Transmission welding table device and solar cell welding machine

Abstract

The present invention discloses a transmission welding table device and a solar cell welding machine. The transmission welding table device includes a machine base, a transmission device, a heating device and a cooling device. A plurality of temperature zones are formed on the machine base, including a preheating temperature zone, a welding temperature zone and a cooling temperature zone. The transmission device includes a conveyor belt. A plurality of laying positions distributed in a front-to-back direction are formed on the conveyor belt. The conveyor belt allows a plurality of solar cells to pass through the preheating temperature zone and the welding temperature zone in sequence and then be delivered to the cooling temperature zone. The heating device is set corresponding to the preheating temperature zone and / or the welding temperature zone, and the cooling device is set corresponding to the cooling temperature zone. The transmission device transmits a plurality of solar cells between different temperature zones, preheats them in the preheating temperature zone, welds them in the welding temperature zone, and enters the cooling temperature zone for cooling, so that a plurality of solar cells can be welded and transmitted between different temperature zones conveniently, thereby improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of solar cell welding, and in particular to a transmission welding table device and a solar cell welding machine. Background Art

[0002] Solar energy is a renewable and clean energy. Using solar energy to generate electricity has been increasingly valued and favored by people. Although solar cell strings can now be automatically welded by string welding machines, the existing technology can only achieve single-string welding, resulting in low production efficiency. Summary of the invention

[0003] In view of the defects of traditional string welding machines, the applicant has proposed a solar cell welding machine that can simultaneously weld multiple strings of solar cells. The solar cell welding machine requires multiple strings of solar cells to be welded simultaneously. How to conveniently realize the transmission and welding of multiple solar cells is an urgent problem to be solved.

[0004] To achieve the above-mentioned purpose, the transmission welding table device proposed by the present invention comprises:

[0005] The machine base forms a plurality of temperature zones arranged in the left and right directions, wherein the plurality of temperature zones include a preheating temperature zone, a welding temperature zone and a cooling temperature zone;

[0006] A conveying device is arranged on the machine base, comprising a conveyor belt for conveying solar cells from left to right, wherein a plurality of laying positions distributed in a front-to-back direction are formed on the conveyor belt, each of the laying positions is used to lay a solar cell, and the conveyor belt allows the plurality of solar cells to pass through the preheating temperature zone and the welding temperature zone in sequence and then be delivered to the cooling temperature zone;

[0007] a heating device, mounted on the machine base and arranged corresponding to the preheating temperature zone and / or the welding temperature zone, for heating the solar cell sheets passing through the preheating temperature zone and / or the welding temperature zone; and

[0008] A cooling device is installed on the machine base and is arranged corresponding to the cooling temperature zone, and is used to cool the solar cell sheets after welding.

[0009] Optionally, corresponding to any of the temperature zones, three laying positions distributed along the front-to-back direction are formed on the conveyor belt for laying three solar cells at the same time, and the three solar cells are conveyed along the left-to-right direction at the same time.

[0010] Optionally, the conveyor belt comprises an upper conveyor belt section located at the top and a lower conveyor belt section located at the bottom;

[0011] The machine base comprises a support platform located at the top, the support platform is extended in the left-right direction, and the support platform is located between the upper conveyor belt section and the lower conveyor belt section.

[0012] Optionally, the conveyor belt is provided with a plurality of air holes spaced apart in the front-rear direction at the laying position;

[0013] The transmission welding table device also includes a support adsorption component arranged between the upper conveyor belt section and the support platform, a negative pressure adsorption chamber connected to the vacuum device is formed in the support adsorption component, and an adsorption hole connected to the negative pressure adsorption chamber is provided on the support adsorption component. The adsorption hole is used to connect to the air vent, so as to adsorb and fix the solar cell sheets laid on the upper conveyor belt section.

[0014] Optionally, the supporting adsorption assembly includes a plurality of adsorption plates distributed along the left and right directions, each of the adsorption plates is hollow inside and connected to the vacuum device to form a negative pressure adsorption chamber, and each of the adsorption plates is provided with a plurality of adsorption holes connected to the negative pressure adsorption chamber.

[0015] Optionally, the transmission welding table device also includes a temperature sensing device installed on the machine base, and the temperature sensing device is set corresponding to the preheating temperature zone and / or welding temperature zone, and is used to monitor the temperature of the preheating temperature zone and / or welding temperature zone.

[0016] Optionally, the support platform is provided with a blowing hole;

[0017] The cooling device comprises a cooling fan, which is arranged below the supporting platform and is used to blow cold air into the air holes and dissipate heat for the solar cell sheets after welding.

[0018] Optionally, the cooling device further comprises a heat sink, the heat sink comprising a heat sink disposed at the lower end of the support platform and a plurality of heat sink ribs disposed on the lower end surface of the heat sink and extending in the up-and-down direction;

[0019] The cooling fan is arranged at the lower ends of the plurality of heat dissipation ribs.

[0020] Optionally, a plurality of cooling fans are provided.

[0021] The present invention further provides a solar cell welding machine, the solar cell welding machine comprising a transmission welding table device, the transmission welding table device comprising:

[0022] The machine base forms a plurality of temperature zones arranged in the left and right directions, wherein the plurality of temperature zones include a preheating temperature zone, a welding temperature zone and a cooling temperature zone;

[0023] A conveying device is arranged on the machine base, comprising a conveyor belt for conveying solar cells from left to right, wherein a plurality of laying positions distributed in a front-to-back direction are formed on the conveyor belt, each of the laying positions is used to lay a solar cell, and the conveyor belt allows the plurality of solar cells to pass through the preheating temperature zone and the welding temperature zone in sequence and then be delivered to the cooling temperature zone;

[0024] a heating device, mounted on the machine base and arranged corresponding to the preheating temperature zone and / or the welding temperature zone, for heating the solar cell sheets passing through the preheating temperature zone and / or the welding temperature zone; and

[0025] A cooling device is installed on the machine base and is arranged corresponding to the cooling temperature zone, and is used to cool the solar cell sheets after welding.

[0026] In the technical solution provided by the present invention, a plurality of laying positions distributed along the front-to-back direction are formed on the conveyor belt, and the conveyor belt can lay a plurality of the solar cells at the same time. The conveying device transfers the plurality of solar cells between different temperature zones, preheats them in the preheating temperature zone, welds them in the welding temperature zone, and cools them in the cooling temperature zone, thereby conveniently realizing the welding of a plurality of solar cells and transferring them between different temperature zones, improving work efficiency, paving the way for the production of ultra-densely arranged solar cell groups, and having a good effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a transmission welding table device provided by the present invention;

[0029] Figure 2 for Figure 1 A schematic diagram of a three-dimensional structure of a middle transmission welding table device (without a conveyor belt) turned upside down;

[0030] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the cooling device;

[0031] Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure of the conveyor belt;

[0032] Figure 5 for Figure 1Schematic diagram of the three-dimensional structure of the medium transmission welding table device (without the transmission device).

[0033] Description of Figure Numbers:

[0034] Label name Label name 100 Transmission welding table device 213 Lower conveyor belt section 1 Base 214 Ventilation holes 11 Preheating temperature zone 3 Cooling device 12 Cooling temperature zone 31 Cooling fan 13 Support platform 32 Heat sink 14 Welding temperature zone 33 Heat dissipation ribs 2 Conveyor 4 Support adsorption components 21 Conveyor Belt 4a Adsorption board 211 Laying position 41 Adsorption hole 212 Upper conveyor belt section

[0035] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] Solar energy is a renewable and clean energy. Using solar energy to generate electricity has been increasingly valued and favored by people. Traditional solar cell modules are mostly a series structure composed of multiple battery cells. The luminous efficiency of the entire module is low. In the prior art, ultra-densely arranged solar cell modules have appeared. Interconnecting strips are added between multiple battery strings to achieve parallel connection of multiple battery strings, which greatly improves the luminous efficiency of the battery module.

[0040] In the production of ultra-densely arranged solar cell groups, it is necessary to achieve welding of multiple strings of battery cells and interconnection between multiple battery strings. Traditional solar cell string welding machines can only achieve single-string welding, with low production efficiency, and cannot meet the production requirements of ultra-densely arranged solar cell groups.

[0041] In view of the defects of traditional solar cell string welding machines, the applicant has proposed a solar cell welding machine that can simultaneously weld multiple strings of solar cells, and interconnection strips can be added between multiple strings of cells. The string welding of multiple strings of solar cells requires improved production efficiency and the transmission and welding of multiple solar cells.

[0042] The solar cell welding machine provided by the present invention includes a transmission welding table device. Any solar cell welding machine having the transmission welding table device is within the scope of the present invention, wherein: Figures 1 to 5 A schematic diagram of the three-dimensional structure of an embodiment of a transmission welding table device provided by the present invention.

[0043] See also Figure 1 and Figure 2 The transmission welding table device 100 includes a machine base 1, a conveying device 2, a heating device and a cooling device 3. The machine base 1 is formed with a plurality of temperature zones arranged in the left and right directions, and the plurality of temperature zones include a preheating temperature zone 11, a welding temperature zone 14 and a cooling temperature zone 12. The conveying device 2 is arranged on the machine base 1. The conveying device 2 includes a conveyor belt 21 for conveying solar cells from left to right. The conveyor belt 21 is formed with a plurality of laying positions 211 distributed in the front and rear directions. Each of the laying positions 211 is used to lay a solar cell. The conveyor belt 21 allows the plurality of solar cells to pass through the preheating temperature zone 11 and the welding temperature zone 14 in sequence and then be delivered to the cooling temperature zone 12. The heating device is installed on the machine base 1 and is arranged corresponding to the preheating temperature zone 11 and / or the welding temperature zone 14, and is used to heat the solar cells passing through the preheating temperature zone 11 and / or the welding temperature zone 14. The cooling device 3 is installed on the machine base 1 and is arranged corresponding to the cooling temperature zone 12, and is used to cool the solar cells after welding.

[0044] In the technical solution provided by the present invention, a plurality of laying positions 211 distributed along the front-to-back direction are formed on the conveyor belt 21, and the conveyor belt 21 can lay a plurality of the solar cells at the same time. The conveying device 2 transfers the plurality of solar cells between different temperature zones, preheats them in the preheating temperature zone 11, welds them in the welding temperature zone 14, and cools them in the cooling temperature zone 12, so that the welding of a plurality of solar cells and their transmission between different temperature zones can be conveniently realized, thereby improving work efficiency, paving the way for the production of ultra-densely arranged solar cell groups, and having a good effect.

[0045] It should be noted that, in the entire solar cell welding machine, a plurality of different temperature zones are formed on the machine base 1. Corresponding to the needs of the welding process, preheating before welding, welding insulation and cooling after welding are required. In this embodiment, the plurality of temperature zones include a preheating temperature zone 11, a welding temperature zone 14 and a cooling temperature zone 12. The transmission welding table device can sequentially transfer the plurality of solar cells between the above-mentioned different temperature zones.

[0046] In addition, the present invention does not limit the number of the laying positions 211, which can be 2, 3, 4 or more. In this embodiment, three laying positions 211 distributed along the front-to-back direction are formed on the conveyor belt 21 to lay three solar cells at the same time, and the three solar cells are conveyed along the left-to-right direction at the same time. Compared with the welding of a single string of battery cells in the prior art, the efficiency can be increased by about 3 times, which has a better effect.

[0047] Specifically, in this embodiment, the conveyor belt 21 includes an upper conveyor belt segment 212 located at the top and a lower conveyor belt segment 213 located at the bottom, and the machine base 1 includes a support platform 13 located at the top, and the support platform 13 is extended in the left and right directions, and the support platform 13 is between the upper conveyor belt segment 212 and the lower conveyor belt segment 213. The machine base 1 and the support platform 13 constitute the skeleton part of the transmission welding table device 100, which has the effect of stabilizing the entire system.

[0048] When the plurality of solar cells are transmitted on the transmission welding table device 100, they are fixed relative to the laying position 211 on the conveyor belt 21. In order to fix the solar cells on the conveyor belt 21, in this embodiment, the conveyor belt 21 is provided with a plurality of air holes 214 arranged at intervals in the front-to-back direction at the laying position 211. The transmission welding table device 100 also includes a support adsorption component 4 arranged between the upper conveyor belt section 212 and the support platform 13. A negative pressure adsorption chamber connected to the vacuum device is formed in the support adsorption component 4, and an adsorption hole connected to the negative pressure adsorption chamber is provided on the support adsorption component 4. 41, the adsorption holes 41 are used to connect with the air holes 214, and are used to adsorb and fix the solar cell sheets laid on the upper conveyor belt section 212. It should be noted that, when the conveyor belt 21 is moving relative to the support platform 13, some of the adsorption holes 41 and some of the air holes 214 are gradually in a closed state, but new parts of the adsorption holes 41 and some of the air holes 214 are gradually in a connected state, so that the solar cell sheets on one of the laying positions 211 are always in an adsorbed and fixed state, and the fixing method is flexible, will not damage the solar cell sheets, and has a better effect.

[0049] It should be noted that, in the technical solution of the present invention, the specific structural form of the supporting adsorption component 4 is not limited. For example, it can be a large adsorption plate 4a. In order to facilitate processing, multiple adsorption plates 4a can be set. Of course, the supporting adsorption component 4 can also be a combined structure, which works together to form the negative pressure adsorption chamber and so on. Specifically, in this embodiment, the supporting adsorption component 4 includes multiple adsorption plates 4a distributed along the left and right directions, and each of the adsorption plates 4a is hollow to be connected to the vacuum device to form a negative pressure adsorption chamber. Each of the adsorption plates 4a is provided with multiple adsorption holes 41. By separately processing the multiple adsorption plates 4a, it is also convenient to separately process the adsorption holes 41 on a single adsorption plate 4a, which is simple to process and convenient to save costs.

[0050] In this embodiment, the heating device includes a heating structure such as a heating tube or a heating rod for heating. In order to facilitate the welding of the solar cell by the welding device, it is necessary to monitor the temperature in the preheating temperature zone 11 and / or the welding temperature zone 14. After obtaining the actual temperature in the preheating temperature zone 11 and / or the welding temperature zone 14, it can be fed back to the heating device so as to adjust the heating power of the heating device to meet the requirements of the welding process. Specifically, the transmission welding table device 100 also includes a temperature sensing device installed on the machine base 1, and the temperature sensing device is set corresponding to the preheating temperature zone 11 and / or the welding temperature zone 14, and is used to monitor the temperature of the preheating temperature zone 11 and / or the welding temperature zone 14.

[0051] In the embodiment of the present invention, the specific cooling form of the cooling device 3 is not limited. For example, flowing medium cooling, such as water cooling, oil cooling, etc., can be adopted. In this embodiment, air cooling is adopted. Specifically, the support platform 13 is provided with air holes. The cooling device 3 includes a cooling fan 31. The cooling fan 31 is arranged under the support platform 13 to blow cold air into the air holes and dissipate the heat of the solar cell after welding. The fan cooling method has a simple structure and is easy to implement.

[0052] In the technical solution of the present invention, the cooling device 3 includes a heat sink 32, and the heat sink 32 is close to the solar cell after welding. In order to increase the heat dissipation area, in this embodiment, the heat sink 32 includes a heat sink provided on the lower end surface of the support platform 13 and a plurality of heat dissipation ribs 33 provided on the lower end surface of the heat sink and extending in the up and down directions. The cooling fan 31 is provided at the lower end of the plurality of heat dissipation ribs 33. The form of the plurality of heat dissipation ribs 33 increases the contact area between the heat sink 32 and the air, and has a better heat dissipation effect.

[0053] Furthermore, in order to increase the heat dissipation effect, in the present embodiment, a plurality of cooling fans 31 are provided, and a plurality of corresponding heat dissipation seats 32 are also provided, so that the heat dissipation device has a better heat dissipation effect.

[0054] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A transmission welding table device, the transmission welding table device is used for a solar cell welding machine, the solar cell welding machine welds and forms a plurality of solar cell strings, and adds interconnecting strips between the plurality of solar cell strings, characterized in that: The transmission welding station device comprises: The machine base forms a plurality of temperature zones arranged in the left and right directions, wherein the plurality of temperature zones include a preheating temperature zone, a welding temperature zone and a cooling temperature zone; A conveying device is arranged on the machine base, comprising a conveyor belt for conveying solar cells from left to right, wherein a plurality of laying positions distributed in a front-to-back direction are formed on the conveyor belt, each of the laying positions is used to lay a solar cell, and the conveyor belt allows the plurality of solar cells to pass through the preheating temperature zone and the welding temperature zone in sequence and then be delivered to the cooling temperature zone; a heating device, mounted on the machine base and arranged corresponding to the preheating temperature zone and / or the welding temperature zone, for heating the solar cell sheets passing through the preheating temperature zone and / or the welding temperature zone; and A cooling device, mounted on the machine base and arranged corresponding to the cooling temperature zone, for cooling the solar cell after welding; Corresponding to any of the temperature zones, three laying positions distributed along the front-rear direction are formed on the conveyor belt to lay three solar cells at the same time, and to convey the three solar cells along the left-right direction at the same time; The conveyor belt comprises an upper conveyor belt section located at the top and a lower conveyor belt section located at the bottom; The machine base includes a support platform located at the top, the support platform is extended in the left and right directions, and the support platform is located between the upper conveyor belt section and the lower conveyor belt section; The support platform is provided with a blowing hole; The cooling device comprises a cooling fan, which is arranged below the supporting platform and is used to blow cold air into the air holes and dissipate heat for the solar cell sheets after welding. The cooling fans are provided in plurality; The conveyor belt is provided with a plurality of air holes spaced apart in the front-rear direction at the laying position; The transmission welding table device also includes a support adsorption component arranged between the upper conveyor belt section and the support platform, a negative pressure adsorption chamber connected to the vacuum device is formed in the support adsorption component, and an adsorption hole connected to the negative pressure adsorption chamber is provided on the support adsorption component, and the adsorption hole is used to connect to the air vent, and is used to adsorb and fix the solar cell sheet laid on the upper conveyor belt section; The support adsorption assembly includes a plurality of adsorption plates distributed in the left and right directions, each of the adsorption plates is hollow and connected to the vacuum device to form a negative pressure adsorption chamber, and each of the adsorption plates is provided with a plurality of adsorption holes connected to the negative pressure adsorption chamber; The cooling device also includes a heat sink, which includes a heat sink provided at the lower end of the support platform and a plurality of heat sink ribs provided on the lower end surface of the heat sink and extending in the up-down direction; The cooling fan is arranged at the lower ends of the plurality of heat dissipation ribs.

2. The transmission welding station device according to claim 1, characterized in that: The transmission welding table device also includes a temperature sensing device installed on the machine base, and the temperature sensing device is set corresponding to the preheating temperature zone and / or welding temperature zone, and is used to monitor the temperature of the preheating temperature zone and / or welding temperature zone.

3. A solar cell welding machine, characterized in that: It comprises the transmission welding table device as described in any one of claims 1 to 2.

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