Heating plate and photovoltaic laminating machine

Abstract

The utility model relates to the technical field of heating plates and photovoltaic laminating machines, and provides a heating plate which comprises a plate body, the interior of the plate body is of a hollow structure, an electric heating pipe is fixedly connected to the middle of the interior of the plate body, and a water inlet pipe and a water outlet pipe are arranged at the two ends of the plate body respectively. The water outlet pipe is fixedly connected with a plurality of water outlet branch pipes, the ends, away from the water outlet pipe, of the water outlet branch pipes are fixedly connected with the plate body, and the ends, away from the water outlet pipe, of the water outlet branch pipes are fixedly connected with the plate body. The side, away from the water inlet branch pipe, of the water inlet pipe is fixedly connected with an electromagnetic valve, and the side, away from the water inlet branch pipe, of the water outlet pipe is fixedly connected with an electromagnetic valve. According to the technical scheme, the problems that in the prior art, a heating plate is uneven in heating, and the packaging quality of a photovoltaic module is affected are solved; and the cooling speed of the heating plate is slow, so that the overall production efficiency is influenced.

Description

Technical Field

[0001] The utility model relates to the technical fields of heating plates and photovoltaic laminators, and specifically, to heating plates and photovoltaic laminators. Background Art

[0002] A photovoltaic laminator is an important device for manufacturing photovoltaic modules. Its main function is to stack materials such as photovoltaic cells, EVA (ethylene-vinyl acetate) films, and backsheets together, and through heating and vacuum pressure, make each layer of materials tightly combined to form an integrated photovoltaic module. The working process of the photovoltaic laminator includes steps such as loading, vacuum pumping, heating, pressurizing, cooling, and unloading.

[0003] In a photovoltaic laminator, the heating plate is one of the key components, mainly used to provide heat to ensure that each layer of materials of the photovoltaic module can be melted and combined at an appropriate temperature. The performance of the heating plate directly affects the encapsulation quality and production efficiency of the photovoltaic module.

[0004] Existing heating plates usually use electric heating tubes for heating. The electric heating tubes generate heat through resistance and transfer the heat energy to the heating plate. During the heating process, the area around the electric heating tubes is heated first, and then the heat is transferred to other positions of the heating plate through heat conduction. This heat conduction method easily leads to uneven temperature distribution of the heating plate, thereby affecting the encapsulation quality of the photovoltaic module. And due to large thermal inertia, the cooling process is slow, which affects the cooling speed of the photovoltaic module, and further affects the overall production efficiency. Summary of the Utility Model

[0005] The utility model provides a heating plate and a photovoltaic laminator, which solve the problems in the related art that the heating of the heating plate is uneven, affecting the encapsulation quality of the photovoltaic module; and the cooling speed of the heating plate is slow, affecting the overall production efficiency.

[0006] The technical solution of the utility model is as follows:

[0007] A heating plate, comprising a plate body. The interior of the plate body is a hollow structure. An electric heating tube is fixedly connected in the middle of the interior of the plate body. A first interval is provided between the electric heating tube and the other side walls of the plate body except for the side wall fixed to the plate body. A water inlet pipe and a water outlet pipe are respectively provided at both ends of the plate body. The water inlet pipe is fixedly connected with a plurality of water inlet branch pipes. The end of the water inlet branch pipe far from the water inlet pipe is fixedly connected to the plate body. Both ends of the water inlet branch pipe are communicated with the water inlet pipe and the plate body respectively. The plurality of water inlet branch pipes are linearly arranged along the plate body. The water outlet pipe is fixedly connected with a plurality of water outlet branch pipes. The end of the water outlet branch pipe away from the water outlet pipe is fixedly connected to the plate body. Both ends of the water outlet branch pipe are communicated with the water outlet pipe and the plate body respectively. The plurality of water outlet branch pipes are linearly arranged along the plate body. A solenoid valve is fixedly connected to the side of the water inlet pipe far from the water inlet branch pipe, and a solenoid valve is fixedly connected to the side of the water outlet pipe far from the water inlet branch pipe.

[0008] Further, a plurality of first support ribs are fixedly connected to both sides of the plate body parallel to the water inlet pipe and the water outlet pipe. The first support ribs are located on the inner wall of the plate body. The plurality of first support ribs are linearly arranged along the plate body. Both ends of the first support ribs extend towards the water outlet pipe and the water inlet pipe respectively. A second interval is provided between both ends of the first support ribs and the water inlet pipe and the water outlet pipe. The inside of the first support rib is a hollow structure, and communication openings are provided at both ends of the first support rib.

[0009] Further, a plurality of exchange openings are provided on the side wall of the first support rib. The plurality of exchange openings are linearly arranged along the first support rib.

[0010] Further, a plurality of second support ribs are fixedly connected to the side surface of the plate body perpendicular to the water inlet pipe and the water outlet pipe. The second support ribs are located inside the plate body. Both ends of the second support ribs extend to both sides of the plate body parallel to the water inlet pipe and the water outlet pipe respectively.

[0011] Further, a partition head is provided at the connection between the electric heating pipe and the plate body. The partition head is fixedly connected to the plate body, and the electric heating pipe is located in the middle of the partition head.

[0012] A photovoltaic laminator includes the heating plate described above.

[0013] The working principle and beneficial effects of the present utility model are as follows:

[0014] In the present utility model, the inside of the plate body is set as a hollow structure, and the electric heating pipe is arranged in the middle of the plate body. Cold water is injected into the plate body through the water inlet pipe, so that the plate body is filled with cold water. The cold water is heated by the electric heating pipe, and the heated water then transfers the heat to the plate body. This design avoids local overheating, improves the heating uniformity, ensures that all parts of the photovoltaic module are heated evenly, and improves the encapsulation quality. When it is necessary to cool the heating plate, the water inlet pipe continuously injects cold water into the plate body, and at the same time, the water outlet pipe discharges the hot water in the plate body, thereby achieving the effect of rapid cooling; the water inlet branch pipe shunts the water in the water inlet pipe, increases the water inlet positions, thereby improving the water inlet speed and the water inlet area; the water outlet branch pipe shunts the water in the plate body, increases the water outlet positions, thereby increasing the water outlet area, and avoiding the situation that the water in a local area of the plate body cannot be discharged; through the cooperation of the water inlet branch pipe and the water outlet branch pipe, the water in the plate body can be quickly replaced, so as to achieve the function of rapid cooling. The opening and closing of the water inlet pipe and the water outlet pipe are controlled by the solenoid valve, thereby achieving stable heating and rapid cooling. The present utility model solves the problems in the related art that the heating plate has uneven heating, which affects the encapsulation quality of the photovoltaic module; and the heating plate has a slow cooling speed, which affects the overall production efficiency. Description of the Drawings

[0015] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] Figure 1 Schematic diagram of the heating plate structure in the present utility model;

[0017] Figure 2 Front view of the heating plate in the present utility model;

[0018] Figure 3 is Figure 2 Cross-sectional view taken along line A-A of

[0019] Figure 4 is Figure 3 Cross-sectional view taken along line B-B of

[0020] In the figure: 1, plate body; 2, water inlet pipe; 3, water outlet pipe; 4, electric heating pipe; 5, first support rib; 6, second support rib; 21, water inlet branch pipe; 23, solenoid valve; 31, water outlet branch pipe; 41, partition head; 51, exchange opening. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0022] As Figures 1 to 4 shown, this embodiment proposes a heating plate, including a plate body 1. The interior of the plate body 1 is a hollow structure. An electric heating pipe 4 is fixedly connected in the middle of the interior of the plate body 1. A first interval is provided between the electric heating pipe 4 and the other side walls of the plate body 1 except for the side wall fixed to the plate body 1. A water inlet pipe 2 and a water outlet pipe 3 are respectively arranged at both ends of the plate body 1. The water inlet pipe 2 is fixedly connected with a plurality of water inlet branch pipes 21. The end of the water inlet branch pipe 21 far from the water inlet pipe 2 is fixedly connected to the plate body 1. Both ends of the water inlet branch pipe 21 are respectively communicated with the water inlet pipe 2 and the plate body 1. A plurality of water inlet branch pipes 21 are linearly arranged along the plate body 1. The water outlet pipe 3 is fixedly connected with a plurality of water outlet branch pipes 31. The end of the water outlet branch pipe 31 away from the water outlet pipe 3 is fixedly connected to the plate body 1. Both ends of the water outlet branch pipe 31 are respectively communicated with the water outlet pipe 3 and the plate body 1. A plurality of water outlet branch pipes 31 are linearly arranged along the plate body 1. A solenoid valve 23 is fixedly connected to the side of the water inlet pipe 2 away from the water inlet branch pipe 21. A solenoid valve 23 is fixedly connected to the side of the water outlet pipe 3 away from the water inlet branch pipe 21.

[0023] The plate body 1 is the main structure of the entire heating plate, providing a support and heat conduction foundation. The interior of the plate body 1 is designed as a hollow structure to facilitate the arrangement of the electric heating tubes 4 and the distribution of the heat-conducting water. The electric heating tubes 4 are the core heating elements of the heating system. They generate heat through resistance and convert electrical energy into heat energy. The electric heating tubes 4 do not directly contact the other side walls of the plate body 1. By heating the water, the water then transfers the heat to the plate body 1 to achieve uniform heating. This design avoids local overheating, improves the heating uniformity, ensures that all parts of the photovoltaic module are evenly heated, and enhances the encapsulation quality. The water inlet pipe 2 is responsible for introducing cold water into the interior of the plate body 1, and the water outlet pipe 3 is responsible for discharging the hot water from the plate body 1. The water inlet pipe 2 and the water outlet pipe 3 are respectively located at both ends of the plate body 1 to realize the inflow and outflow circulation of the water. The design of the water inlet pipe 2 and the water outlet pipe 3 ensures the circulating flow of the water inside the plate body 1. When the heating plate needs to be cooled, the heat generated by the electric heating tubes 4 and the heat on the plate body 1 are carried away through the exchange of cold and hot water. The water inlet branch pipes 21 divide the water in the water inlet pipe 2, so that the water in the water inlet pipe 2 enters the plate body 1 from different positions through different water inlet branch pipes 21, and then the water is evenly distributed inside the plate body 1, which can effectively reduce the occurrence of water change blind spots and improve the water inlet speed. The water outlet branch pipes 31 divide the water inside the plate body 1, increasing the water outlets inside the plate body 1, and then increasing the water outlet area, so as to achieve the effect of rapid water change and can effectively avoid the occurrence of water change blind spots inside the plate body 1. The solenoid valve 23 is installed at the far ends of the water inlet pipe 2 and the water outlet pipe 3 to control the inflow and outflow of the water. By opening and closing the solenoid valve 23, precise control of the water flow can be achieved. The control of the solenoid valve 23 makes the opening and closing of the water flow more flexible. It can precisely control the water flow according to the heating and cooling requirements, realizing a rapid switching between the heating and cooling processes, improving the production efficiency, and ensuring the rapid cooling of the photovoltaic module.

[0024] In this embodiment, a number of first support ribs 5 are fixedly connected to both sides of the plate body 1 parallel to the water inlet pipe 2 and the water outlet pipe 3. The first support ribs 5 are located on the inner wall of the plate body 1. A number of first support ribs 5 are linearly arranged along the plate body 1. Both ends of the first support ribs 5 extend towards the water outlet pipe 3 and the water inlet pipe 2 respectively. A second interval is provided between both ends of the first support ribs 5 and the water inlet pipe 2 and the water outlet pipe 3. The interior of the first support ribs 5 is a hollow structure, and communication openings are provided at both ends of the first support ribs 5. The first support ribs 5 play a role in supporting and stabilizing the structure. Its internal hollow structure enables the cooling water to flow through the inside of the support ribs through the communication openings provided at both ends. The first support ribs 5 enhance the structural strength of the heating plate and prevent the heating plate from deforming during the process of thermal expansion and contraction. The hollow structure and the design of the communication openings ensure that the cooling water can be evenly distributed throughout the interior of the plate body 1.

[0025] In this embodiment, a plurality of exchange openings 51 are provided on the side wall of the first support rib 5, and the plurality of exchange openings 51 are linearly arranged along the first support rib 5. The exchange openings 51 are for the cooling water to pass through, and the cooling water circulates inside the support rib and the plate body 1 through these openings. The exchange openings 51 achieve efficient exchange and heat transfer of the water flow, further improving the uniformity of heating and cooling.

[0026] In this embodiment, a plurality of second support ribs 6 are fixedly connected to the side surface of the plate body 1 perpendicular to the water inlet pipe 2 and the water outlet pipe 3. The second support ribs 6 are located inside the plate body 1, and both ends of the second support ribs 6 extend to both sides of the plate body 1 parallel to the water inlet pipe 2 and the water outlet pipe 3. The second support ribs 6 are used to provide additional structural support, and the extension of both ends of the second support ribs 6 further enhances the rigidity and stability of the plate body 1.

[0027] In this embodiment, a partition head 41 is provided at the connection between the electric heating tube 4 and the plate body 1. The partition head 41 is fixedly connected to the plate body 1, and the electric heating tube 4 is located in the middle of the partition head 41. The partition head 41 is used to isolate and fix the connection between the electric heating tube 4 and the plate body 1, ensuring that the electric heating tube 4 is stably fixed in the middle of the plate body 1. The partition head 41 is fixedly connected to the plate body 1, so that the electric heating tube 4 is located in the middle of the partition head 41, ensuring that the electric heating tube 4 does not directly contact the side wall of the plate body 1 during heating, preventing local overheating.

[0028] A photovoltaic laminator includes the above-mentioned heating plate.

[0029] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heating plate, comprising a plate body (1), characterized in that: The plate body (1) has a hollow structure inside, an electric heating pipe (4) is fixedly connected in the middle of the plate body (1), and a first spacer is provided between the electric heating pipe (4) and the other side walls of the plate body (1) except for the side wall fixed to the plate body (1). The two ends of the plate body (1) are respectively provided with a water inlet pipe (2) and a water outlet pipe (3), the water inlet pipe (2) is fixedly connected to a plurality of water inlet branches (21), one end of the water inlet branch (21) away from the water inlet pipe (2) is fixedly connected to the plate body (1), and the two ends of the water inlet branch (21) are respectively connected to the water inlet pipe (2) and the plate body (1), and the plurality of water inlet branches (21) are connected to the water inlet pipe (2) and the plate body (1). The water inlet branches (21) are arranged linearly along the plate body (1); the water outlet pipe (3) is fixedly connected to a plurality of water outlet branches (31); one end of the water outlet branch (31) away from the water outlet pipe (3) is fixedly connected to the plate body (1); both ends of the water outlet branch (31) are respectively connected to the water outlet pipe (3) and the plate body (1); the plurality of water outlet branches (31) are arranged linearly along the plate body (1); a side of the water inlet pipe (2) away from the water inlet branch (21) is fixedly connected to a solenoid valve (23); and a side of the water outlet pipe (3) away from the water inlet branch (21) is fixedly connected to a solenoid valve (23).

2. The heating plate according to claim 1, characterized in that A plurality of first support ribs (5) are fixedly connected to both sides of the plate body (1) parallel to the water inlet pipe (2) and the water outlet pipe (3); the first support ribs (5) are located on the inner wall of the plate body (1); the plurality of first support ribs (5) are linearly arranged along the plate body (1); the two ends of the first support rib (5) extend toward the water outlet pipe (3) and the water inlet pipe (2) respectively; a second gap is provided between the two ends of the first support rib (5) and the water inlet pipe (2) and the water outlet pipe (3); the interior of the first support rib (5) is a hollow structure; and the two ends of the first support rib (5) are provided with communicating openings.

3. The heating plate according to claim 2, characterized in that The side wall of the first supporting rib (5) is provided with a plurality of exchange openings (51), and the plurality of exchange openings (51) are linearly arranged along the first supporting rib (5).

4. The heating plate according to claim 1, characterized in that The plate body (1) is fixedly connected to a plurality of second support ribs (6) at sides perpendicular to the water inlet pipe (2) and the water outlet pipe (3); the second support ribs (6) are located inside the plate body (1); and the two ends of the second support ribs (6) extend to two sides of the plate body (1) parallel to the water inlet pipe (2) and the water outlet pipe (3).

5. The heating plate according to claim 1, characterized in that A dividing head (41) is provided at the connection between the electric heating tube (4) and the plate body (1); the dividing head (41) is fixedly connected to the plate body (1); and the electric heating tube (4) is located in the middle of the dividing head (41).

6. A photovoltaic laminator, characterized in that it comprises the heating plate according to any one of claims 1 to 5.

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