{
  "node": {
    "id": "term:thermoelectric-cooling",
    "type": "Term",
    "label": "Thermoelectric cooling",
    "properties": {
      "id": "thermoelectric-cooling",
      "name": "Thermoelectric cooling",
      "abbr": "TEC",
      "aka": [
        "Peltier cooling",
        "Peltier element",
        "Peltier module"
      ],
      "section": "topic-thermal",
      "definition": "Solid-state heat pumping by the Peltier effect: current through junctions of semiconductor elements moves heat from one face to the other, and reversing the current reverses the direction. Peltier modules hold small test cells at a set temperature in laboratory fixtures, but their efficiency, usually a coefficient of performance below 1, is too low for vehicle packs.",
      "related": [
        "heat-pump",
        "heat-sink",
        "thermal-management",
        "testing"
      ],
      "url": "https://lemonergy.com/learn/glossary/thermoelectric-cooling/",
      "mentions": []
    }
  },
  "edges": [
    {
      "id": "edge:4783",
      "source": "term:thermoelectric-cooling",
      "target": "topic:topic-thermal",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:4784",
      "source": "term:thermoelectric-cooling",
      "target": "term:heat-pump",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4785",
      "source": "term:thermoelectric-cooling",
      "target": "term:heat-sink",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4786",
      "source": "term:thermoelectric-cooling",
      "target": "term:thermal-management",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4787",
      "source": "term:thermoelectric-cooling",
      "target": "term:testing",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    }
  ],
  "neighbors": [
    {
      "id": "topic:topic-thermal",
      "type": "Topic",
      "label": "Thermal management and heat transfer",
      "properties": {
        "id": "topic-thermal",
        "name": "Thermal management and heat transfer",
        "lede": "How heat is made, moved and removed in cells and packs, and the hardware that keeps a battery at the right temperature.",
        "context": "Select spatial detail for the question.",
        "example": "Equal total heat in different layouts can produce different gradients. Average temperature can miss a hot spot.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/battery-aging/",
        "lesson_label": "Open temperature and aging"
      }
    },
    {
      "id": "term:heat-pump",
      "type": "Term",
      "label": "Heat pump",
      "properties": {
        "id": "heat-pump",
        "name": "Heat pump",
        "aka": [
          "coefficient of performance"
        ],
        "section": "topic-thermal",
        "definition": "A refrigerant circuit run to move heat from a colder place to a warmer one, delivering two to three units of heat per unit of electricity in mild winter conditions. In an electric vehicle it warms the cabin and battery from outside air and the waste heat of the motor and inverter, saving winter range compared with resistive heaters.",
        "related": [
          "refrigerant-loop",
          "battery-heating",
          "preconditioning",
          "range",
          "chiller",
          "thermoelectric-cooling"
        ],
        "url": "https://lemonergy.com/learn/glossary/heat-pump/",
        "mentions": [
          "inverter",
          "electric-vehicle"
        ]
      }
    },
    {
      "id": "term:heat-sink",
      "type": "Term",
      "label": "Heat sink",
      "properties": {
        "id": "heat-sink",
        "name": "Heat sink",
        "aka": [
          "fins",
          "cooling fins",
          "finned heat sink"
        ],
        "section": "topic-thermal",
        "definition": "A metal body, often extruded aluminium with fins, that draws heat from a component and enlarges the surface it can lose that heat from. Fins multiply the area for convection to air; in batteries heat sinks serve air-cooled cell blocks and, above all, the balancing resistors and power switches of the BMS and DC/DC converter.",
        "related": [
          "heat-transfer-coefficient",
          "radiator",
          "passive-thermal-management",
          "cell-balancing",
          "heat-pipe"
        ],
        "url": "https://lemonergy.com/learn/glossary/heat-sink/",
        "mentions": [
          "bms",
          "dc-dc-converter",
          "heat-transfer-modes"
        ]
      }
    },
    {
      "id": "term:thermal-management",
      "type": "Term",
      "label": "Thermal management",
      "properties": {
        "id": "thermal-management",
        "name": "Thermal management",
        "abbr": "TMS",
        "aka": [
          "battery thermal management system",
          "BTMS"
        ],
        "section": "topic-thermal",
        "definition": "Keeping cells in their comfortable range, roughly 15–35 °C, and within a few degrees of each other: liquid cooling plates, refrigerant plates or immersion for heat removal, and heaters or waste heat for warming before fast charging in the cold.",
        "related": [
          "cooling-plate",
          "thermal-interface-material",
          "operating-temperature",
          "heat-generation",
          "preconditioning",
          "temperature-sensor"
        ],
        "url": "https://lemonergy.com/learn/glossary/thermal-management/",
        "mentions": [
          "fast-charging"
        ]
      }
    },
    {
      "id": "term:testing",
      "type": "Term",
      "label": "Cell testing",
      "properties": {
        "id": "testing",
        "name": "Cell testing",
        "section": "topic-testing",
        "definition": "Measuring a cell’s capacity, resistance, efficiency, rate capability, life and safety under defined conditions. Because every result depends on the conditions, a result without its temperature, current and voltage limits is not a result.",
        "related": [
          "capacity-test",
          "cycler",
          "reference-performance-test",
          "abuse-testing",
          "datasheet"
        ],
        "url": "https://lemonergy.com/learn/glossary/testing/",
        "mentions": [
          "rate-capability"
        ]
      }
    }
  ]
}