Liquid-cooled rectifier and heat dissipation structure thereof

Abstract

The utility model provides a liquid-cooled rectifier and a heat dissipation structure thereof, the heat dissipation structure comprises a first heat dissipation block and a second heat dissipation block which are arranged side by side, a transformer assembly of the rectifier is arranged between the first heat dissipation block and the second heat dissipation block, a first fluid channel is arranged in the first heat dissipation block, and a second fluid channel is arranged in the second heat dissipation block. A first fluid channel is arranged in the first heat dissipation block, a second fluid channel is arranged in the second heat dissipation block, an extension part extending towards the second heat dissipation block is arranged on at least one of the upper side and the lower side of the first heat dissipation block, and the extension part and the upper side or the lower side of the corresponding first heat dissipation block jointly form a supporting part used for fixing the rectifier synchronization module. According to the utility model, the synchronous modules of the rectifier can be fixed on the supporting part, so that the condition that only the synchronous modules can be sequentially arranged on the side surface of the first radiating block is avoided, the span size of the two ends of the first radiating block can be greatly shortened, and the internal resistance of the radiator and the appearance size and weight of the rectifier can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rectifier heat dissipation, and particularly relates to a liquid-cooled rectifier and its heat dissipation structure. Background Art

[0002] At present, the rectifier in a high-frequency switching power supply usually adopts a structure with aluminum bars for heat dissipation and copper bars for output. Among them, the synchronous module and its drive board are arranged in sequence along one side of the positive aluminum bar, which makes the size of the aluminum bar too long, resulting in a large, heavy and bulky rectifier. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a liquid-cooled rectifier and its heat dissipation structure, which solves the problem that the synchronous module and its drive board of the existing rectifier are arranged in sequence along one side of the positive aluminum bar, making the size of the aluminum bar too large, resulting in a large, heavy and bulky rectifier.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] The heat dissipation structure of a liquid-cooled rectifier described in the utility model includes a first heat dissipation block and a second heat dissipation block arranged side by side. It is characterized in that: a transformer assembly of the rectifier is arranged between the first heat dissipation block and the second heat dissipation block. A first fluid channel for the circulation of coolant is arranged inside the first heat dissipation block, and a second fluid channel for the circulation of coolant is arranged inside the second heat dissipation block. The first heat dissipation block is provided with an extension part extending towards the second heat dissipation block on at least one of its upper side and lower side. The extension part and the corresponding upper side or lower side of the first heat dissipation block together form a support part for fixing the rectifier synchronous module.

[0006] Preferably, the overlapping area of the support part and each synchronous module is not less than the cross-sectional area of the synchronous module.

[0007] Preferably, the extension part continuously extends from one end of the first heat dissipation block to the other end.

[0008] Preferably, the extension part and the first heat dissipation block are of an integral structure.

[0009] Preferably, the first fluid channel extends from one end of the first heat dissipation block to the other end and is distributed between the upper and lower sides of the first heat dissipation block. The extension part is located between the two ends of the first fluid channel.

[0010] More preferably, the first fluid channel at least includes two rows of continuous channels arranged at intervals up and down and communicating at one end, and the first fluid channel is evenly distributed between the upper and lower sides of the first heat dissipation block.

[0011] More preferably, the first fluid channel communicates with the second fluid channel, the first fluid channel is provided with a water inlet, and the second fluid channel is provided with a water outlet.

[0012] More preferably, both the water inlet and the water outlet are located at the same end as the output copper bar of the rectifier.

[0013] More preferably, the first fluid channel includes a first inner through hole and a second inner through hole arranged at intervals from bottom to top. Both the first inner through hole and the second inner through hole penetrate through both ends of the first heat sink. The water inlet is arranged at one end of the first inner through hole. A sealing plug is arranged at the same end as the water inlet on the second inner through hole. The other end of the first inner through hole communicates with the other end of the second inner through hole;

[0014] The second fluid channel includes a third inner through hole and a fourth inner through hole arranged at intervals from bottom to top. Both the third inner through hole and the fourth inner through hole penetrate through both ends of the second heat sink. The water outlet is arranged at one end of the third inner through hole. The sealing plug is arranged at the same end as the water outlet on the fourth inner through hole. The other end of the third inner through hole communicates with the other end of the fourth inner through hole;

[0015] Joints are respectively arranged at the second inner through hole and the fourth inner through hole near the sealing plugs thereon, and the joints are communicated through pipelines.

[0016] A liquid-cooled rectifier of the present invention includes a box body and the above-mentioned liquid-cooled rectifier heat dissipation structure. The heat dissipation structure is arranged inside the box body. On the side of the second heat sink facing away from the first heat sink, a rectifier bridge, an epoxy board and a control board are arranged. On the side of the first heat sink facing away from the second heat sink, a driving board of the rectifier synchronization module is arranged.

[0017] The beneficial effects of the heat dissipation structure of the liquid-cooled rectifier of the present invention compared with the prior art are mainly reflected in:

[0018] By arranging the extension part on at least one side of the upper side and the lower side of the first heat sink, the extension part and the corresponding upper side or lower side of the first heat sink together form the supporting part, so that the synchronization module of the rectifier can be fixed on the supporting part. In this way, the space on the upper side and / or the lower side of the first heat sink is utilized, avoiding the situation where the synchronization module can only be arranged on the side of the first heat sink in sequence. Furthermore, the span size at both ends of the first heat sink can be greatly shortened, and the second heat sink can also be correspondingly shortened, thereby greatly reducing the internal resistance of the radiator and the external dimensions and weight of the rectifier.

[0019] The beneficial effects of the liquid-cooled rectifier described in the present utility model compared with the prior art are mainly reflected in:

[0020] By using the above-mentioned heat dissipation structure of the liquid-cooled rectifier, the present utility model has a small external dimension and a light weight, and uses less materials and has a lower manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the present utility model will become more clear through the preferred embodiments of the present utility model shown in the drawings. The same reference numerals in all the drawings indicate the same parts, and the drawings are not deliberately drawn to scale in actual size, and the focus is on showing the gist of the present utility model.

[0022] Figure 1 Schematic diagram of the application of the heat dissipation structure of a liquid-cooled rectifier provided by an embodiment of the present utility model;

[0023] Figure 2 For Figure 1 Structural diagram of the first heat dissipation block in the heat dissipation structure of a liquid-cooled rectifier provided;

[0024] Figure 3 For Figure 1 Structural diagram of the second heat dissipation block in the heat dissipation structure of a liquid-cooled rectifier provided;

[0025] Figure 4 Three-dimensional view of a liquid-cooled rectifier provided by an embodiment of the present utility model;

[0026] BRIEF DESCRIPTION OF THE DRAWINGS: The first heat dissipation block 1, the second heat dissipation block 2, the transformer assembly 3, the first fluid channel 4, the first inner through hole 401, the second inner through hole 402, the second fluid channel 5, the third inner through hole 501, the fourth inner through hole 502, the extension part 6, the support part 7, the synchronization module 8, the sealing plug 9, the first communication hole 10, the second communication hole 11, the rectifier bridge 12, the epoxy board 13, the control board 14, the drive board 15, the box body 16, the water inlet 17, the water outlet 18, the joint 19, the output copper bar 20. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solution of the present utility model will be 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 utility model and be able to implement it. However, the embodiments given are not intended to limit the present utility model. In this embodiment, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model, 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 utility model.

[0028] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element and integrated with it, or there may be an intermediate element at the same time. The terms "installation", "one end", "the other end" and similar expressions used in the present utility model are only for the purpose of illustration.

[0029] This embodiment provides a heat dissipation structure for a liquid-cooled rectifier, as Figures 1 to 3 shown, including a first heat dissipation block 1 and a second heat dissipation block 2 arranged side by side. It is characterized in that: a transformer assembly 3 of the rectifier is arranged between the first heat dissipation block 1 and the second heat dissipation block 2; a first fluid channel 4 for the coolant to flow through is arranged inside the first heat dissipation block 1; a second fluid channel 5 for the coolant to flow through is arranged inside the second heat dissipation block 2; at least one side of the upper side and the lower side of the first heat dissipation block 1 is provided with an extension part 6 extending towards the second heat dissipation block 2, and the extension part 6 and the corresponding upper side or lower side of the first heat dissipation block 1 together form a support part 7 for fixing the rectifier synchronization module 8.

[0030] In the present utility model, by providing the extension part 6 on at least one side of the upper side and the lower side of the first heat dissipation block 1, and the extension part 6 and the corresponding upper side or lower side of the first heat dissipation block 1 together form the support part 7, the synchronization module 8 of the rectifier can be fixed on the support part 7. In this way, the space on the upper side and / or the lower side of the first heat dissipation block 1 is utilized, avoiding the situation where the synchronization modules 8 can only be arranged in sequence on the side surface of the first heat dissipation block 1. Furthermore, the span size at both ends of the first heat dissipation block 1 can be greatly shortened, and the second heat dissipation block 2 can also be correspondingly shortened, thereby greatly reducing the internal resistance of the radiator and the external dimensions and weight of the rectifier.

[0031] In a preferred embodiment, as Figure 2As shown, the overlapping area between the supporting part 7 and each synchronization module 8 is not less than the cross-sectional area of the synchronization module 8. On the one hand, this can ensure the stable fixation of the synchronization module 8. On the other hand, it can maximize the contact area between the synchronization module 8 and the supporting part 7, thereby increasing the heat transfer area of the synchronization module 8 and improving the heat dissipation efficiency of the synchronization module 8.

[0032] In another preferred embodiment, the extension part 6 continuously extends from one end of the first heat dissipation block 1 to the other end. This can not only ensure the structural stability of the supporting part 7, but also make full use of the side area of the first heat dissipation block 1 to increase the number of synchronization modules 8 that can be arranged. In this embodiment, the extension part 6 is a continuous plate shape.

[0033] In another preferred embodiment, as Figure 3 shown, the extension part 6 and the first heat dissipation block 1 are of an integral structure. Since the first heat dissipation block 1 is usually made of aluminum, this is convenient for integral molding.

[0034] In another preferred embodiment, the first fluid channel 4 extends from one end of the first heat dissipation block 1 to the other end and is distributed between the upper and lower sides of the first heat dissipation block 1. The extension part 6 is located between the two ends of the first fluid channel 4, so as to fully ensure the heat dissipation efficiency of the synchronization module 8 arranged on the supporting part 7.

[0035] Further preferably, the first fluid channel 4 at least includes two rows of continuous channels arranged at intervals up and down and connected at one end, and the first fluid channel 4 is evenly distributed between the upper and lower sides of the first heat dissipation block 1. In this way, when synchronization modules 8 are arranged on both the upper and lower sides of the first heat dissipation block 1, the heat dissipation rates of the synchronization modules 8 located on the upper and lower sides can be ensured simultaneously. Furthermore, the first fluid channel 4 is connected to the second fluid channel 5, and the first fluid channel 4 is provided with a water inlet 17, and the second fluid channel 5 is provided with a water outlet 18. In this way, the first fluid channel 4 and the second fluid channel 5 can form a continuous coolant flow channel, which can reduce the number of infusion pipelines and simplify the layout of the infusion pipelines. It should be noted that the settings of the water inlet 17 and the water outlet 18 are only relative, that is, the water inlet 17 and the water outlet 18 can be interchanged during use.

[0036] In a specific embodiment, as Figure 2 shown, both the water inlet 17 and the water outlet 18 are located at the same end as the output copper row 20 of the rectifier.

[0037] As an example, as Figures 1 to 3As shown, the first fluid passage 4 includes a first inner through-hole 401 and a second inner through-hole 402 arranged at intervals from bottom to top. Both the first inner through-hole 401 and the second inner through-hole 402 penetrate through both ends of the first heat sink 1. The water inlet 17 is provided at one end of the first inner through-hole 401. A sealing plug 9 is provided at one end of the second inner through-hole 402 that is the same as the water inlet 17. The other end of the first inner through-hole 401 is communicated with the other end of the second inner through-hole 402. In this embodiment, the other end of the first inner through-hole 401 is communicated with the other end of the second inner through-hole 402 through a first communication hole 10 leading from the upper side of the first heat sink 1 to the first inner through-hole 401. Sealing plugs 9 are provided at the other end of the first inner through-hole 401, the other end of the second inner through-hole 402, and the end of the first communication hole 10;

[0038] The second fluid passage 5 includes a third inner through-hole 501 and a fourth inner through-hole 502 arranged at intervals from bottom to top. Both the third inner through-hole 501 and the fourth inner through-hole 502 penetrate through both ends of the second heat sink 2. The water outlet 18 is provided at one end of the third inner through-hole 501. A sealing plug 9 is provided at one end of the fourth inner through-hole 502 that is the same as the water outlet 18. The other end of the third inner through-hole 501 is communicated with the other end of the fourth inner through-hole 502. In this embodiment, the other end of the third inner through-hole 501 is communicated with the other end of the fourth inner through-hole 502 through a second communication hole 11 leading from the upper side of the second heat sink 2 to the third inner through-hole 501. Sealing plugs 9 are provided at the other end of the third inner through-hole 501, the other end of the fourth inner through-hole 502, and the end of the second communication hole 11;

[0039] Joints 19 are respectively provided at the second inner through-hole 402 and the fourth inner through-hole 502 near the sealing plugs 9 thereon, and the joints 19 are communicated through pipelines.

[0040] In this embodiment, the first fluid passage 4 and the second fluid passage 5 form a continuous coolant circulation passage. The first inner through-hole 401 and the second inner through-hole 402, as well as the third inner through-hole 501 and the fourth inner through-hole 502, which are arranged at intervals from bottom to top, can respectively ensure the heat dissipation uniformity and consistency of the components arranged on the first heat sink 1 and the second heat sink 2. Preferably, the first inner through-hole 401 and the second inner through-hole 402, as well as the third inner through-hole 501 and the fourth inner through-hole 502, are evenly arranged at intervals from bottom to top.

[0041] On the basis of the above embodiments, an embodiment of a liquid-cooled rectifier is further provided, as Figure 1 and Figure 4As shown in the figure, the rectifier of this embodiment includes a box body 16 and the above-mentioned liquid-cooled rectifier heat dissipation structure. The heat dissipation structure is arranged inside the box body 16. The side of the second heat dissipation block 2 in the heat dissipation structure facing away from the first heat dissipation block 1 is used to arrange a rectifier bridge 12, an epoxy board 13 and a control board 14. The side of the first heat dissipation block 1 facing away from the second heat dissipation block 2 is used to arrange a driving board 15 of a rectifier synchronization module 8.

[0042] By using the above-mentioned liquid-cooled rectifier heat dissipation structure, the utility model has a small external dimension and a light weight, and uses less materials and has a lower manufacturing cost.

[0043] In this specification, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0044] In the description of this specification, the description referring to terms such as "preferred embodiment", "another embodiment", "other embodiments" or "specific examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this 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 can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0045] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as a limitation to this application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A heat dissipation structure of a liquid-cooled rectifier, comprising a first heat dissipation block and a second heat dissipation block arranged side by side, characterized in that: The transformer assembly of the rectifier is arranged between the first heat sink and the second heat sink, a first fluid channel for the circulation of coolant is arranged inside the first heat sink, and a second fluid channel for the circulation of coolant is arranged inside the second heat sink, and the first heat sink is provided with an extension portion extending toward the second heat sink on at least one of its upper and lower sides, and the extension portion and the corresponding upper or lower side of the first heat sink together constitute a support portion, and the support portion is used to fix the synchronization module of the rectifier.

2. The heat dissipation structure of a liquid-cooled rectifier according to claim 1, characterized in that: An overlapping area between the support portion and each of the synchronization modules is not less than a cross-sectional area of ​​the synchronization module.

3. The heat dissipation structure of a liquid-cooled rectifier according to claim 1, characterized in that: The extending portion continuously extends from one end to the other end of the first heat dissipation block.

4. The heat dissipation structure of a liquid-cooled rectifier according to claim 1, characterized in that: The extension portion and the first heat dissipation block are an integrated structure.

5. A heat dissipation structure of a liquid-cooled rectifier according to any one of claims 1 to 4, characterized in that: The first fluid channel extends from one end to the other end of the first heat dissipation block and is distributed between the upper and lower sides of the first heat dissipation block, and the extension portion is located between the two ends of the first fluid channel.

6. The heat dissipation structure of a liquid-cooled rectifier according to claim 5, characterized in that: The first fluid channels include at least two rows of continuous channels which are arranged vertically and spaced apart and connected at one end thereof, and the first fluid channels are evenly distributed between the upper and lower sides of the first heat dissipation block.

7. The heat dissipation structure of a liquid-cooled rectifier according to claim 6, characterized in that: The first fluid channel is communicated with the second fluid channel, and the first fluid channel is provided with a water inlet, and the second fluid channel is provided with a water outlet.

8. The heat dissipation structure of a liquid-cooled rectifier according to claim 7, characterized in that: The water inlet and the water outlet are both located at the same end as the output copper busbar of the rectifier.

9. The heat dissipation structure of a liquid-cooled rectifier according to claim 8, characterized in that: The first fluid channel comprises a first inner through hole and a second inner through hole arranged at intervals from bottom to top, the first inner through hole and the second inner through hole both pass through two ends of the first heat dissipation block, the water inlet is arranged at one end of the first inner through hole, the second inner through hole is provided with a sealing plug at the same end as the water inlet, and the other end of the first inner through hole is connected to the other end of the second inner through hole; The second fluid channel comprises a third inner through hole and a fourth inner through hole arranged at intervals from bottom to top, the third inner through hole and the fourth inner through hole both pass through two ends of the second heat dissipation block, the water outlet is arranged at one end of the third inner through hole, the fourth inner through hole is provided with the sealing plug at the same end as the water outlet, and the other end of the third inner through hole is communicated with the other end of the fourth inner through hole; The second inner through hole and the fourth inner through hole are each provided with a joint near the sealing plug thereon, and the joints are connected through pipelines.

10. A liquid-cooled rectifier, characterized in that: The rectifier includes a housing and a liquid-cooled rectifier heat dissipation structure as described in any one of claims 1 to 9, wherein the heat dissipation structure is arranged in the housing, and the side of the second heat dissipation block in the heat dissipation structure facing away from the first heat dissipation block is used to set a rectifier bridge, an epoxy board and a control board, and the side of the first heat dissipation block facing away from the second heat dissipation block is used to set a drive board of the synchronization module of the rectifier.

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