Browse Publications Technical Papers 2016-01-1229
2016-04-05

Next Generation “Voltec” Charging System 2016-01-1229

The electric vehicle on-board charger (OBC) is responsible for converting AC grid energy to DC energy to charge the battery pack.
This paper describes the development of GM’s second generation OBC used in the 2016 Chevrolet Volt. The second generation OBC provides significant improvements in efficiency, size, and mass compared to the first generation. Reduced component count supports goals of improved reliability and lower cost. Complexity reduction of the hardware and diagnostic software was undertaken to eliminate potential failures.

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