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US 9,040,186 B2Granted
Method and device to measure temperature of a prismatic cell of automotive battery
AssigneeGM Global Technology Operations LLC
InventorsLeonid C. Lev, Nikolay Kondratyev
Life of this patent
Estimating the term…
Abstract
Apparatuses and methods of use are provided that include a battery cell comprising a flexible resistive thermal device. The resistive thermal device includes a flexible conductive circuit that is positioned on or adjacent to the surface of the battery cell. Resistance measured in the conductive circuit is correlated with a temperature of the battery cell thereby allowing control of a cooling system and/or the charging/discharging rates of the battery cell to be adjusted in response to temperature. Flexibility of the resistive thermal device also accommodates dimensional changes in the battery cell.
Claims21
A battery cell comprising:
- a prismatic battery cell including a pouch having a substantially planar exterior surface;
- a flexible resistive thermal device (RTD) for determining a temperature of the prismatic battery cell, the RTD disposed on the substantially planar exterior surface of the prismatic battery cell and comprising a conductive circuit and a plurality of terminals electrically connected to the conductive circuit, wherein the plurality of terminals of the RTD extend from a periphery of the substantially planar exterior surface of the prismatic battery cell;
- and
- a frame disposed about and adjacent the periphery of the substantially planar exterior surface of the prismatic battery cell, the frame independent of the substantially planar exterior surface of the prismatic battery cell, the frame particular to the prismatic battery cell, and the frame including a first portion and a second portion that are assembled to permit the plurality of terminals of the RTD to extend therethrough and beyond a periphery of the frame.
1 more element
A battery cell comprising:
- a prismatic battery cell including a pouch having a substantially planar exterior surface;
- a flexible resistive thermal device (RTD) for determining a temperature of the prismatic battery cell, the RTD disposed on the substantially planar exterior surface of the prismatic battery cell and comprising a conductive circuit and a plurality of terminals electrically connected to the conductive circuit, wherein the substantially planar exterior surface of the prismatic battery cell is substantially nonconductive, the conductive circuit is disposed directly on the substantially planar exterior surface of the prismatic battery cell, and the plurality of terminals is disposed on a tab of the prismatic battery cell substantially planar exterior surface extending from a remainder of the periphery of the substantially planar exterior surface of the prismatic battery cell;
- and
- a frame disposed about and adjacent the periphery of the substantially planar exterior surface of the prismatic battery cell, the frame independent of the substantially planar exterior surface of the prismatic battery cell, the frame particular to the prismatic battery cell, and the plurality of terminals of the RTD extends outside a periphery of the frame.
1 more element
A battery assembly comprising:
- a plurality of prismatic battery cells, each prismatic battery cell including a pouch having a substantially planar exterior surface, wherein at least one prismatic battery cell comprises a flexible RTD for determining a temperature of the prismatic battery cell, the RTD disposed on the substantially planar exterior surface of the at least one prismatic battery cell and comprising a conductive circuit and a plurality of terminals electrically connected to the conductive circuit, wherein the plurality of terminals of the RTD extend from a periphery of the substantially planar exterior surface of the at least one prismatic battery cell;
- a plurality of frames, each prismatic battery cell disposed within a separate frame, the frame disposed about and adjacent the periphery of the substantially planar exterior surface of the prismatic battery cell, and the frame including a first portion and a second portion that are assembled to permit the plurality of terminals of the RTD to extend therethrough and beyond a periphery of the frame;
- and
- a battery management system electrically connected to the plurality of terminals.
1 more element
Dependencies are inferred from the claim text.