Portable Power Bank

• US 20150288219A1
• Filed: 07/01/2014
• Published: 10/08/2015
• Est. Priority Date: 04/03/2014
• Status: Abandoned Application

• Current Assignee: LausDeo Corporation
• Original Assignee: LausDeo Corporation
• Inventors: LIN, MING-CHIEH, YANG, CHUN-LIANG, CHANG, WEN-HSIANG, KUO, JUNG, HSU, MENG-KWEI
• Application Number:
  US14/321,767
• Publication Number:
  US 20150288219A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034
• CPC Class Codes: H02M 1/10 Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
• CPC Class Codes: H02M 3/1582 Buck-boost converters H02M3/1584 takes precedence

Abstract

The present invention relates to a portable power bank comprising a battery pack, a first control module and a second control module, wherein the battery pack further comprises at least two cells connected in series, and wherein the first control module and the second control module both electrically connected to a first terminal and a second terminal of the battery pack; the first controller is configured for regulating the DC input voltage for charging the battery pack and the second controller is configured for regulating the DC output voltage for charging an external device.

Claims

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.

2. The portable power bank according to claim 1, wherein the cell in the at least two lithium-ion cells is one selected from the group consisting of a LiFePO4 battery, a LiNiO2 battery, a Li(NiMnCo)O2 battery and a LiCoO2 battery.

3. The portable power bank according to claim 1, wherein each cell in the at least two lithium-ion cells provides a voltage in a range of 3.2 to 4.3 volts.

4. The portable power bank according to claim 1, wherein the first pre-determined voltage range is between 12 and 19 volts.

5. The portable power bank according to claim 1, wherein voltage of the charging current is in a range of 12 to 19 volts.

6. The portable power bank according to claim 1, wherein the second pre-determined voltage range is above 3 volts.

7. The portable power bank according to claim 1, wherein the DC output voltage is in a range of 5 to 19 volts.

8. The portable power bank according to claim 1, wherein the DC output voltage is in a range of 3 to 5 A.