Can lithium batteries be repaired? The lithium battery repair method is a complete list. How to do when the lithium battery is broken? Can be repaired? Currently on the market lead-acid batteries can be repaired I think there are a lot of friends know more, but lithium batteries can be repaired for everyone has not heard and seen for the time being. This article introduces the lithium battery for electric vehicles, 18650 lithium battery, lithium battery for cell phones, lithium battery pack and lithium battery repair methods are introduced, I hope it will help you.
What is battery repair?
Battery repair is a generic term for the repair of secondary rechargeable batteries with reduced performance or failure through physical or chemical means. Through repair can restore the capacity of the battery, extend the service life of the battery and improve the performance of the battery. Secondary battery is also known as "rechargeable battery", refers to the battery can be discharged by charging the battery to activate the active material and continue to use the battery. The main rechargeable batteries on the market are NiMH, NiCd, lead-acid batteries, lithium-ion (including lithium batteries and lithium-ion polymer batteries) and so on.
Can lithium batteries be repaired?
Lithium batteries can be repaired, that is, the damaged cells can be replaced. Not to the end of the life of the lithium battery, can be repaired, a device to test the repair can be used. Lithium battery repair is a very technical work, requiring professional technicians and equipment to complete. Experts reminded the price of lithium batteries is not too high, rather than the effort to repair lithium batteries, it is better to buy a new battery to facilitate cost-effective. In addition, to develop good habits, is also a shortcut to extend the life of lithium batteries.
Li-ion battery repair methods are available.
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① cell phone lithium battery repair in three ways.
1. Use a clean eraser or other material cleaning tools to gently wipe the metal contacts on the lithium battery and the metal contacts on the phone, which helps the charging situation and the lasting power.
2. will be used to automatically shut down the old cell phone lithium battery pack with cling film will be firmly wrapped, wrapped as far as possible to fit, inside and outside a total of three layers, to ensure that the battery is in a vacuum state. Then, then wrap three layers of newspaper outside the plastic wrap, so that the lithium battery is completely sealed. Put it into the freezer layer of the refrigerator, 48 hours later, remove the battery, one by one to remove the six layers of paper wrapped outside, the lithium battery did not cause surface expansion or deformation due to freezing. After cooling for a period of time, then charge.
3. Let the near-end-of-life lithium battery completely discharged, and then re-charged to activate the battery. The specific method is: deep discharge of the phone is to achieve a deeper recharge by depleting the internal electrical energy, which requires the use of some unconventional methods. A specific device is used to connect the phone to a small low-voltage bulb, and the power inside the battery is transferred to the bulb until it is all discharged. Under normal circumstances, the phone will automatically shut down if it falls below the rated voltage of 3.6 volts when it is connected. After discharging, the cell phone battery charged again can be used for a longer time.
② electric car lithium battery repair method.
1. Reassemble the group: after the whole group of lithium battery group loss ring, we often charge and discharge the electric car lithium battery test, in the inspection often find a group of batteries 50% of the battery is not damaged. The reason is that in the series lithium battery group, the individual battery lags behind to form the whole group of battery function decline, so that the whole group of battery function decline.
2. Water replenishment: the electric car lithium battery used for about 4 months to carry out a water replenishment, can extend the service life of the battery, extending the time to an average of more than 3 months. It should be noted that after each recharge, the battery is in the overcharge state to turn the battery from "quasi-liquid-poor" to "liquid-poor" state, and this overcharge is good for improving the battery capacity.
3. Sulfide elimination: the use of battery repair equipment, the battery to eliminate sulfide treatment.
4. Particle generator: take the particle generator in parallel on the battery, the battery repair. This method is better for repairing electric car lithium batteries, but because the repair is more thorough, so if there is no over-discharge, for the continuous use of electric car lithium batteries, often completely eliminate the possibility of battery sulfation.
5. Electric vehicle lithium battery pack comprehensive repair method: the use of regular inspection of electric vehicle lithium batteries, timely removal of sulfur and water replenishment, single battery charging, re-assembly group. Battery instructions, if it is maintenance-free, generally do not need to add water. If you need to add water, first test the electrolyte density of the electric car battery itself, according to the different situations to choose the appropriate concentration or no concentration of water for replenishment, so that the lithium battery pack capacity increased or extended service life.
In summary, the electric car lithium battery repair is completely achievable, Shi Neng and lithium battery voltage balance repair instrument is currently one of the industry's only lithium battery can be perfectly repaired equipment. The best equipment to achieve the secondary use of lithium batteries, to achieve lithium battery power performance and range recovery of more than 90%.
③18650 lithium battery repair method.
18650 lithium battery is first used in our laptop, as well as some mobile devices. Diameter 18mm, length 65mm cylindrical battery. Now basically become a standard specification of lithium batteries.
1, will take down your lithium battery after all the use, with the temperature treatment, the battery in the case of temperature instability will greatly shorten the use of time, because the battery is no electricity and a considerable part of the lithium ion has been with memory electricity, with such a method can make the memory electricity released part of the winter, put outside for a while, and then that to the house.
2, there is another method, remove the lithium battery, put about a week, will slowly consume the electricity, you need to use the machine first after the electricity is completely consumed. Then charge all again, estimate the time you now charge must be very short, charge full, disconnect and charge again, repeat several times, absolutely effective.
④ Li-ion battery pack repair method.
1, lithium battery pack often should be because of one or a group of battery damage and can not be used, this time should be measured one by one for each group of battery voltage at both ends, no voltage or voltage is seriously low (a single battery described earlier) removed, replaced by a new battery of the same kind, the internal resistance is about the same.
2, the use of batteries must be equipped with a protection plate to limit overcharge, over discharge, short circuit, etc., to help extend the life of the lithium battery pack.
⑤ three methods of repairing lithium batteries.
1、Freezing
A few days ago, I can not use a lithium battery, the symptoms of the performance is neither charged into the camera can not be turned on (the camera shows no power), tried several times are so. I had no choice but to abandon it to the side, almost throw it in the trash. Later, I do not know what the idea, the battery with multiple layers of absorbent paper and multiple layers of plastic film sealed into the freezer (-18 degrees) frozen for two full days and two nights, after taking out the package with the room temperature for two days, reluctantly loaded into the camera again to try, hey, it is completely back to normal! Now I tell you, if there is a similar situation, may as well try!
2, discharge
Lithium batteries can be discharged on or connected to the resistor method. On discharge should be put to the extent that the phone is turned on and stopped; connected to the resistance discharge can be taken to connect the corresponding voltage of the small electric beads discharge for a long time, until the small electric beads connected to the degree of instantaneous extinction. Discharge current to high current is better.
3、Activation
Connect 12V AC in series, and connect a small bead or resistor in series between the batteries for current limiting. First use a small current activation, so that the control circuit AC for tens of milliamps, maintain 30 to 60 minutes, and then increase the current to the nominal value of the battery 1 to 2 times. For example, a 1000 mAh battery is added to 1000 to 2000 mA and activated for 30 to 60 minutes. In the above process should pay attention to the temperature and appearance of lithium batteries: there should be no hot, smoke, bulging and other abnormal phenomena, such as high temperature (40 ℃ or more) should be appropriate to reduce the current.
The above is the lithium battery repair method book, you have learned? Lithium batteries can be repaired, lithium batteries are now very popular, lithium battery purchase cost is much higher than lead-acid batteries and the cycle time is also more limited, so enhance the cycle time of lithium batteries to reduce the cost of use has a positive significance.
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