News Column

Researchers Submit Patent Application, "Power Supply Apparatus and Method, and User Equipment", for Approval

March 5, 2014



By a News Reporter-Staff News Editor at Electronics Newsweekly -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventors WEI, Konggang (Shenzhen, CN); XIONG, Qiang (Shenzhen, CN); WANG, Yuanguo (Shenzhen, CN), filed on December 20, 2012, was made available online on February 20, 2014.

The patent's assignee is Huawei Device Co., Ltd.

News editors obtained the following quote from the background information supplied by the inventors: "In the design of mobile communication terminals in the prior art, shutdown voltages of batteries are mostly set to a value ranging from 3.3 V to 3.5 V. However, with the progress of a battery technology and application of a new material, a working voltage of a battery can be lower. In this way, more residual electricity exists in a low voltage range.

"In order to fully utilize the capacity of a battery in a low voltage range, generally, voltage boost needs to be performed when the battery is at a low voltage, so as to ensure normal work of devices in a circuit. At present, multiple switch devices, for example, metal-oxide-semiconductor field-effect transistors (Metal-Oxide-Semiconductor Field-Effect Transistors, MOSFETs), are generally required in a common voltage boost circuit to implement voltage boost and a bypass mode when the voltage boost is not required. Because a switch device has direct current impedance, large impedance is introduced into a working path, thereby reducing overall working efficiency of a system and deteriorating a loading capability of a battery."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "Embodiments of the present invention provide a power supply apparatus and method, and a user equipment, so that additional impedance can be reduced and working efficiency can be improved.

"In a first aspect, a power supply apparatus is provided and includes: a battery electric core, a switch device, a voltage boost circuit, a state detection circuit, and a logic control circuit, where the switch device is connected to a current path of the battery electric core; the voltage boost circuit is connected in parallel to the current path, and is configured to boost an output voltage of the battery electric core; the state detection circuit is configured to detect a state of the battery electric core and a state of the apparatus, and generate a state signal, where the state signal is used to indicate the state of the battery electric core and the state of the apparatus; and the logic control circuit is configured to receive the state signal from the state detection circuit, and control the switch device and the voltage boost circuit according to the state signal, when the battery electric core is in an abnormal charging state, control the switch device to turn off the current path, and when the voltage boost circuit is not required to work, control the switch device to turn on the current path.

"In combination with the first aspect, in a first possible implementation manner, the logic control circuit is specifically configured to, when the state signal indicates that the battery electric core is in an over-voltage state or when the state signal indicates that the battery electric core is in an over-current charging state, turn off the voltage boost circuit and control the switch device to turn off the current path.

"In combination with the first aspect, in a second possible implementation manner, the logic control circuit is specifically configured to, when the state signal indicates that the output voltage of the battery electric core is smaller than a voltage threshold and indicates that an output voltage of the apparatus is smaller than the voltage threshold, turn on the voltage boost circuit and control the switch device to turn off the current path.

"In combination with the first aspect, in a third possible implementation manner, the logic control circuit is specifically configured to, when the state signal indicates that the output voltage of the battery electric core is greater than or equal to a voltage threshold and indicates that an output voltage of the apparatus is greater than or equal to the voltage threshold, turn off the voltage boost circuit and control the switch device to turn on the current path.

"In combination with the first aspect, or the first possible implementation manner of the first aspect, or the second possible implementation manner of the first aspect, or the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the apparatus further includes: a driving circuit, which is connected to the switch device, where the driving circuit adopts a field-effect transistor push-pull structure; and the logic control circuit is specifically configured to control the switch device through the driving circuit.

"In combination with the first aspect, or the first possible implementation manner of the first aspect, or the second possible implementation manner of the first aspect, or the third possible implementation manner of the first aspect, or the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the apparatus further includes an isolation charging circuit, which is connected in parallel to the current path and the voltage boost circuit, and configured to charge the battery electric core and isolate the output voltage of the battery electric core from the output voltage of the apparatus; and the logic control circuit is further configured to control the isolation charging circuit according to the state signal.

"In combination with the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, the logic control circuit is specifically configured to, when the state signal indicates that the output voltage of the battery electric core is smaller than a voltage threshold and indicates that the output voltage of the apparatus is greater than or equal to the voltage threshold, turn on the isolation charging circuit, turn off the voltage boost circuit, and control the switch device to turn off the current path.

"In combination with the fifth possible implementation manner of the first aspect or the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner, the voltage boost circuit, the state detection circuit, the logic control circuit, and the isolation charging circuit are integrated in one chip.

"In combination with the first aspect, or the first possible implementation manner of the first aspect, or the second possible implementation manner of the first aspect, or the third possible implementation manner of the first aspect, or the fourth possible implementation manner of the first aspect, or the fifth possible implementation manner of the first aspect, or the sixth possible implementation manner of the first aspect, or the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner, the state detection circuit includes a first voltage detection circuit and a second voltage detection circuit, where the first voltage detection circuit is configured to detect the output voltage of the battery electric core and compare the output voltage of the battery electric core with a voltage threshold; and the second voltage detection circuit is configured to detect the output voltage of the apparatus and compare the output voltage of the apparatus with the voltage threshold.

"In a second aspect, a user equipment is provided and includes: a processor and the apparatus described in the first aspect, or in combination with the first aspect, the first possible implementation manner of the first aspect, the second possible implementation manner of the first aspect, the third possible implementation manner of the first aspect, the fourth possible implementation manner of the first aspect, the fifth possible implementation manner of the first aspect, the sixth possible implementation manner of the first aspect, the seventh possible implementation manner of the first aspect, or the eighth possible implementation manner of the first aspect, where the apparatus is configured to supply power to the processor.

"In a third aspect, a power supply method is provided and includes: detecting, by a state detection circuit, a state of a battery electric core and a state of a power supply apparatus, and generating a state signal, where the state signal is used to indicate the state of the battery electric core and the state of the apparatus; and receiving, by a logic control circuit, the state signal from the state detection circuit, and controlling a switch device and a voltage boost circuit according to the state signal, when the battery electric core is in an abnormal charging state, controlling the switch device to turn off a current path of the battery electric core, and when the voltage boost circuit is not required to work, controlling the switch device to turn on the current path, where the apparatus includes the state detection circuit, the battery electric core, the voltage boost circuit, the switch device, and the logic control circuit, where the switch device is connected in the current path, the voltage boost circuit is connected in parallel to the current path, and the voltage boost circuit is configured to boost an output voltage of the battery electric core.

"In combination with the third aspect, in a first possible implementation manner, when the state signal indicates that the battery electric core is in an over-voltage state or when the state signal indicates that the battery electric core is in an over-current charging state, the logic control circuit turns off the voltage boost circuit and controls the switch device to turn off the current path.

"In combination with the third aspect, in a second possible implementation manner, when the state signal indicates that the output voltage of the battery electric core is greater than or equal to a voltage threshold and indicates that an output voltage of the apparatus is greater than or equal to the voltage threshold, the logic control circuit turns off the voltage boost circuit and controls the switch device to turn on the current path.

"In the embodiments of the present invention, when the battery electric core is in an abnormal charging state, the logic control circuit can control the switch device to turn off the current path, and when the voltage boost circuit is not required to work, the logic control circuit can control the switch device to turn on the current path. Therefore, charging protection for the battery electric core and a bypass function for the voltage boost circuit can be implemented through control that is performed on the switch device by the logic control circuit, without through multiple switch devices. Therefore, the number of switch devices can be reduced, so that additional impedance can be reduced and working efficiency can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS

"To illustrate the technical solutions in the embodiments of the present invention more clearly, the accompanying drawings required for describing the embodiments of the present invention are described briefly in the following. Apparently, the accompanying drawings in the following description merely show some embodiments of the present invention, and persons of ordinary skill in the art may also derive other drawings from these accompanying drawings without creative efforts.

"FIG. 1 is a schematic block diagram of a power supply apparatus according to an embodiment of the present invention;

"FIG. 2 is a schematic block diagram of a power supply apparatus according to an embodiment of the present invention;

"FIG. 3 is a schematic block diagram of an example of a power supply apparatus according to an embodiment of the present invention;

"FIG. 4 is a schematic block diagram of a user equipment according to an embodiment of the present invention;

"FIG. 5 is a schematic flowchart of a power supply method according to an embodiment of the present invention; and

"FIG. 6 is a schematic flowchart of a process of a power supply method according to an embodiment of the present invention."

For additional information on this patent application, see: WEI, Konggang; XIONG, Qiang; WANG, Yuanguo. Power Supply Apparatus and Method, and User Equipment. Filed December 20, 2012 and posted February 20, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=4605&p=93&f=G&l=50&d=PG01&S1=20140213.PD.&OS=PD/20140213&RS=PD/20140213

Keywords for this news article include: Electronics, Semiconductor, Huawei Device Co. Ltd..

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


For more stories covering the world of technology, please see HispanicBusiness' Tech Channel



Source: Electronics Newsweekly


Story Tools