效果如图：

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vue3 - ts文件
“echarts”: “^5.4.3”,

import { EChartsOption } from 'echarts'
import * as echarts from 'echarts/core'
import { TooltipComponent } from 'echarts/components'
import { TreeChart } from 'echarts/charts'
import { CanvasRenderer } from 'echarts/renderers'
echarts.use([TooltipComponent, TreeChart, CanvasRenderer])
export const treeOptions: EChartsOption = {
  tooltip: {
    trigger: 'item',
    triggerOn: 'mousemove',
    // 自定义数据
    formatter: function (params) {
      const data = params.data
      const str = `
        <div style="background:#FFF;display: flex;justify-content: space-between; gap:10px">
          <div>
            <p>设备名称：</p>
            <p>设备编号：</p>
            <p>设备状态：</p>
            <p>最新读取时间：</p>
            <p>最新读数：</p>
          </div>
          <div style="text-align: right">
            <p>${data.name || '-'}</p>
            <p>${data.deviceCode || '-'}</p>
            <p style="color:${data.status ? 'green' : ''}">${data.status ? '在线' : '离线'}</p>
            <p>${data.time || '-'}</p>
            <p>${data.value || '0'}kwh</p>
          </div>
        </div>`
      return str
    }
  },
  backgroundColor: '#FFFFFF',
  series: [
    {
      type: 'tree',
      name: '',
      data: [data],
      top: '1%',
      left: '15%',
      bottom: '1%',
      right: '15%',
      emphasis: {
        itemStyle: {
          borderWidth: 5
        }
      },
      label: {
        position: 'left',
        verticalAlign: 'middle',
        align: 'right',
        color: '#fff',
        backgroundColor: '#F0F2F5',
        borderRadius: [0, 0, 4, 4],
        formatter: (params) => {
          return '{name|' + params.name + '}\n{value|' + params.value + '}'
        },
        rich: {
          name: {
            backgroundColor: '#0560D2',
            color: '#fff',
            align: 'center',
            fontSize: '14px',
            padding: [10, 20],
            borderRadius: [4, 4, 0, 0]
          },
          value: {
            align: 'center',
            fontSize: '18px',
            padding: [15, 20],
            color: '#0560D2'
          }
        }
      },
      leaves: {
        label: {
          verticalAlign: 'middle',
          align: 'center'
        }
      },
      symbolSize: 10,
      expandAndCollapse: true,
      animationDuration: 550,
      animationDurationUpdate: 750
    }
  ]
}

处理数据格式如下

const data = {
  name: '配电机房',
  value: 100,
  children: [
    {
      name: '1号配电房(kWh)',
      value: 20,
      deviceCode: 'ELECT001',
      time: '2024-03-18 14:42:44',
      status: true,
      children: [
        {
          name: '1号专变(kWh)',
          value: 20
        }
      ]
    },
    {
      name: '2号配电房(kWh)',
      value: 40,
      collapsed: true, // 如果为 true，表示此节点默认折叠。
      children: [
        {
          name: '2号专变(kWh)',
          value: 20
        },
        {
          name: '3号专变(kWh)',
          value: 20
        }
      ]
    },
    {
      name: '3号配电房(kWh)',
      value: 40,
      children: [
        {
          name: '4号专变(kWh)',
          value: 20
        },
        {
          name: '5号专变(kWh)',
          value: 10
        },
        {
          name: '6号专变(kWh)',
          value: 10
        }
      ]
    }
  ]
}

依据个人项目框架引入，类似如下

<Echart :options="treeOptionsData" :height="780" />

import { EChartsOption } from 'echarts'
import { treeOptions } from './echarts-data'
const treeOptionsData = reactive<EChartsOption>(treeOptions) as EChartsOption
//处理
//treeOptionsData!.series[0].data = ..