Bridge rectifier
By using the DBC substrate and welding pin structure in the bridge rectifier, combined with the cover plate and heat sink, the problem of disassembly difficulty after short circuit is solved, and the rapid disassembly and efficient heat dissipation of the bridge rectifier is achieved.
Patent Information
- Application Number
- CN202421029018.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing bridge rectifiers are difficult to disassemble due to the melting of multiple strands of fine copper wires after a short circuit.
A bridge rectifier is designed, using a DBC substrate and a welded pin structure, combined with a cover plate and a heat sink to achieve rapid disassembly and assembly and effective heat dissipation.
Through the plug-in connection function and heat dissipation design, the problem of difficulty in disassembly after short circuit is solved, and the rapid disassembly and efficient heat dissipation of the bridge rectifier is achieved.
Smart Images
Figure CN222262473U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rectifiers, in particular to a bridge rectifier. Background Art
[0002] A bridge rectifier is a device mainly used to convert alternating current into direct current for use in power supplies. It is often installed in the middle of the electrical appliance and the power connection line to convert the alternating current conducted by the power connection line into direct current that can be used by the electrical appliance. It is a common device in our lives.
[0003] The existing bridge rectifier has the following main deficiencies in use. For example, the existing bridge rectifier is connected by bundling the core of the connecting wire on the terminal of the bridge rectifier. The core of the connecting wire is composed of multiple strands of fine copper wire. It is easy to generate high temperature after the connecting wire is short-circuited, so that the multiple strands of fine copper wires bundled on the connecting wire will melt together, resulting in the hardening of the connecting wire and it is not easy to disassemble. Summary of the invention
[0004] The utility model aims to provide a bridge rectifier to solve the problem that the existing bridge rectifier mentioned in the background technology is to connect the core of the connecting wire by bundling it on the terminal of the bridge rectifier, and the core of the connecting wire is composed of multiple strands of fine copper wire. It is easy to generate high temperature after the connecting wire is short-circuited, so that the multiple strands of fine copper wires bundled on the connecting wire will melt together, so that the connecting wire will harden and it is not easy to disassemble.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bridge rectifier, comprising a rectifier body and a DBC substrate, a connection position is provided on the top of the rectifier body, a mounting cavity is provided on the bottom surface of the connection position, a DBC substrate is arranged in the mounting cavity, a plurality of connector pins are welded on the top of the DBC substrate, a cover plate is provided between the connection position and the mounting cavity, a socket is provided on the surface of the cover plate at a position relative to the connector pins, and the connector pins are movably connected in the socket.
[0006] Preferably, a stepped structure is designed between the connection position and the installation cavity, and a cover plate is fixedly installed on the protruding portion between the connection position and the installation cavity.
[0007] Preferably, a threaded hole is provided on the bottom surface of the installation cavity, a connecting hole is provided on the surface of the DBC substrate at a position opposite to the threaded hole, and the connecting hole and the threaded hole are connected by a fixing screw.
[0008] Preferably, the connector pin comprises a welding block and a plug-in block, and the welding block is fixedly connected to the bottom of the plug-in block.
[0009] Preferably, a welding position is provided on the surface of the welding block.
[0010] Preferably, bayonet holes are provided on both sides of the outer wall of the connector block, and a circular hole is provided at the center of the surface of the connector block.
[0011] Preferably, the connection position located on the top of the cover plate is filled with glue.
[0012] Preferably, a plurality of heat sinks are fixedly connected to the outer wall of the rectifier body, and a plurality of heat sinks are provided on the surface of the heat sink.
[0013] Beneficial Effects
[0014] Compared with the existing technology, the beneficial effects of the utility model are:
[0015] Through the structural design of the utility model, by setting a DBC substrate and welding connector pins on the DBC substrate, the bridge rectifier has the function of plug connection, thereby effectively solving the problems raised by the background technology, replacing the traditional structure, and facilitating the rapid disassembly and assembly of the bridge rectifier. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the DBC substrate structure of the utility model;
[0018] Figure 3 This is a schematic diagram of the plug pin structure of the utility model;
[0019] Figure 4 This is a schematic diagram of the cover structure of the utility model;
[0020] Figure 5 This is a schematic diagram of the main structure of the rectifier of the utility model.
[0021] 1. Rectifier body; 2. Connection position; 3. Connector pins; 4. Glue; 5. DBC substrate; 6. Connection holes;
[0022] 7. Cover plate; 8. Mounting cavity; 9. Heat sink; 31. Connector block; 32. Welding block; 33. Bayonet;
[0023] 34. Round hole; 35. Welding position; 71. Connector; 81. Threaded hole; 91. Heat sink. DETAILED DESCRIPTION
[0024] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are 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.
[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore are not to be construed as limiting the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and are not to be construed as indicating or implying relative importance.
[0026] like Figure 1-5 It is a schematic diagram of the structure of a bridge rectifier of a preferred embodiment of the utility model. In this embodiment, a bridge rectifier includes a rectifier body 1 and a DBC substrate 5. A connection position 2 is opened on the top of the rectifier body 1. A mounting cavity 8 is opened on the bottom surface of the connection position 2. The DBC substrate 5 is arranged in the mounting cavity 8. The DBC substrate 5 has the ability to provide efficient thermal management and high electrical performance, making it an application that is crucial for heat dissipation and reliable electrical connection. A plurality of connector pins 3 are soldered on the top surface of the DBC substrate 5 by soldering. The number of the connector pins 3 can be three, four or five. A cover plate 7 is provided between the connection position 2 and the mounting cavity 8. The cover plate 7 is provided to protect the DBC substrate 5. A socket port 71 is provided on the surface of the cover plate 7 at a position relative to the connector pin 3, and the connector pin 3 is movably connected in the socket port 71 to facilitate the connector pin 3 to be connected to the connector. Combined with the design of the above structure, the bridge rectifier has the function of plug connection, thereby effectively solving the problems raised by the background technology, replacing the traditional structure, and facilitating the bridge rectifier to have the effect of quick disassembly and assembly.
[0027] In this embodiment, a stepped structure is designed between the connection position 2 and the installation cavity 8, and a cover plate 7 is fixedly installed on the protruding portion between the connection position 2 and the installation cavity 8, which facilitates the installation and placement of the cover plate 7 and plays a role in limiting the cover plate 7.
[0028] In this embodiment, a threaded hole 81 is opened on the bottom surface of the mounting cavity 8, and a connecting hole 6 is opened on the surface of the DBC substrate 5 at a position opposite to the threaded hole 81, and the connecting hole 6 is connected to the threaded hole 81 by a fixing screw, so that the DBC substrate 5 is fixedly installed in the mounting cavity 8, effectively preventing the DBC substrate 5 from shaking during use.
[0029] In this embodiment, the connector pin 3 includes a welding block 32 and a plug-in block 31. The welding block 32 is fixedly connected to the bottom of the plug-in block 31. A welding position 35 is opened on the surface of the welding block 32 to facilitate soldering between the DBC substrate and the connector pin 3, which serves as a guide for soldering.
[0030] In this embodiment, bayonet holes 33 are provided on both sides of the outer wall of the connector block 31. Through the design of the bayonet holes 33, this structural design plays a role of limiting after the connector pin 3 is inserted into the connector, thereby preventing the occurrence of over-connection during the plug-in connection. A round hole 34 is provided at the center of the surface of the connector block 31. This structural design plays a role of positioning after the connector pin 3 is inserted into the connector.
[0031] In this embodiment, glue 4 is filled on the top of the cover plate 7 in the connection position 2 , and the glue 5 is room temperature glue, which plays a role in sealing the rectifier body 1 and the DBC substrate 5 .
[0032] In this embodiment, a plurality of heat sinks 9 are fixedly connected to the outer wall of the rectifier body 1 to dissipate heat for the rectifier body 1 during operation, and in order to increase the heat dissipation efficiency, a plurality of heat dissipation grooves 91 are provided on the surface of the heat sink 9 to facilitate the rapid dissipation of heat.
[0033] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.
Claims
1. A bridge rectifier, comprising a rectifier body (1) and a DBC substrate (5), characterized in that: The rectifier body (1) is provided with a connection position (2) on the top, a mounting cavity (8) is provided on the bottom surface of the connection position (2), a DBC substrate (5) is arranged in the mounting cavity (8), a plurality of connection pins (3) are welded on the top of the DBC substrate (5), a cover plate (7) is arranged between the connection position (2) and the mounting cavity (8), a connection port (71) is provided on the surface of the cover plate (7) at a position relative to the connection pins (3), and the connection pins (3) are movably connected in the connection port (71).
2. A bridge rectifier according to claim 1, characterized in that: The connection position (2) and the installation cavity (8) are designed in a stepped structure, and a cover plate (7) is fixedly installed on the protruding portion between the connection position (2) and the installation cavity (8).
3. A bridge rectifier according to claim 1, characterized in that: A threaded hole (81) is provided on the bottom surface of the installation cavity (8), a connection hole (6) is provided on the surface of the DBC substrate (5) at a position opposite to the threaded hole (81), and the connection hole (6) and the threaded hole (81) are connected via a fixing screw.
4. A bridge rectifier according to claim 2, characterized in that: The connector pin (3) comprises a welding block (32) and a plug-in block (31), and the bottom of the plug-in block (31) is fixedly connected with the welding block (32).
5. A bridge rectifier according to claim 4, characterized in that: A welding position (35) is provided on the surface of the welding block (32).
6. A bridge rectifier according to claim 4, characterized in that: The outer wall of the connector block (31) is provided with bayonet holes (33) on both sides, and the center of the surface of the connector block (31) is provided with a circular hole (34).
7. A bridge rectifier according to claim 2, characterized in that: The connection position (2) is located on the top of the cover plate (7) and is filled with glue (4).
8. The bridge rectifier according to claim 1, characterized in that: A plurality of heat sinks (9) are fixedly connected to the outer wall of the rectifier body (1), and a plurality of heat sinks (91) are provided on the surface of the heat sink (9).