Methods, devices, and systems for submetering of an electric vehicle (EV) charging session

1. An apparatus for submetering an electric vehicle (EV) charging session, the apparatus comprising:

a first connector configured for coupling with an EV charger;

a second connector configured for coupling with a charging port of an EV; and

a controller electrically coupled with the first connector; and

a communication interface electrically coupled with the controller, wherein the controller is configured for:

detecting a beginning of the EV charging session;

monitoring EV charging current and EV charging voltage during the EV charging session;

detecting an end of the EV charging session;

determining an amount of energy transferred during the EV charging session; and

transmitting to a mobile client device a value representing the amount of energy transferred during the EV charging session via the communication interface, wherein the mobile client device configured for:

receiving charging data from the apparatus, and the charging data includes the value representing the amount of energy;

transmitting the amount of energy transferred during the EV charging session to a remote server; and

transmitting metadata associated with the amount of energy to the remote server, wherein the metadata identifies that at least a portion of a cost of the amount of energy is a business-related expense for a user associated with the mobile client device, based on a selection made by the user from a graphical user interface (GUI) of the mobile client device.

2. The apparatus of claim 1 , wherein:

the first connector is at least one of a J1772 (Type 1) connector, a CCS1 connector, a CHAdeMO connector, a Mennekes (Type 2) connector, a CCS2 connector, a GB/T connector, or a Tesla connector; and

the second connector is at least one of a J1772 (Type 1) connector, a CCS1 connector, a CHAdeMO connector, a Mennekes (Type 2) connector, a CCS2 connector, a GB/T connector, or a Tesla connector.

3. The apparatus of claim 1 , wherein the first connector is a plug connector of a first type and the second connector is a socket connector of the first type.

4. The apparatus of claim 1 , wherein the first connector is a socket connector of a first type and the second connector is a plug connector of the first type.

5. The apparatus of claim 1 , wherein the communication interface is at least one of a wireless personal area network (WPAN) interface or a wireless local area network (WLAN) interface.

6. The apparatus of claim 1 , wherein the communication interface is a wide area network (WAN) interface.

7. The apparatus of claim 1 , wherein the mobile client device is at least one of a smart phone, a smart tablet, or a smart watch.

8. The apparatus of claim 1 , wherein the remote server is a portion of a networked computing environment.

9. The apparatus of claim 1 , wherein the controller is further configured for synchronizing an apparatus time reference within a mobile client device time reference.

10. The apparatus of claim 1 , wherein the EV charger is a home-based EV charger.

11. The apparatus of claim 1 , wherein the EV charger is a public EV charger.

12. The apparatus of claim 1 , wherein the mobile client device is further configured for requesting the charging data upon network detection of the apparatus and the apparatus provides the charging data from non-volatile memory within the apparatus.

13. The apparatus of claim 1 , wherein the amount of energy and the metadata are compliant to a Charge Detail Record (CDR).

14. The apparatus of claim 1 , wherein the remote server is associated with a Charge Point Operator (CPO).

15. The apparatus of claim 1 , wherein a protocol compliant to at least one version of an Open Charge Point Protocol (OCPP) is used for transmitting the amount of energy and the metadata.

16. The apparatus of claim 1 , wherein the metadata includes a timestamp.

17. The apparatus of claim 1 , wherein:

the communication interface is a wireless personal area network interface; and

the mobile client device is further configured to transmit the metadata over at least one of a wireless wide area network (WAN) interface or a local area network (LAN) interface.

18. The apparatus of claim 1 , wherein the mobile client device is further configured for transmitting the amount of energy and the metadata to a printer based on a request received from a graphical user interface (GUI) of the mobile client device.

19. A method implemented by an apparatus for submetering an electric vehicle (EV) charging session, the method comprising:

detecting a beginning of an electric vehicle (EV) charging session;

monitoring EV charging current and EV charging voltage during the EV charging session;

detecting an end of the EV charging session;

determining an amount of energy transferred during the EV charging session; and

transmitting to a mobile client device a value representing the amount of energy transferred during the EV charging session, wherein the apparatus comprises:

a first connector configured for coupling with an EV charger;

a second connector configured for coupling with a charging port of an EV;

a controller electrically coupled with the first connector; and

a communication interface electrically coupled with the controller, wherein the mobile client device configured for:

receiving charging data from the apparatus, and the charging data includes the value representing the amount of energy;

transmitting the amount of energy transferred during the EV charging session to a remote server; and

transmitting metadata associated with the amount of energy to a remote server, wherein the metadata identifies that at least a portion of a cost of the amount of energy is a business-related expense for a user associated with the mobile client device, based on a selection made by the user from a graphical user interface (GUI) of the mobile client device.

20. A non-transitory computer-readable storage medium, the non-transitory computer-readable storage medium storing instructions to be implemented by a controller within an apparatus, the instructions when executed by the controller perform a method of:

detecting a beginning of an electric vehicle (EV) charging session;

monitoring EV charging current and EV charging voltage during the EV charging session;

detecting an end of the EV charging session;

determining an amount of energy transferred during the EV charging session; and

transmitting to a mobile client device a value representing the amount of energy transferred during the EV charging session, wherein the apparatus further comprises:

a first connector configured for coupling with an EV charger;

a second connector configured for coupling with a charging port of an EV;

a controller electrically coupled with the first connector; and

a communication interface electrically coupled with the controller, wherein the mobile client device configured for:

receiving charging data from the apparatus, and the charging data includes the value representing the amount of energy;

transmitting the amount of energy transferred during the EV charging session to a remote server; and

transmitting metadata associated with the amount of energy to a remote server, wherein the metadata identifies that at least a portion of a cost of the amount of energy is a business-related expense for a user associated with the mobile client device, based on a selection made by the user from a graphical user interface (GUI) of the mobile client device.