Robert Boschgmbh

Thomas Barabas

Chrysanthos Tzivanopoulos

Johannes Swoboda

Jochen Weber

Peter Kohn

Joerg Schneider

Sabine Arnold

Mathis Wolf

Isaias Miguel Alejandro Santucho

A diagnostic circuit () for diagnosing a battery disconnect unit () for disconnecting a battery system () from an electrical system (). The battery disconnect unit () includes a first switching element (S) and a second switching element (S). A first connection of the first switching element (S) is connected to a first node point (), and a second connection of the first switching element (S) is connected to the first terminal (). A first connection of the second switching element (S) is connected to the first node point (), and a second connection of the second switching element (S) is connected to the second terminal (). The diagnostic circuit () includes a first voltage divider () and a second voltage divider ().

Diagnostic circuit for a battery disconnect unit, method for diagnosing a battery disconnect unit, battery disconnect unit

A voltage measurement method for an on-board power supply system () of a vehicle, wherein the on-board power supply system () comprises a battery pack () with a plurality of battery cells () and at least one sub-grid () which can be coupled to the battery pack () via contactors (SH+, SH−, SL+, SL−). According to the invention, the voltage measurement method comprises the following method steps: In an initial calibration mode with open contactors (SH+, SH−, SL+, SL−):

Voltage measurement method and operating method for a vehicle on-board power supply system

The invention relates to a method for operating an electric energy store (), to an electric energy store (), and to a device, having an electric energy storage module (), a switch unit (), and a first and second connection (). The method has the following steps which follow one another chronologically: in a first step, a signal of a sensor of the electric energy store () is evaluated; in a second step, a critical state of the electric energy store () is ascertained; in a third step, an electrically conductive connection between the electric energy storage module () and the first and second connection () is interrupted in the charge direction by means of the switch unit (), while simultaneously the electrically conductive connection between the electric energy storage module () and the first and second connection () remains connected in the discharge direction.

Method for operating an electric energy store, electric energy store, and device

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Stuttgart, Germany

Thomas Barabas