Portable Coin Cell Electrode Punching Tool

1, the working principle of Coin Cell electrode punching tool

(1) Design of punching die and punch

Coin Cell electrode punching tool is mainly composed of punching die and punch. The punching die is usually custom designed according to the model and size of the button battery, with precise shape and size. The distribution and size of the holes on the mold match the electrode requirements of the button battery. The punch is installed on the stamping equipment, and its material generally has high hardness and wear resistance to ensure that it will not be deformed or damaged during multiple punching operations.

(2) Stamping process and precision control

In the stamping process, the electrode sheet to be punched is placed on the punching die, and the punch is driven by the stamping equipment, and moves downward at a certain pressure and speed, through the electrode sheet, and the unnecessary part of the electrode sheet is washed away, so as to obtain the electrode sheet with a specific shape and size. In this process, the button battery electrode punching tool needs to accurately control the movement trajectory of the punch, stamping pressure and speed and other parameters to ensure the accuracy and quality of the punching. For example, the movement trajectory of the punch must be vertical and stable, otherwise it may lead to irregular punching edges, affecting the dimensional accuracy of the electrode; Too much stamping pressure may damage the electrode or mold, and too little pressure may not be able to complete the punching operation.

2, the role of button battery electrode punching tools in the production of button batteries

(1) Ensure the dimensional accuracy of the electrode sheet

1. Meet battery assembly requirements

The internal space of the button battery is very limited, and the dimensional accuracy of the electrode plate is very high. The electrode punching tool precisely cuts the electrodes to the size and shape required by the design of the button battery, ensuring that the electrodes are accurately installed in the battery housing and fit well with other components (such as diaphragms, electrolytes, etc.). If the electrode size is too large, it may cause the battery assembly to be difficult or even impossible; If the size is too small, it will affect the performance of the battery, such as reduced capacity and increased internal resistance.

2. Improve battery performance consistency

In the mass production of button batteries, the precision of the electrode punching tool ensures the size consistency of each electrode sheet. This consistency is essential to improve the performance consistency of the battery pack. For example, in some battery packs that use multiple button cells in series or in parallel, if there is a large difference in electrode size, the current distribution of each battery during charging and discharging will be uneven, thus affecting the overall performance and life of the battery pack.

(2) Improve production efficiency

1. Fast punching ability

The button battery electrode punching tool has a high punching speed and can complete the punching task of a large number of electrodes in a short time. Compared with manual punching or other inefficient punching methods, the production cycle is greatly shortened and the production efficiency of the enterprise is improved. In the factory of large-scale production of button batteries, multiple punching tools work at the same time, which can meet the large market demand for button batteries.

2. An important part of automated production

On modern button battery production lines, electrode punching tools are often integrated with other automation equipment to form an automated production system. For example, it can be linked with electrode coating machines, dryers, winding machines and other equipment to achieve seamless connection of electrode sheets from preparation to punching to subsequent assembly processes, reducing manual intervention, reducing labor costs, and further improving production efficiency and product quality stability.

(3) Optimize the electrode quality

1. Reduce edge burrs

The high quality button battery electrode punching tool can effectively reduce the burr generated at the edge of the electrode during punching. The presence of burrs will affect the surface flatness of the electrode and the contact performance with other components, which may lead to local short circuit or poor contact. By precisely controlling the mating accuracy of the punch and die, stamping pressure and other parameters, the electrode punching tool can control the burr in a very small range and improve the quality of the electrode sheet.

2. Avoid material damage

In the punching process, if the operation is improper, it is easy to cause damage to the electrode sheet material, such as cracks, delamination and so on. By reasonably designing the shape of the punch and optimizing the stamping process parameters, the damage to the electrode material can be minimized to ensure the integrity and mechanical properties of the electrode, so as to ensure the performance and safety of the button battery.

3, button battery electrode punching tool maintenance and maintenance

(1) Regular cleaning and lubrication

In order to ensure the normal operation of the button battery electrode punching tool, it is necessary to clean it regularly. In the punching process, there will be some metal debris, dust and other impurities attached to the punch and mold, if not cleaned in time, it will affect the punching accuracy and tool life. At the same time, the moving parts of the punch and die should be lubricated regularly to reduce friction resistance and reduce wear.

(2) Inspection and replacement of vulnerable parts

During use, parts such as punches and molds will gradually wear out. Therefore, it is necessary to check the wear of these parts regularly, and replace them in time when it is found that the wear exceeds a certain limit. For example, if the head of the punch is worn and deformed, the punching accuracy will be reduced, and a new punch will need to be replaced at this time. In addition, the hole position of the mold may also be worn or deformed due to long-term use, and it also needs to be repaired or replaced in time.

(3) Calibration and debugging

In order to ensure that the punching accuracy of the button battery electrode punching tool is always maintained at a high level, it is necessary to calibrate and debug it regularly. Standard testing tools and sample electrodes can be used to detect and adjust the parameters of the movement track, punching pressure, punching size, etc., to make it meet the production requirements.

4. Conclusion

Electrode punching tools play an indispensable role in the production of button batteries. It lays a solid foundation for the high performance and high quality production of the button battery by precisely controlling the dimensional accuracy of the electrode, improving the production efficiency and optimizing the quality of the electrode.