Rectifying device

Abstract

The invention provides a rectifying device which comprises a first heat dissipation block, a second heat dissipation block and more than one transformer assembly, the first heat dissipation block and the second heat dissipation block are arranged in parallel at intervals, and the transformer assemblies are located between the first heat dissipation block and the second heat dissipation block and are arranged at intervals in the parallel extension direction of the first heat dissipation block and the second heat dissipation block. Wherein the upper side and the lower side of one heat dissipation block are provided with synchronous rectification modules corresponding to the transformer assembly, the heat dissipation block, the synchronous rectification modules and the corresponding transformer assembly form a current circuit, and the transformer assembly and the other heat dissipation block form another current circuit. According to the invention, the required total current can be shared through more than one transformer assembly, shunting is realized, the heating value of a single transformer assembly and the heat loss of the device are reduced, heat can be dissipated in time, and the synchronous rectification modules are arranged on the upper side and the lower side of the heat dissipation block, so that the electric energy utilization rate of the device and the small and exquisite appearance are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of rectifiers, and in particular to a rectifier. Background Art

[0002] In the prior art, industrial low-voltage and high-current rectifiers are usually only equipped with one transformer. Although this can reduce materials and equipment size, it will cause excessive heat concentration and difficulty in heat dissipation during the operation of the rectifier, resulting in large heat loss, high power loss, and high equipment failure rate. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a rectifier device to solve the problem that the existing rectifier device is usually only provided with one transformer to reduce materials and reduce equipment size, which is prone to excessively concentrated heat and difficulty in heat dissipation.

[0004] In order to solve the above technical problems, the technical solution used in the present invention is:

[0005] A rectifier device described in the present invention includes a first heat sink and a second heat sink that are arranged in parallel and at intervals, and one or more transformer assemblies. The transformer assembly is located between the first heat sink and the second heat sink, and is arranged at intervals along the parallel extension direction of the first heat sink and the second heat sink. A synchronous rectifier module corresponding to the transformer assembly is arranged on the upper and lower sides of one of the heat sinks. The heat sink, the synchronous rectifier module and the corresponding transformer assembly form a current circuit, and the transformer assembly and another heat sink form another current circuit.

[0006] Preferably, the upper side and the lower side of the first heat dissipation block are provided with extension parts extending toward the second heat dissipation block, and the extension parts and the corresponding upper side or lower side of the first heat dissipation block together constitute a support part;

[0007] The synchronous rectification module is fixed to the support portion, and a driving module corresponding to the synchronous rectification module is arranged on the side of the first heat dissipation block facing away from the second heat dissipation block.

[0008] Further preferably, the overlapping area between the support portion and each of the synchronous rectifier modules is not less than the cross-sectional area of ​​the synchronous rectifier module; and / or,

[0009] The extension portion continuously extends from one end to the other end of the first heat dissipation block, and the extension portion and the first heat dissipation block are an integrated structure.

[0010] Preferably, the synchronous rectification module comprises a circuit board, a first output element and two second output elements arranged in parallel, the first output element is symmetrically and parallelly provided with two rows of Mosfet chips, the two rows of Mosfet chips are separated by a preset distance, the second output element within the preset distance is electrically connected to the transformer assembly, and the Mosfet chips in each row are arranged at equal intervals and are electrically connected to the first output element;

[0011] The second output elements are symmetrically arranged on both sides of the first output element, and each of the second output elements and one of the rows of the Mosfet chips are located on the same side of the first output element, and the Mosfet chips in each row are electrically connected to the second output elements on the same side, and the second output elements are electrically connected to the heat sink of the rectifier device after being attached;

[0012] The circuit board is provided with a first through hole, the two rows of Mosfet chips pass through the first through hole, the circuit board is stacked on the second output element, and each of the Mosfet chips is electrically connected to the circuit board.

[0013] Further preferably, the synchronous rectification module further comprises an insulating plate, wherein the insulating plate is located below the first output element and is bonded to the first output element, and the other side of the insulating plate is bonded to a heat sink of the rectification device.

[0014] Further preferably, the second output element is in the shape of a plate, the Mosfet chip is electrically connected to the second output element on the top surface of the second output element, and the bottom surface of the second output element and the bottom surface of the first insulating plate are located on the same horizontal plane.

[0015] Further preferably, the first output element comprises a strip-shaped flat plate base, the flat plate base is provided with convex strips within the preset distance along the long side direction thereof, and the transformer assembly is electrically connected to the convex strips.

[0016] Further preferably, the synchronous rectification module is connected to the first heat sink by bolts;

[0017] The length of the long side of the convex strip is shorter than the length of the long side of the flat plate base, and the convex strip is centrally located on the flat plate base, and a notch is formed after the middle of the convex strip is broken.

[0018] Preferably, the transformer assembly includes an annular magnetic core and a coil wound on the magnetic core, a conductive core is arranged through the central hole of the magnetic core along its axial direction, conductive plates are arranged at both ends of the conductive core, the conductive plates are respectively fixed and electrically connected to the first heat sink and the second heat sink of the rectifier device, and after the conductive plates are fixedly connected to the first heat sink and the second heat sink, the central axis of the magnetic core is perpendicular to the plane where the first heat sink and the second heat sink are located.

[0019] Preferably, the first heat sink is provided with a first output conductor electrically connected thereto, and the second heat sink is correspondingly provided with a second output conductor electrically connected thereto, the first output conductor and the second output conductor are mutually positive and negative output poles of the rectifier device, and are made of copper.

[0020] Compared with the prior art, the beneficial effects of the rectifier device described in the present invention are mainly reflected in:

[0021] The present invention arranges more than one transformer assembly at intervals along the parallel extension direction of the first heat sink block and the second heat sink block. On the one hand, the total current required can be shared by more than one transformer assembly to achieve current sharing, thereby reducing the heat generated by a single transformer assembly and further reducing the heat loss of the device.

[0022] On the other hand, the transformer assembly can be located in different relative position areas of the first heat sink block and the second heat sink block, so that the first heat sink block and the second heat sink block can be fully utilized to dissipate heat in time, avoiding the problem that the current is concentrated on only one transformer assembly, resulting in high heat generation of the transformer assembly and limited heat dissipation area and inability to dissipate heat in time;

[0023] By arranging the synchronous rectifier module on the upper and lower sides of the heat sink, rather than only arranging it on one side of the heat sink in sequence, it is possible to avoid the need to extend the heat sink due to the addition of the transformer assembly, which would result in an increase in the internal resistance of the heat sink and the shape of the rectifier device, thereby ensuring the power utilization rate and the compactness of the device. Therefore, it is possible to solve the problem that the existing rectifier device is usually only equipped with one transformer in order to reduce materials and reduce the size of the equipment, which is prone to excessively concentrated heat and difficulty in heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other purposes, features and advantages of the present invention will become more clear by more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts in all the accompanying drawings, and the accompanying drawings are not deliberately scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0025] Figure 1A three-dimensional structural diagram of a rectifier device provided in an embodiment of the present invention (the top cover of the chassis is not shown);

[0026] Figure 2 A three-dimensional structural diagram of a rectifier device provided in an embodiment of the present invention (the bottom cover of the chassis is not shown);

[0027] Figure 3 A three-dimensional structural diagram of the first heat dissipation block and the second heat dissipation block provided in an embodiment of the present invention;

[0028] Figure 4 The three-dimensional structure of the synchronous rectification module provided in the embodiment of the present invention Figure 1 ;

[0029] Figure 5 The three-dimensional structure of the synchronous rectification module provided in the embodiment of the present invention Figure 2 ;

[0030] Figure 6 for Figure 4 A front view of

[0031] Figure 7 A three-dimensional structural diagram of the transformer assembly provided in an embodiment of the present invention;

[0032] Figure 8 for Figure 7 A front view of

[0033] Fig. 9 for Figure 7 Exploded structure diagram;

[0034] Description of the drawings: first heat sink 1, second heat sink 2, transformer assembly 3, magnetic core 301, coil 302, conductive core 303, conductive plate 304, synchronous rectifier module 4, drive module 5, extension portion 6, support portion 7, circuit board 8, first output element 9, flat base 901, convex strip 902, notch 903, second output element 10, Mosfet chip 11, first through hole 12, insulating plate 13, chassis 14, first output conductor 15, second output conductor 16, conductive block 17, first inductor 18, second inductor 19, current Hall sensor 20, control system 21, input power supply unit 22, switching power supply unit 23, temperature sensor 24. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it. However, the embodiments cited are not intended to limit the present invention. In the present embodiment, it should be understood that the orientations or positional relationships indicated by terms such as "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 cannot be understood as a limitation of the present invention.

[0036] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used in the present invention are for illustrative purposes only.

[0037] like Figure 1 and Figure 2 As shown, a rectifier device is provided for this embodiment, including a first heat sink 1 and a second heat sink 2 which are arranged in parallel and at intervals, and one or more transformer assemblies 3, wherein the transformer assemblies 3 are located between the first heat sink 1 and the second heat sink 2, and are arranged at intervals along the parallel extension direction of the first heat sink 1 and the second heat sink 2, wherein synchronous rectifier modules 4 corresponding to the transformer assemblies 3 are arranged on the upper and lower sides of one of the heat sinks, and the heat sink and the synchronous rectifier modules 4 and the corresponding transformer assemblies 3 form a current circuit, that is, the synchronous rectifier modules 4 are electrically connected to the heat sink and the corresponding transformer assemblies 3, respectively, and the transformer assemblies 3 and another heat sink form another current circuit, that is, the transformer assemblies 3 and the other heat sink are electrically connected.

[0038] It should be noted that the number of transformer components 3 in this embodiment is three, which can carry a current of 3000A. In other embodiments, the number may be two, four, etc., depending on the rectifier current and the output induced current of a single transformer component 3.

[0039] In this embodiment, more than one transformer assembly 3 is arranged at intervals along the parallel extension direction of the first heat sink 1 and the second heat sink 2. On the one hand, the required total current can be shared by more than one transformer assembly 3 to achieve current sharing, which can reduce the heat generated by a single transformer assembly 3 and thus reduce the heat loss of the device;

[0040] On the other hand, the transformer assembly 3 can be located in different relative position areas of the first heat sink 1 and the second heat sink 2, so that the first heat sink 1 and the second heat sink 2 can be fully utilized to dissipate heat in time, avoiding the problem that the current is concentrated on only one transformer assembly 3, resulting in a large amount of heat generated by the transformer assembly 3 and a limited heat dissipation area, which makes it impossible to dissipate heat in time;

[0041] By arranging the synchronous rectifier module 4 on the upper and lower sides of the heat sink, rather than only on one side of the heat sink, it is possible to avoid the need to extend the heat sink due to the addition of the transformer assembly 3, which would increase the internal resistance of the heat sink and the appearance of the rectifier device, thereby ensuring the power utilization rate and the compactness of the device. This can solve the problem that the existing rectifier device is usually only equipped with one transformer to reduce materials and reduce the size of the equipment, which can easily lead to excessively concentrated heat and difficulty in heat dissipation.

[0042] In a preferred embodiment, Figure 3 As shown, the upper and lower sides of the first heat dissipation block 1 are provided with extension portions 6 extending toward the second heat dissipation block 2, and the extension portions 6 and the corresponding upper or lower side of the first heat dissipation block 1 together form a support portion 7;

[0043] The synchronous rectifier module 4 is fixed to the support part 7 , and a driving module 5 corresponding to the synchronous rectifier module 4 is arranged on the side of the first heat dissipation block 1 facing away from the second heat dissipation block 2 . The driving module 5 is used to synchronously drive the synchronous rectifier module 4 electrically connected to the same transformer assembly 3 .

[0044] In this embodiment, an extension portion 6 is provided on the upper and lower sides of the first heat dissipation block 1. The extension portion 6 and the corresponding upper or lower side of the first heat dissipation block 1 together constitute a support portion 7, so that the synchronous rectification module 4 of the rectification device can be fixed on the support portion 7. In this way, the space on the upper and lower sides of the first heat dissipation block 1 is simultaneously utilized, avoiding the situation where the synchronous rectification module 4 is sequentially provided on only one side of the first heat dissipation block 1, thereby greatly shortening the span size at both ends of the first heat dissipation block 1, and the second heat dissipation block 2 can also be shortened accordingly, thereby greatly reducing the internal resistance of the heat dissipation block and the external dimensions and weight of the rectification device.

[0045] In a further preferred embodiment, the overlapping area of ​​the support portion 7 and each synchronous rectifier module 4 is not less than the cross-sectional area of ​​the synchronous rectifier module 4, which can ensure the stable fixation of the synchronous rectifier module 4 on the one hand, and maximize the contact area between the synchronous rectifier module 4 and the support portion 7 on the other hand, thereby increasing the heat transfer area of ​​the synchronous rectifier module 4 and improving the heat dissipation efficiency of the synchronous rectifier module 4. Preferably, the extension portion 6 extends continuously from one end to the other end of the first heat dissipation block 1, which not only ensures the structural stability of the support portion 7, but also makes full use of the side area of ​​the first heat dissipation block 1. In this embodiment, the extension portion 6 is a continuous plate-shaped, and further, the extension portion 6 and the first heat dissipation block 1 are an integrated structure, and the first heat dissipation block 11 is usually made of aluminum.

[0046] In another preferred embodiment, Figures 4 to 6 As shown, the synchronous rectification module 4 includes a circuit board 8, a first output element 9 and two second output elements 10 arranged in parallel, the first output element 9 is symmetrically and parallelly provided with two rows of Mosfet chips 11, the two rows of Mosfet chips 11 are separated by a preset distance, the second output elements 10 within the preset distance are electrically connected to the transformer assembly 3, and the Mosfet chips 11 in each row are arranged at equal intervals and are electrically connected to the first output element 9;

[0047] The second output elements 10 are symmetrically arranged on both sides of the first output element 9, and each of the second output elements 10 and one of the rows of Mosfet chips 11 are located on the same side of the first output element 9, and the Mosfet chips 11 in each row are electrically connected to the second output elements 10 on the same side, and the second output elements 10 are electrically connected to the heat sink of the rectifier device after being attached;

[0048] The circuit board 8 is provided with a first through hole 12 , and two rows of Mosfet chips 11 pass through the first through hole 12 . The circuit board 8 is stacked on the second output element 10 , and each Mosfet chip 11 is electrically connected to the circuit board 8 .

[0049] In this embodiment, a circuit board 8, a first output element 9 and two second output elements 10 are arranged in parallel. The first output element 9 is symmetrically and parallelly provided with two rows of Mosfet chips 11. The Mosfet chips 11 in each row are arranged at equal intervals and are electrically connected to the first output element 9. The two rows of Mosfet chips 11 are separated by a preset distance. The second output elements 10 within the preset distance are electrically connected to the transformer component 3 for conducting current. The second output elements 10 are symmetrically arranged on both sides of the first output element 9, and each of the second output elements 10 and one of the rows of Mosfet chips 11 is located on the same side of the first output element 9. The Mosfet chips 11 in each row are electrically connected to the second output elements 10 on the same side. The circuit board 8 is stacked on the second output element 10, and each Mosfet chip 11 is electrically connected to the circuit board 8. In this way, the synchronous rectification module 4 of this embodiment can form a symmetrical structure, thereby ensuring the current sharing effect.

[0050] The two second output elements 10 are fitted with the heat sink of the rectifier device to guide and dissipate heat. On the one hand, sufficient heat dissipation area is provided. On the other hand, the second output element 10 is in direct contact with the heat sink, which can effectively improve the heat dissipation efficiency and have good heat dissipation performance. It can be suitable for large current loads, specifically, it can be suitable for current loads of not less than 1000A.

[0051] It should be noted that in the synchronous rectification module 4, electrical connection is achieved by welding different pins of the Mosfet chip 11 to the circuit board 8 and the second output element 10 respectively, and electrical connection is achieved by welding the substrate of the Mosfet chip 11 to the first output element 9. In this way, the relative fixation of the circuit board 8, the first output element 9 and the second output element 10 is also achieved through the two columns of Mosfet chips 11.

[0052] In a further preferred embodiment, the synchronous rectification module 4 further includes an insulating plate 13, which is located below the first output element 9 and is bonded to the first output element 9 to prevent the current from directly passing through the first output element 9 and conducting with the heat sink, thereby ensuring the insulation performance of the first output element 9. The other side of the insulating plate 13 is bonded to the heat sink of the rectifier. On the one hand, this embodiment can ensure that the current can flow to the two columns of Mosfet chips 11 respectively after passing through the first output element 9 to ensure the current balancing effect. On the other hand, the upper and lower surfaces of the insulating plate 13 are bonded to the first output element 9 and the heat sink respectively. This laminated structure can improve the heat transfer efficiency, increase the heat dissipation area in direct contact with the heat sink, and thus improve the heat dissipation efficiency. Specifically, the insulating plate 13 is a ceramic plate, which is detachably connected to the first output element 9.

[0053] Furthermore, the second output element 10 is in the shape of a plate, the Mosfet chip 11 is electrically connected to the second output element 10 on the top surface of the second output element 10, and the bottom surface of the second output element 10 and the bottom surface of the first insulating plate 13 are located at the same horizontal plane, so that when installing, when the bottom surface of the insulating plate 13 is in contact with the surface of the heat sink, the bottom surface of the second output element 10 can also be in contact with the surface of the heat sink, thereby facilitating installation.

[0054] The first output element 9 and the second output element 10 are both made of copper, and the surface is nickel-plated, which plays an anti-corrosion role and can also improve the conductivity of the element. At the same time, the appearance color is more beautiful.

[0055] In a further preferred embodiment, the first output element 9 includes a strip-shaped flat base 901, and the flat base 901 is provided with a convex strip 902 within a preset distance along its long side direction. The transformer assembly 3 is electrically connected to the convex strip 902, and the induced current generated by the transformer assembly 3 is introduced into the synchronous rectification module 4 through the convex strip 902. The induced current is first conducted to the flat base 901 by the convex strip 902, and then respectively passes to the two columns of Mosfet chips 11 by the flat base 901, and then flows to the second output element 10 through the Mosfet chip 11. Preferably, the flat base 901 and the convex strip 902 are integrally formed in a T-shape, which can reduce the processing cost and avoid the influence of the processing technology difference on the conductive uniformity of the first output element 9. The convex strip 902 and the transformer assembly 3 are detachably connected to achieve electrical connection.

[0056] Further preferably, the synchronous rectifier module 4 is bolted to the first heat sink 1, the long side length of the convex strip 902 is shorter than the long side length of the flat plate base 901, and the convex strip 902 is centrally located on the flat plate base 901, and the middle of the convex strip 902 is disconnected to form a notch 903, so that fixing positions can be reserved at both ends and the middle of the flat plate base 901 for fixing the first output element 9, and its uniform and stable fixation can be ensured.

[0057] In another preferred embodiment, Figures 7 to 9 As shown, the transformer assembly 3 includes an annular magnetic core 301 and a coil 302 wound on the magnetic core 301, a conductive core 303 is arranged along the axial direction through the central hole of the magnetic core 301, and conductive plates 304 are arranged at both ends of the conductive core 303, and the conductive plates 304 are respectively fixed and electrically connected to the first heat sink 1 and the second heat sink 2 of the rectifier device, and after the conductive plates 304 are fixedly connected to the first heat sink 1 and the second heat sink 2, the central axis of the magnetic core 301 is perpendicular to the plane where the first heat sink 1 and the second heat sink 2 are located.

[0058] The axial direction of the magnetic core 301 of the transformer assembly 3 in the existing rectifier is parallel to the length direction of the heat sink, so that the magnetic lines of force can easily penetrate the chassis 14 or the shell of the rectifier, causing the shell to heat up significantly due to electromagnetic induction, resulting in a large amount of loss. In this embodiment, the transformer assembly 3 is fixed and electrically connected to the first heat sink 1 and the second heat sink 2 through the conductive plate 304, and after the conductive plate 304 is fixedly connected to the first heat sink 1 and the second heat sink 2, the central axis of the magnetic core 301 is perpendicular to the plane where the first heat sink 1 and the second heat sink 2 are located. In this way, the direction of the magnetic field generated by the coil 302 relative to the chassis 14 of the rectifier can be changed, so as to avoid the chassis 14 being located in an area with a large magnetic flux, and to avoid a large amount of magnetic lines of force penetrating the chassis 14 to generate eddy currents, thereby greatly reducing the heat generation and energy loss of the chassis 14.

[0059] In another preferred embodiment, Figure 1As shown, the first heat sink 1 is provided with a first output conductor 15 electrically connected thereto, and the second heat sink 2 is correspondingly provided with a second output conductor 16 electrically connected thereto, and the first output conductor 15 and the second output conductor 16 are mutually positive and negative output poles of the rectifier, and are made of copper. Since the existing rectifier usually uses one end of the first heat sink 1 and the second heat sink 2 as the output pole, and the first heat sink 1 and the second heat sink 2 are usually made of aluminum, aluminum is easily oxidized when exposed to the air for a long time, and the conductive performance will decrease to varying degrees, thereby affecting the rectification effect, while the present embodiment outputs through the first output conductor 15 and the second output conductor 16 made of copper, and since copper is more resistant to corrosion and oxidation, the conductive performance can remain stable for a long time. Preferably, the surfaces of the first output conductor 15 and the second output conductor 16 are galvanized to further improve the corrosion resistance. A conductive block 17 is sandwiched between the first heat dissipation block 1 and the first output conductor 15 and between the second output conductor 16 and the second heat dissipation block 2. The spacing between the output conductors and the heat dissipation blocks is designed in this way to avoid interference or collision between the first output conductor 15 and the liquid cooling pipe passing into the first heat dissipation block 1, and between the second output conductor 16 and the liquid cooling pipe passing into the second heat dissipation block 2. Of course, preferably, the conductive block 17 is also made of copper.

[0060] It should be noted that if Figure 1 and Figure 2 As shown, the rectifier device of the present invention also includes a first inductor 18 and a current Hall sensor 20 mounted on the first heat sink 1, a second inductor 19 mounted on the second heat sink 2, a control system 21, an input power unit 22, and a switch power unit 23 electrically connected to the input power unit 22. The control system 21 and the input power unit 22 are arranged on the side of the second heat sink 2 facing away from the first heat sink 1, and the switch power unit 23 is arranged on the side of the first heat sink 1 facing away from the second heat sink 2. The input power unit 22 is used to access external current, and the switch power unit 23 is used to supply power to the drive module 5 corresponding to each synchronous rectifier module 4. Each drive module 5 is connected to the control system 21 for communication. The functions of the above-mentioned components are all conventional basic functions of the rectifier device, which are well known to those skilled in the art, so they are not repeated here. The internal arrangement scheme of the rectifier device in this embodiment can keep the first output conductor 15 and the second output conductor 16 at the same side of the chassis 14 shell at the same distance, so that it can be used in parallel rectification. When the positive and negative poles need to be reversed to reverse, it is not limited by the size of the parallel rectifier housing.

[0061] In another preferred embodiment, each synchronous rectifier module 4 is correspondingly provided with a temperature sensor 24, and the temperature sensor 24 is communicatively connected with the control system 21. The temperature sensor 24 sends the monitored temperature information to the control system 21. When the temperature sensor 24 detects abnormal temperature information, the control system 21 will issue a stop or other action instruction accordingly to avoid burning of the rectifier device.

[0062] In this specification, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0063] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "other embodiments" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0064] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A rectifying device, characterized in that: It includes a first heat sink and a second heat sink that are arranged in parallel and at intervals, and one or more transformer assemblies. The transformer assembly is located between the first heat sink and the second heat sink, and is arranged at intervals along the parallel extension direction of the first heat sink and the second heat sink. A synchronous rectifier module corresponding to the transformer assembly is arranged on the upper and lower sides of one of the heat sinks. The heat sink, the synchronous rectifier module and the corresponding transformer assembly form a current circuit, and the transformer assembly and another heat sink form another current circuit.

2. The rectifier device according to claim 1, characterized in that: The upper side and the lower side of the first heat dissipation block are provided with extension parts extending toward the second heat dissipation block, and the extension parts and the corresponding upper side or lower side of the first heat dissipation block together constitute a support part; The synchronous rectification module is fixed to the support portion, and a driving module corresponding to the synchronous rectification module is arranged on the side of the first heat dissipation block facing away from the second heat dissipation block.

3. The rectifier device according to claim 2, characterized in that: The overlapping area between the support portion and each of the synchronous rectifier modules is not less than the cross-sectional area of ​​the synchronous rectifier module; and / or, The extension portion continuously extends from one end to the other end of the first heat dissipation block, and the extension portion and the first heat dissipation block are an integrated structure.

4. The rectifying device according to claim 1, characterized in that: The synchronous rectification module includes a circuit board, a first output element and two second output elements arranged in parallel, wherein the first output element is symmetrically and parallelly provided with two rows of Mosfet chips, the two rows of Mosfet chips are separated by a preset distance, the second output element within the preset distance is electrically connected to the transformer assembly, and the Mosfet chips in each row are arranged at equal intervals and are electrically connected to the first output element; The second output elements are symmetrically arranged on both sides of the first output element, and each of the second output elements and one of the rows of the Mosfet chips are located on the same side of the first output element, and the Mosfet chips in each row are electrically connected to the second output elements on the same side, and the second output elements are electrically connected to the heat sink of the rectifier device after being attached; The circuit board is provided with a first through hole, the two rows of Mosfet chips pass through the first through hole, the circuit board is stacked on the second output element, and each of the Mosfet chips is electrically connected to the circuit board.

5. The rectifying device according to claim 4, characterized in that: The synchronous rectification module further includes an insulating plate, which is located below the first output element and is attached to the first output element, and the other side of the insulating plate is attached to a heat sink of the rectification device.

6. The rectifying device according to claim 5, characterized in that: The second output element is in the shape of a plate, the Mosfet chip is electrically connected to the second output element on the top surface of the second output element, and the bottom surface of the second output element and the bottom surface of the first insulating plate are located on the same horizontal plane.

7. The rectifying device according to claim 4, characterized in that: The first output element comprises a strip-shaped flat plate base, the flat plate base is provided with convex strips within the preset distance along the long side direction thereof, and the transformer assembly is electrically connected to the convex strips.

8. The rectifying device according to claim 7, characterized in that: The synchronous rectification module is bolted to the first heat sink; The length of the long side of the convex strip is shorter than the length of the long side of the flat plate base, and the convex strip is centrally located on the flat plate base, and a notch is formed after the middle of the convex strip is broken.

9. The rectifying device according to claim 1, characterized in that: The transformer assembly includes an annular magnetic core and a coil wound on the magnetic core. A conductive core is arranged through the central hole of the magnetic core along its axial direction. Conductive plates are arranged at both ends of the conductive core. The conductive plates are respectively fixed and electrically connected to the first heat sink and the second heat sink of the rectifier device. After the conductive plates are fixedly connected to the first heat sink and the second heat sink, the central axis of the magnetic core is perpendicular to the plane where the first heat sink and the second heat sink are located.

10. The rectifying device according to claim 1, characterized in that: The first heat sink block is provided with a first output conductor electrically connected thereto, and the second heat sink block is correspondingly provided with a second output conductor electrically connected thereto. The first output conductor and the second output conductor are mutually positive and negative output poles of the rectifier device and are made of copper.

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