US 12,257,920 B2
AC charging station for charging electric vehicles with phase change
Johannes Brombach, Berlin (DE); Christian Strafiel, Aurich (DE); and Alfred Beekmann, Wiesmoor (DE)
Assigned to Wobben Properties GmbH, Aurich (DE)
Appl. No. 17/436,340
Filed by Wobben Properties GmbH, Aurich (DE)
PCT Filed Mar. 4, 2020, PCT No. PCT/EP2020/055700
§ 371(c)(1), (2) Date Sep. 3, 2021,
PCT Pub. No. WO2020/178341, PCT Pub. Date Sep. 10, 2020.
Claims priority of application No. 10 2019 105 661.6 (DE), filed on Mar. 6, 2019.
Prior Publication US 2022/0185141 A1, Jun. 16, 2022
Int. Cl. B60L 53/67 (2019.01); B60L 53/10 (2019.01); B60L 53/63 (2019.01); H02J 3/26 (2006.01)
CPC B60L 53/67 (2019.02) [B60L 53/11 (2019.02); H02J 3/26 (2013.01); B60L 53/63 (2019.02)] 17 Claims
OG exemplary drawing
 
1. A charging station for charging electric vehicles, comprising:
a plurality of alternating current (AC) charging terminals, each AC charging terminal of the plurality of AC charging terminals being configured to charge an electric vehicle using an alternating current, and each AC charging terminal of the plurality of AC charging terminals being coupled to a three-phase power supply via a phase-change switch of a plurality of phase-change switches for supplying the AC charging terminal with three-phase electric current, wherein:
the three-phase power supply has three supply lines for respectively providing three voltage phases,
each AC charging terminal of the plurality of AC charging terminals has three connection lines for respectively coupling the AC charging terminal to the three supply lines and for respectively applying the three voltage phases to the three connection lines, and
each phase-change switch of the plurality of phase-change switches is configured to change a connection assignment between the three supply lines and the three connection lines; and
a controller configured to:
sort the plurality of AC charging terminals according to present current consumption of the plurality of AC charging terminals; and
control the plurality of phase-change switches depending on an order of the sorting of the plurality of AC charging terminals according to the present current consumption of the plurality of AC charging terminals, to minimize a phase imbalance of the three supply lines.