Myth - battery use-Power Kingdom
by：Power Kingdom 2020-08-12
1. Myth 1 battery use. 1 battery charge capacity and engine does not match the selected according to engine types and conditions of use reasonable charge capacity of battery, is to improve the efficiency of storage battery, one of the important ways to prolong its service life. Starter when you start the engine, the battery output current is very big, in the general case for a - 150 200 a, in the low temperature ( - 10℃) When starting the current output up to 250 - a 300A。 If the battery charge capacity and engine don't match, small capacity battery charge, is in the starting resistance is big, the small charge capacity of battery discharge in severe cases, is bound to accelerate active material per unit time and the reaction of sulfuric acid, make the battery temperature rise, plate bending due to overload, resulting in active substances in clumps, plate early damage, which greatly shorten battery life. If the battery charge capacity is big, although not happen this problem, but we can not make full use of the active substance, make the battery economy. So the battery charge capacity, must match the engine. Usually the choice of the battery charge capacity, should according to the starter power, voltage and the load of the electrical equipment. 1. 2 battery in parallel to mix some drivers when starting the engine, due to insufficient original battery to save electricity, you in parallel on an electric battery used jointly. Actually parallel after full charge battery charged will be a lot of power to save electricity shortage of battery charging, falls off easily to plate active substances, affect the service life. At the same time after the battery in parallel starter does not provide a large starting current, more conducive to the engine starting. Accurate method should be to save electricity shortage of battery to be removed, with sufficient electric battery, and then start the engine. 1. 3 series combination used in battery, the battery can appear sometimes the phenomenon of the new and old battery in series, little imagine, this will shorten the service life of battery. Because of the large chemical reactions within the new battery material, high voltage, small internal resistance, The 12 v new battery internal resistance is only 0. 015 - 0. 018Ω ) ; And low voltage of the old battery internal resistance is bigger ( The 12 v battery internal resistance of the old in 0. 085Ω Above) 。 If will be a mixture of old and new battery series, then under the charging status, the old battery charged at the ends of the voltage will be higher than at the ends of the new battery charging voltage, the result is a new battery is not yet adequate but old battery is already too high; In discharge state, because new battery charge capacity than the old battery charge capacity is big, the result of the old battery discharge excessive, and even cause the old battery. So the battery must not be a mixture of old and new. In addition, different charge capacity of battery can not be used in series, because the two different kinds of charge capacity of battery series use, tend to make small charge capacity of battery charging or discharging excessive, shorten its service life. 1. 4 diesel damage of single cell battery still continue to use as diesel engine compression is larger, the required starting torque is bigger also, so generally adopt 24 v voltage starting of diesel engine, in order to improve the rating of the starter, generators and whole vehicle electrical equipment still use 12 v voltage, voltage switch are installed in the diesel electric circuit, therefore, when the starter switch will work two 12 v battery series, with 24 v voltage power supply, in a starting state, switch with two battery recovery for parallel operation, in order to meet the needs of the 12 v voltage. But when one of them a single cell battery damage, some drivers will continue to use after the short circuit, such as two voltage of the battery, can cause larger discharge current and charging current, lead to battery and generator is damaged, so the diesel car battery should be replaced immediately after the single damage or repair, and will continue to use after the single battery short circuit. 1. 5 ignore dredge vent battery can produce hydrogen and oxygen in the process of charging and discharging, especially when charging, water by electrolysis and produce large amounts of hydrogen and oxygen. Battery charging hole cover is used to send out the gas vent. Usually ignore the vent open, causing the air breather block, when the battery in the chemical reaction heat and gas can't send out, can make the battery internal temperature and pressure rising, eventually lead to the battery explosion. So should be paid attention to in the daily maintenance dredging vent, prevent dirt jam vent.