LOW STANDBY POWER IN A POWER STORAGE ADAPTER ENABLED BY AN ASSOCIATED BATTERY

• US 20180375361A1
• Filed: 06/23/2017
• Published: 12/27/2018
• Est. Priority Date: 06/23/2017
• Status: Abandoned Application

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Sultenfuss, Andrew Thomas, Thompson, Richard Christopher
• Application Number:
  US15/631,828
• Publication Number:
  US 20180375361A1
• Time in Patent Office: Days
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/0049 Detection of fully charged condition
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: H02J 7/007182 in response to battery 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: H02J 9/005 using a power saving mode for copiers G03G15/5004
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A power storage adapter may use a method for low standby power in a power storage adapter enabled by an associated battery when the power storage adapter is receiving electrical power from an AC line power source and the power storage adapter may have no external load drawing electrical power. In particular, the power storage adapter may avoid drawing electrical power from the AC line power source by using the associated battery to supply its electrical power, which may result in drawing near zero electrical power from the AC line power source.

Claims

1. A power storage adapter (PSA), comprising:

a PSA port;

a PSA battery; and

a PSA controller having access to memory media storing instructions executable by the PSA controller to;

determine that an alternating current (AC) line power source is connected to the power storage adapter;

determine that a state of charge of the PSA battery is greater than a recharge threshold state of charge;

determine that electrical power supplied to the PSA port is less than a threshold electrical power; and

responsive to determining the state of charge and determining the electrical power supplied to the PSA port, electrically disconnect the power storage adapter from the AC line power source.

2. The power storage adapter of claim 1, wherein the instructions to determine the electrical power supplied to the PSA port further comprise instructions to:

determine that the PSA port is disconnected using a plug detect mechanism that indicates whether a cable has been plugged in to the PSA port.

3. The power storage adapter of claim 1, wherein the instructions to determine the electrical power supplied to the PSA port further comprise instructions to:

determine that establishment of a power delivery contract for the PSA port failed.

4. The power storage adapter of claim 1, wherein the instructions to electrically disconnect the power storage adapter from the AC line power source further comprise instructions to:

electrically disconnect a direct-current (DC) output from an AC/DC converter included with the power storage adapter.

5. The power storage adapter of claim 1, wherein the instructions to electrically disconnect the power storage adapter from the AC line power source further comprise instructions to:

power off an AC/DC converter included with the power storage adapter.

6. The power storage adapter of claim 1, further comprising instructions to:

monitor the state of charge;

in response to determining that the state of charge is less than or equal to the recharge threshold state of charge, electrically connect the power storage adapter to the AC line power source; and

recharge the PSA battery from the AC line power source.

7. The power storage adapter of claim 1, wherein the PSA battery powers an external display element included with the PSA, the external display element indicating whether the PSA is powered on.

8. The power storage adapter of claim 7, wherein the external display element is a light emitting diode (LED) device.

9. The power storage adapter of claim 1, wherein the PSA port is a USB Type-C port.

10. A method, comprising:

determining, by a power storage adapter (PSA) controller of a power storage adapter, that an alternating current (AC) line power source is connected to the power storage adapter;

determining, by the PSA controller, that a state of charge of a PSA battery of the power storage adapter is greater than a recharge threshold state of charge;

determining, by the PSA controller, that electrical power supplied to a PSA port of the power storage adapter is less than a threshold electrical power; and

responsive to determining the state of charge and determining the electrical power supplied to the PSA port, electrically disconnecting, by the PSA controller, the power storage adapter from the AC line power source.

11. The method of claim 10, wherein determining the electrical power supplied to the PSA port further comprises:

determining that the PSA port is disconnected using a plug detect mechanism that indicates whether a cable has been plugged in to the PSA port.

12. The method of claim 10, wherein determining the electrical power supplied to the PSA port further comprises:

determining that establishing a power delivery contract for the PSA port failed.

13. The method of claim 10, wherein electrically disconnecting the power storage adapter from the AC line power source further comprises:

electrically disconnecting a direct-current (DC) output from an AC/DC converter included with the power storage adapter.

14. The method of claim 10, wherein electrically disconnecting the power storage adapter from the AC line power source further comprises:

powering off an AC/DC converter included with the power storage adapter.

15. The method of claim 10, further comprising:

monitoring the state of charge;

in response to determining that the state of charge is less than or equal to the recharge threshold state of charge, electrically connecting the power storage adapter to the AC line power source; and

recharging the PSA battery from the AC line power source.

16. The method of claim 10, wherein the PSA battery powers an external display element included with the PSA, the external display element indicating whether the PSA is powered on.

17. The method of claim 16, wherein the external display element is a light emitting diode (LED) device.

18. The method of claim 10, wherein the PSA port is a USB Type-C port.