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Photovoltaic system storage battery charging controller and control method

A charging controller and photovoltaic system technology, applied in different battery charging, photovoltaic power generation, battery circuit devices, etc., to achieve the effect of reducing charging time and prolonging service life

Pending Publication Date: 2019-12-13
HUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The present invention provides a photovoltaic system storage battery charging controller and its control method aiming at the shortcomings of the above-mentioned prior art, which solves the technical problem of reducing the loss of the storage battery and prolonging the service life of the storage battery while ensuring the charging speed of the storage battery

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  • Photovoltaic system storage battery charging controller and control method
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  • Photovoltaic system storage battery charging controller and control method

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Embodiment Construction

[0028] The following describes the implementation of the present invention in detail with reference to the accompanying drawings. The accompanying drawings are for reference and explanation purposes only, and do not constitute a limitation on the scope of protection of the patent of the present invention.

[0029] Such as figure 1 , 5 As shown, the photovoltaic system battery charging controller provided by the embodiment of the present invention is connected to the solar panel and the battery, and includes a charging output module, a current sampling module, an overvoltage control module, a voltage sampling module, a trickle output module and a display module, and a charging output module The charging input terminal of the current sampling module is connected to the solar panel, the charging output terminal of the charging output module is connected to the battery; the current sampling input terminal of the current sampling module is connected to the solar panel, the current limit...

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Abstract

The invention provides a photovoltaic system storage battery charging controller, which comprises a charging output module, a current sampling module, an overvoltage control module, a voltage samplingmodule, a trickle output module and a display module. The charging processes of the three-stage charging method adopted by the invention are respectively high-current constant-current charging, overvoltage constant-voltage charging and overvoltage constant-voltage floating charging. The three-stage charging method can solve the problems of constant-current charging and constant-voltage charging,shorten the charging time of the storage battery, fully charge the storage battery, perform trickle charging while fully charging the storage battery, charge the storage battery with low current, compensate the self-discharge of the storage battery and keep the storage battery in an optimal state. The switching of the three modes is accurately controlled through detection of the voltage of the storage battery and a current closed-loop structure. Meanwhile, the photovoltaic system storage battery charging controller further has a temperature compensation function, so that the storage battery can be charged within a wide temperature range, the loss of the storage battery is reduced while the charging speed of the storage battery is guaranteed, and the service life of the storage battery is prolonged.

Description

Technical field [0001] The invention relates to the technical field of photovoltaic system battery charging, in particular to a photovoltaic system battery charging controller and a control method thereof. Background technique [0002] Solar panels use the photovoltaic effect to convert solar energy into electrical energy for use or storage. The trend of solar applications is to set up an independent photovoltaic system. The independent photovoltaic system is not connected to the grid, so it is necessary to store the excess power in the battery during the day. When the solar panel cannot provide power at night, the battery is used to release the power to the equipment. A storage battery is a device that uses the mutual conversion of electrical and chemical energy to realize the energy storage function. As an important part of the independent photovoltaic system, the battery's service life can be equal to the service life of the independent photovoltaic system. The battery is s...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/35
CPCH02J7/0029H02J7/0047H02J7/35Y02E10/56
Inventor 罗中良罗思欣黄剑锋
Owner HUIZHOU UNIV