Reasons for reverse polarity of lead-acid batteries
Battery maintenance is indispensable. Whether it is manual operation or maintenance or automatic monitoring and management, it is to detect the abnormal failure of individual batteries or the equipment system failure that affects the battery charging and discharging performance in time, and actively take corrective measures to ensure the stability of the power system Operate reliably.
What is the phenomenon of reverse polarity of lead-acid batteries and why? ? How much do you know about this problem? ? Today, the editor of Zhengzhou Kanglida Electronic Power Co., Ltd. will give you some information on this issue, and I hope it will be helpful to you.
The reverse polarity of a lead-acid battery means that the positive and negative poles of the battery have changed. The reverse polarity phenomenon is reflected in two aspects. Reversed. In this case, when the lead-acid battery is filled with acid and the terminal voltage is measured with a voltmeter, the terminal voltage value is less than the sum of the rated voltages of the individual batteries, or the terminal voltage is negative.
"On the other hand, lead-acid batteries are used in multiple series when the capacity is discharged, due to the low capacity of a certain battery (or a single battery) or a complete loss of capacity. When discharging, this battery is quickly discharged and is reverse-charged by other batteries, so that the original negative electrode becomes the positive electrode, and the original positive electrode becomes the negative electrode, and the terminal voltage appears negative.
For the former reverse polarity fault, when measuring the battery terminal voltage (a battery composed of multiple single cells), it can be found that if there is a reverse polarity of a single battery, not only the 2 V voltage of the battery will be lost, but also the increase 2 V reverse voltage, the terminal voltage should be reduced by about 4V.
For example, for a battery with a rated voltage of 12 V, if the terminal voltage is measured to be about 8 V, it means that there is a single cell battery with reverse polarity. If the terminal voltage is about 4 V, it means there are 2 single-cell reverse poles. If the terminal voltage is about -4 V, it means there are 4 single-cell reverse poles. If the terminal voltage is -12 V, it means there are 6 single cells. All grids are reversed.
For the latter type of reverse polarity fault, the terminal voltage value (negative value) varies with the discharge situation. Generally, during testing, the battery should be removed from the discharge circuit in time for this situation to avoid damage to the battery.
Zhengzhou Kanglida Electronic Power Supply Co., Ltd. was established in 2000, specializing in the development, production and sales of 4 series of 2V, 4V, 6V, 12V maintenance-free lead-acid batteries and their electronic chargers. Products are widely used in anti-theft alarm systems, fire alarm systems, building intercom systems, elevator emergency evacuation systems, emergency lights, attendance machines, sprayers, electronic scales, children's electric motorcycles, cartoon inflatables, car washers, table turntables, parking locks, Flashing lights, traffic lights, DC screens, solar energy, wind energy, UPS, EPS and other backup power systems, if you choose a company, you must choose a company with guaranteed reputation and quality. This company has been operating for many years and has many years of experience. Experienced company, so if you have a need for this, you may wish to contact us, I believe it is a good choice.
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