Novel welding equipment for solar photovoltaic welding strip

Abstract

The utility model relates to the field of photovoltaic technology, in particular to novel welding equipment for a solar photovoltaic welding strip, which comprises a welding block and a protective cover connected onto the welding block, a transformer circuit module is arranged on the inner side of the protective cover, a heating cavity is arranged on one side surface, far away from the protective cover, of the welding block, and the transformer circuit module is arranged in the heating cavity. An induction coil group in a fluctuating state is arranged in the heating cavity, and the induction coil group is composed of a plurality of magnetic cores and copper sheets. Electric energy is converted into heat energy according to the electromagnetic induction principle formed by the transformer circuit module and the induction coil set, the device is made to be stable and reliable, continuous repeated welding work of the welding device is achieved in cooperation with the lifting device connected through the connecting hole, welding personnel do not need to hold an electric soldering iron device to conduct welding work, and the welding efficiency is improved. The problem that the battery piece is broken due to unskilled operation of workers is solved, it is guaranteed that the quality of welded products is qualified, and production of photovoltaic batteries is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, and in particular to a novel welding device for solar photovoltaic welding strips. Background Art

[0002] Solar panels are devices that absorb sunlight and convert solar radiation energy directly or indirectly into electrical energy through the photoelectric effect or photochemical effect. Solar panels are made up of spliced ​​cells, that is, two adjacent cells are welded together using welding strips.

[0003] At present, the traditional welding technology for welding strips and cells mostly uses manual handheld electric soldering iron devices for welding. In the process of using this traditional welding method, skilled welders must use experience to master the time and pressure of the electric soldering iron on the welding strip according to the tinning thickness of the welding strip and the specific situation of the cell cutting line to perform welding operations. This not only greatly restricts the welding speed, but more importantly, if the welder is not skilled in operation, it is easy to cause welding stress in the solar cell, causing the hidden danger of cell rupture. If not discovered in time, it will also affect the production of the entire solar photovoltaic cell, resulting in unqualified product quality and certain cost losses. Utility Model Content

[0004] The utility model provides a novel welding device for solar photovoltaic welding strips to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A new type of welding equipment for solar photovoltaic welding strips, including a welding block and a protective cover connected to the welding block, a transformer circuit module is arranged on the inner side of the protective cover, and a heating chamber is provided on a side of the welding block away from the protective cover, an induction coil group in an undulating state is arranged inside the heating chamber, the induction coil group is composed of a plurality of magnetic cores and copper sheets, the positive and negative poles of the copper sheets are electrically connected to the transformer circuit module, and a ceramic sheet for sealing the heating chamber and connected to the welding block is provided on one side of the induction coil group, a plurality of vents are provided on the surface of the ceramic sheet, a plurality of first cooling holes corresponding to the vents and a plurality of second cooling holes located on one side of the first cooling holes are provided on the welding block, a cooling assembly is arranged on the welding block, the cooling assembly is communicated with the first cooling hole and the second cooling hole, a temperature sensor for monitoring the temperature of the welding block is arranged on the welding block, and a heat dissipation assembly for cooling the transformer circuit module is installed on the protective cover.

[0007] Preferably, the cooling assembly includes a first air flow channel and a second air flow channel opened on the welding block and a first cooling air joint installed at the input ends of the first air flow channel and the second air flow channel respectively, and a number of the first cooling holes are connected to the first air flow channel, and a number of the second cooling holes are connected to the second air flow channel.

[0008] Preferably, the heat dissipation assembly includes a support plate installed on one side of the protective cover, a third air flow channel opened on the support plate, a second cooling air connector installed at the input end of the third air flow channel, and a U-shaped plate connected to the support plate and blocking the third air flow channel, and gaps are provided between two opposite inner side surfaces of the U-shaped plate and the surface of the support plate.

[0009] Preferably, the U-shaped plate is connected to a side of the support plate away from the transformer circuit module.

[0010] Preferably, the cooling assembly also includes a fourth air flow channel opened on one side of the welding block, a third cooling air joint installed at the input end of the fourth air flow channel, and a flow channel plate connected to the welding block and sealing the fourth air flow channel, and the welding block and the flow channel plate are respectively provided with air outlet holes connected to the fourth air flow channel.

[0011] Preferably, a groove is provided on one side of the welding block which is perpendicular to the ceramic sheet, the fourth air flow channel is provided on the inner wall of the groove, and a partition is provided in the inner cavity of the groove, and a through hole is provided on the surface of the partition.

[0012] Preferably, a fifth air flow channel is provided on the flow channel plate, the fifth air flow channel is communicated with the fourth air flow channel through a through hole, and the two air outlet holes are respectively communicated with the fifth air flow channel.

[0013] Preferably, silencers are respectively installed in the two air outlets.

[0014] Preferably, the inner wall of the heating chamber is provided with two copper sheet openings penetrating through the welding block, and both ends of the copper sheet are electrically connected to the transformer circuit module via the copper sheet openings.

[0015] Preferably, a connection hole for connecting to a lifting device is provided on a side of the welding block away from the ceramic sheet.

[0016] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0017] In the utility model, the electromagnetic induction principle formed by the transformer circuit module and the induction coil group is adopted to convert electrical energy into thermal energy, so that the equipment is stable and reliable, and the lifting device connected by the connecting hole is cooperated to realize the continuous repeated welding work of the welding equipment, without the need for the welder to hold the electric soldering iron device to perform the welding work, reducing the problem of battery cell rupture caused by the unskilled operation of the staff, ensuring the quality of the welding product, and facilitating the production of photovoltaic cells.

[0018] In the utility model, the temperature of the welding head can be reduced by a cooling component, and the temperature of the welding head can be monitored in real time by a temperature sensor to see if there is any abnormality, thereby avoiding the problem of unstable welding caused by high or low temperature, and the components in the transformer circuit module can be cooled and dissipated by the heat dissipation component to ensure the working stability of the transformer circuit module and avoid the problem of damage to the transformer circuit module due to long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall right side structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the heating chamber of the utility model;

[0022] Figure 4 This is a schematic diagram of the top cross-sectional structure of the welding block of the utility model;

[0023] Figure 5 It is a schematic diagram of the heat dissipation component of the utility model;

[0024] Figure 6 It is a side cross-sectional schematic diagram of the heat dissipation assembly of the utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the fourth air flow channel of the utility model;

[0026] Figure 8 This is a schematic diagram of the side cross-sectional structure of the welding block of the utility model;

[0027] Fig. 9 This is a schematic diagram of the partition structure of the utility model;

[0028] Fig.10 It is a schematic diagram of the copper sheet mouth structure of the utility model.

[0029] In the figure: 1. welding block; 2. protective cover; 3. transformer circuit module; 4. heating chamber; 5. induction coil group; 6. magnetic core; 7. copper sheet; 8. ceramic sheet; 9. vent; 10. first cooling hole; 11. second cooling hole; 12. temperature sensor; 13. first air flow channel; 14. second air flow channel; 15. first cooling air connector; 16. support plate; 17. third air flow channel; 18. second cooling air connector; 19. U-shaped plate; 20. fourth air flow channel; 21. third cooling air connector; 22. flow channel plate; 23. groove; 24. partition; 25. through hole; 26. fifth air flow channel; 27. muffler; 28. copper sheet mouth; 29. ​​connecting hole. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0032] Example

[0033] like Figure 1-10 As shown, the utility model provides a new type of welding equipment for solar photovoltaic welding strips, including a welding block 1 and a protective cover 2 connected to the welding block 1, a transformer circuit module 3 is arranged on the inner side of the protective cover 2, and a heating chamber 4 is opened on a side of the welding block 1 away from the protective cover 2, and an induction coil group 5 in an undulating state is arranged inside the heating chamber 4, and the induction coil group 5 is composed of a plurality of magnetic cores 6 and a copper sheet 7, the magnetic core 6 is an E-type magnetic core, and the positive and negative poles of the copper sheet 7 are electrically connected to the transformer circuit module 3, and a ceramic sheet 8 for sealing the heating chamber 4 and connected to the welding block 1 is arranged on one side of the induction coil group 5, and the surface of the ceramic sheet 8 is A plurality of ventilation holes 9 are provided through the surface, a plurality of first cooling holes 10 corresponding to the ventilation holes 9 and a plurality of second cooling holes 11 located on one side of the first cooling holes 10 are provided on the welding block 1, and a cooling component is provided on the welding block 1, the cooling component is communicated with the first cooling holes 10 and the second cooling holes 11, and a temperature sensor 12 for monitoring the temperature of the welding block 1 is provided on the welding block 1. The temperature sensor 12 is an existing device and its structure has not been improved. Its working principle and installation and use method are familiar to those skilled in the art and will not be elaborated in detail herein. A heat dissipation component for cooling the transformer circuit module 3 is installed on the protective cover 2.

[0034] Specifically, in this scheme, the transformer circuit module 3 can be used to invert the input direct current into a high-frequency, low-voltage, large current, and then the high-frequency current flows through the induction coil group 5 composed of the copper sheet 7 and the magnetic core 6 through the two ends of the connecting copper sheet 7, thereby generating a high-speed changing alternating magnetic field. When the welding strip is placed on the ceramic sheet 8, the welding strip cuts the alternating magnetic lines and generates alternating current (i.e., eddy current). The eddy current causes the carriers of the welding strip to move irregularly at high speed, and the carriers collide and rub against each other to generate heat energy, thereby achieving the effect of heating the welding strip.

[0035] In this embodiment, the cooling assembly includes a first air flow channel 13 and a second air flow channel 14 opened on the welding block 1 and a first cooling air connector 15 respectively installed at the input ends of the first air flow channel 13 and the second air flow channel 14, and a plurality of first cooling holes 10 are connected to the first air flow channel 13, and a plurality of second cooling holes 11 are connected to the second air flow channel 14.

[0036] Specifically, the first air channel 13 and the second air channel 14 respectively penetrate and extend from one side of the welding block 1 to the other side of the welding block 1, and then the first cooling air connector 15 is connected to an existing air compressor in the outside through the air supply pipe, so that when the air compressor is working, the compressed air can pass through the first air channel 13 and then be ejected through the other end of the first air channel 13, and the compressed air is synchronously ejected through a plurality of first cooling holes 10, and can be ejected through the other end of the second air channel 14 after passing through the second air channel 14, and is synchronously ejected through a plurality of second cooling holes 11, so that after the welding of the welding strip is completed, the welding strip is quickly cooled and shaped, and the plurality of first cooling holes 10 and second cooling holes 11 are spaced apart, so that the flow of compressed air can effectively reduce the temperature of the welding block 1 and the welding head, and the air compressor is an existing conventional equipment, and this article does not make any structural improvements to this equipment, and thus this equipment is well known to those skilled in the art and is used in various industries, and this article will not elaborate on this in detail.

[0037] When the equipment of the present application is actually used, one end of the first air duct 13 and the second air duct 14 can be installed with a muffler 27 or the muffler 27 can be removed according to the space environment of use. The main purpose of installing the muffler 27 is to reduce the noise generated during the cooling of the compressed air. It should be emphasized that the normal cooling work of the equipment of the present application is not affected when the muffler 27 is not installed.

[0038] In this embodiment, the cooling component also includes a fourth air flow channel 20 opened on one side of the welding block 1, a third cooling air joint 21 installed at the input end of the fourth air flow channel 20, and a flow channel plate 22 connected to the welding block 1 and blocking the fourth air flow channel 20, and the welding block 1 and the flow channel plate 22 are respectively provided with air outlet holes communicated with the fourth air flow channel 20, a groove 23 is opened on one side of the welding block 1 that is perpendicular to the ceramic sheet 8, the fourth air flow channel 20 is opened on the inner wall of the groove 23, and a partition 24 is provided in the inner cavity of the groove 23, and a through hole 25 is opened on the surface of the partition 24, and a fifth air flow channel 26 is opened on the flow channel plate 22, the fifth air flow channel 26 is communicated with the fourth air flow channel 20 through the through hole 25, and the two air outlet holes are respectively communicated with the fifth air flow channel 26.

[0039] Specifically, Figure 7 and Figure 8 As shown, by utilizing the distribution of the fourth air channel 20 and the fifth air channel 26 and the design of the partition plate 24, the compressed air can flow completely in the welding block 1, thereby achieving the effect of quickly reducing the temperature of the welding head.

[0040] To be more specific, a muffler 27 is respectively installed in the two air outlets, and the muffler 27 can be removed individually or in pairs according to the space environment of the equipment used in this solution. The main purpose of installing the muffler 27 is to reduce the noise generated during the cooling of the compressed air. It should be emphasized that the normal cooling work of the equipment in this solution is not affected when the muffler 27 is not installed.

[0041] The first cooling air connector 15 and the third cooling air connector 21 are arranged on the same side and are centrally arranged at one end of the welding block 1, so that the air pipes are neatly routed when connected and the entanglement problem is avoided.

[0042] In this embodiment, the heat dissipation assembly includes a support plate 16 installed on one side of the protective cover 2, a third air flow channel 17 opened on the support plate 16, a second cooling air connector 18 installed at the input end of the third air flow channel 17, and a U-shaped plate 19 connected to the support plate 16 and blocking the third air flow channel 17, and gaps are provided between the two opposite inner side surfaces of the U-shaped plate 19 and the surface of the support plate 16, and the U-shaped plate 19 is connected to a side of the support plate 16 away from the transformer circuit module 3.

[0043] Specifically, a gap is set between the U-shaped plate 19 and the support plate 16 so that after the second cooling air connector 18 is connected to the air compressor, the compressed air can be ejected outward through the gap, thereby slowly cooling and dissipating the components in the transformer circuit module 3, thereby ensuring the working stability of the transformer circuit module 3 and avoiding the problem of damage to the transformer circuit module 3 caused by long-term high-intensity ejection.

[0044] In this embodiment, the inner wall of the heating chamber 4 is provided with two copper sheet openings 28 penetrating through the welding block 1 , and both ends of the copper sheet 7 are electrically connected to the transformer circuit module 3 via the copper sheet openings 28 .

[0045] In this embodiment, a connecting hole 29 for connecting a lifting device is provided on a side of the welding block 1 away from the ceramic sheet 8. The connecting hole 29 is used to cooperate with the installation of an existing lifting device from the outside, thereby prompting the welding equipment to perform lifting work, which is beneficial for welding the welding strip. The lifting device can be a variety of mechanical structures and can also be a cylinder device, which can be changed and used in combination according to the specific use environment.

[0046] One end of the protective cover 2 is connected to the middle of the welding block 1, and a plurality of connecting holes 29 are provided and symmetrically arranged with the protective cover 2, so as to ensure the stability of the welding equipment during use.

[0047] The working principle and use process of this utility model:

[0048] Before use, by energizing the transformer circuit module 3, the transformer circuit module 3 can invert the input direct current into a high-frequency, low-voltage, large current, and then the high-frequency current flows through the induction coil group 5 composed of the copper sheet 7 and the magnetic core 6 through the two ends of the connecting copper sheet 7, thereby generating a high-speed changing alternating magnetic field. When the welding strip is placed on the ceramic sheet 8, the welding strip cuts the alternating magnetic field lines and generates an alternating current (i.e., eddy current). The eddy current causes the carriers of the welding strip to move irregularly at high speed, and the carriers collide and rub against each other to generate heat energy, which has the effect of heating the welding strip;

[0049] The first cooling air joint 15, the second cooling air joint 18 and the third cooling air joint 21 are respectively connected to the air compressor through air pipes and are controlled by technical personnel in this field so that when the welding equipment is performing welding work, no compressed air flows in the first cooling air joint 15, the second cooling air joint 18 and the third cooling air joint 21, and after the welding equipment completes welding, compressed air flows in the first cooling air joint 15, the second cooling air joint 18 and the third cooling air joint 21.

[0050] When in use, the welding equipment is connected and fixed to an external lifting device through the connecting hole 29, so that the lifting device can drive the welding equipment to move up and down indirectly after setting the lifting parameters, so that the induction coil group 5 is heated and the welding strip is repeatedly welded through the ceramic sheet 8. There is no need for welders to hold a soldering iron device to perform welding work, which reduces the problem of cracks in the welding strip and the battery cell caused by the unskilled operation of the staff, and ensures the quality of the welded products. At the same time, the electromagnetic induction principle formed by the transformer circuit module 3 and the induction coil group 5 is used to convert electrical energy into thermal energy, so that the equipment is stable and reliable, and the temperature sensor 12 can be used to monitor whether the temperature of the welding head is abnormal in real time to avoid the problem of unstable welding caused by high or low temperature.

[0051] During use, when the welding equipment is welding, no compressed air flows in the first cooling air joint 15, the second cooling air joint 18 and the third cooling air joint 21, and after the welding equipment completes welding, compressed air flows in the first cooling air joint 15, the second cooling air joint 18 and the third cooling air joint 21, and then the compressed air flows through the first cooling hole 10 and the second cooling hole 11 to achieve rapid cooling and shaping of the welding strip, and cooperates with the fourth air flow channel 20 and the fifth air flow channel 26 to effectively reduce the temperature of the welding head, so that the compressed air does not flow when welding again, and this type of operation is repeated after welding is completed again.

[0052] In the present utility model, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The term "and / or" used in this article includes any and all combinations of one or more related listed items. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0053] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0054] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A new type of welding equipment for solar photovoltaic ribbon, characterized by: The invention comprises a welding block (1) and a protective cover (2) connected to the welding block (1), a transformer circuit module (3) being arranged on the inner side of the protective cover (2), and a heating chamber (4) being provided on a side of the welding block (1) away from the protective cover (2), an induction coil group (5) in an undulating state being arranged inside the heating chamber (4), the induction coil group (5) being composed of a plurality of magnetic cores (6) and a copper sheet (7), the positive and negative electrodes of the copper sheet (7) being electrically connected to the transformer circuit module (3), and a ceramic plate for sealing the heating chamber (4) and being connected to the welding block (1) being provided on one side of the induction coil group (5). The invention relates to a ceramic sheet (8), wherein a plurality of ventilation holes (9) are formed on the surface of the ceramic sheet (8), a plurality of first cooling holes (10) corresponding to the ventilation holes (9) and a plurality of second cooling holes (11) located on one side of the first cooling holes (10) are formed on the welding block (1), and a cooling component is arranged on the welding block (1), the cooling component is communicated with the first cooling holes (10) and the second cooling holes (11), and a temperature sensor (12) for monitoring the temperature of the welding block (1) is arranged on the welding block (1), and a heat dissipation component for cooling a transformer circuit module (3) is installed on the protective cover (2).

2. A new type of welding equipment for solar photovoltaic ribbon according to claim 1, characterized in that: The cooling assembly comprises a first air flow channel (13) and a second air flow channel (14) opened on the welding block (1), and a first cooling air connector (15) respectively installed at the input ends of the first air flow channel (13) and the second air flow channel (14), and a plurality of the first cooling holes (10) are in communication with the first air flow channel (13), and a plurality of the second cooling holes (11) are in communication with the second air flow channel (14).

3. A new type of welding equipment for solar photovoltaic ribbon according to claim 1, characterized in that: The heat dissipation assembly comprises a support plate (16) mounted on one side of the protective cover (2), a third air flow channel (17) opened on the support plate (16), a second cooling air connector (18) mounted at the input end of the third air flow channel (17), and a U-shaped plate (19) connected to the support plate (16) and blocking the third air flow channel (17), and gaps are provided between two opposite inner side surfaces of the U-shaped plate (19) and the surface of the support plate (16).

4. A new type of welding equipment for solar photovoltaic ribbon according to claim 3, characterized in that: The U-shaped plate (19) is connected to a side of the support plate (16) away from the transformer circuit module (3).

5. A new type of welding equipment for solar photovoltaic ribbon according to claim 2, characterized in that: The cooling assembly further comprises a fourth air flow channel (20) provided on one side of the welding block (1), a third cooling air connector (21) installed at the input end of the fourth air flow channel (20), and a flow channel plate (22) connected to the welding block (1) and sealing the fourth air flow channel (20), and the welding block (1) and the flow channel plate (22) are respectively provided with air outlet holes communicating with the fourth air flow channel (20).

6. A new type of welding equipment for solar photovoltaic ribbon according to claim 5, characterized in that: A groove (23) is provided on one side of the welding block (1) which is arranged perpendicularly to the ceramic sheet (8); the fourth air flow channel (20) is provided on the inner wall of the groove (23); a partition (24) is provided in the inner cavity of the groove (23); and a through hole (25) is provided through the surface of the partition (24).

7. A new type of welding equipment for solar photovoltaic ribbon according to claim 6, characterized in that: The flow channel plate (22) is provided with a fifth flow channel (26), the fifth flow channel (26) is communicated with the fourth flow channel (20) through a through hole (25), and the two air outlet holes are respectively communicated with the fifth flow channel (26).

8. A new type of welding equipment for solar photovoltaic ribbon according to claim 7, characterized in that: A muffler (27) is installed in each of the two air outlet holes.

9. A new type of welding equipment for solar photovoltaic ribbon according to claim 1, characterized in that: The inner wall of the heating chamber (4) is provided with two copper sheet openings (28) penetrating the welding block (1), and both ends of the copper sheet (7) are electrically connected to the transformer circuit module (3) via the copper sheet openings (28).

10. A new type of welding equipment for solar photovoltaic ribbon according to claim 1, characterized in that: A connection hole (29) for connecting to a lifting device is provided on a side of the welding block (1) away from the ceramic sheet (8).

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