MOS tube rectification module

Abstract

The utility model discloses an MOS tube rectification module which comprises a heat dissipation aluminum plate, a plurality of installation grooves are arranged on the heat dissipation aluminum plate side by side, copper bars are embedded in the installation grooves, two groups of rectification modules are arranged on the heat dissipation aluminum plate side by side, and each rectification module comprises two rows of MOS tube groups arranged side by side and a connection terminal group arranged between the two rows of MOS tube groups. Each MOS tube group comprises a plurality of MOS tubes which are connected in parallel, and the connecting terminal group comprises a plurality of connecting terminal seats which are connected in parallel; a drain electrode of each MOS tube is fixedly connected with the copper bar, a source electrode of each MOS tube is fixedly connected with the connecting terminal seat, a grid electrode of each MOS tube is fixedly connected with the circuit board layer arranged on the heat dissipation aluminum plate, and two control board sockets arranged side by side are respectively arranged at two ends of the heat dissipation aluminum plate; according to the utility model, the production cost is low, the current capacity can be improved, the reliability can be improved, the current distribution can be improved, and the power processing capability can be enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectifier device technical field especially relates to a MOS tube rectifier module. BACKGROUND

[0002] MOS tube rectifier module is a kind of electronic equipment for converting alternating current into direct current. It is usually composed of multiple MOS tubes, and these MOS tubes act as switches in the circuit to achieve rectification function. MOS tube, full name is metal oxide semiconductor field effect transistor, is a kind of semiconductor device mainly used for amplifying or switching electronic signals.

[0003] Transformer is a kind of electrical equipment for changing voltage, and it converts alternating current of one voltage level into alternating current of another voltage level by electromagnetic induction principle. It is usually composed of two or more windings, respectively called primary winding and secondary winding.

[0004] The role of MOS tube in full-wave rectification is mainly as a switching device to control the direction of current. Full-wave rectification is a technology that converts alternating current into direct current, and it converts both positive and negative half cycles of alternating current into positive direct current by using multiple diodes or other rectifying elements. In this process, MOS tube can control the flow of current by controlling the gate voltage, thereby achieving control over the direction of current. Due to the characteristics of high input impedance and low noise, MOS tube is widely used in full-wave rectification circuit. Full-wave rectification is the process of converting both positive and negative half cycles of alternating current into direct current. In this case, MOS tube rectifier module is usually connected to the secondary winding of transformer in the form of bridge circuit.

[0005] The utility model with design reasonable, simple and quick processing, can improve production efficiency and heat dissipation performance is disclosed in the utility model with design reasonable, simple and quick processing, can improve production efficiency and heat dissipation performance. However, there are still the following deficiencies: the metal heat sink is a whole copper substrate, which has high cost; it cannot meet the needs of handling large current, and the current handling capacity is limited; all the heat is concentrated in a small area, and the heat dissipation problem is prominent; the reliability, efficiency and flexibility are relatively poor. UTILITY MODEL CONTENTS

[0006] In order to at least overcome one of the technical problems existing in the prior art, the utility model provides a MOS tube rectifier module, which has low production cost, can improve current capacity, improve reliability, improve current distribution and enhance power handling capacity.

[0007] The utility model provides a MOS tube rectification module, including the aluminium plate of heat dissipation, a plurality of installation grooves are set up side by side on the aluminium plate of heat dissipation, and the copper bar is embedded in each installation groove, and two groups of rectification modules are also installed side by side on the aluminium plate of heat dissipation, and each rectification module includes two rows MOS tube groups installed side by side, a connecting terminal group is installed between the two rows MOS tube groups, each MOS tube group includes a plurality of parallel MOS tubes, and the connecting terminal group includes a plurality of parallel connecting terminal seats, the drain electrode of each MOS tube is connected and fixed with the copper bar, the source electrode of each MOS tube is connected and fixed with the connecting terminal seat, and the gate of each MOS tube is connected and fixed with the circuit board layer set on the aluminium plate of heat dissipation, and two control board sockets are installed side by side at both ends of the aluminium plate of heat dissipation.

[0008] In some embodiments, the plurality of installation grooves is three, and the width of the installation groove in the middle is greater than the width of the other two installation grooves.

[0009] In some embodiments, the connecting terminal seat includes a U-shaped seat, a connecting through hole is formed in the top of the U-shaped seat, and two connecting pins are arranged on both sides of the lower end of the U-shaped seat.

[0010] In some embodiments, each control board socket includes a socket, a seat hole is formed in the socket, and two plug pins are installed side by side in the seat hole.

[0011] In some embodiments, a plurality of regularly distributed fixing holes are further included, and each fixing hole penetrates the copper bar and the aluminium plate of heat dissipation in sequence.

[0012] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0013] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, wherein:

[0014] Figure 1 is the plane structure schematic diagram of the utility model;

[0015] Figure 2 is the schematic diagram along Figure 1 A-A in the middle is divided;

[0016] Figure 3 is the plane structure schematic diagram of the aluminium plate of heat dissipation;

[0017] Figure 4 is the structure schematic diagram of the connecting terminal seat;

[0018] Figure 5 is the structure schematic diagram of the control board socket.

[0019] Reference signs:

[0020] Heat dissipation aluminum plate 1, mounting groove 2, copper bar 3, rectifier module 4;

[0021] MOS tube group 40, MOS tube 400, connection terminal group 41;

[0022] Connection terminal seat 410, U-shaped seat 4100, connection through hole 4101, connection foot 4102;

[0023] Control panel socket 5, socket 500, seat hole 501, pin 502;

[0024] Fixing hole 6. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0026] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0027] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0028] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] ReferFigures 1-5 The application discloses a MOS tube rectifier module, which comprises a heat dissipation aluminum plate 1, a plurality of rectangular mounting grooves 2 are arranged side by side on the heat dissipation aluminum plate 1, rectangular copper bars 3 are embedded in the mounting grooves 2, the copper bars 3 are in the same horizontal plane as the heat dissipation aluminum plate 1 or are lower than the height of the heat dissipation aluminum plate 1, two groups of rectifier modules 4 are further arranged side by side on the heat dissipation aluminum plate 1, each rectifier module 4 comprises two groups of MOS tubes 40 arranged side by side, and a connecting terminal group 41 arranged between the two groups of MOS tubes 40; each group of MOS tubes 40 comprises a plurality of parallel MOS tubes 400, the connecting terminal group 41 comprises a plurality of parallel connecting terminal bases 410; the drain of each MOS tube 400 is connected and fixed with the copper bar 3, the source of each MOS tube 400 is connected and fixed with the connecting terminal base 410, and the gate of each MOS tube 400 is connected and fixed with a circuit board layer arranged on the heat dissipation aluminum plate 1; two control board sockets 5 are arranged side by side at two ends of the heat dissipation aluminum plate 1, and the two control board sockets 5 at any one end can be connected, so that connection is more convenient.

[0030] The application adopts the structure that the copper bars 3 are embedded in the mounting grooves 2 of the heat dissipation aluminum plate 1, so that the cost and the total weight can be reduced; the two groups of rectifier modules 4 are arranged, and the application has the following advantages compared with the prior art: 1. improving current capacity: by parallel connection of the two groups of rectifier modules 4, the total current capacity of the rectifier circuit can be increased. This is because the parallel MOS tubes 400 can share the load current, thereby allowing a larger total current to pass. This is particularly important in applications that require handling large currents, as it can avoid damage to a single MOS tube 400 due to overloading. 2. reducing thermal stress: parallel use of MOS tubes 400 can disperse heat and reduce the thermal stress of each MOS tube 400. Since power loss generates heat, multiple MOS tubes 400 sharing the load can prevent any one MOS tube 400 from overheating, thereby improving the reliability and life of the system. 3. improving reliability: the use of two groups of rectifier modules 4 can improve the redundancy of the system. Even if one of the MOS tubes 400 fails, the other MOS tubes 400 can still work, thereby improving the overall reliability of the system. 4. improving current distribution: in some cases, parallel use of MOS tubes 400 can help improve current distribution and reduce the phenomenon of current concentration on one device. This is very important for maintaining the stability and performance of the circuit. 5. enhancing power handling capability: parallel use of MOS tubes 400 can enhance the power handling capability of the rectifier module 4. Since each MOS tube 400 can handle a certain amount of power, multiple MOS tubes 400 in parallel can handle a larger total power.

[0031] In some embodiments, the plurality of installation slots 2 is three, the width of the installation slot 2 in the middle is greater than the width of the other two installation slots 2, and the three copper bars 3 are correspondingly fixed in the three installation slots 2, and the copper bar 3 in the middle is wider and can be used for the adjacent MOS tube group 40 in the two groups of rectifier modules 4.

[0032] In some embodiments, the connecting terminal seat 410 includes a U-shaped seat 4100, a connecting through hole 4101 opened at the top of the U-shaped seat 4100, which is convenient for screwing and connecting and fixing, and is convenient for disassembly; a gap is formed between the U-shaped seat 4100 and the heat dissipation aluminum plate 1; two connecting feet 4102 are arranged at the lower end of the U-shaped seat 4100 on both sides, and each connecting foot 4102 can be welded on the circuit board layer.

[0033] In some embodiments, each control board socket 5 includes a socket 500, a seat hole 501 opened in the socket 500, and two pin needles 502 installed side by side in the seat hole 501, one of which can be a gate pin needle, and the other can be an emitter pin needle; in the control circuit, the on and off states of the MOS tube 400 can be controlled by controlling the voltage of the gate, so as to realize the control of the current. The emitter is usually used as a reference point or reference point of current.

[0034] In some embodiments, a plurality of regularly distributed fixing holes 6 are further included, each fixing hole penetrates the copper bar 3 and the heat dissipation aluminum plate 1 in sequence, and after a connecting member such as a screw is screwed into the fixing hole, the copper bar 3 and the heat dissipation aluminum plate 1 can be conveniently fixed.

[0035] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application. Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A MOSFET rectifier module comprising a heat sink aluminum plate, characterized in that: A plurality of installation grooves are arranged side by side on a heat dissipation aluminum plate, and a copper strip is embedded in each installation groove. Two groups of rectifier modules are also arranged side by side on the heat dissipation aluminum plate. Each rectifier module comprises two groups of MOS tubes arranged side by side, and a connecting terminal group arranged between the two groups of MOS tubes. Each group of MOS tubes comprises a plurality of MOS tubes connected in parallel. The connecting terminal group comprises a plurality of connecting terminal seats connected in parallel. The drain electrode of each MOS tube is connected and fixed to the copper strip. The source electrode of each MOS tube is connected and fixed to the connecting terminal seat. The gate electrode of each MOS tube is connected and fixed to a circuit board layer arranged on the heat dissipation aluminum plate. Two control board sockets are arranged side by side at each end of the heat dissipation aluminum plate.

2. The MOSFET rectifier module of claim 1, wherein: The plurality of installation grooves are three, and the width of the installation groove located in the middle is greater than the width of the other two installation grooves.

3. The MOS transistor rectifier module as described in claim 2, characterized in that: The connecting terminal seat comprises a U-shaped seat and a connecting through hole arranged on the top of the U-shaped seat. Two connecting legs are arranged on the lower end of the U-shaped seat.

4. The MOSFET rectifier module of claim 3, wherein: Each control board socket comprises a socket, a seat hole arranged in the socket, and two plug pins arranged side by side in the seat hole.

5. The MOSFET rectifier module of any one of claims 1-4, wherein: the MOSFET rectifier module is configured to be mounted on a printed circuit board (PCB) in a surface mount configuration. A plurality of regularly distributed fixing holes are also arranged. Each fixing hole penetrates the copper strip and the heat dissipation aluminum plate.

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