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Forum 电池数据记录仪
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电池数据记录仪

power_biso
power_biso over 14 years ago

前一段时间想做一个多通道的电压数据记录仪,用来测试电路板的参数,结果上位机软件改着改着居然玩成了电池数据记录仪.

http://tech.dianyuan.com/article-2-8280.html

界面从当初的只记录电压数据,变成了记录电池各种实时参数(包括温度、电流、容量、电量等).界面如下图。

image

这个记录仪是无源的,从RS232取电工作,耗电小于2mA,尺寸只有半个手掌大(6.3cm*5.6cm),与电脑的通信也是通过RS232接口. 基本功能如下:

1、可以同时实时记录8通道电压(比如8节串联电芯的每节电芯电压)、充电电流值、放电电流值、温度值、并对电流和功率进行积分计算出实时容量和电量.电压量程可按需要更改,常用的为20V量程(针对NB电池).

2、可生成充、放电过程中的所有参数曲线(电压、电流、温度、容量、电量)

3、电压量程可调(不调的话为20V),电流量程最大为10A,最大测量误差:0.2% (受A/D转换精度限制,后续我会改进为0.02%的精度)

4、可以用做电压表、电流表、测温仪使用.

5、扫描速度可调,可以从0.5S~5S之间任意设定.

前一段时间想做一个多通道的电压数据记录仪,用来测试电路板的参数,结果上位机软件改着改着居然玩成了电池数据记录仪.

http://tech.dianyuan.com/article-2-8280.html

界面从当初的只记录电压数据,变成了记录电池各种实时参数(包括温度、电流、容量、电量等).界面如下图。

image

这个记录仪是无源的,从RS232取电工作,耗电小于2mA,尺寸只有半个手掌大(6.3cm*5.6cm),与电脑的通信也是通过RS232接口. 基本功能如下:

1、可以同时实时记录8通道电压(比如8节串联电芯的每节电芯电压)、充电电流值、放电电流值、温度值、并对电流和功率进行积分计算出实时容量和电量.电压量程可按需要更改,常用的为20V量程(针对NB电池).

2、可生成充、放电过程中的所有参数曲线(电压、电流、温度、容量、电量)

3、电压量程可调(不调的话为20V),电流量程最大为10A,最大测量误差:0.2% (受A/D转换精度限制,后续我会改进为0.02%的精度)

4、可以用做电压表、电流表、测温仪使用.

5、扫描速度可调,可以从0.5S~5S之间任意设定.

在1.2版本中我将加入输出控制功能,可以控制电源(或充电器)和电子负载,这样可以用来测量电池的循环寿命.

在1.3版本中将加入频率计功能与占空比计算功能.(用来检测充电器电路的PWM)

在1.4版本中将加入信号发生器功能.(纯粹加着玩,有功能不加看着很可惜)

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