On-site device to diagnose and recover offline networked electric vehicle supply equipments (evses)

A method for diagnosing networked Electric Vehicle Supply Equipments (EVSEs) with an on-site device, the method comprising:

• providing a first coupler interface configured to electrically connect the on-site device to one or more EVSEs;
• providing a first communication interface to connect the on-site device to a short-range communication network on a wired network via Transmission Control Protocol/Internet Protocol (TCP/IP) or Remote Terminal Unit (RTU) or on a wireless network;
• providing a second communication interface to connect the on-site device to a long-range wireless communication network;
• providing a processor;
• and
• providing a memory storing instructions that, when executed by the processor, cause the on-site device to:
• establish a communication connection with the EVSE;
• and
• interface to the EVSE via a programmable logic controller (PLC) on a control pilot, Modbus RTU or other near-field communication (NFC), perform diagnostics to locally recover charging operation or network connectivity of one or more EVSEs of the networked EVSEs and further aid in remote maintenance.

An on-site device configured to be used with networked Electric Vehicle Supply Equipment (EVSEs), the on-site device comprising:

• a first interface configured to electrically connect the on-site device to one or more EVSEs of the networked EVSEs;
• a first communication interface to connect the on-site device to a long-range communication network to allow transfer of diagnostic data to a remote server;
• a second communication interface to connect the on-site device to a short-range communication network at a site;
• a processor;
• and
• a memory storing instructions that, when executed by the processor, cause the on-site device to:
• establish a communication connection with an EVSE of the one or more EVSEs;
• and
• interface to the EVSE via a programmable logic controller (PLC) on a control pilot to perform diagnostics to locally recover charging operation of the one or more EVSEs, further aid in local or remote maintenance.