CN221040743U - Inductor and electrical device - Google Patents
Inductor and electrical device Download PDFInfo
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- CN221040743U CN221040743U CN202322705087.XU CN202322705087U CN221040743U CN 221040743 U CN221040743 U CN 221040743U CN 202322705087 U CN202322705087 U CN 202322705087U CN 221040743 U CN221040743 U CN 221040743U
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- inductor
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- 238000004804 winding Methods 0.000 claims description 20
- 238000009434 installation Methods 0.000 abstract description 7
- 230000005389 magnetism Effects 0.000 abstract description 4
- 230000004308 accommodation Effects 0.000 abstract description 3
- 210000002421 cell wall Anatomy 0.000 abstract description 3
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 description 16
- 239000011162 core material Substances 0.000 description 11
- 239000006247 magnetic powder Substances 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 4
- 229910017082 Fe-Si Inorganic materials 0.000 description 3
- 229910017133 Fe—Si Inorganic materials 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 description 2
- 229910018605 Ni—Zn Inorganic materials 0.000 description 2
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910000702 sendust Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910002796 Si–Al Inorganic materials 0.000 description 1
- KSIIOJIEFUOLDP-UHFFFAOYSA-N [Si].[Fe].[Ni] Chemical compound [Si].[Fe].[Ni] KSIIOJIEFUOLDP-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The embodiment of the utility model discloses an inductor and electrical equipment, wherein the inductor is arranged on a circuit board and is used for generating inductance, the inductor comprises a magnetic shell, a coil, a magnetic part and a plurality of pad bodies, the magnetic shell is provided with a containing groove and an opening communicated with the containing groove, the coil is wound on the magnetic part, the coil and each pad body are arranged in a containing space formed by the surrounding of the groove wall of the containing groove and the circuit board, and each pad body is arranged between the magnetic part and the groove wall of the containing groove, so that the installation precision of the magnetic part is higher, and the inductance precision is improved. Through setting up the magnetic shell, magnetism spare, coil and each pad body are all installed in the cell wall of holding groove and the accommodation space that the circuit board encloses and forms for magnetism spare and coil can be insulating, thereby have improved high voltage resistant performance.
Description
Technical Field
The utility model relates to the technical field of electric technology, in particular to an inductor and electric equipment.
Background
At present, applications such as a photovoltaic inverter, a charging pile, an on-board charger (OBC), an electric drive and the like are all plagued by various factors such as high voltage, large current, small-size installation and the like, the traditional DC inductor is small in size and suitable for high-density installation, but the structure of the DC inductor is usually designed for a high-voltage circuit and cannot be applied to high-voltage occasions, so that high-voltage resistance is poor.
Disclosure of utility model
Based on this, it is necessary to provide an inductor and an electrical device, which are aimed at solving the technical problems that the application of photovoltaic inverter, charging pile, vehicle-mounted charger (OBC), electric drive and the like is faced with various factors such as high voltage, large current, small-size installation and the like, the traditional DC inductor is small in size and suitable for high-density installation, but the structure of the DC inductor is usually designed as a high-voltage circuit and cannot be applied to high-voltage occasions, so that the high-voltage resistance performance is poor.
In a first aspect, the present utility model provides an inductor, where the inductor is mounted on a circuit board and is used for generating an inductance, the inductor includes a magnetic shell, a coil, a magnetic member, and a plurality of pads, the magnetic shell has a receiving slot, and an opening communicating with the receiving slot, the coil is wound around the magnetic member, the coil, and the pads are all mounted in a receiving space formed by enclosing a slot wall of the receiving slot and the circuit board, and each pad is disposed between the magnetic member and a slot wall of the receiving slot.
In one embodiment, the magnetic shell is an insulating structural member.
In one embodiment, the surface of the magnetic member has an insulating layer.
In one embodiment, the magnetic element is strip-shaped, the coil comprises a winding part and two pin parts connected with the winding part, and the winding part is elliptical; and/or
The magnetic piece is strip-shaped, the coil comprises a winding part and two pin parts connected with the winding part, and the winding part is rectangular.
In one embodiment, the magnetic shell includes a bottom wall, a first side wall, a second side wall, a third side wall and a fourth side wall, where the bottom wall, the first side wall, the second side wall, the third side wall and the fourth side wall enclose to form the accommodating groove, and the first side wall and the third side wall are respectively provided with a wire outlet groove, and each wire outlet groove is used for leading out each lead part.
In one embodiment, the inductor further includes two terminals, each of the terminals includes a clamping portion, and a connecting portion connected to the clamping portion, the second side wall and the fourth side wall are each provided with a mounting groove, each of the clamping portions is clamped to a groove wall of each of the mounting grooves, and each of the connecting portions is connected to each of the lead portions.
In one embodiment, each of the connection portions is provided with a through hole, and each of the pin portions penetrates through each of the through holes and is connected with a wall of each of the through holes.
In one embodiment, each of the terminals further includes a bending portion, and each of the engaging portions is connected to each of the connecting portions through each of the bending portions, so that each of the connecting portions can connect each of the lead portions.
In one embodiment, the magnetic member is provided with a positioning protrusion, and the pad body is provided with a positioning hole, and the positioning protrusion is matched with the hole wall of the positioning hole and is used for positioning the pad body.
In a second aspect, the utility model also provides an electrical device comprising an inductor according to any of the embodiments described above.
The implementation of the embodiment of the utility model has the following beneficial effects:
The inductor and the electrical equipment are arranged on the circuit board and used for generating the inductance, the magnetic shell is provided with the accommodating groove and the opening communicated with the accommodating groove, the coil is wound with the magnetic piece, the coil and the pad bodies are all arranged in the accommodating space formed by the groove wall of the accommodating groove and the circuit board, and the pad bodies are all arranged between the magnetic piece and the groove wall of the accommodating groove, so that the installation precision of the magnetic piece is higher, and the inductance precision is improved. Through setting up the magnetic shell, magnetism spare, coil and each pad body are all installed in the cell wall of holding groove and the accommodation space that the circuit board encloses and forms for magnetism spare and coil can be insulating, thereby have improved high voltage resistant performance.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Wherein:
Fig. 1 is a schematic diagram of an inductor axis in one embodiment.
Fig. 2 is an exploded view of the inductor shown in fig. 1.
Fig. 3 is a schematic diagram of the magnetic element, coil, terminal and pad in the inductor of fig. 2.
Fig. 4 is an enlarged partial schematic view of a portion a of the inductor shown in fig. 3.
Fig. 5 is a schematic diagram of a terminal in the inductor shown in fig. 1.
Fig. 6 is another angular schematic diagram of the inductor shown in fig. 1.
Reference numerals:
1. A magnetic shell; 11. a receiving groove; 12. an opening; 13. a bottom wall; 14. a first sidewall; 15. a second sidewall; 16. a third sidewall; 17. a fourth sidewall;
2. A coil; 21. a winding part; 22. a lead portion;
3. A magnetic member; 31. positioning the bulge; 4. a cushion body; 41. positioning holes; 5. a terminal; 51. an engagement portion; 52. a connection part; 521. a through hole; 53. a bending part; 100. a wire outlet slot; 200. and a mounting groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.
In the prior art, the heavy current inductor is formed by combining manganese-zinc, an iron powder core, alloy powder or magnetic powder core materials and enameled wires, and the magnetic core is in direct contact with a coil, so that the risk of breakdown is caused under the condition of high-voltage application.
The integrated inductor can realize high power, but the coating insulating property of the magnetic powder can not bear the high-voltage condition (below 100V), and the integrated inductor usually adopts a die casting molding process, so that a paint film is easy to damage, and magnetic powder and copper wires are conducted under the high-voltage application environment.
The magnetic ring inductor is adopted as a large-current inductor, and although high voltage resistance can be realized, the space waste can be caused due to the fact that the utilization rate of a winding window of the magnetic ring inductor is not high (window utilization rate is 40%), meanwhile, the size is relatively huge, and the design requirement of small size and high power density at present is not met. In addition, the magnetic ring inductor can also bring EMC (electromagnetic compatibility) interference due to the fact that the coil is exposed.
The chip power inductor is designed by adopting nickel-zinc ferrite, and has high withstand voltage, but the saturation magnetic induction intensity of the nickel-zinc ferrite core is relatively low (0.4T@25deg.C/0.3T@100deg.C), so that magnetic saturation is easy to occur under the high-voltage and high-current application condition, and the inductor function is disabled. And therefore can be applied only to some occasions with low power.
Referring to fig. 1 to 6 together, an inductor provided by the present utility model will be described, and the inductor is used in an electrical device. The inductor is mounted on a circuit board of the high voltage DC/DC converter and is used to generate an inductance. The inductor comprises a magnetic shell 1, a coil 2, a magnetic part 3 and a plurality of pad bodies 4, wherein the magnetic shell 1 is provided with a containing groove 11 and an opening 12 communicated with the containing groove 11, the coil 2 is wound on the magnetic part 3, the coil 2 and the pad bodies 4 are all arranged in a containing space formed by enclosing the groove wall of the containing groove 11 and a circuit board, and the pad bodies 4 are all arranged between the magnetic part 3 and the groove wall of the containing groove 11.
It can be understood that the inductor is mounted on a circuit board and is used for generating inductance, the magnetic shell 1 is provided with a containing groove 11 and an opening 12 communicated with the containing groove 11, the coil 2 is wound on the magnetic piece 3, the coil 2 and each pad 4 are all mounted in a containing space formed by enclosing the groove wall of the containing groove 11 with the circuit board, and each pad 4 is arranged between the magnetic piece 3 and the groove wall of the containing groove 11, so that the mounting precision of the magnetic piece 3 is higher, and the inductance precision is improved. Through setting up magnetic shell 1, magnetic part 3, coil 2 and each pad body 4 all install in the cell wall of holding groove 11 and the accommodation space that the circuit board encloses and forms for magnetic part 3 and coil 2 can be insulating, thereby have improved high voltage resistant performance.
In this embodiment, the magnetic shell 1 is an insulating structural member. Specifically, the magnetic shell 1 is an insulating structural member, and the pressure resistance (1200V) of the product can be effectively improved.
Further, the surface of the magnetic member 3 has an insulating layer. Specifically, the surface of the magnetic member 3 has an insulating layer, so that the insulating performance of the inductor can be increased, thereby realizing high withstand voltage.
Specifically, the magnetic member 3 is made of nickel-zinc ferrite or manganese-zinc ferrite or magnetic powder core material: such as sendust, and the like. The magnetic shell 1 is nickel-zinc ferrite.
The magnetic member 3 and the magnetic housing 1 have various combinations.
In a first embodiment, the magnetic member 3 is nickel-zinc ferrite. The magnetic shell 1 is nickel-zinc ferrite.
Since the nickel-zinc ferrite is an insulator, the magnetic member 3 does not need to be subjected to additional insulation treatment, and the surface impedance of the nickel-zinc ferrite is high, so that the nickel-zinc ferrite is applied to high-frequency high-voltage high-current.
In a second embodiment, the magnetic member 3 is a manganese-zinc ferrite. The magnetic shell 1 is nickel-zinc ferrite.
Because the magnetic part 3 of the Mn-Zn ferrite has high magnetic conductivity (up to 3300), the saturation induction intensity is higher than that of Ni-Zn ferrite (Mn-Zn ferrite: 0.5T and Ni-Zn ferrite: 0.3T), thus the inductor with high inductance value, low loss and high voltage resistance can be designed.
In a third embodiment, the magnetic member 3 is ferro-silicon and the magnetic shell 1 is nickel-zinc ferrite.
The high-voltage high-saturation current design has the advantages that the magnetic core loss is larger than that of ferrite, the saturation current is far higher than that of ferrite design, the high-voltage high-saturation current design has performance advantages under the condition that the magnetic core loss is small when the low-frequency application is performed, and the high-voltage high-power energy storage inductor is suitable for being applied to the high-voltage high-power energy storage inductor with the frequency below 100K.
In the fourth embodiment, the magnetic member 3 is sendust, and the magnetic shell 1 is nickel-zinc ferrite.
Because the saturation induction intensity of Fe-Si-Al is larger than that of Mn-Zn ferrite and smaller than that of Fe-Si, the magnetic core loss is lower than that of Fe-Si, so the design is suitable for being applied to high-voltage, medium-and small-power energy storage application, and the application frequency of the high-power inductor can be improved because the loss is smaller than that of Fe-Si.
In a fifth embodiment, the magnetic member 3 is iron-nickel and the magnetic shell 1 is nickel-zinc ferrite.
High voltage, high saturation current, low loss design, stable performance, and suitability for high-end high-power application.
The saturation induction intensity of the iron-nickel magnetic powder core is highest in the magnetic powder cores, and the magnetic core loss is lowest in the magnetic powder cores, so that the design collocation can realize both high saturation and low loss, and is suitable for high-end high-power application with extremely high requirements on performance and reliability.
In a sixth embodiment, the magnetic member 3 is iron silicon nickel and the magnetic shell 1 is nickel-zinc ferrite.
The design of high voltage and high saturation current, the saturation current is smaller than that of the iron-nickel magnetic piece 3 and the nickel-zinc ferrite magnetic shell 1, and the loss is slightly larger than that of the iron-nickel magnetic piece 3 and the nickel-zinc ferrite magnetic shell.
It should be added that, because the magnetic component 3, the coil 2 and the pad bodies 4 are all installed in the accommodating space formed by the enclosing of the groove wall of the accommodating groove 11 and the circuit board, the inductor can effectively shield electromagnetic interference.
In one embodiment, as shown in fig. 2 and 3, the magnetic member 3 is in a strip shape, the coil 2 includes a winding portion 21, and two lead portions 22 connected to the winding portion 21, and the winding portion 21 is in an elliptical shape. By providing the strip-shaped magnetic member 3, the coil 2 can be flattened even more during the process of winding the magnetic member 3, that is, the winding portion 21 is elliptical or rectangular, thereby reducing the height of the product.
It is to be added that the coil 2 is flat in the process of winding the magnetic piece 3, so that the product height can be further reduced, and meanwhile, the effective sectional area of the coil 2 can be increased, and the characteristics of low resistance and high current are realized.
In an embodiment, as shown in fig. 2 and 6, the magnetic shell 1 includes a bottom wall 13, a first side wall 14, a second side wall 15, a third side wall 16 and a fourth side wall 17, where the bottom wall 13, the first side wall 14, the second side wall 15, the third side wall 16 and the fourth side wall 17 enclose to form a containing groove 11, and the first side wall 14 and the third side wall 16 are respectively provided with a wire outlet slot 100, and each wire outlet slot 100 is used for leading out each pin portion 22. By providing the wire outlet groove 100, the pin portion 22 can be led out in the wire outlet groove 100, so that the space occupied by the pin portion 22 can be saved, and the height of the product can be reduced.
In this embodiment, the inductor further includes two terminals 5, each terminal 5 includes an engaging portion 51, and a connecting portion 52 connected to the engaging portion 51, each of the second side wall 15 and the fourth side wall 17 is provided with a mounting groove 200, each engaging portion 51 is engaged with a groove wall of each mounting groove 200, and each connecting portion 52 is connected to each pin portion 22. By providing the mounting groove 200, the engaging portion 51 can be mounted in the mounting groove 200, and the space occupied by the mounting of the engaging portion 51 can be reduced, thereby reducing the height of the product. The terminal 5 is a metal terminal, and the metal terminal is connected to the lead portion 22 and serves as an electrode of the inductor.
Further, each connecting portion 52 is provided with a through hole 521, and each lead portion 22 penetrates through each through hole 521 and is connected to the wall of each through hole 521. By providing the through hole 521, the connection of the lead part 22 with the connection part 52 is made more stable.
Further, each terminal 5 further includes a bent portion 53, and each engaging portion 51 is connected to each connecting portion 52 by each bent portion 53 so that each connecting portion 52 can be connected to each pin portion 22. Since the lead portion 22 is led out from the first side wall 14 and the third side wall 16, and the engaging portion 51 is attached to the second side wall 15 and the fourth side wall 17, the bent portion 53 is provided so that the connection portion 52 can be connected to the lead portion 22.
In one embodiment, as shown in fig. 3 and 4, the magnetic member 3 is provided with a positioning protrusion 31, the pad 4 is provided with a positioning hole 41, and the positioning protrusion 31 is matched with the wall of the positioning hole 41 and is used for positioning the pad 4. By providing the positioning projection 31 and the positioning hole 41, the position of the cushion body 4 can be positioned, and thus the installation position of the magnetic member 3 in the magnetic shell 1 can be positioned, so as to improve the inductance accuracy.
The utility model also provides an electrical device comprising the inductor of any of the embodiments described above.
It can be understood that the electrical apparatus of the present embodiment uses the above-mentioned inductor, so that by providing the magnetic shell 1, the magnetic member 3, the coil 2 and each pad 4 are all installed in the accommodating space formed by enclosing the slot wall of the accommodating slot 11 with the circuit board, so that the magnetic member 3 and the coil 2 can be insulated, thereby improving the voltage resistance.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.
Claims (10)
1. The inductor is mounted on a circuit board and used for generating inductance, and is characterized by comprising a magnetic shell, a coil, a magnetic piece and a plurality of pad bodies, wherein the magnetic shell is provided with a containing groove and an opening communicated with the containing groove, the coil is wound on the magnetic piece, the coil and the pad bodies are all mounted in a containing space formed by enclosing the groove wall of the containing groove and the circuit board, and each pad body is arranged between the magnetic piece and the groove wall of the containing groove.
2. The inductor of claim 1, wherein the magnetic shell is an insulating structural member.
3. The inductor of claim 2, wherein a surface of the magnetic member has an insulating layer.
4. The inductor of claim 1, wherein the magnetic member is in a strip shape, the coil includes a winding portion, and two lead portions connecting the winding portion, the winding portion is in an elliptical shape; and/or
The magnetic piece is strip-shaped, the coil comprises a winding part and two pin parts connected with the winding part, and the winding part is rectangular.
5. The inductor of claim 4, wherein the magnetic housing comprises a bottom wall, a first side wall, a second side wall, a third side wall, and a fourth side wall, the bottom wall, the first side wall, the second side wall, the third side wall, and the fourth side wall enclose to form the accommodating groove, the first side wall and the third side wall are each provided with a wire outlet groove, and each wire outlet groove is used for leading out each lead portion.
6. The inductor of claim 5, further comprising two terminals, each of the terminals including an engagement portion, and a connection portion connecting the engagement portions, each of the second and fourth side walls being provided with a mounting groove, each of the engagement portions being engaged with a groove wall of each of the mounting grooves, each of the connection portions connecting each of the lead portions.
7. The inductor as claimed in claim 6, wherein each of the connection portions is provided with a through hole, and each of the pin portions penetrates through each of the through holes and is connected to a wall of each of the through holes.
8. The inductor of claim 7, wherein each of the terminals further includes a bent portion, each of the engagement portions being connected to each of the connection portions by each of the bent portions, so that each of the connection portions can connect each of the lead portions.
9. The inductor as claimed in claim 1, wherein the magnetic member is provided with a positioning protrusion, the pad is provided with a positioning hole, and the positioning protrusion is matched with a hole wall of the positioning hole and is used for positioning the pad.
10. An electrical device comprising an inductor according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322705087.XU CN221040743U (en) | 2023-10-07 | 2023-10-07 | Inductor and electrical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322705087.XU CN221040743U (en) | 2023-10-07 | 2023-10-07 | Inductor and electrical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221040743U true CN221040743U (en) | 2024-05-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322705087.XU Active CN221040743U (en) | 2023-10-07 | 2023-10-07 | Inductor and electrical device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221040743U (en) |
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2023
- 2023-10-07 CN CN202322705087.XU patent/CN221040743U/en active Active
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