Standard clamp rail type intelligent photovoltaic battery pack string monitoring device

A photovoltaic battery pack and monitoring device technology, which is applied in the monitoring of photovoltaic systems, photovoltaic power generation, photovoltaic modules, etc., to achieve the effects of small space occupation, simple installation, and overcoming poor consistency

Active Publication Date: 2014-05-07
SHENZHEN GOLDEN HIGHWAY TECH CO LTD
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Problems solved by technology

[0003] The embodiment of the present invention provides a standard rail-type intelligent photovoltaic battery string monitoring de

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  • Standard clamp rail type intelligent photovoltaic battery pack string monitoring device
  • Standard clamp rail type intelligent photovoltaic battery pack string monitoring device

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Embodiment Construction

[0009] An embodiment of the present invention provides a standard rail-type intelligent photovoltaic battery string monitoring device to solve the above-mentioned various defects existing in the measurement and control module of the existing photovoltaic combiner box. In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0010] An embodiment of the present invention provides a standard rail-t...

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Abstract

The invention discloses a standard clamp rail type intelligent photovoltaic battery pack string monitoring device. The device adopts a milliohm divertor and one sampling channel of a dual-channel analog-digital converter ADC to sample the stringing current, adopts a voltage sampling resistor and another sampling channel of the dual-channel analog-digital converter ADC to sample the stringing voltage, adopts a build-in temperature sensor of the dual-channel analog-digital converter ADC to measure the working temperature of the fuse, and adopts a self-excited isolated power source to supply power. The device of the embodiments of the invention can be used to overcome various defects in the prior art, can be used to monitor various parameters, such as the photovoltaic battery pack string voltage, current, fuse state, temperature, etc., and has advantages of high acquisition accuracy, no current measurement zero offset, small temperature drift, high accuracy voltage measurement, small occupied space and easy installation.

Description

technical field [0001] The invention relates to the technical field of circuit and photovoltaic battery string monitoring, in particular to a standard rail-type intelligent photovoltaic battery string monitoring device. Background technique [0002] At present, the measurement and control modules of photovoltaic combiner boxes on the market usually use Hall current transformers (CT) to measure the current of photovoltaic cell strings, and, in order to reduce costs, a single cpu system is used to pass the output of the forward channel current transformer through the electronic Switching sampling, because CT manufacturers often reduce the cost by reducing the quality of components in order to increase price competitiveness and obtain more profits, resulting in poor consistency of CT on the same measurement and control module, large temperature drift, and serious zero point offset. After some CTs have been used for a period of time, the measurement is inaccurate, which makes th...

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Application Information

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IPC IPC(8): H02S50/10
CPCY02E10/50
Inventor 李仲卿翦志强曹红喜吴才利韦振杰
Owner SHENZHEN GOLDEN HIGHWAY TECH CO LTD
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