优化代码 figure(5) for j=1:length(B5.V_M_CH) %充电时电池端电压 plot(1:length(cell2mat(B5.V_M_CH(j))),cell2mat(B5.V_M_CH(j))); hold on grid on end figure(6) for j=1:length(B5.V_M_DCH) %放电时电池端电压 plot(1:length(cell2mat(B5.V_M_DCH(j))),cell2mat(B5.V_M_DCH(j))); hold on grid on end figure(7) for j=1:length(B5.V_CH_CH) %充电时在充电器上测得的电压 plot(1:length(cell2mat(B5.V_CH_CH(j))),cell2mat(B5.V_CH_CH(j))); hold on grid on end figure(8) for j=1:length(B5.V_CH_DCH) %放电时 负载时测得的电压 plot(1:length(cell2mat(B5.V_CH_DCH(j))),cell2mat(B5.V_CH_DCH(j))); hold on grid on end

可以通过使用subplot函数将这些图形合并到一个窗口中，并且不需要重复的代码。代码如下：

figure(1)

subplot(2,2,1)
for j=1:length(B5.V_M_CH)  %充电时电池端电压    
    plot(1:length(cell2mat(B5.V_M_CH(j))),cell2mat(B5.V_M_CH(j)));    
    hold on     
    grid on 
end
title('充电时电池端电压')

subplot(2,2,2)
for j=1:length(B5.V_M_DCH)  %放电时电池端电压    
    plot(1:length(cell2mat(B5.V_M_DCH(j))),cell2mat(B5.V_M_DCH(j)));    
    hold on     
    grid on 
end
title('放电时电池端电压')

subplot(2,2,3)
for j=1:length(B5.V_CH_CH)  %充电时在充电器上测得的电压    
    plot(1:length(cell2mat(B5.V_CH_CH(j))),cell2mat(B5.V_CH_CH(j)));    
    hold on     
    grid on 
end
title('充电时在充电器上测得的电压')

subplot(2,2,4)
for j=1:length(B5.V_CH_DCH)   %放电时 负载时测得的电压    
    plot(1:length(cell2mat(B5.V_CH_DCH(j))),cell2mat(B5.V_CH_DCH(j)));    
    hold on     
    grid on 
end
title('放电时负载时测得的电压')

这段代码将四个图像合并到一个窗口中，并且使用subplot函数将它们分成四个等大小的部分。每个子图都有一个不同的标题，可以更好地展示数据。