Datasheet

Creating Golden GG File from the Engineering Perfect Battery Pack

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7. Connect the pack to the EV software, go to the data flash screen, and ensure that Update Status is

0x06.

8. The battery pack is now Engineering Perfect.

I.2 Creating Golden GG File from the Engineering Perfect Battery Pack

Create a GG file with all of the data from the Engineering Perfect battery pack to create the Golden Image

File. The purpose of this GG file is to get all the non-reserved data saved to install it back into the module

after the battery pack is put back into the original state with a new SENC file (see Section I.3). Also,

change usage data to the original values so all production battery packs do not report that they have been

used. Use bqEASY to configure the parameters. Alternatively, use the procedures below.

1. Ensure that the Engineering Perfect battery pack is still connected to the EV2x00 and that the EV

software for the applicable device is open.

2. Go to the Data Flash screen in the EV software and click Read All.

3. Select the File pulldown menu, click Export, and chose a (*.gg) file name for saving the pre-learned

defaults (example: optimized.gg).

4. In a text editor such as Notepad, open the saved GG file. Change the value of Update Status from 06

to 02, which indicates that the parameters are learned but the Impedance Track feature is disabled (as

should be the case for a new pack prior to calibration).

Figure 16. Cycle Count Modification in GG file using Notepad

5. Reset the Cycle Count field to "0," as shown in Figure 16.

6. Save the file. Use this file as detailed below.

I.3 Installing the Original SENC File with Correct Chemistry Support

It is assumed that the proper chemistry-supported SENC file has been determined for this application

during the Engineering and Development Phase of this project. For most applications (LiCoO2/graphitized

carbon chemistry), the default SENC file for the applicable device (ex: bq20z80, bq20z90, or bq20z70) is

used. For more information on multi-chemistry support, refer to the Multi-Chemistry Support application

note: Support of Multiple Li-Ion Chemistries w/Impedance Track(TM) Gas Gauge .

The following instructions explain how to install the original chemistry-supported SENC file into the

Engineering Perfect battery pack. Do not worry about losing all the static data from this pack, because it

was stored, as detailed in the previous chapter.

1. Go to the product folder for the device in use in this application.

Some Examples:

(a) For the bq20z70: go to bq20z70 Tools and Software Section

(b) For the bq20z80, go to bq20z80 Tools and Software Section

2. Click on the Multi-Chemistry Support Software zip file pertaining to the device being used:

Some Examples:

(a) For the bq20z70: go to bq20z70-V101 Multiple Li-Ion Chemistries Software

(b) For the bq20z80: go to bq20z80-V102 Multiple Li-Ion Chemistries Software

3. Download the applicable zip file and extract to a temporary directory. An example would be

C:\Temp\sluc058.zip.

4. Ensure that the Engineering Perfect battery pack is still connected to the EV2x00, and that the EV

Creating the Golden Image File Without bqEASY SLUU397A– February 2011– Revised May 2011

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