US 9,853,333 B2 · Temperature sensor and method for detecting a temperature of a battery cell

Abstract

A temperature sensor is described for detecting a temperature of a battery cell. The temperature sensor has a first electrical conductor having a first end for connecting the first conductor to an element of the battery cell and having a second end for connecting the first conductor to a first input of a measuring device and a second electrical conductor having a first end for connecting the second conductor to the element of the battery cell and having a second end for connecting the second conductor to a second input of the measuring device.

Drawings

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Drawings

Claims15

Dependent claims

A temperature sensor for detecting a temperature of a battery cell, comprising:

a first electrical conductor having a first end for connecting the first conductor to an element of the battery cell, and having a second end for attaching the first conductor to a first input of a measuring device;
and
a second electrical conductor having a first end for connecting the second conductor to the element of the battery cell, and having a second end for attaching the second conductor to a second input of the measuring device;
wherein the first conductor is connected via the element in an electrically conductive manner to the second conductor,
wherein a voltage is present between the second end of the first conductor and the second end of the second conductor,
wherein the voltage represents the temperature and is detectable by the measuring device when the first end of the first conductor and the first end of the second conductor are connected to the element in an electrically conductive manner, and
wherein the element of the battery cell includes a battery terminal and a cell connector, wherein the battery terminal includes a first electrically conductive material and the cell connector includes a second electrically conductive material that is different from the first electrically conductive material, wherein the first end of the first conductor is connectable to the battery terminal, and wherein the first end of the second conductor is connectable to the cell connector, and
wherein the temperature is determined by determining a heat-conditioned voltage gradient between the battery terminal and the cell connector.

5 more elements

A battery cell, comprising:

a galvanic element;
and
a temperature sensor including:
a first electrical conductor having a first end for connecting the first conductor to an element of the battery cell, and having a second end for attaching the first conductor to a first input of a measuring device, and
a second electrical conductor having a first end for connecting the second conductor to the element of the battery cell, and having a second end for attaching the second conductor to a second input of the measuring device, wherein:
the first conductor is connected via the element in an electrically conductive manner to the second conductor,
a voltage is present between the second end of the first conductor and the second end of the second conductor,
the voltage represents the temperature and is detectable by the measuring device when the first end of the first conductor and the first end of the second conductor are connected to the element in an electrically conductive manner, and
the element is thermally coupled to the galvanic element;
wherein the element of the battery cell includes a battery terminal and a cell connector, wherein the battery terminal includes a first electrically conductive material and the cell connector includes a second electrically conductive material that is different from the first electrically conductive material, wherein the first end of the first conductor is connectable to the battery terminal, and wherein the first end of the second conductor is connectable to the cell connector, and
wherein the temperature is determined by determining a heat-conditioned voltage gradient between the battery terminal and the cell connector.

8 more elements

Dependencies are inferred from the claim text.

Description4,565 words

Summary2,041 words

#The present invention relates to a temperature sensor for detecting a temperature of a battery cell, to a battery cell as well as to a method for detecting a temperature of a battery cell.

#The temperature monitoring of battery cells in a battery module or a battery pack is involved with an important variable for the service life and the optimal operation, and also for the safety monitoring of lithium-ion cells.

#German Patent No. 20 2007 011 399 describes, for example, a battery monitoring system having a probe dipping into the battery acid of a battery cell, which has a temperature sensor.

Brief description of the drawings6 figures

#FIG. 1 shows a block diagram of a temperature sensor for recording a temperature of a battery cell, according to an exemplary embodiment of the present invention.

#FIG. 2 shows a flow chart of a method for detecting a temperature of a battery cell, according to an exemplary embodiment of the present invention.

#FIGS. 3a and 3b show representations of a battery terminal and a cell connector welded to it as a component of a temperature sensor according to an exemplary embodiment of the present invention.

Detailed description2,363 words

#In the subsequent description of preferred exemplary embodiments of the present invention, the same or similar reference numerals are used for the elements that are shown in the various figures and act similarly, a repeated description of these elements having been dispensed with.

#FIG. 1 shows a block diagram of a temperature sensor 100 for detecting a temperature of a battery cell, according to an exemplary embodiment of the present invention. The temperature sensor has a first electrical conductor 102 and a second electrical conductor 104. The first electrical conductor 102 has a first end 102a and an opposite second end 102b. The first end 102a of the first conductor 102 is provided for connecting first conductor 102 with an element 106 of the battery cell. The second end 102b of first conductor 102 is provided for connecting a first input 108a of a measuring device 108 to first conductor 102. The second electrical conductor 104 has a first end 104a and an opposite second end 104b. The first end 104a of the second conductor 104 is provided for connecting second conductor 104 with an element 106 of the battery cell. The second end 10b of second conductor 104 is provided for connecting a second input 108b of a measuring device 108 to second conductor 104.

#When first end 102a of first conductor 102 and first end 104a of second conductor 104 are connected in a electrically conductive manner to element 106, first conductor 102 is connected in an electrically conductive manner to second conductor 104. Then there is a detectable voltage present between the second end 102b of first conductor 102 and the second end 104b of the second conductor that is detectable by measuring device 108, which represents the temperature of element 106.

Facts

Application

14/389,491Filed 13 Feb 2013

Priority

DE 10 2012 205 30330 Mar 2012

Published

US 2015/0064526 A15 Mar 2015

Granted

26 Dec 2017

Term ends

23 Apr 2033

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 69 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification13 codes

G01K 7/08
Using thermoelectric elements, e.g. thermocouples: the object to be measured forming one of the thermoelectric materials, e.g. pointed type
G01K 13/00
Thermometers specially adapted for specific purposes
H01M 10/0525
Li-accumulators: rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 10/486
Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte:…

Timeline

30 Mar 2012Priority claimedDE 10 2012 205 303
13 Feb 2013Application filedUS 14/389,491
5 Mar 2015PublishedUS 2015/0064526 A1
23 Apr 2015Assigned to Robert Bosch GmbHassignment of assignor's interest
26 Dec 2017GrantedUS 9,853,333 B2
12 Oct 2026TodayWithin its term
23 Apr 2033Term endsEstimated, includes 69 days of adjustment

Temperature sensor and method for detecting a temperature of a battery cell

Life of this patent

Temperature sensor and method for detecting a temperature of a battery cell

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims15

Description4,565 words

Drawings

Classification13 codes

Life of this patent

Description4,565 words