High-efficiency liquid-cooled large-current tail end bus

Abstract

The utility model discloses a high-efficiency liquid-cooled large-current end bus, which comprises a copper bar and a shell, an insulating film layer is arranged between the copper bar and the shell, the copper bar is fixedly mounted in the shell, and the copper bar is isolated from the shell through an insulating film; and a plurality of groups of external circulating liquid cooling radiating pipelines are detachably embedded in the shell between the adjacent large-current copper bars. The beneficial effects are that a plurality of groups of external circulation liquid cooling heat dissipation pipelines are detachably embedded in the housing between the adjacent large-current copper bars, so high-efficiency heat dissipation can be carried out on the large-current copper bars, and specific temperature rise requirements of the large-current copper bars are satisfied; and meanwhile, the multiple groups of external circulation liquid cooling heat dissipation pipelines are detachably embedded and installed, modular installation can be achieved, one group or multiple groups of external circulation liquid cooling heat dissipation pipelines are installed according to heat dissipation requirements, and cost is saved.

Description

Technical Field

[0001] The utility model relates to a terminal power distribution bus, in particular to a high-efficiency liquid-cooled large-current terminal bus, belonging to the technical field of power distribution equipment. Background Art

[0002] The terminal distribution busbar is a power distribution and transmission system for terminal electrical equipment, which is composed of metal plates, steel plates or aluminum plates as protective shells, conductive bars, insulating materials and related accessories.

[0003] With the development of communication and computer technology, the power demand for the terminal distribution bus is getting higher and higher. The main application scenarios include computing power rooms, liquid cooling rooms, etc. The power demand of a single cabinet in the room can reach 48KW or higher, which is much higher than the traditional demand of about 10KW. The current of the high-power terminal bus can reach 1250A, and the single-channel output capacity of the output unit can reach 100A and support multi-channel output requirements; the miniaturized design of the output unit can support the installation of more output units on the bus.

[0004] The terminal busbar copper bar and the shell are usually insulated by air or insulating materials. The national standard stipulates the temperature rise standard of the conductive copper bar and the busbar shell during normal use of the terminal busbar. In order to meet the temperature rise standard, the usual way is to increase the cross-sectional area of ​​the copper bar or enhance the thermal conductivity of the copper bar to the shell. Increasing the copper bar gauge will increase the cost. Even so, when the busbar current continues to increase, the traditional response method can no longer meet the heat dissipation requirements.

[0005] During the use of the busbar, due to the large current, more heat will be generated. By using thin film insulation material to improve the thermal conductivity of the busbar to the casing, and then cooperating with the heat sink set on the outside of the busbar casing, it has a better heat dissipation effect. However, at a higher current level, there are still problems such as uneven heat dissipation and excessive temperature rise. In particular, the heat of the conductive busbar in the middle position is difficult to dissipate quickly. Long-term high temperature can easily cause the insulating material to age too quickly, and then it is easy to cause faults such as short circuits.

[0006] Chinese patent CN218633249U discloses a low-voltage, high-current bus duct, comprising a lower shell, an upper shell, a side plate one, a side plate two and a plurality of conductive busbars, wherein the side plate one and the side plate two are respectively fixedly connected to the two sides between the lower shell and the upper shell, the conductive busbar is connected between the lower shell, the upper shell, the side plate one and the side plate two, the lower shell is composed of a support body, a plurality of strip-shaped limit heat-conducting plates, a side baffle one, a side baffle two, a plurality of heat-dissipating fins and a plurality of heat-dissipating fans, the strip-shaped limit heat-conducting plates are fixedly connected to the top of the support body, grooves matching the conductive busbars are formed between the strip-shaped limit heat-conducting plates, the side baffle one and the side baffle two are respectively fixedly connected to the two sides of the bottom end of the support body, the strip-shaped limit heat-conducting plates and the heat-dissipating fans are fixedly connected to the bottom end of the support body, and a liquid cooling groove is provided inside the support body.

[0007] Although this solution uses a liquid cooling slot and a cooling fan, the part that contacts the conductive busbar in the middle and can conduct heat dissipation is only the slot part. The slot is an open slot structure surrounded by adjacent strip-shaped limiting heat-conducting plates and the top of the support body. Since the contact area between the slot and the conductive busbar, especially the conductive busbar in the middle, is small, it cannot meet the heat dissipation requirements of the large current conductive busbar. Summary of the invention

[0008] Purpose of the invention: The purpose of the utility model is to overcome the above-mentioned technical deficiencies and provide a high-efficiency liquid-cooled high-current terminal busbar that can meet the heat dissipation requirements during high current transmission.

[0009] Technical solution: A high-efficiency liquid-cooled high-current terminal busbar, including a copper busbar and a shell, an insulating film layer is provided between the copper busbar and the shell, the copper busbar is fixedly installed inside the shell, and the copper busbar and the shell are isolated by the insulating film layer; the insulating film layer is an integral structure, laid in the installation groove of the copper busbar on the shell.

[0010] The utility model adopts an integral insulating film layer to be laid on the installation groove of the copper busbar on the shell, which can improve the insulation reliability and the heat dissipation efficiency at the same time.

[0011] Preferably, in order to further improve the heat dissipation effect, the copper busbar is isolated from the shell by an insulating film layer, and the thickness of the insulating film layer does not exceed 0.5 mm. It has good thermal conductivity and can quickly transfer the heat of the copper busbar to the aluminum shell.

[0012] Preferably, in order to supplement the heat dissipation of the high-current copper busbars, an external circulating liquid-cooling heat dissipation pipeline is detachably embedded and installed in the shell between the adjacent copper busbars.

[0013] The utility model can supplement the heat dissipation of the high-current copper busbars by detachably embedding and installing multiple sets of external circulating liquid cooling heat dissipation pipelines in the shell between adjacent high-current copper busbars, thereby meeting the heat dissipation requirements of the high-current copper busbars; at the same time, the detachably embedded installation of multiple sets of external circulating liquid cooling heat dissipation pipelines can realize modular installation and save costs.

[0014] Preferably, in order to further improve the heat dissipation effect, the housing located between the copper bars is provided with an open groove matching the external circulating liquid cooling heat dissipation pipeline, and the bottom cross-section of the open groove is a semicircular structure, and the diameter of the semicircle is equal to the outer diameter of the external circulating liquid cooling heat dissipation pipeline. By matching the bottom of the open groove with the outer diameter of the external circulating liquid cooling heat dissipation pipeline, the contact area can be increased and the heat dissipation efficiency can be improved.

[0015] Preferably, in order to further improve the heat dissipation effect and heat dissipation capacity, the number of external circulating liquid cooling heat dissipation pipes detachably embedded and installed in the shell between the adjacent copper bars is at least one, and when multiple pipes are deployed, they are arranged in sequence from the inside to the outside, and the external circulating liquid cooling heat dissipation pipes have the same outer diameter, and the outer diameter is equal to the height of the open groove. By stacking multiple external circulating liquid cooling heat dissipation pipes, the heat dissipation efficiency can be further improved on the basis of a single pipe, and the heat dissipation capacity can be improved.

[0016] In order to further improve the heat dissipation effect of the entire busbar, the outer part of the shell and the copper bar contact part is provided with heat dissipation fins. The copper bar close to one side of the shell is mainly radiated by the heat dissipation fins, which may further improve the heat dissipation effect of the entire busbar.

[0017] Beneficial effects: The utility model can provide supplementary heat dissipation for the high-current copper busbars by detachably embedding and installing multiple sets of external circulating liquid-cooling heat dissipation pipelines in the shell between adjacent high-current copper busbars, thereby meeting the heat dissipation requirements of the high-current copper busbars; at the same time, the detachable embedding and installation of multiple sets of external circulating liquid-cooling heat dissipation pipelines can realize modular installation and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model without the external circulation heat dissipation pipeline;

[0020] Figure 3 It is a three-dimensional view of the utility model;

[0021] Figure 4 It is a horizontal cross-sectional view through the center of the external circulation heat dissipation pipeline of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments 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.

[0023] like Figure 1 As shown, a high-efficiency liquid-cooled high-current terminal busbar comprises a copper busbar 1 and a shell 2, an insulating film layer is provided between the copper busbar 1 and the shell 2, the copper busbar 1 is fixedly installed inside the shell 2, and the copper busbar 1 and the shell 2 are isolated by the insulating film layer; a plurality of sets of external circulating liquid-cooling heat dissipation pipelines 3 are detachably embedded and installed in the shell 2 between adjacent high-current copper busbars 1.

[0024] The utility model can supplement the heat dissipation of the high-current copper bus 1 by detachably embedding and installing multiple sets of external circulating liquid-cooling heat dissipation pipelines 3 in the shell 2 between adjacent high-current copper bus bars 1, thereby meeting the heat dissipation requirements of the high-current copper bus 1; at the same time, the detachably embedding and installing multiple sets of external circulating liquid-cooling heat dissipation pipelines 3 can realize modular installation and save costs.

[0025] like Figure 2 As shown, in order to further improve the heat dissipation effect, the housing 2 located between the high-current copper bars 1 is provided with an open groove 21 that matches the external circulating liquid cooling heat dissipation pipeline 3, and the bottom cross-section of the open groove 21 is a semicircular structure, and the diameter of the semicircle is equal to the outer diameter of the external circulating liquid cooling heat dissipation pipeline 3. By matching the bottom of the open groove 21 with the outer diameter of the external circulating liquid cooling heat dissipation pipeline 3, the contact area can be increased and the heat dissipation efficiency can be improved.

[0026] like Figure 3 and 4 As shown, in order to further improve the heat dissipation effect and heat dissipation capacity, three external circulating liquid cooling heat dissipation pipes 3 are detachably embedded and installed in the housing 2 between the adjacent high-current copper bars 1, and are arranged from the inside to the outside in sequence. The outer diameter of the external circulating liquid cooling heat dissipation pipe 3 is the same as the height of the opening groove 21. By stacking multiple external circulating liquid cooling heat dissipation pipes 3, the heat dissipation efficiency can be further improved on the basis of a single pipe, and the heat dissipation capacity can be improved.

[0027] like Figure 1 , 2 As shown in Figure 3, in order to further improve the heat dissipation effect of the entire busbar, the outer part of the shell 2 in contact with the copper busbar 1 is provided with heat dissipation fins 4. The copper busbar 1 close to the side of the shell 2 is mainly cooled by the heat dissipation fins 4, which may further improve the heat dissipation effect of the entire busbar.

[0028] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-efficiency liquid-cooled high-current terminal busbar, comprising a copper bar (1) and a shell (2), wherein an insulating film layer is provided between the copper bar (1) and the shell (2), wherein the copper bar (1) is fixedly mounted inside the shell (2), and the copper bar (1) and the shell (2) are isolated by the insulating film layer; characterized in that: The insulating film layer is an integral structure and is laid in the installation groove of the copper busbar (1) on the shell (2).

2. The high-efficiency liquid-cooled high-current terminal busbar according to claim 1 is characterized in that: The thickness of the insulating film layer shall not exceed 0.5 mm.

3. The high-efficiency liquid-cooled high-current terminal busbar according to claim 1 is characterized in that: An external circulating liquid cooling heat dissipation pipeline (3) is detachably embedded and installed in the housing (2) between the adjacent copper bars (1).

4. The high-efficiency liquid-cooled high-current terminal busbar according to claim 1 is characterized in that: The shell (2) located between the copper bars (1) is provided with an open groove (21) matching the external circulating liquid cooling heat dissipation pipeline (3); the bottom cross-section of the open groove (21) is a semicircular structure, and the diameter of the semicircle is equal to the outer diameter of the external circulating liquid cooling heat dissipation pipeline (3).

5. The high-efficiency liquid-cooled high-current terminal busbar according to claim 2 is characterized in that: The number of external circulating liquid cooling heat dissipation pipelines (3) detachably embedded and installed in the shell (2) between the adjacent copper bars (1) is at least one, and when multiple pipelines are deployed, they are arranged in sequence from the inside to the outside, and the external circulating liquid cooling heat dissipation pipelines (3) have the same outer diameter, and the outer diameter is equal to the height of the open groove (21).

6. The high-efficiency liquid-cooled high-current terminal busbar according to claim 1, characterized in that: Heat dissipation fins (4) are provided on the outside of the contact portion between the housing (2) and the copper busbar (1).

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