35results about How to "No power interruption" patented technology

The invention discloses a novel hybrid power system and a driving mode of the novel hybrid power system. An output shaft of an engine is connected with a first electric motor through a one-way clutch, an output shaft of the first electric motor is connected with a first input shaft of a gearbox, an output shaft of a second electric motor is connected with a second input shaft of the gearbox, an electric control clutch is arranged between the first input shaft of the gearbox and the second input shaft of the gearbox, at least three gears of structures are arranged in the gearbox, the even number gear and the odd number gear are respectively arranged on the first input shaft and the second input shaft, and each gear of structures on the same input shaft realize the gear switching through a synchronizer. Through adopting the mode, the novel hybrid power system can realize various driving modes, and the goals of energy saving and emission reduction are reached. The double advantages of extended-range pure electric driving and the plugging-in hybrid motive power driving are realized, the pure electric driving can be realized by aiming at the crowded situation of urban work conditions, and the high-power driving output under the high-speed work condition can also be realized.

The invention discloses a pantograph carbon slider assembly and an abrasion detection method for the same. The pantograph carbon slider assembly comprises a pantograph and a support for supporting thepantograph, wherein a detecting groove is formed in the reverse surface of the end, which is in contact with a cable, of the pantograph; a variable-resistance block is mounted in the detecting groove; an insulating plate is fixed on the bottom surface of the variable-resistance and is made of an insulating material; the insulating plate is fixedly connected with the top of a tightening shaft; thebottom of the tightening shaft penetrates through a guiding groove formed in the support and a fixed plate arranged in a protecting shell and then is fixedly connected with the top of a guiding column; the fixed plate is arranged in a cavity of the protecting shell; a spring sleeves the guiding column, and the bottom of the guiding column and the inner barrel of a tightening head are assembled; the outer wall of the tightening head and the protecting shell are assembled in a thread screwed manner; the tightening shaft and the fixed plate can be assembled slidably; and the resistance of the variable-resistance block is greater than that of the pantograph. The pantograph carbon slider assembly is simple in structure and convenient to use; whether the pantograph carbon slider assembly needsto be changed or not can be judged accurately; and the pantograph carbon slider assembly is low in manufacturing cost and suitable for being popularized widely.

The invention discloses a hybrid power coupling mechanism. The hybrid power coupling mechanism comprises two motors, two planetary lines and a shaft tooth system, wherein an engine is connected with aplanet carrier of the first planetary line; a generator is connected with a sun gear of the first planetary line; a brake and a clutch are arranged on the first planetary line; and by reasonable control over the brake and the clutch, a range extending driving mode can be realized. A driving motor is connected with a sun gear of the second planetary line, a planet carrier of the second planetary line is fixed, and an inner gear ring of the second planetary line outputs. The invention further discloses a corresponding control system and method. By an embodiment of the invention, various drivingmodes including a pure electric mode, a range extending driving mode and a hybrid power mode and the like can be realized, only three shafts are required, the structure is compact, and requirements for space are reduced.

The invention relates to a battery management system, in particular to a power limiting method for an electric vehicle. The power limiting method comprises the steps that the SOC of a battery, the total voltage of the battery and the lowest temperature of a cell in the battery are obtained; first power is obtained according to the SOC, the total voltage of the battery and the lowest temperature ofthe cell in the battery; the lowest voltage of the cell is obtained; whether the first power meets the power limiting condition of the cell or not is detected according to the lowest voltage of the cell and the lowest temperature of the cell, if so, second power is obtained according to the variation of the lowest voltage of the cell; and the minimum between the first power and the second power is used as the power output by a control motor. According to the power limiting method for the electric vehicle, the power performance is guaranteed when the voltage of a power battery is high, and itis guaranteed that powder failure does not appear on a vehicle when the voltage of the power battery is low.

The invention discloses a dual-motor multi-mode pure-electric drive system and a drive mode of the dual-motor multi-mode pure-electric drive system. The system comprises a first motor, a second motor,a first motor reduction gear set, a second motor reduction gear set, a power input shaft, a one-way clutch, a front planet row, a rear planet row, an electronic control clutch and a brake. The frontplanet row and the rear planet row are connected through a planet carrier, a front planet row sun gear is connected with the input shaft through the brake and the electronic control clutch, a front planet row gear ring is fixedly connected with the input shaft, a rear planet row sun gear is fixedly connected with the input shaft, and a rear planet row gear ring is fixedly connected with the inputshaft. Through operation of the electronic control clutch and the brake, conversion of a low-speed gear and a high-speed gear is achieved. Through combined output of the two motors, the combination ofthe power performance and the economical efficiency is optimal. The system is easy to operate, free of power interruption, easy to achieve and high in practicability.

The invention discloses a failure guiding safety principle-based contactor automatic switching control method. Contactors are connected in series into a main circuit and a standby circuit respectively, and a control circuit is separated from a driving circuit. When the control circuit transmits a signal to the driving circuit, the driving circuit releases a corresponding contactor; and the driving circuit forms interlocking between two contactor driving circuits by adopting diodes and triodes, and when the two contactors do not receive a releasing signal, only a current contactor is kept in an off state, and the other contactor is not switched off. By the method, the separation of a high voltage circuit from a low voltage circuit and the separation of a device with long service life from a quick-wearing device are realized, electromagnetic interference between the high voltage circuit and the low voltage circuit and between the device with the long service life and the quick-wearing device is reduced, potential safety hazards of the circuits are reduced, and simultaneously, maintaining cost and maintaining difficulties are reduced. When a control board fails, a power supply system can maintain an original power supply state, and the software upgrading of the control board may not cause the interrupt of power supply, so higher power supply reliability is achieved.

The invention discloses a planetary gear transmission. The transmission comprises a shell, a planetary gear set, a brake assembly and a clutch assembly, the brake assembly comprises a dual disc arranged between the shell and the planetary gear set, a wedge block assembly is arranged at the rear side of the dual disc, a driver push disc is arranged at the front side of the dual disc, and a supporting piece is arranged at the rear side of the wedge block assembly. The gear shifting process of the transmission is smooth, and power interruption is avoided; during braking, a traditional multi-piece friction plate is not needed, a one-way clutch is not needed, and a gear shifting mechanism is small in size; and in the braking process, force for pressing a multi-piece type friction pair is not needed, the requirement for power of a driver is low, and the size, cost and energy consumption of a braking unit power device can be greatly reduced.

The invention discloses a two-gear transmission. The two-gear transmission comprises a normal meshing tooth two-way overrunning clutch, a shunting assembly and a brake; and the shunting assembly comprises an input element and two shunting elements, one shunting element is directly connected with the output end of the normal meshing tooth two-way overrunning clutch, the other shunting element is directly connected with the input end of the normal meshing tooth two-way overrunning clutch and externally provided with the brake, the input element of the shunting assembly serves as input of the two-gear transmission, and output of the normal meshing tooth two-way overrunning clutch serves as output of the two-gear transmission. When the brake does not work, two transmission paths simultaneouslysupply power to achieve joint driving, and the low speed and the large torque are output; and when the brake works, one transmission path is locked, and the high speed and the low torque are output.According to the two-gear transmission, shifting of two gears can be achieved only through one brake, the requirements for a control system are low, the gear shifting mode is simple and reliable, thegear shifting process is steady and simple, power failure can not occur in the gear shifting process, and the two-gear transmission is an ideal transmission of an electric automobile.

The invention relates to the technical field of automobiles and discloses an automobile hybrid power coupling system and a hybrid power control method and device; an engine of the coupling system is connected with a generator through a planetary row, and a driving motor is connected with a differential mechanism through a transmission device; the planetary row comprises three rotating elements, one of the three rotating elements is provided with a first brake, and the other two of the three rotating elements are respectively connected with the engine and the generator in a one-to-one correspondence mode; the planetary row is in transmission connection with the transmission device through the rotating element provided with the first brake; a second brake is arranged on an output shaft of the generator; and a third brake is arranged on the output shaft of the driving motor. Regulation of the speed ratio of the output shaft of the engine to the output shaft of the generator can be realized through the planetary row, so that the requirements for the dynamic performance and the economical efficiency of the automobile can be simultaneously met; moreover, the coupling system is compact in structure, and through the hybrid power control method and device, switchover between various working modes can be realized.

A single-actuator two-gear planetary gear transmission comprises a shell, a planetary row, an actuator assembly, a front brake assembly and a rear brake assembly, the front brake assembly comprises a blocking piece arranged in the middle of the shell, a wedge-shaped block assembly is arranged on the front side of the blocking piece, the actuator assembly is arranged on the front side of the wedge-shaped block assembly, and the rear brake assembly is arranged on the rear side of the blocking piece and connected with the actuator assembly through a transmission rod. The transmission only uses one actuator, so that the cost is saved, the occupied space is reduced, and installation is convenient; no one-way clutch is needed, but impact can be avoided during gear shifting, the cost is saved, the occupied space is reduced, and installation is convenient; in the gear shifting process, only one actuator needs to be controlled to work, coordination to the action time of two actuators does not exist, control is simple, and the possibility that two gear shifting execution units are locked at the same time due to control errors does not exist; and the gear shifting process is smooth and free of power interruption.

The invention relates to the field of vehicles, and particularly discloses a two-gear pure electric speed change system, a pure electric engineering vehicle and a control method thereof. The two-gearpure electric speed change system can realize power output adjustment and change under different driving conditions. In the case of large loads, a brake is separated from a gear ring and is combined with a clutch, first-gear operation is carried out, and high torque output is achieved; in the case of light loads, the brake is combined with the gear ring and separated from the clutch, second-gear operation is carried out, and therefore the rotating speed is increased; and in the gear shifting process, since the clutch and the brake have a combined state all the time, no power interruption can be achieved in the gear shifting process. The pure electric engineering vehicle comprises the above-mentioned two-gear pure electric speed change system, gear shifting can be carried out according to the optimal power of the pure electric engineering vehicle, a motor runs in a high-efficiency rotating speed zone as much as possible, the loss is reduced, and the efficiency of mechanical work is improved.

The invention is applicable to the technical field of electric machinery, and provides a special socket for a hairdryer. The special socket comprises an electric connector assembly and a clamp connector assembly. The electric connector assembly comprises a plug plate, an electric connector head, a baffle plate and a plug. The outer surface of the plug plate is provided with a socket hole. The electric connector head and the and the plug are fixedly connected to the baffle; the electric connector head is positioned on the right side of the baffle platre; the connector is aligned with the jack and the connector is inserted into the jack, At this time, that electric connection between the hair dryer and the external pow supply is completed, the adjusting lever is released, At this time, thatbaffle plate is jam by the baffle plate, so as to realize the clamping and fixing of the plug, Compared with the existing plug-in board, the novel plug-in board can engage and connect the plug and theplug-in board, and the plug and the plug-in board can be tightly connected no matter how the position of the hairdryer is moved when the socket is used with the hairdryer, so that the power supply isnot interrupted, the use is more convenient, and the use of the plug and the plug-in board is convenient.