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

Claim 0:
1. A method (100) for operating an electrical energy storage unit (1), having an electrical energy storage module (18), a switching unit (4), and a first and second connection (5, 7), the method (100) comprising the following temporally successive method steps:
evaluating, in a first method step (101), a signal from a sensor of the electrical energy storage unit (1),
identifying, in a second method step (102), a critical state of the electrical energy storage unit (1), and
interrupting, in a third method step (103), an electrically conductive connection between the electrical energy storage module (18) and the first and second connection (5, 7) in a charging direction by way of the switching unit (4), while at the same time maintaining the electrically conductive connection between the electrical energy storage module (18) and the first and second connection (5, 7) in a discharging direction,
wherein the sensor is at least one selected from the group consisting of a cell voltage sensor (16), a temperature sensor (15), a current sensor (14), and an output voltage sensor (6), 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).