Is it safe and a good practise to charge an electric vehicle battery while its being used simultaneously?

If not, what are the effects of charging a lithium-ion electric car battery while being used?

4 Answers

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  • 7 years ago
    Favorite Answer

    Batteries in petrol vehicles are constantly charging and discharging depending upon what is happening in the electrical circuit. But...

    Let us say that your electric car is driving on a roadway where electricity can be transmitted to the vehicle. The vehicle is demanding a certain amount of power to move. If your supplied power is less than this amount then the battery will not be charging. It will supply the balance of what is required.

    When the supplied power is equal to the demands of the vehicle the battery will neither charge or discharge.

    When the supplied power is greater than the demands of the vehicle excess power can be used to charge the battery.

    When configured correctly if even more power is supplied the battery might be recharged more quickly. When the battery has reached its maximum charge the supplied power is tapered off and then cut. In a petrol vehicle there is a regulator to perform this function.

    As you can see in every case the battery is either charging or discharging it is not doing both. What is happening within the storage battery depends upon what is happening in the electrical circuit.

    The battery has only two leads connected to it. Both will be active in one circuit. If it will help imagine a tank with only one pipe connecting it to the water supply. Water can flow through the pipe to fill the tank or empty the tank but it can't do both at the same time.

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  • Rick
    Lv 7
    7 years ago

    This is fine, but the charging current need to be limited to a safe value, or the battery will wear out prematurely.

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  • 7 years ago

    It is safe and good practice. It happens if you have a trolley, dynamic breaking, a solar panel, some hybrid vehicles or a fuel cell. Neil

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  • Olwe
    Lv 5
    7 years ago

    As the wheels are turning it should also be charging. It's safe.

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