Battery cell with flexible wireless temperature sensor

• US 9,531,001 B2
• Filed: 06/25/2013
• Issued: 12/27/2016
• Est. Priority Date: 06/25/2012
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Kozinsky, Boris, Kozinsky, Inna, Christensen, John F.
• Primary Examiner(s): Fraser, Stewart
• Assistant Examiner(s): Zhang, Rachel L
• Application Number:
  US13/926,615
• Publication Number:
  US 20130344355A1
• Time in Patent Office: 1,281 Days
• Field of Search: 429/50, 429/90, 429/62
• US Class Current: 1/1
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 50/64 Constructional details of batteries specially adapted for electric vehicles
• CPC Class Codes: B60L 58/16 responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
• CPC Class Codes: B60L 58/18 of two or more battery modules
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: B60L 58/24 for controlling the temperature of batteries
• CPC Class Codes: B60L 58/25 by controlling the electric load
• CPC Class Codes: G01K 1/024 for remote indication
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: G06K 19/0717 the sensor being capable of sensing environmental conditions such as temperature history or pressure
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 50/581 in response to temperature
• CPC Class Codes: H02J 7/007194 of the battery
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A battery system in one embodiment includes a first battery cell including a shell encasing a positive electrode, a negative electrode, and a separator positioned between the positive electrode and the negative electrode, and at least one first wireless temperature sensor assembly encased within the first shell.

Claims

1. A battery system comprising:

a first battery cell including a first shell encasing a positive electrode, a negative electrode, and a separator positioned between the positive electrode and the negative electrode, wherein the first battery cell is configured to selectively power a load outside of the first shell; and

at least one first wireless temperature sensor assembly encased within the first shell and configured to obtain temperature readings of the first battery cell, wherein a first of the at least one first wireless temperature sensors is located within the negative electrode.

2. The battery system of claim 1, wherein a second of the at least one first wireless temperature sensors is located within the separator.

3. The battery system of claim 1, wherein:

the at least one first wireless temperature sensor assembly comprises a positive electrode wireless temperature sensor;

and

the positive wireless temperature sensor is located within the positive electrode.

4. The battery system of claim 1, wherein:

the at least one first wireless temperature sensor assembly comprises an RFID transponder.

5. The battery system of claim 4, wherein the at least one first wireless temperature sensor assembly further comprises a polymer packaging.

6. The battery system of claim 5, wherein the polymer packaging is less than about 50 microns thick.

7. The battery system of claim 6, wherein the at least one first wireless temperature sensor further comprises:

a thin flexible self-contained electronic circuit.

8. The battery system of claim 1, further comprising:

a second battery cell including a second shell encasing a positive electrode, a negative electrode, and a separator positioned between the positive electrode and the negative electrode;

at least one second wireless temperature sensor assembly encased within the second shell;

a first switch associated with the first battery cell and including a first position whereat the first battery cell is connected to a battery cell circuit, and a second position whereat the first battery cell is electrically isolated from the battery cell circuit; and

a second switch associated with the second battery cell and including a third position whereat the second battery cell is connected to the battery cell circuit, and a fourth position whereat the second battery cell is electrically isolated from the battery cell circuit.

9. The battery system of claim 8, further comprising:

a memory having command instructions stored therein; and

a processor operably connected to the at least one first wireless temperature sensor assembly, the at least one second wireless temperature sensor assembly, the first switch, the second switch, and the memory, the processor configured to execute the command instructions to

obtain first temperature data from the at least one first wireless temperature sensor assembly,

control the first switch based upon the first temperature data,

obtain second temperature data from the at least one second wireless temperature sensor assembly, and

control the second switch based upon the second temperature data.

10. The battery system of claim 9, wherein the processor is further configured to execute the command instructions to:

compare the first temperature data to a temperature threshold;

control the first switch to the second position if the first temperature data exceeds the temperature threshold;

compare the second temperature data to the temperature threshold; and

control the second switch to the fourth position if the second temperature data exceeds the temperature threshold.