4results about How to "Constant power" patented technology

The application belongs to the technical field of wireless charging and specifically discloses a wireless charging upgrading system based on wired charging piles and a working method thereof, which comprises a wired charging pile, a wireless charging upgrading control module, a wired charging control module, a wireless charging controller, a wireless charging transmitting plate, a wireless charging receiving plate, a receiving controller, a receiving end communication module and a BMS battery manager. The application can be upgraded and modified at low cost on the basis of existing wired charging piles to obtain an automatic charging system with wireless charging function, so as to fully utilize existing charging pile resources, maximize investment benefits, save resources, and relatively less upgrade the existing wired charging pile, which is relatively simple in construction and modification, can be adapted to various power wired charging piles, and keeps the power and efficiency of the original charging pile unchanged.

This invention relates to the field of motor technology and discloses a high-power-density permanent magnet motor for unmanned aerial vehicles (UAVs). The motor includes a stator with a winding section and a frequency conversion section. The winding section is arranged in a ring array around the center of the stator, allowing for different coil combinations on a single winding. The winding section includes slots A, B, and C. Slot A is located on the inner wall of the stator, while slots B and C are located on the stator itself. The inner wall of the stator also has inlet holes A, B, and C. Inlet holes A and B communicate with slot A, and inlet holes B and B communicate with slot B. The motor employs a wide-range speed control to adapt to UAV operating conditions, featuring a six-speed adjustment function. The rated speed ranges from 8 r / min (8 Hz) to 48 r / min (48 Hz), and the speed ratio can reach 1:8 during weak field operation. This allows for precise matching of the power requirements of different stages of UAV operation, such as takeoff, cruise, and high-speed flight, achieving full operating condition coverage without motor replacement.

The utility model relates to a motor driving circuit, a motor and a water toothbrush, and belongs to the technical field of oral care instruments. The motor driving circuit comprises a voltage stabilizing circuit and a driving circuit; the voltage stabilizing circuit is provided with a first power supply end and a first output end, and the first power supply end is used for being connected with a power supply; the driving circuit is provided with a second power supply end and a load end, the second power supply end is electrically connected with the first output end, and the load end is used for being connected with a motor. By the adoption of the water toothbrush, the motor of the water toothbrush can work under the stable voltage, so that it is ensured that the power of high-pressure water flow output by the water toothbrush is constant, and the product experience of a user is improved.

The invention relates to the technical field of electromagnetic coils, and discloses a method and equipment for keeping an objective lens at a constant temperature in a charged particle beam system. The method comprises the following steps: determining the maximum ampere turns required by a coil of the objective lens to generate a magnetic field, and determining the total heating power of the objective lens according to the maximum ampere turns; obtaining coil turns and resistance values corresponding to the coarse adjustment coil, the fine adjustment coil and the power compensation coil; and according to a target ampere-turn number, the heating total power, the coil turn number corresponding to each coil and the resistance value, current values corresponding to each coil of the coarse adjustment coil, the fine adjustment coil and the power compensation coil are coordinated so as to maintain the constant temperature of the objective lens. According to the scheme, the power can be kept constant in different working states, so that the objective lens is kept at a constant temperature.