Transformer assembly and power supply

Abstract

The utility model provides a transformer assembly and a power supply, the transformer assembly comprises a transformer body and at least two PCBs, the two PCBs are named as a first PCB and a second PCB, and the first PCB is provided with an opening. The transformer 100 and the second PCB are arranged corresponding to the opening, the transformer and the second PCB are fixedly and electrically connected, and the second PCB and the first PCB are detachably and electrically connected. An original large PCB is replaced by two small-area PCBs under the condition that the function is not changed, and in the transportation process, due to the fact that a force arm is reduced, the bending resistance of the edge, away from the transformer, of the PCB is higher, and deformation is not prone to occurring. Meanwhile, the overall size is reduced, and transportation is convenient.

Description

Technical Field

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

[0002] At present, with the development of new energy vehicles, the power of the power supply is required to be larger and larger, and at the same time, the size of the power supply is required to be small. Therefore, while improving the power density of the power supply, the installation space of the transformer is required to be small, the electrical connection is reliable, and the heat dissipation is reliable. The existing transformer is small in size and small in cross-sectional area, while the board area of ​​the PCB is large. The current installation technology scheme of the transformer usually adopts the method of welding the transformer to a large PCB board through a cable PIN. The disadvantage of this is that the transformer and the large PCB board cannot be installed separately on the housing, and the weight of the PCB board after welding the transformer is very heavy, which is inconvenient for production, transportation and production installation, and it is easy to cause the PCB board to deform. Utility Model Content

[0003] The technical purpose of the utility model is to provide a transformer assembly, which is intended to facilitate the separate installation of the transformer and the large PCB board, and the two can be transported separately, thereby better protecting the large PCB board.

[0004] In order to solve the above technical problems, the utility model is implemented as follows: the present application provides a transformer assembly, including:

[0005] transformer;

[0006] A first PCB board having an opening;

[0007] The second PCB board, the transformer and the second PCB board are fixedly connected and electrically connected, the two are arranged corresponding to the opening, and the second PCB board and the first PCB board are detachably connected and electrically connected.

[0008] In one embodiment, the transformer is divided into a first part and a second part, the first part is located on one side of the opening, and the second part is passed through the opening and located on the other side of the opening. The second part is fixedly connected and electrically connected to the second PCB board and the first PCB board. Along the length direction of the first PCB board, the length of the first part is greater than that of the second part.

[0009] In one embodiment, a third PCB board is further included. The third PCB board is located on a side of the second PCB board away from the first part. The third PCB board is fixedly and electrically connected to the second PCB board and the third PCB board is fixedly and electrically connected to the first PCB board.

[0010] In one embodiment, the first PCB board, the second PCB board, and the third PCB board are all fixedly connected by threaded connection.

[0011] In one embodiment, the electrical connections among the first PCB board, the second PCB board, and the third PCB board are all made through conductive metal connections.

[0012] In one embodiment, the conductive metal is a copper-containing alloy sheet.

[0013] In one embodiment, the copper-containing alloy sheet is bent in a step-like shape and is provided with a shrinkage seam, and two ends of the copper-containing alloy sheet are respectively electrically connected to corresponding PCB boards.

[0014] In one embodiment, the copper-containing alloy sheet is bent in a step-like shape and is provided with a shrinkage seam, and two ends of the copper-containing alloy sheet are respectively electrically connected to corresponding PCB boards.

[0015] In one embodiment, the area of ​​the opening, the area of ​​the second PCB board, and the area of ​​the third PCB board decrease in sequence.

[0016] In one of the embodiments, a glue injection hole and a positioning pin hole are provided in the second PCB board.

[0017] The present application also provides a power supply, including the transformer assembly in any one of the above embodiments, and also including a housing, the housing having a receiving space, and the transformer in the transformer assembly is installed in the receiving space.

[0018] Compared with the prior art, the transformer assembly in the utility model has the following beneficial effects: the utility model divides the PCB board into two pieces, one piece is the first PCB board, and the other piece is the second PCB board. No matter the area of ​​the first PCB board is equal to the original PCB board or the area of ​​the two PCB boards is equal to the original PCB board, the utility model can first connect the transformer to the PCB board with the smaller area of ​​the two PCB boards (assuming that the area of ​​the second PCB board is smaller), and then the small-volume transformer and the second PCB board can be installed and transported to the installation space of the shell. Since the area of ​​the second PCB board is smaller, the space occupied is smaller, the weight is also smaller, and it is not easy to deform. Then the first PCB board is installed, which facilitates production transportation and production installation. After the large first PCB board is installed in place, deformation of the first PCB board due to lack of support during transportation can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the first connection diagram between the transformer and the large PCB board.

[0020] Figure 2 It is a schematic diagram of the structure of the transformer assembly in the embodiment of the utility model;

[0021] Figure 3 yes Figure 2 A top view of an embodiment;

[0022] Figure 4It is a schematic diagram of the positional relationship between the transformer components and the housing;

[0023] Figure 5 This is the second connection method diagram between the transformer and the large PCB board.

[0024] Figure 6 yes Figure 2 Schematic diagram of the matching between the transformer and the PCB board in the embodiment.

[0025] In the drawings, the reference numerals represent: transformer 100 ; first part 110 ; second part 120 ; first PCB board 200 ; second PCB board 300 ; third PCB board 400 ; housing 500 ; copper-containing alloy sheet 10 ; shrinkage joint 11 ; glue injection hole 20 ; and positioning pin hole 30 . DETAILED DESCRIPTION

[0026] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying 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 one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] See also Figure 1 , Figure 1The existing installation scheme is shown. In the existing installation scheme of the power transformer 100, the cable PIN of the transformer 100 is usually directly welded to the PCB board, so that the PCB board and the transformer 100 cannot be separated, and need to be transported and installed as a whole. Since the PCB board is large in area and relatively thin, it is easy to deform or even bend during transportation and installation without perfect protection measures.

[0030] See also Figure 2 , Figure 2 The schematic diagram of the structure of the transformer assembly is shown. The present application provides a new transformer assembly, including a transformer 100 body and at least two PCB boards, the two PCB boards are named a first PCB board 200 and a second PCB board 300, wherein the first PCB board 200 has an opening. The transformer 100 and the second PCB board 300 are both arranged corresponding to the opening, the transformer 100 and the second PCB board 200 are fixedly connected and electrically connected, and the second PCB board 200 and the first PCB board 300 are detachably connected and electrically connected.

[0031] Please note that in the above embodiment, the detachable connection is not equal to the non-fixed connection. The detachable connection and the fixed connection are in a cross relationship. For example, the fixed connection includes threaded connection and welding, and the threaded connection is a detachable connection, while welding is a non-detachable connection. In this application, a detachable connection method is used for the convenience of installation. In other embodiments, a welding relationship, such as soldering, can also be adopted. In this embodiment, emphasis is placed on two installations, namely, the installation connection between the transformer 200 and the second PCB board 300 before being installed in the housing and the connection with the first PCB board 200 after being installed in the housing.

[0032] In this embodiment, the first PCB board 200 has an opening, and the size of the opening has no special relationship with the size of the cross-sectional area of ​​the transformer 100 in the plane direction of the first PCB board 200, and has no special relationship with the area of ​​the second PCB board 300. When the opening area is the largest, the second PCB board 300 and the transformer 100 that have been connected can be inserted into the opening when the second installation begins after transportation. When the opening area is the smallest, the second PCB board 300 and the transformer 100 can be on the same side of the opening. At this time, the opening is to save the production cost of the first PCB board 200, because the second PCB board 300 replaces the function of the PCB board where the opening is located. The technical solution provided by the present application preferably adopts the largest opening area, which can save vertical distance and improve space utilization.

[0033] In the above embodiment, a large PCB board that is originally required can be replaced with two PCB boards with smaller areas without changing the function. First, during transportation, the PCB board with a smaller area is installed on the transformer 100. Since the force arm is reduced, the edge of the PCB board far away from the transformer 100 has stronger bending resistance and is not easy to deform. Secondly, among the PCB boards, the PCB board with a smaller area is first installed and then transported together with the transformer 100, and the PCB board with a larger area is transported separately. Since the large PCB board has a regular shape and is not interfered by the transformer 100, it is very convenient to package and fix it during transportation, and it is not easy to be damaged. After it is in place, the large PCB board can be installed. Therefore, the present application can make transportation and installation more convenient and can effectively reduce the deformation of the PCB board.

[0034] See also Figure 2 Preferably, in one embodiment, the transformer 100 is divided into a first part 110 and a second part 120, the first part 110 is located on one side of the opening, the second part 120 is passed through the opening and is located on the other side of the opening, the second part 120 is fixedly connected and electrically connected to the second PCB board 300 and the first PCB board 200, and along the length direction of the first PCB board 200, the length of the first part 110 is greater than that of the second part 120.

[0035] In the above embodiment, the area of ​​the opening is obviously larger than the cross-sectional area of ​​the transformer 100 and also larger than the area of ​​the second PCB board 300, so that the second PCB board 300 can be inserted into the opening. However, in other embodiments, the area of ​​the opening can be smaller than the area of ​​the second PCB board 300, as long as the transformer 100 is inserted in the opposite direction. The length of the first part 110 is greater than the second part 120, which means that the first PCB board 200 is located at the edge of the transformer 100 instead of the middle area. This is because in the subsequent installation of the transformer 100, the transformer 100 needs to be almost completely placed in the accommodation space of the power supply housing 500, see Figure 4 If the first PCB board 200 is located in the middle area of ​​the transformer, the exposed area of ​​the transformer 100 will be too large.

[0036] See also Figure 2 and Figure 3 , Figure 3The top view of the assembly is shown. Preferably, in one embodiment, a third PCB board 400 is further included. The third PCB board 400 is located on the side of the second PCB board 300 away from the first part 110. The third PCB board 400 is fixedly connected and electrically connected to the second PCB board 300, and the third PCB board 400 is fixedly connected and electrically connected to the first PCB board 200. The third PCB board 400 can further utilize the axial space to reduce the size of the first PCB board 200, thereby reducing the size of the power supply volume, so that the shape of the power supply is changed from a rectangular parallelepiped with a large length-to-height ratio to a cube with a reduced length-to-height ratio.

[0037] In the above embodiment, the area of ​​the third PCB board 400 is smaller than that of the second PCB board 300, the transformer 100 is electrically connected to the third PCB board 400, and the third PCB board 400, the second PCB board 300, and the first PCB board 200 are fixedly connected and electrically connected in pairs.

[0038] Preferably, in one embodiment, the fixed connection between the first PCB board 200, the second PCB board 300, and the third PCB board 400 is threaded connection.

[0039] In the above embodiments, threaded holes can be drilled on any PCB board, and screws and nuts can be used for fixed connection. Threaded connection is a common connection method for fixed and detachable connection, which is low in cost. At the same time, the screws can be copper columns, which are connected to the conductive contacts on the PCB board, can play a conductive role, and facilitate subsequent wiring.

[0040] Preferably, in one embodiment, the electrical connections among the first PCB board 200 , the second PCB board 300 , and the third PCB board 400 are all made through conductive metal connections.

[0041] See also Figure 5 , Figure 5 The second connection method of the current electrical connection method is shown. Usually, the cable on the transformer 100 is connected to the terminal on the PCB. Since the primary current of the transformer 100 or the secondary current after boosting is large, the diameter of the cable needs to be thicker, so the cable needs a large bending radius and a large installation space, resulting in low space utilization.

[0042] See also Figure 6 In the present application, the second PCB board 300 is on one side of the transformer 100, so it can be directly connected without bending the cable, and the electrical connection with the first PCB board 200 can be completed through the second PCB board 300. Since the second PCB board 300 and the first PCB board 200 are arranged in the axial direction, the electrical connection can be achieved through the conductive metal sheet connection, and there is no need to use a cable with a large bending radius.

[0043] Preferably, in one of the embodiments, the conductive metal is a copper-containing alloy sheet 10. Copper has a low electrical resistance and is not easy to generate heat, so the loss is also low. Adding other metal elements can improve the various properties of the conductive metal. The copper-containing alloy sheet 10 used in the present application is a beryllium copper alloy sheet. The beryllium copper material has very high hardness, elastic limit, fatigue limit and wear resistance, and also has good corrosion resistance, thermal conductivity and electrical conductivity.

[0044] Preferably, participate Figure 6 In one embodiment, the copper-containing alloy sheet 10 is bent in a step-like shape and provided with a shrinkage gap 11, and both ends of the copper-containing alloy sheet 10 are electrically connected to the corresponding PCB boards. The step-like setting firstly compensates for the height difference between the PCB boards, and secondly, has the same function as the shrinkage gap 11, in order to make the copper-containing alloy sheet 10 more easily deformable, thereby more easily absorbing the assembly tolerance.

[0045] See also Figure 3 or Figure 6 In one embodiment, a glue injection hole 20 and a positioning pin hole 30 are provided in the second PCB board 300 .

[0046] It can be understood that the glue injection hole 20 is for facilitating the injection of heat dissipation glue into the interior to facilitate heat dissipation of the transformer 100, and the positioning pin hole 30 is for fixing the relative position of the first PCB board 200 and the third PCB board 400 to prevent position deviation during installation.

[0047] The present application also provides a power supply, including the transformer assembly in any one of the above embodiments, and also including a housing 500, the housing 500 having a receiving space, and the transformer 100 in the transformer assembly is installed in the receiving space.

[0048] See also Figures 3 to 6 The transformer 100 needs to be installed in the accommodation space of the housing 500. At this time, the first PCB board 200, the second PCB board 300 and the third PCB board 400 are all outside the accommodation space. Therefore, the reduction in the area of ​​the first PCB board 200 is of great significance in transportation and installation.

[0049] The optimal solution provided in the present application is that the transformer 100 is electrically connected to the second PCB board 300, and the third PCB board 400 is electrically connected to the third PCB board 400 at the same time, and then the second PCB board 300 and the third PCB board 400 are fixedly connected using screws and nuts. After the transformer 100 is placed in the accommodation space of the housing 500, the heat dissipation holes on the second PCB board 300 will be aligned with the heat dissipation grooves of the housing 500, and glue is poured into the heat dissipation grooves through the heat dissipation holes for later heat dissipation. Then, the first PCB board 200 and the copper-containing alloy sheet 10 are assembled, thereby realizing the electrical connection and fixed connection of the three PCB boards.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A transformer assembly, characterized in that: include: Transformer (100); A first PCB board (200) having an opening; A second PCB board (300), the transformer (100) and the second PCB board (300) are fixedly connected and electrically connected, the two are arranged corresponding to the opening, and the second PCB board (300) and the first PCB board (200) are detachably connected and electrically connected.

2. The transformer assembly according to claim 1, characterized in that: The transformer (100) is divided into a first part (110) and a second part (120), wherein the first part (110) is located on one side of the opening, and the second part (120) is arranged through the opening and located on the other side of the opening, and the second part (120) is fixedly connected and electrically connected to both the second PCB board (300) and the first PCB board (200), and along the length direction of the first PCB board (200), the length of the first part (110) is greater than that of the second part (120).

3. The transformer assembly according to claim 2, characterized in that: The invention also comprises a third PCB board (400), the third PCB board (400) being located on a side of the second PCB board (300) away from the first part (110), the third PCB board (400) being fixedly connected and electrically connected to the second PCB board (300), and the third PCB board (400) being fixedly connected and electrically connected to the first PCB board (200).

4. The transformer assembly according to claim 3, characterized in that: The first PCB board (200), the second PCB board (300) and the third PCB board (400) are all fixedly connected by threaded connection.

5. The transformer assembly according to claim 3, characterized in that: The electrical connections between the first PCB board (200), the second PCB board (300) and the third PCB board (400) are all made through conductive metal connections.

6. The transformer assembly according to claim 5, characterized in that: The conductive metal is a copper-containing alloy sheet (10).

7. The transformer assembly according to claim 6, characterized in that The copper-containing alloy sheet (10) is bent in a step-like shape and is provided with a contraction seam (11); two ends of the copper-containing alloy sheet (10) are respectively electrically connected to corresponding PCB boards.

8. The transformer assembly according to claim 3, characterized in that: The area of ​​the opening, the area of ​​the second PCB board (300), and the area of ​​the third PCB board (400) decrease in sequence.

9. The transformer assembly according to claim 1, characterized in that: The second PCB board (300) is provided with a glue injection hole (20) and a positioning pin hole (30).

10. A power supply, characterized in that: The transformer assembly comprises the transformer assembly as claimed in any one of claims 1 to 9, and further comprises a housing (500), wherein the housing (500) has a receiving space, and the transformer (100) in the transformer assembly is installed in the receiving space.

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