Automotive electronic equipment

1. Summary
The control system of a car is based on electronic equipment, so the reliability of electronic control equipment plays an important role in vehicle reliability. Generally, the use environment affects the durability and operational performance of electronic devices and electronic units. Therefore, the environmental reliability of automotive electronic components has become one of the main aspects of automotive reliability. Most automotive electronic products are divided into the following three categories:
(A) Electronic components, including GPS, speakers, car DVDs, reversing radar, controllers, operational amplifiers, switching power supplies, various microprocessors, computers, etc.
(B) Relays and motors include various relays, wiper motors, electronic antennas, air conditioning motors, heater motors, electric seats, rearview mirror motors, alternators, washing pump motors, etc.
(C) Among various sensors, the development of sensors and relays is the most commonly used. They are the two most common automotive electronic devices used in automobiles.
　2. Reliability test standards for automotive electronic equipment 1.
ISO is in the International Organization for Standardization, ISO/TC22/SC3 is responsible for the development of standards in the electrical and automotive electronic technology fields. The application environment of automotive electronic products includes electromagnetic environment, electrical environment, weather, mechanical environment, chemical environment, etc.
ISO21848 road vehicles-42V rated voltage electrical and electronic equipment power environment.
Currently, the latest domestic environmental testing standards for automotive electronic products are managed according to product technical conditions. The National Automotive Standardization Technical Committee (SAC/TC114) is formulating national and corresponding industrial standards with reference to ISO standards.
The ISO standard has been widely accepted by European and American car manufacturers, and the requirements of Japanese car manufacturers are very different from the ISO standard to ensure that the standard restrictions are met. The internal requirements of various automobile manufacturers are stricter than ISO requirements.
2. AEC American Energy Control Corporation's series of standards In 1990, Chrysler, Ford and General Motors established the Automotive Electronics Committee (AEC) to establish a common set of component specifications and system standards. Quality AEC has established a standardized quality control system. The certification specification for AEC-Q-100 chip stress testing is the first AEC standard. AEC-Q-100 was released in 1994 because the above three car manufacturers can use it at the same time. Increased the willingness of parts manufacturers to exchange product specification information, and promoted the internationalization of auto parts. The AEC standard has gradually become a general test requirement for parts. After more than ten years of development of automotive electronic components, AEC-Q-100 has become a general standard for automotive electronic systems, such as AEC-Q-101 for modular components and AEC-Q-200 for passive components. Guiding principles such as AEC-Q001 / Q002 / Q003 / Q004 are constantly being formulated.　
　3. Car cable and wire test
　　Recommended model for test conditions
　　High temperature operation test temperature: 150℃ alternating damp heat test box
Low temperature operation test temperature: -40℃ alternating damp heat test box