Method and device for identifying an increase in temperature in a plurality of electrochemical storage cells
OwnerStefan Butzmann, Jens Boehmeinventors
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Abstract
A method and a device for identifying an increase in temperature in a plurality of electrochemical storage cells. An electrical characteristic value of a series connection of PTC elements that are thermally coupled in each case to a storage cell is determined and an increase in temperature of a plurality of electrical storage cells is identified if a value that is obtained as a result of evaluating the electrical characteristic value achieves a predefined threshold value.
Claims18
A method for identifying an increase in temperature in a plurality of electrochemical storage cells (2) comprising the steps of
- determining (100) an electrical characteristic value of an electrical series connection of PTC elements (3) that are thermally coupled in each case to a storage cell, and
- identifying (200) an increase in temperature in one of the electrical storage cells (2) if a value that is obtained as a result of evaluating the electrical characteristic value achieves a predefined threshold value.
A device for identifying an increase in temperature in a plurality of electrochemical storage cells (2), the device comprising:
- an electrical series connection of a first plurality of PTC elements (2), and
- an evaluating unit (6) for determining an electrical characteristic value of the electrical series connection of PTC elements (3),
- wherein the evaluating unit (6)
- determines an electrical characteristic value of the electrical series connection of the PTC elements (2), and
- identifies an increase in temperature if a value that is obtained as a result of evaluating the electrical characteristic value of the PTC elements (3) achieves a predefined threshold value.
Dependencies are inferred from the claim text.