Charging And Discharging Cell Modules

WARNING: This page is about a different variant/trim than selected.

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Component overview - VAS 6910

1	> VAS 6910 - Module balancer
2	Cell module
3	> 9900 - PIWIS Tester 3

WARNING: Incorrect handling of high-voltage components

Electric shock
Risk of short circuit
Risk of fire
Risk of explosion
→ Only appropriately trained and authorized persons are permitted to work on high-voltage vehicles and components.

→ Required qualification: High voltage expert.

→ Observe national requirements and legislation for this work.

→ Always use insulated tools, e.g > VAS 6883 - Insulated tool set , when working on these components. Observe general warning notes for working on the high-voltage vehicle electrical system.

→ > 2X00IN GENERAL WARNING NOTES FOR WORKING ON THE HIGH-VOLTAGE VEHICLE ELECTRICAL SYSTEM

Information

Adapt for each new cell module! New cell modules have a state of charge of 30%.

Information

The PIWIS Tester instructions take precedence since the description may be different with later Tester releases.

The procedure described here has been structured in general terms. Different text or additional information may appear on the PIWIS Tester.

Information

During the test sequences, green tick marks indicate whether lines were connected correctly. However, these only light up as soon as both ends of the lines have been connected.

Information

The difference in voltage between the module and the existing modules can be max. 0.3 V.

> VAS 6910 - Module balancer and Tester set up.
Read and follow the instructions for the module balancer.
Switch on the Tester and select HV system under Measuring equipment.
Switch on module balancer.

Module balancing must now be performed.

4.1 Carry out self-test.
Follow the instructions on the Tester.
4.2 Perform safety test.
Follow the instructions on the Tester.
4.3 Insert cell module into the module balancer.
4.4 Check polarity of the cell module.

4.5 Select Charge/Discharge on the Tester.

Enter the necessary data.

Enter data for selecting the cell module: Module type (e.g. 4M0...), serial number (label on the cell module), setpoint voltage (read out of test log or measure voltage manually on the module).

Follow the instructions on the Tester.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Connecting measuring device

4.5.1 Connect red > VAS 6910/10-1 - connecting cable-1- to HV + for the cell module.
4.5.2 Connect red > VAS 6910/10-1 - connecting cable-1- to HV + for the > VAS 6910 - module balancer
4.5.3 Connect black > VAS 6910/10-2 - connecting cable-2- to HV - of the cell module.
4.5.4 Connect black > VAS 6910/10-2 - connecting cable-2- to HV - of the > VAS 6910 - module balancer
4.5.5 Connect cell monitoring cable (CAN) > VAS 6910/12A-3 - connecting line-4- with the > VAS 6910 - module balancer .
4.5.6 Connect electric plug connection -3- for the cell monitoring cable (CAN) > VAS 6910/12A-3 - connecting cable-4- to the module.

4.6 Once the cell module has been charged/discharged successfully, follow the instructions on the Tester.
4.7 Print the log and file it in the order folder.

Stop Module balancing.
Remove module balancer and Tester.