New energy vehicle maintenance Engineers need to master a series of professional technical knowledge in their work, which covers not only the basis of traditional vehicle maintenance, but also the unique technical field of new energy vehicles.

The following are the main technical knowledge that new energy vehicle maintenance engineers need to master:

01 Power battery technology

Battery type and structure: understand the structure and working principle of different types of power batteries (such as lithium ion batteries, lithium iron phosphate batteries, etc.).

Battery management system (BMS): master the functions and working principles of the battery management system, and be able to diagnose and maintain the BMS.

Battery charging and discharging characteristics: Be familiar with the charging and discharging characteristics, capacity, life and other parameters of the battery, and be able to assess the health status of the battery.

02 Motor and electric drive system

Motor type: understand the commonly used motor types of new energy vehicles (such as permanent magnet synchronous motor, asynchronous motor, etc.) and their working principles. New energy vehicle charging pile

Motor control: master motor control technology, including PWM control, vector control, etc., and be able to debug and repair the motor control system.

Electric drive system: Be familiar with the composition and working principle of the electric drive system, and be able to carry out fault diagnosis and maintenance of the system.

03 Electronic control system

Controller hardware: understand the hardware composition of the electronic control system of new energy vehicles, including controllers, sensors, actuators, etc.

Control algorithm: master the basic algorithm of new energy vehicle control system, such as motor control algorithm, battery management algorithm, etc.

Fault diagnosis: Be familiar with the fault diagnosis methods of the electronic control system, and be able to use diagnostic equipment for system detection and troubleshooting. Electric vehicle charging pile

04 Charging technology

Types of charging piles: understand the structure and working principle of different types of charging piles (such as AC charging piles and DC fast charging piles).

Charging protocol: master the relevant protocols for charging new energy vehicles (such as CHAdeMO, CCS, etc.), and be able to debug and maintain the charging system.

Charging safety: Be familiar with the safety protection measures during charging, and be able to deal with various safety problems during charging.

05 Special Tools and Equipment for New Energy Vehicles

Diagnostic equipment: Skillfully use special diagnostic equipment for new energy vehicles, such as special/general diagnostic instrument, battery detector, etc.

Maintenance tools: master the use of special maintenance tools for new energy vehicles, such as high-voltage cable disassembly tools, battery disassembly tools, etc.

Safety protection equipment: understand and correctly use various safety protection equipment, such as insulating gloves, insulating shoes, high-voltage protective clothing, etc.

06 Software and data analysis

On board software: Be familiar with the on-board software system of new energy vehicles, and be able to update and debug the software.

Data acquisition and analysis: master data acquisition and analysis technology, be able to analyze vehicle operation data and find potential problems.

Remote diagnosis: understand remote diagnosis technology, and be able to conduct fault diagnosis and maintenance on vehicles through remote connection.

07 Safety knowledge

High pressure safety: master the safety operation rules of the high pressure system, and be able to carry out safe operation in the high pressure environment.

Emergency treatment: understand the emergency treatment methods of new energy vehicles, and be able to deal with emergencies such as battery fire and electricity leakage.

Environmental protection regulations: Be familiar with the environmental protection regulations and standards related to new energy vehicles, and ensure that the maintenance process meets the environmental protection requirements.

summary

The technical knowledge that new energy vehicle maintenance engineers need to master covers power battery technology, motor and electric drive system, electronic control system, charging technology, special tools and equipment for new energy vehicles, software and data analysis, and safety knowledge. These technical knowledge not only require engineers to have a solid theoretical foundation, but also need to accumulate rich practical experience through practice in the maintenance of new energy vehicles. By constantly learning and mastering these technical knowledge, new energy vehicle maintenance engineers can provide a strong guarantee for the safe operation and user experience of new energy vehicles.