Solar charging control circuit
A charging control and solar energy technology, applied in the direction of circuit devices, battery circuit devices, collectors, etc., can solve the problems of prolonging the service life of lead-acid batteries, untimely battery charging detection, and reducing service life, so as to avoid overcharging , rapid response, and the effect of avoiding redundant steps
Inactive Publication Date: 2013-12-18
HANGZHOU DIANZI UNIV
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Problems solved by technology
Therefore, the conventional constant voltage and constant current charging methods cannot achieve the purpose of prolonging the service life of lead-acid batteries.
At present, the monitoring device for solar energy charging the battery is not perfect and mature, and the charging detection of the battery is not timely. It is still necessary to manually judge whether the battery is fully charged regularly based on experience, which will easily cause the battery to be overcharged and reduce its service life.
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[0012] The present invention will be further described below in conjunction with the accompanying drawings.
[0013] Such as figure 1 The solar charging control circuit shown includes a solar panel U0, a polarity protection diode D0, a part of the solar charging control circuit, and a battery charging control circuit.
[0014] The positive pole of the solar battery U0 is connected to the positive pole of the polarity protection diode D0, and the negative pole of D0 is connected to the positive pole "+" of the storage battery BT1. The polarity protection diode D0 is used as polarity protection for the entire circuit to prevent damage to circuit components when the input polarity is reversed. In case the input circuit is short-circuited, D0 will also prevent the battery BT1 from short-circuiting and discharging due to the reverse voltage at both ends. Since ordinary rectifier diodes have a voltage drop of 0.50~1V, this is a large voltage drop loss for the solar panel U0. There...
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The invention discloses a control circuit which charges a storage battery with solar energy. In the present market, a mature storage battery charging protection circuit does not exist, charging quantity of the storage battery is not monitored in time, the storage battery is excessively charged easily, and consequently the service life of the storage battery is shortened. The solar charging control circuit comprises a solar battery panel, a polarity protecting diode D0, a voltage comparator, a current comparator and a storage battery charging and discharging control switch circuit. The voltage comparator is used for controlling the magnitude of charging voltage. The current comparator is used for controlling the magnitude of charging currents. The charging control circuit controls frequent switching of an electronic switch field-effect tube Q1 through the voltage comparator and the current comparator according to the strength of the solar panel and the demanding degree of the storage battery for charging, thus, the aim of controlling the charging currents and the charging voltage is achieved. The solar charging control circuit can effectively solve the problem of excessive charging of the storage battery and greatly prolong the service life of the storage battery.
Description
technical field [0001] The invention relates to a solar charging control circuit, in particular to a circuit, in particular to a control circuit for solar energy charging a storage battery. Background technique [0002] The so-called solar battery application actually uses the unstable electric energy generated by the solar panel to charge the battery through complex current and voltage control, so that the battery can store energy relatively stably for the stable use of the load. Batteries are delicate devices, improper charging will shorten their service life, or even damage them. Therefore, the conventional constant voltage and constant current charging method cannot achieve the purpose of prolonging the service life of the lead-acid battery. At present, the monitoring device for solar energy charging the battery is not perfect and mature, and the charging detection of the battery is not timely. It is still necessary to manually judge whether the battery is fully charged...
Claims
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IPC IPC(8): H02J7/00
Inventor 杨成忠朱亚萍刘文亮
Owner HANGZHOU DIANZI UNIV