High-power integrated transformer

Abstract

The utility model discloses a high-power integrated transformer. Comprising a first framework, a first groove, a main transformer coil, two first magnetic cores, a second framework, a second groove and an inductance coil, wherein the first groove is formed in the first framework; the main transformer coil is wound on the first groove; the two first magnetic cores are arranged on two sides of the first framework; the first magnetic core is arranged on one side of the first framework, the second magnetic core is arranged on the other side of the second framework, the first framework, the main transformer coil and the two first magnetic cores are combined to form a transformer, and the first magnetic cores, the inductance coil and the second magnetic core are combined to form a resonant inductor. The problems that an existing transformer is poor in heat dissipation, large in occupied plate area after being installed and troublesome in installation technology can be solved, the back size of a single magnetic core is saved, the occupied plate area of a product is reduced, and meanwhile loss of the magnetic core can be synchronously reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of high-power integrated transformers, in particular to a high-power integrated transformer. Background Art

[0002] At present, in the field of on-board chargers and energy storage, there is a very high requirement for the loss and temperature rise of high-power integrated transformers. Conventional products wrap the coil with a magnetic core, and the magnetic core and coil are wrapped with tape to form a whole, which is very bad for the heat dissipation of the coil. A complete switching power supply often requires at least one inductor and at least one transformer. In traditional components, inductors and transformers are independent components with many devices and troublesome installation. They need to be welded separately in the switching power supply, resulting in the switching power supply being too large and occupying a large board area, which limits the demand for high power density, high cost and troublesome process. Summary of the invention

[0003] In order to solve one or some technical problems existing in the prior art, the purpose of the present application is to provide a high-power integrated transformer, which can solve the problems of poor heat dissipation of existing transformers, large board area after installation and complicated installation process, save the back size of a single magnetic core, reduce the board area of ​​the product, and at the same time, the loss of this part of the magnetic core can also be reduced synchronously.

[0004] In order to solve the above existing technical problems, this application adopts the following technical solutions:

[0005] A high-power integrated transformer comprises a skeleton 1, a first groove arranged on the skeleton 1, a main transformer coil wound on the first groove, two first magnetic cores arranged on both sides of the skeleton 1, a skeleton 2 arranged on one side of one of the first magnetic cores, a second groove arranged on the skeleton 2, an inductor coil wound on the second groove, and a second magnetic core arranged on the other side of the skeleton 2. The skeleton 1, the main transformer coil and the two first magnetic cores form a transformer in combination, and the first magnetic core, the inductor coil and the second magnetic core form a resonant inductor in combination.

[0006] Preferably, the skeleton one and the skeleton two are each composed of two independent small skeletons, the first groove and the second groove are both arranged on the small skeletons, the main transformer coil and the inductor coil adopt two groups and are respectively wound on each of the small skeletons, the first magnetic core and the second magnetic core both adopt U-shaped magnetic cores, and the small skeletons after winding the wires are installed on the side feet of each magnetic core.

[0007] Preferably, the sides of the two small frames combined with each other are both provided with L-shaped slots and L-shaped protrusions, and the two small frames are locked by the L-shaped protrusions corresponding to the L-shaped slots.

[0008] Preferably, one side of the bottom lead frames of the two small skeletons combined with each other is respectively provided with a U-shaped groove and a U-shaped block protruding outwards.

[0009] Preferably, a first gasket is provided between the two first magnetic cores, and the breath size of the transformer is adjusted by the first gasket.

[0010] Preferably, a second gasket is provided at the end of the second magnetic core, and the size of the resonant inductor is adjusted by the second gasket.

[0011] Preferably, the first gasket and the second gasket are both made of one of a PCB board, a ceramic sheet or a silicone pad.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] Integrating the resonant core and the main transformer core together on the back saves the back size of a single core and reduces the total volume of the two. Especially when installed on a circuit board, the transformer and resonant inductor can occupy a smaller board area. At the same time, the loss of this part of the core can also be reduced, which increases the demand for high power and density, reduces cost and makes the process simpler.

[0014] When the product is wound, the resonant inductor and the primary winding of the transformer are wound without cutting, which reduces the number of winding and welding and saves labor hours. At the same time, the small frame after the wire is wound is installed on the side of the magnetic core, so that the coil can directly dissipate heat, which is of great help to the overall temperature rise. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an exploded view of the utility model;

[0016] Figure 2 It is a schematic diagram of the combination of the utility model;

[0017] Figure 3 It is an exploded view of two small skeletons in the utility model;

[0018] In the figure: 1. first magnetic core; 2. first gasket; 3. skeleton one; 4. first groove; 5. main transformer coil; 6. skeleton two; 7. second groove; 8. inductor coil; 9. second gasket; 10. second magnetic core; 11. small skeleton; 12. U-shaped groove; 13. U-shaped block; 14. L-shaped slot; 15. L-shaped protrusion. DETAILED DESCRIPTION

[0019] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0020] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0021] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0022] like Figure 1 and Figure 2 As shown, a high-power integrated transformer includes a skeleton 3, a first groove 4 arranged on the skeleton 3, a main transformer coil 5 wound on the first groove 4, two first magnetic cores 1 arranged on both sides of the skeleton 3, a skeleton 6 arranged on one side of one of the first magnetic cores 1, a second groove 7 arranged on the skeleton 2 6, an inductor coil 8 wound on the second groove 7, and a second magnetic core 10 arranged on the other side of the skeleton 2 6. The skeleton 3, the main transformer coil 5 and the two first magnetic cores 1 are combined to form a transformer, and the first magnetic core 1, the inductor coil 8 and the second magnetic core 10 are combined to form a resonant inductor.

[0023] In the actual assembly process, the skeleton 1 3 and the skeleton 2 6 are arranged adjacent to each other, the main transformer coil 5 and the inductor coil 8 are respectively wound on the first groove 4 and the second groove 7, the two first magnetic suctions are respectively installed on both sides of the skeleton 1 3, and one of the first magnetic cores 1 is fixed and positioned by the skeleton 2 6, and the second magnetic core 10 is installed on one side of the skeleton 2 6, and a resonant inductor is formed by the second magnetic core 10 between the skeleton 1 3 and the skeleton 2 6. The transformer and the resonant inductor can be integrated into a combination, thereby reducing the number of magnetic cores of the resonant inductor and the total volume of the two, especially when installed on a circuit board, the transformer and the resonant inductor can occupy a smaller board area, which increases the demand for high power and density, lowers the cost and makes the process simpler.

[0024] A further improvement is that the skeleton one 3 and the skeleton two 6 are each composed of two independent small skeletons 11, the first groove 4 and the second groove 7 are both arranged on the small skeleton 11, the main transformer coil 5 and the inductor coil 8 adopt two groups and are respectively wound on each of the small skeletons 11, the first magnetic core 1 and the second magnetic core 10 are both U-shaped magnetic cores, and the small skeletons 11 after winding the wires are installed on the side feet of each magnetic core.

[0025] When the coils are wound, the main transformer coil 5 and the inductor coil 8 are respectively wound on their two small frames 11, and then the two corresponding small frames 11 are assembled to form a frame 1 3 and a frame 2 6, and then the two first magnetic cores 1 are inserted into the frame 1 3 through both sides, and the second magnetic core 10 is inserted to the back of the first magnetic core 1 through the outer side of the frame 2 6. Such coil winding can directly dissipate heat, which is of great help to the overall temperature rise; at the same time, when the product is wound, the resonant inductor and the primary winding of the transformer are wound without cutting, which reduces the number of winding feet and welding and saves labor time.

[0026] Further improvement is as follows: Figure 3 As shown, the sides of the two small frames 11 combined with each other are both provided with L-shaped slots 14 and L-shaped protrusions 15 , and the two small frames 11 are locked by the L-shaped slots 14 corresponding to the L-shaped protrusions 15 .

[0027] In order to prevent the two small skeletons 11 from separating when they are combined to form skeleton one 3 or skeleton two 6, an L-shaped groove 14 and an L-shaped protrusion 15 are formed between the two, and the side raised edges of the small skeleton 11 are provided with two pairs of L-shaped grooves 14 and L-shaped protrusions 15 connection structures, which can prevent the upper and lower parts from separating to the left and right after the two small skeletons 11 are combined, and make the relative connection between the two tighter.

[0028] As a further improvement, one side of the bottom lead frame of the two small frames 11 combined with each other is respectively provided with a U-shaped groove 12 and a U-shaped block 13 protruding outwards.

[0029] Since the raised edge of the small frame 11 is relatively thin, the stability between the two small frames 11 is poor after being assembled through the L-shaped slot 14 and the L-shaped protrusion 15, and the problem of misalignment of the installation position is prone to occur, which increases the difficulty of installation. Therefore, in order to avoid problems with the small frame 11 during installation, a U-shaped groove 12 and a U-shaped block 13 protruding outward are respectively formed on one side of the bottom pin frame of the two small frames 11 combined with each other. During assembly, it is only necessary to slide the two protruding U-shaped blocks 13 along the U-shaped groove 12. The cooperation of the U-shaped groove 12 and the U-shaped block 13 can naturally play a guiding and limiting role, thereby making the installation speed faster, the installation progress higher, and less prone to misalignment or mutual tilting.

[0030] A further improvement is that a first gasket 2 is provided between the two first magnetic cores 1, and the size of the transformer's breath is adjusted by the first gasket 2; a second gasket 9 is provided at the end of the second magnetic core 10, and the size of the resonant inductor's breath is adjusted by the second gasket 9; the first gasket 2 and the second gasket 9 are both made of one of a PCB board, a ceramic sheet or a silicone pad.

[0031] The first gasket 2 is located between the side feet of the two first magnetic cores 1, and the second gasket 9 is located between the side feet of the second magnetic core 10 and the back of the first magnetic core 1. The first gasket 2 and the second gasket 9 can more conveniently control the inductance. The first gasket 2 and the second gasket 9 are both made of one of a PCB board, a ceramic sheet or a silicone pad, with lower production costs and more convenient and accurate inductance control.

[0032] The above-mentioned implementation modes are only preferred implementation modes of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present application shall fall within the scope of protection required by the present application.

Claims

1. A high-power integrated transformer, characterized in that: The invention comprises a skeleton (3), a first groove (4) arranged on the skeleton (3), a main transformer coil (5) wound on the first groove (4), two first magnetic cores (1) arranged on both sides of the skeleton (3), a skeleton (6) arranged on one side of one of the first magnetic cores (1), a second groove (7) arranged on the skeleton (6), an inductor coil (8) wound on the second groove (7), and a second magnetic core (10) arranged on the other side of the skeleton (6); the skeleton (3), the main transformer coil (5) and the two first magnetic cores (1) are combined to form a transformer; the first magnetic core (1), the inductor coil (8) and the second magnetic core (10) are combined to form a resonant inductor.

2. A high-power integrated transformer according to claim 1, characterized in that: The first frame (3) and the second frame (6) are both composed of two independent small frames (11), the first groove (4) and the second groove (7) are both arranged on the small frame (11), the main transformer coil (5) and the inductor coil (8) are in two groups and are respectively wound on each of the small frames (11), the first magnetic core (1) and the second magnetic core (10) are both U-shaped magnetic cores, and the small frames (11) after winding the wires are installed on the side feet of each magnetic core.

3. A high-power integrated transformer according to claim 2, characterized in that: The sides of the two small frames (11) combined with each other are both provided with L-shaped slots (14) and L-shaped protrusions (15), and the two small frames (11) are locked together by the L-shaped slots (14) and the corresponding L-shaped protrusions (15).

4. A high-power integrated transformer according to claim 3, characterized in that: A U-shaped groove (12) and an outwardly protruding U-shaped clamping block (13) are respectively provided on one side of the bottom lead frame of the two small frames (11) combined with each other.

5. The high-power integrated transformer according to claim 1, characterized in that: A first gasket (2) is provided between the two first magnetic cores (1), and the breath size of the transformer is adjusted by the first gasket (2).

6. A high-power integrated transformer according to claim 5, characterized in that: A second gasket (9) is provided at the end of the second magnetic core (10), and the size of the resonant inductance is adjusted by the second gasket (9).

7. A high-power integrated transformer according to claim 6, characterized in that: The first gasket (2) and the second gasket (9) are both made of one of a PCB board, a ceramic sheet or a silicone pad.

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