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How to choose a good set of batteries?

Date: Sep.09.2020

Do you know how to perform regular maintenance on batteries?


After charging the battery, it must be removed from the machine. Regular maintenance should be carried out to ensure cleanliness and dryness. If there is dust on the electrode plates, there will be a short circuit between the guide plates, and the battery will discharge on its own. The surface dirt and oxides on the electrode plate should be removed, and dirty water should also be prevented from flowing into the battery. When the liquid cap vent is blocked, the gas generated by inflation cannot escape.


In severe cases, the battery will also automatically. The ventilation holes need to be kept unobstructed. When the battery is in use, the electrolyte surface will drop due to electrolyte water evaporation and solution overflow. At this time, the electrode plate is easily exposed to air, causing the capacitance of the guide plate to decrease and sulfurize. The height of the electrolyte surface should be checked regularly.


If the electrolyte is impure and industrial sulfuric acid is used instead of chemical sulfuric acid. Using tap water or river water instead of distilled water to add to the battery will self discharge and reduce the battery's lifespan. The specific gravity of the electrolyte will be thicker or thinner when the battery is charged and discharged. When checking the specific gravity of the electrolyte, we can determine the extent to which the battery stores electricity.


How to choose a good set of batteries?


The data collection team can determine data collection requirements and configure corresponding collection tools according to user needs. It usually consists of battery voltage acquisition modules, current, temperature, power, etc., with good isolation between modules and strong insulation. High reliability and safety, data collection can be grouped, each module can collect a certain number of battery voltages, and can be equipped with current and temperature sensors. Modules and system hosts are typically connected using RS-485. The interface board of the protocol processor comes with a protocol processing program that can handle various communication protocols, including: ① encoding, encapsulating, and sending battery voltage, current, temperature, and other information sent by the host to the remote end according to the agreed protocol; ② Send remote control adjustment commands to the host. Real time control, the discharge module can quickly output the DC internal resistance and real-time battery performance of the battery.


Batteries play a very important role in DC power supply equipment and are also a major part of the price of DC power supply equipment. Therefore, choosing high-quality batteries is very important. Choosing high-quality batteries can reduce maintenance workload. And they can work and live. Nowadays, with the development of science and technology, maintenance free lead-acid batteries have been widely used.


The advantage of this type of battery is that it requires minimal maintenance and has almost no problem with its lifespan, but its price is relatively high. The following are some important indicators of maintenance free lead-acid batteries, battery selection? Power capacity; When selecting a battery, it should be based on the required capacity of the device, ranging from small capacity, small capacity 20Ah to large capacity 180Ah. When selecting batteries of the same capacity, their size should be small.


Self discharge rate; The lower the self discharge rate of the battery, the better, and the internal resistance of the battery should be uniform; The internal resistance of a battery is crucial for its charging and discharging, as well as maintaining voltage balance. Keep it between Ω and Ω. The battery internal resistance meter can be used to determine whether the internal resistance of the battery is uniform.


The battery internal resistance meter is a digital storage type multifunctional portable instrument that can quickly and accurately measure the working status of the battery. The battery internal resistance meter monitors the voltage and internal resistance of a single battery online. The battery internal resistance meter can store and process data to warn of battery faults.


The damage to the battery pack is actually only one battery (rarely two) damaged, which also proves that the above analysis is correct and similar. The large discharge capacity (available capacity) of a series battery pack depends on the capacity of the weaker neutral energy battery in the pack. If the power of one battery is discharged, the voltage will drop sharply. Electric vehicles will stop running. At this point, the surplus power from the high-quality batteries in the battery pack cannot be used, and the driving distance of the electric vehicle is shortened. This depends on the nature of the series circuit, regardless of how accurately the battery pack is matched at the factory. In use, the imbalance between batteries is certain. Due to poor performance and excessive discharge of the batteries, a vicious cycle will occur, accelerating damage and causing imbalance. Therefore, the available capacity of the entire battery pack is greatly reduced. The main reason for battery life.

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