Study on the Influence of Air Inlet and Outlet on the Heat Dissipation Performance of Lithium Battery
Round 1
Reviewer 1 Report
Following the review process of the article entitled "Study on the influence of air inlet and outlet on the heat dissipation performance of lithium battery" the following conclusions can be drawn:
1. The article presents a study based on the numerical analysis of a thermal management system on air for a Li-Ion battery. From the point of view of the treated subject, the article can be considered for publication in WEVJ. However, there are a number of mistakes that make reading the article relatively difficult, especially because of the way the text was translated into English from the original language of the authors, and therefore the recommendation that a large part of the text be rephrased ( and completed). In the following, the precise comments related to this aspect (and not only) will be presented.
2. Abstract: difficult to read and understand. Full rewrite required!
3. Key words: means that words and not whole phrases must be entered!!! Choose only the keywords that ensure good visibility of the article when a researcher wants to find out additional information about a subject (by searching for a WORD).
4. Introduction: The way this chapter was written is totally inadequate and must be rewritten. Some examples are given below.
Line (L) 36 "...good application prospect, many scholars have studied it." Please replace with "good application prospect, and therefore many scholars have studied it."
L 39: "batteries at different cooling rates. In order to accurately simulate the thermal response". May be "batteries at different cooling rates, in order to accurately simulate the thermal response"
L 41: Replace "Riza kizilel et al." with "Riza K et al."
L 45: : Replace "Basu Suman [22] ..." with "Basu S et al. [22]…”
L47-48: "Dylan C [23] analyzed the influence of the battery cell and the geometry of the battery pack on heat dissipation when forced air cooling was adopted.." So what? Good for him! For each reference mentioned and used in the text of the article, it must be said what are the results obtained from the research carried out! Please complete this. It does not necessarily mean that if an article contains many references it is automatically a good article and also the acceptance or rejection of an article does not depend on the number of references.
L 53: Replace "Yun bao used a battery..." with "Bao T et al. used a battery"
And so on... there are many mistakes of this type that must be corrected!!!
L 68: Try not to use forms like "Fig. 1. Shows the calculation model of the 18650 lithium-ion battery cell.". Eventually you can write "The calculation model of the 18650 lithium-ion battery cell used in this study is shown (presented) in Figure 1." However, be careful! The words used in the text do not appear in the title of figure 1. It is not a "calculation model" but a "charging-discharging model"?!
L 178-179: use two names "battery" and "cell" is there any difference. Please explain why.
L 245: "Figure 4. Schematic diagram of heat dissipation scheme of battery pack.". The reviewer believes that it is actually a section of an air cooling system, there is no indication anywhere in the figure related to thermal/heat transfer.
The figures where the results of the numerical heat transfer field are presented are very small and cannot be well visualized. They must be modified to better observe the phenomena taking place.
Conclusions: you must specify if the research carried out offers future directions for the development of the theme and especially emphasize the degree of novelty/innovation of this study.
You used the word "tuyere" (?!), which should be changed with another closer one (hole, orifice, nozzle, vent, etc.). The word "tuyere" is mainly used in the field of metallurgy, iron and steel.
References: Please recheck them to be in accordance with the editorial requirements. For example. the Batteries journal is written in lowercase "batteries" (see reference 25). The notation [J] also appears, which I don't know what it means and which should be deleted anyway.
See also “[36] [1] Liu L , Park J , Lin X…” ?!
The comments above are just some of the many mistakes the reviewer identified. Either the authors were in a hurry to submit the article or it is one of the first articles proposed for publication, otherwise this cannot be explained. It is necessary to check the article from the point of view of editing in English.
Based on these reasons, the reviewer's recommendation is: reject, but the authors are encouraged to resubmit the article once these problems are resolved.
Author Response
Dear Reviewer1:
Thank you for your comments concerning our manuscript entitled “Study on the influence of air inlet and outlet on the heat dissipation performance of lithium battery” (ID: wevj - 2268617 ).We feel great thanks for your professional review work on our article. As you are concerned, there are many problems that need to be addressed. According to your nice suggestions, we have made extensive corrections to our previous draft, the detailed corrections are listed below:
Q1:The main recommendations of reviewer 1 are abstracts, language representations of explanations, and questions expressed by reference personnel in the text.
Response: (1).After careful deliberation, we have tried our best to rewrite the summary, which includes: The overall performance of electric vehicles will be impacted by the lithium-ion battery pack's heat dissipation properties. The electrochemical thermal coupling model of the lithium-ion power battery is established, and the discharge experiment of the single battery is designed in order to study the impact of the structural parameters of the cooling system on the heat dissipation characteristics. The experimentally measured voltage and temperature curves with time are similar to those obtained from the numerical model at various discharge rates. On the basis of the model, the battery pack's height, angle, and number of air inlets and outlets are created, and the heat dissipation properties of various architectures are examined.According to the findings, the maximum temperature decreases by 3.9K when the angle is increased from 0o to 6o at a given height; when the height is increased from 12mm to 16mm, the average temperature decreases by 2K and the maximum temperature difference decreases by 2.9K; and the more air inlets and outlets there are, the better the heat dissipation effect is. The heat dissipation properties of the battery are significantly influenced by the design of the air vent of the battery cooling system, thus this should be completely taken into account while designing the air vent.
- We modified the keywords which are battery; electrochemical; air; electric vehicle; thermal.
- We have revised the entire introduction as suggested by Reviewer 1(L 34- L 91)
- We replaced "tuyere" with the word "vent"(L 531)
Q2: L 68: Try not to use forms like "Fig. 1. Shows the calculation model of the 18650 lithium-ion battery cell.". Eventually you can write "The calculation model of the 18650 lithium-ion battery cell used in this study is shown (presented) in Figure 1." However, be careful! The words used in the text do not appear in the title of figure 1. It is not a "calculation model" but a "charging-discharging model"?!
Response: In the article, we have modified “calculation model” to “simplified charging-discharging model”
Q3: L 178-179: use two names "battery" and "cell" is there any difference. Please explain why.
Response: "Battery" represents a battery in a broad sense, while a battery pack often consists of multiple single batteries, with the following "cell" representing a single battery.
Q4: L 245: "Figure 4. Schematic diagram of heat dissipation scheme of battery pack.". The reviewer believes that it is actually a section of an air cooling system, there is no indication anywhere in the figure related to thermal/heat transfer.
Response: In response to this issue, we are very sorry to explain to reviewer 1: This is because we did not clearly describe picture 4. In fact, this figure is not a numerical analysis result diagram, but a structural diagram of a heat dissipation system. The arrow in the diagram indicates that air is input from the upper left corner when air cooling is used for heat dissipation. Therefore, we will change Figure 4 to “Structural diagram of air cooling system”.
Q5: References: Please recheck them to be in accordance with the editorial requirements. For example. the Batteries journal is written in lowercase "batteries" (see reference 25). The notation [J] also appears, which I don't know what it means and which should be deleted anyway.
See also “[36] [1] Liu L , Park J , Lin X…” ?!
Response:We have carefully examined the format of the references and changed the initial letter of the battery to a capital letter. In addition, some other minor details have been reviewed and modified.
We sincerely thank Reviewer 1 for his enthusiastic work. Your sincere and meticulous review comments have provided great help to my future thesis writing. I really appreciate them very much. Finally, it is also hoped that the correction will be approved.
Once again, thank you very much for your comments and suggestions.
Sincerely,
Dai Haiyan
Author Response File: 
Author Response.pdf
Reviewer 2 Report
The battery thermal issues are of great importance for their embedded applications. The research direction of this paper is correct.
1) battery modelling is the basic research topic, especially the thermal part. It is relatively difficult to capture all the thermal behavior. Your proposed model has been validation experimentally, however more an accurate model is not the final objective. More descriptions around how to use your model should be given, for instance, its application in energy management strategy, battery control, and battery diagnosis.
2) please improve your introduction with more recent research articles such as "Nonlinear extension of battery constrained predictive charging control with transmission of Jacobian matrix." International Journal of Electrical Power & Energy Systems 146 (2023): 108762.
3) is it possible to validate your proposed model with other battery technologies such as LFP, NMC ? (or your proposed model is only for one specific battery)
4) have you compared with other battery thermal modelling technologies ?
Author Response
Dear Reviewer:
Thank you for your comments concerning our manuscript entitled “Study on the influence of air inlet and outlet on the heat dissipation performance of lithium battery” (ID: wevj - 2268617 ).We feel great thanks for your professional review work on our article. As you are concerned, there are some problems that need to be addressed. According to your nice suggestions, we have made extensive corrections to our previous draft, the detailed corrections are listed below:
Q1:battery modelling is the basic research topic, especially the thermal part. It is relatively difficult to capture all the thermal behavior. Your proposed model has been validation experimentally, however more an accurate model is not the final objective. More descriptions around how to use your model should be given, for instance, its application in energy management strategy, battery control, and battery diagnosis.
Response: In order to increase the description of the model, we have added research and application of the model in "Introduction". See the description of the blue font in the paper for details:
The lithium ion power battery model includes electrical characteristics model, thermal model, electrochemical thermodynamic coupling model, and so on. Electrical models, such as equivalent models, black box models[27], and electrochemical mechanism models, are primarily used to simulate the voltage response characteristics of lithium batteries under various loading circumstances. Hu X et al. compared 12 different kinds of equivalent circuit model structures，and found that the first order RC model and the first order RC model with hysteresis were more suitable for lithium iron phosphate and nickel manganese cobalt ternary lithium batteries, respectively[28]. Meng J W et al. introduce a lithium-ion battery-specific nonlinear extension of the MPC charge control structure, which is based on one of the most popular equivalent circuit models (ECMs). The extended Kalman filter (EKF), which is used in the suggested charge control structure, is used to estimate battery state. Additionally, the Jacobian matrix from the first-order Taylor estimate in the EKF formulation is utilized in the MPC formulation. It has been verified by practical tests the electrical constraints of the battery are observed throughout the entire charging process[29]. The electrochemical model creates partial differential equations for electrode and electrolyte dynamics based on the internal reaction mechanism of lithium ion batteries, which are appropriate for the analysis of thermal management of lithium batteries[30]. Due to the significant quantity of heat produced while power batteries are operating, the electrochemical reaction process and the heat generation process are closely related and have an impact on one another. In this study, an electrochemical thermodynamic coupling model is employed to more thoroughly and methodically analyze the thermal properties of power batteries during charging and discharging.
Q2: please improve your introduction with more recent research articles such as "Nonlinear extension of battery constrained predictive charging control with transmission of Jacobian matrix." International Journal of Electrical Power & Energy Systems 146 (2023): 108762.
Response: In this paper, we cite the paper "Nonlinear extension of battery constrained predictive charging control with transmission of Jacobian matrix." to supplement the introduction to battery modeling.
Q3: is it possible to validate your proposed model with other battery technologies such as LFP, NMC ? (or your proposed model is only for one specific battery)
Response: Thank you very much for the question raised by the reviewers, which we did not describe clearly in the paper. Here is an explanation: we have applied the electrochemical thermodynamic coupling model established by predecessors to study the impact of different heat dissipation system structures on the thermal characteristics of batteries. This model is suitable for batteries made of various materials such as LFP, and has been validated (Sun Y Z;Huang Y X;Du J Y et al.Analysis of Influencing Factors of Thermal Management System for LiFePO4 Lithium Battery under High Power Charging[J].word electric vehicle journal.2020,11(44).1-24)
Q4:have you compared with other battery thermal modelling technologies ?
Response:In "Introduction" of our paper, we added research on key battery modeling aspects(L 68~L 90).
We sincerely thank Reviewer for your enthusiastic work. Your sincere and meticulous review comments have provided great help to my future thesis writing. I really appreciate them very much. Finally, it is also hoped that the correction will be approved.
Once again, thank you very much for your comments and suggestions.
Sincerely,
Dai Haiyan
Author Response File: Author Response.pdf
Reviewer 3 Report
This paper presents a very useful and important study in the area of batteries, with heat dissipation affecting the autonomy of electric vehicles.
Analyzing the results, there are some very obvious points, so I suggest additional tests in order to obtain more refined findings.
In terms of formatting, it is necessary to revise the whole work, mainly related to citations.
Author Response
Dear Reviewer:
Thank you for your comments concerning our manuscript entitled “Study on the influence of air inlet and outlet on the heat dissipation performance of lithium battery” (ID: wevj - 2268617 ).We feel great thanks for your professional review work on our article. According to your nice suggestions, we have made extensive corrections to our previous draft, the detailed corrections are listed below:
Q1: In terms of formatting, it is necessary to revise the whole work, mainly related to citations.
Response: In terms of format, we have downloaded the recent paper comparison format of this journal, especially the citation format, which has been modified. Due to the large amount of content involved, it is not listed here. Please download the revised version, as shown in blue font.
Q2: Analyzing the results, there are some very obvious points, so I suggest additional tests in order to obtain more refined findings.
Response: Thank you very much for the excellent question raised by the reviewer, which we have always hoped to improve. Due to our limited funding, the range of the voltage and current of the currently purchased experimental equipment is 5V6A, while the final analyzed battery pack consists of 30 single cells, and its range needs to be far greater range than that of this experimental equipment. The product with general accuracy of this equipment requires about 1 million yuan, and currently there is no funding to purchase. Therefore, we look forward to further efforts to improve this issue in the future.
We sincerely thank Reviewer for your enthusiastic work. Your sincere and meticulous review comments have provided great help to my future thesis writing. Finally, it is also hoped that the correction will be approved.
Once again, thank you very much for your comments and suggestions.
Sincerely,
Dai Haiyan
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Compared to the previous review report, the authors made only a few requested changes.
The authors must pay more attention to the way of expression and the semantic construction of the sentences, since the manuscript is still difficult to read. For example expressions like:
"Fig. 1. Shows the calculation model of the 18650 lithium-ion battery cell" should be written as "The calculation model of the 18650 lithium-ion battery cellis presented (shown) in Fig.1"
Or
"18650 lithium-ion battery is selected as the research object in the experiment" should be written as "The present experiment consider as research object the 18650-type lithium-ion battery"
Also, the way the authors are cited in the text is totally wrong. For example. " Riza kizilel et al. [19, 20] " - should be cited separately as "Kiziel R. [19] and Sabbah R. [20]"
There are non-compliant citations in the text such as: Basu Suman, Liao Xiaoping et al., Yun bao.
It's a pity that the treated theme is not enhanced by paying more attention to the way of writing the text, and for this reason the recommendation is: minor revision
Author Response
Dear Reviewer
Thank you for taking the time out of your busy schedule to review our manuscript again. We have carefully revised it in accordance with your comments. Your professional comments have provided powerful help to improve our thesis level, the detailed corrections are listed below:
Q1:"Fig. 1. Shows the calculation model of the 18650 lithium-ion battery cell" should be written as "The calculation model of the 18650 lithium-ion battery cell is presented (shown) in Fig.1"
Response: The title of Figure 1 is“Simplified charging-discharging model of lithium-ion battery”, so L96 is written as “The simplified charging-discharging model of the 18650 lithium-ion battery cell used in this study is shown (presented) in Fig. 1”
Q2: "18650 lithium-ion battery is selected as the research object in the experiment" should be written as "The present experiment consider as research object the 18650-type lithium-ion battery"
Response:The content has been modified according to the reviewer's requirements, as detailed in L212-L213.
Q3: Also, the way the authors are cited in the text is totally wrong. For example. " Riza kizilel et al. [19, 20] " - should be cited separately as "Kiziel R. [19] and Sabbah R. [20]"
Response: L40：“Riza kizilel et al. [19, 20] ”has been written as “Kiziel R. [19] and Sabbah R. [20]”
Q4: There are non-compliant citations in the text such as: Basu Suman, Liao Xiaoping et al., Yun bao.
Response: L45，L54 and L58：“Basu Suman, Liao Xiaoping et al., Yun bao.”have been respectively modified to “Basu S，Xiaoping L et al.，Bao Y ”.
In addition, we carefully reviewed the manuscript, especially the abstract and introduction, and modified partial sentences to make the language of the paper more fluent, but not affect the content of the paper.
We sincerely thank Reviewer for his enthusiastic work. Your sincere and meticulous review comments have provided great help to my future thesis writing. Finally, it is also hoped that the correction will be approved.
Once again, thank you very much for your comments and suggestions.
Sincerely,
Dai Haiyan
Author Response File: Author Response.pdf
Reviewer 2 Report
The questions have been answered, the paper can be accpeted.
Author Response
Dear reviewer,
Thank you very much for taking the time out of your busy schedule to review the last revised manuscript again, and especially thank you for your affirmation of the revised manuscript. Your comments have greatly contributed to the improvement of my thesis level.
Thank you again.
Sincerely,
Haiyan Dai
Author Response File: Author Response.pdf
Reviewer 3 Report
I recommend the approval.
Author Response
Dear reviewer,
Thank you very much for taking the time out of your busy schedule to review the last revised manuscript again, and especially thank you for your affirmation of the revised manuscript. Your comments have greatly contributed to the improvement of my thesis level.
Thank you again.
