Electroplating apparatus

Abstract

This invention provides a formation apparatus, comprising: a frame having a support portion for supporting battery cells; a connecting device movably mounted on the frame, the connecting device including a housing, a mounting structure, and a conductive element; the housing having a mounting cavity and a through hole communicating with the mounting cavity, the through hole for inserting a tab of the battery cell; the mounting structure being movably mounted within the mounting cavity; and the conductive element mounted on the mounting structure and extending into the through hole for connection with the tab; and a power supply device connected to the conductive element; wherein, when the connecting device descends to the point where the tab is inserted into the through hole, the mounting structure drives the conductive element to move the tab, clamping the tab through the conductive element and the wall of the through hole to form the battery cell. This invention solves the problem of low connection reliability between the formation needle bed and the battery cell in the prior art.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, and more specifically, to a formation apparatus. Background Technology

[0002] Currently, formation is the core step in the battery cell manufacturing process. Its main process involves charging and discharging the battery cell to form an SEI film on the negative electrode surface of the cell. The SEI film can extend the cycle life of the cell and improve its electrochemical properties.

[0003] In the existing technology, the cell formation operation for JTM and pouch batteries uses a formation needle bed. The formation needle bed is usually equipped with a probe module and corresponding wiring harness. The probe module is electrically connected to the power supply equipment through the wiring harness. The probes in the probe module are connected to the positive and negative terminals of the cell. The power supply equipment is electrically connected to the cell through the probe module to charge and discharge the cell.

[0004] However, since the probe and the positive and negative electrodes of the cell are usually only connected by contact, the reliability of the connection between the two is difficult to guarantee. During the reagent formation process of the cell, poor contact or even complete disconnection may occur between the probe and the positive and negative electrodes of the cell, which leads to low formation quality of the cell (i.e., low quality of the generated SEI film) and seriously affects the product quality of the battery. Summary of the Invention

[0005] The main objective of this invention is to provide a positioning component to solve the problem of low reliability of the connection between the formation needle bed and the battery cell in the prior art.

[0006] To achieve the above objectives, the present invention provides a formation apparatus for forming battery cells. The formation apparatus includes: a frame having a support portion for supporting the battery cells; a connecting device movably mounted on the frame, the connecting device including a housing, a mounting structure, and a conductive element; the housing having a mounting cavity and a through hole communicating with the mounting cavity; the through hole for inserting the tabs of the battery cells; the mounting structure being movably mounted within the mounting cavity; and the conductive element mounted on the mounting structure and extending into the through hole for connection with the tabs; and a power supply device connected to the conductive element. When the connecting device descends to the point where the tabs are inserted into the through hole, the mounting structure drives the conductive element to move the tabs, clamping the tabs through the conductive element and the wall of the through hole to form the battery cells.

[0007] Furthermore, the formation equipment also includes: a first driving device, which is driven to connect with the connecting device to drive the connecting device to perform lifting and lowering movements; and a second driving device, which is driven to connect with the mounting structure to drive the mounting structure to move.

[0008] Furthermore, the mounting structure has a first mounting hole, and at least a portion of the conductive element is disposed on the wall of the first mounting hole; wherein, at least a portion of the first mounting hole is connected to a through hole.

[0009] Furthermore, a slide rail is provided on the bottom wall of the mounting cavity. The mounting structure is plate-shaped and includes a first sub-plate structure and a second sub-plate structure that are connected to each other. The first sub-plate structure is connected to the slide rail so that the mounting structure can be slidably mounted on the bottom wall. The second sub-plate structure is drivenly connected to the second driving device. The first mounting hole is provided on the first sub-plate structure and is spaced apart from the slide rail. The first sub-plate structure and the second sub-plate structure are arranged at an angle.

[0010] Furthermore, the housing also has a through hole communicating with the mounting cavity, and the second sub-plate structure is provided with a second mounting hole; the second driving device is a driving cylinder and includes a first cylinder body and a first piston rod. The first cylinder body is disposed on the housing, and the first piston rod passes through the through hole and extends into the second mounting hole to connect with the second sub-plate structure.

[0011] Furthermore, the housing also has a third mounting hole communicating with the mounting cavity, and the mounting structure is provided with a clearance hole. The connecting device also includes a suction structure, which passes through the third mounting hole. One end of the suction structure passes through the clearance hole and communicates with the suction device, and the other end of the suction structure is located outside the housing. When the connecting device descends to the point where at least part of the tabs pass through the through hole, the end of the suction structure located outside the housing extends into the liquid inlet hole of the battery cell to draw at least part of the gas inside the battery cell to the outside of the battery cell.

[0012] Furthermore, the suction structure includes: a tubular portion; a suction nozzle, sleeved on one end of the tubular portion, the suction nozzle being installed in a third mounting hole, at least a portion of the suction nozzle being located outside the housing and extending into the liquid inlet hole, the other end of the tubular portion passing through a clearance hole and communicating with the suction device; wherein, at least a portion of the suction nozzle is made of an elastic material, and along the descending direction of the connecting device, the diameter of the suction nozzle gradually decreases, and the maximum diameter of the suction nozzle is greater than the diameter of the liquid inlet hole.

[0013] Furthermore, the first driving device is a driving cylinder and includes a second cylinder body and a second piston rod. The frame includes a top plate and a base. The bearing part is disposed on the base. One of the second cylinder body and the second piston rod is connected to the top plate, and the other of the second cylinder body and the second piston rod is connected to the base. The connecting device is disposed on the top plate and moves synchronously with the top plate.

[0014] Furthermore, the frame also includes: a support structure, which includes a cylindrical part and a rod-shaped part. The cylindrical part is disposed on the base, one end of the rod-shaped part is connected to the top plate, and the other end of the rod-shaped part is slidably disposed inside the cylindrical part. The rod-shaped part and the cylindrical part are coaxially arranged; and a limiting rod, which is disposed on the base. The end of the limiting rod away from the base is used to limit and stop with the top plate.

[0015] Furthermore, the outer peripheral surface of the housing is provided with heat dissipation holes that communicate with the mounting cavity; wherein, there are multiple heat dissipation holes, which are spaced apart along the length and / or width and / or height of the housing; and / or, the formation device also includes a sealing structure, which is disposed between the inner wall of the nozzle and the outer peripheral surface of the tubular part.

[0016] According to the technical solution of this invention, a formation device is used to form battery cells. The frame of the formation device has a support portion for supporting the battery cells. A connecting device is movably mounted on the frame and includes a housing, a mounting structure, and a conductive element. The housing has a mounting cavity and a through hole communicating with the mounting cavity. The through hole is used to insert the electrode tab of the battery cell. The mounting structure is movably mounted in the mounting cavity. The conductive element is mounted on the mounting structure and extends into the through hole for connection with the electrode tab. A power supply device is connected to the conductive element. When the connecting device descends until the electrode tab is inserted into the through hole, the mounting structure drives the conductive element to move the electrode tab, clamping the electrode tab through the conductive element and the wall of the through hole to form the battery cell. In this way, during the cell formation process, the operator can first lower the connecting device to allow the cell's tabs to pass through the insertion hole. Then, the mounting structure is operated to move the conductive component, which, once inside the insertion hole, pushes the tab until it abuts against the hole wall. This clamps the tab between the conductive component and the hole wall. Because the tab remains clamped throughout the subsequent cell formation process by the power supply unit, the connection reliability between the conductive component and the tab is ensured. This solves the problem of low connection reliability between the formation needle bed and the battery cell in existing technologies, improving battery product quality. Furthermore, the operator can adjust the movement distance of the mounting structure to allow the conductive component to clamp tabs of different specifications and sizes, thus improving the versatility of the formation equipment. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A three-dimensional structural schematic diagram of the chemical formation device according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 Enlarged schematic diagram of point A in the chemical formation equipment;

[0020] Figure 3 It shows Figure 1 A front view of the connection device of the chemical formation equipment in the middle;

[0021] Figure 4 It shows Figure 3 The bottom view of the connecting device in the middle;

[0022] Figure 5 It shows Figure 4 Enlarged diagram of point B in the diagram;

[0023] Figure 6 It shows Figure 3 A cross-sectional schematic diagram of the connecting device in the diagram;

[0024] Figure 7 It shows Figure 6 Enlarged diagram of point C in the diagram;

[0025] Figure 8 It shows Figure 3 A cross-sectional view of another location of the connecting device in the diagram;

[0026] Figure 9 It shows Figure 8 Enlarged diagram of point D in the diagram.

[0027] The above figures include the following reference numerals:

[0028] 1. Battery cell; 2. Electrode; 3. Liquid inlet; 10. Frame; 11. Supporting part; 12. Top plate; 13. Base; 14. Support structure; 141. Cylindrical part; 142. Rod-shaped part; 15. Limiting rod; 20. Connecting device; 21. Housing; 211. Through hole; 212. Through hole; 213. Third mounting hole; 214. Heat dissipation hole; 22. Mounting structure; 221. First mounting hole; 222. First sub-plate structure; 223. Second sub-plate structure; 2231. Second mounting hole; 224. Clearance hole; 23. Conductive component; 30. First driving device; 31. Second cylinder; 32. Second piston rod; 40. Second driving device; 41. First cylinder; 42. First piston rod; 50. Slide rail; 60. Suction structure; 61. Tubular part; 62. Suction nozzle. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] In this invention, unless otherwise stated, directional terms such as "up" and "down" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0032] To address the issue of low connection reliability between the formation needle bed and the battery cell in the prior art, this application provides a formation device.

[0033] like Figures 1 to 9 As shown, the formation equipment is used to form the battery cell 1. The formation equipment includes a frame 10, a connecting device 20, and a power supply device. The frame 10 has a support portion 11 for supporting the battery cell 1. The connecting device 20 is vertically mounted on the frame 10 and includes a housing 21, a mounting structure 22, and a conductive element 23. The housing 21 has a mounting cavity and a through hole 211 communicating with the mounting cavity. The through hole 211 is used to pass through the tab 2 of the battery cell 1. The mounting structure 22 is movably mounted in the mounting cavity. The conductive element 23 is mounted on the mounting structure 22 and extends into the through hole 211 for connection with the tab 2. The power supply device is connected to the conductive element 23. When the connecting device 20 descends until the tab 2 passes through the through hole 211, the mounting structure 22 drives the conductive element 23 to push the tab 2, clamping the tab 2 through the conductive element 23 and the wall of the through hole 211 to form the battery cell 1.

[0034] Using the technical solution of this embodiment, a formation device is used to form the battery cell 1. The frame 10 of the formation device has a support part 11 for supporting the battery cell 1. A connecting device 20 is movably mounted on the frame 10. The connecting device 20 includes a housing 21, a mounting structure 22, and a conductive element 23. The housing 21 has a mounting cavity and a through hole 211 communicating with the mounting cavity. The through hole 211 is used to pass through the tab 2 of the battery cell 1. The mounting structure 22 is movably mounted in the mounting cavity. The conductive element 23 is mounted on the mounting structure 22 and extends into the through hole 211 for connection with the tab 2. A power supply device is connected to the conductive element 23. When the connecting device 20 descends to the point where the tab 2 passes through the through hole 211, the mounting structure 22 drives the conductive element 23 to push the tab 2 to move. The tab 2 is clamped by the conductive element 23 and the wall of the through hole 211 to form the battery cell 1. In this way, during the formation of cell 1, the operator can first lower the connecting device 20 to allow the tab 2 of cell 1 to pass through the through hole 211. Then, the mounting structure 22 is operated to move the conductive element 23. The conductive element 23, which extends into the through hole 211, pushes the tab 2 until it abuts against the wall of the through hole 211. This clamps the tab 2 between the conductive element 23 and the wall of the through hole 211. Since the tab 2 remains clamped during the subsequent formation process of cell 1 by the power supply device, the reliability of the connection between the conductive element 23 and the tab 2 is ensured. This solves the problem of low connection reliability between the formation needle bed and the battery cell in the prior art, improving the product quality of the battery. At the same time, the operator can adjust the movement distance of the mounting structure 22 to allow the conductive element 23 to clamp tabs of different specifications and sizes, thereby improving the versatility of the formation equipment.

[0035] In this embodiment, the conductive component 23 is a copper busbar. This arrangement eliminates the need for a complex probe module within the connecting device 20. The lightweight copper busbar significantly simplifies the wiring harness arrangement within the formation equipment, reduces heat generation during operation, and consequently slows down the aging of components, extending the lifespan of the formation equipment. Furthermore, it simplifies the structure of the conductive component 23, making it easier to manufacture and implement, thereby reducing the manufacturing cost and ease of processing for operators.

[0036] In this embodiment, the formation equipment also includes a cell tray, on which the cell 1 is placed and on the support portion 11.

[0037] like Figure 1As shown, the chemical formation equipment also includes a first drive device 30 and a second drive device 40. The first drive device 30 is driven to connect to the connecting device 20 to drive the connecting device 20 to move vertically. The second drive device 40 is driven to connect to the mounting structure 22 to drive the mounting structure 22 to move. In this way, the chemical formation equipment can automatically drive the connecting device 20 to move vertically via the first drive device 30, and can automatically drive the mounting structure 22 to move the conductive component 23 via the second drive device 40, thereby improving the automation level of the chemical formation equipment and reducing the difficulty of operation for workers.

[0038] Optionally, the formation device also includes a control module, which is connected to both the first drive device 30 and the second drive device 40 to control the operating status of the first drive device 30 and the second drive device 40, thereby realizing the automatic start and stop of the first drive device 30 and the second drive device 40.

[0039] like Figure 6 and Figure 7 As shown, the mounting structure 22 has a first mounting hole 221, and at least a portion of the conductive element 23 is disposed on the wall of the first mounting hole 221. At least a portion of the first mounting hole 221 is connected to the through hole 211. Thus, this arrangement allows the conductive element 23 to be mounted on the mounting structure 22 via the first mounting hole 221; furthermore, when the descent distance of the connecting device 20 is too large, the tab 2 can pass through the through hole 211 and extend into the first mounting hole 221, preventing the tab 2 from colliding with the mounting structure 22 and thus avoiding bending or damage to the tab 2, thereby improving the operational reliability of the formation equipment.

[0040] Optionally, there are multiple first mounting holes 221 and multiple conductive elements 23. The multiple first mounting holes 221 are spaced apart along the length and width directions of the mounting structure 22, and the multiple conductive elements 23 are arranged in a one-to-one correspondence with the multiple first mounting holes 221. In this way, the above arrangement enables the connecting device 20 to connect multiple battery cells 1 at one time, so that the formation equipment can simultaneously form multiple battery cells 1, thereby improving the formation efficiency of the formation equipment.

[0041] like Figure 6 and Figure 8As shown, a slide rail 50 is provided on the bottom wall of the mounting cavity. The mounting structure 22 is plate-shaped and includes a first sub-plate structure 222 and a second sub-plate structure 223 connected to each other. The first sub-plate structure 222 is connected to the slide rail 50 so that the mounting structure 22 can be slidably mounted on the bottom wall. The second sub-plate structure 223 is drivenly connected to the second driving device 40. A first mounting hole 221 is provided on the first sub-plate structure 222 and spaced apart from the slide rail 50. The first sub-plate structure 222 and the second sub-plate structure 223 are arranged at an angle. In this way, the mounting structure 22 can be slidably mounted on the bottom wall of the mounting cavity via the slide rail 50. During the sliding process of the mounting structure 22 driven by the second driving device 40, the slide rail 50 can guide the sliding direction of the mounting structure 22 to ensure the reliable clamping of the conductive element 23 onto the tab 2. Meanwhile, since the mounting structure 22 includes a first sub-plate structure 222 and a second sub-plate structure 223 that are interconnected, the mounting structure 22 can be connected to the second drive device 40 while driving the conductive element 23 to move and clamping the electrode tab 2, thereby making the structure of the mounting structure 22 more compact and reasonable.

[0042] Specifically, the spacing between the first mounting hole 221 and the slide rail 50 can prevent the tab 2 extending into the first mounting hole 221 from contacting or colliding with the slide rail 50, which would cause the tab 2 to bend or be damaged, thus further improving the operational reliability of the formation equipment.

[0043] In this embodiment, the first sub-plate structure 222 and the second sub-plate structure 223 are arranged at a 90-degree angle so that the arrangement positions of the first sub-plate structure 222 and the second sub-plate structure 223 can match the arrangement positions of the through hole 211 and the second driving device 40, respectively.

[0044] It should be noted that the included angle between the first sub-plate structure 222 and the second sub-plate structure 223 is not limited to this value and can be adjusted according to working conditions and usage requirements. Optionally, the included angle between the first sub-plate structure 222 and the second sub-plate structure 223 can be 45°, 60°, 75°, 105°, 120°, or 135°.

[0045] like Figure 6 and Figure 8As shown, the housing 21 also has a through hole 212 communicating with the mounting cavity, and the second sub-plate structure 223 is provided with a second mounting hole 2231. The second driving device 40 is a driving cylinder and includes a first cylinder body 41 and a first piston rod 42. The first cylinder body 41 is disposed on the housing 21, and the first piston rod 42 passes through the through hole 212 and extends into the second mounting hole 2231 to connect with the second sub-plate structure 223. In this way, the above arrangement allows the first piston rod 42 to connect with the second sub-plate structure 223 located in the mounting cavity through the through hole 212 and the second mounting hole 2231; on the other hand, it makes the structure of the second driving device 40 simpler, easier to process and implement, thereby reducing the processing cost of the second driving device 40 and the processing difficulty for workers.

[0046] In this embodiment, the second driving device 40 is a cylinder in the driving cylinder.

[0047] In this embodiment, the slide rail 50 is an adjustable slide rail to serve as a cylinder anti-fool function, thereby preventing the second drive device 40 from losing control due to the propulsion stroke exceeding the control range, thus improving the operational stability of the formation equipment.

[0048] like Figure 8 and Figure 9 As shown, the housing 21 also has a third mounting hole 213 communicating with the mounting cavity. The mounting structure 22 is provided with a clearance hole 224. The connecting device 20 also includes a suction structure 60, which passes through the third mounting hole 213. One end of the suction structure 60 passes through the clearance hole 224 and communicates with the suction device, while the other end of the suction structure 60 is located outside the housing 21. When the connecting device 20 descends until at least part of the tab 2 passes through the through hole 211, the end of the suction structure 60 located outside the housing 21 extends into the liquid inlet hole 3 of the cell 1 to draw at least part of the gas inside the cell 1 to the outside of the cell 1. In this way, the suction structure 60 can draw the gas generated by the cell 1 during the formation process to the outside of the cell 1, thereby achieving a negative pressure formation process for the cell 1, improving the quality of the SEI film formation inside the cell 1, and thus improving the product quality of the battery. Meanwhile, by setting the clearance hole 224, the suction structure 60 can pass through the mounting structure 22 to communicate with the suction device, thereby making the structure of the mounting structure 22 more compact and reasonable.

[0049] In this embodiment, the clearance hole 224 is offset from the first mounting hole 221.

[0050] like Figure 8 and Figure 9As shown, the suction structure 60 includes a tubular portion 61 and a suction nozzle 62. The suction nozzle 62 is fitted onto one end of the tubular portion 61 and is installed in the third mounting hole 213. At least a portion of the suction nozzle 62 is located outside the housing 21 and extends into the liquid inlet hole 3. The other end of the tubular portion 61 passes through the clearance hole 224 and communicates with the suction device. At least a portion of the suction nozzle 62 is made of an elastic material. Along the descent direction of the connecting device 20, the diameter of the suction nozzle 62 gradually decreases, with the maximum diameter of the suction nozzle 62 being larger than the diameter of the liquid inlet hole 3. Thus, during the descent of the connecting device 20, this arrangement ensures that the suction nozzle 62 extending into the liquid inlet hole 3 can deform under the pressure of the hole wall, guaranteeing a tight connection between the suction nozzle 62 and the liquid inlet hole 3. Furthermore, it prevents the suction nozzle 62 from fully extending into the liquid inlet hole 3, thus avoiding contact with the solution inside the battery cell 1 and affecting the composition of the solution inside the battery cell 1.

[0051] In this embodiment, the suction nozzle 62 is made of rubber material.

[0052] Optionally, the first driving device 30 is a driving cylinder and includes a second cylinder body 31 and a second piston rod 32. The frame 10 includes a top plate 12 and a base 13. The supporting part 11 is disposed on the base 13. One of the second cylinder body 31 and the second piston rod 32 is connected to the top plate 12, and the other of the second cylinder body 31 and the second piston rod 32 is connected to the base 13. The connecting device 20 is disposed on the top plate 12 and moves synchronously with the top plate 12. This arrangement allows the first driving device 30 to drive the top plate 12 to move, thereby moving the connecting device 20 disposed on the top plate 12. Furthermore, it allows for more flexible and diverse placement of the second cylinder body 31 and the second piston rod 32 to adapt to different working conditions and usage requirements, thereby improving the processing flexibility of the operator.

[0053] In this embodiment, the second cylinder 31 is mounted on the top plate 12, and the second piston rod 32 is connected to the base 13.

[0054] In other embodiments not shown in the accompanying drawings, the second cylinder is mounted on the base, and the second piston rod is connected to the top plate.

[0055] In this embodiment, the first driving device 30 is a cylinder in the driving cylinder.

[0056] like Figure 1As shown, the frame 10 also includes a support structure 14 and a limiting rod 15. The support structure 14 includes a cylindrical portion 141 and a rod-shaped portion 142. The cylindrical portion 141 is mounted on the base 13. One end of the rod-shaped portion 142 is connected to the top plate 12, and the other end of the rod-shaped portion 142 is slidably mounted inside the cylindrical portion 141. The rod-shaped portion 142 and the cylindrical portion 141 are coaxially arranged. The limiting rod 15 is mounted on the base 13, and the end of the limiting rod 15 away from the base 13 is used to limit and stop the top plate 12. In this way, during the lifting and lowering movement of the top plate 12 to drive the lifting and lowering movement of the connecting device 20, the rod-shaped portion 142 can slide relative to the cylindrical portion 141 to support the top plate 12 while adapting to changes in the distance between the top plate 12 and the base 13. At the same time, by setting the limiting rod 15, the descent distance of the top plate 12 can be prevented from being too large, which could cause the connecting device 20 to crush the battery cell 1, thereby improving the operational reliability of the formation equipment.

[0057] In this embodiment, the rod-shaped portion 142 has a maximum extension length. When the rod-shaped portion 142 is at its maximum extension length, it can pull and limit the top plate 12 to prevent it from failing, thereby preventing the first drive device 30 from losing control due to the propulsion stroke exceeding the control range, thus improving the operational stability of the formation equipment.

[0058] Optionally, the outer peripheral surface of the housing 21 is also provided with heat dissipation holes 214 communicating with the mounting cavity. Multiple heat dissipation holes 214 are provided, spaced apart along the length and / or width and / or height directions of the housing 21; and / or, the formation device also includes a sealing structure disposed between the inner wall of the suction nozzle 62 and the outer peripheral surface of the tubular portion 61. In this way, the above-mentioned arrangement allows for timely heat transfer within the mounting cavity through the heat dissipation holes 214, preventing heat accumulation and thus avoiding overheating and accelerated aging of components within the mounting cavity, thereby extending the service life of the connecting device 20. Furthermore, the sealing structure seals the gap between the suction nozzle 62 and the tubular portion 61, improving the negative pressure suction effect of the suction structure 60 on the battery cell 1.

[0059] In this embodiment, a plurality of heat dissipation holes 214 are spaced apart along the length of the housing 21.

[0060] In this embodiment, the sealing structure is a sealing ring.

[0061] Optionally, the compression of the sealing ring needs to be greater than 2 mm.

[0062] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0063] The formation equipment is used to form battery cells. The frame of the formation equipment has a support section for supporting the battery cells. A connecting device is movably mounted on the frame and includes a housing, a mounting structure, and a conductive component. The housing has a mounting cavity and a through-hole communicating with the mounting cavity. The through-hole is used to insert the electrode tab of the battery cell. The mounting structure is movably mounted within the mounting cavity. The conductive component is mounted on the mounting structure and extends into the through-hole for connection with the electrode tab. A power supply device is connected to the conductive component. When the connecting device descends until the electrode tab is inserted into the through-hole, the mounting structure drives the conductive component to move the electrode tab, clamping it between the conductive component and the wall of the through-hole to form the battery cell. In this way, during the cell formation process, the operator can first lower the connecting device to allow the cell's tabs to pass through the insertion hole. Then, the mounting structure is operated to move the conductive component, which, once inside the insertion hole, pushes the tab until it abuts against the hole wall. This clamps the tab between the conductive component and the hole wall. Because the tab remains clamped throughout the subsequent cell formation process by the power supply unit, the connection reliability between the conductive component and the tab is ensured. This solves the problem of low connection reliability between the formation needle bed and the battery cell in existing technologies, improving battery product quality. Furthermore, the operator can adjust the movement distance of the mounting structure to allow the conductive component to clamp tabs of different specifications and sizes, thus improving the versatility of the formation equipment.

[0064] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0065] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0066] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A formation apparatus for forming a battery cell (1), characterized in that, The formation equipment includes: The frame (10) has a support part (11) for supporting the battery cell (1); A connecting device (20) is movably mounted on the frame (10). The connecting device (20) includes a housing (21), a mounting structure (22), and a conductive element (23). The housing (21) has a mounting cavity and a through hole (211) communicating with the mounting cavity. The through hole (211) is used to pass through the tab (2) of the battery cell (1). The mounting structure (22) is movably mounted in the mounting cavity. The conductive element (23) is mounted on the mounting structure (22) and extends into the through hole (211) for connection with the tab (2). A power supply device is connected to the conductive element (23); When the connecting device (20) descends to the point where the tab (2) passes through the through hole (211), the mounting structure (22) drives the conductive element (23) to push the tab (2) to move, and clamps the tab (2) through the conductive element (23) and the hole wall of the through hole (211) to form the battery cell (1).

2. The chemical formation equipment according to claim 1, characterized in that, The chemical formation equipment also includes: A first driving device (30) is drivingly connected to the connecting device (20) to drive the connecting device (20) to perform lifting and lowering movements; A second driving device (40) is connected to the mounting structure (22) for driving the mounting structure (22) to move.

3. The chemical formation equipment according to claim 2, characterized in that, The mounting structure (22) has a first mounting hole (221), and at least a portion of the conductive element (23) is disposed on the hole wall of the first mounting hole (221); wherein at least a portion of the first mounting hole (221) is connected to the through hole (211).

4. The chemical formation equipment according to claim 3, characterized in that, The mounting cavity has a slide rail (50) on its bottom wall. The mounting structure (22) is plate-shaped and includes a first sub-plate structure (222) and a second sub-plate structure (223) that are connected to each other. The first sub-plate structure (222) is connected to the slide rail (50) so that the mounting structure (22) is slidably mounted on the bottom wall. The second sub-plate structure (223) is driven to connect with the second driving device (40). The first mounting hole (221) is disposed on the first sub-plate structure (222) and spaced apart from the slide rail (50), and the first sub-plate structure (222) and the second sub-plate structure (223) are arranged at an angle.

5. The chemical formation equipment according to claim 4, characterized in that, The housing (21) also has a through hole (212) communicating with the mounting cavity, and the second sub-plate structure (223) is provided with a second mounting hole (2231); The second drive device (40) is a drive cylinder and includes a first cylinder body (41) and a first piston rod (42). The first cylinder body (41) is disposed on the housing (21). The first piston rod (42) passes through the through hole (212) and extends into the second mounting hole (2231) to connect with the second subplate structure (223).

6. The chemical formation equipment according to claim 1, characterized in that, The housing (21) also has a third mounting hole (213) communicating with the mounting cavity, the mounting structure (22) is provided with a clearance hole (224), and the connecting device (20) further includes: A suction structure (60) is installed in the third mounting hole (213). One end of the suction structure (60) passes through the clearance hole (224) and communicates with the suction device. The other end of the suction structure (60) is located outside the housing (21). When the connecting device (20) descends to the point where at least part of the tab (2) passes through the through hole (211), one end of the suction structure (60) located outside the housing (21) extends into the liquid inlet (3) of the battery cell (1) to draw at least part of the gas inside the battery cell (1) to the outside of the battery cell (1).

7. The chemical formation equipment according to claim 6, characterized in that, The suction structure (60) includes: Tubular portion (61); A suction nozzle (62) is sleeved on one end of the tubular part (61). The suction nozzle (62) is installed in the third mounting hole (213). At least part of the suction nozzle (62) is located outside the housing (21) and extends into the liquid inlet hole (3). The other end of the tubular part (61) passes through the clearance hole (224) and communicates with the suction device. At least a portion of the suction nozzle (62) is made of an elastic material. The diameter of the suction nozzle (62) gradually decreases along the downward direction of the connecting device (20), and the maximum diameter of the suction nozzle (62) is greater than the diameter of the liquid inlet (3).

8. The chemical formation equipment according to claim 2, characterized in that, The first driving device (30) is a driving cylinder and includes a second cylinder body (31) and a second piston rod (32). The frame (10) includes a top plate (12) and a base (13). The bearing part (11) is disposed on the base (13). One of the second cylinder body (31) and the second piston rod (32) is connected to the top plate (12), and the other of the second cylinder body (31) and the second piston rod (32) is connected to the base (13). The connecting device (20) is disposed on the top plate (12) and moves synchronously with the top plate (12).

9. The chemical formation equipment according to claim 8, characterized in that, The rack (10) also includes: The support structure (14) includes a cylindrical part (141) and a rod-shaped part (142). The cylindrical part (141) is disposed on the base (13). One end of the rod-shaped part (142) is connected to the top plate (12). The other end of the rod-shaped part (142) is slidably disposed inside the cylindrical part (141). The rod-shaped part (142) and the cylindrical part (141) are coaxially disposed. A limiting rod (15) is provided on the base (13), and the end of the limiting rod (15) away from the base (13) is used to limit and stop the top plate (12).

10. The chemical formation apparatus according to claim 7, characterized in that, The outer peripheral surface of the housing (21) is also provided with heat dissipation holes (214) communicating with the mounting cavity; wherein, there are multiple heat dissipation holes (214), and the multiple heat dissipation holes (214) are spaced apart along the length direction and / or width direction and / or height direction of the housing (21); and / or, The chemical formation device further includes a sealing structure disposed between the inner wall of the suction nozzle (62) and the outer peripheral surface of the tubular portion (61).

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