Magnetic element, inductor and transformer
By using integrated insulated pressure-resistant isolation parts and flexible soft materials, elastic parts and other materials in magnetic components, the problems of pressure-resistant risks and assembly automation in the prior art are solved, efficient insulation isolation and fixation are achieved, and product safety and automation are improved.
Patent Information
- Application Number
- CN202422023562.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The existing magnetic components are made of separate insulating materials or insulating paint between the coil and the core, which poses the risk of pressure resistance and the inability to be automated assembled.
A magnetic element is designed, using an integrated insulated pressure-resistant isolation member, which is arranged on the outer wall of the flat coil. The total length of the insulated pressure-resistant isolation member is greater than or equal to the height of the flat coil. Combined with flexible soft materials, elastic parts and colloidal materials, insulated isolation and fixation are achieved.
It solves the problems of pressure resistance risk and assembly automation, realizes efficient insulation isolation and fixation of flat coils, reduces manual operation costs, and improves the product's pressure resistance safety and automation level.
Smart Images
Figure CN223038737U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of circuit components, and in particular, to a magnetic component, an inductor, and a transformer. Background Art
[0002] For some magnetic components in the related art, between the coil and the magnetic core, generally multiple separate structural members made of insulating materials are used to support and isolate the coil and the magnetic core, or an insulating paint is coated on the surface of the magnetic core.
[0003] For the method using separate structural members, in the manufacturing process, it is necessary to add glue to fix the separate structural members and the coil, add fixtures to fix the relative positions, and manual operations are required, making it impossible to achieve automation; when using insulating paint, the insulating paint may not meet the withstand voltage requirements, presenting a withstand voltage safety risk.
[0004] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model
[0005] The present disclosure provides a magnetic component, an inductor, and a transformer, which at least overcome to a certain extent the problems of withstand voltage risk and the need for manual operations and inability to achieve automation in the related art.
[0006] Other features and advantages of the present disclosure will become apparent through the following detailed description, or will be learned in part through the practice of the present disclosure.
[0007] According to a first aspect of the present disclosure, there is provided a magnetic component, comprising:
[0008] A magnetic core, the magnetic core comprising a winding post;
[0009] A flat coil, the flat coil sleeved on the winding post; and
[0010] At least one insulating and withstand voltage isolating member, each insulating and withstand voltage isolating member being integrally formed and disposed at least on the outer wall of the flat coil, and the total length of the insulating and withstand voltage isolating members being greater than or equal to the height of the flat coil.
[0011] In an embodiment of the present disclosure, the magnetic core comprises an upper magnetic core and a lower magnetic core disposed opposite to each other; the upper magnetic core comprises an upper winding post, and the lower magnetic core comprises a lower winding post; the upper magnetic core is buckled on the lower magnetic core, and the upper winding post and the lower winding post are in contact;
[0012] The flat coil is sleeved on the upper winding post and the lower winding post;
[0013] Each of the insulation and voltage withstand isolation members is disposed at least on the outer wall of the flat coil, and the total length of the insulation and voltage withstand isolation members is greater than or equal to the height of the flat coil.
[0014] In an embodiment of the present disclosure, the insulation and voltage withstand isolation member is further disposed on the magnetic core.
[0015] In an embodiment of the present disclosure, when the insulation and voltage withstand isolation member is disposed on the flat coil, the insulation and voltage withstand isolation member at least includes one of the following: a flexible soft material with adhesiveness, an elastic member, and a colloid.
[0016] In an embodiment of the present disclosure, when the insulation and voltage withstand isolation member includes the flexible soft material, the flexible soft material includes a first isolation portion, a second isolation portion, and a third isolation portion;
[0017] The first isolation portion of the flexible soft material adheres to the outer wall of the flat coil; the second isolation portion of the flexible soft material adheres to the bottom cross-section of the flat coil; the third isolation portion of the flexible soft material adheres to the top cross-section of the flat coil;
[0018] The total length of the flexible soft material is less than or equal to the sum of twice the height of the flat coil and twice the width of the top or bottom cross-section of the flat coil.
[0019] In an embodiment of the present disclosure, the second isolation portion extends from the bottom cross-section of the flat coil to the inner wall of the flat coil, and the third isolation portion extends from the top cross-section of the flat coil to the inner wall of the flat coil.
[0020] In an embodiment of the present disclosure, when the insulation and voltage withstand isolation member includes the elastic member, the elastic member is snapped onto the flat coil;
[0021] The elastic member includes a fourth isolation portion, a fifth isolation portion, and a sixth isolation portion;
[0022] The fourth isolation portion of the elastic member adheres to the outer wall of the flat coil, the fifth isolation portion of the elastic member adheres to the bottom cross-section of the flat coil; the sixth isolation portion of the elastic member adheres to the top cross-section of the flat coil;
[0023] The height of the fourth isolation portion of the elastic member is less than or equal to the height of the flat coil.
[0024] In an embodiment of the present disclosure, the fifth isolation portion extends from the bottom cross-section of the flat coil to the inner wall of the flat coil, and the sixth isolation portion extends from the top cross-section of the flat coil to the inner wall of the flat coil.
[0025] In one embodiment of the present disclosure, when the insulation and voltage withstand isolation member includes the colloid, the colloid is formed by curing a liquid colloid that coats the entire flat coil.
[0026] In one embodiment of the present disclosure, when the insulation and voltage withstand isolation member includes the colloid, the colloid is prefabricated into a snap structure by a jig and fixed on the flat coil;
[0027] The colloid includes a seventh isolation portion, an eighth isolation portion, and a ninth isolation portion;
[0028] The seventh isolation portion of the colloid adheres to the outer wall of the flat coil, the eighth isolation portion of the colloid adheres to the bottom cross-section of the flat coil; the ninth isolation portion of the colloid adheres to the top cross-section of the flat coil.
[0029] In one embodiment of the present disclosure, the magnetic core further includes:
[0030] A magnetic cover for holding the winding post; and
[0031] A first side post and a second side post located on opposite sides of the magnetic cover;
[0032] Wherein, two opposite window surfaces are formed between the first side post and the second side post, and there are edges at the junctions of the two window surfaces with the first side post and the second side post;
[0033] When the insulation and voltage withstand isolation member includes the flexible soft material and / or the elastic member, multiple flexible soft materials and / or elastic members are provided and distributed circumferentially along the flat coil;
[0034] The positions of the flexible soft material and / or the elastic member on the flat coil are opposite to the positions of the edges.
[0035] In one embodiment of the present disclosure, when the insulation and voltage withstand isolation member includes the flexible soft material and / or the elastic member, the width of each flexible soft material and / or elastic member is less than or equal to 1 / 36 of the outer wall circumference of the flat coil.
[0036] In one embodiment of the present disclosure, when the insulation and voltage withstand isolation member is disposed on the magnetic core, the insulation and voltage withstand isolation member includes at least one of the following: a flexible soft material with adhesive or bonding properties, an elastic member, and a reinforcing rib.
[0037] In one embodiment of the present disclosure, the magnetic core further includes:
[0038] A magnetic cover for holding the winding post; and
[0039] A first side post and a second side post located on opposite sides of the magnetic cover;
[0040] Among them, two opposite window surfaces are formed between the first side column and the second side column, and there are edges at the junctions of the two window surfaces with the first side column and the second side column;
[0041] When the insulation and voltage withstand isolation member includes reinforcing ribs, a plurality of reinforcing ribs are provided and distributed along the circumferential direction of the flat coil;
[0042] The reinforcing ribs are longitudinally attached to the edges, and / or longitudinally attached to the winding columns.
[0043] In an embodiment of the present disclosure, the insulation and voltage withstand isolation member is hollowed out.
[0044] In an embodiment of the present disclosure, along the circumferential direction of the flat coil, at least part of the flat coil is not provided with the insulation and voltage withstand isolation member.
[0045] According to another aspect of the present disclosure, an inductor is provided, including the magnetic element in the first aspect.
[0046] According to another aspect of the present disclosure, a transformer is provided, including the magnetic element in the first aspect.
[0047] A magnetic element, an inductor and a transformer provided by an embodiment of the present disclosure. The magnetic element includes: a magnetic core, a flat coil and at least one insulation and voltage withstand isolation member. The magnetic core includes winding columns, the flat coil is sleeved on the winding columns, each insulation and voltage withstand isolation member is integrally formed and at least disposed on the outer wall of the flat coil, and the total length of the insulation and voltage withstand isolation member is greater than or equal to the height of the flat coil. By providing an integrally formed insulation and voltage withstand isolation member, the voltage withstand requirement is met, it is ensured that the total length of the insulation and voltage withstand isolation member is greater than or equal to the height of the flat coil, the flat coil is fixed and supported, and the integrally formed insulation and voltage withstand isolation member can be automatically operated during setting, reducing the complexity of manual operation and reducing costs.
[0048] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. Description of the Drawings
[0049] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.
[0050] Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0051] Figure 1 One of the schematic diagrams of a magnetic component in an embodiment of the present disclosure;
[0052] Figure 2 One of the schematic diagrams of an insulation voltage withstand isolation member in an embodiment of the present disclosure;
[0053] Figure 3 Another schematic diagram of an insulation voltage withstand isolation member in an embodiment of the present disclosure;
[0054] Figure 4 Schematic diagram of an insulation voltage withstand isolation member disposed on a flat coil in an embodiment of the present disclosure;
[0055] Figure 5 Schematic diagram of a magnetic core in an embodiment of the present disclosure;
[0056] Figure 6 Another schematic diagram of a magnetic component in an embodiment of the present disclosure;
[0057] Figure 7 Another schematic diagram of a magnetic component in an embodiment of the present disclosure;
[0058] Figure 8 Another schematic diagram of an insulation voltage withstand isolation member in an embodiment of the present disclosure;
[0059] Figure 9 Another schematic diagram of a magnetic component in an embodiment of the present disclosure;
[0060] Figure 10 Another schematic diagram of a magnetic component in an embodiment of the present disclosure;
[0061] Figure 11 Another schematic diagram of an insulation voltage withstand isolation member in an embodiment of the present disclosure;
[0062] Figure 12 Another schematic diagram of a magnetic component in an embodiment of the present disclosure. Detailed implementation manners
[0063] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are only some, but not all, of the embodiments of the present disclosure. Components of the embodiments of the present disclosure usually described and illustrated in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the claimed present disclosure, but merely represents selected embodiments of the present disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative efforts fall within the scope of protection of the present disclosure.
[0064] The inventors have found that for some magnetic components in the related art, between the coil and the magnetic core, generally multiple separate structural members made of insulating materials are used to support and isolate the coil and the magnetic core, or an insulating paint is coated on the surface of the magnetic core.
[0065] For the method of using separate structural members, in the process, it is necessary to add dispensing to fix the separate structural members and the coil, add fixtures to fix the relative positions, and manual operations are required, making it impossible to automate; when using insulating paint, the insulating paint may not meet the withstand voltage requirements, presenting a withstand voltage safety risk.
[0066] Regarding the defects of the above solutions and the proposed solutions, they are all the results obtained by the inventors after practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed by the present disclosure below to address the above problems should all be the contributions made by the inventors to the present disclosure during the process of the present disclosure.
[0067] The following will describe this exemplary embodiment in detail with reference to the accompanying drawings and embodiments.
[0068] Figure 1 One of the schematic diagrams of a magnetic component in the embodiments of the present disclosure is shown. As Figure 1 shown, the magnetic component provided in the embodiments of the present disclosure includes a magnetic core 10, a flat coil 20, and an insulating and withstand voltage isolation member 30. Among them, the magnetic core 10 includes a winding post 101. The flat coil 20 is sleeved on the winding post 101.
[0069] In Figure 1 the illustrated embodiment, there can be one insulating and withstand voltage isolation member 30. In other embodiments of this case, there can be multiple insulating and withstand voltage isolation members 30. And the insulating and withstand voltage isolation member 30 selects materials that meet the basic insulation requirements, withstand voltage requirements, and heat resistance requirements of safety regulations. Each insulating and withstand voltage isolation member 30 is an integrally formed structure, at least disposed on the outer wall of the flat coil 20, and the total length of the insulating and withstand voltage isolation members 30 is greater than or equal to the height of the flat coil 20.
[0070] Further, for a clearer understanding, in the present disclosure, the insulation voltage withstand isolation member 30 is disposed at least on the outer wall of the flat coil 20, and the total length of the insulation voltage withstand isolation member 30 is greater than or equal to the height of the flat coil 20. Figure 2 The schematic diagram of a type-I insulation voltage withstand isolation member is shown, where the length of the insulation voltage withstand isolation member 30 is L1; Figure 3 The schematic diagram of a type-C insulation voltage withstand isolation member is shown, where the length of the insulation voltage withstand isolation member 30 is the sum of three parts L1 + L2 + L3; Figure 4 The schematic diagram of the insulation voltage withstand isolation member disposed on the flat coil is shown, where the height of the flat coil is H. In some embodiments of this case, the insulation voltage withstand isolation member 30 is Figure 2 The type-I structure shown, where the insulation voltage withstand isolation member 30 is attached to the outer wall of the flat coil 20, and L1 = H. In some other embodiments of this case, the insulation voltage withstand isolation member 30 is Figure 3 The type-C structure shown, which is disposed on the flat coil 20 as Figure 1 shown. At this time, L1 + L2 + L3 ≥ H.
[0071] Figure 5 The schematic diagram of a magnetic core in an embodiment of the present disclosure is shown, such as Figure 5 shown. The magnetic core 10 in the magnetic component can be an upper magnetic core 11 and a lower magnetic core 12 which are oppositely arranged. The upper magnetic core 11 includes an upper winding post 111, and the lower magnetic core 12 includes a lower winding post 121; the upper magnetic core 11 is buckled on the lower magnetic core 12.
[0072] Further, based on Figure 5 the schematic diagram shown, Figure 6 The schematic diagram of a magnetic component in an embodiment of the present disclosure is shown. The flat coil 20 is sleeved on the upper winding post 111 and the lower winding post 121; the upper winding post 111 and the lower winding post 121 are in contact. Since the flat coil 20, the upper magnetic core 11 and the lower magnetic core 12 block the inside, only the schematic diagram of the outside of the magnetic component is exemplarily given in Figure 5 . Among them, each insulation voltage withstand isolation member 30 is disposed at least on the outer wall of the flat coil 20, and the total length of the insulation voltage withstand isolation member 30 is greater than or equal to the height of the flat coil 20.
[0073] Figure 7 The schematic diagram of a magnetic component in an embodiment of the present disclosure is shown. As Figure 7 shown, taking the insulation voltage withstand isolation member 30 being set to four as an example to more firmly fix the flat coil 20. Among them, the insulation voltage withstand isolation member 30 can be in shapes such as type-I, type-C, or a combination of multiple shapes.
[0074] As can be seen from the description of the above embodiments, for the magnetic component in the present disclosure, an insulation voltage withstand isolation member 30 is disposed on the outer wall of the flat coil 20 to support and fix the flat coil 20 and provide insulation isolation, so that when the flat coil 20 is powered on, the problem of deformation is reduced, and the coil is prevented from bouncing as much as possible. In addition, the insulation voltage withstand isolation member 30 has an integrally formed structure. When it is disposed on the outer wall of the flat coil 20, it is easy to be modularly fixed and mass-produced, enabling the assembly process of the magnetic component to be automated, reducing the labor operation cost, and at the same time ensuring the safety distance between the flat coil and the magnetic core, meeting the voltage withstand safety requirements.
[0075] In some embodiments of this case, the insulation voltage withstand isolation member 30 is disposed on the flat coil 20. At this time, the insulation voltage withstand isolation member 30 includes at least one of the following: a flexible soft material with adhesiveness, an elastic member, and a colloid. Among them, the flexible soft material can be an adhesive, a tape, a heat-conducting rubber, etc. The elastic member can be an elastic plastic part or an elastic mechanism part. The colloid can be obtained by curing a liquid glue. The liquid glue can be a heat-conducting glue or some other glue that meets the safety regulations and voltage withstand and heat resistance requirements.
[0076] The flexible soft material with adhesiveness and the elastic member can be set to be in structures such as I-shaped, C-shaped, or U-shaped. Among them, the I-shaped and C-shaped are as Figure 2 and Figure 3 shown, Figure 8 Another schematic diagram showing an insulation voltage withstand isolation member in a U-shaped structure is shown.
[0077] In some embodiments of this case, according to actual user requirements, the insulation voltage withstand isolation member 30 can include multiple types. For example, a flexible soft material with adhesiveness and a colloid are disposed on the outer wall of the flat coil 20. In this way, the stability of the flat coil 20 can be further improved, and the voltage withstand safety can also be improved.
[0078] In some embodiments of this case, according to actual user requirements, after the flexible soft material with adhesiveness is disposed on the outer wall of the flat coil 20, a flexible soft material with adhesiveness can be further disposed on the magnetic core 10. The voltage withstand safety between the flat coil 20 and the magnetic core 10 is further improved. Disposing insulation voltage withstand isolation members on both the flat coil 20 and the magnetic core 10 can also ensure uniform distribution of the flexible soft material and avoid collisions between the flat coil 20 and the magnetic core 10 when the flat coil 20 enters the working state after being powered on.
[0079] In some embodiments of this case, the flat coil 20 can be immersed in a liquid glue, and the integrally formed colloid obtained by curing the liquid glue is used as the insulation voltage withstand isolation member 30. The colloid can also be prefabricated into a buckle structure through a jig and then fixed on the flat coil.
[0080] In some embodiments of this case, a flexible soft material with adhesiveness can be first attached to the flat coil 20 in an attached manner, the flexible soft material is attached in a C shape, and then the flat coil 20 with the attached flexible soft material is immersed in a liquid glue. Finally, a ring-shaped flat coil 20 coated with the colloid and fixed by the flexible soft material in an attached manner is formed, and it is sleeved on the winding post 110. In addition, a flexible soft material can also be attached to the magnetic core 10, and the flexible soft material is attached in an I shape.
[0081] The above-mentioned insulation and voltage withstand isolation member 30 is provided on the flat coil 20 and on the magnetic core 10. Specifically, the number, type, shape, and material of the insulation and voltage withstand isolation member 30 can all be selected and set according to the actual needs of the user. The specific setting method of the insulation and voltage withstand isolation member 30 on the flat coil 20 and on the magnetic core 10, in addition to methods such as pasting, coating, and buckling, other setting methods can also be adopted.
[0082] Furthermore, if there are technical means that can improve the automation operation through the setting method, in the embodiments of the present disclosure, corresponding technical means can also be adopted for setting the insulation and voltage withstand isolation member 30, which is also within the protection scope of the present disclosure.
[0083] Please refer to again Figure 4 , which includes Figure 4 a and Figure 4 b, Figure 4 a is the bottom cross-section of the flat coil 20 facing upward, Figure 4 b is the top cross-section of the flat coil 20 facing upward.
[0084] When the insulation and voltage withstand isolation member 30 includes a flexible soft material 310, the flexible soft material includes Figure 4 a first isolation part 311 and a second isolation part 312 in a, and Figure 4 a third isolation part 313 in b. Figure 4 Taking including one flexible soft material 310 as an example.
[0085] The first isolation part 311 of the flexible soft material 310 is attached to the outer wall of the flat coil 20; the second isolation part 312 of the flexible soft material 310 is attached to the bottom cross-section of the flat coil 20, and the third isolation part 313 of the flexible soft material 310 is attached to the top cross-section of the flat coil 20.
[0086] In some embodiments of this case, the second isolation part 312 extends from the bottom cross-section of the flat coil 20 to the inner wall of the flat coil 20, and the third isolation part 313 extends from the top cross-section of the flat coil 20 to the inner wall of the flat coil 20. At this time, the flexible soft material is Figure 8The U-shaped structure shown. In this way, the effect of fixing the flexible soft material can be improved, preventing the flat coil 20 from deforming left and right when in the working state, and ensuring that the flat coil 20 does not collide with the magnetic core 10 when in the working state.
[0087] The total length of the flexible soft material 310 is less than or equal to the sum of twice the height of the flat coil 20 and twice the cross-sectional width of the top or bottom of the flat coil 20. This ensures that the flexible soft material 310 does not stack on the flat coil 20, causing the inner or outer wall of the flat coil 20 to thicken. Since the space between the flat coil 20 and the magnetic core 10 is small, if stacking occurs, it will increase the possibility of collision between the flat coil 20 and the magnetic core 10, resulting in a higher probability of errors.
[0088] To address this problem, either the width of the flat coil 20 can be narrowed or the diameter of the magnetic core 10 can be reduced to ensure that the flat coil 20 does not collide with the magnetic core 10 when in the working state. However, this kind of treatment will cause problems such as a decrease in the current carried by the magnetic component. Therefore, it is necessary to ensure that the total length of the flexible soft material is within the set length range.
[0089] In some embodiments of this case, when the insulation and voltage withstand isolation member 30 includes an elastic member, the elastic member is snapped onto the flat coil 20 in a snap-fit manner.
[0090] The elastic member includes a fourth isolation portion, a fifth isolation portion, and a sixth isolation portion. The fourth isolation portion of the elastic member adheres to the outer wall of the flat coil 20, the fifth isolation portion of the elastic member adheres to the bottom cross-section of the flat coil 20; the sixth isolation portion of the elastic member adheres to the top cross-section of the flat coil 20.
[0091] The schematic diagram of the elastic member disposed on the flat coil 20 is similar to Figure 4 which can be referred to the above Figure 4 and will not be elaborated here.
[0092] It should be noted that the height of the fourth isolation portion of the elastic member is less than or equal to the height of the flat coil 20. The height of the fourth isolation portion of the elastic member is approximately 0.9 - 1 times the height of the flat coil 20. The height of the elastic member is slightly less than the height of the flat coil 20. The elastic member has elasticity and is snapped onto the flat coil 20. When playing a fixing role, it improves the fixing effect and prevents the flat coil 20 from deforming up and down when in the working state.
[0093] In some embodiments of this case, the fifth isolation portion extends from the bottom cross-section of the flat coil to the inner wall of the flat coil, and the sixth isolation portion extends from the top cross-section of the flat coil to the inner wall of the flat coil. At this time, the elastic member is Figure 8The U-shaped structure shown. In this way, the fixing effect of the elastic member can be improved, preventing the flat coil 20 from deforming left and right when in the working state, and ensuring that the flat coil 20 does not collide with the magnetic core 10 when in the working state.
[0094] In some embodiments of this case, when the insulation and voltage withstand isolation member includes a colloid, the colloid is formed by curing a liquid colloid that coats the entire flat coil. In some other embodiments of this case, the colloid can also be prefabricated into a snap structure by a jig and fixed on the flat coil.
[0095] The colloid includes a seventh isolation part, an eighth isolation part, and a ninth isolation part. The seventh isolation part of the colloid adheres to the outer wall of the flat coil, the eighth isolation part of the colloid adheres to the bottom cross-section of the flat coil; the ninth isolation part of the colloid adheres to the top cross-section of the flat coil.
[0096] When the colloid is prefabricated into a snap structure by a jig and fixed on the flat coil 20, the schematic diagram of the setting method is similar to Figure 4 and can refer to the above Figure 4 and will not be elaborated here.
[0097] Figure 9 Figure 4 shows a schematic diagram of a magnetic component in an embodiment of the present disclosure, as Figure 9 shown. The magnetic core 10 further includes: a magnetic cover 120, a first side post 130, a second side post 140, and an edge 150.
[0098] The magnetic cover 120 is used to hold the winding post 110. The first side post 130 and the second side post 140 are located on opposite sides of the magnetic cover 120. Among them, two opposite window surfaces 160, 170 are formed between the first side post 130 and the second side post 140, and there is an edge 150 at the junction of the two window surfaces 160, 170 and the first side post 130 and the second side post 140.
[0099] When the insulation and voltage withstand isolation member 30 includes a flexible soft material and / or an elastic member, multiple flexible soft materials and / or elastic members are provided and distributed circumferentially along the flat coil 20. The positions of the flexible soft material and / or the elastic member on the flat coil 20 are opposite to the positions of the edges 150. Among them, there are four edges 150 on one magnetic core 10. The flexible soft material or the elastic member can also be four, or four flexible soft materials and four elastic members.
[0100] Setting the positions of the flexible soft material and / or the elastic member on the flat coil 20 to be opposite to the positions of the edges 150 can ensure that the positions where the flexible soft material and / or the elastic member are set are the farthest from the first side post 130 and the second side post 140 of the magnetic core 10, and can reduce the collision probability between the flat coil 20 and the magnetic core 10.
[0101] In some embodiments of this case, along the circumferential direction of the flat coil 20, the insulation and voltage withstand isolation member 30 is not provided at least partially on the flat coil 20.
[0102] With the above structure, it can be ensured that there is a window in the flat coil 20. Refer to Figure 6 As shown, when the upper magnetic core 11 and the lower magnetic core 12 enclose the flat coil 20 inside, in some ways in the related art, for example, using multiple separate structural members made of insulating materials to enclose the flat coil 20 inside, the multiple separate structural members made of insulating materials will completely confine the flat coil 20 inside, which is not conducive to the heat dissipation of the flat coil 20 and may reduce the service life of the flat coil 20.
[0103] In the embodiments of the present disclosure, by arranging the insulation and voltage withstand isolation member 30 on the outer wall of the flat coil 20 and not providing the insulation and voltage withstand isolation member 30 at least partially, a certain window can be reserved for the flat coil 20, thereby improving the heat dissipation effect. When using a fan or other means to blow air for heat dissipation externally, the air flow channel can be increased. In addition, by reserving a window, when potting liquid glue, the space for potting liquid glue can be increased. In this way, the heat dissipation effect can be improved and the thermal temperature rise can be improved.
[0104] In some embodiments of this case, when the insulation and voltage withstand isolation member 30 includes a flexible soft material and / or an elastic member, the width of each flexible soft material and / or elastic member is less than or equal to 1 / 36 of the outer wall circumference of the flat coil 20. It can be referred to Figure 9 As shown, when the insulation and voltage withstand isolation member 30 is arranged on the flat coil 20, on the basis of increasing the window as much as possible, the fixing effect of fixing the flat coil 20 is ensured. The width of each flexible soft material and / or elastic member can occupy 5 degrees or 10 degrees of one week of the flat coil 20.
[0105] In some embodiments of this case, the insulation and voltage withstand isolation member 30 can also be arranged on the magnetic core 10. At this time, the insulation and voltage withstand isolation member 30 at least includes one of the following: a flexible soft material with adhesiveness or bonding performance, an elastic member, and a reinforcing rib.
[0106] Figure 10 Figure 5 shows a schematic diagram of a magnetic element in the embodiments of the present disclosure, as Figure 10 shown. When the insulation and voltage withstand isolation member 30 includes a reinforcing rib 320, multiple reinforcing ribs can be provided and distributed along the circumferential direction of the flat coil. The reinforcing ribs are longitudinally attached to the edges and / or longitudinally attached to the winding posts.
[0107] Figure 10 In the shown embodiment, the attachment positions are longitudinally attached to the edges and longitudinally attached to the winding posts.
[0108] In some embodiments of this case, the insulation and voltage withstand isolation member 30 can be selectively set to be hollowed out, as Figure 11 shown.
[0109] Figure 12 FIG. 6 shows a schematic diagram of a magnetic element in an embodiment of the present disclosure. As Figure 12 shown, the magnetic element is attached to the flat coil 20 with a flexible soft material whose total length is the sum of twice the height of the flat coil 20 and twice the width of the top or bottom cross-section. It is distributed along the circumferential direction of the flat coil 20 and is longitudinally attached to the flat coil 20. The attachment position is opposite to the edge position, and the flexible soft material is set to be hollowed out, and the width of the flexible soft material is set to 1 / 36 of the outer wall circumference of the flat coil 20.
[0110] Furthermore, at the gap between the flat coil 20 and the magnetic core, a heat-conducting colloid is potted.
[0111] Through Figure 12 the magnetic element in, the flat coil can be fixed and supported; and when the integrally formed insulation and voltage withstand isolation member is set, the flat coil is easily modularized and fixed, and is easy to mass-produce. The assembly operation process of the magnetic element is automated, reducing the manual operation cost; it can also ensure the safety distance between the flat coil and the magnetic core, and through the protection of the insulation and voltage withstand isolation member, meet the voltage withstand safety requirements; it can also reserve a window through the width setting of the insulation and voltage withstand isolation member, improve the window utilization rate, increase the air flow channel or the space for potting the colloid, and improve the heat temperature rise.
[0112] In some embodiments of this case, an inductor is further provided, and the inductor includes the above magnetic element.
[0113] In some embodiments of this case, a transformer is further provided, and the transformer includes the above magnetic element.
[0114] In the embodiments of the present disclosure, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of functions executed by these devices, modules or units or their interdependent relationships.
[0115] The term " / and" in the present disclosure is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A / and B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.
[0116] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein.
[0117] The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common general knowledge or conventional technical means in the art not disclosed herein. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.
Claims
1. A magnetic element, characterized in that: include: A magnetic core, the magnetic core comprising a winding post; A flat coil, wherein the flat coil is sleeved on the winding column; as well as At least one insulating and voltage-resistant isolating piece, each of which is integrally formed and at least arranged on the outer wall of the flat coil, and the total length of the insulating and voltage-resistant isolating piece is greater than or equal to the height of the flat coil.
2. The magnetic element according to claim 1, characterized in that: The magnetic core comprises an upper magnetic core and a lower magnetic core which are arranged opposite to each other; the upper magnetic core comprises an upper winding post, and the lower magnetic core comprises a lower winding post; the upper magnetic core is buckled on the lower magnetic core, and the upper winding post and the lower winding post are in contact with each other; The flat coil is sleeved on the upper winding post and the lower winding post; Each of the insulating and voltage-resistant isolating members is at least disposed on the outer wall of the flat coil, and the total length of the insulating and voltage-resistant isolating members is greater than or equal to the height of the flat coil.
3. The magnetic element according to claim 1 or 2, characterized in that: The insulating voltage-resistant spacer is also arranged on the magnetic core.
4. The magnetic element according to claim 1 or 2, characterized in that: When the insulating and voltage-resistant isolating member is disposed on the flat coil, the insulating and voltage-resistant isolating member comprises at least one of the following: a flexible soft material with viscosity, an elastic member and a colloid.
5. The magnetic element according to claim 4, characterized in that: When the insulating voltage-withstand isolating member comprises the flexible soft material, the flexible soft material comprises a first isolating portion, a second isolating portion and a third isolating portion; The first isolation part of the flexible soft material is attached to the outer wall of the flat coil; the second isolation part of the flexible soft material is attached to the bottom cross section of the flat coil; the third isolation part of the flexible soft material is attached to the top cross section of the flat coil; The total length of the flexible soft material is less than or equal to the sum of twice the height of the flat coil and twice the width of the top or bottom cross section of the flat coil.
6. The magnetic element according to claim 5, characterized in that: The second isolating portion extends from a bottom cross section of the flat coil to an inner wall of the flat coil, and the third isolating portion extends from a top cross section of the flat coil to an inner wall of the flat coil.
7. The magnetic element according to claim 4, characterized in that: When the insulating and withstand-voltage isolating member includes the elastic member, the elastic member is buckled on the flat coil; The elastic member includes a fourth isolation portion, a fifth isolation portion and a sixth isolation portion; The fourth isolating portion of the elastic member is attached to the outer wall of the flat coil, the fifth isolating portion of the elastic member is attached to the bottom cross section of the flat coil; the sixth isolating portion of the elastic member is attached to the top cross section of the flat coil; The height of the fourth isolation portion of the elastic member is less than or equal to the height of the flat coil.
8. The magnetic element according to claim 7, characterized in that: The fifth partition extends from a bottom cross section of the flat coil to an inner wall of the flat coil, and the sixth partition extends from a top cross section of the flat coil to an inner wall of the flat coil.
9. The magnetic element according to claim 4, characterized in that: When the insulating voltage-resistant spacer includes the colloid, the colloid is formed by solidifying a liquid glue that covers the entire flat coil.
10. The magnetic element according to claim 4, characterized in that: When the insulating and withstand-voltage isolating member includes the colloid, the colloid is prefabricated into a snap-fit structure by a jig and fixed on the flat coil; The colloid includes a seventh isolating portion, an eighth isolating portion and a ninth isolating portion; The seventh isolating portion of the colloid is attached to the outer wall of the flat coil, the eighth isolating portion of the colloid is attached to the bottom cross section of the flat coil; and the ninth isolating portion of the colloid is attached to the top cross section of the flat coil.
11. The magnetic element according to claim 4, characterized in that: The magnetic core also includes: A magnetic cover for accommodating the winding post; and A first side column and a second side column are located on opposite sides of the magnetic cover; Wherein, two opposite window surfaces are formed between the first side column and the second side column, and edges exist at the junctions of the two window surfaces with the first side column and the second side column; When the insulating and withstand voltage isolation member includes the flexible soft material and / or the elastic member, the flexible soft material and / or the elastic member are provided in plurality and distributed along the circumference of the flat coil; The position of the flexible soft material and / or the elastic member on the flat coil is opposite to the position of the edge.
12. The magnetic element according to claim 4, characterized in that: When the insulating voltage-resistant spacer includes the flexible soft material and / or the elastic member, the width of each of the flexible soft material and / or the elastic member is less than or equal to 1 / 36 of the circumference of the outer wall of the flat coil.
13. The magnetic element according to claim 3, characterized in that: When the insulating and voltage-resistant isolating member is disposed on the magnetic core, the insulating and voltage-resistant isolating member comprises at least one of the following: a flexible soft material with viscosity or adhesive properties, an elastic member, and a reinforcing rib.
14. The magnetic element according to claim 13, characterized in that: The magnetic core also includes: A magnetic cover for accommodating the winding post; and A first side column and a second side column are located on opposite sides of the magnetic cover; Wherein, two opposite window surfaces are formed between the first side column and the second side column, and edges exist at the junctions of the two window surfaces with the first side column and the second side column; When the insulating and withstand voltage isolation member includes reinforcing ribs, a plurality of reinforcing ribs are provided and distributed along the circumference of the flat coil; The reinforcing rib is longitudinally attached to the edge and / or longitudinally attached to the winding pole.
15. The magnetic element according to claim 1, characterized in that The insulating voltage-resistant isolation piece is hollow.
16. The magnetic element according to claim 1, characterized in that Along the circumference of the flat coil, at least a portion of the flat coil is not provided with the insulating voltage-withstanding spacer.
17. An inductor, characterized in that: Comprising the magnetic element according to any one of claims 1 to 16.
18. A transformer, characterized in that: Comprising the magnetic element according to any one of claims 1 to 16.