Electrochemical energystorage device having a reservoir for an additive
AssigneeRobert Bosch GmbH
InventorsFlorian Wahl, Martin Holger Koenigsmann
Life of this patent
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Abstract
An electrochemical energy storage device includes at least one cell having at least one cathode, one anode, and one electrolyte which enables a current flow from the anode to the cathode. The electrochemical storage device is connected to a reservoir which contains a cover layer-forming additive.
Claims14
An electrochemical energy storage device system, comprising:
- an electrochemical energy storage device comprising at least one cell including at least one cathode, at least one anode, and at least one electrolyte, wherein the electrolyte enables a current flow from the anode to the cathode;
- a reservoir connected to the electrochemical energy storage device and containing a cover-layer-forming additive;
- a control unit for selectively starting or stopping an inflow of the additive into the at least one cell;
- wherein the control unit is adapted to control a metering of the cover layer-forming additive into the at least one cell at a predefined point in time;
- wherein the control unit is adapted to determine a predefined point in time for metering from a state of health of the electrochemical energy storage device;
- and
- wherein the control unit meters the cover layer-forming additive to restore stabilizing cover layers on the at least one cathode and the at least one anode.
A method for operating an electrochemical energy storage device including at least one cell having at least one cathode, one anode, and one electrolyte which enables a current flow from the anode to the cathode, comprising:
- metering a cover layer-forming additive into the at least one cell at a predefined point in time;
- wherein the predefined point in time for metering is determined from a state of health of the electrochemical energy storage device;
- and
- wherein the cover layer-forming additive is used to restore stabilizing cover layers on the at least one cathode and the at least one anode.
An electrochemical energy storage device system, comprising:
- an electrochemical energy storage device comprising at least one cell including at least one cathode, at least one anode, and at least one electrolyte, wherein the electrolyte enables a current flow from the anode to the cathode;
- a reservoir connected to the electrochemical energy storage device and containing a cover-layer-forming additive;
- a control unit for selectively starting or stopping an inflow of the additive into the at least one cell;
- wherein the control unit is adapted to control a metering of the cover layer-forming additive into the at least one cell at a predefined point in time;
- wherein the control unit is adapted to determine a predefined point in time for metering from an increase in an internal resistance of the electrochemical energy storage device;
- and
- wherein the control unit meters the cover layer-forming additive to restore stabilizing cover layers on the at least one cathode and the at least one anode.
A method for operating an electrochemical energy storage device including at least one cell having at least one cathode, one anode, and one electrolyte which enables a current flow from the anode to the cathode, comprising:
- metering a cover layer-forming additive into the at least one cell at a predefined point in time;
- wherein the predefined point in time for metering is determined from an increase in an internal resistance of the electrochemical energy storage device;
- and wherein the cover layer-forming additive is used to restore stabilizing cover layers on the at least one cathode and the at least one anode.
Dependencies are inferred from the claim text.