{
  "node": {
    "id": "term:evse",
    "type": "Term",
    "label": "Electric vehicle supply equipment",
    "properties": {
      "id": "evse",
      "name": "Electric vehicle supply equipment",
      "abbr": "EVSE",
      "aka": [
        "charging station",
        "charge point",
        "wallbox"
      ],
      "section": "topic-infrastructure",
      "definition": "The charging equipment between the grid and the vehicle: an AC wallbox that only switches and protects the supply, or a DC charger that also converts it. It enforces the current limit, ground-fault protection and communication with the vehicle.",
      "related": [
        "charging-modes",
        "dc-fast-charging",
        "control-pilot",
        "ocpp",
        "evcc"
      ],
      "url": "https://lemonergy.com/learn/glossary/evse/",
      "mentions": [
        "charger"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:4514",
      "source": "term:evse",
      "target": "topic:topic-infrastructure",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:4515",
      "source": "term:evse",
      "target": "term:charging-modes",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4516",
      "source": "term:evse",
      "target": "term:dc-fast-charging",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4517",
      "source": "term:evse",
      "target": "term:control-pilot",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4518",
      "source": "term:evse",
      "target": "term:ocpp",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4519",
      "source": "term:evse",
      "target": "term:evcc",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/evse/charger",
      "source": "term:evse",
      "target": "term:charger",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    },
    {
      "id": "edge:4521",
      "source": "term:evse",
      "target": "reference:afdc-charging",
      "type": "cites",
      "properties": {
        "sourceFile": "wiki-references.json",
        "scope": "direct technical reference"
      }
    }
  ],
  "neighbors": [
    {
      "id": "topic:topic-infrastructure",
      "type": "Topic",
      "label": "Charging infrastructure",
      "properties": {
        "id": "topic-infrastructure",
        "name": "Charging infrastructure",
        "lede": "Where and how vehicles are charged: charging strategies, power levels, connectors and the protocols between vehicle and charger.",
        "context": "Separate compatibility from requested average power.",
        "example": "A 100 kW model request does not establish real voltage, current, connector or negotiation compatibility.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/capacity-and-c-rate/",
        "lesson_label": "Open charging quantities"
      }
    },
    {
      "id": "term:charging-modes",
      "type": "Term",
      "label": "Charging modes 1–4",
      "properties": {
        "id": "charging-modes",
        "name": "Charging modes 1–4",
        "aka": [
          "IEC 61851",
          "Mode 3",
          "Mode 4"
        ],
        "section": "topic-infrastructure",
        "definition": "The IEC 61851 classes of conductive charging: mode 1 a plain domestic socket, mode 2 a socket with an in-cable control box, mode 3 a dedicated AC charging point with the control pilot, and mode 4 DC charging where the converter is in the station. Most public charging is mode 3 or 4.",
        "related": [
          "slow-charging",
          "control-pilot",
          "sae-j1772",
          "evse",
          "charging-levels",
          "iec-62752"
        ],
        "url": "https://lemonergy.com/learn/glossary/charging-modes/",
        "mentions": []
      }
    },
    {
      "id": "term:dc-fast-charging",
      "type": "Term",
      "label": "DC fast charging",
      "properties": {
        "id": "dc-fast-charging",
        "name": "DC fast charging",
        "abbr": "DCFC",
        "aka": [
          "rapid charging",
          "HPC"
        ],
        "section": "topic-infrastructure",
        "definition": "Charging from a station that supplies DC straight to the pack, bypassing the car’s onboard charger, at 50 kW to over 350 kW. The BMS, not the charger, sets the current from moment to moment, which is why the charge curve tapers as the pack fills.",
        "related": [
          "fast-charging",
          "onboard-charger",
          "pack-voltage",
          "preconditioning",
          "charging-curve",
          "evse"
        ],
        "url": "https://lemonergy.com/learn/glossary/dc-fast-charging/",
        "mentions": [
          "charger",
          "bms"
        ]
      }
    },
    {
      "id": "term:control-pilot",
      "type": "Term",
      "label": "Control pilot",
      "properties": {
        "id": "control-pilot",
        "name": "Control pilot",
        "abbr": "CP",
        "aka": [
          "proximity pilot",
          "PP"
        ],
        "section": "topic-infrastructure",
        "definition": "The signal wire in an AC or CCS charging connector: the charger puts a ±12 V square wave on it whose duty cycle tells the vehicle the maximum current, and the vehicle answers by switching resistors. The proximity pilot beside it tells the vehicle a plug is inserted.",
        "related": [
          "sae-j1772",
          "plc-green-phy",
          "ccu",
          "onboard-charger"
        ],
        "url": "https://lemonergy.com/learn/glossary/control-pilot/",
        "mentions": [
          "charger"
        ]
      }
    },
    {
      "id": "term:ocpp",
      "type": "Term",
      "label": "Open Charge Point Protocol",
      "properties": {
        "id": "ocpp",
        "name": "Open Charge Point Protocol",
        "abbr": "OCPP",
        "section": "topic-infrastructure",
        "definition": "The open protocol between a charging station and the back-office system that manages it: authorisation, start and stop, metering, smart-charging limits and remote updates. Depot charging of bus fleets is usually orchestrated through OCPP.",
        "related": [
          "depot-charging",
          "iso-15118",
          "energy-management-system",
          "fleet-telematics",
          "iec-63110"
        ],
        "url": "https://lemonergy.com/learn/glossary/ocpp/",
        "mentions": [
          "evse"
        ]
      }
    },
    {
      "id": "term:evcc",
      "type": "Term",
      "label": "EVCC and SECC",
      "properties": {
        "id": "evcc",
        "name": "EVCC and SECC",
        "aka": [
          "electric vehicle communication controller",
          "supply equipment communication controller"
        ],
        "section": "topic-infrastructure",
        "definition": "The two ends of high-level charging communication: the electric vehicle communication controller in the vehicle and the supply equipment communication controller in the charger. They exchange limits, schedules and authorisation over power-line communication on the control-pilot wire.",
        "related": [
          "ccu",
          "iso-15118",
          "din-70121",
          "plc-green-phy",
          "dc-fast-charging"
        ],
        "url": "https://lemonergy.com/learn/glossary/evcc/",
        "mentions": [
          "charger",
          "electric-vehicle"
        ]
      }
    },
    {
      "id": "term:charger",
      "type": "Term",
      "label": "Charger",
      "properties": {
        "id": "charger",
        "name": "Charger",
        "section": "topic-charging",
        "definition": "The power electronics that convert mains or DC supply into the controlled current and voltage a battery needs. For lithium-ion it runs the CC-CV profile within the limits the BMS communicates, and stops rather than floats when the cell is full.",
        "related": [
          "cc-cv-charging",
          "bms",
          "onboard-charger",
          "dc-fast-charging"
        ],
        "url": "https://lemonergy.com/learn/glossary/charger/",
        "mentions": []
      }
    },
    {
      "id": "reference:afdc-charging",
      "type": "Reference",
      "label": "Electric Vehicle Charging Stations",
      "properties": {
        "title": "Electric Vehicle Charging Stations",
        "publisher": "U.S. Department of Energy, Alternative Fuels Data Center",
        "url": "https://afdc.energy.gov/fuels/electricity-stations",
        "type": "Technical explainer",
        "scope": "U.S. charging equipment levels, charging infrastructure and connector context. Regional terminology varies.",
        "accessed": "2026-10-27"
      }
    }
  ]
}