In-process charging

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In-process charging, also referred to as charging-within-process, i.e. charging that is subordinate to an ongoing process, i.e. charging while work processes are progressing, is a type of contactless energy transfer that allows the automated, in-process charging of lithium-ion batteries of automated guided vehicles (AGVs) to be realized. Charge-in-process makes it possible for the vehicles' energy levels to be maintained at a predominantly higher level. This process eliminates the need to change batteries manually. This optimizes workflows and reduces vehicle downtime.

Concept

In-process charging technology uses the principle of electromagnetic induction. The system usually consists of a stationary unit and mobile receiving electronics, with the stationary coil either mounted on the wall or on the floor and the mobile electronics installed in the e-vehicle. When an AGV drives up to the charging point, the intermediate charging process begins fully automatically and without human intervention. Even with very short stopping times, "in-process charging" becomes active in less than a second, with full charging power being achieved immediately. As a result, fleet availability is increased by up to 30%, as downtimes due to charging pauses are eliminated.

For good technical solutions, it is tacitly assumed that a lithium-ion battery chemistry is used that is suitable for high charging currents in order to keep battery degradation within limits, in particular to avoid crumbling of electrodes.

References

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