Rack busbar assembly

Abstract

The utility model discloses a rack busbar assembly, which relates to the technical field of connectors, is used for supplying power to a server and comprises a shell, two busbars, an insulating part, a heat conducting element and a fixing part, the two busbars are positioned in the shell and extend along a length direction, and the insulating part is positioned in the shell and extends along the length direction. The two busbars respectively comprise a head part, a shoulder part, a waist part and a base part in sequence along a height direction, and the head parts of the two busbars are respectively used for being electrically connected with external elements to output electric energy; the insulating part is positioned between the head parts and the shoulder parts of the two busbars and is used for isolating the two busbars; the heat conduction element is clamped between the waist parts and the base parts of the two busbars, and the heat conduction element comprises a liquid flow channel; the fixing part penetrates through the base parts of the two busbars and the heat conducting element so as to lock the two busbars and the heat conducting element in the shell, and the fixing part is electrically insulated from the two busbars. The utility model mainly aims to provide a busbar assembly of a single-runner rack, which has better heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a rack bus assembly. Background Technology

[0002] US Patent US20240212887A1 discloses a bus assembly for powering a server, including a housing, two buses, and an intermediate insulating element. The buses and the intermediate insulating element are secured to the housing by a fastener passing through the housing, the buses, and the intermediate insulating element.

[0003] However, such buses generate a significant amount of heat due to the high current. If this heat cannot be dissipated quickly, it may lead to bus failure, increasing the risk of malfunction. Current methods involve cooling the bus using external rack fans or natural convection, but as the current increases, the aforementioned designs become less efficient at dissipating heat and cannot quickly remove the heat generated by the current. Utility Model Content

[0004] The main objective of this invention is to propose a single-channel rack bus assembly with better heat dissipation performance. In addition, an improved design for a fixed bus is also proposed.

[0005] To achieve the above objectives, the present invention proposes a rack bus assembly for powering a server. The rack bus assembly includes a housing, two buses, an insulating component, a thermally conductive element, and a fixing component. The two buses are located within the housing and extend along a length direction. Each of the two buses sequentially includes a head, a shoulder, a waist, and a base along a height direction. The heads of the two buses are used for electrical connection with external components to output electrical energy. The insulating component is located between the heads and shoulders of the two buses to isolate them. The thermally conductive element is sandwiched between the waist and base of the two buses and includes a liquid flow channel. The fixing component penetrates the bases of the two buses and the thermally conductive element to secure the two buses and the thermally conductive element inside the housing. The fixing component is electrically insulated from the two buses.

[0006] In one embodiment, the maximum height of the thermally conductive element is between 40% and 80% of the maximum height of either of the two busbars, and one end of the insulating member is positioned between the shoulders of the two busbars, with one end of the insulating member being I-shaped.

[0007] In one embodiment, the insulating member is not provided between the bases of the two busbars, and the minimum distance between the bases of the two busbars is the same as the minimum distance between their waists.

[0008] In one embodiment, the heat-conducting element includes a hollow portion and a connecting portion. The hollow portion includes the liquid flow channel inside. The heat-conducting element is fixed between the two busbars by a fixing member that passes through the connecting portion. The hollow portion is located between the waist portions of the two busbars, and the connecting portion is located between the base portions of the two busbars.

[0009] This utility model also proposes a rack bus assembly for powering a server. The rack bus assembly includes a housing, two buses, an insulating element, and a heat-conducting element. The two buses are located inside the housing and extend along a length direction. Each of the two buses sequentially includes a head, a shoulder, a waist, and a base along a height direction. The heads of the two buses are used to electrically connect to external components to output electrical energy. The insulating element is located between the two buses to isolate them. The heat-conducting element includes a liquid channel located between the two buses and the housing, and at the bottom of the two buses, to remove heat from the two buses.

[0010] In one embodiment, the rack bus assembly further includes a fixing component that passes through the two busbars, the insulating element, and the thermally conductive element to secure the two busbars and the thermally conductive element inside the housing. The fixing component is electrically insulated from the two busbars.

[0011] In one embodiment, the thermally conductive element includes a C-shaped structure that covers and encloses the bottom of the two busbars.

[0012] In one embodiment, the rack bus assembly further includes a fixing component and at least two lower fixing members. The two lower fixing members respectively penetrate the corresponding bus and are located on both sides of the insulating member. The fixing component penetrates and secures the two bus, the insulating member, and the at least two lower fixing members inside the housing. Each lower fixing member includes an L-shaped structure for supporting the bottom of the heat-conducting element and suspending the heat-conducting element above the bottom of the housing.

[0013] In one embodiment, the entire thermally conductive element is located below the two busbars.

[0014] In one embodiment, the housing includes two side walls and a bottom wall connecting the two side walls. The bottom wall has two through holes for a connector that communicates with the liquid flow channel of the heat-conducting element to pass through, so as to allow coolant to enter and exit the liquid flow channel of the heat-conducting element.

[0015] One of the technical solutions of this utility model proposes a single-channel rack bus assembly that uses various fasteners to fix the heat-conducting elements below the two busbars, preventing them from slipping and ensuring that the busbars can be properly fixed in the housing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of the first embodiment of the rack bus assembly provided by this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram showing the relative relationship between the outer shell and the sealing plate.

[0019] Figure 3 for Figure 1 A schematic diagram omitting the outer shell;

[0020] Figure 4 for Figure 3 A magnified view of the head area in the image;

[0021] Figure 5 for Figure 4 A schematic diagram of a partial cross-section after being cut along section line AA;

[0022] Figure 6 for Figure 4 A schematic diagram of a partial cross-section after being cut along the BB section line;

[0023] Figure 7 for Figure 1 A schematic diagram of the appearance of the heat-conducting elements in the middle heat-conducting element group;

[0024] Figure 8 for Figure 1 A schematic diagram of the heat-conducting element group after removing part of its outer surface;

[0025] Figure 9 Partial cross-sectional schematic diagram of the second embodiment of the rack bus assembly provided by this utility model;

[0026] Figure 10 A partial cross-sectional schematic diagram of the third embodiment of the rack bus assembly provided by this utility model;

[0027] Figure 11This is a partial cross-sectional schematic diagram of the fourth embodiment of the rack bus assembly provided by this utility model.

[0028] Explanation of icon numbers:

[0029] A. Rack busbar assembly; L. Length direction; H. Height direction; H1. Maximum height of heat-conducting element; H2. Maximum height of busbar; W. Width direction; W1. Maximum width of housing; 10. Housing; 11. Main body; 111. Side opening; 111A. Protrusion; 111B. Baffle; 12. Sealing plate; 121. Waist reduction; 112. Fixing arm; 13. Support plate; 20. Busbar; 20A. First receiving groove; 21. Head; 22. Shoulder; 22A. Upper fixing hole; 23. Waist; 24. Base; 24A. Lower fixing hole; 30. Busbar; 40. Insulator; 41. Top; 42. Middle part; 43. Base; 50. Grounding bar; 60. Fixing component; 601. Horizontal part; 602. Vertical part; 603. Protrusion; 604. Guide groove; 605. Notch; 61. Upper fixing component; 62. Lower fixing component; 621. Bending platform; 70. Thermal element assembly; 71. Thermal element; 711. Fin assembly; 712. Fin; 713. Stop groove; 714. Inlet / outlet; 715. Main channel; 716. Hollow part; 717. Connecting part; 72. Connector; 74. Liquid cooling radiator base plate; 741. Body part; 742. Cover plate; 743. Second receiving groove; 744. Positioning groove; 75. Extension wall; 80. Thermally conductive insulating material layer; 90. Fixing component.

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model. If this utility model mentions "A includes / includes one B," unless explicitly excluded or not permitted by the context, "includes" or "includes" means that A includes one or more B.

[0034] It should be noted that all the drawings in this utility model are drawn to scale, and the size proportions and relative positions of each component should be included as part of the disclosure.

[0035] This invention proposes a rack busbar assembly for simultaneously powering multiple server modules located at different heights. The following design ensures the busbar is stably secured within the housing, guaranteeing proper device operation.

[0036] The design of the rack bus assembly A of this utility model will be described below using an embodiment. See Figure 1 and Figure 3 In this example, the rack bus assembly A includes many parts, among which the more important parts are a housing 10, two busbars 20 and 30, an insulator 40, two grounding bars 50, multiple fasteners 60, two thermally conductive element groups 70, a thermally conductive insulating material layer 80, and multiple fastening components 90 for fixing, such as screws and nuts of different lengths.

[0037] The design of the outer casing 10 is described below. Figure 2 The main body 11 of the outer shell 10 is a metal frame that has been folded into a roughly U-shape. It includes two side walls and a bottom wall. The bottom wall is perpendicular to the two side walls and has a matrix of multiple ventilation holes. The outer shell 10 extends in the length direction L, has a width in the width direction W, and a height in the height direction H.

[0038] The main body 11 of the outer casing 10 has a lateral opening 111 extending downward from its upper edge on both sides of its head and tail ends. In this example, there are four lateral openings 111. Each lateral opening 111 has a protruding semi-circular protrusion 111A in its middle portion. The protrusion 111A has at least one through hole for a component such as a screw to pass through. In addition, below the semi-circular protrusion 111A, there is a baffle 111B that is bent inward twice at right angles and then sunk downwards. The baffle 111B has a through hole for a component such as a screw to pass through to fix the sealing plate 12 to its outside. The surface of the baffle 111B where the through hole is located is connected to the lateral opening 111 of the outer casing 10 by two right-angle bends and is approximately parallel to the sealing plate 12.

[0039] Additionally, a sealing plate 12 is embedded in each side opening 111, the shape of which matches the side opening 111 to close it. The middle portion of the sealing plate 12 has a semi-circular constriction 121 that matches the protrusion 111A. The upper part of the sealing plate 12 has a locking hole for components such as screws to pass through, used to fix the grounding strip 50 to the inside of the main body 11. The lower center of the sealing plate 12 includes a wider pipe hole for pipeline passage. After the sealing plate 12 is embedded in the side opening 111, its inner surface abuts against the baffle 111B and is fixed thereto by screws, and the outer surface of the sealing plate 12 is substantially flush with the outer surface of the main body 11.

[0040] The main body 11 of the outer casing 10 has fixed arms 112 extending further along the length direction L at both its head and end portions, and a support plate 13 is connected to the lower opening between the two fixed arms 112. Both the fixed arms 112 and the support plate 13 are used for fixing to the external structure.

[0041] The following describes the design of bus 20. See Figure 3 , 4 As shown in the figure, busbar 20 (also known as the first busbar) is integrally formed, and the polarities of busbar 20 and busbar 30 are opposite. Busbar 20 has a head 21, a shoulder 22, a waist 23 and a base 24 connected to each other in sequence along the height direction H. The head 21, shoulder 22, waist 23 and base 24 are each rectangular strip and their inner surfaces together form an inner coplanar to abut against the surface of the insulating member 40; the thickness of the waist 23 along the width direction W is less than the thickness of the shoulder 22 and the base 24, so that the shoulder 22, waist 23 and base 24 together define and form a rectangular first receiving groove 20A extending along the length direction L.

[0042] Multiple through holes, referred to as fixing holes 22A and 24A, are provided on the side surfaces of the shoulder 22 and the base 24, respectively, to allow fasteners 60 or other components such as screws to be inserted. The fixing hole 22A located on the shoulder 22 can be referred to as the upper fixing hole 22A, and the fixing hole 24A located on the base can be referred to as the lower fixing hole 24A.

[0043] The head 21 and shoulder 22 form an L-shape and a platform, with a grounding strip 50 suspended and fixed above the platform.

[0044] The design of bus 30 is described below. The design of bus 30 is basically the same as that of bus 20, and is mirrored.

[0045] The design of insulating component 40 is described below. See Figure 6 The insulating component 40 is integrally formed from a high-resistivity material, and most of it extends uniformly along the length direction L. "Uniform" means that the shape of each cross-section along the length direction L is substantially the same. The insulating component 40 has, from top to bottom, a top 41, a middle portion 42, and a base portion 43. The top 41 is a hollow tube extending along the length direction L, with a pointed roof-like cross-section. The lower edge surface on one side of the top 41 is higher than the other side, so that the two buses 20 and 30 are misaligned and have a height difference. The middle portion 42 has a vertical plate used to isolate the bus 20 and bus 30, preventing them from short-circuiting. The left and right sides of the base portion 43 extend outwards respectively to contact and support the bus 20 and bus 30. Similarly, the left side of the base portion 43 is thicker than the right side, allowing the bus 20 and bus 30 to be misaligned and have a height difference. See [link to product details]. Figure 4 The length of the insulating component 40 in the longitudinal direction L is greater than the length of the busbars 20 and 30, so its head and tail ends will protrude from the busbars 20 and 30.

[0046] The design of grounding bar 50 is described below. See Figure 2 The two grounding bars 50 can be made of metal and are fixed to the inner sides of the main body 11 by multiple screws that pass through the sealing plate 12 and the main body 11.

[0047] The design of fastener 60 is described below. See Figure 4 and Figure 6 The design shows that multiple fasteners 60 are fixed to the upper fixing hole 22A of the shoulder 22 and the lower fixing hole 24A of the base 24 of the busbars 20 and 30 via screws or other components. The fastener 60 fixed to the shoulder 22 can be referred to as the upper fastener 61, and the fastener 60 fixed to the base 24 can be referred to as the lower fastener 62. Figure 5 The fastener 60 is integrally molded from insulating material and can be roughly divided into two parts: a horizontal part 601 and a vertical part 602. See Figure 6The horizontal portion 601 has a hollow pipe penetrating both sides of the manifold 20, allowing components such as screws to enter and pass through. The vertical portion 602 is perpendicular to the horizontal portion 601, and the inner surface of the vertical portion 602 of each fixing member 60 is flatly attached to the side surfaces of the shoulder portion 22 and the base portion 24. Taking the upper fixing member 61 at the upper fixing hole 22A as an example, its upper and lower sides extend outward along the height direction H and form a cantilever structure to cover at least a portion of the first receiving groove 20A and to block or contact the heat-conducting element 71 in the heat-conducting element group 70, so as to prevent the heat-conducting element 71 from detaching from the first receiving groove 20A in the width direction W. See Figure 5 The upper fixing member 61 also has a portion that protrudes upwards from the shoulder 22 in a direction away from the first receiving groove 20A and is cantilevered. Furthermore, the design of the fixing member 60 of the lower fixing hole 24A is largely the same as the aforementioned design, also partially cantilevered to prevent the heat-conducting element 71 from disengaging from the first receiving groove 20A in the width direction. In this example, the positions of the upper fixing hole 22A and the lower fixing hole 24A are the same in the length direction L, so the corresponding upper fixing member 61 and lower fixing member 62 are also vertically aligned, forming a gap between the two fixing members 60 to expose a portion of the heat-conducting element 71. The left and right edges of the vertical portions 602 of each fixing member 60 can abut against the groove walls of the stop groove 713 on the surface of the heat-conducting element 71 to prevent the heat-conducting element 71 from sliding along the length direction L.

[0048] The design of the outer surface of the fastener 60 varies depending on its position. The example is the position of the sealing plate 12 or the side opening 111 and the other fasteners 60 not located in the side opening 111.

[0049] See Figure 5 The outer surface of the fastener 60 located on the sealing plate 12 or the side opening 111 has two protrusions 603 formed on both sides of its surface to define a guide groove 604 between them. The guide groove 604 gradually narrows from top to bottom, maintains its width in the middle section, and gradually widens at the bottom section. The hollow tube of the fastener 60 is located in the middle section. The two protrusions 603 form a stepped notch 605 at the bottom section, with the portion suspended in the rectangular first receiving groove 20A as the boundary. That is, the thickness of the suspended portion of the protrusion 603 is thinner but still thicker than the bottom of the guide groove 604. In this way, the space reserved by the notch 605 can accommodate the baffle 111B that sinks inward after being folded, avoiding interference between the two. As for the fastener 60 not located in the side opening 111, its upper section gradually narrows downward and closes in the middle section, and it does not have the guide groove 604 and the stepped structure in the lower section. That is, the thickness of the suspended part at the bottom is the same as the height of the protrusion 603 at the top.

[0050] See Figure 5Both the busbar 30 and the insulating component 40 are provided with hollow pipes that penetrate both sides of the surface. The hollow pipes of the busbar 20, busbar 30 and insulating component 40 are aligned. During assembly, a screw can be used to pass through the hollow pipes of the busbar 20, busbar 30 and insulating component 40 and a nut can be used to clamp the two busbars 20 and 30 in them.

[0051] The design of the two heat-conducting element groups 70 is described below. See Figure 6 and Figure 7 Each of the two heat-conducting element groups 70 includes a heat-conducting element 71 and two nozzle-shaped connectors 72 at both ends.

[0052] In this example, the heat-conducting elements 71 are liquid cooling radiators extending along the length direction L. However, each heat-conducting element 71 can also be a heat-conducting pipe or a solid high thermal conductivity metal block. On the outer side plate of the heat-conducting element 71, there are a number of shallow grooves, or stop grooves 713, formed by cutting. The stop grooves 713 are correspondingly provided with the fixing member 60, which is embedded in the stop groove 713 so that its groove wall can abut against the side edge of the fixing member 60, thereby preventing the heat-conducting element 71 from sliding along the length direction L in the first receiving groove 20A. The stop groove 713 can be formed by the aforementioned cutting, or by attaching a heat-conducting or heat-insulating material block to the surface of the heat-conducting element 71 to form the stop groove 713 between the two, thus reducing costs.

[0053] In this example, the heat-conducting element 71 has a main channel 715 extending along the length direction L. See Figure 8 If the outer plate of the heat-conducting element 71 is destroyed, the main flow channel 715 can be seen to be composed of multiple alternating and connected wide and narrow flow channels. The main flow channel 715 is connected to the external pipeline only through the inlet and outlet ports 714 at both ends. A number of fin groups 711 are formed between the inner and outer plates of the heat-conducting element 71. Each fin group 711 includes multiple fins 712. Each fin 712 and another fin 712 or the internal surface of the heat-conducting element 71 are respectively divided to form a smaller secondary flow channel.

[0054] The outlet of each smaller secondary channel in the fin group 711 located in the wider flow channel faces the side of the fin 712 in the fin group 711 located in the narrower flow channel, thereby slowing down the flow rate to a certain extent and improving the heat exchange efficiency.

[0055] A transversely arranged connector 72 is provided on the surface of the head and tail of the heat-conducting element 71. One end of the connector 72 is welded to the inlet / outlet port 714 of the heat-conducting element 71, and the other end is connected to the pipeline via a retaining ring. In use, the connector 72 can obtain cooling fluid from the external pipeline and input it into the main channel 715 inside the heat-conducting element 71.

[0056] The design of the thermally conductive insulating layer 80 is described below. See Figure 4 The thermally conductive insulating material layer 80 is made of a material that is electrically insulating and has good thermal conductivity, such as a thermally conductive silicone sheet. However, it can also be made of thermal paste or a combination of multiple layers of materials with thermal conductivity and insulation properties when necessary. The thermally conductive insulating material layer 80 is disposed between the busbars 20 and 30 and their respective thermally conductive elements 71 to conduct the heat energy of the busbars to the surface of the thermally conductive elements 71, while ensuring that the thermally conductive elements 71 are electrically insulated from the busbars 20 and 30. In this example, the thermally conductive insulating material layer 80 is C-shaped and completely covers the three planes outside the groove 20A to prevent leakage.

[0057] In application, the cooling fluid enters the internal main channel 715 from one end of the heat-conducting element 71 through the connector 72 from the pipeline. After the cooling fluid flows along the length direction L and carries away the heat energy of the manifold 20, it leaves from the connector 72 at the other end of the heat-conducting element 71 to complete the cooling process.

[0058] Based on the aforementioned design framework, several variations are further proposed. The following will only describe the main differences from the specific embodiment; parts not mentioned are the same as or similar to the first embodiment. The design of the second embodiment is described below. See... Figure 9 The document discloses a partial cross-sectional schematic diagram of the second embodiment. Firstly, compared to the first embodiment where two heat-conducting elements 71 are respectively embedded in the lateral first receiving groove 20A of the busbars 20 and 30, the second embodiment has only a single heat-conducting element 71, that is, only a single liquid-cooled flow channel. The single-channel liquid-cooled flow channel of the heat-conducting element 71 is sandwiched between the two busbars 20 and 30, and the contact surfaces of the two busbars 20 and 30 and the heat-conducting element 71 are separated by a thermally conductive insulating material layer 80 to ensure electrical insulation. The larger the contact area between the heat-conducting element 71 and each busbar 20 and 30, the more significant its heat dissipation effect. Therefore, it is recommended to increase the maximum height H1 of the heat-conducting element 71 and make its maximum height account for 40% to 80% of the maximum height of the two busbars 20 and 30. Taking the busbar 20 as an example, its maximum height H2 refers to... Figure 8 The maximum straight-line distance along the height direction H between any point on the head 21 and any point on the base 24 on any cross section in the length direction L.

[0059] Specifically, in this example, the maximum height H2 of the busbar 20 is approximately 73 mm, and the maximum height H1 of the heat-conducting element 71 (liquid radiator) is approximately 34 mm. That is, the height H of the heat-conducting element 71 along the height direction is approximately 46% of the maximum height of the busbar 20.

[0060] In addition, such as Figure 9 The insulating element 40 terminates at the shoulder 22 of the busbars 20 and 30 and does not extend downwards. Furthermore, the end of the insulating element 40 is I-shaped rather than... Figure 6 The platform or T-shaped base extends to the left and right. That is, there is no insulating element 40 between the bases 24 of the two busbars 20 and 30, and the bases 24 at the bottom of the two busbars 20 and 30 do not come together again but maintain the same distance from the waist 23. In other words, the two bases 24 of the two busbars 20 and 30 are far apart from each other relative to the shoulder 22.

[0061] To fix the insulating component 40 between the two busbars 20 and 30, the heat-conducting element 71 includes a hollow portion 716 and a connecting portion 717, meaning it employs a partial connection portion 717 design to divide the flow channels. Specifically, the upper half of the heat-conducting element 71 relative to the waist 23 of the busbar 20 is the hollow portion 716, which includes a hollow liquid flow channel, while the lower half relative to the base 24 of the busbar 20 is the connecting portion 717, which is a solid metal block. (The last sentence appears to be incomplete and possibly refers to a different design.) Figure 4 As shown in the design of the lower fixing member 62, the heat-conducting element 71 can be fixed between the two busbars 20 and 30 by passing through its connecting part 717 through the lower fixing member 62 and a fixing component 90 (such as a screw).

[0062] The fixing component 90 is separated from the two busbars 20 and 30 and the heat-conducting element 71 by an electrically insulating lower fixing component 62. Therefore, the fixing component 90 and the two busbars 20 and 30 are separated by the electrically insulating lower fixing component 62 and are mutually electrically insulated.

[0063] The design of the third embodiment is described below. See Figure 10 Compared to the first embodiment, which embeds two heat-conducting elements 71 into the lateral first receiving grooves 20A of the busbars 20 and 30 respectively, the third embodiment has only a single heat-conducting element 71, that is, only a single liquid cooling channel. In the third embodiment, a C-shaped heat-conducting element 71 is fitted into one side of the two busbars 20 and 30. The waist 23 and base 24 of the two busbars 20 and 30 have the same thickness, and the shoulder 22 is thicker than the waist 23 and base 24. This thickness difference forms a space, allowing the C-shaped heat-conducting element 71 to be fitted into this space. Meanwhile, the outer surface of the shoulder 22 of the busbar 20 and the outer surface of the heat-conducting element 71 are at the same height and located on the same virtual surface. More specifically, the heat-conducting element 71 includes a liquid cooling substrate 74 disposed at the bottom of the two busbars 20 and 30 and two solid metal extension walls 75 extending upwards from the left and right side edges of its top surface.

[0064] The top surface of the liquid-cooled radiator substrate 74 facing the secondary busbars 20 and 30 has a positioning groove 744 extending along the length direction L, for embedding and fixing the end of the insulating member 40 therein. The top surfaces on the left and right sides of the liquid-cooled radiator substrate 74 are at different heights, with the positioning groove 744 as the boundary. Meanwhile, two extending walls 75 respectively allow the lower fixing member 62 to pass through and be fixed between the secondary busbars 20 and 30, as detailed below. Figure 4 In this example, the liquid-cooled radiator substrate 74 has a body portion 741 and a cover plate 742. The body portion 741 has a second receiving groove 743 extending along the length direction L in the direction opposite to the two busbars 20 and 30. The cover plate 742 is welded to the opening of the second receiving groove 743 and closes the second receiving groove 743 to serve as a main channel 715 for the flow of coolant. The internal design of its flow channel can be the same as in the first embodiment. In this example, the metal extension wall 75 is integrally formed with the body portion 741 of the liquid-cooled radiator substrate 74. In addition, the heat-conducting element 71 is separated from the two busbars 20 and 30 by a thermally conductive insulating material layer 80, forming an electrically insulating design. With this design, the heat energy of the busbars 20 and 30 can be effectively transferred to the liquid-cooled radiator substrate 74 via the extension wall 75, in addition to the heat energy of the body portion 741 of the liquid-cooled radiator substrate 74, and carried away by the coolant therein. It is worth mentioning that the internal flow channel of the heat-conducting element 71 is connected to the outside through two nozzle-shaped connectors 72 provided on the cover plate 742 to exchange coolant. That is, the bottom wall of the outer casing 10 at both ends along the length L is provided with a large opening, which is used for the inlet and outlet connectors 72 to pass through respectively.

[0065] As a further improvement to the third embodiment, the design of the fourth embodiment is described below. See Figure 10 and Figure 11 The fourth embodiment differs from the third embodiment in that both metal extension walls 75 are omitted. Conversely, the two busbars 20 and 30 are thickened to achieve the same effect as the third embodiment while maintaining a simpler design. Simultaneously, the left and right side walls of the outer casing 10 are tightly clamped within the two busbars 20 and 30 and the insulating component 40 by the upper fixing member 61 and the lower fixing member 62, respectively. That is, the maximum width W1 of the outer casing 10 is equal to the sum of the thickness of the two side walls of the outer casing 10, the maximum thickness of the portion of the two upper fixing members 61 exposed above the two busbars (i.e., the vertical portion 602), the maximum thickness of the two busbars 20 and 30, and the maximum thickness of the middle portion 42 of the insulating component 40.

[0066] In order to maintain the position of the heat-conducting element 71 without omitting the metal extension wall 75, in this example, the bottom of each lower fixing member 62 is L-shaped, that is, a bending platform 621 is provided at its lower part to support the bottom of the left and right sides of the heat-conducting element 71 and to suspend the heat-conducting element 71 above the bottom of the U-shaped housing 10.

[0067] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A rack bus assembly for supplying power to a server, characterized in that, The rack bus assembly includes: A shell; Two busbars are located inside the housing and extend along a length direction. The two busbars are respectively included in sequence along a height direction, including a head, a shoulder, a waist and a base. The heads of the two busbars are respectively used to electrically connect with external components to output electrical energy. An insulating element located between the head and shoulder of the two busbars for isolating the two busbars; A thermally conductive element, said thermally conductive element being sandwiched between the waist and the base of the two manifolds, said thermally conductive element including a liquid flow channel; and A fixing component extends through the base of the two busbars and the heat-conducting element to secure the two busbars and the heat-conducting element inside the housing, the fixing component being electrically insulated from the two busbars.

2. The rack bus assembly as described in claim 1, characterized in that, The maximum height of the heat-conducting element is between 40% and 80% of the maximum height of either of the two busbars, and one end of the insulating member is placed between the shoulders of the two busbars, with one end of the insulating member being I-shaped.

3. The rack bus assembly as described in claim 2, characterized in that, The insulating element is not provided between the bases of the two busbars, and the minimum distance between the bases of the two busbars is the same as the minimum distance between the waists of the two busbars.

4. The rack bus assembly as described in claim 3, characterized in that, The heat-conducting element includes a hollow portion and a connecting portion. The hollow portion includes the liquid flow channel inside. The heat-conducting element is fixed between the two busbars by a fixing member that passes through the connecting portion. The hollow portion is located between the waist portions of the two busbars, and the connecting portion is located between the base portions of the two busbars.

5. A rack bus assembly for supplying power to a server, characterized in that, The rack bus assembly includes: A shell; Two busbars are located inside the housing and extend along a length direction. Each of the two busbars includes a head, a shoulder, a waist and a base in sequence along a height direction. The heads of the two busbars are used to electrically connect with external components to output electrical energy. An insulating element located between the two busbars for isolating the two busbars; and A heat-conducting element includes a liquid flow channel located between the two manifolds and the housing, and on the same side of the bottom of the two manifolds, to carry away the heat energy from the two manifolds.

6. The rack bus assembly as described in claim 5, characterized in that, The rack bus assembly also includes a fixing component that passes through the two busbars, the insulating element, and the heat-conducting element to lock the two busbars and the heat-conducting element inside the housing. The fixing component is electrically insulated from the two busbars.

7. The rack bus assembly as described in claim 6, characterized in that, The heat-conducting element includes a C-shaped structure, which is fitted over and covers the bottom of the two busbars.

8. The rack bus assembly as described in claim 5, characterized in that, The rack bus assembly further includes a fixing component and at least two lower fixing components. The two lower fixing components pass through the corresponding busbars and are located on both sides of the insulating component. The fixing component passes through and locks the two busbars, the insulating component, and the at least two lower fixing components inside the housing. Each lower fixing component includes an L-shaped structure for supporting the bottom of the heat-conducting element and suspending the heat-conducting element above the bottom of the housing.

9. The rack bus assembly as described in claim 6, characterized in that, The entire thermal conductive element is located below the two busbars.

10. The rack bus assembly as described in claim 6 or 8, characterized in that, The housing includes two side walls and a bottom wall connecting the two side walls. The bottom wall has two through holes for the connectors that connect to the liquid flow channels of the heat-conducting element to pass through, so as to allow coolant to enter and exit the liquid flow channels of the heat-conducting element.

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