Inductor structure applied to IGBT (Insulated Gate Bipolar Translator) charging pile

Abstract

The utility model discloses an inductance structure applied to an IGBT (Insulated Gate Bipolar Translator) charging pile, which belongs to the technical field of electronic components and comprises a heightened supporting seat body, an annular metal magnetic powder core, a connecting part, a winding structure, a hoop connecting structure and a plurality of pin structures, the annular metal magnetic powder core is arranged above the block-up type supporting seat body, and the connecting part is respectively connected with the block-up type supporting seat body and the annular metal magnetic powder core; the winding structure is arranged on the annular metal magnetic powder core in a surrounding mode, and the hoop connecting structure is connected with the annular metal magnetic powder core and the heightening type supporting seat body. A plurality of pin structures are distributed on the periphery of the heightened supporting seat body, and each pin structure is correspondingly connected with the winding structure. The utility model solves the technical problem of how to improve the performance of the inductor.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic components, in particular to an inductor structure applied to an IGBT charging pile. Background Art

[0002] Electronic components are components of electronic elements and small machines and instruments. They are often composed of several parts and can be used interchangeably in similar products. They often refer to certain parts in industries such as electrical appliances, radio, and instruments, and are the general term for electronic devices such as capacitors, transistors, hairsprings, and mainsprings. Electronic components come in a wide variety of types and functions and are widely used in fields such as communication, computers, medicine, and military.

[0003] Furthermore, IGBT is the abbreviation of the English Insulated Gate Bipolar Transistor, which means insulated gate bipolar transistor. It is a composite fully controlled voltage-driven power semiconductor device composed of BJT (bipolar junction transistor) and MOS (insulated gate field effect transistor). It combines the advantages of high input impedance of MOSFET and low on-state voltage drop of GTR, and has characteristics such as small drive power, low saturation voltage drop, high temperature resistance, and impact resistance. It is very suitable for application in variable current systems with a DC voltage of 600V or above, such as electric vehicle charging piles.

[0004] Specifically, IGBT is the core device in the charging pile to achieve power conversion and circuit control. It can efficiently convert the alternating current of the power grid into direct current to provide the required charging power for the battery of the electric vehicle. By precisely controlling the switching state of the IGBT, the charging pile can achieve fine management of the charging process, thereby improving the charging efficiency and shortening the charging time. The IGBT also has functions such as overload protection and short-circuit protection, and can quickly cut off the circuit when abnormal conditions such as overcurrent and overvoltage occur in the charging pile to protect the stable operation of the system.

[0005] Based on this, Chinese Patent CN115402139B discloses a wind-solar-storage IGBT reversible DC fast charging pile, which includes: a wind power input device, a photovoltaic power input device, a storage battery input device, a grid power input device, a DC current sensor, a three-phase four-wire vector inverter, a combined switch device and a control device. The wind power input device, the photovoltaic power input device, and the storage battery input device are respectively electrically connected to the input end of the DC current sensor. The output end of the DC current sensor is electrically connected to the three-phase four-wire vector inverter. The output ends of the three-phase four-wire vector inverter and the grid power input device are electrically connected to the combined switch device. The combined switch device is used to output a DC high-voltage charging power supply. The technical solution disclosed in this patent can solve the technical problems of integrating energy in multiple aspects, meeting current outputs of 800A or even higher, enabling fast charging in remote areas, and reducing the energy burden on the national grid.

[0006] Furthermore, another Chinese Patent CN207800328U also discloses an inductor for a charging pile, which includes a magnetic core and windings. The magnetic core includes an upper yoke of the magnetic core, a lower yoke of the magnetic core, a left core column magnetic core, and a right core column magnetic core. The left core column magnetic core and the right core column magnetic core are symmetrically arranged between the upper yoke of the magnetic core and the lower yoke of the magnetic core. The left side surface of the left core column magnetic core is flush with the left side surfaces of the upper yoke of the magnetic core and the lower yoke of the magnetic core. The right side surface of the right core column magnetic core is flush with the right side surfaces of the upper yoke of the magnetic core and the lower yoke of the magnetic core. The windings include a first winding wound around the left core column magnetic core and a second winding wound around the right core column magnetic core. In the technical solution disclosed in this patent, there are only two core columns, the magnetic core combination method is simple, and the consistency of the two core columns is good; the windings are wound vertically with flat wires, and each layer of flat wire can be directly in contact with external air, which is conducive to heat dissipation, the overall heat dissipation effect of the inductor is good, and the temperature rise is low.

[0007] However, the above-disclosed inductor for a charging pile still has the technical problems of inconvenient assembly and low magnetic flux density. Specifically, in existing technical requirements, higher performance requirements are put forward for inductors applied to IGBT charging pile modules. Generally speaking, such inductors need to have higher magnetic flux density, higher DC superposition, and lower losses in order to cooperate with IGBT charging piles to meet current outputs of 800A or even higher. On this basis, inductor manufacturers also require that inductors have a simple assembly basis to facilitate the mass production requirements of manufacturers. Summary of the Utility Model

[0008] Based on this, in view of the technical problem of how to improve the performance of the inductor, it is necessary to provide an inductor structure applied to an IGBT charging pile.

[0009] An inductance structure applied to an IGBT charging pile, comprising: a raised support base, a toroidal metal powder core, a connecting part, a winding structure, a clamp connection structure, and a plurality of pin structures; the toroidal metal powder core is arranged above the raised support base, and the connecting part connects the raised support base and the toroidal metal powder core respectively; the winding structure is arranged around the toroidal metal powder core, and the clamp connection structure connects the toroidal metal powder core and the raised support base respectively; a plurality of pin structures are distributed around the raised support base, and each pin structure is correspondingly connected to the winding structure.

[0010] Further, the raised support base has a support main body, a raised base, a gas guide groove, and a plurality of insertion hole structures.

[0011] Furthermore, the raised base is arranged below the support main body, and the gas guide groove is arranged in the raised base; a plurality of the insertion hole structures are evenly distributed in the support main body, and each insertion hole structure is correspondingly connected to the winding structure or the pin structure.

[0012] Furthermore, the winding structure has a first winding part, a second winding part, and a lead-out part.

[0013] Furthermore, both the first winding part and the second winding part are arranged around the toroidal metal powder core, and the first winding part and the second winding part are arranged at intervals.

[0014] Furthermore, both ends of the first winding part and the second winding part are each connected to one of the lead-out parts, and each lead-out part is correspondingly connected to one of the insertion hole structures arranged in the support main body.

[0015] Furthermore, the support main body is provided with a plurality of clamp insertion hole structures; a plurality of the clamp insertion hole structures are evenly distributed in the support main body.

[0016] Furthermore, the clamp connection structure has an insertion type isolation structure and a locking rod structure.

[0017] Furthermore, the insertion type isolation structure connects the toroidal metal powder core to the support main body, the lower part of the insertion type isolation structure is correspondingly connected to the clamp insertion hole structure, and the insertion type isolation structure is arranged between the first winding part and the second winding part.

[0018] Furthermore, both of the locking rod structures are connected to the insertion type isolation structure, and each locking rod structure is abutted and connected to the inner ring side surface of the toroidal metal powder core.

[0019] In summary, an inductance structure for an IGBT charging pile according to the present utility model is respectively provided with a raised support body, a ring-shaped metal magnetic powder core, a connecting part, a winding structure, a clamp connection structure, and a plurality of pin structures; the ring-shaped metal magnetic powder core is arranged above the raised support body, and the connecting part connects the raised support body and the ring-shaped metal magnetic powder core respectively; the winding structure is wound around the ring-shaped metal magnetic powder core, and the clamp connection structure connects the ring-shaped metal magnetic powder core and the raised support body respectively; a plurality of pin structures are distributed around the raised support body, and each pin structure is correspondingly connected to the winding structure. The inductance structure for an IGBT charging pile according to the present utility model uses metal magnetic powder to form a ring-shaped magnetic core, that is, the ring-shaped metal magnetic powder core. This kind of metal magnetic powder can usually be nickel-zinc ferrite or manganese-zinc ferrite, etc. The winding structure can be formed by winding a flat wire or other types of wires around the ring-shaped metal magnetic powder core vertically. This vertical winding method makes the coil more compact, helps to reduce the overall volume of the inductor, and improves the magnetic flux density and DC superposition performance of the inductor; at the same time, proper winding and corresponding material selection can further reduce eddy current loss, thereby improving the performance of the inductor. Therefore, the inductance structure for an IGBT charging pile according to the present utility model solves the technical problem of how to improve the performance of the inductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of an inductance structure for an IGBT charging pile according to the present utility model;

[0021] Figure 2 is a schematic structural diagram of the inductance structure for an IGBT charging pile according to the present utility model in another direction;

[0022] Figure 3 is a schematic structural diagram of the inductance structure for an IGBT charging pile according to the present utility model in another direction;

[0023] Figure 4 is a schematic structural diagram of the inductance structure for an IGBT charging pile according to the present utility model in another direction. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0027] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0030] Please also refer to Figures 1 to 4 , an inductance structure for an IGBT charging pile according to the present utility model includes: a raised support seat body 1, an annular metal magnetic powder core 2, a connecting portion 3, a winding structure 4, a clamp connection structure 5, and a plurality of pin structures 6; the annular metal magnetic powder core 2 is disposed above the raised support seat body 1, and the connecting portion 3 connects the raised support seat body 1 and the annular metal magnetic powder core 2 respectively; the winding structure 4 is disposed around the annular metal magnetic powder core 2, and the clamp connection structure 5 connects the annular metal magnetic powder core 2 and the raised support seat body 1 respectively; a plurality of pin structures 6 are distributed around the raised support seat body 1, and each pin structure 6 is correspondingly connected to the winding structure 4.

[0031] Specifically, an inductance structure for an IGBT charging pile according to the present utility model is proposed based on a vertical winding inductance structure, which uses metal magnetic powder to form an annular magnetic core, that is, the annular metal magnetic powder core 2. This kind of metal magnetic powder can usually be nickel-zinc ferrite or manganese-zinc ferrite, etc. The winding structure 4 can be formed by winding flat wires or other types of wires vertically around the annular metal magnetic powder core 2. This vertical winding method makes the coil more compact, helps to reduce the overall volume of the inductor, and improves the magnetic flux density and DC superposition performance of the inductor; at the same time, proper winding and corresponding material selection can further reduce eddy current losses, thereby improving the performance of the inductor.

[0032] Further, after assembling the winding structure 4 on the raised support base 1 by means of equipment such as a winding machine, the user can also connect the two through the connecting portion 3. Specifically, the connecting portion 3 can be a groove structure to temporarily accommodate and position the bottom of the annular metal magnetic powder core 2; in addition, the connecting portion 3 can also be a connecting part with adhesiveness, such as a connecting glue with a resin as the main body in a surrounding manner. After the connecting portion 3 connects the raised support base 1 and the annular metal magnetic powder core 2, the user can also use the clamp connection structure 5 to fixedly connect the annular metal magnetic powder core 2 to the raised support base 1. On the premise of facilitating the assembly method of the two, it can also cooperate with the connecting portion 3 for reinforced connection. After connecting each component group, the pin structure 6 can facilitate the insertion of the inductor onto an externally arranged circuit, and the pin structure 6 is also electrically connected to the winding structure 4, so that the externally arranged circuit can be electrically connected to the winding structure 4 through it. Specifically, the pin structure 6 can be abutted and arranged on the bottom side of the winding structure 4 to make the electrical conduction between the two; thereafter, the connection relationship between the two is further strengthened and stabilized by using the method of wire bonding.

[0033] Further, the raised support base 1 has a support main body 101, a raised base 102, an air guide groove 103, and a plurality of insertion hole structures 104; the raised base 102 is arranged below the support main body 101, and the air guide groove 103 is arranged in the raised base 102; a plurality of the insertion hole structures 104 are evenly distributed in the support main body 101, and each insertion hole structure 104 is correspondingly connected to the winding structure 4 or the pin structure 6. Specifically, the annular metal magnetic powder core 2 is connected to the support main body 101 through the connecting portion 3, the raised base 102 is arranged at the lower part of the support main body 101, and the air guide groove 103 is penetrated and arranged in the raised base 102; the arrangements of the raised base 102 and the air guide groove 103 are beneficial to raising the annular metal magnetic powder core 2 and the winding structure 4 with relatively large heat generation amounts from the externally arranged circuit, strengthening the gas flow around them, so as to further improve the heat dissipation performance of the inductor. The insertion hole structures 104 can respectively insert the lead-out part of the winding structure 4 and the pin structure 6, or can also insert both at the same time to facilitate the electrical connection between the two.

[0034] Further, the winding structure 4 has a first winding portion 401, a second winding portion 402, and a lead-out portion 403; both the first winding portion 401 and the second winding portion 402 are disposed around the annular metal magnetic powder core 2, and the first winding portion 401 and the second winding portion 402 are spaced apart; both ends of the first winding portion 401 and the second winding portion 402 are each connected to one of the lead-out portions 403, and each lead-out portion 403 is correspondingly connected to the insertion hole structure 104 provided in one of the support bodies 101. Specifically, both the first winding portion 401 and the second winding portion 402 have two ends for winding, and each end of the two is connected to the support body 101 through one of the lead-out portions 403. Moreover, each pin structure 6 and one of the lead-out portions 403 are in abutting connection in one of the insertion hole structures 104.

[0035] Further, the support body 101 is provided with a plurality of clamp insertion hole structures 101a; the plurality of clamp insertion hole structures 101a are evenly distributed in the support body 101. The clamp connection structure 5 has an insertion type isolation structure 501 and a locking rod structure 502; the insertion type isolation structure 501 connects the annular metal magnetic powder core 2 to the support body 101, the lower part of the insertion type isolation structure 501 is correspondingly connected to the clamp insertion hole structure 101a, and the insertion type isolation structure 501 is disposed between the first winding portion 401 and the second winding portion 402; both the locking rod structures 502 are connected to the insertion type isolation structure 501, and each locking rod structure 502 is in abutting connection with the inner ring side surface of the annular metal magnetic powder core 2. Specifically, the insertion type isolation structure 501 is in the shape of a hoop and can be inserted into the annular metal magnetic powder core 2 from the side until it is connected to the clamp insertion hole structure 101a provided in the support body 101. After that, the two locking rod structures 502 are respectively inserted to abut against the inner side surface of the annular metal magnetic powder core 2 to realize clamping of the annular metal magnetic powder 2. In addition, the insertion type isolation structure 501 can also serve as an insulation isolation structure in the winding structure 4 to insulate and separate the first winding portion 401 and the second winding portion 402.

[0036] In summary, the inductance structure of the present utility model applied to an IGBT charging pile is respectively provided with a raised support seat body 1, a ring-shaped metal magnetic powder core 2, a connecting portion 3, a winding structure 4, a clamp connection structure 5, and a plurality of pin structures 6; the ring-shaped metal magnetic powder core 2 is disposed above the raised support seat body 1, and the connecting portion 3 connects the raised support seat body 1 and the ring-shaped metal magnetic powder core 2 respectively; the winding structure 4 is wound around the ring-shaped metal magnetic powder core 2, and the clamp connection structure 5 connects the ring-shaped metal magnetic powder core 2 and the raised support seat body 1 respectively; a plurality of pin structures 6 are distributed around the raised support seat body 1, and each pin structure 6 is correspondingly connected to the winding structure 4. The inductance structure of the present utility model applied to an IGBT charging pile uses metal magnetic powder to form a ring-shaped magnetic core, that is, the ring-shaped metal magnetic powder core 2. This kind of metal magnetic powder can usually be nickel-zinc ferrite or manganese-zinc ferrite, etc. The winding structure 4 can be formed by standing flat wires or other types of wires around the ring-shaped metal magnetic powder core 2. This vertical winding method makes the coil more compact, helps to reduce the overall volume of the inductor, and improves the magnetic flux density and DC superposition performance of the inductor; at the same time, proper winding and corresponding material selection can further reduce eddy current losses, thereby improving the performance of the inductor. Therefore, the inductance structure of the present utility model applied to an IGBT charging pile solves the technical problem of how to improve the performance of the inductor.

[0037] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0038] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. An inductor structure applied to an IGBT charging pile, characterized in that: It includes: A raised support seat body (1), an annular metal magnetic powder core (2), a connecting part (3), a winding structure (4), a clamp connection structure (5), and a plurality of pin structures (6); the annular metal magnetic powder core (2) is arranged above the raised support seat body (1), and the connecting part (3) connects the raised support seat body (1) and the annular metal magnetic powder core (2) respectively; the winding structure (4) is arranged around the annular metal magnetic powder core (2), and the clamp connection structure (5) connects the annular metal magnetic powder core (2) and the raised support seat body (1) respectively; a plurality of pin structures (6) are distributed around the raised support seat body (1), and each pin structure (6) is correspondingly connected to the winding structure (4).

2. The inductor structure applied to an IGBT charging pile according to claim 1, characterized in that: The raised support seat body (1) has a support main body (101), a raised base (102), an air guide groove (103), and a plurality of insertion hole structures (104).

3. An inductance structure applied to an IGBT charging pile according to claim 2, characterized in that: The raised base (102) is arranged below the support main body (101), and the air guide groove (103) is arranged in the raised base (102); a plurality of the insertion hole structures (104) are evenly distributed in the support main body (101), and each insertion hole structure (104) is correspondingly connected to the winding structure (4) or the pin structure (6).

4. An inductance structure applied to an IGBT charging pile according to claim 3, characterized in that: The winding structure (4) has a first winding part (401), a second winding part (402), and a lead-out part (403).

5. The inductor structure applied to an IGBT charging pile according to claim 4, characterized in that: Both the first winding part (401) and the second winding part (402) are arranged around the annular metal magnetic powder core (2), and the first winding part (401) and the second winding part (402) are arranged at intervals.

6. The inductance structure applied to an IGBT charging pile according to claim 5, wherein: Both ends of the first winding part (401) and the second winding part (402) are each connected to a lead-out part (403), and each lead-out part (403) is correspondingly connected to the insertion hole structure (104) provided in a support main body (101).

7. An inductance structure applied to an IGBT charging pile according to claim 6, characterized in that: The support main body (101) is provided with a plurality of clamp insertion hole structures (101a); a plurality of the clamp insertion hole structures (101a) are evenly distributed in the support main body (101).

8. An inductance structure applied to an IGBT charging pile according to claim 7, characterized in that: The clamp connection structure (5) has an insertion type isolation structure (501) and a locking rod structure (502).

9. An inductance structure applied to an IGBT charging pile according to claim 8, characterized in that: The insertion type isolation structure (501) connects the annular metal magnetic powder core (2) to the support main body (101), the lower part of the insertion type isolation structure (501) is correspondingly connected to the clamp insertion hole structure (101a), and the insertion type isolation structure (501) is arranged between the first winding part (401) and the second winding part (402).

10. An inductance structure applied to an IGBT charging pile according to claim 9, characterized in that: Both the two locking rod structures (502) are connected to the insertion type isolation structure (501), and each locking rod structure (502) is abutted and connected to the inner ring side surface of the annular metal magnetic powder core (2).

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