CN220746133U

CN220746133U - Electroplating equipment

Info

Publication number: CN220746133U
Application number: CN202322420245.7U
Authority: CN
Inventors: 黄勇; 请求不公布姓名
Original assignee: Suzhou Taiyangjing New Energy Co ltd
Current assignee: Suzhou Taiyangjing New Energy Co ltd
Priority date: 2023-09-06
Filing date: 2023-09-06
Publication date: 2024-04-09
Anticipated expiration: 2033-09-06

Abstract

The utility model discloses electroplating equipment which comprises a first electroplating tank, a second electroplating tank and a conveying mechanism, wherein an anode part capable of facing a first surface of a battery piece in an electroplating state is arranged in the first electroplating tank, an anode part capable of facing the first surface of the battery piece in the electroplating state and an anode part facing a second surface of the battery piece are arranged in the second electroplating tank, and the conveying mechanism can transfer the battery piece from the first electroplating tank to the second electroplating tank. Through electroplating the plated area on the first face of the battery piece in advance in the first electroplating bath, then electroplate the plated area on the both sides of the battery piece simultaneously in the second electroplating bath, the adhesion effect of metal ions on the plated area is improved, the probability that the electric field lines on the first face of the battery piece are wound on the second face of the battery piece is reduced, and the risk that the plated area on the first face of the battery piece is broken or the grid lines are missing is reduced.

Description

Electroplating equipment

Technical Field

The utility model relates to the field of battery piece electroplating, in particular to electroplating equipment.

Background

According to the gesture of the battery piece during electroplating, the process of electroplating the metal grid line of the battery piece is divided into horizontal electroplating and vertical electroplating. Chinese patent CN217733298U discloses a horizontal electroplating device for a battery, which introduces the structure and principle of the horizontal electroplating device for double-sided electroplating of a battery, wherein during the electroplating process, both sides of the battery need to be immersed in the electroplating solution. Chinese patent CN116103732a discloses a vertical plating apparatus, device and method, which introduces the structure and principle of a vertical plating apparatus for double-sided plating of a battery, wherein during the plating process, both sides of the battery need to be immersed in a plating solution. Both sides of the battery piece, whether horizontal plating or vertical plating, need to be immersed in the plating solution.

When both sides of the battery piece are immersed in the electroplating solution, the two sides of the battery piece are simultaneously electroplated, so that the situation of local power line disorder can occur, the winding plating is caused, and the grid breakage or grid line missing occurs on the plated area of the battery piece. In particular, the plated areas on the two sides of the battery piece are different, and the problem that the grid breakage or the grid line missing occurs more easily on the side with larger plated area on the battery piece.

Disclosure of Invention

The utility model aims to provide electroplating equipment for solving one of the technical problems mentioned in the background art.

In order to achieve the above object, the technical solution provided in the embodiments of the present utility model is specifically as follows.

The embodiment of the utility model provides electroplating equipment, which comprises a first electroplating tank, a second electroplating tank and a conveying mechanism, wherein an anode part capable of facing a first surface of a battery piece in an electroplating state is arranged in the first electroplating tank, an anode part capable of facing the first surface of the battery piece in the electroplating state and an anode part facing a second surface of the battery piece are arranged in the second electroplating tank, and the conveying mechanism can transfer the battery piece from the first electroplating tank to the second electroplating tank;

in the electroplating working state, when the battery piece is positioned in the first electroplating bath, the anode piece positioned in the first electroplating bath is electrically connected with the positive electrode of the power supply, and the first surface of the battery piece is electrically connected with the negative electrode of the power supply; when the battery piece is positioned in the second electroplating bath, the anode piece is positioned in the second electroplating bath and is electrically connected with the positive electrode of the power supply, the first surface of the battery piece is electrically connected with the negative electrode of the power supply, and the second surface of the battery piece is electrically connected with the negative electrode of the power supply; wherein the plated area on the first face of the battery piece is larger than the plated area on the second face of the battery piece.

In some embodiments, the electroplating apparatus further comprises a second liquid separation tank arranged between the first electroplating tank and the second electroplating tank, wherein a first overflow hole is formed in the side wall, close to the second liquid separation tank, of the first electroplating tank, the first electroplating tank is communicated with the second liquid separation tank through the first overflow hole, a second overflow hole is formed in the side wall, close to the second liquid separation tank, of the second electroplating tank, and the second electroplating tank is communicated with the second liquid separation tank through the second overflow hole;

the conveying mechanism is a roller conveying mechanism, and the roller conveying mechanism can enable the battery piece to sequentially pass through the first overflow hole and the second overflow hole so as to horizontally convey the battery piece from the first electroplating bath to the second electroplating bath;

in the first electroplating tank, the anode part is horizontally arranged below the conveying path of the battery piece, and in the second electroplating tank, the anode part is horizontally arranged below and above the conveying path of the battery piece.

In some embodiments, the roller conveying mechanism includes a plurality of conveying rollers, the conveying rollers are sequentially arranged at intervals, the rotation axes of the plurality of conveying rollers are perpendicular to the conveying direction of the battery piece, and the rotation axes of the plurality of conveying rollers are horizontally arranged; and a pressing roller matched with the conveying roller is arranged above part of the conveying roller, and the pressing roller is used for mortgage the battery piece on the conveying roller, so that enough friction force can be provided to drive the battery piece to move in the rotating process of the conveying roller.

In some embodiments, the conveying roller comprises a roller shaft and a roller sleeve fixedly sleeved outside the roller shaft, and a spiral structure is arranged on the roller sleeve.

In some embodiments, a first liquid separation tank is further arranged at the upstream of the first electroplating tank, a first overflow hole is formed in the side wall, close to the first liquid separation tank, of the first electroplating tank, and the first electroplating tank is communicated with the first liquid separation tank through the first overflow hole;

the downstream of the second electroplating bath is also provided with a third liquid separating groove, a second overflow hole is formed in the side wall, close to the third liquid separating groove, of the second electroplating bath, and the second electroplating bath is communicated with the third liquid separating groove through the second overflow hole.

In some embodiments, the electroplating apparatus further comprises at least one of a first liquid reflow device, a second liquid reflow device, a third liquid reflow device, and a fourth liquid reflow device;

the first liquid reflux device is respectively communicated with the first electroplating bath and the first liquid separating tank so as to pump the electroplating liquid in the first liquid separating tank into the first electroplating bath;

the second liquid reflux device is respectively communicated with the first electroplating bath and the second liquid isolation groove so as to pump the electroplating liquid in the second liquid isolation groove into the first electroplating bath;

the third liquid reflux device is respectively communicated with the second electroplating bath and the second liquid separating tank so as to pump the electroplating liquid in the second liquid separating tank into the second electroplating bath;

the fourth liquid reflux device is respectively communicated with the second electroplating bath and the third liquid separating tank so as to pump the electroplating liquid in the third liquid separating tank into the second electroplating bath;

the first liquid reflux device, the second liquid reflux device, the third liquid reflux device and the fourth liquid reflux device all comprise a liquid pump and an infusion pipeline.

In some embodiments, the first liquid separating tank, the first electroplating tank, the second liquid separating tank, the second electroplating tank and the third liquid separating tank form an upper tank body, and a lower tank body communicated with the first liquid separating tank, the second liquid separating tank and the third liquid separating tank is arranged below the upper tank body.

In some embodiments, an auxiliary anode member capable of facing the second surface of the battery sheet in the plating state is disposed in the first plating tank; in the electroplating working state, when the battery piece is positioned in the first electroplating bath, the auxiliary anode piece is electrically connected with the positive electrode of the power supply, and the second surface of the battery piece is electrically connected with the negative electrode of the power supply.

In some embodiments, the conveying mechanism is a linear module or a chain conveying mechanism or a manipulator;

when the conveying mechanism is a linear module, a lifting driving mechanism is fixedly arranged at the driving end of the linear module, a clamp is fixedly arranged at the driving end of the lifting driving mechanism, and the clamp is used for clamping and fixing the battery piece and exposing a plated area on the battery piece;

when the conveying mechanism is a chain type conveying mechanism, a lifting driving mechanism is fixedly arranged on a conveying chain of the chain type conveying mechanism, a clamp is fixedly arranged on a driving end of the lifting driving mechanism, and the clamp is used for clamping and fixing the battery piece and exposing a plated area on the battery piece;

when the conveying mechanism is a manipulator, a lifting driving mechanism is fixedly arranged at the driving end of the manipulator, a clamp is fixedly arranged at the driving end of the lifting driving mechanism, and the clamp is used for clamping and fixing the battery piece and exposing a plated area on the battery piece.

Due to the application of the technical scheme, compared with the prior art, the embodiment of the utility model has the following advantages: firstly, plating a plated area on a first surface of a battery piece in a first plating bath in advance to form a metal grid line substrate, and then simultaneously plating plated areas on two surfaces of the battery piece in a second plating bath to form metal grid lines on the two surfaces of the battery piece; when double-sided electroplating is performed, the plated area on the first surface of the battery piece is provided with the metal grid line substrate, and electroplating is performed on the metal grid line substrate, so that the attachment effect of metal ions can be improved, the probability that the electric field lines acting on the first surface of the battery piece are wound on the second surface of the battery piece is reduced, and the risk that the plated area on the first surface of the battery piece is broken or grid lines are missing is reduced.

Drawings

FIG. 1 is a schematic view showing the structure of an electroplating apparatus in an electroless plating solution state in example 1 of the present utility model,

FIG. 2 is a schematic view showing the structure of the plating apparatus in the state of having a plating liquid according to embodiment 1 of the present utility model,

FIG. 3 is a schematic view showing the structure of an electroplating apparatus having a liquid replenishing device in embodiment 1 of the present utility model,

figure 4 is a schematic view showing the structure of a transfer roller in embodiment 1 of the present utility model,

FIG. 5 is a schematic circuit diagram of the first electroplating tank in the electroplating state in embodiment 1 of the present utility model,

FIG. 6 is a schematic circuit diagram of the second plating tank in the plating state according to embodiment 1 of the utility model,

FIG. 7 is a schematic view showing the structure of the plating apparatus in the electroless plating liquid state in example 2 of the present utility model,

FIG. 8 is a schematic view showing the structure of an electroplating apparatus provided with an auxiliary anode member in embodiment 2 of the present utility model,

FIG. 9 is a schematic circuit diagram of the first electroplating tank in the electroplating state according to embodiment 2 of the present utility model,

FIG. 10 is a schematic view showing a structure of a plating apparatus in which a jig is not immersed in a plating liquid in embodiment 3 of the utility model,

FIG. 11 is a schematic view showing the structure of a plating apparatus in which a jig is immersed in a plating solution in accordance with embodiment 3 of the present utility model;

FIG. 12 is a schematic view showing the arrangement of the anode member and the auxiliary anode member in embodiment 3 of the present utility model;

wherein the reference numerals have the following meanings:

the device comprises a first liquid separation tank 11, a first liquid passing hole 111, a first electroplating tank 12, a first overflow hole 121, a second liquid separation tank 13, a second liquid passing hole 131, a second electroplating tank 14, a second overflow hole 141, a third liquid separation tank 15, a third liquid passing hole 151, a lower tank 16, a liquid outlet hole 161, a conveying mechanism 2, a conveying roller 21, a roller shaft 211, a roller sleeve 212, a spiral structure 213, a compression roller 22, an anode part 3, an auxiliary anode part 31, a battery piece 4, a power supply 5, a liquid pump 61, an infusion pipeline 62, a clamp 7 and a lifting driving mechanism 8.

Detailed Description

Preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. Embodiment 1 is not just one embodiment, but a collection of embodiments having similar schemes or features, as are other embodiments.

Example 1

As shown in fig. 1 to 6, an electroplating apparatus includes a first electroplating tank 12, a second electroplating tank 14, and a conveying mechanism 2, wherein an anode member 3 capable of facing a first surface of a battery 4 in an electroplating state is disposed in the first electroplating tank 12, an anode member 3 capable of facing the first surface of the battery 4 in an electroplating state and an anode member 3 facing a second surface of the battery 4 are disposed in the second electroplating tank 14, and the conveying mechanism 2 is capable of transferring the battery 4 from the first electroplating tank 12 to the second electroplating tank 14.

In the electroplating working state, when the battery piece 4 is positioned in the first electroplating tank 12, the anode piece 3 positioned in the first electroplating tank 12 is electrically connected with the anode of the power supply 5, and the first surface of the battery piece 4 is electrically connected with the cathode of the power supply 5; when the battery piece 4 is positioned in the second electroplating bath 14, the anode piece 3 positioned in the second electroplating bath 14 is electrically connected with the positive electrode of the power supply 5, the first surface of the battery piece 4 is electrically connected with the negative electrode of the power supply 5, and the second surface of the battery piece 4 is electrically connected with the negative electrode of the power supply 5; wherein the plated area on the first side of the battery piece 4 is larger than the plated area on the second side of the battery piece 4.

The plane where the first surface of the battery piece 4 is defined as a first reference surface, and the plane where the second surface of the battery piece 4 is defined as a second reference surface. The first surface of the cell 4 is opposite to the anode element 3, which means that the orthographic projection of the anode element 3 on the first reference surface is at least partially overlapped with the first surface of the cell 4. The second surface of the cell 4 is opposite to the anode element 3, which means that the orthographic projection of the anode element 3 on the second reference surface at least partially coincides with the second surface of the cell 4.

In this embodiment, the first surface of the battery piece 4 and the second surface of the battery piece 4 are collectively referred to as the both surfaces of the battery piece 4. When the battery piece 4 is placed horizontally, the first face of the battery piece 4 refers to the lower face of the battery piece 4, and the second face of the battery piece 4 refers to the upper face of the battery piece 4. The lower surface of the battery piece 4 and the upper surface of the battery piece 4 are collectively referred to as the both sides of the battery piece 4.

Specifically, in the first plating tank 12, the anode members 3 are horizontally disposed below the conveyance path of the battery piece 4, and the anode members 3 may be plural, and the plural anode members 3 may be disposed in order along the conveyance direction of the battery piece 4. The conveying mechanism 2 firstly horizontally conveys the battery piece 4 into the first electroplating tank 12, so that at least the lower surface of the battery piece 4 is immersed in the electroplating solution, the anode piece 3 is communicated with the positive electrode of the power supply 5, and the lower surface of the battery piece 4 is communicated with the negative electrode of the power supply 5. When the battery piece 4 is horizontally conveyed in the first plating tank 12, the battery piece 4 can be moved to a position (plating position) where the lower surface of the battery piece 4 is opposite to the anode member 3, so that an electric field of sufficient strength is formed between the lower surface of the battery piece 4 and the anode member 3, and a plated area on the lower surface of the battery piece 4 is plated in advance to form a metal grid line substrate. When the anode members 3 are plural, the battery pieces 4 can be sequentially moved to a plurality of plating positions corresponding to the plurality of anode members 3. Of course, there are also cases where the lower surface of the battery piece 4 is facing the plurality of anode members 3 at the same time. The anode member 3 may be a planar mesh structure or a planar plate structure.

The anode members 3 in the second plating tank 14 are two groups, the first group of anode members 3 is located below the conveying path of the battery piece 4, the second group of anode members 3 is located above the conveying path of the battery piece 4, the first group of anode members 3 at least comprises one anode member 3, and the second group of anode members 3 at least comprises one anode member 3. At least part of the first set of anode members 3 and at least part of the second set of anode members 3 are arranged in a facing relationship, preferably the first set of anode members 3 and the second set of anode members 3 are arranged in a facing relationship one to one. The conveying mechanism 2 horizontally conveys the battery piece 4 from the first electroplating tank 12 into the second electroplating tank 14, so that the lower surface and the upper surface of the battery piece 4 are immersed in electroplating liquid, all anode pieces 3 are communicated with the positive electrode of the power supply 5, and the lower surface and the upper surface of the battery piece 4 are communicated with the negative electrode of the power supply 5. When the battery piece 4 is horizontally conveyed in the second electroplating tank 14, the battery piece 4 can move to a position (electroplating position) where the lower surface of the battery piece 4 is opposite to the first group of anode components 3, so that an electric field with enough strength is formed between the lower surface of the battery piece 4 and the anode components 3, and a plated area on the lower surface of the battery piece 4 is electroplated to form a metal grid line; meanwhile, the upper surface of the battery piece 4 is opposite to the second group of anode components 3, so that an electric field with enough intensity is formed between the upper surface of the battery piece 4 and the second group of anode components 3, and the plated area on the upper surface of the battery piece 4 is electroplated to form a metal grid line. That is, in the second plating tank 14, it is possible to perform plating simultaneously on the plated areas on the first and second sides of the battery sheet 4 to simultaneously form metal grid lines on both sides of the battery sheet 4.

After the plating is completed in the second plating tank 14, the conveyance mechanism 2 horizontally conveys the battery piece 4 out of the second plating tank 14.

In this embodiment, the plated area on the first surface (lower surface) of the battery piece 4 is larger than the plated area on the second surface (upper surface) of the battery piece 4, and if double-sided electroplating is directly performed, uneven electroplating and even broken grids or grid line missing problems occur on the first surface of the battery piece 4. Therefore, in this embodiment, the plated area on the first surface of the battery piece 4 is first plated in the first plating tank 12 to form the metal grid line substrate, and then the plated area on the two surfaces of the battery piece 4 is simultaneously plated in the second plating tank 14 to form the metal grid line on the two surfaces of the battery piece 4. When double-sided electroplating is performed, the plated area on the first surface of the battery piece 4 is already provided with a metal grid line substrate, and electroplating is performed on the metal grid line substrate, so that the attachment effect of metal ions can be improved, the probability that the electric field lines acting on the first surface of the battery piece 4 are wound on the second surface of the battery piece 4 is reduced, and the risk that the plated area on the first surface of the battery piece 4 is broken or grid lines are missing is reduced.

In some embodiments, as shown in fig. 1-3, the electroplating apparatus further includes a second liquid separation tank 13 disposed between the first electroplating tank 12 and the second electroplating tank 14, wherein a first overflow hole 121 is formed in a side wall of the first electroplating tank 12 adjacent to the second liquid separation tank 13, the first electroplating tank 12 is communicated with the second liquid separation tank 13 through the first overflow hole 121, a second overflow hole 141 is formed in a side wall of the second electroplating tank 14 adjacent to the second liquid separation tank 13, and the second electroplating tank 14 is communicated with the second liquid separation tank 13 through the second overflow hole 141. The conveying mechanism 2 is a roller conveying mechanism that is capable of passing the battery piece 4 through the first overflow hole 121 and the second overflow hole 141 in order to convey the battery piece 4 horizontally from the first plating tank 12 to the second plating tank 14. The adoption of the roller conveying mechanism facilitates the horizontal conveying of the battery piece 4.

The plating solution in the first plating tank 12 is continuously discharged through the first overflow hole 121, and a solution replenishing device (for example, a first solution reflux device or a second solution reflux device below) is used for replenishing the plating solution in the first plating tank 12 synchronously, so that the liquid level of the plating solution in the first plating tank 12 can be kept constant while the plating solution in the first plating tank 12 is in a flowing state; the plating solution in the first plating tank 12 is in a flowing state, so that the metal ions in the plating solution are distributed more uniformly, and the plating uniformity can be improved. Similarly, the plating solution in the second plating tank 14 is continuously discharged through the second overflow hole 141, and the solution replenishing device (for example, a third solution reflux device or a fourth solution reflux device below) synchronously supplements the plating solution in the second plating tank 14, so that the plating solution in the second plating tank 14 is in a flowing state and the liquid level of the plating solution in the second plating tank 14 can be kept constant; the plating solution in the second plating tank 14 is in a flowing state, so that the metal ions in the plating solution are distributed more uniformly, and the plating uniformity can be improved.

In addition, the first plating tank 12 and the second plating tank 14 are communicated through the first overflow hole 121 formed in the side wall of the first plating tank 12, which is close to the second liquid separation tank 13, and the second overflow hole 141 formed in the side wall of the second plating tank 14, which is close to the second liquid separation tank 13, so that the battery piece 4 sequentially passes through the first overflow hole 121 and the second overflow hole 141, and the battery piece 4 can be horizontally conveyed from the first plating tank 12 to the second plating tank 14.

Specifically, the first plating tank 12 is provided with first overflow holes 121 on both side walls that are disposed at intervals along the conveying direction of the battery piece 4, and the conveying mechanism 2 can send the battery piece 4 into the first plating tank 12 through the first overflow holes 121, and send the battery piece 4 out of the first plating tank 12 after the plating is completed. Similarly, the second plating tank 14 is provided with second overflow holes 141 on two sidewalls that are disposed along the conveying direction of the battery piece 4 at intervals, and the conveying mechanism 2 can send the battery piece 4 into the second plating tank 14 through the second overflow holes 141, and send the battery piece 4 out of the second plating tank 14 after the plating is completed.

In some embodiments, as shown in fig. 1 to 3, the roller conveying mechanism includes a plurality of conveying rollers 21, the conveying rollers 21 are sequentially arranged at intervals, rotation axes of the plurality of conveying rollers 21 are perpendicular to the conveying direction of the battery piece 4, and rotation axes of the plurality of conveying rollers 21 are horizontally arranged; a press roller 22 matched with the partial conveying roller 21 is arranged above the partial conveying roller 21, and the press roller 22 is used for pressing the battery piece 4 on the conveying roller 21 in a mortgage mode, so that enough friction force can be provided to drive the battery piece 4 to move in the rotating process of the conveying roller 21. The conveying rollers 21 are sequentially arranged at intervals, so that the electroplating solution can be contacted with the battery piece 4 through the intervals of the conveying rollers 21, and in addition, the anode piece 3 is opposite to the battery piece 4 through the intervals of the conveying rollers 21, so that an electric field is formed between the anode piece 3 and the battery piece 4 conveniently. The press roller 22 can mortgage the battery piece 4 on the conveying roller 21, so that enough friction force can be provided to drive the battery piece 4 to move in the process of rotating the conveying roller 21; in addition, the risk of the battery 4 slipping or floating in the plating solution due to buoyancy can be reduced.

In some embodiments, as shown in fig. 4, the conveying roller 21 includes a roller shaft 211 and a roller sleeve 212 fixedly sleeved outside the roller shaft 211, and a spiral structure 213 is disposed on the roller sleeve 212. The spiral structure 213 on the roller sleeve 212 can promote the friction force of the conveying roller 21 for driving the battery piece 4; in addition, the plating solution can contact the battery 4 through the gaps in the spiral structure 213, and the plating effect can be improved.

In some embodiments, as shown in fig. 1-3, a first liquid separating tank 11 is further disposed upstream of the first electroplating tank 12, a first overflow hole 121 is formed on a side wall of the first electroplating tank 12, which is close to the first liquid separating tank 11, and the first electroplating tank 12 is communicated with the first liquid separating tank 11 through the first overflow hole 121. The cell 4 can be horizontally transferred into the first plating tank 12 by providing the first overflow hole 121 on the side wall of the first plating tank 12 near the first separator tank 11. The downstream of the second electroplating tank 14 is also provided with a third liquid separating tank 15, a second overflow hole 141 is arranged on the side wall of the second electroplating tank 14 close to the third liquid separating tank 15, and the second electroplating tank 14 is communicated with the third liquid separating tank 15 through the second overflow hole 141. The battery piece 4 can be horizontally transferred out of the second plating tank 14 by providing a second overflow hole 141 on the side wall of the second plating tank 14 near the third separator 15.

In some embodiments, as shown in fig. 3, the electroplating apparatus further comprises at least one of a first liquid reflow device, a second liquid reflow device, a third liquid reflow device, and a fourth liquid reflow device. The first liquid reflux device is respectively communicated with the first electroplating tank 12 and the first liquid isolation tank 11 so as to pump the electroplating liquid in the first liquid isolation tank 11 into the first electroplating tank 12. The second liquid reflux device is respectively communicated with the first electroplating tank 12 and the second liquid isolation tank 13 so as to pump the electroplating liquid in the second liquid isolation tank 13 into the first electroplating tank 12. The third liquid reflux device is respectively communicated with the second electroplating tank 14 and the second liquid isolation tank 13 so as to pump the electroplating liquid in the second liquid isolation tank 13 into the second electroplating tank 14. The fourth liquid reflux device is respectively communicated with the second electroplating tank 14 and the third liquid isolation tank 15 so as to pump the electroplating liquid in the third liquid isolation tank 15 into the second electroplating tank 14. The first, second, third and fourth liquid reflux devices each include a liquid pump 61 and an infusion line 62.

In other embodiments, when the battery piece 4 is positioned in the first plating tank 12, the first surface of the battery piece 4 is not in contact with the plating solution, i.e., the level of the plating solution in the first plating tank 12 is lower than the level of the first surface of the battery piece 4. The battery 4 is supported and transferred in the first plating tank 12 by the transfer roller 21, the transfer roller 21 is partially immersed in the plating liquid, and the transfer roller 21 can transfer the plating liquid wet on itself onto the battery 4 by rotating itself, that is, wet the first surface of the battery 4 by means of the liquid so that the plated area on the first surface of the battery 4 can be plated. The first surface of the battery piece 4 is not contacted with the electroplating solution, so that the battery piece 4 can be quickly conveyed by the conveying roller 21 in the first electroplating tank 12, the conveying roller 21 can transfer the electroplating solution which is wet on the conveying roller to the battery piece 4 through rotation of the conveying roller, and then the plated area on the first surface of the battery piece 4 is electroplated in advance to form a thinner metal grid line substrate, and in addition, the risk that the electroplating solution overflows the second surface of the battery piece 4 due to vibration or unstable liquid level can be reduced.

Example 2

As shown in fig. 7 to 9, unlike in example 1, the first liquid-dividing tank 11, the first plating tank 12, the second liquid-dividing tank 13, the second plating tank 14, and the third liquid-dividing tank 15 constitute an upper tank, and a lower tank 16 communicating the first liquid-dividing tank 11, the second liquid-dividing tank 13, and the third liquid-dividing tank 15 is provided below the upper tank. Plating solution can collect lower floor's cell body 16 from first separate cistern 11, second separate cistern 13 and third separate cistern 15, and lower floor's cell body 16 volume is great can store plating solution in a large number, and first separate cistern 11, second separate cistern 13 and third separate cistern 15 as the intermediate tank body of intercommunication lower floor's cell body 1 can be designed into less volume for first separate cistern 11, second separate cistern 13 and third separate cistern 15 can be less in the length of cell 4 direction of delivery, and then reduces the length dimension of electroplating equipment in cell 4 direction of delivery.

Specifically, the first liquid separating tank 11 is communicated with the lower tank 16 through the first liquid through hole 111, the second liquid separating tank 13 is communicated with the lower tank 16 through the second liquid through hole 131, and the third liquid separating tank 15 is communicated with the lower tank 16 through the third liquid through hole 151. The lower tank 16 is provided with a drain hole 161, and the plating solution can be returned to the first plating tank 12 and/or the second plating tank 14 through the drain hole 161.

In some embodiments, an auxiliary anode member 31 capable of facing the second surface of the battery sheet 4 in the plated state is provided in the first plating tank 12; in the electroplating working state, when the battery piece 4 is positioned in the first electroplating tank 12, the auxiliary anode piece 31 is electrically connected with the positive electrode of the power supply 5, and the second surface of the battery piece 4 is electrically connected with the negative electrode of the power supply 5. The current density acting on the auxiliary anode member 31 is much smaller than the current density acting on the anode member 3, so that a plating circuit of a minute current is formed between the positive electrode of the power source 5, the auxiliary anode member 31, the second face of the battery piece 4 and the negative electrode of the power source 5, thereby suppressing corrosion of the second face of the battery piece 4 by the plating solution. For example, the current applied to the auxiliary anode member 31 is far 0.1-2ASD and the current applied to the anode member 3 is 15-50ASD.

Other structures of the electroplating apparatus in this embodiment may refer to the solution in embodiment 1 or be modified appropriately based on the solution in embodiment 1, which will not be described in detail.

Example 3

In the present embodiment, the battery piece 4 is kept in a vertical state when being plated, and therefore, the partial structure of the plating apparatus in the present embodiment is made different from that in embodiment 1.

As shown in fig. 10 to 11, an electroplating apparatus includes a first electroplating tank 12, a second electroplating tank 14, and a conveying mechanism 2, wherein an anode member 3 capable of facing a first surface of a battery 4 in an electroplating state is disposed in the first electroplating tank 12, an anode member 3 capable of facing the first surface of the battery 4 in an electroplating state and an anode member 3 facing a second surface of the battery 4 are disposed in the second electroplating tank 14, and the conveying mechanism 2 is capable of transferring the battery 4 from the first electroplating tank 12 to the second electroplating tank 14.

In some embodiments, the conveyor mechanism 2 is a linear module or a chain conveyor mechanism or a robot. When the conveying mechanism 2 is a linear module, the driving end of the linear module is fixedly provided with a lifting driving mechanism 8, and the driving end of the lifting driving mechanism 8 is fixedly provided with a clamp 7. When the conveying mechanism 2 is a chain type conveying mechanism, a lifting driving mechanism 8 is fixedly arranged on a conveying chain of the chain type conveying mechanism, and a clamp 7 is fixedly arranged at a driving end of the lifting driving mechanism 8. When the conveying mechanism 2 is a manipulator, a lifting driving mechanism 8 is fixedly arranged at the driving end of the manipulator, and a clamp 7 is fixedly arranged at the driving end of the lifting driving mechanism 8. The clamp 7 is used for clamping and fixing the battery piece 4 and exposing a plated area on the battery piece 4, for example, the clamp 7 clamps an edge area of the battery piece 4 and exposes a middle area of the battery piece 4, and the plated area of the battery piece 4 is located in the middle area of the battery piece 4.

Specifically, the conveying mechanism 2 conveys the jig 7 carrying the battery piece 4 to a position right above the first plating tank 12, the lifting driving mechanism 8 drives the jig 7 carrying the battery piece 4 to fall into the first plating tank 12, and plating is performed in advance on a plated area on the first face of the battery piece 4 in the first plating tank 12 to form a metal grid line substrate. After the electroplating of the metal grid line substrate is completed, the lifting driving mechanism 8 drives the clamp 7 carrying the battery piece 4 to rise to the position right above the first electroplating tank 12, the conveying mechanism 2 conveys the clamp 7 carrying the battery piece 4 to the position right above the second electroplating tank 14, the lifting driving mechanism 8 drives the clamp 7 carrying the battery piece 4 to fall into the second electroplating tank 14, and the electroplating is simultaneously carried out on the plated areas on the first surface and the second surface of the battery piece 4 in the second electroplating tank 14 so as to form the metal grid line on the two surfaces of the battery piece 4. After the metal grid plating is completed on both sides of the battery piece 4, the lifting drive mechanism 8 drives the clamp 7 carrying the battery piece 4 to rise to the position right above the second plating tank 14, and the conveying mechanism 2 conveys the clamp 7 carrying the battery piece 4 to a blanking position where the clamp 7 carrying the battery piece 4 or the battery piece 4 is blanked.

In this embodiment, the plated area on the first surface of the battery piece 4 is first plated in the first plating tank 12 to form the metal grid line substrate, and then the plated area on the two surfaces of the battery piece 4 is simultaneously plated in the second plating tank 14 to form the metal grid line on the two surfaces of the battery piece 4. When double-sided electroplating is performed, the plated area on the first surface of the battery piece 4 is already provided with a metal grid line substrate, and electroplating is performed on the metal grid line substrate, so that the attachment effect of metal ions can be improved, the probability that the electric field lines acting on the first surface of the battery piece 4 are wound on the second surface of the battery piece 4 is reduced, and the risk that the plated area on the first surface of the battery piece 4 is broken or grid lines are missing is reduced.

In some embodiments, as shown in fig. 12, an auxiliary anode member 31 capable of facing the second surface of the battery sheet 4 in the plating state is provided in the first plating tank 12; in the electroplating working state, when the battery piece 4 is positioned in the first electroplating tank 12, the auxiliary anode piece 31 is electrically connected with the positive electrode of the power supply 5, and the second surface of the battery piece 4 is electrically connected with the negative electrode of the power supply 5. The current density acting on the auxiliary anode member 31 is much smaller than the current density acting on the anode member 3, so that a plating circuit of a minute current is formed between the positive electrode of the power source 5, the auxiliary anode member 31, the second face of the battery piece 4 and the negative electrode of the power source 5, thereby suppressing corrosion of the second face of the battery piece 4 by the plating solution, which process may be referred to as micro-plating. For example, the current applied to the auxiliary anode member 31 is far 0.1-2ASD and the current applied to the anode member 3 is 15-50ASD.

Specifically, in the first plating tank 12, two sets of anode members 3 are provided, and the first surfaces of the two or two sets of battery pieces 4 are respectively plated, and two sets of auxiliary anode members 31 are provided, and the second surfaces of the two or two sets of battery pieces 4 are respectively micro-plated. In the second plating tank 14, two sets of anode members 3 are provided for plating the first surfaces of the two or two sets of battery pieces 4, and two sets of auxiliary anode members 31 are provided for plating the second surfaces of the two or two sets of battery pieces 4.

Other structures of the electroplating apparatus in this embodiment, such as the electroplating circuit structure and the fluid infusion device, may be modified appropriately with reference to the solution in embodiment 1 or on the basis of the solution in embodiment 1, and this embodiment will not be described again.

Example 4

A plating method comprising the steps of: firstly, electroplating a plated area on a first surface of the battery piece 4 in advance to form a metal grid line substrate; electroplating the plated areas on the first surface and the second surface of the battery piece 4 at the same time to form metal grid lines on the two surfaces of the battery piece 4; wherein the plated area on the first side of the battery piece 4 is larger than the plated area on the second side of the battery piece 4. When double-sided electroplating is performed, the plated area on the first surface of the battery piece 4 is already provided with a metal grid line substrate, and electroplating is performed on the metal grid line substrate, so that the attachment effect of metal ions can be improved, the probability that the electric field lines acting on the first surface of the battery piece 4 are wound on the second surface of the battery piece 4 is reduced, and the risk that the plated area on the first surface of the battery piece 4 is broken or grid lines are missing is reduced.

In some embodiments, when the plated area on the first surface of the battery piece 4 is plated in advance, the plating solution only submerges the first surface of the battery piece 4, and the second surface of the battery piece 4 is not contacted with the plating solution, so that the electric field lines acting on the first surface of the battery piece 4 cannot wind onto the second surface of the battery piece 4, the occurrence of winding plating is avoided, and a uniform metal grid line substrate can be formed by electroplating the plated area on the first surface of the battery piece 4. When the plating areas on the first surface and the second surface of the battery piece 4 are plated at the same time, the plating solution submerges the first surface of the battery piece 4 and the second surface of the battery piece 4, and then both surfaces of the battery piece 4 can be plated at the same time.

Specifically, in the first plating tank 12, the plated area on the first surface of the battery piece 4 is first plated in advance to form a metal grid line substrate; in the second plating tank 14, the plated areas on the first and second sides of the battery piece 4 are plated at the same time to form metal grid lines on both sides of the battery piece 4. After the cell 4 is horizontally transferred to the first plating tank 12 to complete the plating of the metal grid substrate, it is horizontally transferred to the first plating tank 12 to complete the plating of the metal grid, and the level of the plating solution in the second plating tank 14 is higher than that in the first plating tank 12.

In some embodiments, when the plated area on the first surface of the battery piece 4 is plated in advance, the current density acting on the plated area on the first surface is J ₁ The method comprises the steps of carrying out a first treatment on the surface of the When plating is performed simultaneously on the plated areas on the first and second sides of the battery piece 4, the current density acting on the plated areas on the first side is J ₂ The method comprises the steps of carrying out a first treatment on the surface of the So that J ₁ Greater than J ₂ . That is, when plating is performed in advance on the plated region on the first surface of the battery piece 4, the occurrence of the wrap-around plating is reduced, and a larger current density J can be used ₁ Electroplating is carried out, and the electroplating efficiency is improved; when the plated areas on the first and second sides of the battery 4 are plated at the same time, a smaller current density J is used ₂ Electroplating is performed so that the interference between the electric field acting on the first face of the battery piece 4 and the electric field acting on the second face of the battery piece 4 is reduced, and then the occurrence probability of winding plating can be reduced, and the electroplating effect is improved.

The plating method in this embodiment can be applied to the plating apparatus in embodiments 1 to 3.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The electroplating equipment is characterized by comprising a first electroplating tank, a second electroplating tank and a conveying mechanism, wherein an anode part capable of facing a first surface of a battery piece in an electroplating state is arranged in the first electroplating tank, an anode part capable of facing the first surface of the battery piece in the electroplating state and an anode part facing a second surface of the battery piece are arranged in the second electroplating tank, and the conveying mechanism can transfer the battery piece from the first electroplating tank to the second electroplating tank;

2. Electroplating apparatus according to claim 1, wherein: the electroplating equipment further comprises a second liquid separation tank arranged between the first electroplating tank and the second electroplating tank, wherein a first overflow hole is formed in the side wall, close to the second liquid separation tank, of the first electroplating tank, the first electroplating tank is communicated with the second liquid separation tank through the first overflow hole, a second overflow hole is formed in the side wall, close to the second liquid separation tank, of the second electroplating tank, and the second electroplating tank is communicated with the second liquid separation tank through the second overflow hole;

3. Electroplating apparatus according to claim 2, wherein: the roller conveying mechanism comprises a plurality of conveying rollers which are sequentially arranged at intervals, the rotating shafts of the plurality of conveying rollers are mutually perpendicular to the conveying direction of the battery piece, and the rotating shafts of the plurality of conveying rollers are horizontally arranged; and a pressing roller matched with the conveying roller is arranged above part of the conveying roller, and the pressing roller is used for mortgage the battery piece on the conveying roller, so that enough friction force can be provided to drive the battery piece to move in the rotating process of the conveying roller.

4. A plating apparatus according to claim 3, wherein: the conveying roller comprises a roller shaft and a roller sleeve fixedly sleeved outside the roller shaft, and a spiral structure is arranged on the roller sleeve.

5. Electroplating apparatus according to claim 2, wherein: the upstream of the first electroplating bath is also provided with a first liquid separation groove, a first overflow hole is formed in the side wall, close to the first liquid separation groove, of the first electroplating bath, and the first electroplating bath is communicated with the first liquid separation groove through the first overflow hole;

6. The plating apparatus as recited in claim 5, wherein: the electroplating apparatus further comprises at least one of a first liquid reflow device, a second liquid reflow device, a third liquid reflow device, and a fourth liquid reflow device;

7. The plating apparatus as recited in claim 5, wherein: the first liquid separating tank, the first electroplating tank, the second liquid separating tank, the second electroplating tank and the third liquid separating tank form an upper tank body, and a lower tank body communicated with the first liquid separating tank, the second liquid separating tank and the third liquid separating tank is arranged below the upper tank body.

8. The electroplating apparatus of claim 7, wherein: the first liquid separation tank is communicated with the lower tank body through a first liquid passing hole, the second liquid separation tank is communicated with the lower tank body through a second liquid passing hole, the third liquid separation tank is communicated with the lower tank body through a third liquid passing hole, a liquid outlet hole is formed in the lower tank body, and electroplating liquid is refluxed to the first electroplating tank and/or the second electroplating tank through the liquid outlet hole.

9. Electroplating apparatus according to claim 1, wherein: an auxiliary anode part which can be opposite to the second surface of the battery piece in an electroplating state is arranged in the first electroplating bath; in the electroplating working state, when the battery piece is positioned in the first electroplating bath, the auxiliary anode piece is electrically connected with the positive electrode of the power supply, and the second surface of the battery piece is electrically connected with the negative electrode of the power supply.

10. Electroplating apparatus according to claim 1, wherein: the conveying mechanism is a linear module, a chain type conveying mechanism or a manipulator;