{
  "node": {
    "id": "term:prismatic-cell",
    "type": "Term",
    "label": "Prismatic cell",
    "properties": {
      "id": "prismatic-cell",
      "name": "Prismatic cell",
      "section": "topic-chemistries",
      "definition": "A cell in a rigid rectangular metal case, holding either a flattened jelly roll or stacked sheets. Large prismatic cells pack tightly into battery packs.",
      "related": [
        "can",
        "jelly-roll",
        "stacking",
        "cylindrical-cell",
        "pouch-cell"
      ],
      "lesson": "fundamentals/cell-production/#formats",
      "example": {
        "title": "Geometry is one constraint",
        "text": "Two rectangular cells can fit similar spaces but use different terminals and electrical ratings."
      },
      "url": "https://lemonergy.com/learn/glossary/prismatic-cell/",
      "mentions": []
    }
  },
  "edges": [
    {
      "id": "edge:829",
      "source": "term:prismatic-cell",
      "target": "topic:topic-chemistries",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:830",
      "source": "term:prismatic-cell",
      "target": "term:can",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:831",
      "source": "term:prismatic-cell",
      "target": "term:jelly-roll",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:832",
      "source": "term:prismatic-cell",
      "target": "term:stacking",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:833",
      "source": "term:prismatic-cell",
      "target": "term:cylindrical-cell",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:834",
      "source": "term:prismatic-cell",
      "target": "term:pouch-cell",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:835",
      "source": "term:prismatic-cell",
      "target": "lesson:fundamentals/cell-production/",
      "type": "explainedIn",
      "properties": {
        "sourceFile": "terms.json",
        "url": "https://lemonergy.com/learn/fundamentals/cell-production/#formats"
      }
    }
  ],
  "neighbors": [
    {
      "id": "topic:topic-chemistries",
      "type": "Topic",
      "label": "Lithium-ion chemistries and cell formats",
      "properties": {
        "id": "topic-chemistries",
        "name": "Lithium-ion chemistries and cell formats",
        "lede": "The electrode materials that define a lithium-ion cell, the crystal structures behind them, and the shapes cells are built in.",
        "context": "Separate chemistry from form factor.",
        "example": "Two cylindrical cells can share dimensions yet differ in cathode, capacity and current limits.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/cell-architecture/",
        "lesson_label": "Open cell architecture"
      }
    },
    {
      "id": "term:can",
      "type": "Term",
      "label": "Can",
      "properties": {
        "id": "can",
        "name": "Can",
        "aka": [
          "casing",
          "housing"
        ],
        "section": "topic-components",
        "definition": "The rigid metal case of a cylindrical or prismatic cell, usually nickel-plated steel or aluminium. It holds the stack under pressure, contains the electrolyte and, in a cylindrical cell, doubles as the negative terminal.",
        "related": [
          "cylindrical-cell",
          "prismatic-cell",
          "pouch-foil",
          "vent",
          "helium-leak-test"
        ],
        "url": "https://lemonergy.com/learn/glossary/can/",
        "mentions": [
          "electrolyte"
        ]
      }
    },
    {
      "id": "term:jelly-roll",
      "type": "Term",
      "label": "Jelly roll",
      "properties": {
        "id": "jelly-roll",
        "name": "Jelly roll",
        "section": "topic-components",
        "definition": "Electrodes and separators wound together into a spiral. It is the inside of a cylindrical cell and of many prismatic cells; large pouch cells usually use stacked sheets instead.",
        "related": [
          "winding",
          "cylindrical-cell",
          "prismatic-cell",
          "stacking"
        ],
        "lesson": "fundamentals/cell-architecture/#whole-cell",
        "example": {
          "title": "Unroll the geometry",
          "text": "A wound assembly contains long electrode and separator strips; the cylindrical exterior does not make its electrodes solid cylinders."
        },
        "url": "https://lemonergy.com/learn/glossary/jelly-roll/",
        "mentions": []
      }
    },
    {
      "id": "term:stacking",
      "type": "Term",
      "label": "Stacking",
      "properties": {
        "id": "stacking",
        "name": "Stacking",
        "aka": [
          "Z-folding",
          "lamination"
        ],
        "section": "topic-manufacturing",
        "definition": "Building a cell from individual electrode sheets interleaved with separator, either sheet by sheet or by folding a continuous separator in a zigzag. It uses the volume of a rectangular case better than winding but is slower and more exacting.",
        "related": [
          "winding",
          "pouch-cell",
          "prismatic-cell",
          "notching"
        ],
        "lesson": "fundamentals/cell-production/#assembly",
        "url": "https://lemonergy.com/learn/glossary/stacking/",
        "mentions": [
          "electrode",
          "separator"
        ]
      }
    },
    {
      "id": "term:cylindrical-cell",
      "type": "Term",
      "label": "Cylindrical cell",
      "properties": {
        "id": "cylindrical-cell",
        "name": "Cylindrical cell",
        "aka": [
          "18650",
          "21700",
          "4680"
        ],
        "section": "topic-chemistries",
        "definition": "A cell made by winding the electrodes into a jelly roll and sealing it in a round metal can. Sizes are named by their dimensions: a 21700 cell is 21 mm across and 70 mm long.",
        "related": [
          "jelly-roll",
          "can",
          "tabless-design",
          "prismatic-cell",
          "pouch-cell",
          "centre-pin"
        ],
        "lesson": "fundamentals/cell-production/#formats",
        "example": {
          "title": "Shape versus ratings",
          "text": "A cylindrical shape does not supply the model’s capacity, resistance or voltage limits; those belong to the actual cell."
        },
        "url": "https://lemonergy.com/learn/glossary/cylindrical-cell/",
        "mentions": [
          "winding"
        ]
      }
    },
    {
      "id": "term:pouch-cell",
      "type": "Term",
      "label": "Pouch cell",
      "properties": {
        "id": "pouch-cell",
        "name": "Pouch cell",
        "aka": [
          "lithium polymer cell",
          "LiPo"
        ],
        "section": "topic-chemistries",
        "definition": "A cell sealed in a flexible bag of aluminium laminated with plastic, holding stacked electrode sheets in larger cells or a flattened wound roll in many small ones. It is light and easy to cool, but needs outside support and can visibly swell if gas forms inside.",
        "related": [
          "pouch-foil",
          "stacking",
          "swelling",
          "degassing",
          "prismatic-cell"
        ],
        "lesson": "fundamentals/cell-production/#formats",
        "example": {
          "title": "Include mechanical support",
          "text": "A pouch encloses layered electrodes. Support provided by the module is part of the complete design, separate from the active layers."
        },
        "url": "https://lemonergy.com/learn/glossary/pouch-cell/",
        "mentions": [
          "electrode"
        ]
      }
    },
    {
      "id": "lesson:fundamentals/cell-production/",
      "type": "Lesson",
      "label": "Lesson 3 · Cell production",
      "properties": {
        "url": "https://lemonergy.com/learn/fundamentals/cell-production/"
      }
    }
  ]
}