224G high-speed transmission cable for AI data transmission and manufacturing method thereof

Abstract

The invention provides a 224G high-speed transmission cable for AI data transmission and a manufacturing method of the 224G high-speed transmission cable, and belongs to intelligent power grids, in particular to the technical field of cables.The 224G high-speed transmission cable comprises two sets of center single bodies distributed in a central symmetry mode, a shielding supporting piece, filler, a powder layer, a shielding layer and a protective layer, and the shielding supporting piece is arranged between the two sets of center single bodies; at least one conductor piece is arranged in each group of central single bodies, and tail pins are fixedly arranged on the opposite sides of the two groups of central single bodies. According to the 224G high-speed transmission cable, the two sets of center single bodies are designed to serve as core parts of the 224G high-speed transmission cable, the shielding supporting piece is arranged between the two sets of center single bodies, one of the shielding supporting pieces is used for conducting interference shielding on the two sets of center single bodies, and the other shielding supporting piece is used for supporting an integrated structure formed by the two sets of center single bodies and the shielding supporting piece. Therefore, the shielding supporting piece has enough supporting force along the length direction of the shielding supporting piece and is used for resisting external physical acting force in actual use, and the stability of the 224G high-speed transmission cable in use is ensured.

Description

Technical Field

[0001] This invention belongs to the field of smart grid, specifically the field of cable technology, and specifically a 224G high-speed transmission cable for AI data transmission and its manufacturing method. Background Technology

[0002] 224G high-speed transmission cable is a key interconnection technology for extreme bandwidth demand scenarios such as next-generation data centers (800G / 1.6T Ethernet), artificial intelligence clusters, and supercomputing centers. It represents the peak of current electrical signal transmission rate (baud rate) (usually achieved using PAM4 modulation to reach 224 Gbps / lane), posing unprecedented challenges to cable design, materials, and manufacturing processes.

[0003] 224G copper cable technology (often referred to as DAC (direct-connect copper cable) or ACC (active copper cable)) is currently in the standardization and early deployment stage. Under 224G high-frequency signal transmission, interference and transmission loss between signals increase exponentially, requiring the use of higher precision stranding structures to reduce the loss and non-idealities caused by the "stranding effect" while maintaining necessary flexibility. Moreover, in actual use, the transmission cable also needs to withstand external physical forces, causing signal instability. Therefore, a more reasonable 224G high-speed transmission cable structure needs to be designed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a 224G high-speed transmission cable for AI data transmission and its manufacturing method, which solves the problem of unstable signal transmission in existing transmission cables under 224G high-frequency signal transmission.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A 224G high-speed transmission cable for AI data transmission, comprising: Two sets of central units are centrally symmetrically distributed. Each set of central units is provided with at least one conductor. Tail feet are fixed on opposite sides of the two sets of central units. A rectangular cavity is formed between the two sets of central units. A shielding support is provided inside the rectangular cavity. The outer sides of the two sets of central units are sequentially provided with a filler, a powder layer, a shielding layer, and a protective layer; The outer surface of the filler is in the shape of a racetrack, and the cross-sections of the powder layer, the shielding layer, and the protective layer are in the shape of a racetrack.

[0006] Preferably, the cross-sectional shape of the central unit is triangular, and the apex of the triangle is set as a flat side; The tail is fixedly connected to the side of the central unit of the triangle near the apex.

[0007] Preferably, the central monomer comprises: Multiple conductors are centrally symmetrically distributed, and a first insulating layer is provided on the outer side of the multiple conductors. The tail is integrally formed with the first insulating layer. The conductor is provided with high-purity oxygen-free copper, a silver plating layer and a third insulating layer from the inside out.

[0008] Preferably, a dividing frame is provided between multiple conductor components that are centrally symmetrically distributed; The dividing frame includes: A second central body located at the center of multiple conductor components that are centrally symmetrically distributed; A segment is fixedly connected to the outside of the second central body and located between two adjacent conductors. The number of segment is the same as the number of conductors. A shielding aluminum sheet is provided inside the segment. Each of the aforementioned segments is provided with two parallel shielding aluminum sheets; One side of the shielding aluminum sheet extends into the second central body.

[0009] Preferably, the shielding support includes: A number of linearly spaced insulating cores, the insulating cores being made of copper / zinc, are provided with a second insulator on the outside of the linearly spaced insulating cores.

[0010] Preferably, the shielding support includes: The first central body is made of polycarbonate. A zinc layer covering the outside of the first central body, the zinc layer being annular or U-shaped; The fourth insulating layer covering the outside of the zinc layer.

[0011] Preferably, the powder layer is silicon micro powder, and the shielding layer is an aluminum foil and an aluminum-magnesium alloy wire braided layer, with the aluminum foil located inside the aluminum-magnesium alloy wire braided layer.

[0012] Preferably, the multiple conductors in the same group of central units are arranged in an equidistant spiral twist / parallel straight line distribution.

[0013] Preferably, the shielding support is a carbon nanotube with a square cross-section; The inner side of the carbon nanotube is provided with periodically distributed micro-protrusions or a metal mesh is provided on the inner side of the carbon nanotube.

[0014] Another object of the present invention is to provide a method for manufacturing a 224G high-speed transmission cable for AI data transmission, which specifically includes the following steps: S1. Pre-produce shielding support components using the first extrusion equipment; S2. The planetary cable forming machine and extrusion equipment are combined in a production line to produce the center unit simultaneously. After the two sets of center units are cooled by a cooling water tank and the surface is dried, they are guided together with the shielding support to enter the channel-type straightening table to form the center body. S3. Guide the central body into the second extrusion equipment to form the filler, apply powder to the discharge end of the second extrusion equipment to form a powder layer, and weave a shielding layer on the outside. S4. Use a third extrusion device to form a protective layer on the outside of the shielding layer.

[0015] This invention provides a 224G high-speed transmission cable for AI data transmission and a method for manufacturing the same. It offers the following advantages: 1. This invention designs two sets of central units as the core of a 224G high-speed transmission cable, with a shielding support set between the two sets of central units. One function of the shielding support is to shield the two sets of central units from interference, and another function is to support the integrated structure formed by the two sets of central units and the shielding support, so that it has sufficient support force along the length of the shielding support to resist the external physical forces during actual use and ensure the stability of the 224G high-speed transmission cable during use.

[0016] 2. In this invention, by designing the outer surface of the filler to be in the shape of a racetrack, and the cross-sections of the powder layer, shielding layer, and protective layer to be in the shape of a racetrack, it can better adapt to the core structure composed of two sets of central units and shielding support members. It is rarely subjected to force along the length direction of the racetrack shape during actual use (when the length direction of the racetrack shape is subjected to force, it will rotate due to the influence of its contour), so that external forces can be applied to the shielding support members. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a 224G high-speed transmission cable for AI data transmission proposed in this invention. Figure 2 This is a schematic cross-sectional view of a 224G high-speed transmission cable for AI data transmission proposed in this invention. Figure 3 This is a three-dimensional schematic diagram of a shielding support for a 224G high-speed transmission cable for AI data transmission proposed in this invention. Figure 4 This is a schematic cross-sectional view of the conductor of a 224G high-speed transmission cable for AI data transmission proposed in this invention. Figure 5 This is a cross-sectional schematic diagram of a single component of another 224G high-speed transmission cable for AI data transmission proposed in this invention. Figure 6This is a cross-sectional schematic diagram of another shielding support for a 224G high-speed transmission cable used for AI data transmission proposed in this invention.

[0018] Among them, 1. First insulating layer; 2. Conductor; 201. High-purity oxygen-free copper; 202. Silver plating layer; 203. Third insulating layer; 3. Tail foot; 4. Rectangular cavity; 5. Flat edge; 6. Shielding support; 601. Second insulator; 602. Insulating core; 603. First central body; 604. Zinc layer; 605. Fourth insulating layer; 7. Powder layer; 8. Shielding layer; 9. Protective layer; 10. Filler; 11. Divider frame; 111. Second central body; 112. Divider; 113. Shielding aluminum sheet; a. Central unit. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: like Figure 1 - Figure 6 As shown, this embodiment of the invention provides a 224G high-speed transmission cable for AI data transmission, comprising: two sets of centrally symmetrically distributed central units a, shielding support 6, filler 10, powder layer 7, shielding layer 8, and protective layer 9.

[0021] Among them, the two sets of central single units a serve as the core of the 224G high-speed transmission cable (the conductor part actually used to transmit electrical signals). The shielding support 6 is set between the two sets of central single units a. One of its functions is to shield the two sets of central single units a from interference. Another function is to support the integrated structure formed by the two sets of central single units a and the shielding support 6, so that it has sufficient support force along the length of the shielding support 6 to resist the external physical force during actual use and ensure the stability of the 224G high-speed transmission cable during use.

[0022] Specifically, each group of central unit a is equipped with at least one conductor 2, which is a single signal transmission unit in actual use. This design enables each group of central unit a to transmit multiple signals, allowing the 224G high-speed transmission cable to meet the signal transmission requirements of multiple channels. Tail feet 3 are fixedly provided on opposite sides of the two groups of central units a, and the tail feet 3 are supported between the two groups of central units a, forming a rectangular cavity 4 between the two groups of central units a. The tail feet 3 of the two groups of central units a are located at both ends of the rectangular cavity 4. Shielding support members 6 are provided inside the rectangular cavity 4. This design satisfies the requirement that the shielding support members 6 be placed between the two groups of central units a, ensuring that the shielding support members 6 can shield the two groups of central units a from interference and avoid signal interference between the two groups of central units a. This design also ensures the tightness of the connection between the shielding support members 6 and the two groups of central units a, and allows a single shielding support member 6 to simultaneously support and protect the two groups of central units a.

[0023] The outer sides of the two sets of central monomers a are sequentially provided with filler 10, powder layer 7, shielding layer 8 and protective layer 9; wherein, filler 10 is a porous filler material, such as one or more of foamed polyethylene, foamed polypropylene, polyurethane foam, silicone rubber foam, etc., used in a layered combination; wherein, powder layer 7 is talc powder, mica powder, calcium carbonate powder, semi-conductive shielding powder, etc., and its main function is to separate shielding layer 8 (generally shielding layer 8 is set as a woven mesh), to prevent shielding layer 8 from sticking or embedding with filler 10 and other structural changes, so as to ensure that shielding layer 8 can fully function; protective layer 9 is one or more of polyvinyl chloride, polyethylene, thermoplastic polyurethane, chlorosulfonated polyethylene, used in a layered combination, and its main function is protection, and protective layer 9 needs to have a water-proof layer.

[0024] In one embodiment, such as Figure 2 As shown, the cross-sectional shape of the central unit a is triangular. The sides of the two sets of central units a are opposite each other, and the vertices are opposite to each other. The vertices of the triangle are set as flat sides 5, which makes the shape of the central unit a smoother. If too much material is used at the vertices of the central unit a, the thickness of the filler 10 in that part will be reduced, affecting the cushioning effect of the filler 10. The tail foot 3 is fixedly connected to the side of the central unit a of the triangle near the vertices.

[0025] The two sets of central unit a are combined into a long strip shape, and after being covered with filler 10, powder layer 7, shielding layer 8 and protective layer 9, they form a long strip racetrack shape. The shape of the 224G high-speed transmission cable is easy to maintain. Figure 2 In the state shown, the force is mostly applied in the up and down direction (when subjected to lateral force, the 224G high-speed transmission cable itself will rotate), so that the shielding support 6 can play a stable supporting role. Generally, the height of the shielding support 6 is greater than the height of the multiple conductors 2 stacked in the central unit a.

[0026] In one embodiment, the central unit a includes: multiple conductors 2 arranged in a centrally symmetrical manner, a first insulating layer 1 disposed on the outer side of the multiple conductors 2, and a tail 3 integrally disposed with the first insulating layer 1. The first insulating layer 1 and the tail 3 are wrapped around the outer side of the multiple conductors 2 arranged in a centrally symmetrical manner using an extrusion molding device. The material of the first insulating layer 1 and the tail 3 is polyurethane.

[0027] The conductor 2 is provided with high-purity oxygen-free copper 201, silver plating layer 202 and third insulating layer 203 from the inside to the outside. High-purity oxygen-free copper 201 ensures the consistency of its resistance. Silver plating layer 202 is located on the outside of high-purity oxygen-free copper 201. Silver plating layer 202 is used to reduce the influence of edge current collection effect of high-purity oxygen-free copper 201 on signal transmission. The third insulating layer 203 is silicone rubber, which has sufficient high temperature resistance.

[0028] The multiple conductors 2, which are centrally symmetrically distributed, can be arranged in conventional straight / helical cross-linking methods, among which the helical cross-linking method is more conducive to signal interference.

[0029] In one embodiment, a divider 11 is provided between multiple conductors 2 that are centrally symmetrically distributed. The divider 11 is used to isolate signal interference between the multiple conductors 2 in the central unit a, so as to ensure the stability of signal transmission.

[0030] Specifically, the divider 11 includes: a second central body 111 located at the center of multiple conductors 2 that are centrally symmetrically distributed; and a divider 112 fixedly connected to the outside of the second central body 111 and located between two adjacent conductors 2. The number of dividers 112 is the same as the number of conductors 2. A shielding aluminum sheet 113 is provided inside the divider 112.

[0031] The dividing frame 11 has a radial shape and is used to isolate multiple conductors 2 that are centrally symmetrically distributed. The dividing frame 11 can also be used to position the multiple conductors 2, reducing the actual processing difficulty (in 224G high-speed transmission cables, the cross-linking accuracy of multiple conductors 2 and the uniformity of the pitch will affect the signal transmission. Therefore, in the production process of 224G high-speed transmission cables, a higher precision cabling machine is required). The shielding aluminum sheet 113 is used to isolate signal interference between two adjacent conductors 2.

[0032] Each segment 112 is provided with two parallel shielding aluminum sheets 113. The two shielding aluminum sheets 113 have a better effect and can be close to the outside of the segment 112. Compared with a single structure, the effect is better. One side of the shielding aluminum sheet 113 extends into the second central body 111. The shielding aluminum sheet 113 serves as a skeleton (the second central body 111 and the segment 112 serve as the base material), making the overall structure of the segment frame 11 more stable.

[0033] In one embodiment, such as Figure 3 As shown, the shielding support 6 specifically includes: a plurality of insulating cores 602 arranged in a linear interval, the insulating cores 602 being made of copper / zinc, and a second insulator 601 being provided on the outer side of the plurality of insulating cores 602 arranged in a linear interval.

[0034] In the above structural design, the insulating core 602 plays an anti-interference role, and the insulating core 602 can also reduce the compressibility of the shielding support 6, so that it has sufficient support.

[0035] In another embodiment, such as Figure 6 As shown, the shielding support 6 includes: a first central body 603, a zinc layer 604 covering the outside of the first central body 603, and a fourth insulating layer 605 covering the outside of the zinc layer 604.

[0036] The zinc layer 604 is ring-shaped or U-shaped. The design of the first central body 603 can reduce the amount of material used in the zinc layer 604. The first central body 603 is made of polycarbonate, which is a rigid plastic and can provide good support. The fourth insulating layer 605 is used to protect the zinc layer 604 and is made of perfluoroether rubber.

[0037] In one embodiment, the powder layer 7 is silicon micro powder, and the shielding layer 8 is an aluminum foil and an aluminum-magnesium alloy wire braided layer. The aluminum foil is located inside the aluminum-magnesium alloy wire braided layer. The shielding layer 8 formed by the combination of aluminum foil and aluminum-magnesium alloy wire braided layer has a better shielding effect, and the aluminum foil can prevent the aluminum-magnesium alloy wire braided layer from embedding into the inner layer material. The powder layer 7 also serves to protect the aluminum-magnesium alloy wire braided layer.

[0038] In one embodiment, multiple conductors 2 in the same group of central units a are arranged in an equidistant spiral twist / parallel straight line distribution. The equidistant spiral twist can reduce the interference between multiple conductors 2 in the same group of central units a, resulting in better performance. The aforementioned dividing frame 11 has already reduced the interference between multiple conductors 2 in the same group of central units a, and the multiple conductors 2 arranged in parallel straight lines are easier to manufacture.

[0039] In one embodiment, the shielding support 6 is a carbon nanotube with a square cross-section; the inner side of the carbon nanotube is provided with periodically distributed micro-protrusions or a metal mesh is provided on the inner side of the carbon nanotube, which not only provides physical support, but also has excellent electromagnetic shielding performance (>60dB @ 112GHz). At the same time, its low dielectric characteristic structure design effectively reduces the negative impact on signal integrity, optimizes the electromagnetic field distribution inside the carbon nanotube, and integrates the support material and shielding function.

[0040] To further enhance the effectiveness of the shielding support 6, a ceramic layer or an engineering plastic layer can be designed on the outside of the shielding support 6. These layers have good insulation properties and can block damage to the cable, thereby increasing the cable's service life.

[0041] Example 2: This embodiment provides a method for manufacturing a 224G high-speed transmission cable for AI data transmission, used to manufacture the 224G high-speed transmission cable for AI data transmission in Embodiment 1, specifically including the following steps: S1. Pre-produce shielding support 6 using the first extrusion equipment.

[0042] If the shape is like Figure 3 The shielding support 6 structure only requires the insulating core 601 as the core to be extruded and formed into the second insulator 602 in one step.

[0043] If the shape is like Figure 6 The shielding support 6 structure shown requires a first central body 603 to be formed by wire extrusion, a zinc layer 604 to be sleeved on the outside of the first central body 603, and then the fourth insulating layer 605 to be formed using the first central body 603 and the zinc layer 604 as the core.

[0044] S2. The planetary cable forming machine and the extrusion equipment are combined to produce the center unit a simultaneously. After the two sets of center units a are cooled and dried by the cooling water tank, they are guided together with the shielding support 6 into the channel straightening table to form the center body. The straightening table is a hole-type structure with a shrinking structure, which is used to squeeze the shielding support 6 and the two sets of center units a more tightly. The center body formed is easier to form the filler 10 in the second extrusion equipment.

[0045] S3. Guide the central body into the second extrusion equipment to form the filler 10, and apply powder to the discharge end of the second extrusion equipment to form a powder layer 7, and weave a shielding layer 8 on the outside.

[0046] S4. Use a third extrusion device to form a protective layer 9 on the outside of the shielding layer 8.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 224G high-speed transmission cable for AI data transmission, characterized in that, include: Two sets of central units (a) are centrally symmetrically distributed. Each set of central units (a) is provided with at least one conductor (2). Tail feet (3) are fixedly provided on the opposite side of the two sets of central units (a). A rectangular cavity (4) is formed between the two sets of central units (a). A shielding support (6) is provided inside the rectangular cavity (4). The outer sides of the two sets of central units (a) are sequentially provided with filler (10), powder layer (7), shielding layer (8) and protective layer (9); The outer surface of the filler (10) is in the shape of a runway, and the cross-sections of the powder layer (7), the shielding layer (8), and the protective layer (9) are in the shape of a runway.

2. The 224G high-speed transmission cable for AI data transmission according to claim 1, characterized in that: The cross-sectional shape of the central unit (a) is triangular, and the apex of the triangle is set as a flat side (5). The tail (3) is fixedly connected to the side of the central unit (a) of the triangle near the apex.

3. A 224G high-speed transmission cable for AI data transmission according to claim 2, characterized in that, The central monomer (a) includes: Multiple conductors (2) are centrally symmetrically distributed, and a first insulating layer (1) is provided on the outer side of the multiple conductors (2). The tail (3) is integrally provided with the first insulating layer (1). The conductor (2) is provided with high-purity oxygen-free copper (201), silver plating layer (202) and third insulating layer (203) from the inside to the outside.

4. A 224G high-speed transmission cable for AI data transmission according to claim 3, characterized in that: A dividing frame (11) is provided between multiple conductor components (2) that are centrally symmetrically distributed. The dividing frame (11) includes: The second central body (111) is located at the center of the multiple conductors (2) that are centrally symmetrically distributed. A segment (112) is fixedly connected to the outside of the second central body (111) and located between two adjacent conductors (2). The number of segment (112) is the same as the number of conductors (2). A shielding aluminum sheet (113) is provided inside the segment (112). Each of the segmented bodies (112) is provided with two parallel shielding aluminum sheets (113). One side of the shielding aluminum sheet (113) extends into the second central body (111).

5. A 224G high-speed transmission cable for AI data transmission according to claim 1, characterized in that, The shielding support (6) includes: A number of insulating cores (602) are linearly spaced, the insulating cores (602) are made of copper / zinc, and a second insulator (601) is provided on the outside of the number of insulating cores (602) linearly spaced.

6. A 224G high-speed transmission cable for AI data transmission according to claim 1, characterized in that, The shielding support (6) includes: The first central body (603) is made of polycarbonate. A zinc layer (604) covering the outside of the first central body (603) is annular or U-shaped; A fourth insulating layer (605) covering the outside of the zinc layer (604).

7. A 224G high-speed transmission cable for AI data transmission according to claim 1, characterized in that: The powder layer (7) is silicon micro powder, and the shielding layer (8) is an aluminum foil and an aluminum-magnesium alloy wire braided layer, with the aluminum foil located inside the aluminum-magnesium alloy wire braided layer.

8. A 224G high-speed transmission cable for AI data transmission according to any one of claims 3 to 4, characterized in that: The multiple conductors (2) in the same group of central units (a) are arranged in an equidistant spiral twist / parallel straight line distribution.

9. A 224G high-speed transmission cable for AI data transmission according to claim 1, characterized in that: The shielding support (6) is a carbon nanotube with a square cross-section; The inner side of the carbon nanotube is provided with periodically distributed micro-protrusions or a metal mesh is provided on the inner side of the carbon nanotube.

10. A method for manufacturing a 224G high-speed transmission cable for AI data transmission, characterized in that, The method for manufacturing a 224G high-speed transmission cable for AI data transmission as described in any one of claims 1-9 specifically includes the following steps: S1. Pre-produce shielding support components (6) using the first extrusion equipment. S2. The planetary cable forming machine and the extrusion equipment are combined to produce the center unit (a) simultaneously. After the two sets of center units (a) are cooled by the cooling water tank and the surface is dried, they are guided together with the shielding support (6) into the channel straightening table to form the center body. S3. Guide the center body into the second extrusion equipment to form the filler (10), and apply powder to the discharge end of the second extrusion equipment to form a powder layer (7), and weave a shielding layer on the outside (8). S4. Use a third extrusion device to form a protective layer (9) on the outside of the shielding layer (8).

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