Detection and monitoring method of lead-acid storage battery
A lead-acid battery, detection method technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of low voltage value, increase the difficulty and workload of detection, misjudgment, etc., and achieve accurate and scientific calculation and detection. And the monitoring method is simple and easy to implement
Inactive Publication Date: 2013-06-05
郝勇
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Problems solved by technology
This traditional method of testing batteries with an additional load has the following disadvantages: Since the test principle is simple discharge, if the test object has been partially discharged, it will inevitably lead to a low voltage value of the measurement result, resulting in misjudgment; for the same battery, Unable to repeat the measurement consecutively and get the same result
[0005] However, in the solar photovoltaic system, a large number of lead-acid batteries used will undoubtedly increase the difficulty and workload of detection, and it is also easy to misuse during manual operation.
And many photovoltaic systems bury the battery underground, which greatly increases the difficulty of detection
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Embodiment 1
[0016] The invention proposes a detection and monitoring method for lead-acid batteries, which is used to detect lead-acid batteries used in photovoltaic systems. The invention is different from traditional discharge detection methods and conductivity meter detection methods. The measurement method proposes a new method, which can be integrated into the photovoltaic system controller as a program algorithm, and provides feedback of detection results to users or technicians through the host computer to detect and monitor the state of the battery.
[0017] The present invention uses the controller of the photovoltaic system (with a single-chip microcomputer as the processor) to calculate the current internal resistance and discharge time by detecting the voltage and current when the battery discharges the load each time, and compares the previously set parameters (according to the battery) The method of judging the state of the battery by comparing with the actual performance set...
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The invention relates to the technical field of solar photovoltaic utilization, in particular to a detection and monitoring method of a lead-acid storage battery used in a photovoltaic system. The detection and monitoring method of the lead-acid storage battery includes the following steps: a voltage and current sensor is used for detecting current and voltage of the storage battery on each discharging; a controller of the photovoltaic system is used for computing the current internal resistance RX of the storage battery and discharging time TX; the RX is compared with a preset internal resistance value R, if RX <=R, detection is carried out when the storage battery discharges at the next time; if RX >R, then the TX is compared with a preset discharging time T, and if the TX > T, the storage battery is in a good state and replacement is not needed; and if the TX <T, the storage battery is lost heavily and replacement is needed. The detection and monitoring method of the lead-acid storage battery is simple, easy to operate and accurate and scientific in computing, and can be widely used in detection and monitoring of storage battery states.
Description
technical field [0001] The invention relates to the technical field of solar photovoltaic utilization, in particular to a method for detecting and monitoring lead-acid batteries used in photovoltaic systems. Background technique [0002] The biggest characteristic of lead-acid batteries is: with the use of the battery, the battery gradually ages. When the battery capacity decreases to its original rated capacity, the battery capacity may drop in a diving manner. At this time, although the battery may still provide A certain amount of energy may be wasted at any time. [0003] The traditional method of judging the health status of the battery is to discharge, and the current actual capacity of the battery is detected by discharging, so as to judge the health status of the battery. This traditional method of testing batteries with an additional load has the following disadvantages: Since the test principle is simple discharge, if the test object has been partially discharged,...
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IPC IPC(8): G01R31/36
Inventor 张聪林郝勇郝婷婷李涛
Owner 郝勇