Northvolt Ab

Sean Stephenson

Neil Carlisle

A method and control arrangement for monitoring coating quality during production of electrodes of secondary cells. The production of electrodes comprises a coating process including coating slurry onto a conductive substrate and drying the coated conductive substrate, and a calendering process. The method comprises measuring (S), during the coating process and/or calendering process, power consumption of one or more electrical components used for performing the coating process and/or calendering process and evaluating (S) the coating quality by analyzing the measured power consumption using coating quality criteria, wherein the coating quality criteria defines coating quality of the secondary cells based on measured power consumption of the one or more electrical components.

Method and control arrangement for monitoring coating quality of secondary cells

The present disclosure generally pertains to testing of secondary batteries. More specifically, the disclosure relates to a movable walk-in chamber for testing secondary cells. According to a first aspect, the present disclosure relates to a movable walk-in chamber for testing secondary cells comprising an enclosure, racking, a plurality of cycler interfaces and cabling. The enclosure form at least one thermally isolated temperature chamber. Furthermore, the enclosure comprises a walking aisle arranged between an entrance and an exit. The racking is arranged at inner walls of the enclosure along the walking aisle. Secondary cells can be inserted in the racking for testing and removed after testing. The plurality of cycler interfaces are arranged at outer walls of the enclosure. Each cycler interface comprises a power interface and one or more cell interfaces. The cabling is arranged to connect the power interfaces to at least one central power connector, whereby cyclers connected to the cycler interfaces can be powered from the movable walk-in chamber. The cabling is also arranged to connect the cell interfaces to poles of secondary cells inserted in the racking, whereby cyclers connected to the cycler interfaces are able to perform testing on cells arranged in the racking.

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Bureå, Sweden

Sean Stephenson