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Anpec Electronics : Patent Issued for Compensation Circuit and Energy Storage Device (USPTO 9831702)

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12/07/2017 | 11:55pm CET

By a News Reporter-Staff News Editor at Electronics Newsweekly -- From Alexandria, Virginia, VerticalNews journalists report that a patent by the inventor Chen, Chih-Ning (Taipei, TW), filed on March 17, 2016, was published online on November 28, 2017.

The patent's assignee for patent number 9831702 is Anpec Electronics Corporation (Hsinchu, TW).

News editors obtained the following quote from the background information supplied by the inventors: "The instant disclosure relates to a compensation circuit; in particular, to a compensation circuit that can adjust the response time, and an energy storage device using the same.

"With the development of technology, the portable electric device has become an essential tool in our lives, such as mobile phones, tablets, music players or video players having a USB transmission interface.

"The power is consumed quickly for the portable electric device, so the user would usually have an energy storage device, such as a power bank, to charge the portable energy storage device. The energy storage devices generally have the OTG (On the Go) function. In other words, the energy storage device can be viewed as a peripheral equipment that receives energy from other devices, such as a computer. The energy storage device can also be a host device to charge the slave electric devices. In addition, recently, an energy storage device has come up, which can be charged by the outside electric energy and can charge the slave electric devices simultaneously.

"Usually, there would be a detection circuit and a compensation circuit in an energy storage device. The compensation circuit comprises a plurality of amplifiers, comparators, resistors and capacitors. The detection circuit comprises a plurality of sensing loops to detect the voltage and the current of the energy storage device. For example, the detection circuit can detect the input voltage and the input current generated by the outside electric energy, or the output voltage and the output current provided by the battery of the energy storage device. The compensation circuit is configured to provide the compensation to each sensing loop to respond with the load needed by the portable electric device.

"However, in the traditional compensation circuit, the resistance and the capacitance are both fixed, so the compensation circuit can only provide one compensation value. In other words, the response time of each sensing loop responding to the load change of the electric device is constant, wherein the response time refers to the time from the timing when the load of the portable electric device changes to the timing when the energy storage device correspondingly starts to support energy. Thus, the traditional compensation circuit cannot provide different compensation values with respect to the detecting result of each sensing loop, and the response time of the energy storage device cannot be shortened."

As a supplement to the background information on this patent, VerticalNews correspondents also obtained the inventor's summary information for this patent: "The instant disclosure provides a compensation circuit used in an energy storage device. The energy storage device is configured to charge an electric device. The compensation circuit comprises a first error amplifier, a first switching unit, a first RC network, a voltage recording module, a second switching unit and a logic control module. The first error amplifier has a first input end electrically connected to a detection circuit, wherein the detection circuit detects a plurality of sensing loops of the electric device. The first switching unit is electrically connected to an output end of the first error amplifier, the first input end of the first error amplifier and a voltage output end, to selectively make the output end of the first error amplifier, the first input end of the first error amplifier and the voltage output end connected. The first RC network is electrically connected to the first input end of the first error amplifier and the voltage output end, wherein the first RC network comprises a first capacitor. The resistance or the capacitance of the first RC network changes with different sensing loops to change a compensation value of the compensation circuit. The voltage recording module is electrically connected to the voltage output end, to provide a preset output voltage. The second switching unit is electrically connected between the voltage output end and the voltage recording module, to selectively make the voltage output end and the voltage recording module connected. The logic control module is electrically connected to the first switching unit, the second switching unit and the voltage recording module. The detection circuit outputs a detecting signal as the sensing loop changes, such that the logic control module controls the first switching unit to make the first input end of the first error amplifier and the output end of the first error amplifier connected and controls the second switching unit to make the voltage output end and the voltage recording module connected according to the detecting signal. The voltage recording module outputs the preset output voltage to the voltage output end to stabilize the voltage of the first capacitor. After receiving the detecting signal, the compensation circuit switches to a voltage regulation mode, and the voltage output by the first error amplifier is fed back to the first input end of the first error amplifier, such that the voltage difference between a first input voltage of the first input end and a first reference voltage received by a second input end of the first error amplifier is within a preset range.

"The instant disclosure further provides an energy storage device used to charge an electric device. The energy storage device comprises a detection circuit, an energy storage unit and a compensation circuit. The detection circuit detects a plurality of sensing loops and is used for determining different sensing loops. The energy storage unit is electrically connected to the detection circuit to store energy or provide energy. The compensation circuit is electrically connected to the detection circuit to provide a compensation value. The compensation circuit comprises a first error amplifier, a first switching unit, a first RC network, a voltage recording module, a second switching unit and a logic control module. The first error amplifier has a first input end electrically connected to the detection circuit. The first switching unit is electrically connected to an output end of the first error amplifier, the first input end of the first error amplifier and the voltage output end, to selectively make the output end of the first error amplifier, the first input end of the first error amplifier and the voltage output end connected. The first RC network is electrically connected to the first input end of the first error amplifier and the voltage output end, wherein the first RC network comprises a first capacitor. The resistance or the capacitance of the first RC network changes with different sensing loops to change a compensation value of the compensation circuit. The voltage recording module is electrically connected to the voltage output end to provide a preset output voltage. The second switching unit is electrically connected between the voltage output end and the voltage recording module, to selectively make the voltage output end and the voltage recording module connected. The logic control module is electrically connected to the first switching unit, the second switching unit and the voltage recording module. The detection circuit outputs a detecting signal as the sensing loop changes, such that the logic control module controls the first switching unit to make the first input end of the first error amplifier and the output end of the first error amplifier connected and controls the second switching unit to make the voltage output end and the voltage recording module connected according to the detecting signal. The voltage recording module outputs the preset output voltage to the voltage output end to stabilize the voltage of the first capacitor. After receiving the detecting signal, the compensation circuit switches to a voltage regulation mode, and the voltage output by the first error amplifier is fed back to the first input end of the first error amplifier, such that the voltage difference between a first input voltage of the first input end and a first reference voltage received by a second input end of the first error amplifier is within a preset range.

"To sum up, the compensation circuit and the energy storage device using the same provided by the instant disclosure can provide different compensation values via changing the resistance or the capacitance in the compensation circuit. The response time of the energy storage device can be shortened because of the change of the compensation value, such that the loading change of the electric device can be supported quickly.

"For further understanding of the instant disclosure, reference is made to the following detailed description illustrating the embodiments and embodiments of the instant disclosure. The description is only for illustrating the instant the disclosure, not for limiting the scope of the claim."

For additional information on this patent, see: Chen, Chih-Ning. Compensation Circuit and Energy Storage Device. U.S. Patent Number 9831702, filed March 17, 2016, and published online on November 28, 2017. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9831702.PN.&OS=PN/9831702RS=PN/9831702

Keywords for this news article include: Electric Energy, Anpec Electronics Corporation.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2017, NewsRx LLC

(c) 2017 NewsRx LLC, source Technology Newsletters

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