电源管理
今天我想分享的是一个单片机做的电源控制管理系统。
项目需求:两个主蓄电池,两个电池不能同时充电或同时放电。故有了以下的电路图。
为了防止控制混乱引起短路烧坏电源或充电端,引进互锁系统
KM1 |
KM4 |
KM3 |
KM2 |
状态 |
|||||||||
C1 |
W1 |
C2 |
W2 |
W1 |
W2 |
C1 |
C2 |
Charge1 |
Charge2 |
Work1 |
Work2 |
STATE |
|
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
1 |
W2 |
|
0 |
1 |
0 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
W1 |
|
0 |
1 |
0 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
W2 |
|
0 |
1 |
0 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
W1 |
|
0 |
1 |
1 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
C2 |
|
0 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
—— |
关机 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
C2W1 |
4 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
W1 |
1 |
1 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
1 |
W2 |
3 |
1 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
1 |
C1W2 |
2 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
—— |
|
1 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
C1 |
|
1 |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
C2 |
|
1 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
C1 |
|
1 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
C2 |
|
1 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
C1 |
有上图状态表可得,不会出现同时充放电的状态,且存在既不充电也不放电的状态。
如图选取关机状态,两个电源既不充电也不放电。
选取1状态,电源1供电;选取2状态为1电源充电,2电源供电;选取3状态为,2电源供电;选取4状态为2电源充电1电源供电。
选取C1为KM1的常开,则W1为KM1的常闭;
选取C2为KM4的常闭,则W2为KM4的常开:
选取W1为KM3的常开,W2为KM3的常闭
选取C1为KM2的常闭,则C2为KM2的常开。
如此则目的达到。