An arrangement of a structural element for an aerospace vehicle and a battery set. The structural element extends along a longitudinal direction and has a main web, a first flange and a second flange. The flanges extend away from the main web and are defined by flange edges extending along the longitudinal direction. The first flange, the second flange and the main web form a U-shaped profile defining a cavity. The battery set includes a baseplate and at least one battery on the baseplate. The structural element and the battery set are formed such that the baseplate can be releasably attached to the structural element. The baseplate extends between flange edges and the battery is received in the cavity when the battery set is mounted to the structural element. Further, an aerospace vehicle including such an arrangement, a structural element for an aerospace vehicle and a battery set are disclosed.

A vehicle includes: a vehicle body having a bottom portion; a power storage device including a main body having a front wall portion, a rear wall portion, and a lower surface; and a flow regulation plate having a distal end portion at a position spaced downward from the bottom portion, a protruding portion is provided on the lower surface side of the main body; in a fixed state in which the power storage device is fixed to the vehicle body, the lower surface is located downward of the bottom portion; the flow regulation plate is provided to be pivotable; and in the fixed state, the protruding portion abuts against the flow regulation plate to maintain a state in which the flow regulation plate covers at least one of the front wall portion and the rear wall portion.

Disclosed is an unlocking device, battery replacing platform and movable battery replacing platform. The unlocking device comprises: a guide rail; a movable seat mounted on the guide rail; an unlocking ejector rod vertically mounted on the movable seat; and a driving member to drive the movable seat to move horizontally along a plane of the guide rail, the driving member is a driving push rod; the movable seat mounted on the guide rail includes a fixing cylinder fixed vertically mounted direct on the movable seat, and the unlocking ejector rod is movably mounted inside of the fixing cylinder, and a second spring is provided in the fixing cylinder, the second spring is configured to apply an upward thrust to the unlocking ejector rod. The unlocking ejector rod can be controlled to move on the predetermined rail, and the battery locking mechanism on the electric vehicle can be automatically unlocked.

A locking method and an unlocking method are provided. The locking method is used to mount a battery to a fixing seat of an electric vehicle by a locking device. The locking device includes: a lock base including a lock body, a surface of the lock body being provided with a lock groove recessed towards the interior of the lock body, the lock body being internally provided with a lock tongue groove and a lock tongue movably mounted in the lock tongue groove, and the lock tongue groove being in connection with the lock groove; and a lock shaft including a shaft rod configured to be inserted into the lock groove of the lock base to perform unlocking and locking.

Disclosed is a battery swapping system, comprising a battery swapping device, a signal transmission unit, a position sensor, and a detection section. The battery swapping device comprises a master control unit and a battery pack disassembly and assembly unit. The battery pack disassembly and assembly unit is used for clamping the battery pack, the master control unit is used for controlling the battery pack disassembly and assembly unit to move along a preset path. The position sensor is used for generating a stopping instruction upon sensing of the detection section, sending the stopping instruction to the master control unit which is used for stopping moving the battery pack disassembly and assembly unit according to the stopping instruction. According to the present invention, whether a battery pack is mounted in place can be accurately detected, the accuracy and safety of battery pack swapping is ensured and the costs are low.

A movable battery replacing platform includes a travel-driving portion used for driving the movable battery replacing platform to move on the ground; a lifting portion mounted on the travel-driving portion, for lifting a battery during the replacement of the battery; and a battery mounting portion mounted on the top of the lifting portion, for placing a battery to be replaced or a replaced battery. The battery mounting porting is provided with a battery replacing device. The device can use an unlocking device to unlock a battery locked on the bottom of an electric vehicle, automatically aligning an unlocking point of a battery locking mechanism and realizing automatic unlocking in the movement. The angle of an upper board relative to the battery unlocking position can be adjusted by a movement actuating device, so that the unlocking point of the battery can automatically fit where the movable battery replacing platform remains still.

An object of the present invention is to provide a vehicle body bottom structure capable of more reliably protecting a battery pack at a time of a side collision of a vehicle. A vehicle body bottom structure of the present invention includes a battery pack disposed below a floor panel, a side sill extending in a vehicle front-rear direction outside in a vehicle width direction and a battery side frame allowing the side sill to support the battery pack, wherein the battery side frame has a lower surface positioned outside in the vehicle width direction and positioned lower than a support portion for the battery pack, the support portion being formed inside in the vehicle width direction of the battery side frame.

A vehicle battery case is provided. The battery case includes a lower panel and at least one transverse member that is disposed on the lower panel to increase transverse rigidity. Additionally, at least one longitudinal member is disposed on the lower panel to increase longitudinal rigidity, and a sidewall member is attached to an upper surface of the lower panel along a rim of the lower panel.

An electric go-kart includes a frame and a crossbar. The crossbar is fixed to the frame and extends transversely to a left and right side of the frame. An accommodation box is rotationally coupled to each of the left and right side of the crossbar by a connector. A wheel is installed on an outer end of each accommodation box. A steering rod includes a one end fixed to the connector. A support rod is located at a front end of the frame. A stabilizing wheel is pivotably coupled to a front end of the support rod. A seat is fixed on a top side of the frame. A battery is located within the frame.

A tractor trailer battery system having a battery compartment containing one or more battery units which house one or more battery cells, electrical leads from the battery units to a trailer mounted controller in electrical communication with a cab mounted controller which is in electrical communication an electric motor or hybrid engine system. The battery system allows for either the trailer mounted controller or the cab mounted controller to provide principal communication to the electric motor or hybrid engine system.