Integrated monitoring capacity of a power bank battery and devices charged therewith

Patent metadata

Field	Value
Publication number	US-2024288506-A1
Application number	US-202418654551-A
Country	US
Kind code	A1
Filing date	May 3, 2024
Priority date	Mar 11, 2021
Publication date	Aug 29, 2024
Grant date	—

Abstract

A portable power bank including a rechargeable battery and/or a remote server may detect loss of capacity in the power bank battery. The power bank and/or remote server determines a nominal capacity of the power bank, and an actual capacity of the power bank, the actual capacity being less than the nominal capacity. The power bank and/or remote server compares the actual capacity to the nominal capacity to determine a health value of the power bank battery. When the power bank battery health value is at or below a threshold value, the power bank and/or remote server transmits an indication of the health value.

First claim

What is claimed is:

1 . A computer-implemented method comprising:
determining, via one or more processors of a power bank, a nominal capacity of a battery of the power bank, the power bank battery being configured to supply electric charge to a rechargeable device external to the power bank via an electrical connection between the power bank battery and a rechargeable computing device battery; obtaining, via the one or more processors, a measurement of a present capacity of the power bank battery; comparing, via the one or more processors, the present capacity to the nominal capacity to determine a health value of the power bank battery; and transmitting, via one or more transceivers of the power bank, to a remote server, an indication of the health value of the power bank battery when the health value is less than or equal to a threshold value.

2 . The method of claim 1 , wherein determining the present capacity of the power bank battery comprises:
monitoring, via one or more processors, an inflowing electric current to the power bank battery during a time interval corresponding to a charging of the power bank battery; and calculating, via one or more processors, an input charge capacity of the power bank battery based upon the monitored inflowing electric current over the time interval; and determining, via one or more processors, the present capacity based upon the calculated input charge capacity.

3 . The method of claim 1 , wherein determining the present capacity of the power bank battery comprises:
monitoring, via one or more processors, an outflowing electric current from the power bank battery during a time interval corresponding to a supply of electric charge from the power bank battery to the rechargeable device; calculating, via one or more processors, an output charge capacity of the power bank battery based upon the monitored outflowing electric current over the time interval; and determining, via one or more processors, the present capacity based upon the calculated output charge capacity.

4 . The method of claim 1 , wherein determining the present capacity of the power bank battery comprises:
monitoring, via one or more processors, an inflowing electric current to the power bank battery and a voltage of the power bank battery during a time interval corresponding to a charging of the power bank battery; and calculating, via one or more processors, an input energy capacity of the power bank battery based upon the monitored inflowing electric current and the voltage over the time interval; and determining, via one or more processors, the present capacity based upon the calculated input energy capacity.

5 . The method of claim 1 , wherein determining the present capacity of the power bank battery comprises:
monitoring, via one or more processors, an outflowing electric current from the power bank battery and a voltage of the power bank battery during a time interval corresponding to a supply of electric charge from the power bank battery to the rechargeable device; calculating, via one or more processors, an output energy capacity of the power bank battery based upon the monitored outflowing electric current and the voltage over the time interval; and determining, via one or more processors, the present capacity based upon the calculated output energy capacity.

6 . The method of claim 1 , wherein transmitting the health value to the remote server comprises:
transmitting, via a wireless connection between the one or more transceivers and the remote server, the health value.

7 . The method of claim 1 , wherein transmitting the health value to the remote server comprises:
transmitting, via a wireless connection between the one or more transceivers and the rechargeable device, the health value, wherein transmitting the health value to the rechargeable device causes the rechargeable device to relay the health value to the remote server.

8 . The method of claim 1 , wherein the electrical connection between the power bank battery and the rechargeable device battery comprises a wireless electrical connection between the power bank device and the rechargeable device

9 . The method of claim 1 , wherein the electrical connection between the power bank battery and the rechargeable device battery comprises a wired electrical connection between the power bank and the rechargeable device.

10 . The method of claim 1 , wherein comparing the present capacity of the power bank battery to the nominal capacity of the power bank battery comprises:
obtaining, via one or more processors, a temperature value from a temperature sensor configured to sense a temperature of the power bank device; based on the temperature value, obtaining, from one or more lookup tables associating temperature values with respective temperature correction factors, the respective temperature correction factor; generating, via one or more processors, an adjusted present capacity by applying the temperature correction factor to the present capacity of the power bank battery, and comparing, via one or more processors, the adjusted present capacity to the nominal capacity of the power bank battery.

Assignees

• Duracell Us Operations Inc

Inventors

• Bourilkov Jordan Todorov
• Coronado Hortal Sergio
• Restrepo Francisco Jose
• Rotondo John

Classifications

• H02J7/84

  Control of state of health [SOH] · CPC title

• H02J7/82

  Control of state of charge [SOC] · CPC title

• H02J7/685 Primary

  using connection detecting circuits (H02J7/68 takes precedence) · CPC title

• H01M10/4257

  Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries · CPC title

• H01M2010/4278

  Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller · CPC title