Under the traditional energy shortage and the objective requirements for environmental protection, new energy vehicles have become the development direction of the future car, how to take the lead in this battle of technology and speed of new energy vehicles development, electronic control and BMS (battery) Core technologies such as management systems are undoubtedly the focus of attention. At the 4th New Energy Vehicle Electronic Control and BMS Technology Seminar on April 27th, Shiqiang’s technical experts, the best semiconductor & component technology supplier in the electronics industry, gave an in-depth explanation on this issue and Brought a full set of device optimization options.
This time, Shiqiang brings new energy vehicle electric drive and BMS components analysis and optimization, including Melexis high-precision, ultra-low-cost, high-current, chip-level current sensor, which can achieve the highest driving efficiency in the field of dual motor control. RH850/C1M MCU, SMI sensor / 'target='_blank'> Pressure sensor for BMS applications, Silicon Labs' industry's fastest automotive grade digital isolators up to 150M and telfuse/'target='_blank'>Littelfuse category Full automotive grade TVS and fuses.
On the new energy electric drive, Shiqiang brought Renesas MCU electric drive solution and Melexis motor drive chip.
The Renesas MCU electric drive solution uses 40nm MONOS embedded flash technology, integrated internal resolver/digital converter (RDC) and enhanced motor control unit EMU to achieve the highest safety level ASIL-D, and no additional external rotation is required. Transformer-digital (R/D) converters reduce system cost. Not only that, the Renesas MCU drive algorithm in the solution still uses hardware to do the algorithm, which can reduce the CPU load while performing error detection and calibration. Compared with a large number of electric drive MCUs using software algorithms, the security level is greatly improved. . It is understood that EMU compares the speed of the algorithm through the hardware to the MCU through the software algorithm, which has a 7 times speed advantage difference.
On the small motor drive, Shiqiang brings the industry's smallest package and integrated LIN communication, the motor drive chip MLX81325 with the highest working voltage up to 36V, can be widely used in window lift, small power pump / oil pump, ball valve, grid Grid, etc.
In the BMS output current and the bus and phase current detection of the electric drive, Shiqiang brought the Melexis planar current sensor MLX91208. The sensor is small in size, does not require a large magnetic ring, is easy to pass the car vibration test, the automotive-level operating temperature range, up to 1000A AC and DC detection.
After the seminar, some engineers said that after listening to the speech of Shiqiang technical experts, they not only learned more new products and new technologies, but also provided some new solutions for their own product design. In particular, the Renesas MCU electric drive solution mentioned in the speech is of great help to the processing load of the current motor processor.
It is reported that at the seminar, Shiqiang's technical experts talked about the new product technology of electric bus application driver module, BMS management system and BMS power DC-DC.
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