Lithium battery tab copper strip electroplating conductive device
By designing a conductive device for electroplating of copper tape of lithium battery, the electroplating wheel is used to increase the contact area and the cooling mechanism to reduce the temperature, the problems of low electroplating efficiency and limited production capacity in the prior art are solved, and a more efficient electroplating process is achieved.
Patent Information
- Application Number
- CN202311427061.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-31
- Publication Date
- 2025-05-02
AI Technical Summary
The existing lithium battery ear plating technology has problems such as low contact surfaces, resulting in low electroplating efficiency and limited production capacity.
Design a conductive device for electroplating of copper tape of lithium battery electrodes, including production tanks, plating wheels and cooling mechanisms. The electroplating wheel is wound with a copper belt, the contact area is at least half the circumference of the electroplating wheel, and the temperature of the electroplating wheel is reduced by a cooling mechanism.
By increasing the contact area between the plating wheel and the copper belt, the plating efficiency and production capacity are improved, and the plating failure caused by excessive temperature is reduced through the cooling mechanism.
Smart Images
Figure CN119913591A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of lithium battery tab copper strip electroplating, and in particular relates to a lithium battery tab copper strip electroplating conductive device. Background Art
[0002] With the development of science and technology, active RFID and active IC cards have been studied more and more widely. An ultra-thin soft-pack lithium battery has become the most suitable power source for active RFID and active IC cards due to its light weight, high specific energy, good insulation and low cost.
[0003] At present, the tabs of soft-pack lithium batteries include positive tabs made of metal aluminum and negative tabs made of metal nickel and metal copper. There are many technical problems. Using the current technology in ultra-thin soft-pack lithium batteries will bring further problems: 1. Due to the non-weldability of aluminum, the positive tabs made of metal aluminum need to be converted to nickel. However, the nickel conversion operation is troublesome, and the labor cost increases. The tabs after nickel conversion are easy to be unsoldered and broken. 2. Nickel strips are used as negative tabs in ordinary soft-pack lithium batteries, but nickel is expensive, which is not conducive to reducing production costs. 3. Ultrasonic welding or laser welding is usually used for the welding of tabs. However, the heat generated by these welding methods will have a greater impact on the anti-leakage performance of soft-pack lithium batteries, especially for such ultra-thin soft-pack lithium batteries. First, the heat generated by welding will damage the aluminum-plastic film and cause the battery to short-circuit; second, the heat generated by welding will be transmitted to the inside of the battery through the tabs, causing the battery to leak, swell, and even melt the metal lithium, seriously damaging the service life and battery performance of the soft-pack lithium battery.
[0004] For the above problems, those skilled in the art have proposed various solutions.
[0005] Chinese patent CN101414673A mentions that a nickel-plated layer is provided on one end of the aluminum pole ear, so that the pole ear can be directly welded to the protection circuit, reducing the bending times of the pole ear and not causing desoldering. However, various methods of nickel plating on aluminum have different problems. Electroplating and chemical plating methods for nickel plating on both sides of the aluminum strip will cause the toughness of the aluminum strip to deteriorate, and the pole ear material of the ultra-thin soft-pack lithium manganese battery needs to be made of very thin materials. If the aluminum strip nickel-plated by electroplating or chemical plating is used as the pole ear material, it is very easy to cause the pole ear to break, reducing the product qualification rate and service life; if the aluminum strip nickel-plated by magnetron sputtering or vacuum evaporation method is used to prepare the aluminum strip nickel-plated, the cost of preparing the pole ear material is high, which is not conducive to reducing the production cost of the battery.
[0006] Chinese patent CN101162778A mentions that a tin-nickel alloy layer is coated on the surface of the copper substrate layer to replace the nickel tab as the negative electrode tab. The tab material of this invention can replace the nickel tab to reduce production costs. However, copper also has a relatively high cost, which is not conducive to reducing costs, and it also cannot meet the welding requirements of ultra-thin soft-pack lithium batteries and materials to be welded.
[0007] Moreover, the improved tabs made of aluminum and copper as materials described above have another problem: due to their good thermal conductivity, the heat generated during the welding process will be quickly conducted to the tabs. Excessive heat will damage the insulating layer of the aluminum-plastic film and the tab glue. Heating for too long will also melt the metallic lithium at the negative electrode of the battery, damaging the service life and battery performance.
[0008] At present, in the electroplating process, the electroplating efficiency is low and the product production capacity is limited because the contact surface of the electroplating is not high. Summary of the invention
[0009] The purpose of the present invention is to provide a lithium battery tab copper strip electroplating conductive device to solve the technical problems of low electroplating efficiency and limited product production capacity due to low contact surface of electroplating, so as to achieve the purpose of improving electroplating efficiency and increasing production capacity.
[0010] In order to solve the above technical problems, the present invention provides a lithium battery tab copper strip electroplating conductive device, comprising:
[0011] A production tank, wherein a linear production belt is arranged in the production tank, and a copper belt of a battery tab passes through the production belt;
[0012] Plating wheels, at least one of which is disposed in a production tank, and the distance between the plating wheel and the linear production belt is equal to the radius length of at least one plating wheel, the plating wheel is wound with a copper belt, and the plating wheel is connected to the production tank via a bearing;
[0013] A cooling mechanism is provided to cool the temperature at the plating wheel.
[0014] Furthermore, the contact area between the electroplating wheel and the copper strip is at least half of the circumference of the electroplating wheel.
[0015] Furthermore, an electroplating layer is provided on the outer side of the electroplating wheel.
[0016] Furthermore, the diameter of the electroplating wheel is 15-50 cm.
[0017] Furthermore, the cooling mechanism includes an external water pump and a spray head, and the spray head sprays water supplied by the external water pump.
[0018] The beneficial effects of the present invention are:
[0019] 1. By placing the electroplating wheel in the production tank and winding the copper belt around the electroplating wheel, the contact area is increased, thereby improving the electroplating efficiency and increasing production capacity.
[0020] 2. The electroplating wheel can be cooled by the cooling mechanism, thereby reducing the situation where the electroplating wheel cannot perform electroplating normally due to excessively high temperature.
[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0023] Figure 1 It is a structural schematic diagram of the lithium battery tab copper strip electroplating conductive device of the present invention.
[0024] In the figure:
[0025] 1. Production trough; 11. Production belt;
[0026] 2. Electroplating wheel; 21. Electroplating layer;
[0027] 3. Cooling mechanism; 31. External water pump; 32. Sprinkler head. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0029] Example:
[0030] like Figure 1As shown, a lithium battery tab copper strip electroplating conductive device comprises: a production tank 1, a linear production belt 11 is arranged in the production tank 1, and the copper strip of the battery tab passes through the production belt 11, and also comprises an electroplating wheel 2, at least one electroplating wheel 2 is arranged in the production tank 1, and the distance between the electroplating wheel 2 and the linear production belt 11 is the radius length of at least one electroplating wheel 2, the electroplating wheel 2 is wound with a copper strip, and the electroplating wheel 2 is connected to the production tank 1 through a bearing. Among them, the diameter of the electroplating wheel 2 is 15-50 cm, and the outer side of the electroplating wheel 2 is provided with an electroplating layer 21, and the contact area between the electroplating wheel 2 and the copper strip is at least half of the circumference of the electroplating wheel 2.
[0031] Because the electroplating wheel 2 is wound with a copper strip and has a length of half the circumference of the electroplating wheel 2 , the electroplating wheel 2 can more easily electroplate the copper strip, thereby improving the electroplating efficiency.
[0032] The cooling mechanism 3 is used to cool the temperature of the electroplating wheel 2 , wherein the cooling mechanism 3 includes an external water pump 31 and a spray head 32 , and the spray head 32 sprays water supplied by the external water pump 31 .
[0033] In summary, by placing the electroplating wheel 2 in the production tank 1 and winding the copper belt around the electroplating wheel 2, the contact area is increased, thereby improving the electroplating efficiency and increasing the production capacity. The electroplating wheel 2 can be cooled by the cooling mechanism 3, thereby reducing the situation where the electroplating wheel 2 cannot perform electroplating normally due to excessive temperature.
[0034] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.
[0035] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0037] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A lithium battery tab copper strip electroplating conductive device, characterized in that: include: A production tank (1), wherein a linear production belt (11) is arranged in the production tank (1), and a copper belt of a battery tab passes through the production belt (11); An electroplating wheel (2), at least one of the electroplating wheels (2) is arranged in a production tank (1), and the distance between the electroplating wheel (2) and the linear production belt (11) is equal to the radius length of at least one electroplating wheel (2), the electroplating wheel (2) is wound with a copper belt, and the electroplating wheel (2) is connected to the production tank (1) via a bearing; A cooling mechanism (3) is provided to cool the temperature of the electroplating wheel (2).
2. A lithium battery tab copper strip electroplating conductive device as claimed in claim 1, characterized in that: The contact area between the electroplating wheel (2) and the copper strip is at least half the circumference of the electroplating wheel (2).
3. A lithium battery tab copper strip electroplating conductive device as claimed in claim 2, characterized in that: The outer side of the electroplating wheel (2) is provided with an electroplating layer (21).
4. A lithium battery tab copper strip electroplating conductive device as claimed in claim 3, characterized in that: The diameter of the electroplating wheel (2) is 15-50 cm.
5. A lithium battery tab copper strip electroplating conductive device as claimed in claim 4, characterized in that: The cooling mechanism (3) comprises an external water pump (31) and a spray head (32), and the spray head (32) sprays water supplied by the external water pump (31).