DETERIORATION DETERMINATION SYSTEM FOR BATTERY FOR ELECTRIC VEHICLE
First Claim
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1. An electric powered vehicle having a battery and a propulsion device driven by an electric motor powered by said battery, said electric motor being controlled by an ECU and having an armature coil and a field coil, a current sensor, a system for determining the deterioration of said battery by determining the internal resistance of said battery based upon an amount detected by said current sensor.
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Abstract
An electric motor driven battery powered vehicle and method for determining the battery condition therefore for replacement purposes wherein current flow through a coil of the motor is measured and internal resistance of the battery is determined by the current flow to avoid unnecessary replacement based only on time of usage.
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Citations
10 Claims
- 1. An electric powered vehicle having a battery and a propulsion device driven by an electric motor powered by said battery, said electric motor being controlled by an ECU and having an armature coil and a field coil, a current sensor, a system for determining the deterioration of said battery by determining the internal resistance of said battery based upon an amount detected by said current sensor.
- 6. A method for determining deterioration of the powering battery of electric powered vehicle having propulsion device driven by an electric motor powered by the battery, the electric motor being controlled by an ECU and having an armature coil and a field coil, sensing the current flow through at least one of said coils, determining the deterioration of said battery by determining the internal resistance of the battery based upon the detected current amount.
Specification