Potting parallel type energy storage transformer-resonant inductor combined structure

Abstract

The utility model discloses a potting parallel type energy storage transformer-resonant inductor combined structure. Comprising a first energy storage transformer, a first resonant inductor connected with the first energy storage transformer in series, a second energy storage transformer, a second resonant inductor connected with the second energy storage transformer in series, and a PCB used for installing the first energy storage transformer, the first resonant inductor, the second energy storage transformer and the second resonant inductor. The first energy storage transformer and the first resonant inductor are connected in series to form a first combined structure, the second energy storage transformer and the second resonant inductor are connected in series to form a second combined structure, two U-shaped containing grooves are formed in the aluminum shell, and the first combined structure and the second combined structure are installed in the U-shaped containing grooves respectively. And the U-shaped accommodating groove is filled with heat-conducting glue. The problems that an existing structure is large in size, high in temperature and low in heat dissipation efficiency can be solved, the overall size is effectively reduced, the heat dissipation effect is improved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer and inductor production and potting, and in particular to a potting parallel energy storage transformer-resonant inductor combined structure. Background Art

[0002] At present, energy storage transformer products all have the characteristics of large current, large volume, and high temperature rise. When the energy storage transformer and the resonant inductor are connected in series, they are generally connected in series by welding to the PCB board and through the circuit of the PCB board. When two sets of series energy storage transformers and resonant inductor components need to be installed in parallel, the two sets of energy storage transformers and resonant inductors are generally directly installed on a PCB board through pins, and then fanned by structures such as fans. After the pins of the energy storage transformer and the resonant inductor are inserted into the PCB, they are generally fixed in a welding mode, resulting in overall heat dissipation difficulties. At the same time, the pins of the current energy storage transformer and the resonant inductor are generally connected by directly leading out the leads to the terminals, which makes it difficult to solve the electromagnetic interference problem. Therefore, a combined energy storage transformer-resonant inductor structure that can solve the heat dissipation problem and the electromagnetic interference problem is needed. Summary of the invention

[0003] In order to solve certain technical problems existing in the prior art, one of the purposes of the present application is to provide a potted parallel energy storage transformer-resonant inductor combination structure, which can solve the problems of large volume, high temperature and low heat dissipation efficiency of the existing structure, effectively reduce the overall volume, accelerate the heat dissipation effect, and improve work efficiency.

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

[0005] A potted parallel energy storage transformer-resonant inductor combination structure includes a first energy storage transformer, a first resonant inductor arranged in series with the first energy storage transformer, a second energy storage transformer, a second resonant inductor arranged in series with the second energy storage transformer, and a PCB board for mounting the first energy storage transformer, the first resonant inductor, the second energy storage transformer and the second resonant inductor, the first energy storage transformer and the first resonant inductor are connected in series to form a first combination structure, the second energy storage transformer and the second resonant inductor are connected in series to form a second combination structure, and also includes an aluminum shell, the aluminum shell is provided with two U-shaped storage grooves, the first combination structure and the second combination structure are respectively installed in the U-shaped storage grooves, and the U-shaped storage grooves are filled with thermal conductive adhesive.

[0006] Preferably, the PCB board is composed of four PCBA boards, and the four PCBA boards are used to install the first energy storage transformer, the first resonant inductor, the second energy storage transformer and the second resonant inductor respectively.

[0007] Preferably, the PCBA board is embedded in the aluminum shell, and the aluminum shell and the PCBA board are pre-fixed by studs that are removed later and then injected with glue.

[0008] Preferably, the first combined structure and the second combined structure are connected in series via leads to the corresponding PCBA boards.

[0009] Preferably, at least one side of the aluminum shell is provided with a heat dissipation structure protruding outward.

[0010] Preferably, the heat dissipation structure comprises a plurality of heat dissipation fins arranged parallel to each other, and a heat dissipation channel is formed between two adjacent heat dissipation fins.

[0011] Preferably, the winding wires of the first resonant inductor and the second resonant inductor are φ0.10*1250 film-wrapped twisted wires, and the winding wires of the first energy storage transformer and the second energy storage transformer are φ0.10*450 film-wrapped twisted wires.

[0012] Preferably, a downwardly recessed guide groove is provided on the partition between two adjacent U-shaped storage grooves.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The two independent first combination structures and the second combination structures are filled with thermally conductive adhesive and fixed in the U-shaped storage groove in the aluminum shell. The two independent energy storage transformer-resonant inductor combinations can be quickly connected in parallel through an external line. During use, the heat generated by the first combination structure and the second combination structure can be quickly conducted to the outside of the aluminum shell through the thermally conductive adhesive and dissipated, thereby solving the problem that the existing large current parallel structure of the energy storage transformer-resonant inductor combination itself is difficult to dissipate heat after rapid heating, which can significantly reduce the temperature rise rate and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] In the figure: 1. Aluminum shell; 2. Second resonant inductor; 3. Second energy storage transformer; 4. Guide groove; 5. First energy storage transformer; 6. U-shaped storage groove; 7. Thermal conductive adhesive; 8. First resonant inductor; 9. PCB board; 10. PCBA board; 11. Heat dissipation structure; 12. Heat sink; 13. Heat dissipation channel. DETAILED DESCRIPTION

[0017] 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.

[0018] 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.

[0019] 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.

[0020] like Figure 1 As shown, a potted parallel energy storage transformer-resonant inductor combination structure includes a first energy storage transformer 5, a first resonant inductor 8 arranged in series with the first energy storage transformer 5, a second energy storage transformer 3, a second resonant inductor 2 arranged in series with the second energy storage transformer 3, and a PCB board 9 for mounting the first energy storage transformer 5, the first resonant inductor 8, the second energy storage transformer 3, and the second resonant inductor 2, wherein the first energy storage transformer 5 and the first resonant inductor 8 are connected in series to form a first combination structure, and the second energy storage transformer 3 and the second resonant inductor 2 are connected in series to form a second combination structure, and also includes an aluminum shell 1, wherein two U-shaped receiving grooves 6 are arranged in the aluminum shell 1, and the first combination structure and the second combination structure are respectively installed in the U-shaped receiving grooves 6, and the U-shaped receiving grooves 6 are filled with thermal conductive adhesive 7.

[0021] In the actual assembly process, the first energy storage transformer 5 and the first resonant inductor 8 are connected in series to form a first combination structure, and the second energy storage transformer 3 and the second resonant inductor 2 are connected in series to form a second combination structure. The first combination structure and the second combination structure are two independent energy storage transformer-resonant inductor combinations and are installed in the U-shaped storage groove 6 in the aluminum shell 1, and then potted by filling with thermal conductive glue 7. Through the external circuit, the two independent energy storage transformer-resonant inductor combinations can be quickly connected in parallel. During use, the heat generated by the first combination structure and the second combination structure can be quickly exported to the outside of the aluminum shell 1 through the thermal conductive glue 7 and dissipated, thereby solving the problem that the energy storage transformer-resonant inductor combination of the existing large current parallel structure itself is difficult to dissipate heat after rapid temperature rise, which can significantly reduce the temperature rise rate and improve work efficiency. The two U-shaped storage grooves 6 distributed on the left and right form a partial structure that is independent and finally connected in parallel to achieve a small power to high power upgrade, solving the problem of large volume of high-power transformers and resonant inductors.

[0022] Further improvement is that the PCB board 9 is composed of four PCBA boards 10, and the four PCBA boards 10 are respectively used to install the first energy storage transformer 5, the first resonant inductor 8, the second energy storage transformer 3 and the second resonant inductor 2; the PCBA board 10 is embedded in the aluminum shell 1, and the aluminum shell 1 and the PCBA board 10 are pre-fixed by studs that are removed later and then injected with glue.

[0023] The existing large PCB board 9 is assembled by four smaller PCBA boards 10, so that the overall volume of the PCB board 9 is smaller and heat accumulation will not be formed. Especially when the PCBA board 10 is embedded in the opening of the aluminum shell 1, the PCBA board 10 can not only fix the relative positions of the first energy storage transformer 5, the first resonant inductor 8, the second energy storage transformer 3 and the second resonant inductor 2, but also facilitate the connection and fixation with the aluminum shell 1. When assembled, the PCBA board 10 can be disassembled and assembled only by screws.

[0024] Since there will be tolerance when connecting copper pillars when the fixing structures such as screws are not removed, when the tolerance is large, the copper pillars will be subjected to excessive stress, which may easily break the joint or connecting board. Therefore, the aluminum shell 1 and the PCBA board 10 are pre-fixed by studs that will be removed later and then injected with glue. After the injection is completed, the studs are removed, so that the thermal conductive glue 7 can conduct heat to the PCBA board 10 to avoid heat accumulation on the PCBA board 10, which improves the overall heat dissipation effect and work efficiency. The entire structure can avoid the occurrence of tolerance when connecting copper pillars, ensuring the service life of the copper pillars. At the same time, the optimization of electromagnetic interference EMC to reduce conducted radiation interference is achieved. The resonant inductor and the transformer can be directly connected in series, reducing the wiring burden of the PCB board 9.

[0025] A further improvement is that the first combined structure and the second combined structure are connected in series via leads to the corresponding PCBA boards 10 .

[0026] After the aluminum shell 1 is potted with the thermal conductive adhesive 7, the potted thermal conductive adhesive 7 allows the lead to penetrate into the wire package, thereby conducting heat from the inside and transferring it to the aluminum shell 1 for heat dissipation, effectively eliminating the problem of electromagnetic interference caused by the lead.

[0027] A further improvement is that at least one side of the aluminum shell 1 is provided with a heat dissipation structure 11 protruding outward; the heat dissipation structure 11 includes a plurality of heat dissipation fins 12 arranged parallel to each other, and a heat dissipation channel 13 is formed between two adjacent heat dissipation fins 12 .

[0028] The protruding position of the heat dissipation structure 11 is adjusted according to different installation spaces, thereby increasing the heat dissipation area of ​​the aluminum shell 1. After the thermal conductive adhesive 7 exports the internal heat to the surface of the aluminum shell 1, the heat dissipation structure 11 protruding outward can dissipate the heat to the surrounding again, thereby solving the problem of poor heat dissipation. In particular, when the heat dissipation structure 11 is composed of a number of heat dissipation fins 12 arranged parallel to each other, a heat dissipation channel 13 can be formed by two adjacent heat dissipation fins 12, so that when the fan flows the airflow, it can quickly take away the heat on the surface of the heat dissipation fin 12, thereby achieving the purpose of rapid heat dissipation.

[0029] A further improvement is that the windings of the first resonant inductor 8 and the second resonant inductor 2 are φ0.10*1250 film-wrapped twisted wires, and the windings of the first energy storage transformer 5 and the second energy storage transformer 3 are φ0.10*450 film-wrapped twisted wires; the influence of the skin effect is reduced, the efficiency is improved, and the safety hazards between the windings are reduced.

[0030] 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 potting parallel energy storage transformer-resonant inductor combination structure, characterized in that: The invention comprises a first energy storage transformer (5), a first resonant inductor (8) connected in series with the first energy storage transformer (5), a second energy storage transformer (3), a second resonant inductor (2) connected in series with the second energy storage transformer (3), and a PCB board (9) for mounting the first energy storage transformer (5), the first resonant inductor (8), the second energy storage transformer (3), and the second resonant inductor (2), wherein the first energy storage transformer (5) and the first resonant inductor (8) are connected in series to form a first combined structure, and the second energy storage transformer (3) and the second resonant inductor (2) are connected in series to form a second combined structure. The invention also comprises an aluminum shell (1), wherein two U-shaped receiving grooves (6) are provided in the aluminum shell (1), wherein the first combined structure and the second combined structure are respectively mounted in the U-shaped receiving grooves (6), and wherein the U-shaped receiving grooves (6) are filled with thermal conductive adhesive (7).

2. A potted parallel energy storage transformer-resonant inductor combined structure according to claim 1, characterized in that: The PCB board (9) is composed of four PCBA boards (10), and the four PCBA boards (10) are respectively used to install a first energy storage transformer (5), a first resonant inductor (8), a second energy storage transformer (3) and a second resonant inductor (2).

3. A potted parallel energy storage transformer-resonant inductor combination structure according to claim 2, characterized in that: The PCBA board (10) is embedded in the aluminum shell (1), and the aluminum shell (1) and the PCBA board (10) are pre-fixed by studs that are removed later and then injected with glue.

4. The encapsulated parallel energy storage transformer-resonant inductor combined structure according to claim 3 is characterized in that: The first combined structure and the second combined structure are both connected in series via leads to the corresponding PCBA boards (10).

5. The encapsulated parallel energy storage transformer-resonant inductor combined structure according to claim 1, characterized in that: At least one side of the aluminum shell (1) is provided with a heat dissipation structure (11) protruding outwards.

6. The encapsulated parallel energy storage transformer-resonant inductor combined structure according to claim 5, characterized in that: The heat dissipation structure (11) comprises a plurality of heat dissipation fins (12) arranged parallel to each other, and a heat dissipation channel (13) is formed between two adjacent heat dissipation fins (12).

7. The encapsulated parallel energy storage transformer-resonant inductor combined structure according to claim 1, characterized in that: The winding wires of the first resonant inductor (8) and the second resonant inductor (2) are φ0.10*1250 film-wrapped twisted wires, and the winding wires of the first energy storage transformer (5) and the second energy storage transformer (3) are φ0.10*450 film-wrapped twisted wires.

8. The encapsulated parallel energy storage transformer-resonant inductor combined structure according to claim 1, characterized in that: A downwardly recessed guide groove (4) is provided on the partition between two adjacent U-shaped storage grooves (6).

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