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Portable Power Bank

  • US 20150288219A1
  • Filed: 07/01/2014
  • Published: 10/08/2015
  • Est. Priority Date: 04/03/2014
  • Status: Abandoned Application
First Claim
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1. A portable power bank comprising:

  • a battery pack, wherein the battery pack comprises at least two lithium-ion cells electrically connected in series;

    a first control module, electrically connected to a first terminal and a second terminal of the battery pack, for converting a charging current to a DC input voltage in a first pre-determined voltage range and supplying the DC input voltage to the battery pack, wherein the battery pack stores the DC input voltage as a battery power, and wherein the first control module includes;

    a first microcontroller;

    a first boost transformer electrically connected to the first microcontroller; and

    a first buck transformer electrically connected to the first microcontroller; and

    a second control module, electrically connected to the first terminal and the second terminal of the battery pack, for converting the battery power being outputted from the battery pack to a DC output voltage and supplying the DC output voltage to an external device, wherein the DC output voltage is a constant current in a second pre-determined voltage range, and wherein the second control module includes;

    a second microcontroller;

    a second boost transformer electrically connected to the second microcontroller; and

    a second buck transformer electrically connected to the second microcontroller.

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