Wireless charging enabled for robot fleets

Friday, 12 June, 2020 | Supplied by: Vicor Corporation


As robotic fleets reshape logistic, delivery and inspection industries, the demand for more efficient and flexible charging solutions is increasing while the feasibility for these fleets to be managed manually and recharged ad hoc by a 24/7 rotation of personnel is decreasing. The next step is towards enhanced autonomy, whereby normal operations can be sustained without human intervention. This is where WiBotic comes in.

WiBotic provides wireless charging and power optimisation solutions that are integral to charging the rapidly growing ecosystem of aerial, mobile, marine and industrial robots. A range of solutions enable robots and unmanned vehicles (UVs) to be recharged through wireless charging stations, eliminating the need for human operators to physically connect the robots to chargers. In addition, wireless charging technology reduces wear and tear on physical connection points, trip hazards from power cords and floor-mounted charging stations, and the space requirement for dedicated charging rooms.

WiBotic wireless charging solutions are designed to facilitate many-to-many operation, whereby multiple robots (including from different manufacturers) can charge from the same transmitter at different times. Alternatively, an entire fleet of robots can move between a network of transmitters in different locations within a warehouse. In short, any robot can charge from any station, even if the robots have different battery chemistries, voltages and charging current.

Such wireless charging innovation has been made possible with the Vicor 48 V VI Chip PRM Regulator — a 400 W high-efficiency converter that operates from a 36–75 V input to generate a regulated output. The device powers the adaptive matching transmitter onboard the WiBotic TR-110 wireless charging station, which feeds power wirelessly to the robot’s or UV’s onboard receiver. The PRM accepts 48 V from an AC/DC power supply and the output voltage is adaptively controlled and trimmed from approximately 20–55 V.

The Vicor PRM enables consistent, high-efficiency conversion across the full range of impedances, flexibly supporting ‘full charge’ and ‘trickle charge’ modes with no significant drop-off in efficiency at lower power levels — a critical performance benchmark that competing power components failed to achieve, the company claims. This high-efficiency conversion capability yields a tightly consistent, maximum device temperature of 40–45°C, helping to neutralise thermal management constraints across the full power range.

WiBotic delivers a dynamic charging solution that is designed to enable the next generation of autonomy, freeing robotic devices from the confines of manually managed charging processes and helping them achieve new levels of functionality and productivity — with no power constraints to hold them back.

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Online: www.vicorpower.com
Phone: 0011 852 2210 2088
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