Patent ID: 7023216
Filing Date: 2006-04-04
Classification: B60K,B60L,B60W,B60Y,G01R,H01M,H02J,Y02E,Y02T

Abstract:
1. In an electric vehicle having an energy storage device, an indicator system comprising: a processing source to calculate a normalized amount of power available from the energy storage device, the normalized amount being calculated as a function of desired limits on operator use of power actually available from the energy source; an indicator to indicate the normalized amount of power available from the energy storage device; wherein the energy source is a battery which provides power for use in providing electric assist and the processing source calculates the normalized amount of power available from the battery as a normalized battery state of charge (SOC) such that the indicator indicates the normalized SOC; and wherein the normalized battery SOC is calculated based in part on a calculated battery SOC, a minimum battery SOC offset, and a maximum SOC offset.