Patent ID: 9024588
Filing Date: 2015-05-05
Classification: G01N,G08B,H02J,Y02B

Abstract:
1. An emergency power supply device, comprising: an energy storage unit, wherein the emergency power supply device supplies emergency power to a direct voltage circuit, and wherein the direct voltage circuit comprises a first potential tap and a second potential tap, and wherein the energy storage unit comprises a plus pole and a minus pole, and wherein one of the plus pole and the minus pole is connected to a first potential tap via a first connection, and wherein an other of the plus pole and the minus pole is connected to the second potential tap via a second connection, and wherein at least one of the connections comprises a directional electric current meter, and wherein at least one of the connections comprises an interrupter, and wherein the directional electric current meter is configured to measure a flow of charging current, and wherein the interrupter is configured to prevent a flow of charging current, and wherein the interrupter is configured to be controlled as a function of flow of the charging current that has been measured and whereby a connection between the energy storage unit and the direct voltage circuit in which a directional electric current meter is not provided has an additional decoupling component that prevents a flow of charging current of the energy storage unit.