CN112233886A - Magnetic core, magnetic integrated device, circuit board and manufacturing method of magnetic integrated device - Google Patents
Magnetic core, magnetic integrated device, circuit board and manufacturing method of magnetic integrated device Download PDFInfo
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- CN112233886A CN112233886A CN202011112664.9A CN202011112664A CN112233886A CN 112233886 A CN112233886 A CN 112233886A CN 202011112664 A CN202011112664 A CN 202011112664A CN 112233886 A CN112233886 A CN 112233886A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
Abstract
The invention discloses a magnetic core, a magnetic integrated device, a circuit board and a manufacturing method of the magnetic integrated device, wherein a first magnetic core part and a second magnetic core part of the magnetic core adopt upper and lower two-layer distribution structures, and are respectively wound by different windings, so that originally separated magnetic devices are integrated together, the volumes of the magnetic core and the magnetic integrated device can be effectively reduced, and the production cost is reduced. The magnetic core component of the inserting piece is firstly wound with the coil and then inserted into the magnetic core main body, so that the automatic production of magnetic devices is facilitated, the production difficulty is reduced, the production efficiency is improved, and the production cost can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of electronic devices, in particular to a magnetic core, a magnetic integrated device, a circuit board and a manufacturing method of the magnetic integrated device.
Background
Magnetic devices, magnetic components for short, are widely applied to the fields of power electronic power conversion, switching power supplies, variable frequency air conditioning systems and the like, and can be filters, transformers, inductors and the like. The existing magnetic device product adopts a discrete magnetic device to carry out independent design and use, so that the magnetic core device has more quantity and large volume, and the cost is higher.
Among the prior art scheme, also have and adopt magnetism integrated technology, independent magnetism spare passes through the design of magnetic core structure promptly for the produced magnetic flux of two different magnetism spares produces the interact: either strengthened or weakened. The technology integrates the two magnetic pieces together, thereby achieving the purposes of reducing the volume of the magnetic pieces and reducing the cost.
However, the volume of the existing magnetic integrated device is still large, the wiring design of a circuit board is difficult, and in addition, the magnetic core design of the existing magnetic integrated device causes the production difficulty and the production cost of the magnetic integrated device to be high.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the invention provides a magnetic core, a magnetic integrated device, a circuit board and a manufacturing method of the magnetic integrated device, which can reduce the volume of the magnetic integrated device, facilitate automatic production and reduce production cost.
In a first aspect, an embodiment of the present invention provides a magnetic core, including:
a magnetic core main body including two annular magnetic core portions arranged side by side, a first magnetic core portion and a second magnetic core portion respectively, the second magnetic core portion being arranged below the first magnetic core portion, the magnetic core main body including a first magnetic core assembly in which a magnetic path is shared by the first magnetic core portion and the second magnetic core portion;
the insert magnetic core assembly is used for winding coils;
the first magnetic core part and/or the second magnetic core part are/is inserted with the inserting sheet magnetic core component, and air gaps are formed between two ends of the inserting sheet magnetic core component and the annular magnetic core part where the inserting sheet magnetic core component is located.
The magnetic core provided by the embodiment of the invention at least has the following beneficial effects: the magnetic core comprises a first magnetic core part and a second magnetic core part, wherein the first magnetic core part and the second magnetic core part adopt upper and lower layer distribution structures and are respectively wound by different windings, so that originally separated magnetic devices are integrated together, the volumes of the magnetic core and the magnetic integrated devices can be effectively reduced, the production cost is reduced, and due to the upper and lower layer distribution structures, the area of the magnetic devices on a circuit board can be reduced, and the wiring of the circuit board can be facilitated. Because the first magnetic core part and the second magnetic core part are provided with the first magnetic core component sharing the magnetic circuit, the size of the magnetic core and the size of a magnetic core device using the magnetic core can be further reduced, and the wiring design of an electric control circuit board and the miniaturization design of the electric control circuit board, the electric control box and the like are facilitated. Because inserted sheet magnetic core assembly inserts and sets up in the annular magnetic core portion of magnetic core main part, consequently can insert first magnetic core portion or second magnetic core portion again after establishing the coil on inserted sheet magnetic core assembly when production, be convenient for realize magnetic device's automated production, the reduction production degree of difficulty improves production efficiency, can effectively reduce manufacturing cost. Because inserted sheet magnetic core subassembly sets up in annular magnetic core portion through the mode of pegging graft, can conveniently form the air gap, this air gap can avoid magnetic device's magnetic core saturation phenomenon, can conveniently set up the height of air gap between inserted sheet magnetic core subassembly and the annular magnetic core portion moreover when designing and add man-hour, convenient processing production.
In an embodiment of the invention, the magnetic core insert component is inserted into the first magnetic core portion, the magnetic core insert component inserted into the first magnetic core portion is a first magnetic core center pillar, and a first air gap is formed between two ends of the first magnetic core center pillar and the first magnetic core portion respectively. A first core leg is provided in the first core portion, wherein the first core leg is inserted into the first core portion. Therefore, when the integrated device of production magnetism, can wind coil winding around establishing behind first magnetic core center pillar earlier, insert again in first magnetic core portion, can reduce the production degree of difficulty, and the production efficiency is improved, and simultaneously, because first magnetic core center pillar and first magnetic core part set up respectively, consequently only need confirm the height of first magnetic core center pillar, can set up the height of first air gap, when the height when needs adjust first air gap, need not to adjust the parameter of magnetic core main part and can design out the magnetic device of different demands, consequently the magnetic core main part only need adopt general magnetic core subassembly can, can effectively reduce manufacturing cost.
In an embodiment of the invention, the second magnetic core portion is inserted with the insert magnetic core assembly, the insert magnetic core assembly inserted into the second magnetic core portion is a second magnetic core center pillar, and a second air gap is formed between two ends of the second magnetic core center pillar and the second magnetic core portion respectively. A second core leg is provided in the second core portion, wherein the second core leg is inserted into the second core portion. Therefore, in the production of the magnetic integrated device, the coil winding can be wound around the center pillar of the second core and then inserted into the second core portion. The production difficulty can be reduced, the automatic production is convenient, and the production efficiency is improved. Simultaneously, because second magnetic core center pillar and second magnetic core part do not set up, consequently only need confirm the height of second magnetic core center pillar, can set up the height of second air gap, when the height when the air gap is adjusted to needs, need not to adjust the magnetic core main part the parameter can design the magnetic device of different demands, consequently the magnetic core main part only need adopt general magnetic core subassembly can, can effective reduction in production cost.
In an embodiment of the present invention, the first core portion and the second core portion are respectively inserted with the magnetic core insert assembly, the magnetic core insert assembly inserted into the first core portion is a first magnetic core center pillar, the magnetic core insert assembly inserted into the second core portion is a second magnetic core center pillar, a first air gap is formed between two ends of the first magnetic core center pillar and the first core portion, and a second air gap is formed between two ends of the second magnetic core center pillar and the second core portion. Since the first and second magnetic core center pillars are plug-in connected to the magnetic core main body, when the magnetic device is manufactured, the first and second magnetic core center pillars may be inserted into the first and second magnetic core portions of the magnetic core main body after the coil windings are wound around the first and second magnetic core center pillars, respectively. Therefore, the production difficulty can be reduced, the automatic production is convenient, and the production efficiency is improved. Meanwhile, the heights of the first air gap in the first magnetic core part and the second air gap in the second magnetic core part can be determined only by setting the heights of the first magnetic core center pillar and the second magnetic core center pillar. The magnetic devices with different requirements can be designed without adjusting the parameters of the magnetic core main body, so that the magnetic core main body only needs to adopt a universal magnetic core component, the production cost can be effectively reduced, and the large-scale automatic production is facilitated.
In one embodiment of the present invention, the first core portion and the second core portion are integrally connected. The first core portion and the second core portion are integrally molded, and for example, a 8-shaped core assembly is used as the core main body, and the first core portion is provided at the upper end of the 8-shaped core assembly and the second core portion is provided at the lower end thereof. First magnetic core portion with second magnetic core portion links into an organic whole, and the cost of assembly can be reduced to integrated into one piece's magnetic core main part, can adopt conventional magnetic core subassembly moreover, and the purchase of being convenient for helps reduction in production cost.
In one embodiment of the present invention, a third magnetic core leg is disposed in the second magnetic core portion, and both ends of the third magnetic core leg are integrally connected to the second magnetic core portion. Through set up the third magnetic core center pillar in second magnetic core portion, can let the coil winding of lower floor around establishing on the center pillar, can dwindle the width of second magnetic core portion both sides like this, further reduce the volume of second magnetic core subassembly, further reduce cost. Wherein the both ends of third center pillar link into an integrated entity with second magnetic core portion respectively, and second magnetic core portion is 8 font magnetic cores promptly, consequently can use general 8 font magnetic core subassembly, can effectively reduction in production cost, the large-scale automated production of being convenient for.
In one embodiment of the present invention, the magnetic core main body includes a second magnetic core assembly, the second magnetic core assembly and the first magnetic core assembly constitute the first magnetic core portion, a fourth magnetic core center pillar is disposed in the first magnetic core portion, and the fourth magnetic core center pillar is integrally connected with the second magnetic core assembly. Through set up the fourth magnetic core center pillar in first magnetic core portion, can let the coil winding of upper strata wind and establish on the fourth magnetic core center pillar, can dwindle the width of first magnetic core portion both sides like this, further reduce the volume of first magnetic core portion, further reduce cost. Because fourth magnetic core center pillar links into an organic whole with second magnetic core subassembly, wholly be E font magnetic core like this, consequently can use general E font magnetic core subassembly, effective reduction in production cost is convenient for extensive automated production.
In an embodiment of the invention, a third air gap is formed between the fourth magnetic core center leg and the first magnetic core assembly. And the third air gap is arranged on the fourth magnetic core, so that the uniformity of the inductance of the magnetic device is improved.
In an embodiment of the invention, the magnetic core main body includes a second magnetic core component, the second magnetic core component and the first magnetic core component constitute the first magnetic core portion, the second magnetic core component includes a first side pillar and a second side pillar disposed at two sides of the first side pillar, the second side pillar and the first magnetic core component constitute the first magnetic core portion, and a fourth air gap is formed between the second side pillar and the first magnetic core component. The first side column and the second side columns arranged on two sides of the first side column integrally form a U-shaped magnetic core. And a fourth air gap is formed between the second side column and the first magnetic core assembly, so that the uniformity of the inductance of the magnetic device is improved.
In a second aspect, the present invention provides a magnetic integrated device, including the magnetic core of the first aspect of the present invention, and further including a first winding, where the first winding is wound on the tab magnetic core assembly. Because inserted sheet magnetic core assembly inserts and sets up in the annular magnetic core portion of magnetic core main part, consequently can insert again in the annular magnetic core portion of magnetic core main part after establishing first winding on inserted sheet magnetic core assembly when production, can be convenient for realize the automated production of magnetism integrated device, the reduction in production degree of difficulty improves production efficiency, can effectively reduction in production cost. Because inserted sheet magnetic core subassembly sets up in annular magnetic core portion through the mode of pegging graft, can conveniently form the air gap, this air gap can avoid the magnetic core saturation phenomenon of magnetism integrated device, can conveniently set up the height of air gap between inserted sheet magnetic core subassembly and the annular magnetic core portion moreover when designing and add man-hour, convenient processing production. In addition, the magnetic core of the magnetic integrated device comprises a first magnetic core part and a second magnetic core part, wherein the first magnetic core part and the second magnetic core part adopt upper and lower two-layer distribution structures and are respectively used for winding different windings, so that the originally separated magnetic integrated device is integrated, the volumes of the magnetic core and the magnetic integrated device can be effectively reduced, the production cost is reduced, and the area of the magnetic integrated device on a circuit board can be reduced due to the upper and lower two-layer distribution structures, so that the wiring of the circuit board can be facilitated. Because the first magnetic core part and the second magnetic core part are provided with the first magnetic core component sharing the magnetic circuit, the size of the magnetic core and the size of a magnetic core device using the magnetic core can be further reduced, and the wiring design of an electric control circuit board and the miniaturization design of the electric control circuit board, the electric control box and the like are facilitated.
In a third aspect, the present invention provides a circuit board including the magnetic integrated device provided in the second aspect of the present invention. Because magnetism integrated device has upper and lower two-layer distribution's first magnetic core portion and second magnetic core portion to supply the winding of different grade type to wind and establish, realized that the magnetism integrated device that will originally separate is integrated together, can effectively reduce the volume of magnetic core and magnetism integrated device, reduction in production cost, owing to have upper and lower two-layer distribution structure, can reduce the area of magnetism integrated device on the circuit board, can be convenient for the wiring of circuit board. Because the first magnetic core part and the second magnetic core part are provided with the first magnetic core component sharing the magnetic circuit, the size of the magnetic core and the size of a magnetic core device using the magnetic core can be further reduced, and the wiring design of an electric control circuit board and the miniaturization design of the electric control circuit board, the electric control box and the like are facilitated. In addition, because the inserted sheet magnetic core subassembly of magnetism integrated device inserts and sets up in the annular magnetic core portion of magnetic core main part, consequently can insert the annular magnetic core portion of magnetic core main part again after establishing first winding on inserted sheet magnetic core subassembly earlier when production, can be convenient for realize the automated production of magnetism integrated device, reduce the production degree of difficulty, improve production efficiency, can effectively reduce manufacturing cost. Because inserted sheet magnetic core subassembly sets up in annular magnetic core portion through the mode of pegging graft, can conveniently form the air gap, this air gap can avoid the magnetic core saturation phenomenon of magnetism integrated device, can conveniently set up the height of air gap between inserted sheet magnetic core subassembly and the annular magnetic core portion moreover when designing and add man-hour, convenient processing production, reduction in production cost.
In a fourth aspect, the present invention provides a household electrical appliance, including the circuit board of the third aspect of the present invention, because the magnetic integrated device adopted by the circuit board has the first magnetic core part and the second magnetic core part which are distributed in the upper and lower layers for winding different types of windings, the originally separate magnetic integrated devices are integrated together, the volume of the magnetic core and the magnetic integrated device can be effectively reduced, the production cost is reduced, and because the magnetic integrated device has the distributed structure in the upper and lower layers, the area of the magnetic integrated device on the circuit board can be reduced, and the wiring of the circuit board can be facilitated. Because the first magnetic core part and the second magnetic core part are provided with the first magnetic core component sharing the magnetic circuit, the size of the magnetic core and the size of a magnetic core device using the magnetic core can be further reduced, and the wiring design of an electric control circuit board and the miniaturization design of the electric control circuit board, the electric control box and the like are facilitated. In addition, because the inserted sheet magnetic core subassembly of magnetism integrated device inserts and sets up in the annular magnetic core portion of magnetic core main part, consequently can insert the annular magnetic core portion of magnetic core main part again after establishing first winding on inserted sheet magnetic core subassembly earlier when production, can be convenient for realize the automated production of magnetism integrated device, reduce the production degree of difficulty, improve production efficiency, can effectively reduce manufacturing cost. Because inserted sheet magnetic core subassembly sets up in annular magnetic core portion through the mode of pegging graft, can conveniently form the air gap, this air gap can avoid the magnetic core saturation phenomenon of magnetism integrated device, can conveniently set up the height of air gap between inserted sheet magnetic core subassembly and the annular magnetic core portion moreover when designing and add man-hour, convenient processing production, reduction in production cost.
In a fifth aspect, the present invention provides a method for manufacturing a magnetic integrated device, for manufacturing the magnetic integrated device provided in the second aspect of the present invention, the method comprising the steps of:
obtaining a magnetic core main body, wherein the magnetic core main body comprises two annular magnetic core parts arranged side by side, namely a first magnetic core part and a second magnetic core part, the second magnetic core part is arranged below the first magnetic core part, and the magnetic core main body comprises a first magnetic core assembly of which a magnetic circuit is shared by the first magnetic core part and the second magnetic core part;
obtaining an insert magnetic core assembly, and winding a coil winding on the insert magnetic core assembly;
and inserting the insert magnetic core assembly wound with the coil winding into the first magnetic core part or the second magnetic core part.
In the embodiment of the invention, because the inserting sheet magnetic core component and the magnetic core main body are separately arranged, and the inserting sheet magnetic core component can be inserted into the annular magnetic core part of the magnetic core main body, when the magnetic integrated device is manufactured, the coil winding is wound on the inserting sheet magnetic core component and then the inserting sheet magnetic core component is inserted into the annular magnetic core part of the magnetic core main body, so that the automatic production of the magnetic integrated device can be conveniently realized, the production difficulty is reduced, the production efficiency is improved, and the production cost can be effectively reduced. Because inserted sheet magnetic core subassembly sets up in annular magnetic core portion through the mode of pegging graft, can conveniently form the air gap, this air gap can avoid the magnetic core saturation phenomenon of magnetism integrated device, can conveniently set up the height of air gap between inserted sheet magnetic core subassembly and the annular magnetic core portion moreover when designing and add man-hour, convenient processing production. The magnetic integrated device manufactured by the manufacturing method of the magnetic integrated device provided by the embodiment of the invention comprises the first magnetic core part and the second magnetic core part, wherein the first magnetic core part and the second magnetic core part adopt the upper and lower layer distribution structures and are respectively wound by different windings, so that the originally separated magnetic integrated device is integrated, the volumes of the magnetic core and the magnetic integrated device can be effectively reduced, the production cost is reduced, and the area of the magnetic integrated device on a circuit board can be reduced due to the upper and lower layer distribution structures, so that the wiring of the circuit board can be facilitated. Because the first magnetic core part and the second magnetic core part are provided with the first magnetic core component sharing the magnetic circuit, the size of the magnetic core and the size of a magnetic core device using the magnetic core can be further reduced, and the wiring design of an electric control circuit board and the miniaturization design of the electric control circuit board, the electric control box and the like are facilitated.
In an embodiment of the present invention, the winding of the coil winding on the insert sheet magnetic core component specifically includes the following steps: and automatic winding equipment is adopted to wind the coil winding on the inserting sheet magnetic core component. Because inserted sheet magnetic core subassembly and magnetic core main part disconnect-type set up, inserted sheet magnetic core subassembly can insert and set up in the annular magnetic core portion of magnetic core main part, consequently when the integrated device of preparation magnetism, can adopt automatic winding equipment to wind on inserted sheet magnetic core subassembly and establish coil winding, then accomplish the equipment in inserting the annular magnetic core portion of magnetic core main part with the coil winding after the wire winding, can realize the automated production of the integrated subassembly of magnetism, improve production efficiency, reduction in production cost.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a structural view of a magnetic core provided in accordance with one embodiment of the present invention;
FIG. 2 is a structural view of a magnetic core provided in accordance with one embodiment of the present invention;
FIG. 3 is a structural view of a magnetic core provided in accordance with one embodiment of the present invention;
FIG. 4 is a structural view of a magnetic core provided in accordance with one embodiment of the present invention;
FIG. 5 is a structural view of a magnetic core provided in accordance with one embodiment of the present invention;
FIG. 6 is a structural view of a magnetic core provided in accordance with one embodiment of the present invention;
FIG. 7 is a structural view of a magnetic core provided in accordance with one embodiment of the present invention;
FIG. 8 is a schematic circuit diagram of a voltage conversion circuit using a magnetic core or magnetic integrated device provided by one embodiment of the present invention;
FIG. 9 is a structural view of a magnetically integrated device provided by one embodiment of the present invention;
fig. 10 is a flowchart of a method for manufacturing a magnetic integrated device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be understood that in the description of the embodiments of the present invention, a plurality or a plurality of items means two or more, less, more, etc. are understood as excluding the number, and more, less, more, etc. are understood as including the number. If the description of "first", "second", etc. is used for the purpose of distinguishing technical features, it is not intended to indicate or imply relative importance or to implicitly indicate the number of indicated technical features or to implicitly indicate the precedence of the indicated technical features.
Magnetic devices, such as transformers and inductors for short, are widely used in the fields of power electronic power conversion, switching power supplies, variable frequency air conditioning systems, and the like, and are also important components of the switching power supplies. The magnetic component is the primary device that performs energy storage and conversion, filtering, and electrical isolation, and can affect the overall performance of the converter in a number of ways.
On the one hand, the magnetic member is the main factor influencing the volume and weight of the transducer, and according to statistics, the weight of the magnetic member is generally 30-40% of the total weight of the transducer, the volume accounts for 20-30% of the total volume, and for a power supply which works at high frequency and is designed in a modular manner, the proportion of the volume and the weight of the magnetic member is higher than the data given above. On the other hand, the selection of the magnetic part parameters such as the size of the output filter inductor directly affects the output current ripple and the output dynamic performance of the power supply. In yet another aspect, losses in the magnetic member can affect the efficiency of the converter.
If a plurality of magnetic devices are mutually independent, the occupied volume is large, and the layout of other elements on the circuit board can be seriously influenced. And because the volume of magnetic device can not be done for a short time, can seriously influence the power density of whole power module, simultaneously, the cost of a plurality of independent magnetic devices is very high, and the loss of magnetic core and winding copper loss are all great.
In order to reduce the volume and weight of the magnetic member and improve the filtering performance of the magnetic device, one way is to increase the frequency of the alternating current, but the high-frequency way still has certain limitations, and is not applicable to all scenes. In order to further reduce the volume and loss of the Magnetic element and ensure good performance of the converter, a Magnetic Integrated Magnetic (IM) technology can be adopted. Magnetic integration technology, that is, the design of a magnetic core structure by using a single magnetic piece, enables magnetic fluxes generated by two different magnetic pieces to interact: either strengthened or weakened. The technology integrates the two magnetic pieces together, thereby achieving the purposes of reducing the volume of the magnetic pieces and reducing the cost.
In order to realize the magnetic integration technology and enable a magnetic integration device after magnetic integration to meet the use performance of a circuit, the magnetic core structure needs to be designed in a targeted mode. Meanwhile, the volume of the existing magnetic integrated device is still large, and the wiring design of a circuit board is difficult.
An embodiment of the present invention provides a magnetic core, which, as shown in fig. 1, includes:
a core body including two annular core portions arranged side by side, a first core portion 110 and a second core portion 120, respectively, the second core portion 120 being arranged below the first core portion 110, the core body including a first core assembly 130 sharing a magnetic path by the first core portion 110 and the second core portion 120;
the insert magnetic core assembly is used for winding coils;
the first magnetic core part 110 and/or the second magnetic core part 120 are inserted with the magnetic core insert assembly, and air gaps are formed between two ends of the magnetic core insert assembly and the annular magnetic core part where the magnetic core insert assembly is located.
Referring to fig. 1, the first core portion 110 is disposed below the second core portion 120, which is equivalent to the first core portion 110 being at an upper layer and the second core portion 120 being at a lower layer, and since the first core portion 110 and the second core portion 120 are both annular core portions, that is, the first core portion 110 and the second core portion 120 are both annular in shape, a first closed magnetic path is formed in the first core portion 110, and a second closed magnetic path is formed in the second core portion 120, where the first closed magnetic path and the second closed magnetic path both share the first core assembly 130. It is understood that the first magnetic core assembly 130 may be part of both the first magnetic core portion 110 and the second magnetic core portion 120. It can also be understood that the first magnetic core assembly 130 is a part of the second magnetic core assembly 120, the other parts of the first magnetic core assembly 110 except the first magnetic core assembly 130 form the first magnetic core 110 together with the first magnetic core assembly 130, the first magnetic core assembly 130 serves as a magnetic conducting part of both the first closed magnetic circuit and the second closed magnetic circuit, the first magnetic core 110 and the second magnetic core 120 may be wound with windings of the same or different types, for example, the first magnetic core 110 on the upper layer may be wound with a first winding, the second magnetic core 120 on the lower layer may be wound with a second winding, and the first winding and the second winding may be a single coil winding, such as a filter inductor winding, an energy storage inductor winding, or a differential mode inductor winding. The first winding and the second winding may also be a dual coil winding, such as a common mode inductor winding or a transformer winding. Through first magnetic core portion 110 and second magnetic core portion 120, realized that the magnetic device that will originally separate is integrated together, can effectively reduce the volume of magnetic core and magnetic integrated device, reduction in production cost, owing to have upper and lower two-layer distribution structure, can reduce the area of magnetic device on the circuit board, can be convenient for the wiring of circuit board. In addition, because the magnetic core in the embodiment of the invention is of an upper-layer three-dimensional structure and a lower-layer three-dimensional structure, the occupied area of the magnetic core on the circuit board can be effectively reduced, and the wiring design of the electric control circuit board is further facilitated.
The first core portion 110 or the second core portion 120 is inserted with the magnetic insert core assembly, and the magnetic insert core assembly and the magnetic core main body are separately arranged, that is, the magnetic insert core assembly can be inserted into the first core portion 110 or the second core portion 120, or two magnetic insert core assemblies can be respectively inserted into the first core portion 110 and the second core portion 120. The magnetic core insert assembly is used for winding coils, when the magnetic core insert assembly is inserted into the first magnetic core part 110 on the upper layer, the first winding corresponding to the first magnetic core part 110 can be wound in the magnetic core insert assembly, and similarly, when the magnetic core insert assembly is inserted into the second magnetic core part 120 on the lower layer, the second winding corresponding to the second magnetic core part 120 can be wound in the magnetic core insert assembly. Through inserted sheet magnetic core assembly, in the magnetic device in-process of making, can carry out the coil wire winding with inserted sheet magnetic core assembly earlier, then insert inserted sheet magnetic core assembly in the annular magnetic core portion of magnetic core main part, for example insert foretell first magnetic core portion 110 or second magnetic core portion 120, the automated production that can be convenient for realize magnetic device like this, the reduction production degree of difficulty, the production efficiency is improved, can effectively reduce manufacturing cost, in addition, because coil winding can wind and establish in inserted sheet magnetic core assembly, consequently, can reduce the width of annular magnetic core portion both sides, further reduce the volume of magnetic core.
Because inserted sheet magnetic core subassembly sets up in annular magnetic core portion through the mode of pegging graft, can conveniently form the air gap, this air gap can avoid magnetic core saturation phenomenon of magnetic device, and is favorable to promoting the homogeneity of inductance value.
For energy storage or filtering magnetic devices, there is a need for energy storage, but as the magnetic field strength in the magnetic material increases, its magnetic flux density also increases, but when the magnetic field strength is large to some extent, its magnetic flux no longer increases, which is called magnetic saturation, which affects the ability of the magnetic core to store energy. To avoid saturation of the core, an air gap is added to the core to withstand a large dc flux. Foretell design can be convenient for integrate the coil winding of different grade type, because the height of inserted sheet magnetic core subassembly very conveniently processes the regulation, when integrated different grade type coil winding, only need adjust the height of inserted sheet magnetic core subassembly according to integrated magnetic device's characteristic, can form required air gap height very conveniently, and need not to carry out special design to the magnetic core main part, and processing production is very convenient.
Referring to fig. 1, a core insert assembly is inserted into a first core portion 110, and the core insert assembly inserted into the first core portion 110 is a first core center pillar 140, and it can be seen that the core body in fig. 1 has only the first core center pillar 140 inserted into the first core portion 110, wherein the first core center pillar 140 is used for a first winding to wind around, and a second winding can wind around the side pillars at two sides of the second core portion 120. A first air gap 150 is formed between each end of the first core leg 140 and the first core portion 110. Because first magnetic core center pillar 140 and first magnetic core portion 110 set up respectively, consequently only need confirm the height of first magnetic core center pillar 140, can set up the height of first air gap 150, when the height when the integrated requirement of magnetic device when needing according to the difference changes first air gap 150, need not to adjust the parameter of magnetic core main part and can design the magnetic device of different demands, consequently the magnetic core main part only need adopt general magnetic core subassembly can, can effectively reduce manufacturing cost like this. Referring to fig. 1, the first core portion 110 and the second core portion 120 are integrally connected, that is, the core body is an 8-shaped core, and thus includes two layers of upper and lower annular core portions, the upper end of the 8-shaped core is the first core portion 110 to form a first closed magnetic circuit, the lower end is the second core portion 120 to form a second closed magnetic circuit, the first core assembly 130 is disposed in the middle of the 8-shaped core, the integrally formed core body can reduce the assembly cost, and a conventional core assembly can be used, which is convenient for purchasing and contributes to reducing the production cost. A first core center leg 140 is inserted into a space surrounded by the first core portion 110 of the upper layer of the 8-shaped core. Therefore, when the magnetic integrated device is produced, the coil winding can be wound around the first core center pillar 140 and then inserted into the first core portion 110, which can reduce the production difficulty and improve the production efficiency.
The core body shown in fig. 1 may be provided separately, and as shown in fig. 2, the core body includes a second core assembly 210 and a second core portion 120, the second core portion 120 is a square core assembly and forms a second closed magnetic path, a side column on the upper side thereof is the first core assembly 130, and the second core assembly 210 and the first core assembly 130 constitute the first core portion 110. Referring to fig. 2, the second magnetic core assembly 210 includes a first side pillar 211 and second side pillars 212 disposed at both sides of the first side pillar 211, and the first side pillar 211, the second side pillars 212 at both sides, and the first magnetic core assembly 130 form the first magnetic core portion 110, forming a first closed magnetic circuit. A fourth air gap 220 is formed between second side leg 212 and first magnetic core assembly 130. The first side column 211 and the second side columns 212 disposed at both sides of the first side column 211 integrally form a U-shaped magnetic core. The first core leg 140 is inserted into the U-shaped core, and as the leg of the U-shaped core, the first winding corresponding to the first core part 110 may be wound around the first core leg 140, so that the width of the second leg 212 on both sides of the first leg 211 may be reduced, resulting in a reduced volume of the core.
The fourth air gap 220 formed between the second side pillar 212 and the first magnetic core assembly 130 is beneficial to improving the uniformity of inductance of the magnetic device. In addition, since the first core center leg 140 and the first leg 211 and the first core assembly 130 are formed with the first air gap 150, respectively, the heights of the first air gap 150 and the fourth air gap 220 can be reduced because of the presence of the first air gap 150 and the fourth air gap 220. The magnetic flux leaking from the air gap is equivalent to a semicircle or an arch taking the height of the air gap as a straight side on the cross section of the magnetic core, so the cross section area of the leaking magnetic flux is increased by a square multiple along with the increase of the height of the air gap, and is increased by a cubic multiple for an actual three-dimensional space. Therefore, since the two first air gaps 150 and the four air gaps 220 are provided, the height of each air gap can be reduced, and the magnetic flux area of the leakage flux can be greatly reduced, the eddy current loss of the magnetic device can be reduced, and the magnetic interference with the periphery of the magnetic core can be reduced while maintaining the same performance as that of a single air gap with a large gap.
Referring to fig. 3, in addition to the magnetic core of fig. 2, a third core leg 310 may be provided in the second core portion 120, and both ends of the third core leg 310 may be integrally connected to the second core portion 120. By providing the third core center pillar 310 in the second core portion 120, the second winding corresponding to the second core portion 120 can be wound around the third core center pillar 310, so that the width of the two sides of the second core portion 120 can be reduced, the volume of the second core assembly 210 can be further reduced, and the cost can be further reduced. Wherein the both ends of third magnetic core center pillar 310 link into an integrated entity with second magnetic core portion 120 respectively, and second magnetic core portion 120 is the 8 font magnetic core that crouches down promptly, consequently can use general 8 font magnetic core components, can effectively reduce manufacturing cost, the large-scale automated production of being convenient for.
Referring to fig. 4, the core body includes a second core assembly 210 and a second core portion 120, the second core portion 120 is a square core assembly, the square core assembly includes a first side pillar 211 and second side pillars 212 disposed at both sides of the first side pillar 211, and the first side pillar 211, the two second side pillars 212, and the first core assembly 130 on the upper side of the second core portion 120 constitute the first core portion 110. Referring to fig. 4, only the second core portion 120 is inserted with the magnetic core insert assembly, the magnetic core insert assembly inserted into the second core portion 120 is a second core center pillar 410, the second core center pillar 410 is perpendicular to the second core assembly 210, and a second air gap 420 is formed between two ends of the second core center pillar 410 and the second core portion 120. The second core leg 410 is used for winding a second winding, and the first winding can be wound at any position in the second core assembly 210. The both ends of second magnetic core center pillar 410 respectively with second magnetic core portion 120 between form second air gap 420, because second magnetic core center pillar 410 and second magnetic core portion 120 set up respectively, consequently only need confirm the height of second magnetic core center pillar 410, can set up the height of second air gap 420, when the height when the integrated requirement of magnetic device when needing according to the difference changes second air gap 420, need not to adjust the parameter of magnetic core main part and can design the magnetic device of different demands, consequently the magnetic core main part only need adopt general magnetic core subassembly can, can effectively reduce manufacturing cost like this. When the magnetic integrated device is produced, the coil winding can be wound on the second magnetic core middle column 410 and then inserted into the second magnetic core part 120, so that the production difficulty can be reduced, and the production efficiency can be improved. Since the second winding is wound around the second core center leg 410, the width of the leg on both sides of the second core portion 120 can be reduced, enabling further reduction in the volume of the core.
Referring to fig. 5, in addition to the magnetic core shown in fig. 4, a fourth magnetic core center leg 510 is added to the second magnetic core assembly 210, wherein the fourth magnetic core center leg 510 is integrally connected to the first side leg 211 of the second magnetic core assembly 210, and the fourth magnetic core center leg 510 is perpendicular to the first side leg 211 and parallel to the second side leg 212, so that the second magnetic core assembly 210 is an E-shaped magnetic core assembly. The first winding of the upper layer can be wound on the fourth magnetic core center pillar 510, so that the width of the two sides of the first side pillar 211 can be reduced, the volume of the first magnetic core part 110 can be further reduced, and the cost can be further reduced. The universal E-shaped magnetic core component can be used, so that the production cost can be effectively reduced, and the large-scale automatic production is facilitated. Referring to fig. 5, a third air gap 520 is formed between the fourth core leg 510 and the first core assembly 130. The third air gap 520 is arranged on the fourth magnetic core, so that the uniformity of inductance of the magnetic device is improved.
Referring to fig. 6, each of the first core portion 110 and the second core portion 120 of the core main body is inserted with a magnetic core insert assembly, wherein the magnetic core insert assembly inserted into the first core portion 110 is a first core leg 140, the magnetic core insert assembly inserted into the second core portion 120 is a second core leg 410, two ends of the first core leg 140 respectively form a first air gap 150 with the first core portion 110, and two ends of the second core leg 410 respectively form a second air gap 420 with the second core portion 120. Since the first and second core legs 140 and 410 are plug-in connected to the core body, the first and second core legs 110 and 120 may be inserted into the core body after the coil windings are wound around the first and second core legs 140 and 410, respectively, when the magnetic device is manufactured. Therefore, the production difficulty can be reduced, the automatic production is convenient, and the production efficiency is improved. Meanwhile, the heights of the first air gap 150 in the first core part 110 and the second air gap 420 in the second core part 120 can be determined only by setting the heights of the first and second core legs 140 and 410. The magnetic devices with different requirements can be designed without adjusting the parameters of the magnetic core main body, so that the magnetic core main body only needs to adopt a universal magnetic core component, the production cost can be effectively reduced, and the large-scale automatic production is facilitated.
Referring to fig. 6, the first core portion 110 and the second core portion 120 are integrally formed, for example, a 8-shaped core assembly is used as a core main body, the upper end of the 8-shaped core assembly is the first core portion 110, and the lower end is the second core portion 120. The first core part 110 and the second core part 120 are integrally connected, and the integrally formed magnetic core main body can reduce the assembly cost, and a conventional magnetic core component can be adopted, so that the purchase is convenient, and the production cost is reduced.
The core body shown in fig. 6 may be provided separately, and as shown in fig. 7, the core body includes a second core assembly 210 and a second core portion 120, the second core portion 120 is a square core assembly and forms a second closed magnetic path, a side column on the upper side thereof is the first core assembly 130, and the second core assembly 210 and the first core assembly 130 constitute the first core portion 110. Referring to fig. 7, the second magnetic core assembly 210 includes a first side pillar 211 and second side pillars 212 disposed at both sides of the first side pillar 211, and the first side pillar 211, the second side pillars 212 at both sides, and the first magnetic core assembly 130 form the first magnetic core portion 110, forming a first closed magnetic circuit. A fourth air gap 220 is formed between second side leg 212 and first magnetic core assembly 130. The first side column 211 and the second side columns 212 disposed at both sides of the first side column 211 integrally form a U-shaped magnetic core. The first core leg 140 is inserted into the U-shaped core, and as the leg of the U-shaped core, the first winding corresponding to the first core part 110 may be wound around the first core leg 140, so that the width of the second leg 212 on both sides of the first leg 211 may be reduced, resulting in a reduced volume of the core.
The embodiment of the invention provides a magnetic integrated device, which comprises the magnetic core mentioned in any embodiment and a coil winding, wherein the coil winding is wound on the insert magnetic core component. Because inserted sheet magnetic core assembly inserts and sets up in the annular magnetic core portion of magnetic core main part, consequently can insert again in the annular magnetic core portion of magnetic core main part on inserted sheet magnetic core assembly on production after establishing coil winding, can be convenient for realize the automated production of magnetism integrated device, reduce the production degree of difficulty, improve production efficiency, can effectively reduction in production cost. Because inserted sheet magnetic core subassembly sets up in annular magnetic core portion through the mode of pegging graft, can conveniently form the air gap, this air gap can avoid the magnetic core saturation phenomenon of magnetism integrated device, can conveniently set up the height of air gap between inserted sheet magnetic core subassembly and the annular magnetic core portion moreover when designing and add man-hour, convenient processing production. In addition, the magnetic core of the magnetic integrated device comprises a first magnetic core part 110 and a second magnetic core part 120, the first magnetic core part 110 and the second magnetic core part 120 adopt upper and lower two-layer distribution structures for winding different windings respectively, so that the originally separated magnetic integrated devices are integrated together, the volumes of the magnetic core and the magnetic integrated device can be effectively reduced, the production cost is reduced, and the area of the magnetic integrated device on a circuit board can be reduced due to the upper and lower two-layer distribution structures, so that the wiring of the circuit board can be facilitated. Since the first magnetic core part 110 and the second magnetic core part 120 have the first magnetic core assembly 130 sharing a magnetic circuit, the size of the magnetic core and the magnetic core device using the magnetic core can be further reduced, which is beneficial to the wiring design of the electronic control circuit board and the miniaturization design of the electronic control circuit board, the electronic control box and the like.
The magnetic integrated device integrates the first winding 910 and the second winding 920, wherein a magnetic core as shown in fig. 1 to 3 can be used, and the magnetic core insert assembly is inserted only into the first magnetic core portion 110, that is, the first magnetic core center pillar 140 is inserted into the first magnetic core portion 110. Thus, the first winding 910 is wound around the first leg 140, and the second winding 920 is wound around the second core portion 120. It is also possible to use the magnetic core shown in fig. 4 to 5, in which the tab core assembly is inserted only in the second core portion 120, i.e., the second core leg 410 is inserted in the second core portion 120. Thus, the first winding 910 is wound around the first core portion 110, and the second winding 920 is wound around the second core leg 410. It is also possible to use the magnetic core shown in fig. 6 to 7, in which the core insert assemblies are inserted into the first core portion 110 and the second core portion 120, respectively, that is, the first core leg 140 is inserted into the first core portion 110, and the second core leg 410 is inserted into the second core portion 120, so that the first winding 910 is wound around the first core leg 140 in the first core portion 110, and the second winding 920 is wound around the second core leg 410 in the second core portion 120.
Referring to fig. 8, for an application of the magnetic integrated device, fig. 8 shows a schematic circuit diagram of a voltage conversion circuit, which includes an ac input terminal 810 for inputting an ac electrical signal, a common mode inductor LF for filtering harmonic interference of the ac electrical signal, and a transformer T for performing voltage conversion on the ac electrical signal with common mode noise and harmonic interference being filtered by the common mode inductor LF. The common mode inductor LF and the transformer T in the prior art are two independent magnetic devices, and the total volume of the magnetic devices is large, so that the occupied area of the magnetic devices on a circuit board is large, and miniaturization of products is not facilitated. Referring to fig. 9, the magnetic core of the magnetic integrated device provided by the present invention is the magnetic core shown in fig. 2, the magnetic core shown in fig. 9 includes a second magnetic core assembly 210 and a second magnetic core portion 120, the second magnetic core portion 120 is a square magnetic core assembly, the second magnetic core assembly 210 includes a first side pillar 211 and second side pillars 212 disposed on two sides of the first side pillar 211, and a fourth air gap 220 is formed between the second side pillar 212 and the first magnetic core assembly 130. The first side column 211 and the second side columns 212 disposed at both sides of the first side column 211 integrally form a U-shaped magnetic core assembly. The second magnetic member includes a first magnetic core member 130, a first magnetic core center leg 140 is disposed between the first side leg 211 and the first magnetic core member 130, and the first magnetic core center leg 140, the first side leg 211 and the first magnetic core member 130 form a first air gap 150. The first winding 910 of the transformer T in the voltage conversion circuit is wound around the first magnetic core center pillar 140, and the second winding 920 of the common mode inductor is wound around the two side pillars of the second magnetic core portion 120. It can be seen that the magnetic core of the magnetic integrated device shown in fig. 9 is composed of a U-shaped magnetic core assembly, an I-shaped magnetic core assembly and a square magnetic core assembly, wherein the I-shaped magnetic core assembly is used as the first magnetic core middle column 140, since the I-shaped magnetic core assembly and the square magnetic core assembly can be wound by the existing mature automatic winding equipment, during production, only the square magnetic core assembly needs to be wound with the second winding 920 of the common mode inductor, the first winding 910 of the transformer T is wound on the I-shaped magnetic core assembly, then the I-shaped magnetic core assembly is inserted into the first magnetic core portion 110, namely, installation can be completed between the first side column 211 and the first magnetic core assembly 130, the production is convenient, the automated production of the magnetic integrated device can be conveniently realized, the production difficulty is reduced, the production efficiency is improved, and the production cost can be effectively reduced. Because inserted sheet magnetic core subassembly sets up in annular magnetic core portion through the mode of pegging graft, can conveniently form the air gap, this air gap can avoid the magnetic core saturation phenomenon of magnetism integrated device, can conveniently set up the height of air gap between inserted sheet magnetic core subassembly and the annular magnetic core portion moreover when designing and add man-hour, convenient processing production, reduction in production cost.
The embodiment of the invention provides a circuit board which comprises the magnetic integrated device provided by any one of the embodiments. Because the magnetism integrated device has upper and lower two-layer distribution's first magnet core portion 110 and second magnet core portion 120 to supply the winding of different grade type to wind and establish, realized with the magnetism integrated device integration that originally separates together, can effectively reduce the volume of magnetic core and magnetism integrated device, reduction in production cost, owing to have upper and lower two-layer distribution structure, can reduce the area of magnetism integrated device on the circuit board, can be convenient for the wiring of circuit board. Since the first magnetic core part 110 and the second magnetic core part 120 have the first magnetic core assembly 130 sharing a magnetic circuit, the size of the magnetic core and the magnetic core device using the magnetic core can be further reduced, which is beneficial to the wiring design of the electronic control circuit board and the miniaturization design of the electronic control circuit board, the electronic control box and the like. In addition, because the inserted sheet magnetic core subassembly of magnetism integrated device inserts and sets up in the annular magnetic core portion of magnetic core main part, consequently can insert the annular magnetic core portion of magnetic core main part again after establishing first winding on inserted sheet magnetic core subassembly earlier when production, can be convenient for realize the automated production of magnetism integrated device, reduce the production degree of difficulty, improve production efficiency, can effectively reduce manufacturing cost. Because inserted sheet magnetic core subassembly sets up in annular magnetic core portion through the mode of pegging graft, can conveniently form the air gap, this air gap can avoid the magnetic core saturation phenomenon of magnetism integrated device, can conveniently set up the height of air gap between inserted sheet magnetic core subassembly and the annular magnetic core portion moreover when designing and add man-hour, convenient processing production, reduction in production cost.
The embodiment of the invention provides a household appliance, which comprises the circuit board provided by any one of the embodiments, for example, an air conditioner using the circuit board, wherein the magnetic integration device adopted by the circuit board is provided with a first magnetic core part 110 and a second magnetic core part 120 which are distributed in an upper layer and a lower layer, so that windings of different types are wound, the originally separated magnetic integration device is integrated, the volumes of a magnetic core and the magnetic integration device can be effectively reduced, the production cost is reduced, and the area of the magnetic integration device on the circuit board can be reduced due to the distribution structure of the upper layer and the lower layer, so that the wiring of the circuit board can be facilitated. Since the first magnetic core part 110 and the second magnetic core part 120 have the first magnetic core assembly 130 sharing a magnetic circuit, the size of the magnetic core and the magnetic core device using the magnetic core can be further reduced, which is beneficial to the wiring design of the electronic control circuit board and the miniaturization design of the electronic control circuit board, the electronic control box and the like. In addition, because the inserted sheet magnetic core subassembly of magnetism integrated device inserts and sets up in the annular magnetic core portion of magnetic core main part, consequently can insert the annular magnetic core portion of magnetic core main part again after establishing first winding on inserted sheet magnetic core subassembly earlier when production, can be convenient for realize the automated production of magnetism integrated device, reduce the production degree of difficulty, improve production efficiency, can effectively reduce manufacturing cost. Because inserted sheet magnetic core subassembly sets up in annular magnetic core portion through the mode of pegging graft, can conveniently form the air gap, this air gap can avoid the magnetic core saturation phenomenon of magnetism integrated device, can conveniently set up the height of air gap between inserted sheet magnetic core subassembly and the annular magnetic core portion moreover when designing and add man-hour, convenient processing production, reduction in production cost.
Referring to fig. 10, a method for manufacturing a magnetic integrated device according to an embodiment of the present invention is provided for manufacturing the magnetic integrated device, where the method includes, but is not limited to, the following steps:
The magnetic core body may be any one of the magnetic cores shown in fig. 1 to 7, and includes two annular magnetic core portions arranged side by side, namely, a first magnetic core portion 110 and a second magnetic core portion 120, the second magnetic core portion 120 is arranged below the first magnetic core portion 110, and the first magnetic core assembly 130 includes a first magnetic core assembly 130 sharing a magnetic path by the first magnetic core portion 110 and the second magnetic core portion 120.
And step 1020, obtaining an insert magnetic core assembly, and winding a coil winding on the insert magnetic core assembly. The magnetic core insert component can be any one of the magnetic cores shown in fig. 1 to 7. If the magnetic core shown in fig. 1 to 3 is adopted, the obtained insert magnetic core assembly is the first magnetic core center pillar 140, and the first winding is wound in the first magnetic core center pillar 140. If the magnetic core shown in fig. 4 to 5 is adopted, the obtained insert magnetic core assembly is the second magnetic core center pillar 410, and the second winding is wound in the second magnetic core center pillar 410. In the case of the magnetic core shown in fig. 6 to 7, since the first core portion 110 and the second core portion 120 are inserted with the core insert assembly, the first core leg 140 and the second core leg 410 are respectively obtained, the first winding is wound in the first core leg 140, and the second winding is wound in the second core leg 410. It is understood that the first and second core legs 140, 410 may be I-shaped core assemblies, and thus may be conveniently wound using automated winding equipment, such as a coil winding machine.
At step 1030, the magnetic core insert assembly with the wound coil winding is inserted into the first core portion 110 or the second core portion 120. In the case of the magnetic core shown in fig. 1 to 3, only the first core leg 140 around which the wire is wound needs to be inserted into the first core portion 110, in the case of the magnetic core shown in fig. 4 to 6, only the second core leg 410 around which the wire is wound needs to be inserted into the second core portion 120, and in the case of the magnetic core shown in fig. 6 to 7, the first core leg 140 around which the wire is wound and the second core leg 410 need to be inserted into the first core portion 110 and the second core portion 120, respectively.
Because inserted sheet magnetic core subassembly and magnetic core main part disconnect-type set up, inserted sheet magnetic core subassembly can insert and set up in the annular magnetic core portion of magnetic core main part, consequently when the integrated device of preparation magnetism, inserts again in the annular magnetic core portion of magnetic core main part after establishing coil winding on inserted sheet magnetic core subassembly at first, can be convenient for realize the automated production of the integrated device of magnetism, the reduction in production degree of difficulty improves production efficiency, can effectively reduction in production cost. Because inserted sheet magnetic core subassembly sets up in annular magnetic core portion through the mode of pegging graft, can conveniently form the air gap, this air gap can avoid the magnetic core saturation phenomenon of magnetism integrated device, can conveniently set up the height of air gap between inserted sheet magnetic core subassembly and the annular magnetic core portion moreover when designing and add man-hour, convenient processing production. The magnetic integrated device manufactured by the manufacturing method of the magnetic integrated device provided by the embodiment of the invention comprises the first magnetic core part 110 and the second magnetic core part 120, wherein the first magnetic core part 110 and the second magnetic core part 120 adopt the upper and lower layer distribution structures and are respectively wound by different windings, so that the originally separated magnetic integrated devices are integrated together, the volumes of the magnetic core and the magnetic integrated device can be effectively reduced, the production cost is reduced, and the area of the magnetic integrated device on a circuit board can be reduced due to the upper and lower layer distribution structures, thereby being convenient for wiring of the circuit board. Since the first magnetic core part 110 and the second magnetic core part 120 have the first magnetic core assembly 130 sharing a magnetic circuit, the size of the magnetic core and the magnetic core device using the magnetic core can be further reduced, which is beneficial to the wiring design of the electronic control circuit board and the miniaturization design of the electronic control circuit board, the electronic control box and the like.
It should also be appreciated that the various implementations provided by the embodiments of the present invention can be combined arbitrarily to achieve different technical effects.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
Claims (14)
1. A magnetic core, comprising:
a magnetic core main body including two annular magnetic core portions arranged side by side, a first magnetic core portion and a second magnetic core portion respectively, the second magnetic core portion being arranged below the first magnetic core portion, the magnetic core main body including a first magnetic core assembly in which a magnetic path is shared by the first magnetic core portion and the second magnetic core portion;
the insert magnetic core assembly is used for winding coils;
the first magnetic core part and/or the second magnetic core part are/is inserted with the inserting sheet magnetic core component, and air gaps are formed between two ends of the inserting sheet magnetic core component and the annular magnetic core part where the inserting sheet magnetic core component is located.
2. A magnetic core according to claim 1, wherein the magnetic core insert assembly is inserted into the first magnetic core portion, the magnetic core insert assembly inserted into the first magnetic core portion is a first magnetic core pillar, and a first air gap is formed between two ends of the first magnetic core pillar and the first magnetic core portion.
3. A magnetic core according to claim 1, wherein the second magnetic core portion is inserted with the magnetic core insert assembly, the magnetic core insert assembly inserted into the second magnetic core portion is a second magnetic core center pillar, and a second air gap is formed between two ends of the second magnetic core center pillar and the second magnetic core portion.
4. The magnetic core according to claim 1, wherein the first core portion and the second core portion are respectively inserted with the magnetic core insert assembly, the magnetic core insert assembly inserted into the first core portion is a first magnetic core center pillar, the magnetic core insert assembly inserted into the second core portion is a second magnetic core center pillar, a first air gap is formed between two ends of the first magnetic core center pillar and the first core portion, and a second air gap is formed between two ends of the second magnetic core center pillar and the second core portion.
5. A magnetic core according to any of claims 1 to 4, characterized in that the first core part and the second core part are integrally connected.
6. A magnetic core according to claim 2, wherein a third leg is provided in the second core portion, and both ends of the third leg are integrally connected to the second core portion.
7. A magnetic core according to claim 3, wherein the magnetic core main body comprises a second magnetic core member, the second magnetic core member and the first magnetic core member constitute the first magnetic core portion, a fourth magnetic core center pillar is provided in the first magnetic core portion, and the fourth magnetic core center pillar is integrally connected to the second magnetic core member.
8. A magnetic core according to claim 7, wherein a third air gap is formed between the fourth leg and the first core assembly.
9. A magnetic core according to any of claims 1 to 4 and 6 to 8, wherein the magnetic core body comprises a second magnetic core component, the second magnetic core component and the first magnetic core component constitute the first magnetic core, the second magnetic core component comprises a first side pillar and a second side pillar disposed on both sides of the first side pillar, the second side pillar and the first magnetic core component constitute the first magnetic core, and a fourth air gap is formed between the second side pillar and the first magnetic core component.
10. A magnetically integrated device comprising the magnetic core of any one of claims 1 to 9, and further comprising a coil winding disposed around the blade core assembly.
11. A wiring board comprising the magnetically integrated device of claim 10.
12. A household appliance comprising the wiring board of claim 11.
13. A method of fabricating a magnetically integrated device, for fabricating the magnetically integrated device of claim 10, the method comprising the steps of:
obtaining a magnetic core main body, wherein the magnetic core main body comprises two annular magnetic core parts arranged side by side, namely a first magnetic core part and a second magnetic core part, the second magnetic core part is arranged below the first magnetic core part, and the magnetic core main body comprises a first magnetic core assembly of which a magnetic circuit is shared by the first magnetic core part and the second magnetic core part;
obtaining an insert magnetic core assembly, and winding a coil winding on the insert magnetic core assembly;
inserting the tab magnetic core assembly wound with the coil winding into the first magnetic core portion or the second magnetic core portion.
14. The method of claim 13, wherein winding a coil winding on the tab core assembly comprises:
and automatic winding equipment is adopted to wind the coil winding on the inserting sheet magnetic core component.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112927901A (en) * | 2021-03-05 | 2021-06-08 | 深圳市航嘉驰源电气股份有限公司 | Magnetic core structure and device |
| CN114551377A (en) * | 2022-04-24 | 2022-05-27 | 杭州飞仕得科技有限公司 | IGBT (insulated Gate Bipolar transistor) driving packaging structure and manufacturing method |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1391333A (en) * | 2001-06-08 | 2003-01-15 | 台达电子工业股份有限公司 | Differential mode and common mode integrated filter |
| CN101308724A (en) * | 2007-02-17 | 2008-11-19 | 浙江大学 | Magnet integrate construction of transformer and inductor |
| JP2010016234A (en) * | 2008-07-04 | 2010-01-21 | Hitachi Ferrite Electronics Ltd | Choke coil for interleave-controlled power factor correction circuit |
| CN101777414A (en) * | 2010-01-21 | 2010-07-14 | 横店集团东磁股份有限公司 | Integral inductor and manufacturing method thereof |
| CN202549596U (en) * | 2011-12-30 | 2012-11-21 | 东软飞利浦医疗设备系统有限责任公司 | Resonant inductor and high-voltage transformer magnetic integration device |
| CN202632935U (en) * | 2012-05-16 | 2012-12-26 | 上海兆启新能源科技有限公司 | Magnetic integration reactor |
| CN103594242A (en) * | 2013-11-12 | 2014-02-19 | 上海华源磁业有限公司 | Manufacturing method for soft magnetic ferrite core shaped like Chinese character 'ri' |
| CN104966604A (en) * | 2014-07-24 | 2015-10-07 | 深圳市盛弘电气股份有限公司 | Magnetic assembly and method for winding coils of winding thereof |
| CN105118622A (en) * | 2015-10-15 | 2015-12-02 | 联想(北京)有限公司 | Electromagnetic element, inductance coil, transformer and switching mode power supply |
| CN106057401A (en) * | 2015-04-10 | 2016-10-26 | 台达电子工业股份有限公司 | Magnetic element and magnetic core thereof |
| CN205882764U (en) * | 2016-07-13 | 2017-01-11 | 深圳市魔翼科技有限公司 | Wireless charging equipment |
| US20180323720A1 (en) * | 2017-05-08 | 2018-11-08 | Delta Electronics (Thailand) Public Co., Ltd. | Integrated magnetic component and power converter |
| CN110212784A (en) * | 2019-06-20 | 2019-09-06 | 湘潭大学 | A kind of passive element integrating device for single-phase three-level AC process resonance converter |
-
2020
- 2020-10-16 CN CN202011112664.9A patent/CN112233886B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1391333A (en) * | 2001-06-08 | 2003-01-15 | 台达电子工业股份有限公司 | Differential mode and common mode integrated filter |
| CN101308724A (en) * | 2007-02-17 | 2008-11-19 | 浙江大学 | Magnet integrate construction of transformer and inductor |
| JP2010016234A (en) * | 2008-07-04 | 2010-01-21 | Hitachi Ferrite Electronics Ltd | Choke coil for interleave-controlled power factor correction circuit |
| CN101777414A (en) * | 2010-01-21 | 2010-07-14 | 横店集团东磁股份有限公司 | Integral inductor and manufacturing method thereof |
| CN202549596U (en) * | 2011-12-30 | 2012-11-21 | 东软飞利浦医疗设备系统有限责任公司 | Resonant inductor and high-voltage transformer magnetic integration device |
| CN202632935U (en) * | 2012-05-16 | 2012-12-26 | 上海兆启新能源科技有限公司 | Magnetic integration reactor |
| CN103594242A (en) * | 2013-11-12 | 2014-02-19 | 上海华源磁业有限公司 | Manufacturing method for soft magnetic ferrite core shaped like Chinese character 'ri' |
| CN104966604A (en) * | 2014-07-24 | 2015-10-07 | 深圳市盛弘电气股份有限公司 | Magnetic assembly and method for winding coils of winding thereof |
| CN106057401A (en) * | 2015-04-10 | 2016-10-26 | 台达电子工业股份有限公司 | Magnetic element and magnetic core thereof |
| CN105118622A (en) * | 2015-10-15 | 2015-12-02 | 联想(北京)有限公司 | Electromagnetic element, inductance coil, transformer and switching mode power supply |
| CN205882764U (en) * | 2016-07-13 | 2017-01-11 | 深圳市魔翼科技有限公司 | Wireless charging equipment |
| US20180323720A1 (en) * | 2017-05-08 | 2018-11-08 | Delta Electronics (Thailand) Public Co., Ltd. | Integrated magnetic component and power converter |
| CN110212784A (en) * | 2019-06-20 | 2019-09-06 | 湘潭大学 | A kind of passive element integrating device for single-phase three-level AC process resonance converter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112927901A (en) * | 2021-03-05 | 2021-06-08 | 深圳市航嘉驰源电气股份有限公司 | Magnetic core structure and device |
| CN114551377A (en) * | 2022-04-24 | 2022-05-27 | 杭州飞仕得科技有限公司 | IGBT (insulated Gate Bipolar transistor) driving packaging structure and manufacturing method |
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