has been proposed yet. Summary of the Utility Model
[0005] In view of the problems in the related art, the utility model provides a transformer for improving the misalignment of segmented air gaps to overcome the above technical problems existing in the existing related art.
[0006] To this end, the specific technical solution adopted by the utility model is as follows:
[0007] A transformer for improving the misalignment of segmented air gaps includes a first magnetic core and a second magnetic core. A central column is provided between the first magnetic core and the second magnetic core. A plurality of uniformly distributed magnetic sheets are provided on the central column. An insulating sheet I is provided between every two magnetic sheets. An air gap is formed between the first magnetic core and the second magnetic core, and a heat dissipation insulating member is provided in the air gap.
[0008] Preferably, the number of air gaps is two groups, and the heat dissipation insulating member includes an insulating sheet II and a heat dissipation body located on the side surface of the insulating sheet II.
[0009] Preferably, the first magnetic core, the second magnetic core, and the central column are in the shape of a cuboid, a cylinder, a polygonal prism, or an irregular column.
[0010] Preferably, the surfaces of the first magnetic core and the second magnetic core are provided with impregnated paint.
[0011] Preferably, a skeleton sleeving the magnetic sheets and the insulating sheet I is provided inside the first magnetic core and the second magnetic core, and a coil is wound on the skeleton.
[0012] Preferably, adhesives for correspondingly connecting with the first magnetic core and the second magnetic core are provided on the magnetic discs at both ends.
[0013] The beneficial effects of the present utility model are as follows: By tightly fitting multiple magnetic discs and the first insulating sheets alternately into the central column, the magnetic discs are completely fixed on the central column without being displaced left and right, greatly reducing the inductance defects caused by the displacement of the magnetic discs. Also, the working hours of applying glue to each magnetic disc are saved, achieving the effect of reducing the cost of the transformer. The design of the air gap and the heat dissipation insulating member enables the saturation value of the magnetic core to be higher, and the distribution of the magnetic circuit to be more balanced. The heat dissipation body can bond the second insulating sheet to the side wall of the air gap, while reducing the temperature of the magnetic core, facilitating heat dissipation, and further increasing the saturation value. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0015] Figure 1 FIG. 1 is a schematic structural diagram of a transformer for improving the misalignment of segmented air gaps according to an embodiment of the present utility model;
[0016] Figure 2 FIG. 2 is an exploded view of a transformer for improving the misalignment of segmented air gaps according to an embodiment of the present utility model;
[0017] Figure 3 FIG. 3 is an assembly schematic diagram of magnetic discs and the first insulating sheets in a transformer for improving the misalignment of segmented air gaps according to an embodiment of the present utility model;
[0018] Figure 4 FIG. 4 is a schematic structural diagram of a central column with a cuboid structure according to an embodiment of the present utility model.
[0019] In the figure:
[0020] 1. First magnetic core; 2. Second magnetic core; 3. Central column; 4. Magnetic disc; 5. First insulating sheet; 6. Air gap; 7. Heat dissipation insulating member; 8. Impregnating varnish; 9. Skeleton; 10. Coil; 11. Adhesive. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] To further illustrate each embodiment, the present utility model provides accompanying drawings, which are part of the disclosure of the present utility model. These drawings mainly serve to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible embodiments and the advantages of the present utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0022] According to an embodiment of the present utility model, a transformer for improving the misalignment of segmented air gaps is provided.
[0023] Embodiment 1;
[0024] As Figures 1-4 shown, the transformer for improving the misalignment of segmented air gaps according to an embodiment of the present utility model includes a first magnetic core 1 and a second magnetic core 2. A central column 3 is provided between the first magnetic core 1 and the second magnetic core 2. A plurality of uniformly distributed magnetic sheets 4 are provided on the central column 3. An insulating sheet 5 is provided between every two magnetic sheets 4. An air gap 6 is formed between the first magnetic core 1 and the second magnetic core 2. A heat dissipation insulating member 7 is provided in the air gap 6.
[0025] Embodiment 2;
[0026] As Figures 1-4 shown, the number of the air gaps 6 is two groups, and the heat dissipation insulating member 7 includes an insulating sheet 2 and a heat dissipation body on the side surface of the insulating sheet 2. The first magnetic core 1, the second magnetic core 2, and the central column 3 are in the shape of a cuboid, a cylinder, a polygonal prism, or an irregular column. The surfaces of the first magnetic core 1 and the second magnetic core 2 are provided with impregnated paint 8.
[0027] Embodiment 3;
[0028] As Figures 1-4 shown, a skeleton 9 sleeving the magnetic sheets 4 and the insulating sheet 5 is provided in the first magnetic core 1 and the second magnetic core 2. A coil 10 is wound on the skeleton 9. An adhesive 11 corresponding to and connected with the first magnetic core 1 and the second magnetic core 2 is provided on the magnetic sheets 4 at both ends.
[0029] In summary, by means of the above technical solutions of the present utility model, multiple magnetic sheets 4 and insulating sheets 5 are alternately loaded into the central column 3 in a tightly fitting manner, so that the magnetic sheets 4 are completely fixed on the central column 3 and cannot be misaligned left and right, greatly reducing the inductance defects caused by the misalignment of the magnetic sheets 4. Moreover, the dispensing operation time for each magnetic sheet 4 is saved, achieving the effect of reducing the cost of the transformer. The design of the air gap 6 and the heat dissipation insulating member 7 enables the saturation value of the magnetic core to be raised higher, the distribution of the magnetic circuit to be more balanced, and the heat dissipation body can bond the insulating sheet 2 to the side wall of the air gap 6, while reducing the temperature of the magnetic core, facilitating heat dissipation, and further increasing the saturation value.
[0030] 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 substitutions, 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 transformer for improving the misalignment of segmented air gaps, characterized in that It includes a first magnetic core (1) and a second magnetic core (2). A central column (3) is provided between the first magnetic core (1) and the second magnetic core (2). A number of evenly distributed magnetic sheets (4) are provided on the central column (3). An insulating sheet one (5) is provided between every two magnetic sheets (4). An air gap (6) is formed between the first magnetic core (1) and the second magnetic core (2). A heat dissipation insulating member (7) is provided in the air gap (6).
2. The transformer for improving the misalignment of segmented air gaps according to claim 1, characterized in that, The number of the air gaps (6) is two groups, and the heat dissipation insulating member (7) includes an insulating sheet two and a heat dissipation body located on the side surface of the insulating sheet two.
3. A transformer for improving the misalignment of segmented air gaps according to claim 1, wherein, The first magnetic core (1), the second magnetic core (2) and the central column (3) are in the shape of a cuboid, a cylinder, a polygonal prism or an irregular column.
4. A transformer for improving the misalignment of segmented air gaps according to claim 1, characterized in that, The surfaces of the first magnetic core (1) and the second magnetic core (2) are provided with impregnating varnish (8).
5. A transformer for improving the misalignment of segmented air gaps according to claim 1, characterized in that, A skeleton (9) sleeving the magnetic sheets (4) and the insulating sheet one (5) is provided in the first magnetic core (1) and the second magnetic core (2). A coil (10) is wound on the skeleton (9).
6. The transformer for improving the misalignment of segmented air gaps according to claim 1, characterized in that, Adhesives (11) corresponding to and connected with the first magnetic core (1) and the second magnetic core (2) are provided on the magnetic sheets (4) at both ends.