How can a battery charge and operate simultaneously?

In summary, the conversation discusses how a battery charges while it is operating, with the question of how charge travels in opposite directions to operate and recharge. It is explained that in light-load automotive cases, the load takes power directly from the charger while attached to the battery. The concept is compared to refueling a car while it is running. The issue of sending charge through the device while recharging is addressed, with the explanation that the charger takes care of that and keeps the battery above the required voltage.
  • #1
radaballer
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How does a battery charge while it is operating? Just out of curiosity. I cannot figure out how this could possibly work if charge must travel from anode to cathode in order to operate the device, but must travel the opposite direction in order to recharge.
 
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  • #2
As far as I understand it, (at least in light-load automotive cases) the load simply takes the power directly from the charger while it's attached to the battery rather than using the cells as an intermediary, as long as the required current is available. In any case, it's simply a matter removing chemical potential energy while adding more. To make an analogy, it's sort of like refuelling your gas tank while the car is running.
 
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  • #3
radaballer said:
How does a battery charge while it is operating? Just out of curiosity. I cannot figure out how this could possibly work if charge must travel from anode to cathode in order to operate the device, but must travel the opposite direction in order to recharge.
Can you doodle us a circuit to show what you are describing?
 
  • #4
OmCheeto said:
Can you doodle us a circuit to show what you are describing?

If recharging means simply reversing the current, how can the cell send charge through the device simultaneously?
 

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  • #5
radaballer said:
If recharging means simply reversing the current, how can the cell send charge through the device simultaneously?
It does not. The charger takes care of that. The battery is like an additional load (and the charger keeps it above the voltage it would supply).
 
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Related to How can a battery charge and operate simultaneously?

1. How does a battery charge and operate at the same time?

A battery is made up of two electrodes (anode and cathode) and an electrolyte. When the battery is connected to a circuit, electrons flow from the anode to the cathode, creating a current. At the same time, the chemical reactions within the battery allow for the transfer of ions between the electrodes, which is what charges the battery.

2. Is it safe for a battery to charge and operate simultaneously?

It depends on the type of battery. Some batteries, like lithium-ion batteries, are designed to be charged and operated simultaneously without any safety concerns. However, other types of batteries, like lead-acid batteries, can overheat and potentially explode if charged and operated at the same time. It is important to follow the manufacturer's guidelines for safe usage of the specific battery.

3. Can a battery be overcharged if it is being used while charging?

Yes, a battery can be overcharged if it is being used while charging. This is because the charging process causes the battery to heat up, and using the battery at the same time can create additional heat, leading to overheating and potential damage. It is important to monitor the battery's temperature and follow the recommended charging time to avoid overcharging.

4. Will a battery last longer if it is charged and operated simultaneously?

No, charging and operating a battery simultaneously does not affect its lifespan. The lifespan of a battery depends on factors such as its chemistry, usage patterns, and maintenance. Overcharging or discharging a battery frequently can shorten its lifespan, so it is important to follow proper charging and usage guidelines.

5. Can I use any charger to charge a battery while it is being used?

No, it is not recommended to use any charger to charge a battery while it is being used. Using the wrong charger can cause the battery to overheat or be charged at the wrong voltage, which can damage the battery. It is important to use the charger recommended by the manufacturer and follow their guidelines for safe charging and usage.

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