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DC-ENERGY supplies machines, plants, machine components, tools and services in the entire process chain of battery production: 

From raw material preparation, electrode production and cell assembly to module and pack production.

Battery manufacturing process for LiB

We offer all equipment for Lithium Ion Battery manufacturing


Electrode manufacturing: Mixing

  • With the help of a rotating tool at least two separate draw materials are combined to form a so-called slurry.
  • The production of slurry requires not only active materials but also conductive additives, solvents and binders.
  • A distinction is made between mixing (dry mixing) and dispersing (wet mixing). In addition,the process can be performed under vacuum to avoid gas inclusions.
  • The choice of the mixing and dispersing sequence must be adapted to the electrode design to be produced.


Electrode manufacturing: Coating

● The foil is coated with the slurry using an application tool (e.g.slotdie,doctorblade,aniloxroller).

● The foil is coated either continuously or intermittently in the coating direction.

● Generally, the top and bottom sides of the foil are coated sequentially.

● The coated foil is continuously transferred to the dryer. After the first drying process, the foil coated on one side is fedback to the coating system by a manual transport process.

● Afterwards, the second side is coated according to the process described.


Cell assembly: Separation

● Separation is necessary for the production of the pouch cell and describes the separation of anode, cathode and separator sheets from the roll material (daughter rolls).

● The dried daughter rolls are unwound and fed to the separation tool.

● The cutting process is usually carried out with a shear cut (punchingtool) in a continuous process.

● Depending on the system concept, the individual sheets(coated on both sides) are stored in a magazine or transferred directly to the next process step.


Formation: Cell finishing

● The formation describes the first charging and discharging processes of the battery cell.

● For formation,the cells are put in special good carriers in formation racks and contacted by spring-loaded contact pins.

● The cells are then charged or discharged according to precisely defined current and voltage curves.

● During formation, lithiumions are embedded in the crystal structure of the graphite on the anode side. Here the Solid Electrolyte Interface (SEI) is formed, which creates a interface layer between the electrolyte and the electrode.



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Equipment & Parts

Have a look at out complete product range on reliable, proofen machinery, as well as on the materials we can provide for the production process and your needs


Our complete services help you install, run, improve and optimize your battery production