With the rapid rise of new energy vehicles, the lithium battery industry has also ushered in explosive growth. The production process of lithium batteries is more complex, and there are differences in the production process of different battery types, but the manufacturing process is roughly the same, which is the front process (pole piece production), the middle process (cell production) and the back process (chemical capacity and battery assembly).
Lithium battery is a power source with high energy density, and its production technology is gradually developing and maturing. There are some potential safety hazards in the production process of lithium batteries, such as: high temperature, high pressure, flammable, explosive, etc., so there are extremely high requirements for the accuracy, stability and automation of related equipment in the production and manufacturing process of batteries.
Safety protection in the liquid injection process
Lithium battery liquid injection is an important part of the production of lithium-ion batteries, involving multiple production processes such as liquid injection machine, separator, pole piece, electrolyte, etc. In this process, there are also many potential risks, such as the operator's misoperation of the battery injector, or the problem of the injector itself's control system, resulting in mechanical risks such as motors and cylinders.
Here's how Pilz is helping customers to secure their injectors.
As shown in the figure above, a liquid injection machine in the middle process has more than 40 safety doors, and each safety door must realize the safety interlock monitoring and locking function
In the Pilz solution, the main and secondary door structures on the existing side doors were designed as follows:
First: Use the safety interlock switch of the PSEN me5 series with locking function on the main door
Second: Use the safety interlock switch of the PSEN me4 series without locking function on the secondary door
Due to mechanical limitations, the secondary door must be closed before the main door before it can be closed properly. If the main door closes first, it will block the tongue of the secondary door, causing the secondary door to not close properly.
Only one set of safety interlock switch with locking function and one set of safety interlock switch without locking function are required to realize the safety interlock and locking function, which can achieve safety and save costs at the same time.
The powerful control system provides safe protection for liquid injection
The configurable safety controller from Pilz PNOZ multi is a good choice for flexible applications, whether it is a simple small device (e.g. a testing machine) or a complex medium and large device with dozens of safety functions (e.g. filling machine, module assembly line, etc.), PNOZ multi can meet the customer's needs with a flexible combination of expansion modules according to the actual needs of different equipment.
With the graphical software tool PNOZmulti Configurator, even novices with no programming experience can build a safety program for their devices very quickly and easily. In addition, a wide range of fieldbus and communication modules can provide docking capabilities with the host computer.
Safety solutions from Pilz are used in a wide range of applications in all areas of mechanical engineering, such as new energies, automobiles, robotics, wind power and railway technology.
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