Welding lamp box and series welding machine

Abstract

The utility model relates to a welding lamp box and a series welding machine, the welding lamp box comprises a lamp box shell, a welding assembly and a plurality of temperature detection modules, the lamp box shell comprises a surrounding plate and a lamp box shell with an opening, the surrounding plate is arranged at the opening and is coaxial with the opening, and the surrounding plate and the lamp box shell jointly define an air cavity; an air inlet is formed in the lamp box shell, a plurality of suction openings are formed in the surrounding plate, and the suction openings are formed in the circumferential direction of the surrounding plate at intervals; the welding assembly is arranged in the air cavity; the multiple temperature detection modules are arranged at different positions of the air cavity correspondingly, a heat dissipation medium can enter the air cavity through the air inlet and exchange heat with heat in the air cavity, and finally the heat dissipation medium is pumped to the outside through the suction openings, so that heat dissipation of the welding assembly and the temperature in the air cavity is achieved, and the multiple suction openings are formed in the circumferential direction of the surrounding plate at intervals. Heat in the air cavity can be conducted to the periphery, the phenomenon that wind power in a local area is not uniform is avoided, the stability of the heat dissipation effect and the welding effect is guaranteed, and the temperature equalizing effect can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of battery strings, and particularly to a welding light box and a string welding machine. Background Art

[0002] In the automatic production process of photovoltaic modules, it is necessary to weld the welding tape to the battery cells. As a key device for welding, the welding light box directly determines the welding quality. The welding light box irradiates the welding tape to melt it, so that the welding tape is welded to the battery cells.

[0003] In the related art, a cooling fan is usually arranged above the welding light box, and the cooling fan blows directly downward on the welding area, which is likely to cause turbulence, resulting in uneven wind force in local areas and affecting the heat dissipation of the welding light box and the stability of the welding effect. Summary of the Invention

[0004] Based on this, it is necessary to provide a welding light box and a string welding machine that can avoid the phenomenon of uneven wind force in local areas and ensure the stability of the heat dissipation effect and the welding effect.

[0005] A welding light box includes:

[0006] A light box housing, the light box housing includes a surrounding plate and a light box outer shell with an opening, the surrounding plate is arranged at the opening of the light box outer shell and is coaxial with the opening, and the surrounding plate and the light box outer shell jointly enclose to form a wind cavity; an air inlet communicating with the wind cavity is provided on the light box outer shell, and a plurality of air extraction openings communicating with the wind cavity are provided on the surrounding plate, and the plurality of air extraction openings are arranged at intervals along the circumferential direction of the surrounding plate;

[0007] A welding assembly, the welding assembly is arranged in the wind cavity;

[0008] A plurality of temperature detection modules, the plurality of temperature detection modules are respectively arranged at different positions in the wind cavity, and the temperature detection modules are used to detect the temperature inside the wind cavity.

[0009] In one embodiment, the welding light box further includes a control module and an air extraction assembly, the air extraction assembly is communicated with the plurality of air extraction openings, and the control module is electrically connected with the plurality of temperature detection modules and the air extraction assembly.

[0010] In one embodiment, the air extraction assembly includes an air extraction member, an air extraction pipeline and a first control valve, the air extraction member is used to extract a heat dissipation medium, the air extraction pipeline communicates the air extraction member with the plurality of air extraction openings, and the first control valve is arranged in the air extraction pipeline to control the flow rate in the air extraction pipeline.

[0011] In one embodiment, the exhaust ducts include a plurality of them, and the plurality of air extraction openings are respectively communicated with the air extraction member through a plurality of exhaust ducts.

[0012] In one embodiment, the distance between two adjacent air extraction openings is 10 mm to 100 mm.

[0013] In one embodiment, the plurality of temperature detection modules include a first temperature detection module and a plurality of second temperature detection modules. The first temperature detection module is located in the middle of the air cavity, and the plurality of second temperature detection modules are arranged at intervals along the circumferential direction of the first temperature detection module.

[0014] In one embodiment, the soldering light box further includes a blowing assembly. The blowing assembly includes a blowing member, an air inlet duct, and a second control valve. The blowing member is used to provide a heat dissipation medium. The air inlet duct communicates the blowing member with the air inlet opening. The second control valve is arranged in the air inlet duct and is used to control the flow rate in the air inlet duct.

[0015] In one embodiment, the enclosure includes a plurality of side plates. The plurality of side plates are sequentially connected end to end, and each side plate is provided with the air extraction opening.

[0016] The present application also provides a string welding machine, including the soldering light box as described above.

[0017] In one embodiment, the string welding machine further includes a welding platform. A placement area for placing battery wafers and welding tapes is provided on the welding platform, and the soldering light box can cover the placement area.

[0018] In the above solution, by providing an air inlet opening on the light box housing and a plurality of air extraction openings on the enclosure, the heat dissipation medium can enter the air cavity through the air inlet opening, exchange heat with the heat in the air cavity, and finally be drawn to the outside through the air extraction openings, so as to realize heat dissipation for the welding assembly and the air cavity. Moreover, the plurality of air extraction openings are arranged at intervals along the circumferential direction of the enclosure, which can conduct the heat inside the air cavity to the surrounding areas, avoid over-welding at the middle high temperature, and avoid the phenomenon of uneven wind force in local areas, ensuring the stability of the heat dissipation effect and the welding effect. At the same time, it can realize guiding the heat to the surrounding areas with faster heat dissipation through the air convection method, avoid virtual soldering due to temperature loss, reduce the temperature difference between the inside and the surrounding of the air cavity, so as to achieve the effect of uniform temperature; by providing a plurality of temperature detection modules, the temperature at different positions inside the air cavity can be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application.

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of a welding light box shown in an embodiment of the present application.

[0022] Figure 2 It is a partial structural diagram of a welding light box shown in an embodiment of the present application.

[0023] Figure 3 It is a partial structural diagram of a welding light box shown in an embodiment of the present application.

[0024] Description of reference numerals

[0025] Reference numerals:

[0026] 10. Welding light box; 100. Light box housing; 110. Enclosure panel; 111. Air extraction port; 120. Light box outer shell; 121. Air inlet; 200. Welding assembly; 210. Mounting seat; 220. Lamp tube; 300. Temperature detection module; 400. Welding platform; 500. Solar cell. Detailed implementation manners

[0027] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will give a detailed description of the specific implementation manners of the present application with reference to the drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0028] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0029] In addition, if the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In this application, unless otherwise clearly specified and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In this application, unless otherwise clearly specified and defined, if there is a description such as a first feature being "on" or "under" a second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0033] During the automatic production process of photovoltaic modules, it is necessary to weld the solder tape to the solar cell. The welding light box, as the key equipment for welding, directly determines the welding quality. The welding light box irradiates the solder tape to melt the solder tape, so that the solder tape is welded to the solar cell.

[0034] In the related art, a cooling fan is usually arranged above the welding light box, and the cooling fan blows directly downward on the welding area, which is likely to cause turbulence, resulting in uneven wind force in a local area, affecting the heat dissipation of the welding light box and the stability of the welding effect.

[0035] For the above problems, please refer to Figure 1 , Figure 2 and Figure 3 , an embodiment of the present application relates to a welding light box 10, including a light box housing 100, a welding assembly 200 and a plurality of temperature detection modules 300. The welding assembly 200 and the plurality of temperature detection modules 300 are both arranged in the light box housing 100. The welding assembly 200 is used to generate heat for welding the welding tape and the battery cell 500, so as to realize welding the welding tape on the battery cell 500. The plurality of temperature detection modules 300 are used to detect the temperature inside the light box housing 100.

[0036] The light box housing 100 includes a surrounding plate 110 and a light box outer shell 120 with an opening. The surrounding plate 110 is arranged at the opening of the light box outer shell 120 and is coaxial with the opening. The surrounding plate 110 and the light box outer shell 120 jointly enclose to form a wind cavity. An air inlet 121 communicating with the wind cavity is provided on the light box outer shell 120, and a plurality of air extraction ports 111 communicating with the wind cavity are provided on the surrounding plate 110. The plurality of air extraction ports 111 are arranged at intervals along the circumferential direction of the surrounding plate 110. Specifically, the opening of the light box outer shell 120 faces downward.

[0037] Please refer to Figure 1 , Figure 2 and Figure 3 , the welding assembly 200 is arranged in the wind cavity. By providing the air inlet 121 on the light box outer shell 120 and a plurality of air extraction ports 111 on the surrounding plate 110, the heat dissipation medium can enter the wind cavity through the air inlet 121, exchange heat with the heat in the wind cavity, and finally be extracted to the outside through the air extraction ports 111, so as to realize heat dissipation of the welding assembly 200 and the temperature in the wind cavity. Moreover, the plurality of air extraction ports 111 are arranged at intervals along the circumferential direction of the surrounding plate 110, which can conduct the heat inside the wind cavity to the surrounding, avoid over-welding at the middle high temperature, and avoid the phenomenon of uneven wind force in a local area, ensure the stability of the heat dissipation effect and the welding effect, and at the same time can realize guiding the heat to the surrounding fast heat dissipation areas through the air convection method, avoid false soldering due to temperature loss, reduce the temperature difference between the inside and the surrounding of the wind cavity, so as to achieve the effect of uniform temperature.

[0038] The plurality of temperature detection modules 300 are respectively arranged at different positions in the wind cavity, and the temperature detection module 300 is used to detect the temperature inside the wind cavity. By providing the plurality of temperature detection modules 300, the temperature at different positions inside the wind cavity can be detected.

[0039] Please refer to Figure 1 , Figure 2 and Figure 3, according to some embodiments of the present application, optionally, the welded light box 10 further includes a control module and an air extraction assembly. The air extraction assembly is communicated with a plurality of air extraction ports 111, and the control module is electrically connected to the plurality of temperature detection modules 300 and the air extraction assembly. Specifically, the control module is communicatively connected to the plurality of temperature detection modules 300, and the control module is control-connected to the air extraction assembly. Exemplarily, the control module is used to achieve automatic control, and the control module can adopt a single-chip microcomputer.

[0040] The temperature detection module 300 is used to detect the temperature inside the air cavity and transmit the data to the control module. The control module controls the air volume of the air extraction assembly according to the temperature distribution inside the air cavity. When the data detected by the temperature detection module 300 exceeds the set value, the control module controls the air volume of the air extraction assembly to increase, so as to extract the gas with a higher temperature inside the air cavity, and heat dissipation of the welding assembly 200 and the air cavity can be realized.

[0041] Please refer to Figure 1 、 Figure 2 and Figure 3 , according to some embodiments of the present application, optionally, the air extraction assembly includes an air extraction member, an air extraction pipeline and a first control valve. The air extraction member is used to extract the heat dissipation medium. The air extraction pipeline communicates the air extraction member with a plurality of air extraction ports 111. The first control valve is arranged in the air extraction pipeline and is used to control the flow rate in the air extraction pipeline. In this embodiment, the heat dissipation medium is a gas. Exemplarily, the heat dissipation medium is air. The first control valve can adopt an electromagnetic valve.

[0042] The control module is control-connected to the air extraction member and the first control valve. When the data detected by the temperature detection module 300 exceeds the set value, the control module controls the air volume of the air extraction member to increase and controls the opening degree of the first control valve to increase.

[0043] The number of the air extraction pipelines is multiple. In this embodiment, the number of the air extraction ports 111 corresponds to the number of the air extraction pipelines one by one, and each air extraction port 111 corresponds to an air extraction pipeline. The air extraction member is communicated with a plurality of air extraction pipelines. The number of the air extraction members is one. Each air extraction pipeline is provided with a first control valve.

[0044] The gas with a lower temperature can enter the air cavity through the air inlet 121. After exchanging heat with the heat in the air cavity, the temperature of the gas is increased. The air extraction assembly extracts the gas with a higher temperature to the outside of the light box housing 100, avoiding heat accumulation inside the light box housing 100, so as to realize heat dissipation inside the light box housing 100.

[0045] Please refer to Figure 1 、 Figure 2 and Figure 3, according to some embodiments of the present application, optionally, there are multiple exhaust ducts, and multiple exhaust ports 111 are respectively connected to an exhaust member through the multiple exhaust ducts. The number of exhaust ports 111 corresponds one-to-one with the number of exhaust ducts. Each exhaust port 111 corresponds to an exhaust duct, and each exhaust duct corresponds to an exhaust member. The exhaust duct covers the exhaust port 111. Each exhaust duct is provided with a first control valve.

[0046] Multiple temperature detection modules 300 are respectively arranged at different positions in the air cavity. By respectively controlling the air volume of each exhaust port 111, the temperature control of different positions in the air cavity can be achieved, so that the temperature distribution in the air cavity is uniform. Specifically, when the temperature detection module 300 at a certain position in the air cavity detects that the temperature at this position exceeds the set value, it can control the air volume of the exhaust port 111 closer to this position to increase, so as to quickly cool down this position and ensure the uniform temperature distribution in the air cavity.

[0047] Please refer to Figure 1 , Figure 2 and Figure 3 , according to some embodiments of the present application, optionally, the distance between two adjacent exhaust ports 111 is 10 mm to 100 mm. The present application does not limit the distance between two adjacent exhaust ports 111, and it can be set according to actual use requirements. Exemplarily, the distance between two adjacent exhaust ports 111 is 10 mm, 20 mm, 50 mm or 100 mm, etc.

[0048] The length of the exhaust port 111 is 300 mm to 500 mm, and the exhaust port 111 has a rectangular structure. The present application does not limit the length of the exhaust port 111, and it can be set according to actual use requirements. Exemplarily, the length of the exhaust port 111 is 300 mm, 350 mm, 400 mm or 500 mm, etc.

[0049] Please refer to Figure 1 , Figure 2 and Figure 3 , according to some embodiments of the present application, optionally, the multiple temperature detection modules 300 include a first temperature detection module 300 and multiple second temperature detection modules 300. The first temperature detection module 300 is located in the middle of the air cavity, and the multiple second temperature detection modules 300 are arranged at intervals along the circumference of the first temperature detection module 300. In this embodiment, the number of the second temperature detection modules 300 is four. The four second temperature detection modules 300 are respectively located at the four corners of the air cavity. In other embodiments, the number of the second temperature detection modules 300 can be two, three, five, six or even more.

[0050] Please refer to Figure 1 , Figure 2 and Figure 3, according to some embodiments of the present application, optionally, the number of the temperature detection modules 300 can be two. The two temperature detection modules 300 are arranged at intervals in the air cavity. Exemplarily, the temperature detection module 300 adopts a thermocouple for temperature detection.

[0051] Please refer to Figure 1 , Figure 2 and Figure 3 , according to some embodiments of the present application, optionally, the welding light box 10 further includes a blowing assembly. The blowing assembly includes a blowing member, an air inlet duct, and a second control valve. The blowing member is used to provide a heat dissipation medium. The air inlet duct communicates the blowing member with the air inlet 121. The second control valve is arranged in the air inlet duct and is used to control the flow rate in the air inlet duct. In this embodiment, the heat dissipation medium is a gas. Exemplarily, the heat dissipation medium is air. The second control valve can adopt a solenoid valve.

[0052] The control module is controllably connected to the blowing assembly. The control module controls the air volume of the blowing assembly according to the temperature distribution inside the air cavity. Specifically, the control module is controllably connected to the blowing member and the second control valve. When the data detected by the temperature detection module 300 exceeds the set value, the control module controls the air volume of the blowing member to increase and controls the opening degree of the first control valve to increase, so as to blow more heat dissipation medium into the air cavity, and the heat exchange efficiency can be improved.

[0053] Please refer to Figure 1 , Figure 2 and Figure 3 , according to some embodiments of the present application, optionally, the enclosure 110 includes a plurality of side plates. The plurality of side plates are sequentially connected end to end. Each side plate is provided with an air extraction port 111. In one embodiment, the number of the side plates is four. The four side plates are sequentially connected end to end. The four side plates and the light box housing 120 jointly enclose to form an air cavity. In another embodiment, the number of the side plates is three, five, six or more.

[0054] The present application also provides a string welding machine, including the welding light box 10 as described above.

[0055] Please refer to Figure 1 , Figure 2 and Figure 3 , according to some embodiments of the present application, optionally, the string welding machine further includes a welding platform 400. A placement area for placing the battery cells 500 and the welding tapes is arranged on the welding platform 400. The welding light box 10 can cover the placement area to weld the welding tapes on the battery cells 500.

[0056] Exemplarily, the battery cells 500 adopt zero busbar (0BB) cells, and the zero busbar cells can reduce costs and increase efficiency.

[0057] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0058] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A welded light box, characterized in that, Comprising: A light box housing, the light box housing includes a surrounding plate and a light box outer shell with an opening, the surrounding plate is arranged at the opening of the light box outer shell and is coaxial with the opening, and the surrounding plate and the light box outer shell jointly enclose to form a wind cavity; an air inlet communicating with the wind cavity is provided on the light box outer shell, and a plurality of air extraction openings communicating with the wind cavity are provided on the surrounding plate, and the plurality of air extraction openings are arranged at intervals along the circumferential direction of the surrounding plate; A welding assembly, the welding assembly is arranged in the wind cavity; A plurality of temperature detection modules, the plurality of temperature detection modules are respectively arranged at different positions in the wind cavity, and the temperature detection module is used to detect the temperature inside the wind cavity.

2. The welded light box according to claim 1, wherein It further includes a control module and an air extraction assembly, the air extraction assembly is communicated with the plurality of air extraction openings, and the control module is electrically connected with the plurality of temperature detection modules and the air extraction assembly.

3. The welded light box according to claim 2, characterized in that, The air extraction assembly includes an air extraction member, an air extraction pipeline and a first control valve, the air extraction member is used for extracting a heat dissipation medium, the air extraction pipeline connects the air extraction member and the plurality of air extraction openings, and the first control valve is arranged in the air extraction pipeline for controlling the flow rate in the air extraction pipeline.

4. The welded light box according to claim 3, characterized in that, There are a plurality of the air extraction pipelines, and the plurality of air extraction openings are respectively communicated with the air extraction member through the plurality of air extraction pipelines.

5. The welded light box according to claim 3, wherein The distance between two adjacent air extraction openings is 10 mm to 100 mm.

6. The welded light box according to claim 1, characterized in that, The plurality of temperature detection modules include a first temperature detection module and a plurality of second temperature detection modules, the first temperature detection module is located in the middle of the wind cavity, and the plurality of second temperature detection modules are arranged at intervals along the circumferential direction of the first temperature detection module.

7. The welded light box according to claim 1, wherein It further includes a blowing assembly, the blowing assembly includes a blowing member, an air inlet pipeline and a second control valve, the blowing member is used for providing a heat dissipation medium, the air inlet pipeline connects the blowing member and the air inlet, and the second control valve is arranged in the air inlet pipeline for controlling the flow rate in the air inlet pipeline.

8. The welded light box according to claim 1, wherein The surrounding plate includes a plurality of side plates, the plurality of side plates are sequentially connected end to end, and each side plate is provided with the air extraction opening.

9. A string welding machine, characterized in that, Including the welding light box according to any one of claims 1 to 8.

10. The string welding machine according to claim 9, characterized in that, The string welding machine further includes a welding platform, a placement area for placing battery wafers and welding tapes is arranged on the welding platform, and the welding light box can cover the placement area.

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