How long will lead-acid batteries last? How do we maintain them?

With the development of new energy vehicles, electric vehicles gradually appear in people's life. The electric car batteries are all electric vehicle power source.

With the development of new energy vehicles, electric vehicles is gradually appear in people's life, that electric cars are going to have to say which used batteries, electric vehicle batteries are all electric vehicle power source, so a lot of car companies in the development of electric vehicles when the first is to upgrade the battery, development to today, the types of batteries is also gradually increased, small make up today to give everybody introduction is one of them, lead-acid battery, the battery life is how long? How to maintain? Small make up to introduce to you.

Lead-acid battery is introduced: introduction

Lead-acid battery (VRLA), is a kind of electrode is mainly composed of lead and its oxide, battery electrolyte is sulfuric acid solution. Lead-acid battery discharge condition, the positive main ingredients for lead dioxide, negative main ingredients to lead; Charging status, the main components are all lead sulfate is negative.

A single case of lead-acid battery nominal voltage is 2.0 V, can discharge to 1.5 V, can charge to 2.4 V. In the application, often together with six single lead-acid batteries of nominal is 12 v lead-acid battery, and 24 v, 36 v, 48 v, etc.

Lead acid battery is introduced: life

1, the depth of discharge

Discharge depth is used in the process of discharge to what extent has stopped.100% depth refers to release all capacity. Lead-acid battery life is highly affected by the depth of discharge, the focus of the design considerations is deep cycle use, shallow recycled or floating use. If the light cycle used for deep cycle batteries, lead-acid battery will fail soon.

Because of the positive active material of lead dioxide itself in combination with each other not firm, discharge generated when lead sulfate, charging back as the lead dioxide, lead sulfate molar volume is larger than lead oxide, when the discharge volume expansion of active material. If a mole lead oxide into a mole lead sulfate, volume increased by 95%.Such repeated contraction and expansion, makes the combination between lead dioxide particles gradually relaxed, easy to fall off.If a mole only 20% of active material of lead dioxide discharge, the degree of the contraction and expansion is greatly reduced, the binding force damage change slowly. Therefore, the deeper the depth of discharge, the shorter its cycle life is.

2, the degree of charging

Charging with a large number of gas evolution, then the impact of the positive plate active substances by gas, the impact will promote active material loss; In addition, the positive plate grid alloy also suffered serious anodic oxidation and corrosion, so the battery charging will make the application period shorten.

3, the influence of the temperature

Lead-acid battery with temperature rises and prolong life. Between 10 ℃ ~ 35 ℃, every increase 1 ℃, increase about 5 ~ 6 cycle, between 35 ℃ ~ 45 ℃, higher per 1 above 25 ℃ can prolong life cycle, above 50 ℃ for negative sulfide capacity loss reduces the longevity.

Battery life in a certain temperature range increases with temperature rise, because the capacity increases with temperature rise. If the discharge capacity kept constant, when the temperature the discharge depth is reduced, life has extension.

Lead-acid battery is introduced: maintenance

Lead-acid battery no memory, is a rapid decline in the capacity of the main battery sulfide and "water" and "loss of electricity" and some other reasons, the most afraid of be battery under voltage, "kui power" battery "kui electricity", often the battery plate is easily injured, reality is as high as 70% of the electric vehicle battery capacity to reduce electrical plate by discharge of strong current (starting current) strain (electric motorcycle in particular), caused by plate electrode strain belongs to battery physical injury, unable to repair the damage. So "charging car every day, every day", guarantee the battery has sufficient voltage becomes inevitable.

Users think generally, maintenance-free battery need not add water, actually this is wrong. Maintenance-free battery produces in the process of charging and large current discharge quantity of heat, heat is there will be water evaporation, while water evaporation process is slow, but over time, the amount of accumulated water evaporation can be reckoned. Therefore should give the battery hydrating every six months or so, so that the service life of the battery is extended.

Those above are the introduction of the lead-acid battery life and its maintenance way. In fact, lead-acid battery or other battery life is just a relative time. Accurately, the life of the battery is related to use method, which has a certain relationship with the consumers. The use of many wrong ways can make the battery scrap in advance. Hope the introduction can help you a lot.

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