{
  "node": {
    "id": "term:cell-canning",
    "type": "Term",
    "label": "Cell canning",
    "properties": {
      "id": "cell-canning",
      "name": "Cell canning",
      "aka": [
        "canning",
        "can insertion",
        "beading and crimping"
      ],
      "section": "topic-manufacturing",
      "definition": "The assembly steps that put a jelly roll or stack into its metal can and close it: insertion, welding the negative tab to the can base, beading a groove that will hold the cap, and sealing the cap by crimping or laser welding, before or after electrolyte filling depending on format. Seal quality decides whether the cell stays leak-tight for life.",
      "related": [
        "can",
        "cylindrical-cell",
        "cell-assembly",
        "resistance-welding",
        "laser-welding",
        "electrolyte-filling"
      ],
      "url": "https://lemonergy.com/learn/glossary/cell-canning/",
      "mentions": [
        "electrolyte",
        "jelly-roll"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:4881",
      "source": "term:cell-canning",
      "target": "topic:topic-manufacturing",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:4882",
      "source": "term:cell-canning",
      "target": "term:can",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4883",
      "source": "term:cell-canning",
      "target": "term:cylindrical-cell",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4884",
      "source": "term:cell-canning",
      "target": "term:cell-assembly",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4885",
      "source": "term:cell-canning",
      "target": "term:resistance-welding",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4886",
      "source": "term:cell-canning",
      "target": "term:laser-welding",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4887",
      "source": "term:cell-canning",
      "target": "term:electrolyte-filling",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/cell-canning/electrolyte",
      "source": "term:cell-canning",
      "target": "term:electrolyte",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/cell-canning/jelly-roll",
      "source": "term:cell-canning",
      "target": "term:jelly-roll",
      "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-manufacturing",
      "type": "Topic",
      "label": "Manufacturing",
      "properties": {
        "id": "topic-manufacturing",
        "name": "Manufacturing",
        "lede": "The steps that turn powders and foils into a finished cell, in production order.",
        "context": "Place operations and quality checks in process order.",
        "example": "An electrode can meet coating mass targets but fail adhesion or moisture checks later.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/cell-production/",
        "lesson_label": "Open production"
      }
    },
    {
      "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: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:cell-assembly",
      "type": "Term",
      "label": "Cell assembly",
      "properties": {
        "id": "cell-assembly",
        "name": "Cell assembly",
        "section": "topic-manufacturing",
        "definition": "The second phase of cell production: building the electrode–separator stack by winding or stacking, welding the tabs, inserting it into the case and filling the electrolyte. Most of it happens in the dry room.",
        "related": [
          "winding",
          "stacking",
          "tab-welding",
          "electrolyte-filling",
          "cell-production"
        ],
        "lesson": "fundamentals/cell-production/#assembly",
        "url": "https://lemonergy.com/learn/glossary/cell-assembly/",
        "mentions": [
          "electrode",
          "separator",
          "electrolyte",
          "dry-room"
        ]
      }
    },
    {
      "id": "term:resistance-welding",
      "type": "Term",
      "label": "Resistance welding",
      "properties": {
        "id": "resistance-welding",
        "name": "Resistance welding",
        "aka": [
          "resistance spot welding",
          "spot welding"
        ],
        "section": "topic-manufacturing",
        "definition": "Joining metals by clamping them between electrodes and passing a short, high current pulse, so contact resistance melts a small nugget. It joins the negative tab to the can base inside cylindrical cells and nickel strips to cell terminals in tool and e-bike packs; for copper and aluminium busbars laser welding has largely taken over, as they conduct too well to heat.",
        "related": [
          "laser-welding",
          "ultrasonic-welding",
          "tab-welding",
          "cell-canning",
          "busbar"
        ],
        "url": "https://lemonergy.com/learn/glossary/resistance-welding/",
        "mentions": [
          "micromobility",
          "contact-resistance"
        ]
      }
    },
    {
      "id": "term:laser-welding",
      "type": "Term",
      "label": "Laser welding",
      "properties": {
        "id": "laser-welding",
        "name": "Laser welding",
        "section": "topic-manufacturing",
        "definition": "Joining metal with a focused laser beam, used to seal cans, attach caps and connect busbars to cell terminals. It is fast and precise but sensitive to gaps and reflectivity, so copper joints need special wavelengths or beam shaping.",
        "related": [
          "ultrasonic-welding",
          "tab-welding",
          "busbar",
          "can"
        ],
        "url": "https://lemonergy.com/learn/glossary/laser-welding/",
        "mentions": []
      }
    },
    {
      "id": "term:electrolyte-filling",
      "type": "Term",
      "label": "Electrolyte filling",
      "properties": {
        "id": "electrolyte-filling",
        "name": "Electrolyte filling",
        "section": "topic-manufacturing",
        "definition": "Injecting a measured volume of electrolyte into the sealed-but-for-one-opening cell, usually under vacuum followed by pressure so the liquid is pulled into the pores. The cell then rests for wetting before formation.",
        "related": [
          "wetting",
          "dry-room",
          "electrolyte",
          "cell-assembly"
        ],
        "lesson": "fundamentals/cell-production/#assembly",
        "url": "https://lemonergy.com/learn/glossary/electrolyte-filling/",
        "mentions": [
          "formation"
        ]
      }
    },
    {
      "id": "term:electrolyte",
      "type": "Term",
      "label": "Electrolyte",
      "properties": {
        "id": "electrolyte",
        "name": "Electrolyte",
        "section": "topic-electrolytes",
        "definition": "The ion-conducting medium between the electrodes. In a liquid-electrolyte cell it fills the pores of both electrodes and the separator, so it is not a separate structural layer.",
        "related": [
          "lithium-salt",
          "carbonate-solvent",
          "electrolyte-additive",
          "ionic-conductivity",
          "solid-electrolyte",
          "ionic-liquid-electrolyte"
        ],
        "lesson": "fundamentals/cell-architecture/#electrolyte",
        "example": {
          "title": "Ions and electrons",
          "text": "Electrolyte carries ions between electrodes; the external circuit carries electrons. The two paths serve different roles."
        },
        "url": "https://lemonergy.com/learn/glossary/electrolyte/",
        "mentions": [
          "separator"
        ]
      }
    },
    {
      "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": []
      }
    }
  ]
}