Heating device and series welding machine

Abstract

The utility model relates to a heating device and a series welding machine. The heating device comprises a rack, a conveying piece, a first driving piece, a first heating piece and a second heating piece. The first heating piece and the second heating piece are connected to the rack and are oppositely arranged, a heating channel is formed between the first heating piece and the second heating piece, the conveying piece can penetrate through the heating channel, and the first driving piece is connected with the conveying piece so as to be used for driving the conveying piece to move. In the heating device, the first heating piece and the second heating piece are matched to form the heating channel, when the pressing net is conveyed on the conveying piece, the two opposite surfaces of the pressing net can be fully heated in the heating channel, and then the heating efficiency and heating sufficiency of the pressing net can be improved; therefore, the risk of pseudo soldering in the welding process of the battery piece is reduced, and the welding yield of the battery piece is improved. The series welding machine comprises a welding piece and the heating device.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and particularly to a heating device and a string welding machine. Background Art

[0002] In the process of manufacturing solar cells, a string welding machine is required to weld the cell wafers into a cell string. During the welding process, the cell wafers are usually pressed on the conveyor belt by a pressure grid and then welded. When the string welding machine starts to work, it is necessary to heat the pressure grid first to reduce the probability of virtual welding during the welding of the cell wafers. However, in traditional welding machines, the heating efficiency of the pressure grid is relatively low, and the heating sufficiency is relatively low. When welding the first cell wafer at the start of welding, the problem of virtual welding is likely to occur. Summary of the Utility Model

[0003] Based on this, it is necessary to provide a heating device that can improve the heating efficiency and heating sufficiency of the pressure grid, and a string welding machine including the heating device.

[0004] A heating device includes a frame, a transmission member, a first driving member, a first heating member, and a second heating member; the first heating member and the second heating member are respectively connected to the frame, and the first heating member and the second heating member are disposed opposite to each other. A heating channel is formed between the first heating member and the second heating member, the transmission member can pass through the heating channel, and the first driving member is connected to the transmission member to drive the transmission member to move.

[0005] In the above heating device, a heating channel is formed by the cooperation of the first heating member and the second heating member. When the pressure grid is transmitted on the transmission member, the two opposite surfaces of the pressure grid can be fully heated in the heating channel, thereby improving the heating efficiency and heating sufficiency of the pressure grid, reducing the risk of virtual welding during the welding of the cell wafers, and improving the welding yield of the cell wafers.

[0006] In some embodiments, the transmission member includes a first sub-transmission member and a second sub-transmission member; the first sub-transmission member and the second sub-transmission member are arranged in parallel, there is a gap between the first sub-transmission member and the second sub-transmission member, and the first heating member and the second heating member are disposed opposite to each other through the gap.

[0007] In some embodiments, the heating device further includes a second driving member; the second driving member is connected to the first heating member to drive the first heating member to move, so as to adjust the distance between the first heating member and the transmission member.

[0008] In some embodiments, the first heating element includes a first housing and a first heat generating element; the first heat generating element is disposed within the first housing, the first housing has an opening facing the transmission member, and the heat generated by the first heat generating element is dissipated through the opening.

[0009] In some embodiments, the first heat generating element is an infrared lamp tube.

[0010] In some embodiments, the second heating element includes a second housing, a second heat generating element, and a heat conducting medium; the second heat generating element is disposed within the second housing, and the heat conducting medium is filled between the second housing and the second heat generating element.

[0011] In some embodiments, the second heat generating element is an electric heating wire, and the heat conducting medium is heat conducting oil.

[0012] In some embodiments, there are multiple second heating elements, and the multiple second heating elements are arranged side by side.

[0013] In some embodiments, the heating device further includes a controller and a temperature detector; the temperature detector is configured to detect the temperature information of the first heating element and / or the second heating element, and the controller is electrically connected to the temperature detector to receive the temperature information detected by the temperature detector and control the heating power of the first heating element and / or the second heating element according to the temperature information.

[0014] A string welding machine includes a welding member and the heating device; in the transmission direction of the transmission member, the welding member is located downstream of the first heating element; the first heating element and the second heating element are configured to heat the pressure mesh on the transmission member, and the welding member is configured to weld the solar cells pressed by the pressure mesh.

[0015] In the above string welding machine, through the cooperation of the heating device and the welding member, the heating device can fully heat the pressure mesh. When the fully heated pressure mesh presses the solar cells, the solar cells can maintain a stable temperature, reducing the risk of false soldering during the welding process of the solar cells, and thus improving the welding yield of the solar cells. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the heating device in a first perspective according to an embodiment of the present application.

[0017] Figure 2 It is a schematic structural diagram of the heating device in a second perspective according to an embodiment of the present application.

[0018] Figure 3 It is a schematic structural diagram of the heating device in a third perspective according to an embodiment of the present application.

[0019] It is understandable that the first perspective, the second perspective, and the third perspective are all different.

[0020] Description of the markings in the figure:

[0021] 10. Heating device; 101. Frame; 102. Transmission member; 1021. First sub-transmission member; 1022. Second sub-transmission member; 103. First driving member; 104. First heating member; 1041. First housing; 105. Second heating member; 1051. Second housing; 106. Second driving member; 107. Electrical connection member; 20. Pressing net. Detailed implementation manners

[0022] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description 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.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are 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.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0025] In this application, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. 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.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0027] Please refer to Figures 1 to 3 , an embodiment of this application provides a heating device 10. The heating device 10 includes a frame 101, a transmission member 102, a first driving member 103, a first heating member 104, and a second heating member 105. The first heating member 104 and the second heating member 105 are respectively connected to the frame 101, and the first heating member 104 and the second heating member 105 are arranged oppositely. A heating channel is formed between the first heating member 104 and the second heating member 105. The transmission member 102 can pass through the heating channel. The first driving member 103 is connected to the transmission member 102 to drive the transmission member 102 to move. In the heating device 10 of this embodiment, a heating channel is formed by the cooperation of the first heating member 104 and the second heating member 105. When the press mesh 20 is transmitted on the transmission member 102, two opposite surfaces of the press mesh 20 can be fully heated in the heating channel, thereby improving the heating efficiency and heating sufficiency of the press mesh 20, reducing the risk of virtual soldering during the welding process of the battery chip, and improving the welding yield of the battery chip.

[0028] It can be understood that when heating the press mesh 20, the two opposite surfaces of the press mesh 20 can be heated by the first heating member 104 and the second heating member 105 respectively.

[0029] Optionally, the first driving member 103 is a rotary motor, and the transmission member 102 is a transmission belt. The transmission belt is driven by the rotary motor to move, thereby realizing the transmission of materials such as the press mesh 20 and the battery chip. Further optionally, the transmission member 102 is a transmission belt.

[0030] In some embodiments, the transmission member 102 includes a first sub - transmission member 1021 and a second sub - transmission member 1022. The first sub - transmission member 1021 and the second sub - transmission member 1022 are arranged in parallel, and there is a gap between the first sub - transmission member 1021 and the second sub - transmission member 1022. The first heating member 104 and the second heating member 105 are oppositely arranged through the gap. By providing the first sub - transmission member 1021 and the second sub - transmission member 1022 with a gap, the press mesh 20 can better receive the heat provided by the first heating member 104 and the second heating member 105 on the basis of stable transmission, and heat the press mesh 20 more fully. It can be understood that both the first sub - transmission member 1021 and the second sub - transmission member 1022 are transmission belts, and the first sub - transmission member 1021 and the second sub - transmission member 1022 can move synchronously under the driving action of the first driving member 103. It can also be understood that the opposite arrangement of the first heating member 104 and the second heating member 105 through the gap indicates that the connection line between the first heating member 104 and the second heating member 105 passes through the gap between the first sub - transmission member 1021 and the second sub - transmission member 1022.

[0031] In some embodiments, the first heating member 104 is located above the transmission member 102, and the second heating member 105 is located below the transmission member 102. At this time, the upper and lower surfaces of the press mesh 20 can be heated by the first heating member 104 and the second heating member 105 respectively, improving the sufficiency of heating the press mesh 20.

[0032] In some embodiments, the heating device 10 further includes a second driving member 106. The second driving member 106 is connected to the first heating member 104 to drive the first heating member 104 to move, so as to adjust the distance between the first heating member 104 and the transmission member 102. By the second driving member 106, the distance between the first heating member 104 and the transmission member 102 can be adjusted, and further the distance between the first heating member 104 and the press mesh 20 on the transmission member 102 can be adjusted, facilitating the control of the heating environment of the press mesh 20. Optionally, the second driving member 106 is a telescopic cylinder.

[0033] In some embodiments, the first heating member 104 includes a first housing 1041 and a first heat - generating member (not shown in the figure). The first heat - generating member is arranged in the first housing 1041. The first housing 1041 has an opening facing the transmission member 102, and the heat generated by the first heat - generating member is dissipated through the opening. By providing an opening on the first housing 1041, the heat generated by the first heat - generating member can be dissipated from the opening, which is beneficial to controlling the direction of heat dissipation and improving the utilization rate of the heat generated by the first heat - generating member. Optionally, the first heat - generating member is an infrared lamp tube.

[0034] In some embodiments, the second heating element 105 includes a second housing 1051, a second heat generating element (not shown in the figure), and a heat conducting medium (not shown in the figure). The second heat generating element is disposed within the second housing 1051, and the heat conducting medium is filled between the second housing 1051 and the second heat generating element. This allows the heat generated by the second heat generating element to be conducted to the second housing 1051 through the heat conducting medium and dissipated through the second housing 1051. Optionally, the second heat generating element is a heating wire and the heat conducting medium is heat conducting oil.

[0035] Further, in some embodiments, the heating device 10 further includes an electrical connector 107. One end of the electrical connector 107 is connected to the second heat generating element, and the other end of the electrical connector 107 is connected to an external power source (not shown in the figure). By connecting the second heat generating element and the external power source through the electrical connector 107, the second heat generating element can generate heat by means of electric heating.

[0036] In some embodiments, the second heating element 105 is fixedly connected to the frame 101.

[0037] In some embodiments, the area of the second heating element 105 close to the transmission member 102 is larger than the area of the first heating element 104 close to the transmission member 102. The larger area of the second heating element 105 can heat the press mesh 20 more sufficiently.

[0038] In some embodiments, there are multiple second heating elements 105, and the multiple second heating elements 105 are arranged side by side. Optionally, the number of second heating elements 105 can be two, three, four, five, six, seven, eight, etc. It can be understood that the appropriate number of second heating elements 105 can be selected according to actual needs.

[0039] In some embodiments, the heating device 10 further includes a controller (not shown in the figure) and a temperature detector (not shown in the figure). The temperature detector is used to detect the temperature information of the first heating element 104 and / or the second heating element 105. The controller is electrically connected to the temperature detector to receive the temperature information detected by the temperature detector and control the heating power of the first heating element 104 and / or the second heating element 105 according to the temperature information. It can be understood that temperature detectors corresponding to the first heating element 104 and the second heating element 105 can be provided to detect the temperature information of the first heating element 104 and the second heating element 105 respectively.

[0040] The heating powers of the first heating element 104 and the second heating element 105 can be controlled by a controller. During normal welding processes, the first heating element 104 and the second heating element 105 can be controlled to operate at a lower power, or the first heating element 104 and the second heating element 105 can be controlled to turn off. When a fault occurs during the welding process and the machine stops temporarily, the first heating element 104 and the second heating element 105 can be controlled to operate, thereby heating and keeping warm the pressure grid 20. When the fault is eliminated and the machine enters the next stage of normal welding, the pressure grid 20 in use has a more appropriate temperature due to the action of the first heating element 104 and the second heating element 105. In this way, the pressure grid 20 with an appropriate temperature can be put into use in a timely manner, reducing the risk of false soldering while improving the welding production efficiency and the utilization rate of the string welding machine.

[0041] Another embodiment of the present application provides a string welding machine. The string welding machine includes a welding component and the above-mentioned heating device 10. In the transmission direction of the transmission component 102, the welding component is located downstream of the first heating element 104. The first heating element 104 and the second heating element 105 are used to heat the pressure grid 20 on the transmission component 102, and the welding component is used to weld the solar cells pressed by the pressure grid 20. In the string welding machine of this embodiment, through the cooperation of the heating device 10 and the welding component, the heating device 10 can fully heat the pressure grid 20. When the fully heated pressure grid 20 presses the solar cells, the solar cells can maintain a stable temperature, reducing the risk of false soldering during the welding process of the solar cells, and thus improving the welding yield of the solar cells.

[0042] 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.

[0043] The above-described embodiments only 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 should be subject to the appended claims, and the specification and the drawings can be used to explain the content of the claims.

Claims

1. A heating device (10), characterized in that: The invention comprises a frame (101), a transmission member (102), a first driving member (103), a first heating member (104) and a second heating member (105); the first heating member (104) and the second heating member (105) are respectively connected to the frame (101), and the first heating member (104) and the second heating member (105) are arranged opposite to each other, a heating channel is formed between the first heating member (104) and the second heating member (105), the transmission member (102) can pass through the heating channel, and the first The driving member (103) is connected to the transmission member (102) for driving the transmission member (102) to move; the transmission member (102) comprises a first sub-transmission member (1021) and a second sub-transmission member (1022); the first sub-transmission member (1021) and the second sub-transmission member (1022) are arranged in parallel, a gap exists between the first sub-transmission member (1021) and the second sub-transmission member (1022), and the first heating member (104) and the second heating member (105) are arranged relative to each other via the gap.

2. The heating device (10) according to claim 1, characterized in that The heating device (10) further comprises a second driving member (106); the second driving member (106) is connected to the first heating member (104) for driving the first heating member (104) to move so as to adjust the distance between the first heating member (104) and the transmission member (102).

3. The heating device (10) according to claim 2, characterized in that: The first heating element (104) comprises a first shell (1041) and a first heat generating element; the first heat generating element is arranged in the first shell (1041), the first shell (1041) has an opening, the opening faces the transmission element (102), and the heat generated by the first heat generating element is dissipated through the opening.

4. The heating device (10) according to claim 3, characterized in that The first heat generating component is an infrared lamp.

5. The heating device (10) according to claim 2, characterized in that The second heating element (105) comprises a second shell (1051), a second heat generating element and a heat conducting medium; the second heat generating element is arranged in the second shell (1051), and the heat conducting medium is filled between the second shell (1051) and the second heat generating element.

6. The heating device (10) according to claim 5, characterized in that The second heat generating element is a heating wire, and the heat conducting medium is heat conducting oil.

7. The heating device (10) according to claim 1, characterized in that An area of ​​the second heating element (105) close to the transmission element (102) is larger than an area of ​​the first heating element (104) close to the transmission element (102).

8. The heating device (10) according to any one of claims 1 to 7, characterized in that: There are a plurality of the second heating elements (105), and the plurality of the second heating elements (105) are arranged side by side.

9. The heating device (10) according to any one of claims 1 to 7, characterized in that: The heating device (10) further comprises a controller and a temperature detector; the temperature detector is used to detect temperature information of the first heating element (104) and / or the second heating element (105); the controller is electrically connected to the temperature detector to receive the temperature information detected by the temperature detector, and controls the heating power of the first heating element (104) and / or the second heating element (105) according to the temperature information.

10. A string welding machine, characterized in that: It comprises a welding part and a heating device (10) according to any one of claims 1 to 9; in the transmission direction of the transmission member (102), the welding part is located downstream of the first heating member (104); the first heating member (104) and the second heating member (105) are used to heat a pressing mesh (20) on the transmission member (102), and the welding part is used to weld the battery cell pressed by the pressing mesh (20).

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