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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 -1.1.3 ANSWERS

 Introduction to battery-management systems- COURSERA WEEK 01  QUIZ -1.1.3 ANSWERS

Question 1

In which electrode does oxidation occur when a cell is discharged? (Enter "negative" or "positive", without the quotes.)

1 / 1 point
Negative
Correct

Yes. During discharge, the negative electrode gives up electrons to the external circuit. Oxidation is loss of electrons.

Question 2

If the net movement of cations through the electrolyte of an electrochemical cell is from the positive electrode region toward the negative electrode region, is the cell being charged or discharged?

1 / 1 point
Correct

Yes. During charge, cations move from the positive electrode toward the negative electrode and anions move in the opposite direction.

Question 3

Which component(s) of a cell must be designed to prevent self discharge? (Select all that apply.)

1 / 1 point
Correct

Yes. The electrolyte must be an ionic conductor but an electronic insulator. Therefore, it must have extremely low electronic conductivity to prevent self discharge.

Correct

Yes. The separator is a physical barrier between the negative and positive electrodes that is designed to ensure that they do not touch and short circuit the cell. It is electronically insulating as well, to prevent self discharge.

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