{
  "node": {
    "id": "term:pybamm",
    "type": "Term",
    "label": "PyBaMM",
    "properties": {
      "id": "pybamm",
      "name": "PyBaMM",
      "section": "topic-transport",
      "definition": "An open-source Python package for battery modelling that implements the single-particle, Newman and several degradation models with interchangeable sub-models. It has become the common reference implementation in academic battery modelling.",
      "related": [
        "newman-model",
        "single-particle-model",
        "aging-model",
        "parameterisation"
      ],
      "url": "https://lemonergy.com/learn/glossary/pybamm/",
      "mentions": []
    }
  },
  "edges": [
    {
      "id": "edge:2222",
      "source": "term:pybamm",
      "target": "topic:topic-transport",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:2223",
      "source": "term:pybamm",
      "target": "term:newman-model",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2224",
      "source": "term:pybamm",
      "target": "term:single-particle-model",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2225",
      "source": "term:pybamm",
      "target": "term:aging-model",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:2226",
      "source": "term:pybamm",
      "target": "term:parameterisation",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    }
  ],
  "neighbors": [
    {
      "id": "topic:topic-transport",
      "type": "Topic",
      "label": "Transport and modelling",
      "properties": {
        "id": "topic-transport",
        "name": "Transport and modelling",
        "lede": "How ions move, and the equations and models that describe a cell.",
        "context": "Specify phase, direction and boundaries.",
        "example": "The same concentration difference across 10 μm gives ten times the gradient across 100 μm; at equal D, first-law flux magnitude is ten times greater.",
        "lesson_url": "https://lemonergy.com/learn/transport/ficks-first-law/",
        "lesson_label": "Open diffusion"
      }
    },
    {
      "id": "term:newman-model",
      "type": "Term",
      "label": "Newman model",
      "properties": {
        "id": "newman-model",
        "name": "Newman model",
        "abbr": "P2D",
        "aka": [
          "pseudo-two-dimensional model",
          "Doyle–Fuller–Newman",
          "DFN"
        ],
        "section": "topic-transport",
        "definition": "The standard physics-based lithium-ion cell model: porous-electrode theory across the cell thickness, with solid diffusion solved in a representative spherical particle at every point — hence pseudo-two-dimensional. It predicts voltage from first principles but needs dozens of parameters.",
        "related": [
          "porous-electrode-theory",
          "single-particle-model",
          "butler-volmer",
          "ficks-second-law",
          "parameterisation",
          "pybamm"
        ],
        "url": "https://lemonergy.com/learn/glossary/newman-model/",
        "mentions": [
          "diffusion"
        ]
      }
    },
    {
      "id": "term:single-particle-model",
      "type": "Term",
      "label": "Single-particle model",
      "properties": {
        "id": "single-particle-model",
        "name": "Single-particle model",
        "abbr": "SPM",
        "section": "topic-transport",
        "definition": "A simplified physics model that represents each electrode as one spherical particle and neglects electrolyte gradients. It runs fast enough for a BMS and is accurate at low to moderate currents.",
        "related": [
          "newman-model",
          "equivalent-circuit-model",
          "solid-state-diffusion",
          "bms"
        ],
        "url": "https://lemonergy.com/learn/glossary/single-particle-model/",
        "mentions": [
          "electrode",
          "electrolyte"
        ]
      }
    },
    {
      "id": "term:aging-model",
      "type": "Term",
      "label": "Aging model",
      "properties": {
        "id": "aging-model",
        "name": "Aging model",
        "aka": [
          "degradation model",
          "lifetime model"
        ],
        "section": "topic-transport",
        "definition": "A model that predicts capacity fade and resistance growth as functions of time, temperature, SOC and throughput. Empirical models fit power laws and Arrhenius terms to test data; physics-based models simulate the SEI, plating and cracking mechanisms themselves.",
        "related": [
          "square-root-of-time",
          "arrhenius",
          "calendar-aging",
          "cycle-aging",
          "remaining-useful-life",
          "digital-twin"
        ],
        "url": "https://lemonergy.com/learn/glossary/aging-model/",
        "mentions": [
          "sei",
          "state-of-charge",
          "capacity-fade",
          "impedance-rise"
        ]
      }
    },
    {
      "id": "term:parameterisation",
      "type": "Term",
      "label": "Parameterisation",
      "properties": {
        "id": "parameterisation",
        "name": "Parameterisation",
        "aka": [
          "parameter identification"
        ],
        "section": "topic-transport",
        "definition": "Measuring or fitting the numbers a model needs: OCV curves, diffusion coefficients, exchange current densities, thicknesses and porosities for a physics model, or resistances and time constants for a circuit model. It is usually most of the modelling effort.",
        "related": [
          "newman-model",
          "equivalent-circuit-model",
          "gitt",
          "hppc",
          "electrochemical-impedance-spectroscopy"
        ],
        "url": "https://lemonergy.com/learn/glossary/parameterisation/",
        "mentions": [
          "open-circuit-voltage",
          "diffusion"
        ]
      }
    }
  ]
}