Fig. 1-4 Relation between solar panel output characteristics and temperature
1.5 Charging Stages Introduction
As one of the charging stages, MPPT cannot be used alone, but has to be used together
with boost charging, floating charging, equalizing charging, etc. to complete charging
the battery. A complete charging process includes: fast charging, sustaining
charging and floating charging. The charging curve is as shown below:
20℃
50℃
70℃
60℃
40℃
30℃
太
阳
板
温
度
I(A)
U(V)
温度降低，电流不变，
功率增大
温度升高，开路电压减小
With temperature dropping, current
stays stable and power increases
Open-circuit voltage decreases with rising temperature
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