TOPCon battery loading clamp and quartz boat

Abstract

The invention solves the problem that the distance between two battery pieces is difficult to control when the battery pieces are installed in a single-groove double-piece structure, and relates to the field of batteries, in particular to a TOPCon battery loading clamp and a quartz boat, which comprises a bearing plate, two limiting rods arranged side by side and two battery pieces are installed on the front surface of the bearing plate, and the number of the battery pieces is two. The two battery pieces are arranged in a front-and-back mode, the lifting assembly is arranged at the top of the bearing plate and used for assisting the battery pieces to be disengaged from the bearing plate, and the clamping mechanism is installed on the bearing plate and provided with a plurality of limiting assemblies which extend upwards from the bottom of the bearing plate and are arranged side by side. The limiting assemblies are located in the middle between the limiting rods and the lifting assemblies, and a driving assembly used for driving the multiple limiting assemblies to rotate by an angle is installed at the bottom of the bearing plate. The distance between two battery pieces can be accurately controlled, it is ensured that the positions of each pair of battery pieces are accurate in the loading process, and the stability and reliability of the production process are improved.

Description

Technical Field

[0001] The invention relates to the technical field of batteries, in particular to a TOPCon battery loading fixture and a quartz boat. Background Art

[0002] At present, the N-type TOPCon battery quartz boat in the existing technology usually adopts a single-slot double-piece structure. This is because it is considered that the single-piece process will affect the actual output and waste a lot of resources; however, due to the existence of the BPSG area, in the double-piece state, the BPSG area is not protected and is easily washed away by HF, resulting in damage to the front velvet surface during the de-plating process and over-polishing; which in turn leads to low battery efficiency and low yield, and waste of production capacity.

[0003] In the prior art, patent announcement number CN216354253U provides a deposition device for N-type battery POLY silicon, which includes a bearing mechanism and two fixed plates, the two fixed plates are arranged opposite to each other, and the bearing mechanism is arranged between the two fixed plates to fix and support a number of silicon wafers between the two fixed plates; the bearing mechanism is provided with a number of slots for placing silicon wafers, and the middle of each slot has a raised tooth to place two silicon wafers with a gap in the same slot. The deposition device for N-type battery POLY silicon can place two silicon wafers with a gap in the same slot, thereby effectively avoiding the disadvantage of too tight silicon wafer adhesion, and can make it easy to remove the POLY silicon plated on the front; reduce leakage, increase the partial open circuit voltage, and enhance the passivation effect; thereby improving the overall yield of TOPCon batteries, and achieving production capacity growth while saving costs.

[0004] However, the above technical solution realizes the spacing distribution between two battery cells placed in a slot of a quartz boat by setting a latch tooth in the middle of a slot. However, in actual operation, it is difficult to grasp the spacing between the two battery cells when installing the battery cells, which may lead to the phenomenon of placing the battery cells in the wrong slot position. Summary of the invention

[0005] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a TOPCon battery loading fixture and a quartz boat to solve the problem that the single-slot double-chip structure proposed in the above background technology may cause the wrong slot position when placing two battery chips.

[0006] To achieve the above object, the present invention provides the following technical solution: a TOPCon battery loading fixture, comprising:

[0007] A load-bearing plate, on the front of which are mounted two limit rods arranged side by side;

[0008] Battery cells: There are two battery cells, and the two battery cells are arranged front and back;

[0009] A lifting assembly, disposed on the top of the carrier plate, for assisting the battery sheet in breaking contact with the carrier plate;

[0010] The clamping mechanism is mounted on the carrier plate and has a plurality of position limiting components arranged side by side and extending upward from the bottom of the carrier plate, wherein the position limiting components are located in the middle between the position limiting rod and the lifting component, and a driving component for driving the plurality of position limiting components to rotate at a certain angle is mounted on the bottom of the carrier plate;

[0011] Among them, the limiting assembly includes a rotating shaft rotatably inserted on the supporting plate, and a flexible elliptical rod installed on the outer surface of the rotating shaft. When the long axis diameter direction of the flexible elliptical rod is adjusted to a front-to-back axial arrangement, the distance between its front and rear sides and the limiting rod and the lifting assembly is smaller than the width of the battery cell.

[0012] Preferably, the lifting assembly comprises a mounting plate arranged above the bearing plate, and an electric telescopic cylinder with a free end connected to the top surface of the bearing plate is mounted on the back side of the mounting plate.

[0013] Preferably, two guide rods arranged side by side are installed on the top of the bearing plate, and a guide tube connected to the back side of the mounting plate is slidably sleeved on the outer surface of the guide rods.

[0014] Preferably, the driving assembly includes a placement plate installed at the bottom of the supporting plate, a stepper motor is installed on the placement plate, the outer surfaces of several rotating shafts are sleeved with spur gear 1 located below the supporting plate, the output end of the stepper motor is sleeved with spur gear 2, and spur gear 2 is meshed with one of the spur gears 1 through tooth groove matching.

[0015] Preferably, the rotation directions of two adjacent flexible elliptical rods are opposite.

[0016] A quartz boat, the quartz boat is used for installing the battery sheet, and the quartz boat comprises:

[0017] Fixed plate;

[0018] There are two lower bearing bars, which are fixedly mounted on the surface of the fixed plate and arranged side by side;

[0019] There are two upper bearing rods, which are slidably engaged on the surface of the fixed plate, and the spacing between the two upper bearing rods and the spacing between the two lower bearing rods are both greater than the lateral width of the bearing plate and the mounting plate;

[0020] The movable plate is arranged at the front side of the fixed plate and is movably plugged between the upper bearing rod and the lower bearing rod.

[0021] Preferably, the upper bearing bar and the lower bearing bar are both provided with grooves whose front and rear widths are consistent with the distances of the opposite sides of the two battery cells, and the spacing between two adjacent front and rear grooves is consistent with the spacing between the two battery cells on the bearing plate, and the rear end of the upper bearing bar is provided with a connecting block whose cross section is arranged in a T shape;

[0022] The distance between the inner walls on the opposite sides of the grooves on the two lower bearing bars is consistent with the lateral width of the battery sheet.

[0023] Preferably, both sides of the front side of the fixing plate are provided with sliding grooves for slidingly embedding the connecting blocks;

[0024] The slide groove consists of a vertical part, a transverse part connected to the top of the vertical part, and a concave part connected to the lower side of one side of the transverse part.

[0025] By means of the above technical solution, the present invention provides a TOPCon battery loading fixture and a quartz boat, which have at least the following beneficial effects:

[0026] 1. The present invention can accurately control the distance between two battery cells by using the designed flexible elliptical rod in conjunction with the limit rod and the lifting assembly, ensuring that the position of each pair of battery cells during the loading process is accurate, avoiding errors caused by manual operation in traditional methods, and improving the stability and reliability of the production process.

[0027] 2. The design of the flexible elliptical rod of the present invention can not only effectively separate the two battery cells to prevent them from direct contact, but also provide a certain degree of protection for the battery cells during transportation, reduce wear or damage during transportation, and thus improve the yield rate of the product.

[0028] 3. The present invention drives two adjacent flexible elliptical rods among a plurality of flexible elliptical rods to rotate in opposite directions, thereby ensuring that the contact forces generated by the two adjacent flexible elliptical rods on the battery cell are mutually opposed and remain equal, thereby effectively ensuring clamping while avoiding unnecessary displacement, thereby improving the accuracy and firmness of battery cell positioning and preventing the battery cell from sliding and shifting during transportation.

[0029] 4. The transmission system driven by a stepper motor realizes the automatic positioning and clamping functions of the battery cell, simplifies the loading process of the battery cell, reduces the complexity of manual operation, and improves work efficiency.

[0030] 5. The entire loading process is automated, which reduces human intervention, speeds up the loading of battery cells, and improves production efficiency. At the same time, through the effective battery cell positioning and clamping mechanism, the generation of defective products is reduced, which indirectly improves the overall production efficiency, reduces material waste and rework times, and thus reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0032] Figure 1 It is a schematic diagram of the overall structure of the loading fixture of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the clamping mechanism of the present invention;

[0034] Figure 3 It is a schematic diagram of the top plan structure of the loading fixture of the present invention;

[0035] Figure 4 It is a structural schematic diagram of the quartz boat of the present invention;

[0036] Figure 5 It is a schematic diagram of the split structure of the fixing plate and the upper bearing rod of the present invention;

[0037] Figure 6 It is a schematic diagram of the installation line structure of the battery cell of the present invention.

[0038] In the figure:

[0039] 100, load-bearing plate; 101, limit rod; 200, battery cell;

[0040] 300, lifting assembly; 301, mounting plate; 302, electric telescopic cylinder; 303, guide rod; 304, guide tube;

[0041] 400, clamping mechanism; 401, limiting assembly; 4011, rotating shaft; 4012, flexible elliptical rod; 402, driving assembly; 4021, stepping motor; 4022, spur gear 1; 4023, spur gear 2;

[0042] 500, fixed plate; 501, slideway; 600, lower bearing rod;

[0043] 700, upper bearing rod; 701, connecting block; 800, movable plate. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0045] Embodiment 1

[0046] At present, the spacing between two cells placed in a slot of a quartz boat is achieved by setting a tooth in the middle of the slot. However, in actual operation, it is difficult to grasp the spacing between the two cells when installing the cells, which may lead to the phenomenon of misplacing the cells in the slot. Figure 1-Figure 6 As shown, this embodiment proposes a TOPCon battery loading fixture, which can effectively control the distance between two battery cells. The TOPCon battery loading fixture has a carrier plate 100, two limiting rods 101 arranged side by side are installed on the front of the carrier plate 100, two battery cells 200 arranged front and back are placed on the carrier plate 100, a lifting component 300 installed on the top of the carrier plate 100 and used to assist the battery cells 200 to break away from the carrier plate 100, and a clamping mechanism 400 installed on the carrier plate 100, the clamping mechanism 400 has a plurality of limiting components 401 arranged side by side extending upward from the bottom of the carrier plate 100. 1. The limiting assembly 401 is located in the middle between the limiting rod 101 and the lifting assembly 300. A driving assembly 402 for driving a plurality of limiting assemblies 401 to rotate is installed at the bottom of the carrier plate 100. The two battery cells 200 are placed in the gap formed between the limiting assembly 401 on the carrier plate 100 and the limiting rod 101 and the lifting assembly 300, and then the driving assembly 402 is operated in coordination to drive the limiting assembly 401 to adjust the angle, so as to finally achieve the purpose of synchronously clamping the two battery cells 200.

[0047] Specifically, the limiting assembly 401 includes a rotating shaft 4011 rotatably plugged into the carrier plate 100, and a flexible elliptical rod 4012 installed on the outer surface of the rotating shaft 4011. When the long axis diameter direction of the flexible elliptical rod 4012 is adjusted to a front-to-back axial arrangement, the distance between its front and rear sides and the limiting rod 101 and the lifting assembly 300 is smaller than the width of the battery cell 200. When the driving assembly 402 is running, the plurality of rotating shafts 4011 are first controlled to rotate synchronously, so as to drive the plurality of flexible elliptical rods 4012 to follow the rotation. During the rotation, the distance between the outer surface of the flexible elliptical rod 4012 and the limiting rod 101 and the lifting assembly 300 is adjusted, and the limiting rod 101 and the lifting assembly 300 are cooperated to realize the clamping and limiting of the two battery cells 200, thereby accurately controlling the distance between the two battery cells 200 and ensuring that the position of each pair of battery cells 200 is accurate during the loading process. In addition, the surface of the flexible elliptical rod 4012 itself is relatively soft, which can provide a certain degree of protection for the battery cell 200 during transportation and reduce wear or damage during transportation.

[0048] Embodiment 2

[0049] In order to facilitate the positioning of the two battery cells 200 on the quartz boat, other structures in the loading fixture can be separated from the battery cells 200. Figure 1 and Figure 6 As shown, the lifting assembly 300 includes a mounting plate 301 disposed above the carrier plate 100. The mounting plate 301 needs to be connected to the robot arm, and is intended to drive the loading fixture related structure to move to the position of the quartz boat through the mounting plate 301 according to the set program by the robot arm. An electric telescopic cylinder 302 with a free end connected to the top surface of the carrier plate 100 is installed on the back of the mounting plate 301. Two guide rods 303 arranged side by side are installed on the top of the carrier plate 100. A guide tube 304 connected to the back of the mounting plate 301 is slidably sleeved on the outer surface of the guide rod 303. After the battery cell 200 is transferred to the set position on the quartz boat by the cooperation of the robot arm and the loading fixture, the electric telescopic cylinder 302 controls the upper and lower adjustment position of the carrier plate 100 and the robot arm again gives the front and rear axial adjustment to the carrier plate 100, the lifting assembly 300 and the clamping mechanism 400, so that after the two transported battery cells 200 are embedded in the quartz boat, the loading fixture can be separated from the battery cells 200.

[0050] Embodiment 3

[0051] Under normal circumstances, when several flexible elliptical rods 4012 rotate in the same direction, the strength and effect of the centripetal force they exert will be superimposed rather than offset, and these unevenly distributed forces are likely to cause the battery cell 200 to slide and fall out of position to one side. In order to effectively solve this problem, Figure 1-Figure 3As shown, the driving component 402 includes a storage plate installed at the bottom of the supporting plate 100, a stepper motor 4021 is installed on the storage plate, the outer surfaces of the plurality of rotating shafts 4011 are sleeved with a spur gear 1 4022 located below the supporting plate 100, the output end of the stepper motor 4021 is sleeved with a spur gear 2 4023, and the spur gear 2 4023 is meshed with one of the spur gears 1 4022 through tooth groove matching, the rotation directions of two adjacent flexible elliptical rods 4012 are opposite, and the total number of the plurality of flexible elliptical rods 4012 is an even number. By using the operation of the stepper motor 4021, the spur gear 2 4023 is driven to rotate in a set direction, and then the rotation force of the spur gear 2 4023 is transmitted to one of the spur gears 1 4022, and the rotation force is transmitted between the two adjacent spur gears 1 4022, so that the two adjacent rotating shafts 4011 rotate in opposite directions, thereby finally causing the two adjacent flexible elliptical rods 4012 to rotate in opposite directions by a set angle, thereby ensuring that the contact forces generated by the two adjacent flexible elliptical rods 4012 on the battery cell 200 are mutually opposed and remain equal, effectively ensuring the clamping while avoiding unnecessary displacement, thereby improving the accuracy and firmness of the positioning of the battery cell 200, and preventing the battery cell 200 from sliding and shifting during the transportation process. At the same time, the reverse rotation can reduce the difference in the force on the flexible elliptical rod 4012 and the strain concentration phenomenon, reduce the fatigue of the mechanical components, and thus make the service life of the flexible material or accessories longer and more stable to perform its functions.

[0052] Embodiment 4

[0053] like Figure 4-Figure 6 As shown, a quartz boat is used for installing a battery cell 200. The quartz boat includes a fixed plate 500. Both sides of the front side of the fixed plate 500 are provided with a slide groove 501 for slidingly embedding a connecting block 701. The slide groove 501 is composed of a vertical part, a horizontal part connected to the top of the vertical part, and a concave part connected to the lower side of one side of the horizontal part. Two lower bearing rods 600 arranged side by side are installed on the lower side of the surface of the fixed plate 500. Two upper bearing rods 700 arranged side by side are slidably embedded on the upper side of the surface of the fixed plate 500. The spacing between the two upper bearing rods 700 and the spacing between the two lower bearing rods 600 are greater than the spacing between the bearing rods 700 and the lower bearing rods 600. The lateral width of the carrier plate 100 and the mounting plate 301, the upper bearing rod 700 and the lower bearing rod 600 are both provided with grooves whose front and rear widths are consistent with the distance between the opposite sides of the two battery cells 200, and the spacing between two adjacent front and rear grooves is consistent with the spacing between the two battery cells 200 on the carrier plate 100, the spacing between the inner walls on the opposite sides of the grooves on the two lower bearing rods 600 is consistent with the lateral width of the battery cells 200, the rear end of the upper bearing rod 700 is installed with a connecting block 701 with a T-shaped cross-section, and the front side of the fixed plate 500 is provided with a movable plate 800 that is movably plugged between the upper bearing rod 700 and the lower bearing rod 600.

[0054] The steps of placing two battery cells 200 onto the quartz boat using a robotic arm in conjunction with a loading fixture are as follows:

[0055] First, the movable plate 800 is separated from the upper bearing rod 700 and the lower bearing rod 600, and the two upper bearing rods 700 are moved along the path of the slide groove 501 to the position of the concave part, and then the two battery cells 200 are placed on the bearing plate 100 and on both sides of the flexible elliptical rod 4012;

[0056] Then, the stepper motor 4021 is operated to control the plurality of rotating shafts 4011 to drive the plurality of flexible elliptical rods 4012 to rotate through the spur gear 2 4023 and the spur gear 1 4022, and two adjacent flexible elliptical rods 4012 rotate in opposite directions at a set angle, so as to push the battery cells 200 on both sides to move in opposite directions, and finally cooperate with the limit rod 101 and the mounting plate 301 to clamp the two battery cells 200;

[0057] Then, the mechanical arm connected to the mounting plate 301 is used to control its front-to-back axial movement, so that the loading fixture enters from one side of the movable plate 800 along the two upper bearing bars 700 and the two lower bearing bars 600, and then the battery cell 200 is placed on the front and back sides of the teeth in the groove;

[0058] Here, the stepper motor 4021 is operated to unlock the battery cell 200, and the electric telescopic cylinder 302 is operated to move the movable carrier plate 100 downward, so that the limit rod 101 and the flexible elliptical rod 4012 are pulled out from under the battery cell 200, and then the robotic arm drives the mounting plate 301 away to carry out the next handling work;

[0059] Finally, when the battery cell 200 is fully loaded, the two upper supporting rods 700 are first lifted upward and then moved horizontally, and finally moved from top to bottom along the vertical part of the slide groove 501, so that the groove on the upper supporting rod 700 is stuck on the battery cell 200, and then the movable plate 800 is docked with the upper supporting rod 700 and the lower supporting rod 600 to achieve installation and fixation.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A TOPCon battery loading fixture, characterized in that: include: A bearing plate (100), on the front side of which are mounted two limiting rods (101) arranged side by side; Battery cells (200), the number of battery cells (200) is two, and the two battery cells (200) are arranged in a front-to-back manner; A lifting assembly (300) is arranged on the top of the carrier plate (100) and is used to assist the battery cell (200) in breaking away from contact with the carrier plate (100); A clamping mechanism (400) is mounted on the carrier plate (100) and comprises a plurality of position limiting components (401) arranged side by side and extending upward from the bottom of the carrier plate (100), wherein the position limiting components (401) are located in the middle between the position limiting rod (101) and the lifting component (300), and a driving component (402) for driving the plurality of position limiting components (401) to rotate at a certain angle is mounted on the bottom of the carrier plate (100); The limiting assembly (401) comprises a rotating shaft (4011) rotatably plugged into the carrier plate (100), and a flexible elliptical rod (4012) mounted on the outer surface of the rotating shaft (4011); when the long axis diameter direction of the flexible elliptical rod (4012) is adjusted to be arranged in a front-to-rear axial direction, the spacing between its front and rear sides and the limiting rod (101) and the lifting assembly (300) is smaller than the width of the battery cell (200).

2. A TOPCon battery loading fixture according to claim 1, characterized in that: The lifting assembly (300) comprises a mounting plate (301) arranged above the bearing plate (100), and an electric telescopic cylinder (302) having a free end connected to the top surface of the bearing plate (100) is mounted on the back of the mounting plate (301).

3. A TOPCon battery loading fixture according to claim 2, characterized in that: Two guide rods (303) arranged side by side are installed on the top of the bearing plate (100), and a guide tube (304) connected to the back side of the mounting plate (301) is slidably sleeved on the outer surface of the guide rod (303).

4. A TOPCon battery loading fixture according to claim 1, characterized in that: The driving assembly (402) comprises a storage plate mounted on the bottom of the carrier plate (100), a stepper motor (4021) is mounted on the storage plate, the outer surfaces of the plurality of rotating shafts (4011) are sleeved with spur gears (4022) located below the carrier plate (100), the output end of the stepper motor (4021) is sleeved with spur gears (4023), and the spur gears (4023) are meshed with one of the spur gears (4022) through tooth grooves.

5. A TOPCon battery loading fixture according to claim 4, characterized in that: The rotation directions of two adjacent flexible elliptical rods (4012) are opposite.

6. A quartz boat, used for installing the battery cell (200) according to any one of claims 1 to 5, characterized in that: The quartz boat comprises: Fixed plate (500); Two lower bearing bars (600) are fixedly mounted on the surface of the fixing plate (500) and arranged side by side; There are two upper bearing rods (700), the two upper bearing rods (700) are slidably engaged on the surface of the fixing plate (500), and the spacing between the two upper bearing rods (700) and the spacing between the two lower bearing rods (600) are both greater than the lateral width of the bearing plate (100) and the mounting plate (301); The movable plate (800) is arranged on the front side of the fixed plate (500) and is movably plugged between the upper bearing rod (700) and the lower bearing rod (600).

7. A quartz boat according to claim 6, characterized in that: The upper bearing bar (700) and the lower bearing bar (600) are both provided with grooves whose front and rear widths are consistent with the distance between the opposite sides of the two battery sheets (200), and the spacing between two adjacent front and rear grooves is consistent with the spacing between the two battery sheets (200) on the bearing plate (100), and the rear end of the upper bearing bar (700) is provided with a connecting block (701) whose cross section is arranged in a T shape; The distance between the inner walls on the opposite sides of the grooves of the two lower bearing bars (600) is consistent with the lateral width of the battery sheet (200).

8. A quartz boat according to claim 7, characterized in that: Both sides of the front side of the fixing plate (500) are provided with sliding grooves (501) for slidingly embedding the connecting block (701); The slide groove (501) consists of a vertical portion, a transverse portion connected to the top of the vertical portion, and a concave portion connected to the lower side of one side of the transverse portion.

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