Loading device for battery pieces in LPCVD (Low Pressure Chemical Vapor Deposition) process

Abstract

The utility model relates to the technical field of battery piece feeding, and provides an LPCVD (Low Pressure Chemical Vapor Deposition) process battery piece feeding device which comprises a quartz boat and two boat top tooth bases fixed at the bottom of the quartz boat, and transmission mechanisms for transmitting battery pieces are arranged on the side surfaces of the two boat top tooth bases. The top of the transmission mechanism is provided with an auxiliary assembly used for correcting the battery pieces which are combined in a front-to-front mode. According to the utility model, automatic fragments can be effectively reduced, human intervention can be effectively reduced, battery piece fragments and reworked pieces caused by automatic blocking can be effectively reduced, so that the overall process yield of solar batteries is improved, the smoothness of a machine table is greatly improved, and the improvement of productivity is greatly facilitated; the battery piece correcting and centering device can correct and center the battery pieces in the transmission process of the battery pieces, the possibility that the battery pieces are clamped in the transmission process can be further reduced, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery chip feeding, and specifically, to a feeding device for battery chips in the LPCVD process. Background Art

[0002] With the increasing global demand for renewable energy, solar energy, as a clean and infinite energy source, is being applied more and more widely. Product models are also various. To meet market demands, improve product yield, and reduce the company's non-silicon costs have also become an essential part.

[0003] In the TOPCon process, in the automation of the LPCVD process, battery chips are merged face-to-face and placed in a quartz boat that has been lowered. After the inserter combines the chips, the edge opening is relatively large when two battery chips are combined, resulting in frequent jamming of the chips in the quartz boat during feeding and a relatively high abnormal fragmentation rate. The main purpose of this hardware transformation is to reduce fragmentation in the LP process automation. Therefore, a feeding device for battery chips in the LPCVD process is needed. Summary of the Utility Model

[0004] To overcome the deficiencies of the prior art, the utility model provides a feeding device for battery chips in the LPCVD process, which solves the technical problems of imperfect structure, low compatibility, and the impact on the fragmentation rate and indicators in the prior art.

[0005] The technical solution of the utility model is as follows: A feeding device for battery chips in the LPCVD process includes a quartz boat and two boat top tooth bases fixed at the bottom of the quartz boat. A transmission mechanism for transporting battery chips is arranged on the sides of the two boat top tooth bases. A secondary positioning component for correcting the face-to-face merged battery chips is arranged on the top of the transmission mechanism;

[0006] The secondary positioning component includes two correction plates symmetrically arranged on the top of the transmission mechanism. Rotating shafts are fixedly connected to the tops of the two correction plates. The top ends of the rotating shafts are rotatably connected to mounting frames. A torsion spring is sleeved on the outer wall of the rotating shaft, and the two ends of the torsion spring are fixedly connected to the correction plate and the mounting frame respectively.

[0007] Preferably, a leveling plate is arranged at the right end of the correction plate, and a leveling groove for making the correction plate perpendicular to the leveling plate is formed on the surface of the leveling plate.

[0008] Preferably, a strengthening plate is fixedly connected to the inner wall of the leveling groove, and the inner wall of the strengthening plate is flush with the side surface of the correction plate.

[0009] Preferably, a rotation limiting component for limiting the rotation angle of the leveling plate is arranged at the left end of the correction plate. The rotation limiting component includes an extension frame fixed on the right side of the mounting frame. A fitting plate is fixedly connected to the end of the extension frame away from the mounting frame. The left end of the correction plate is beveled and fits with the front side of the fitting plate.

[0010] Preferably, a limiting plate is fixedly connected to one side of the flush plate away from the flush groove, and smooth flexible partitions for reducing friction are fixedly connected to the front sides of the limiting plate and the correction plate.

[0011] Preferably, the distance between the two boat top tooth bases is greater than 1 cm to reduce the probability of battery chip chipping and fragmentation.

[0012] Preferably, the bottoms of the correction plate, the flush plate, and the limiting plate are spaced 0.05 cm - 0.1 cm from the top of the transmission mechanism to ensure the normal operation of the transmission mechanism.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The present utility model can effectively reduce automatic fragmentation, effectively reduce manual intervention, effectively reduce rework chips caused by battery chip fragmentation and automatic jamming, thereby improving the overall process yield of solar cells, greatly improving the smoothness of the machine, and being very helpful for improving production capacity.

[0015] 2. The present utility model can correct and center the battery chips during the transmission process of the battery chips, further reducing the possibility of carding of the battery chips during the transmission process, and improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0017] Figure 1 is a three-dimensional structural schematic diagram proposed by the present utility model;

[0018] Figure 2 is a partial structural schematic diagram proposed by the present utility model;

[0019] Figure 3 is the Figure 2 enlarged structural schematic diagram of A in;

[0020] Figure 4 is a structural schematic diagram of the correction plate proposed by the present utility model.

[0021] In the figure: 1. Quartz boat; 2. Boat top tooth base; 3. Transmission mechanism; 4. Auxiliary component; 41. Correction plate; 411. Smooth flexible partition; 42. Rotating shaft; 43. Torsion spring; 44. Mounting bracket; 45. Flush plate; 46. Rotation limiting component; 461. Extension bracket; 462. Fitting plate; 47. Flush groove; 471. Reinforcing plate; 48. Limiting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. 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 creative efforts fall within the scope of protection of the present utility model.

[0023] In the TOPCon process, in the LPCVD process, the wafers are combined face-to-face in automation and placed in a quartz boat. After the inserter combines the wafers, the edge opening is relatively large after the two wafers are combined, resulting in a high probability of jamming in the quartz boat during loading and a relatively high rate of abnormal fragmentation. The main purpose of this hardware transformation is to reduce the fragmentation rate in the LP process automation. Please refer to Figures 1-4 , this embodiment provides a wafer loading device for the LPCVD process, including a quartz boat 1 and two boat top tooth bases 2 fixed to the bottom of the quartz boat 1. The distance between the two boat top tooth bases 2 is greater than 1 cm. The 1 cm increase is based on the existing technology and is used to reduce the probability of wafer chipping and fragmentation. By replacing and modifying the structure of the boat top tooth base 2, the edge opening becomes smaller after the wafers are closed in the boat top tooth base 2, and the wafers can smoothly enter the quartz boat 1 during loading, reducing jamming and thus reducing fragmentation.

[0024] On the sides of the two boat top tooth bases 2, there is a transmission mechanism 3 for transporting the wafers. The transmission mechanism 3 is a belt transmission, which is mainly composed of a driving wheel and a driven wheel. The driving wheel is driven by a power source (such as a motor), and the driven wheel is driven by the transmission force, so that the belt starts to rotate under the driving force to realize the wafer transportation work.

[0025] Reference Figures 2-4As shown, in the LPCVD process, the wafers are merged face-to-face in automation and placed in the quartz boat 1. After the wafer inserter combines the wafers, the edge opening is relatively large after the two wafers are merged, resulting in frequent jamming of the wafers in the quartz boat 1 during loading and a relatively high number of abnormal fragments. In order to correct and assist the wafers merged face-to-face before they enter the quartz boat 1, the following settings are made. A secondary positioning component 4 for correcting the wafers merged face-to-face is provided at the top of the transfer mechanism 3. The secondary positioning component 4 includes two correction plates 41 symmetrically arranged at the top of the transfer mechanism 3. At the top of both correction plates 41, a rotating shaft 42 is fixedly connected. The top end of the rotating shaft 42 is rotatably connected to a mounting bracket 44. A torsion spring 43 is sleeved on the outer wall of the rotating shaft 42. The torsion spring 43 is used to push the correction plate 41 to reset when the wafer completely passes through the correction plate 41. The two ends of the torsion spring 43 are fixedly connected to the correction plate 41 and the mounting bracket 44 respectively. Place the wafers merged face-to-face on the top of the transfer mechanism 3 for transmission. During the transmission process, the wafers gradually enter between the two correction plates 41. As the wafers move forward with the force of the transfer mechanism 3, the correction plate 41 rotates under the mounting bracket 44 through the rotating shaft 42, realizing the correction process of the wafers merged face-to-face, and further reducing the occurrence of wafer jamming when the wafers enter the quartz boat 1.

[0026] Reference Figure 3As shown in the figure, a leveling plate 45 is provided at the right end of the calibration plate 41. A leveling groove 47 for making the calibration plate 41 perpendicular to the leveling plate 45 is formed on the surface of the leveling plate 45. A reinforcing plate 471 is fixedly connected to the inner wall of the leveling groove 47, and the inner wall of the reinforcing plate 471 is flush with the side surface of the calibration plate 41. The reinforcing plate 471 is made of steel plate material. The steel plate has a high hardness, which enables it to reduce the surface wear caused by friction when the calibration plate 41 enters the leveling groove 47 and is flush with the reinforcing plate 471. Moreover, the steel plate has high structural stability and is not easily deformed or damaged due to temperature changes or mechanical vibrations. This ensures its effective protection of the inner wall of the leveling groove 47 during long-term use and improves the reliability of the perpendicularity between the calibration plate 41 and the leveling plate 45. A limiting plate 48 is fixedly connected to the side of the leveling plate 45 away from the leveling groove 47. To ensure the reliability of the battery chip calibration process, when the forward force of the battery chip causes the calibration plate 41 to rotate and fit with the leveling groove 47, it indicates that the battery chips merged face-to-face have been calibrated and centered for transmission between the two calibration plates 41. The calibrated and centered battery chips enter the space between the two limiting plates 48 and are transmitted to the boat top tooth base 2. Smooth and flexible partition plates 411 for reducing friction are fixedly connected to the front sides of both the limiting plate 48 and the calibration plate 41. The main purpose of the design of the smooth and flexible partition plates 411 is to reduce the wear or damage that may be caused by friction and extrusion during the feeding process of the battery chips. The smooth and flexible partition plates 411 are made of soft and wear-resistant materials, such as soft rubber or special plastic materials, which have certain elasticity and surface smoothness. Since the surfaces of the smooth and flexible partition plates 411 are smooth and soft, they can effectively reduce the frictional force when the battery chips contact the partition plates during the feeding process, thereby reducing the wear on the surface of the battery chips and extending the service life of the battery chips. In addition, the softness and elasticity of the smooth and flexible partition plates 411 can provide a certain buffering effect during the feeding of the battery chips, reducing the physical damage or deformation that the battery chips may suffer due to extrusion. By effectively reducing friction and providing a buffering effect, the smooth and flexible partition plates 411 help to protect the surface quality of the battery chips, which is particularly important for materials or coatings with vulnerable surfaces, and can improve the protection performance of the battery chips during the production process, ensuring product quality and production efficiency.

[0027] Reference Figure 4As shown in the figure, a rotation limiting component 46 for restricting the rotation angle of the flat plate 45 is provided at the left end of the calibration plate 41. The rotation limiting component 46 includes an extension frame 461 fixed to the right side of the mounting frame 44. One end of the extension frame 461 away from the mounting frame 44 is fixedly connected with a fitting plate 462. The left end of the calibration plate 41 is beveled and fits with the front side of the fitting plate 462. When the calibration plate 41 is reset by the torsion spring 43, the fitting plate 462 is set to fit with the left end of the calibration plate 41, which plays a role in restricting the reset angle of the calibration plate 41. The bottoms of the calibration plate 41, the alignment flat plate 45, and the limit plate 48 and the top of the transmission mechanism 3 are all spaced 0.05 cm - 0.1 cm apart to ensure the normal operation of the transmission mechanism 3.

[0028] 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 within the protection scope of the present invention.

Claims

1. A loading device for battery cells in an LPCVD process, comprising a quartz boat (1) and two boat top tooth bases (2) fixed to the bottom of the quartz boat (1), wherein the sides of the two boat top tooth bases (2) are provided with a transmission mechanism (3) for transmitting the battery cells, characterized in that: The top of the transmission mechanism (3) is provided with an auxiliary position component (4) for correcting the battery sheets that are merged front to front; The auxiliary position assembly (4) comprises two correction plates (41) symmetrically arranged on the top of the transmission mechanism (3), the tops of the two correction plates (41) are fixedly connected to a rotating shaft (42), the tops of the rotating shafts (42) are rotatably connected to a mounting frame (44), the outer wall of the rotating shaft (42) is sleeved with a torsion spring (43), and the two ends of the torsion spring (43) are respectively fixedly connected to the correction plates (41) and the mounting frame (44).

2. The LPCVD process cell feeding device according to claim 1, characterized in that: A flush plate (45) is provided at the right end of the correction plate (41), and a flush groove (47) is provided on the surface of the flush plate (45) for making the correction plate (41) and the flush plate (45) perpendicular.

3. The LPCVD process cell feeding device according to claim 2, characterized in that: The inner wall of the flush groove (47) is fixedly connected with a reinforcing plate (471), and the inner wall of the reinforcing plate (471) is flush with the side surface of the correction plate (41).

4. The LPCVD process cell feeding device according to claim 1, characterized in that: The left end of the correction plate (41) is provided with a rotation limiting assembly (46) for limiting the rotation angle of the alignment plate (45), the rotation limiting assembly (46) comprising an extension frame (461) fixed to the right side of the mounting frame (44), the end of the extension frame (461) away from the mounting frame (44) being fixedly connected to a bonding plate (462), the left end of the correction plate (41) being arranged at an oblique angle and bonding with the front side of the bonding plate (462).

5. The LPCVD process cell feeding device according to claim 2, characterized in that: A side of the flush plate (45) away from the flush groove (47) is fixedly connected to a limit plate (48), and the front sides of the limit plate (48) and the correction plate (41) are both fixedly connected to a light-softening baffle (411) for reducing friction.

6. The LPCVD process cell feeding device according to claim 1, characterized in that: The distance between the two boat top tooth bases (2) is greater than 1 centimeter, which is used to reduce the probability of battery cell breakage and fragmentation.

7. The LPCVD process cell feeding device according to claim 1, characterized in that: The bottoms of the correction plate (41), the leveling plate (45), and the limiting plate (48) are spaced 0.05 cm to 0.1 cm from the top of the transmission mechanism (3) to ensure the normal operation of the transmission mechanism (3).

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