Electroplating equipment

Abstract

The utility model belongs to the technical field of electroplating, and discloses an electroplating device, which comprises: an electroplating tank, comprising a plurality of tank cavities arranged in sequence along a first direction, each tank cavity having an electroplating station; an anode member arranged adjacent to the electroplating station to form an electric field between the anode member and a battery cell located on the electroplating station during electroplating; a conveying mechanism, which is used to convey the battery cell so that the battery cell can pass through the plurality of electroplating stations in sequence; wherein the downstream of each tank cavity comprises a first support member, a drying assembly and a second support member arranged in sequence, so that during the drying process, the first support member and the second support member can respectively support the battery cell from the upstream and downstream of the drying assembly, thereby reducing the risk of displacement or breakage of the battery cell during the drying process.

Description

Technical Field

[0001] The utility model relates to the technical field of electroplating, in particular to an electroplating device. Background Art

[0002] Screen printing is currently the mainstream technology for preparing metal grid lines on solar cells, but the silver paste used in screen printing is expensive, which has led some innovative entities in the photovoltaic industry to continuously explore lower-cost metallization technologies, such as copper electroplating technology.

[0003] The principle of copper electroplating technology is to set an anode in the plating solution and connect the anode to the positive pole of the electroplating power supply, contact the area to be plated of the battery cell with the plating solution and connect the battery cell to the negative pole of the electroplating power supply, so that the battery cell is set near the anode or can be moved near the anode, and then an electric field is formed between the anode and the battery cell, and the metal cations in the plating solution are deposited on the battery cell through the action of the electric field to form metal grid lines.

[0004] According to the state of the battery cell during electroplating, the copper electroplating technology is divided into horizontal electroplating technology and vertical electroplating technology. In the horizontal electroplating technology, the battery cell can be connected to the negative pole of the electroplating power supply through a conductive roller. The connection point between the conductive roller and the battery cell will be electroplated, making the battery cell and the conductive roller easily adhered together after electroplating, which will lead to the battery cell breaking. In addition, the resistance of the conductive roller after electroplating changes, which will further affect the uniformity of subsequent battery cell electroplating. Therefore, it is necessary to reduce or avoid the risk of electroplating at the connection point between the conductive roller and the battery cell.

[0005] For example, isolating the area on the cell that is being electroplated from the area on the cell that is connected to the conductive roller can reduce or avoid the situation where the connection point between the conductive roller and the cell is electroplated. In this process, the area on the cell that has been through the plating solution needs to be dried to ensure that when the area on the cell that has been through the plating solution contacts the conductive roller, it will not cause the conductive roller to be electroplated again. However, technical issues such as how to effectively dry, how to ensure that the cell does not shift during the drying process, and how to reduce or avoid the risk of cell fragments need further research and resolution. Utility Model Content

[0006] The purpose of the utility model is to provide an electroplating device to at least solve one of the technical problems in the background technology.

[0007] In order to achieve the above technical purpose, the utility model adopts the following technical solutions.

[0008] An embodiment of the utility model provides an electroplating device, comprising:

[0009] An electroplating tank, comprising a plurality of tank cavities arranged in sequence and at intervals along a first direction, each of the tank cavities having an electroplating station;

[0010] an anode member, disposed adjacent to the electroplating station, so as to form an electric field between the anode member and the battery sheet located on the electroplating station during electroplating;

[0011] A conveying mechanism, used for conveying the battery cells so that the battery cells can pass through a plurality of electroplating stations in sequence;

[0012] Wherein, the downstream of each of the slot cavities comprises a first support member, a drying assembly and a second support member which are arranged in sequence and spaced apart from each other, so that during the drying process, the first support member and the second support member can support the battery cells from the upstream and downstream of the drying assembly respectively.

[0013] In some embodiments, the conveying mechanism includes a transmission assembly and a conductive assembly, the transmission assembly includes a transmission roller for conveying the battery sheet, and the conductive assembly includes a conductive roller for conducting electricity to the battery sheet;

[0014] The transmission assembly is formed into a first support member and a second support member;

[0015] Alternatively, the conductive component is formed as a first support member and a second support member;

[0016] Alternatively, the transmission component is formed as a first support member, and the conductive component is formed as a second support member;

[0017] Alternatively, the transmission component is formed as a second support member, and the conductive component is formed as a first support member.

[0018] In some embodiments, when the transmission component is formed as a first support member and a second support member, the conductive component is disposed downstream of the second support member.

[0019] In some embodiments, at least a portion of the transmission roller is located outside the groove cavity, and the transmission roller located outside the groove cavity is formed into a liquid-blocking structure to prevent the plating liquid from flowing through the contact point between the transmission roller and the battery cell.

[0020] In some embodiments, two sets of transmission components are disposed oppositely upstream and downstream of each groove cavity, and a liquid-blocking area is formed between the two sets of transmission components.

[0021] In some embodiments, the transmission assembly further includes a pressing sheet structure cooperating with the transmission roller to enable the battery cell to remain in contact with the transmission roller when the transmission roller conveys the battery cell; and / or, the conductive assembly further includes a pressing sheet structure cooperating with the conductive roller to enable the battery cell to remain in contact with the conductive roller when the conductive roller conducts electricity to the battery cell.

[0022] In some embodiments, two sets of transmission components are relatively arranged upstream and downstream of each groove cavity, a lower liquid-blocking area is formed between the transmission rollers in the two sets of transmission components, and an upper liquid-blocking area is formed between the pressing structures in the two sets of transmission components.

[0023] In some embodiments, the sheeting structure is a pressing roller or a pressing block.

[0024] In some embodiments, the drying component includes a negative pressure adsorption mechanism, which can absorb liquid on the surface of the battery cell to dry the battery cell; and / or, the drying component includes an air drying mechanism, which can air dry liquid on the surface of the battery cell to dry the battery cell.

[0025] In some embodiments, the transmission component and the conductive component are located between two adjacent cavities to reduce the contact between the transmission component and / or the conductive component and the electroplating solution.

[0026] In some embodiments, the electroplating tank is an integrated structure, a buffer cavity is provided between two adjacent tank cavities, and the transmission component and the conductive component are located in the area corresponding to the buffer cavity.

[0027] In some embodiments, a flexible conductive layer is disposed on the surface of the conductive roller so that the conductive roller can contact the electroplating opening on the battery cell.

[0028] In some embodiments, the distance between the edging structures on the two sides of the battery cell extending along its conveying direction is N, the width of the contact area between the conductive roller and the battery cell is M, M≤N; the width of the contact area between the transmission roller and the battery cell is L, L≤N.

[0029] In some embodiments, the length of the slot cavity along the first direction is S1, the length of the battery cell along the first direction is S2, and the value range of S1 is

[0030] In some embodiments, a shielding member for shielding an edge of the anode member is disposed on a side of the anode member facing the conveying path, and the shielding member at least shields two side edges of the anode member extending along the first direction.

[0031] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0032] In an embodiment of the utility model, the downstream of each slot cavity includes a first support member, a drying assembly and a second support member which are arranged in sequence at intervals to support the battery cells from the upstream and downstream of the drying assembly respectively, thereby reducing the risk of displacement or breakage of the battery cells during the drying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] AttachedFigure 1 It is a schematic diagram of the structure of the electroplating equipment in Example 1;

[0034] Attached Figure 2 is a schematic structural diagram of the conductive roller in Example 1;

[0035] Attached Figure 3 Schematic diagram of the positional relationship between the anode member and the shielding member in Example 1;

[0036] Attached Figure 4 It is a structural schematic diagram of the electroplating equipment in Example 2;

[0037] Attached Figure 5 This is a schematic diagram of the first structure of the electroplating equipment in Example 3;

[0038] Attached Figure 6 is a schematic diagram of a second structure of the electroplating equipment in Example 3;

[0039] Attached Figure 7 It is a schematic diagram of the structure of the electroplating equipment in Example 4;

[0040] Attached Figure 8 It is a structural schematic diagram of the electroplating equipment in Example 5;

[0041] Attached Fig. 9 It is a schematic diagram of the structure of the electroplating equipment in Example 6;

[0042] Attached Fig.10 is a schematic structural diagram of the electroplating equipment in Example 7;

[0043] Attached Fig.11 is a schematic diagram of the structure of the electroplating tank in Example 7;

[0044] Attached Fig.12 This is a schematic diagram of the first structure of the electroplating equipment in Example 8;

[0045] Attached Fig.13 is a second structural schematic diagram of the electroplating equipment in Example 8;

[0046] The meanings of the reference numerals are as follows:

[0047] Electroplating tank 11, tank cavity 111, buffer cavity 112, reflux cavity 113, first liquid passage hole 11a, second liquid passage hole 11b, liquid outlet hole 11c, anode member 12, transmission roller 131, pressure roller 132, pressure block 132T, conductive roller 133, roller shaft 1331, roller 1332, roller body 1332a, first flexible conductive layer 1332b, negative pressure adsorption mechanism 14, shielding member 15, air drying mechanism 16, upper nozzle 161, lower nozzle 162, battery cell 20, edge wrapping structure 201. DETAILED DESCRIPTION

[0048] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0049] An embodiment of the utility model provides an electroplating device, including an electroplating tank 11, the electroplating tank 11 includes a plurality of slot cavities 111 arranged in sequence along a first direction, and each slot cavity 111 has an electroplating station. The electroplating station is located near the notch of the slot cavity 111, and the electroplating station can be located in the slot cavity 111 or directly above the notch. The electroplating station for electroplating the lower surface of the battery cell 20 is generally located in the slot cavity 111, and the electroplating station for electroplating the upper surface of the battery cell 20 is generally located directly above the notch. During electroplating, a plating solution is provided in the electroplating tank 11. An anode member 12 is provided adjacent to the electroplating station to form an electric field between the battery cell 20 located on the electroplating station during electroplating. The anode member 12 can be located in the slot cavity 111 or directly above the notch. The anode member 12 that cooperates with the lower surface of the battery cell 20 is generally located in the slot cavity 111, and the anode member 12 that cooperates with the upper surface of the battery cell 20 is generally located directly above the slot. The electroplating equipment also includes a conveying mechanism that can convey the battery cell 20 through multiple electroplating stations in sequence. The downstream of each slot cavity 111 includes a first support member, a drying component, and a second support member that are arranged in sequence and spaced apart to support the battery cell 20 from the upstream and downstream of the drying component, respectively, to reduce the risk of displacement or breakage of the battery cell 20 during the drying process.

[0050] Specifically, the conveying mechanism includes a transmission component and a conductive component, the first support member can be a transmission component or a conductive component, and the second support member can be a transmission component or a conductive component. The following situations are included: (1) the transmission component is formed as the first support member and the second support member; (2) the conductive component is formed as the first support member and the second support member; (3) the transmission component is formed as the first support member, and the conductive component is formed as the second support member; (4) the transmission component is formed as the second support member, and the conductive component is formed as the first support member.

[0051] Specifically, the transmission assembly includes a transmission roller 131 for transmitting the battery cell 20, and the conductive assembly includes a conductive roller 133 for conducting electricity to the battery cell 20. The first support member can be the transmission roller 131 or the conductive roller 133, and the second support member can be the transmission roller 131 or the conductive roller 133.

[0052] Specifically, the conveying mechanism has a conveying path. The conveying path refers to the path through which the battery cell 20 is conveyed. When the conveying path passes above the slot cavity 111, the height of the top of the transmission roller 131 is higher than the slot height of the slot cavity 111; when the conveying path passes through the slot cavity 111, an avoidance hole is required on the slot cavity 111 to allow the battery cell 20 to pass through, and the avoidance hole can be used as an overflow hole.

[0053] Preferably, a flexible conductive layer is provided on the surface of the conductive roller 133 so that the conductive roller 133 can contact the electroplating opening on the battery cell 20, thereby improving the electrical contact performance between the surface of the conductive roller 133 and the electroplating opening. The flexible conductive layer can be conductive silicone or conductive sponge material.

[0054] Preferably, the distance between the edge structures 201 on the two sides extending along the conveying direction of the battery cell 20 is N, and the width of the contact area between the conductive roller 133 and the battery cell 20 is M, M≤N, so that the conductive roller 133 can be prevented from scratching the edge structures 201 on the two sides extending along the conveying direction of the battery cell 20. The edge structure 201 is a material layer coated on the edge of the battery cell 20 to prevent the side of the battery cell 20 from being electroplated during the electroplating process.

[0055] Preferably, the distance between the edging structures 201 on the two side edges of the battery cell 20 extending along its conveying direction is N, and the width of the contact area between the transmission roller 131 and the battery cell 20 is L, L≤N, which can prevent the transmission roller 131 from scratching the edging structures 201 on the two side edges of the battery cell 20 extending along its conveying direction.

[0056] Specifically, the transmission assembly also includes a pressing structure that cooperates with the transmission roller 131, so that the battery cell 20 keeps in contact with the transmission roller 131 when the transmission roller 131 transmits the battery cell 20, reducing the risk of slipping and shifting of the battery cell 20 during the transmission process. The transmission roller 131 and the pressing structure that cooperates therewith are jointly formed as a first support member or a second support member, reducing the risk of shifting or breaking of the battery cell 20 during the drying process.

[0057] Specifically, the conductive assembly also includes a sheeting structure that cooperates with the conductive roller 133, so that the battery cell 20 keeps in contact with the conductive roller 133 when the conductive roller 133 conducts electricity to the battery cell 20, reducing the risk of local short circuit of the battery cell 20. If the conductive roller 133 is also used for the transmission of the battery cell 20, the sheeting structure cooperates with the conductive roller 133 to reduce the risk of slipping and shifting of the battery cell 20 during the transmission process. The conductive roller 133 and the sheeting structure that cooperates with it together form a first support member or a second support member, reducing the risk of displacement or breakage of the battery cell 20 during the drying process.

[0058] Specifically, the drying component includes a negative pressure adsorption mechanism 14, which can absorb liquid on the surface of the battery cell 20 to dry the battery cell 20. Alternatively, the drying component includes an air drying mechanism 16, which can air dry the liquid on the surface of the battery cell 20 to dry the battery cell 20. Alternatively, the drying component includes both the negative pressure adsorption mechanism 14 and the air drying mechanism 16.

[0059] Preferably, the driving rollers 131 are all arranged outside the groove cavity 111. During electroplating, the battery cell 20 spans over the groove cavity 111 along the first direction. The length of the groove cavity 111 along the first direction is defined as S1, and the length of the battery cell 20 along the first direction is defined as S2. The value range of S1 is Preferably It is convenient for the battery cell 20 to extend out of the slot cavity 111 and to make conductive contact with the conductive roller 133 disposed outside the slot cavity 111, and the slot cavity 111 can perform synchronous electroplating on a larger area on the battery cell 20, taking into account both the conductive contact effect and the electroplating efficiency of the battery cell 20. When the electroplating tank 11 includes a plurality of slot cavities 111 disposed in parallel, the plurality of parallel slot cavities 111 convey the battery cell 20 through the same conveying mechanism, each slot cavity 111 corresponds to a conveying path, and the transmission roller 131 spans across the plurality of conveying paths. The transmission roller 131 has a large span, so that the middle part thereof will sag, thereby affecting the uniform electroplating of the battery cell 20 and the conductive contact between the battery cell 20 and the conductive roller 133. The longer the length of the slot cavity 111 along the first direction, the greater the impact. Based on this, it is also necessary to limit the length of the slot cavity 111 along the first direction.

[0060] Specifically, a shielding member 15 for shielding the edge of the anode member 12 is provided on one side of the anode member 12 facing the conveying path, and the shielding member 15 at least shields two side edges extending along the first direction of the anode member 12. That is, during electroplating, the shielding member 15 can shield between the anode member 12 and the battery cell 20, shielding the edge of the anode member 12, so as to block and weaken the electric field generated by the edge of the anode member 12, and improve the uniformity of electroplating of the battery cell 20.

[0061] Example 1

[0062] like Figure 1As shown, the electroplating equipment includes an electroplating tank 11, an anode member 12 and a conveying mechanism. The electroplating tank 11 includes a plurality of slots 111 arranged in sequence along a first direction, and each slot 111 has an electroplating station. The first direction is the conveying direction of the battery cell 20. The anode member 12 is arranged in the slot 111, and the anode member 12 is fixedly connected to the bottom wall or the side wall of the slot 111. The conveying mechanism includes a transmission assembly, which is located outside the slot 111 and is not arranged in the slot 111. The transmission assembly is arranged upstream and downstream of each slot 111. During electroplating, the transmission components located upstream and downstream of the tank cavity 111 serve as two fulcrums to support the battery cell 20. An electroplating station is formed between the anode component 12 and the battery cell 20. The anode component 12 is immersed in the electroplating solution, and the lower surface of the battery cell 20 is immersed in the electroplating solution. The anode component 12 is connected to the positive electrode of the electroplating power supply, and the lower surface of the battery cell 20 is connected to the negative electrode of the electroplating power supply, so that an electric field is formed between the anode component 12 and the battery cell 20 to electroplate metal grid lines on the battery cell 20.

[0063] The downstream of each slot cavity 111 includes a transmission component, a drying component and a conductive component which are arranged in sequence. The transmission component and the conductive component can support the battery cell 20 from the upstream and downstream of the drying component respectively, reducing the risk of displacement or breakage of the battery cell 20 during the drying process. That is, the transmission component is formed as a first support member, and the conductive component is formed as a second support member. The transmission component includes a transmission roller 131 for conveying the battery cell 20, and the friction force generated by the rotation of the transmission roller 131 drives the battery cell 20 to move. Among them, the drying component is a negative pressure adsorption mechanism 14, which can absorb the liquid on the surface of the battery cell to dry the battery cell.

[0064] The conductive assembly includes a conductive roller 133 for conducting electricity to the battery cell 20. During electroplating, the lower surface of the battery cell 20 contacts the conductive roller 133, and the conductive roller 133 is connected to the negative electrode of the electroplating power source, so that the lower surface of the battery cell 20 is connected to the negative electrode of the electroplating power source through the conductive roller 133. Figure 2As shown, the conductive roller 133 includes a roller shaft 1331 and a roller 1332 sleeved on the roller shaft 1331, and the roller 1332 includes a roller body 1332a and a first flexible conductive layer 1332b coated on the surface of the roller body 1332a. When the conductive roller 133 contacts the battery cell 20 and supplies power to the battery cell 20, the first flexible conductive layer 1332b is deformed, so that the first flexible conductive layer 1332b can be squeezed into the electroplating opening on the battery cell 20, and the first flexible conductive layer 1332b can contact the seed layer at the bottom of the electroplating opening, thereby improving the electrical contact performance between the surface of the conductive roller 133 and the electroplating opening. The first flexible conductive layer 1332b can be a conductive silicone or a conductive sponge material. The distance between the edging structures 201 on the two sides of the battery cell 20 extending along its conveying direction is N, and the length of the roller 1332 is M, M≤N, which can prevent the conductive roller 133 from scratching the edging structures 201 on the two sides of the battery cell 20 extending along its conveying direction.

[0065] A shielding member 15 is provided on the side of the anode member 12 facing the battery sheet 20 or the side of the anode member 12 facing the conveying path to shield the edge of the anode member 12 so as to block and weaken the electric field generated by the edge of the anode member 12. Figure 3 As shown, the two shielding members 15 respectively shield the two side edges of the anode member 12 extending along the conveying direction. The two side edges of the anode member 12 have a greater impact on the electroplating uniformity of the battery cell 20, so the shielding members 15 are used to shield them first. Of course, in other embodiments, the shielding members 15 can shield other side edges or all side edges of the anode member 12.

[0066] Preferably, a recovery chamber (not shown) is further provided outside the tank cavity 111 to recover the electroplating solution overflowing from the tank cavity 111 .

[0067] Example 2

[0068] like Figure 4 As shown, different from the solution in Example 1, part of the transmission assembly is located in the slot cavity 111. If the length of the slot cavity 111 along the first direction is long, that is, the span of the part of the battery cell 20 located in the slot cavity 111 is long, it will cause the part of the battery cell 20 located in the slot cavity 111 to sag, affecting the effect of electroplating.

[0069] Example 3

[0070] like Figure 5-Figure 6As shown, an improvement is made on the basis of Example 1. During electroplating, a plating solution is set in the tank cavity 111, and the plating solution contacts the lower surface of the battery cell 20, which will cause the battery cell 20 to float, thereby causing the battery cell 20 to lose contact with the transmission roller 131 or the conductive roller 133, affecting the transmission or conduction of the battery cell 20. The transmission component also includes a pressing structure that cooperates with the transmission roller 131, so that the battery cell 20 keeps contacting the transmission roller 131 when the transmission roller 131 transmits the battery cell 20, which can reduce the risk of the battery cell 20 losing contact with the transmission roller 131. The conductive component also includes a pressing structure that cooperates with the conductive roller 133, so that the battery cell 20 keeps contacting the conductive roller 133 when the conductive roller 133 conducts electricity for the battery cell 20, which can reduce the risk of the battery cell 20 losing contact with the conductive roller 133.

[0071] Specifically, Figure 5 As shown, the sheet pressing structure is a pressing roller 132, and the pressing roller 132 and the driving roller 131 are arranged opposite to each other at intervals in the upper and lower parts. The gap between the pressing roller 132 and the driving roller 131 is adapted to the thickness of the battery cell 20, so that the battery cell 20 can pass through it. The surface of the driving roller 131 is coated with an elastic material layer, and the elastic material layer can be in close contact with the surface of the battery cell 20 in contact with it, thereby being able to block the plating liquid from flowing through the contact between the elastic material layer and the battery cell 20. The surface of the pressing roller 132 is also coated with an elastic material layer, which is used to block the plating liquid from flowing through the contact between the pressing roller 132 and the battery cell 20. The material of the elastic material layer can be plastic or silicone. Of course, if the surface of the driving roller 131 is not provided with an elastic material layer, the driving roller 131 itself can also play a certain role in blocking liquid; if the surface of the pressing roller 132 is not provided with an elastic material layer, the pressing roller 132 itself can also play a certain role in blocking liquid.

[0072] It should be noted that when the surface of the driving roller 131 is coated with an elastic material layer and the surface of the pressure roller 132 is coated with an elastic material layer, the pressure roller 132 and the driving roller 131 can contact each other, and the battery cell 20 can squeeze the elastic material layers of the pressure roller 132 and the driving roller 131 from the contact point between the two, and then pass through the two.

[0073] Specifically, Figure 6 As shown, the pressing sheet structure is a pressing block 132T. Preferably, one end of the pressing block 132T facing the transmission roller 131 is coated with an elastic material layer. The material of the elastic material layer can be plastic or silica gel.

[0074] Example 4

[0075] like Figure 7As shown, different from the solution in Example 3, multiple drying components are arranged downstream of each slot cavity 111. For example, there are two drying components. The downstream of each slot cavity 111 includes a transmission component, a drying component, a conductive component, a drying component and a transmission component arranged in sequence. The transmission component and the conductive component can support the battery cell 20 from the upstream and downstream of the drying component, respectively, reducing the risk of displacement or breakage of the battery cell 20 during the drying process. When the conductive component cooperates with the transmission component upstream of it to support the drying component upstream of it, the conductive component forms a second support member; when the conductive component cooperates with the transmission component downstream of it to support the drying component downstream of it, the conductive component forms a first support member.

[0076] Example 5

[0077] like Figure 8 As shown, different from the solution in Example 3, the downstream of each slot cavity 111 includes a plurality of transmission components arranged in sequence, and the plurality of transmission components constitute a group, and a conductive component is arranged downstream of the group of transmission components. The drying component is at least arranged between two transmission components in the group of transmission components. The transmission component upstream of the drying component is formed as a first support member, and the transmission component downstream of the drying component is formed as a second support member. There is at least one transmission component between the drying component and the conductive component downstream thereof, which can reduce the vibration of the contact point between the conductive component downstream and the battery cell 20, thereby improving the electrical contact performance between the surface of the conductive roller 133 and the battery cell 20.

[0078] Example 6

[0079] like Fig. 9 As shown, different from the solution in Example 3, multiple drying components are arranged between the transmission component and the conductive component, for example, two drying components are arranged relatively on the upper and lower sides of the conveying path, so as to be able to dry the upper surface and the lower surface of the battery cell 20 respectively. For example, the drying component arranged above the conveying path is the air drying mechanism 16, and the drying component arranged below the conveying path is the negative pressure adsorption mechanism 14.

[0080] Example 7

[0081] like Figure 10-11As shown, different from the above-mentioned embodiment, the electroplating tank 11 is an integrated structure, and the electroplating tank 11 includes a tank cavity 111 and a buffer cavity 112. The tank cavities 111 are arranged in sequence along the first direction. A buffer cavity 112 is arranged between two adjacent tank cavities 111, and the transmission component and the conductive component are located in the area corresponding to the buffer cavity 112. The transmission roller 131 can be located in the buffer cavity 112, or the upper part of the transmission roller 131 extends out of the buffer cavity 112; the conductive roller 133 can be located in the buffer cavity 112, or the upper part of the conductive roller 133 extends out of the buffer cavity 112; the pressure roller 132 is generally located above the buffer cavity 112, or the lower part of the pressure roller 132 extends into the buffer cavity 112. Of course, the arrangement positions of the transmission roller 131, the conductive roller 133 and the pressure roller 132 are not limited to the above positions. Preferably, the buffer cavity 112 is respectively arranged upstream and downstream of the tank cavity 111 to recover the electroplating liquid overflowing from the upstream and downstream sides of the tank cavity 111.

[0082] Specifically, the electroplating tank 11 is a double-layer structure, with the tank cavity 111 and the buffer cavity 112 located at the top, and a reflux cavity 113 is further provided below the tank cavity 111 and the buffer cavity 112. The tank cavity 111 and the buffer cavity 112 are in communication, and the buffer cavity 112 and the reflux cavity 113 are in communication. Specifically, a first liquid-passing hole 11a is provided on the side wall shared by the tank cavity 111 and the buffer cavity 112, and a second liquid-passing hole 11b in communication with the reflux cavity 113 is provided on the bottom wall of the buffer cavity 112. The electroplating liquid in the tank cavity 111 flows into the buffer cavity 112 from the first liquid-passing hole 11a, and the electroplating liquid in the buffer cavity 112 flows into the reflux cavity 113 from the second liquid-passing hole 11b. The reflux cavity 113 is further provided with a liquid outlet 11c, and the electroplating liquid can flow back to the tank cavity 111 from the liquid outlet 11c through an external pipeline, and a pump is provided on the external pipeline. Preferably, a lower nozzle 162 is further provided in the tank cavity 111 , and the liquid outlet 11 c is connected to the lower nozzle 162 through an external pipeline, so that the refluxed electroplating liquid is evenly sprayed into the tank cavity 111 , which can improve the uniformity of electroplating of the battery cell 20 .

[0083] Example 8

[0084] like Figure 12-13 As shown, unlike the aforementioned embodiment, the electroplating equipment can be used for the synchronous electroplating of double-sided cells, that is, the upper and lower surfaces of the cell 20 can be electroplated at the same time. Each tank cavity 111 has two electroplating stations arranged opposite to each other, one electroplating station is located in the tank cavity 111, and is used to electroplate the lower surface of the cell 20, and the other electroplating station is located above the tank cavity 111, and is used to electroplate the upper surface of the cell 20. The anode parts 12 are arranged above and below the conveying path. In other words, the anode parts 12 are arranged in two groups opposite to each other, one group of anode parts 12 is arranged in the tank cavity 111, and the other group of anode parts 12 is arranged above the tank cavity 111, and the cell 20 is conveyed between the two groups of anode parts 12.

[0085] Specifically, an upper nozzle 161 is also provided on the anode member 12 above the tank cavity 111; during electroplating, the upper nozzle 161 sprays the electroplating liquid below it, so that the electroplating liquid can be maintained between the anode member 12 above the tank cavity 111 and the upper surface of the battery cell 20, so as to form an electric field. In order to stably maintain the electroplating liquid between the anode member 12 above the tank cavity 111 and the upper surface of the battery cell 20, two pressing rollers 132 are arranged between the anode member 12 and the battery cell 20 and spaced along the first direction. Both pressing rollers 132 are formed into a liquid-blocking structure, and an upper liquid-blocking area is formed between the two pressing rollers 132. Preferably, the height of the top of the pressing roller 132 is higher than the height of the lower surface of the anode member 12 above the tank cavity 111, so that the lower surface of the anode member 12 can be wetted by the electroplating liquid in the upper liquid-blocking area. More preferably, the height of the top of the pressing roller 132 is higher than the height of the upper surface of the anode member 12 above the tank cavity 111, so that the anode member 12 can be immersed in the electroplating liquid in the upper liquid-blocking area. Similarly, in order to stably maintain the electroplating liquid between the anode member 12 in the tank cavity 111 and the lower surface of the battery cell 20, two transmission rollers 131 are arranged between the anode member 12 and the battery cell 20 and spaced along the first direction. The two transmission rollers 131 are both formed into a liquid-blocking structure, and a lower liquid-blocking area is formed between the two transmission rollers 131. The two pressure rollers 132 and the two transmission rollers 131 are arranged one by one, and a pressure roller 132 and a transmission roller 131 located upstream form a group of transmission components, and a pressure roller 132 and a transmission roller 131 located downstream form another group of transmission components. When the transmission component does not convey the battery cell 20, a liquid-blocking area is formed between the two groups of transmission components. When the battery cell 20 is conveyed, the liquid-blocking area is divided into an upper liquid-blocking area and a lower liquid-blocking area by the battery cell 20. Preferably, the two groups of transmission components are respectively arranged upstream and downstream of the tank cavity 111 and are located outside the tank cavity 111.

[0086] Specifically, the downstream of each slot cavity 111 includes a transmission component, a drying component and a conductive component that are arranged in sequence and at intervals. The transmission component and the conductive component can support the battery cell 20 from the upstream and downstream of the drying component, respectively, reducing the risk of displacement or breakage of the battery cell 20 during the drying process. That is, the transmission component is formed as a first support member, and the conductive component is formed as a second support member. More specifically, the drying components are two relatively arranged above and below the conveying path to dry the upper and lower surfaces of the battery cell 20 respectively, and the conductive components are also two relatively arranged above and below the conveying path to conduct electricity on the upper and lower surfaces of the battery cell 20 respectively. Preferably, the drying component is a negative pressure adsorption mechanism 14, which can absorb the liquid on the surface of the battery cell to dry the battery cell.

[0087] It should be noted that the components and battery cells in the drawings are not drawn according to the actual sizes, and the components and the battery cells are not drawn after being scaled at the same ratio, and this should not be used to limit the protection scope of the utility model.

[0088] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An electroplating device, characterized in that: include: An electroplating tank, comprising a plurality of tank cavities arranged in sequence and at intervals along a first direction, each of the tank cavities having an electroplating station; an anode member, disposed adjacent to the electroplating station, so as to form an electric field between the anode member and the battery sheet located on the electroplating station during electroplating; A conveying mechanism, used for conveying the battery cells so that the battery cells can pass through the plurality of electroplating stations in sequence; Wherein, the downstream of each of the slot cavities comprises a first support member, a drying assembly and a second support member which are arranged in sequence and spaced apart from each other, so that during the drying process, the first support member and the second support member can support the battery cells from the upstream and downstream of the drying assembly respectively.

2. The electroplating equipment according to claim 1, characterized in that: The conveying mechanism includes a transmission assembly and a conductive assembly, wherein the transmission assembly includes a transmission roller for conveying the battery sheet, and the conductive assembly includes a conductive roller for conducting electricity to the battery sheet; The transmission assembly is formed into a first support member and a second support member; Alternatively, the conductive component is formed as a first support member and a second support member; Alternatively, the transmission component is formed as a first support member, and the conductive component is formed as a second support member; Alternatively, the transmission component is formed as a second support member, and the conductive component is formed as a first support member.

3. The electroplating equipment according to claim 2, characterized in that: When the transmission component is formed as a first support member and a second support member, the conductive component is arranged downstream of the second support member.

4. The electroplating equipment according to claim 2, characterized in that: At least part of the transmission roller is located outside the groove cavity, and the transmission roller located outside the groove cavity is formed into a liquid-blocking structure to block the electroplating liquid from flowing through the contact point between the transmission roller and the battery cell.

5. The electroplating equipment according to claim 2, characterized in that: Two groups of transmission components are arranged oppositely upstream and downstream of each groove cavity, and a liquid-blocking area is formed between the two groups of transmission components.

6. The electroplating equipment according to claim 2, characterized in that: The transmission component also includes a pressing sheet structure that cooperates with the transmission roller to keep the battery cell in contact with the transmission roller when the transmission roller conveys the battery cell; and / or, the conductive component also includes a pressing sheet structure that cooperates with the conductive roller to keep the battery cell in contact with the conductive roller when the conductive roller conducts electricity to the battery cell.

7. The electroplating equipment according to any one of claims 2 to 6, characterized in that: The drying component includes a negative pressure adsorption mechanism, which can absorb liquid on the surface of the battery cell to dry the battery cell; and / or the drying component includes an air drying mechanism, which can air dry the liquid on the surface of the battery cell to dry the battery cell.

8. The electroplating equipment according to any one of claims 2 to 6, characterized in that: The transmission component and the conductive component are located between two adjacent slot cavities to reduce the contact between the transmission component and / or the conductive component and the electroplating solution; When the electroplating tank is an integrated structure, a buffer cavity is provided between two adjacent tank cavities, and the transmission component and the conductive component are located in the area corresponding to the buffer cavity.

9. The electroplating equipment according to claim 2, characterized in that: The surface of the conductive roller is provided with a flexible conductive layer so that the conductive roller can contact the electroplating opening on the battery sheet.

10. The electroplating equipment according to claim 2, characterized in that: The distance between the edging structures on the two sides of the battery cell extending along the conveying direction is N, the width of the contact area between the conductive roller and the battery cell is M, M≤N; the width of the contact area between the transmission roller and the battery cell is L, L≤N.

11. The electroplating equipment according to claim 1, characterized in that: The length of the slot cavity along the first direction is S1, the length of the battery cell along the first direction is S2, and the value range of S1 is 12. The electroplating equipment according to claim 1, characterized in that: A shielding member for shielding the edge of the anode member is arranged on one side of the anode member facing the conveying path, and the shielding member at least shields two side edges of the anode member extending along the first direction.

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