Search

CN-121976025-A - Special welding strip annealing device for light TPcon

CN121976025ACN 121976025 ACN121976025 ACN 121976025ACN-121976025-A

Abstract

The invention relates to a lightweight TPcon special welding strip annealing device, which comprises a box body and a cooling water tank fixed on the surface of the box body, wherein an upper annealing wheel, a passing wheel and a passive wire passing wheel are rotatably arranged on the surface of the box body, and the passive wire passing wheel is positioned in an inner cavity of the cooling water tank. This special welding strip annealing device of lightweight TPcon has set up the dynamic labyrinth seal structure that comprises fluororubber seal cover, adjustable fly leaf, division board to combine together with gas receiver buffering air supplementing system, this structure has formed multiple tortuous gas leakage route under the prerequisite that the welding strip passed in succession, has greatly increased the gas and has leaked resistance, cooperates the micro-positive pressure environment that the gas receiver maintained, has realized "supplementing as required", makes most nitrogen gas sealed at the inside cyclic utilization of system, only need to supplement very little leakage volume, compares traditional continuous sweeping mode, can practice thrift more than 90% nitrogen gas consumption, has significantly reduced manufacturing cost.

Inventors

  • XU ZAN
  • XU JINSONG
  • LI YUZHU
  • BAI LINGKE

Assignees

  • 太仓巨仁光伏材料有限公司

Dates

Publication Date
20260505
Application Date
20251231

Claims (8)

  1. 1. The special welding belt annealing device for the light TPcon comprises a box body (1) and a cooling water tank (20) fixed on the surface of the box body (1), wherein an upper annealing wheel (2), a passing wheel (3) and a passive wire passing wheel (5) are rotatably arranged on the surface of the box body (1), and the passive wire passing wheel (5) is positioned in an inner cavity of the cooling water tank (20), and is characterized in that an oxidation prevention mechanism for protecting a welding belt is arranged on the surface of the box body (1); The anti-oxidation mechanism comprises a glass tube (4) fixed on the surface of the box body (1), a sleeve (6) connected to the top end of the glass tube (4) and a gas storage tank (9) fixed on the surface of the box body (1), wherein the tail end of the glass tube (4) extends to the inner cavity of the cooling water tank (20), a connecting ring (7) is fixed at the top of the sleeve (6), a fluororubber sealing sleeve (19) is fixed in the inner cavity of the connecting ring (7), and a through hole smaller than the diameter of a welding belt is formed in the center of the fluororubber sealing sleeve (19); The inner cavity of the sleeve (6) is fixedly connected with two separation plates (13), a space between the two separation plates (13) of the sleeve (6) is connected with a movable plate (16) driven by a driving mechanism through an elastic connecting belt (15), central holes (14) for penetrating through welding belts are formed in the centers of the two separation plates (13) and the movable plate (16), and two small air chambers (17) are partitioned between the two separation plates (13) and the movable plate (16); The bottom of gas receiver (9) is located the inner chamber intercommunication of division board (13) below through communicating tube (12) and sleeve (6), gas receiver (9) are through admission line (10) and nitrogen source intercommunication, the fixed surface of go-between (7) is connected with and blows ring (8), it is through reposition of redundant personnel pipeline (11) and admission line (10) intercommunication to blow ring (8).
  2. 2. The lightweight TPcon special-purpose welding belt annealing device as claimed in claim 1, wherein the surface of the fluororubber sealing sleeve (19) is braided with reinforcing wires.
  3. 3. The welding belt annealing device special for light TPcon according to claim 1, wherein the driving mechanism comprises a connecting rod (18) which is slidingly connected in the inner cavity of the glass tube (4), one end of the connecting rod (18) is fixedly connected with the bottom of the movable plate (16), and the connecting rod (18) is driven by an air cylinder.
  4. 4. The welding belt annealing device special for light TPcon of claim 1, wherein guide wheels connected with a welding belt in a transmission mode are rotatably connected to two sides of an inner cavity of a central hole (14) in an inner cavity of the movable plate (16).
  5. 5. The welding strip annealing device special for light TPcon of claim 1, wherein the inner cavity of the cooling water tank (20) floats with a floating plate (21), an empty groove matched with the glass tube (4) is formed in the inner cavity of the floating plate (21), and a plurality of grids are formed on the surface of the floating plate (21).
  6. 6. The welding strip annealing device special for light TPcon of claim 1, wherein a plurality of turbulence bars (22) are fixedly connected to the inner cavity of the cooling water tank (20).
  7. 7. The light-weight TPcon special welding strip annealing device according to claim 1, wherein the welding strip is sequentially driven along an upper annealing wheel (2), a passing wheel (3) and a passive passing wheel (5) and penetrates through a cooling water tank (20).
  8. 8. The welding belt annealing device special for light TPcon, according to claim 1, wherein the upper annealing wheel (2) is an anode, and the saline solution in the inner cavity of the cooling water tank (20) is a cathode.

Description

Special welding strip annealing device for light TPcon Technical Field The invention relates to the technical field of welding strip annealing, in particular to a lightweight TPcon special welding strip annealing device. Background After cold working such as calendaring, the photovoltaic solder strip is subjected to stress and hardening within the material. In order to meet the requirements of the subsequent tinning process, annealing treatment is necessary to eliminate stress and reduce strength. The current resistance annealing mode is that the welding strip bypasses an upper annealing wheel serving as an anode, then passes through a series of guide wheels, is immersed into a cooling water tank to serve as a lower annealing wheel of a cathode, and is heated by current. However, this approach has significant drawbacks in achieving inert gas shielding to prevent high temperature oxidation of the solder strip. It is common practice to continuously introduce a significant amount of nitrogen into the chamber in which the annealing zone is located. The method has huge nitrogen consumption and high operation cost. The main reason is that the welding strip needs to continuously enter and exit the protection cavity, and the moving sealing problem that the sealing is difficult exists at the entrance and exit of the welding strip. To ensure the purity of the atmosphere in the chamber, a large flow of nitrogen has to be "purged" to expel the air that may penetrate, which results in a significant waste of inert gas. On the premise of not influencing the continuous passing of the welding strip, the high-temperature annealing zone is effectively protected by gas, and the consumption of the protecting gas is greatly reduced, so that the method is a technical problem to be solved in the field. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a lightweight TPcon special welding belt annealing device, which solves the problems. The light-weight TPcon special welding belt annealing device comprises a box body and a cooling water tank fixed on the surface of the box body, wherein an upper annealing wheel, a passing wheel and a passive wire passing wheel are rotatably arranged on the surface of the box body, the passive wire passing wheel is positioned in an inner cavity of the cooling water tank, and an anti-oxidation mechanism for protecting a welding belt is arranged on the surface of the box body; The anti-oxidation mechanism comprises a glass tube fixed on the surface of the box body, a sleeve connected to the top end of the glass tube and a gas storage box fixed on the surface of the box body, wherein the tail end of the glass tube extends to the inner cavity of the cooling water tank, a connecting ring is fixed at the top of the sleeve, a fluororubber sealing sleeve is fixed in the inner cavity of the connecting ring, and a through hole smaller than the diameter of a welding strip is formed in the center of the fluororubber sealing sleeve; The inner cavity of the sleeve is fixedly connected with two partition plates, a space between the two partition plates of the sleeve is connected with a movable plate driven by a driving mechanism through an elastic connecting belt, central holes for penetration of welding belts are formed in the centers of the two partition plates and the movable plate, and two small air chambers are partitioned between the two partition plates and the movable plate; The bottom of gas receiver is located the inner chamber intercommunication of division board below through communicating tube and sleeve, the gas receiver passes through air inlet duct and nitrogen source intercommunication, the fixed surface of go-between is connected with the ring of blowing, the ring of blowing passes through shunt tubes and air inlet duct intercommunication, weld the area and get into from telescopic upper end when using, through dynamic seal structure, then get into the glass pipe perpendicularly downwards, get into cooling water tank from the glass pipe lower extreme again, nitrogen gas is let in from the communicating tube of side, because the existence of gas receiver dynamic seal, most nitrogen gas can be full of the glass pipe downwards, a small amount can leak from the upper end, through dynamic seal and pressure-reducing environment, the gas receiver passes through relief pressure valve and is connected with communicating tube, nitrogen gas in the gas receiver gets into when the internal gas pressure of glass pipe reduces, buffer system maintains the pressure-reducing and leaks, thereby only need supplement few nitrogen gas can greatly reduce nitrogen gas leakage. As a further scheme of the invention, the surface of the fluororubber sealing sleeve is braided with the reinforcing wire, and the strength of the fluororubber sealing sleeve is reinforced by the hard rubber reinforcing wire. The driving mechanism comprises a connecting rod which is connected with the inner cav