(A) battery repair principle
Rehabilitation methods are electronic, chemical and physical methods. Chemical method is to use a special electrolyte containing “active agent” chemical composition (usually translucent liquid) into the lead-acid battery, by chemical reaction to eliminate lead sulfate crystallization, to promote the smooth flow of battery and regeneration of aging batteries and effectively extend Its service life.
(B) battery maintenance experience and skills
1, charging method: the general vulcanization of light batteries, you can restore by normal charge. In general, the larger the discharge current, the shorter the life of the battery; the deeper the depth of discharge, the shorter the life of the battery. In theory, the battery should be used to avoid deep discharge, should be shallow to ground charge, but some of the curing of the battery has been charged or using a pulse charger (for example, Colin charger) has the same good recovery of a certain The role of capacity.
2, hydrotherapy: heavier curing batteries, “Hydrotherapy” charge and discharge in order to return to normal.
(1) With 500 ml drip bottle capacity of distilled water in hospital dripped with 0.5 ml of analytically pure concentrated sulfuric acid to prepare dilute sulfuric acid electrolyte with a density of about 1.050 for replenishment.
(2) pry open the battery cover (care must be taken to avoid damage), unscrew the single control valve (or remove the rubber cover) to the battery plus 1.050 from the electrolyte 5 ml -15 ml, into the electrolyte After the best battery is placed more than 10 hours so that the infiltration of liquid into the separator to just see the emergence of mobile electrolyte (with a flashlight perpendicular to the hole to see more clearly) or flip the battery 90 degrees, the hole Facing the side, overflowing excess electrolyte, then turning back).
(3) Connect the battery and tester, press the tester “battery repair” function button to repair. Tester automatically into three to six hours desulfurization repair, three hours after the desulfurization time automatically into the working mode “3”, both charge – discharge – charge, the charge current is 3A, the discharge current is 5A, the tester automatically displays discharge Capacity and time, very intuitive. Record the capacity of each time, repeated three or four times until the capacity is no longer up.
3, parallel shunt method: If the repair process battery temperature rise quickly, should reduce the charge and discharge current, then the two batteries can be connected in parallel all the way to the tester circuit, the charge and discharge current of the original 1/2 (Ignoring differences in internal resistance), the effect is also very good. (Note: If there is a big gap between the voltage and capacity in parallel, separate the battery with a diode with a current of more than 6A or pre-charge it separately to prevent the battery with high voltage and high capacity from impacting and affecting the other battery.
4, the battery series repair method: When a single cell nominal voltage is lower than 12V when using this method. For example, rechargeable emergency lights on the market often use 6V4AH, there are 6V7AH battery, and the tester single output is 12V. At this point, two 6V battery access testers can be connected in series for desulfurization repair (Note: 1 should be based on the nominal capacity of the battery to select the appropriate charge and discharge current; 2, such as curing only without the tester charge, not in series can).
5, the output charge method: if the battery is repaired large capacity, such as some cars with 100AH battery, sometimes need to increase the charging current, this time at the same time with two or more outputs of the tester parallel at the same time be repaired On the battery to enhance the charge current.
I found in the actual test according to different batteries, with more than 4 high-precision digital multimeter 20A 20A test, the tester connected to the battery after two parallel current is gradually increased to the sum of the two routes.
6, the output combination of law: If the battery for a long time or self-discharge serious and curing a very serious battery, recharge and charge recovery effect is not obvious enough this method. The method is to use one way to normal charge, with the other way of “battery repair” function in the charge but also to the battery to desulfurization work, is the two output access to the battery is repaired (tester two parallel) but the choice All the way for charging mode, all the way to desulfurization. This method is better for heavily sulfurized cells. The actual use of this method, the best choice for the selection of smaller charge current, such as 700 mA or 3A, because the repair function of superposition, repair negative pulse current is greater than the positive pulse, the choice of 5A is to compensate for the resulting charge current offset .
7, the output series boost method: (Note: you must first open the tester operating mode and start the same function mode after the series, then access the battery.) This method for the battery voltage is 24V or 36V or the entire battery is valid, Tester two or more outputs connected in series after the battery access, two series voltage is 24V, three-way 36V. However, the actual test found that the voltage increased in parallel, but the current is still the size of the selected current, such as two amps are 3 amperes charging mode, the resulting voltage is 24V output, but the current did not increase. Use this method should be noted that the size of the tester selection current should be the same, you must start at the same time. If the series of three-way 36V, charging current should be the same size of each choice and start.
8, heating method: Chen longer life of the battery, a serious dry electrolyte, water and do not want to stand for 24 hours, customers need to repair this method urgently needed. To repair the battery after the water replenishment in order to speed up the electrolyte penetration into the battery (separator – the use of ultra-fine glass fiber electrolyte as a carrier, which can absorb a large amount of electrolyte) and its own chemical reaction, the recharge the battery into 70 degrees Soak in hot water (Note: Do not immerse the battery to prevent short circuit) for more than 1 hour. After that, remove the battery from the hot water for normal repair work.
9, the output trigger method: Continental pigeon tester battery self-diagnostic test. Under normal circumstances, should be repaired batteries access tester should be able to hear a slight “da” sound, indicating that the tester internal relay pull. If the battery voltage is too low, despite the access to the repair instrument, the operation start repair and other corresponding functions, at this time although the red digital display on the panel is normal. Such as digital display charge and discharge alternately flashing, but in the tester self-protection detection function and the corresponding current and voltage output. In this case, the voltage can be higher than 6V (good battery) on the trigger immediately after the positive and negative output line connected to the battery with repair. A simpler way to do this is to prepare a 9V stack battery (a battery commonly used in multimeters that is easy to buy) to trigger the tester’s output. With the tester output positive and negative terminals at the same time contact 9V laminated battery can be positive and negative.
10, cooling method: the battery charging and repair process should always check the temperature of the battery case, the overall temperature exceeds 40 degrees (touch feeling hot), then you must check the charging voltage and current is too high (mainland pigeon tester Voltage, current is very accurate) If normal, to give cool cooling treatment. (1) fan blowing cooling; (2) the battery 2/3 immersed in water cooling, without interruption repair work (such as charge and discharge, desulfurization, etc.); (3) reduce the charging current (such as parallel battery shunt), longer charging time Wait.
11, activated charging method: During storage or use, the battery can be periodically activated and charged, which is called balanced charging, which is very beneficial to prevent the irreversible sulfation of the battery and is very beneficial to the battery life. It is worth promoting. Continental pigeon battery capacity tester for the three independent 12V circuit (36V type) and four 12V independent circuit (48V type), the output current and voltage controlled by the microcomputer, making the output current and voltage is very accurate, can be used as a balanced charger. Because the balance of tandem battery pack is ubiquitous, there will always be “outdated” batteries in use. Under normal circumstances, with the tester on a regular basis to charge the battery – discharge – charging process can achieve the purpose of a balanced charge.
12, deep discharge and overcharge repair method: (Note: suitable for desulfurization voltage drop type tester version).
Repair practice found that some batteries are “stubborn”, there is no short circuit or open circuit, but no matter how many times repair and charge and discharge are not effective, the test capacity is small or even zero. The battery of such illness can take deep discharge and overcharge repair methods. However, deep discharge does not mean simple deep discharge, but clever use of the tester’s potential function immediately after the discharge of the battery to continue depolarization and sulfur removal, so that depth desulfurization while giving the battery depth discharge, the battery voltage continues to decline (When using the tester to run the repair function, the battery voltage will naturally drop slightly) to at least 9.5V. The best in 7.5V the following better. And then charged to 16.2V (Note: to exceed 14.8V must manually open or unplug the battery pressure limiting rubber valve to prevent the battery overcharge caused shell deformation).
13, a small current charge repair method: The tester has 700 mA low current charging (function mode is 0), or default mode 3 charging current selection L for up to 18 hours charge can also be carried out after the water replenishment. This method also has a very good effect on the battery placed too long and severely aged batteries vulcanized.
14, with the tester to determine whether there is an open circuit within the battery. When there is an open circuit inside the battery (most of them cause the battery to leak at night and lead to the corrosion of the connection part and open the circuit). When the tester discharges the battery, the tester inside the tester will make a “creak” sound. In such cases, the tester must be turned off immediately or disconnected from the tester to prevent damage to the equipment.
15, with a tester rough test battery self-discharge and backward battery. With the conventional method, the battery is full for a long time and then recharged by the tester. Normally, the charging is completed for 1 hour under normal conditions. If the charging time exceeds 1 hour, the longer the battery discharges, the more serious the battery discharges or the battery runs backward.
16, general operation: With a long time ago or significantly decreased capacity of the battery, first remove the battery from the battery box, the soldering iron soldering down the series line, separate access to the tester for general charge and discharge, such as the choice of tester Working mode 3, with 2 hours rate of discharge process with a multimeter to measure the voltage of each battery (tester voltage display function is to observe the voltage drop situation), the discharge capacity of the “backward” batteries selected to be processed. First add 1.050 dilute sulfuric acid to just see the flow of liquid appear (with a flashlight to observe the vertical irradiation is very convenient, or the battery flip 90 degrees, the hole facing the side, so that excess electrolyte overflow, and then turn back). Select the tester repair function, after each repair, the battery is allowed to stand for more than 0.5-4 hours and measure the battery voltage, and then repeat the repair function until the capacity is similar or equal. After the repair is completed, the flowing electrolyte is drained off, the cell surface is wiped dry, a raft cap is used, a PVC adhesive (commercially available PVC adhesive – a decorative material) or chloroform (also known as chloroform Shop available) The battery panel bonding.