Project 1 Mechanical design of battery pack

Project 1 Mechanical design of battery pack

Battery pack capacity: 18 kWh

Cell: ANR26650M1-B

Prepare a detailed battery pack drawing along with its enclosure. State your assumptions.

Prepare a detailed battery pack drawing along with its enclosure. State your assumptions.

Introduction

As we know that the electric vehicle market is gradually increasing. With the growth of an electric vehicle, the growth and interest in Lithium-ion cell are also increasing. The energy source for an electric vehicle is stored in cylindrical cells.

Lithium-ion cells are capable of delivering very high power. Lithium-ion cells are used in aerospace, automotive electric vehicle, mobile devices, medical devices and other electronic devices which is based on these cells. The battery pack is installed in lower-floor of the electric vehicle so that weight may distribute equally and also the centre of gravity also maintain properly.

The high voltage battery pack is one of the most important components of any electric vehicle. The traction battery of an electric vehicle must achieve the following thing:

• Provide maximum traction motor torque

Vehicle range in sense of kilometre.

• To achieve the proper life cycle of battery

The battery pack of an electric vehicle is generally having a series or parallel combination. Large battery pack have multiple cell modules, in which many numbers of cells are kept together to build a large battery pack. Basically, a series connection is used to compound the voltage whereas the parallel connection is for compound current capacity. A battery cell consists of five major components that are electrodes - anode and cathode, separators, terminals, electrolyte and enclosure.

Mechanical Design of battery pack:

The high voltage battery it is one of the most important component of a battery electric vehicle (BEV). The battery parameters have a significant influence on other components and attributes of the vehicle, like:

• maximum traction motor torque

• maximum regeneration brake torque

• vehicle range

• vehicle total weight

• vehicle price

Pretty much all major aspects of a pure electric vehicle (EV) depend on the parameters of the high voltage battery. For our electric vehicle battery design we are going to start from 4 core input parameters:

• chemistry

• voltage

• average energy consumption of the vehicle on a driving cycle

vehicle range

A battery consists of one or more electrochemical cells (battery cells) which are converting chemical energy into electrical energy (during discharging) and electrical energy into chemical energy (during charging). The type of elements contained within a battery and the chemical reactions during discharging-charging events define the chemistry of a battery.

A battery cell consists of five major components: electrodes - anode and cathode, separators, terminals, electrolyte and a case or enclosure. For automotive applications there are different types of cells used:

mathematical calculation designing an 18kWh the vehicle proper range. is depending upon the voltage (V) parameter and ampere-hour or capacity (Ah).

used design high battery vehicle up For calculation, assumed 145.2 nominal voltage for series connection.

General required depending upon single cell: