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Introduction to battery-management systems- COURSERA WEEK 04 FINAL QUIZ

 Introduction to battery-management systems- COURSERA WEEK 04  FINAL QUIZ 1 . Question 1 W hich of the followi ng detection mechanisms could protect a battery pack from overcurre nt? Select all that apply. 1 point Contactor Thermal fuse Electronic protection Resettable fuse 2 . Question 2 Suppose that a small passenger vehicle expends energy at a rate of 220Wh/mile while driving. If this vehicle's battery pack is charged at a 6.6kW rate, what is the rate of range added to the battery in "miles (of range) per hour"? Round your answer to the nearest "mph". 1 point 3 . Question 3 Suppose that a positive-electrode material has \theta_{0\%}^{\rm pos}=0.99 θ 0 % p o s ​ = 0 . 9 9 and \theta_{100\%}^{\rm pos}=0.49 θ 1 0 0 % p o s ​ = 0 . 4 9 . If \theta_k^{\rm pos}=0.59 θ k p o s ​ = 0 . 5 9 , what is the present cell state-of-charge (in percent)? Round to the nearest percent. 1 point 4 . Question 4 Suppose that a lithium-ion cell having total charge capacity Q=10 Q =...
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Introduction to battery-management systems- COURSERA WEEK 01 QUIZ -1.1.2 ANSWERS

 Introduction to battery-management systems- COURSERA WEEK 01  QUIZ -1.1.2 ANSWERS

Consider the mobile-phone lithium-ion battery cell shown below:

Based on the markings on this cell, state the cell's nominal voltage (in volts).

1 / 1 point
3.7
Correct

Yes. The markings on the cell indicate a nominal voltage of "3.7V".

Question 2

Consider the mobile-phone lithium-ion battery cell shown below (both sides are shown).

What is the 1C rate for this cell (in mA)?

1 / 1 point
800
Correct

Yes. The capacity of the cell is listed as 800 mAh. Therefore, the 1C rate is 800 mA.

Question 3

Consider the mobile-phone lithium-ion battery cell shown below.

What is the nominal energy storage capacity of this cell (in Wh)? Enter your answer with two digits to the right of the decimal point.

1 / 1 point
6.66
Correct

Yes. Nominal voltage of 3.7 V multiplied by nominal capacity of 1.8 Ah is equal to 6.66 Wh.

Question 4

Consider the mobile-phone lithium-ion battery cell shown below (both sides are shown).

If ten of these cells are connected in series to create a battery, what is the nominal voltage of the battery (in V)?

1 / 1 point
38
Correct

Yes. Each cell has a nominal voltage of 3.8 V, so ten connected in series have a nominal voltage of 10 times 3.8 V or 38 V.

Question 5

Consider the mobile-phone lithium-ion battery cell shown below.

If two of these cells are connected in parallel to create a battery, what is the nominal energy capacity of the battery (in Wh)? Please enter your answer with two digits following the decimal point.

1 / 1 point
5.92
Correct

Yes. The nominal energy-storage capacity of the battery is the sum of the individual cell energy-storage capacities.

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