A seat post assembly for a bicycle has a first tube with a first distal end and a second tube with a second distal end. The first and second tubes are movable relative to one another to establish a distance between the first and second distal ends. A first pressure chamber has a loaded pressure proportional to a load applied along the tube axis. A second pressure chamber has a second pressure not proportional to the load. A flow path connects the first and second pressure chambers. A valve is disposed along the flow path and is configured to move between a closed position closing the flow path and an open position opening the flow path between the first and second pressure chambers. An isolator of the valve is configured to nullify any resultant force produced by the loaded pressure of the first pressure chamber acting on the isolator.

A seat post assembly for a bicycle has a first tube with a first distal end and a second tube with a second distal end. The first and second tubes are movable relative to one another to establish a distance between the first and second distal ends. A first pressure chamber has a loaded pressure proportional to a load applied along the tube axis. A second pressure chamber has a second pressure not proportional to the load. A flow path connects the first and second pressure chambers. A valve is disposed along the flow path and is configured to move between a closed position closing the flow path and an open position opening the flow path between the first and second pressure chambers. An isolator of the valve is configured to nullify any resultant force produced by the loaded pressure of the first pressure chamber acting on the isolator.

A straddle-type electric vehicle includes two approximately rectangular parallelepiped batteries, a battery case in which the batteries are housed, battery-side terminals provided on bottom surfaces of the batteries, and case-side terminals engaged with the battery-side terminals. The two batteries are arranged next to each other in a vehicle width direction. An operation lever for connecting or separating the battery-side terminals and the case-side terminals to/from each other is provided. The operation lever is arranged in a middle in the vehicle width direction between the two batteries, and the battery-side terminals and the case-side terminals are arranged nearer outer sides in the vehicle width direction. A pair of front and rear link mechanisms for coupling the operation lever and the case-side terminals to each other is provided in front of and behind the battery case.

An electric balance bike includes: a bike frame having a seat at an intermediate position thereof, a head tube at a front end thereof, and a rear fork at a rear end thereof; a front fork connected to a lower end of the head tube; a handlebar connected to an upper end of the head tube; a front wheel connected to the front fork; a rear wheel connected to the rear fork; an actuating assembly arranged between the bike frame and the rear wheel, the actuating assembly having an actuator located under an intermediate section of the bike frame, a driving member located at an axle of the rear wheel, and a driving belt that are wrapped around the actuator and the driving member; and a rechargeable lithium battery detachably connected to the actuator.

A holding device for releasably supporting an energy store, in particular, an energy store for a bicycle, on a frame, in particular, on a bicycle frame. The holding device includes at least one locking unit, which is intended, in a locked state, for axially fixing the energy store in position and releasably locking it. The locking unit includes at least one first locking element and at least one second locking element corresponding to the first locking element.

A battery housing apparatus including a housing portion forming a housing space in which a battery is removably housed, a holding portion configured to hold the battery, and an openable cover portion closing the housing space. The housing portion includes a support portion rotatably supporting the holding portion about a rotational axis so that the battery is movable between a housed position and a non-housed position in the housing space.

A battery attachment/detachment structure for a saddle-ride type electric vehicle includes substantially rectangular parallelepiped batteries for supplying electric power to an electric motorcycle, a battery case in which the batteries are housed, a battery-side terminal provided on the bottom surface of each battery, and a case-side terminal engaged with the battery-side terminal. An operation lever for connecting or separating the battery-side terminal and the case-side terminal to/from each other by being operated in the up-and-down direction of a vehicle body, and a locking member for holding the operation lever at a position where the battery-side terminal and the case-side terminal are connected to each other are provided. The locking member regulates the movement of the operation lever towards the upper side of the vehicle body by engaging with the operation lever. The disclosed structure can regulate the movement of housed batteries to maintain excellent electrical connection with a simple configuration.

A battery attachment/detachment structure for a saddle-ride type electric vehicle includes substantially rectangular parallelepiped batteries for supplying electric power to an electric motorcycle, a battery case in which the batteries are housed, a battery-side terminal provided on the bottom surface of each battery, and a case-side terminal engaged with the battery-side terminal. An operation lever for connecting or separating the battery-side terminal and the case-side terminal to/from each other by being operated in the up-and-down direction of a vehicle body, and a locking member for holding the operation lever at a position where the battery-side terminal and the case-side terminal are connected to each other are provided. The locking member regulates the movement of the operation lever towards the upper side of the vehicle body by engaging with the operation lever. The disclosed structure can regulate the movement of housed batteries to maintain excellent electrical connection with a simple configuration.

A universal battery is provided with load balancing and a battery module and an energy storage system electrically coupled to the battery module and configured to bidirectionally transfer energy from and to the battery module. The energy storage system is operable in a first operating state in which the energy is transferred from the energy storage system to the battery module to charge the battery module, and a second operating state in which the energy is transferred from the battery module to the energy storage system to discharge the battery module. An electrical connection electrically couples the energy storage system to a power source. A controller is operably coupled to the battery module and the energy storage system. The controller is configured to control a charging state of the battery module.

The present invention relates to a method of turning on an electric scooter by supplying power to the ECU when the interchangeable battery pack is driven by eliminating the auxiliary battery that always supplies power to the ECU that turns on the start of the electric scooter, providing an interchangeable battery packs using wireless communication type, and using a wireless communication signal received from a smart device as a driving signal of the interchangeable battery pack.