Photovoltaic solder strip annealing device

Abstract

The utility model relates to the technical field of photovoltaic welding strip production, and discloses a photovoltaic welding strip annealing device which comprises a rack, a first electrified wheel and a second electrified wheel which are arranged up and down are arranged on the rack, and the first electrified wheel and the second electrified wheel are respectively provided with a power supply and receiving supporting mechanism; a plurality of middle guide wheels are arranged between the first electrified wheel and the second electrified wheel, the middle guide wheels are rotationally connected to an insulating supporting shaft, and the insulating supporting shaft is fixed to the rack; the second electrified wheel is arranged in the water tank, and the water level in the water tank is higher than the second electrified wheel; and the welding strip sequentially bypasses the first electrified wheel, the plurality of middle guide wheels and the second electrified wheel. The power supply and receiving supporting mechanism is insulated from the rack, and the middle guide wheel is arranged on the insulating supporting shaft, so that the rack can be effectively prevented from being electrified, the rack is effectively prevented from being electrified, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic welding strip production, in particular to a photovoltaic welding strip annealing device. Background Art

[0002] The welding strip is an important raw material in the welding process of photovoltaic modules. The quality of the welding strip will directly affect the current collection efficiency of the photovoltaic module and have a great impact on the power of the photovoltaic module. In the production process of the welding strip, the annealing process is a heat treatment process in which the copper strip is heated to a certain temperature according to the process requirements, kept warm for a period of time, and then cooled at an appropriate speed to change the structure and performance of the copper strip; the purpose is to soften the copper strip, improve its plasticity and toughness, make its chemical composition uniform, remove internal residual stress, reduce the yield of the welding strip, increase welding tension, and extend the service life of the welding strip. The existing photovoltaic welding strip annealing process is to make two of the pulleys electrified, so that the photovoltaic welding strip between the two pulleys is short-circuited, thereby completing the heating; the pulleys are rotated and connected to the frame, so that the frame is electrified. Although the frame is grounded, it still has certain safety hazards. Utility Model Content

[0003] The purpose of the utility model is to provide a photovoltaic welding strip annealing device, which can effectively prevent the frame from being electrified by insulating the power supply and receiving support mechanism from the frame and setting the intermediate guide wheel on the insulating support shaft, thereby effectively preventing the frame from being electrified and reducing safety hazards.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A photovoltaic welding strip annealing device comprises a frame, wherein the frame is provided with two first charged wheels and a second charged wheel arranged up and down, and each of the first charged wheel and the second charged wheel is provided with a power supply and receiving support mechanism;

[0006] A plurality of intermediate guide wheels are provided between the first charged wheel and the second charged wheel, and the intermediate guide wheels are rotatably connected to an insulating support shaft, and the insulating support shaft is fixed to the frame;

[0007] The second charged wheel is placed in a water tank, and the water level in the water tank is higher than the second charged wheel;

[0008] The welding belt passes around the first charged wheel, a plurality of intermediate guide wheels and the second charged wheel in sequence.

[0009] Through the above technical scheme, the welding strip between the first charged wheel and the second charged wheel is electrically short-circuited, thereby generating heat, and the heating temperature can reach 750-800°C. After the welding strip is heated, it automatically enters the water tank for cooling through the traction of the second charged wheel. After cooling, the temperature of the welding strip is below 50°C. The annealing heat treatment of the welding strip is completed by heating and cooling the welding strip.

[0010] The utility model is further configured as follows: the power supply and receiving support mechanism includes a core shaft, the middle part of the core shaft is rotatably connected in the support sleeve through a plurality of first bearings, the front end of the support sleeve is fixed to the insulating block through a first screw, the rear extended end of the support sleeve passes through the clearance hole of the frame and is inserted into the insulating seat, the insulating seat and the insulating block are respectively arranged on both sides of the frame and are fixedly connected to the frame;

[0011] A power supply and receiving ring is fixed at the rear end of the core shaft, and the outer wall of the power supply and receiving ring abuts against a plurality of brushes evenly distributed around the circumference, and the brushes are installed in the installation holes of the insulating seat;

[0012] The first charged wheel is fixed to the front end of the core shaft of the upper power supply and receiving support mechanism, and the second charged wheel is fixed to the front end of the core shaft of the lower power supply and receiving support mechanism.

[0013] The multiple brushes on the upper side are electrically connected to the positive pole of the power supply, and the multiple brushes on the lower side are electrically connected to the negative pole of the power supply.

[0014] Through the above technical scheme, a 12-24V DC power supply supplies power to multiple brushes on the upper side, and the brushes on the upper side transfer electricity to the upper core shaft. Then the current passes through the first charged wheel, the welding strip between the first charged wheel and the second charged wheel, the second charged wheel, and the lower core shaft in turn and then flows back to the brush on the lower side. The electricity of the brush on the lower side flows back to the power supply, thus forming a complete circuit, thereby completing the heating of the welding strip between the first charged wheel and the second charged wheel.

[0015] By arranging a gap between the insulating seat, the insulating block and the supporting sleeve and the clearance hole, the rack can be effectively prevented from being electrified.

[0016] The utility model is further configured as follows: a metal ring is embedded in the insulating block, and the first screw is screwed onto the metal ring.

[0017] Through the above technical solution, the connection stability between the insulating block and the supporting sleeve can be effectively improved, thereby improving the connection stability between the core shaft and the frame.

[0018] The utility model is further configured as follows: the first charged wheel and the second charged wheel are provided with a synchronous driving mechanism;

[0019] The synchronous drive mechanism includes a belt, which is passed around a first synchronous pulley, a second synchronous pulley, multiple intermediate pulleys and a driving pulley. The first synchronous pulley is fixed to the rear end of the core shaft of the upper power supply and receiving support mechanism, the second synchronous pulley is fixed to the rear end of the core shaft of the lower power supply and receiving support mechanism, and the intermediate pulley is rotatably connected to the frame; the driving pulley is fixed to the motor shaft of the motor, and the motor is fixed to the frame.

[0020] Through the above technical solution, the motor drives the driving pulley to rotate, the driving pulley drives the first synchronous pulley and the second synchronous pulley to rotate synchronously through the belt, the first synchronous pulley and the second synchronous pulley drive the first charged wheel and the second charged wheel to rotate through the corresponding core shaft, and the first charged wheel and the second charged wheel drive the welding belt transmission.

[0021] The utility model is further configured as follows: an insulating base wheel is fixed to the middle of each of the first synchronous belt wheel and the second synchronous belt wheel, and the insulating base wheel is fixed on the core shaft.

[0022] Through the above technical solution, by providing an insulating base wheel, it is possible to effectively prevent the electricity on the core shaft from being transmitted to the first synchronous belt pulley and the second synchronous belt pulley, so that the first synchronous belt pulley and the second synchronous belt pulley are not charged.

[0023] The outstanding effects of the utility model are:

[0024] Compared with the prior art, the frame can be effectively prevented from being electrified by insulating the power supply and receiving support mechanism from the frame and arranging the intermediate guide wheel on the insulating support shaft, thereby effectively preventing the frame from being electrified and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of the utility model;

[0026] Figure 2 It is a rear view of the utility model;

[0027] Figure 3 for Figure 1 Section view about AA.

[0028] Reference numerals: 10, frame; 101, clearance hole;

[0029] 20. First charged wheel; 21. Intermediate guide wheel; 23. Insulated support shaft; 24. Water tank;

[0030] 30. Power supply and receiving support mechanism; 301. Mandrel; 302. First bearing; 303. Support sleeve; 304. Insulation seat; 3041. Mounting hole; 305. Insulation block; 306. Power supply and receiving ring; 307. Brush; 308. Metal ring; 310. First screw;

[0031] 40. Synchronous drive mechanism; 401. Belt; 402. First synchronous pulley; 403. Second synchronous pulley; 404. Intermediate pulley; 405. Driving pulley; 406. Motor; 407. Insulating base pulley;

[0032] 90. Soldering strip. DETAILED DESCRIPTION

[0033] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] The following references Figures 1 to 3 The utility model is described as follows:

[0035] A photovoltaic welding strip annealing device comprises a frame 10, on which two first charged wheels 20 and a second charged wheel 21 are arranged vertically, and each of the first charged wheel 20 and the second charged wheel 21 is provided with a power supply and receiving support mechanism 30;

[0036] A plurality of intermediate guide wheels 22 are provided between the first charged wheel 20 and the second charged wheel 21. The intermediate guide wheels 22 are rotatably connected to an insulating support shaft 23, and the insulating support shaft 23 is fixed to the frame 10.

[0037] The second charged wheel 21 is placed in a water tank 24, and the water level in the water tank 24 is higher than the second charged wheel 21;

[0038] The welding belt 90 passes around the first charged wheel 20, a plurality of intermediate guide wheels 22 and the second charged wheel 21 in sequence.

[0039] The welding strip between the first charged wheel 20 and the second charged wheel 21 is electrically short-circuited, thereby generating heat, and the heating temperature can reach 750-800°C. After being heated, the welding strip is automatically drawn into the water tank for cooling by the second charged wheel. After cooling, the temperature of the welding strip is below 50°C. The annealing heat treatment of the welding strip is completed by heating and cooling the welding strip.

[0040] Preferably, the power supply and receiving support mechanism 30 includes a core shaft 301, the middle part of the core shaft 301 is rotatably connected in a support sleeve 303 through a plurality of first bearings 302, the front end of the support sleeve 303 is fixed to an insulating block 305 through a first screw 310, the rear extended end of the support sleeve 303 passes through the clearance hole 101 of the frame 10 and is inserted into an insulating seat 304, and the insulating seat 304 and the insulating block 305 are respectively arranged on both sides of the frame 10 and are fixedly connected to the frame 10;

[0041] A power supply and receiving ring 306 is fixed at the rear end of the core shaft 301, and the outer wall of the power supply and receiving ring 306 abuts against a plurality of brushes 307 evenly distributed around the circumference, and the brushes 307 are installed in the installation holes 3041 of the insulating seat 304;

[0042] The first charged wheel 20 is fixed to the front end of the core shaft 301 of the upper power supply and reception support mechanism 30 , and the second charged wheel 21 is fixed to the front end of the core shaft 301 of the lower power supply and reception support mechanism 30 .

[0043] The multiple brushes 307 on the upper side are electrically connected to the positive pole of the power supply, and the multiple brushes on the lower side are electrically connected to the negative pole of the power supply.

[0044] The power supply supplies power to multiple brushes on the upper side, and the brushes on the upper side transfer electricity to the upper core shaft. Then the current passes through the first charged wheel, the welding strip between the first charged wheel 20 and the second charged wheel 21, the second charged wheel, and the lower core shaft in turn, and then flows back to the brushes on the lower side. The electricity of the brushes on the lower side flows back to the power supply, thus forming a complete circuit, thereby completing the heating of the welding strip between the first charged wheel 20 and the second charged wheel 21.

[0045] By arranging a gap between the insulating seat, the insulating block and the supporting sleeve and the clearance hole, the rack can be effectively prevented from being electrified.

[0046] Preferably, a metal ring 308 is embedded in the insulating block 305 , and the first screw 310 is screwed onto the metal ring 308 .

[0047] The connection stability between the insulating block and the supporting sleeve can be effectively improved, thereby improving the connection stability between the core shaft and the frame.

[0048] Preferably, the first charged wheel 20 and the second charged wheel 21 are provided with a synchronous driving mechanism 40;

[0049] The synchronous drive mechanism 40 includes a belt 401, which is passed around a first synchronous pulley 402, a second synchronous pulley 403, a plurality of intermediate pulleys 404 and a driving pulley 405. The first synchronous pulley 402 is fixed to the rear end of the core shaft 301 of the upper power supply and receiving support mechanism 30, the second synchronous pulley 403 is fixed to the rear end of the core shaft 301 of the lower power supply and receiving support mechanism 30, and the intermediate pulley 404 is rotatably connected to the frame 10; the driving pulley 405 is fixed to the motor shaft of the motor 406, and the motor 406 is fixed to the frame 10.

[0050] The motor drives the driving pulley to rotate, and the driving pulley drives the first synchronous pulley and the second synchronous pulley to rotate synchronously through the belt. The first synchronous pulley and the second synchronous pulley drive the first charged wheel and the second charged wheel to rotate through the corresponding core shaft, and the first charged wheel and the second charged wheel drive the welding belt transmission.

[0051] Preferably, an insulating base wheel 407 is fixed to the middle of each of the first synchronous pulley 402 and the second synchronous pulley 403, and the insulating base wheel 407 is fixed on the core shaft.

[0052] The provision of an insulating base wheel can effectively prevent electricity on the core shaft from being transferred to the first synchronous belt pulley and the second synchronous belt pulley, thereby making the first synchronous belt pulley and the second synchronous belt pulley non-charged.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A photovoltaic ribbon annealing device, comprising a frame (10), characterized in that: The frame (10) is provided with a first charged wheel (20) and a second charged wheel (21) arranged vertically, and each of the first charged wheel (20) and the second charged wheel (21) is provided with a power supply and receiving support mechanism (30); A plurality of intermediate guide wheels (22) are provided between the first charged wheel (20) and the second charged wheel (21), wherein the intermediate guide wheels (22) are rotatably connected to an insulating support shaft (23), and the insulating support shaft (23) is fixed to the frame (10); The second charged wheel (21) is placed in a water tank (24), and the water level in the water tank (24) is higher than the second charged wheel (21); The welding belt (90) sequentially passes around the first charged wheel (20), a plurality of intermediate guide wheels (22), and the second charged wheel (21).

2. A photovoltaic ribbon annealing device according to claim 1, characterized in that: The power supply and receiving support mechanism (30) comprises a core shaft (301), the middle portion of the core shaft (301) is rotatably connected in a support sleeve (303) via a plurality of first bearings (302), the front end of the support sleeve (303) is fixed to an insulating block (305) via a first screw (310), the rear protruding end of the support sleeve (303) passes through a clearance hole (101) of the frame (10) and is inserted into an insulating seat (304), and the insulating seat (304) and the insulating block (305) are respectively arranged on both sides of the frame (10) and are both fixedly connected to the frame (10); A power supply and receiving ring (306) is fixed to the rear end of the core shaft (301); the outer wall of the power supply and receiving ring (306) abuts against a plurality of brushes (307) evenly distributed around the circumference; and the brushes (307) are installed in the installation holes (3041) of the insulating seat (304); The first charged wheel (20) is fixed to the front end of the core shaft (301) of the upper power supply and receiving support mechanism (30), and the second charged wheel (21) is fixed to the front end of the core shaft (301) of the lower power supply and receiving support mechanism (30).

3. A photovoltaic ribbon annealing device according to claim 2, characterized in that: The insulating block (305) is embedded with a metal ring (308), and the first screw (310) is screwed onto the metal ring (308).

4. A photovoltaic ribbon annealing device according to claim 2, characterized in that: The first charged wheel (20) and the second charged wheel (21) are provided with a synchronous driving mechanism (40); The synchronous drive mechanism (40) comprises a belt (401), the belt (401) passing around a first synchronous pulley (402), a second synchronous pulley (403), a plurality of intermediate pulleys (404) and a driving pulley (405), the first synchronous pulley (402) being fixed to the rear end of a core shaft (301) of an upper power supply and receiving support mechanism (30), the second synchronous pulley (403) being fixed to the rear end of a core shaft (301) of a lower power supply and receiving support mechanism (30), and the intermediate pulley (404) being rotatably connected to a frame (10); the driving pulley (405) being fixed to a motor shaft of a motor (406), and the motor (406) being fixed to the frame (10).

5. A photovoltaic ribbon annealing device according to claim 4, characterized in that: An insulating base wheel (407) is fixed to the middle of each of the first synchronous belt wheel (402) and the second synchronous belt wheel (403), and the insulating base wheel (407) is fixed on the core shaft.

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