Solar charge control method
A solar energy and charging device technology, applied in the field of solar charging, can solve the problems of unsatisfactory overall charging efficiency, poor efficiency, and negative effects on life of the battery, and achieve the effects of fast charging speed, less gas evolution, and sufficient charging capacity
Active Publication Date: 2012-11-21
太湖县宏霞家庭农场
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Problems solved by technology
[0012] 1. The comprehensive efficiency of battery charging is not ideal;
[0013] 2. The PWM mode that can improve the charging efficiency in some aspects, its negative discharge current has a negative effect on the life of the battery, but its efficiency is the worst
Method used
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[0036] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.
[0037] An embodiment of the present invention is as follows:
[0038] A method for controlling solar charging. At least two solar charging devices charge a storage battery that drives load equipment, and each solar charging device can charge the storage battery in an on-off mode or a pulse mode. The method comprises the steps of:
[0039] On-off charging steps: All the solar charging devices of the road adopt the on-off mode to charge the battery;
[0040] Mixed charging step: when the state of the storage battery exceeds the first switching threshold, some of the solar charging devices switch to pulse mode charging to meet the sum of the charging currents of the other part of the solar charging devices that still use the on-off mode, which is greater than the current condition of the load equipment;
[0041]Pulse mode charging control step...
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The invention provides a solar charge control method, which comprises: a charge on-off step that all paths of solar charging units adopt an on-off mode to charge a rechargeable battery; a mixed charging step that a part of paths of solar charging units are switched to a pulse mode to charge the rechargeable battery when the state of the rechargeable battery exceeds a first switching threshold so as to meet the condition that the summation of the charging current of the other part of paths of solar charging units still adopting the on-off mode is greater than the current of load equipment; anda pulse mode charging control step that the output of the solar charging units adopting the pulse mode to charge the rechargeable battery is reduced when the state of the rechargeable battery exceedsa second switching threshold so as to meet the condition that the summation of the charging current of the solar charging units still adopting the on-off mode is greater than the current of the load equipment, and that the output of the corresponding solar charging units adopting the pulse mode to charge the rechargeable battery is cut off until the state of the rechargeable battery exceeds a third switching threshold.
Description
technical field [0001] The invention relates to solar charging technology, in particular to a method for controlling solar charging. Background technique [0002] Common solar controllers use programmable technology to control the way the solar charging device charges the battery or drives the load. See figure 1 , Cypress's PowerPSoC series solar controllers integrate programmable SoC (System on Chip, system-on-chip) technology, power electronic controllers and switching devices. It can replace the traditional MCU, system IC and a large number of discrete components around it, making the PowerPSoC solution easy to use in driving various loads, including charging batteries. Among them, PowerPSoC is a solar controller. [0003] There are three main control methods of solar controllers currently on the market: on-off mode, PWM type (pulse type), and MPPT type (maximum power tracking type). [0004] Among them, the on-off mode is close to the constant current type to charge ...
Claims
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IPC IPC(8): H02J7/00
Inventor 吴连日
Owner 太湖县宏霞家庭农场