22 Years' Battery Customization
APR 02, 2020 Pageview：6015
Can you charge a lithium ion battery with a power supply?
Lithium ion batteries can be charged manually using a power supply. However, when using a power supply for charging a Lithium ion battery, voltage and current limiting are adjustable. Moreover, the charging process can never be left unattended, charge termination is not an automatic process when using a power supply. For lithium ion batteries, you must check the full charge voltage, 4.2V per cell. Be very careful that the cells that are connected in the series never exceed this voltage. When using a power supply to charge lithium ion batteries, a full charge is reached when the voltage of the cells inside reach 4.2V per cell and the current drops to 3% of what the rated current is. The last thing is that you must never leave the charging battery unattended. You must remove the battery once it is fully charged immediately. Failure to do so may lead to the explosion of the lithium ion battery.
Does fast charging damage lithium ion batteries?
One assumes that every one charge energy goes into the battery, whether or not charged slowly, quickly or by the ultra-fast technique. Batteries are nonlinear devices and most chemistry accepts a quick charge from empty up to concerning five-hundredths state-of-charge (SoC) with very little losses. NiCd will best and suffers the smallest {amount} amount of strain. Stresses occur within the last half of the charge cycle towards high charge once acceptance of metal ions within the anode of Li-ion becomes labored. an analogy is ireful drivers fighting for the last parking spot in an exceedingly shopping center to catch a purchase special. Applying an ultra-fast charge once the battery is empty and so really fizzling out the present once reaching five hundredth SoC and better is named step charging. The laptop computer business has been applying step charging for several years. Battery makers don't publish charge rates as a perform of SoC. a lot of this can be proprietary data.
Research corporations claim to attain advantages with pulse-charging Li-ion rather than applying the regular CCCV charge. The scientific community is skeptical concerning different charging and takes the “wait-and-see” approach. Scientists finding out the degradation of lithium-ion batteries believe quick charging can harm the facility packs quicker than one would possibly expect. basically, what happens is that quick charging apparently damages the battery's conductor particles, forcing the device to lose capability and shorten its period of time. This degradation is caused by metal ions whizzing between internal electrodes.
How do you charge a lithium ion battery with a power supply?
First, you need to figure out the C rating of your battery. Second, you need to set the limit of the power supply to be under the value C/10. For example, if you have a 2600 mAh lithium ion battery, then set the power supply to be under the value of 260 mA.
The next step is to get the charged voltage of the battery. For lithium ion batteries, that would be 4.2V per cell. Check it at the output with a good voltmeter, if you have one, just to be safe since Lithium ion batteries do not like over-voltages.
The next step is to connect the battery to the power supply with an amp meter connected to the battery in series. If your power supply already has an amp meter, then you can use that.
You need to keep close attention to the meter and wait for the current indicated on it to drop down to zero. When it is zero, the battery is fully charged.
Do keep in mind that some Lithium ion batteries have special connectors for balancing cells. If you do have that, it would be a good idea to use a charger that can make use of that connector.
A direct method of doing it's to initial analyze the battery and notice its C rating. Then set the present limit of the facility to provide to underneath C/10, to be safe. therefore for say 2600 mAh battery, the limit ought to be underneath 260 mA.
The next step is to urge the charged voltage of the battery. For atomic number 3 batteries, that's 4,2 V per cell. you've got a three S battery, therefore three cells in series, providing you with twelve,6 V. Set the voltage on the facility provide thereto price. Check it at the output with an honest meter, if you've got one, simply to be safe since atomic number 3 particle batteries don't like over-voltages.
The next step is to attach the battery to the facility provide with an amp meter connected to the battery in series. If your power provides already has an amp meter, then you'll be able to use that.
You need to look at the meter and look ahead to the present indicated on that to sink to zero. once it's zero, the battery is totally charged.
Do keep in mind that some Li ion batteries have special connectors for reconciliation cells. If you are doing have that, it might be a decent plan to use a charger which will create use of that instrumentality.
By passive sign convention, (I) is the current that enters the positive terminal of the component or enters the side which is at a higher potential than the other.
Connect the positive terminal of your battery with the positive terminal of your supply and do the same with negative terminals. Set the voltage of the source to be of the same value as the battery rated voltage (If the battery is 12V, set the source to be 12V) and current to be below the limit, which is x/10 A, where x is your total battery charge as mentioned before. Use an ammeter to measure the current flowing in the circuit which would come out be zero when the battery is fully charged.
Moreover, Lithium ion batteries may explode if you are not handling it safely so look for other professional answers on this forum before proceeding.
The best option is to buy a compatible lithium ion battery charger which has a charge indicator.
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