Warning system for monitoring a vehicle battery

• US 9,208,670 B2
• Filed: 12/03/2013
• Issued: 12/08/2015
• Est. Priority Date: 12/03/2012
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Original Assignee: Robert Bosch GmbH
• Inventors: Krieg, Berengar, Heyl, Andreas
• Primary Examiner(s): Mehmood, Jennifer
• Assistant Examiner(s): Mortell, John
• Application Number:
  US14/094,914
• Publication Number:
  US 20140152445A1
• Time in Patent Office: 735 Days
• Field of Search: 340/584
• US Class Current: 1/1
• CPC Class Codes: A62C 3/07 in vehicles, e.g. in road vehicles
• CPC Class Codes: A62C 3/16 in electrical installations, e.g. cableways
• CPC Class Codes: B60L 15/40 Adaptation of control equipment on vehicle for remote actuation from a stationary place devices along the route for controlling devices on rail vehicles B61L3/00; central rail-traffic control systems B61L27/00
• 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 2240/70 Interactions with external data bases, e.g. traffic centres
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/12 Recording operating variables ; Monitoring of operating variables
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/30 Constructional details of charging stations
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60Y 2400/214 by power from domestic supply, e.g. plug in supplies
• CPC Class Codes: G08B 17/00 Fire alarms; Alarms responsive to explosion
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y02T 90/167 : Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A warning system for detecting a battery fire in a battery of an electric or hybrid vehicle includes a battery management system. The electric or hybrid vehicle is parked at or in a building to carry out a battery charging operation. The battery management system is connected to a building network installed in the building during the charging operation either via a direct connection or via a wireless connection. The battery management system triggers or activates protective measures if a fire is detected.

Claims

1. A warning system for detecting an impermissible battery temperature in a battery of an electric or hybrid vehicle parked at or in a building for carrying out a battery charging operation, comprising:

a building network installed in the building, the building network including at least one activatable protective measure; and

a battery management system located within the vehicle and operably connected to the building network during the charging operation, the battery management system configured to determine the impermissible battery temperature and activate the at least one activatable protective measure.

2. The warning system according to claim 1, wherein the battery management system is configured to determine the impermissible battery temperature by measuring and checking the plausibility of battery characteristic variables.

3. The warning system according to claim 1, wherein the battery management system comprises temperature sensors and is configured to determine the impermissible battery temperature based upon a rise in a temperature of the battery above a temperature threshold.

4. The warning system according to claim 1, wherein the battery management system is operably connected to the building network through a charging cable.

5. The warning system according to claim 1, wherein the battery management system is operably connected to the building network through a WLAN connection, a radio connection, or a Bluetooth connection.

6. The warning system according to claim 1, wherein the at least activatable one protective measure comprises an extinguishing system connected to the building network and configured to be triggered via the building network.

7. The warning system according to claim 1, wherein the at least activatable one protective measure comprises a building alarm system configured to be triggered via the building network.

8. The warning system according to claim 1, wherein the building network is connected to an external notification office via an external connection.

9. The warning system according to claim 1, wherein the battery management system is configured to activate a vehicle alarm system of the electric or hybrid vehicle if the operable connection to the building network is interrupted.

10. The warning system according to claim 1, wherein an alarm system in the electric vehicle is activated via a vehicle-external control device assigned to the building charging connection.

11. The warning system according to claim 1, further comprising an additional vehicle-internal monitoring unit configured to detect when a critical temperature threshold is exceeded when the battery management system is switched off and activate the at least one activatable protective measure.

12. The warning system according to claim 11, wherein the additional monitoring unit comprises at least one temperature sensor and an evaluation unit provided either at a charging station or on the electric vehicle.

13. The warning system according to claim 1, wherein the building network comprises one or more of at least one smoke sensor and at least one gas sensor.

14. The warning system according to claim 2, wherein the battery characteristic variables include one or more of voltage, temperature, and current.

15. The warning system according to claim 8, wherein the external notification office is a fire station or the German agency for technical relief.