Coil winding and transformer

Abstract

The utility model relates to a coil winding and a transformer, and relates to the technical field of transformers, the coil winding comprises a plurality of wires, and each wire is wound into a coil; the multiple coils are stacked in the axial direction to form the coil winding. According to the transformer, the mode that the single wire is wound first and then connected in parallel is adopted, the space between the coils can be more effectively utilized, therefore, gaps are reduced, the overall space utilization rate is increased, and the design of the transformer is more compact; by optimizing the structural design of the coil, the loss caused by the skin effect and the proximity effect can be reduced, the current can be dispersed, the conductive efficiency can be improved and the power loss can be reduced to a certain extent in a manner of connecting multiple wires in parallel, so that the overall efficiency of the transformer is improved.

Description

Technical Field

[0001] This application relates to the field of transformer technology, and in particular to a coil winding and a transformer. Background Technology

[0002] In transformer design, the selection and arrangement of windings have a crucial impact on their performance and size. Traditionally, transformer windings typically use copper foil or copper sheets as conductors. However, under high current conditions, especially with high-frequency alternating current, the losses in copper foil or copper sheets increase significantly due to the skin effect and proximity effect, leading to a decrease in transformer efficiency and an increase in power loss.

[0003] To address this issue, a traditional method involves winding multiple strands of wire in parallel to reduce losses caused by the skin effect and proximity effect. In this traditional method, multiple strands are typically wound in parallel to form a specific number of turns. (See also...) Figure 1 As shown, Figure 1 To illustrate the schematic diagram of a traditional multi-strand parallel winding coil, taking a 6-strand wire parallel winding of 2 turns as an example, the resulting coil winding often occupies a large space in the width direction of the winding wire. Moreover, due to the gaps and unused space between the coils, the overall space utilization rate is low. Especially when winding multiple turns, it often requires a large space, resulting in an increase in the overall size of the transformer, making it difficult to meet the design requirements of balancing size and efficiency.

[0004] To address this issue, there is an urgent need to develop an innovative winding method that can not only reduce losses under high-frequency alternating current operating conditions, but also improve space utilization, reduce gaps during winding, and achieve a more compact structural design while maintaining the transformer's functionality. Utility Model Content

[0005] In order to reduce losses and maintain transformer function under high-frequency alternating current operating conditions, while reducing the gap during winding and improving space utilization, this application provides a coil winding and a transformer.

[0006] The coil winding and transformer provided in this application adopt the following technical solution:

[0007] A coil winding includes multiple wires, each of which is individually wound into a coil; the multiple coils are stacked along their axial direction to form the coil winding.

[0008] By adopting the technical scheme, the space between the coils can be effectively utilized by adopting the single-wire winding and parallel connection mode, thereby reducing the gap and improving the overall space utilization, and the transformer design is more compact; by optimizing the structure design of the coil, the loss caused by the skin effect and proximity effect can be reduced, the parallel connection of multiple wires can disperse the current to a certain extent, improve the conduction efficiency, reduce the power loss, and thereby improve the overall efficiency of the transformer.

[0009] In a specific implementable embodiment, the coil is spirally wound.

[0010] By adopting the technical scheme, the use of the spiral shape allows a more compact layout, the number of turns of the winding can be increased in the same floor area, the gap between the coils is further reduced, and the space utilization is further improved, especially in the case of multiple layers of stacking; and the spiral design makes the current distribution more uniform due to its structural characteristics, thereby reducing the influence of the skin effect and the loss under high-frequency alternating current, and improving the overall efficiency of the transformer.

[0011] In a specific implementable embodiment, the multiple wires are wound in the same spiral direction to form the coil.

[0012] By adopting the technical scheme, the use of the same direction winding mode can ensure that each coil is more consistent in performance, thereby enhancing the stability and reliability of the entire transformer system; and the same direction spiral winding can enhance the magnetic flux aggregation effect of the coil, thereby increasing the inductance value and increasing the energy storage capacity of the coil.

[0013] In a specific implementable embodiment, the wire is spirally wound without gaps to form the coil.

[0014] By adopting the technical scheme, the use of the spiral winding without gaps minimizes the distance between each turn of the coil, enhances the magnetic flux density inside the coil, improves the inductance value, and increases the energy storage capacity of the coil; and can further reduce the gap between the coils, thereby further improving the space utilization.

[0015] In a specific implementable embodiment, the number of turns of winding of the multiple coils is the same.

[0016] By adopting the technical scheme, the use of multiple coils with the same number of turns of winding can ensure that the performance characteristics of each coil are similar, thereby improving the uniformity of the system, reducing the instability caused by the performance difference of the coils, and improving the reliability of the overall system; and the same number of turns of winding allows the current and magnetic field distribution of each coil to remain consistent, thereby effectively avoiding overheating and loss problems caused by uneven load, and thereby improving the durability and safety of the equipment.

[0017] In one specific implementation, the outer surfaces of the plurality of coils are flush.

[0018] By using the above technical solution, the use of flush outer surfaces can effectively reduce the occupied physical space, making the overall layout more compact, improving the integration, and adapting to more limited installation environments; and the flush coils can provide more consistent heat dissipation surfaces, making the heat distribution more uniform, avoiding overheating of some coils due to heat concentration, and improving the cooling effect and reliability of the overall system.

[0019] In one specific implementation, the adjacent two coils are at least partially attached.

[0020] By using the above technical solution, the use of at least partially attached coils can reduce the gap between them, thereby reducing the volume and weight of the overall device while preserving performance, adapting to the demand for compact design; and the partial attachment of adjacent coils can increase the magnetic field interaction between them, improving the efficiency of electromagnetic coupling, thereby improving the energy transmission efficiency of the overall device and reducing energy loss.

[0021] In one specific implementation, the wire diameters of the plurality of wires are the same.

[0022] By using the above technical solution, the use of the same wire diameter, i.e., the wire diameters of the plurality of coils are the same, makes the resistance values of each coil consistent, which can ensure uniform distribution of current in each coil, reduce energy loss caused by resistance differences, and improve the overall efficiency of the system.

[0023] A transformer comprising the coil winding as described above.

[0024] By using the above technical solution, the transformer using the coil winding as described above, by using the optimized design of winding a single wire first and then in parallel, achieves high space utilization and electrical energy efficiency, significantly reduces loss, while enhancing uniform current distribution and inductance performance; the transformer using such a coil winding has significant advantages in performance, energy efficiency and reliability, and is suitable for the needs of modern power systems and electronic devices.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: the present application adopts the method of winding a single wire first and then forming a coil winding in parallel, which has significant advantages in reducing the volume of the transformer, improving the space utilization and energy transmission efficiency; through the spiral winding design, there is no gap winding and partial fitting of adjacent coils, which effectively reduces the gap between the coils, improves the magnetic field interaction and electromagnetic coupling efficiency, and reduces energy loss; in addition, the design of consistent wire diameter and same direction winding ensures consistent performance of each coil, optimizes current distribution and heat dissipation, and improves the stability, reliability and overall efficiency of the transformer; compared with the traditional multi-parallel winding method, the winding method of the present application can significantly reduce the volume of the coil winding on the basis of ensuring performance, adapt to more compact design requirements, and has strong application potential. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram for showing the traditional multi-parallel winding coil winding in the background art.

[0027] Figure 2 is a schematic diagram of the coil winding formed by winding a single wire first and then multiple wires in parallel in the present application.

[0028] Figure 3 is a structural schematic diagram for showing the coil winding of the present application.

[0029] Explanation of reference signs: 1, wire; 2, coil; 3, coil winding. DETAILED DESCRIPTION

[0030] The following will be described in detail in combination with the accompanying Figures 1-3 The present application will be further described in detail.

[0031] Please refer to Figure 2 and Figure 3 The present application embodiment discloses a coil winding, which is applied to but not limited to a transformer;

[0032] The coil winding 3 includes multiple wires 1, in the present embodiment, the wire 1 can be but is not limited to a copper wire, and the multiple wires 1 are wound into coils 2 respectively, in the present embodiment, taking 6 wires 1 wound 2 turns as an example, the 6 wires 1 are wound 2 turns respectively to form the coils 2, that is, 6 coils 2 are obtained; the 6 coils 2 are stacked along the axial direction to form the coil winding 3;

[0033] To further reduce the volume of the transformer and improve the energy transmission efficiency, the adjacent coils 2 are at least partially structured to be attached in the embodiment, and at least half of the structure between the adjacent two coils 2 is arranged to be attached; the partial attachment of the adjacent coils 2 can reduce the gap between the coils 2, thereby effectively reducing the volume and weight of the equipment, meeting the demand for compact design; more importantly, the partial attachment design can increase the magnetic field interaction between the adjacent coils 2, improve the electromagnetic coupling efficiency, thereby improving the energy transmission efficiency and reducing energy loss;

[0034] Unlike the traditional way of winding multiple wires 1 into coils 3 in parallel, the present application uses a single wire 1 to wind into a coil 2 and then parallel to form a coil winding 3, which can more effectively utilize the space between the coils 2, thereby reducing the gap and improving the overall space utilization, making the transformer design more compact; by optimizing the structural design of the coil 2, the loss caused by the skin effect and proximity effect can be reduced, and the parallel connection of multiple wires 1 can disperse the current to some extent, improve the conduction efficiency, and reduce power loss, thereby improving the overall efficiency of the transformer.

[0035] In the embodiment, the coil 2 is spirally wound; spiral winding can significantly improve the space utilization of the coil 2, increase the number of turns of the winding in the same floor area, thereby further reducing the gap between the coils 2; especially in the case of multiple layers of stacking, the use of spiral shape can make the coil 2 more compact and improve the uniform distribution of current, reducing the loss caused by the skin effect; the spiral design can also effectively reduce the energy loss under high-frequency alternating current, thereby improving the overall efficiency and performance of the transformer.

[0036] In the embodiment, the six wires 1 are wound in the same spiral direction to form six coils 2; using the same direction of winding can ensure that each coil 2 is more consistent in performance, thereby enhancing the stability and reliability of the entire transformer system; and the same direction of spiral winding can enhance the magnetic flux concentration effect of the coil 2, thereby increasing the inductance value and increasing the energy storage capacity of the coil 2.

[0037] In the embodiment, the wire 1 is wound without gap to form a coil 2; using the spiral winding method without gap can minimize the gap between each turn of the coil 2, thereby increasing the magnetic flux density of the coil 2, improving the inductance value and energy storage capacity; in addition, the winding method without gap can further optimize the space layout, reduce the gap between the coils 2, improve the space utilization, and make the design of the transformer more compact.

[0038] In the embodiment, the six coils 2 have the same number of winding turns; thus, the performance characteristics of the coils 2 are consistent, and the instability caused by the performance difference between the coils 2 is effectively avoided; by the same number of winding turns, the current and magnetic field distribution of each coil 2 are ensured to be the same, and the overheating and loss problems caused by uneven load are avoided, thereby improving the stability, reliability and safety of the transformer.

[0039] In the embodiment, the outer surfaces of the six coils 2 are flush; thus, the physical space occupied by the coil winding 3 can be effectively reduced, the overall layout is more compact, the integration is improved, and a more limited installation environment is adapted; and the flush coils 2 can provide more consistent heat dissipation surfaces, so that the heat distribution is more uniform, the overheating of some coils 2 due to heat concentration is avoided, and the overall heat dissipation effect and working stability of the transformer are improved.

[0040] The wire diameters of the six wires 1 in the embodiment are the same, i.e., the wire diameters of the six coils 2 are the same; in other embodiments, the wire diameters of the six coils 2 can be different; the design of the six wires 1 with the same wire diameter in the embodiment can ensure that the resistance values of the coils 2 are consistent, thereby ensuring the uniform distribution of the current in the coils 2, avoiding the energy loss caused by the resistance difference between the coils 2, and improving the overall efficiency of the system; in addition, the unified wire diameter design can also simplify the production process and reduce the production cost; when designing a compact transformer, the coils 2 with the same wire diameter can help to optimize the coil winding 3 layout, ensure the close stacking of the coils 2, and at the same time avoid unnecessary gaps caused by different wire diameters, thereby effectively reducing the volume and weight of the coil winding 3.

[0041] In the embodiment, taking the case of 8 wires 1 in parallel and 2 turns, the winding method of the application reduces the width of the transformer winding by 17.5% compared with the traditional winding method, and the volume reduction effect is significant. This shows that by using the winding method of the application, the volume of the transformer can be significantly reduced while maintaining the performance, improving the space utilization, and having strong application advantages.

[0042] The implementation principle of the embodiment of the present application is that: by adopting the mode of first winding a single coil and then forming a coil winding 3 in parallel, significant advantages are achieved in reducing the volume of the transformer, improving the space utilization rate and energy transmission efficiency; by the spiral winding design, there is no gap winding and the partial adhesion of adjacent coils 2, which effectively reduces the gap between the coils 2, improves the magnetic field interaction and electromagnetic coupling efficiency, and reduces the energy loss; in addition, the design of the same diameter and the same direction winding ensures the consistent performance of each coil 2, optimizes the current distribution and heat dissipation, and improves the stability, reliability and overall efficiency of the transformer; compared with the traditional multi-parallel winding mode, the winding mode of the present application can significantly reduce the volume of the coil winding 3 on the basis of ensuring the performance, adapt to more compact transformer design requirements, and has strong application potential.

[0043] The above are preferred embodiments of the present application, but do not limit the protection scope of the present application, therefore: any equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A coil winding, characterized by: The coil winding comprises a plurality of wires, each of the wires is wound into a coil; and the plurality of coils are stacked along an axial direction to form the coil winding.

2. The coil winding of claim 1, wherein: The coil is wound in a spiral shape.

3. A coil winding according to claim 2, characterised in that: The plurality of wires are wound in the same spiral direction to form the coil, or the plurality of wires are wound in different spiral directions to form the coil.

4. A coil winding according to claim 3, characterised in that: The wire is wound into a plurality of turns in a spiral shape, and the plurality of turns of the wire are arranged in close contact or with a gap.

5. The coil winding of claim 1, wherein: The plurality of coils have the same number of turns.

6. The coil winding of claim 1, wherein: The plurality of coils have flush outer surfaces.

7. The coil winding of claim 1, wherein: At least part of two adjacent coils are in close contact.

8. The coil winding of claim 1, wherein: The plurality of wires have the same diameter.

9. A transformer characterized by: The coil winding comprises the coil winding according to any one of claims 1-8.

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