Safety protection of lithium battery production process

With global climate change, energy crisis and environmental pollution problems are becoming increasingly prominent, green, energy saving, environmental protection is highly valued, carbon neutrality has become a global consensus, under the influence of factors such as global transportation electrification, power clean energy process acceleration, lithium battery industry market size will usher in rapid growth, power lithium battery demand will increase significantly.

Lithium battery is a complex system, including positive electrode, negative electrode, diaphragm, electrolyte, fluid collector and binder, conductive agent, etc., the production process involves multiple processes, different battery types of its production process is also different, but on the whole, the lithium battery manufacturing process can be divided into the first stage of the process (electrode manufacturing), the middle process (cell synthesis), the later stage of the process (battery assembly).

(Lithium battery production process flow chart)

1、the protection and safety of the liquid injection link

As a key process in the production of lithium battery, the effect of liquid injection not only affects the performance of the battery, but also restricts the production efficiency.

In the previous production process of lithium batteries, many cases can only use manual injection, long injection time, low production efficiency, and high labor costs will have an impact. Therefore, most manufacturers now use automatic injection machines to solve the above problems, but there will still be operator's misoperation of the injection machine, or the control system of the injection machine itself has problems, resulting in mechanical risks such as motors and cylinders.

Here is how to help customers to achieve the safety of the injection machine protection.

(As shown in the above picture of a liquid injection machine, it has many security doors, each security door should achieve security interlock monitoring and locking function)

In the solution, the following design is made in combination with each safety door of the injection machine:

1、Use a safety interlock switch with locking function on the safety door;

2、install a non-contact safety switch.

Safety interlock switch, in line with ISO14119 and GB/T18831 standard interlock structure, with forced mechanical interlock self-detection structure, high reliability. Applicable to scenarios such as monitoring security doors and Windows.

The non-contact safety switch complies with ISO13849-1 PLe standard and IEC 62061 SiL3 standard, and has a dual-channel safety monitoring circuit design. Suitable for monitoring safety doors, safety Windows and safety control components.

Second, the safety control system provides safety protection for the production of lithium batteries

(Battery module production line display）

In lithium battery manufacturing, the liquid injection process is only one of the complex processes in production. Equipment safety control systems such as welding, coating/adhesive detection, battery charging and other processes can not be ignored.

Bytorent safety relays and safety interlock switches, non-contact safety switches can build a powerful safety loop control system. For example, the safety relay, the model variety is rich and diverse, its application is also very flexible, whether it is a simple small equipment (such as testing machine), or complex, with dozens of safety function requirements of large and medium-sized equipment (such as injection machine, module assembly line, etc.), can be based on the actual needs of different operating equipment. Flexible combination with various safety sensors (scram, interlock switch, light curtain, touch side, etc.) to meet customer needs.

In the future, with the continuous progress of technology and the continuous expansion of application demand, the application of Badoun series products in the lithium battery manufacturing industry will be more extensive and in-depth, and make greater contributions to promoting the development of the industry.