Special annealing device for photovoltaic solder strip based on induction annealing principle and equipped with nitrogen protection

Abstract

The utility model relates to the field of photovoltaic solder strip production process equipment, in particular to a special annealing device for a photovoltaic solder strip based on an induction annealing principle and equipped with nitrogen protection. The problems that a short-circuit annealing mode is usually adopted in annealing of the copper wire, but the mode is prone to causing unstable yield strength of the copper wire and rising of the wire breakage rate when the superfine welding strip is processed, and the production efficiency is seriously affected are solved. The device comprises a machine table and further comprises an induction heating assembly, and when a copper wire passes through the induction heating assembly, the induction heating assembly heats the copper wire; the nitrogen protection assembly is provided with a closed annealing cavity, the annealing cavity is the annealing position of the copper wire, and the nitrogen protection assembly injects nitrogen into the annealing cavity in the annealing process of the copper wire; according to the utility model, the advanced temperature sensor and the PID controller are adopted, so that the real-time monitoring and accurate control of the heating temperature of the copper wire are realized.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic welding strip production process equipment, in particular to a photovoltaic welding strip special annealing device based on the induction annealing principle and equipped with nitrogen protection. Background Art

[0002] In the traditional photovoltaic welding ribbon production process, the annealing of copper wire usually adopts the short-circuit annealing method. However, this method can easily lead to unstable yield strength of copper wire and increased wire breakage rate when processing ultra-fine welding ribbons, which seriously affects production efficiency. Therefore, the utility model designs a new annealing device based on the induction annealing principle to solve the above problems. Utility Model Content

[0003] (1) Technical issues to be solved

[0004] In order to overcome the annealing problem of copper wire, short-circuit annealing is usually adopted. However, this method is prone to cause unstable yield strength of copper wire and increased wire breakage rate when processing ultra-fine welding strips, which seriously affects production efficiency.

[0005] (2) Technical solution

[0006] The technical solution of the utility model is: a photovoltaic welding ribbon special annealing device based on the induction annealing principle and equipped with nitrogen protection, including an organic platform, and also includes:

[0007] An induction heating assembly, wherein the induction heating assembly heats the copper wire when the copper wire passes through the induction heating assembly;

[0008] A nitrogen protection component is provided with a sealed annealing chamber, and the annealing chamber is the annealing position of the copper wire. During the annealing process of the copper wire, the nitrogen protection component injects nitrogen into the annealing chamber;

[0009] A safety protection component, which is arranged outside the annealing chamber;

[0010] Copper wire transmission component, the copper wire transmission component is used for transmitting copper wire;

[0011] Industrial control system: The industrial control system is connected with the induction heating component, the nitrogen protection component, the safety protection component and the copper wire transmission component. The industrial control system is used to control the induction heating component, the nitrogen protection component, the safety protection component and the copper wire transmission component.

[0012] Preferably, the induction heating assembly comprises:

[0013] A high-frequency induction coil, the high-frequency induction coil is connected to a high-frequency alternating current, and the high-frequency induction coil is arranged inside the annealing chamber;

[0014] A temperature sensor is disposed inside the annealing chamber and connected to the industrial control system. The temperature sensor is used to monitor the temperature inside the annealing chamber and feed the temperature back to the industrial control system.

[0015] PID controller, the PID controller is connected with the industrial control system, and the PID controller is used to control the heating temperature of the high-frequency induction coil.

[0016] Preferably, the nitrogen protection assembly comprises:

[0017] Nitrogen delivery port;

[0018] A gas flow control valve, the gas flow control valve is connected to the nitrogen delivery port, the gas flow control valve is connected to the industrial control system, and the gas flow control valve is used to control the output of nitrogen;

[0019] The gas pressure sensor is connected to the industrial control system, and the gas pressure sensor feeds back the gas pressure of the annealing chamber to the industrial control system.

[0020] Preferably, the safety protection component includes:

[0021] A safety shield, which is arranged on the outside of the annealing chamber;

[0022] Warning light: the warning light is set on the surface of the machine and is connected to the industrial control system;

[0023] Emergency stop button: The emergency stop button is set on the surface of the machine and is connected to the industrial control system.

[0024] Preferably, the copper wire transmission assembly comprises:

[0025] Precision guide rails, which are set on the surface of the machine;

[0026] The roller is rotatably connected to the surface of the machine table through a shaft, and the input end of the roller is connected to a servo driver, which is connected to the industrial control system;

[0027] Tension control system, the tension control system is connected with the industrial control system.

[0028] (3) Beneficial effects

[0029] Compared with the prior art, the beneficial effects of the utility model are:

[0030] 1. The utility model adopts a high-frequency induction coil to generate an alternating magnetic field through high-frequency alternating current, so that the copper wire generates eddy current inside it for rapid heating, ensuring fast heating speed, high efficiency and precise temperature control. It is equipped with advanced temperature sensors and PID controllers to achieve real-time monitoring and precise control of the heating temperature of the copper wire.

[0031] 2. The utility model is designed with a closed annealing chamber, in which pure nitrogen is injected to ensure that the copper wire is always in a nitrogen atmosphere during the annealing process to prevent oxidation and improve the quality of the welding strip. The appropriate nitrogen concentration and pressure in the chamber are maintained through a precise gas flow control valve and a pressure sensor.

[0032] 3. The utility model adopts a shielding design for the induction coil and high-frequency power supply to reduce electromagnetic radiation to the external space and protect operators from harm by high-frequency electromagnetic fields. Safety shields are added to key parts of the equipment to avoid exposure of high-temperature components. Warning lights and emergency stop buttons are also provided to ensure safe operation.

[0033] 4. The utility model adopts a precision guide rail and a servo-driven roller structure to ensure that the copper wire passes through the induction coil at a uniform and stable speed during the annealing process, and is equipped with a tension control system to avoid breakage caused by thermal expansion and contraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 What is shown is a schematic diagram of the structure of the utility model;

[0035] Figure 2 What is shown is a schematic diagram of the structure of the utility model;

[0036] Figure 3 Shown is a partial structural schematic diagram of the induction heating component and the nitrogen protection component in the utility model.

[0037] Explanation of the reference numerals: 1. Induction heating component; 2. Nitrogen protection component; 3. Safety protection component; 4. Copper wire transmission component; 101. High-frequency induction coil. DETAILED DESCRIPTION

[0038] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0039] Embodiment 1:

[0040] See also Figure 1-3The utility model provides an embodiment: a photovoltaic welding strip special annealing device based on the induction annealing principle and equipped with nitrogen protection, including an organic platform, and also including: an induction heating component 1, when the copper wire passes through the induction heating component 1, the induction heating component 1 heats the copper wire; a nitrogen protection component 2, the nitrogen protection component 2 is provided with a closed annealing cavity, the annealing cavity is the annealing position of the copper wire, and the nitrogen protection component 2 injects nitrogen into the annealing cavity during the annealing of the copper wire; a safety protection component 3, the safety protection component 3 is arranged on the outside of the annealing cavity; a copper wire transmission component 4, the copper wire transmission component 4 is used for the transmission of the copper wire; an industrial control system, the industrial control system is connected with the induction heating component 1, the nitrogen protection component 2, the safety protection component 3 and the copper wire transmission component 4, and the industrial control system is used to control the induction heating component 1, the nitrogen protection component 2, the safety protection component 3 and the copper wire transmission component 4.

[0041] Embodiment 2:

[0042] The induction heating assembly 1 comprises:

[0043] A high-frequency induction coil 101, to which high-frequency alternating current is connected, and the high-frequency induction coil 101 is disposed inside the annealing chamber;

[0044] A temperature sensor is arranged inside the annealing chamber, the temperature sensor is connected to the industrial control system, and the temperature sensor is used to monitor the temperature inside the annealing chamber and feed the temperature back to the industrial control system;

[0045] PID controller, the PID controller is connected to the industrial control system, and the PID controller is used to control the heating temperature of the high-frequency induction coil 101. During the annealing process, the temperature sensor feeds back the temperature signal to the PID controller in real time, and accurately adjusts the heating power to maintain a constant annealing temperature.

[0046] Embodiment 3:

[0047] The nitrogen protection assembly 2 includes:

[0048] Nitrogen delivery port;

[0049] A gas flow control valve, the gas flow control valve is connected to the nitrogen delivery port, the gas flow control valve is connected to the industrial control system, and the gas flow control valve is used to control the output of nitrogen;

[0050] Gas pressure sensor, the gas pressure sensor is connected to the industrial control system, the gas pressure sensor feeds back the gas pressure of the annealing chamber to the industrial control system, the copper wire quickly rises to the set annealing temperature under the action of the induced current, and at the same time, the gas flow control valve continuously injects nitrogen into the annealing chamber to form an inert atmosphere, the gas pressure sensor feeds back the gas pressure inside the annealing chamber to the industrial control system, when the gas pressure inside the annealing chamber reaches the preset value, or is less than the preset value, the gas flow control valve will reduce or increase the output.

[0051] Embodiment 4:

[0052] Security protection component 3 includes:

[0053] Safety shield: The safety shield is set on the outside of the annealing chamber. The induction coil and high-frequency power supply are shielded to reduce electromagnetic radiation to the external space and protect operators from high-frequency electromagnetic fields. Safety shields are added to key parts to avoid exposure of high-temperature components.

[0054] Warning light: The warning light is set on the surface of the machine and connected to the industrial control system to remind the staff in time;

[0055] Emergency stop button: The emergency stop button is set on the surface of the machine. The emergency stop button is connected to the industrial control system. The emergency stop button can control the equipment to stop in time.

[0056] Embodiment 5:

[0057] The copper wire transmission component 4 comprises:

[0058] Precision guide rails are set on the surface of the machine and are used to guide the moving route of the copper wire;

[0059] The roller is connected to the surface of the machine through a shaft. The input end of the roller is connected to a servo driver, which is connected to the industrial control system. The servo motor drives the roller to rotate, and the roller drives the copper wire to move.

[0060] The tension control system is connected to the industrial control system. The tension control system feeds back the surface tension of the copper wire to the industrial control system, and adjusts the tension of the copper wire in time through the industrial control system to avoid breakage of the copper wire due to thermal expansion and contraction.

[0061] Working process:

[0062] (1) The servo motor drives the roller to rotate, driving the copper wire to move through the precision guide rail into the annealing chamber and then into the induction coil;

[0063] (2) The PID controller controls the induction coil to input high-frequency alternating current. The copper wire quickly rises to the set annealing temperature under the action of the induced current. At the same time, the gas flow control valve continuously injects nitrogen into the annealing chamber to form an inert atmosphere. The gas pressure sensor feeds back the gas pressure inside the annealing chamber to the industrial control system. When the gas pressure inside the annealing chamber reaches the preset value, or is less than the preset value, the gas flow control valve will reduce or increase the output;

[0064] (3) During the annealing process, the temperature sensor feeds the temperature signal to the PID controller in real time, accurately adjusting the heating power to maintain a constant annealing temperature.

[0065] Through the above steps and the coordinated operation of the above structure and control system, the copper wire is efficiently annealed while ensuring the stability of product quality, reducing the wire breakage rate, and ensuring the safety of operators.

[0066] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A photovoltaic ribbon annealing device based on the induction annealing principle and equipped with nitrogen protection, comprising an organic platform, characterized in that: Also included are: An induction heating component (1), wherein the induction heating component (1) heats the copper wire when the copper wire passes through the induction heating component (1); A nitrogen protection component (2), wherein the nitrogen protection component (2) is provided with a sealed annealing chamber, the annealing chamber being the annealing position of the copper wire, and during the annealing process of the copper wire, the nitrogen protection component (2) injects nitrogen into the annealing chamber; A safety protection component (3), the safety protection component (3) is arranged outside the annealing chamber; A copper wire transmission component (4), the copper wire transmission component (4) is used for transmitting the copper wire; The industrial control system is connected to the induction heating component (1), the nitrogen protection component (2), the safety protection component (3) and the copper wire transmission component (4), and the industrial control system is used to control the induction heating component (1), the nitrogen protection component (2), the safety protection component (3) and the copper wire transmission component (4).

2. According to claim 1, a photovoltaic ribbon annealing device based on the induction annealing principle and equipped with nitrogen protection is characterized in that: The induction heating assembly (1) comprises: A high-frequency induction coil (101), the high-frequency induction coil (101) being connected to a high-frequency alternating current, and the high-frequency induction coil (101) being arranged inside the annealing chamber; A temperature sensor is disposed inside the annealing chamber and connected to the industrial control system. The temperature sensor is used to monitor the temperature inside the annealing chamber and feed the temperature back to the industrial control system. A PID controller is connected to the industrial control system and is used to control the heating temperature of the high-frequency induction coil (101).

3. According to claim 1, a photovoltaic ribbon annealing device based on the induction annealing principle and equipped with nitrogen protection is characterized in that: The nitrogen protection component (2) comprises: Nitrogen delivery port; A gas flow control valve, the gas flow control valve is communicated with the nitrogen delivery port, the gas flow control valve is connected to the industrial control system, and the gas flow control valve is used to control the output of nitrogen; A gas pressure sensor is connected to the industrial control system, and the gas pressure sensor feeds back the gas pressure of the annealing chamber to the industrial control system.

4. According to claim 1, a photovoltaic ribbon annealing device based on the induction annealing principle and equipped with nitrogen protection is characterized in that: The safety protection component (3) comprises: A safety shield, which is arranged outside the annealing chamber; A warning light, which is arranged on the surface of the machine and is connected to the industrial control system; An emergency stop button is arranged on the surface of the machine platform and is connected to the industrial control system.

5. According to claim 1, a photovoltaic ribbon annealing device based on the induction annealing principle and equipped with nitrogen protection is characterized in that: The copper wire transmission component (4) comprises: A precision guide rail, the precision guide rail being arranged on the surface of the machine platform; A roller, the roller is rotatably connected to the surface of the machine table through a shaft, the input end of the roller is connected to a servo driver, and the servo driver is connected to an industrial control system; A tension control system is connected to the industrial control system.

Images