Graduation Design of Wuhan University of Technology (thesis)

Design of —— New Energy Vehicle

Faculty(Department):

International Institute of Education

Professional Class:

Vehicle Engineering Class 1604

Name of student:

Fu Mingyu

Instructor:

Li Qizhong

Original Statement of Degree Papers

I solemnly declare that the paper submitted is the result of the independent research conducted by me under the guidance of my tutor. This paper does not include any other work that has been published or written by individuals or groups other than those that have been cited in particular. I am fully aware that the legal consequences of this declaration shall be borne by me.

Signature: Fu Mingyu

Date of year

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the author of this dissertation is fully aware of the regulations of the school concerning the protection and use of the dissertation, and agrees that the school reserves and sends copies and electronic versions of the thesis to the relevant dissertation management department or institution, allowing the thesis to be consulted and borrowed. I authorize the provincial excellent bachelor's thesis selection organization to compile all or part of the content of this thesis into the relevant data for retrieval, and can use photocopying, indentation or scanning to save and compile this thesis.

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2. don't keep secrets.

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(No .4)

Author's signature: Date of year

Signature of tutor: Date of year

Abstract

This paper focuses on lavida 2019new energy vehicle.Through relevant data analysis,the design task of the vehicle layout of this model is carried out.The task content is mainly aimed at the overall design,the driving motor design,the fuel cell design,the vehicle dynamic disposition analysis design and so on carries on the certain analysis.

Under the conditions that meet the standards and regulations of vehicle layout,the overall scheme of vehicle layout is analyzed and determined,and the reasonable layout and the structural form of the main components are selected.In order to meet the requirements of the required power of the car,the design of excellent driving motor and parts,so that the car has a better product competitiveness.

Key Words ：lavida ;new energy;vehicle layout ;Electric cars

Catalog

The first chapter. Introduction 1

1.1 Research background 1

1.2 Current Status of New Energy Vehicle Layout 2

1.3 Purpose and significance of the study 2

The second chapter New energy vehicle layout design research content 4

2.1 Basic content of the study 4

2.2 Technical programmes and measures 5

The third chapter The choice of main forms of new energy vehicles 7

3.1 Number of axes and choice of driving form 7

3.2 Selection of layout 7

3.2.1 motor arrangement 7

3.2.2 battery arrangement 7

3.2.3 of other components 8

The fourth chapter selects the main parameters of new energy vehicle 9

4.1 Main dimensions of the vehicle 9

4.1.1 axis 9

4.1.2 front 、rear wheelbase 9

4.1.3 front suspension and rear suspension 10

4.1.4 dimensions 10

4.2 Determination of vehicle quality parameters 11

4.2.1 quality of vehicle preparation 11

4.2.2 vehicle capacity 11

4.2.3 General quality of vehicles 11

4.2.4 cars Distribution of axle loads 12

4.3 Determination of Vehicle Performance Parameters 12

4.3.1 dynamic parameters 12

4.3.2 minimum turning radius 14

4.3.3 operating stability parameters 15

4.3.4 ride comfort parameters 15

4.3.5 braking parameters 16

4.3.6 parameters 17

The fifth chapter Selection of main assembly parts of new energy vehicles 18

5.1 Selection of motor drivers 18

5.1.1 Choice of Motor Form 18

5.1.2 Selection of rated power of drive motor 19

5.1.3 drive motor maximum torque and corresponding speed 20

5.2 Choice of tyres 21

5.3 Fuel cell options 21

5.4 Other layout options 22

The sixth chapter Human Engineering 23

6.1 Human Engineering Brief 23

6.2 HMI Layout Design 23

6.2.1 human pose design 24

6.2.2 mannequin 25

6.2.3 Check driver position 26

The seventh chapter Conclusions 28

References 29

Acknowledgement 31

The first chapter. Introduction

1.1 Research background

Globally, since the second half of the twentieth century, the number of cars around the world has grown at almost a very fast rate, and by now, the pollution caused by carbon dioxide emissions from cars has accounted for more than twenty percent of human emissions^[13]The need for cars to travel, and the environmental pressure caused by car emissions pollution and the consumption of oil resources, has become a problem that today's vehicle industry personnel must solve.

So how to change the oil-based approach to automotive energy? Obviously, research and development of new energy vehicles, using clean energy to replace oil energy, has become a direct solution. Research and development of new energy vehicles has become the trend of the times.

After several years of development, the new energy automobile industry has made rapid development in our country. As of December 2019, the sales volume of new energy vehicles in China in that year was 1.206 million, which became the first year-on-year growth decline in recent years. Although the reasons for this decline are related to policy subsidies, emission standards and market factors, compared with the global year-on-year growth, China still needs to carry out more in-depth research in the new energy automobile industry.

The research work of vehicle layout design is the most important work in the research and development of new energy vehicles. The whole vehicle layout design is the foundation of a vehicle development, and runs through the whole vehicle development. The task of automobile general layout design is to carry out the whole vehicle design according to the use, use condition, economic condition and production condition of the selected vehicle, mainly lies in the overall coordinated design of driving motor, chassis and battery.^[1].