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Method and device for fast battery charging using a universal high power input source

A universal serial bus, high-voltage technology, applied in battery circuit devices, battery data exchange, battery load switching, etc., can solve problems that prevent proper device operation and minimize charging time

Active Publication Date: 2018-08-28
TEXAS INSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for fast battery charging, the ongoing problem is how to deliver high input power to the device while maintaining universal charging capability
However, a mismatch between the USB charging source or charging adapter and the charging device can prevent proper device operation and / or the ability to minimize charging time
The USB-PD standard provides a communication interface where the device modulates a high-frequency signal on the VBUS power line to allow communication with a USB adapter, but this approach requires filter circuits to demodulate the control signals and limits the availability of mobile phones and other cost-sensitive application

Method used

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  • Method and device for fast battery charging using a universal high power input source
  • Method and device for fast battery charging using a universal high power input source
  • Method and device for fast battery charging using a universal high power input source

Examples

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Embodiment Construction

[0013] refer to figure 1 , the USB charging system 100 includes an electronic device 110 connected via a USB cable 130 and a high voltage USB charger device or USB high voltage (HV) adapter 140 for charging the device 110 using power delivered from the adapter 140 via the USB cable 130 Power or charge. Device 110 may be any electronic device with load 118 , such as a laptop computer, tablet computer, or mobile phone, that can receive electrical power from adapter 140 via USB cable 130 . Adapter 140 may be a dedicated charging device, a desktop computer, or any other device that has a power source 142 and a USB connector 170 for providing electrical power to connected device 110 via USB cable 130 . The electronic device 110 includes a USB connector 120, a load 118, a high voltage charger 112 with a transmit circuit 116, and a processor 119 with associated electronic memory (not shown).

[0014] Device USB connector 120 is adapted to receive a connector 132 (such as a plug or ...

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Abstract

In the depicted example, it is detected that the voltage adapter (140) is connected to the electronic device (110) via the USB cable (130). A non-zero predetermined current is selectively sourced or sunk into or from one of the first data signal conductor (DP) and the second data signal conductor (DN) while providing a non-zero voltage to the other of the first and second data signal conductors (DP, DN) to configure the voltage adapter (140) to operate at a higher than nominal voltage via the first and second power conductors (VBUS, GND) A certain voltage level of 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000-0000. The voltage adapter (140) selectively adjusts the charging power to one of a second specific voltage level and a default voltage level. The voltage adapter (140) automatically adjusts the charging power to the default voltage level in response to the voltage adapter (140) being disconnected from the electronic device (110).

Description

technical field [0001] The present invention relates generally to electronic devices, and in particular to methods and apparatus for fast battery charging utilizing a general purpose high power input source. Background technique [0002] Universal Serial Bus (USB) ports are found on many portable devices such as laptop computers, tablet computers, mobile phones, and MP3 players, and are also available on desktop computers and automotive dashboard consoles (USB) port to provide interconnection for serial communication between devices. The USB standard provides charging capabilities by which a mobile phone or other portable device can operate using power supplied to the device through a USB cable. This power feature of the USB system also advantageously allows battery powered devices to be charged using power provided from a connected USB compliant device. For example, a dedicated charging device can be used under multiple USB ports to charge various portable devices even th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCG06F1/266G06F1/263H02J2207/40H02J7/00034H02J7/007H02J7/0068H02J7/00
Inventor S·B·S·王Q·M·李瑾荣·钱J·L·布里顿
Owner TEXAS INSTR INC