BATTERY SENSOR DATA TRANSMISSION UNIT AND A METHOD FOR TRANSMITTING BATTERY SENSOR DATA

• US 20150017498A1
• Filed: 01/24/2013
• Published: 01/15/2015
• Est. Priority Date: 02/23/2012
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Henrici, Fabian, Wenzler, Axel, Schiemann, Werner, Schnitzer, Reiner, Elbracht, Berthold
• Granted Patent: US 9,720,048 B2
• Time in Patent Office: Days
• US Class Current: 429/90
• CPC Class Codes: G01R 31/006 on road vehicles, e.g. automobiles or trucks testing of ignition installations peculiar to internal combustion engines F02P17/00
• CPC Class Codes: G01R 31/3644 Constructional arrangements
• CPC Class Codes: G01R 31/371 with remote indication, e.g. on external chargers
• 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 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 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H04B 2203/5445 Local network
• CPC Class Codes: H04B 2203/5458 Monitor sensor; Alarm systems
• CPC Class Codes: H04B 3/548 the power on the line being DC arrangements for feeding power H04L12/10; extracting feeding power from signals H04L25/02
• CPC Class Codes: H04Q 2209/84 Measuring functions
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery sensor data transmission unit is described as including a connection state ascertainment unit for ascertaining a series connection state in which a battery cell is connected in series to one other battery cell with the aid of a power transmission line and/or for determining a bypassing state in which at least one pole of the battery cell is decoupled from at least one other battery cell. Furthermore, the battery sensor data transmission unit includes a data transmission unit designed for outputting a sensor signal, which represents a physical variable in or at the battery cell, in the series connection state to an evaluation device using the power transmission line and/or outputting the sensor signal in the bypassing state to the evaluation device using a battery housing wall as the transmission medium.

Claims

1-10. -10. (canceled)

11. A battery sensor data transmission unit, comprising:

a connection state ascertainment unit for at least one of;

ascertaining a series connection state in which a battery cell is connected in series to another battery cell with the aid of a power supply line, and

determining a bypassing state in which at least one pole of the battery cell is decoupled from at least the other battery cell; and

a data transmission unit for at least one of;

outputting a sensor signal that represents a physical variable one of in and at the battery cell in the series connection state to an evaluation device using the power supply line, and

outputting the sensor signal in the bypassing state to the evaluation device using a battery housing wall as a transmission medium.

12. The battery sensor data transmission unit as recited in claim 11, wherein the connection state ascertainment unit determines the series connection state when poles of at least three battery cells are connected in series using the power supply line.

13. The battery sensor data transmission unit as recited in claim 11, wherein the connection state ascertainment unit determines one of the series connection state and the bypassing state by evaluating a position of a switch that carries out an electrical coupling of the pole of the battery cell to the power supply line.

14. The battery sensor data transmission unit as recited in claim 11, wherein the connection state ascertainment unit ascertains one of the series connection state and the bypassing state using a measuring result relating to at least one of a current flow, an energy flow, and a power flow via the power supply line.

15. The battery sensor data transmission unit as recited in claim 13, wherein the switch is activated using a control signal, and wherein the data transmission unit synchronizes one of an ascertainment and an output of the sensor signal with the control signal.

16. The battery sensor data transmission unit as recited in claim 15, wherein the control signal is a pulse-width modulated control signal.

17. The battery sensor data transmission unit as recited in claim 11, wherein the data transmission unit at least one of:

outputs the sensor signal in the series connection state to the evaluation device using the power supply line, and

outputs the sensor signal in the bypassing state to the evaluation device using the battery housing wall as the transmission medium.

18. The battery sensor data transmission unit as recited in claim 11, wherein the data transmission unit encodes the sensor signal in a sensor signal package unambiguously assignable to the battery cell.

19. A battery unit, comprising:

a battery cell assembly that includes at least two battery cells, the battery cells being connectable in series with the aid of a power supply line;

at least one sensor for providing a measured value that represents a physical variable one of in and at one of the battery cells; and

at least one battery sensor data transmission unit that includes;

a connection state ascertainment unit for at least one of;

ascertaining a series connection state in which one of the battery cells is connected in series to another of the battery cells with the aid of the power supply line, and

determining a bypassing state in which at least one pole of the battery cell is decoupled from at least the other battery cell; and

a data transmission unit for at least one of;

outputting a sensor signal that represents the physical variable in the series connection state to an evaluation device using the power supply line, and

outputting the sensor signal in the bypassing state to the evaluation device using a battery housing wall as a transmission medium.

20. A method for transmitting battery sensor data, comprising:

ascertaining at least one of;

a series connection state in which a battery cell is connected in series to another battery cell with the aid of a power supply line, and

a bypassing state in which a pole of the battery cell is decoupled from at least the other battery cell; and

outputting at least one of;

a sensor signal that represents a physical variable one of in and at the battery cell, in the series connection state to an evaluation device using the power supply line, and

the sensor signal in the bypassing state to the evaluation device using a battery housing wall as a transmission medium.

21. A computer program having program code for carrying out a method if the computer program is executed on one of a device, a battery sensor data transmission unit, and a data processing equipment, the method, comprising:

ascertaining at least one of;

a series connection state in which a battery cell is connected in series to another battery cell with the aid of a power supply line, and

a bypassing state in which a pole of the battery cell is decoupled from at least the other battery cell; and

outputting at least one of;

a sensor signal that represents a physical variable one of in and at the battery cell, in the series connection state to an evaluation device using the power supply line, and

the sensor signal in the bypassing state to the evaluation device using a battery housing wall as a transmission medium.