BATTERY SENSOR

• US 20130181720A1
• Filed: 01/14/2013
• Published: 07/18/2013
• Est. Priority Date: 01/13/2012
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Bremmer, Marcus
• Application Number:
  US13/740,424
• Publication Number:
  US 20130181720A1
• Time in Patent Office: Days
• US Class Current: 324/426
• CPC Class Codes: G01R 1/203 Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts resistors in general H01C; microwave or radiowave terminations H01P1/26; coupling devices H01R
• CPC Class Codes: G01R 19/0092 measuring current only all subgroups of G01R19/00 take precedence
• CPC Class Codes: G01R 31/3644 Constructional arrangements
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC

Abstract

A battery sensor for determining at least one operational parameter of a battery, wherein the battery sensor comprises at least one transistor having controllable resistance, which is designed to determine the at least one operational parameter.

Claims

1. A battery sensor for determining at least one operational parameter of a battery, wherein the battery sensor comprises at least one transistor having controllable resistance, which is designed to determine the at least one operational parameter.

2. The battery sensor according to claim 1, which is designed to detect an operational state of the battery.

3. The battery sensor according to claim 1, which is designed to determine the at least one operational parameter of a battery for electrical energy of a motor vehicle.

4. The battery sensor according to claim 1, in which the at least one transistor is designed as a power MOSFET.

5. The battery sensor according to claim 1, which comprises an evaluation, control and regulating device.

6. The battery sensor according to claim 1, which comprises a plurality of transistors connected to each other in parallel.

7. The battery sensor according to claim 1, which comprises a plurality of transistors connected to each other in series.

8. A method for determining at least one operational parameter of a battery , in which the at least one operational parameter is determined with a battery sensor which comprises at least one transistor having a controllable resistance, with which the at least one operational parameter is determined.

9. The method according to claim 8, in which a value of the resistance of the at least one transistor is variably adjusted.

10. The method according to claim 8, in which a current flowing through the battery is measured as the at least one operational parameter, wherein a level of a resistance of the at least one transistor is adapted to a level of the current to be measured.

11. The method according to claim 8, in which a limitation of the charging current for the battery is effected.

12. The m according to claim 8, in which an online calibration is performed.