{
  "node": {
    "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": []
    }
  },
  "edges": [
    {
      "id": "edge:2431",
      "source": "term:laser-welding",
      "target": "topic:topic-manufacturing",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:2432",
      "source": "term:laser-welding",
      "target": "term:ultrasonic-welding",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2433",
      "source": "term:laser-welding",
      "target": "term:tab-welding",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2434",
      "source": "term:laser-welding",
      "target": "term:busbar",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2435",
      "source": "term:laser-welding",
      "target": "term:can",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; 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:ultrasonic-welding",
      "type": "Term",
      "label": "Ultrasonic welding",
      "properties": {
        "id": "ultrasonic-welding",
        "name": "Ultrasonic welding",
        "section": "topic-manufacturing",
        "definition": "Joining metals by pressing them together and vibrating one part at ultrasonic frequency, so friction scrubs the surfaces clean and bonds them below the melting point. It is the standard way to weld stacks of thin aluminium and copper foil.",
        "related": [
          "tab-welding",
          "laser-welding",
          "tab"
        ],
        "url": "https://lemonergy.com/learn/glossary/ultrasonic-welding/",
        "mentions": [
          "copper-foil"
        ]
      }
    },
    {
      "id": "term:tab-welding",
      "type": "Term",
      "label": "Tab welding",
      "properties": {
        "id": "tab-welding",
        "name": "Tab welding",
        "section": "topic-manufacturing",
        "definition": "Joining the bundle of foil tabs to the terminal tab, usually by ultrasonic welding, which bonds thin foils without melting them; laser welding is used for can-to-cap and busbar joints. A weak weld raises resistance and can fail in service.",
        "related": [
          "tab",
          "ultrasonic-welding",
          "laser-welding",
          "internal-resistance",
          "tab-pull-test"
        ],
        "lesson": "fundamentals/cell-production/#assembly",
        "url": "https://lemonergy.com/learn/glossary/tab-welding/",
        "mentions": [
          "busbar"
        ]
      }
    },
    {
      "id": "term:busbar",
      "type": "Term",
      "label": "Busbar",
      "properties": {
        "id": "busbar",
        "name": "Busbar",
        "section": "topic-pack",
        "definition": "A rigid copper or aluminium conductor that joins cell terminals into series and parallel groups, and modules into the pack. Its cross-section is sized for current and heating, and its joints — welded or bolted — are a classic source of resistance and failure.",
        "related": [
          "series-parallel",
          "terminal",
          "laser-welding",
          "internal-resistance",
          "wire-bonding"
        ],
        "url": "https://lemonergy.com/learn/glossary/busbar/",
        "mentions": []
      }
    },
    {
      "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"
        ]
      }
    }
  ]
}