{
  "node": {
    "id": "term:wireless-bms",
    "type": "Term",
    "label": "Wireless BMS",
    "properties": {
      "id": "wireless-bms",
      "name": "Wireless BMS",
      "abbr": "wBMS",
      "section": "topic-pack",
      "definition": "A pack architecture in which each cell supervision circuit talks to the controller by radio instead of a wiring harness, saving cable, connectors and assembly time. It needs its own redundancy and security design to reach the same safety level.",
      "related": [
        "cell-supervision-circuit",
        "bms",
        "isospi"
      ],
      "url": "https://lemonergy.com/learn/glossary/wireless-bms/",
      "mentions": [
        "wiring-harness"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:3054",
      "source": "term:wireless-bms",
      "target": "topic:topic-pack",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:3055",
      "source": "term:wireless-bms",
      "target": "term:cell-supervision-circuit",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:3056",
      "source": "term:wireless-bms",
      "target": "term:bms",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:3057",
      "source": "term:wireless-bms",
      "target": "term:isospi",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/wireless-bms/wiring-harness",
      "source": "term:wireless-bms",
      "target": "term:wiring-harness",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    }
  ],
  "neighbors": [
    {
      "id": "topic:topic-pack",
      "type": "Topic",
      "label": "Modules, packs and battery management",
      "properties": {
        "id": "topic-pack",
        "name": "Modules, packs and battery management",
        "lede": "From a single cell to a working battery system, and the electronics that keep it safe.",
        "context": "Make series/parallel architecture explicit.",
        "example": "Twelve 3.6 V, 5 Ah cells in 6s2p give 21.6 V, 10 Ah and 216 Wh nominally before other restrictions.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/cell-architecture/",
        "lesson_label": "Open cell architecture"
      }
    },
    {
      "id": "term:cell-supervision-circuit",
      "type": "Term",
      "label": "Cell supervision circuit",
      "properties": {
        "id": "cell-supervision-circuit",
        "name": "Cell supervision circuit",
        "abbr": "CSC",
        "aka": [
          "cell monitoring unit",
          "CMU",
          "slave BMS"
        ],
        "section": "topic-pack",
        "definition": "The board on each module that measures its cell voltages and temperatures and switches its balancing resistors, reporting to the central BMS controller. It is usually built around a dedicated monitoring chip and linked by isoSPI or CAN.",
        "related": [
          "bms",
          "cell-balancing",
          "isospi",
          "voltage-sense",
          "afe",
          "wireless-bms"
        ],
        "url": "https://lemonergy.com/learn/glossary/cell-supervision-circuit/",
        "mentions": []
      }
    },
    {
      "id": "term:bms",
      "type": "Term",
      "label": "Battery management system",
      "properties": {
        "id": "bms",
        "name": "Battery management system",
        "abbr": "BMS",
        "section": "topic-pack",
        "definition": "The electronics and software that keep a battery inside its safe window: measuring every cell voltage and many temperatures, estimating SOC and SOH, balancing cells, computing current limits, controlling the contactors and reporting over the vehicle network.",
        "related": [
          "state-of-charge",
          "cell-balancing",
          "state-of-power",
          "cell-supervision-circuit",
          "contactor",
          "can-bus"
        ],
        "lesson": "fundamentals/battery-basics/#cell-module-pack",
        "url": "https://lemonergy.com/learn/glossary/bms/",
        "mentions": [
          "state-of-health",
          "cell-voltage"
        ]
      }
    },
    {
      "id": "term:isospi",
      "type": "Term",
      "label": "isoSPI",
      "properties": {
        "id": "isospi",
        "name": "isoSPI",
        "aka": [
          "daisy-chain interface"
        ],
        "section": "topic-pack",
        "definition": "A transformer-isolated, two-wire version of the SPI interface used to chain cell-monitoring chips across modules that sit at different voltages. It carries their measurements to the BMS controller without a separate isolated CAN node per module.",
        "related": [
          "cell-supervision-circuit",
          "bms",
          "can-bus"
        ],
        "url": "https://lemonergy.com/learn/glossary/isospi/",
        "mentions": []
      }
    },
    {
      "id": "term:wiring-harness",
      "type": "Term",
      "label": "Wiring harness",
      "properties": {
        "id": "wiring-harness",
        "name": "Wiring harness",
        "aka": [
          "cable harness",
          "HV harness",
          "LV harness"
        ],
        "section": "topic-pack",
        "definition": "The bundle of cables, connectors and fixings that carries power and signals through a pack or vehicle. High-voltage cables outside an enclosure must have an orange covering under UN R100; the low-voltage harness carries cell-sense lines, CAN, HVIL and supply. Chafed wires and fretted connector pins cause many field faults.",
        "related": [
          "voltage-sense",
          "high-voltage-interlock",
          "can-bus",
          "flexible-printed-circuit",
          "wireless-bms",
          "voltage-class"
        ],
        "url": "https://lemonergy.com/learn/glossary/wiring-harness/",
        "mentions": [
          "enclosure",
          "un-r100"
        ]
      }
    }
  ]
}