Transformer

Abstract

The invention provides a transformer, and relates to the field of electric control systems. The parallel winding is arranged above the first primary winding, and the parallel winding comprises the power supply winding and the shielding winding which are wound in parallel; a secondary winding, wherein the secondary winding is arranged above the parallel winding; and the second primary winding is arranged above the secondary winding. Therefore, the power supply winding and the shielding winding are combined into the parallel winding by adopting a parallel winding technology, so that the overall structure of the transformer is simplified, and the use of one winding is successfully reduced. Due to the improvement, the occupied space of the transformer is directly reduced, and the manufacturing cost is further reduced. Meanwhile, on the basis that the original functions of the transformer are kept, the stability and reliability of the transformer are improved, and the transformer can be widely and efficiently applied to the field of electric control systems.

Description

Technical Field

[0001] This invention relates to the field of electrical control system technology, and more specifically, to a transformer. Background Technology

[0002] In electronic devices, electromagnetic compatibility (EMC) is a key indicator for ensuring stable operation. As a core component for energy conversion and signal transmission, the winding method of transformers significantly impacts EMC performance and circuit integration. Therefore, simplifying the winding process and reducing space occupation while improving electromagnetic interference immunity has become an important direction for transformer design optimization.

[0003] Common transformer winding techniques for reducing EMC have significant limitations: On the one hand, anti-interference measures often involve winding a separate layer of copper foil (without connecting the beginning and end and one end grounded) between the primary and secondary windings, or winding a layer of copper wire with its end suspended from the grounding pin as shielding, which can only achieve basic electromagnetic isolation; on the other hand, see... Figure 1 The power supply requirement necessitates the additional winding of a separate power supply winding between the primary and secondary windings, with the number of turns determined by the supply voltage. This approach requires both a shielding winding and a power supply winding, which not only complicates the winding process but also necessitates the addition of insulating tape due to the extra winding layer, resulting in an increase in the total thickness of the copper wire and occupying more space. This hinders the miniaturization and integration of the equipment. Summary of the Invention

[0004] In view of the large space occupied by existing transformers, the present invention proposes a transformer, the transformer comprising:

[0005] First primary winding;

[0006] A parallel winding is provided above the first primary winding, and the parallel winding includes the power supply winding and the shielding winding wound in parallel.

[0007] Secondary winding, wherein the secondary winding is disposed above the parallel winding;

[0008] The second primary winding is disposed above the secondary winding.

[0009] As one possible implementation, the transformer further includes:

[0010] An insulating tape is disposed between adjacent first primary windings, parallel windings, secondary windings, and second primary windings.

[0011] In one possible implementation, the starting pin of the first primary winding is connected to the high-voltage terminal of the power supply, and the ending pin is connected to the starting pin of the second primary winding.

[0012] In one possible implementation, the starting pin of the parallel winding is grounded, one of the ending pins is not connected to other lines, and the other pin is connected to the positive terminal of the power supply.

[0013] In one possible implementation, the starting pin of the secondary winding is grounded, and the ending pin is connected to the output terminal.

[0014] In one possible implementation, the end pin of the secondary winding is connected to the output terminal via a rectifier diode.

[0015] As one possible implementation, the transformer further includes:

[0016] The field-effect transistor has its drain connected to the end pin of the second primary winding, its gate connected to the control chip, and its source grounded.

[0017] As one possible implementation, the transformer further includes:

[0018] The rectifier bridge connects the starting pin of the first primary winding to the high-voltage power supply terminal.

[0019] The transformer provided in the embodiments of the present invention includes a first primary winding; a parallel winding disposed above the first primary winding, the parallel winding including the power supply winding and the shielding winding wound in parallel; a secondary winding disposed above the parallel winding; and a second primary winding disposed above the secondary winding.

[0020] By combining the power supply winding and the shielding winding into a parallel winding using parallel winding technology, the overall structure of the transformer is simplified, and the use of one winding is successfully reduced. This improvement directly leads to a reduction in the space occupied by the transformer, thereby lowering manufacturing costs. At the same time, this design improves the stability and reliability of the transformer while maintaining its original functions, making its application in electrical control systems more widespread and efficient. Attached Figure Description

[0021] Figure 1 This is a structural diagram of a transformer, an embodiment of the prior art;

[0022] Figure 2 This is a structural diagram of a transformer according to an embodiment of the present invention;

[0023] Figure 3 This is a circuit diagram of a transformer according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures

[0025] 1-First primary winding; 2-Parallel winding; 3-Secondary winding; 4-Second primary winding; 5-Insulating tape. Detailed Implementation

[0026] In existing transformers, to improve electromagnetic interference resistance and optimize space utilization, a separate shielding winding is typically installed between the primary and secondary windings. Additionally, a power supply winding is required to meet power supply demands. This design complicates the winding process, necessitates the use of insulating tape to ensure insulation performance, and consequently increases the total thickness of the copper wire, significantly increasing the overall size and weight of the transformer, hindering miniaturization and integration. The transformer provided in this embodiment, however, utilizes an innovative parallel winding technology to combine the power supply winding and shielding winding into a single parallel winding, directly reducing the number of windings and the use of insulating tape. This improvement not only simplifies the winding process and reduces material costs but also significantly reduces the transformer's size by decreasing the total thickness of the copper wire. This allows the transformer to maintain its original functionality while possessing stronger electromagnetic interference resistance and higher stability, providing a more efficient and reliable solution for the field of electrical control systems.

[0027] The following is combined Figure 2 The transformer structure of this embodiment will be described, and the transformer includes:

[0028] First primary winding 1;

[0029] Parallel winding 2, the parallel winding 2 is disposed above the first primary winding 1, the parallel winding 2 includes the power supply winding and the shielding winding wound in parallel;

[0030] Secondary winding 3, which is disposed above the parallel winding 2;

[0031] The second primary winding 4 is disposed above the secondary winding 3.

[0032] By combining the power supply winding and the shielding winding into a parallel winding using parallel winding technology, the overall structure of the transformer is simplified, and the use of one winding is successfully reduced. This improvement directly leads to a reduction in the space occupied by the transformer, thereby lowering manufacturing costs. At the same time, this design improves the stability and reliability of the transformer while maintaining its original functions, making its application in electrical control systems more widespread and efficient.

[0033] Optionally, insulating tape 5 is provided between adjacent primary winding 1, parallel winding 2, secondary winding 3, and secondary winding 4. The insulating tape 5 provides good insulation and isolation, preventing short circuit faults caused by electrical contact between the windings, and ensuring the safety and stability of the transformer during operation.

[0034] In one possible implementation, the first primary winding 1 serves as the starting part of the input terminal. Its starting pin PN1 is connected to the high-voltage end of the power supply, providing the initial electrical energy input for the entire transformer. Its ending pin PN2 is connected to the starting pin PN2 of the second primary winding 4, forming the initial current transmission path. The ending pin PN3 of the second primary winding 4 is then connected to subsequent control components or the load terminal according to the specific circuit design requirements to complete the further transmission and conversion of electrical energy.

[0035] In parallel winding 2, the core innovation lies in the parallel winding design of the power supply winding and the shielding winding. The power supply winding is responsible for providing the necessary stable voltage to the internal or external circuits of the transformer, while the shielding winding, through grounding, effectively shields against external electromagnetic interference, protecting the internal circuits of the transformer from influence. The starting pin PN4 of parallel winding 2 is grounded to ensure stable and reliable shielding. One of the ending pins, PN5, is not connected to other lines, forming an open circuit to avoid unnecessary current loops. The other pin, PN6, is connected to the positive terminal VCC+ of the power supply, providing power input to the power supply winding.

[0036] Secondary winding 3 serves as the output terminal of the transformer. Its starting pin PN8 is also grounded to maintain the stability of the output voltage, while the ending pin PN9 is directly connected to the output terminal to deliver the converted electrical energy to the load equipment.

[0037] In addition, see Figure 3 , Figure 3 The transformer of this embodiment is illustrated in circuit diagram form. In this embodiment (flyback switching power supply circuit), the terminal PN9 of the secondary winding 3 is also connected to the output terminal through a rectifier diode F7 to achieve AC-to-DC conversion, meeting the DC power requirements of specific load devices. The two diagrams A and B circled in red are the same transformer; B represents the auxiliary winding of transformer A. The transformer also integrates a field-effect transistor AN2, whose drain is connected to the terminal of the second primary winding 4, its gate is connected to the control chip U3, and its source is grounded. Through precise control by the control chip U3, the field-effect transistor AN2 can flexibly adjust the transformer's output voltage or current, improving the transformer's intelligent control level. Simultaneously, the rectifier bridge DB2 further optimizes the transformer's power conversion efficiency. The starting terminal of the first primary winding 1 is connected to the high-voltage end of the power supply through the rectifier bridge DB2, performing preliminary rectification of the input AC power to provide a more stable DC power foundation for subsequent power conversion. Other components can be set as needed and are not limited here.

[0038] In summary, the transformer in this embodiment integrates the power supply winding and the shielding winding into a single parallel winding using parallel winding technology, significantly simplifying the structural design of traditional transformers that require separate windings. This innovation not only reduces the number of windings and the amount of insulating tape used, but also lowers material costs and overall thickness through optimized copper wire layout. In terms of functionality, the coordinated operation of the power supply winding and the shielding winding in the parallel winding ensures stable voltage output and effectively suppresses electromagnetic interference through grounding design. Combined with the integrated application of MOSFETs and a rectifier bridge, the transformer achieves precise control of output parameters and improved power conversion efficiency.

[0039] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-disclosed concept. For example, technical solutions formed by substituting the above-described features with technical features having similar functions disclosed in this invention.

[0040] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this invention.

Claims

1. A transformer, characterized in that, The transformer includes: First primary winding; A parallel winding is provided above the first primary winding, and the parallel winding includes the power supply winding and the shielding winding wound in parallel. Secondary winding, wherein the secondary winding is disposed above the parallel winding; The second primary winding is disposed above the secondary winding.

2. The transformer according to claim 1, characterized in that, The transformer also includes: An insulating tape is disposed between adjacent first primary windings, parallel windings, secondary windings, and second primary windings.

3. The transformer according to claim 1, characterized in that, The starting pin of the first primary winding is connected to the high-voltage terminal of the power supply, and the ending pin is connected to the starting pin of the second primary winding.

4. The transformer according to claim 1, characterized in that, The starting pin of the parallel winding is grounded, one of the ending pins is not connected to other lines, and the other pin is connected to the positive terminal of the power supply.

5. The transformer according to claim 1, characterized in that, The starting pin of the secondary winding is grounded, and the ending pin is connected to the output terminal.

6. The transformer according to claim 1, characterized in that, The end pin of the secondary winding is connected to the output terminal via a rectifier diode.

7. The transformer according to claim 1, characterized in that, The transformer also includes: The field-effect transistor has its drain connected to the end pin of the second primary winding, its gate connected to the control chip, and its source grounded.

8. The transformer according to claim 1, characterized in that, The transformer also includes: The rectifier bridge connects the starting pin of the first primary winding to the high-voltage power supply terminal.

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