Electroplating clamp

Abstract

The electroplating clamp comprises a frame body, the frame body is provided with a containing groove used for containing a battery piece, the containing groove penetrates through the frame body, the groove wall of the containing groove is provided with a supporting boss in a protruding mode, the supporting boss is used for supporting the battery piece, and the two opposite sides of the containing groove are each provided with a conductive rotating shaft; the conductive rotating shaft is movably connected with the frame body, a clamping part extending outwards is arranged on the side wall of the conductive rotating shaft, the conductive rotating shaft has a clamping state and an avoiding state, in the clamping state, the end of the clamping part extends into the containing groove and is used for abutting against a pad point on the side, away from the supporting boss, of the battery piece, and in the avoiding state, the clamping part leaves the containing groove. The electroplating clamp can be matched with a pad point of the back contact battery, and the risk that the battery piece cracks or fragments can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic cell manufacturing, and in particular to an electroplating fixture. Background Art

[0002] With the development of the photovoltaic industry, battery grid copper interconnection technology has become a future development trend. Battery grid copper interconnection technology usually uses electroplating to form copper interconnection grid lines on the surface of the battery cell. During electroplating, the battery cell needs to be clamped by an electroplating fixture, and then the battery cell is placed in the electrolyte, and the electroplating fixture is used to energize the battery cell for electroplating.

[0003] Back-contact battery is a new type of battery technology. Its main feature is that the P-pole grid line and N-pole are evenly distributed on the back of the battery cell, and there is no grid line blocking the front of the battery cell, which can effectively improve the battery efficiency. The combination of back-contact battery and copper interconnect technology is bound to further improve battery efficiency. However, traditional electroplating fixtures are usually clamped on the front and back of the battery cell with two jaws respectively. In this way, not only can it not be accurately aligned with the pad point on the back of the back contact battery, but it is also easy to cause cracking or fragmentation of the battery cell. Utility Model Content

[0004] Based on this, it is necessary to provide an electroplating fixture that can be adapted to the pad points of the back contact battery and can reduce the risk of cracking or fragmentation of the battery cell.

[0005] The present application provides an electroplating fixture, including a frame body, the frame body is provided with a receiving groove for accommodating a battery cell, the receiving groove penetrates the frame body along the thickness direction of the frame body, the groove wall of the receiving groove is protrudingly provided with a supporting boss, the supporting boss is used to support the battery cell, the receiving groove is also provided with a conductive shaft on both sides in the width direction of the frame body, the conductive shaft is rotatably connected to the frame body, the side wall of the conductive shaft is provided with a clamping portion extending outward, the conductive shaft has a clamping state and an avoidance state, in the clamping state, the end of the clamping portion extends into the receiving groove and is used to abut against the pad point of the battery cell away from the support boss, in the avoidance state, the clamping portion leaves the receiving groove.

[0006] The technical solution is further described below:

[0007] In one embodiment, each of the conductive rotating shafts is provided with a plurality of clamping portions, the plurality of clamping portions are spaced apart along the axial direction of the conductive rotating shaft, and the plurality of clamping portions are located on the same side of the conductive rotating shaft and extend in the same direction.

[0008] In one of the embodiments, there are multiple supporting bosses, the multiple supporting bosses are arranged at intervals, and the positions of the supporting bosses are arranged one by one relative to the positions of the clamping portion in the clamping state.

[0009] In one embodiment, the clamping portion includes a connecting arm and a clamping claw, the two ends of the connecting arm are respectively connected to the conductive rotating shaft and the clamping claw, the clamping claw and the connecting arm are arranged at an angle, and in the clamping state, the clamping claw extends into the accommodating groove; the end of the clamping claw away from the connecting arm forms an arc surface for abutting against the battery cell; and / or the material of the frame body is an engineering plastic sheet.

[0010] In one embodiment, the conductive shaft is arranged on one side of the frame body, and the electroplating fixture is further provided with a support frame, which is arranged on the other side of the frame body and spans the receiving groove, and the support frame is provided with a support column extending toward the side where the conductive shaft is located, and the top of the support column is flush with the support boss for supporting the supporting surface of the battery cell; and / or, the receiving groove is a rectangular groove, and the support boss is arranged on two groove walls of the receiving groove in the width direction of the frame body, and the two groove walls of the receiving groove in the height direction of the frame body are also provided with positioning steps, and the positioning steps are used to abut against the wide side of the battery cell.

[0011] In one of the embodiments, the wall of the containing tank is further provided with a groove for allowing the electrolyte to flow.

[0012] In one embodiment, there are a plurality of the accommodating grooves, each of which is arranged at intervals, and a conductive rotating shaft is provided on two opposite sides of each of the accommodating grooves.

[0013] In one embodiment, a guide hole penetrating the frame body along the thickness direction of the frame body is provided between two adjacent receiving grooves; and / or, at least two of the receiving grooves are adjacent in the height direction of the frame body, and a guide groove is provided between two adjacent receiving grooves in the height direction of the frame body, and the height of the guide groove gradually decreases from the center line of the receiving groove toward both sides of the receiving groove.

[0014] In one embodiment, the conductive rotating shaft and the clamping portion both include a substrate layer, a conductive composite layer coated on the outside of the substrate layer, and an anti-corrosion layer coated on the outside of the conductive composite layer, wherein the conductive composite layer at the end of the clamping portion is exposed from the anti-corrosion layer and is covered with a wear-resistant metal layer.

[0015] In one embodiment, the conductive shaft is rotatably connected to the frame body via a bearing, a torsion spring is sleeved on the conductive shaft, and the torsion spring is used to maintain the conductive shaft in the clamping state; and / or, one end of the frame body is connected to an electrode hook for connecting a power source, the electrode hook is electrically connected to each of the conductive shafts, and the other end of the frame body is provided with a driving member, and the driving member is used to drive the conductive shaft to switch between the clamping state and the avoidance state.

[0016] The electroplating fixture is provided with a receiving groove on the frame body and a supporting boss on the groove wall of the receiving groove. The supporting boss can support the battery cell. At the same time, a conductive shaft is provided on each of the two opposite sides of the receiving groove. When the conductive shaft enters the clamping state, the end of the clamping part on the conductive shaft can extend into the receiving groove and abut against the pad point on the back of the battery cell, so that the supporting boss and the clamping part can stably fix the battery cell in the receiving groove from both sides of the battery cell, and at the same time, the clamping part can form an electrical contact with the pad point on the back of the battery cell, so that it is suitable for back contact batteries. In addition, the supporting boss can stably support the battery cell, so that the clamping part can stably fix the battery cell in the receiving groove without too much clamping force, reducing the risk of cracking or fragmentation of the battery cell due to excessive clamping force. In addition, before the clamping part clamps the battery cell, the supporting boss can also play a preliminary positioning role for the battery cell, ensuring that the clamping part and the pad point on the back of the battery cell are accurately aligned, thereby ensuring reliable electrical connection and thus ensuring a stable electroplating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0020] Figure 1 It is a schematic structural diagram of an electroplating fixture according to an embodiment when the conductive shaft is in a clamping state.

[0021] Figure 2 for Figure 1 A top view of the electroplating fixture shown in FIG.

[0022] Figure 3 The side view of the electroplating fixture shown in [reference] when the conductive rotating shaft is in the avoidance state.

[0023] Figure 4 is Figure 1 The partial enlarged view of the electroplating fixture shown in [reference] at part A.

[0024] Figure 5 is Figure 1 The partial enlarged view of the electroplating fixture shown in [reference] at part B.

[0025] Explanation of reference numerals:

[0026] 10. Frame body; 11. Accommodating groove; 111. Support boss; 12. Support frame; 121. Support column; 13. Groove; 14. Positioning step; 15. Flow guiding groove; 16. Flow guiding hole; 17. Electrode hook; 171. Wire groove; 18. Driving member; 191. Torsion spring; 192. Bearing; 20. Conductive rotating shaft; 21. Clamping portion; 211. Connecting arm; 212. Claw. Detailed implementation manners

[0027] To make the above objects, features and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0028] In the description of the present application, it should be understood that if there appear such terms as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0029] In addition, if the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In this application, unless otherwise clearly specified and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In this application, unless otherwise clearly specified and defined, if there is a description such as a first feature being "on" or "under" a second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.

[0033] An embodiment of this application provides an electroplating fixture for clamping a battery wafer so that the battery wafer can be electroplated. Specifically, refer to Figure 1 and Figure 2The electroplating fixture of one embodiment includes a frame body 10, and the frame body 10 is provided with a receiving groove 11 for receiving a battery cell. The receiving groove 11 penetrates the frame body 10 along the thickness direction of the frame body 10, and the groove wall of the receiving groove 11 is provided with a supporting boss 111, and the supporting boss 111 is used to support the battery cell. The receiving groove 11 is also provided with a conductive shaft 20 on both sides of the width direction of the frame body 10, and the conductive shaft 20 is movably connected to the frame body 10. The side wall of the conductive shaft 20 is provided with a clamping portion 21 extending outward, and the conductive shaft 20 has a clamping state and an avoidance state. In the clamping state, the end of the clamping portion 21 extends into the receiving groove 11 and is used to abut against the pad point on the side of the battery cell away from the supporting boss 111, so as to form an electrical connection between the conductive shaft 20 and the battery cell while clamping and fixing the battery cell, wherein the pad point refers to the silver paste point on the battery cell used for welding with the solder strip. Combined with Figure 3 In the avoidance state, the clamping portion 21 leaves the receiving groove 11 to allow the battery cell to enter and exit the receiving groove 11. For example, see Figure 2 as well as Figure 3 In the figure, the X direction is the width direction of the frame body 10, the Y direction is the thickness direction of the frame body 10, and the Z direction is the height direction of the frame body 10.

[0034] For example, taking the electroplating of the back contact battery using the above-mentioned electroplating fixture as an example, before clamping the battery cell. First, the conductive shafts 20 on both sides of the accommodating groove 11 are put into an avoidance state, so that the two clamping parts 21 located on the opposite sides of the accommodating groove 11 leave the accommodating groove 11 to avoid the battery cell, and then the battery cell is placed in the accommodating groove 11, and the front edge of the battery cell is overlapped on the supporting boss 111, and then the two conductive shafts 20 located on the opposite sides of the accommodating groove 11 are driven to enter the clamping state, so that the ends of the clamping parts 21 on the two conductive shafts 20 extend into the accommodating groove 11 and respectively abut against the pad points on the back edge of the battery cell, so that the supporting boss 111 and the clamping parts 21 clamp and fix the battery cell in the accommodating groove 11 from both sides of the battery cell, and at the same time realize the electrical connection between the conductive shaft 20 and the battery cell, and finally the electroplating fixture together with the battery cell is immersed in the electrolyte, and the positive and negative electrodes of the power supply are respectively connected through the conductive shafts 20 on both sides to energize the battery cell, and the battery cell can be electroplated.

[0035] The electroplating fixture is provided with a receiving groove 11 on the frame body 10, and a supporting boss 111 is provided on the groove wall of the receiving groove 11. The supporting boss 111 can support the battery cell. At the same time, a conductive shaft 20 is provided on each of the opposite sides of the receiving groove 11. When the conductive shaft 20 enters the clamping state, the end of the clamping part 21 on the conductive shaft 20 can extend into the receiving groove 11 and abut against the pad point on the back of the battery cell, so that the supporting boss 111 and the clamping part 21 can stably fix the battery cell in the receiving groove 11 from both sides of the battery cell, and at the same time, the clamping part 21 can form an electrical contact with the pad point on the back of the battery cell, so that it is suitable for back contact batteries. In addition, the supporting boss 111 can stably support the battery cell, so that the clamping part 21 can stably fix the battery cell in the receiving groove 11 without too much clamping force, thereby reducing the risk of cracking or fragmentation of the battery cell due to excessive clamping force. In addition, before the clamping portion 21 clamps the battery cell, the supporting boss 111 can also play a preliminary positioning role for the battery cell, ensuring that the clamping portion 21 and the pad point on the back of the battery cell are accurately aligned, thereby ensuring reliable electrical connection and further ensuring a stable electroplating process.

[0036] See also Figure 4 In one embodiment, the clamping portion 21 includes a connecting arm 211 and a clamping jaw 212, and the two ends of the connecting arm 211 are respectively connected to the conductive rotating shaft 20 and the clamping jaw 212, and the clamping jaw 212 and the connecting arm 211 are arranged at an angle. Exemplarily, the clamping portion 21 is an L-shaped structure. In the clamping state, the clamping jaw 212 extends into the accommodating groove 11, thereby ensuring that the clamping jaw 212 can stably abut against the pad point on the back edge of the battery cell. Further, the end of the clamping jaw 212 away from the connecting arm 211 forms an arc surface for abutting against the battery cell, so that the contact area between the clamping portion 21 and the battery cell can be reduced. On the one hand, it is ensured that the plating leakage area of ​​the contact position between the clamping portion 21 and the battery cell is smaller, and welding is not affected. On the other hand, the clamping portion 21 can avoid crushing the battery cell by abutting against the battery cell through the arc surface. Exemplarily, the radius of the arc surface is 0.1mm~0.5mm, and the contact area between the clamping portion 21 and the battery cell is ≤1.5mm*1.5mm.

[0037] Alternatively, see Figure 1, in one embodiment, each conductive rotating shaft 20 is provided with a plurality of clamping portions 21. The plurality of clamping portions 21 are arranged at intervals along the axial direction of the conductive rotating shaft 20. The plurality of clamping portions 21 are all located on the same side of the conductive rotating shaft 20 and all extend in the same direction. Exemplarily, there are 8 clamping portions 21 on the conductive rotating shaft 20, and the 8 clamping portions 21 are arranged at intervals along the axial direction of the conductive rotating shaft 20. In this way, the clamping force of the conductive rotating shaft 20 on the battery cell is more uniform, and the distribution of the power-on points between the conductive rotating shaft 20 and the battery cell is also more uniform. While ensuring the clamping stability and power-on uniformity of the battery cell, the risk of cracking or fragmentation caused by the concentrated force on the battery cell is avoided. It should be noted that in other embodiments, the number of clamping portions 21 on each conductive rotating shaft 20 can be more or less, such as 1, 2, 3... 7, 9, etc.

[0038] See Figure 1 , the number of the supporting bosses 111 is multiple, the multiple supporting bosses 111 are arranged at intervals, and the positions of the supporting bosses 111 are in one-to-one correspondence with the positions of the clamping portions 21 in the clamping state. By arranging a supporting boss 111 below each clamping portion 21, the stability of the battery cell can be improved, and at the same time, the accurate alignment of the clamping portion 21 with the pad point on the side of the battery cell can be ensured.

[0039] Optionally, in one embodiment, the conductive rotating shaft 20 is arranged on one side of the frame body 10. The electroplating fixture is further provided with a support frame 12. The support frame 12 is arranged on the other side of the frame body 10 and straddles the accommodating groove 11. The support frame 12 is provided with a support column 121 extending towards the side where the conductive rotating shaft 20 is located. The top of the support column 121 is flush with the supporting surface of the supporting boss 111 for supporting the battery cell. By jointly supporting the battery cell by the support column 121 and the supporting boss 111, the supported area of the battery cell is increased, and the clamping stability of the battery cell can be further improved. In order to reduce the risk of battery cell fragmentation, the electroplating effect is thus avoided from being affected. Exemplarily, the support frame 12 is of an H-shaped structure, and a plurality of support columns 121 are arranged on the support frame 12, so as to further improve the supporting effect. Exemplarily, the area of the supporting surface of the supporting boss 111 is 2mm * 10mm.

[0040] See Figure 1 , in one embodiment, the accommodating groove 11 is a rectangular groove. The supporting bosses 111 are arranged on two groove walls of the accommodating groove 11 in the width direction of the frame body 10. Positioning steps 14 are further arranged on two groove walls of the accommodating groove 11 in the height direction of the frame body 10. The positioning steps 14 are used for abutting against the wide sides of the battery cell. In this way, without affecting the electrical connection between the clamping portion 21 and the battery cell, the positioning accuracy of the battery cell is improved. Exemplarily, there are multiple positioning steps 14, and the multiple positioning steps 14 are arranged at intervals along the groove wall of the accommodating groove 11, so as to further improve the positioning effect.

[0041] Optionally, in one embodiment, the groove wall of the accommodating groove 11 is further provided with a groove 13 for the electrolyte to flow through. This is beneficial to the flow of the electrolyte on both sides of the battery cell through the groove 13, reducing the acting force of the electrolyte on the battery cell, and further reducing the risk of the battery cell cracking or fragmenting. Exemplarily, a plurality of grooves 13 are provided, and the plurality of grooves 13 are arranged at intervals along the groove wall of the accommodating groove 11.

[0042] See Figure 2 , in one embodiment, the number of the accommodating grooves 11 is multiple, and the accommodating grooves 11 are arranged at intervals. A conductive rotating shaft 20 is provided on each of the opposite sides of each accommodating groove 11. Exemplarily, in one implementation, the number of the accommodating grooves 11 can be 2, 3, 4, 5 or more, etc. All the accommodating grooves 11 are arranged in an array along the height direction and the width direction of the frame body. In this way, a plating fixture can clamp multiple battery cells at the same time, improving the plating efficiency.

[0043] Furthermore, at least two accommodating grooves 11 are adjacent in the height direction of the frame body 10, and a diversion groove 15 is provided between the two accommodating grooves 11 adjacent in the height direction of the frame body 10. The height of the diversion groove 15 gradually decreases from the center line of the accommodating groove 11 to both sides of the accommodating groove 11. In this way, after the plating fixture is lifted, the electrolyte or cleaning water flowing down from the battery cell at a higher position can flow along the diversion groove 15 to both sides of the battery cell below, avoiding the electrolyte or cleaning water on the battery cell at a higher position from directly flowing onto the battery cell below. This is beneficial to reducing defects such as dirty appearance of the battery cell below.

[0044] Furthermore, a diversion hole 16 penetrating the frame body 10 in the thickness direction of the frame body 10 is provided between two adjacent accommodating grooves 11. This is beneficial to the flow of the electrolyte on both sides of the frame body 10 through the diversion hole 16, reducing the acting force of the electrolyte on the battery cell, and further reducing the risk of the battery cell cracking or fragmenting. Exemplarily, a plurality of diversion holes 16 are provided, and the plurality of diversion holes 16 are arranged at intervals along the diversion groove 15.

[0045] Optionally, in one embodiment, both the conductive rotating shaft 20 and the clamping portion 21 include a base material layer, a conductive composite layer coated outside the base material layer, and an anti-corrosion layer coated outside the conductive composite layer. Among them, the conductive composite layer can be a metal conductive coating such as iridium tantalum alloy, rhodium ruthenium alloy, or platinum iridium alloy. This can not only improve the conductivity of the conductive rotating shaft 20 and the support portion but also endow the conductive rotating shaft 20 and the support portion with certain anti-corrosion properties. The thickness of the conductive composite layer is 100um - 500um. The conductive composite layer can be an epoxy resin-based polymer material, which can greatly improve the anti-corrosion performance of the conductive rotating shaft 20 and the support portion, thereby increasing the service life of the plating fixture and further reducing the maintenance cost during the production process of the battery cell.

[0046] Further, the conductive composite layer located at the end of the clamping portion 21 is exposed from the anti-corrosion layer and covered with a wear-resistant metal layer. Exemplarily, the wear-resistant metal layer can be a hard conductive alloy such as gold-cobalt alloy or silver-antimony, so as to improve the wear resistance of the end of the clamping portion 21 and ensure that the end of the clamping portion 21 can still be in stable electrical contact with the pad point of the battery cell after long-term use.

[0047] See Figure 5 , in an embodiment, the conductive rotating shaft 20 is rotatably connected to the frame body 10 through a bearing 192. A torsion spring 191 is sleeved on the conductive rotating shaft 20, and the torsion spring 191 is used to position the conductive rotating shaft 20 in the clamping state; and / or, one end of the frame body 10 is connected with an electrode hook 17 for connecting a power supply. The electrode hook 17 is electrically connected to each conductive rotating shaft 20. An avoidance groove for connecting the driving member 18 to the conductive rotating shaft 20 is provided at the other end of the frame body 10, and the driving member 18 is used to drive the conductive rotating shaft 20 to switch between the clamping state and the avoidance state.

[0048] Optionally, in an embodiment, the conductive rotating shaft 20 is rotatably connected to the frame body 10 through a bearing 192. A torsion spring 191 is sleeved on the conductive rotating shaft 20, and the torsion spring 191 is used to maintain the conductive rotating shaft 20 in the clamping state. Specifically, the torsion spring 191 can also provide a certain elastic force to the conductive rotating shaft 20 to ensure that the clamping portion on the conductive rotating shaft 20 can firmly abut against the pad point on the back of the battery cell in the clamping state.

[0049] See Figure 1 , in an embodiment, one end of the frame body 10 is connected with an electrode hook 17 for connecting a power supply. The electrode hook 17 is electrically connected to each conductive rotating shaft 20. A driving member 18 is connected to the other end of the frame body 10, and the driving member 18 is used to drive the conductive rotating shaft 20 to switch between the clamping state and the avoidance state. Specifically, there are two electrode hooks 17, and the two motor hooks are respectively used to connect the positive and negative poles of the power supply. Further, the electrode hook 17 is electrically connected to the conductive rotating shaft 20 through a wire. A wire groove 171 for threading the wire is also provided on the frame body 10, and the wire groove 171 is filled with insulating glue to seal the wire and prevent the electrolyte from eroding the wire.

[0050] Further, a driving member 18 is provided at one end of the frame body 10 away from the electrode hook 17, and the driving member 18 is used to drive the conductive rotating shaft 20 to switch between the clamping state and the avoidance state. Exemplarily, in an embodiment, the driving member 18 includes a spring wrench, and the spring wrench is connected to the conductive rotating shaft 20, so that the conductive rotating shaft 20 can be driven to rotate by rotating the spring wrench, and further the conductive rotating shaft 20 can be switched between the clamping state and the avoidance state. It can be understood that in other embodiments, the driving member 18 can also be a motor or the like, and in this way, the conductive rotating shaft 20 can also be driven to rotate between the clamping state and the avoidance state.

[0051] Optionally, in one embodiment, the frame body 10 is made of an engineering plastic plate such as PVC or PVDF, and the thickness of the frame body 10 is 15 mm - 20 mm. The engineering plastic plate has good corrosion resistance, high stiffness and is lighter in weight than the metal material under the same volume, which is convenient for handling.

[0052] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0053] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. An electroplating fixture, characterized in that: The invention comprises a frame body (10), wherein the frame body (10) is provided with a receiving groove (11) for receiving a battery cell, wherein the receiving groove (11) penetrates the frame body (10) along the thickness direction of the frame body (10), and a supporting boss (111) is provided on the groove wall of the receiving groove (11), wherein the supporting boss (111) is used to support the battery cell, and a conductive rotating shaft (20) is provided on each of the two sides of the receiving groove (11) in the width direction of the frame body (10). The conductive rotating shaft (20) is rotatably connected to the frame body (10); a clamping portion (21) extending outward is provided on a side wall of the conductive rotating shaft (20); the conductive rotating shaft (20) has a clamping state and an avoidance state; in the clamping state, an end of the clamping portion (21) extends into the accommodating groove (11) and is used to abut against a pad point on a side of the battery cell away from the supporting boss (111); in the avoidance state, the clamping portion (21) leaves the accommodating groove (11).

2. The electroplating fixture according to claim 1, characterized in that: Each of the conductive rotating shafts (20) is provided with a plurality of the clamping portions (21), the plurality of the clamping portions (21) being arranged at intervals along the axial direction of the conductive rotating shaft (20), and the plurality of the clamping portions (21) being located on the same side of the conductive rotating shaft (20) and extending in the same direction.

3. The electroplating fixture according to claim 2, characterized in that: The number of the supporting bosses (111) is plural, the multiple supporting bosses (111) are arranged at intervals, and the positions of the supporting bosses (111) are arranged one by one relative to the positions of the clamping portions (21) in the clamping state.

4. The electroplating fixture according to claim 1, characterized in that: The clamping portion (21) comprises a connecting arm (211) and a clamping claw (212); two ends of the connecting arm (211) are respectively connected to the conductive rotating shaft (20) and the clamping claw (212); the clamping claw (212) and the connecting arm (211) are arranged at an angle, and in the clamping state, the clamping claw (212) extends into the accommodating groove (11); an end of the clamping claw (212) facing away from the connecting arm (211) forms an arc surface for abutting against the battery cell; and / or the frame body (10) is made of an engineering plastic plate.

5. The electroplating fixture according to claim 1, characterized in that: The conductive shaft (20) is arranged on one side of the frame body (10), and the electroplating fixture is also provided with a support frame (12), and the support frame (12) is arranged on the other side of the frame body (10) and spans the accommodating groove (11), and the support frame (12) is provided with a support column (121) extending toward the side where the conductive shaft (20) is located, and the top of the support column (121) is flush with the support surface of the support boss (111) for supporting the battery cell; and / or, the accommodating groove (11) is a rectangular groove, and the support boss (111) is arranged on two groove walls of the accommodating groove (11) in the width direction of the frame body (10), and the two groove walls of the accommodating groove (11) in the height direction of the frame body (10) are also provided with positioning steps (14), and the positioning steps (14) are used to abut against the side of the battery cell.

6. The electroplating fixture according to claim 1, characterized in that: The wall of the containing tank (11) is also provided with a groove (13) for allowing electrolyte to flow.

7. The electroplating fixture according to claim 1, characterized in that: There are a plurality of the accommodating grooves (11), each of which is arranged at intervals, and a conductive rotating shaft (20) is provided on two opposite sides of each of the accommodating grooves (11).

8. The electroplating fixture according to claim 7, characterized in that: A guide hole (16) penetrating the frame body (10) along the thickness direction of the frame body (10) is provided between two adjacent accommodating grooves (11); and / or at least two of the accommodating grooves (11) are adjacent in the height direction of the frame body (10), and a guide groove (15) is provided between two adjacent accommodating grooves (11) in the height direction of the frame body (10), and the height of the guide groove (15) gradually decreases from the center line of the accommodating groove (11) toward both sides of the accommodating groove (11).

9. The electroplating fixture according to claim 1, characterized in that: The conductive rotating shaft (20) and the clamping portion (21) both comprise a base material layer, a conductive composite layer coated outside the base material layer, and an anti-corrosion layer coated outside the conductive composite layer, wherein the conductive composite layer at the end of the clamping portion (21) is exposed from the anti-corrosion layer and is covered with a wear-resistant metal layer.

10. The electroplating fixture according to claim 1, characterized in that: The conductive rotating shaft (20) is rotatably connected to the frame body (10) via a bearing (192); a torsion spring (191) is sleeved on the conductive rotating shaft (20); the torsion spring (191) is used to maintain the conductive rotating shaft (20) in the clamping state; and / or, one end of the frame body (10) is connected to an electrode hook (17) for connecting to a power source; the electrode hook (17) is electrically connected to each of the conductive rotating shafts (20); the other end of the frame body (10) is provided with a driving member (18); the driving member (18) is used to drive the conductive rotating shaft (20) to switch between the clamping state and the avoidance state.

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