Surface-mounted rectifier bridge

Abstract

The utility model relates to the technical field of rectifier bridges, and discloses a surface-mounted rectifier bridge, which comprises a plastic package body, a P-type diode chip, an N-type diode chip and two groups of heat-conducting fins are arranged in the plastic package body, one ends of the heat-conducting fins, which are far away from each other, extend to the outside of the plastic package body, and the other ends of the heat-conducting fins extend to the outside of the plastic package body. The two sides of the plastic package body are connected with the supporting units and the electrode supporting feet, the electrode supporting feet and the supporting units are connected in a crossed mode, the top end of the plastic package body is provided with an operation hole, the bottom end of the plastic package body is connected with the positioning base, the bottom end of the positioning base is connected with the rubber base, and the bottom end of the plastic package body is connected with the heat dissipation support. According to the utility model, the electrode support feet can be effectively protected through the support units, the breaking phenomenon is avoided, the plastic package body is supported, the use stability is ensured, the heat dissipation space is increased below the plastic package body, and the use effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rectifier bridges, in particular to a patch type rectifier bridge. Background Art

[0002] The rectifier bridge generally carries a sufficiently large inductive load, so there is no current discontinuity in the rectifier bridge. When the rectifier bridge is generally used, a smoothing inductor is often connected to its load end, so its load can be regarded as a constant current source. Multiple groups of three-phase rectifier bridges are connected to each other so that the harmonics generated by the rectifier bridge circuit cancel each other out.

[0003] The current rectifier bridge needs to spot weld the legs of the rectifier bridge on the circuit board when in use. Since the legs are small, welding is troublesome. At the same time, the legs are mostly thin metal sheets, which are easily broken when adjusting the angle, resulting in the scrapping of the rectifier bridge. At the same time, most rectifier bridges are directly attached to the circuit board, and their heat dissipation effect is poor, which affects their service life. Therefore, a surface-mount rectifier bridge is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a patch type rectifier bridge to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: including a plastic package body, wherein a P-type diode chip, an N-type diode chip and a heat conducting sheet are arranged in the plastic package body, the heat conducting sheet has two groups, and one end away from each other extends to the outside of the plastic package body, both sides of the plastic package body are connected with a support unit and an electrode support foot, the electrode support foot is cross-connected with the support unit, an operating hole is opened at the top of the plastic package body, a positioning seat is connected to the bottom of the plastic package body, a rubber seat is connected to the bottom of the positioning seat, and a heat dissipation bracket is connected to the bottom of the plastic package body.

[0006] Preferably, the heat conducting sheets are provided with slots on the sides close to each other, and the P-type diode chip and the N-type diode chip are located in the corresponding slots.

[0007] Preferably, the electrode support leg comprises a support leg sheet, a bottom end of the support leg sheet is connected to a forked support leg, and the forked support legs are both connected to welding angles on the sides close to each other.

[0008] Preferably, there are multiple electrode legs, which are respectively a positive output terminal, a negative output terminal and two sets of AC input terminals, which are respectively connected to corresponding support units.

[0009] Preferably, the support unit comprises a support frame, a support plate is connected to one side of the support frame, a wire entry hole is opened on one side of the support frame, a protective frame is connected to one side of the bottom end of the support frame, and a spot welding hole is opened on the top of the protective frame.

[0010] Preferably, the spot welding hole is located above the welding corner, and the operation hole is located directly above the spot welding hole.

[0011] Preferably, a glue layer is provided at the bottom end of the glue seat.

[0012] Preferably, a slope is provided on the top of the plastic sealing body.

[0013] Preferably, the electrode legs are electrically connected to the corresponding N-type diode chip and the heat conducting sheet.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model can effectively protect the electrode legs through the support unit to avoid breakage, and at the same time support the plastic package body to ensure the stability of use, and also increase the heat dissipation space under the plastic package body to improve the use effect;

[0016] 2. The utility model also has a heat conducting sheet which can directly transfer the heat of the P-type diode chip and the N-type diode chip inside the plastic package. The heat dissipation bracket located below also increases the heat dissipation effect of the plastic package, ensuring the use effect and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a patch-type rectifier bridge of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a patch-type rectifier bridge viewed from above in the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of a patch-type rectifier bridge of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of a heat conducting sheet in a patch-type rectifier bridge of the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the connection structure of the support unit and the electrode support legs in a patch type rectifier bridge.

[0022] In the figure: 1. plastic package; 2. P-type diode chip; 3. N-type diode chip; 4. heat conductive sheet; 5. support unit; 51. support frame; 52. support plate; 53. wire entry hole; 54. protective frame; 55. spot welding hole; 6. electrode support foot; 61. support foot piece; 62. forked support foot; 63. welding angle; 7. operation hole; 9. positioning seat; 110. glue seat; 111. glue layer; 12. heat dissipation bracket; 13. inclined surface. DETAILED DESCRIPTION

[0023] 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 in 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.

[0024] See also Figure 1-5 The utility model provides a technical solution: including a plastic package 1, wherein a P-type diode chip 2, an N-type diode chip 3 and a heat conducting sheet 4 are arranged in the plastic package 1, and the heat conducting sheet 4 has two groups, and the P-type diode chip 2 and the N-type diode chip 3 are respectively stuck in the corresponding heat conducting sheets 4. When heat is generated during use, the heat conducting sheet 4 can absorb the heat of the P-type diode chip 2 and the N-type diode chip 3 well, and the ends away from each other are extended to the outside of the plastic package 1, so as to facilitate the heat transfer and heat dissipation. The plastic package 1 is connected with The support unit 5 and the electrode support foot 6 are cross-connected with the support unit 5. The support unit 5 can protect the electrode support foot 6 from the outside and provide a support effect for the plastic package 1. The top of the plastic package 1 is provided with an operation hole 7. The staff can perform welding work on the electrode support foot 6 and the circuit board through the operation hole 7. The bottom end of the plastic package 1 is connected with a positioning seat 9, and the bottom end of the positioning seat 9 is connected with a rubber seat 110. The bottom end of the plastic package 1 is connected with a heat dissipation bracket 12, which can dissipate heat from the bottom of the plastic package 1 to increase the heat dissipation effect of the plastic package 1;

[0025] The heat conducting sheet 4 is provided with a card slot on the side close to each other, and the P-type diode chip 2 and the N-type diode chip 3 are located in the corresponding card slots, which can absorb the heat generated by the P-type diode chip 2 and the N-type diode chip 3 well and transfer it through its own thermal conductivity. The heat conducting sheet 4 can be made of alumina ceramic material, which has the effect of insulation and thermal conductivity.

[0026] The electrode support leg 6 includes a support leg sheet 61, the bottom end of the support leg sheet 61 is connected to a bifurcated support leg 62, and the bifurcated support legs 62 are connected to a welding angle 63 on the sides close to each other. Figure 5 One end of the support leg 61 extends into the plastic package 1 and is electrically connected to the corresponding P-type diode chip 2 and N-type diode chip 3 .

[0027] There are multiple electrode legs 6, which are respectively a positive output terminal, a negative output terminal and two sets of AC input terminals, and are respectively connected to corresponding support units 5.

[0028] The support unit 5 includes a support frame 51, and one side of the top of the support frame 51 is fixedly connected to the plastic sealing body 1. A support plate 52 is connected to one side of the support frame 51. One side of the support plate 52 extends to the bottom of the plastic sealing body 1 to drag the bottom end of the plastic sealing body 1. An inlet hole 53 is opened on one side of the support frame 51. A protective frame 54 is connected to one side of the bottom end of the support frame 51. The bottom end 62 extends into the protective frame 54. A spot welding hole 55 is opened on the top of the protective frame 54. The spot welding hole 55 is located above the welding corner 63. The operation hole 7 is located directly above the spot welding hole 55, ensuring that the space above is open to facilitate the installation work.

[0029] The bottom of the adhesive seat 110 is provided with an adhesive layer 111, and during pre-installation, the device can be glued to the circuit board through 111 to adjust the position and avoid displacement during welding.

[0030] The top of the plastic package body 1 is provided with an inclined surface 13 to increase the heat dissipation area of ​​the plastic package body 1 and improve the use effect.

[0031] Working principle: When the utility model is in use, the plastic package body 1 is adhered to the pre-installed position on the circuit board by using the adhesive layer 111, and the tin bar is inserted through the wire entry hole 53 to just above the spot welding hole 55, and the welding angle 63 is welded to the circuit board by operating the position of the welding gun under the hole 7. After welding, the support frame 51 and the protective frame 54 play the role of supporting the plastic package body 1, and at the same time can protect the electrode support leg 6 as a whole. When in use, the heat conductive sheet 4 can absorb the heat of the P-type diode chip 2 and the N-type diode chip 3 and transfer it to improve the heat dissipation effect. At the same time, the heat dissipation bracket 12 located below can also help the plastic package body 1 to dissipate heat as a whole to avoid damage to the device caused by high temperature. There are two groups of forked legs 62 and spot welding holes 55, which can be used to weld circuit boards while also welding wires to connect other electronic components and equipment to improve the use effect.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface-mount rectifier bridge, comprising a plastic package (1), characterized in that: The plastic package (1) is provided with a P-type diode chip (2), an N-type diode chip (3) and a heat conducting sheet (4); the heat conducting sheet (4) has two groups, and the ends away from each other extend to the outside of the plastic package (1); both sides of the plastic package (1) are connected with a support unit (5) and an electrode support foot (6); the electrode support foot (6) and the support unit (5) are cross-connected; an operating hole (7) is provided at the top of the plastic package (1); a positioning seat (9) is connected to the bottom of the plastic package (1); a rubber seat (110) is connected to the bottom of the positioning seat (9); and a heat dissipation bracket (12) is connected to the bottom of the plastic package (1).

2. A SMD bridge rectifier according to claim 1, characterized in that: The heat conducting sheets (4) are each provided with a slot on one side close to each other, and the P-type diode chip (2) and the N-type diode chip (3) are located in the corresponding slots.

3. A SMD bridge rectifier according to claim 1, characterized in that: The electrode support leg (6) comprises a support leg sheet (61), the bottom end of the support leg sheet (61) is connected to a forked support leg (62), and the mutually adjacent sides of the forked support legs (62) are both connected to a welding angle (63).

4. A SMD bridge rectifier according to claim 3, characterized in that: There are a plurality of electrode legs (6), which are respectively a positive electrode output terminal, a negative electrode output terminal and two sets of AC input terminals, and are respectively connected to corresponding support units (5).

5. A SMD bridge rectifier according to claim 4, characterized in that: The support unit (5) comprises a support frame (51), a support plate (52) is connected to one side of the support frame (51), a wire entry hole (53) is provided on one side of the support frame (51), a protective frame (54) is connected to one side of the bottom end of the support frame (51), and a spot welding hole (55) is provided on the top end of the protective frame (54).

6. A SMD bridge rectifier according to claim 5, characterized in that: The spot welding hole (55) is located above the welding corner (63), and the operation hole (7) is located directly above the spot welding hole (55).

7. A SMD bridge rectifier according to claim 1, characterized in that: The bottom end of the glue seat (110) is provided with a glue layer (111).

8. The SMD bridge rectifier according to claim 1, characterized in that: The top end of the plastic sealing body (1) is provided with an inclined surface (13).

9. The SMD bridge rectifier according to claim 1, characterized in that: The electrode legs (6) are electrically connected to the corresponding P-type diode chip (2) and N-type diode chip (3).

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