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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 03 QUIZ -1.3.1 ANSWERS

 

Introduction to battery-management systems- COURSERA WEEK 03  QUIZ -1.3.1 ANSWERS

Practice quiz for lesson 1.3.1

Question 1

Which of the following is needed in order for a BMS to fulfill its priority to "protect the safety of the operator of the host application"? Select all that apply.

1 / 1 point
Correct

Yes. The BMS must be able to sense and respond to over/undervoltage, excessive electrical current, and hazardous temperature conditions.

Correct

Yes. A ground fault can lead to a hazardous condition if the human operator were to touch an energized circuit and ground at the same time. You will learn more about this in Lesson 1.3.7.

Correct

Yes. If cells become too warm, they pose a safety hazard; if they become too cold, it is a safety hazard to attempt to charge the cells until they warm up.

Question 2

Which of the following tasks fall under "BMS Requirement 1: Sensing and high-voltage control"? Select all that apply.

1 / 1 point
Correct

Yes. This is a BMS task that falls under Requirement 1.

Correct

Yes. This is a BMS task that falls under Requirement 1.

Correct

Yes. This is a BMS task that falls under Requirement 1.

Question 3

Why might we choose not to implement all of the possible features in a particular BMS application?

1 / 1 point
Correct

Yes. If it is less expensive to recycle the battery and purchase a new one than it is to purchase a battery with a sophisticated BMS, then we may choose to implement a less-sophisticated and less-expensive BMS.

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