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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 -1.3.2 ANSWERS

 


Practice quiz for lesson 1.3.2

Question 1

What is the power capability (in kW) of a 2P40S battery pack built from lithium-ion cells each having nominal capacity of 10Ah, nominal voltage of 3.8V, and present current-carrying capability of 20A?

1 / 1 point
6.08
Correct

Yes. The power capability is equal to n_s \times n_p \times i_{cell} \times v_{cell}.

Question 2

In a 4P100S battery pack built using series-cell modules (SCMs), how many cells are there in each module?

1 / 1 point
100
Correct

Yes. In the SCM approach, modules are constructed from cells in series. Then, the pack is constructed from modules in parallel. Thus, the module contains the series connected cells, of which there are 100.

Question 3

In a master/slave BMS design, which of the following are usually functions performed by the master? Select all that apply.

1 / 1 point
Correct

Yes. The master unit must communicate with the BMS slave units.

Correct

Yes. The master unit monitors battery-pack current and isolation (ground-fault detection)

Correct

Yes. The master unit controls the contactors.

Correct

Yes. The master unit must communicate with the host-application controller.

Correct

Yes. The master unit must control the thermal-management system.

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