US 2017/0288417 A1 · Fast Charging Apparatus and Method

Abstract

A method comprises setting a first termination voltage, a first charging current and a first termination current in a first charging step, wherein the first termination current is a fraction of the first charging current, passing a current from a power source to a battery through a charger, wherein the charger operates in a first constant current mode and the current is equal to the first charging current, monitoring a voltage across two terminals of the battery and configuring the charger to operate in a first constant voltage mode when the voltage across the two terminals of the battery is equal to the first termination voltage and monitoring the current in the first constant voltage mode and configuring the charger to operate in a second charging step when the current is equal to the first termination current.

Claims20

Dependent claims

A method comprising:

setting a first termination voltage, a first charging current and a first termination current in a first charging step, wherein the first termination current is a fraction of the first charging current;
passing a current from a power source to a battery through a charger, wherein the charger operates in a first constant current mode and the current is equal to the first charging current;
monitoring a voltage across two terminals of the battery and configuring the charger to operate in a first constant voltage mode when the voltage across the two terminals of the battery is equal to the first termination voltage;
and
monitoring the current in the first constant voltage mode and configuring the charger to operate in a second charging step when the current is equal to the first termination current.

2 more elements

A method comprising:

applying a first constant current mode to a battery through a charger;
in the first constant current mode, monitoring a voltage across two terminals of the battery and configuring the charger to operate in a first constant voltage mode when the voltage across the two terminals of the battery is equal to a first termination voltage;
in the first constant voltage mode, monitoring a current flowing through the battery and configuring the charger to operate in a second constant current mode when the current flowing through the battery is equal to a first termination current, wherein the first termination current is a fraction of the current flowing through the battery in the first constant current mode;
in the second constant current mode, monitoring the voltage across two terminals of the battery and configuring the charger to operate in a second constant voltage mode when the voltage across the two terminals of the battery is equal to a second termination voltage;
and
in the second constant voltage mode, monitoring the current flowing through the battery and configuring the charger to operate in a third constant current mode when the current flowing through the battery is equal to a second termination current, wherein the second termination current is a fraction of the current flowing through the battery in the second constant current mode.

3 more elements

Dependencies are inferred from the claim text.

Fast Charging Apparatus and Method

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Fast Charging Apparatus and Method

Life of this patent

Abstract

Claims20