diff --git a/yack-web/src/views/dataCenter/history.vue b/yack-web/src/views/dataCenter/history.vue
index 814babb2..62aec07d 100644
--- a/yack-web/src/views/dataCenter/history.vue
+++ b/yack-web/src/views/dataCenter/history.vue
@@ -45,11 +45,12 @@
                         <el-row>
                             <el-col :span="24">
                                 <el-card v-loading="loading" shadow="never">
-                                    <div slot="header">
+                                    <div slot="header" style="display: flex; align-items: center; justify-content: space-between;">
                                         <span>{{ $t('dataCenter.history.384934-10') }}</span>
+                                        <el-switch v-model="independentYAxis" active-text="比例Y轴" inactive-text="共享Y轴" @change="handleYAxisModeChange" />
                                     </div>
                                     <div class="el-table--enable-row-hover el-table--medium">
-                                        <div v-show="devDatas.length !== 0" ref="devLineChart" style="width: 100%; height: 480px; background: #fff"></div>
+                                        <div v-show="devDatas.length !== 0" ref="devLineChart" :style="{ width: '100%', height: devChartHeight + 'px', background: '#fff' }"></div>
                                         <el-empty v-if="devDatas.length === 0" style="height: 480px" :description="$t('dataCenter.history.384934-12')"></el-empty>
                                         <el-table v-show="devTotal > 0" style="margin-top: 50px" :data="devTableList" :border="false">
                                             <el-table-column :label="$t('dataCenter.history.384934-13')" prop="time" width="200" />
@@ -125,10 +126,13 @@
                             </el-form-item>
                         </el-form>
                         <el-card v-loading="loading" shadow="never">
-                            <div slot="header"><span>{{ gwResultTitle }}</span></div>
+                            <div slot="header" style="display: flex; align-items: center; justify-content: space-between;">
+                                <span>{{ gwResultTitle }}</span>
+                                <el-switch v-model="independentYAxis" active-text="比例Y轴" inactive-text="共享Y轴" @change="handleYAxisModeChange" />
+                            </div>
                             <!-- 计算量结果 -->
                             <template v-if="gwResultMode === 'calc'">
-                                <div v-show="gwCalcDatas.length !== 0" ref="gwCalcLineChart" style="width: 100%; height: 480px"></div>
+                                <div v-show="gwCalcDatas.length !== 0" ref="gwCalcLineChart" :style="{ width: '100%', height: gwCalcChartHeight + 'px' }"></div>
                                 <el-empty v-if="gwCalcDatas.length === 0 && !loading" style="height: 480px" description="请选择网关、物模型（计算量）和时间范围后查询"></el-empty>
                                 <el-table v-show="gwCalcTotal > 0" style="margin-top: 20px" :data="gwCalcTableList" border>
                                     <el-table-column label="更新时间" prop="time" width="180" />
@@ -138,7 +142,7 @@
                             </template>
                             <!-- 多设备对比结果 -->
                             <template v-else-if="gwResultMode === 'compare'">
-                                <div v-show="subCompareDatas.length !== 0" ref="subCompareLineChart" style="width: 100%; height: 480px"></div>
+                                <div v-show="subCompareDatas.length !== 0" ref="subCompareLineChart" :style="{ width: '100%', height: subCompareChartHeight + 'px' }"></div>
                                 <el-empty v-if="subCompareDatas.length === 0 && !loading" style="height: 480px" description="请选择网关、物模型（子设备变量）和时间范围，子设备可不选（多设备对比）"></el-empty>
                                 <el-table v-show="subCompareTotal > 0" style="margin-top: 20px" :data="subCompareTableList" border>
                                     <el-table-column v-for="col in subCompareTableColumns" :key="col.prop" :label="col.label" :prop="col.prop" :min-width="col.prop === 'time' ? 180 : 100" />
@@ -147,7 +151,7 @@
                             </template>
                             <!-- 单子设备历史结果 -->
                             <template v-else-if="gwResultMode === 'single'">
-                                <div v-show="gwSingleDatas.length !== 0" ref="gwSingleLineChart" style="width: 100%; height: 480px"></div>
+                                <div v-show="gwSingleDatas.length !== 0" ref="gwSingleLineChart" :style="{ width: '100%', height: gwSingleChartHeight + 'px' }"></div>
                                 <el-empty v-if="gwSingleDatas.length === 0 && !loading" style="height: 480px" description="请选择网关、物模型、子设备和时间范围后查询"></el-empty>
                                 <el-table v-show="gwSingleTotal > 0" style="margin-top: 20px" :data="gwSingleTableList" border>
                                     <el-table-column label="更新时间" prop="time" width="180" />
@@ -209,11 +213,12 @@
                         <el-row>
                             <el-col :span="24">
                                 <el-card v-loading="loading" shadow="never">
-                                    <div slot="header">
+                                    <div slot="header" style="display: flex; align-items: center; justify-content: space-between;">
                                         <span>{{ $t('dataCenter.history.384934-10') }}</span>
+                                        <el-switch v-model="independentYAxis" active-text="比例Y轴" inactive-text="共享Y轴" @change="handleYAxisModeChange" />
                                     </div>
                                     <div class="el-table--enable-row-hover el-table--medium">
-                                        <div v-show="sceneDatas.length !== 0" ref="sceneLineChart" style="width: 100%; height: 480px; background: #fff"></div>
+                                        <div v-show="sceneDatas.length !== 0" ref="sceneLineChart" :style="{ width: '100%', height: sceneChartHeight + 'px', background: '#fff' }"></div>
                                         <el-empty v-if="sceneDatas.length === 0" style="height: 480px" :description="$t('dataCenter.history.384934-12')"></el-empty>
                                         <el-table v-show="sceneTotal > 0" style="margin-top: 50px" :data="sceneTableList" :border="false">
                                             <el-table-column :label="$t('dataCenter.history.384934-13')" prop="time" width="200" />
@@ -378,6 +383,12 @@ export default {
             gwSingleTotal: 0,
             gwSinglePageNum: 1,
             gwSinglePageSize: 10,
+            independentYAxis: true,
+            devChartHeight: 480,
+            gwCalcChartHeight: 480,
+            gwSingleChartHeight: 480,
+            subCompareChartHeight: 480,
+            sceneChartHeight: 480,
         };
     },
     mounted() {
@@ -801,62 +812,119 @@ export default {
             }
             return true;
         },
+        calcChartHeight(seriesCount) {
+            return Math.min(1200, Math.max(480, seriesCount * 14 + 360));
+        },
+        applyIndependentScale(series) {
+            series.forEach((s) => {
+                const nums = (s.data || []).filter(v => v != null && v !== '').map(Number).filter(n => !isNaN(n));
+                if (nums.length === 0) return;
+                const min = Math.min(...nums);
+                const max = Math.max(...nums);
+                const range = max - min;
+                s.data = s.data.map(v => {
+                    if (v == null || v === '') return null;
+                    const num = Number(v);
+                    if (isNaN(num)) return null;
+                    // 映射到 -100 ~ 100，range=0 时固定为 0（居中水平线）
+                    return {
+                        value: range === 0 ? 0 : ((num - min) / range) * 200 - 100,
+                        _original: v,
+                    };
+                });
+            });
+            return {
+                type: 'value',
+                min: -100,
+                max: 100,
+                splitNumber: 4,
+                axisLine: { show: true },
+                axisTick: { show: true },
+                axisLabel: {
+                    formatter: (val) => val + '%',
+                },
+                splitLine: {
+                    show: true,
+                    lineStyle: { type: 'dashed', opacity: 0.5 },
+                },
+            };
+        },
+        independentScaleTooltip() {
+            return {
+                trigger: 'axis',
+                formatter: (params) => {
+                    if (!params || !params.length) return '';
+                    let html = '<div style="font-size:12px">' + params[0].axisValueLabel + '</div>';
+                    params.forEach((p) => {
+                        if (p.data == null) return;
+                        const val = (typeof p.data === 'object' && p.data._original != null)
+                            ? p.data._original : p.value;
+                        html += p.marker + ' ' + p.seriesName + ': <b>' + val + '</b><br/>';
+                    });
+                    return html;
+                },
+            };
+        },
+        handleYAxisModeChange() {
+            this.$nextTick(() => {
+                if (this.activeTab === 'device') {
+                    if (this.devDatas.length) this.drawDevLine();
+                } else if (this.activeTab === 'gateway') {
+                    if (this.gwResultMode === 'calc' && this.gwCalcDatas.length) this.drawGwCalcLine();
+                    if (this.gwResultMode === 'compare' && this.subCompareDatas.length) this.drawSubCompareLine();
+                    if (this.gwResultMode === 'single' && this.gwSingleDatas.length) this.drawGwSingleLine();
+                } else if (this.activeTab === 'scene') {
+                    if (this.sceneDatas.length) this.drawSceneLine();
+                }
+            });
+        },
         drawDevLine() {
-            // 初始化折线图
-            this.charts = this.$echarts.init(this.$refs.devLineChart);
-            this.charts.clear();
-            // 设置折线图数据和样式
-            this.charts.setOption({
-                tooltip: {
-                    trigger: 'axis',
-                },
-                legend: {
-                    align: 'right',
-                    left: '3%',
-                    top: '15%',
-                },
-                grid: {
-                    top: '30%',
-                    left: '5%',
-                    right: '5%',
-                    bottom: '5%',
-                    containLabel: true,
-                },
-                toolbox: {
-                    feature: {
-                        dataView: {},
-                        restore: {},
-                        saveAsImage: {},
+            const series = this.getDevSeries();
+            this.devChartHeight = this.calcChartHeight(series.length);
+            this.$nextTick(() => {
+                this.charts = this.$echarts.init(this.$refs.devLineChart);
+                this.charts.clear();
+                const yAxis = this.independentYAxis
+                    ? this.applyIndependentScale(series)
+                    : { type: 'value', scale: true };
+                const tooltip = this.independentYAxis
+                    ? this.independentScaleTooltip()
+                    : { trigger: 'axis' };
+                this.charts.setOption({
+                    tooltip,
+                    legend: {
+                        align: 'right',
+                        left: '3%',
+                        top: '15%',
                     },
-                },
-                dataZoom: [
-                    {
-                        type: 'inside',
-                        start: 0,
-                        end: 100,
+                    grid: {
+                        top: '30%',
+                        left: '5%',
+                        right: '5%',
+                        bottom: '5%',
+                        containLabel: true,
                     },
-                    {
-                        start: 0,
-                        end: 100,
+                    toolbox: {
+                        feature: {
+                            dataView: {},
+                            restore: {},
+                            saveAsImage: {},
+                        },
                     },
-                ],
-                // 自定义：设置x轴刻度
-                xAxis: {
-                    type: 'category',
-                    boundaryGap: true,
-                    axisTick: {
-                        alignWithLabel: true,
+                    dataZoom: [
+                        { type: 'inside', start: 0, end: 100 },
+                        { start: 0, end: 100 },
+                    ],
+                    xAxis: {
+                        type: 'category',
+                        boundaryGap: true,
+                        axisTick: { alignWithLabel: true },
+                        data: this.devDatas.length !== 0 && this.devDatas.map((item) => Object.keys(item)[0]),
                     },
-                    // 自定义标签
-                    data: this.devDatas.length !== 0 && this.devDatas.map((item) => Object.keys(item)[0]),
-                },
-                // 自定义：设置y轴刻度
-                yAxis: {
-                    type: 'value',
-                    scale: true, //自适应
-                },
-                // 设置数据
-                series: this.getDevSeries(),
+                    yAxis,
+                    series,
+                });
+                this.charts.resize();
             });
         },
         // 获取设备的series
@@ -1168,8 +1236,6 @@ export default {
         },
         drawGwCalcLine() {
             if (!this.$refs.gwCalcLineChart) return;
-            const chart = this.$echarts.init(this.$refs.gwCalcLineChart);
-            chart.clear();
             const ids = this.gwSelectedCalcIdentifiers;
             const times = this.gwCalcDatas.map((d) => Object.keys(d)[0]);
             const series = ids.map((id) => {
@@ -1185,13 +1251,36 @@ export default {
                     }),
                 };
             });
-            chart.setOption({
-                tooltip: { trigger: 'axis' },
-                legend: { data: series.map((s) => s.name) },
-                grid: { left: '3%', right: '4%', bottom: '3%', containLabel: true },
-                xAxis: { type: 'category', data: times },
-                yAxis: { type: 'value', scale: true },
-                series,
+            this.gwCalcChartHeight = this.calcChartHeight(series.length);
+            this.$nextTick(() => {
+                const chart = this.$echarts.init(this.$refs.gwCalcLineChart);
+                chart.clear();
+                const yAxis = this.independentYAxis
+                    ? this.applyIndependentScale(series)
+                    : { type: 'value', scale: true };
+                const tooltip = this.independentYAxis
+                    ? this.independentScaleTooltip()
+                    : { trigger: 'axis' };
+                chart.setOption({
+                    tooltip,
+                    legend: { align: 'right', left: '3%', top: '3%' },
+                    grid: { top: '30%', left: '5%', right: '5%', bottom: '15%', containLabel: true },
+                    toolbox: { feature: { dataView: {}, restore: {}, saveAsImage: {} } },
+                    dataZoom: [
+                        { type: 'inside', start: 0, end: 100 },
+                        { start: 0, end: 100 },
+                    ],
+                    xAxis: {
+                        type: 'category',
+                        boundaryGap: true,
+                        axisTick: { alignWithLabel: true },
+                        axisLabel: { rotate: 30 },
+                        data: times,
+                    },
+                    yAxis,
+                    series,
+                });
+                chart.resize();
             });
         },
         getGwSingleTableList(e) {
@@ -1220,8 +1309,6 @@ export default {
         },
         drawGwSingleLine() {
             if (!this.$refs.gwSingleLineChart || !this.gwSingleDatas.length) return;
-            const chart = this.$echarts.init(this.$refs.gwSingleLineChart);
-            chart.clear();
             const ids = this.gwSelectedSubIdentifiers;
             const times = this.gwSingleDatas.map((d) => Object.keys(d)[0]);
             const series = ids.map((id) => {
@@ -1237,13 +1324,36 @@ export default {
                     }),
                 };
             });
-            chart.setOption({
-                tooltip: { trigger: 'axis' },
-                legend: { data: series.map((s) => s.name) },
-                grid: { left: '3%', right: '4%', bottom: '3%', containLabel: true },
-                xAxis: { type: 'category', data: times },
-                yAxis: { type: 'value', scale: true },
-                series,
+            this.gwSingleChartHeight = this.calcChartHeight(series.length);
+            this.$nextTick(() => {
+                const chart = this.$echarts.init(this.$refs.gwSingleLineChart);
+                chart.clear();
+                const yAxis = this.independentYAxis
+                    ? this.applyIndependentScale(series)
+                    : { type: 'value', scale: true };
+                const tooltip = this.independentYAxis
+                    ? this.independentScaleTooltip()
+                    : { trigger: 'axis' };
+                chart.setOption({
+                    tooltip,
+                    legend: { align: 'right', left: '3%', top: '3%' },
+                    grid: { top: '30%', left: '5%', right: '5%', bottom: '15%', containLabel: true },
+                    toolbox: { feature: { dataView: {}, restore: {}, saveAsImage: {} } },
+                    dataZoom: [
+                        { type: 'inside', start: 0, end: 100 },
+                        { start: 0, end: 100 },
+                    ],
+                    xAxis: {
+                        type: 'category',
+                        boundaryGap: true,
+                        axisTick: { alignWithLabel: true },
+                        axisLabel: { rotate: 30 },
+                        data: times,
+                    },
+                    yAxis,
+                    series,
+                });
+                chart.resize();
             });
         },
         getSubCompareTableList(e) {
@@ -1282,8 +1392,6 @@ export default {
         },
         drawSubCompareLine() {
             if (!this.$refs.subCompareLineChart || !this.subCompareDatas.length) return;
-            const chart = this.$echarts.init(this.$refs.subCompareLineChart);
-            chart.clear();
             const times = this.subCompareDatas.map((d) => d.time);
             const keys = Object.keys(this.subCompareDatas[0]).filter((k) => k !== 'time');
             const series = keys.map((k) => ({
@@ -1292,13 +1400,36 @@ export default {
                 smooth: true,
                 data: this.subCompareDatas.map((d) => d[k]),
             }));
-            chart.setOption({
-                tooltip: { trigger: 'axis' },
-                legend: { data: series.map((s) => s.name) },
-                grid: { left: '3%', right: '4%', bottom: '3%', containLabel: true },
-                xAxis: { type: 'category', data: times },
-                yAxis: { type: 'value', scale: true },
-                series,
+            this.subCompareChartHeight = this.calcChartHeight(series.length);
+            this.$nextTick(() => {
+                const chart = this.$echarts.init(this.$refs.subCompareLineChart);
+                chart.clear();
+                const yAxis = this.independentYAxis
+                    ? this.applyIndependentScale(series)
+                    : { type: 'value', scale: true };
+                const tooltip = this.independentYAxis
+                    ? this.independentScaleTooltip()
+                    : { trigger: 'axis' };
+                chart.setOption({
+                    tooltip,
+                    legend: { align: 'right', left: '3%', top: '3%' },
+                    grid: { top: '30%', left: '5%', right: '5%', bottom: '15%', containLabel: true },
+                    toolbox: { feature: { dataView: {}, restore: {}, saveAsImage: {} } },
+                    dataZoom: [
+                        { type: 'inside', start: 0, end: 100 },
+                        { start: 0, end: 100 },
+                    ],
+                    xAxis: {
+                        type: 'category',
+                        boundaryGap: true,
+                        axisTick: { alignWithLabel: true },
+                        axisLabel: { rotate: 30 },
+                        data: times,
+                    },
+                    yAxis,
+                    series,
+                });
+                chart.resize();
             });
         },
         // 格式化设备列表数据
@@ -1376,63 +1507,36 @@ export default {
             }
         },
         drawSceneLine() {
-            // 初始化折线图
-            this.charts = this.$echarts.init(this.$refs.sceneLineChart);
-            this.charts.clear();
-            // 设置折线图数据和样式
-            this.charts.setOption({
-                tooltip: {
-                    trigger: 'axis',
-                },
-                legend: {
-                    align: 'right',
-                    left: '3%',
-                    top: '15%',
-                },
-                grid: {
-                    top: '30%',
-                    left: '5%',
-                    right: '5%',
-                    bottom: '5%',
-                    containLabel: true,
-                },
-                toolbox: {
-                    feature: {
-                        dataView: {},
-                        restore: {},
-                        saveAsImage: {},
+            const series = this.getSceneSeries();
+            this.sceneChartHeight = this.calcChartHeight(series.length);
+            this.$nextTick(() => {
+                this.charts = this.$echarts.init(this.$refs.sceneLineChart);
+                this.charts.clear();
+                const yAxis = this.independentYAxis
+                    ? this.applyIndependentScale(series)
+                    : { type: 'value', scale: true };
+                const tooltip = this.independentYAxis
+                    ? this.independentScaleTooltip()
+                    : { trigger: 'axis' };
+                this.charts.setOption({
+                    tooltip,
+                    legend: { align: 'right', left: '3%', top: '15%' },
+                    grid: { top: '30%', left: '5%', right: '5%', bottom: '5%', containLabel: true },
+                    toolbox: { feature: { dataView: {}, restore: {}, saveAsImage: {} } },
+                    dataZoom: [
+                        { type: 'inside', start: 0, end: 100 },
+                        { start: 0, end: 100 },
+                    ],
+                    xAxis: {
+                        type: 'category',
+                        boundaryGap: true,
+                        axisTick: { alignWithLabel: true },
+                        data: this.sceneDatas.length !== 0 && this.sceneDatas.map((item) => Object.keys(item)[0]),
                     },
-                },
-                dataZoom: [
-                    {
-                        type: 'inside',
-                        start: 0,
-                        end: 100,
-                    },
-                    {
-                        start: 0,
-                        end: 100,
-                    },
-                ],
-                // 自定义：设置x轴刻度
-                xAxis: {
-                    type: 'category',
-                    boundaryGap: true,
-                    axisTick: {
-                        alignWithLabel: true,
-                    },
-                    // 自定义标签
-                    data: this.sceneDatas.length !== 0 && this.sceneDatas.map((item) => Object.keys(item)[0]),
-                },
-                // 自定义：设置y轴刻度
-                yAxis: {
-                    type: 'value',
-                    boundaryGap: true,
-                    splitNumber: 4,
-                    interval: 250,
-                },
-                // 设置数据
-                series: this.getSceneSeries(),
+                    yAxis,
+                    series,
+                });
+                this.charts.resize();
             });
         },
         // 获取设备的series