METHOD FOR STARTING A BATTERY MANAGEMENT SYSTEM

• US 20150127205A1
• Filed: 11/04/2014
• Published: 05/07/2015
• Est. Priority Date: 11/06/2013
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Brochhaus, Christoph
• Granted Patent: US 9,505,396 B2
• Time in Patent Office: Days
• US Class Current: 701/22
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2510/246 Temperature
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• 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: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• 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 method for starting a battery management system (1) is disclosed. The battery management system includes a central controller (2) and at least one battery module (4) with a sensor controller (14) and at least one cell sensor (16) which is assigned to at least one battery cell (8). The method includes determining configuration data of each battery module (4) by the central controller (2), which configuration data comprises at least the indication of the number of cell sensors (16) assigned to each battery module (4), transmitting the configuration data by the central controller (2) to each sensor controller (14) via a communication channel (5), checking the configuration data by the respective sensor controller (14), and initializing each battery module (4) on the basis of the configuration data by the respective sensor controller (14) after successful checking.

Claims

1. A method for starting a battery management system (1), which has a central controller (2) and at least one battery module (4) with a sensor controller (14) and at least one cell sensor (16) which is assigned to at least one battery cell (8), said method comprising:

a) determining configuration data of each battery module (4) by the central controller (2), which configuration data comprises at least the indication of the number of cell sensors (16) assigned to each battery module (4),

b) transmitting the configuration data by the central controller (2) to each sensor controller (14) via a communication channel (5),

c) checking the configuration data by the respective sensor controller (14), and

d) initializing each battery module (4) on the basis of the configuration data by the respective sensor controller (14) after successful checking in step c).

2. The method according to claim 1, characterized in that a bit length (34) of the configuration data transmitted in step b) is independent of the number of the cell sensors (16) assigned to the battery module (4).

3. The method according to claim 1, characterized in that the configuration data determined in step a) and transmitted in step b) of each battery module (4) comprises the indication of the number of battery cells (8) assigned to each cell sensor (16).

4. The method according to claim 1, characterized in that a checksum of the configuration data is determined by the central controller (2), in step b), the configuration data and the checksum are transmitted via the communication channel (5) and the checking of the configuration data by the respective sensor controller (14) in step c) comprises checking the checksum.

5. The method according to claim 1, characterized in that the determination of the configuration data of each battery module (4) by the central controller (2) in step a) is done by an evaluation of a memory content.

6. The method according to claim 1, characterized in that the determination of the configuration data of each battery module (4) by the central controller (2) in step a) takes place in an initialization phase.

7. A data structure (20) with configuration data of battery modules (4), wherein the data structure (20) is established by the performance of the method according to claim 1 by the central controller (2), and wherein the data structure (20) is read by a sensor controller (14).

8. A computer program residing on a non-transitory computer readable medium for performing the method according to claim 1, when the computer program is executed on a programmable computer device.

9. A battery management system (1) for performing the method according to claim 1, wherein the battery management system (1) has a central controller (2) and at least one battery module (4) with a sensor controller (14) and at least one cell sensor (16) which is assigned to at least one battery cell (8), said battery management system having

a) units for determination of configuration data of each battery module (4) by the central controller (2), which configuration data comprises at least the indication of the number of cell sensors (16) assigned to each battery module (4),

b) units for transmission of the configuration data by the central controller (2) to each sensor controller (14) by a communication channel (5),

c) units for checking the configuration data by the respective sensor controller (14), and

d) units for initialization of each battery module (4) on the basis of the configuration data by the respective sensor controller (14) after successful checking in step c).

10. A battery with a battery management system (1) according to claim 9, wherein the battery is connectable to a drive system of a motor vehicle.

11. A motor vehicle with a battery according to claim 10, wherein the battery is connected to a drive system of the motor vehicle.