Magnetic core devices, transformers and power supply devices

Abstract

The utility model discloses a magnetic core device, a transformer and a power supply device, wherein the magnetic core device comprises a magnetic core assembly, a plurality of inductance coils and a transformer coil assembly, wherein the magnetic core assembly has a plurality of installation slots arranged at intervals, the plurality of installation slots are arranged coaxially and the positions correspond to each other; the plurality of inductance coils are installed one-to-one in the plurality of installation slots; the transformer coil assembly is wound outside the magnetic core assembly along the circumference of the magnetic core assembly, so that the magnetic flux direction of the transformer coil assembly is perpendicular to the magnetic flux direction of the inductance coil. The utility model is used to realize lightweight and small volume design and solve the heat dissipation problem.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a magnetic core device, a transformer and a power supply device. Background Art

[0002] Lightweight and small size are important indicators for power devices such as vehicle-mounted power supplies. However, as the power density of the whole machine continues to increase, the power of magnetic devices such as transformers and inductors used in vehicle-mounted power circuits has increased, resulting in the increasing size of power devices such as vehicle-mounted power supplies. Therefore, integrating the resonant inductor with the transformer has become an important means to reduce the size.

[0003] At present, it is common to integrate the resonant inductor and the transformer by using the back-to-back integration method to achieve integrated design. The back-to-back means that the resonant inductor and the transformer share part of the magnetic circuit. The back-to-back integration design requires the magnetic cores of the two sets of inductors to surround the resonant inductor. Although the weight and volume of the combined structure are slightly reduced, it still cannot meet the requirements of lightweight and small volume, and cannot simultaneously meet the requirements of the back-to-back magnetic flux subtraction during bidirectional conversion. As a result, the back-to-back magnetic cores are subtracted in the forward direction and added in the reverse direction. The addition will increase heat and cause heat dissipation problems. The back-to-back integration method can no longer meet the production and use requirements. Utility Model Content

[0004] The main purpose of the utility model is to provide a magnetic core device, a transformer and a power supply device, aiming to achieve lightweight and small-volume design and solve the heat dissipation problem caused by magnetic flux superposition.

[0005] To achieve the above object, the utility model provides a magnetic core device, comprising:

[0006] A magnetic core assembly, wherein the magnetic core assembly has a plurality of installation slots arranged at intervals, the plurality of installation slots are coaxially arranged and positions correspond to each other;

[0007] A plurality of inductor coils, wherein the plurality of inductor coils are installed one-to-one in a plurality of installation slots;

[0008] A transformer coil component is wound around the magnetic core component along the circumference of the magnetic core component, so that the magnetic flux direction of the transformer coil component and the magnetic flux direction of the inductor are perpendicular to each other.

[0009] In one embodiment, the magnetic core assembly at least includes a first magnetic core member, a second magnetic core member, and a third magnetic core member that are coaxially arranged, and the plurality of mounting grooves include a first mounting groove provided in the first magnetic core member and a second mounting groove provided in the second magnetic core member, and positions of the first mounting groove and the second mounting groove correspond to each other;

[0010] The multiple inductors include a first inductor and a second inductor. The first inductor is installed in the first installation groove, and the second inductor is installed in the second installation groove. The third magnetic core is arranged between the first magnetic core and the second magnetic core to separate the first inductor and the second inductor.

[0011] In one embodiment, the first magnetic core member, the second magnetic core member and the third magnetic core member are independently arranged;

[0012] Alternatively, at least parts of the first magnetic core member, the second magnetic core member and the third magnetic core member are connected as one.

[0013] In one embodiment, when the first magnetic core member, the second magnetic core member and the third magnetic core member are independently arranged,

[0014] The first magnetic core member has a first end surface and a second end surface opposite to each other, and the first mounting groove is provided on the first end surface of the first magnetic core member;

[0015] And / or, the second magnetic core member has a first end surface and a second end surface opposite to each other, and the second mounting groove is provided on the second end surface of the second magnetic core member.

[0016] In one embodiment, there are multiple first magnetic core pieces, which are stacked in order from bottom to top, the second magnetic core piece is stacked on the topmost first magnetic core piece, and the third magnetic core piece is blocked between the second magnetic core piece and the topmost first magnetic core piece.

[0017] In one embodiment, the magnetic core component further includes an insulating spacer, and the insulating spacer is arranged between the third magnetic core component and the first magnetic core component, and / or the insulating spacer is arranged between the third magnetic core component and the second magnetic core component.

[0018] In one embodiment, when the insulating baffle is disposed between the third magnetic core component and the first magnetic core component, a limiting groove is disposed between the first magnetic core component and the third magnetic core component, the limiting groove is communicated with the first installation groove and is disposed along the circumference of the magnetic core component, so as to position and install the insulating baffle;

[0019] When the insulating baffle is arranged between the third magnetic core component and the second magnetic core component, a limiting groove is arranged between the second magnetic core component and the third magnetic core component. The limiting groove is connected to the second installation groove and is arranged along the circumference of the magnetic core assembly to position and install the insulating baffle.

[0020] In one embodiment, the magnetic core assembly is provided with a magnetic core hole;

[0021] The first magnetic core member comprises a first annular wall and a second annular wall which are coaxially arranged, the first mounting groove is formed between the first annular wall and the second annular wall, the height of the first annular wall is smaller than the height of the second annular wall, and the limiting groove is arranged on the first annular wall;

[0022] And / or, the second magnetic core member includes a coaxially arranged third annular wall and a fourth annular wall, the second mounting groove is formed between the third annular wall and the fourth annular wall, the height of the third annular wall is less than the height of the fourth annular wall, and the limiting groove is arranged on the third annular wall.

[0023] In one embodiment, the transformer coil assembly includes at least two coils, and the at least two coils are sequentially wound outside the magnetic core assembly from inside to outside along the circumference of the magnetic core assembly.

[0024] In one embodiment, a notch is provided on the magnetic core component, and the notch is communicated with the plurality of mounting grooves for leading out the connection ends of the plurality of inductor coils.

[0025] In one embodiment, heat conductive adhesive is filled between the inductor coil and the mounting groove.

[0026] In order to achieve the above object, the utility model also provides a transformer, including the magnetic core device as described above.

[0027] In one embodiment, the magnetic core assembly is provided with a magnetic core hole, and the transformer further includes a shell, at least one side of the shell is open, a connecting piece is provided at the open position, and the magnetic core hole is penetrated on the connecting piece so that the transformer coil assembly is at least partially received in the shell.

[0028] In one embodiment, thermal conductive glue is filled between the magnetic core component and the shell.

[0029] In order to achieve the above-mentioned object, the utility model also provides a power supply device, including the magnetic core device as described above or including the transformer as described above.

[0030] Compared with the prior art, the utility model has the following beneficial effects:

[0031] The magnetic core assembly has a plurality of installation grooves arranged at intervals, the plurality of installation grooves are coaxially arranged and the positions correspond to each other, the plurality of inductance coils are installed one-to-one in the plurality of installation grooves, so as to realize the positioning and installation of the inductance coils through the installation grooves, the positions of the plurality of installation grooves correspond to each other, so as to reduce the occupied space of the magnetic core assembly and the inductance coils, realize the miniaturized design of the magnetic core device and the transformer, and further reduce the occupied space of the power supply device;

[0032] The multiple installation grooves are arranged at intervals from each other to separate the inductor coils arranged in the installation grooves, so that the magnetic fluxes of the inductor coils are parallel to avoid mutual coupling, and meet the requirements of the magnetic flux subtraction of the common back magnetic core when the magnetic core device and the transformer are working in bidirectional conversion; the multiple installation grooves are arranged at intervals from each other, which can also reduce the effective cross-sectional area of ​​the magnetic core of the magnetic core device, reduce the weight of the magnetic core assembly, and further achieve lightweight design;

[0033] The transformer coil assembly is wound around the outside of the magnetic core assembly along the circumference of the magnetic core assembly to ensure uniform magnetic flux distribution, further optimize the decoupling effect while avoiding leakage inductance, and make the magnetic flux direction of the transformer coil assembly perpendicular to the magnetic flux direction of the inductor coil to avoid heat dissipation problems caused by magnetic flux superposition. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0035] Figure 1 It is a structural schematic diagram of an embodiment of a magnetic core device of the utility model;

[0036] Figure 2 A top view of an embodiment of a magnetic core device of the utility model;

[0037] Figure 3 A cross-sectional view of an embodiment of a magnetic core device of the utility model;

[0038] Figure 4 An exploded view of an embodiment of a magnetic core device of the utility model;

[0039] Figure 5 An exploded view of another embodiment of the magnetic core device of the utility model;

[0040] Figure 6 It is a partial structural schematic diagram of another embodiment of the magnetic core device of the utility model;

[0041] Figure 7 A test diagram of a partial structure of another embodiment of the magnetic core device of the utility model;

[0042] Figure 8 This is an exploded view of a partial structure of another embodiment of the magnetic core device of the present utility model.

[0043] Description of Figure Numbers:

[0044]

[0045]

[0046] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] It should be noted that if all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture, if the specific posture changes, the directional indication will also change accordingly.

[0049] If the description of "first", "second", etc. in the present utility model is only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance, or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. If the description of "A and / or B" is involved in the present utility model, it means that it includes solution A or solution B, or includes solution A and solution B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0050] Lightweight and small size are important indicators for power devices such as vehicle-mounted power supplies. However, as the power density of the whole machine continues to increase, the power of magnetic devices such as transformers and inductors used in vehicle-mounted power circuits has increased, resulting in the increasing size of power devices such as vehicle-mounted power supplies. Therefore, integrating the resonant inductor with the transformer has become an important means to reduce the size.

[0051] At present, it is common to integrate the resonant inductor and the transformer by using the back-to-back integration method to achieve integrated design. The back-to-back means that the resonant inductor and the transformer share part of the magnetic circuit. The back-to-back integration design requires the magnetic cores of the two sets of inductors to surround the resonant inductor. Although the weight and volume of the combined structure are slightly reduced, it still cannot meet the requirements of lightweight and small volume, and cannot simultaneously meet the requirements of the back-to-back magnetic flux subtraction during bidirectional conversion. As a result, the back-to-back magnetic cores are subtracted in the forward direction and added in the reverse direction. The addition will increase heat and cause heat dissipation problems. The back-to-back integration method can no longer meet the production and use requirements.

[0052] In order to achieve lightweight and small-volume design and reduce heat dissipation problems caused by magnetic flux superposition, the present application proposes a magnetic core device, a transformer and a power supply device.

[0053] Reference Figures 1 to 8 The magnetic core device includes a magnetic core component 100 , a plurality of inductor coils 200 and a transformer coil component 400 .

[0054] The magnetic core assembly 100 has a plurality of installation slots arranged at intervals, the plurality of installation slots are coaxially arranged and the positions correspond to each other; the plurality of inductance coils are installed one-to-one in the plurality of installation slots.

[0055] The transformer coil assembly 400 is wound outside the magnetic core assembly 100 along the circumferential direction of the magnetic core assembly 100, so that the magnetic flux direction of the transformer coil assembly 400 is perpendicular to the magnetic flux direction of the inductor 200. This ensures uniform magnetic flux distribution, further optimizes the decoupling effect while avoiding leakage inductance, and makes the magnetic flux direction of the transformer coil assembly 400 perpendicular to the magnetic flux direction of the inductor 200, so as to avoid heat dissipation problems caused by magnetic flux superposition.

[0056] As a specific embodiment of the present application, the magnetic core component 100 at least includes a first magnetic core member 110, a second magnetic core member 120 and a third magnetic core member 130 which are coaxially arranged. The position of the third magnetic core member 130 corresponds to the positions of the first mounting groove 1101 and the second mounting groove 1201. The third magnetic core member 130 is arranged between the first magnetic core member 110 and the second magnetic core member 120 to separate the first mounting groove 1101 and the second mounting groove 1201, and further separate the inductor coils arranged in the first mounting groove 1101 and the inductor coils arranged in the second mounting groove 1201. The inductor coils arranged in the first magnetic core member 110 and the inductor coils arranged in the second magnetic core member 120 are separated by the third magnetic core member 130, so that the multiple inductor coils are independent of each other. Such an arrangement can also reduce the effective cross-sectional area of ​​the magnetic core of the magnetic core device, reduce the weight of the magnetic core component 100, and further achieve a lightweight design.

[0057] In the present application, components of the magnetic core assembly 100 , such as the first magnetic core piece 110 , the second magnetic core piece 120 , and the third magnetic core piece 130 , are made of magnetic conductive materials.

[0058] Further, optionally, the plurality of mounting grooves include but are not limited to a first mounting groove 1101 and a second mounting groove 1201, the third magnetic core member 130 is disposed between the first magnetic core member 110 and the second magnetic core member 120, a first mounting groove 1101 is provided between the third magnetic core member 130 and the first magnetic core member 110, a second mounting groove 1201 is provided between the third magnetic core member 130 and the second magnetic core member 120, and positions of the first mounting groove 1101 and the second mounting groove 1201 correspond to each other.

[0059] As an embodiment of the present application, the plurality of mounting grooves include a first mounting groove 1101 provided on the first magnetic core member 110, and a second mounting groove 1201 provided on the second magnetic core member 120, and the positions of the first mounting groove 1101 and the second mounting groove 1201 correspond to each other. Specifically, the first mounting groove 1101 is provided at any position of the first magnetic core member 110, and the second mounting groove 1201 is provided at any position of the second magnetic core member 120, and the position of the second mounting groove 1201 on the second magnetic core member 120 corresponds to the position of the first mounting groove 1101 on the first magnetic core member 110.

[0060] As another embodiment of the present application, the third magnetic core member 130 has a first end face and a second end face opposite to each other, the first magnetic core member 110 is arranged close to the second end face of the third magnetic core member 130, the second magnetic core member 120 is arranged close to the first end face of the third magnetic core member 130, the first mounting groove 1101 is arranged at the second end face of the third magnetic core member 130, the second mounting groove 1201 is arranged at the first end face of the third magnetic core member 130, and the positions of the first mounting groove 1101 and the second mounting groove 1201 correspond to each other; or, the third magnetic core member 130 is arranged between the first magnetic core member 110 and the second magnetic core member 120, a slot is reserved between the third magnetic core member 130 and the first magnetic core member 110 to form the first mounting groove 1101, and a slot is reserved between the third magnetic core member 130 and the second magnetic core member 120 to form the second mounting groove 1201. Specifically, the first mounting groove 1101 and the second mounting groove 1201 can be arranged according to actual conditions, and are not limited here.

[0061] In the present application, the plurality of inductors 200 include a first inductor 210 and a second inductor 220. The first inductor 210 is installed in a first installation groove 1101, and the second inductor 220 is installed in a second installation groove 1201. The third magnetic core member 130 is disposed between the first magnetic core member 110 and the second magnetic core member 120 to separate the first inductor 210 and the second inductor 220. The first installation groove 1101 and the second installation groove 1201 are used to realize the positioning and installation of the first inductor 210 and the second inductor 220. The positions of the first installation groove 1101 and the second installation groove 1201 correspond to each other, so as to reduce the occupied space of the magnetic core assembly 100 and the inductor 200, realize the miniaturization design of the magnetic core device and the transformer, and further reduce the occupied space of the power supply device.

[0062] In the present application, optionally, the magnetic core assembly 100 shown can be specifically composed of a can magnetic core of the type UIU, EI, etc. or any other combination of magnetic core pieces. The cross section of the peripheral wall of the magnetic core piece can be circular, elliptical, rectangular or other regular or irregular shapes. The magnetic core piece is provided with a magnetic core hole 160. The cross section of the magnetic core assembly 100 can form any hollow shape suitable for use corresponding to the peripheral wall of the magnetic core piece. The shapes, sizes, etc. of the first magnetic core piece 110, the second magnetic core piece 120, the third magnetic core piece 130 and other magnetic core pieces combined into the magnetic core assembly 100 can be the same or different, and are not limited here.

[0063] Furthermore, the magnetic core component also includes an insulating baffle 300, which is made of non-magnetic insulating material. Specifically, according to the structure of the magnetic core assembly 100 and the combination of each magnetic component, the insulating baffle 300 can be set on the third magnetic core component; or the insulating baffle 300 can be set between the third magnetic core component 130 and the first magnetic core component 110; or the insulating baffle 300 can be set between the third magnetic core component 130 and the second magnetic core component 120; or the insulating baffle 300 can be set between the third magnetic core component 130 and the first magnetic core component 110, and between the third magnetic core component 130 and the second magnetic core component 120. The insulating barrier sheet 300 is disposed between the third magnetic core member 130 and the first magnetic core member 110 (and / or between the third magnetic core member 130 and the second magnetic core member 120), and plays a role of limiting and sealing, so as to further isolate the first inductor coil 210 and the second inductor coil 220, and seal the first inductor coil 210 between the third magnetic core member 130 and the first magnetic core member 110, and seal the second inductor coil 220 between the third magnetic core member 130 and the second magnetic core member 120, so as to avoid positional displacement of the first inductor coil 210 and the second inductor coil 220. The insulating barrier sheet 300 is also used to form an air gap between the third magnetic core member 130 and the first magnetic core member 110, and between the third magnetic core member 130 and the second magnetic core member 120, and to adjust the inductance so that the magnetic fluxes of the first inductor coil 210 and the second inductor coil 220 are parallel, so as to reduce coupling or avoid mutual coupling between the two. In the present application, the first magnetic core component 110 and the first inductor coil 210, and the second magnetic core component 120 and the second inductor coil 220 are arranged adjacent to each other. By setting the insulating barrier sheet 300, the space occupied by the magnetic core components is reduced while further realizing the common back decoupling of the resonant inductor, thereby meeting the requirement of subtracting the common back magnetic flux when the magnetic core components and the transformer are working in bidirectional conversion.

[0064] Furthermore, in order to optimize the aesthetics, facilitate production, processing and assembly, and ensure uniform distribution of the magnetic field, the cross-sections of the first core piece 110, the second core piece 120, and the third core piece 130 of the core assembly 100 shown in the present application are annular.

[0065] Reference Figure 3 In the present application, when an insulating baffle 300 is disposed between the third magnetic core member 130 and the first magnetic core member 110, a limiting groove 140 is disposed between the first magnetic core member 110 and the third magnetic core member 130. The limiting groove 140 is connected to the first installation groove 1101 and is disposed along the circumference of the magnetic core assembly 100 to position and install the insulating baffle 300. Specifically, the limiting groove 140 is disposed on an end surface of the first magnetic core member 110 close to the third magnetic core member 130, and / or the limiting groove 140 is disposed on an end surface of the third magnetic core member 130 close to the first magnetic core member 110.

[0066] When the insulating baffle 300 is disposed between the third magnetic core member 130 and the second magnetic core member 120, a limiting groove 140 is disposed between the second magnetic core member 120 and the third magnetic core member 130. The limiting groove 140 is communicated with the second installation groove 1201 and is disposed along the circumference of the magnetic core assembly 100 to position and install the insulating baffle 300. Specifically, the limiting groove 140 is disposed on an end surface of the second magnetic core member 120 close to the third magnetic core member 130, and / or the limiting groove 140 is disposed on an end surface of the third magnetic core member 130 close to the second magnetic core member 120.

[0067] By setting the limiting groove 140, the insulating baffle 300 can be positioned and installed to avoid position displacement of the insulating baffle 300, so as to adjust the inductance through the insulating baffle 300 to avoid mutual coupling between the first inductor 210 and the second inductor 220. While positioning the insulating baffle 300, the third magnetic core component 130 and the first magnetic core component 110, and the third magnetic core component 130 and the second magnetic core component 120 can also be tightly connected, so that the overall structure of the magnetic core assembly 100 is more stable.

[0068] Reference Figures 1 to 8 In the present application, the magnetic core assembly 100 is provided with a magnetic core hole 160 .

[0069] In a specific embodiment of the present application, when an insulating baffle 300 is disposed between the third magnetic core member 130 and the first magnetic core member 110, the first magnetic core member 110 includes a first annular wall 1102 and a second annular wall 1103 disposed coaxially, and the first mounting groove 1101 is formed between the first annular wall 1102 and the second annular wall 1103. The magnetic core assembly 100 is provided with a magnetic core hole 160,

[0070] One of the first annular wall 1102 and the second annular wall 1103 is an inner annular wall, and the other is an outer annular wall. For example, the first annular wall 1102 is an outer annular wall, and the second annular wall 1103 is an inner annular wall. Correspondingly, the first magnetic core 110 is provided with a magnetic core hole 160, so that the first magnetic core 110 is annular, the first annular wall 1102 is arranged along the outer peripheral wall of the first magnetic core 110, and the second annular wall 1103 is arranged along the inner peripheral wall of the first magnetic core 110. Specifically, the second annular wall 1103 and the first annular wall 1102 are arranged on the same end surface of the first magnetic core 110. The height of the first annular wall 1102 is less than the height of the second annular wall 1103, and the limiting groove 140 is arranged on the first annular wall 1102; or the height of the second annular wall 1103 is less than the height of the first annular wall 1102, and the limiting groove 140 is arranged on the second annular wall 1103.

[0071] In another specific embodiment of the present application, when an insulating baffle 300 is disposed between the third magnetic core member 130 and the second magnetic core member 120, the second magnetic core member 120 includes a third annular wall 1202 and a fourth annular wall 1203 disposed coaxially, and the second mounting groove 1201 is formed between the third annular wall 1202 and the fourth annular wall 1203. The magnetic core assembly 100 is provided with a magnetic core hole 160,

[0072] One of the third annular wall 1202 and the fourth annular wall 1203 is an inner annular wall and the other is an outer annular wall. For example, the third annular wall 1202 is an outer annular wall and the fourth annular wall 1203 is an inner annular wall. Correspondingly, the second magnetic core member 120 is provided with a magnetic core hole 160, so that the second magnetic core member 120 is annular, the third annular wall 1202 is arranged along the outer peripheral wall of the second magnetic core member 120, and the fourth annular wall 1203 is arranged along the inner peripheral wall of the second magnetic core member 120. Specifically, the third annular wall 1202 and the fourth annular wall 1203 are arranged on the same end surface of the second magnetic core member 120. The height of the third annular wall 1202 is less than the height of the fourth annular wall 1203, and the limiting groove 140 is arranged on the third annular wall 1202; or the height of the fourth annular wall 1203 is less than the height of the third annular wall 1202, and the limiting groove 140 is arranged on the fourth annular wall 1203.

[0073] The first mounting groove 1101 is formed by enclosing the first annular wall 1102 and the second annular wall 1103 to stably position the first inductor 210, and the second mounting groove 1201 is formed by enclosing the fourth annular wall 1203 and the third annular wall 1202 to stably position the second inductor 220. The limiting groove 140 is formed by the height difference between the inner annular wall and the outer annular wall. The limiting groove 140 is connected to the mounting groove and is used to form an air gap between the third magnetic core member 130 and the first magnetic core member 110, and between the third magnetic core member 130 and the second magnetic core member 120. The inductance is adjusted by the insulating baffle 300 provided in the limiting groove 140, so that the magnetic flux of the first inductor 210 and the second inductor 220 are parallel to avoid mutual coupling between the two, and further realize the common back decoupling of the resonant inductor, so as to meet the requirement of common back magnetic flux subtraction when the magnetic core device and the transformer are working in bidirectional conversion.

[0074] The limiting groove 140 formed by the height difference between the inner ring wall and the outer ring wall plays a role of limiting and sealing, so that the third magnetic core member 130 and the first magnetic core member 110, the third magnetic core member 130 and the second magnetic core member 120 are closely connected through the insulating barrier sheet 300, so as to further isolate the first inductor coil 210 and the second inductor coil 220, and seal the first inductor coil 210 between the third magnetic core member 130 and the first magnetic core member 110, and seal the second inductor coil 220 between the third magnetic core member 130 and the second magnetic core member 120, so as to avoid the positional displacement of the first inductor coil 210 and the second inductor coil 220. Such a configuration can also facilitate processing and production, and avoid the problem of complex structure and inconvenient processing and installation caused by the need to set up a positioning structure corresponding to the insulating barrier sheet 300.

[0075] Reference Figures 1 to 5 As an example of the present application, the first magnetic core 110, the second magnetic core 120 and the third magnetic core 130 are independently arranged. The first magnetic core 110, the second magnetic core 120 and the third magnetic core 130 are combined into one by means of snap connection, sleeve connection, bonding, etc. to construct the magnetic core assembly shown in this application.

[0076] In this example, an insulating baffle 300 is provided on at least one side of the first magnetic core member, that is, an insulating baffle 300 is provided between the third magnetic core member 130 and the first magnetic core member 110, and / or an insulating baffle 300 is provided between the third magnetic core member 130 and the second magnetic core member 120. Specifically, a plurality of mounting grooves such as the first mounting groove and the second mounting groove can be provided on the peripheral side of the magnetic core component or other positions in the magnetic core component, so that the first mounting groove 1101 is provided on the first magnetic core member 110 or the first mounting groove 1101 is provided between the first magnetic core member 110 and the third magnetic core member 130, and the second mounting groove 1201 is provided on the second magnetic core member 130 or the second mounting groove 1201 is provided between the second magnetic core member 120 and the third magnetic core member 130, which is not limited here.

[0077] Reference Figures 6 to 8 As another example of the present application, at least part of the first magnetic core member 110, the second magnetic core member 120 and the third magnetic core member 130 are connected as one body. It can be understood that the first magnetic core member 110 and the third magnetic core member 130 can be optionally set as an integral structure, and the first magnetic core member 110 and the third magnetic core member 130 are connected and combined with the second magnetic core member as a whole by means of clamping, sleeve connection, bonding, etc.; or, the third magnetic core member 130 and the second magnetic core member 120 are an integral structure, and the third magnetic core member 130 and the second magnetic core member 120 are connected and combined with the first magnetic core member as a whole by means of clamping, sleeve connection, bonding, etc.; or, the first magnetic core member 110, the second magnetic core member 120 and the third magnetic core member 130 are an integrally formed structure.

[0078] In this example, an insulating baffle 300 is provided between the third magnetic core member 130 and the first magnetic core member 110, and / or an insulating baffle 300 is provided between the third magnetic core member 130 and the second magnetic core member 120. Specifically, a plurality of mounting grooves such as the first mounting groove and the second mounting groove can be provided on the peripheral side of the magnetic core assembly 100 or other positions of the magnetic core assembly 100, so that the first mounting groove 1101 is provided on the first magnetic core member 110 or the first mounting groove 1101 is provided between the first magnetic core member 110 and the third magnetic core member 130, and the second mounting groove 1201 is provided on the second magnetic core member 120 or the second mounting groove 1201 is provided between the second magnetic core member 120 and the third magnetic core member 130, which is not limited here.

[0079] When the first magnetic core member 110, the second magnetic core member 120 and the third magnetic core member 130 are independently arranged, for the convenience of processing, as an example of the present application, the first magnetic core member 110 has a first end face and a second end face opposite to each other, and the first installation groove 1101 is arranged on the first end face of the first magnetic core member 110. In the assembled state, the first end face of the first magnetic core member 110 abuts against the second end face of the third magnetic core member 130, and the first inductor 210 is installed in the space enclosed by the second end face of the third magnetic core member 130 and the first installation groove 1101. Optionally, the first mounting groove 1101 can be set as a groove, and the first mounting groove 1101 is extended from the first end surface of the first magnetic core member 110 to the middle part of the first magnetic core member 110 along the axial direction of the magnetic core assembly 100; or, the first mounting groove 1101 is set in the form of an annular groove, a clamping groove, etc. on the first end surface of the first magnetic core member 110; or, the first mounting groove 1101 can be constructed on the first end surface of the first magnetic core member 110 by attaching a blocking member, a surrounding plate, a clamping member, a protrusion, etc. to the first magnetic core member 110. The second mounting groove 1201 is set at any position between the third magnetic core member 130 and the second magnetic core member 120, and the position of the second mounting groove 1201 corresponds to the position of the first mounting groove 1101.

[0080] As another example of the present application, the second magnetic core member 120 has a first end face and a second end face opposite to each other, and the second mounting groove 1201 is provided on the second end face of the second magnetic core member 120. In the assembled state, the second end face of the second magnetic core member 120 abuts against the first end face of the third magnetic core member 130, and the second inductor 220 is installed in the space enclosed by the first end face of the third magnetic core member 130 and the second mounting groove 1201. The first mounting groove 1101 is provided at any position between the third magnetic core member 130 and the first magnetic core member 110, and the position of the first mounting groove 1101 corresponds to the position of the second mounting groove 1201. The specific implementation example of the second mounting groove 1201 refers to the aforementioned first mounting groove 1101, which will not be repeated here.

[0081] As another example of the present application, in the assembled state, the first end face of the first magnetic core component 110 abuts against the second end face of the third magnetic core component 130, and the second end face of the second magnetic core component 120 abuts against the first end face of the third magnetic core component 130. When a first mounting groove 1101 is provided on the first end face of the first magnetic core component 110 and a second mounting groove 1201 is provided on the second end face of the second magnetic core component 120, the first inductor coil 210 is installed in the space enclosed by the second end face of the third magnetic core component 130 and the first mounting groove 1101, and the second inductor coil 220 is installed in the space enclosed by the first end face of the third magnetic core component 130 and the second mounting groove 1201.

[0082] In the present application, during assembly, the first inductor 210 can be installed in the first installation groove 1101 of the first magnetic core member 110, and the insulating baffle 300 can be installed in the limiting groove 140 of the first magnetic core member 110. After the second inductor 220 is installed in the second installation groove 1201 of the second magnetic core member 120, the insulating baffle 300 can be installed in the limiting groove 140 of the second magnetic core member 120, and the third magnetic core member 130 can be connected with the first magnetic core member 110 and the second magnetic core member 130. After one of the two is connected, the other is connected to the third magnetic core 130; or, after the first inductor 210 is installed on the first magnetic core 110 and the second inductor 220 is installed on the second magnetic core 120, the insulating baffle 300 is placed at the corresponding position of the third magnetic core 130, and the third magnetic core 130 is connected to the first magnetic core 110 and the second magnetic core 120 respectively to complete the connection and installation of the magnetic core assembly 100. The installation order of the magnetic core assembly 100 can be adjusted according to actual conditions, and will not be repeated here.

[0083] Taking the first installation groove 1101 being arranged on the first end surface of the first magnetic core member 110 and the second installation groove 1201 being arranged on the second end surface of the second magnetic core member 120 as an example, two, three or more inductor coils can be installed according to the actual number of magnetic core components 100 .

[0084] As an example of the present application document, the first magnetic core member 110 and the second magnetic core member 120 are one, the first end surface of the first magnetic core member 110 is provided with a first mounting groove 1101, the first inductor 210 is installed in the first mounting groove 1101 of the first magnetic core member 110, the second end surface of the second magnetic core member 120 is provided with a second mounting groove 1201, the second inductor 220 is installed in the second mounting groove 1201 of the second magnetic core member 120, and the third magnetic core member 130 is provided between the first magnetic core member 110 and the second magnetic core member 120 to separate the first inductor 210 and the second inductor 220.

[0085] Furthermore, an insulating barrier sheet 300 is disposed between the third magnetic core piece 130 and the first magnetic core piece 110 , and an insulating barrier sheet 300 is disposed between the third magnetic core piece 130 and the second magnetic core piece 120 .

[0086] As another example of the present application document, there are multiple first magnetic core pieces 110, and the multiple first magnetic core pieces 110 are stacked in order from bottom to top, the second magnetic core piece 120 is stacked on the top first magnetic core piece 110, and the third magnetic core piece 130 is blocked between the second magnetic core piece 120 and the top first magnetic core piece 110. Among them, the first end surface of the first magnetic core piece 110 is provided with a first mounting groove 1101, there are multiple first inductor coils 210, and the multiple first inductor coils 210 are installed one-to-one in the first mounting grooves 1101 of the multiple first magnetic core pieces 110, the second end surface of the second magnetic core piece 120 is provided with a second mounting groove 1201, and the second inductor coil 220 is installed in the second mounting groove 1201 of the second magnetic core piece 120.

[0087] Furthermore, an insulating barrier sheet 300 is disposed between the third magnetic core piece 130 and the first magnetic core piece 110 , between the third magnetic core piece 130 and the second magnetic core piece 120 , and between any two adjacent first magnetic core pieces 110 .

[0088] As another example of the present application document, there are multiple second magnetic core pieces 120, and the multiple second magnetic core pieces 120 are stacked in order from bottom to top, the first magnetic core piece 110 is stacked under the second magnetic core piece 120 of the lowest layer, and the third magnetic core piece 130 is blocked between the second magnetic core piece 120 of the lowest layer and the first magnetic core piece 110. Among them, the first end surface of the first magnetic core piece 110 is provided with a first mounting groove 1101, and the first inductor 210 is installed in the first mounting groove 1101 of the first magnetic core piece 110, and the second end surface of the second magnetic core piece 120 is provided with a second mounting groove 1201, and there are multiple second inductor coils 220, and the multiple second inductor coils 220 are installed one-to-one in the second mounting grooves 1201 of the multiple second magnetic core pieces 120.

[0089] Furthermore, an insulating barrier sheet 300 is disposed between the third magnetic core piece 130 and the first magnetic core piece 110 , between the third magnetic core piece 130 and the second magnetic core piece 120 , and between any two adjacent second magnetic core pieces 120 .

[0090] As another example of the present application, the first magnetic core member 110 is provided with a plurality of first mounting grooves 1101, the second magnetic core member 120 is provided with a second mounting groove 1201, and the third magnetic core member 130 is provided between the first magnetic core member 110 and the second magnetic core member 120 to separate the first inductor 210 and the second inductor 220. Among them, a plurality of first mounting grooves 1101 are provided along the axial direction of the first magnetic core member 110, and a magnetic core piece is provided between two adjacent first mounting grooves 1101. There are a plurality of first inductor 210, and a plurality of first inductor 210 are installed one-to-one in the corresponding plurality of first mounting grooves 1101. An insulating baffle 300 is provided on one side of the first inductor 210 close to the adjacent inductor 200 (the first inductor 210 or the second inductor 220). Similarly, a plurality of second mounting grooves 1201 may also be provided on the second magnetic core member 120. For details, reference may be made to the example in which the first magnetic core member 110 is provided with a plurality of first mounting grooves 1101, which will not be described in detail here.

[0091] Reference Figures 1 to 3 In one embodiment, the transformer coil assembly 400 includes at least two coils, and the at least two coils are sequentially wound outside the magnetic core assembly 100 from the inside to the outside along the circumference of the magnetic core assembly 100. The magnetic flux direction of the transformer coil assembly is perpendicular to the magnetic flux direction of the inductor coil, and the magnetic flux is completely symmetrical in the forward and reverse directions.

[0092] It can be understood that the transformer coil assembly 400 includes two, three or other multiple coils, the multiple coils include a first coil 410 and a second coil 420, the first coil 410 and the second coil 420 are sequentially wound around the outside of the magnetic core assembly 100 from the inside to the outside along the circumference of the magnetic core assembly 100, and one of the first coil 410 and the second coil 420 is the primary coil of the transformer, and the other is the secondary coil of the transformer.

[0093] During assembly, after the installation of the magnetic core assembly 100 is completed, the inner coil is first wound along the circumference of the magnetic core assembly 100, and then the outer coil is wound, so that the magnetic flux directions of the first coil 410, the second coil 420 or other multiple coils of the transformer coil assembly 400 are perpendicular to the magnetic flux direction of the inductor coil 200, avoiding the heat dissipation problem caused by the superposition of magnetic flux. In this way, the weight and occupied space of the magnetic core device and the transformer can be reduced, and the power density can be improved. Winding multiple layers of coils along the circumference of the magnetic core assembly 100 can also ensure uniform distribution of magnetic flux, avoid fan-shaped winding or incomplete winding to cause leakage inductance or even affect the distribution of magnetic flux direction, so as to further optimize the decoupling effect.

[0094] As some alternative embodiments of the present application, the transformer coil assembly 400 includes a plurality of coils, at least some of the plurality of coils are arranged side by side, and the plurality of coils arranged side by side are wound outside the magnetic core assembly 100 along the circumference of the magnetic core assembly 100; or, the plurality of coils are wound outside the magnetic core assembly 100 in sequence from the inside to the outside along the circumference of the magnetic core assembly 100, at least some of the plurality of coils are composed of a plurality of windings arranged side by side, and the coil of the transformer coil assembly 400 has a first connection end and a second connection end, and the two ends of the plurality of windings of the same coil are respectively integrated on the corresponding first connection end and the second connection end. By winding a plurality of coils or a plurality of windings in parallel, the weight and occupied space of the magnetic core device and the transformer can be reduced, the power density can be improved, and the heat dissipation performance can be optimized.

[0095] In one embodiment, a notch 150 is provided on the magnetic core assembly 100, and the notch 150 is connected to the first mounting groove 1101 and the second mounting groove 1201, and is used to lead out the connection ends of the multiple inductor coils 200. Through the provision of the notch 150, the connection ends of the multiple inductor coils 200 provided in the magnetic core assembly 100 are led out of the mounting groove from the notch 150, and are used to connect with an external electrical device; the notch 150 can also interrupt the magnetic core, adjust the inductance, and avoid magnetic saturation of the magnetic core.

[0096] In the present application, taking the two inductors including the first inductor 210 and the second inductor 220 among the multiple inductors 200 as an example, by setting the notch 150, the first connection end and the second connection end of the first inductor 210 and the first connection end and the second connection end of the second inductor 220 are extended from the mounting groove of the magnetic core component 100 to the outside of the magnetic core component 100, and the magnetic core device is constructed into a CLLLC integrated transformer structure of a 4-port network.

[0097] In the present application, the notch 150 is connected to the first installation groove 1101 and the second installation groove 1201, the outer annular walls of the first magnetic core piece 110, the second magnetic core piece 120, and the third magnetic core piece 130 correspond to the outer annular wall of the magnetic core assembly 100, and the inner annular walls of the first magnetic core piece 110, the second magnetic core piece 120, and the third magnetic core piece 130 correspond to the inner annular wall of the magnetic core assembly 100. Specifically, the notch 150 is provided on the inner annular wall of the magnetic core assembly 100; or, the notch 150 is provided on the outer annular wall of the magnetic core assembly 100; or, the notch 150 is provided along the radial direction of the magnetic core assembly 100, extending from the inner annular wall of the magnetic core assembly 100 to the outer annular wall.

[0098] Reference Figure 4 , 5In some optional embodiments of the present application, a notch 150 or no notch 150 may be optionally provided on the insulating baffle 300. When the insulating baffle 300 is provided with a notch 150, it is convenient to install the inductor 200 and lead out the connection end of the inductor 200; when the insulating baffle 300 is not provided with a notch 150, the inductance is adjusted by providing an insulating baffle 300 between the third magnetic core member 130 and the first magnetic core member 110 (and / or providing an insulating baffle 300 between the third magnetic core member 130 and the second magnetic core member 120) to avoid mutual coupling between the first inductor 210 and the second inductor 220. While positioning the insulating baffle 300, the third magnetic core member 130 and the first magnetic core member 110, and the third magnetic core member 130 and the second magnetic core member 120 can also be tightly connected, so that the overall structure of the magnetic core assembly 100 is more stable.

[0099] In one embodiment, thermally conductive adhesive is filled between the inductor coil and the mounting groove. Specifically, thermally conductive adhesive is filled between the first inductor coil 210 and the first mounting groove 1101, and between the second inductor coil 220 and the second mounting groove 1201. By filling the thermally conductive adhesive between the inductor coil 200 and the mounting groove, the first inductor coil 210 can be stably installed in the first mounting groove 1101, and the second inductor coil 220 can be stably installed in the second mounting groove 1201. By filling the thermally conductive adhesive, the thermal conductivity can be optimized and the heat dissipation performance of the magnetic core device and the transformer can be further improved.

[0100] Specifically, the connection between the inductor 200 and the magnetic core member can be completed by filling thermally conductive glue when the first inductor 210 is installed in the first installation groove 1101 and the second inductor 220 is installed in the second installation groove 1201; or, in the magnetic core assembly 100, a glue injection position can be specifically opened on the first magnetic core member 110, the second magnetic core member 120 or the third magnetic core member 130, and after the first inductor 210 is installed in the first installation groove 1101 and the second inductor 220 is installed in the second installation groove 1201, the thermally conductive glue is poured into the first installation groove 1101 and the second installation groove 1201 through the glue injection position, so that the thermally conductive glue is filled between the first inductor 210 and the first installation groove 1101, and between the second inductor 220 and the second installation groove 1201. Optionally, the thermally conductive glue shown can specifically be a high thermal conductivity and low stress silica gel. The thermally conductive glue used and the method of filling the thermally conductive glue can be specifically set according to the actual setting, which is not limited here.

[0101] In the present application, the first inductor 210 and the second inductor 220 constitute a dual-resonance inductor, which is built into the magnetic core assembly 100 through a mounting groove. The primary and secondary resonant inductors formed by the first inductor 210 and the second inductor 220 share a magnetic circuit and are decoupled. By winding the transformer coil assembly 400 outside the magnetic core assembly 100, the magnetic flux direction of the transformer coil assembly 400 is perpendicular to the magnetic flux direction of the inductor 200, and the magnetic core device is constructed into an orthogonal magnetic field integrated transformer structure using dual-resonance inductors. The magnetic flux direction of the transformer coil assembly 400 is perpendicular to the magnetic flux direction of the inductor 200, ensuring uniform magnetic flux. In this way, the effective cross-sectional area Ae of the magnetic core and the volume of the magnetic core assembly 100 can also be reduced, and the weight of the magnetic core device can be further reduced.

[0102] The magnetic core component 100 of the magnetic core device exemplified in the present application is provided with a notch 150, and the notch 150 is connected to the first mounting groove 1101 and the second mounting groove 1201. The dual resonant inductors share a magnetic circuit and are decoupled in the magnetic core component 100. The mounting groove in the inner cavity of the magnetic core is filled with high thermal conductivity and low stress silicone. By combining the first magnetic core component 110, the second magnetic core component 120, and the third magnetic core component 130, a ring-shaped magnetic core component 100 with a notch 150 is constructed, and the lead wires and other connection ends of the resonant inductor inside the magnetic core component 100 are led out from the notch 150. On the ring-shaped magnetic core component 100 with a notch 150, a transformer coil component 400 such as a first coil 410 and a second coil 420 are sequentially wound from the inside to the outside along the circumference of the magnetic core component 100. The first coil 410 and the second coil 420 are connected as the primary coil of the transformer and the secondary coil of the transformer, respectively, and the magnetic core device is constructed into a CLLLC integrated transformer with a 4-port network. In the present application, the orthogonal magnetic flux of the magnetic core device is integrated, and the magnetic flux is completely symmetrical in the forward and reverse directions, so that the magnetic flux in the magnetic core component 100 is more uniform, and the volume and weight of the magnetic core component are reduced by reducing the actual effective cross-sectional area Ae of the magnetic core component, thereby meeting the lightweight requirements of the inductor.

[0103] Through experimental verification, the magnetic core devices produced by the structural improvement of the present application have an overall weight reduction of about 25%, a volume reduction of about 20%, and an overall cost reduction of about 10% compared with the existing common-back integrated structure and other transformers. In addition to achieving lightweight and small-volume design, it effectively reduces production costs and improves the market competitiveness of vehicle-mounted power supplies and other power supply devices.

[0104] Reference Figures 1 to 8 The utility model also provides a transformer, which includes the magnetic core device shown above.

[0105] In one embodiment, the magnetic core assembly 100 is provided with a magnetic core hole 160, and the transformer further includes a shell 500, at least one side of the shell 500 is open, and a connecting piece 510 is provided at the open position, and the magnetic core hole 160 is penetrated on the connecting piece 510 so that the transformer coil assembly 400 is at least partially received in the shell 500.

[0106] It can be understood that at least one side of the housing 500 is open to form a receiving groove 520, the connector 510 is disposed in the receiving groove 520, and the magnetic core hole 160 is penetrated on the connector 510, so that the magnetic core device is received in the receiving groove 520 of the housing 500. In the installed state, the housing 500 is partially or completely arranged to enclose the magnetic core device. The housing 500 is opened to dissipate heat through the opening, which can further optimize the heat dissipation performance of the transformer, improve the heat dissipation effect, and avoid heat accumulation affecting the use effect and service life of the transformer.

[0107] Furthermore, the shown shell 500 can be made of materials with good stability and heat dissipation such as aluminum alloy, and the connecting piece 510 is set to be columnar or other shapes suitable for actual use, and is made of materials with good heat dissipation such as ceramics and aluminum alloy to further optimize the heat dissipation effect and avoid heat accumulation.

[0108] To further optimize the heat dissipation effect and ensure that the magnetic core component is firmly connected to the housing 500 , in one embodiment, a thermal conductive adhesive is filled between the magnetic core component and the housing 500 .

[0109] The embodiments corresponding to the transformer are basically the same as the embodiments corresponding to the aforementioned magnetic core devices, and therefore will not be described in detail here.

[0110] The utility model also provides a power supply device, which includes a magnetic core device as shown in the above example or a transformer as shown in the above example. When applied to the power supply device, the magnetic core device can be directly connected to the power supply device, or connected to the power supply device through a housing 500.

[0111] Since the power supply device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, so they will not be described one by one here.

[0112] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A magnetic core device, characterized in that: include: A magnetic core assembly, wherein the magnetic core assembly has a plurality of installation slots arranged at intervals, the plurality of installation slots are coaxially arranged and positions correspond to each other; A plurality of inductor coils, wherein the plurality of inductor coils are installed one-to-one in a plurality of installation slots; A transformer coil component is wound around the magnetic core component along the circumference of the magnetic core component, so that the magnetic flux direction of the transformer coil component and the magnetic flux direction of the inductor are perpendicular to each other.

2. The magnetic core device according to claim 1, characterized in that: The magnetic core assembly at least comprises a first magnetic core member, a second magnetic core member and a third magnetic core member which are coaxially arranged, the plurality of mounting grooves comprises a first mounting groove arranged in the first magnetic core member and a second mounting groove arranged in the second magnetic core member, and the positions of the first mounting groove and the second mounting groove correspond to each other; The multiple inductors include a first inductor and a second inductor. The first inductor is installed in the first installation groove, and the second inductor is installed in the second installation groove. The third magnetic core is arranged between the first magnetic core and the second magnetic core to separate the first inductor and the second inductor.

3. The magnetic core device according to claim 2, characterized in that: The first magnetic core component, the second magnetic core component and the third magnetic core component are independently arranged; Alternatively, at least parts of the first magnetic core member, the second magnetic core member and the third magnetic core member are connected as one.

4. The magnetic core device according to claim 3, characterized in that: When the first magnetic core member, the second magnetic core member and the third magnetic core member are independently arranged, The first magnetic core member has a first end surface and a second end surface opposite to each other, and the first mounting groove is provided on the first end surface of the first magnetic core member; And / or, the second magnetic core member has a first end surface and a second end surface opposite to each other, and the second mounting groove is provided on the second end surface of the second magnetic core member.

5. The magnetic core device according to claim 4, characterized in that: There are multiple first magnetic core pieces, which are stacked in order from bottom to top, the second magnetic core piece is stacked on the top first magnetic core piece, and the third magnetic core piece is blocked between the second magnetic core piece and the top first magnetic core piece.

6. The magnetic core device according to claim 2, characterized in that: The magnetic core component further includes an insulating spacer, wherein the insulating spacer is disposed between the third magnetic core component and the first magnetic core component, and / or the insulating spacer is disposed between the third magnetic core component and the second magnetic core component.

7. The magnetic core device according to claim 6, characterized in that: When the insulating baffle is disposed between the third magnetic core component and the first magnetic core component, a limiting groove is disposed between the first magnetic core component and the third magnetic core component, the limiting groove is communicated with the first installation groove and is disposed along the circumference of the magnetic core component, so as to position and install the insulating baffle; When the insulating baffle is arranged between the third magnetic core component and the second magnetic core component, a limiting groove is arranged between the second magnetic core component and the third magnetic core component. The limiting groove is connected to the second installation groove and is arranged along the circumference of the magnetic core assembly to position and install the insulating baffle.

8. The magnetic core device according to claim 7, characterized in that: The magnetic core assembly is provided with a magnetic core hole; The first magnetic core member comprises a first annular wall and a second annular wall which are coaxially arranged, the first mounting groove is formed between the first annular wall and the second annular wall, the height of the first annular wall is smaller than the height of the second annular wall, and the limiting groove is arranged on the first annular wall; And / or, the second magnetic core member includes a coaxially arranged third annular wall and a fourth annular wall, the second mounting groove is formed between the third annular wall and the fourth annular wall, the height of the third annular wall is less than the height of the fourth annular wall, and the limiting groove is arranged on the third annular wall.

9. The magnetic core device according to claim 1, characterized in that: The transformer coil assembly includes at least two coils, and the at least two coils are sequentially wound outside the magnetic core assembly from inside to outside along the circumference of the magnetic core assembly.

10. The magnetic core device according to claim 1, characterized in that: The magnetic core component is provided with a notch, which is communicated with the plurality of mounting grooves and is used for leading out the connection ends of the plurality of inductor coils.

11. The magnetic core device according to any one of claims 1 to 10, characterized in that: The space between the inductor coil and the mounting groove is filled with heat-conducting glue.

12. A transformer, characterized in that: Comprising the magnetic core device as claimed in any one of claims 1 to 11.

13. The transformer according to claim 12, characterized in that: The magnetic core assembly is provided with a magnetic core hole, and the transformer also includes a shell, at least one side of the shell is open, a connecting piece is provided at the open position, and the magnetic core hole is penetrated on the connecting piece so that the transformer coil assembly is at least partially accommodated in the shell.

14. The transformer according to claim 13, characterized in that: Thermal conductive glue is filled between the magnetic core component and the shell.

15. A power supply device, characterized in that: The invention comprises a magnetic core device as claimed in any one of claims 1 to 11 or a transformer as claimed in any one of claims 12 to 14.

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