US 10,097,017 B2 · Systems and methods for bidirectional two-port battery charging with boost functionality

Abstract

The disclosed embodiments provide a charging system for a portable electronic device. The charging system includes a first bidirectional switching converter connected to a first power port of the portable electronic device, a low-voltage subsystem in the portable electronic device, and a high-voltage subsystem in the portable electronic device and a second bidirectional switching converter connected to a second power port of the portable electronic device, the low-voltage subsystem, and the high-voltage subsystem. The charging system also includes a control circuit that operates the first and second bidirectional switching converters to provide and receive power through the first and second power ports and convert an input voltage received through the first or second power port into a set of output voltages for charging an internal battery in the portable electronic device and powering the low-voltage subsystem and the high-voltage subsystem.

Claims27

Dependent claims

A charging system for a portable electronic device, comprising:

a first bidirectional switching converter connected to each of a first bidirectional power port of the portable electronic device, a low-voltage subsystem in the portable electronic device, and a high-voltage subsystem in the portable electronic device;
a second bidirectional switching converter connected to each of a second bidirectional power port of the portable electronic device, the low-voltage subsystem, and the high-voltage subsystem;
an internal battery connected to the low-voltage subsystem;
and
a control circuit configured to operate one of the first and second bidirectional switching converters to distribute power between the high-voltage subsystem, the low-voltage subsystem, the first and second bidirectional power ports and the internal battery.

2 more elements

A method for managing power use in a portable electronic device having first and second bidirectional power ports, first and second bidirectional power converters respectively coupled to the first and second bidirectional power ports, and a low voltage subsystem, a high voltage subsystem, and an internal battery coupled to each of the first and second bidirectional switching converters, the method comprising:

controlling the first and second bidirectional switching converters to distribute power among the low-voltage subsystem, the high-voltage subsystem, and the first and second bidirectional power ports responsive to a determination whether each of the first and second bidirectional power ports is coupled to an external power source, an external battery, or an external accessory and one or more voltages selected from a group consisting of:
a voltage of the external power source, a voltage of the external battery, a voltage of the low-voltage subsystem, a voltage of the high-voltage subsystem, and a voltage of the internal battery.

Dependencies are inferred from the claim text.

Systems and methods for bidirectional two-port battery charging with boost functionality

Life of this patent

Systems and methods for bidirectional two-port battery charging with boost functionality

Life of this patent

Abstract

Claims27