154results about How to "Avoid runaway phenomena" patented technology

The invention provides a high-pressure safety electric interlocking mechanism of an electro-mobile, a control method and an electro-mobile. The mechanism comprises a complete vehicle controller, a first low voltage relay, a collision switch, a high voltage relay, a high voltage connector with an interlocking structure and a power battery system controller, wherein the complete vehicle controller is respectively connected with the control end of the first low voltage relay and a power battery system controller; the first low voltage relay, a load, the high voltage connector and the power battery system controller are sequentially connected to form a high voltage safety electric interlocking loop; the complete vehicle controller controls the first low voltage relay to switch on / off a drive voltage source and detect the on and off states of the high voltage safety electric interlocking loop, and the on and off of a high voltage relay is controlled by the power battery system controller. According to the high-pressure safety electric interlocking mechanism provided by the invention, the monitoring and control of the high voltage safety electric interlocking loop can be realized by the complete vehicle controller, the out of control phenomenon of endangering personnel and vehicles can be prevented, the control performance of a complete vehicle can be improved, and the reliability of the operation of the complete vehicle can be promoted.

The invention discloses an electric vehicle high-voltage loop safe control method and device. The method comprises the steps that whether a charging cover is accidentally opened or not in the vehicle running process is judged through a vehicle control unit according to charging cover opening state real-time detection results; when it is judged that the charging cover is accidentally opened in the vehicle running process by the vehicle control unit, a high-voltage loop is kept being in a closed state so that a vehicle can run; and in the period that the high-voltage loop is kept being in the closed state, the vehicle control unit detects the vehicle running speed and switches the high-voltage loop to the open state after it is detected that the vehicle speed is decreased to zero. Through the electric vehicle high-voltage loop safe control method and device, the out-of-control phenomenon that a charging cover is accidentally (due to mechanical vibration impact and the like) opened and endangers persons and vehicles in the vehicle running process is avoided, the vehicle control performance is improved, and the vehicle operation reliability is improved.

The invention relates to a braking method of an electronic parking braking system, the electronic parking braking system and a vehicle. The braking method includes the steps that when a first wheel speed sensor of a wheel loses efficacy, a wheel speed signal is acquired from a second wheel speed sensor, which normally works, of the wheel, and wheel speed signals of other wheels of the vehicle are acquired; the slip rate of each wheel is acquired according to the wheel speed signals of the wheels; and the clamping force of brake calipers of the wheels is adjusted if the slip rate of the wheels is not within a preset range, so that the slip rate of the wheels is adjusted to be within the preset range. By means of the braking method, the vehicle is kept stable in dynamic braking, and the phenomenon that the vehicle is out of control in the braking process is effectively prevented.

The invention discloses a movable cover controlling device, belonging to the field of an electric heating cooking appliance used for a kitchen. The movable cover controlling device adopts a pressure control way and works within a normal pressure range. The movable cover controlling device comprises a pot cover part, a pot body part, an inner pot and an electric heating disc, wherein a control mechanism is arranged at one side of the connecting part between the pot cover part and the pot body part, and comprises a transmission piece and a switch; the transmission piece used for transmitting the displacement force or the gravity of the pot cover part is arranged correspondingly to the switch up and down; a supporting point mechanism is positioned at the other side of the connecting part between the pot cover part and the pot body part, and comprises a fixing piece and a buckling inserting piece which are respectively arranged on the pot cover part and the pot body part; and the fixing piece and the buckling inserting piece are combined with each other, so that the pot cover part can make opening and closing displacement by taking a combining point of the fixing piece and the buckling inserting piece as a supporting point. The movable cover controlling device solves the problems of high power consumption, single function, poor cooking effect and the like in the prior art, and has the advantages of being simple in structure, saving production cost, being low in probability of failure, and the like.

The invention discloses a lifting device. The lifting device comprises a base. A supporting mechanism, a lifting mechanism and a safety protection mechanism are arranged on the upper surface of the base. A fixed mounting mechanism is arranged on the lower surface of the base. The supporting mechanism is composed of a set of stand columns arranged on the upper surface of the base, rectangular grooves formed in two opposite inner side surfaces in the set of stand columns correspondingly, first telescopic motors arranged on the inner lower surfaces of the rectangular grooves, lifting blocks arranged at the telescopic ends of the first telescopic motors, round grooves formed in two opposite side faces of the lifting blocks, first bearings arranged in the round grooves, rotary rods inserted in the set of first bearings, hoisting shafts arranged on the rotary rods in a sleeving mode, and anti-slip sleeves arranged on the outer surfaces of the hoisting shafts in a sleeving mode. A PLC control system is arranged on the side surface of the base and electrically connected with the supporting mechanism, the lifting mechanism and the safety protection mechanism. The lifting device has the beneficial effects of being high in safety and practicability.

The invention relates to a large-scale excavator motor, which includes a casing, a stator, a rotor, a fan, a windshield and a storage battery. A rotating shaft is arranged in the middle of the casing, the stator is arranged outside the rotor, and One end is provided with a baffle, one side of the baffle is provided with the fan, the other side of the baffle is provided with the stator and the rotor, and the windshield is provided outside the fan, so The storage battery is arranged below the fan, the outer wall of the housing is radially distributed with cooling ribs, the cooling ribs are covered with an outer cover plate, and the outer cover plate is provided with cooling grooves and cooling holes. A cooling fin is provided, and the cooling fin and the cooling hole are arranged in a dislocation manner. The motor designed by the invention can effectively avoid the occurrence of the circuit burning problem caused by excessive temperature, thereby greatly improving the safety and stability of the large excavator.

The invention relates to a motor for an impact pile driver, which includes a casing, a stator, a rotor, a fan, a wind cover and a storage battery. A rotating shaft is arranged in the middle of the casing, the stator is arranged outside the rotor, and A baffle is provided at one end of the baffle, the fan is provided on one side of the baffle, the stator and the rotor are provided on the other side of the baffle, and the windshield is provided outside the fan, The storage battery is arranged below the fan, and heat dissipation ribs are radially distributed on the outer wall of the housing. The heat dissipation ribs are covered with an outer cover plate, and the outer cover plate is provided with heat dissipation grooves and heat dissipation holes. The heat dissipation grooves A cooling fin is arranged in the middle, and the cooling fin and the cooling hole are arranged in a dislocation manner. The motor designed by the invention can effectively avoid the problem of circuit burnout caused by excessive temperature, thereby greatly improving the safety and stability of the impact pile driver.

The invention discloses a novel unmanned aerial vehicle handle and a using method thereof, and belongs to the field of unmanned aerial vehicles, the novel unmanned aerial vehicle handle comprises a control handle, a pair of rocker ball grooves are formed in the upper end of the control handle, and rocker control assemblies are arranged in the rocker ball grooves; the upper end of the control handle is provided with a starting return button located in the rear sides of the rocker control assemblies, the upper end of the control handle is provided with a grade speed button set, the grade speed button set is located between the two rocker control assemblies, and by arranging the two rocker control assemblies, a controller must control the unmanned aerial vehicle to fly with the two hands; the control stability of the unmanned aerial vehicle is effectively improved, the out-of-control phenomenon caused by too large single-hand control amplitude is effectively avoided, the operation difficulty of the control handle is reduced, constant control over the flight speed of the unmanned aerial vehicle is effectively achieved through the grade speed button set, the control difficulty of the unmanned aerial vehicle is reduced, operation is easy and convenient, and use of a green hand is facilitated.

The invention discloses a double-drive double-bearing type racing car which comprises a car body, two driving wheels, two driven wheels, an electric motor, a cantilever A, a cantilever B and a car shaft, wherein the driving wheels are respectively arranged at the left and right sides of the car body along the same axial direction; the two driven wheels and the two driving wheels are respectively arranged at the same side; the car shaft is located at the middle part of the bottom of the car body; the driving wheels are connected with an electric motor shaft in a manner of key connection, the electric motor shaft is fixedly connected to the cantilever A, and the driving wheels rotate along with the electric motor; and the driven wheels are movably connected with the car shaft through the cantilever B. In the double-drive double-bearing type racing car disclosed by the invention, the driving wheels and the driven wheels at the same side of the car body are fixedly connected in a flexiblemanner of separated connection, so that no interference exists between height position states of the driving wheels and the driven wheels, and the out-of-control phenomenon of the racing car due to the unevenness of the ground is avoided.

The invention relates to an electric motor car controller comprising a power interface, a control circuit and a motor signal interface, wherein the control circuit comprises an undervoltage protection circuit, a charging state detection circuit, a rolling handle input circuit, a rolling handle failure protective circuit, a power tube breakdown detection circuit, an electrified time sequence protective circuit, a relay, a current-limiting detection circuit of current, a PWM (Pulse-Width Modulation) control circuit, a power tube driver circuit, a power tube voltage-stabilizing protective circuit and a power tube. With the undervoltage protection circuit, the invention avoids the damage caused by overdischarge of the storage battery; with the power tube breakdown detection circuit and a rolling handle state detection circuit, the invention avoids the runaway generated by relay adhesion, PWM modulation chip damage, power tube driver circuit damage and broken-down faults of the power tube and can better effectively control the motor. In addition, the invention can self-diagnose electric faults, solves the problem of eliminating low fault speed and has low fault rate and easier debugging and modification.