The on-board charger is built in the new energy vehicle, which is used to charge the on-board high-voltage battery from the AC grid when parking. The battery used is usually more than 400V, and is developing towards higher voltage and higher number of battery strings. In order to realize a faster and lighter vehicle charging scheme, the new trend of charging power is upgraded from 6.6kw to 11kw. Generally, the current flows from the grid to the battery in one direction, but there are also two-way flow design schemes. Nano chip micro provides complete solutions for isolation voltage, isolation current detection, isolation drive and isolation communication, helping customers achieve higher power density OBC solutions.Application document
《Measurement method of radio interference of high voltage overhead transmission lines and substations》
《General requirements, tests and test conditions for alternating current measuring equipment Part 11: measuring equipment》
《Special requirements for multifunctional watt hour meters》
《Special requirements for AC measuring equipment Part 21 static active energy meters (classes 1 and 2)》
《Special requirements for AC measuring equipment Part 22 static active watt hour meter (class 0.2S and class 0.5s)》
《Special requirements for AC measuring equipment Part 23 static reactive energy meters (classes 2 and 3)》
▪ Electrostatic discharge immunity, contact discharge 8Kv, air discharge 15kV
▪ RF electric field radiation immunity, maximum test field strength 30v/m
▪ Electrical fast transient burst immunity, maximum test level 4KV
▪ Surge (impact) immunity, maximum test level 4KV
▪ RF conducted disturbance immunity, maximum test level 10V
▪ Power frequency magnetic field immunity, maximum test field strength 0.5mT
▪ Attenuation oscillation wave immunity, maximum test level 2.5KV
▪ Conducted disturbance voltage, 150khz-30mhz, qp/av
▪ Radiated electromagnetic disturbance, 150khz-30mhz, QP
Shanghai suoshen electronics is widely used in many industries, such as medical treatment, automotive electronics, home appliances, lighting, electrical appliances, power supply, power facilities and so on
Voltage sag and short-term interruption are caused by the failure of power grid and power facilities or sudden large changes in load. In some cases, there will be two or more consecutive dips or interruptions. Voltage changes are caused by continuous changes in the load connected to the grid. If EUT cannot respond to the change of power supply voltage in time, it may cause faults. The cycle drop generator is used to evaluate the performance of electrical and electronic equipment when subjected to voltage sag, short-term interruption and voltage change. The product meets the requirements of new standards such as iec61000-4-11 and gb/t17626.11.
The impact of lightning (indirect lightning) in nature and voltage changes caused by large switch switching in power supply lines on power supply lines and communication lines is particularly large, and the impact on products may be destructive. The lightning surge generator is used to evaluate the performance of the equipment when it is subjected to high-energy disturbance from the power line port and other signal line ports. The product meets the requirements of new standards such as iec61000-4-5 and gb/t17626.5.
In the circuit, such as from the switching transient process (cutting off inductive loads, bouncing relay contacts, etc.), it will usually interfere with other electrical and electronic equipment in the same circuit. This kind of interference is characterized by high amplitude, short rise time, high repetition rate and low energy. Clusters of narrow pulses can charge the junction capacitance of semiconductor devices, which may cause circuit or equipment errors when accumulated to a certain extent. The burst generator determines a common reproducible evaluation basis for evaluating the performance of power supply ports, signal, control and grounding ports of electrical and electronic equipment when disturbed by electrical fast transient bursts. The products meet the requirements of new standards such as iec61000-4-4, en60100-4-4 and gb/t17626.4.