With the rapid development of new energy vehicles, various countries and companies have proposed time limits for phasing out the sale of traditional fuel vehicles. The development of new energy vehicles is imperative, but their safety issues have always been a focus of attention in the automotive industry.
This article aims to share the demand characteristics and latest power solutions in the new energy vehicle power supply industry. Feel free to leave a comment to discuss!
Timelines for banning the sale of traditional gasoline-powered vehicles in various countries
Timelines for automakers to stop selling traditional gasoline-powered vehicles
What safety issues do you know about new energy vehicles?
New energy vehicles carry certain risks and safety concerns, primarily including electrical safety, chemical safety, and mechanical safety. The core technologies of electric vehicles lie in the three key components: battery, motor, and electronic control system, with the power supply being the "heart" of the system. To mitigate risks and improve electrical safety, corresponding automotive-grade standards exist for power supplies, such as compliance with IATF 16949 regulations and meeting climate environment testing requirements.
How much do you know about the 6 key aspects of automotive electronics reliability?
1. Automotive EMC Testing
Automakers generally have stringent electromagnetic compatibility (EMC) testing requirements for automotive electronic products, but their testing standards differ. Key testing items include: radiated emissions, conducted emissions, immunity, transient interference, and electrostatic discharge. Some standards are as follows:
Electromagnetic compatibility standards for automotive electronic and electrical components and subsystems
2. Electrical environment testing
It includes three main categories: transient characteristics, protection functions, and insulation performance. Key indicators include: insulation resistance ≥10MΩ, withstand voltage 500Vrms, and superimposed AC voltage Upp ≥4V.
Electrical environment testing requirements
3. Mechanical environment testing
Passenger vehicle vibration and shock testing should be performed simultaneously with temperature-induced stress. This includes five main areas: engine, transmission, flexible air chambers, elastomers, and non-elastic bodies. The standard for elastomers is: random 10-1000Hz, 20m/s², XYZ, 8h.
Mechanical environment testing requirements
4. Climate and environmental testing
The main focus is on testing temperature and humidity environments.
Climate and environmental testing requirements
Low temperature operation (24h storage, 24h live operation) → High temperature operation (48h storage, 96h live operation) → Temperature gradient (slowly increasing for 7h) → Temperature cycling (8h * 30 cycles) → Salt spray test;
Heat penetration temperature cycle (8 hours of operation) → damp heat cycle (8 hours of operation * 10 times) → steady-state damp heat (21 days) → waterproof splash test → immersion test.
5. IATF 16949 Management System
The IATF 16949 quality management system is an important international standard in the automotive industry, which includes the control and management of many processes such as product planning, design and development, and production.
6. AEC Automotive Component Standards
As automotive standards continue to improve, more and more car manufacturers are requiring components to meet AEC standards, which are categorized as follows:
How can we meet the high reliability requirements of automotive electronics?
Automotive electronics place far higher demands on power supplies in terms of design, manufacturing, and performance than other industries. How can these high reliability requirements be met?
Reliability elements include:
For example, the Mornsun CF0505XT-1WR3 automotive-grade power supply meets four key reliability requirements to ensure reliable signal isolation and voltage conversion:
●Components: Meets AEC-Q100 automotive component standards
●Design and production: Controlled according to IATF 16949 system.
●Internal testing: EMC, electrical parameters, aging test
●External Testing: External Climate and Mechanical Environment Testing
Click to learn more about the product.
The high reliability tests for automotive power supplies are quite rigorous. For example, there is a temperature and humidity test: the power supply must operate continuously for 1000 hours under ambient temperature and humidity conditions of 85℃/85%RH.
Further reliability tests are as follows:
Typical application examples of Mornsun power supplies ▼
For detailed application solution information, please contact: [email protected]
Summarize
The rapidly developing new energy vehicle industry has garnered significant attention worldwide. Mornsun's power module products are managed according to the IATF 16949 standard, providing complete power solutions for BMS battery management systems, MCU motor control systems, and VCU vehicle control systems, ensuring the reliability of automotive powertrains.
