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Pure hydrogen can be stored on-board in tanks under pressure. The mass of hydrogen stored in a container of volume γ and pressure p can be calculated using the ideal gas equation: In the formula: p and P are the pressure and volume in the container, respectively; R is the gas constant (8.31J/(mol·K)); T is…
Fuel cell technology depends on the type of fuel cell electrolyte, which can be classified into six main fuel cells: proton exchange membrane (PEM) or polymer exchange membrane fuel cells (PEMFCs), alkaline fuel cells (AF CS), phosphoric acid fuel cells (PAFCS), molten carbonate fuel cells (MCFCs), solid oxide fuel cells (SOFCs) and direct methanol fuel…
Fuel cell characteristics Fuel cell is a power generation device that directly converts the chemical energy existing in fuel and oxidant into electrical energy. Fuel and air are sent into fuel cells respectively, and electricity is wonderfully produced. From the appearance, it has positive, negative and electrolyte, which is like a battery, but in essence,…
Read More “What are the working principles and characteristics of fuel cells?” »
Series hybrid electric drive system Series hybrid electric drive system is a drive system in which two energy sources supply power to a single power machinery (motor) to propel the vehicle. The most common composition of series hybrid electric drive system, in which the unidirectional energy is the fuel tank, and the unidirectional energy converter…
Read More “What are series and parallel hybrid electric drive systems?” »
As the core of hybrid electric vehicle, the main function of energy management is to meet the basic technical performance (such as power, driving stability, etc.) and cost requirements of the vehicle, according to the characteristics of each component and the operating conditions of the vehicle, Realize the flow of energy between energy conversion devices…
Read More “What is the hybrid electric vehicle energy management control strategy?” »
According to QC / t837-2010 “types of hybrid electric vehicles” issued in 2010, hybrid electric vehicles can be classified in many ways: according to the structure of power system, there are mainly three forms: series, parallel and hybrid; According to the degree of mixing, there are four types: micro mixing, light mixing, medium mixing and…
Overview of hybrid electric vehicle With the rapid development of the global automobile industry and the increasingly tight supply of oil resources, countries all over the world actively seek alternative fuels or reduce fuel consumption, and vigorously develop new energy-saving and environment-friendly vehicles. Before solar energy, electric energy and other alternative energy really enter the…
Read More “Definition and advantages of hybrid electric vehicle” »
The power battery system is the energy source of the whole vehicle and provides driving electric energy for the whole vehicle. The volume, shape and technical parameters of battery system affect the driving performance of electric vehicle. It is one of the most important subsystems of electric vehicle. The parameter matching of electric vehicle power…
Read More “Parameters and performance of pure electric vehicle power battery” »
Typical structure of pure electric vehicle The main components of pure electric vehicle are composed of power battery pack and its controller, body and chassis, driving motor and its controller, and transmission system. In the early electric vehicles, compared with the traditional vehicles, the engine was replaced by the driving motor and the throttle was…
Read More “Brief introduction to the basic structure of pure electric vehicle” »
Selection and power matching of driving motor The motor shall have good torque speed characteristics, generally with a speed of 6000r / min-15000r / min. According to the driving conditions of the vehicle, the driving motor can operate in the constant torque area and constant power area. The drive motor shall always operate within the…
Read More “What are the key technologies of pure electric vehicles” »
