Cable harness

Abstract

The utility model discloses a cable harness, and relates to the technical field of electrical connection, the cable harness is used for being electrically connected with a rack busbar, the cable harness comprises a shell, two terminal modules and a power supply conductor, the shell is provided with two protruding parts arranged at intervals, each protruding part is provided with an opening, and the two openings are oppositely arranged; the two terminal modules are embedded in the shell, the front end of each terminal module is exposed out of one opening, each terminal module comprises an inner terminal, an outer terminal and a conductive block which are stacked, and the conductive block is partially clamped between the rear end of the inner terminal and the rear end of the outer terminal; the front end of the power supply conductor is connected to the surface, away from the inner terminal, of the outer terminal. The power supply conductor is electrically connected with the conductive block. The cable harness provided by the utility model aims to improve the electric transmission efficiency and the heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection technology, and in particular to a cable harness. Background Technology

[0002] Rack buses are power distribution systems designed for data center server racks, conforming to the OCP (Open Compute Project) specification. The primary function of rack buses is to efficiently and securely transmit power from the power supply rack or PSU (Power Supply Unit) to the individual server nodes within the server rack via copper busbars.

[0003] Existing connectors for rack busbars typically include two terminal modules. These modules clamp the connection point of the rack busbar to enable current conduction. Each terminal module includes two terminals and a metal pad. The metal pad is positioned on the same side of the two terminals. Both electrical and heat transfer can only occur through the metal pad to the two terminals, resulting in fewer paths for electrical and heat transfer and lower efficiency in both electrical transmission and heat dissipation. Utility Model Content

[0004] The main purpose of this invention is to propose a cable harness that increases the paths for electrical and heat transmission, thereby improving electrical transmission efficiency and heat dissipation efficiency.

[0005] To achieve the above objectives, the present invention proposes a cable harness for electrical connection to a rack busbar. The cable harness includes a housing, two terminal modules, and a power supply conductor. The housing has two spaced-apart protrusions, each with an opening, and the two openings are arranged opposite to each other. Both terminal modules are embedded in the housing, and the front end of each terminal module is exposed through one of the openings. Each terminal module includes an inner terminal, an outer terminal, and a conductive block stacked together. The conductive block is partially sandwiched between the rear end of the inner terminal and the rear end of the outer terminal. The front end of the power supply conductor is connected to the surface of the outer terminal facing away from the inner terminal, and the power supply conductor is electrically connected to the conductive block.

[0006] In one embodiment, the rear end of the outer terminal extends to form a connecting portion and a clamping portion. The connecting portion is at an angle to the surface of the outer terminal away from the inner terminal. The clamping portion extends toward the front end away from the outer terminal and is at an angle to the connecting portion. The connecting portion, the clamping portion, and the rear end of the inner terminal enclose a groove, and the conductive block is clamped in the groove.

[0007] In one embodiment, the conductive block includes a first portion and a second portion, the first portion being sandwiched within the groove, and the second portion being exposed in the groove. Steps are formed on opposite sides between the first portion and the second portion, such that the surface of the outer terminal away from the inner terminal is flush with one surface of the second portion, and the surface of the inner terminal away from the outer terminal is flush with the other surface of the second portion.

[0008] In one embodiment, each of the terminal modules further includes a heat sink disposed on the surface of the power supply conductor opposite to the external terminal.

[0009] In one embodiment, the two ends of the heat sink in the horizontal direction protrude and are exposed on opposite sides of the front end of the power supply conductor.

[0010] In one embodiment, the rear end of the inner terminal, the first part of the conductive block, the rear end of the outer terminal, the power supply conductor, and the heat sink are all provided with through first connecting holes. A first connector passes through multiple first connecting holes to connect the inner terminal, the first part of the conductive block, the outer terminal, the power supply conductor, and the heat sink.

[0011] In one embodiment, the second part of the conductive block, the power supply conductor, and the heat sink are all provided with through second connection holes, and the second connector passes through multiple second connection holes to connect the second part of the conductive block, the power supply conductor, and the heat sink.

[0012] In one embodiment, the heat sink includes a heat sink body and a plurality of heat sinks, the plurality of heat sinks being spaced apart on one surface of the heat sink body, and the other surface of the heat sink body being connected to the surface of the power supply conductor opposite to the external terminal.

[0013] In one embodiment, the terminal module further includes a temperature sensor electrically connected to the heat dissipation body.

[0014] In one embodiment, the rear end of the power supply conductor is a soft copper busbar or a wire.

[0015] The technical solution of this utility model uses a conductive block sandwiched between the rear ends of the inner terminal and the outer terminal, and the power supply conductor and the outer terminal are electrically connected to the conductive block. The current transmission paths are power supply conductor-outer terminal, power supply conductor-outer terminal-conductive block-inner terminal, power supply conductor-conductive block-outer terminal, and power supply conductor-conductive block-inner terminal, which improves the current transmission efficiency. The heat transmission paths are inner terminal-conductive block-power supply conductor, outer terminal-conductive block-power supply conductor, outer terminal-power supply conductor, and inner terminal-conductive block-outer terminal-power supply conductor, which improves the heat dissipation efficiency. 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 a cable harness embodiment provided by this utility model;

[0018] Figure 2 A schematic diagram of a terminal module in a cable harness provided by this utility model;

[0019] Figure 3 This is a schematic diagram of another embodiment of the terminal module in the cable harness provided by this utility model.

[0020] Explanation of icon numbers:

[0021] 100. Cable harness; 1. Housing; 11. Protrusion; 111. Opening; 2. Terminal module; 21. Inner terminal; 22. Outer terminal; 221. Connecting part; 222. Clamping part; 23. Conductive block; 231. First part; 232. Second part; 24. Power supply conductor; 25. Heat sink; 251. Heat sink body; 252. Heat sink fin; 26. First connector; 27. Second connector; 28. Temperature sensor.

[0022] 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

[0023] 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.

[0024] 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.

[0025] 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 includes 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 the 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, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] Rack buses are power distribution systems designed for data center server racks, conforming to the OCP (Open Compute Project) specification. The primary function of rack buses is to efficiently and securely transmit power from the power supply rack or PSU (Power Supply Unit) to the individual server nodes within the server rack via copper busbars.

[0027] Existing connectors for rack busbars typically include two terminal modules. These modules clamp the connection point of the rack busbar to enable current conduction. Each terminal module includes two terminals and a metal pad. The metal pad is positioned on the same side of the two terminals. Both electrical and heat transfer can only occur through the metal pad to the two terminals, resulting in fewer paths for electrical and heat transfer and lower efficiency in both electrical transmission and heat dissipation.

[0028] This invention proposes a cable harness designed to increase the paths for electrical and heat transmission, thereby improving electrical transmission efficiency and heat dissipation efficiency.

[0029] Please see Figures 1 to 3 In one embodiment of this utility model, the cable harness 100 is used for electrical connection with the rack busbar. The cable harness 100 includes a housing 1, two terminal modules 2 and a power supply conductor 24. The housing 1 has two protrusions 11 spaced apart, each protrusion 11 having an opening 111, and the two openings 111 are arranged opposite to each other. Both terminal modules 2 are embedded in the housing 1, and the front end of each terminal module 2 is exposed through an opening 111. Each terminal module 2 includes an inner terminal 21, an outer terminal 22 and a conductive block 23 stacked together. The conductive block 23 is partially sandwiched between the rear end of the inner terminal 21 and the rear end of the outer terminal 22. The front end of the power supply conductor 24 is connected to the surface of the outer terminal 22 away from the inner terminal 21, and the power supply conductor 24 is electrically connected to the conductive block 23.

[0030] In this embodiment, the outer casing 1 is made of plastic to prevent short circuits and thus prevent failure of the cable harness 100. The shape of the outer casing 1 is a common shape available on the market to accommodate the connection part 221 inserted into the rack busbar, and is not further limited here. The front end of the power supply conductor 24 can be made of metal, such as aluminum alloy, and the rear end of the power supply conductor 24 can be a soft copper busbar or a cable. The inner terminal 21, outer terminal 22, and conductive block 23 in the terminal module 2 are all made of conductive metal, such as brass. The outer terminal 22 and the inner terminal 21 are stacked, with the rear end of the outer terminal 22 spaced apart from the rear end of the inner terminal 21. The outer terminal 22 and the inner terminal 21 can be V-shaped or H-shaped to clamp part of the conductive block 23. The inner terminal 21 and the outer terminal 22 can be riveted together.

[0031] The technical solution of this utility model employs a conductive block 23 sandwiched between the rear ends of the inner terminal 21 and the outer terminal 22, and both the power supply conductor 24 and the outer terminal 22 are electrically connected to the conductive block 23. Multiple current transmission paths are provided, including power supply conductor 24-outer terminal 22, power supply conductor 24-outer terminal 22-conductive block 23-inner terminal 21, power supply conductor 24-conductive block 23-outer terminal 22, and power supply conductor 24-conductive block 23-inner terminal 21, thus improving current transmission efficiency. Multiple heat transmission paths are also provided, including inner terminal 21-conductive block 23-power supply conductor 24, outer terminal 22-conductive block 23-power supply conductor 24, outer terminal 22-power supply conductor 24, and inner terminal 21-conductive block 23-outer terminal 22-power supply conductor 24, thus improving heat dissipation efficiency.

[0032] In an embodiment of this utility model, the rear end of the outer terminal 22 extends to form a connecting portion 221 and a clamping portion 222. The connecting portion 221 and the outer terminal 22 are at an angle to the surface of the inner terminal 21 away from the outer terminal 22. The clamping portion 222 extends toward the front end of the outer terminal 22 and is at an angle to the connecting portion 221. The connecting portion 221, the clamping portion 222 and the rear end of the inner terminal 21 surround to form a groove, and the conductive block 23 is clamped in the groove.

[0033] In this embodiment, the rear end of the outer terminal 22 forms a connecting portion 221 and a clamping portion 222. The connecting portion 221 is connected to the body of the outer terminal 22 at an angle, and the clamping portion 222 is connected to the connecting portion 221 at an angle. The specific angle of the angle can be an acute angle, a right angle, or an obtuse angle, and is not further limited here. The connecting portion 221, the clamping portion 222, and the surface of the inner terminal 21 form a groove, and a part of the conductive block 23 can be inserted into the groove. In a preferred embodiment, the connecting portion 221 is connected to the body of the outer terminal 22 at a right angle, and the clamping portion 222 is connected to the connecting portion 221 at a right angle, that is, the clamping portion 222 is arranged parallel to the body of the outer terminal 22, and the conductive block 23 is in contact with the connecting portion 221, the clamping portion 222, and the inner terminal 21 on three sides, reducing the gap between the conductive block 23 and the outer terminal 22 and the inner terminal 21, and improving the current transmission efficiency and heat transmission efficiency.

[0034] In an embodiment of this utility model, the conductive block 23 includes a first part 231 and a second part 232. The first part 231 is sandwiched in a groove, and the second part 232 is exposed in the groove. Steps are formed on the opposite sides between the first part 231 and the second part 232 so that the surface of the outer terminal 22 away from the inner terminal 21 is flush with one surface of the second part 232, and the surface of the inner terminal 21 away from the outer terminal 22 is flush with the other surface of the second part 232.

[0035] In this embodiment, the portion of the conductive block 23 sandwiched between the inner terminal 21 and the outer terminal 22 is defined as the first portion 231, and the portion of the conductive block 23 outside the inner terminal 21 and the outer terminal 22 is defined as the second portion 232. Both opposing surfaces of the first portion 231 and the second portion 232 of the conductive block 23 are formed with stepped surfaces. The surface of the clamping portion 222 of the outer terminal 22 is flush with the stepped surface, so that there is no gap between the conductive block 23 and the power supply conductor 24, thereby improving the current transmission efficiency and heat transmission efficiency.

[0036] In an embodiment of this utility model, each terminal module 2 further includes a heat sink 25, which is disposed on the surface of the power supply conductor 24 away from the outer terminal 22.

[0037] In this embodiment, the terminal module 2 further includes a heat sink 25, which is disposed on the surface of the power supply conductor 24 away from the outer terminal 22, and is used to dissipate heat from the inner terminal 21 and the outer terminal 22. The heat sink 25 is made of aluminum alloy with high heat dissipation efficiency, thereby improving the heat dissipation efficiency of the heat sink 25.

[0038] In an embodiment of this utility model, the two ends of the heat sink 25 in the horizontal direction protrude and are exposed on opposite sides of the front end of the power supply conductor 24.

[0039] In this embodiment, in the horizontal direction, the two ends of the heat sink 25 protrude and are exposed on opposite sides of the front end of the power supply conductor 24, increasing the contact area between the heat sink 25 and the air. The heat sink 25 can dissipate heat into the air through thermal radiation, thereby improving the heat dissipation efficiency of the heat sink 25 and thus improving the heat transfer efficiency of the cable harness 100.

[0040] In an embodiment of this utility model, the rear end of the inner terminal 21, the first part 231 of the conductive block 23, the rear end of the outer terminal 22, the power supply conductor 24, and the heat sink 25 are all provided with through first connection holes. The first connector 26 passes through multiple first connection holes to connect the inner terminal 21, the first part 231 of the conductive block 23, the outer terminal 22, the power supply conductor 24, and the heat sink 25.

[0041] In this embodiment, the first connector 26 passes through multiple through-holes in the rear end of the inner terminal 21, the first part 231 of the conductive block 23, the rear end of the outer terminal 22, the power supply conductor 24, and the heat sink 25, connecting the five parts—the inner terminal 21, the first part 231 of the conductive block 23, the outer terminal 22, the power supply conductor 24, and the heat sink 25—into a single unit. The first connector 26 can be a bolt or screw, etc., and is not further limited here. It is understood that in a preferred embodiment, there are two first connectors 26, and correspondingly, there are also two first connecting holes. The two first connecting holes are spaced apart in the inner terminal 21, the first part 231 of the conductive block 23, the outer terminal 22, the power supply conductor 24, and the heat sink 25, with one first connector 26 passing through one first connecting hole to improve the connection strength.

[0042] In an embodiment of this utility model, the second part 232 of the conductive block 23, the power supply conductor 24 and the heat sink 25 are all provided with through second connecting holes, and the second connecting member 27 passes through multiple second connecting holes to connect the second part 232 of the conductive block 23, the power supply conductor 24 and the heat sink 25.

[0043] In this embodiment, the second connector 27 passes through multiple through-holes in the second part 232 of the conductive block 23, the power supply conductor 24, and the heat sink 25, connecting the two parts of the conductive block 23 into one, thereby improving the connection strength.

[0044] In an embodiment of the present invention, the heat sink 25 includes a heat sink body 251 and a plurality of heat sinks 252. The plurality of heat sinks 252 are spaced apart on one surface of the heat sink body 251, and the other surface of the heat sink body 251 is connected to the surface of the power supply conductor 24 away from the external terminal 22.

[0045] In this embodiment, the heat sink 25 includes a heat sink body 251 and a plurality of heat sinks 252. The plurality of heat sinks 252 are evenly spaced on one surface of the heat sink body 251, and the other surface of the heat sink body 251 is attached to the front end of the power supply conductor 24 away from the external terminal 22. By spaced-apart heat sinks 252, the contact area between the heat sink 25 and the air is increased, and the heat dissipation efficiency is improved.

[0046] In an embodiment of this utility model, the terminal module 2 further includes a temperature sensor 28, which is electrically connected to the heat dissipation body 251.

[0047] In this embodiment, the terminal module 2 is also provided with a temperature sensor 28. The detection connector of the temperature sensor 28 is connected to the heat dissipation body 251 through the second connector 27 to detect the temperature of the heat dissipation body 251 in order to prevent the temperature from being too high and affecting the operation of the cable harness 100.

[0048] In an embodiment of this utility model, the rear end of the power supply conductor 24 is a soft copper busbar or a wire.

[0049] In this embodiment, the rear end of the power supply conductor 24 is a soft copper busbar or a wire. The soft copper busbar can carry high current and high power power transmission and has a certain degree of perturbation resistance.

[0050] 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 cable harness for electrical connection to a rack busbar, characterized in that, The cable harness includes: The outer casing has two protrusions spaced apart, each of the protrusions having an opening, and the two openings being arranged opposite to each other; Two terminal modules are provided, both of which are embedded within the housing, with the front end of each terminal module exposed through an opening. Each terminal module includes an inner terminal, an outer terminal, and a conductive block stacked together, the conductive block being partially sandwiched between the rear ends of the inner terminal and the outer terminal. A power supply conductor, the front end of which is connected to the surface of the outer terminal away from the inner terminal, and the power supply conductor is electrically connected to the conductive block.

2. The cable harness as described in claim 1, characterized in that, The rear end of the outer terminal extends to form a connecting portion and a clamping portion. The connecting portion is at an angle to the surface of the outer terminal away from the inner terminal. The clamping portion extends toward the rear end of the outer terminal and is at an angle to the connecting portion. The connecting portion, the clamping portion and the rear end of the inner terminal surround to form a groove, and the conductive block is clamped in the groove.

3. The cable harness as described in claim 2, characterized in that, The conductive block includes a first part and a second part. The first part is sandwiched in the groove, and the second part is exposed in the groove. Steps are formed on opposite sides between the first part and the second part so that the surface of the outer terminal away from the inner terminal is flush with one surface of the second part, and the surface of the inner terminal away from the outer terminal is flush with the other surface of the second part.

4. The cable harness as described in any one of claims 1 to 3, characterized in that, Each of the terminal modules further includes a heat sink disposed on the surface of the power supply conductor opposite to the external terminal.

5. The cable harness as described in claim 4, characterized in that, The two ends of the heat sink protrude in the horizontal direction and are exposed on opposite sides of the front end of the power supply conductor.

6. The cable harness as described in claim 4, characterized in that, The rear end of the inner terminal, the first part of the conductive block, the rear end of the outer terminal, the power supply conductor, and the heat sink are all provided with through first connection holes. The first connector passes through multiple first connection holes to connect the inner terminal, the first part of the conductive block, the outer terminal, the power supply conductor, and the heat sink.

7. The cable harness as described in claim 4, characterized in that, The second part of the conductive block, the power supply conductor, and the heat sink are all provided with through second connection holes. The second connector passes through multiple second connection holes to connect the second part of the conductive block, the power supply conductor, and the heat sink.

8. The cable harness as described in claim 4, characterized in that, The heat sink includes a heat sink body and a plurality of heat sinks. The plurality of heat sinks are spaced apart on one surface of the heat sink body, and the other surface of the heat sink body is connected to the surface of the power supply conductor opposite to the external terminal.

9. The cable harness as described in claim 8, characterized in that, The terminal module also includes a temperature sensor, which is electrically connected to the heat dissipation unit.

10. The cable harness as described in any one of claims 1 to 3, characterized in that, The rear end of the power supply conductor is a soft copper busbar or a wire.

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