Anti-interference network transformer module
By adopting the design of surface-adhesive transformer and surge protection component group, the high labor cost and interference problems in traditional packaging wafer production are solved, fully automated production and component stability are achieved, and lightning strike and electromagnetic interference suppression capabilities are improved.
Patent Information
- Application Number
- CN202422175056.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-12-19
- Filing Date
- 2024-09-05
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-05
AI Technical Summary
In the prior art, the production method of traditional packaging wafers is semi-automated, resulting in high unqualification rates and easy interference from components, increased labor costs, and components scattered on the substrate without being integrated.
The surface-adhesive transformer and surge protection element group are adopted to achieve fully automated and modular production through the electrical connection and grounding circuit design on the substrate. After the components are integrated, the high impedance is converted to low impedance to suppress interference.
It realizes fully automated production, reduces the manpower demand and unqualification rate on the production line, stabilizes component characteristics, reduces the substrate area, and improves the lightning resistance and electromagnetic interference suppression effect.
Smart Images
Figure CN223155794U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an anti-interference network transformer module, in particular to an integrated surface-mounted transformer and a surface-mounted surge protection component group. Background Art
[0002] Traditional packaged chips usually have an isolation transformer and multiple protection components electrically arranged on a circuit board. The coils of the isolation transformer are usually made by manual winding. After the isolation transformer and these protection components are arranged on the circuit board, manual wiring is also used to electrically connect these components to each other. The disadvantages of manufacturing traditional packaged chips in the foregoing manner are that the production is carried out in a semi-automatic manner, it is difficult to reduce the unqualified rate of products, and the components are scattered on the substrate without integration, thus causing problems that the components are prone to interference during operation. Even in the case of seasonal labor shortages, the labor cost increases correspondingly, resulting in a significant increase in the production cost of products. Summary of the Utility Model
[0003] The main purpose of the utility model is to provide an anti-interference network transformer module, which includes a substrate, multiple surface-mounted transformers and a surface-mounted surge protection component group. The substrate has multiple first electrical connection areas, multiple second electrical connection areas and a grounding line; the multiple surface-mounted transformers are respectively electrically arranged with the multiple first electrical connection areas, and each surface-mounted transformer has a primary side, and the primary side has a primary side center tap port; the surface-mounted surge protection component group has multiple first surface-mounted surge protection components, which are respectively electrically arranged with the second electrical connection areas, so that each first surface-mounted surge protection component is respectively connected between the primary side center tap port and the grounding line. When the voltage of the primary side center tap port is higher than the first voltage rated value, the impedance is reduced from high impedance to low impedance.
[0004] Furthermore, each surface-mounted transformer has a secondary side opposite to the primary side, each first electrical connection area has multiple first electrical contacts, each surface-mounted transformer also has a base, a pair of coils and multiple first pads, the coils form the primary side and the secondary side, the coils are wound around the base and the terminals of the primary side and the secondary side are electrically connected to the first pads, and each first pad is electrically connected to each first electrical contact.
[0005] Further, the multiple second electrical connection regions each have multiple third electrical contact points. Each of the second surface-mounted surge protection components has a second surge protection encapsulation unit and two third pads. The multiple third pads are respectively fixed at two ends of the second surge protection encapsulation unit and are electrically connected to the second surge protection encapsulation unit. Each of the third pads is electrically connected to each of the third electrical contact points.
[0006] Further, the secondary side has a secondary side output port. The surface-mounted surge protection component group has multiple second surface-mounted surge protection components, which are respectively electrically arranged with the second electrical connection regions, so that the second surface-mounted surge protection components are connected to the secondary side output port and change from a high impedance to a low impedance when the voltage of the secondary side output port is higher than a second voltage rating.
[0007] Further, each of the second surface-mounted surge protection components has a second surge protection encapsulation unit and two third pads. The multiple third pads are respectively fixed at two ends of the second surge protection encapsulation unit and are electrically connected to the second surge protection encapsulation unit. Each of the third pads is electrically connected to each of the second electrical contact points.
[0008] Further, the substrate has multiple connection pins respectively electrically connected to the connection pins of the primary side input port and the secondary side output port.
[0009] Further, the substrate includes at least two and is respectively electrically connected to the ground pins of the ground line.
[0010] Further, each of the first surface-mounted surge protection components is a varistor or a gas discharge tube, and each of the second surface-mounted surge protection components is a transient voltage suppressor.
[0011] Further, the multiple first electrical connection regions and the multiple second electrical connection regions are respectively formed on the same side bearing surface of the substrate.
[0012] Further, the substrate has two opposite bearing surfaces, and the multiple first electrical connection regions and the multiple second electrical connection regions are respectively formed on the multiple bearing surfaces.
[0013] Therefore, the present utility model has the following advantageous effects compared with the prior art: By changing the transformer and the surge protection element into surface-mounted components (SMD components), the anti-interference network transformer module of the present utility model can be changed to a fully automated and modular design, which not only reduces the manpower requirement on the production line but also effectively reduces the unqualified rate of the product, stabilizes the component characteristics, and at the same time enables flexible adjustment of the layout of each component on the substrate, effectively utilizes the usable area on the substrate and correspondingly reduces the overall area of the substrate. The anti-interference network transformer module of the present utility model also has better lightning protection ability and can suppress electromagnetic interference. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 FIG. is a schematic diagram of a usage state of a first embodiment of the anti-interference network transformer module of the present utility model.
[0015] Figure 2 FIG. is an exploded schematic diagram of a first embodiment of the anti-interference network transformer module of the present utility model.
[0016] Figure 3 FIG. is a three-dimensional schematic diagram of a surface-mounted transformer of a first embodiment of the anti-interference network transformer module of the present utility model.
[0017] Figure 4 FIG. is a circuit schematic diagram of a first embodiment of the anti-interference network transformer module of the present utility model.
[0018] Figure 5 FIG. is a side view schematic diagram of a second embodiment of the anti-interference network transformer module of the present utility model.
[0019] The labels in the figures are as follows:
[0020] 10 Anti-interference network transformer module
[0021] 20 Anti-interference network transformer module
[0022] 1 Substrate
[0023] 11 Carrying surface / First carrying surface
[0024] 12 Second carrying surface
[0025] 13 First electrical connection area
[0026] 13a First electrical contact point
[0027] 14 Second electrical connection area
[0028] 14a Second electrical contact point
[0029] 14b Third electrical contact point
[0030] 15 Grounding line
[0031] 16 Connection pins
[0032] 17 Grounding pins
[0033] 2 Surface-mounted transformer
[0034] 21 Base
[0035] 21a Bottom surface
[0036] 22 Coil
[0037] 221 Primary side
[0038] 221a Primary side input port
[0039] 221b Primary side center tap port
[0040] 222 Secondary side
[0041] 222a Secondary side output port
[0042] 23 First pad
[0043] 3 Surface-mounted surge protection component group
[0044] 31 First surface-mounted surge protection component
[0045] 31a First surge protection package unit
[0046] 31b Second pad
[0047] 32 Second surface-mounted surge protection component
[0048] 32a Second surge protection package unit
[0049] 32b Third pad
[0050] 100 Network switch
[0051] 30 Signal input slot
[0052] 40 Internal signal processing unit Detailed implementation manner
[0053] For the detailed description and technical content of the present utility model, it is described as follows in conjunction with the accompanying drawings. Furthermore, for the convenience of description, the scale of the drawings in the present utility model may not be drawn according to the actual scale, and the multiple drawings and their scales are not used to limit the scope of the present utility model, which is hereby stated in advance.
[0054] The first embodiment of the present utility model is an anti-interference network transformer module 10, as Figure 1As shown, it is a schematic diagram of the usage state of the anti-interference network transformer module 10 according to the first embodiment of the present invention, which can be installed on a network switch 100. The network switch 100 at least includes a signal input slot 30 and an internal signal processing unit 40. In this embodiment, the anti-interference network transformer module 10 is disposed at the rear end of the signal input slot 30 for receiving and transmitting digital signals through the signal input slot 30, so as to achieve the effect of preventing surges from burning out internal circuits. The anti-interference network transformer module 10 of the first embodiment of the present invention will be described in detail below.
[0055] Please refer to Figure 1 and Figure 2 , Figure 2 which is an exploded schematic diagram of the anti-interference network transformer module according to the first embodiment of the present invention. The anti-interference network transformer module 10 of this embodiment includes a substrate 1, a plurality of surface-mounted transformers 2, and a surface-mounted surge protection element group 3. The plurality of surface-mounted transformers 2 and the surface-mounted surge protection element group 3 are electrically disposed on the substrate 1. The detailed structures of each element and the connection relationship between them will be described in detail in the following paragraphs.
[0056] In the first embodiment of the present invention, the substrate 1 has a bearing surface 11, a plurality of first electrical connection areas 13, a plurality of second electrical connection areas 14, a grounding line 15, a plurality of connection pins 16, and two grounding pins 17. The plurality of first electrical connection areas 13 are formed on the bearing surface 11, and each of the first electrical connection areas 13 has a plurality of first electrical contacts 13a. The plurality of second electrical connection areas 14 are formed on the bearing surface 11 and are adjacent to the first electrical connection areas 13. The plurality of second electrical connection areas 14 have a plurality of second electrical contacts 14a and a plurality of third electrical contacts 14b adjacent to each other. The plurality of grounding pins 17 are respectively connected to the grounding line 15. Among them, in this embodiment, each first electrical connection area 13 has six first electrical contacts 13a, and each second electrical connection area 14 has two second electrical contacts 14a or two third electrical contacts 14b. However, in other embodiments of the present invention, the number of the first electrical contacts 13a, the second electrical contacts 14a, or the third electrical contacts 14b is not limited, and can be adjusted according to requirements.
[0057] As Figure 3As shown, it is a three-dimensional schematic diagram of a surface-mount transformer 2. Each surface-mount transformer 2 has a base 21, a pair of coils 22, and a plurality of first pads 23. The coils 22 form a primary side 221 and a secondary side 222. The coils 22 are wound around the base 21 by a machine so that one terminal of the primary side 221 and one terminal of the secondary side 222 are electrically connected to each first pad 23. In this embodiment, the number of the plurality of first pads 23 is six, and they are formed on a bottom surface 21a of the base 21. Thus, referring to Figure 2 , the surface-mount transformer 2 of the present utility model can be quickly manufactured through fully automated machine production. And since the plurality of first pads 23 are neatly arranged on the bottom surface 21a, the machine can quickly align each surface-mount transformer 2 with each first electrical connection area 13, so that every six first pads 23 are electrically joined to every six first electrical contacts 13a. This accelerates the speed of component configuration on the substrate 1 and enables the plurality of surface-mount transformers 2 to be neatly arranged on the substrate 1, effectively utilizing the usage area of the bearing surface 11 and ensuring a good electrical connection relationship at the same time.
[0058] Figure 4 The following is a circuit schematic diagram of the anti-interference network transformer module 10 of this embodiment. Please also refer to Figure 1 and Figure 2 , the plurality of surface-mount transformers 2 can be used in conjunction with a signal transceiver unit (not shown in the figure). Each set of signal transceiver units includes a data transmission line and a data reception line. The data transmission line and the data reception line are respectively paired with each surface-mount transformer 2. Taking the data reception line as an example, each surface-mount transformer 2 has a primary side 221 and a secondary side 222 coupled to the primary side 221. The primary side 221 has a primary side input port 221a electrically connected to the signal input slot 30 and a primary side center tap port 221b for capturing the DC signal of the primary side input port 221a. The secondary side 222 has a secondary side output port 222a for transmitting the signal of the primary side input port 221a to the internal signal processing unit 40, and the plurality of connection pins 16 of the aforementioned substrate 1 are electrically connected to the primary side input port 221a and the secondary side output port 222a respectively.
[0059] Refer to Figure 2, the surface-mounted surge protection component group 3 has a plurality of first surface-mounted surge protection components 31 and a plurality of second surface-mounted surge protection components 32. Each first surface-mounted surge protection component 31 has a first surge protection encapsulation unit 31a and two second pads 31b. A plurality of the second pads 31b are respectively fixed at both ends of the first surge protection encapsulation unit 31a and are electrically connected to the first surge protection encapsulation unit 31a. Also, each second surface-mounted surge protection component 32 has a second surge protection encapsulation unit 32a and two third pads 32b. A plurality of the third pads 32b are respectively fixed at both ends of the second surge protection encapsulation unit 32a and are electrically connected to the second surge protection encapsulation unit 32a. Thus, the structure of the first surface-mounted surge protection component 31 can be simply classified into the first surge protection encapsulation unit 31a and two second pads 31b, and the structure of the second surface-mounted surge protection component 32 can be simply classified into the second surge protection encapsulation unit 32a and two third pads 32b, making the assembly simpler and faster after classification. Moreover, the positions of the second pads 31b and the third pads 32b are fixed, and the machine can quickly align each first surface-mounted surge protection component 31 and second surface-mounted surge protection component 32 with each second electrical connection area 14, so that every two second pads 31b are electrically joined to every two second electrical contacts 14a, and every two third pads 32b are electrically joined to every two third contacts. Thereby, the speed of arranging the components on the substrate 1 is accelerated, and the surface-mounted surge protection component group 3 can be neatly arranged on the substrate 1, and the usable area of the bearing surface 11 can be effectively utilized while ensuring a good electrical connection relationship.
[0060] Each first surface-mounted surge protection component 31 is electrically connected to the secondary side output port 222a through a plurality of the second contacts, and each second surface-mounted surge protection component 32 is electrically connected to the primary side center tap port 221b through a third contact. Since the first surface-mounted surge protection component 31 is disposed on the primary side 221 (high voltage side), it can be a varistor or a gas discharge tube with a relatively high surge voltage tolerance. The second surface-mounted surge protection component 32 is disposed on the secondary side 222 and can be a transient voltage suppressor with a relatively fast response speed to protect the internal components of the network switch 100. Among them, in the circuit operation mode of this embodiment, when a lightning surge falls on an external cable (not shown in the figure) and is transmitted to the signal input slot 30, and when the voltage at the primary side center tap port 221b is higher than the first voltage rating, the first surface-mounted surge protection component 31 on the primary side 221 will generate a breakdown arc due to the high voltage of the surge, and the impedance of the first surface-mounted surge protection component 31 will be much smaller than the impedance of the primary side 221. At this time, most of the surge energy will be guided to the ground line 15 through the first surface-mounted surge protection component 31 to release the energy outward. At the same time, to prevent the first surface-mounted surge protection component 31 from failing to immediately release the high voltage surge introduced by lightning and burning the circuit at the back end of the secondary side 222, when the voltage at the secondary side output port 222a is higher than the second voltage rating, the second surface-mounted surge protection component 32 connected in parallel to the secondary side output port 222a forms a reverse breakdown current due to the breakdown of the surge high voltage. At this time, the impedance of the second surface-mounted surge protection component 32 is much smaller than the impedance of the internal circuit of the network switch 100, so that the second surface-mounted surge protection component 32 and the secondary side 222 form a closed loop to prevent the lightning surge from flowing into the internal circuit of the network switch 100. The first voltage rating and the second voltage rating of the present utility model are set in accordance with the safety regulations standards formulated by the industry and are not used to limit the scope of this case.
[0061] Refer Figure 1 and Figure 4 , one end of a plurality of the first surface-mounted surge protection components 31 is electrically connected to the ground line 15. When a surge voltage enters through the signal input slot 30, the first surface-mounted surge protection component 31 is in a short-circuit state. At this time, the energy can be guided to the ground line 15 through the first surface-mounted surge protection component 31 to obtain energy release. It should be noted that the extending direction of the ground line 15 is a preferred embodiment of the present utility model and does not limit the scope of the present utility model. In other words, the setting of the pin configuration can have different configurations according to the manufacturing requirements and is not used to limit the present utility model. It is described here first.
[0062] Please refer Figure 5, which is a side view schematic diagram of one side of the anti-interference network transformer module 20 according to the second embodiment of the present utility model. The difference between this embodiment and the first embodiment is that the substrate 1 of this embodiment has a first bearing surface 11 and a second bearing surface 12 opposite to each other. A plurality of first electrical connection areas 13 are formed on the first bearing surface 11, and a plurality of second electrical connection areas 14 are formed on the second bearing surface 12. A plurality of surface-mounted transformers 2 of the anti-interference network transformer module 20 in this embodiment are electrically arranged on a plurality of the first electrical connection areas 13, so that a plurality of first electrical contact points 13a of the first electrical connection areas 13 are electrically connected to a plurality of first pads 23 of the surface-mounted transformer 2. The surface-mounted surge protection element group 3 in this embodiment is electrically arranged with the second electrical connection areas 14 on the second bearing surface 12, so that a plurality of second pads 31b of the first surface-mounted surge protection element 31 are respectively electrically connected to a plurality of second electrical contact points 14a of the second electrical connection areas 14, and a plurality of third pads 32b of the second surface-mounted surge protection element 32 are respectively electrically connected to a plurality of third electrical contact points 14b of the second electrical connection areas 14. The advantage of the configuration method in this embodiment is that it can avoid the surface-mounted transformer 2 from contacting the surface-mounted surge protection element group 3 or its circuit, thereby stabilizing the signal, reducing electromagnetic interference EMI, and increasing the safety of the circuit.
[0063] In summary, compared with the prior art, the present utility model has the following advantageous effects: The transformer and the surge protection element are changed to surface-mounted elements (SMD elements). Therefore, the anti-interference network transformer module of the present utility model can be changed to a fully automated and modular design, which not only reduces the manpower requirement on the production line, but also effectively reduces the unqualified rate of products, makes the element characteristics stable, and at the same time can flexibly adjust the layout of each element on the substrate, effectively utilizes the use area on the substrate and correspondingly reduces the overall area of the substrate. The anti-interference network transformer module of the present utility model also has better lightning protection ability and can suppress electromagnetic interference.
[0064] The present utility model has been described in detail above. The above description is only a preferred embodiment of the present utility model, and it should not be used to limit the scope of implementation of the present utility model. That is, all equal changes and modifications made according to the scope of the patent application of the present utility model should still fall within the scope covered by the patent of the present utility model.
Claims
1. An anti-interference network transformer module, characterized in that Comprising: A substrate having a plurality of first electrical connection regions, a plurality of second electrical connection regions, and a ground line; A plurality of surface-mounted transformers electrically disposed respectively with the plurality of first electrical connection regions, each of the surface-mounted transformers having a primary side with a primary side center tap port; and A surface-mounted surge protection component group having a plurality of first surface-mounted surge protection components electrically disposed respectively with the second electrical connection regions, such that each of the first surface-mounted surge protection components is connected respectively between the primary side center tap port and the ground line. When the voltage of the primary side center tap port is higher than a first voltage rating, the first surface-mounted surge protection component changes from a high impedance to a low impedance.
2. The anti-interference network transformer module according to claim 1, wherein Each of the surface-mounted transformers has a secondary side opposite to the primary side. Each of the first electrical connection regions has a plurality of first electrical contacts. Each of the surface-mounted transformers further has a base, a pair of coils, and a plurality of first pads. The coils form the primary side and the secondary side, the coils wind around the base, and the terminals of the primary side and the secondary side are electrically connected to the first pads respectively, and each of the first pads is electrically connected to each of the first electrical contacts.
3. The anti-interference network transformer module according to claim 2, wherein Each of the second electrical connection regions has a plurality of second electrical contacts. Each of the first surface-mounted surge protection components has a first surge protection package unit and two second pads. The plurality of second pads are fixed respectively at both ends of the first surge protection package unit and electrically connected to the first surge protection package unit, and each of the second pads is electrically connected to each of the second electrical contacts.
4. The anti-interference network transformer module according to claim 3, characterized in that, The secondary side has a secondary side output port. The surface-mounted surge protection component group has a plurality of second surface-mounted surge protection components electrically disposed respectively with the second electrical connection regions, such that each of the second surface-mounted surge protection components is connected to the secondary side output port. When the voltage of the secondary side output port is higher than a second voltage rating, the second surface-mounted surge protection component changes from a high impedance to a low impedance.
5. The anti-interference network transformer module according to claim 4, wherein The plurality of second electrical connection regions have a plurality of third electrical contacts adjacent to the plurality of second electrical contacts. Each of the second surface-mounted surge protection components has a second surge protection package unit and two third pads. The plurality of third pads are fixed respectively at both ends of the second surge protection package unit and electrically connected to the second surge protection package unit, and each of the third pads is electrically connected to each of the third electrical contacts.
6. The anti-interference network transformer module according to claim 5, wherein The substrate has a plurality of connection pins electrically connected respectively to a primary side input port of the primary side and a connection pin of the secondary side output port.
7. The anti-interference network transformer module according to claim 6, characterized in that, The substrate includes at least two and is electrically connected respectively to the ground pins of the ground line.
8. The anti-interference network transformer module according to claim 7, characterized in that, Each of the first surface-mounted surge protection components is a varistor or a gas discharge tube, and each of the second surface-mounted surge protection components is a transient voltage suppressor.
9. The anti-interference network transformer module according to claim 8, wherein, The plurality of first electrical connection regions and the plurality of second electrical connection regions are formed respectively on the same side bearing surface of the substrate.
10. The anti-interference network transformer module according to claim 8, wherein, The substrate has two opposite bearing surfaces, and a plurality of the first electrical connection areas and a plurality of the second electrical connection areas are respectively formed on the plurality of bearing surfaces.