Mobile drive unit charging
First Claim
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1. A mobile drive unit (MDU) comprising:
- one or more onboard power sources;
a communication module to receive instructions, from a management module of an inventory system, to retrieve an inventory holder from a particular location in the inventory system;
a drive module to propel the MDU to at least the particular location of the inventory system using power from the one or more onboard power sources; and
a charging interface to couple at least one of the one or more onboard power sources to a charging station associated with an inventory station to charge the one or more onboard power sources while (i) the MDU and the inventory holder are located at the inventory station and (ii) the MDU is expected to remain stationary for an amount of time associated with completion of a task associated with the inventory holder or the MDU.
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Abstract
Some examples include charging an onboard power source of a mobile drive unit (MDU) of an inventory system while the MDU is operating in the inventory system, rather than removing the MDU from service for recharging. As an example, the MDU may receive instructions to retrieve an inventory holder, and an onboard power source of the MDU may be charged while the MDU and the inventory holder are located at the charging station.
60 Citations
20 Claims
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1. A mobile drive unit (MDU) comprising:
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one or more onboard power sources; a communication module to receive instructions, from a management module of an inventory system, to retrieve an inventory holder from a particular location in the inventory system; a drive module to propel the MDU to at least the particular location of the inventory system using power from the one or more onboard power sources; and a charging interface to couple at least one of the one or more onboard power sources to a charging station associated with an inventory station to charge the one or more onboard power sources while (i) the MDU and the inventory holder are located at the inventory station and (ii) the MDU is expected to remain stationary for an amount of time associated with completion of a task associated with the inventory holder or the MDU. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
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determining a charge level for each onboard power source of a plurality of mobile drive units (MDUs); determining a dwell time associated with a first task to be performed with respect to an inventory holder or an MDU of the plurality of MDUs; selecting an MDU of the plurality of MDUs to perform the first task based at least in part on the charge level of the onboard power source of the MDU and the dwell time associated with completing the first task; and charging the onboard power source of the MDU while the first task is being performed. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method comprising:
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determining a charge level of each onboard power source of a plurality of mobile drive units (MDUs); determining a dwell time associated with a first task to be performed with respect to a first inventory holder; determining a dwell time associated with a second task to be performed with respect to a second inventory holder; selecting a first MDU of the plurality of MDUs to retrieve the first inventory holder based at least in part on the charge level of the onboard power source of the first MDU and the dwell time associated with completing the first task; selecting a second MDU of the plurality of MDUs to retrieve the second inventory holder based at least in part on the charge level of the onboard power source of the second MDU and the dwell time associated with completing the second task; charging the onboard power source of the first MDU while the first task is being performed; and charging the onboard power source of the second MDU while the second task is being performed. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification