Electrical circuit arrangement for an energy storage system and method for operating said electrical circuit arrangement
AssigneeRobert Bosch GmbH
InventorsJochen Weber, Joerg Schneider, Peter Kohn, Sabine Arnold, Thomas Kaiser
Life of this patent
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Abstract
Electrical circuit arrangement for an energy storage system comprising a first electrochemical energy storage device and a second electrochemical energy storage device.
Claims10
An electrical circuit arrangement (100) for an energy storage system comprising a first electrochemical energy storage device and a second electrochemical energy storage device, the electrical circuit arrangement comprising:
- a circuit board (101) comprising at least one control unit (111);
- a first terminal (106) for a voltage supply to electrical components of a first region of the circuit board (101) by means of the first energy storage device;
- a second terminal (107) for a voltage supply to electrical components of a second region of the circuit board (101) by means of the second energy storage device, wherein an electrical connection (121) between the second terminal (107) and the control unit (111) comprises a filter circuit (114), a DC-DC converter (116) and a switching element (115), wherein the filter circuit (114) electrically connectable to the DC-DC converter (116) by means of the switching element (115), wherein the electrical components of the first region are electrically isolated from the electrical components of the second region, whereby the control unit (111) is supplied with a voltage from the second energy storage device independently of the first energy storage device.
A method for operating the electrical circuit arrangement (100) for safe operation of at least one control unit (111) of an energy storage system, which comprises a first electrochemical energy storage device and a second electrochemical energy storage device, in the event of a fault in the first electrochemical energy storage device, the method comprising the following steps:
- a) switching a switch (109) for electrically connecting a first electrochemical energy storage device, which is electrically connected to a first terminal (106), to electrical components, for the purpose of supplying a voltage, wherein the control unit (111) is isolated from the first energy storage device;
- b) switching a switch (115) for electrically connecting a second electrochemical energy storage device, which is electrically connected to a second terminal (107), to a DC-DC converter (116) for the purpose of supplying a voltage to electrical components in the event of a fault in the first electrochemical energy storage device, wherein the control unit (111) is supplied with a voltage from the second energy storage device independently of the first energy storage device.
Dependencies are inferred from the claim text.