Patent ID: 11865925
Assignee: ROBERT BOSCH GMBH
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 3:
4. An electrical energy storage unit (1), wherein the electrical energy storage unit (1) has an electrical energy storage module (18), a switching unit (4) and a first and second connection (5, 7), and is configured to
evaluate a signal from a sensor of the electrical energy storage unit (1),
identify a critical state of the electrical energy storage unit (1), and
interrupt an electrically conductive connection between an electrical energy storage module (18) and a first and a second connection (5, 7) in a charging direction by way of a switching unit (4), while at the same time maintaining an electrically conductive connection between the electrical energy storage module (18) and the first and second connection (5, 7) in a discharging direction,
wherein the electrical energy storage unit (1) is further configured to simultaneously interrupt an electrically conductive connection between the electrical energy storage module (18) and the first and second connection (5, 7) in the charging direction and to connect it in the discharging direction by way of the switching unit (4),
wherein the electrical energy storage unit (1) includes a cell voltage sensor (16) and a current sensor (14), and
wherein, in the event of failure of the cell voltage sensor (16), the electrical energy storage unit (1) is operated in the discharging direction and the electrical energy storage unit (1) is monitored by the current sensor (14).