Front structure of XBC battery and sintering transmission device

Abstract

The invention discloses a front face structure of an XBC battery and a sintering conveying device, and relates to the technical field of batteries, the front face structure comprises a sintering furnace and a heating device arranged in the sintering furnace, a carrying plate is fixedly installed in the sintering furnace, a transmission wheel is rotatably installed on the carrying plate, and a conveying belt is installed on the transmission wheel in a transmission mode; the device further comprises a fine displacement mechanism, the fine displacement mechanism comprises a first displacement wheel and a second displacement wheel, and the height of the conveying belt can be increased or decreased through cooperation of the first displacement wheel and the second displacement wheel. According to the invention, two rows and not limited to two rows of grid lines are prepared on the front surface, namely the light receiving surface, of the battery through printing, coating, electroplating and the like, and conveying is carried out in cooperation with a conveying belt in the conveying device, so that the appearance problems of slurry smudginess caused by suction cup type adsorption on the back surface and suction cup printing caused by a suction cup are avoided; and dirt is prevented from being brought into the belt to damage the front surface of the XBC battery.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and specifically to a front structure and sintering transport device for an XBC battery. Background Technology

[0002] During the XBC manufacturing process, two or more passivation layers are uniformly deposited on the front and back of the battery. These passivation layers contain passivation materials such as aluminum oxide, silicon oxynitride, silicon nitride, aluminum nitride, and silicon oxide.

[0003] After the passivation layer is formed, it must be printed and sintered to form ohmic contacts. Traditional XBC batteries have grid lines distributed on the back of the battery, and the absence of grid lines on the front creates an aesthetically pleasing unobstructed appearance. However, traditional XBC batteries must have transmission and transport on the front, which will inevitably lead to damage and impact on the passivation layer on the front.

[0004] Because the battery cells need to be transported, the front side needs to be conveyed during the back-side processing or testing. To avoid scratching or contaminating the passivation layer on the front side, the normal solution is to use vacuum suction cups for transport. When there is no paste on the back side, suction cups can be used to hold it in place. However, after the printing process, there is paste adhering to the back of the XBC battery, and the paste has not yet dried and cured, so suction cups cannot be used. Another solution is to use a thin resin conveyor belt to transport the XBC batteries. The resin belt contacts the front of the battery, but since the XBC battery has no paste on its surface, contacting the resin conveyor belt will inevitably lead to dirt being drawn into the belt over time, damaging the front surface of the XBC battery and affecting its appearance and performance. Summary of the Invention

[0005] The purpose of this invention is to provide a front-side structure and sintering transport device for XBC batteries to overcome the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a front structure of an XBC battery, comprising a battery plate, wherein a plurality of grid lines are symmetrically arranged on the battery plate, and the grid lines are made of a metal material.

[0007] A sintering conveying device for XBC batteries includes a sintering furnace and a heating device disposed therein. A carrying plate is fixedly installed inside the sintering furnace, a drive wheel is rotatably installed on the carrying plate, and a conveyor belt is driven on the drive wheel.

[0008] Also includes:

[0009] The fine displacement mechanism includes a first displacement wheel and a second displacement wheel. The cooperation of the first displacement wheel and the second displacement wheel can raise or lower the height of the conveyor belt so that the conveyor belt can transport the solar panels at different heights. The fine displacement mechanism forms a heating zone, a sintering zone and a cooling zone in the sintering furnace.

[0010] The deep repositioning mechanism includes a first repositioning wheel and a second repositioning wheel. The cooperation of the first repositioning wheel and the second repositioning wheel can form a delay cavity on the conveyor belt transmission route, so that the conveyor belt can transport the solar panel with a delay.

[0011] The first and second displacement wheels cooperate to form an inclined end of the conveyor belt.

[0012] The fine displacement mechanism also includes an extension block, which is fixedly mounted on the loading plate. The first displacement wheel is rotatably mounted on the extension block, and the second displacement wheel is rotatably mounted on the loading plate.

[0013] A connecting frame is fixedly installed on the extension block, and a displacement plate is fixedly installed on the connecting frame.

[0014] The transmission belt is equipped with a soft magnetic strip.

[0015] A connecting rod is vertically slidably mounted on the carrier plate, and a lifting plate is fixedly mounted on the connecting rod. The lifting plate is located inside the delay cavity.

[0016] A friction wheel is rotatably mounted on the carrier plate, the friction wheel is in contact with the second repositioning wheel, a movable rod is fixedly mounted on the friction wheel, and a groove is opened on the lifting plate, through which the movable rod passes.

[0017] The lifting plate is rectangular.

[0018] The first displacement wheel, the second displacement wheel, the first repositioning wheel, and the second repositioning wheel are all in the shape of an "I".

[0019] In the above technical solution, the present invention provides a front structure of XBC battery and a sintering transport device, which has the following beneficial effects: The present application prepares two rows of grid lines on the front side of the battery, i.e. the light-receiving surface, and transports them with the transport belt in the transport device, thereby avoiding the slurry contamination caused by suction cup adsorption on the back side, as well as appearance problems such as suction cup marks caused by the suction cup itself, and also avoids dirt from being brought into the belt and damaging the front surface of the XBC battery. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the internal structure of a sintering furnace provided in an embodiment of the present invention;

[0022] Figure 2 This is a partial structural diagram of the transmission belt provided in an embodiment of the present invention;

[0023] Figure 3 Provided for embodiments of the present invention Figure 2 Schematic diagram of Part A;

[0024] Figure 4 This is a partial structural diagram of the transmission belt provided in an embodiment of the present invention;

[0025] Figure 5 This is a partial structural schematic diagram of the lifting plate provided in an embodiment of the present invention;

[0026] Figure 6 This is a partial structural schematic diagram of the battery panel provided in an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Sintering furnace; 2. Heating device; 3. Carrying plate; 4. Conveyor belt; 5. Drive wheel; 61. Extension block; 62. Connecting frame; 63. Positioning plate; 64. First positioning wheel; 65. Second positioning wheel; 66. Inclined end; 71. First repositioning wheel; 72. Second repositioning wheel; 73. Friction wheel; 74. Movable rod; 75. Lifting plate; 751. Groove; 76. Connecting rod; 8. Battery panel; 8.1. Grid line. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Please see Figure 1-6 A front structure of an XBC battery includes a battery panel 8, on which a plurality of grid lines 8.1 are symmetrically arranged, and the grid lines 8.1 are made of metal material;

[0031] The grid lines 8.1 can be fabricated on the solar panel 8 using electroplating technology;

[0032] Preferably, there are two gate lines 8.1, and the material of the gate lines 8.1 can be silver, copper, etc.

[0033] A sintering conveying device for XBC batteries includes a sintering furnace 1 and a heating device 2 disposed therein. A carrying plate 3 is fixedly installed inside the sintering furnace 1, a drive wheel 5 is rotatably installed on the carrying plate 3, and a conveyor belt 4 is driven on the drive wheel 5.

[0034] Also includes:

[0035] The fine displacement mechanism includes a first displacement wheel 64 and a second displacement wheel 65. The cooperation of the first displacement wheel 64 and the second displacement wheel 65 can raise or lower the height of the conveyor belt 4 so that the conveyor belt 4 can transport the solar panel 8 at different heights. The fine displacement mechanism forms a heating zone, a sintering zone and a cooling zone in the sintering furnace 1.

[0036] The deep repositioning mechanism includes a first repositioning wheel 71 and a second repositioning wheel 72. The cooperation of the first repositioning wheel 71 and the second repositioning wheel 72 can form a delay cavity on the transmission route of the conveyor belt 4, so that the conveyor belt 4 can transport the solar panel 8 with a delay.

[0037] It also includes a drive mechanism, in which a synchronizing rod is coaxially installed between two transmission wheels 5 on the same side, so that the two transmission wheels 5 on the same side can be synchronously transmitted. The drive mechanism includes a servo motor, which can be installed on the outside of the sintering furnace 1 and connected to the transmission wheel 5 through a transmission shaft to drive the transmission wheel 5 to rotate.

[0038] In another embodiment of the present invention: the first shifting wheel 64 and the second shifting wheel 65 cooperate to form an inclined end 66 on the conveyor belt 4;

[0039] In the existing sintering furnace 1 process, a heating zone, a sintering zone and a cooling zone are usually set up. However, the existing process usually sets different heating devices 2 to different temperatures to process different areas. Furthermore, due to the constant transmission speed, it takes a long time to sinter. Therefore, the size of the sintering furnace 1 is usually quite long, which affects the plant area.

[0040] Among them, reference Figure 2 The left-side first shifting wheel 64 and the left-side drive wheel 5 cooperate to keep the conveyor belt 4 horizontal. The cooperation of the first shifting wheel 64 and the second shifting wheel 65 raises the conveyor belt 4, giving it a slanted end 66. Then, the cooperation of the second shifting wheel 65 and the left-side first shifting wheel 71 keeps the raised conveyor belt 4 horizontal. At this point, when the solar panel 8 is transported on the conveyor belt 4, it can be lifted to a higher height via the slanted end 66. Therefore, in reference... Figure 1-2Based on this, when the solar panel 8 enters the sintering furnace 1, it first passes through the heating zone, and then enters the sintering zone under the lifting of the fine displacement mechanism. In the sintering zone, it is conveyed for a delayed time through the deep displacement mechanism to extend the sintering time. Then, it is lowered through the fine displacement mechanism on the right to enter the cooling zone and then conveyed out.

[0041] The heating device 2 has a constant height, while the conveyor belt 4 changes its height via a fine displacement mechanism, allowing the solar panels 8 on it to move closer to or further away from the heating device 2. This controls the temperature received by the surface of the solar panels 8. For example, when the solar panels 8 enter the sintering furnace 1 from the left, their height is lower when entering the heating zone, thus moving them further away from the heating device 2. Therefore, even with a constant temperature in the heating device 2, the temperature received by their surface remains low, allowing the surface temperature of the solar panels 8 to gradually increase. When the height is raised by the fine displacement mechanism and they enter the sintering zone, the surface of the solar panels 8 is closer to the heating device 2. Thus, even with a constant temperature in the heating device 2, the surface temperature of the solar panels 8 will still rise until the required sintering temperature is reached. Conversely, the fine displacement mechanism on the right lowers the height of the solar panels 8, resulting in a lower surface temperature received by the heating device 2 and a slower cooling process. The fine displacement mechanism naturally forms the heating zone, sintering zone, and cooling zone within the sintering furnace 1, eliminating the need for multiple temperature control systems to heat, sinter, and cool the solar panels 8.

[0042] In another embodiment of the present invention: the fine displacement mechanism further includes an extension block 61, which is fixedly mounted on the carrier plate 3, a first displacement wheel 64 is rotatably mounted on the extension block 61, and a second displacement wheel 65 is rotatably mounted on the carrier plate 3;

[0043] The first displacement wheel 64 is mounted on the load plate 3 via an extension block 61 to facilitate the constraint of the conveyor belt 4 with the second displacement wheel 65.

[0044] In another embodiment of the present invention: a connecting frame 62 is fixedly installed on the extension block 61, and a displacement plate 63 is fixedly installed on the connecting frame 62;

[0045] The position plate 63 is positioned above the first position wheel 64. Due to the cooperation of the first and second position plates 63, the conveyor belt 4 forms an inclined end 66. At this time, the first position wheel 64, located above the conveyor belt 4, will obstruct the conveying of the battery panel 8. Therefore, the inclined position plate 63 separates the first position wheel 64 and the battery panel 8. At the same time, both ends of the position plate 63 are provided with chamfers or rounded corners. Thus, when the battery panel 8 contacts the position plate 63, one end of the position plate 63 will be lifted and moved above the position plate 63. The length of the position plate 63 is less than the length of the battery panel 8. Therefore, under the conveying of the conveyor belt 4, after one end of the battery panel 8 moves onto the position plate 63, it can still receive the conveying of the conveyor belt 4. When one end of the battery panel 8 completely passes over the position plate 63, it will contact the inclined end 66 of the conveyor belt 4 and continue to maintain transmission.

[0046] In another embodiment of the present invention: a soft magnetic strip is provided inside the conveyor belt 4;

[0047] The position plate 63 can also be equipped with a soft magnetic strip. The grid strip is usually made of silver or copper and is a metal strip. When the solar panel 8 is conveyed by the conveyor belt 4, the grid strip can be attracted to the soft magnet in the conveyor belt 4, so that it is not easy to shake.

[0048] In another embodiment of the present invention: a connecting rod 76 is vertically slidably mounted on the carrier plate 3, and a lifting plate 75 is fixedly mounted on the connecting rod 76, the lifting plate 75 being located inside the delay cavity;

[0049] A friction wheel 73 is rotatably mounted on the loading plate 3. The friction wheel 73 is in contact with the second repositioning wheel 72. A movable rod 74 is fixedly mounted on the friction wheel 73. A groove 751 is opened on the lifting plate 75, and the movable rod 74 passes through the groove 751.

[0050] When the conveyor belt 4 is in operation, it will drive the first repositioning wheel 71 and the second repositioning wheel 72 to rotate. As the second repositioning wheel 72 rotates, it will drive the friction wheel 73 to rotate. The friction wheel 73 will then drive the movable rod 74 to rotate. The movable wheel can move laterally within the groove 751. Therefore, when the movable rod 74 follows the friction wheel 73 in a circular motion, its lateral movement will occur within the groove 751. The vertical movement of the movable rod 74 will abut against the inner top wall and inner bottom wall of the groove 751, thereby driving the lifting plate 75 to move up or down. The lifting plate 75 can move vertically via the connecting rod 76.

[0051] When the solar panel 8 is conveyed into the sintering zone and moved onto the lifting plate 75, the height of the lifting plate 75 can be controlled by controlling the distance between the center of the movable rod 74 and the center of the friction wheel 73 of the same diameter. At the same time, the overall cycle of the lifting plate 75 moving up and down can also be changed. By controlling the diameter of the friction wheel 73, the number of rotations of the friction wheel 73 at the same transmission speed can be changed, thereby controlling the cycle of the lifting plate 75 moving up and down. Therefore, the cycle of the lifting plate 75 moving up and down and the height of the lifting plate 75 can be adjusted by controlling the diameter of the friction wheel 73 alone or in combination, or by controlling the distance between the center of the movable rod 74 and the center of the friction wheel 73.

[0052] By adjusting the diameter of the friction wheel 73 or the position of the movable rod 74 to match the conveying speed of the conveyor belt 4, during the overall battery processing, after the back of the battery panel 8 is printed and transferred to the sintering furnace 1, the processing and transfer speed of the previous step of the battery panel 8 is usually constant and has a certain interval. When the battery panel 8 is transferred onto the conveyor belt 4, it enters the heating zone along with the conveyor belt 4, and then enters the sintering zone. After entering the sintering zone, the battery panel 8 will move above the lifting plate 75. At this time, the rotation of the movable rod 74 will drive the lifting plate 75 to rise and press against the bottom surface of the battery panel 8 until the battery panel 8 rises. At this time, the battery panel 8 is lifted and detached from the conveyor belt 4. As the battery panel 8 rises, it will be closer to the heating device 2, thus allowing for more efficient heating. After the plate 8 is moved away from the conveyor belt 4, it will no longer be conveyed. Since the conveyor belt 4 is still moving, it will not affect the entry and heating of the subsequent solar panel 8 until the lifting cycle ends and it descends. At this time, the falling solar panel 8 will contact the conveyor belt 4 again and receive the conveyor belt 4 to move forward until it enters the top of the next lifting plate 75 and is lifted again. At the same time, the next solar panel 8 will move to the top of the previous lifting plate 75. At this time, the two solar panels 8 will be lifted at the same time and stop moving until they descend again. When the solar panel 8 is lifted on the lifting plate 75 and close to the heating device 2, the conveying distance between each two adjacent solar panels 8 is reduced. At the same time, it stays in the shorter sintering area for a relatively longer time, which reduces the length requirement of the sintering furnace 1 and thus reduces the floor area of ​​the sintering furnace 1.

[0053] Furthermore, a magnetic strip is fixedly installed on the inner wall of the lifting plate 75. By installing a magnet inside the lifting plate 75, the lifting plate 75 will not shift when lifting the battery panel 8.

[0054] Furthermore, a tensioning mechanism is provided to tension the conveyor belt 4, thereby making the transmission process more compact.

[0055] Preferably, the friction wheel 73 can mesh with the second repositioning wheel 72;

[0056] In another embodiment, the friction wheel 73 can mesh with the first repositioning wheel 71, and the transmission belt 4 can be a synchronous belt. In this case, the bottom end of the synchronous belt meshes with the first repositioning wheel 71, so that the rotation of the friction wheel 73 is more precise.

[0057] In another embodiment, the conveyor belt 4 can be a thin rope, and the thin rope can be made of materials such as silver-plated copper or gold-plated copper and has soft magnetic strips inside. The circular arrangement of the thin rope can make the contact area with the solar panel 8 smaller, thereby reducing the impact on the grid line 8.1.

[0058] In another embodiment of the present invention: the lifting plate 75 is configured as a rectangle;

[0059] The lifting plate 75 is located inside the delay cavity. Its rise and fall within the delay cavity will not affect the transmission of the conveyor belt 4. When the lifting plate 75 rises above the top of the conveyor belt 4, it will lift the battery panel 8 and allow the battery panel 8 to rise smoothly.

[0060] In another embodiment of the present invention: the first displacement wheel 64, the second displacement wheel 65, the first repositioning wheel 71 and the second repositioning wheel 72 are all in the shape of "I";

[0061] The "I"-shaped structure can cover the conveyor belt 4, thereby preventing the conveyor belt 4 from shifting. At the same time, the protruding ends of the first displacement wheel 64, the second displacement wheel 65, the first repositioning wheel 71 and the second repositioning wheel 72 set in the "I" shape will not cross the conveyor belt 4, thereby avoiding contact with the solar panel 8.

[0062] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A front-side structure of an XBC battery, comprising a battery panel (8), characterized in that, The battery panel (8) has several grid lines (8.1) symmetrically arranged on it, and the grid lines (8.1) are made of metal material.

2. A sintering transport device for an XBC battery according to claim 1, comprising a sintering furnace (1) and a heating device (2) disposed therein, wherein a carrier plate (3) is fixedly installed inside the sintering furnace (1), characterized in that, A transmission wheel (5) is rotatably mounted on the loading plate (3), and a transmission belt (4) is driven on the transmission wheel (5). Also includes: The fine displacement mechanism includes a first displacement wheel (64) and a second displacement wheel (65). The cooperation of the first displacement wheel (64) and the second displacement wheel (65) can raise or lower the height of the conveyor belt (4) so ​​that the conveyor belt (4) can transport the battery panel (8) at different heights, and form a heating zone, a sintering zone and a cooling zone in the sintering furnace (1) through the fine displacement mechanism. The deep repositioning mechanism includes a first repositioning wheel (71) and a second repositioning wheel (72). The cooperation of the first repositioning wheel (71) and the second repositioning wheel (72) can form a delay cavity on the transmission route of the conveyor belt (4) so ​​that the conveyor belt (4) can transport the battery panel (8) with a delay.

3. The sintering transport device for an XBC battery according to claim 2, characterized in that, The first shift wheel (64) and the second shift wheel (65) cooperate to form an inclined end (66) of the conveyor belt (4).

4. The sintering transport device for an XBC battery according to claim 2, characterized in that, The fine displacement mechanism also includes an extension block (61), which is fixedly mounted on the loading plate (3), the first displacement wheel (64) is rotatably mounted on the extension block (61), and the second displacement wheel (65) is rotatably mounted on the loading plate (3).

5. The sintering transport device for an XBC battery according to claim 4, characterized in that, A connecting frame (62) is fixedly installed on the extension block (61), and a displacement plate (63) is fixedly installed on the connecting frame (62).

6. The sintering transport device for an XBC battery according to claim 2, characterized in that, The transmission belt (4) is provided with a soft magnetic strip.

7. The sintering transport device for an XBC battery according to claim 6, characterized in that, A connecting rod (76) is vertically slidably mounted on the loading plate (3), and a lifting plate (75) is fixedly mounted on the connecting rod (76). The lifting plate (75) is located inside the delay cavity. A friction wheel (73) is rotatably mounted on the loading plate (3). The friction wheel (73) is in contact with the second repositioning wheel (72). A movable rod (74) is fixedly mounted on the friction wheel (73). A groove (751) is provided on the lifting plate (75), and the movable rod (74) passes through the groove (751).

8. The sintering transport device for an XBC battery according to claim 7, characterized in that, The lifting plate (75) is rectangular.

9. The sintering transport device for an XBC battery according to claim 8, characterized in that, The first displacement wheel (64), the second displacement wheel (65), the first repositioning wheel (71), and the second repositioning wheel (72) are all in the shape of "I".

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