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How To Estimate The Charging Time Of The EV?

How To Estimate The Charging Time Of The EV?

Fast Charging Time

The Fast Charging Time Of Different Vehicles Is Slightly Different. For Details, You Can Check The Data Released By The Manufacturer. The Required Time Is Basically As Follows:

It Takes 30-40 Minutes For 20%-80% Power, And 1-2 Hours For 0%-100% Power.

Why Is There A 20%-80% Time?

Because The Charging Speed Is The Fastest In This Power Range, The Charging Speed Of The Next 20% Is Very Slow. The Time Period Distribution Is Roughly As Follows: 0%-10% Power Takes 10 Minutes, 20%-80% Takes 30-40 Minutes, And 80%-100% Takes 10 Minutes. 40 Minutes Or More.

At The Same Time, This Is Also The Most Commonly Encountered Charging Scenario. This Is The Case When Charging In The Expressway Service Area For Long-distance Travel: The Remaining 20% Is Charged To Avoid Accidents, And The Charge Is About 80%. (the Above Are Time-saving Suggestions, Which Can Be Adjusted According To The Actual Situation.)

Factors Affecting Fast Charging Time

The Fast Charging Time Announced By The Manufacturer Is The Minimum Value Under Ideal Conditions. In Actual Use, The Fast Charging Time Will Be Slightly Extended Due To The Following Factors.

1. Charging Piles And Vehicle Power: The Greatest Impact
The Power Of Fast-charging Piles/super-charging Piles Is Uneven, And It Is Recommended To Give Priority To Choosing Fast-charging Piles With A Power Greater Than That Of The Vehicle.

2. The Current Power Of The Battery: A Big Impact
The Lower The Battery Level Of The Vehicle, The Faster It Will Charge. The Following Example Also Charges 10%, And The Time May Be Several Times Different.

3. Battery Capacity: Under Influence
The Larger The Battery Capacity, The Greater The Corresponding Maximum Charging Power, And The Final Charging Time Is Generally Not Much Different.

But If The Maximum Charging Power Is The Same, The Larger The Battery Capacity, The Longer The Charging Time Will Be.

4. Ambient Temperature: Under Influence
The Most Suitable Temperature For The Battery Is Around 25°c. If The Temperature Is Too High Or Too Low, The Charging Speed Will Slow Down, Especially In Winter In The North.

5. Battery Type: Little Impact
The Charging Speed Of The Ternary Lithium Battery Is Faster When The Battery Is Low, And The Lithium Iron Phosphate Battery Is Faster When The Battery Is High. Generally Speaking, The Lithium Iron Phosphate Battery Is Slightly Faster.

Actual Time Estimate For Fast Charging:
According To The Data Released By The Manufacturer, Plus The Above Factors, Each Factor Affects About 5-10 Minutes, And The Sum Is The Actual Time Of Fast Charging.

The Above Are Predictable Time Factors. In Addition, There May Be Uncontrollable Factors, Such As Being Occupied By Other Vehicles, Queuing For Charging, Charging Pile Failure, App Freeze, Mobile Phone Without Network Signal, Etc.

Slow Charging Time

Since The Slow Charging Speed (that Is, Power) Is Fixed, The Slow Charging Time Is Determined By The Charging Capacity.

The calculation method of slow charging time is as follows:

The Calculation Of The Above Slow Charging Time Is Not Accurate Enough, And There Are Some Influencing Factors For Slow Charging:

1. The charger has a certain loss during the current conversion process, and the actual charging power will be slightly lower.

2. The Voltage In Areas With Insufficient Power Supply May Be Low, Which Will Also Lead To A Slightly Lower Actual Charging Power.

3. If The Temperature Is Very Low, The Battery Needs To Be Heated During Charging, Which Also Affects The Time And Charging Capacity.

Based On The Above Factors, The Actual Time Of Slow Charging Will Generally Increase By Another 10%-20% In The Calculation Result.

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