Test apparatus for checking a battery control device or a battery, and method for testing a battery control device or a battery

• US 10,551,804 B2
• Filed: 11/27/2015
• Issued: 02/04/2020
• Est. Priority Date: 12/17/2014
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Hoenig, Guenter, Mattes, Bernhard, Roth, Manuel, Thomas, Robert
• Primary Examiner(s): Aurora, Reena
• Application Number:
  US15/535,491
• Publication Number:
  US 20170351225A1
• Time in Patent Office: 1,530 Days
• Field of Search: 324425
• CPC Class Codes: G01R 31/367 Software therefor, e.g. for battery testing using modelling or look-up tables
• CPC Class Codes: G01R 31/396 Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
• CPC Class Codes: G01R 35/00 Testing or calibrating of apparatus covered by the other groups of this subclass
• CPC Class Codes: G05B 13/041 in which a variable is automatically adjusted to optimise the performance
• CPC Class Codes: H01M 10/4207 for several batteries or cells simultaneously or sequentially
• 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: Y02E 60/10 Energy storage using batteries

Abstract

The invention relates to a test apparatus for checking a battery control device or for checking a battery having at least one cell, comprising a battery simulator (18) for simulating a voltage of at least one cell of a simulated battery for specification on the battery control device, wherein the battery control device or the battery is connected to an evaluation module (14) via a rail designed as a central bus in order to process and check the voltage of a selected cell, wherein the selected cell of the battery simulator for the battery control device or the selected cell of the battery can be selected via a separation module (24). In this way, a test apparatus for checking a battery control device or for checking a battery can be provided, which has a simple construction and can check all of the cells of a simulated or actual battery in a simple manner.

Claims

1. A test apparatus for checking a battery control device or for checking a battery having at least one cell, comprising a battery simulator (18) for simulating a voltage of at least one cell of a simulated battery for specification of the battery control device, characterized in that the battery control device or the battery is connected to an evaluation module (14) via a rail designed as a central bus in order to process and check the voltage of a selected cell, wherein the selected cell of the battery simulator (18) for the battery control device or the selected cell of the battery is selected via an isolating module (24);

and wherein a voltage of a selected cell of the battery simulator or the battery is changed via a resistor network (16) having at least one controllable optical field effect transistor.

2. The test apparatus as claimed in claim 1, characterized in that the processing and checking by the evaluation module (14) is coordinated via a control module (26).

3. The test apparatus as claimed in claim 2, characterized in that the evaluation module (14) is connected to a temperature module (20) for detecting at least one temperature measured by the battery control device or a temperature of at least one cell of the battery.

4. The test apparatus as claimed in claim 1, characterized in that a value for a balancing current in the charging direction of the cell or in the discharging direction of the cell is specified via the evaluation module (14), wherein the evaluation module (14) controls the balancing current for each cell of the battery simulator (18) for the battery control device or for each cell of the battery, independently of an adjacent cell.

5. The test apparatus as claimed in claim 1, characterized in that the evaluation module (14) comprises a capacitor for the intermediate storage of a voltage for a balancing current.

6. The test apparatus as claimed in claim 1, characterized in that the battery simulator (18) has a matrix for assigning a supply voltage for the monitoring device of the battery control device.

7. The test apparatus as claimed in claim 1, characterized in that a specification of temperatures for selected cells as voltage or resistance values with feedback is generated by the evaluation module (14).

8. The test apparatus as claimed in claim 1, characterized in that a control module (26) comprises a communication unit for communication with an external operating element.

9. A method for testing a battery control device or for testing a battery in a test apparatus having a battery simulator (18) for simulating a voltage of at least one cell of a simulated battery for specification of the battery control device, wherein the battery control device or the battery is connected to an evaluation module (14) via a rail designed as a central bus in order to process and check the voltage of a selected cell, including the following steps of:

connecting the battery control device to the test apparatus or connecting a battery having at least one cell to the test apparatus; and

processing or checking the battery control device or the battery via the evaluation module (14) of the test apparatus;

wherein the selected cell of the battery simulator (18) for the battery control device or the selected cell of the battery is selected via an isolating module (24); and

wherein a voltage of a selected cell of the battery simulator or the battery is changed via a resistor network (16) having at least one controllable optical field effect transistor.

10. The method as claimed in claim 9, further comprising the following step of:

adjusting a balancing current for at least one selected cell of the battery simulator (18) or the battery, independently of an adjacent cell.