Welding method and device of electric connector

Abstract

The invention relates to a welding method and device for an electric connector, and the method is characterized in that the electric connector comprises a wire clamping plate, a circuit board, and a plurality of conductive members used for connecting the circuit board and a transmission cable, and the wire clamping plate is provided with a threading hole which allows the transmission cable to pass through so as to be connected with the conductive members. The welding method comprises the following steps that after a set amount of tin blocks are obtained and melted, the tin blocks are attached to the set positions of all the conductive parts or all the signal lines to form welding spots, the signal lines penetrate through wire penetrating holes so that all the welding spots can make contact with the corresponding signal lines or the conductive parts respectively, all the welding spots are synchronously heated, and then welding is completed. Therefore, each signal line is connected with the corresponding conductive piece. The novel pre-tinning process is adopted, the problem that the impedance of a welding area is not easy to control due to the randomness of the tin consumption and the shape at the welding position is solved, the impedance matching of the whole electric connector is improved, the welding efficiency and the success rate can be improved, and the applicability of the welding method is improved.

Description

Technical Field

[0001] The present application relates to a welding method and device for an electrical connector, and belongs to the technical field of electrical signal transmission equipment. Background Art

[0002] As the transmission rate of high-speed signals increases, the signals have higher and higher requirements on the channels that carry them. Impedance directly affects the attenuation and reflection of high-speed signals, and can also indirectly affect the crosstalk performance between signal channels. Controlling the impedance of the entire transmission channel so that the fluctuation range of the channel impedance value is small or even close to the design value, thereby achieving impedance matching of the entire transmission link, is a basic requirement for ensuring high-speed signal transmission and is also the key to improving signal transmission rates.

[0003] As high-speed signal rates increase, signal rise time becomes shorter and shorter, which can identify smaller physical intervals and more structural details of the transmission channel. If the impedance fluctuation of the channel is too large, it will affect high-speed signal transmission or even prevent the signal from being transmitted. In the welding area between the plug of the electrical connector and the transmission cable, the randomness of the amount of tin before welding and the shape of the tin after welding directly affects the structure of the welding area of ​​the electrical connector, thereby affecting the impedance.

[0004] The existing welding methods of the plug of the electrical connector and the transmission cable include resistance welding, laser welding and HotBar welding (hot pressing welding). Among them, the resistance welding method is adopted, and the welding product has good consistency and high stability, but it needs to weld each connection separately, the welding efficiency is low, and when heating the contact, it needs to heat against the welding area, and there are specific requirements for the surrounding of the welding area. The structure around the welding area cannot be too complicated. In addition, the resistance welding method melts the metal by warming to achieve the welding effect, and it has high requirements for the temperature resistance of the structure around the welding area. If there is plastic around the welding area, it is easy to melt the plastic together. The laser welding method only requires a very small space to achieve the purpose of welding, which is very suitable for welding in scenes with small welding areas. In addition, laser welding only affects a small area, and its effect on the welding structure is small, but it needs to weld each connection separately like resistance welding, and the welding efficiency is low. In addition, laser welding requires a planar contact between the wire core and the terminal to improve the welding success rate, but most of the existing wire cores are cylindrical wire cores, which need to be flattened before welding, which increases the process complexity and cost. The HotBar welding method combined with tin bars or tin sheets can achieve unified welding of all transmission cables and plug terminals with high welding efficiency. However, since it is a whole tin sheet or tin bar, when the HotBar head melts the tin bar, the melting position of the tin bar is random, which can easily lead to inconsistent tin amount and shape in each part of the welding area after welding is completed, making the impedance of the welding area difficult to control. Summary of the invention

[0005] The present invention provides a welding method and device for an electrical connector, aiming to solve at least one of the technical problems existing in the prior art. For example, the welding method and device for an electrical connector proposed by the present invention adopts a new pre-tinning process, solves the problem that the impedance of the welding area is difficult to control due to the randomness of the tin dosage and shape of the welding point, improves the impedance matching of the entire electrical connector, can improve the welding efficiency and success rate, and improves the applicability of the welding method.

[0006] The technical solution of the present invention relates to a welding method of an electrical connector, wherein the electrical connector comprises a line card and a circuit board, and a plurality of conductive members for connecting the circuit board with a transmission cable; the line card is provided with a threading hole allowing the transmission cable to pass through to connect with the conductive member;

[0007] The welding method of the electrical connector is applied to connect the conductive member with the transmission cable, and the welding method comprises the following steps:

[0008] S100, obtaining a set amount of tin block and melting it, and attaching the tin block to a set position of each of the conductive members or each of the transmission cables to form a soldering point;

[0009] S200, passing the signal wire through the wire threading hole, so that each of the soldering points is in contact with the corresponding signal wire or the conductive member;

[0010] S300, synchronously heating all the solder joints to connect each of the signal lines to its corresponding conductive member.

[0011] Furthermore, in the step S100, the set amount of the solder block is determined according to the thickness value of the transmission cable or the length value of the welding part.

[0012] Furthermore, in the step S100, the attachment point of the solder block is determined according to the overlapping position of the conductive member and the signal line.

[0013] Furthermore, the attachment point is the middle of the overlapping position of the conductive member and the signal line.

[0014] Furthermore, the tin block is a tin sheet, a tin ball or a tin paste.

[0015] Furthermore, in the step S100, the tin block is heated to a semi-molten state or a fully molten state.

[0016] Furthermore, in the step S100, the number of the solder joints is determined according to the number of connections between the conductive member and the signal line.

[0017] On the one hand, the technical solution of the present invention also relates to a welding device for an electrical connector, which is applied to the welding method of the electrical connector in the above-mentioned embodiment, including a ball dividing device for obtaining a set amount of tin block, a laser nozzle and a pneumatic spray gun for spraying the tin block, and a welding installation accessory for synchronously heating all solder joints.

[0018] Furthermore, the welding installation accessory is provided with a fixing recess, and the contact point between the signal line and the conductive member can be embedded in the fixing recess.

[0019] The technical solution of the present invention also relates to a welding method of an electrical connector, which is used to connect the plug assembly of the electrical connector with the transmission cable. The welding method comprises the following steps:

[0020] A100, obtaining a set amount of tin block and melting it, and attaching the tin block to a set position of each of the plug components or each of the transmission cables to form a solder joint;

[0021] A200, making each of the welding points contact the corresponding transmission cable or the plug assembly;

[0022] A300. Synchronously heat all the solder joints through a HotBar head to connect the plug assembly to the transmission cable.

[0023] The beneficial effects produced by the technical solution of the present invention are at least as follows.

[0024] The present invention adopts a new pre-tinning process in the welding process of the electrical connector and the transmission cable, solves the problem that the impedance of the welding area is difficult to control due to the randomness of the tin dosage and shape of the welding point, improves the impedance matching of the entire electrical connector, and at the same time, through the newly designed HotBar head, it is conducive to achieving precise welding and realizing simultaneous welding of multiple connections, which can improve welding efficiency and success rate, reduce process complexity and cost, reduce requirements for welding environment, and improve the applicability of the welding method. The present invention introduces a pre-tinning process in the welding process of the conductive part of the electrical connector and the signal line of the transmission cable, and attaches a set amount of tin blocks to a set position before welding, which is conducive to achieving high-precision control of the amount of tin in the welding area, and the distribution of tin in the welding area after welding, so that the structural accuracy of the welding area can be effectively controlled, and then the characteristic impedance of the welding area can be effectively controlled. The welding accuracy of the welding method of the present invention is higher than that of the traditional process, and it can be applied to the welding of connections that are sensitive to temperature, and no flux is required during the welding process, so that clean welding processing can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 FIG. 4 is a basic flow chart of a welding method for an electrical connector according to an embodiment of the present invention.

[0027] Figure 2 Detailed description of the invention is given in conjunction with a flowchart of a method for welding an electrical connector according to an embodiment of the present invention.

[0028] Figure 3 is a structural exploded view of an electrical connector and a transmission cable according to an embodiment of the present invention.

[0029] Figure 4 1 is a structural connection diagram of an electrical connector and a transmission cable according to an embodiment of the present invention.

[0030] Figure 5 4 is a cross-sectional view of the connection between the electrical connector and the transmission cable according to an embodiment of the present invention.

[0031] Figure 6 FIG. 4 is a schematic diagram of the structure of a circuit board according to an embodiment of the present invention.

[0032] Figure 7 FIG. 1 is a schematic structural diagram of a plug assembly of an electrical connector according to an embodiment of the present invention.

[0033] Figure 8 Schematic diagram of a welding mounting accessory according to an embodiment of the present invention applied to an electrical connector.

[0034] Fig. 9 for Figure 8 A magnified schematic diagram of center A.

[0035] Fig.10 The figure is a comparison diagram of impedance differences caused by different tin amounts in the welding area according to the welding method of the present invention.

[0036] Description of reference numerals:

[0037] 100, electrical connector; 110, plug assembly; 111, conductive part; 112, wire card board; 113, threading hole; 114, plug partition; 115, plug connection board; 116, independent space; 200, circuit board; 300, transmission cable; 310, signal line; 400, tin block; 500, welding installation accessories; 510, fixing recess; 520, groove. DETAILED DESCRIPTION

[0038] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments herein can be combined with each other without conflict.

[0039] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, top, bottom, etc. used herein are only relative to the relative positional relationship of the components of the present invention in the drawings.

[0040] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments, not for limiting the present invention. The term "and / or" used herein includes any combination of one or more related listed items.

[0041] It should be understood that, although the terms first, second, third, etc. may be used to describe various elements in the present disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, without departing from the scope of the present disclosure, the first element may also be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0042] See also Figures 1 to 9 The welding method of the electrical connector 100 of the technical solution of the present invention, wherein the plug assembly 110 of the electrical connector 100 is provided with a terminal connected to the circuit board 200, and is connected to the transmission cable 300 through the terminal to realize signal transmission. The welding method of the electrical connector 100 of the technical solution of the present invention at least comprises the following steps:

[0043] A100. After obtaining a set amount of tin and melting it, the tin is attached to a set position of each plug assembly 110 or each transmission cable 300 to form a solder joint; it is understandable that the formed solder joint may be single or multiple. It should be noted that the tin may be attached to multiple positions of the signal line 310 of the transmission cable 300, the ground line of the shielding component and / or the shielding layer of the ground structure.

[0044] A200, making each welding point contact with its corresponding transmission cable 300 or plug assembly 110;

[0045] A300 , heat all solder joints synchronously through the HotBar head to connect the plug assembly 110 to the transmission cable 300 .

[0046] Specifically, in the welding method of the electrical connector 100 of the embodiment of the present invention, at the position of the electrical connector 100 that needs to be welded, such as the welding position of the transmission cable 300 and the terminal in the electrical connector 100, the transmission cable 300 or the terminal is pre-tinned by pre-tinning, so as to achieve the control of the amount and shape of tin at the welding position. The present invention adopts a new pre-tinning process in the welding process of the electrical connector 100 and the transmission cable 300, and the set amount of tin block 400 is attached to the set position before welding, which solves the problem that the impedance of the welding area is difficult to control due to the randomness of the amount and shape of tin at the welding point, improves the impedance matching of the entire electrical connector 100, and adopts a HotBar head (a kind of welding head) to achieve simultaneous welding of multiple connections, which can improve welding efficiency and success rate, reduce process complexity and cost, reduce requirements for welding environment, and improve the applicability of welding methods.

[0047] See also Figures 3 to 5 The electrical connector 100 of the embodiment of the present invention includes a plug assembly 110 connected to a plurality of transmission cables 300 and a socket assembly connected to a circuit board 200. When the plug assembly 110 is inserted into the socket assembly, the transmission cable 300 is indirectly connected to the circuit board 200 through the conductive member 111. Specifically, the transmission cable 300 is connected to one end of the conductive member 111, so that the plug assembly 110 is connected to the transmission cable 300, the circuit board 200 in the socket assembly is connected to the cushion, the plug assembly 110 is inserted into the socket assembly, and the other end of the conductive member 111 is connected to the cushion, thereby realizing signal transmission. The plug assembly 110 includes a plug housing (not shown in the drawings), a line card board 112, a plug connection board 115 and a plurality of plug partitions 114. The line card board 112, the plug connection board 115 and the plug partition 114 are all arranged in the plug housing. The plurality of plug partitions 114 can be parallel to each other and perpendicular to the plug connection board 115, and one side of the plurality of plug partitions 114 is inserted into the plug connection board 115. The plug connection plate 115 is disposed on the front side or the rear side of the plug partition plate 114. Figure 3 and Figure 7 , a plurality of plug partitions 114 are inserted into the line card board 112 on the side away from the circuit board 200, and the plug connection board 115 is perpendicular to the line card board 112, the line card board 112 is perpendicular to the plug partition 114, and the line card board 112 is arranged on the upper side of the plug partition 114. The line card board 112, the plug connection board 115 and the plug partition 114 are combined to form an independent space 116 for shielding, and each group of conductive members 111 is respectively arranged in an independent space 116, thereby forming an enclosure and separation of the conductive members 111, which plays a good role in shielding interference. It should be noted that the plug connection board 115, the plug partition 114, and the line card board 112 can be conductive metal parts.

[0048] See also Figure 3 , Figure 5 and Figure 7 , the line card board 112 is provided with a threading hole 113 for the transmission cable 300 to pass through. Specifically, the threading hole 113 is connected to the independent space 116 accommodating the conductive member 111, and the signal line 310 of the transmission cable 300 is connected to the conductive member 111 through the threading hole 113. It should be noted that the transmission cable 300 of the embodiment of the present invention is a high-frequency cable supporting high-speed differential signals. Two signal lines 310 as a set of differential line pairs are provided in the transmission cable 300, and the contacts in the circuit board 200 are correspondingly arranged so that each differential pair is spaced apart from each GND segment (see Figure 6 ), the circuit board 200 is connected to one end of the two conductive members 111 as two contacts of the differential pair, and the other ends of the two conductive members 111 are connected to the two signal lines 310 in the transmission cable 300.

[0049] See also Figures 1 to 9 In the welding method of the electrical connector 100 of the technical solution of the present invention, the electrical connector 100 includes a wire card board 112 and a circuit board 200, and a plurality of conductive members 111 for connecting the circuit board 200 and the transmission cable 300. The wire card board 112 is provided with a threading hole 113 that allows the transmission cable 300 to pass through and connect with the conductive member 111. The welding method of the electrical connector 100 of the technical solution of the present invention at least includes the following steps:

[0050] S100, after obtaining a set amount of tin block 400 and melting it, attach the tin block 400 to a set position of each of the conductive members 111 or each of the signal lines 310 to form a solder joint; it is understandable that the formed solder joint may be single or multiple.

[0051] S200, passing the signal line 310 through the threading hole 113, so that each of the soldering points is in contact with the corresponding signal line 310 or the conductive member 111;

[0052] S300 , synchronously heating all the solder joints to connect each of the signal lines 310 to its corresponding conductive member 111 .

[0053] In some embodiments, the set amount of the tin block 400 is determined according to the specifications of the parts to be pre-tinned, for example, according to the thickness of the signal line 310 in the transmission cable 300 and / or according to the length of the welding part of the transmission cable 300, the set amount of the tin block 400 is determined, and the raw material tin bar is processed into the required size. It should be noted that the method of the present invention is based on the structure and / or area of ​​the welding parts of both the transmission cable and the electrical connector, and also includes determining the set amount of the tin block 400 according to the structure of the conductive part 111 and / or according to the plastic structure around the welding area. The processed tin block 400 can be a solidified tin sheet or tin ball, or it can be a solder paste, and then the tin block 400 is partially melted or completely melted by adding to adhere to the conductive part 111 (i.e., the terminal) or the transmission cable 300. It should be noted that the shapes of the conductive part 111 or the transmission cable 300 used to attach the tin block 400 can be various shapes such as cylinder, rectangle or disk. The welding method of the embodiment of the present invention can be applied to parts of various shapes for attaching the tin block 400.

[0054] In some embodiments, the welding method of the embodiment of the present invention adopts a pre-tinning method, and the size, quantity and attachment position of the tin block 400 can be adjusted according to the requirements of the welding position. For example, according to the thickness of the transmission cable 300, by controlling the size of the tin block 400, the diameter of the solder joint formed by the attachment matches the diameter of the transmission cable 300. For another example, according to the overlap position required for welding the transmission cable 300 and the conductive member 111, such as the overlap length, etc., the attachment point of the tin block 400 is controlled to improve the matching strength of the electrical connector 100 and the transmission cable 300 after welding. It can be understood that the best position of the attachment point of the tin block 400, that is, the solder joint, is the middle position of the overlap area of ​​the conductive member 111 and the signal line 310. After the tin block 400 in the middle position is heated and melted, it diffuses from the middle to both sides, which is conducive to ensuring the uniformity of the distribution of the tin block 400 in the welding structure and improving the matching strength of the conductive member 111 and the signal line 310 after welding. It can be understood that the attachment position of the solder joint can be determined by visual positioning. For another example, the number of tin blocks 400 is determined according to the number of connections between the conductive parts 111 and the signal lines 310, that is, each conductive part 111 or each signal line 310 to be welded is pre-tinned and then welded synchronously, so that the processing of multiple welding positions can be completed at one time, thereby improving the processing efficiency.

[0055] See also Figures 1 to 9The welding device of the electrical connector 100 of the technical solution of the present invention is applied to the welding method of the electrical connector 100 of the above-mentioned embodiment of the present invention, and the welding device includes a ball-distributing device for obtaining a set amount of tin block 400, a laser nozzle and a pneumatic spray gun for spraying the tin block 400, and a welding installation accessory 500 for synchronously heating all solder joints. Specifically, after the tin block 400 is processed into a required size according to the set amount, a single or multiple tin blocks 400 are dropped into the guide channel by a high-precision ball-distributing device, and the tin block 400 is finally stopped at the bottom of the laser nozzle. After the tin block 400 is melted by laser heating, the melted tin block 400 is sprayed onto the surface of the soldering head (such as the conductive member 111 or the signal line 310) by the pneumatic spray gun, and the tin block 400 is attached to the solder body to form a new solder joint.

[0056] It is understandable that the temperature during laser welding can be controlled by controlling parameters such as the diameter, energy power and heating time of the laser, so that the tin block 400 can be in different states such as semi-melted or fully melted. Further, the method of the present invention can use a nitrogen pressure spray gun, and wrap the tin block 400 with nitrogen, which is conducive to preventing the high-temperature tin block 400 from oxidizing in the air. Further, the air pressure of the air pressure spray gun can be adjusted according to demand, for example, the nitrogen pressure is set to 1.3-1.5MPa.

[0057] In some embodiments, see Figure 3 and Figure 7 In the electrical connector 100 of the embodiment of the present invention, the line card board 112 and the plug partition board 114 are plugged, the line card board 112 is located on the upper side of the plug partition board 114, and the plug partition boards 114 are arranged on both sides of each threading hole 113, see Figures 1 to 3 The signal line 310 of the transmission cable 300 needs to pass through the threading hole 113 from above and connect to the conductive member 111 inside the electrical connector 100, that is, the connection position between the conductive member 111 and the signal line 310 is between the two plug partitions 114, see Figures 7 to 9 The HotBar head enters from the side of the plug partition 114 to contact and heat the connection position between the conductive part 111 and the signal line 310 inside. The welding method of the present invention adopts a pre-tinning process to solve the problem of difficulty in controlling the position of the solder joint and the difficulty in controlling the amount and shape of the solder joint formed by attachment, simplifies the welding process and improves the welding stability, thereby improving the product yield.

[0058] In some embodiments, see Fig. 9The designed welding installation accessory 500 is used as a welding head, and the welding installation accessory 500 is provided with a plurality of fixed recesses 510, and the contact point between the signal line 310 and the conductive member 111 can be embedded in the fixed recesses 510, so that a plurality of signal lines 310 and the conductive member 111 can be welded at one time. Furthermore, the welding installation accessory 500 is provided with a groove 520, and one side of the plug partition 114 can be embedded in the groove 520.

[0059] Specifically, a set amount of tin block 400 is attached to the set position of the conductive part 111 or the signal line 310 through the cooperation of a laser nozzle and a pneumatic spray gun, and then each transmission cable 300 is inserted into the corresponding threading hole 113 so that each signal line 310 contacts its corresponding conductive part 111. Then, the welding installation accessory 500 is inserted from the side of the electrical connector 100, and after the plug partition 114 enters the groove 520, the connection position between the conductive part 111 and the signal line 310 enters the fixed recess 510. The welding installation accessory 500 is powered on and heated to melt the tin block 400 at the connection position, thereby realizing the connection between the conductive part 111 and the signal line 310.

[0060] See also Fig.10 According to the impedance difference comparison diagram of different tin amounts in the welding area (the red dotted box position in the figure), it can be obtained that the metal structure of the welding area is different, and its characteristic impedance (i.e., TDR impedance) is quite different, which has different effects on the electrical performance. It should be noted that the metal structure of the welding area refers to the metal structure formed by the melting of the tin block 400 at the welding point between the electrical connector 100 and the transmission cable 300. For example, after the tin block 400 at the welding point between the conductive part 111 and the signal line 310 is melted and diffused to complete the connection, the welding area composed of the conductive part 111, the signal line 310 and the melted tin block 400 is the above-mentioned metal structure of the welding area.

[0061] The above is only a preferred embodiment of the present invention. The present invention is not limited to the above implementation. As long as the technical effect of the present invention is achieved by the same means, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the scope of protection of the present disclosure. All should belong to the protection scope of the present invention. Within the protection scope of the present invention, its technical scheme and / or implementation method can have various modifications and changes.

Claims

1. A welding method for an electrical connector (100), characterized in that: The electrical connector (100) comprises a line card (112) and a circuit board (200), and a plurality of conductive members (111) for connecting the circuit board (200) and a transmission cable (300); the line card (112) is provided with a threading hole (113) for allowing the transmission cable (300) to pass through so as to be connected to the conductive member (111); The welding method of the electrical connector (100) is applied to connect the conductive member (111) with the signal line (310) of the transmission cable (300), and the welding method comprises the following steps: S100, obtaining a set amount of tin block (400) and melting it, and then attaching the tin block (400) to a set position of each of the conductive members (111) or each of the signal lines (310) to form a solder joint; S200, passing the signal line (310) through the threading hole (113), so that each of the soldering points is in contact with the corresponding signal line (310) or the conductive member (111); S300: Synchronously heat all the solder joints to connect each of the signal lines (310) to its corresponding conductive member (111).

2. The welding method of the electrical connector (100) according to claim 1, characterized in that: In the step S100, the set amount of the solder block (400) is determined according to the thickness value of the transmission cable (300) and / or the length value of the welding position.

3. The welding method of the electrical connector (100) according to claim 1, characterized in that: In the step S100, the attachment point of the solder block (400) is determined according to the overlapping position of the conductive member (111) and the signal line (310).

4. The welding method of the electrical connector (100) according to claim 3, characterized in that: The attachment point is the middle of the overlapping position of the conductive member (111) and the signal line (310).

5. The welding method of the electrical connector (100) according to claim 1, characterized in that: The tin block (400) is a tin sheet, a tin ball or a tin paste.

6. The welding method of the electrical connector (100) according to claim 1, characterized in that: In the step S100, the tin block (400) is heated to a semi-molten state or a fully molten state.

7. The welding method of the electrical connector (100) according to claim 1, characterized in that: In the step S100, the number of solder joints is determined according to the number of connections between the conductive member (111) and the signal line (310).

8. A welding device for an electrical connector (100), applied to the welding method for the electrical connector (100) according to any one of claims 1 to 7, characterized in that: It comprises a ball distributing device for obtaining a set amount of tin block (400), a laser nozzle and a pneumatic spray gun for spraying the tin block (400), and a welding installation accessory (500) for synchronously heating all welding points.

9. The welding device of the electrical connector (100) according to claim 8, characterized in that: The welding installation accessory (500) is provided with a fixing recess (510), and the contact point between the signal line (310) and the conductive member (111) can be embedded in the fixing recess (510).

10. A welding method for an electrical connector (100), characterized in that: The welding method is used to connect the plug assembly (110) of the electrical connector (100) and the transmission cable (300), and comprises the following steps: A100, obtaining a set amount of tin block (400) and melting it, and then attaching the tin block (400) to a set position of each of the plug assemblies (110) or each of the transmission cables (300) to form a solder joint; A200, making each of the welding points contact with the corresponding transmission cable (300) or the plug assembly (110); A300. All the solder joints are heated synchronously by a HotBar head to connect the plug assembly (110) to the transmission cable (300).

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