KPI
Cluster-KPIs
OEE(Overall Equipment Effectiveness)-Potential
Current estimated OEE:
- Availability = 77,82 %
- Performance = 72,98 %
- Quality = tbd
→
Target OEE:
- Availability = 77,82 %
- Performance = 72,98 %
- Quality = tbd + x%
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TCO-Potential
Saving potential energy costs:
- Forming process: The forming process accounts for approx. 9.4 % of the energy costs in the processes considered (packaging to forming).
Current estimated TCO:
- Current energy consumption of forming process: 15 Ah per 870 mAh cell
Target TCO:
- Reduction of energy consumption in the forming process by 20 % results in a reduction of total energy costs by approx. 2 % ()
Project-KPIs
Material consumption per unit
Models can be used to estimate the amount of electrolyte required and to reduce it. In contrast to the active material, a greater potential for reduction is seen here, since the active material has a direct influence on the energy content of the cell.
Current electrolyte consumption:
- 4 ml per 870 mAh cell
Target electrolyte consumption:
- 3.5 ml per 870 mAh cell
Contributes to the reduction of production costs (not listed in OEE/TCO)
Energy consumption per unit
The energy consumption per unit can be reduced by optimizing the forming process.
Current energy consumption:
- 15 Ah per 870 mAh cell
Target energy consumption:
- 12 Ah per 870 mAh cell
Variable production costs
The variable production costs are composed of the energy, material, scrap and manufacturing costs.
Current variable production costs:
- 100%
Target variable production costs:
- 90%
Literature
Rao et al.: Enhancing Overall Equipment Effectiveness in Battery Industries through Total Productive Maintenance, International Journal of Engineering Research in Mechanical and Civil Engineering (2017) Pettinger, K.-H.; Dong, W.: When Does the Operation of a Battery Become Environmentally Positive? Journal of The Electrochemical Society 164 (2017)
