The output of the automotive power supply system is complex. Various components such as high-current motors and solenoid valves cause the power supply voltage output to fluctuate frequently. Large voltage pulses or drops frequently occur, which poses a challenge to the stable operation of electronic products in the car. Therefore, in order to facilitate the testing of related products in the automotive electronics industry, the International Organization for Standardization provides a series of voltage transient waveform test templates to simulate voltage waveforms in various situations. Engineers can test the equipment under test according to the voltage waveform defined by the template in the laboratory to determine whether the product can meet the requirements. What kind of waveform can meet the test requirements? What kind of test solution is the most professional and convenient?
With the development of new energy vehicles in full swing, testing is the key to ensuring quality. For most people who are not very familiar with the electronic components of electric vehicles, what are the requirements for testing? How can it be satisfied? What do you need to pay attention to?
For the above problems, ITECH provides a mature, reliable and comprehensive test solution with rich research experience.
Automotive electronics testing program
In addition to the very complicated external environment, the internal electromagnetic environment is also very bad when the car is driving. The performance and reliability of automotive electronic appliances depend to a large extent on their anti-interference ability. The electromagnetic physical environment on the car is mainly manifested by unstable power supply voltage and the severe impact of instantaneous overvoltage on the working electronic device. Many types of automotive electronic appliances include common electric windows, wipers, car audio equipment, etc. These appliances need to undergo detailed tests before they can guarantee the performance of the entire vehicle.
Automotive electronics engineers are familiar with it. When testing automotive electronics, a power supply with stable performance and the ability to simulate waveforms in various automotive operating conditions is required. With years of research experience and strong R & D strength in the field of power supplies and electronic loads, ITECH has launched the IT6500 series of ultra-wide-range high-power DC power supply products with built-in DIN40839 standard voltage curve for automotive power grid and ISO 16750-2 The voltage sequence brings professional and standard test solutions in the field of automotive electronics. It has also been widely used and widely recognized by domestic and foreign well-known automotive electronics manufacturers and research laboratories. It can perform a series of automotive electronic appliances immunity tests, such as : Automobile engine start-up test, fuse blown test, and automotive electronic reset performance test, etc.
Taking the start-up test of an automobile engine as an example, when the automobile engine starts, the voltage provided by the circuit to the electronic equipment on the automobile will drop and then return to the process of instantaneously. If the electronic appliances on the automobile cannot withstand this fast voltage The impact of the fall will cause a malfunction and stop working. Therefore, before leaving the factory, the electronic equipment used in the car is often tested for the start of the car engine. A DC power supply that can truly simulate and quickly call the voltage sag waveform when the car engine is started plays an important role in the test. ITECH IT6500 series DC power supply can easily and quickly transfer the built-in DIN40839 voltage waveform for testing. This waveform is a standard automotive power network voltage curve promulgated by Germany specifically for simulating the start of a car engine. At the same time, Itech also fully considers the communication requirements of different test environments. A variety of communication interfaces such as GPIB / USB / RS232 and analog control interfaces are built into the IT6500 series DC power supply to deal with various communication and control need.
Automotive Motor Test Solution
Electric vehicle motors are powered by on-board power sources and drive wheels. They are important electronic components on automobiles and require a high degree of stability and high power characteristics. In the test, the high-power model of ITECH IT6500 series power supply can meet the demand. The maximum power of the single machine reaches 3KW, and the voltage / current / power can be expanded through the new master-slave series-parallel mode to meet the test requirements of higher power. . Not only is there a prominent bright spot in terms of power expansion, the new master-slave series-parallel connection of the IT6500 series DC power supply can be controlled by one host for multiple slaves, which is more convenient to control and has unique advantages in certain test environments.
For the test of the motor, the power supply used must also have extremely high anti-interference ability. The IT6500 series DC power supply has strong stability, and the output voltage and current ripple are very small, which can ensure the accuracy of the test. Secondly, the IT6500 series power supply can continue to supply power to meet the test requirements of long-term load.
JuncTIon box junction box test system
The junction box, that is, the car's central control box, is a multifunctional electronic control device. It almost integrates the fuses, circuit breakers and relays of the whole car into one, and is the control center of the vehicle's electrical appliances and electronic circuits. ITECH's central control box test system (JuncTIon box junction box test system) is built with the latest technology of programmable electronic load, power supply and other specially developed software. The system can detect the stability of the central control box for a long time, and complete the test of important performance indicators such as relay life test, fuse test, temperature monitoring and fault alarm prompt. The equipment has high degree of automation, high precision, intelligence, and good system heat dissipation performance. In addition, the modular structure allows customers to flexibly expand the number of test channels when they are used later, saving the cost of re-purchasing test equipment.
Electric vehicle power battery test program
In order to protect the earth, the government promoted "green travel" many years ago. In recent years, with the maturity of new energy vehicle technology, more and more people are willing to accept this environmentally friendly travel method. Nevertheless, many people hold a wait-and-see attitude towards new energy vehicles, and there are still certain concerns about its safety and reliability. For example, from time to time the incident of electric cars catching fire in the news is prohibitive.
Fire accidents in electric vehicles are mostly caused by the high temperature of the battery during charging or driving. To solve this problem from the root cause, it is necessary to test the parameters of the battery. The general battery test system on the market can only test the charge and discharge curve of the battery, but it can not detect the temperature. This is undoubtedly very imperfect and will bring great potential safety hazards. It can be said that the detection and testing technology directly affects the quality and performance of the battery. If the test is not perfect, it will inevitably bring hidden safety risks. In the field of battery testing, ITECH has very rich research experience, and there are many test instruments and test software with mature performance such as power supplies and electronic loads. For the test of power batteries, ITECH uses temperature increase in the test software The acquisition card method collects and monitors the battery temperature in real time during the long-term testing process, and accurately detects the internal resistance of the battery, providing the most comprehensive test solution for electric vehicle power battery manufacturers. At the same time, the ITECH IT9300 battery test system adopts a humanized design. The software monitoring interface is simple and neat, and it is clear at a glance. It can be used to test 200 sets of batteries at the same time. When testing the battery's charge-discharge curve, the engineer can set conditions such as stop time, stop capacity, and stop voltage. As long as any one of the conditions is met, the system will automatically stop discharging, which can ensure the test automation to the greatest extent. Avoid damage to the battery caused by excessive discharge.
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