An inductive element integrated with a filter function and an inverter

Abstract

The utility model relates to inverter technical field, especially a kind of inductance component and inverter of integrated filter function is involved.The inductance component of integrated filter function, including insulating base plate, filter magnetic ring and inverter inductance, filter magnetic ring is insulated and arranged in insulating base plate;Inverter inductance is insulated and arranged in insulating base plate, inverter inductance and filter magnetic ring are located the same side of insulating base plate, inverter inductance has current output end, and current output end sequentially passes the inner ring of filter magnetic ring and insulating base plate.In the utility model, inverter inductance and filter magnetic ring with filter function are integrated on insulating base plate, realize two-in-one, reduce the space occupied, beneficial to inverter miniaturization.The current output end of inverter inductance passes the inner ring of filter magnetic ring, both can meet the control of current change in inverting process, and high-frequency ripple in output current can be effectively filtered out.

Description

Technical Field

[0001] This utility model relates to the field of inverter technology, and in particular to an inductor with integrated filtering function and an inverter. Background Technology

[0002] With the development of new energy vehicles, charging infrastructure will continue to grow rapidly. Inductors, as crucial components of charging piles, will see an increasing demand. These inductors include filter inductors and general-purpose inductors. Currently, two independent filter inductors and general-purpose inductors are typically fixed separately within the inverter, but this installation method hinders the miniaturization of inverters. Utility Model Content

[0003] The main purpose of this invention is to provide an inductor with integrated filtering function, which aims to reduce the space occupied by the inductor and facilitate the miniaturization of inverters.

[0004] To achieve the above objectives, the first aspect of this utility model discloses an inductor with integrated filtering function, comprising: an insulating base plate, a filter magnetic ring, and an inverter inductor, wherein the filter magnetic ring is insulatedly disposed on the insulating base plate; the inverter inductor is insulatedly disposed on the insulating base plate, the inverter inductor and the filter magnetic ring are located on the same side of the insulating base plate, the inverter inductor has a current output terminal, and the current output terminal passes sequentially through the inner ring of the filter magnetic ring and the insulating base plate.

[0005] Optionally, the inverter inductor is laid flat and spaced apart on the insulating base plate, the filter magnetic ring is located between the inverter inductor and the insulating base plate, and the inverter inductor overlaps at least partially with the filter magnetic ring in the height direction.

[0006] Optionally, the insulating base plate is provided with an insulating frame and an insulating cover; the insulating frame includes an outer wall and an inner boss, the inner boss is disposed in the middle of the outer wall to form an upward-facing annular groove; the inner boss is provided with a first through groove for the current output terminal to pass through; the insulating cover is detachably connected to the top of the insulating frame; the insulating base plate is provided with a first clearance through hole, and the insulating cover is provided with a second clearance through hole, both the first clearance through hole and the second clearance through hole corresponding to the first through groove.

[0007] Optionally, the insulating frame is provided with a conductive copper busbar, the outer wall is provided with an outwardly expanding bend, the inner boss is provided with a second through groove, and the insulating base plate is provided with a third clearance through hole and a fourth clearance through hole. The third clearance through hole is located between the filter magnetic ring and the outwardly expanding bend, and the fourth clearance through hole corresponds to the second through groove. One end of the conductive copper busbar passes through the third clearance through hole and exits the insulating base plate, and the other end of the conductive copper busbar passes through the second through groove and the fourth clearance through hole and exits the insulating base plate.

[0008] Optionally, the inverter inductor includes an upper yoke, an insulating partition, a middle column, a coil, and a lower yoke. The axial direction of the middle column is parallel to the surface of the insulating base plate. The upper yoke, the lower yoke, and the middle column form a magnetic circuit. The coil is sleeved on the middle column. The two ends of the coil are separated from the upper yoke and the lower yoke by the insulating partition, respectively.

[0009] Optionally, the number of coils is two, and two first through slots are provided accordingly. The two first through slots are spaced apart, and the second through slot is provided between the two first through slots. The two first through slots and the second through slot are arranged in a straight line on the inner boss.

[0010] Optionally, the insulating base plate is provided with a support structure, the support structure including a protrusion and a plurality of support platforms, the protrusion being disposed on the top surface of the insulating cover and abutting against the lower yoke; the support platforms being disposed in the area outside the insulating frame and abutting against the corresponding upper or lower yoke.

[0011] Optionally, the insulating base plate is provided with a fifth clearance through hole, through which the current input terminal of the inverter inductor passes out of the insulating base plate.

[0012] Optionally, the insulating base plate has several feet on the side away from the inverter inductor.

[0013] The second aspect of this utility model discloses an inverter that includes an inductor with integrated filtering function as disclosed in the first aspect of this utility model.

[0014] The technical solution provided by this utility model can include the following beneficial effects:

[0015] The inductor with integrated filtering function provided in this utility model integrates the inverter inductor and the filter magnetic ring with filtering function on an insulating base plate, achieving a two-in-one design, reducing space occupation, and facilitating inverter miniaturization. The current output terminal of the inverter inductor passes through the inner ring of the filter magnetic ring, which can not only meet the control of current changes during the inverter process, but also effectively filter out high-frequency ripple in the output current. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the inductor element of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the current output terminal passing through the filter magnetic ring of this utility model;

[0019] Figure 3 This is an exploded view of the insulating base plate of this utility model;

[0020] Figure 4 This is a schematic diagram of the insulating frame of this utility model;

[0021] Figure 5 This is a top view of the insulating base plate of this utility model;

[0022] Figure 6 This is a schematic diagram of the support structure of this utility model;

[0023] Figure 7 This is an exploded view of the structure of the inverter inductor of this utility model;

[0024] In the attached diagram: 100-Insulating base plate, 110-Insulating frame, 111-Outer wall, 112-Inner boss, 113-Annular groove, 114-First through groove, 115-Outward folded protrusion, 116-Second through groove, 117-First clearance through hole, 120-Insulating cover, 121-Second clearance through hole, 130-Conductive copper busbar, 140-Third clearance through hole, 150-Fourth clearance through hole, 160-Support structure, 161-Protrusion, 162-Support platform, 170-Fifth clearance through hole, 180-Feet, 200-Filter magnetic ring, 300-Inverter inductor, 310-Current output terminal, 320-Current input terminal, 330-Upper yoke, 340-Insulating partition, 350-Center column, 360-Coil, 370-Lower yoke. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] The following is combined Figures 1 to 7This invention describes an inductor element with integrated filtering function disclosed in the first aspect of the present invention, comprising an insulating base plate 100, a filter magnetic ring 200, and an inverter inductor 300; the filter magnetic ring 200 is insulatedly disposed on the insulating base plate 100; the inverter inductor 300 is insulatedly disposed on the insulating base plate 100, the inverter inductor 300 and the filter magnetic ring 200 are located on the same side of the insulating base plate 100, the inverter inductor 300 has a current output terminal 310, the current output terminal 310 passes sequentially through the inner ring of the filter magnetic ring 200 and the insulating base plate 100.

[0030] In a specific embodiment, the insulating base plate 100 is used to connect to the PCB board. The filter magnetic ring 200 and the inverter inductor 300 are jointly disposed on one side of the insulating base plate 100. The current output terminal 310 of the inverter inductor 300 passes through the filter magnetic ring 200 and the insulating base plate 100 and then connects to the PCB board. The filter magnetic ring 200 is made of nanocrystals with high saturation magnetic induction and low coercivity. The current output terminal 310 and the current input terminal 320 of the inverter inductor 300 are the end sections of the coil 360, used to connect to the circuitry of the PCB board.

[0031] The inductor with integrated filtering function provided in this utility model integrates the inverter inductor 300 and the filter magnetic ring 200 with filtering function on the insulating base plate 100, realizing a two-in-one design, reducing the space occupied, and facilitating the miniaturization of the inverter. The current output terminal 310 of the inverter inductor 300 passes through the inner ring of the filter magnetic ring 200, which can not only meet the control of current changes during the inverter process, but also effectively filter out high-frequency ripples in the output current.

[0032] As a preferred embodiment, such as Figure 1 and Figure 3 As shown, the inverter inductor 300 is laid flat and spaced apart on the insulating base plate 100, and the filter magnetic ring 200 is located between the inverter inductor 300 and the insulating base plate 100. The inverter inductor 300 overlaps with the filter magnetic ring 200 in the height direction at least partially.

[0033] By placing the filter magnetic ring 200 between the inverter inductor 300 and the insulating base plate 100, the filter magnetic ring 200 and the inverter inductor 300 can partially overlap in the height direction, which can further reduce the space occupied by the inductor components.

[0034] Optionally, such as Figure 3 , Figure 4 and Figure 5 As shown, the insulating base plate 100 is provided with an insulating frame 110 and an insulating cover 120;

[0035] The insulating frame 110 includes an outer wall 111 and an inner boss 112. The inner boss 112 is disposed in the middle of the outer wall 111 to form an annular groove 113 with the opening facing upward. The inner boss is provided with a first through groove 114 for the current output terminal 310 to pass through.

[0036] The insulating cover 120 is detachably connected to the top of the insulating frame 110; the insulating base plate 100 has a first clearance through hole 117, and the insulating cover 120 has a second clearance through hole 121, both the first clearance through hole 117 and the second clearance through hole 121 corresponding to the first through groove 114.

[0037] Specifically, the filter magnetic ring 200 is disposed in the annular groove 113, and is limited by the outer wall 111 and the inner boss 112, so that the filter magnetic ring 200 is placed flat on the insulating base plate 100. Compared with the filter magnetic ring 200 being placed vertically, this embodiment uses the filter magnetic ring 200 to be placed flat on the insulating base plate 100, which can further reduce the space occupied.

[0038] In this embodiment, the annular groove 113 is covered by an insulating cover 120 to seal the filter magnetic ring 200, thereby preventing the filter magnetic ring 200 from loosening and falling off. In this embodiment, the current output terminal 310 passes through the second clearance through hole 121, the first through groove 114 and the first clearance through hole 117 in sequence before passing to the other side of the insulating base plate 100.

[0039] As an optional embodiment, the insulating frame 110 has a conductive copper busbar 130 inside, the outer wall 111 has an outwardly expanding bent portion, the inner boss 112 has a second through groove 116, and the insulating base plate 100 has a third clearance through hole 140 and a fourth clearance through hole 150. The third clearance through hole 140 is located between the filter magnetic ring 200 and the outwardly expanding bent portion, and the fourth clearance through hole 150 corresponds to the second through groove 116. One end of the conductive copper busbar 130 passes through the third clearance through hole 140 and exits the insulating base plate 100, and the other end of the conductive copper busbar 130 passes through the second through groove 116 and the fourth clearance through hole 150 and exits the insulating base plate 100. In this embodiment, as... Figure 3 , Figure 4 and Figure 5 As shown, the conductive copper busbar 130 is U-shaped. One end of the conductive copper busbar 130 extends out of the insulating base plate 100 through the third clearance through hole 140; the other end of the conductive copper busbar 130 extends out of the insulating base plate 100 through the second through slot 116 and the fourth clearance through hole 150, so that one end of the conductive copper busbar 130 extends out through the inner ring of the filter magnetic ring 200. The two ends of the conductive copper busbar 130 are used to connect to the circuits on the PCB board, so that when other circuits on the PCB board are connected to the conductive copper busbar 130, the high-frequency ripple in the output current is filtered out by the filter magnetic ring 200.

[0040] Specifically, the inverter inductor 300 includes an upper yoke 330, an insulating partition 340, a central post 350, a coil 360, and a lower yoke 370. The axial direction of the central post 350 is parallel to the surface of the insulating base plate 100. The upper yoke 330, the lower yoke 370, and the central post 350 form a magnetic circuit. The coil 360 is sleeved on the central post 350. The two ends of the coil 360 are separated from the upper yoke 330 and the lower yoke 370 by the insulating partition 340, respectively. For example, as shown... Figure 7 As shown, the number of intermediate columns 350, coils 360, and insulating partitions 340 is two. Preferably, the upper yoke 330, intermediate columns 350, and lower yoke 370 of the inverter inductor 300 use low-loss, high-frequency, and stable magnetic powder cores. The coil 360 is a flat coil 360 for easy assembly. The two intermediate columns 350 are arranged side by side, and the upper yoke 330 and lower yoke 370 are connected to the two ends of the intermediate columns 350 respectively, forming a magnetic circuit. The two coils 360 are fitted onto the intermediate columns 350 one-to-one, and the insulating partitions 340 are fitted onto the intermediate columns 350, separating the coils 360 from the corresponding upper yokes 330 and lower yokes 370.

[0041] Optionally, the coil 360 is provided in two configurations, with two corresponding first through slots 114 spaced apart. A second through slot 116 is positioned between the two first through slots 114, and the two first through slots 114 and the second through slot 116 are arranged in a straight line on the inner boss 112. Specifically, as shown... Figure 3 and Figure 4 As shown, the filter magnetic ring 200 is a racetrack-shaped ring, therefore the inner boss 112 is strip-shaped. The second through slot 116 is set between the two first through slots 114, which can make reasonable use of the interval between the current output terminals 310 of the two coils 360.

[0042] More specifically, the insulating base plate 100 is provided with a support structure 160, the support structure 160 includes a protrusion 161 and a plurality of support platforms 162, the protrusion 161 is disposed on the top surface of the insulating cover 120, the protrusion 161 abuts against the lower yoke 370; the support platforms 162 are disposed in the area outside the insulating frame 110, the support platforms 162 abut against the corresponding upper yoke 330 or lower yoke 370.

[0043] For example, such as Figure 4 and Figure 6As shown, three support platforms 162 are provided, located at the three corners of the insulating base plate 100. The insulating frame 110 is located at the corners of the insulating base plate 100 where the support platforms 162 are not located. One support platform 162 and the protrusion 161 work together to support the lower yoke 370. The other two support platforms 162 work together to support the lower yoke 370. This arrangement allows the inverter inductor 300 to be spaced apart from the insulating base plate 100, enabling the filter magnetic ring 200 to be positioned between the inverter inductor 300 and the insulating base plate 100.

[0044] Optionally, the insulating base plate 100 is provided with a fifth clearance through hole 170, through which the current input terminal 320 of the inverter inductor 300 passes through the fifth clearance through hole 170 and exits the insulating base plate 100. In this way, the current output terminal 310 of the inverter inductor 300 passes through the insulating base plate 100 and is connected to the PCB board.

[0045] Optionally, the insulating base plate 100 has a plurality of feet 180 on the side away from the inverter inductor 300. This allows the insulating base plate 100 to be spaced apart and mounted on the PCB board. For example, as shown... Figure 6 As shown, the insulating base plate 100 is provided with four support legs 180.

[0046] The second aspect of this utility model also discloses an inverter, including an inductor with integrated filtering function according to any embodiment of the first aspect of this utility model. In the inverter provided by this utility model, the inverter inductor 300 and the filter magnetic ring 200 with filtering function are integrated on the insulating base plate 100, achieving a two-in-one design, reducing space occupation, and facilitating inverter miniaturization. The current output terminal 310 of the inverter inductor 300 passes through the inner ring of the filter magnetic ring 200, which can both meet the control of current changes during the inverter process and effectively filter out high-frequency ripple in the output current.

[0047] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. An inductor with integrated filtering function, characterized in that: include: Insulating base plate; A filter magnetic ring, wherein the filter magnetic ring is insulated and disposed on the insulating base plate; An inverter inductor is insulated on the insulating base plate. The inverter inductor and the filter magnetic ring are located on the same side of the insulating base plate. The inverter inductor has a current output terminal, which passes through the inner ring of the filter magnetic ring and the insulating base plate in sequence.

2. An inductor with integrated filtering function according to claim 1, characterized in that: The inverter inductor is laid flat and spaced apart on the insulating base plate, and the filter magnetic ring is located between the inverter inductor and the insulating base plate. The inverter inductor and the filter magnetic ring overlap at least partially in the height direction.

3. An inductor with integrated filtering function according to claim 2, characterized in that: The insulating base plate is provided with an insulating frame and an insulating cover; The insulating frame includes an outer wall and an inner boss. The inner boss is disposed in the middle of the outer wall to form an annular groove with an upward opening. The inner boss is provided with a first through groove for the current output terminal to pass through. The insulating cover is detachably connected to the top of the insulating frame; the insulating base plate has a first clearance through hole, and the insulating cover has a second clearance through hole, both of which correspond to the first through groove.

4. An inductor with integrated filtering function according to claim 3, characterized in that: The insulating frame contains a conductive copper busbar, the outer wall has an outwardly flared bend, and the inner boss has a second through slot. The insulating base plate is provided with a third clearance through hole and a fourth clearance through hole. The third clearance through hole is located between the filter magnetic ring and the outwardly expanded bending portion. The fourth clearance through hole corresponds to the second through groove. One end of the conductive copper busbar passes through the third clearance through hole and exits the insulating base plate. The other end of the conductive copper busbar passes through the second through groove and the fourth clearance through hole and exits the insulating base plate.

5. An inductor with integrated filtering function according to claim 4, characterized in that: The inverter inductor includes an upper yoke, an insulating partition, a middle column, a coil, and a lower yoke. The axial direction of the middle column is parallel to the surface of the insulating base plate. The upper yoke, the lower yoke, and the middle column form a magnetic circuit. The coil is sleeved on the middle column. The two ends of the coil are separated from the upper yoke and the lower yoke by the insulating partition, respectively.

6. An inductor with integrated filtering function according to claim 5, characterized in that: The coil is provided in two quantities, and two first through slots are provided accordingly. The two first through slots are spaced apart, and the second through slot is provided between the two first through slots. The two first through slots and the second through slot are arranged in a straight line on the inner boss.

7. An inductor with integrated filtering function according to claim 5, characterized in that: The insulating base plate is provided with a support structure, which includes a protrusion and several support platforms. The protrusion is located on the top surface of the insulating cover and abuts against the lower yoke. The support platforms are located in areas outside the insulating frame and abut against the corresponding upper or lower yoke.

8. An inductor with integrated filtering function according to claim 1, characterized in that: The insulating base plate is provided with a fifth clearance through hole, through which the current input terminal of the inverter inductor passes out of the insulating base plate.

9. An inductor with integrated filtering function according to claim 1, characterized in that: The insulating base plate has several support feet on the side away from the inverter inductor.

10. An inverter, characterized in that, Including an inductor with integrated filtering function as described in any one of claims 1-9.

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