{
  "type": "calculator",
  "id": "c-rate",
  "slug": "c-rate",
  "domain": "动力电池",
  "title": "C 倍率与充电时间计算器：电池包电压 / 能量 / 充电倍率",
  "h1": "C 倍率与充电时间计算器",
  "question": "100Ah 电池用 50A 充电是几 C？多久充满？96 串磷酸铁锂是多少伏、多少度电？",
  "summary": "输入单体类型、串数、容量与充电电流，算出电池包标称电压、总能量（度）、充电 C 倍率、属于哪一档充电、以及理论充满时间。公式全部来自本站《动力电池全面技术解析》与《电动汽车充电与高压配电系统解析》的术语定义，页面把算式一并列出，方便讲给学员听。",
  "keywords": "C倍率计算,充电倍率,充电时间计算,电池包电压计算,多少度电,磷酸铁锂串数,三元串数,涓流充电,慢速充电,快速充电,高速充电",
  "updated": "2026-09-26",
  "source": {
    "title": "动力电池全面技术解析 / 电动汽车充电与高压配电系统解析",
    "url": "/report-battery-technology.html"
  },
  "cell_types": [
    {
      "name": "磷酸铁锂 LFP",
      "v": 3.2,
      "src": "/compare/battery-types.html"
    },
    {
      "name": "三元 NCM",
      "v": 3.7,
      "src": "/compare/battery-types.html"
    },
    {
      "name": "镍氢",
      "v": 1.2,
      "src": "/compare/battery-types.html"
    },
    {
      "name": "铅酸",
      "v": 2.0,
      "src": "/compare/battery-types.html"
    }
  ],
  "formulas": [
    {
      "name": "电池包标称电压",
      "expr": "单体标称电压 × 串数",
      "note": "磷酸铁锂 3.2V / 三元 3.7V（取自参数对比表）"
    },
    {
      "name": "总能量",
      "expr": "标称电压 × 容量(Ah) ÷ 1000",
      "note": "Wh = V × Ah；1kWh = 1 度电"
    },
    {
      "name": "C 倍率",
      "expr": "充放电电流 ÷ 额定容量",
      "note": "1C = 1 小时充满"
    },
    {
      "name": "理论充满时间",
      "expr": "1 ÷ C 倍率",
      "note": "单位：小时。恒流段理论值，实际到 80% 后转恒压会变慢"
    }
  ],
  "rate_tiers": [
    {
      "name": "涓流充电",
      "min": 0,
      "max": 0.1,
      "desc": "＜0.1C",
      "src": "/report-charging-distribution.html"
    },
    {
      "name": "慢速充电",
      "min": 0.1,
      "max": 0.2,
      "desc": "0.1C ~ 0.2C",
      "src": "/report-charging-distribution.html"
    },
    {
      "name": "快速充电",
      "min": 0.2,
      "max": 0.8,
      "desc": "0.2C ~ 0.8C",
      "src": "/report-charging-distribution.html"
    },
    {
      "name": "高速充电",
      "min": 0.8,
      "max": null,
      "desc": "＞0.8C",
      "src": "/report-charging-distribution.html"
    }
  ],
  "reading": [
    {
      "title": "为什么先算电压和度数",
      "text": "接车第一步不是拆，是先知道这台车是多少伏的平台、多少度电。96 串磷酸铁锂是 307V，100Ah 就是 30.7 度——这两个数字决定了后面所有高压作业的安全等级。"
    },
    {
      "title": "C 倍率是「快慢」的唯一可比口径",
      "text": "同样是 50A，对 100Ah 的包是 0.5C，对 200Ah 的包只有 0.25C。所以判断充电快慢不能看电流，要看 C 倍率。"
    },
    {
      "title": "理论时间 ≠ 实际时间",
      "text": "公式算的是恒流段理论值。原文的术语表写明：恒流用于充电第一阶段，电量到 80% 后转恒压充电。所以实际充满时间会比理论值长，尤其是最后那段。"
    }
  ],
  "notes": [
    "所有公式与倍率档位定义取自本站《动力电池全面技术解析》术语表与《电动汽车充电与高压配电系统解析》充电倍率分级表，未引入原文之外的公式。",
    "单体标称电压取自本站《动力电池类型参数对比》表。",
    "本工具只做算术换算，不做车型适配判断。实际充电电流受 BMS 策略、温度、桩能力限制，以车辆维修手册与诊断仪数据为准。",
    "高压作业必须先断电、验电、放电；本工具的任何结果都不能替代安全规程。"
  ],
  "sourceUrl": "https://loudilaoshi.com/report-battery-technology.html",
  "canonical": "https://loudilaoshi.com/tools/c-rate.html",
  "license": "转载或引用请注明作者「娄迪老师」与原文链接"
}