Author ：Iflowpower – Portable Power Station Supplier
The maintenance battery has the characteristics of low price, convenient carrying, large capacity, and application in emergency lights, flashlight, UPS power, motorcycles, electric bicycles, electric tricycles, etc. However, if not used, it will damage the battery, and even scrapped. In fact, as long as it makes appropriate repairs, the capacity of most batteries can wait until a certain degree of recovery.
// First, common problems and processes // 1. However, it is impossible to do not appear at all during charge and discharge process. In order to release the gas, the battery cannot be completely sealed.
Open the upper part of the battery, in order to release the gas, the battery cannot be completely sealed. Open the plastic cover on the upper part of the battery, you can see that there is a plus-filled hole on each small battery, and the moisture of the battery can evaporate through the rubber cap. Even if the battery is not used, the moisture will also evaporate, resulting in a decline in the battery capacity, and the battery will dry and discharge.
Regarding this battery, just add distilled water or pure water to the battery, and then carry out several charge and discharge cycles, most of the capacity of the battery can be restored. Example: A 12v7.2ah battery, the time is not long, charging to 14V, discharge, short circuit current is only 300 mAh.
Uncover the upper cover, the liquid is close to dry, inject distilled water and carry out the charge and discharge cycle, the capacity is restored to 84%, which hasomded. 2, the battery is discharged, the electrolyte has a degradation of the sulfuric acid concentration and the specific gravity of the electrolyte, and the proportion of the time is reduced to 1.11 at 15 ¡ã C.
Generally, the specific gravity is raised, the specific gravity of the summer is filled with 1.25 ~ 1.26, and the winter is 1.
27 ~ 1.28. Because the battery is in a sealed state, when in use, only if the battery is used to determine whether it has been charged well or.
When the 6V and 12V battery is fully charged, the voltages are 6.8V to 7V and 13.6V to 14V, and the voltages of 6V and 12V cells are 5.
3V and 10.6V, respectively. The battery is false or long-term in a semi-firing state, the battery is vulcanized, the vulcanized battery cannot be eliminated by the method of adding distilled water and conventional charging, only when the concentration of the electrolyte sulfuric acid is relatively low, and vulcanization can eliminate.
Repair method: (1) If the battery is not serious, there is not much reduced capacity, and the battery can be charged for a long time (0.05a or less). (2) If the vulcanization of the battery is more serious, it can be charged to the highest voltage (6V battery charge to 7V, 12V battery charge to 14V), with a syringe to extract the electrolyte in the battery, then inject distilled water to dilute electrolyte.
After charging 1 ~ 2 hours, then extract the electrolyte, inject distilled water, repeat the above operation until the specific gravity of the extracted electrolyte no longer increases significantly (general 2 ~ 3 times). At this time, the electrolytic solution is pulled out, and then the proportion of sulfuric acid from 1.25 to 1.
28 is injected according to the ambient temperature, and the electro-liquid is filled with electricity. If the specific gravity is small, the electrolyte can be extracted again and inject sulfuric acid to reach the specific gravity of the electrolyte. Note that the electrolyte in the injection of the battery is not suitable.
If the sponge-like substance in the battery is filled with electrolyte, the excess electrolyte is extracted, and the repair work is completed. Example: A Sonybp603AH battery is a power supply for 3/4-inch camera in an early 1980s, and the battery is seriously affected. After repairing the above method, the capacity is restored to 2.
2ah. 3, the battery is generally consisting of several people batteries (6V batterys with 3, 6), requiring several batteries of series with the same capacity and charge and discharge characteristics. However, the cells and poor quality, the consistency of each battery is relatively poor, after the battery is fully charged, from the entire battery, the voltage has been fully equipped, the battery is poorly charged.
When discharged, the voltage of the battery drops to 5.3V and 10.6V, but the quality of the poor battery has been over.
The poor quality battery performance is relatively poor, in which case use is more prone to vulcanization, causing a decline in battery capacity and. Repair this battery, first find the battery of the poor quality. The method is a portion of the battery connecting bridge (generally in the middle or slightly border of two rubber cap) in the upper cover of the battery.
φ6mm holes, the depth of the hole just drilled onto the leading bridge (not drilling). Then use it on the bridgeφ1.5mm drill bit drill a small hole with a depth of about 2mm ~ 3mm (not to drill).
The copper coils that are about 40 mm long and the copper coils that have been completely plated into the small hole of the connecting bridge, and the molten rosin or asphalt droplets are surrounded by copper coins (due to the corrosion resistance of sulfuric acid, corrosion The copper sulfate has damage to the battery. The tin plating in copper coins can make the contact of copper coins and connect bridges are closely contacted, and the copper coins are not corroded by electrolyte, and the rosin is to further protect the copper money from electrolytic solutions.).
The 12V battery can be opened up to 5 copper coins, which is equal to the positive and negative poles of each small battery, and can be inspected for the voltage and electrolyte of each small battery. Regarding small batteries that have been vulcanized, the above method can be used to repair. 4, some battery connecting bridges or batteries have broken out of the external leads (most cases are the lead-out lines of the positive and negative poles), and the battery cannot work.
Call the battery, only find the part of the break to repair. The above-mentioned method of copper-plated money is used to find a battery that is not normal or the output current is not normal or the output current is used. The fracture point is on the battery.
After found, open a hole on the plastic cover at the break, the size of the hole can be soldered by the soldering iron to the break, should not be too large. After the welding is good, the connection is inspected, and the open hole is closed with plastic or epoxy resin, and then use the above method to perform resurrection, the battery can be re-input. 5, the battery is short-circuited, if there is a short circuit failure, the short-voltage large current can be used to burn the short circuit point.
If the active substance falls off (the brown substance is expressed in the electrolyte), the battery life has been completed, and this kind of battery will not be repaired. However, if only one of the two battery life is terminated, this two batteries can be short-circulated, and the remaining battery can continue to use as a lower voltage battery. // Second, two points show // 1.
Therefore, pay attention to purity when injecting sulfuric acid and water. 2, the specific gravity is an essential tool for repairing the battery, but the commercially available specific gravity measures more electrolyte, it is difficult to use. The author made a micro-simple proportion of the pen cap with a neutral pen and a ballpoint pen: put the specific gravity in pure water, and record the weight of the specific gravity in the water surface, this is the scale of 1.
00; Place a known concentration (you can buy dilute sulfuric acid in the battery store or repair shop, you can accurately measure the specific gravity of sulfuric acid, for example, in the sulfuric acid solution of 1.28), record the specific gravity in the liquid surface; The length of the specific gravity is 1.00 ~ 1.
28 is engraved on paper, and then the scale 28 of 1.00 to 1.28 is equal, and the specific gravity is made.
/ / The battery failure and overhaul // The reasons are not turned without turning the lights: 1. The charger parameters do not match, drift; two, line problems; three, is battery factors: lost water, there is a single short circuit inside the battery, Serious vulcanization. Test method: 1.
Check if the charger is damaged, whether the charging parameters meet the requirements (some people use 48V chargers to charge the 36V battery pack), see if the voltage is high (14.8V / or more) or trickle conversion The current is low 2. Check if the charging circuit fuse is in good contact, the fuse holder has a burnt traces, check whether the connection plug is good, including the socket of the plug of the charger.
3, check if there is dry phenomenon inside the battery, that is, the battery is absent. The dry battery should add pure water or 1.05 g / cm3 dilute sulfuric acid to maintain the charge and discharge, and measure the monobic voltage to see if there is a single short circuit.
4, should also check if the polar is inversely reversible sulfate. If the vulcanization is severe, the internal resistance increases, and the charging will cause serious heat. The non-reversible sulfate of the plate can determine the change of its end voltage by charge and discharge.
At the time of charging, the voltage of the battery has a rapid increase in the voltage, and some single-grid voltage is particularly high, and the voltage drop is particularly fast. In the above case, it can be determined that the battery has irreversible sulfate. If it is found that there is irreversible sulfate, a balanced charging method shall be repaired.
Battery Deformation 1, Cause: The battery deformation is not burst, often has a process. The battery enters high voltage charging regions around 80% of the charge to capacity. At this time, the oxygen is precipitated in the positive electrode, and the oxygen passes through the holes in the partition.
Oxygen resurrection reaction on the negative plate: 2Pb + O2 = 2PBO + heat PBO + H2SO4 = PBSO4 + H2O + heat reaction occurs, when the charging capacity reaches 90%, the rate of oxygen increases, and the negative electrode begins to have hydrogen. The new increase of a large amount of gas opens the battery safety valve, and the gas is essential, and finally it is lost. 2H2O = H2é+ O2éAs the number of battery cycles increases, the moisture gradually decreases.
As a result, the battery is as follows: (1) The oxygen passage becomes smooth, and the oxygen appearing in the positive electrode is easy to reach the negative electrode through the channel. (2) The heat capacity is reduced, and the maximum heat storage is water. After the water loss, the battery heat capacity is greatly reduced, and the heat that occurs makes the battery temperature rise very quickly.
(3) Due to the contraction of ultrafine glass fiber separators in the battery after lossless, it is deteriorated with the adhesion of the positive and negative plate, and the internal resistance is large, and the charge and discharge process is increased. After the above process, the heat inside the battery can only be dissipated by the battery tank. If the heat dissipation is less than the amount of heat generation, the temperature is increased, so that the gas potential of the battery is lowered, the quantity is increased, and the positive electrode is passed through the channel, and the temperature is reacted, and a large amount of heat makes the temperature rise rapidly.
Forming a malignant cycle causes thermal out of control, deformation. 2, the test and handling a set of batteries (3) simultaneously deformed, first conscript. If the voltage is substantially normal.
It should also be measured whether a single voltage determination is shorted, and there is no short circuit, the deformation is caused by heat-failing. Attention should be heard the charging parameters of the charger. The voltage is high (more than 44.
7V) no charge or trickle conversion current is low, and the charger is required to replace the charger. A group of batteries (3 only) is only 1 or 2 modifications, the possibility of the following fault: (1) is inconsistent with the battery capacity and causes certain battery overcharge caused by deformation when charging. Causes of inconsistencies, there may be short-circuit monosuses, or users may discharge battery test or self-discharge, etc.
(2) Is the polar plate in which some batteries have a polarized sulfate, an increasing internal resistance, and charging heat generation deformation. (3) Is the connection caused by the charging heat generation deformation when certain battery wirings. The discharge capacity and self-discharging performance are inspected for unmartbeatted batteries.
If there is no abnormality, it is not a battery problem. Solving the deformation of the battery is: * Effects as much as possible without leakage, to extend or prevent the appearance of heat loss. * Prevent internal short circuit or micro short circuit, and with micro short road tendency.
* In the process of use, it should prevent over-discharge generation, and save the power storage. * Strictly check the charger, do not seriously overcharge. * Charging at high temperatures, must ensure that the battery is dissolute.
Cooling measures should be taken or to decrease the charging time, otherwise it should stop charging. Self-discharge speed fast storage battery in the case of not working, the phenomenon of electricity consumption is called self-discharge. The self-discharge cannot be fully prevented, generally considered 1% to 2% of the capacity of the own capacity per day, such as exceeding this value, is not normal to discharge.
1, self-discharge reasons (1) There is impurities in the plate material or electrolyte, such impurities and or different magazines will have potential differences, forming a closed partial battery, making the battery discharge. (2) The partition is broken, resulting in local short circuit. (3) There is an electrolyte or water on the battery cover, which forms a path between the positive and negative electrodes.
(4) The active substance is falling off, and the plate short circuit causes discharge. (5) The battery is stored for a long time, sinking sulfuric acid in the electrolyte, so that the upper density is small, the lower density is large, causing self-discharge. 2.
Treatment method To reduce self-discharge, the electrolyte must strive to be pure, and the battery cover should be cleaned often, so as to avoid short circuit. If the electrolyte is not pure, it is necessary to discharge the current of 1/10 of the battery with a nominal capacity to 1.7V, and then pour the electrolyte, and clean it with distilled water, and then use pure electrolyte to perform charging.
Reactive substances are separated from 1, the cause of the active substance is out of the initial charging current is too large. Because the reduction of the polar active material is starting at the best grid of the conductive, the large current is charged, and the lead of the sulfate is rapidly reduced, so the lead-away from the gate of sulfate is not asgenized, due to the cellulus of the sulfate Large, so the adhesion between the internal reduced active material is poor, so it is easy to take off from the plate. (2) The charging period is too large.
In this way, a large amount of bubbles appeared, severely impact the surface of the polar plate, so that the reduced relatively soft neutral. (3) Excessive charging. Although the current is not large, the lead-to-ceramidate is all reduced to the lead and lead, and the charging current is all used in the electrolyte.
Although the air bubbles appear too much, but the same pair Surface impact uses to fall off the active substance. (4) The discharge current is too large. At this time, the chemical reaction will cause a plate warp, which causes the active substance to fall off.
2. Treatment method Since the active material is falling off, the plate is shorted, resulting in battery self-discharging, and the battery must be removed, it is recommended to replace it. Capacity reduction - Battery polar plate irreversible sulfate 1, fault phenomenon plate sulfate is a common fault of battery, and many battery failures are also due to this failure.
The important manifestation of the plate sulfate is: the voltage is raised soon, and the temperature is rapid, the temperature is fast, and the capacity is small when the discharge is low. 2. The test and handling of the polar can be attributed as follows: (1) The storage time is too long, the self-discharge rate is high, and the charging is not performed.
(2) Recharge it in time after discharge. (3) Long time is under the state of charge. (4) Over-discharge.
(5) Dry or added electrolyte concentration. When the battery is inversely reversible sulfate, it should be repaired according to the degree of weight. The salinity is lighter, and the average activation charging (ie, balanced charging) can return to normal.
The specific method is as follows: Constant voltage limit charging: The first stage 0.18C2A charges to 2.7V / single charging 12-24 hours.
The first stage of constant current: 0.18C2A is charged to 2.4V / single, the second stage: 0.
05c2a charge 5-12 hours. Salterization, it is necessary to charge the hydraulic charge and discharge, to return to normal. The specific method is: first adding the battery to the low water or density of 1.
05 g / cm3 dilute sulfuric acid to the rich liquid, and then charge the current of 0.05-0.018c2a for about 20 hours, and exhaust flow fluid, and then make capacity test.
Repeat the above operation until the battery capacity is restored. The distance running is not far away - the battery pack is unbalanced 1. The balance of the tandem cell storage group is a common problem.
There is always a backward battery in the process of use. The reason is a variety of diverse, production reasons, and the causes of raw materials, etc. 2, the test and processing of the fault first makes the battery generally charges, and then discharges with 2H rate.
The voltage of the battery is constantly measured during the discharge process, and the backward battery of the discharge capacity is selected. The dilute sulfate of 1.05 g / cm3 is first added to just seeing the flow electrolyte, and then continues to charge 12 to 15 h.
Pay attention to the temperature of the battery should not exceed 50 degrees. After the charging is over, stand in 0.5 ~ 4h, redo 2 h rate discharge.
During the discharge process, the value of the monozee voltage is measured. If the discharge time does not reach the standard or single voltage to 1.6V, the discharge time differs from the normal single-finished battery (the factory is 5 minutes from 5 minutes, six months, six months The phase difference was more than 8 minutes, and the nine months differed for more than 10 minutes.
It was more than 15 minutes from 13 months), and the above-mentioned charge and discharge program operation was also required until the requirements were required. If it is repeated charge and discharge cycle, the battery capacity has no significant increase or still odd from about 0V. This battery is generally short-circuited, or the active material is severely detached softened, severe irreversible sulfate, etc.
, cannot be repaired, should be scrapped. For those who meet the requirements, the battery should continue to be used under the constant pressure 15V / only charge conditions, the electrolyte flowing out, clean the battery surface, the hood valve, use PVC (or chlorogene) binder to stick the panel Okay. Single short circuit 1, the phenomenon of failure is suddenly lost to start-up; when startup, short-circuit single-handed electrolyte spurt.
The reason is: After a single short circuit, the battery resistance is added, the voltage is lowered, and the powerful current cannot be supplied. At the same time, high temperatures in the short circuit have caused the electrolyte from being hot and sprayed. 2, the cause of the fault (1) Decades of active substances.
(2) Impurities used for electrolyte. 3, inspection and processing inspection methods can be used with a neckline, negative pole, no spark or a weak spark, is a short, need to send. Battery hydrating (1) preparation.
Pure water and analysis of pure sulfuric acid to configure the electrolyte electrolyte, the ratio is: 500 ml of pure water, 0.5 ml of pure sulfuric acid. Preparing standard rubber exhaust valve spare.
Tool: Screwdriver, suction (can be replaced with disposable needle tube), transparent polyethylene tube, diameter is suitable for pipetting (needle tube) suction, ABS glue. (2) Smoke the cover of the battery along the exhaust hole. Some battery covers are ABS adhesive, some batteries are buckled.
Note that when you open the cover, don't damage the cover. This is a rubber cap that can see 6 exhaust valves. (3) Open the rubber cap, expose the exhaust hole, and can see the inside of the battery through the exhaust hole.
Some battery exhaust valves can be centered, and some fillers around the rubber caps of some batteries, pay attention to the storage filler. (4) Inhalation of the electrolyte by the dropper insertion, injecting the electrolyte by the exhaust hole. The electrolyte should just cover the polar plate 1 mm.
(5) covers the exhaust hole with the battery of the electrolyte, to prevent dust from falling into the exhaust hole, stand for 12-24 hours, so that the electrolyte is sufficiently penetrate. Observe the electrolyte inside the exhaust hole again, there should be flowing electrolyte (free acid), otherwise the electrolyte should be added. (6) Perform 16.
2 volt pressure limit stream charging under the elongation of the exhaust hole. Preferably, it is best to put the battery in the acid-resistant container to prevent overflowing electrolyte pollution environment. At the battery charging current drops to 400 ~ 300 mA, or the voltage reaches 16.
2V for more than three hours, it is considered that the battery is charged for the first time. (7) After the end of the initial charging, check if there is an electrolyte on the surface of the battery polar plate. If there is no electrolyte, it should be supplemented with the electrolytic solution, and the constant voltage limit stream is charged again; if there is an electrolyte in 6, it is in a straw Agent excess electrolyte.
(8) The 14.8V constant voltage limit is charged, and the charging current drops to 300mA. (9) After covering the exhaust valve, pay attention to restore the filler.
Cover the battery cover, if it is glue, it should be rubbed and bonded. Press the weight on the battery cover, completely solidified, and then carry out 4.8V constant voltage limit, until the charging current drops to 300mA.
(10) Test the battery capacity again to determine whether the battery capacity is restored. The effect is not ideal for battery maintenance (there is no capacity, or no nominal capacity is more than 70%) as follows: 1, the battery positive panel softened, its significant performance is: When the above paragraph (7), it will be found There is a black impurity in the excess electrolyte, if the black impurity is more, it is the positive electrode plate softened, so that the battery is substantially unhappy, only can be scrapped. 2, battery vulcanization, electronically pulse the battery for 24 hours after charging, tested again.
3, 30 min after charging, test the battery voltage, still less than 12V, may be the internal circuit of the battery, the battery should be scrapped. How to solve the problem of vulcanization of electric vehicle batteries Regular maintenance: regularly to professional maintenance point for each three months, timely hydration. These methods are simple and easy, and the economic cost is very low, but it is necessary to strictly abide by it.
Therefore, most of the use of specialized equipment for sulfur maintenance,: 1. This method is fast, fast, can obtain temporary elimination of vulcanization effect, but high voltage large current can remove sulfur can also be deactivated, in the elimination of vulcanization, and the positive panel softening problem, Deadly damage to the battery, through such equipment, the battery is basically scrapped by the battery after sulfur. At present, the professional battery maintenance owner has already understood the hazard of this method.
So, there is a pulse-amplifier and except for sulfur, in fact, the fundamental principle has not changed, just from the constant high voltage constant current to instantaneous Peak high pressure, or will damage polar active substances. 2, select the thus-free charger, there are three working principles, one is the working principle of the working principle of the stage fast exulve sulfur, using high voltage large current pulse, through negative blocking, threatening sulfur, above This method has explained that the battery life will constitute a fatal injury, and has been denied by the market. The second is to use the fast pulse front edge charge and discharge pulse, using the instantaneous peak, interfere with the vulcanization of the battery during the charging process.
The other is a periodic method using 10% to 20% overcharged method, and the cell crystallization of the battery is reduced. 3, using online lead-acid battery delayer online lead-acid battery delayer and battery in parallel, can stop and eliminate vulcanization in twenty-four hours. This method is relatively slow, and the repair time is relatively long.
It is often more than 120 hours, but whether it is charging the discharge process to prevent and eliminate vulcanization, the repair effect is very good. Because the low voltage low current is used, the delayer does not cause a powerful impact on the battery polar plate, which is a user who can hold a constant maintenance, especially the new battery, which is better than quality. Extend the battery life 2 to 5 times, and once in turn, it can always be accompanied by electric vehicle, the next replacement battery, the governery can continue to use, can save a lot of economic costs for users.
Take this method is very large. The first is to bring users real economic benefits, reducing the trouble of users. Second, it is to improve the reputation of the car factory and provide conditions for expanding production.
Third, for the electric car dealers solve the problem of battery warranty, reduce complaints, improve credibility, add profits, and add a sales method for trading in storefront sales. Fourth, it can greatly reduce battery manufacturers' claim costs. Fifth, improve the image of electric bicycles, expand the development of electric bicycle overall market.
Sixth, improve the utilization of the battery, which is conducive to environmental protection. The so many advantages mentioned above are actually just a sentence, that is, the benefits of the battery extended life. In fact, there is no such thing in the actual use, and some people I know have used no effect, and now they are not used, and what can be extended from 2 to 5 times! General battery, take a little attention to the use of methods and precautions, can generally be used in a year and a half, a little better than two years or more, if you say it, you can not use 3 ~ 10 years after you get it.
This is used in electric cars. It is not to do a backup power point light. The electric car has heard of three years of battery, and 10 years have never been.
Unless you charge every day, just run one or two kilometers every day. To put it bluntly, there are just a short high-current discharge circuit in a lot of tour. It is a certain purpose for solving the vulcanization of the battery, but in its view, it is impossible to completely solve the vulcanization of the battery.
Because the root cause of vulcanization of batteries is the use and charging problem, the most fundamental way to solve the vulcanization of the battery is to prevent vulcanization, additional regular maintenance. For individuals, we can pay attention to the methods and precautions to pay attention to the use of the methods, and the problems have been found to solve it with the corresponding method.
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