A battery piece reciprocating electroplating device and a battery piece electroplating method

Abstract

The embodiment of the present application provides a battery piece reciprocating electroplating device and a battery piece electroplating method, the battery piece reciprocating electroplating device is provided with an electroplating cavity for containing an electroplating solution, and the battery piece reciprocating electroplating device comprises a reciprocating driving assembly; the reciprocating driving assembly is used for driving the battery piece to reciprocate relative to the electroplating cavity to enter and exit the electroplating cavity, so that the battery piece reciprocates at least on a single side of the electroplating cavity; when the battery piece enters and exits the electroplating cavity, at least two electrode plating layers are formed on the surface of the battery piece. The battery piece reciprocating electroplating device can shorten the transmission path of battery piece electroplating, is favorable for reducing the size and volume of the electroplating device, is favorable for the installation layout of the electroplating device, and is favorable for reducing the electroplating cost.

Description

[0001] This application claims priority to Chinese Patent Application No. 202123238643.4, filed on December 21, 2021, entitled “An Electroplating Apparatus for Battery Cells”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of solar cell electroplating, and more particularly to a reciprocating electroplating apparatus and method for solar cells. Background Technology

[0003] In the fabrication of electrodes for solar cells, traditional processes typically employ screen printing, while electroplating technology, as a novel electrode preparation method, is increasingly being researched. Electroplated electrodes, compared to screen-printed electrodes, offer a higher aspect ratio and better conductivity, resulting in lower internal resistance and reduced losses due to shading, thereby further improving the photoelectric conversion efficiency of solar cells. Electroplating, as a promising electrode preparation method, can significantly reduce the cost of solar cell manufacturing processes. Currently, when electroplating electrodes onto the surface of solar cells, racks and carriers are typically used to suspend the cells in the electroplating solution for electroplating.

[0004] In this plating method, multiple battery cells are typically held and fixed in an electroplating carrier and immersed in an electroplating tank for electroplating. Once the electrode electroplating is complete, the electroplating carrier is removed from the electroplating tank and the battery cells are removed.

[0005] However, the electroplating equipment used in this process is bulky and inconvenient to install and arrange, which increases the electroplating cost of the battery cells. Summary of the Invention

[0006] This invention provides a reciprocating electroplating apparatus for battery cells to solve the problem that existing battery cell electroplating apparatuses have a large structural volume, are inconvenient to install and arrange, and thus increase the electroplating cost of battery cells.

[0007] To solve the above problems, the present invention is implemented as follows:

[0008] This invention provides a reciprocating electroplating apparatus for battery cells, the reciprocating electroplating apparatus for battery cells being provided with an electroplating chamber for containing electroplating solution, and the reciprocating electroplating apparatus for battery cells including a reciprocating drive assembly;

[0009] The reciprocating drive assembly is used to drive the battery cell to move back and forth relative to the electroplating cavity, so as to enter and exit the electroplating cavity, and to make the battery cell reciprocate at least on one side of the electroplating cavity.

[0010] When the battery cell enters or exits the electroplating chamber, at least two electrode plating layers are formed on the surface of the battery cell.

[0011] Optionally, the reciprocating drive assembly drives the battery cell in a horizontal direction, and the battery cell is located in a horizontal plane or a vertical plane; or, the reciprocating drive assembly drives the battery cell in a vertical direction, and the battery cell is located in a vertical plane.

[0012] Optionally, the reciprocating drive assembly includes a first clamp and a second clamp;

[0013] The first clamp is disposed on a first side outside the electroplating chamber, and the second clamp is disposed on a second side outside the electroplating chamber. Both the first clamp and the second clamp are used to clamp the battery cell; wherein, the first side and the second side are the front and rear sides of the battery cell in the direction of travel within the electroplating chamber.

[0014] Optionally, the reciprocating drive assembly further includes a clamp transmission mechanism;

[0015] Both the first clamp and the second clamp are fixedly connected to the clamp transmission mechanism, and the clamp transmission mechanism drives the first clamp and the second clamp to move while holding the battery cell.

[0016] Optionally, the reciprocating electroplating apparatus for battery cells further includes an electroplating power supply and anode consumables;

[0017] The anode consumable is disposed inside the electroplating chamber and electrically connected to the anode of the electroplating power source; the first clamp and the second clamp are both electrically connected to the cathode of the electroplating power source.

[0018] When the battery cell is in the electroplating chamber, either the first clamp or the second clamp forms an electroplating circuit with the anode consumable and the battery cell for plating on the battery cell.

[0019] Optionally, the reciprocating electroplating apparatus for battery cells further includes an electroplating power supply, an anode consumable, and a conductive cathode;

[0020] The anode consumable is disposed inside the electroplating chamber and electrically connected to the anode of the electroplating power supply, and the conductive cathode is electrically connected to the cathode of the electroplating power supply.

[0021] When the battery cell is in the electroplating chamber, the anode consumable, the battery cell, and the conductive cathode form an electroplating circuit for plating on the battery cell.

[0022] Optionally, the clamp transmission mechanism includes a transmission component, a translation component, a first reset component, and a second reset component;

[0023] The translation component is connected to the transmission component, and the transmission component drives the translation component to translate along the transmission direction of the battery cell;

[0024] Along the direction from the first side to the second side of the electroplating cavity, the translation member is used to drive the second clamp to translate gradually away from the electroplating cavity, and the first reset component is used to drive the first clamp to translate back to a position close to the electroplating cavity, wherein the second clamp is in a closed clamping state for holding the battery cell, and the first clamp is in an open releasing state for the battery cell;

[0025] Along the direction from the second side to the first side of the electroplating cavity, the translation member is used to drive the first clamp to gradually move away from the electroplating cavity, and the second reset assembly is used to drive the second clamp to move back to a position close to the electroplating cavity, wherein the first clamp is in a closed clamping state for holding the battery cell, and the second clamp is in an open releasing state for releasing the battery cell.

[0026] Optionally, at least one of the first reset assembly and the second reset assembly is selected from any one of the reset traction hammer, the reset spring, and the magnetic reset assembly.

[0027] Optionally, the clamp transmission mechanism further includes an adjustment component for adjusting the horizontal distance between the translation member and the first clamp or the second clamp;

[0028] The adjustment component is connected to the translation component.

[0029] Optionally, the adjusting assembly includes a fixing nut and an adjusting rod;

[0030] The translating member has the fixing nut fixed to its surface facing the first clamp and / or the second clamp. The adjusting rod has an external thread and is threadedly connected to the fixing nut. One end of the adjusting rod is used to contact the first clamp or the second clamp to drive the corresponding clamp to move.

[0031] Optionally, at least one of the first clamp and the second clamp is provided with a buffer pad between itself and the translation member.

[0032] Optionally, the transmission component includes a synchronous pulley connected to a drive motor, and a synchronous belt wound around the synchronous pulley;

[0033] The translation component is fixedly connected to the timing belt.

[0034] Optionally, the first clamp or the second clamp is clamped at at least one end of the battery cell in a first direction, where the first direction is the direction of the line connecting the two opposite feed points on the battery cell, and the direction of movement of the battery cell is parallel or perpendicular to the first direction.

[0035] Optionally, at least one of the first clamp and the second clamp includes a mounting base, a first clamping member, a second clamping member, and a clamping member driving mechanism;

[0036] Both the first clamping member and the second clamping member are slidably connected to the mounting base, and the first clamping member and the second clamping member are arranged opposite to each other;

[0037] The clamping member driving mechanism is disposed on the mounting base and is used to drive the first clamping member and the second clamping member to move relative to each other to clamp the battery cell.

[0038] Optionally, the clamping member driving mechanism includes a first clamping member driving mechanism, the first clamping member is connected to the first clamping member driving mechanism, and the first clamping member driving mechanism drives the first clamping member to move;

[0039] And / or,

[0040] The clamping member driving mechanism includes a second clamping member driving mechanism, the second clamping member is connected to the second clamping member driving mechanism, and the second clamping member driving mechanism drives the second clamping member to move.

[0041] Optionally, either the first clamping member or the second clamping member includes a strip-shaped connecting base and a clamping portion, wherein the clamping portion is connected to the connecting base and arranged along the length direction of the connecting base;

[0042] During the electroplating process, the clamping part is electrically connected to the electrode feed point on the surface of the battery cell.

[0043] Optionally, the clamping part includes a large diameter part and a small diameter part, and the large diameter part and the small diameter part are connected to form a stepped shaft structure;

[0044] The coarse diameter portion is connected to the connecting substrate, and the fine diameter portion is used to electrically connect to the electrode feed point.

[0045] Optionally, the coarse-diameter portion and the fine-diameter portion are elastically connected.

[0046] Optionally, the connecting base is provided with a plurality of pre-embedded holes at intervals along its length, and each pre-embedded hole is embedded with a plurality of fine filaments to form a bundle of clamping parts.

[0047] Optionally, the clamping portion includes a dense, flexible conductive medium arranged along the length of the connecting substrate.

[0048] Optionally, the reciprocating electroplating apparatus for battery cells further includes a first liquid-blocking roller assembly and a second liquid-blocking roller assembly;

[0049] The first liquid blocking roller assembly and the second liquid blocking roller assembly are spaced apart to form the electroplating chamber. The first liquid blocking roller assembly has a first slit for the battery cell to pass through, and the second liquid blocking roller assembly has a second slit for the battery cell to pass through. The first slit and the second slit are in the same horizontal plane.

[0050] Optionally, the reciprocating drive assembly is connected to the outer wall of the electroplating chamber, and the reciprocating drive assembly is used to drive the electroplating chamber to reciprocate and translate relative to the battery cell.

[0051] This invention also provides a reciprocating electroplating apparatus for battery cells, wherein the reciprocating electroplating apparatus for battery cells is provided with an electroplating chamber for containing electroplating solution;

[0052] The electroplating apparatus includes an anode consumable, a clamp transmission mechanism, and a conductive clamp. The anode consumable is disposed in the electroplating chamber and electrically connected to the anode of the power supply, and the conductive clamp is electrically connected to the cathode of the power supply.

[0053] The conductive clamp is fixedly connected to the clamp transmission mechanism. The conductive clamp is used to clamp the battery cell. The clamp transmission mechanism drives the conductive clamp to reciprocate synchronously with the battery cell on at least one side of the electroplating chamber.

[0054] When the battery cell is in the electroplating chamber, the anode consumable, the battery cell, and the conductive clamp form an electroplating circuit for plating on the battery cell.

[0055] This invention also provides a method for reciprocating electroplating of battery cells, the method being used in the aforementioned reciprocating electroplating apparatus for battery cells, the method comprising:

[0056] The reciprocating drive assembly is controlled to drive the battery cell to reciprocate relative to the electroplating chamber; wherein the area of ​​the reciprocating motion of the battery cell is located at least on one side of the electroplating chamber.

[0057] In this embodiment of the invention, a reciprocating electroplating apparatus for solar cells is provided. This apparatus includes an electroplating chamber for containing electroplating solution and a reciprocating drive assembly. When the reciprocating drive assembly is driven, it can drive the solar cells to move back and forth. The solar cells can reciprocate simultaneously from either side or both sides of the electroplating chamber. During this reciprocating motion, the solar cells continuously enter and exit the electroplating chamber from one or both sides, thereby completing the electrode electroplating process. Therefore, this reciprocating electroplating apparatus for solar cells can reduce the transport path for electroplating, which is beneficial for reducing the size and volume of the electroplating apparatus, facilitating its installation layout, and reducing electroplating costs. Attached Figure Description

[0058] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0059] Figure 1 A simplified schematic diagram illustrating a first type of reciprocating electroplating apparatus for battery cells according to an embodiment of the present invention;

[0060] Figure 2 This describes an embodiment of the present invention. Figure 1 A schematic diagram illustrating the principle of reciprocating electroplating of battery cells in the device shown.

[0061] Figure 3 A simplified schematic diagram illustrating a second type of reciprocating electroplating apparatus for battery cells according to an embodiment of the present invention;

[0062] Figure 4 This describes an embodiment of the present invention. Figure 3 A schematic diagram illustrating the principle of reciprocating electroplating of battery cells in the device shown.

[0063] Figure 5 A simplified schematic diagram illustrating a third type of reciprocating electroplating apparatus for battery cells according to an embodiment of the present invention;

[0064] Figure 6 This describes an embodiment of the present invention. Figure 5 A schematic diagram illustrating the principle of reciprocating electroplating of battery cells in the device shown.

[0065] Figure 7 A schematic diagram illustrating the horizontal movement of the battery cell in an embodiment of the present invention during electroplating.

[0066] Figure 8 A schematic diagram illustrating the horizontal electroplating of a battery cell in a vertical orientation according to an embodiment of the present invention;

[0067] Figure 9 A schematic diagram illustrating the vertical electroplating of a battery cell in a vertical posture according to an embodiment of the present invention;

[0068] Figure 10 This is a schematic diagram illustrating the structure of a fourth type of reciprocating electroplating apparatus for battery cells according to an embodiment of the present invention;

[0069] Figure 11 This is a schematic diagram illustrating the structure of the fifth type of reciprocating electroplating apparatus for battery cells according to an embodiment of the present invention;

[0070] Figure 12 This describes an embodiment of the present invention. Figure 11 A simplified side view of a reciprocating electroplating device for battery cells;

[0071] Figure 13 This describes an embodiment of the present invention. Figure 11 A schematic diagram in the XOZ plane;

[0072] Figure 14 This describes an embodiment of the present invention. Figure 11 A schematic diagram in the XOY plane;

[0073] Figure 15 This describes an embodiment of the present invention. Figure 11 A schematic diagram of a reciprocating electroplating device for battery cells in one working position;

[0074] Figure 16 This describes an embodiment of the present invention. Figure 11 A schematic diagram of the reciprocating electroplating device for battery cells in another working position;

[0075] Figure 17 This describes an embodiment of the present invention. Figure 11 A schematic diagram of the reciprocating electroplating device for battery cells in another working position;

[0076] Figure 18 A schematic diagram showing another clamping orientation of the battery cell according to an embodiment of the present invention;

[0077] Figure 19 This diagram illustrates the structure of any clamp according to an embodiment of the present invention.

[0078] Figure 20 This describes an embodiment of the present invention. Figure 19 A schematic diagram in the YOZ plane;

[0079] Figure 21 This describes an embodiment of the present invention. Figure 19 A schematic diagram in the XOZ plane;

[0080] Figure 22 This is a schematic diagram showing the structure of a first type of clamping member according to an embodiment of the present invention;

[0081] Figure 23 This is a schematic diagram showing the structure of the second type of clamping member according to an embodiment of the present invention;

[0082] Figure 24 This is a schematic diagram showing the structure of the third type of clamping member according to an embodiment of the present invention;

[0083] Figure 25 This describes an embodiment of the present invention. Figure 22 A front view perpendicular to the length direction of the connecting base;

[0084] Figure 26 This describes an embodiment of the present invention. Figure 25 A cross-sectional view along the AA direction;

[0085] Figure 27This describes an embodiment of the present invention. Figure 23 A front view perpendicular to the length direction of the connecting base;

[0086] Figure 28 This describes an embodiment of the present invention. Figure 27 A cross-sectional view along the AA direction;

[0087] Figure 29 This is a schematic diagram showing the structure of the electroplating cavity in an embodiment of the present invention.

[0088] Explanation of reference numerals in the attached figures:

[0089] Battery cell-10, electroplating chamber-20, reciprocating drive assembly-21, first liquid blocking roller assembly-22, second liquid blocking roller assembly-23, mounting base-221, first clamping member-222, second clamping member-223, clamping member drive mechanism-224, connecting base-225, clamping part-226, first clamp-211, second clamp-212, clamp transmission mechanism-213, transmission member-2131, translation member-2132, first reset assembly-2133, second reset assembly-2134, adjustment assembly-2135, coarse diameter part-2261, fine diameter part-2262. Detailed Implementation

[0090] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0091] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0092] To address the problem of large size and difficult layout of electroplating equipment in solar cell electroplating processes, this invention discloses a reciprocating electroplating apparatus for solar cells. In this apparatus, a reciprocating drive component can be used to drive either the solar cell or the electroplating chamber, causing them to move relative to each other. During this relative movement, the solar cell reciprocates at least on one side of the electroplating chamber, allowing it to move back and forth between either side of the chamber to complete the electrode electroplating process. The solar cell electroplating apparatus of this invention will be described in detail below with reference to various embodiments.

[0093] Reference Figures 1 to 6 This invention discloses a reciprocating electroplating device for battery cells, wherein the reciprocating electroplating device for battery cells is provided with an electroplating chamber 20 for containing electroplating liquid, and the reciprocating electroplating device for battery cells includes a reciprocating drive assembly 21.

[0094] The reciprocating drive assembly 21 is used to drive the battery cell 10 to move back and forth relative to the electroplating chamber 20, so as to enter and exit the electroplating chamber 20, and make the battery cell 10 reciprocate at least on one side of the electroplating chamber 20.

[0095] When the battery cell 10 enters or exits the electroplating chamber 20, at least two electrode plating layers are formed on the surface of the battery cell 10.

[0096] Specifically, such as Figures 1 to 6 As shown, the reciprocating electroplating apparatus for battery cells in this embodiment of the invention is provided with an electroplating chamber 20 for containing electrolyte. It can be understood that the electroplating chamber 20 is different from the electroplating tank of the traditional rack plating scheme. During the process of electroplating to form an electrode, the battery cell 10 and the electroplating chamber 20 can move relative to each other. The battery cell 10 can at least partially enter and exit the electroplating chamber 20, instead of suspending the battery cell 10 in the electroplating tank and immersing it in electrolyte as in the traditional rack plating scheme.

[0097] When the battery cell 10 is not inside the electroplating chamber 20, the electroplating chamber 20 can be considered an almost enclosed space, preventing electrolyte leakage. When the battery cell 10 needs to enter or exit the electroplating chamber, a slit can be formed on the side wall of the electroplating chamber 20 to allow the battery cell 10 to enter or exit. The cross-sectional dimensions of this slit are designed to be basically consistent with the thickness and side length of the battery cell 10, allowing the battery cell 10 to enter or exit while preventing large-scale electrolyte leakage. Thus, during electroplating, different areas of the surface of the battery cell 10 sequentially contact the electrolyte to form an electroplating circuit. In other words, at any given moment during the electroplating process, a local area of ​​the battery cell 10 is always in contact with the electrolyte, without needing to be completely submerged, thus saving electrolyte consumption. Simultaneously, the relative movement between the battery cell 10 and the electroplating chamber 20 achieves complete electroplating of the electrodes on the surface of the battery cell 10.

[0098] In the reciprocating electroplating apparatus for battery cells in this embodiment of the invention, the electroplating chamber 20 is provided with an electroplating anode (not shown in the figure) required for the electroplating process of the battery cell 10. The electroplating anode can be an anode metal plate with mesh, anode metal particles placed in a titanium basket, etc., and the electroplating anode is electrically connected to the power supply (not shown in the figure).

[0099] In order to achieve relative movement between the battery cell 10 and the electroplating chamber 20, the device also includes a reciprocating drive assembly 21. The reciprocating drive assembly 21 can be connected to the battery cell 10 to drive the battery cell 10 to move, or it can be connected to the electroplating chamber 20 to drive the electroplating chamber 20 to move.

[0100] When the reciprocating drive assembly 21 operates, the relative reciprocating motion between the battery cell 10 and the electroplating chamber 20 can be a single-sided reciprocating motion of the battery cell 10 within the electroplating chamber 20. As the battery cell 10 travels within the electroplating chamber 20, one side along the forward-backward direction is designated as the first side I of the electroplating chamber 20, and the other side is designated as the second side II of the electroplating chamber 20.

[0101] For example, when there is only one reciprocating drive component 21, such as Figure 1 and Figure 2 As illustrated, the A1 end of the battery cell 10 can be driven to reciprocate along the first side I of the electroplating chamber 20. In this reciprocating electroplating method, the battery cell 10 can only move along the first side I of the electroplating chamber 20. Figure 1 and Figure 2 The schematic diagram shows the reciprocating motion in directions A and A', and the battery cell 10 does not need to pass through the electroplating cavity 20 to exit from the second side II.

[0102] Similarly, when there is only one reciprocating drive component 21, such as Figure 2 and Figure 3 As illustrated, the reciprocating drive assembly 21 can also drive the A2 end of the battery cell 10 to reciprocate along the second side II of the electroplating chamber 20. In this reciprocating electroplating method, the battery cell 10 can only move along the second side II of the electroplating chamber 20. Figure 3 and Figure 4 The schematic diagram shows the reciprocating motion in directions A and A', allowing the battery cell 10 to exit from the first side I without passing through the electroplating cavity 20.

[0103] When there are two reciprocating drive components 21, such as Figure 5 and Figure 6As illustrated, a reciprocating drive assembly 21 can drive the A1 end of the battery cell 10 to move along the A direction, feeding the battery cell 10 from the first side I of the electroplating chamber 20 into the electroplating chamber 20. When the battery cell 10 extends out of the electroplating chamber 20, another reciprocating drive assembly 21 can drive the A2 end of the battery cell 10 to continue moving along the A direction, completely pulling the battery cell 10 out of the electroplating chamber 20. Subsequently, the reciprocating drive assembly 21 continues to hold the A2 end of the battery cell 10 and move it along the A' direction, feeding the battery cell 10 from the second side II of the electroplating chamber 20 into the electroplating chamber 20. When the battery cell 10 extends out of the electroplating chamber 20, the reciprocating drive assembly 21 on the other side can hold the A1 end of the battery cell 10 and move it along the A' direction, completely pulling the battery cell 10 out of the electroplating chamber 20. This process can be repeated multiple times to achieve the reciprocating movement of the battery cell 10 on both sides of the electroplating chamber 20. It should be noted that, regardless of whether the battery cell 10 reciprocates on one or both sides of the electroplating chamber 20, at least a portion of the battery cell 10 will enter the electroplating chamber 20 and come into contact with the electroplating solution, thereby achieving effective electroplating. During the reciprocating motion, when the battery cell enters and exits the electroplating chamber, at least two electrode coatings are formed on the surface of the battery cell.

[0104] Therefore, the reciprocating electroplating apparatus for battery cells of the present invention can reduce the transport path of the battery cell electroplating, which is beneficial to reducing the size and volume of the electroplating apparatus, improving the installation layout of the electroplating apparatus, and reducing the electroplating cost.

[0105] This article will describe the situation with the electroplating chamber 20 in a static state and the battery cell 10 being driven to move as an example.

[0106] Optionally, refer to Figures 7 to 9 The reciprocating drive assembly 21 drives the battery cell 10 in a horizontal direction, and the battery cell 10 is located in a horizontal plane or a vertical plane; or, the reciprocating drive assembly 21 drives the battery cell 10 in a vertical direction, and the battery cell 10 is located in a vertical plane or a horizontal plane.

[0107] Specifically, in one embodiment of the reciprocating electroplating apparatus for battery cells according to this invention, the reciprocating drive assembly 21 can be configured to hold the battery cell 10 in a horizontal plane, and the reciprocating drive assembly 21 moves synchronously with the battery cell 10 in the horizontal direction. See also Figure 7 The diagram illustrates that the battery cell 10 moves horizontally in and out of the electroplating chamber 20 within a horizontal plane. This reciprocating electroplating device enables horizontal electroplating of the battery cell. During horizontal electroplating, the battery cell 10 can temporarily store the electrolyte, which helps improve the integrity of the electrode plating. Alternatively, the battery cell 10 can also move vertically in and out of the electroplating chamber 20 within a horizontal plane, as shown in the diagram. Figure 8The illustration shows that the battery cell 10 moves vertically along the horizontal plane within the electroplating chamber 20. This type of battery cell electroplating device can achieve horizontal movement of the battery cell in a suspended posture, which helps to save on the size of the device.

[0108] In another embodiment, the reciprocating drive assembly 21 can be configured to hold the battery cell 10 in a vertical plane, and the reciprocating drive assembly 21 drives the battery cell 10 to move in the vertical direction. See also Figure 9 The illustration shows the solar cell 10 moving vertically along a vertical plane within the electroplating chamber 20. This solar cell electroplating device enables the vertical movement of the solar cell in a suspended position, which also helps to save on the size of the device.

[0109] Therefore, in practical applications, technicians can set the installation position of the reciprocating drive component 21 according to production needs, so as to drive the battery cell 10 to be in a suitable direction and move in a suitable direction.

[0110] Optionally, refer to Figure 10 The reciprocating drive assembly 21 includes a first clamp 211 and a second clamp 212;

[0111] The first clamp 211 is disposed on the first side outside the electroplating cavity 20, and the second clamp 212 is disposed on the second side outside the electroplating cavity 20. Both the first clamp 211 and the second clamp 212 are used to clamp the battery cell 10. The first side and the second side are the front and rear sides of the battery cell 10 in the direction of travel within the electroplating cavity 20.

[0112] Specifically, such as Figure 10 As shown, when the battery cell 10 travels within the electroplating chamber 20, one side along the forward-backward direction is designated as the first side I of the electroplating chamber 20, and the other side as the second side II. The aforementioned reciprocating drive assembly 21 may include two clamps: a first clamp 211 and a second clamp 212. The first clamp 211 is located on the first side I of the electroplating chamber 20, and the second clamp 212 is located on the second side II of the electroplating chamber 20. During electroplating of the battery cell 10, the first clamp 211 is in an open state. When the battery cell 10 is conveyed to the position of the first clamp 211 within the battery cell electroplating device, the first clamp 211 closes, clamping one edge of the battery cell 10. The first clamp 211, holding the battery cell 10, feeds the battery cell into the electroplating chamber 20 for electrode electroplating. Meanwhile, the second clamp 212 is in an open state on the second side II of the electroplating chamber 20. When the battery cell 10 extends from the second side II of the electroplating chamber 20, the second clamp 212 clamps the other edge of the battery cell 10 and pulls the battery cell 10 out of the electroplating chamber 20. When the above process is reversed, one reciprocating motion of the battery cell 10 is achieved.

[0113] Optionally, refer to Figure 10 The reciprocating drive assembly 21 further includes a clamp transmission mechanism 213;

[0114] The first clamp 211 and the second clamp 212 are both fixedly connected to the clamp transmission mechanism 213, and the clamp transmission mechanism 213 drives the first clamp 211 and the second clamp 212 to move while holding the battery cell 10.

[0115] Specifically, such as Figure 10 As shown, in one embodiment, the first clamp 211 and the second clamp 212 provide clamping force to the battery cell 10, clamping the battery cell 10 and causing it to move relative to the electroplating chamber 20. In this battery cell electroplating apparatus, the reciprocating drive assembly 21 may include a clamp transmission mechanism 213. The clamp transmission mechanism 213 may be a linear motion mechanism such as a synchronous belt drive mechanism, a lead screw and slider drive mechanism, or a gear and rack drive mechanism. The power source of these clamp transmission mechanisms 213 may be a motor, a telescopic cylinder, or a hydraulic cylinder. The clamp transmission mechanism 213 is connected to the first clamp 211 and the second clamp 212, providing the clamp with the power to move, and can drive the clamp to reciprocate relative to the electroplating chamber 20, causing the battery cell 10 to reciprocate in and out of the electroplating chamber 20. Therefore, in this reciprocating battery cell electroplating apparatus, driving the clamp to move relative to the electroplating chamber 20 via the clamp transmission mechanism 213 is easier to achieve with a simpler drive mechanism, which simplifies the structural complexity of the reciprocating battery cell electroplating apparatus.

[0116] It should be noted that, in practical applications, the aforementioned clamping transmission mechanism 213 may include two independent first clamping transmission mechanisms and a second clamping transmission mechanism. The first clamping transmission mechanism drives the movement of the first clamp 211, and the second clamping transmission mechanism drives the movement of the second clamp 212. Alternatively, there may be only one clamping transmission mechanism 213, which drives the first clamp 211 and the second clamp 212 at different times. It is understood that the power source driving the first clamp 211 and the second clamp 212 may also be two independent motors, respectively connected to the first clamping transmission mechanism and the second clamping transmission mechanism.

[0117] Optionally, the reciprocating electroplating apparatus for battery cells further includes an electroplating power supply and anode consumables;

[0118] The anode consumable is disposed in the electroplating chamber 20 and electrically connected to the anode of the electroplating power supply. The first clamp 211 and the second clamp 212 are both electrically connected to the cathode of the electroplating power supply.

[0119] When the battery cell 10 is in the electroplating chamber 20, either the first clamp 211 or the second clamp 212 forms an electroplating circuit with the anode consumable and the battery cell 10 for plating on the battery cell 10.

[0120] Specifically, in one embodiment, a first clamp 211 and a second clamp 212 can be made of conductive material, and the first clamp 211 and the second clamp 212 are electrically connected to the cathode of the electroplating power supply. The anode of the electroplating power supply is also electrically connected to the anode consumable in the electroplating chamber 20. The first clamp 211 and the second clamp 212 can clamp the feed point at the edge of the battery cell 10. It should be noted that the feed point is also the solder pad at the end of the electrode, which can be used to solder to the busbar. Thus, when the battery cell 10 enters the electroplating chamber 20, the clamp holding the battery cell 10 can form a circuit for plating on the battery cell together with the anode consumable and the battery cell 10. The part of the battery cell 10 inside the electroplating chamber 20 can be plated to form an electrode under the conductive action of the clamp, which can simplify the cathode structure of the electroplating device.

[0121] Optionally, the reciprocating electroplating apparatus for battery cells further includes an electroplating power supply, an anode consumable, and a conductive cathode;

[0122] The anode consumable is disposed inside the electroplating chamber 20 and electrically connected to the anode of the electroplating power supply, and the conductive cathode is electrically connected to the cathode of the electroplating power supply.

[0123] When the battery cell 10 is in the electroplating chamber, the anode consumable, the battery cell 10 and the conductive cathode form an electroplating circuit for plating on the battery cell 10.

[0124] Specifically, in one embodiment, if the first clamp 211 and the second clamp 212 are made of insulating material and do not have conductive properties, a conductive cathode can be specially provided in the reciprocating electroplating device for the battery cell. This conductive cathode is not limited to a roller shape or a brush shape. The conductive cathode is electrically connected to the cathode of the electroplating power supply, and the anode of the electroplating power supply is also electrically connected to the anode consumable in the electroplating chamber 20. When the battery cell 10 enters the electroplating chamber 20, the anode consumable, the battery cell 10, and the conductive cathode together form an electroplating circuit for plating on the battery cell 10. During the electroplating process, the first clamp 211 and the second clamp 212 only provide the driving force to move the battery cell 10.

[0125] Optionally, refer to Figure 11 and Figure 12 The clamp transmission mechanism 213 includes a transmission component 2131, a translation component 2132, a first reset component 2133, and a second reset component 2134;

[0126] The translation component 2132 is connected to the transmission component 2131, and the transmission component 2131 drives the translation component 2132 to translate along the transmission direction of the battery cell 10.

[0127] Along the direction from the first side to the second side of the electroplating cavity 20, the translation member 2132 is used to drive the second clamp 212 to translate gradually away from the electroplating cavity 20, and the first reset assembly 2133 is used to drive the first clamp 211 to translate back to a position close to the electroplating cavity 20.

[0128] Along the direction from the second side to the first side of the electroplating cavity 20, the translation member 2132 is used to drive the first clamp 211 to translate gradually away from the electroplating cavity 20, and the second reset assembly 2134 is used to drive the second clamp 212 to translate back to a position close to the electroplating cavity 20.

[0129] Specifically, such as Figure 11 and Figure 12 As shown, in one embodiment, when a clamping transmission mechanism 213 is used to drive both the first clamp 211 and the second clamp 212, the clamping transmission mechanism 213 may include a transmission component 2131, a translation component 2132, a first reset assembly 2133, and a second reset assembly 2134. The translation component 2132 is connected to the transmission component 2131, and the transmission component 2131 may be connected to a power source such as a drive motor, electric cylinder, or pneumatic cylinder.

[0130] For example, when the drive motor is the power source, if the transmission component 2131 is a synchronous belt, the synchronous belt meshes with the synchronous pulley, and the synchronous pulley is directly connected to the output shaft of the drive motor or connected through a reducer. The translation component 2132 is fastened to the synchronous belt by a clamp. When the drive motor rotates forward and reverse, the synchronous belt can drive the translation component 2132 to move along the transmission direction of the battery cell 10. When the drive motor is the power source, if the transmission component 2131 is a lead screw, the lead screw is directly connected to the output shaft of the drive motor or connected through a reducer. The translation component 2132 is threaded onto the lead screw and can also be slidably connected to a guide rod for guidance. When the drive motor rotates forward and reverse, the lead screw can drive the translation component 2132 to move along the transmission direction of the battery cell 10. It should be noted that the translation component 2132 can also be a slider with a groove, which can be slidably connected to the body support of the battery cell electroplating device through a slide rail. Under the drive of the transmission component 2131, the translation component 2132 can slide on the surface of the slide rail. Furthermore, in practical applications, the aforementioned translation member 2132 can be a relatively long beam-shaped slider. When the translation member 2132 slides to contact any clamp, it can apply a pushing force to the corresponding clamp. When the translation member 2132 slides to separate from any clamp, the pushing force disappears. The following embodiments will further illustrate this using the translation member 2132 that provides the pushing force as an example.

[0131] Combination Figure 11 and Figure 12 As illustrated, the transmission component 2131 and the translation component 2132 are used to provide thrust to the first clamp 211 and the second clamp 212, causing them to move away from the electroplating chamber 20. To enable the first clamp 211 and the second clamp 212 to return to a position close to the electroplating chamber 20, the clamp transmission mechanism 213 further includes a first reset assembly 2133 and a second reset assembly 2134. The first reset assembly 2133 is used to drive the first clamp 211 to translate to a position close to the electroplating chamber 20, and the second reset assembly 2134 is used to drive the second clamp 212 to translate to a position close to the electroplating chamber 20.

[0132] like Figures 13 to 14 as well as Figures 15 to 17 The diagram illustrates the complete translational transfer process of the battery cell 10 as an example. When the battery cell 10 is transferred to the working area of ​​the first clamp 211, after the first clamp 211 clamps the battery cell 10, under the action of the first reset component 2133, the first clamp 211 translates along direction A from the first side I to the second side II of the electroplating cavity 20 until it moves to a position close to the electroplating cavity 20 and is stopped by the stop action of the limiting component, thus sending the battery cell 10 into the electroplating cavity 20. When the battery cell 10 extends out of the electroplating cavity 20, the battery cell 10 enters the working area of ​​the second clamp 212. At this time, after the second clamp 212 clamps the battery cell 10, the first clamp 211 releases the battery cell 10. The translation component 2132 contacts the second clamp 212 and pushes the second clamp 212 to translate along direction A as shown in the diagram, gradually moving away from the electroplating cavity 20, thus pulling the battery cell out of the electroplating cavity 20.

[0133] Similarly, when the translation member 2132 moves along the A' direction from the second side II to the first side I of the electroplating cavity 20 under the action of the transmission member 2131, the second reset component 2134 acts on the second clamp 212 to return it to a position close to the electroplating cavity 20 to continue waiting for the subsequent extension of the battery cell 10. After the translation member 2132 contacts the first clamp 211, it continues to push the first clamp 211 to translate along the A' direction shown in the figure, gradually moving away from the electroplating cavity 20. After clamping a new battery cell 10 at the position where the battery cell 10 is received, it is fed into the electroplating cavity 20 again along the A direction shown in the figure.

[0134] As described above, the set of clamp transmission mechanism 213, consisting of transmission component 2131, translation component 2132, first reset component 2133 and second reset component 2134, can realize the relay transmission action of the first clamp 211 and the second clamp 212, and complete the reciprocating transmission process of the battery cell 10 entering and exiting both sides of the electroplating chamber 20.

[0135] Optionally, at least one of the first reset component 2133 and the second reset component 2134 is selected from any one of the reset traction hammer, the reset spring, and the magnetic reset component.

[0136] Specifically, the first reset component 2215 and the second reset component 2216 can be reset components with the same or different structures. For example, they can be reset components consisting of a traction steel wire rope and a counterweight fixedly connected, or they can be reset springs or magnetically attracted reset components that work by magnetic attraction.

[0137] The following explanation uses the reset function of the first clamp 211 as an example. When the reset assembly uses a reset traction hammer, one end of the traction steel wire rope can be fixedly connected to the first clamp 211, and the other end can be fixedly connected to the hammer. The pulley mechanism guides the wiring of the steel wire rope. When the translation component 2132 contacts the first clamp 211 and blocks the first clamp 211 from the electroplating chamber 20, the hammer is pulled up and has gravitational potential energy. As the translation component 2132 gradually moves along... Figure 13 The movement in direction A, as indicated, is pulled by the weight, converting gravitational potential energy into kinetic energy of the first clamp 211, allowing it to move closer to the electroplating chamber 20. When the reset assembly uses a reset spring, one end of the spring can be fixedly connected to the first clamp 211, and the other end connected to the frame of the battery electroplating device where the electroplating chamber 20 is located. When the translation member 2132 contacts the first clamp 211, blocking it from moving away from the electroplating chamber 20, the spring is stretched and possesses elastic potential energy. As the translation member 2132 gradually moves along... Figure 13 The movement in direction A, as indicated, is caused by the elastic potential energy being converted into the kinetic energy of the first clamp 211 under the pull of the spring, allowing the first clamp 211 to move to a position close to the electroplating chamber 20. When the reset assembly uses a magnetic reset assembly, it can be a magnet with opposite magnetic poles placed at the relative contact positions on the first clamp 211 and the translation member 2132, or it can be a permanent magnet and an electromagnet. When the translation member 2132 blocks the first clamp 211 and is in a position away from the electroplating chamber 20, a magnetic attraction is formed between the first clamp 211 and the translation member 2132. As the translation member 2132 gradually moves along... Figure 13 The movement in direction A is illustrated. Under magnetic attraction, the translation member 2132 attracts and drives the first clamp 211 to a position close to the electroplating chamber 20. Since the first clamp 211 stops at this position due to the stop of the limiting member, the magnetic connection between the first clamp 211 and the translation member 2132 is forced to break. The continued movement of the translation member 2132 can then push the second clamp 212 to move along direction A. The reset function of the second clamp 212 is similar to the reset principle of the first clamp 211, and will not be described further here.

[0138] It is understandable that the aforementioned reset traction hammer, reset spring, and magnetic reset assembly can utilize different forms of energy conversion to achieve the reset of the clamp. Compared with the conventional method of relying on motors and other mechanisms to achieve reset, the structure is simple, which helps to reduce the size of the device, and is more energy-efficient and lower in cost.

[0139] Optionally, refer to Figure 13 The clamp transmission mechanism 213 further includes an adjustment component 2135 for adjusting the horizontal distance between the translation member 2132 and the first clamp 211 or the second clamp 212;

[0140] The adjustment component 2135 is connected to the translation component 2132.

[0141] Specifically, combined Figure 13 As illustrated, when the translator 2132 pushes the first clamp 211 or the second clamp 212 to move, the translator 2132 abuts against either clamp. To allow the distance between the translator 2132 and the clamp to be adaptively increased or decreased, an adjustment component 2135 can be connected to the translator 2132. It should be noted that the adjustment component 2135 can be fixed to one side of the translator 2132 by welding or structural adhesive bonding, or a detachable connection structure can be designed to detachably connect the adjustment component 2135 to the translator 2132.

[0142] For example, an adjusting component 2135 is fixedly connected to the surface of the translator 2132 facing the first clamp 211, and another adjusting component 2135 is fixedly connected to the surface of the translator 2132 facing the second clamp 212. When the translator 2132 pushes the first clamp 211 or the second clamp 212 to move, the corresponding adjusting component 2135 is positioned between the translator 2132 and the corresponding first clamp 211 or second clamp 212. The length of the adjusting component 2135 is variable; increasing the length of the adjusting component 2135 increases the distance between the translator 2132 and the first clamp 211 or the second clamp 212, while decreasing the length of the adjusting component 2135 decreases the distance between the translator 2132 and the first clamp 211 or the second clamp 212. The adjusting component 2135 may include a fixing nut and an adjusting rod, which may be a bolt, screw, or threaded rod. The fixing nut can be fixed to the surface of the translating member facing the clamp by welding or structural adhesive. Specifically, the fixing nut can be connected to the surface facing the first clamp and / or the second clamp. The adjusting rod is screwed into the fixing nut via a threaded connection. When the transmission member 2213 drives the translating member 2214 to translate, the adjusting rod also translates along with the translating member 2214. The exposed end of the adjusting rod can contact the first clamp 211 or the second clamp 212 to drive the corresponding clamp to move. By rotating the adjusting rod, the extension length of the adjusting rod can be increased or decreased, thereby adjusting the distance between the translating member 2132 and the clamp.

[0143] By adding the adjustment component 2135 to adjust the horizontal distance between the translation component 2132 and the fixture, on the one hand, the battery cell electroplating device can be initially adjusted to ensure that the feeding point of the fixture and the battery cell 10 is aligned; on the other hand, the change in spacing can also be used to electroplat battery cells 10 of different specifications and sizes.

[0144] Optionally, at least one of the first clamp 211 and the second clamp 212 is provided with a buffer pad between itself and the translation member 2132.

[0145] Specifically, to reduce vibrations caused by collisions when the translation member 2132 pushes the clamps, buffer pads can be provided between the translation member 2132 and the corresponding clamps. For example, silicone pads or felt pads can be bonded to the surface of the translation member 2132 facing the first clamp 211 and / or the second clamp 212, or they can be bonded to the part where the adjusting component 2135 contacts the clamps. Thus, the elastic deformation of the buffer pads can absorb vibration energy.

[0146] Optionally, refer to Figure 2 , Figure 4 , Figure 6 as well as Figure 18The first clamp 211 or the second clamp 212 clamps at least one end of the battery cell 10 in a first direction. The first direction is the direction of the line connecting the two feed points on opposite sides of the battery cell 10. The first direction is parallel or perpendicular to the direction of movement of the battery cell 10.

[0147] Specifically, such as Figure 2 , Figure 4 , Figure 6 As shown, in one embodiment, the battery cell 10 can be considered as a rectangle with two mutually perpendicular first and second directions. When the battery cell 10 translates along the direction indicated by the arrow in the figure under the clamping action of the first clamp 211 or the second clamp 212, the first clamp 211 or the second clamp 212 can clamp at least one end of the battery cell 10 in the first direction. The first direction is the direction of the line connecting the two opposite feed points on the battery cell 10, and the moving direction of the battery cell 10 is parallel to the first direction. For example, when the battery cell 10 moves along... Figure 2 When the battery cell 10 reciprocates in and out of the electroplating chamber 20 along directions A and A', the first clamp 211 can hold the A1 end of the battery cell 10, feeding the battery cell 10 into the electroplating chamber 20 along direction A and pulling it out of the electroplating chamber 20 along direction A'. Figure 4 When the battery cell 10 reciprocates in and out of the electroplating chamber 20 along directions A and A', the second clamp 212 can hold the A2 end of the battery cell 10, feeding the battery cell 10 into the electroplating chamber 20 along the A' direction and pulling it out of the electroplating chamber 20 along the A direction. Figure 6 When the battery cell 10 moves back and forth in and out of the electroplating chamber 20 in the directions A and A', the first clamp 211 can clamp the A1 end of the battery cell 10 and feed the battery cell 10 into the electroplating chamber 20 in the direction A. The second clamp 212 can clamp the A2 end of the battery cell 10 and pull the battery cell 10 out of the electroplating chamber 20 in the direction A'.

[0148] In addition, such as Figure 18 As shown, in another embodiment, the direction of movement of the battery cell 10 can be perpendicular to the first direction. For example, when the battery cell 10 moves along... Figure 18 When the schematic A and A' directions reciprocate relative to the electroplating cavity 20, the first clamp 211 or the second clamp 212 can clamp the A1 end or A2 end of the battery cell 10 in the direction perpendicular to A, or it can clamp both A1 and A2 ends simultaneously. Figure 18The illustration is easy to understand. When the first direction of the battery cell 10 is perpendicular to the moving direction, at least one end of the battery cell 10 is clamped at both ends of the battery cell 10 in the first direction. This facilitates the clamping and separation of the battery cell 10 from the first clamp 211 or the second clamp 212. The movement trajectory of the first clamp 211 or the second clamp 212 is simpler, and there is no need to specially design the incoming orientation of the battery cell. In order to achieve the first clamp 211 or the second clamp 212 according to... Figure 18 The diagram illustrates the clamping of the battery cell 10. During the transfer of the battery cell 10 to the battery cell electroplating apparatus, a robotic arm or a direction-reversible transfer device can be used to rotate the battery cell 10, ensuring that its first direction is perpendicular to the direction of movement after entering the electroplating apparatus. Therefore, when the first clamp 211 or the second clamp 212 clamps the battery cell 10 from the left or right sides of its direction of movement, the clamping and separation process between the battery cell 10 and the first clamp 211 or the second clamp 212 is simplified, while also ensuring the effectiveness of the electroplating circuit.

[0149] Optionally, refer to Figures 19 to 21 At least one of the first clamp 211 and the second clamp 212 includes a mounting base 221, a first clamping member 222, a second clamping member 223, and a clamping member driving mechanism 224;

[0150] The first clamping member 222 and the second clamping member 223 are both slidably connected to the mounting base 221, and the first clamping member 222 and the second clamping member 223 are arranged opposite to each other;

[0151] The clamping member driving mechanism 224 is disposed on the mounting base 221 and is used to drive the first clamping member 222 and the second clamping member 223 to move relative to each other to clamp the battery cell 10.

[0152] Specifically, such as Figures 19 to 21As shown, at least one of the aforementioned first clamp 211 and second clamp 212 may include a mounting base 221, a first clamping member 222, a second clamping member 223, and a clamping member driving mechanism 224. The mounting base 221 may be a connecting base manufactured by sheet metal processing or machining, while the first clamping member 222 and the second clamping member 223 are components that press against the surface of the battery cell 10. Both the first clamping member 222 and the second clamping member 223 are slidably connected to the mounting base 221, and the first clamping member 222 and the second clamping member 223 are arranged opposite to each other. It should be noted that when the battery cell 10 is electroplated in a vertical position, the first clamping member 222 and the second clamping member 223 are arranged opposite to each other in the horizontal direction; when the battery cell 10 is electroplated in a horizontal position, the first clamping member 222 and the second clamping member 223 are arranged opposite to each other in the vertical direction. Furthermore, in the actual electroplating process, depending on the type of the battery cell 10, at least one of the first clamping member 222 and the second clamping member 223 can be designed as a conductive member, thereby realizing single-sided or double-sided electroplating of the battery cell 10.

[0153] When performing the clamping function of the battery cell 10, the first clamping member 222 and the second clamping member 223 can be driven to move relative to each other by the clamping member drive mechanism 224 connected to the mounting base 221, so that the first clamping member 222 and the second clamping member 223 move closer or further apart to achieve clamping of the battery cell 10. In this embodiment of the invention, when both the first clamping member 222 and the second clamping member 223 slide relative to the mounting base 221, the first clamping member 222 and the second clamping member 223 can share the same clamping member drive mechanism 224 to improve the efficiency of the clamping action. In addition, independent clamping member drive mechanisms 224 can also be used to drive them, forming a redundant design to avoid downtime caused by the failure of a single clamping member drive mechanism.

[0154] Optionally, the clamping member driving mechanism 224 includes a first clamping member driving mechanism, the first clamping member 222 is connected to the first clamping member driving mechanism, and the first clamping member driving mechanism drives the first clamping member 222 to move;

[0155] And / or,

[0156] The clamping member driving mechanism 224 includes a second clamping member driving mechanism, the second clamping member 223 is connected to the second clamping member driving mechanism, and the second clamping member driving mechanism drives the second clamping member 223 to move.

[0157] Specifically, in practical applications, when only the movement of the first clamping member 222 is needed to achieve the clamping function, the first clamping member 222 can be connected to a first clamping member drive mechanism. The first clamping member drive mechanism moves the first clamping member 222 closer to or further away from the second clamping member 223. During this movement, the second clamping member 223 remains stationary on the mounting base 221. Similarly, when only the movement of the second clamping member 223 is needed to achieve the clamping function, the second clamping member 223 can be connected to a second clamping member drive mechanism. The second clamping member drive mechanism moves the second clamping member 223 closer to or further away from the first clamping member 222. During this movement, the first clamping member 222 remains stationary on the mounting base 221. Alternatively, both a first clamping member drive mechanism and a second clamping member 223 drive mechanism can be simultaneously provided, driving the first clamping member 222 and the second clamping member 223 to move independently, respectively.

[0158] Whether there is one or two clamping member drive mechanisms 224, the clamping member drive mechanism 224 can be implemented using miniature pneumatic components or lead screw and slider components. For example, a pneumatic valve can be used to connect the first clamping member 222 and the second clamping member 223 simultaneously, and an air pump can be used to deliver compressed air to drive the movement of the first clamping member 222 and the second clamping member 223.

[0159] Optionally, refer to Figures 22 to 24 Each of the first clamping member 222 and the second clamping member 223 includes a strip-shaped connecting base 225 and a clamping part 226. The clamping parts 226 are connected to the connecting base 225 and arranged along the length direction of the connecting base 225.

[0160] During the electroplating process, the clamping part 226 is electrically connected to the electrode feed point on the surface of the battery cell 10.

[0161] Specifically, such as Figures 22 to 24 Regardless of their structural form, the first clamping member 222 and the second clamping member 223 used to clamp the battery cell 10 both include a strip-shaped connecting base 225 and a clamping portion 226. The strip-shaped connecting base 225 serves both as a mounting carrier for the clamping portion 226 and as a component connecting the clamping member to the mounting base 221 of the fixture. The clamping portion 226 is connected to the connecting base 225 and arranged along the length of the connecting base 225. When the clamping member needs to transmit current, the clamping portion 226 can be made of conductor and extend from the connecting base 225 for electrical connection with the electrode feed point on the surface of the battery cell 10 during the electroplating process. For example, the clamping portion 226 can be entirely made of conductor or only have conductive material at the location corresponding to the feed point.

[0162] Optionally, refer to Figure 22 , Figure 25 and Figure 26 The clamping part 226 includes a coarse diameter part 2261 and a fine diameter part 2262, and the coarse diameter part 2261 and the fine diameter part 2262 are connected to form a stepped shaft structure;

[0163] The coarse diameter portion 2261 is connected to the connecting base 225, and the fine diameter portion 2262 is used to electrically connect to the electrode feed point.

[0164] Specifically, such as Figure 22 , Figure 25 and Figure 26 The diagram shows a schematic of a clamping component. The clamping part 226 has a columnar structure, specifically including a coarse-diameter part 2261 and a narrow-diameter part 2262 that are integrated together, forming a stepped shaft structure. The coarse-diameter part 2261 is connected to the connecting base 225 by welding, interference fit, or other methods to ensure the reliability of the connection. The narrow-diameter part 2262 is used for electrical connection with the electrode feed point. The relatively narrow cross-sectional area of ​​the narrow-diameter part 2262 can avoid causing a large area of ​​shading on the surface of the solar cell 10.

[0165] Optionally, refer to Figure 25 and Figure 26 The coarse diameter portion 2261 and the fine diameter portion 2262 are elastically connected.

[0166] Specifically, such as Figure 25 and Figure 26 As shown, the clamping portions arranged along the length of the connecting base 225 include multiple coarse-diameter portions 2261 and fine-diameter portions 2262. When the fine-diameter portions 2262 at different positions contact the feeding point of the battery cell 10, uneven clamping force may cause the fine-diameter portions 2262 to fail to reliably contact the feeding point. Therefore, the coarse-diameter portions 2261 and fine-diameter portions 2262 can be elastically connected using springs or other elastic elements, so that the fine-diameter portions 2262 can move relative to the coarse-diameter portions 2261. When the clamping portion 226 is in press-fit contact with the battery cell 10, the spring elastic force can eliminate the gap between the fine-diameter portions 2261 and the feeding point of the battery cell 10, ensuring reliable contact between the fine-diameter portions 2261 and the feeding point of the battery cell.

[0167] Optionally, refer to Figure 23 , Figure 27 and Figure 28 The connecting base 225 is provided with a plurality of pre-embedded holes at intervals along its length, and each pre-embedded hole is embedded with a plurality of fine filaments to form a bundle of clamping parts 226.

[0168] Specifically, such as Figure 23 , Figure 27 and Figure 28The diagram illustrates another type of clamping component. Multiple pre-embedded holes are spaced along the length of the connecting base 225. Several fine wires with a diameter of approximately 60 micrometers are embedded in each pre-embedded hole, forming a conductive wire bundle with a diameter of approximately 5 mm. The multiple conductive wire bundles within the pre-embedded holes constitute the clamping part 226. The diameter of this conductive wire bundle is slightly larger than the diameter of the feed point. When the conductive wire bundle contacts the feed point, the slightly larger diameter provides good tolerance performance, allowing for a certain degree of deflection and ensuring smooth conductivity between the conductive wire bundle and the feed point. Furthermore, in practical applications, combined with… Figure 23 and Figure 28 As illustrated, an elastic element can also be embedded in each pre-embedded hole to elastically connect each conductive wire bundle to the connecting substrate, thereby eliminating the gap between the conductive wire bundle and the feed point.

[0169] Optionally, refer to Figure 24 The clamping portion 226 includes a dense flexible conductive medium arranged along the length direction of the connecting substrate.

[0170] Specifically, refer to Figure 24 The diagram illustrates another type of clamping device. In this device, the clamping portion 226 includes a dense, flexible conductive medium arranged along the length of the connecting substrate 225. This conductive medium can be made of the same or similar material as the filaments forming the conductive bundle, or it can be other conductive materials such as a flexible conductive adhesive that has undergone curing treatment. Thus, the densely arranged flexible conductive medium can ensure both the conductivity reliability at the feed point and prevent scratches on the battery cells.

[0171] Optionally, refer to Figure 29 The reciprocating electroplating device for battery cells also includes a first liquid-blocking roller assembly 22 and a second liquid-blocking roller assembly 23;

[0172] The first liquid blocking roller assembly 22 and the second liquid blocking roller assembly 23 are spaced apart to form the electroplating chamber. The first liquid blocking roller assembly 22 has a first slit for the battery cell 10 to pass through, and the second liquid blocking roller assembly 23 has a second slit for the battery cell 10 to pass through. The first slit and the second slit are in the same horizontal plane.

[0173] Specifically, in one embodiment, the aforementioned reciprocating electroplating device for battery cells can use liquid-resistant rollers to form the electroplating chamber. For example... Figure 29As illustrated, a first liquid-blocking roller assembly 22 and a second liquid-blocking roller assembly 23 are arranged at positions before and after the battery cell 10 along the transport direction. Each liquid-blocking roller assembly includes upper and lower liquid-blocking rollers. The lower liquid-blocking roller is driven by a drive motor and serves as the active roller. The upper liquid-blocking roller is floating and rests on top of the active roller by its own weight. When no battery cell 10 is passing through the electroplating chamber, the upper and lower liquid-blocking rollers form line contact to prevent electrolyte leakage. When the battery cell 10 passes through the electroplating chamber, it lifts the upper liquid-blocking roller, forming a slit between them for the battery cell 10 to pass through. The first liquid-blocking roller assembly 22 has a first slit for the battery cell 10 to pass through, and the second liquid-blocking roller assembly 23 has a second slit for the battery cell 10 to pass through. The first and second slits are on the same horizontal plane, ensuring that the battery cell 10 enters and exits the electroplating chamber in a horizontal posture.

[0174] Optionally, the reciprocating drive assembly 21 is connected to the outer wall of the electroplating chamber 20, and the reciprocating drive assembly 21 is used to drive the electroplating chamber 20 to translate.

[0175] Specifically, in addition to driving the battery cell 10 to move via the reciprocating drive assembly 21, the aforementioned reciprocating electroplating device can also keep the battery cell 10 stationary while the reciprocating drive assembly 21 drives the electroplating chamber 20 to move, thus achieving relative reciprocating motion between the two to complete the electroplating process. Specifically, the moving parts of the reciprocating drive assembly 21 are fixedly connected to the outer wall of the tank forming the electroplating chamber 20. When the reciprocating drive assembly 21 is activated, the electroplating chamber 20 can move reciprocally along a straight line, thereby generating relative displacement with the battery cell 10, and achieving the effect of the battery cell 10 reciprocating in and out of the electroplating chamber 20.

[0176] This invention also provides a reciprocating electroplating apparatus for battery cells, wherein the reciprocating electroplating apparatus for battery cells is provided with an electroplating chamber for containing electroplating solution;

[0177] The reciprocating electroplating device for battery cells includes an anode consumable, a clamp transmission mechanism, and a conductive clamp. The anode consumable is disposed in the electroplating chamber and electrically connected to the anode of the power supply, and the conductive clamp is electrically connected to the cathode of the power supply.

[0178] The conductive clamp is fixedly connected to the clamp transmission mechanism. The conductive clamp is used to clamp the battery cell. The clamp transmission mechanism drives the conductive clamp to reciprocate synchronously with the battery cell on at least one side of the electroplating chamber.

[0179] When the battery cell is in the electroplating chamber, the anode consumable, the battery cell, and the conductive clamp form an electroplating circuit for plating on the battery cell.

[0180] Specifically, another reciprocating electroplating apparatus for solar cells in this application is similar in structure and principle to the reciprocating electroplating apparatus for solar cells in the aforementioned embodiments, and its structure and accompanying drawings can be found in the accompanying drawings of the aforementioned embodiments. The electroplating chamber is equipped with anode consumables required for the solar cell electroplating process. The anode consumables can be a perforated anode metal plate, anode metal particles placed in a titanium basket, etc., and are electrically connected to the anode of the power supply. To form an effective electroplating circuit, the reciprocating electroplating apparatus for solar cells is also equipped with a conductive clamp, which is electrically connected to the cathode of the power supply, serving as a conductive cathode.

[0181] It should be noted that the structure of the conductive clamp is the same as that of the first clamp 211 or the second clamp 212 in the aforementioned embodiments. The difference is that it can be made of conductive material for transmitting electroplating current. Specifically, the conductive clamp is held at the feed point position of the electrode end on the surface of the battery cell, and can apply clamping force from both surfaces of the battery cell and transmit current to the feed point. When the battery cell is in the electroplating chamber, under the conductive effect of the plating solution on the surface of the battery cell, the anode consumable, the battery cell, and the conductive clamp form an electroplating circuit for plating on the battery cell.

[0182] To eliminate friction between the battery cells and the battery cell transport mechanism during the process of the battery cells entering and exiting the electroplating chamber, the traditional roller-type transport mechanism can be removed in this embodiment of the invention, thereby avoiding wear caused by the upper and lower rollers of the roller-type transport mechanism squeezing and transporting the battery cells. To drive the movement of the battery cells, a conductive clamp can be fixedly connected to a clamp transmission mechanism, which drives the conductive clamp to move. The conductive clamp can be a single clamp arranged on either side of the electroplating chamber, or two conductive clamps arranged simultaneously on both sides of the electroplating chamber. The clamp transmission mechanism can be a linear motion mechanism such as a synchronous belt mechanism, a lead screw and slider mechanism, or a gear and rack mechanism powered by a motor, as shown in the clamp transmission mechanism 213 in the aforementioned embodiment.

[0183] Because the conductive clamp can apply clamping force to the solar cell from both surfaces, and also acts as a conductive cathode, the conductive cathode moves synchronously with the solar cell during the electroplating process. Therefore, the conductive clamp, acting as both a conductive cathode for electroplating and moving synchronously with the solar cell under the action of the clamp's transmission mechanism, eliminates friction between the clamp and the solar cell, preventing wear on the solar cell. Furthermore, in practical applications, the movement range of the conductive clamp can be located outside the electroplating chamber, thus avoiding excessive contact between the clamp and the electroplating solution and reducing the risk of plating on the clamp.

[0184] If there is one conductive clamp, it can hold the battery cell and move it back and forth in the electroplating chamber from one side to perform electrode electroplating, thus meeting the electrode thickness requirements. If there are two conductive clamps, they can hold the battery cell and move it back and forth in the electroplating chamber from both sides to perform electrode electroplating, thus meeting the electrode thickness requirements. For example, after the left conductive clamp feeds the battery cell into the electroplating chamber from the left side, the right conductive clamp pulls the battery cell out from the right side of the electroplating chamber and then moves in the opposite direction to feed the battery cell in from the right side of the electroplating chamber. Similarly, after the left conductive clamp pulls the battery cell out from the left side of the electroplating chamber, it can continue to move in the opposite direction to feed the battery cell in from the left side of the electroplating chamber. In this way, the conductive clamps can carry the battery cell back and forth between the left and right sides of the electroplating chamber to meet the electrode thickness requirements.

[0185] Therefore, in the reciprocating electroplating apparatus for battery cells according to this embodiment of the invention, the conductive clamps hold the battery cells and move synchronously during the process of the battery cells entering and leaving the electroplating chamber. This avoids relative displacement between the battery cells and other transport mechanisms, helps eliminate friction caused by other transport mechanisms on the surface of the battery cells, reduces the risk of scratches on the surface of the battery cells, and improves the surface quality of the battery cells during the electroplating process. Furthermore, this method of electroplating by reciprocating movement of the battery cells reduces the number of devices required for the battery cell electroplating process. That is, the battery cells can be electroplated by reciprocating multiple times in a single device, eliminating the need for multiple devices arranged in an assembly line. Therefore, this electroplating apparatus also helps save production workshop space and reduce equipment manufacturing and usage costs.

[0186] This invention also provides a method for reciprocating electroplating of battery cells, the method being used in the aforementioned reciprocating electroplating apparatus for battery cells, the method comprising:

[0187] The reciprocating drive assembly is controlled to drive the battery cell to reciprocate relative to the electroplating chamber; wherein the area of ​​the reciprocating motion of the battery cell is located at least on one side of the electroplating chamber.

[0188] This invention also proposes a reciprocating electroplating method for battery cells based on the aforementioned reciprocating electroplating apparatus. This method, based on the aforementioned reciprocating drive component, allows for pre-programming control of the reciprocating drive component in the controller of the electroplating apparatus. The reciprocating drive component moves according to a set program, thereby driving the battery cells to reciprocate between any one or both sides of the electroplating chamber. The specific movement process can be found in the detailed descriptions of the aforementioned embodiments, and will not be repeated here. This reciprocating electroplating method for battery cells reduces the transport path for electroplating, which is beneficial for reducing the size and volume of the electroplating apparatus, facilitating its installation layout, and reducing electroplating costs.

[0189] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0190] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A reciprocating electroplating apparatus for battery cells, characterized in that, The reciprocating electroplating device for battery cells is provided with an electroplating chamber for containing electroplating solution, and the reciprocating electroplating device for battery cells includes a reciprocating drive assembly. The reciprocating drive assembly is used to drive the battery cell to move back and forth relative to the electroplating cavity, so as to enter and exit the electroplating cavity, and to make the battery cell reciprocate at least on one side of the electroplating cavity. When the battery cell enters and exits the electroplating chamber, at least two electrode plating layers are formed on the surface of the battery cell; The reciprocating drive assembly includes a first clamp and a second clamp; The first clamp is disposed on a first side outside the electroplating chamber, and the second clamp is disposed on a second side outside the electroplating chamber. Both the first clamp and the second clamp are used to clamp the battery cell; wherein, the first side and the second side are the front and rear sides of the battery cell in the direction of travel within the electroplating chamber. The reciprocating drive assembly also includes a clamp transmission mechanism; Both the first clamp and the second clamp are fixedly connected to the clamp transmission mechanism, and the clamp transmission mechanism drives the first clamp and the second clamp to move while holding the battery cell. The clamp transmission mechanism includes a transmission component, a translation component, a first reset component, and a second reset component. The translation component is connected to the transmission component, and the transmission component drives the translation component to translate along the transmission direction of the battery cell; Along the direction from the first side to the second side of the electroplating cavity, the translation member is used to drive the second clamp to translate gradually away from the electroplating cavity, and the first reset component is used to drive the first clamp to translate back to a position close to the electroplating cavity, wherein the second clamp is in a closed clamping state for holding the battery cell, and the first clamp is in an open releasing state for the battery cell; Along the direction from the second side to the first side of the electroplating cavity, the translation member is used to drive the first clamp to gradually move away from the electroplating cavity, and the second reset assembly is used to drive the second clamp to move back to a position close to the electroplating cavity, wherein the first clamp is in a closed clamping state for holding the battery cell, and the second clamp is in an open releasing state for releasing the battery cell.

2. The reciprocating electroplating apparatus for battery cells according to claim 1, characterized in that, The reciprocating drive assembly drives the battery cell in a horizontal direction, and the battery cell is located in a horizontal plane or a vertical plane; or, the reciprocating drive assembly drives the battery cell in a vertical direction, and the battery cell is located in a vertical plane.

3. The reciprocating electroplating apparatus for battery cells according to claim 1 or 2, characterized in that, The reciprocating electroplating device for battery cells also includes an electroplating power supply and anode consumables; The anode consumable is disposed inside the electroplating chamber and electrically connected to the anode of the electroplating power source; the first clamp and the second clamp are both electrically connected to the cathode of the electroplating power source. When the battery cell is in the electroplating chamber, either the first clamp or the second clamp forms an electroplating circuit with the anode consumable and the battery cell for plating on the battery cell.

4. The reciprocating electroplating apparatus for battery cells according to claim 1 or 2, characterized in that, The reciprocating electroplating device for battery cells also includes an electroplating power supply, an anode consumable, and a conductive cathode; The anode consumable is disposed inside the electroplating chamber and electrically connected to the anode of the electroplating power supply, and the conductive cathode is electrically connected to the cathode of the electroplating power supply. When the battery cell is in the electroplating chamber, the anode consumable, the battery cell, and the conductive cathode form an electroplating circuit for plating on the battery cell.

5. The reciprocating electroplating apparatus for battery cells according to claim 1 or 2, characterized in that, At least one of the first reset assembly and the second reset assembly is selected from any one of the reset traction hammer, reset spring and magnetic reset assembly.

6. The reciprocating electroplating apparatus for battery cells according to claim 1 or 2, characterized in that, The clamp transmission mechanism further includes an adjustment component for adjusting the horizontal distance between the translation member and the first clamp or the second clamp; The adjustment component is connected to the translation component.

7. The reciprocating electroplating apparatus for battery cells according to claim 6, characterized in that, The adjustment assembly includes a fixing nut and an adjustment rod; The translating member has the fixing nut fixed to its surface facing the first clamp and / or the second clamp. The adjusting rod has an external thread and is threadedly connected to the fixing nut. One end of the adjusting rod is used to contact the first clamp or the second clamp to drive the corresponding clamp to move.

8. The reciprocating electroplating apparatus for battery cells according to claim 1 or 2, characterized in that, A buffer pad is provided between at least one of the first clamp and the second clamp and the translation member.

9. The reciprocating electroplating apparatus for battery cells according to claim 1 or 2, characterized in that, The transmission component includes a synchronous pulley connected to a drive motor, and a synchronous belt wound around the synchronous pulley; The translation component is fixedly connected to the timing belt.

10. The reciprocating electroplating apparatus for battery cells according to claim 1 or 2, characterized in that, The first clamp or the second clamp holds at least one end of the battery cell in a first direction, where the first direction is the direction of the line connecting the two opposite feed points on the battery cell, and the direction of movement of the battery cell is parallel or perpendicular to the first direction.

11. The reciprocating electroplating apparatus for battery cells according to claim 1 or 2, characterized in that, At least one of the first clamp and the second clamp includes a mounting base, a first clamping member, a second clamping member, and a clamping member driving mechanism; Both the first clamping member and the second clamping member are slidably connected to the mounting base, and the first clamping member and the second clamping member are arranged opposite to each other; The clamping member driving mechanism is disposed on the mounting base and is used to drive the first clamping member and the second clamping member to move relative to each other to clamp the battery cell.

12. The reciprocating electroplating apparatus for battery cells according to claim 11, characterized in that, The clamping member driving mechanism includes a first clamping member driving mechanism, the first clamping member is connected to the first clamping member driving mechanism, and the first clamping member driving mechanism drives the first clamping member to move. And / or, The clamping member driving mechanism includes a second clamping member driving mechanism, the second clamping member is connected to the second clamping member driving mechanism, and the second clamping member driving mechanism drives the second clamping member to move.

13. The reciprocating electroplating apparatus for battery cells according to claim 11, characterized in that, Each of the first clamping member and the second clamping member includes a strip-shaped connecting base and a clamping part, wherein the clamping part is connected to the connecting base and arranged along the length direction of the connecting base; During the electroplating process, the clamping part is electrically connected to the electrode feed point on the surface of the battery cell.

14. The reciprocating electroplating apparatus for battery cells according to claim 13, characterized in that, The clamping part includes a large diameter part and a small diameter part, and the large diameter part and the small diameter part are connected to form a stepped shaft structure; The coarse diameter portion is connected to the connecting substrate, and the fine diameter portion is used to electrically connect to the electrode feed point.

15. The reciprocating electroplating apparatus for battery cells according to claim 14, characterized in that, The coarse diameter portion and the fine diameter portion are elastically connected.

16. The reciprocating electroplating apparatus for battery cells according to claim 13, characterized in that, The connecting substrate has multiple pre-embedded holes spaced apart along its length, and each pre-embedded hole is embedded with multiple fine wires to form a bundle of clamping parts.

17. The reciprocating electroplating apparatus for battery cells according to claim 13, characterized in that, The clamping portion includes a dense, flexible conductive medium arranged along the length of the connecting substrate.

18. The reciprocating electroplating apparatus for battery cells according to claim 1, characterized in that, The reciprocating electroplating device for battery cells also includes a first liquid-blocking roller assembly and a second liquid-blocking roller assembly. The first liquid blocking roller assembly and the second liquid blocking roller assembly are spaced apart to form the electroplating chamber. The first liquid blocking roller assembly has a first slit for the battery cell to pass through, and the second liquid blocking roller assembly has a second slit for the battery cell to pass through. The first slit and the second slit are in the same horizontal plane.

19. The reciprocating electroplating apparatus for battery cells according to claim 1, characterized in that, The reciprocating drive assembly is connected to the outer wall of the electroplating chamber, and the reciprocating drive assembly is used to drive the electroplating chamber to reciprocate and translate relative to the battery cell.

20. A reciprocating electroplating apparatus for battery cells, characterized in that, The reciprocating electroplating device for battery cells is provided with an electroplating chamber for containing electroplating solution; The electroplating apparatus includes an anode consumable, a clamp transmission mechanism, and a conductive clamp. The anode consumable is disposed in the electroplating chamber and electrically connected to the anode of the power supply, and the conductive clamp is electrically connected to the cathode of the power supply. The conductive clamp is fixedly connected to the clamp transmission mechanism. The conductive clamp is used to clamp the battery cell. The clamp transmission mechanism drives the conductive clamp to reciprocate synchronously with the battery cell on at least one side of the electroplating chamber. When the battery cell is in the electroplating chamber, the anode consumable, the battery cell, and the conductive clamp form an electroplating circuit for plating on the battery cell; The clamp transmission mechanism includes a transmission component, a translation component, and a reset component; The translation component is connected to the transmission component, and the transmission component drives the translation component to translate along the transmission direction of the battery cell; Along the direction from one side of the electroplating cavity to the other two sides, the translation member is used to drive the conductive clamp to gradually move away from the electroplating cavity, and the reset assembly is used to drive the conductive clamp to move back to a position close to the electroplating cavity.

21. A method for reciprocating electroplating of battery cells, characterized in that, The method is used in the reciprocating electroplating apparatus for battery cells according to any one of claims 1 to 20, the method comprising: The reciprocating drive assembly is controlled to drive the battery cell to reciprocate relative to the electroplating chamber; wherein the area of ​​the reciprocating motion of the battery cell is located at least on one side of the electroplating chamber.

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