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Created page with "== Cluster-KPIs == === OEE(Overall Equipment Effectiveness)-Potential === <math>Availability \times Performance \times Quality Availability = \frac{actual production time}{po..."
== Cluster-KPIs ==
=== OEE(Overall Equipment Effectiveness)-Potential ===
<math>Availability \times Performance \times Quality
Availability = \frac{actual production time}{possible production time} \times 100
Performance = \frac{actual output}{possible output} \times 100
Quality = \frac{flawless products}{actual output} \times 100</math>
Current estimated OEE:
* Availability = 77,82 %
* Performance = 72,98 %
* Quality = tbd
→ <math> 77,82% \times 72,98% \times tbd = </math>
Target OEE:
* Availability = 77,82 %
* Performance = 72,98 %
* Quality = tbd + x%
→ <math> 77,82% \times 72,98% \times tbd = </math>
=== TCO-Potential ===
<math> TCO = Acquisition costs + Personnel costs + '''Energy costs''' + Maintenance costs + Downtime costs + Running costs (e.g., training courses) + Opportunity costs + Costs for operating materials + Disposal costs + Energy efficiency + '''CO_2 balance''' </math>
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 % (<math>20 % \times 9.4 %</math>)
== 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)
=== OEE(Overall Equipment Effectiveness)-Potential ===
<math>Availability \times Performance \times Quality
Availability = \frac{actual production time}{possible production time} \times 100
Performance = \frac{actual output}{possible output} \times 100
Quality = \frac{flawless products}{actual output} \times 100</math>
Current estimated OEE:
* Availability = 77,82 %
* Performance = 72,98 %
* Quality = tbd
→ <math> 77,82% \times 72,98% \times tbd = </math>
Target OEE:
* Availability = 77,82 %
* Performance = 72,98 %
* Quality = tbd + x%
→ <math> 77,82% \times 72,98% \times tbd = </math>
=== TCO-Potential ===
<math> TCO = Acquisition costs + Personnel costs + '''Energy costs''' + Maintenance costs + Downtime costs + Running costs (e.g., training courses) + Opportunity costs + Costs for operating materials + Disposal costs + Energy efficiency + '''CO_2 balance''' </math>
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 % (<math>20 % \times 9.4 %</math>)
== 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)
