Display cart and its power supply system and power supply method
US10742067B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2018 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Apr 5, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display cart includes a pedestal, a lifting frame, and a power supply apparatus including a battery arranged within the pedestal and configured to supply power to an electric apparatus, an external power supply configured to supply power to the battery and/or the electric apparatus, and a capacity management system. The capacity management system includes a control device, a power delivery device, and a capacity statistic device. The control device determines output power of the electric apparatus. The capacity statistic device determines a remaining capacity in the battery, calculates a remaining power supply duration according to the output power of the electric apparatus, and sends a statistic result to the control device. The control device further controls the power delivery device to supply power to the electric apparatus according to the statistic result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.