Solar cell electric injection material box

Abstract

The utility model discloses an electric injection material box for solar cells. The electric injection material box comprises a material box body and a scale projection device, the material box body is used for stacking the solar cells, and after the solar cells are stacked on the material box body, the side surfaces of the solar cells form a measurement projection surface; the scale projection device is arranged on the material box body, and the scale projection device projects measurement scales on the measurement projection surface. According to the utility model, the scales are projected on the measuring projection surface, so that an operator can intuitively judge whether the solar cells are stacked flatly or not according to the scale marks corresponding to each solar cell, the flatness detection efficiency of the solar cells can be greatly improved, and the solar cell flatness detection device has the characteristics of simple structure and convenience in operation.

Description

Technical Field

[0001] The utility model relates to the field of solar cell sheets, in particular to an electrical injection material box for solar cell sheets. Background Art

[0002] At present, the production process of solar cells has become increasingly mature and standardized production can be achieved. The main process steps are as follows: texturing → diffusion → SE laser → alkali polishing → post-oxidation → coating → screen printing → sintering → electrical injection → testing and sorting → storage. As the core technology for anti-attenuation of batteries, electrical injection can effectively eliminate or reduce the phenomenon of light decay, and then passivate the hydrogen atoms in the back laminate film to regenerate a compound structure without a recombination center, thereby avoiding light-induced decay. When entering the electrical injection, the cells are generally stacked and placed in a material box and then sent to the electrical injection equipment by a conveyor belt. The workshop yield can be improved by timely detecting defective cells in the material box.

[0003] In the actual production process, when the solar cell is damaged or there are aluminum beads on the back of the solar cell, the solar cell will be uneven when stacked in the material box. On-site inspection personnel generally use ruler measurement or human eye observation to make judgments, which may fail to find the problem or fail to find the problem in time, and fail to quickly sort out the bad solar cells, resulting in a decrease in the yield of solar cells and certain defects. Utility Model Content

[0004] The utility model aims to provide a solar cell battery injection box to quickly and intuitively judge defective solar cells and improve the yield rate of the production line.

[0005] In order to solve the above technical problems, the utility model provides a solar cell electric injection material box, comprising a material box body and a scale projection device;

[0006] The material box body is used for stacking solar cells, and after the solar cells are stacked on the material box body, the side surfaces thereof form a measurement projection surface;

[0007] The scale projection device is disposed on the material box body, and the scale projection device projects a measurement scale on the measurement projection surface.

[0008] Furthermore, the scale projection device is rotatably mounted on the material box via a limiting member, and the scale projection device rotates within the limiting member and has a first state and a second state.

[0009] Furthermore, when the scale projection device is in the first state, the scale projection device is facing the measurement projection surface, and the scale projection device projects the measurement scale on the measurement projection surface.

[0010] Furthermore, when the scale projection device is in the second state, the scale projection device deviates from the measurement projection surface, and the scale projection device is in a storage state.

[0011] Furthermore, the limiting member includes a positioning frame, a limiting piece and a rotating connecting rod;

[0012] The positioning frame is arranged in a fan shape, and two positioning frames are arranged in parallel;

[0013] The limiting plates are provided with two pieces, and the two limiting plates are respectively fixedly arranged at the radial edges of both sides of the positioning frame;

[0014] The rotating connecting rod is hinged at the center of the positioning frame, and the rotating connecting rod is in a first state and a second state respectively when in contact with the two limiting plates.

[0015] Furthermore, the angle between the two limiting plates is an obtuse angle.

[0016] Furthermore, a protection box is also provided on the material box body, and when the scale projection device is in the second state, the scale projection device is located in the protection box.

[0017] Furthermore, the protection box has an opening that matches the scale projection device, and the bottom surface of the protection box is also provided with a movable groove for the rotating connecting rod to rotate.

[0018] Furthermore, a buffer protection pad is provided on the inner wall of the protection box.

[0019] Compared with the prior art, the utility model has at least the following beneficial effects:

[0020] The utility model projects scales on the measurement projection surface, so that operators can intuitively judge whether the solar cells are stacked flat according to the scale lines corresponding to each solar cell, which can greatly improve the efficiency of solar cell flatness detection and has the characteristics of simple structure and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the first state structure of the solar cell battery pack according to the utility model;

[0022] Figure 2 This is a schematic diagram of the second state structure of the solar cell battery pack according to the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the limiting member of the solar cell electricity injection box of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the protection box of the solar cell electricity injection box of the utility model. DETAILED DESCRIPTION

[0025] The solar cell electric injection box of the utility model will be described in more detail below in conjunction with the schematic diagram, which shows the preferred embodiment of the utility model. It should be understood that those skilled in the art can modify the utility model described herein and still achieve the beneficial effects of the utility model. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation of the utility model.

[0026] The present invention is described in more detail in the following paragraphs 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 accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0027] like Figures 1 to 4 As shown, an embodiment of the utility model proposes a solar cell electricity injection box, including a box body 1 and a scale projection device 2.

[0028] Specifically, the material box body 1 is used for stacking solar cells, and after the solar cells are stacked on the material box body 1 , the side surfaces thereof form a measurement projection surface 3 .

[0029] The scale projection device 2 is disposed on the material box body 1 , and the scale projection device 2 projects a measurement scale on the measurement projection surface 3 .

[0030] In this embodiment, after the solar cells are stacked on the material box body 1, the side of the solar cells forms a measurement projection surface 3. When it is necessary to detect the flatness of the solar cells, the scale projection device 2 is turned on, and the scale projection device 2 projects the scale on the measurement projection surface 3. The scale projection device 2 can be a micro projector.

[0031] Since the thickness of a single solar cell is fixed, when the solar cells are stacked flat, the scale difference between adjacent cells should be an integer multiple of the thickness of the single solar cell. The specific judgment method is:

[0032] If the scale difference between N adjacent solar cells is M, and the thickness of a single solar cell is d, when M=N×d, the solar cells are stacked flat in the vertical direction and are good solar cells; when M>N×d, the solar cells are stacked unevenly in the vertical direction and there are defective solar cells. At this time, it can be judged by the scale difference between two adjacent solar cells.

[0033] In order to ensure that defective solar cells can be screened, a plurality of scale projection devices 2 may be provided on the material box body 1 to detect different sides of the solar cell.

[0034] Furthermore, the scale projection device 2 is rotatably mounted on the material box body through a limiting member, and the scale projection device 2 rotates in the limiting member and has a first state and a second state.

[0035] Specifically, when the scale projection device 2 is in the first state, the scale projection device 2 faces the measurement projection surface 3, and the scale projection device 2 projects the measurement scale on the measurement projection surface 3. At this time, the on-site operator can determine the flatness according to the scale difference of the adjacent solar cells.

[0036] When the scale projection device 2 is in the second state, the scale projection device 2 deviates from the measurement projection surface 3, and the scale projection device 2 is in a storage state. When the scale projection device 2 is in the storage state, on the one hand, the scale projection device 2 stops working, and on the other hand, it can reduce the damage to the scale projection device 2 caused by external collision.

[0037] Furthermore, the limiting component includes a positioning frame 4 , a limiting piece 5 and a rotating connecting rod 6 .

[0038] Specifically, the positioning frame 4 is arranged in a fan shape, and two positioning frames 4 are arranged in parallel.

[0039] The limiting plates 5 are provided with two pieces, and the two limiting plates 5 are respectively fixedly arranged at the radial edges of both sides of the positioning frame 4 .

[0040] The rotating connecting rod 6 is hinged at the center of the positioning frame 4 , and the rotating connecting rod 6 is in a first state and a second state respectively when in contact with the two limiting plates 5 .

[0041] Specifically, when the position-limiting member is installed, one of the positioning frames 4 is fitted and fixedly arranged on the column 11 of the magazine body 1, and the scale projection device 2 is rotated and arranged inside the positioning frame 4 by rotating the connecting rod 6. When the scale projection device 2 is rotated to the end positions at both ends of the positioning frame 4, it has a first state and a second state, which are the scale projection state and the storage state, respectively.

[0042] In a specific embodiment, the angle between the two limiting plates 5 is an obtuse angle.

[0043] Among them, a limiting plate 5 is in a horizontal state. When the rotating connecting rod 6 contacts the limiting plate 5, due to the positioning support of the limiting plate 5, the rotating connecting rod 6 and the scale projection device 2 are stably in the current position, and the scale projection operation is performed at this time.

[0044] The other limiting piece 5 is in an inclined state, and the angle between the two limiting pieces 5 is an obtuse angle. When the rotating connecting rod 6 contacts the other limiting piece 5, the rotating connecting rod 6 contacts the limiting piece 5 in an inclined state, and the limiting piece 5 can support the rotating connecting rod 6. The rotating connecting rod 6 and the scale projection device 2 are stably in the current position, which is in the storage state.

[0045] Furthermore, a protection box 7 is also provided on the material box body 1 , and when the scale projection device 2 is in the second state, the scale projection device 2 is located in the protection box 7 .

[0046] Specifically, the protection box 7 has an opening 8 that matches the scale projection device 2 , and a movable groove 9 for the rotating connecting rod 6 to rotate is also provided on the bottom surface of the protection box 7 .

[0047] When the scale projection device 2 rotates from the first state to the second state, the rotating connecting rod 6 passes through the movable groove 9 and finally contacts the second state limit piece 5. At this time, the scale projection device 2 is located in the protection box 7, which can protect the scale projection device 2.

[0048] In order to reduce the damage of the protection box 7 caused by collision with the scale projection device 2 due to vibration or collision, a buffer protection pad 10 is arranged on the inner wall of the protection box 7.

[0049] Compared with the prior art, the utility model has at least the following beneficial effects:

[0050] The utility model projects scales on the measurement projection surface, so that operators can intuitively judge whether the solar cells are stacked flat according to the scale lines corresponding to each solar cell, which can greatly improve the efficiency of solar cell flatness detection and has the characteristics of simple structure and convenient operation.

[0051] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A solar cell battery injection box, characterized in that: It includes a material box body and a scale projection device; The material box body is used for stacking solar cells, and after the solar cells are stacked on the material box body, the side surfaces thereof form a measurement projection surface; The scale projection device is disposed on the material box body, and the scale projection device projects a measurement scale on the measurement projection surface.

2. The solar cell electricity injection box according to claim 1, characterized in that: The scale projection device is rotatably mounted on the material box through a limiting member, and the scale projection device rotates in the limiting member to have a first state and a second state.

3. The solar cell electricity injection box according to claim 2, characterized in that: When the scale projection device is in the first state, the scale projection device faces the measurement projection surface, and the scale projection device projects the measurement scale on the measurement projection surface.

4. The solar cell electricity injection box according to claim 2, characterized in that: When the scale projection device is in the second state, the scale projection device deviates from the measurement projection surface, and the scale projection device is in a storage state.

5. The solar cell electricity injection box according to claim 2, characterized in that: The limiting member includes a positioning frame, a limiting piece and a rotating connecting rod; The positioning frame is arranged in a fan shape, and two positioning frames are arranged in parallel; The limiting plates are provided with two pieces, and the two limiting plates are respectively fixedly arranged at the radial edges of both sides of the positioning frame; The rotating connecting rod is hinged at the center of the positioning frame, and the rotating connecting rod is in a first state and a second state respectively when in contact with the two limiting plates.

6. The solar cell electricity injection box according to claim 5, characterized in that: The included angle between the two limiting plates is an obtuse angle.

7. The solar cell electricity injection box according to claim 5, characterized in that: A protection box is also provided on the material box body, and when the scale projection device is in the second state, the scale projection device is located in the protection box.

8. The solar cell electricity injection box according to claim 7, characterized in that: The protection box has an opening matched with the scale projection device, and the bottom surface of the protection box is also provided with a movable groove for the rotation of the rotating connecting rod.

9. The solar cell electricity injection box according to claim 7, characterized in that: A buffer protection pad is arranged on the inner wall of the protection box.

Images