34results about How to "Small control current" patented technology

The present invention relates to a battery system having a battery which is designed to supply a high-voltage power system and can be connected by at least one of its high-voltage power system terminals via a contactor (10), which battery system comprises a control coil (20), and closes in one state in which a control current flows through the control coil, and opens in a further state in which no current flows through the control coil. In this context, in order to generate the control current, the control coil can be connected via a supply circuit (80) to a supply unit (50) by means of which a predetermined voltage can be made available which is lower than the voltage generated by the battery. In addition, the contactor or the supply circuit comprises an energy accumulator (90) which can be charged with a predetermined quantity of electrical energy by means of the supply unit which is connected to the control coil and makes available the predetermined voltage, and in the event of the predetermined voltage being lost, said energy accumulator can continue to generate the control current flowing through the control coil for a first time by outputting the charged quantity of energy.

The invention discloses a Halbach array deflecting lorentz force magnetic bearing with two degrees of freedom, which comprises a rotor system and a stator system, wherein the rotor system mainly comprises an outer flux sleeve, an outer flux-insulating ring, an outer upper Halbach array magnetic steel, an outer lower Halbach array magnetic steel, an outer upper paramagnetic sleeve, an outer lower paramagnetic sleeve, an outer upper magnetic steel nut, an outer lower magnetic steel nut, a turntable, an outer component nut, an inner flux sleeve, an inner flux-insulating ring, an inner upper Halbach array magnetic steel, an inner lower Halbach array magnetic steel, an inner upper paramagnetic sleeve, an inner lower paramagnetic sleeve, an inner upper magnetic steel nut, an inner lower magnetic steel nut and an inner component nut; the stator system mainly comprises a stator framework, an aluminum substrate, a winding and an epoxy resin glue. According to the Halbach array deflecting lorentz force magnetic bearing, the Halbach array magnetic steel structure is adopted, so that the air-gap field strength is enhanced, the bearing capacity and rigidity of the magnetic bearing are increased, the output of large-top control torque is benefited, the paramagnetic sleeve is utilized to eliminate the flux density fluctuation caused by the splicing gap of the magnetic steel, the flux density uniformity in air gap is promoted and the precision of output torque is increased.

The invention discloses an energy-saving bypass device for illumination. The energy-saving bypass device comprises a power supply [1], a controller [2], a bypass drive unit [3], a relay [4], a contactor [5], a bypass contact [6], a voltage regulating drive [7], a transformer [8], a voltage regulating unit [9], a bypass indication [10], an AC input [11], an AC output [12] and an AC common port [13], wherein the contactor [5] is electrically connected with the relay [4], the bypass contact [6], the voltage regulating unit [9], the bypass indication [10], the AC input [11] and the AC common port [13]; and the transformer [8] is electrically connected with the bypass contact [6], the voltage regulating unit [9], the AC input [11] and the AC output [12]. Bypass control is carried out on a high-voltage side of the transformer, so that the control current is relatively low; and required electric elements are small in size and low in cost.

The invention discloses a vehicle. The vehicle comprises a chassis and a packing case. The packing case is hinged to the chassis. An awning mechanism for shielding the packing box is installed on the packing case. The vehicle comprises an awning mechanism hydraulic oil path, a hydraulic pump, a first reversing valve and a hydraulic motor are arranged in the awning mechanism hydraulic oil path, the first reversing valve is arranged in an oil path between the hydraulic pump and the hydraulic motor, and the hydraulic motor is connected with the awning mechanism. According to the vehicle, the hydraulic motor drives the awning mechanism to be closed and opened, due to the high power of the hydraulic motor, larger traction force is achieved through large torque of the hydraulic motor, and the hydraulic motor drives the awning mechanism to achieve soil scraping and leveling functions. A pressure sensor is arranged in the hydraulic oil path of the awning mechanism, the running resistance of the awning mechanism is automatically recognized, the vehicle automatically retreats after encountering a large obstacle, and the running awning mechanism is protected.