{
  "node": {
    "id": "term:hpc",
    "type": "Term",
    "label": "High-power charging",
    "properties": {
      "id": "hpc",
      "name": "High-power charging",
      "abbr": "HPC",
      "aka": [
        "ultra-fast charging",
        "ultra-rapid charging"
      ],
      "section": "topic-infrastructure",
      "definition": "DC charging at 150 kW and above, up to about 400 kW for cars, usually at 800–1000 V so the current stays within what cable and connector can carry. Liquid-cooled cables make the currents of 500 A and more practical.",
      "related": [
        "dc-fast-charging",
        "xfc",
        "pack-voltage",
        "charging-curve",
        "mcs"
      ],
      "url": "https://lemonergy.com/learn/glossary/hpc/",
      "mentions": []
    }
  },
  "edges": [
    {
      "id": "edge:106",
      "source": "term:hpc",
      "target": "workflow:charge-session",
      "type": "usedIn",
      "properties": {
        "sourceFile": "wiki-blocks.json"
      }
    },
    {
      "id": "edge:4442",
      "source": "term:hpc",
      "target": "topic:topic-infrastructure",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:4443",
      "source": "term:hpc",
      "target": "term:dc-fast-charging",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4444",
      "source": "term:hpc",
      "target": "term:xfc",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4445",
      "source": "term:hpc",
      "target": "term:pack-voltage",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4446",
      "source": "term:hpc",
      "target": "term:charging-curve",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4447",
      "source": "term:hpc",
      "target": "term:mcs",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    }
  ],
  "neighbors": [
    {
      "id": "workflow:charge-session",
      "type": "Workflow",
      "label": "Find the charge-time limit",
      "properties": {
        "id": "charge-session",
        "title": "Find the charge-time limit",
        "kind": "protocol",
        "summary": "The separate Charge session compares power, current, acceptance and CV limits.",
        "steps": [
          "Select a rechargeable cell and pack.",
          "Open Analysis → Charge session; increase power."
        ],
        "example": "A 50 kW source at 400 V cannot deliver 50 kW through a 100 A ceiling; that current limit corresponds to 40 kW.",
        "observe": "Read the named limiting reason.",
        "limits": "This differs from the Studio network and requires cell resistance data and product access.",
        "url": "https://design.lemonergy.com/",
        "label": "Open Design → Charge session",
        "evidence": [
          "js/charger.js"
        ]
      }
    },
    {
      "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: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:xfc",
      "type": "Term",
      "label": "Extreme fast charging",
      "properties": {
        "id": "xfc",
        "name": "Extreme fast charging",
        "abbr": "XFC",
        "section": "topic-charging",
        "definition": "Charging a vehicle battery in about 10–15 minutes, roughly 4C to 6C — the US Department of Energy’s research target that set the term. At these rates lithium plating, heat and electrolyte transport limit the cell, so XFC needs thin or structured electrodes, strong cooling and careful protocols.",
        "related": [
          "fast-charging",
          "lithium-plating",
          "hpc",
          "areal-loading",
          "mscc"
        ],
        "url": "https://lemonergy.com/learn/glossary/xfc/",
        "mentions": [
          "electrolyte"
        ]
      }
    },
    {
      "id": "term:pack-voltage",
      "type": "Term",
      "label": "Pack voltage",
      "properties": {
        "id": "pack-voltage",
        "name": "Pack voltage",
        "aka": [
          "400 V system",
          "800 V system"
        ],
        "section": "topic-pack",
        "definition": "The nominal voltage of the full series string, about 400 V in most electric cars and 800 V in newer ones. Doubling the voltage halves the current for the same power, so cables, connectors and losses shrink and charging can be faster.",
        "unit": "V",
        "related": [
          "series-parallel",
          "dc-fast-charging",
          "high-voltage-interlock",
          "insulation-resistance"
        ],
        "url": "https://lemonergy.com/learn/glossary/pack-voltage/",
        "mentions": [
          "nominal-voltage",
          "string"
        ]
      }
    },
    {
      "id": "term:charging-curve",
      "type": "Term",
      "label": "Charging curve",
      "properties": {
        "id": "charging-curve",
        "name": "Charging curve",
        "section": "topic-infrastructure",
        "definition": "The power a vehicle actually accepts against its state of charge during a fast charge: high at low SOC, stepping down as the cells approach voltage and plating limits. The area under it, not the peak kilowatts, decides how long a stop takes.",
        "unit": "kW",
        "related": [
          "dc-fast-charging",
          "fast-charging",
          "cc-cv-charging",
          "derating",
          "boost-charging"
        ],
        "url": "https://lemonergy.com/learn/glossary/charging-curve/",
        "mentions": [
          "state-of-charge"
        ]
      }
    },
    {
      "id": "term:mcs",
      "type": "Term",
      "label": "Megawatt Charging System",
      "properties": {
        "id": "mcs",
        "name": "Megawatt Charging System",
        "abbr": "MCS",
        "aka": [
          "SAE J3271"
        ],
        "section": "topic-infrastructure",
        "definition": "The connector and protocol standard for charging heavy trucks and coaches at up to 3.75 MW — up to 3000 A at 1250 V — so a long-haul truck can recharge during a driver’s mandatory break. It uses ISO 15118 communication over Ethernet rather than power-line signalling.",
        "related": [
          "hpc",
          "dc-fast-charging",
          "iso-15118",
          "pack-voltage",
          "electric-bus"
        ],
        "url": "https://lemonergy.com/learn/glossary/mcs/",
        "mentions": []
      }
    }
  ]
}