Fraunhofer Gesellschaft Zur F Rderung Der Angewandten Forschung E V Ber Vergabeportal Deutsche Evergabe Tender

Prior information notice without call for competition: Miscellaneous special-purpose machinery Description of the procurement: As part of the FFB, batch mixers with appropriate dosing systems are required to manufacture the anode and cathode materials. For the production of the anode material, a batch mixer with a material throughput of approx. 50 to 250 l / h and a dosing system matched to it are required. The cathode material is also said to be produced using batch mixers. The mixers should have a material throughput of approx. 50 to 250 l / h and a throughput of approx. 110 to 1 200 l / h. The cathode material for the mixer is to be provided by a metering unit. Dosage: The delivery of the solid active materials for the cathode (NCA, NMC111, NMC622, NMC811, NMC9XX, LNMO, LCO or LFP) and anode (graphite, silicon) should be in the form of bags or big bags. The raw materials are fed into the intermediate container or directly into the dosing system using suitable devices / systems, taking into account the necessary safety and protective measures. Solvents such as NMP (N-methyl-2-pyrrolidone) or distilled water should be made available in tanks and fed to the system via pipes. The material handling and dosing of the individual components should be largely fully automated. Gravimetric dosing is planned for the solids, while liquids are to be added to the mixer at a constant time using pumps and flowmeters (e.g. volumetric dosing). The control of the dosing devices should be digital (IT interfaces) and linked to the mixing process. If necessary, liquid or dry premixes must be made from conductive carbon black, active material and binder (SBR, PVDF, CMC). Mixer: The cathode materials (e.g. NCA, NMC111, NMC622, NMC811, NMC9XX, LNMO, LCO or LFP) should always be processed using organic solvent NMP (N-methyl-2-pyrrolidone), while the anode materials (e.g. (Graphite, silicon) should be processed with distilled water. All mixers should be quick to convert. Overall, the mixing processes should be easily scalable across different mixer sizes and also be able to work under partial load (20 to 30% of the maximum nominal throughput) without having any influence on the quality of the suspension. The process times for a finished batch should be in the range of a few hours. The material should be added to the mixing container from above and the finished suspension should be able to be conveyed to the coating system in a simple manner using the transport pipes / containers, with the aim of simple and efficient cleaning of the mixing system. The design of the plants for research purposes requires a high degree of flexibility. In addition, it should be possible to produce the material of the other electrode type with each mixer. The electrode pastes are characterized during the mixing process using an in-line rheometer. In addition to a fully automated cleaning syst