Method and device for increasing the safety during the use of battery systems

• US 10,522,878 B2
• Filed: 02/11/2015
• Issued: 12/31/2019
• Est. Priority Date: 04/04/2014
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Wolff, Hans-Joerg, Fink, Holger, Partes, Hans
• Primary Examiner(s): Jimenez, Anthony R
• Application Number:
  US15/300,888
• Publication Number:
  US 20170033409A1
• Time in Patent Office: 1,784 Days
• Field of Search: 429 50
• 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 3/12 Recording operating variables ; Monitoring of operating variables
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: G01R 31/36 Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 2010/4271 Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
• CPC Class Codes: H01M 2010/4278 Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
• CPC Class Codes: H01M 2200/00 Safety devices for primary or secondary batteries
• CPC Class Codes: H01M 2200/10 Temperature sensitive devices
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H02J 7/0031 using battery or load disconnect circuits H02J9/002 takes precedence
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• 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

The invention relates to a method for operating a battery system (EB), preferably a lithium-ion battery system, containing at least one battery device, wherein in the case that a safe state of the at least one battery device is brought about from an irregular operating state of the at least one battery device, a current state of the at least one battery device is continuously checked and evaluated by means of at least one component (CSC) of the battery system and the bringing about of the safe state is performed in dependence on the current state of the at least one battery device or an environmental state of the at least one battery device, wherein in particular after the safe state of the at least one battery device has been brought about, hazard information is transmitted to a battery management system (BMS) by means of the at least one component (CSC) of the battery system (EB), wherein the hazard information in particular is hazard information about the current state of the at least one battery device and/or about the environmental state of the at least one battery device and/or about the fact that the safe state of the at least one battery device is present.

Claims

1. A method for operating a battery system (EB) containing at least one battery device, wherein in a case that a safe state of the at least one battery device is brought about from an irregular operating state of the at least one battery device, a current state of the at least one battery device is continually checked and evaluated by at least one component (CSC) of the battery system and the bringing about of the safe state is performed based on the current state of the at least one battery device or a state of an environment around the at least one battery device, wherein after the safe state of the at least one battery device has been brought about, hazard information is transmitted to a battery management system (BMS) by the at least one component (CSC) of the battery system (EB).

2. The method according to claim 1, wherein the application of a key and/or a smartcard and/or a radio signal and/or an input of a security code at the at least one component (CSC) of the battery system (EB) is required for a return of the at least one battery device to a regular operating state.

3. The method according to claim 1 wherein the method is used in automotive engineering and/or in energy technology.

4. The method according to claim 1, wherein the battery system (EB) is a lithium-ion battery system.

5. The method according to claim 1, wherein the hazard information is hazard information about the current state of the at least one battery device.

6. The method according to claim 1, wherein the hazard information is hazard information about the environmental state of the at least one battery device.

7. The method according to claim 1, wherein the hazard information is hazard information about the fact that the safe state of the at least one battery device is present.

8. The method according to claim 1, wherein the battery management system (BMS) monitors at least one other battery device and/or the at least one battery device and obtains the hazard information and test information acquired by sensors about the at least one other battery device and/or the at least one battery device.

9. The method according to claim 8, wherein the battery management system (BMS) brings about the safe state of the at least one other battery device based on the hazard information and/or the test information, wherein, for a return of the at least one other battery device to a regular operating state thereof, the application of a key and/or a smartcard and/or a radio signal and/or an input of a security code at the at least one component (CSC) of the battery system (EB) is provided;

or the battery management system (BMS) returns the at least one battery device to the regular operating state in dependence on the test information.

10. A control for a battery system (EB), wherein in the case that a safe state of the at least one battery device is brought about from an irregular operating state of the at least one battery device, a current state of the at least one battery device is continuously checked and evaluated by at least one component (CSC) of the battery system (EB) and the bringing about of the safe state is performed in dependence on the current state of the at least one battery device or a state of an environment around the at least one battery device, wherein the control returns the at least one battery device to a regular operating state upon carrying out the method according to claim 1 and/or by transmitting hazard information to a battery management system (BMS) by the at least one component (CSC) of the battery system (EB).

11. A battery system (EB), having a control according to claim 10.

12. The battery system (EB) according to claim 11, wherein said battery system contains the at least one battery device and/or at least one other battery device, and the at least one battery device and the at least one other battery device include a battery module or a battery cell (Z).

13. The control according to claim 10, wherein the control is applied in automotive engineering.

14. The battery system (EB) according to claim 11, wherein the battery system (EB) is applied in energy technology.

15. The battery system (EB) according to claim 11, wherein the battery system (EB) is applied in automotive engineering.

16. The control according to claim 10, wherein the control is applied in energy technology.