{
  "node": {
    "id": "term:gbt-36276",
    "type": "Term",
    "label": "GB/T 36276",
    "properties": {
      "id": "gbt-36276",
      "name": "GB/T 36276",
      "section": "topic-standards-stationary",
      "definition": "China’s national standard for lithium-ion batteries in electrical energy storage, covering cells and modules: electrical performance, environmental adaptability, durability and safety tests such as crush, drop, short circuit, insulation withstand and adiabatic temperature rise. The 2023 edition has applied since July 2024 and adds requirements for liquid-cooled modules.",
      "related": [
        "stationary-storage",
        "iec-62619",
        "gbt-36558",
        "lfp",
        "accelerating-rate-calorimetry"
      ],
      "url": "https://lemonergy.com/learn/glossary/gbt-36276/",
      "mentions": [
        "short-circuit",
        "adiabatic-isothermal"
      ]
    }
  },
  "edges": [
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      "id": "edge:6460",
      "source": "term:gbt-36276",
      "target": "topic:topic-standards-stationary",
      "type": "belongsTo",
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    {
      "id": "edge:6461",
      "source": "term:gbt-36276",
      "target": "term:stationary-storage",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6462",
      "source": "term:gbt-36276",
      "target": "term:iec-62619",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6463",
      "source": "term:gbt-36276",
      "target": "term:gbt-36558",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6464",
      "source": "term:gbt-36276",
      "target": "term:lfp",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
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    },
    {
      "id": "edge:6465",
      "source": "term:gbt-36276",
      "target": "term:accelerating-rate-calorimetry",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
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      "id": "edge:mentions/gbt-36276/short-circuit",
      "source": "term:gbt-36276",
      "target": "term:short-circuit",
      "type": "mentions",
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        "field": "definition",
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      "target": "term:adiabatic-isothermal",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
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        "meaning": "Text mention; not a causal claim"
      }
    }
  ],
  "neighbors": [
    {
      "id": "topic:topic-standards-stationary",
      "type": "Topic",
      "label": "Stationary, industrial and product standards",
      "properties": {
        "id": "topic-standards-stationary",
        "name": "Stationary, industrial and product standards",
        "lede": "Safety and performance standards for portable, industrial and grid batteries, their electronics and their installation.",
        "context": "Match scope to product and installation.",
        "example": "A cell-level test does not establish fire performance or commissioning requirements for a complete installation.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/battery-basics/",
        "lesson_label": "Open battery basics"
      }
    },
    {
      "id": "term:stationary-storage",
      "type": "Term",
      "label": "Stationary storage",
      "properties": {
        "id": "stationary-storage",
        "name": "Stationary storage",
        "abbr": "BESS",
        "aka": [
          "battery energy storage system",
          "ESS"
        ],
        "section": "topic-applications",
        "definition": "Batteries installed in a fixed place — a container at a solar farm, a cabinet in a home — to shift energy in time or support the grid. LFP cells dominate because cost per cycle and safety matter more than mass.",
        "related": [
          "lfp",
          "energy-management-system",
          "inverter",
          "energy-arbitrage",
          "long-duration-storage",
          "ul-9540a"
        ],
        "url": "https://lemonergy.com/learn/glossary/stationary-storage/",
        "mentions": []
      }
    },
    {
      "id": "term:iec-62619",
      "type": "Term",
      "label": "IEC 62619",
      "properties": {
        "id": "iec-62619",
        "name": "IEC 62619",
        "section": "topic-standards-stationary",
        "definition": "The safety standard for secondary lithium cells and batteries in industrial applications — stationary storage, forklifts, rail and marine — covering cell abuse tests plus battery-system functions such as overcharge and thermal control. It is the industrial counterpart of IEC 62133 for portable and IEC 62660 for vehicles.",
        "related": [
          "iec-62133",
          "iec-62660",
          "stationary-storage",
          "conformity-assessment",
          "iec-63056",
          "en-62040-1"
        ],
        "url": "https://lemonergy.com/learn/glossary/iec-62619/",
        "mentions": [
          "overcharge"
        ]
      }
    },
    {
      "id": "term:gbt-36558",
      "type": "Term",
      "label": "GB/T 36558 and GB/T 36545",
      "properties": {
        "id": "gbt-36558",
        "name": "GB/T 36558 and GB/T 36545",
        "aka": [
          "GB/T 36558",
          "GB/T 36545"
        ],
        "section": "topic-standards-stationary",
        "definition": "Two Chinese national standards for electrochemical storage on the grid: GB/T 36558 sets general technical requirements for storage systems in the power system — power control, efficiency, fault ride-through, frequency response, black start — and GB/T 36545 covers mobile, vehicle-mounted storage systems. Both were revised in 2023 and apply from July 2024.",
        "related": [
          "gbt-36276",
          "iec-62933",
          "stationary-storage",
          "frequency-regulation",
          "energy-management-system"
        ],
        "url": "https://lemonergy.com/learn/glossary/gbt-36558/",
        "mentions": []
      }
    },
    {
      "id": "term:lfp",
      "type": "Term",
      "label": "LFP",
      "properties": {
        "id": "lfp",
        "name": "LFP",
        "aka": [
          "lithium iron phosphate",
          "LiFePO₄"
        ],
        "section": "topic-chemistries",
        "definition": "A positive electrode material, LiFePO₄, giving cells a nominal voltage around 3.2 V, long cycle life and good thermal stability, but less energy per kilogram than nickel-rich oxides. Its flat voltage curve makes state of charge hard to read from voltage alone.",
        "related": [
          "cathode-active-material",
          "nmc",
          "lmfp",
          "ocv-soc-curve",
          "cycle-life"
        ],
        "lesson": "fundamentals/cell-anatomy/#voltage",
        "example": {
          "title": "Chemistry is not the whole datasheet",
          "text": "Two LFP products can differ in format, loading, capacity and current limits. Their cathode family alone does not make them interchangeable."
        },
        "url": "https://lemonergy.com/learn/glossary/lfp/",
        "mentions": [
          "electrode",
          "positive-electrode",
          "nominal-voltage",
          "discharge-curve",
          "state-of-charge"
        ]
      }
    },
    {
      "id": "term:accelerating-rate-calorimetry",
      "type": "Term",
      "label": "Accelerating rate calorimetry",
      "properties": {
        "id": "accelerating-rate-calorimetry",
        "name": "Accelerating rate calorimetry",
        "abbr": "ARC",
        "section": "topic-safety",
        "definition": "A test in which a cell sits in an adiabatic chamber that follows its temperature, so any self-heating is not lost to the surroundings. It measures the onset temperature, the self-heating rate and the temperature at which runaway becomes unstoppable.",
        "related": [
          "onset-temperature",
          "thermal-runaway",
          "differential-scanning-calorimetry"
        ],
        "url": "https://lemonergy.com/learn/glossary/accelerating-rate-calorimetry/",
        "mentions": [
          "adiabatic-isothermal"
        ]
      }
    },
    {
      "id": "term:short-circuit",
      "type": "Term",
      "label": "Short circuit",
      "properties": {
        "id": "short-circuit",
        "name": "Short circuit",
        "section": "topic-units",
        "definition": "A connection of negligible resistance between two points that should be separated, so current is limited only by the source. For a battery it may be external, across the terminals, or internal, between the electrodes inside the cell.",
        "related": [
          "external-short-circuit",
          "internal-short-circuit",
          "fuse",
          "ohms-law"
        ],
        "lesson": "fundamentals/cell-anatomy/#short-circuit",
        "url": "https://lemonergy.com/learn/glossary/short-circuit/",
        "mentions": []
      }
    },
    {
      "id": "term:adiabatic-isothermal",
      "type": "Term",
      "label": "Adiabatic and isothermal conditions",
      "properties": {
        "id": "adiabatic-isothermal",
        "name": "Adiabatic and isothermal conditions",
        "aka": [
          "adiabatic",
          "isothermal"
        ],
        "section": "topic-thermal",
        "definition": "Two idealised thermal boundaries used in testing. Adiabatic means no heat escapes, so every joule raises the sample’s temperature — the principle of accelerating rate calorimetry and the worst case for a pack whose cooling fails. Isothermal means the sample is held at constant temperature while the heat it releases is measured, as in isothermal calorimetry.",
        "related": [
          "accelerating-rate-calorimetry",
          "heat-generation",
          "thermal-characterisation",
          "thermal-runaway"
        ],
        "url": "https://lemonergy.com/learn/glossary/adiabatic-isothermal/",
        "mentions": [
          "joule",
          "isothermal-calorimetry"
        ]
      }
    }
  ]
}