The battery is a part of the automobile essential, can be divided into the traditional lead-acid battery and maintenance free battery. Since the battery use lead calcium alloy gate frame, so that the charge generated during the decomposition of water less, water evaporation is also low, coupled with the shell adopts sealing structure, released from the acid gas is rarely, so it has compared with traditional batteries, do not need to add any liquid, on the storage of the electricity wiring pile head, advantages long time. Many people know the role of the battery and method of use, but there is the wrong way. Here we introduce the battery using the four error method.
1 mix batteries in series
In the battery use, sometimes there will be new, old batteries used in series phenomenon, however, this approach will shorten battery service life. Because the chemical reactions within the material more new battery, end high voltage, small internal resistance (12V new battery internal resistance of only 0.015-0.018 omega); and the old battery terminal voltage is low, the larger resistance (resistance 12V old battery in a 0.085 or above). If the new, the old mix batteries in series, then the charge state, the charging voltage at both ends of the old battery charging voltage will be higher than the new battery ends, resulting in a new battery charge has not enough and the old battery charge is already too high; in the discharge state, the new battery charge capacity than the old battery charge capacity is large, the results the old battery caused by excessive discharge, even cause the old battery reverse polarity. Therefore, the battery must not be new, old mix.
2 diesel car battery cell damage still continue to use
Because the diesel engine compression ratio, the required starting torque is large, so the general diesel engines are used 24V voltage start, in order to improve starter power than electrical equipment, but the generators and the whole car still use 12V voltage, so the diesel car circuit equipped with a voltage switch, starting switch two 12V batteries in series will work in the voltage of the power supply, 24V, starting at non, switch and two batteries to recover to work in parallel, to meet the needs of the 12V voltage. But when one a single battery is damaged, some drivers will continue to use the short circuit, such as two battery voltage range, will result in a larger discharge current and charging current, resulting in damage to the battery and generator, so the diesel car, the battery cell damage immediately after the replacement or repair, and may not be continue to use the single cell battery short circuit.
3 battery charge capacity and engine mismatch
According to the rational use of the battery charge capacity engine type and the conditions of use, is to improve the economy of the battery, prolong the service life of one of the important ways. The starter when starting the engine, battery current output is big, in the general case for the 150A-200A, in the low temperature (-10 DEG C) starting output current up to 250A-300A. If the battery charge capacity and engine mismatch, the battery charge capacity is too small, start-up resistance in large, small capacity of the battery charge and discharge in the case of severe, active material and sulfuric acid unit of time is bound to accelerate the reaction, so that the battery temperature rise due to overload, plate bending, resulting in a large number of active substances the early damage of exfoliated, plate, thereby greatly shorten the battery life. If the battery charge capacity is too large, although not the occurrence of the above problems, but can not make full use of its active substance, make the battery of economic decline. Therefore, the battery charge capacity, must be matched with the engine. Usually, the battery charge capacity choice, should be based on the starter power, voltage and electrical equipment load and.
4 battery parallel mix
Some drivers when starting the engine, save for the original battery power is insufficient, in parallel on a fully charged battery in common use. In fact, after fully charged batteries in parallel with the charging current will be great to keep the battery shortage of charging, extremely easy to cause the plate active material shedding, affect its service life. At the same time the battery in parallel and can not provide a great starting current to the starter, but not conducive to starting the engine. The correct approach should be to keep the battery shortage removed, put on a fully charged battery, and then start the engine.