TOPCon battery chain type machine

Abstract

The utility model discloses a TOPCon battery chain type machine which comprises a plurality of main tanks, a plurality of HF tanks and a connecting assembly, the main tank is correspondingly communicated with the HF tank; the connecting assembly comprises a plurality of fixed discharge valves and a communicating pipe; wherein the adjacent HF tanks are communicated through a communicating pipe; the fixed discharge valves are arranged at the two ends of the communicating pipe and are close to the corresponding HF tanks. According to the utility model, the consumption of a single HF tank can be effectively reduced, the retentivity is durable and stable, the production cost is reduced, the structure is simple, the improvement cost is low, and the effect is remarkable.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component detection, in particular to a TOPCon battery chain machine. Background Art

[0002] Currently, the production process of TOPCon (Tunnel Oxide Passivated Contact) cells (a type of solar cell technology based on the principle of selective carriers) using BSG (Back Surface Field) chain machines consumes a significant amount of acid per cell, resulting in high production costs. To address this issue, existing technologies typically reduce HF consumption per cell by adjusting roller level, water film size, and replacing deformed rollers and brackets to control water film shedding. However, this approach is not only unstable and requires frequent adjustment cycles, but also prone to rebounding HF consumption reduction and poor retention.

[0003] Therefore, it is urgent to propose a TOPCon battery chain machine to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to propose a TOPCon battery chain machine, which can effectively reduce the single-chip consumption of the HF slot, maintain long-lasting stability, reduce production costs, and has not only a simple structure and low transformation cost, but also significant effects.

[0005] In order to solve the above technical problems, the utility model provides a TOPCon battery chain machine, comprising a plurality of main slots, a plurality of HF slots and a connecting assembly;

[0006] The main tank is correspondingly connected to the HF tank;

[0007] The connection assembly includes a plurality of fixed-discharge valves and connecting pipes; wherein the adjacent HF tanks are connected through the connecting pipes; the fixed-discharge valves are arranged at both ends of the connecting pipes and close to the corresponding HF tanks.

[0008] Furthermore, the connecting pipe includes a plurality of pipes connected in sequence in a fixed row.

[0009] Furthermore, adjacent fixed-row pipes are connected via elbow clamps.

[0010] Furthermore, the fixed-row pipes include PVDF pipes.

[0011] Furthermore, it also includes multiple drainage pipes, multiple constant pressure tanks, multiple circulation pipelines, multiple circulation pumps and multiple HF magnetostrictive liquid level meters;

[0012] The main tank is connected to the HF tank through a drain pipe; the constant pressure tank is installed on the main tank to maintain pressure stability; the two ends of the circulation pipeline are respectively connected to the main tank and the HF tank; the circulation pump is installed on the circulation pipeline; the HF magnetostrictive liquid level meter is installed on the constant pressure tank to measure the liquid level in the HF tank.

[0013] Furthermore, a drain valve is provided on the drain pipe.

[0014] Furthermore, it also includes an HF direct-compensation pipe and a pure water pipe; the HF direct-compensation pipe and the pure water pipe are installed on the main tank.

[0015] Furthermore, a pure water pneumatic valve is provided on the pure water pipe.

[0016] Furthermore, a direct-compensation pipe valve is provided on the HF direct-compensation pipe.

[0017] Furthermore, the HF tank is provided with a plurality of liquid level sensors connected to the HF magnetostrictive liquid level meter.

[0018] Through the above technical solution, the utility model has the following beneficial effects:

[0019] By arranging multiple main tanks, multiple HF tanks, and connecting components, the main tanks and HF tanks are connected to each other; the connecting components include multiple fixed-discharge valves and connecting pipes; adjacent HF tanks are connected by connecting pipes; and the fixed-discharge valves are arranged at both ends of the connecting pipes and close to the corresponding HF tanks. This device can effectively reduce the consumption of single HF tanks, maintain long-term stability, and reduce production costs. It has a simple structure, low modification cost, and significant effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the TOPCon battery chain machine in one embodiment of the present utility model.

[0021] In the figure, 11, constant pressure tank; 12, circulation pipeline; 13, circulation pump; 14, HF magnetostrictive liquid level meter; 15, HF direct feed pipe; 151, direct feed pipe valve; 16, pure water pipe; 161, pure water pneumatic valve; 2, main tank; 3, HF tank; 41, fixed drain pipe; 42, fixed drain valve; 5, liquid level sensor; 6, drain pipe; 7, drain valve; 8, main drain pipe; 9, main drain valve. DETAILED DESCRIPTION

[0022] The following is a more detailed description of a TOPCon battery chain machine of the present invention, with reference to the accompanying drawings. A preferred embodiment of the present invention is shown. It should be understood that those skilled in the art may modify the present invention described herein while still achieving the beneficial effects of the present invention. Therefore, the following description should be understood as a general guide for those skilled in the art and not as a limitation of the present invention.

[0023] The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0024] like Figure 1 As shown, the embodiment of the present invention provides a simple and practical TOPCon battery chain machine, including multiple main slots 2, multiple HF slots 3 and connecting components.

[0025] Specifically, the main tank 2 is connected to the HF tank 3 accordingly; the connection assembly includes multiple fixed-discharge valves 42 and connecting pipes; wherein adjacent HF tanks 3 are connected through the connecting pipes; the fixed-discharge valves 42 are arranged at both ends of the connecting pipes and close to the corresponding HF tank 3.

[0026] More specifically, the connecting pipe includes a plurality of pipes 41 connected in sequence.

[0027] In one embodiment, taking two main tanks 2 and two HF tanks 3 as an example, one of the HF tanks 3 is connected to the other HF tank 3 via a connecting pipe; the fixed discharge valve 42 is disposed on the fixed discharge pipe 41; one of the fixed discharge valves 42 is located near one of the HF tanks 3; the other fixed discharge valve 42 is located near the other HF tank 3. By connecting the fixed discharge pipe 41 of HF tank #1 (one of the HF tanks 3 is defined as HF tank #1) to the fixed discharge pipe 41 of HF tank #2 (the other HF tank 3 is defined as HF tank #1) via a manual valve (fixed discharge valve 42), the acid discharged from the fixed discharge pipe of HF tank #1 can meet the acid concentration requirement of HF tank #2, thereby effectively reducing the single-wafer consumption of HF. By reducing the amount of HF used, the raw material cost in the production process is directly reduced.

[0028] In this embodiment, the HF tank 3 is provided with a main discharge pipe 8, which is equipped with a main discharge valve 9. The provision of the main discharge valve 9 allows the operator to precisely control the discharge of the acid solution from the HF tank 3, ensuring acid recovery and reuse and reducing waste. The main discharge pipe 8 and the main discharge valve 9 allow the concentration of the acid solution in the HF tank 3 to be adjusted to meet different production requirements. When the acid solution in the HF tank 3 needs to be discharged, the main discharge valve 9 safely controls the discharge process, preventing leakage or overflow of the acid solution and ensuring safe operation.

[0029] Preferably, adjacent fixed-row pipes 41 are connected via elbow clamps. Using elbow clamps can simplify the installation process of fixed-row pipes 41, making the pipeline layout more flexible and facilitating construction and maintenance. The use of elbow clamps enhances the stability of pipeline connections and reduces the risk of leakage caused by improper pipeline connections. Elbow clamps allow pipelines to be diverted in different directions, making the layout of the entire pipeline system more compact and reasonable. Elbow clamps can be selected at different angles and types as needed to accommodate different pipeline layout requirements.

[0030] Preferably, the fixed pipe 41 comprises a PVDF pipe. PVDF pipes are highly corrosion-resistant and can withstand attack by a variety of chemicals, including hydrofluoric acid (HF), making them suitable for handling corrosive liquids. PVDF can withstand high temperatures and is suitable for processes that may require operation at higher temperatures. The surface of PVDF pipes is less susceptible to adhesion, helping to reduce frictional losses during fluid flow and facilitating cleaning and maintenance.

[0031] The number, size and material of the fixed row pipes 41 can be set according to actual needs.

[0032] In this embodiment, multiple drainage pipes 6 are also included. The main tank 2 is connected to the HF tank 3 via the drainage pipes 6. The provision of the drainage pipes 6 allows the liquid in the main tank 2 to flow directly into the HF tank 3, reducing intermediate steps and improving the efficiency of the entire drainage process. The drainage pipes 6 enable more precise control of the liquid flow from the main tank 2 to the HF tank 3, facilitating adjustment and optimization of the production process. This direct connection reduces the chance of liquid coming into contact with the outside world during the transfer process, reducing the risk of contamination. The drainage pipes 6 can be configured to different lengths and diameters as needed to accommodate different production requirements and spatial layouts.

[0033] In one embodiment, a drain valve 7 is provided on the drain pipe 6 to prevent accidental discharge of liquid in an emergency. For example, in an emergency, the drain valve 7 can quickly cut off the drainage path to prevent the accident from escalating. The drain valve 7 also prevents liquid backflow caused by pressure changes when closed, thus protecting the system.

[0034] In a specific example, this embodiment further includes a plurality of constant pressure tanks 11 , a plurality of circulation pipelines 12 , a plurality of circulation pumps 13 and a plurality of HF magnetostrictive liquid level meters 14 .

[0035] Specifically, the constant pressure tank 11 is installed on the main tank 2 to maintain stable pressure. The two ends of the circulation pipeline 12 are connected to the main tank 2 and the HF tank 3 respectively. The circulation pump 13 is installed on the circulation pipeline 12. The HF magnetostrictive level meter 14 is installed on the constant pressure tank 11 to measure the liquid level in the HF tank 3. The configuration of the circulation pipeline 12 allows liquid to circulate between the main tank 2 and the HF tank 3, helping to maintain the uniformity and stability of the liquid within the tanks. The HF magnetostrictive level meter 14, installed on the constant pressure tank 11, can accurately measure the liquid level in the HF tank 3, providing accurate liquid level data for the production process. The constant pressure tank 11, installed on the main tank 2, maintains stable pressure within the system, ensuring measurement accuracy and uniform liquid flow. The circulation pump 13 is installed on the circulation pipeline 12 to provide the necessary power for the circulation and ensure continuous flow of liquid within the system.

[0036] In this embodiment, the constant pressure tank 11 is connected to the main tank 2 via a connecting pipe; a control valve is provided on the connecting pipe. This control valve flexibly controls the flow of liquid between the constant pressure tank 11 and the main tank 2, facilitating regulation of system pressure and liquid level. Adjustment of the control valve allows for rapid response to pressure changes during the production process, maintaining stable system operation.

[0037] Furthermore, this embodiment includes an HF direct feed pipe 15 and a pure water pipe 16; these are installed on the main tank 2. The installation of the HF direct feed pipe 15 and the pure water pipe 16 allows for rapid replenishment of HF or pure water to the system to adjust the acid concentration or dilute it. The rational layout of the HF direct feed pipe 15 and the pure water pipe 16 helps reduce operational risks, such as acid leaks or spills.

[0038] Preferably, the pure water pipe 16 is provided with a pure water pneumatic valve 161, which can quickly cut off the fluid supply in an emergency, thereby improving the safety of the system.

[0039] Preferably, a direct-supply pipe valve 151 is provided on the HF direct-supply pipe 15. The pure water pneumatic valve 161 and the direct-supply pipe valve 151 allow the operator to precisely control the flow of pure water and HF, ensuring accurate regulation of the acid concentration and liquid level in the system.

[0040] In one embodiment, the HF tank 3 is equipped with multiple liquid level sensors 5 connected to the HF magnetostrictive liquid level meter 14. The use of multiple liquid level sensors 5 provides multiple measurement points, helping to improve the accuracy and reliability of liquid level measurement. Multiple sensors provide redundancy; even if one sensor fails, the others can still function normally, ensuring stable system operation. The liquid level sensors 5 can monitor liquid level changes in the HF tank 3 in real time, providing real-time data to the control system for timely adjustments.

[0041] In this embodiment, taking two main tanks 2, two HF tanks 3, two drainage pipes 6, two constant pressure tanks 11, two circulation lines 12, two circulation pumps 13, and two HF magnetostrictive level gauges 14 as an example, when the HF liquid level in one HF tank 3 (HF tank #1) exceeds a predetermined level (e.g., 95L), it is automatically drained. Since traditional self-draining means direct drainage, this can easily lead to liquid waste. In this embodiment, however, one HF tank 3 (HF tank #1) is directly connected to another HF tank 3 (HF tank #2) via a fixed drainage pipe 41. Through multiple experimental tests, it was found that the other HF tank 3 does not need to be self-replenished, and the acid concentration of the other HF tank 3 can be maintained by relying solely on the amount of acid discharged in a directional manner from one HF tank 3. For example, the experimental data is as follows: the traditional HF consumption is 18.5L / 10,000 pcs, while the HF consumption of this embodiment is 4.7L / 10,000 pcs. Therefore, from the data point of view, this embodiment can reduce the acid consumption of a single piece from the original 18.5L / 10000pcs to 4.7L / 10000pcs, which can improve the durability of the consumption reduction effect.

[0042] In this embodiment, during the production process, the liquid level in the HF tank 3 is monitored by an HF magnetostrictive liquid level measuring device. Control elements such as the drain valve 7, the fixed drain valve 42, the pure water pneumatic valve 161, and the direct replenishment pipe valve 151 enable precise replenishment and discharge of HF liquid and pure water, ensuring that the HF liquid level in the HF tank 3 remains at an optimal operating state. Conventional silicon wafers automatically replenish 1000 ml of HF liquid for every 500 wafers passing through one HF tank 3, and 700 ml of HF liquid for every 500 wafers passing through the other HF tank 3, thereby ensuring stable conductivity in both HF tanks 3. In contrast, the silicon wafers in this embodiment automatically replenish 400 ml of HF liquid for every 500 wafers passing through one HF tank 3, but do not require self-replenishment when passing through the other HF tank 3. This ensures that the conductivity of the two HF tanks 3 remains stable at 430 s / m and 390 s / m, respectively.

[0043] In other embodiments, more main tanks 2, HF tanks 3, drainage pipes 6, constant pressure tanks 11, circulation pipelines 12, circulation pumps 13, and HF magnetostrictive liquid level gauges 14 may be included. For example, when there are three main tanks 2, three HF tanks 3, three drainage pipes 6, three constant pressure tanks 11, three circulation pipelines 12, three circulation pumps 13, and three HF magnetostrictive liquid level gauges 14 (the connection method between the main tanks 2, HF tanks 3 and the drainage pipes 6, constant pressure tanks 11, circulation pipelines 12, circulation pumps 13, and HF magnetostrictive liquid level gauges 14 can be referred to the above description), two connecting pipes may be provided, the first HF tank 3 being connected to the second HF tank 3 via one of the connecting pipes, and the second HF tank 3 being connected to the third HF tank 3 via the other connecting pipe; or the two connecting pipes may be integrally formed so that the three HF tanks 3 are interconnected. Based on the above embodiments, those skilled in the art can clearly understand that there are more connection modes for the main tank 2, HF tank 3, drain pipe 6, constant pressure tank 11, circulation pipeline 12, circulation pump 13 and HF magnetostrictive liquid level meter 14. This utility model does not describe this in detail.

[0044] In summary, the TOPCon battery chain machine proposed in this utility model has the following advantages:

[0045] By arranging multiple main tanks, multiple HF tanks, and connecting components, the main tanks and HF tanks are connected to each other; the connecting components include multiple fixed-discharge valves and connecting pipes; adjacent HF tanks are connected by connecting pipes; and the fixed-discharge valves are arranged at both ends of the connecting pipes and close to the corresponding HF tanks. This device can effectively reduce the consumption of single HF tanks, maintain long-term stability, and reduce production costs. It has a simple structure, low modification cost, and significant effects.

[0046] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A TOPCon battery chain machine, characterized in that: It includes multiple main tanks, multiple HF tanks and connecting components; The main tank is correspondingly connected to the HF tank; The connection assembly includes a plurality of fixed-discharge valves and connecting pipes; wherein the adjacent HF tanks are connected through the connecting pipes; the fixed-discharge valves are arranged at both ends of the connecting pipes and close to the corresponding HF tanks.

2. The TOPCon battery chain machine according to claim 1, characterized in that: The connecting pipe includes a plurality of pipes connected in sequence in a fixed row.

3. The TOPCon battery chain machine according to claim 2, characterized in that: Adjacent fixed-row pipes are connected via elbow clamps.

4. The TOPCon battery chain machine according to claim 2, characterized in that: The fixed pipe arrangement includes a PVDF pipe.

5. The TOPCon battery chain machine according to claim 1, characterized in that: It also includes multiple drainage pipes, multiple constant pressure tanks, multiple circulation pipelines, multiple circulation pumps and multiple HF magnetostrictive liquid level meters; The main tank is connected to the HF tank through a drain pipe; the constant pressure tank is installed on the main tank to maintain pressure stability; the two ends of the circulation pipeline are respectively connected to the main tank and the HF tank; the circulation pump is installed on the circulation pipeline; the HF magnetostrictive liquid level meter is installed on the constant pressure tank to measure the liquid level in the HF tank.

6. The TOPCon battery chain machine according to claim 5, characterized in that: The drain pipe is provided with a drain valve.

7. The TOPCon battery chain machine according to claim 5, characterized in that: It also includes an HF direct-compensation pipe and a pure water pipe; the HF direct-compensation pipe and the pure water pipe are installed on the main tank.

8. The TOPCon battery chain machine according to claim 7, characterized in that: A pure water pneumatic valve is provided on the pure water pipe.

9. The TOPCon battery chain machine according to claim 7, characterized in that: The HF direct-compensation pipe is provided with a direct-compensation pipe valve.

10. The TOPCon battery chain machine according to claim 5, characterized in that: The HF tank is provided with a plurality of liquid level sensors connected to the HF magnetostrictive liquid level meter.

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