Since Xiaomi announced the manufacture of cars, its every move has attracted much attention, and recently we have checked through the enterprise inspection that Xiaomi Automobile Technology Co., Ltd. announced the application of 6 patents, including "electric drive axle and its fault diagnosis method and device, vehicle terminal", "electric vehicle and its control power circuit", "adaptive cruise start time adjustment method, device, equipment and storage medium" and so on. This time we will take a look at which technologies are corresponding.
Xiaomi AutoMotive Technology Co., Ltd.'s patent application for "Control Method, Device and Readable Storage Medium for Multiphase Motors" was filed in December 2021 and is reported to be the first published patent of Xiaomi Automotive Technology Co., Ltd. The patented method includes: in the case of a phase-deficient fault of a multiphase motor, the current position of the rotor is obtained to determine the target area to which it belongs, and the multiphase motor is controlled according to the control strategy corresponding to the target area. This technology can realize the fault-tolerant control of the motor without adding additional devices to change the hardware structure, thereby improving the reliability of the electric drive system.
Electric vehicles and their control power circuitry ensure that low-side and high-side loads are operating normally in the event of a low-voltage battery failure. Flat line stators and motors belong to the field of electric motors. The patent mentions improving production efficiency by changing the way the motor coil is wound. Auxiliary modules, multiplexed motors and inverter circuits, realize the functions of Boost circuits and Buck circuits, improve electromagnetic compatibility performance, and improve power transmission efficiency.
Adaptive cruise start time adjustment Based on the target information of the current vehicle, the starting time of the adaptive cruise function can be adjusted accurately and reasonably, which can reduce the hardware requirements of the vehicle, thereby reducing the hardware cost of the vehicle, and because the vehicle can be avoided from frequently exiting the adaptive cruise state, the passenger's riding experience can be improved.
At present, Xiaomi Group has more than 800 automotive-related patents, mainly focusing on wireless communication networks, data processing, digital information transmission, image communication, traffic control systems, distance measurement, navigation and other fields. This time the patent released is biased towards the underlying hardware system, it can be seen that Xiaomi car manufacturing is indeed solidly dragging in, but the current millet car has many challenges in the future, first of all, Xiaomi is a few years later than other new forces to build cars, the market will not care about latecomers, and the shortage of chips under the epidemic is even more difficult for a car company that starts from scratch. Under the predicament, Xiaomi Car still needs to be tested by its mass production and market.