Carbon fiber heating wire and processing technology

Abstract

The present invention discloses a carbon fiber heating wire, including a carbon fiber heating wire harness and a metal wire, wherein one end of the carbon fiber heating wire harness and one end of the metal wire are provided with a connector, wherein the connector is used to connect the carbon fiber heating wire harness with the metal wire, and the connector includes a metal wire terminal wound in a spiral shape, and a solder layer is provided at the connection between the carbon fiber heating wire harness and the metal wire terminal, so as to achieve the effect of increasing the connection strength between the carbon fiber heating wire harness and the solder layer. The present invention also provides a processing technology for the carbon fiber heating wire harness, so as to achieve the effect of increasing the connection strength and tightness between the carbon fiber heating wire harness and the metal wire terminal.

Description

Technical Field

[0001] The invention relates to the technical field of electrical connection, and in particular to a carbon fiber heating wire and a processing technology thereof. Background Art

[0002] Carbon fiber is a fibrous carbon material. Carbon fiber has good electrical, thermal and mechanical properties. Carbon fiber is widely used in electronic and electrical products with heating functions, such as electric blankets, electric knee pads and other flexible heaters.

[0003] A plurality of carbon fibers can be prepared into a carbon fiber bundle. In the existing technology, the connection between the carbon fiber bundle and the metal wire is generally connected by copper strip riveting. This connection method is prone to stress concentration at the contact point between the connection point and the carbon fiber bundle. Since the carbon fiber bundle is composed of a plurality of carbon fiber filaments, each carbon fiber filament has low strength and is very easy to be broken at the connection between the carbon fiber bundle and the metal wire. Therefore, it is easy to cause circuit failure at the connection, and the electric heating product cannot work normally, which affects the service life of the electric heating product. Summary of the invention

[0004] The first object of the present invention is to provide a carbon fiber heating wire, which has the effect of tightly connecting the carbon fiber heating wire bundle with the metal wire.

[0005] A carbon fiber heating wire comprises a carbon fiber heating wire bundle and a metal wire, wherein one end of the carbon fiber heating wire bundle and one end of the metal wire are provided with a connector; the connector comprises a metal wire terminal extending from the end of the metal wire, and the metal wire terminal is wound in a spiral shape; the carbon fiber heating wire bundle is located in the middle of the metal wire terminal; a solder layer is provided at the connection between the metal wire terminal and the carbon fiber heating wire bundle.

[0006] By adopting the above technical scheme, the contact area between the metal wire terminal and the carbon fiber heating harness can be increased by winding the metal wire terminal in a spiral shape; by providing a solder layer, the solder layer can increase the contact area between the metal wire terminal and the carbon fiber heating harness on the one hand, and on the other hand, can further increase the connection strength of the carbon fiber heating harness; when power is turned on, the current can smoothly reach the connection point of the carbon fiber heating harness and the carbon fiber heating harness from the metal wire to generate heat.

[0007] The present invention is further configured as follows: an insulating component is arranged outside the connecting piece; the insulating component includes a first insulating layer arranged on the carbon fiber heating wire harness and a second insulating layer arranged on the metal wire, and a protective component for protecting the connecting piece is arranged on the first insulating layer and the second insulating layer.

[0008] By setting the first insulating layer, the second insulating layer and the protective component, the carbon fiber heating harness, the metal wire and the connection between the metal wire terminal and the carbon fiber heating harness can be protected respectively, so as to effectively ensure the safety of use and achieve the purpose of enhancing the service life of the metal wire and the carbon fiber heating harness.

[0009] The present invention is further configured as follows: the protective component includes a first locking sleeve slidably sleeved on the first insulating layer and a second locking sleeve slidably sleeved on the second insulating layer, one end of the first locking sleeve and the second locking sleeve form an accommodating space for accommodating the connection between the metal wire terminal and the carbon fiber heating harness, and a fixing component is arranged on the first locking sleeve and the second locking sleeve.

[0010] By adopting the above technical solution, by setting a first locking sleeve, a second locking sleeve and a fixing assembly, the first locking sleeve and the second locking sleeve are placed opposite to each other during use, so that the connection between the metal wire terminal and the carbon fiber heating harness can be accommodated in the accommodating space for protection; when maintenance is required, the fixing assembly can be unlocked to perform maintenance on the connection between the metal wire terminal and the carbon fiber heating harness.

[0011] The present invention is further configured as follows: the fixing assembly includes an extension hook circumferentially arranged at the end of the first locking sleeve, and the inner wall of the second locking sleeve is provided with a mounting groove for the extension hook to slide to achieve fastening, and the mounting groove is L-shaped; a locking protrusion is provided on the groove wall of the mounting groove, and the locking protrusion is located in the middle of the mounting groove.

[0012] By adopting the above technical scheme, an extension hook and an L-shaped installation groove are set. When in use, the extension hook is inserted into the installation groove by controlling the first locking sleeve. When it reaches the bottom of the installation groove, the first locking sleeve is rotated to fix the first locking sleeve and the second locking sleeve, that is, the connection between the metal wire terminal and the carbon fiber heating harness is surrounded and protected; when a fault occurs at the connection between the metal wire terminal and the carbon fiber heating harness, the first locking sleeve can be rotated in the reverse direction and pulled away from the second locking sleeve, so that the connection between the metal wire terminal and the carbon fiber heating harness is exposed, which is convenient for maintenance personnel. After the maintenance is completed, the first locking sleeve and the second locking sleeve can be re-connected to the connection between the carbon fiber heating harness and the metal wire terminal. Through this arrangement, the first locking sleeve and the second locking sleeve can be detachable and reused.

[0013] By providing the locking protrusion, the locking protrusion can lock the extension hook in place during use, thereby further increasing the connection stability of the first locking sleeve and the second locking sleeve.

[0014] The second purpose of the present invention is to provide a processing technology for carbon fiber heating wires, which has the effect of enhancing the connection strength and tightness between the carbon fiber heating wire bundle and the metal wire terminal.

[0015] A processing technology of carbon fiber heating wire is operated according to the following steps:

[0016] S11. Positioning the carbon fiber heating harness: contacting the end of the carbon fiber heating harness with the metal wire terminal in the same direction or in the opposite direction and positioning them;

[0017] S12, connecting the metal wire terminal: spirally wrapping the metal wire terminal around the outer periphery of the end of the carbon fiber heating wire harness;

[0018] S13, reinforcing the carbon fiber heating wire harness and the metal wire terminal: heating to make the tin molten, so that the molten tin drips and wraps around the connection between the metal wire terminal and the carbon fiber heating wire harness;

[0019] S14, cool the welded metal wire and carbon fiber heating harness for 1-5 seconds, then the temperature of the connection between the metal wire terminal and the carbon fiber heating harness is 100-150℃, apply 2-6kg·f / cm 2 The pressure is on the connection between the metal wire terminal and the carbon fiber heating harness, and the tin is completely cooled to form a solder layer.

[0020] By adopting the above technical scheme, the metal wire terminal is positioned in the same direction or opposite direction, and the metal wire terminal is wound around the end of the carbon fiber heating harness. After winding, a hot-melt tin rod is used to drip and wrap the tin around the connection between the metal wire terminal and the carbon fiber heating harness, and then slightly cooled and hot pressed. On the one hand, it can ensure that the carbon fiber harness is not broken, and on the other hand, the metal wire terminal is tightly connected to the carbon fiber heating harness.

[0021] A processing technology for a carbon fiber heating wire also includes the following process steps:

[0022] S21, pretreatment of carbon fiber heating wire harness: placing the carbon fiber heating wire harness in a copper-containing electroplating solution with a pH value of 8-9 for plating, the plating time is 1-2 hours, and the thickness of the plating is 1-2 um;

[0023] S22, installation of insulation components: extruding and coating the first insulation layer and the second insulation layer on the carbon fiber heating wire harness and the metal wire, and sleeved the first locking sleeve and the second locking sleeve on the carbon fiber heating wire harness and the metal wire.

[0024] Since the carbon fiber heating wire harness is non-metallic and the solder layer is metal, the solder layer cannot be directly welded on the carbon fiber wire. By plating the carbon fiber wire, copper can be attached to the surface of the carbon fiber heating wire harness, thereby enhancing the bonding force between the solder layer and the carbon fiber heating wire harness. The plated carbon fiber heating wire and metal wire are extruded and coated with the first insulating layer and the second insulating layer, and the first insulating layer and the second insulating layer can protect the carbon fiber heating wire harness and the metal wire.

[0025] The present invention is further configured as follows: the electroplating solution includes the following substances in mass concentrations: 20-35 g / L copper pyrophosphate, 100-150 g / L potassium pyrophosphate, 15-20 g / L potassium sodium tartrate, and 2-3 g / L sodium hydroxide.

[0026] By adopting the above technical scheme, an electroplating solution is prepared by using copper pyrophosphate, potassium pyrophosphate, potassium sodium tartrate and sodium hydroxide, wherein copper pyrophosphate is used as the main salt to provide copper ions for the electroplating solution; by adding potassium pyrophosphate, potassium pyrophosphate can be used as an emulsifier to make copper pyrophosphate uniformly dispersed in the electroplating solution and stabilize the electroplating solution system; by using potassium sodium tartrate, potassium sodium tartrate can be used as a complexing agent to react and complex with copper pyrophosphate; and sodium hydroxide is added to the electroplating solution. On the one hand, sodium hydroxide can adjust the electroplating solution so that the pH of the electroplating solution is within the range of 8-9, and on the other hand, sodium hydroxide has the effect of chemical degreasing and activating the surface of the carbon fiber heating wire bundle. By using this component to form an electroplating solution, electroplating can be effectively carried out to improve the bonding effect between the carbon fiber heating wire bundle and the metal wire.

[0027] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0028] (1) By providing a metal wire terminal and a solder layer, the carbon fiber heating wire bundle can be tightly connected to the metal wire terminal;

[0029] (2) By setting a processing technology for the carbon fiber heating harness, the connection strength and tightness between the carbon fiber heating harness and the metal wire terminal can be enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a side view of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the reverse connection of the carbon fiber filaments and the metal wire terminals of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the carbon fiber filaments and the metal wire terminals of the present invention being connected in the same direction;

[0033] Figure 4 This is a schematic structural diagram of a tin block provided at the connection between the carbon fiber filament and the metal wire terminal of the present invention;

[0034] Figure 5 It is a schematic structural diagram of the first connecting sleeve and the second connecting sleeve of the present invention.

[0035] Figure numerals: 1. Carbon fiber heating harness; 2. Metal wire; 3. Connector; 31. Metal wire terminal; 32. Solder layer; 41. First insulating layer; 42. Second insulating layer; 5. Protective component; 51. First locking sleeve; 52. Second locking sleeve; 53. Accommodating space; 6. Fixing component; 61. Extension hook; 62. Mounting groove; 63. Locking protrusion. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0037] Example 1

[0038] Reference Figure 2 and Figure 4 A carbon fiber heating wire comprises a carbon fiber heating wire harness 1 and a metal wire 2. A connector 3 is provided at one end of the carbon fiber heating wire harness 1 and one end of the metal wire 2. An insulating component is provided outside the connector 3. Specifically, the connector 3 comprises a metal wire terminal 31 extending from the end of the metal wire 2, wherein the metal wire terminal 31 can be wound and attached to the surface of the carbon fiber heating wire harness 1; specifically, the metal wire terminal 31 is wound in a spiral shape, and the carbon fiber heating wire harness 1 is fixed to the middle of the metal wire terminal 31, combined with Figure 2 The metal wire terminal 31 can be connected end to end with the carbon fiber heating wire harness 1, combined with Figure 3 The metal wire terminal 31 can be connected to the carbon fiber heating wire harness 1 in the same direction. In order to increase the contact area between the metal wire terminal 31 and the carbon fiber heating wire harness 1, a solder layer 32 is provided at the connection between the metal wire terminal 31 and the carbon fiber heating wire harness 1.

[0039] A processing technology of carbon fiber heating wire is operated according to the following steps:

[0040] S1. Positioning the carbon fiber heating harness 1: Position the end of the carbon fiber heating harness 1 in the same direction as the metal wire terminal 31 (refer to Figure 3 ) contact or reverse (refer to Figure 2 ) contact and position.

[0041] S2. Connection of the metal wire terminal 31: spirally wrap the metal wire terminal 31 at the end of the metal wire 2 around the outer periphery of the end of the plated carbon fiber heating harness 1.

[0042] S3, reinforcing the metal wire terminal 31 and the carbon fiber heating harness 1: heating the solder layer 32 to be in a molten state, so that the molten tin drips and wraps around the connection between the metal wire terminal 31 and the carbon fiber heating harness.

[0043] S4, hot pressing of the metal wire terminal 31 and the carbon fiber heating harness 1: the welded metal wire 2 and the carbon fiber heating harness are naturally cooled for 1-5 seconds, and the temperature at the connection between the metal wire terminal 31 and the carbon fiber heating harness 1 is 100-150°C, and 2-6kg·f / cm 2 The pressure is at the connection between the metal wire terminal 31 and the carbon fiber heating wire harness 1, and hot pressing can ensure that the carbon fiber wire harness is not easily broken and improve the tight connection effect between the carbon fiber wire harness and the metal wire terminal.

[0044] Example 2

[0045] Reference Figure 2 and Figure 4 A carbon fiber heating wire comprises a carbon fiber heating wire harness 1 and a metal wire 2. A connector 3 is provided at one end of the carbon fiber heating wire harness 1 and one end of the metal wire 2. An insulating component is provided outside the connector 3. Specifically, the connector 3 comprises a metal wire terminal 31 extending from the end of the metal wire 2, wherein the metal wire terminal 31 can be wound and attached to the surface of the carbon fiber heating wire harness 1; specifically, the metal wire terminal 31 is wound in a spiral shape, and the carbon fiber heating wire harness 1 is fixed to the middle of the metal wire terminal 31, combined with Figure 2 The metal wire terminal 31 can be connected end to end with the carbon fiber heating wire harness 1, combined with Figure 3 The metal wire terminal 31 can be connected to the carbon fiber heating wire harness 1 in the same direction. In order to increase the contact area between the metal wire terminal 31 and the carbon fiber heating wire harness 1, a solder layer 32 is provided at the connection between the metal wire terminal 31 and the carbon fiber heating wire harness 1.

[0046] Reference Figure 1 and Figure 4 The insulating component includes a first insulating layer 41 disposed on the carbon fiber heating wire harness 1 and a second insulating layer 42 disposed on the metal wire 2. Figure 5A protection component 5 for protecting the connector 3 is provided between the first insulating layer 41 and the second insulating layer 42. The protection component 5 includes a first locking sleeve 51 and a second locking sleeve 52, wherein the cross-sections of the first locking sleeve 51 and the second locking sleeve 52 are stepped, the first locking sleeve 51 and the second locking sleeve 52 are made of insulating plastic, the first locking sleeve 51 and the second locking sleeve 52 can be slidably sleeved on the first insulating layer 41 and the second insulating layer 42, the larger ends of the first locking sleeve 51 and the second locking sleeve 52 can form an accommodating space 53 for accommodating the connection between the metal wire terminal 31 and the carbon fiber heating harness 1, and a fixing component 6 is provided on the first locking sleeve 51 and the second locking sleeve 52. The fixing assembly 6 includes an extension hook 61 circumferentially arranged at the end of the first locking sleeve 51, and a mounting groove 62 for the extension hook 61 to slide to achieve fastening is arranged on the inner wall of the second locking sleeve 52, wherein the mounting groove 62 is L-shaped, and in the present application, four extension hooks 61 and four mounting grooves 62 are arranged. A locking protrusion 63 is arranged on the groove wall of the mounting groove 62, wherein the locking protrusion 63 is located in the middle of the mounting groove 62, and the locking protrusion 63 is in the shape of a rectangular parallelepiped, and a guiding inclined surface is arranged on the long side of the locking protrusion 63, and the locking protrusion 63 can ensure that the mounting hook is fixed on the mounting groove 62 under the action of the locking protrusion 63, and by setting the guiding inclined surface, the effect of the mounting hook and the mounting groove 62 being matched and fixed or the mounting hook being separated from the mounting groove 62 can be facilitated.

[0047] Working process: Move the first locking sleeve 51 and the second locking sleeve 52 toward the connection between the carbon fiber heating harness 1 and the metal wire terminal 31, and make the mounting hook and the mounting groove 62 face each other. When reaching the middle of the mounting groove 62, keep the first locking sleeve 51 stationary and rotate the second locking sleeve 52 forward, so that the first mounting hook passes through the locking protrusion 63 to lock the mounting hook in the mounting groove 62.

[0048] When the carbon fiber heating harness 1 and the metal wire terminal 31 need to be inspected, the first locking sleeve 51 is kept stationary, and the second locking sleeve 52 is rotated in the opposite direction and moved away from the first locking sleeve 51. Then, the connection between the carbon fiber heating harness 1 and the metal wire terminal 31 is exposed and can be inspected.

[0049] A processing technology of carbon fiber heating wire is operated according to the following steps:

[0050] S1. Installation of insulation components: Extrusion-coat the first insulation layer 41 and the second insulation layer 42 on the carbon fiber heating harness 1 and the metal wire, and sleeve the first locking sleeve 51 and the second locking sleeve 52 on the carbon fiber heating harness 1 and the metal wire.

[0051] S2, positioning the carbon fiber heating harness 1: align the end of the carbon fiber heating harness 1 with the metal wire terminal 31 (refer to Figure 3 ) contact or reverse (refer to Figure 2 ) contact and position.

[0052] S3. Connection of the metal wire terminal 31: spirally wrap the metal wire terminal 31 at the end of the metal wire 2 around the outer periphery of the end of the plated carbon fiber heating harness 1.

[0053] S4, reinforcing the metal wire terminal 31 and the carbon fiber heating harness 1: heating the solder layer 32 to be in a molten state, so that the molten tin drips and wraps around the connection between the metal wire terminal 31 and the carbon fiber heating harness.

[0054] S5. Hot pressing of the metal wire terminal 31 and the carbon fiber heating harness 1: The welded metal wire 2 and the carbon fiber heating harness are naturally cooled for 1-5 seconds, and the temperature at the connection between the metal wire terminal 31 and the carbon fiber heating harness 1 is 100-150°C. Apply 2-6kg·f / cm 2 The pressure is at the connection between the metal wire terminal 31 and the carbon fiber heating wire harness 1; hot pressing can ensure that the carbon fiber wire harness is not easily broken and improve the tight connection effect between the carbon fiber wire harness and the metal wire terminal.

[0055] Example 3

[0056] Reference Figure 2 and Figure 4 A carbon fiber heating wire comprises a carbon fiber heating wire harness 1 and a metal wire 2. A connector 3 is provided at one end of the carbon fiber heating wire harness 1 and one end of the metal wire 2. An insulating component is provided outside the connector 3. Specifically, the connector 3 comprises a metal wire terminal 31 extending from the end of the metal wire 2, wherein the metal wire terminal 31 can be wound and attached to the surface of the carbon fiber heating wire harness 1; specifically, the metal wire terminal 31 is wound in a spiral shape, and the carbon fiber heating wire harness 1 is fixed to the middle of the metal wire terminal 31, combined with Figure 2 The metal wire terminal 31 can be connected end to end with the carbon fiber heating wire harness 1, combined with Figure 3 The metal wire terminal 31 can be connected to the carbon fiber heating wire harness 1 in the same direction. In order to increase the contact area between the metal wire terminal 31 and the carbon fiber heating wire harness 1, a solder layer 32 is provided at the connection between the metal wire terminal 31 and the carbon fiber heating wire harness 1.

[0057] Reference Figure 1 and Figure 4 The insulating component includes a first insulating layer 41 disposed on the carbon fiber heating wire harness 1 and a second insulating layer 42 disposed on the metal wire 2. Figure 5A protection component 5 for protecting the connector 3 is provided between the first insulating layer 41 and the second insulating layer 42. The protection component 5 includes a first locking sleeve 51 and a second locking sleeve 52, wherein the cross-sections of the first locking sleeve 51 and the second locking sleeve 52 are stepped, the first locking sleeve 51 and the second locking sleeve 52 are made of insulating plastic, the first locking sleeve 51 and the second locking sleeve 52 can be slidably sleeved on the first insulating layer 41 and the second insulating layer 42, the larger ends of the first locking sleeve 51 and the second locking sleeve 52 can form an accommodating space 53 for accommodating the connection between the metal wire terminal 31 and the carbon fiber heating harness 1, and a fixing component 6 is provided on the first locking sleeve 51 and the second locking sleeve 52. The fixing assembly 6 includes an extension hook 61 circumferentially arranged at the end of the first locking sleeve 51, and a mounting groove 62 for the extension hook 61 to slide to achieve fastening is arranged on the inner wall of the second locking sleeve 52, wherein the mounting groove 62 is L-shaped, and in the present application, four extension hooks 61 and four mounting grooves 62 are arranged. A locking protrusion 63 is arranged on the groove wall of the mounting groove 62, wherein the locking protrusion 63 is located in the middle of the mounting groove 62, and the locking protrusion 63 is in the shape of a rectangular parallelepiped, and a guiding inclined surface is arranged on the long side of the locking protrusion 63, and the locking protrusion 63 can ensure that the mounting hook is fixed on the mounting groove 62 under the action of the locking protrusion 63, and by setting the guiding inclined surface, the effect of the mounting hook and the mounting groove 62 being matched and fixed or the mounting hook being separated from the mounting groove 62 can be facilitated.

[0058] Working process: Move the first locking sleeve 51 and the second locking sleeve 52 toward the connection between the carbon fiber heating harness 1 and the metal wire terminal 31, and make the mounting hook and the mounting groove 62 face each other. When reaching the middle of the mounting groove 62, keep the first locking sleeve 51 stationary and rotate the second locking sleeve 52 forward, so that the first mounting hook passes through the locking protrusion 63 to lock the mounting hook in the mounting groove 62.

[0059] When the carbon fiber heating harness 1 and the metal wire terminal 31 need to be inspected, the first locking sleeve 51 is kept stationary, and the second locking sleeve 52 is rotated in the opposite direction and moved away from the first locking sleeve 51. Then, the connection between the carbon fiber heating harness 1 and the metal wire terminal 31 is exposed and can be inspected.

[0060] A processing technology of carbon fiber heating wire is operated according to the following steps:

[0061] S1. Pretreatment of the carbon fiber heating harness 1: Place the carbon fiber heating harness 1 in a copper-containing electroplating solution with a pH of 8-9 for plating. The plating time is 1-2 hours and the thickness of the coating is 1-2um. The electroplating solution includes the following substances in mass concentrations: 20-35g / L copper pyrophosphate, 100-150g / L potassium pyrophosphate, 15-20g / L potassium sodium tartrate, and 2-3g / L sodium hydroxide.

[0062] S2. Installation of insulation components: Extrusion-coat the first insulation layer 41 and the second insulation layer 42 on the carbon fiber heating harness 1 and the metal wire, and sleeve the first locking sleeve 51 and the second locking sleeve 52 on the carbon fiber heating harness 1 and the metal wire.

[0063] S3, positioning the carbon fiber heating harness 1: align the end of the carbon fiber heating harness 1 with the metal wire terminal 31 (refer to Figure 3 ) contact or reverse (refer to Figure 2 ) contact and position.

[0064] S4. Connection of the metal wire terminal 31: spirally wrap the metal wire terminal 31 at the end of the metal wire 2 around the outer periphery of the end of the plated carbon fiber heating harness 1.

[0065] S5, reinforcing the metal wire terminal 31 and the carbon fiber heating harness 1: heating the solder layer 32 to be in a molten state, so that the molten tin drips and wraps around the connection between the metal wire terminal 31 and the carbon fiber heating harness.

[0066] S6. Hot pressing of the metal wire terminal 31 and the carbon fiber heating harness 1: The welded metal wire 2 and the carbon fiber heating harness are naturally cooled for 1-5 seconds, and the temperature at the connection between the metal wire terminal 31 and the carbon fiber heating harness 1 is 100-150°C. Apply 2-6kg·f / cm 2 The pressure is at the connection between the metal wire terminal 31 and the carbon fiber heating wire harness 1; hot pressing can ensure that the carbon fiber wire harness is not easily broken and improve the tight connection effect between the carbon fiber wire harness and the metal wire terminal.

[0067] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A carbon fiber heating wire, comprising a carbon fiber heating wire bundle (1) and a metal wire (2), characterized in that: One end of the carbon fiber heating wire bundle (1) and one end of the metal wire (2) are provided with a connector (3); the connector (3) comprises a metal wire terminal (31) extending from the end of the metal wire (2), and the metal wire terminal (31) is wound in a spiral shape; the carbon fiber heating wire bundle (1) is wound around the middle of the metal wire terminal (31); a solder layer (32) is provided at the connection between the metal wire terminal (31) and the carbon fiber heating wire bundle (1); An insulating component is arranged outside the connecting member (3); the insulating component comprises a first insulating layer (41) arranged on the carbon fiber heating wire harness (1) and a second insulating layer (42) arranged on the metal wire (2); a protective component (5) for protecting the connecting member (3) is arranged on the first insulating layer (41) and the second insulating layer (42); The protection component (5) comprises a first locking sleeve (51) slidably sleeved on the first insulating layer (41) and a second locking sleeve (52) slidably sleeved on the second insulating layer (42), one end of the first locking sleeve (51) and the second locking sleeve (52) forming an accommodation space (53) for accommodating the connection between the metal wire terminal (31) and the carbon fiber heating wire harness (1), and a fixing component (6) is arranged on the first locking sleeve (51) and the second locking sleeve (52); The fixing assembly (6) comprises an extension hook (61) circumferentially arranged at the end of the first locking sleeve (51); an installation groove (62) for the extension hook (61) to slide to achieve fastening is arranged on the inner wall of the second locking sleeve (52); the installation groove (62) is L-shaped; a locking protrusion (63) is arranged on the groove wall of the installation groove (62); the locking protrusion (63) is located in the middle of the installation groove (62).

2. The carbon fiber heating wire according to claim 1 is based on a processing technology of a carbon fiber heating wire, characterized in that Follow the steps below: S11, positioning the carbon fiber heating wire harness (1): contacting the end of the carbon fiber heating wire harness (1) with the metal wire terminal (31) in the same direction or in the opposite direction and positioning them; S12, connecting the metal wire terminal (31): spirally winding the metal wire terminal (31) around the outer periphery of the end of the carbon fiber heating wire harness (1); S13, reinforcing the connection between the carbon fiber heating wire bundle (1) and the metal wire terminal (31): heating the tin to a molten state, so that the molten tin drips and wraps around the connection between the metal wire terminal (31) and the carbon fiber heating wire bundle (1); S14, hot pressing of the metal wire terminal (31) and the carbon fiber heating harness (1): the welded metal wire terminal (31) and the carbon fiber heating harness (1) are cooled for 1-5 seconds, the temperature of the connection between the metal wire terminal (31) and the carbon fiber heating harness (1) is 100-150°C, and 2-6 kg·f / cm 2 The pressure is applied at the connection point between the metal wire terminal (31) and the carbon fiber heating wire harness (1), and the tin is completely cooled to form the solder layer (32).

3. The processing technology of a carbon fiber heating wire according to claim 2 is characterized in that The following process steps are also included: S21, pretreatment of the carbon fiber heating wire bundle (1): placing the carbon fiber heating wire bundle (1) in a copper-containing electroplating solution with a pH value of 8-9 for plating, the plating time is 1-2 hours, and the thickness of the plating is 1-2 um; S22, installing the insulating component: extruding and coating the carbon fiber heating wire harness (1) and the metal wire with a first insulating layer (41) and a second insulating layer (42), and sleeve-connecting the carbon fiber heating wire harness (1) and the metal wire with a first locking sleeve (51) and a second locking sleeve (52).

4. The processing technology of a carbon fiber heating wire according to claim 3 is characterized in that: The electroplating solution includes the following substances in mass concentrations: 20-35 g / L copper pyrophosphate, 100-150 g / L potassium pyrophosphate, 15-20 g / L potassium sodium tartrate, and 2-3 g / L sodium hydroxide.

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