Conductive device for continuous electroplating of strip-shaped material

Abstract

The utility model discloses a conductive device for continuous electroplating of a strip-shaped material, which relates to the technical field of electroplating equipment and comprises a first conductive part, a second conductive part and an elastic component, the elastic assembly is connected with the first conductive part and the second conductive part and is configured to drive the first conductive part and the second conductive part to get close to each other. The conductive device for continuous electroplating of the strip-shaped material can be in good contact with the strip-shaped material, so that the coating quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electroplating equipment, in particular to a conductive device used for continuous electroplating of strip materials. Background Art

[0002] In the field of lithium battery manufacturing, strip materials are often used as battery current collectors. In order to improve the conductivity of the current collector, the surface of the strip material is plated to form a metal film layer. Usually, electroplating is used to plate the strip material, and in order to save processing time, the strip material is electroplated in the process of continuous feeding.

[0003] For example, when the strip material enters the electrolytic cell and contacts the electrolyte during the feeding process, the electrolytic cell is provided with an anode. At this time, the strip material needs to be connected to the negative electrode of the power supply so that the strip material itself can be used as a cathode to coat the surface of the strip material. However, it is difficult to achieve a stable connection between the negative electrode of the power supply and the strip material in the feeding process, and the current flowing through the strip material is unstable, resulting in poor quality of the coating on the surface of the strip material. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a conductive device for continuous electroplating of strip materials, which can maintain good contact with the strip materials and improve the quality of the coating.

[0005] According to an embodiment of the utility model, a conductive device for continuous electroplating of strip materials comprises: a first conductive portion and a second conductive portion arranged opposite to each other;

[0006] An elastic component connects the first conductive part and the second conductive part, and is configured to drive the first conductive part and the second conductive part to approach each other.

[0007] The conductive device for continuous electroplating of strip materials according to the embodiment of the utility model has at least the following beneficial effects: the first conductive part and the second conductive part can be respectively connected to the negative pole of the power supply, or connected to the negative pole of the power supply together for conduction; the elastic component applies external force to the first conductive part and the second conductive part to drive the first conductive part and the second conductive part to approach each other, and as long as the strip material is located between the first conductive part and the second conductive part, the contact degree between the first conductive part and the second conductive part and the strip material can be floatingly adjusted by the elastic component, and even if the strip material is in the process of feeding, it can maintain good contact with the negative pole of the power supply, thereby improving the quality of the coating on the surface of the strip material.

[0008] According to some embodiments of the utility model, one side of the first conductive part is a first connection side, and the other side is a first contact side, and the first connection side and the first contact side are deformable; one side of the second conductive part is a second connection side, and the other side is a second contact side, and the second connection side and the second contact side are deformable; the first connection side and the second connection side are fixedly connected, and the first contact side and the second contact side are relatively distributed; one end of the elastic component is connected between the first connection side and the first contact side, and the other end is connected between the second connection side and the second contact side.

[0009] According to some embodiments of the present invention, both the first contact side and the second contact side are provided with a roller assembly, the two roller assemblies are relatively distributed, and the contact surfaces of the two roller assemblies are parallel to each other.

[0010] According to some embodiments of the utility model, the roller assembly includes a wheel seat, a roller shaft and a roller, the first contact side and the second contact side are each provided with a wheel seat, the wheel seat is provided with a wheel groove, the roller shaft passes through the wheel groove, the roller is mounted on the roller shaft, and the roller is placed in the wheel groove.

[0011] According to some embodiments of the present invention, the contact surface of the roller is located outside the wheel groove, and the distance between the contact surface of the roller and the top plane of the wheel groove is h, wherein 1mm≤h≤2mm.

[0012] According to some embodiments of the present invention, the first conductive portion and the second conductive portion are both spring sheets, the spring sheets are bent, and the two spring sheets are connected to each other to form a V-shaped structure.

[0013] According to some embodiments of the present invention, the first connection side and the second connection side are in contact with each other.

[0014] According to some embodiments of the present invention, a through hole is provided at the joint between the first connecting side and the second connecting side.

[0015] According to some embodiments of the present utility model, the elastic component is a spring, the spring is arranged between the two spring sheets, and the spring is in a stretched state.

[0016] According to some embodiments of the present utility model, both ends of the spring are provided with connecting hooks, and the spring hooks the spring sheet through the connecting hooks.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic structural diagram of a conductive device for continuous electroplating of strip materials according to an embodiment of the utility model;

[0020] Figure 2 It is a schematic structural diagram of a roller assembly according to an embodiment of the utility model.

[0021] Figure Number:

[0022] The first conductive part 100 , the through hole 110 , the second conductive part 200 , the elastic component 300 , the connecting hook 310 , the roller component 400 , the wheel seat 410 , the wheel groove 411 , the roller 420 , the roller 430 , and the strip material 500 . DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] In the field of lithium battery manufacturing, strip materials are often used as battery current collectors. In order to improve the conductivity of the current collector, the surface of the strip material is plated to form a metal film layer. Usually, electroplating is used to plate the strip material, and in order to save processing time, the strip material is electroplated in the process of continuous feeding.

[0028] For example, in some new current collector manufacturing processes, foam cotton is used as a substrate. After a metal film layer is plated on both sides of the foam cotton, foam metal can be made. Foam metal can be used as the negative electrode current collector of lithium batteries. The advantages of foam metal as a negative electrode material are: 1. High safety. When a lithium battery is punctured, no burrs will be generated at the punctured part of the electrode, avoiding short circuits in the lithium battery. 2. It can reduce the production cost and weight of lithium batteries, while having high energy density. When using foam metal as a negative electrode material, the amount of copper used is about 1 / 7 of the amount of traditional copper foil. 3. It can improve the charging performance of lithium batteries. The charging rate can be increased by 4 times compared to traditional lithium batteries.

[0029] In some electroplating examples, the strip material enters the electrolytic cell during the material feeding process and contacts the electrolyte. The electrolytic cell is provided with an anode. At this time, the strip material needs to be connected to the negative electrode of the power supply so that the strip material itself can serve as a cathode and the surface of the strip material can be plated. However, it is difficult to achieve a stable connection between the negative electrode of the power supply and the strip material in the feeding process, and the current flowing through the strip material is unstable, resulting in poor quality of the film coating on the surface of the strip material.

[0030] Reference Figure 1 As shown, a conductive device for continuous electroplating of strip materials according to an embodiment of the utility model comprises a first conductive part 100, a second conductive part 200 and an elastic component 300 arranged opposite to each other. The elastic component 300 connects the first conductive part 100 and the second conductive part 200, and the elastic component 300 is configured to drive the first conductive part 100 and the second conductive part 200 to approach each other. The conductive device for continuous electroplating of strip materials according to the embodiment of the utility model can maintain good contact with the strip material and improve the quality of the coating.

[0031] The first conductive part 100 and the second conductive part 200 can be connected to the negative pole of the power supply respectively, or the first conductive part 100 and the second conductive part 200 can be turned on and then connected to the negative pole of the power supply. The elastic component 300 can be arranged in the middle of the first conductive part 100 and the second conductive part 200, for driving the first conductive part 100 and the second conductive part 200 to be in a state close to each other. At this time, only the strip material needs to be moved between the first conductive part 100 and the second conductive part 200, and the elastic component 300 can be used to float and adjust the contact degree of the first conductive part 100 and the second conductive part 200 with the strip material. Even if the strip material is in the process of moving, the strip material can be kept in good contact with the negative pole of the power supply (the first conductive part 100 and the second conductive part 200), and the quality of the surface coating of the strip material is improved.

[0032] It can be understood that one side of the first conductive part 100 is the first connection side, and the other side is the first contact side, and the first connection side and the first contact side are deformable, one side of the second conductive part 200 is the second connection side, and the other side is the second contact side, and the second connection side and the second contact side are deformable, the first connection side and the second connection side are fixedly connected, and the first contact side and the second contact side are relatively distributed, and one end of the elastic component 300 is connected between the first connection side and the first contact side, and the other end is connected between the second connection side and the second contact side.

[0033] The elastic component 300 is located between the first conductive part 100 and the second conductive part 200. By pre-configuring the elastic component 300 so that it is in a contraction trend, the first conductive part 100 and the second conductive part 200 can be pulled closer to each other. Since the first connection side and the first contact side can be deformed, and the second connection side and the second contact side can be deformed, even if the first connection side and the second connection side are fixedly connected, the elastic component 300 can pull the first contact side and the second contact side closer to each other. In the above structure, the negative pole of the power supply is electrically connected to the first connection side and the second connection side, and the first contact side and the second contact side can be close to each other to contact the strip material, so as to conduct the circuit to the surface of the strip material, so that the strip material becomes the cathode for electroplating.

[0034] It can be understood that the first contact side and the second contact side are both provided with a roller assembly 400 , the two roller assemblies 400 are arranged opposite to each other, and the contact surfaces of the two roller assemblies 400 are parallel to each other.

[0035] The first contact side and the second contact side are used to contact with the strip material, and in order to achieve continuous electroplating of the strip material, the strip material needs to be continuously fed. Therefore, the contact between the first contact side and the second contact side and the strip material is a sliding friction contact. In order to reduce the friction force of the first contact side and the second contact side on the strip material and avoid scratching the strip surface, a roller assembly 400 can be provided to convert the sliding friction into rolling friction, thereby greatly reducing the friction force. It should be understood that good electrical contact needs to be ensured in the electroplating process, so the roller assembly 400 is made of a material with good electrical conductivity. In certain cases, the surface of the strip material will be pre-processed to be covered with a thinner metal film layer in advance, and further electroplating on the basis of the metal film layer can improve the bonding strength between the electroplated metal film layer and the strip material and avoid the metal film layer from falling off. Therefore, in the aforementioned case, a roller assembly 400 should be added to contact the strip material to avoid damage to the metal film layer pre-covered on the surface of the strip material.

[0036] Reference Figure 2As shown, it can be understood that in some specific embodiments, the roller assembly 400 includes a wheel seat 410, a roller shaft 420 and a roller 430, and a wheel seat 410 is provided on the first contact side and the second contact side. The wheel seat 410 is provided with a wheel groove 411, and the roller shaft 420 passes through the wheel groove 411. The roller 430 is mounted on the roller shaft 420, and the roller 430 is placed in the wheel groove 411.

[0037] It should be understood that the wheel seat 410, the roller 420 and the roller 430 can all be made of conductive materials to achieve electrical connection between the roller 430 and the first conductive part 100 or the second conductive part 200. The wheel groove 411 provides a receiving cavity for the roller 430. It should be understood that a small area of ​​the roller 430 will protrude outside the wheel groove 411 as the contact surface of the roller 430. The contact surface of the roller 430 refers to the part where the roller 430 contacts the strip material, and the cross section of the contact part is the contact surface of the roller 430.

[0038] It is understood that the contact surface of the roller 430 is located outside the wheel groove 411, and the distance between the contact surface of the roller 430 and the top plane of the wheel groove 411 is h, where 1mm≤h≤2mm. If the distance h is greater than 2mm, the distance between the two opposite wheel seats 410 increases, which is not conducive to position restriction of the strip material. If the distance h is less than 1mm, the top plane of the wheel groove 411 may prevent the roller 430 from contacting the strip material.

[0039] It can be understood that the first conductive part 100 and the second conductive part 200 are both spring sheets, the spring sheets are bent, and the two spring sheets are connected to each other to form a V-shaped structure. Further, the first connection side and the second connection side are attached to each other.

[0040] After the first connection side and the second connection side are attached to each other, the negative electrode of the power source is connected to the first conductive part 100 and the second conductive part 200 for conduction.

[0041] It can be understood that a through hole 110 is provided at the joint of the first connecting side and the second connecting side.

[0042] After the through hole 110 is provided, it is convenient to connect the conductive bolt through the through hole 110. The conductive bolt and the nut are connected, and a gasket can be added at the nut to increase the contact area and reduce the impedance.

[0043] It can be understood that the elastic component 300 is a spring, which is arranged between two spring sheets and is in a stretched state.

[0044] The spring reserved in the stretched state has a tendency to contract, so the spring arranged between the two spring leaves can pull the spring leaves closer to each other and generate deformation, that is, the first contact side and the second contact side can maintain good contact with the strip material.

[0045] It can be understood that both ends of the spring are provided with connecting hooks 310 , and the spring hooks the spring sheet through the connecting hooks 310 .

[0046] The spring sheet may be provided with a corresponding structure for the connection hook 310 to hook, such as a connection hole or a connection groove. After the spring is stretched, the connection hook 310 is hooked into the connection hole of the spring sheet, and the spring can drive the first conductive part 100 and the second conductive part 200 to approach each other and maintain the trend of approaching each other.

[0047] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A conductive device for continuous electroplating of strip materials, characterized in that: include: A first conductive portion (100) and a second conductive portion (200) arranged opposite to each other; An elastic component (300) is provided, wherein the elastic component (300) connects the first conductive part (100) and the second conductive part (200), and the elastic component (300) is configured to drive the first conductive part (100) and the second conductive part (200) to approach each other.

2. The conductive device for continuous electroplating of strip materials according to claim 1, characterized in that: One side of the first conductive part (100) is a first connection side, and the other side is a first contact side, and the first connection side and the first contact side are deformable, one side of the second conductive part (200) is a second connection side, and the other side is a second contact side, and the second connection side and the second contact side are deformable, the first connection side and the second connection side are fixedly connected, the first contact side and the second contact side are relatively distributed, one end of the elastic component (300) is connected between the first connection side and the first contact side, and the other end is connected between the second connection side and the second contact side.

3. The conductive device for continuous electroplating of strip materials according to claim 2, characterized in that: The first contact side and the second contact side are both provided with a roller assembly (400), the two roller assemblies (400) are arranged opposite to each other, and the contact surfaces of the two roller assemblies (400) are parallel to each other.

4. The conductive device for continuous electroplating of strip materials according to claim 3, characterized in that: The roller assembly (400) comprises a wheel seat (410), a roller shaft (420) and a roller (430), wherein the first contact side and the second contact side are each provided with a wheel seat (410), the wheel seat (410) is provided with a wheel groove (411), the roller shaft (420) passes through the wheel groove (411), the roller (430) is sleeved on the roller shaft (420), and the roller (430) is placed in the wheel groove (411).

5. The conductive device for continuous electroplating of strip materials according to claim 4, characterized in that: The contact surface of the roller (430) is located outside the wheel groove (411), and the distance between the contact surface of the roller (430) and the top plane of the wheel groove (411) is h, wherein 1 mm≤h≤2 mm.

6. The conductive device for continuous electroplating of strip materials according to claim 2, characterized in that: The first conductive part (100) and the second conductive part (200) are both spring sheets, the spring sheets are bent, and the two spring sheets are connected to each other to form a V-shaped structure.

7. The conductive device for continuous electroplating of strip materials according to claim 6, characterized in that: The first connection side and the second connection side are attached to each other.

8. The conductive device for continuous electroplating of strip materials according to claim 7, characterized in that: A through hole (110) is provided at the joint between the first connection side and the second connection side.

9. The conductive device for continuous electroplating of strip materials according to claim 6, characterized in that: The elastic component (300) is a spring, which is arranged between the two spring sheets and is in a stretched state.

10. The conductive device for continuous electroplating of strip materials according to claim 9, characterized in that: Both ends of the spring are provided with connecting hooks (310), and the spring hooks the spring sheet through the connecting hooks (310).

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