Abstract: A structure includes a transmission axle rotatably mounted at a center of a housing. The transmission axle includes a sun gear mounted thereon. An internally-toothed ring track is fixed to an inner circumference of the housing. A planetary gear set is arranged between the sun gear and the internally-toothed ring track. The planetary gear set includes a plurality of stepped planetary gears arranged around the sun gear for self-spinning and orbiting around the sun gear. Each stepped planetary gear includes a first toothed portion meshing with both the sun gear and the internally-toothed ring track and a second toothed portion rotatable in unison with the first toothed portion. An output member is fit over the planetary gear set and includes an inner circumference formed with an internal toothed circumference meshing with the second toothed portion of each stepped planetary gear.

Abstract: A coupling structure includes a shaft, a tube, and a connection assembly. An end of the shaft is formed with a plurality of axial insertion troughs extended in an axial direction and arranged in an alternate manner. The tube includes a penetration-axle hole formed in a center thereof and corresponding to the penetration-axle section of the shaft. A plurality of radial insertion troughs, in the form of a recessed surface, are formed in an inner circumferential surface of the penetration-axle hole of the tube. The connection assembly includes a coupling block that has an outer circumference formed with a plurality of radial insertion blocks corresponding to the radial insertion troughs of the tube and a plurality of axial insertion blocks corresponding to the axial insertion troughs of the shaft, so that a fastening member may be used to selectively fasten the coupling block between the shaft and the tube.

Abstract: A power switching structure includes an input shaft, a detection shaft sleeve fit over the input shaft, an assisting power assembly, and an output assembly selectively drivable by the input shaft and the assisting power assembly. The output assembly includes first and transmission sleeves rotatably mounted to the input shaft. The assisting power assembly includes a power member rotatably mounted to the second transmission sleeve. A one-way bearing is arranged between the first and second transmission sleeves and the power member. An output member is mounted on the second transmission sleeve. A micro-motion static frictional force is induced between the first and second transmission sleeves and the input shaft to allow the detection shaft sleeve to directly and accurately measure a torque value of the input shaft. The one-way bearing arranged between the first and second transmission sleeves and the power member allows for selection among sources of power.

Abstract: A speed changer includes a transmitting mechanism and at least one speed-increasing mechanism. The transmitting mechanism includes a primary sun gear mounted by a one-way bearing a fixed shaft. The primary sun gear is in mesh engagement with primary planetary gears rotatably mounted to an output frame and in mesh engagement with an inner circumference of a toothed ring. The speed-increasing mechanism is rotatably mounted by a tubular shaft to the fixed shaft. The tubular shaft is provided with a sun gear having a diameter smaller than the primary sun gear. Planetary gears in mesh engagement with the sun gear are rotatably mounted on the output frame and are combined with and synchronously rotatable with the primary planetary gears. The tubular shaft of the speed-increasing mechanism is provided with an arresting assembly to selectively stop rotation of the tubular shaft.

Abstract: A speed-change mechanism includes an output shaft on which a transmission module and a speed step-up module are mounted. The transmission module includes a driving roller that drives the output shaft in a single direction. The speed step-up module includes a connecting gear and a speed step-up gear that are rotatably and fixedly mounted to the output shaft, respectively, and a planet speed-change wheel assembly arranged therebetween. The speed step-up module includes an arrestor assembly. At a low speed, the planet speed-change wheel assembly is idling as being set in an orbiting motion and input power is suppled through the driving roller driving the output shaft in the single direction; and at a high speed, the arrestor assembly stops the orbiting motion of the planet speed-change wheel assembly to allow the speed-change gear of the planet speed-change wheel assembly to switch to a spinning motion to step up the speed.

Abstract: A speed changer includes a transmitting mechanism and at least one speed-increasing mechanism. The transmitting mechanism includes a primary sun gear mounted by a one-way bearing a fixed shaft. The primary sun gear is in mesh engagement with primary planetary gears rotatably mounted to an output frame and in mesh engagement with an inner circumference of a toothed ring. The speed-increasing mechanism is rotatably mounted by a tubular shaft to the fixed shaft. The tubular shaft is provided with a sun gear having a diameter smaller than the primary sun gear. Planetary gears in mesh engagement with the sun gear are rotatably mounted on the output frame and are combined with and synchronously rotatable with the primary planetary gears. The tubular shaft of the speed-increasing mechanism is provided with an arresting assembly to selectively stop rotation of the tubular shaft.

Abstract: A control device and a control method for equally charging and discharging battery units may prolong life of the battery units of the control device. The control method includes steps of: detecting the battery units to generate measuring parameters; calculating determining parameters; calculating an average value of the determining parameters; selecting one of the battery units according to an operating status of the battery units; calculating a setting parameter; setting a pause time; charging or discharging the selected battery unit after stopping charging or discharging the selected battery unit for the pause time. When the battery units are charged or discharged, an overcharged or over-discharged battery unit may be selected. The selected battery unit may be stopped charging or discharging for the pause time. Therefore, life of the battery units may be prolonged.

Abstract: A battery parallel device having a charge path and a discharge path with equal impedances includes at least one first parallel apparatus. The at least one first parallel apparatus has first battery units each having a plurality of first batteries, a first positive connector electrically connected to positive electrodes of the first batteries, a first negative connector electrically connected to negative electrodes of the first batteries, a first positive electrode connector formed on the first positive connector, a first negative electrode connector formed on the first negative connector, first current paths formed between the first positive electrode connector and the positive electrodes, and second current paths formed between the first negative electrode connector and the negative electrodes. A total path length of the first current paths and a total path length of the second current paths corresponding to the same first batteries are equal. Therefore, inrush current may be decreased.

Abstract: A weldingless cylindrical battery pack device has a first lid body, a second lid body, multiple cylindrical batteries, multiple screwing elements, a first elastic piece, and a second elastic piece. The cylindrical batteries are mounted between the first lid body and the second lid body. The first lid body and the second lid body are screwed together by the screwing elements. Further, the first elastic piece is electronically connected to positive electrodes of the cylindrical batteries, and the second elastic piece is electronically connected to negative electrodes of the cylindrical batteries. The cylindrical batteries do not need to be welded, and the weldingless cylindrical battery pack device may be easily and quickly manufactured.

Abstract: An emergency startup device of an electric vehicle has a high-voltage power battery, a motor driver, a high-voltage control box, a vehicle controller, a low-voltage DC battery, and an emergency starter. The vehicle controller turns on or off the high-voltage control box. When the low-voltage DC battery does not have enough electricity to provide electricity to the vehicle controller, the vehicle controller may not turn on the high-voltage control box, the high-voltage power battery may not provide electricity to the motor driver, and the electric vehicle may not be driven. When the emergency starter is operated, the high-voltage power battery charges the low-voltage DC battery through the emergency starter. Then, the low-voltage DC battery provides enough electricity to the vehicle controller, and the electric vehicle is normally driven.

Abstract: An emergency startup device of an electric vehicle has a high-voltage power battery, a motor driver, a high-voltage control box, a vehicle controller, a low-voltage DC battery, and an emergency starter. The vehicle controller turns on or off the high-voltage control box. When the low-voltage DC battery does not have enough electricity to provide electricity to the vehicle controller, the vehicle controller may not turn on the high-voltage control box, the high-voltage power battery may not provide electricity to the motor driver, and the electric vehicle may not be driven. When the emergency starter is operated, the high-voltage power battery charges the low-voltage DC battery through the emergency starter. Then, the low-voltage DC battery provides enough electricity to the vehicle controller, and the electric vehicle is normally driven.

Abstract: A weldingless cylindrical battery pack device has a first lid body, a second lid body, multiple cylindrical batteries, multiple screwing elements, a first elastic piece, and a second elastic piece. The cylindrical batteries are mounted between the first lid body and the second lid body. The first lid body and the second lid body are screwed together by the screwing elements. Further, the first elastic piece is electronically connected to positive electrodes of the cylindrical batteries, and the second elastic piece is electronically connected to negative electrodes of the cylindrical batteries. The cylindrical batteries do not need to be welded, and the weldingless cylindrical battery pack device may be easily and quickly manufactured.

Abstract: A control device and a control method for equally charging and discharging battery units may prolong life of the battery units of the control device. The control method includes steps of: detecting the battery units to generate measuring parameters; calculating determining parameters; calculating an average value of the determining parameters; selecting one of the battery units according to an operating status of the battery units; calculating a setting parameter; setting a pause time; charging or discharging the selected battery unit after stopping charging or discharging the selected battery unit for the pause time. When the battery units are charged or discharged, an overcharged or over-discharged battery unit may be selected. The selected battery unit may be stopped charging or discharging for the pause time. Therefore, life of the battery units may be prolonged.

Abstract: A battery parallel device having a charge path and a discharge path with equal impedances includes at least one first parallel apparatus. The at least one first parallel apparatus has first battery units each having a plurality of first batteries, a first positive connector electronically connected to positive electrodes of the first batteries, a first negative connector electronically connected to negative electrodes of the first batteries, a first positive electrode connector formed on the first positive connector, a first negative electrode connector formed on the first negative connector, first current paths formed between the first positive electrode connector and the positive electrodes, and second current paths formed between the first negative electrode connector and the negative electrodes. A total path length of the first current paths and a total path length of the second current paths corresponding to the same first batteries are equal. Therefore, inrush current may be decreased.

Abstract: An electric device for a bicycle has a casing, a pedal shaft, a motor shaft, a rotor assembly, a stator assembly, a gear assembly, a chain wheel and a control unit. Because a normal of the circuit board of the control unit is parallel to the motor shaft, the circuit board can be axially adjacent to a side surface of the rotor assembly to detect the rotor assembly. Thus, one single circuit board can detect the rotor assembly as well as maintain electric connection with other components, thereby saving space and reducing the volume of the casing. As the casing has a reduced volume, interference with the rear wheel can be avoided.

Abstract: An information exchange apparatus has a processing unit, a wireless communication unit, a storage unit, a mainframe connection port and an identification module. The wireless communication unit has a transmitter and a receiver connected to the processing unit. The storage unit is connected to the processing unit and stores a device identification (ID) code, user information and data exchange records. The mainframe connection port is connected to the processing unit for connecting to an electronic device. The identification module is connected to the processing unit, has a secure memory and stores an identification procedure. The secure memory stores the device ID code and an identification key. The identification module allows the processing unit to access data in the storage unit and exchange data in the storage unit with other information exchange apparatus when the processing unit passes the identification procedure.

Abstract: An electromechanical control system of an electric bike integrating a smart mobile device and cloud services therewith enables a controller of the electric bike to independently monitor and control operation of an electric motor, is integrated with an external smart mobile device with a communication interface thereof, configures cycling control parameters of the controller with the externally available cycling control parameters through an user interface provided by the smart mobile device to adapt to cyclists' physical strength. Cycling information and bike information can be displayed on the smart mobile device or make them openly available through the online function of the smart mobile device for cyclists to easily record or manage related information during bike cycling.

Abstract: An electric device for a bicycle has a casing, a pedal shaft, a motor shaft, a rotor assembly, a stator assembly, a gear assembly, a chain wheel and a control unit. Because a normal of the circuit board of the control unit is parallel to the motor shaft, the circuit board can be axially adjacent to a side surface of the rotor assembly to detect the rotor assembly. Thus, one single circuit board can detect the rotor assembly as well as maintain electric connection with other components, thereby saving space and reducing the volume of the casing. As the casing has a reduced volume, interference with the rear wheel can be avoided.

Abstract: An electromechanical control system of an electric bike integrating a smart mobile device and cloud services therewith enables a controller of the electric bike to independently monitor and control operation of an electric motor, is integrated with an external smart mobile device with a communication interface thereof, configures cycling control parameters of the controller with the externally available cycling control parameters through an user interface provided by the smart mobile device to adapt to cyclists' physical strength. Cycling information and bike information can be displayed on the smart mobile device or make them openly available through the online function of the smart mobile device for cyclists to easily record or manage related information during bike cycling.

Abstract: A torque sensor has an envelope tube, a middle cylinder mounted in the envelope tube, a inner cylinder mounted through the middle cylinder, a resilient element connected to the middle cylinder and the inner cylinder, a first disc and a second disc respectively attached to the inner cylinder and the middle cylinder, and a detection unit detecting a displacement angle of the second disc and the first disc to calculate a torque applied to the inner cylinder. The torque sensor has a simple structure, fast, sensitive and accurate torque sensing ability, and can be used on all kinds of mechanisms that rotate when a force is applied thereon to calculate and quantify amounts of energy and work of the exerciser according to the torque.