Filter structure

Abstract

A filter structure comprises a substrate, a capacitor element and a first inductor element. The capacitor element and the first inductor element are arranged on the substrate, the first inductor element is provided with a first iron core, two first windings and a first magnetic conductive piece, the first windings are wound on the first iron core, and the first iron core is located in the first magnetic conductive piece and is adjacent to the capacitor element.

Description

Technical Field

[0001] The present invention relates to a filter structure. More specifically, the present invention relates to a filter structure having a magnetic member. Background Art

[0002] Traditional EMC filters tend to have problems such as a decrease in the ability to suppress electromagnetic noise due to limitations in design size and mutual coupling between inductors and capacitors.

[0003] One of the common current practices is to increase the number of turns of the inductance winding of the common-mode choke in the filter and suppress electromagnetic noise by increasing the inductance. However, the foregoing method often increases the DC resistance loss of the EMC filter and degrades the performance of the filter.

[0004] In view of this, how to design a filter structure that can combine small size and high performance has become an important challenge for researchers in this technical field. Summary of the Utility Model

[0005] To overcome the foregoing existing problems, an embodiment of the present invention provides a filter structure, including a substrate, a capacitor element, and a first inductor element. The capacitor element and the first inductor element are disposed on the substrate. The first inductor element has a first iron core, two first windings, and a first magnetic member. The first winding is wound around the first iron core, and the first magnetic member surrounds the first iron core and is adjacent to the capacitor element.

[0006] In an embodiment, the filter structure further includes a second inductor element disposed on the substrate, and the capacitor element is located between the first inductor element and the second inductor element. The second inductor element has a second iron core, two second windings, and a second magnetic member. The second winding is wound around the second iron core, and the second magnetic member surrounds the second iron core and is adjacent to the capacitor element.

[0007] In an embodiment, a part of the first magnetic member is located between the first windings.

[0008] In an embodiment, the substrate is formed with a plurality of elongated first slots, and the first magnetic member passes through the first slots.

[0009] In an embodiment, the first magnetic member has a hollow rectangular structure.

[0010] An embodiment of the present invention further provides a filter structure, including a substrate, a capacitive element, and a first inductive element. The aforementioned capacitive element and the first inductive element are disposed on the aforementioned substrate. The first inductive element has a first iron core, two first windings, and a first magnetic conductor. Wherein the first winding is wound around the first iron core, and the first iron core is located within the first magnetic conductor. Wherein the first magnetic conductor is adjacent to the capacitive element and forms a first opening.

[0011] In one embodiment, the first magnetic conductor has a U-shaped structure, and the first opening and the substrate are located on opposite sides of the first iron core.

[0012] In one embodiment, the first magnetic conductor has a C-shaped structure, and the first opening faces the substrate.

[0013] In one embodiment, the filter structure further includes a second inductive element disposed on the substrate, and the capacitive element is located between the first inductive element and the second inductive element. Wherein the second inductive element has a second iron core, two second windings, and a second magnetic conductor. The second winding is wound around the second iron core, and the second iron core is located within the second magnetic conductor. Wherein the second magnetic conductor is adjacent to the capacitive element and forms a second opening.

[0014] In one embodiment, both the first magnetic conductor and the second magnetic conductor have a C-shaped structure, and the first opening and the second opening face in opposite directions.

[0015] An embodiment of the present invention further provides a filter structure, including a substrate, a capacitive element, and a first inductive element. The capacitive element is disposed on the substrate, and the first inductive element is disposed on the substrate and adjacent to the capacitive element. The first inductive element has an annular first iron core, two first windings, and a first magnetic conductor. Wherein the first iron core has a first through hole, the first winding is wound around the first iron core, the first magnetic conductor is disposed on the first iron core, and the first magnetic conductor shields at least a portion of the first through hole.

[0016] In one embodiment, the projection of the capacitive element along the central axis direction of the first through hole overlaps with the first iron core.

[0017] In one embodiment, the first magnetic conductor abuts against the first iron core, and there is a gap between the first magnetic conductor and the first winding respectively.

[0018] In one embodiment, the first magnetic conductor has a first section portion, and the first section portion is located between the first iron core and the capacitive element.

[0019] In one embodiment, the first magnetic member further has a second segment, the second segment is connected to the first segment, and is bent relative to the first segment.

[0020] In one embodiment, the first magnetic member further has a third segment, the first segment connects the third segment and the second segment, and the third segment is disposed on the substrate.

[0021] In one embodiment, the filter structure further includes a second inductive element, the second inductive element is disposed on the substrate, and the second inductive element has an annular second iron core, two second windings, and a second magnetic member, wherein the second iron core has a second through hole, the second winding is wound around the second iron core, the second magnetic member is disposed on the second iron core, and the second magnetic member shields at least a portion of the second through hole.

[0022] In one embodiment, the first inductive element, the capacitive element, and the second inductive element are sequentially disposed along a central axis direction of the first through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of a filter structure 100 according to an embodiment of the present invention.

[0024] Figure 2 Indicating Figure 1 Another perspective view of the filter structure 100 shown.

[0025] Figure 3 Indicating Figure 1 , Figure 2 An exploded view of the filter structure 100 shown.

[0026] Figure 4 An exploded view of a filter structure 200 according to another embodiment of the present invention.

[0027] Figure 5 Indicating Figure 4 A perspective view of the filter structure 200 shown.

[0028] Figure 6 Indicating Figure 5 Another perspective view of the filter structure 200 shown.

[0029] Figure 7 An exploded view of a filter structure 300 according to another embodiment of the present invention.

[0030] Figure 8 A perspective view of a filter structure 400 according to another embodiment of the present invention.

[0031] Among them, the reference numerals are explained as follows:

[0032] 100: Filter structure

[0033] 11: First inductive element

[0034] A1: Central axis

[0035] E11: First iron core

[0036] E110: First perforation

[0037] S11: First magnetic conductor

[0038] W11: First winding

[0039] 12: Second inductive element

[0040] E12: Second iron core

[0041] E120: Second perforation

[0042] S12: Second magnetic conductor

[0043] W12: Second winding

[0044] 200: Filter structure

[0045] 21: First inductive element

[0046] A2: Central axis

[0047] E21: First iron core

[0048] E210: First perforation

[0049] S21: First magnetic conductor

[0050] S210: First opening

[0051] W21: First winding

[0052] 22: Second inductive element

[0053] E22: Second iron core

[0054] E220: Second perforation

[0055] S22: Second magnetic conductor

[0056] S220: Second opening

[0057] W22: Second winding

[0058] 300: Filter structure

[0059] 31: First inductive element

[0060] A3: Central axis

[0061] E31: First iron core

[0062] E310: First perforation

[0063] S31: First magnetic conductive member

[0064] S310: First opening

[0065] W31: First winding

[0066] 32: Second inductive element

[0067] E32: Second iron core

[0068] E320: Second perforation

[0069] S32: Second magnetic conductive member

[0070] S320: Second opening

[0071] W32: Second winding

[0072] 400: Filter structure

[0073] 41: First inductive element

[0074] A4: Central axis

[0075] E41: First iron core

[0076] E410: First perforation

[0077] S41: First magnetic conductive member

[0078] S411: First segment part

[0079] S412: Second segment part

[0080] S413: Third segment part

[0081] S410: First opening

[0082] W41: First winding

[0083] 42: Second inductive element

[0084] E42: Second iron core

[0085] E420: Second perforation

[0086] S42: Second magnetic conductive member

[0087] S420: Second opening

[0088] W42: Second winding

[0089] B: Substrate

[0090] B1: First slot

[0091] B2: Second slot

[0092] C: Capacitor element Detailed implementation manner

[0093] The filter structure of the embodiments of the present invention will be described below. However, it can be easily understood that the embodiments of the present invention provide many suitable inventive concepts that can be implemented in a wide variety of specific backgrounds. The specific embodiments disclosed are only used to illustrate the use of the present invention in a specific method and are not used to limit the scope of the present invention.

[0094] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It is understood that these terms, such as those defined in a commonly used dictionary, should be interpreted to have a meaning consistent with the relevant technology and the background or context of this disclosure, and should not be interpreted in an idealized or overly formal manner unless specifically defined herein.

[0095] The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used in the embodiments are used for illustration and not for limiting the present invention.

[0096] First, please refer to Figure 1 , Figure 2 , Figure 3 , where Figure 1 shows a perspective view of a filter structure 100 according to an embodiment of the present invention, Figure 2 shows Figure 1 another perspective view of the filter structure 100 shown in Figure 3 shows Figure 1 , Figure 2 the exploded view of the filter structure 100 shown in

[0097] Specifically, the foregoing filter structure 100 is, for example, an EMC filter, and it can be disposed in a circuit system such as a charging pile, an energy storage device, a computer server, or a power adapter.

[0098] The filter structure 100 of this embodiment mainly includes a substrate B, a first inductive element 11, a second inductive element 12, and a capacitive element C. The aforementioned substrate B is, for example, a printed circuit board. The aforementioned first inductive element 11 and second inductive element 12 serve as common-mode chokes, and the aforementioned first inductive element 11, second inductive element 12, and capacitive element C are all disposed on the substrate B.

[0099] The aforementioned first inductive element 11, second inductive element 12, and capacitive element C are electrically connected to each other through the substrate B and form a filter circuit. The position of the aforementioned capacitive element C is between the first inductive element 11 and the second inductive element 12.

[0100] From Figure 1 , Figure 2 , Figure 3 it can be seen that the aforementioned first inductive element 11 includes an annular first iron core E11, two symmetric first windings W11, and a first magnetic conductive member S11. The aforementioned first winding W11 is wound around the first iron core E11 and is electrically connected to the aforementioned substrate B. The aforementioned first magnetic conductive member S11 has a hollow rectangular structure and surrounds the first iron core E11. A part of the first magnetic conductive member S11 is located between the two first windings W11, and the aforementioned capacitive element C is adjacent to the first magnetic conductive member S11.

[0101] In this embodiment, the aforementioned first iron core E11 has a first through hole E110. The aforementioned first magnetic conductive member S11 is disposed on the first iron core E11, and the first magnetic conductive member S11 shields at least part of the first through hole E110.

[0102] On the other hand, the aforementioned second inductive element 12 includes an annular second iron core E12, two symmetric second windings W12, and a second magnetic conductive member S12. The aforementioned second winding W12 is wound around the second iron core E12 and is electrically connected to the aforementioned substrate B. The aforementioned second magnetic conductive member S12 has a rectangular hollow structure and surrounds the second iron core E12. A part of the second magnetic conductive member S12 is located between the two second windings W12, and the aforementioned capacitive element C is adjacent to the second magnetic conductive member S12.

[0103] In this embodiment, the aforementioned second iron core E12 has a second through hole E120. The aforementioned second magnetic conductive member S12 is disposed on the second iron core E12, and the second magnetic conductive member S12 shields at least part of the second through hole E120.

[0104] It should be specifically noted that the foregoing substrate B is located on the bottom sides of the first and second iron cores E11 and E22, and two elongated first slots B1 and two elongated second slots B2 are formed on the foregoing substrate B. The first magnetic conductive member S11 passes through the foregoing first slot B1, and the second magnetic conductive member S12 passes through the foregoing second slot B2, thereby fixing the first magnetic conductive member S11 and the second magnetic conductive member S12 on the foregoing substrate B. In addition, the foregoing capacitor element C is disposed between the first magnetic conductive member S11 and the second magnetic conductive member S12.

[0105] For example, the foregoing first magnetic conductive member S11 and the second magnetic conductive member S12 are both magnetic conductive plates with high magnetic permeability, and they may include nanocrystalline materials, but are not limited to those disclosed in the embodiments of the present invention.

[0106] In this embodiment, by respectively disposing the first magnetic conductive member S11 and the second magnetic conductive member S12 on the first inductance element 11 and the second inductance element 12, not only can the coupling effect between inductances or between an inductance and a capacitor element be reduced, but also the leakage inductance of the inductance circuit can be significantly increased, so as to reduce the loss of the EMC filter and improve its performance.

[0107] Particularly, in this embodiment, the first inductance element 11, the capacitor element C, and the second inductance element 12 are sequentially disposed along the central axis A1 direction (X-axis direction) of the first and second through holes E110 and E120. The projections of the capacitor element C and the first and second iron cores E11 and E12 in the foregoing central axis A1 direction (X-axis direction) at least partially overlap. In this way, not only can the filtering effect of the filter structure 100 be significantly improved, but also the overall space utilization rate of the filter structure 100 can be effectively increased to achieve the purpose of miniaturizing the mechanism.

[0108] In one embodiment, the top of the foregoing first magnetic conductive member S11 can abut against the first iron core E11, and there is a gap between the first magnetic conductive member S11 and the foregoing two first windings W11 respectively. That is to say, the first magnetic conductive member S11 can contact the first iron core E11, but does not contact the foregoing first winding W11; similarly, the top of the foregoing second magnetic conductive member S12 can abut against the second iron core E12, and there is a gap between the second magnetic conductive member S12 and the foregoing two second windings W12 respectively. That is to say, the second magnetic conductive member S12 can contact the second iron core E12, but does not contact the foregoing second winding W12.

[0109] In one embodiment, the first inductive element 11 and the capacitive element C may also be provided only on the substrate B, and the foregoing second inductive element 12 may be omitted, without being limited to those disclosed in the embodiments of the present invention.

[0110] Next, please refer to Figure 4 , Figure 5 , Figure 6 , wherein Figure 4 shows an exploded view of a filter structure 200 according to another embodiment of the present invention, Figure 5 shows Figure 4 a perspective view of the filter structure 200 shown in Figure 6 shows Figure 5 another perspective view of the filter structure 200 shown in

[0111] As shown in Figure 4 , Figure 5 , Figure 6 , the main difference between the filter structure 200 of this embodiment and the filter structure 100 in Figures 1 to 3 is that: the first magnetic conductor S21 of the first inductive element 21 and the second magnetic conductor S22 of the second inductive element 22 in the filter structure 200 of this embodiment both have a U-shaped structure, wherein the first magnetic conductor S21 forms a first opening S210 facing the Z-axis direction, and the second magnetic conductor S22 forms a second opening S220 facing the Z-axis direction, that is, the first opening S210 and the second opening S220 face the same direction.

[0112] Specifically, the first inductive element 21, the capacitive element C, and the second inductive element 22 in this embodiment are sequentially arranged along the central axis A2 direction of the first and second through holes E210, E220. The annular first iron core E21 is arranged inside the U-shaped first magnetic conductor S21, the annular second iron core E22 is arranged inside the U-shaped second magnetic conductor S22, and the capacitive element C is arranged between the first magnetic conductor S21 and the second magnetic conductor S22; in addition, the first opening S210 of the foregoing first magnetic conductor S21 is located on the top side of the first iron core E21, the second opening S220 of the second magnetic conductor S22 is located on the top side of the second iron core E22, and the foregoing substrate B is located on the bottom side of the first iron core E11 and the second iron core E22; that is, the foregoing first and second openings S210, S220 and the substrate B are located on the opposite sides of the first and second iron cores E21, E22.

[0113] In this embodiment, by respectively providing a first magnetic conductive member S21 and a second magnetic conductive member S22 with a U-shaped structure on the first inductive element 21 and the second inductive element 22, not only can the coupling effect between the first winding W21, the second winding W22 and the capacitive element C be reduced, so as to reduce the loss of the EMC filter and improve its efficiency. In addition, by forming first and second openings S210 and S220 above the first and second magnetic conductive members S21 and S22, the size height of the filter structure 200 in the Z-axis direction can be effectively reduced, so as to greatly save the manufacturing cost and contribute to the miniaturization of the product.

[0114] In one embodiment, it is also possible to only provide the first inductive element 21 and the capacitive element C on the substrate B and omit the aforementioned second inductive element 22, and the present invention is not limited to the embodiments disclosed herein.

[0115] Next, please refer to Figure 7 , in which Figure 7 shows an exploded view of a filter structure 300 according to another embodiment of the present invention. As Figure 7 shown, the main difference between the filter structure 300 of this embodiment and the filter structure 200 in Figures 4 to 6 is that: the first magnetic conductive member S31 of the first inductive element 31 and the second magnetic conductive member S32 of the second inductive element 32 in the filter structure 300 of this embodiment both have an L-shaped structure, and the first magnetic conductive member S31 is formed with a first opening S310 facing the -Z axis direction, and the second magnetic conductive member S32 is formed with a second opening S320 facing the -Z axis direction, that is, the first opening S210 and the second opening S220 face the same direction.

[0116] Specifically, in this embodiment, the first inductive element 31, the capacitive element C and the second inductive element 32 are sequentially arranged along the central axis A3 direction of the first and second through holes E310 and E320. The annular first iron core E31 is arranged in the L-shaped first magnetic conductive member S31, and the annular second iron core E32 is arranged in the L-shaped second magnetic conductive member S32. After assembly, the two ends of the first magnetic conductive member S31 will be embedded in the first slot B1 on the substrate B, and the two ends of the second magnetic conductive member S32 will be embedded in the second slot B2 on the substrate B after assembly.

[0117] In addition, as can be seen from Figure 7 , the first opening S310 of the aforementioned first magnetic conductive member S31 faces the substrate B, the second opening S320 of the second magnetic conductive member S32 also faces the substrate B, and the capacitive element C is located between the first magnetic conductive member S31 and the second magnetic conductive member S32.

[0118] In this embodiment, by respectively providing a first magnetic conduction member S31 and a second magnetic conduction member S32 having a U-shaped structure on the first inductance element 31 and the second inductance element 32, not only can the coupling effect between the first winding W31, the second winding W32 and the capacitance element C be reduced, so as to reduce the loss of the EMC filter and improve its performance. In addition, by forming first and second openings S310 and S320 below the first and second magnetic conduction members S31 and S32, the size height of the filter structure 200 in the Z-axis direction can be effectively reduced, so as to greatly save the manufacturing cost and contribute to the miniaturization of the product.

[0119] In one embodiment, it is also possible to only provide the first inductance element 31 and the capacitance element C on the substrate B and omit the aforementioned second inductance element 32, and it is not limited to what is disclosed in the embodiments of the present invention.

[0120] Refer again to Figure 8 , in which Figure 8 shows a perspective view of a filter structure 400 according to another embodiment of the present invention. As Figure 8 shown, the main difference between the filter structure 400 of this embodiment and the filter structure 300 in Figure 7 is that: the first magnetic conduction member S41 of the first inductance element 41 and the second magnetic conduction member S42 of the second inductance element 42 in the filter structure 400 of this embodiment have a C-shaped structure, and the first magnetic conduction member S41 is formed with a first opening S410 facing the -X axis direction, and the second magnetic conduction member S42 is formed with a second opening S420 facing the X axis direction, that is, the first opening S410 of the first magnetic conduction member S41 and the second opening S420 of the second magnetic conduction member S42 face opposite directions.

[0121] Specifically, the first inductance element 41, the capacitance element C and the second inductance element 42 in this embodiment are sequentially arranged along the central axis A4 direction of the first and second through holes E410 and E420. After assembly, the annular first iron core E41 will be partially accommodated in the U-shaped first magnetic conduction member S41, and a part of the first iron core E41 will protrude from the first opening S410 of the first magnetic conduction member S41 in the -X axis direction; in addition, after assembly, the annular second iron core E42 will be partially accommodated in the U-shaped second magnetic conduction member S32, and a part of the second iron core E42 will protrude from the second opening S420 of the second magnetic conduction member S42 in the X axis direction.

[0122] On the other hand, from Figure 8It can also be seen that the first magnetic conductive member S41 in this embodiment has a first section S411, a second section S412, and a third section S413 that are interconnected. Among them, the aforementioned first section S411 is located between the first iron core E41 and the capacitor element C, and the aforementioned second section S412 is located on the top side of the first iron core E41 and is bent relative to the aforementioned first section S411. In addition, the third section S413 of the aforementioned first magnetic conductive member S41 is disposed on the substrate B and is located on the bottom side of the first iron core E41. The aforementioned second magnetic conductive member S42 has a symmetrical structure with the first magnetic conductive member S41, which will not be elaborated here.

[0123] In this embodiment, the aforementioned capacitor element C is located between the first magnetic conductive member S41 and the second magnetic conductive member S42. The substrate B is only provided with a first slot B1 and a second slot B2. When assembled, the aforementioned first magnetic conductive member S41 will be inserted into the first slot B1 on the substrate B, and the aforementioned second magnetic conductive member S42 will be inserted into the second slot B2 on the substrate B during assembly, so as to fix the first magnetic conductive member S41 and the second magnetic conductive member S42 on the aforementioned substrate B.

[0124] In this embodiment, by respectively providing the first magnetic conductive member S41 and the second magnetic conductive member S42 with a C-shaped structure on the first inductor element 41 and the second inductor element 42, not only can the coupling effect between the first winding W41, the second winding W42, and the capacitor element C be reduced to reduce the loss of the EMC filter and improve its performance, but also by respectively forming a first opening S410 and a second opening S420 on the left side of the first magnetic conductive member S41 and the right side of the second magnetic conductive member S42, the size width of the filter structure 400 in the X-axis direction can be effectively reduced, so as to greatly save the manufacturing cost and contribute to the miniaturization of the product.

[0125] In one embodiment, it is also possible to only provide the first inductor element 41 and the capacitor element C on the substrate B and omit the aforementioned second inductor element 42, and it is not limited to what is disclosed in the embodiments of the present invention.

[0126] Although the embodiments of the present invention and their advantages have been disclosed above, it should be understood that any person with ordinary knowledge in the relevant technical field can make changes, substitutions, and modifications without departing from the spirit and scope of the present invention. In addition, the protection scope of the present invention is not limited to the processes, machines, manufactures, compositions of matter, devices, methods, and steps in the specific embodiments described in the specification. Any person with ordinary knowledge in the relevant technical field can understand the processes, machines, manufactures, compositions of matter, devices, methods, and steps developed currently or in the future from the disclosure of the present invention. As long as they can perform substantially the same functions or achieve substantially the same results in the embodiments described herein, they can be used according to the present invention. Therefore, the protection scope of the present invention includes the above-mentioned processes, machines, manufactures, compositions of matter, devices, methods, and steps. In addition, each claim constitutes an individual embodiment, and the protection scope of the present invention also includes the combination of each claim and embodiment.

[0127] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with this technology can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A filter structure, characterized in that: include: a substrate; a capacitor element disposed on the substrate; as well as A first inductor element is disposed on the substrate, wherein the first inductor element has a first iron core, two first windings and a first magnetic conductive member, wherein the two first windings are wound on the first iron core, and the first magnetic conductive member surrounds the first iron core and is adjacent to the capacitor element.

2. The filter structure according to claim 1, characterized in that The filter structure further includes a second inductor element, which is arranged on the substrate, and the capacitor element is located between the first inductor element and the second inductor element, wherein the second inductor element has a second core, two second windings and a second magnetic conductive member, the two second windings are wound on the second core, and the second magnetic conductive member surrounds the second core and is adjacent to the capacitor element.

3. The filter structure according to claim 1, characterized in that A portion of the first magnetic conductive member is located between the two first windings.

4. The filter structure according to claim 1, characterized in that The substrate is formed with a plurality of first long slots, and the first magnetic conductive member passes through the plurality of first slots.

5. The filter structure according to claim 1, characterized in that The first magnetic conductive component has a hollow rectangular structure.

6. A filter structure, characterized in that: include: a substrate; a capacitor element disposed on the substrate; as well as A first inductor element is disposed on the substrate, wherein the first inductor element has a first core, two first windings and a first magnetic conductive member, wherein the two first windings are wound on the first core, and the first core is located in the first magnetic conductive member, wherein the first magnetic conductive member is adjacent to the capacitor element and forms a first opening.

7. The filter structure according to claim 6, characterized in that The first magnetic conductive component has a U-shaped structure, and the first opening and the substrate are located at opposite sides of the first iron core.

8. The filter structure according to claim 6, characterized in that The first magnetic conductive component has a U-shaped structure, and the first opening faces the substrate.

9. The filter structure according to claim 6, characterized in that The filter structure further includes a second inductor element, which is arranged on the substrate, and the capacitor element is located between the first inductor element and the second inductor element, wherein the second inductor element has a second iron core, two second windings and a second magnetic conductive member, the two second windings are wound on the second iron core, and the second iron core is located in the second magnetic conductive member, wherein the second magnetic conductive member is adjacent to the capacitor element and forms a second opening.

10. The filter structure according to claim 9, characterized in that The first magnetic conductive component and the second magnetic conductive component both have a C-shaped structure, and the first opening and the second opening face opposite directions.

11. A filter structure, characterized in that: include: a substrate; a capacitor element disposed on the substrate; as well as A first inductor element is disposed on the substrate and adjacent to the capacitor element, and the first inductor element has a first annular core, two first windings and a first magnetic conductive member, wherein the first core has a first through hole, the two first windings are wound around the first core, the first magnetic conductive member is disposed on the first core, and the first magnetic conductive member shields at least a portion of the first through hole.

12. The filter structure according to claim 11, characterized in that A projection of the capacitor element along a central axis direction of the first through hole overlaps with the first iron core.

13. The filter structure according to claim 11, characterized in that The first magnetic conductive component abuts against the first iron core, and a gap is respectively formed between the first iron core and the two first windings.

14. The filter structure according to claim 11, characterized in that The first magnetic conductive component has a first section, and the first section is located between the first iron core and the capacitor element.

15. The filter structure according to claim 14, characterized in that The first magnetic conductive component further has a second section portion, which is connected to the first section portion and bent relative to the first section portion.

16. The filter structure according to claim 15, characterized in that The first magnetic conductive component further has a third section, the first section connects the third section and the second section, and the third section is arranged on the substrate.

17. The filter structure according to claim 11, characterized in that The filter structure further includes a second inductor element, which is arranged on the substrate and has a ring-shaped second core, two second windings and a second magnetic conductive member, wherein the second core has a second through hole, the two second windings are wound around the second core, the second magnetic conductive member is arranged on the second core, and the second magnetic conductive member shields at least part of the second through hole.

18. The filter structure according to claim 17, characterized in that The first inductor element, the capacitor element and the second inductor element are sequentially arranged along a central axis direction of the first through hole.

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