Battery piece repair equipment and battery piece repair method

Abstract

The application provides a battery piece repair device and a battery piece repair method. The battery piece repair device comprises a bottom plate and a correction mechanism. The bottom plate has a bearing surface for bearing the battery piece. The correction mechanism is used for correcting the battery piece and comprises a first correction assembly and a second correction assembly. The first correction assembly and the second correction assembly are respectively located on the opposite sides of the bearing surface. The first correction assembly is movable relative to the bottom plate to push the battery piece to move to a preset position in the direction of the second correction assembly. The second correction assembly is elastically deformed by being pressed by the battery piece. The application is at least beneficial to reduce the breakage rate of the battery piece during the repair of the battery piece.

Description

Technical Field

[0001] This application relates to the field of battery cell technology, and in particular to a battery cell repair equipment and a battery cell repair method. Background Technology

[0002] A solar cell is a device that converts sunlight into electrical energy. As the cleanest renewable resource, solar energy is increasingly widely used. During the manufacturing process of solar cells, defects can occur. For example, microcracks may develop on the cut or uncut edges of some cells during welding, necessitating the use of rework equipment to repair these defective cells. During rework, the cells typically need to be aligned and positioned first.

[0003] However, the current design of equipment for repair needs improvement. Summary of the Invention

[0004] This application provides a battery cell repair equipment and a battery cell repair method, which at least helps to reduce the breakage rate of repaired battery cells.

[0005] According to some embodiments of this application, one aspect of this application provides a battery cell repair device, including: a base plate having a bearing surface for bearing battery cells; and a straightening mechanism for straightening the battery cells, the straightening mechanism including a first straightening component and a second straightening component, the first straightening component and the second straightening component being located on opposite sides of the bearing surface; wherein the first straightening component is movable relative to the base plate to push the battery cells toward the direction of the second straightening component to a preset position, and the second straightening component undergoes elastic deformation under the pressure of the battery cells.

[0006] In some embodiments, the second correction component includes: a main body; an elastic portion located within the main body, one end of which is fixedly connected to the main body; and a first correction portion connected to the other end of the elastic portion and located on the side of the elastic portion facing the base plate; wherein the elastic portion can undergo elastic deformation when squeezed by the battery cell; after the battery cell moves to the preset position, the elastic portion rebounds and pushes the first correction portion to move, so that the first correction portion pushes the battery cell from the preset position to the initial position.

[0007] In some embodiments, the elastic portion includes a plurality of spaced-apart sub-elastic portions, and the first corrective portion includes a plurality of spaced-apart first sub-corrective portions, each of the first sub-corrective portions being connected to one of the elastic portions; wherein at least two adjacent first sub-corrective portions are used to push the same battery cell.

[0008] In some embodiments, the first sub-correction part includes a rotating wheel connected to the elastic part, wherein the rotating wheel is rotatable about its axis and moves along the extension direction of the bearing surface.

[0009] In some embodiments, the second correction component further includes: a first driving component, configured to drive the main body or the first correction component to move before the elastic portion undergoes elastic deformation due to compression by the battery cell, so as to push the battery cell to perform preliminary correction of the battery cell, and to stop driving the main body or the first correction component to move after the preliminary correction.

[0010] In some embodiments, the first correction component includes: a second correction part, the second correction part being movable relative to the base plate; and a second driving component, configured to drive the second correction part toward the base plate before the second correction component undergoes elastic deformation due to compression by the battery cell, so as to push the battery cell toward the second correction component to the preset position, and after the battery cell moves to the preset position, drive the second correction part toward the direction away from the battery cell.

[0011] In some embodiments, the base plate includes a through hole penetrating the bearing surface; the cell repair equipment further includes a pipe and an air extraction structure connected to the pipe, the pipe communicating with the through hole; wherein the air extraction structure does not operate before the cell moves to the preset position; and the air extraction structure operates to extract air from the through hole via the pipe during the first correction component moving away from the cell.

[0012] According to some embodiments of this application, another aspect of this application also provides a method for repairing battery cells, which uses the battery cell repair machine provided in the above embodiments for repair, including: placing the battery cell on a bearing surface; moving a first alignment component toward a base plate and pushing the battery cell toward a second alignment component to a preset position; the second alignment component undergoing elastic deformation after being squeezed by the battery cell, so that the battery cell is subjected to the force applied by the first alignment component and the second alignment component and is aligned.

[0013] In some embodiments, after the battery cell moves to a preset position, the method further includes: the first correction component moving away from the battery cell; and the second correction component rebounding to push the battery cell from the preset position back to the initial position.

[0014] In some embodiments, the suction structure is not activated before the battery cell moves to the preset position; the suction structure is activated to evacuate air through the through-hole via a conduit during the movement of the first correction component away from the battery cell, so that the base plate adsorbs the battery cell; the suction structure is not activated during the movement of the battery cell from the preset position to the initial position.

[0015] The technical solution provided in this application has at least the following advantages:

[0016] The battery cell repair equipment provided in this application includes a base plate and a straightening mechanism. The straightening mechanism includes a first straightening component and a second straightening component, which are located on opposite sides of the bearing surface of the base plate. The first straightening component is movable relative to the base plate. By driving the first straightening component to move towards the base plate, the battery cell on the bearing surface is pushed towards the second straightening component to a preset position. This causes the second straightening component to undergo elastic deformation under the pressure of the battery cell. As a result, the second straightening component applies a force towards the first straightening component to the battery cell, thereby straightening the battery cell through the force applied by the first and second straightening components. In addition, the second straightening component can undergo elastic deformation, and during the process of the battery cell pressing the second straightening component, the battery cell applies a force away from the base plate to the second straightening component. As a result, the force on the second straightening component can move away from the base plate, which helps to reduce the bending degree of the battery cell and thus reduces the possibility of the battery cell breaking. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with corresponding pictures in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Unless otherwise stated, the pictures in the accompanying drawings do not constitute a limitation on scale. In order to more clearly illustrate the technical solutions in the embodiments of this application or in the conventional technology, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a battery cell repair device provided in one embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of a battery cell repair device provided in one embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of a battery cell repair device provided in one embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the structure of a battery cell repair device provided in one embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the structure of a battery cell repair device provided in one embodiment of this application;

[0023] Figure 6 This is a schematic diagram of the structure of a battery cell repair device provided in one embodiment of this application;

[0024] Figure 7 The flowchart below shows the steps of a battery cell repair method according to another embodiment of this application. Detailed Implementation

[0025] As can be seen from the background technology, the design of equipment for repair still needs improvement.

[0026] Analysis revealed that in the relevant technology, the cell rework equipment includes a base plate with a bearing surface for supporting the cells; a first alignment component and a second alignment component, which are located on opposite sides of the bearing surface; during the cell rework process, the first and second alignment components move towards each other to squeeze the cells on the bearing surface to align them. However, because the force applied to the cells by the first and second alignment components is difficult to control, the middle part of the cells can easily arch away from the base plate during the squeezing process, which can easily cause the cells to break and lead to rework failure.

[0027] This application provides a battery cell repair device. A first alignment component of the battery cell repair device is movable relative to a base plate. As the first alignment component moves towards the base plate, it pushes the battery cells on the base plate towards a second alignment component to a preset position. This causes the second alignment component to undergo elastic deformation under the pressure of the battery cells, thereby applying a force towards the first alignment component to the battery cells. The force applied by the first and second alignment components corrects the battery cells. When the battery cells compress the second alignment component, they apply a force away from the base plate. Because the second alignment component can undergo elastic deformation under pressure, it may move away from the base plate, thereby reducing the degree of bending of the battery cells and helping to reduce the possibility of cell breakage.

[0028] The embodiments of this application will now be described in detail with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the embodiments of this application to facilitate a better understanding of the application. However, the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0029] Figure 1 This is a schematic diagram of the structure of a battery cell repair device according to an embodiment of this application. Figure 2 This is a schematic diagram of the structure of a battery cell repair device according to an embodiment of this application. Figure 3 This is a schematic diagram of the structure of a battery cell repair device according to an embodiment of this application. Figure 4 This is a schematic diagram of the structure of a battery cell repair device according to an embodiment of this application. Figure 5 This is a schematic diagram of the structure of a battery cell repair device according to an embodiment of this application. Figure 6 This is a schematic diagram of the structure of a battery cell repair device according to an embodiment of this application, wherein, Figure 2 Including a perspective structural diagram of the second corrective component, Figure 4 Including a perspective structural diagram of the second corrective component, Figure 6 A perspective structural diagram including the second corrective component.

[0030] refer to Figures 1 to 6 The battery cell repair equipment includes a base plate 100, which has a bearing surface 102 for bearing the battery cells 101.

[0031] The battery cell repair equipment also includes a correction mechanism for correcting the battery cell 101. The correction mechanism includes a first correction component and a second correction component 103, which are located on opposite sides of the bearing surface 102.

[0032] The first alignment component is movable relative to the base plate 100 to push the battery cell 101 toward the second alignment component 103 to a preset position. The second alignment component 103 undergoes elastic deformation under the pressure of the battery cell 101. After being compressed by the battery cell 101, the second alignment component 103 applies a force toward the first alignment component 100 to the battery cell 101. The battery cell 101 is aligned by the force applied by the first and second alignment components 103. Furthermore, the first and second alignment components 103... 03. When a force is applied to the battery cell 101, the middle part of the battery cell 101 may arch away from the base plate 100 after being squeezed. Since the battery cell 101 will apply a force away from the first correction component to the second correction component 103 during the process of the battery cell 101 squeezing the second correction component 103, the second correction component 103 can undergo elastic deformation and move away from the first correction component, so as to reduce the degree of bending of the battery cell 101 after being squeezed by the first correction component and the second correction component 103, thereby reducing the breakage rate of the battery cell 101.

[0033] Understandably, before straightening the reworked battery cell 101, a robot or other equipment can be used to pick up the battery cell 101 and place it on the bearing surface 102. Then, the solder strips on the battery cell 101 can be removed. After straightening the battery cell 101, the reworked battery cells 101 need to be re-welded with solder strips. Before welding the battery cell 101, the battery cell 101 needs to be positioned in conjunction with the placement of the robot or other equipment to facilitate the picking up of the battery cell 101 by the robot or other equipment and to avoid the solder strips shifting during welding.

[0034] In some embodiments, after the battery cell 101 moves to a preset position, the second alignment component 103 is in an elastic deformation state, which can drive the first alignment component to move away from the battery cell 101, and the second alignment component 103 will rebound to push the battery cell 101 from the preset position to the initial position. The initial position is the position of the battery cell 101 before it is aligned by the first alignment component and the second alignment component 103. In this way, the battery cell 101 is in the same position on the base plate 100 when the solder strip is removed and reinstalled, which is simple to operate and facilitates the positioning of the battery cell 101 in combination with the placement of robots and other equipment. This makes it easier for robots and other equipment to grasp the battery cell 101, thereby reducing the possibility of the solder strip shifting during the welding of the battery cell 101.

[0035] In some embodiments, the first alignment component may include a second alignment part 112, which is movable relative to the base plate 100. The second alignment part 112 may be a plate-like structure. In some embodiments, the second alignment part 112 may also be a plurality of spaced-apart rotating wheels, which can rotate about their axes and move along the extending direction of the bearing surface 102. This facilitates adjusting the position of the first alignment component according to the position of the battery cells 101 on the base plate 100. Furthermore, during movement along the extending direction of the bearing surface 102, the rolling friction generated when the rolling wheels contact the base plate 100 or the battery cells 101 is relatively small, reducing impacts to the battery cells 101.

[0036] The first correction assembly may further include a second driving component (not shown), used to drive the second correction part 112 toward the base plate 100 before the second correction assembly 103 is elastically deformed by the pressure of the battery cell 101, so as to push the battery cell 101 toward the direction of the second correction assembly 103 to a preset position, and after the battery cell 101 moves to the preset position, drive the second correction part 112 toward the direction away from the battery cell 101.

[0037] In some embodiments, the base plate 100 may include a through hole 109 penetrating the bearing surface. In some embodiments, the cell repair equipment may also include a pipe and an air extraction structure connected to the pipe, the pipe being connected to the through hole 109.

[0038] Specifically, before the battery cell 101 moves to the preset position, the suction structure does not operate to facilitate the movement of the battery cell 101 on the base plate 100. After the battery cell 101 moves to the preset position, during the movement of the first alignment component away from the battery cell 101, the suction structure operates to evacuate the through hole 109 through the pipe because the second alignment component 103 is in an elastic deformation state, so that the through hole 109 can adsorb the battery cell 101 and prevent the battery cell 101 from shifting during the movement of the first alignment component. During the movement of the battery cell 101 from the preset position to the initial position, the battery cell 101 is moved by the rebound of the second alignment component 103, and the suction structure does not operate to facilitate the movement of the battery cell 101.

[0039] refer to Figure 2 , Figure 4 as well as Figure 6 In some embodiments, the second correction component 103 includes a main body 104.

[0040] In some embodiments, the second correction component 103 includes an elastic portion 105 located within the main body portion 104, and one end of the elastic portion 105 is fixedly connected to the main body portion 104, wherein the elastic portion 105 can undergo elastic deformation under the action of external force.

[0041] In some embodiments, the second correction component 103 includes a first correction part 106, which is connected to the other end of the elastic part 105 and is located on the side of the elastic part 105 facing the base plate 100.

[0042] In this process, the first alignment component moves toward the base plate 100 to push the battery cell 101 toward the second alignment component 103 to a preset position. During this process, the elastic part 105 is squeezed by the battery cell 101 and undergoes elastic deformation. As a result, the elastic part 105 applies a force to the first alignment part 106 in the direction of the first alignment component. The first alignment part 106 applies a force to the battery cell 101 in the direction of the first alignment component. The battery cell 101 is aligned by applying force to the battery cell 101 through the first alignment component and the second alignment component 103. The elastic part 105 can be compressed after being squeezed by the battery cell 101. As a result, the elastic part 105 can drive the first alignment part 106 to move away from the base plate 100. This helps to reduce the degree of bending of the battery cell 101 after being squeezed by the first alignment component and the second alignment component 103, thereby reducing the breakage rate of the battery cell 101.

[0043] After the battery cell 101 moves to the preset position, the elastic part 105 remains in an elastic deformation state, which can drive the first alignment component to move away from the battery cell 101, leaving space for the battery cell 101 to move. The elastic part 105 rebounds and pushes the first alignment part 106 to move, so that the first alignment part 106 pushes the battery cell 101 from the preset position to the initial position. In this way, the operation is simple and it is beneficial to locate the position of the battery cell 101 in combination with the placement of robots and other equipment, thereby reducing the possibility of solder strip misalignment during the subsequent process of soldering the battery cell 101.

[0044] In some embodiments, the main body 104 may include a first split portion 110 and a second split portion 111, wherein the first split portion 110 is connected to one end of the elastic portion 105, and the other end of the elastic portion 105 is connected to the first straightening portion 106. The elastic portion 105 is located inside the second split portion 111, and the second split portion 111 is used to protect the elastic portion 105. During the process of straightening the battery cell 101 using the straightening mechanism, the first split portion 110 is stationary relative to the base plate 100.

[0045] In some embodiments, the first split portion 110 may be fixedly connected to the second split portion 111. During the rebound of the elastic portion 105, due to the force provided by the elastic portion 105 towards the first alignment component, the first alignment portion 106 moves towards the first alignment component to push the battery cell 101 from a preset position to an initial position. In some embodiments, the first split portion 110 and the second split portion 111 are not connected, and the second split portion 111 may be connected to the first alignment portion 106. During the rebound of the elastic portion 105, when the first alignment portion 106 moves towards the first alignment component 106, the second split portion 111 moves along with the first alignment portion 106 towards the first alignment component 106 to push the battery cell 101 from a preset position to an initial position.

[0046] The elastic part 105 may include a plurality of spaced sub-elastic parts 107, and the first straightening part 106 includes a plurality of spaced first sub-straightening parts 108. Each sub-straightening part 108 is connected to a sub-elastic part 107. At least two adjacent first sub-straightening parts 108 are used to push the same battery cell 101. With this configuration, after the sub-elastic parts 107 and sub-straightening parts 108 are squeezed by the battery cell 101, the two sub-straightening parts 108 apply force to different areas of the battery cell 101 in the same direction, so that the force on each area of ​​the battery cell 101 is more uniform, thereby reducing the possibility of the battery cell 101 shifting during the straightening process, which is beneficial for straightening the battery cell 101.

[0047] In some embodiments, each sub-alignment 108 may also be connected to a plurality of sub-elastic parts 107, wherein each sub-elastic part 107 connects to different regions of the sub-alignment 108. Compared with the embodiment in which one sub-elastic part 107 is connected to one sub-alignment 108, the connection of one sub-alignment 108 to a plurality of sub-elastic parts 107 is beneficial to reducing the possibility of uneven force applied by the sub-elastic part 107 to each part of the sub-alignment 108 after the sub-elastic part 107 is squeezed by the battery cell 101, thereby avoiding the battery cell 101 from shifting during the alignment process and facilitating the alignment of the battery cell 101.

[0048] The sub-elastic part 107 can be made of a material with good elastic properties. Different sub-elastic parts 107 with different elastic coefficients can be replaced to correct the bending degree of different battery cells 101. In some embodiments, the sub-elastic part 107 can be a spring. In some embodiments, the sub-elastic part 107 can also be made of rubber with good elastic properties.

[0049] refer to Figure 1 and Figure 2 The first sub-alignment 108 can be a rotating wheel, which is connected to the elastic part 105. The rotating wheel can rotate around the axis of the rotating wheel and move along the extension direction of the bearing surface 102, so as to adjust the position of the second alignment component 103 according to the position of the battery cell 101 on the base plate 100. During the movement along the extension direction of the bearing surface 102, the friction generated when the rolling wheel contacts the base plate 100 or the battery cell 101 is rolling friction. The rolling friction force is small, which can reduce the impact on the battery cell 101.

[0050] refer to Figure 3 and Figure 4 In some embodiments, the first sub-correction part 108 may also be a plate-shaped structure. The first sub-correction part 108 is connected to the elastic part 105, and adjacent first sub-correction parts 108 are spaced apart. When the elastic part 105 is squeezed by the battery sheet 101, it applies a force toward the first correction component to the first sub-correction part 108. When the elastic part 105 rebounds, it pushes the first sub-correction part 108 to slide toward the first correction component.

[0051] refer to Figure 5 and Figure 6 In some embodiments, the first corrective part 106 may also be a single plate-like structure with multiple sub-elastic parts 107 spaced apart, and each sub-elastic part 107 is connected to different areas of the first corrective part 106.

[0052] In some embodiments, the second correction component 103 may further include a first driving component for driving the main body 104 or the first correction component 106 to move before the elastic part 105 is elastically deformed by the pressure of the battery piece 101, so as to push the battery piece 101 and perform preliminary correction on the battery piece 101, and after preliminary correction, stopping the driving of the main body 104 or the first correction component 106 to move.

[0053] In some embodiments, the cell repair equipment may further include a pressure sensor (not shown) for monitoring the force exerted on the cell 101 by the second alignment component 103 during the pushing of the cell 101 by the second alignment component 103. This allows the position of the second alignment component 103 relative to the cell 101 to be adjusted based on the data fed back by the pressure sensor, reducing the possibility of excessive force exerted on the cell 101 by the second alignment component 103. This helps to reduce the degree of bending of the cell 101, thereby reducing the breakage rate of the cell 101.

[0054] In some embodiments, the cell repair equipment may further include an infrared detector (not shown) for monitoring the degree of bending of the cell 101 as it moves toward the second straightening component 103 to a preset position. Based on the monitoring data from the infrared detector, the positions of the first straightening component and the second straightening component 103 are adjusted to avoid excessive force applied to the cell 101 by the first straightening component and the second straightening component 103, which helps to reduce the degree of bending of the cell 101 and thus reduces the breakage rate of the cell 101.

[0055] The battery cell repair equipment provided in the above-described embodiments includes a first alignment component that is movable relative to the base plate 100. By driving the first alignment component to move towards the base plate 100, the battery cell 101 on the base plate 100 is pushed towards the second alignment component 103 to a preset position. The second alignment component 103 undergoes elastic deformation under the pressure of the battery cell 101, thereby applying force to the battery cell 101 through the second alignment component 103 and the first alignment component to align the battery cell 101. During the compression process of the second alignment component 103 by the battery cell 101, the battery cell 101 applies a force to the second alignment component 103 away from the direction of the battery cell 101. 3. It can undergo elastic deformation and move away from the base plate 100, thereby reducing the bending degree of the battery cell 101 after being squeezed by the first and second alignment components 103, which helps to reduce the breakage rate of the battery cell 101. After the battery cell 101 moves to the preset position, the first alignment component can be driven away from the battery cell 101 to reserve the movable area of ​​the battery cell 101. Then, the battery cell 101 is pushed back to the initial position by the rebound of the second alignment component 103. The operation is simple and can be combined with the placement of robots and other equipment to position the battery cell 101, thereby reducing the possibility of the welding strip shifting during the subsequent welding of the battery cell 101.

[0056] Accordingly, another embodiment of this application also provides a method for repairing battery cells. The battery cell repair method provided in this other embodiment uses the battery cell repair equipment provided in the aforementioned embodiment for repair. The semiconductor structure provided in another embodiment of this application will be described in detail below with reference to the accompanying drawings. For parts that are the same as or corresponding to the previous embodiment, please refer to the corresponding descriptions in the aforementioned embodiments, which will not be described in detail below.

[0057] Figure 7 The flowchart below shows the steps of a battery cell repair method according to another embodiment of this application.

[0058] refer to Figure 7 S10, place the battery cell 101 on the support surface 102.

[0059] The battery cell repair mechanism includes a base plate 100, which has a bearing surface 102 for bearing the battery cell 101.

[0060] refer to Figure 7 S11, the first alignment component moves toward the base plate 100 and pushes the battery cell 101 toward the second alignment component 103 to a preset position. The second alignment component 103 undergoes elastic deformation after being squeezed by the battery cell 101, so that the battery cell 101 is subjected to the force applied by the first alignment component and the second alignment component 103 and is aligned.

[0061] The battery cell repair equipment includes a straightening mechanism, which includes a first straightening component and a second straightening component 103. The first straightening component is movable relative to the base plate 100 to push the battery cell 101 toward the second straightening component 103 to a preset position. The second straightening component 103 undergoes elastic deformation after being squeezed by the battery cell 101. The second straightening component 103 can apply a force toward the first straightening component to the battery cell 101, so as to straighten the battery cell 101 by the force applied to the battery cell 101 by the first straightening component and the second straightening component 103. When the second straightening component 103 undergoes elastic deformation, it can move away from the battery cell 101. This helps to reduce the degree of bending of the battery cell 101 when squeezed by the first straightening component and the second straightening component 103, thereby reducing the breakage rate of the battery cell 101.

[0062] In some embodiments, the second alignment component 103 may include a main body 104, an elastic part 105, and a first alignment part 106. The elastic part 105 is located within the main body 104, with one end fixedly connected to the main body 105 and the other end connected to the first alignment part 106. The first alignment part 106 is located on the side of the elastic part 105 facing the base plate 100. When the battery cell 101 moves to a preset position, the second alignment component 103 is pressed by the battery cell 101, thereby correcting the second alignment. The positive component 103 applies a force toward the first positive component to the battery cell 101, so as to correct the battery cell 101 by the force applied to the battery cell 101 by the first positive component and the second positive component 103. The elastic part 104 is compressed by elastic deformation under force, so that the first positive part 106 or the main body part 104 can move away from the battery cell 101. This reduces the degree of bending of the battery cell 101 due to the compression of the first positive component and the second positive component 103, which helps to reduce the breakage rate of the battery cell 101.

[0063] In some embodiments, the second correction component 103 may further include a first driving component; during the period when the battery cell 101 moves to a preset position, before the elastic portion 104 is elastically deformed by the compression of the battery cell 101, the first driving component may drive the main body portion 104 or the first correction portion 106 to move toward the battery cell 101, so as to push the battery cell 101 to perform preliminary correction of the battery cell 101, and after preliminary correction, stop driving the main body portion 104 or the first correction portion 106 to move.

[0064] In some embodiments, the first correction component may include a second correction part 112 and a second driving component. The second correction part 112 is movable relative to the base plate and is driven by the second driving component to move toward the base plate 100. After the battery cell 101 moves to a preset position, the second driving component controls the second correction part 112 to stop moving.

[0065] The base plate 100 also includes a through hole 109 penetrating the bearing surface 102. The cell repair equipment also includes a pipe and an air extraction structure connected to the pipe, with the pipe and the through hole 109 communicating. In some embodiments, the air extraction structure may not operate before the cell 101 moves to a preset position, so that the cell 101 can move on the base plate 100.

[0066] Subsequent steps include welding the multiple repaired battery cells 101 with solder ribbon. Understandably, before straightening the repaired battery cells 101, a robot or similar device can be used to pick up the battery cells 101 and place them on the support surface 102. Then, the solder ribbon on the battery cells 101 is removed. After straightening the battery cells 101, the multiple repaired battery cells 101 need to be re-welded with solder ribbon. Before welding the battery cells 101, the battery cells 101 need to be positioned in conjunction with the placement of the robot or similar device to facilitate picking them up and to prevent the solder ribbon from shifting during welding. Therefore, the position of the battery cells 101 can be determined based on the placement of the robot or other related equipment before welding.

[0067] In some embodiments, after the battery cell 101 moves to a preset position, the first alignment component can also be driven to move away from the battery cell 101 to reserve a movable area for the battery cell 101.

[0068] During the movement of the first alignment component away from the solar cell 101, the suction structure operates to evacuate air through the through-hole 109 via the pipe, so that the base plate 100 adheres to the solar cell 101, reducing the possibility of the solar cell 101 shifting due to vibrations or other factors caused by the movement of the first alignment component. The suction structure does not operate during the movement of the solar cell 101 from the preset position to the initial position.

[0069] In some embodiments, after the first alignment component leaves the battery cell 101, the second alignment component 103 rebounds to push the battery cell 101 from a preset position to an initial position. In this way, the rebound of the second alignment component 103 is used to push the battery cell 101 from the preset position to the initial position. This is simple to operate and facilitates the positioning of the battery cell 101 in conjunction with the placement of robots and other related equipment. This makes it easier for robots and other equipment to grasp the battery cell 101, thereby reducing the possibility of the solder strip shifting during the welding of the battery cell 101.

[0070] It is understandable that if the rebound of the second correction component 103 does not push the battery cell 101 from the preset position to the initial position, the first driving component can drive the second correction component 103 to push the battery cell 101 to the initial position, and after the battery cell 101 moves to the initial position, the first driving component drives the second correction component 103 away from the battery cell 101.

[0071] In some embodiments, while the first correction component moves away from the battery cell 101, the second correction component 103 may simultaneously rebound to push the battery cell 101 from a preset position to an initial position.

[0072] The subsequent steps also include welding multiple battery cells 101 that have been repaired using solder strips. Since the battery cells 101 that have been repaired have been corrected and moved to their initial positions in the previous steps, it is convenient to position the battery cells 101 in conjunction with the placement of robots and other related equipment, so that the solder strip offset is low during the welding process of the battery cells 101.

[0073] The battery cell repair method provided in the above embodiment first pushes the battery cell 101 on the bearing surface 102 towards the second correction component 103 using the first correction component to move the battery cell 101 to a preset position. The second correction component 103, after being squeezed by the battery cell, applies a force towards the first correction component to the battery cell 101. This corrects the battery cell 101 by combining the forces applied by the second correction component 103 and the first correction component. Furthermore, the second correction component 103, after being squeezed by the battery cell 101, can undergo elastic deformation and move away from the battery cell 101, thereby reducing the stress on the battery cell 101 caused by the second correction component 103. When the force applied by the first alignment component 03 and the first alignment component is applied, the degree of bending of the battery cell 101 is reduced, which helps to reduce the breakage rate of the battery cell 101. After the battery cell 101 is in the preset position, the first alignment component is driven away from the battery cell 101 to reserve a movable area for the battery cell 101. The second alignment component 103 rebounds and pushes the battery cell 101 to the initial position. This setting is conducive to positioning the battery cell 101 in conjunction with the placement of robots and other related equipment, making it easier for robots and other equipment to grasp the battery cell 101. This reduces the possibility of the welding strip shifting during the subsequent welding of the battery cell 101 and makes the operation simple.

[0074] Those skilled in the art will understand that the above embodiments are specific examples of implementing this application, and in practical applications, various changes in form and detail can be made without departing from the spirit and scope of this application. Any person skilled in the art can make various alterations and modifications without departing from the spirit and scope of this application; therefore, the scope of protection of this application should be determined by the scope defined in the claims.

Claims

1. A battery cell repair device, characterized in that, include: A base plate having a bearing surface for supporting battery cells; A straightening mechanism is used to straighten the battery cell. The straightening mechanism includes a first straightening component and a second straightening component. The first straightening component and the second straightening component are respectively located on opposite sides of the bearing surface. Before straightening the battery cell to be repaired, the battery cell can be gripped by equipment, placed on the bearing surface, and then the solder strip on the battery cell can be removed. After the battery cell is straightened, the solder strip needs to be used to re-weld the battery cell to be repaired. The first alignment component is movable relative to the base plate to push the battery cell toward the second alignment component to a preset position, and the second alignment component undergoes elastic deformation under the pressure of the battery cell. After the battery cell moves to the preset position, the first alignment component can be driven to move away from the battery cell. The second alignment component, in an elastically deformed state, can rebound and push the battery cell from the preset position to an initial position. The initial position is the position of the battery cell before it is aligned by the first alignment component and the second alignment component, so that the position of the battery cell on the base plate is the same when the solder strip is removed and reinstalled.

2. The battery cell repair equipment as described in claim 1, characterized in that, The second correction component includes: Main body; An elastic portion is located inside the main body portion, and one end of the elastic portion is fixedly connected to the main body portion; The first corrective part is connected to the other end of the elastic part and is located on the side of the elastic part facing the bottom plate; The elastic part can undergo elastic deformation when squeezed by the battery cell; after the battery cell moves to the preset position, the elastic part rebounds and pushes the first correction part to move, so that the first correction part pushes the battery cell from the preset position to the initial position.

3. The battery cell repair equipment as described in claim 2, characterized in that, The elastic part includes a plurality of spaced-apart sub-elastic parts, and the first correction part includes a plurality of spaced-apart first sub-correction parts, each of the first sub-correction parts being connected to one of the elastic parts; wherein at least two adjacent first sub-correction parts are used to push the same battery cell.

4. The battery cell repair equipment as described in claim 3, characterized in that, The first sub-correction part includes: A rotating wheel is connected to the elastic part, wherein the rotating wheel can rotate about its axis and move along the extension direction of the bearing surface.

5. The battery cell repair equipment as described in claim 2, characterized in that, The second correction component also includes: The first driving component is configured to drive the main body or the first straightening component to move before the elastic part undergoes elastic deformation due to the compression of the battery cell, so as to push the battery cell to perform preliminary straightening of the battery cell, and to stop driving the main body or the first straightening component to move after the preliminary straightening.

6. The battery cell repair equipment as described in claim 1, characterized in that, The first correction component includes: The second alignment part is movable relative to the base plate; The second driving component is used to drive the second straightening part to move toward the base plate before the second straightening component undergoes elastic deformation due to the compression of the battery cell, so as to push the battery cell toward the second straightening component to the preset position, and after the battery cell moves to the preset position, drive the second straightening part to move away from the battery cell.

7. The battery cell repair equipment as described in claim 6, characterized in that, The base plate includes: a through hole penetrating the bearing surface; The battery cell repair equipment also includes: a pipe and an air extraction structure connected to the pipe, wherein the pipe is connected to the through hole; The evacuation structure is not activated before the battery cell moves to the preset position; during the movement of the first correction component away from the battery cell, the evacuation structure is activated to evacuate air from the through hole via the pipe.

8. A method for repairing battery cells, characterized in that, Repairing a battery cell using the battery cell repair equipment as described in any one of claims 1 to 7 includes: Place the battery cells on the support surface; The first alignment component moves toward the base plate and pushes the battery cell toward the second alignment component to a preset position. The second alignment component undergoes elastic deformation after being squeezed by the battery cell, so that the battery cell is subjected to the force applied by the first alignment component and the second alignment component and is aligned. After the battery cell moves to the preset position, the first alignment component moves away from the battery cell; the second alignment component, which is in an elastic deformation state, rebounds to push the battery cell from the preset position to the initial position, which is the position of the battery cell before it is aligned by the first alignment component and the second alignment component.

9. The method for repairing battery cells as described in claim 8, characterized in that, The suction structure does not operate before the battery cell moves to the preset position; the suction structure operates to evacuate air through the through hole during the movement of the first alignment component away from the battery cell, so that the base plate can adsorb the battery cell. The air extraction structure does not operate during the period when the battery cell moves from the preset position to the initial position.

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