Tab repairing device and battery production line

Abstract

The utility model relates to the technical field of battery manufacturing, and discloses a tab repairing device and a battery production line. The tab repairing device comprises a repairing table, one side of the repairing table is provided with a first accommodating groove and a second accommodating groove, the first accommodating groove is communicated with the second accommodating groove, a step surface is formed between the first accommodating groove and the second accommodating groove, the first accommodating groove is used for placing a main body part of an electrode assembly, and the second accommodating groove is used for accommodating a tab of the electrode assembly; the fixing mechanism comprises a first fixing piece, and the first fixing piece is used for being arranged between the side, away from the second containing groove, of the electrode assembly and the inner wall face of the second containing groove and used for driving the main body part of the electrode assembly to abut against the step face; and the repairing mechanism is used for fixing the tab repairing material on the cracking part of the tab. According to the technical scheme, the cracked tab can be repaired, the waste of materials is reduced, and the production cost of the battery device is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery manufacturing, in particular to an electrode tab repairing device and a battery production line. BACKGROUND

[0002] This part provides only background information related to the present disclosure, which is not necessarily prior art.

[0003] At present, in the battery production process, the electrode tab cracking phenomenon of the electrode assembly occurs from time to time, and in the usual case, the electrode tab cracking leads to the electrode assembly being directly treated as scrap, resulting in a large amount of material and cost loss. Therefore, how to effectively repair the electrode tab cracking part of the electrode assembly is crucial. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide an electrode tab repairing device and a battery production line to repair the cracked electrode tab, thereby reducing the cost loss in the battery production process. The purpose is achieved by the following technical solutions:

[0005] In a first aspect, the present application provides an electrode tab repairing device, comprising: a repairing table, one side of the repairing table is provided with a first accommodating groove and a second accommodating groove, the first accommodating groove and the second accommodating groove are communicated, and a step surface is formed between the first accommodating groove and the second accommodating groove, the first accommodating groove is used for placing a main body part of an electrode assembly, and the second accommodating groove is used for accommodating an electrode tab of the electrode assembly; a fixing mechanism, the fixing mechanism comprises a first fixing piece, the first fixing piece is used for being arranged between a side of the electrode assembly away from the second accommodating groove and an inner wall surface of the first accommodating groove, and is used for making the main body part of the electrode assembly abut against the step surface;

[0006] A repairing mechanism is arranged on one side of the repairing table, and the repairing mechanism is used for fixing an electrode tab repairing material to a cracking part of the electrode tab.

[0007] According to the electrode tab repairing device provided by the present application, the first accommodating groove and the second accommodating groove which are communicated are arranged on one side of the repairing table, a step surface is formed between the first accommodating groove and the second accommodating groove, when the electrode assembly is placed in the first accommodating groove, the electrode tab of the electrode assembly can be accommodated in the second accommodating groove, at this time, the first fixing piece can be arranged on the side of the electrode assembly away from the second accommodating groove and abut against the inner wall surface of the first accommodating groove, and the first fixing piece can drive the electrode assembly to abut against the step surface, so that the electrode assembly can be fixed. After the electrode assembly is fixed, the repairing mechanism is used to fix the electrode tab repairing material to the cracking part of the electrode tab, so as to repair the cracking part of the electrode tab, thereby improving the problem that the electrode assembly is directly scrapped due to the electrode tab cracking in the battery production process, and reducing the problems of waste of production materials and increase of production cost.

[0008] In addition, the tab repairing device provided in the present application can further have the following additional technical features:

[0009] In some embodiments of the present application, the fixing mechanism further comprises a second fixing member and a third fixing member, which are respectively arranged to abut against both sides of the electrode assembly along a first direction to jointly clamp the electrode assembly; wherein the first accommodating groove and the second accommodating groove are arranged along a second direction, and the first direction and the second direction are arranged to intersect.

[0010] In the above technical solution, after the electrode assembly is placed in the first accommodating groove, the second fixing member and the third fixing member can jointly clamp the electrode assembly by being arranged on both sides of the electrode assembly along the first direction, so as to limit the movement of the electrode assembly along the first direction, thereby further improving the stability of the electrode assembly being fixed and the stability of the repairing mechanism when repairing the defective part of the tab.

[0011] In some embodiments of the present application, the first fixing member, the second fixing member and the third fixing member all comprise a telescopic rod assembly, which comprises an abutting member and a telescopic rod, one end of the telescopic rod being connected with the abutting member and the other end being arranged to abut against the inner wall surface of the first accommodating groove, and the telescopic rod is elongated or shortened to make the abutting member abut against the electrode assembly.

[0012] In the above technical solution, when the electrode assembly is placed in the first accommodating groove, one of the telescopic rod assemblies is arranged on the side of the electrode assembly away from the second accommodating groove and abuts against one of the inner wall surfaces of the first accommodating groove along the second direction, and the telescopic rod is elongated to drive the abutting member to abut against the side of the electrode assembly, so as to abut the electrode assembly against the stepped surface. The other two telescopic rod assemblies are arranged on both sides of the electrode assembly along the first direction and are elongated to jointly clamp both sides of the electrode assembly along the first direction, so as to fix the electrode assembly along two directions, thereby limiting the movement of the electrode assembly relative to the repairing platform, and further improving the stability of the repairing mechanism when repairing the tab.

[0013] In some embodiments of the present application, the telescopic rod assembly further comprises a displacement sensor arranged on the telescopic rod, which is used to detect the length of the telescopic rod being extended.

[0014] And / or, the telescopic rod assembly further comprises a pressure sensor arranged on the abutting member, which is used to detect the pressure received by the abutting member.

[0015] In the above technical solution, since the size of the electrode assembly and the size of the first receiving groove are fixed and known, after the electrode assembly is placed in the first receiving groove, the length of the telescopic rod is detected by the displacement sensor on the telescopic rod. When the extension length of the telescopic rod reaches the preset value, it can be determined whether the electrode assembly is reliably fixed, which helps to improve the accuracy of the electrode assembly fixing.

[0016] By installing a pressure sensor on the abutment, when the abutment comes into contact with the electrode assembly, the pressure value detected by the pressure sensor can determine whether the abutment is reliably fixed. This also reduces the risk of the electrode assembly being squeezed and deformed due to excessive pressure, thus helping to improve the safety of fixing the electrode assembly.

[0017] In some embodiments of this application, the abutment member is a flexible member.

[0018] By making the contact element a flexible element, such as a silicone or rubber element, the flexible element can buffer the pressure, thereby further reducing the risk of the electrode assembly being squeezed and deformed or even damaged.

[0019] In some embodiments of this application, the electrode repair device further includes a support base disposed within the second receiving groove for supporting the electrode.

[0020] In the above technical solution, by setting a support seat in the second receiving groove, the support seat can support the electrode tab of the electrode assembly below, thereby stably supporting the electrode tab of the electrode assembly. This reduces the risk of the electrode tab shifting or the repair becoming ineffective due to movement when the repair mechanism repairs the electrode tab.

[0021] In some embodiments of this application, the support base includes a support frame and a plurality of support legs disposed at the bottom of the support frame, the support legs being configured to extend or retract.

[0022] In the above technical solution, the support frame of the support base is supported at the bottom of the electrode tab. By setting multiple extendable or retractable support legs at the bottom of the support frame, the support height of the support frame can be adjusted by extending or retracting the support legs, thereby facilitating stable support of the electrode tab.

[0023] In some embodiments of this application, the stepped surface is provided with a flexible layer.

[0024] By setting a flexible layer on the step surface, the flexible layer can act as a buffer to reduce the risk of damage caused by stress concentration when the electrode assembly is pressed against the step surface.

[0025] In some embodiments of this application, the repair mechanism includes a welding device, which includes a welding head for welding tab repair material to the cracked portion of the tab.

[0026] In the above technical solution, the repair mechanism may include a welding device. When the defective part of the electrode tab results in the loss of electrode tab material due to cracking, the welding device can be used to weld electrode tab repair material with the same shape and contour as the electrode tab to be repaired to the defective part of the electrode tab, thereby achieving the repair of the electrode tab. The electrode tab repair material is made of the same material as the electrode tab to be repaired, and the electrode tab repair material can be welded to opposite sides of the defective part of the electrode tab.

[0027] In some embodiments of this application, the repair mechanism includes an adhesive device, which includes an adsorption element for adsorbing tab repair material and adhering the tab repair material to the cracked portion of the tab.

[0028] In the above technical solution, the repair mechanism may include an adhesive device. When the defective part of the electrode tab is cracked due to cracking and there is no missing electrode tab material, the adhesive device can be used to adhere electrode tab repair material to the defective part of the electrode tab, for example, by adhering a thin conductive high-temperature adhesive. Specifically, thin conductive high-temperature adhesive can be adhered to both opposite sides of the defective part of the electrode tab.

[0029] Secondly, this application also provides a battery production line, including a tab repair device according to any one of the embodiments of the first aspect.

[0030] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure of the tab repair device provided in some embodiments of this application;

[0033] in, Figure 1 In the coordinate system, the X-axis represents the first direction, and the Y-axis represents the second direction.

[0034] The attached figures are labeled as follows:

[0035] 100. Electrode repair device; 200. Electrode assembly; 201. Electrode;

[0036] 10. Repair platform; 11. First receiving groove; 12. Second receiving groove; 13. Step surface; 21. First fixing member; 211. Abutting member; 212. Telescopic rod; 22. Second fixing member; 23. Third fixing member; 30. Repair mechanism; 40. Support base; 41. Support frame; 42. Support leg. Detailed Implementation

[0037] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0039] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0040] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0042] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0043] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0044] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0045] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of the application areas of battery devices, the market demand is also constantly increasing.

[0046] Battery devices typically consist of multiple battery cells, each containing an electrode assembly with tabs. Tab cracking is a common occurrence in electrode assemblies, often resulting in the assembly being scrapped and incurring significant material and cost losses. Therefore, effectively repairing cracked tabs on electrode assemblies is crucial.

[0047] To address the problem of electrode assemblies being scrapped due to tab cracking, resulting in significant material and cost losses, this application proposes a tab repair device. This device can repair cracked tabs, thus mitigating the material waste and increased costs caused by direct scrapping due to tab cracking.

[0048] The tab repair device disclosed in this application is used in a battery production line, specifically for repairing cracked tabs when they occur in the electrode assembly.

[0049] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of an electrode repair device provided in some embodiments of this application. Embodiments of this application provide an electrode repair device 100, including: a repair platform 10, a fixing mechanism, and a repair mechanism 30. The repair platform 10 has a first receiving groove 11 and a second receiving groove 12 on one side, which are connected. A stepped surface 13 is formed between the first receiving groove 11 and the second receiving groove 12. The first receiving groove 11 is used to place the main body of an electrode assembly 200, and the second receiving groove 12 is used to accommodate the electrode tab 201 of the electrode assembly 200. The fixing mechanism includes a first fixing member 21, which is disposed between the side of the electrode assembly 200 away from the second receiving groove 12 and the inner wall surface of the first receiving groove 11, and is used to abut the main body of the electrode assembly 200 against the stepped surface 13. The repair mechanism 30 is disposed on one side of the repair platform 10 and is used to fix the electrode repair material to the cracked portion of the electrode tab 201.

[0050] Specifically, along the first direction, the size of the first receiving groove 11 is smaller than the size of the second receiving groove 12, so that a stepped surface 13 is formed between the first receiving groove 11 and the second receiving groove 12. The first receiving groove 11 and the second receiving groove 12 are arranged along the second direction, and the first direction and the second direction intersect.

[0051] For example, the first receiving groove 11 and the second receiving groove 12 are milled grooves formed by milling a portion of the structure on one side of the repair table 10 in the thickness direction. The bottom wall surfaces of the first receiving groove 11 and the second receiving groove 12 are located on the same plane. For example, there are two stepped surfaces 13, located on both sides of the second positioning groove along the first direction.

[0052] For example, the electrode assembly 200 can be a wound structure, a stacked structure, or a hybrid structure of wound and stacked. The electrode assembly 200 has a main body and electrode tabs connected to the main body, the electrode tabs including a positive electrode tab and a negative electrode tab.

[0053] In some embodiments, the electrode assembly 200 is a wound structure. The positive electrode, the separator, and the negative electrode are wound into a wound structure, with a positive tab at the end of the positive electrode and a negative tab at the end of the negative electrode.

[0054] For example, the first fixing member 21 can be a telescopic rod assembly or a linear motor, etc.

[0055] For example, the repair mechanism 30 may include at least one of an ultrasonic welding device and an adhesive bonding device.

[0056] For example, the tab repair material is made of the same material as the tab 201, such as aluminum foil or copper foil. The tab repair material can be in sheet form and can partially or completely cover the tab 201 depending on the shape or size of the defective part of the tab 201.

[0057] According to the tab repair device 100 provided in this application, by providing a first receiving groove 11 and a second receiving groove 12 connected on one side of the repair table 10, a stepped surface 13 is formed between the first receiving groove 11 and the second receiving groove 12. When the electrode assembly 200 is placed in the first receiving groove 11, the tab 201 of the electrode assembly 200 can be accommodated in the second receiving groove 12. At this time, the first fixing member 21 can be provided on the side of the electrode assembly 200 away from the second receiving groove 12 and abut against the inner wall surface of the first receiving groove 11. The first fixing member 21 can make the main body of the electrode assembly 200 abut against the stepped surface 13, thereby fixing the electrode assembly 200. After the electrode assembly 200 is fixed, the repair mechanism 30 is used to fix the tab repair material to the cracked part of the tab 201 to repair the cracked part of the tab 201. This improves the problem of direct scrapping caused by the cracking of the tab 201 during the battery production process, thereby reducing the waste of production materials and the increase in production costs.

[0058] According to some embodiments of this application, the fixing mechanism further includes a second fixing member 22 and a third fixing member 23, which are respectively used to abut against both sides of the electrode assembly 200 along the first direction to jointly clamp the electrode assembly 200.

[0059] For example, the second fastener 22 and the third fastener 23 have the same structure.

[0060] After the electrode assembly 200 is placed in the first receiving groove 11, a second fixing member 22 and a third fixing member 23 are respectively provided on both sides of the electrode assembly 200 along the first direction. The second fixing member 22 and the third fixing member 23 can cooperate to clamp the electrode assembly 200 on both sides along the first direction, thereby restricting the movement of the electrode assembly 200 along the first direction, thereby further improving the stability of the electrode assembly 200 in being fixed and improving the stability of the repair mechanism 30 in repairing the defective parts of the electrode tab 201. Furthermore, it can fix electrode assemblies 200 of different sizes.

[0061] According to some embodiments of this application, the first fixing member 21, the second fixing member 22, and the third fixing member 23 all include a telescopic rod assembly, which includes an abutment member 211 and a telescopic rod 212. One end of the telescopic rod 212 is connected to the abutment member 211, and the other end is used to abut against the inner wall surface of the first receiving groove 11. The telescopic rod 212 extends or retracts to allow the abutment member 211 to abut against the electrode assembly 200.

[0062] For example, the abutment 211 is elongated, and may be an abutment block or abutment plate.

[0063] For example, the telescopic rod 212 includes multiple interconnected connecting rods. For instance, adjacent connecting rods are connected by threads, allowing them to extend or shorten, and to lock in position after extension or shortening. For example, the three inner walls of the first receiving groove 11 are provided with positioning grooves, and the end of the telescopic rod away from the abutment is used to abut against the positioning groove.

[0064] After the electrode assembly 200 is placed in the first receiving groove 11, one of the telescopic rod assemblies is located on the side of the electrode assembly 200 away from the second receiving groove 12, and abuts against an inner wall surface of the first receiving groove 11 along the second direction via the telescopic rod 212. If the dimension of the electrode assembly 200 along the second direction is small, the telescopic rod 212 cannot abut the abutment 211 against the side of the electrode assembly 200 at its initial length. In this case, by extending the telescopic rod 212, the abutment 211 can be driven to abut against the side of the electrode assembly 200, thereby abutting the electrode assembly 200 against the stepped surface 13. If the dimension of the electrode assembly 200 along the second direction is large, the telescopic rod 212 needs to be shortened from its initial length to abut the abutment 211 against the side of the electrode assembly 200. The other two telescopic rod assemblies are respectively located on both sides of the electrode assembly 200 along the first direction, and together clamp the electrode assembly 200 along both sides of the first direction by extending the telescopic rods, so as to fix the electrode assembly 200 in both directions, thereby restricting the movement of the electrode assembly 200 relative to the repair table 10, and thus improving the stability of the repair mechanism 30 when repairing the tab 201.

[0065] According to some embodiments of this application, the first fixing member 21, the second fixing member 22, and the third fixing member 23 include a linear motor. The linear motor is fixed in the first receiving groove 11, and the linear motor can extend or retract, thereby abutting against and fixing the electrode assembly 200.

[0066] According to some embodiments of this application, the first fixing member 21, the second fixing member 22, and the third fixing member 23 include an abutment member 211 and a ball screw. The ball screw includes a lead screw and a helical drive member. The helical drive member is sleeved on the lead screw and pivotally connected to the lead screw. When fixing the electrode assembly 200, the abutment member can abut against the electrode assembly 200. When the helical drive member rotates relative to the lead screw, it can reciprocate along the axis of the lead screw to abut against the inner wall surface of the first receiving groove 11, thereby fixing the electrode assembly 200.

[0067] According to some embodiments of this application, the telescopic rod assembly further includes a displacement sensor disposed on the telescopic rod 212 for detecting the extension length of the telescopic rod 212.

[0068] Since the dimensions of the electrode assembly 200 and the first receiving groove 11 are fixed and known, when the electrode assembly 200 is placed in the first receiving groove 11, the length of the telescopic rod 212 is detected by the displacement sensor on the telescopic rod 212. When the extension length of the telescopic rod 212 reaches the preset value, it can be determined whether the electrode assembly 200 is reliably fixed, which helps to improve the accuracy of fixing the electrode assembly 200.

[0069] According to some embodiments of this application, the telescopic rod assembly also includes a pressure sensor disposed on the abutment member 211 for detecting the pressure applied to the abutment member.

[0070] By installing a pressure sensor on the abutment member 211, when the abutment member 211 abuts against the electrode assembly 200, the pressure value detected by the pressure sensor can determine whether the electrode assembly 200 is reliably fixed. This also reduces the risk of deformation of the electrode assembly 200 due to excessive pressure, thus improving the safety of fixing the electrode assembly 200. Furthermore, the two telescopic rod assemblies arranged on both sides of the electrode assembly 200 along the first direction can also determine whether the electrode assembly 200 is reliably fixed by checking whether the displacement and pressure detected by the displacement sensor and pressure sensor are consistent.

[0071] According to some embodiments of this application, the abutment 211 is a flexible element.

[0072] For example, the flexible part is a silicone part or a rubber part.

[0073] By setting the abutment 211 as a flexible element, the flexible element can buffer the pressure, thereby further reducing the risk of the electrode assembly 200 being squeezed and deformed or even damaged.

[0074] According to some embodiments of this application, the tab repair device 100 further includes a support base 40, which is disposed in the second receiving groove 12 and is used to support the tab 201.

[0075] Understandably, the tab 201 includes an anode tab 201 and a cathode tab 201, and the support base 40 is used to support both the anode tab 201 and the cathode tab 201 simultaneously.

[0076] By providing a support base 40 in the second receiving groove 12, the support base 40 can support the electrode tab 201 of the electrode assembly 200 below, thereby stably supporting the electrode tab 201 of the electrode assembly 200. This reduces the risk of the electrode tab 201 shifting or the repair becoming ineffective when the repair mechanism 30 repairs the electrode tab 201.

[0077] According to some embodiments of this application, the support base 40 includes a support frame 41 and a plurality of support legs 42 disposed at the bottom of the support frame 41, the support legs 42 being configured to extend or retract.

[0078] For example, the support frame 41 is a support plate, which can be configured as a mesh plate. Specifically, the support frame 41 is a high-temperature resistant component.

[0079] For example, the support leg 42 may be a retractable support leg.

[0080] Understandably, after the electrode assembly 200 is placed in the first receiving groove 11, there is a gap between the electrode tab 201 of the electrode assembly 200 and the bottom wall of the second receiving groove 12. By supporting the bottom of the electrode tab 201 with the support frame 41 of the support base 40, and by providing multiple extendable or retractable support legs 42 at the bottom of the support frame 41, the support height of the support frame 41 can be adjusted by extending or retracting the support legs 42, so as to facilitate the stable support of the electrode tab 201 and keep the surface where the electrode tab 201 is located horizontal, thereby facilitating the repair mechanism 30 to repair the defect position of the electrode tab 201.

[0081] According to some embodiments of this application, the repair mechanism 30 includes a welding device, which includes a welding head for welding tab repair material to the cracked portion of the tab 201.

[0082] The repair mechanism 30 may include a welding device. When the defective part of the tab 201 is cracked, resulting in the loss of material of the tab 201, the welding device can be used to weld tab repair material with the same shape and outline as the tab 201 to be repaired to the defective part of the tab 201, thereby achieving the repair of the tab 201. The tab repair material is made of the same material as the tab 201 to be repaired, and the tab repair material can be welded to opposite sides of the defective part of the tab 201.

[0083] According to some embodiments of this application, the repair mechanism 30 includes an adhesive device, which includes an adsorption element for adsorbing tab repair material and adhering the tab repair material to the cracked portion of the tab 201.

[0084] The repair mechanism 30 may include an adhesive device. When a crack is formed at the defective part of the tab 201 due to cracking and there is a lack of tab 201 material, the adhesive device can be used to adhere tab repair material to the defective part of the tab 201, for example, by adhering a thin conductive high-temperature adhesive. Specifically, thin conductive high-temperature adhesive can be adhered to both opposite sides of the defective part of the tab 201.

[0085] In some embodiments, the tab repair device 100 further includes a flipping mechanism (not shown) for flipping the electrode assembly. For example, the flipping mechanism may include a base and a robotic arm disposed on the base. The robotic arm has grippers for holding the electrode assembly 200, and the robotic arm can rotate the grippers and the electrode assembly 200 to flip the electrode assembly 200. This allows the electrode assembly 200 to be flipped after tab repair material has been welded or bonded to one side of the tab 201, facilitating the welding or bonding of tab repair material to the other side of the tab, thereby improving the automation level of the product.

[0086] According to some embodiments of this application, the stepped surface 13 is provided with a flexible layer.

[0087] By providing a flexible layer on the step surface 13, the flexible layer can act as a buffer to reduce the risk of damage caused by stress concentration when the electrode assembly 200 is pressed against the step surface 13.

[0088] According to some embodiments of this application, see Figure 1This application provides an electrode tab repair device 100, including a repair platform 10, a fixing mechanism, a support base 40, and a repair mechanism 30. The repair platform 10 has a first receiving groove 11 and a second receiving groove 12 on one side. The first receiving groove 11 and the second receiving groove 12 are arranged along a second direction and are connected. A stepped surface 13 is formed between the first receiving groove 11 and the second receiving groove 12. The first receiving groove 11 is used to place an electrode assembly 200, and the second receiving groove 12 is used to accommodate the electrode tab 201 of the electrode assembly 200. The fixing mechanism includes a first fixing member 21, a second fixing member 22, and a third fixing member 23. The first fixing member 21 is used to be positioned on the side of the electrode assembly 200 opposite to the second receiving groove 12. Between the inner wall of the second receiving groove 12, and for driving the electrode assembly 200 to abut against the stepped surface 13, the second fixing member 22 and the third fixing member 23 are respectively disposed on both sides of the electrode assembly 200 along the first direction, and are used to clamp the electrode assembly 200 in a cooperating manner. The first direction and the second direction are intersected. The support base 40 is disposed in the second receiving groove 12 for supporting the tab 201 of the electrode assembly 200. The repair mechanism 30 includes at least one of an ultrasonic welding device and an adhesive device for welding or adhesiveting the tab repair material to the cracked part of the tab 201. Through the technical solution of this application, the cracked part of the tab 201 can be repaired, which improves the problem of direct scrapping caused by the cracking of the tab 201 in the battery production process, thereby reducing the waste of production materials and the increase in production costs.

[0089] According to some embodiments of this application, this application also provides a battery production line, including the tab repair device 100 according to any one of the above embodiments.

[0090] The battery production line provided in this application includes the tab repair device 100 as described in any of the above embodiments, and therefore has the technical effects of any of the above embodiments, which will not be repeated here.

[0091] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A tab repair device, characterized in that, include: A repair table, wherein a first receiving groove and a second receiving groove are provided on one side of the repair table, the first receiving groove and the second receiving groove are connected, and a stepped surface is formed between the first receiving groove and the second receiving groove. The first receiving groove is used to place the main body of the electrode assembly, and the second receiving groove is used to accommodate the tab of the electrode assembly. A fixing mechanism, the fixing mechanism including a first fixing member, the first fixing member being disposed between the side of the electrode assembly away from the second receiving groove and the inner wall surface of the first receiving groove, and being used to make the main body of the electrode assembly abut against the stepped surface; A repair mechanism is located on one side of the repair platform, and the repair mechanism is used to fix the tab repair material to the cracked part of the tab.

2. The electrode repair device according to claim 1, characterized in that, The fixing mechanism further includes a second fixing member and a third fixing member, the second fixing member and the third fixing member being used to abut against both sides of the electrode assembly along the first direction, so as to clamp the electrode assembly together; The first receiving groove and the second receiving groove are arranged along the second direction, and the first direction intersects with the second direction.

3. The electrode repair device according to claim 2, characterized in that, The first fixing member, the second fixing member, and the third fixing member all include a telescopic rod assembly, the telescopic rod assembly comprising: Attachment; A telescopic rod, one end of which is connected to the abutment, and the other end of which is used to abut against the inner wall of the first receiving groove. The telescopic rod can be extended or shortened to allow the abutment to abut against the electrode assembly.

4. The electrode repair device according to claim 3, characterized in that, The telescopic rod assembly also includes a displacement sensor, which is disposed on the telescopic rod and used to detect the extension length of the telescopic rod. And / or, the telescopic rod assembly further includes a pressure sensor disposed on the abutment member for detecting the pressure applied to the abutment member.

5. The electrode repair device according to claim 3, characterized in that, The abutment component is a flexible component.

6. The electrode repair device according to any one of claims 1-5, characterized in that, The electrode repair device also includes a support base, which is disposed in the second receiving groove and is used to support the electrode.

7. The electrode repair device according to claim 6, characterized in that, The support base includes a support frame and a plurality of support legs disposed at the bottom of the support frame, the support legs being configured to extend or retract.

8. The electrode repair device according to any one of claims 1-5, characterized in that, The stepped surface is provided with a flexible layer.

9. The electrode repair device according to any one of claims 1-5, characterized in that, The repair mechanism includes a welding device, which includes a welding head for welding tab repair material to the cracked portion of the tab.

10. The electrode repair device according to any one of claims 1-5, characterized in that, The repair mechanism includes an adhesive device, which includes an adsorption element for adsorbing tab repair material and adhering the tab repair material to the cracked portion of the tab.

11. A battery production line, characterized in that, Includes the electrode repair device according to any one of claims 1-10.

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