A battery device for a vehicle, which can be miniaturized while including ancillary instruments such as a relay device. The battery device is mounted in a lower portion of a vehicle, and including a battery case; a plurality of battery modules accommodated in the battery case and arranged such that at least some of the battery modules are stacked in a plurality of levels; and a first relay device that switches connection and disconnection between external electric devices and the battery modules. The first relay device is disposed on a side in a vehicle width direction of a portion where the battery modules are stacked in a plurality of levels.

To provide a vehicle drive device capable of efficiently driving a vehicle by using a motor without falling into the vicious cycle between enhancement of driving via the motor and an increase in vehicle weight. The present invention is a vehicle drive device (10) having a motor for driving the wheels of a vehicle and includes a front wheel motor (20) for driving front wheels (2b) of a vehicle (1) and a battery (18) and a capacitor (22) that supply electric power for driving the front wheel motor (20), in which the voltage of the battery (18) and the capacitor (22) connected in series is applied to the front wheel motor (20) and the capacitor (22) is disposed between the left and right front wheels (2b) of the vehicle (1).

An electric vehicle includes a seat which is supported on a floor panel via a support member, a battery pack which is disposed behind the seat, and an air intake duct which has an air inlet and through which air taken in from the air inlet is supplied to the battery pack. The air inlet is disposed at a position overlapping the support member as viewed from above, and is located between the floor panel and the support member in an up-down direction.

An open cabin electric wheeled vehicle includes a large-capacity driving battery having a volume energy density higher than the volume energy density of a lead storage battery, the large-capacity driving battery being configured to supply electric power to a driving electric motor. The vehicle also includes a fuel-type electric power generation apparatus that generates electric power using a fuel. As seen from a leftward direction or a rightward direction, between the large-capacity driving battery and the fuel-type electric power generation apparatus, a recess overlaps with a passage region which allows people or baggage to pass through of an entrance and exit opening portion having no door, so that a bottom end of a front wall portion, a bottom end of a rear wall portion, and a bottom portion are located further downward than a top end of the large-capacity driving battery which has a volume energy density higher than the volume energy density of a lead storage battery, and a top end of the fuel-type electric power generation apparatus.

An electric vehicle includes a seat which is supported on a floor panel via a support member, a battery pack which is disposed behind the seat, and an air intake duct which has an air inlet and through which air taken in from the air inlet is supplied to the battery pack. The air inlet is disposed at a position overlapping the support member as viewed from above, and is located between the floor panel and the support member in an up-down direction.

In an embodiment, a clamping bar holder component configured to be secured to an endplate of a battery module includes a plurality of clamping bar holders configured to hold a respective plurality of clamping bars and to facilitate transitions of each of the plurality of clamping bars between a parked state and an unparked state. In the parked state, each clamping bar is secured by a respective clamping bar holder inside of a respective clearance threshold so as to permit the battery module to be inserted into a battery module compartment and/or to be removed from the battery module compartment. In the unparked state, each clamping bar extends out of the clamping bar holder past the clearance threshold so as to block removal of the battery module from the battery module compartment.

An electric or hybrid sport car comprising a battery pack incorporating at least one structural element of the vehicle frame, and wherein said structural element can be removed from the vehicle frame only together with the battery pack.

A folding electric wheelchair with elevating seat that provides the user an electronic driving system powered by two lithium-ion batteries that is sealed to be weatherproof, able to drive over different terrain types and slope grades on any given day whether it's raining or sunny, lightweight, and portable for transportation, travel-friendly, compact in overall size when in the folded position to fit into a small space for storage. An ergonomically contoured seat with an actuator that can raise and lower the seat base overall height. A bump dampening and terrain vibration system with the supporting frame pieces (34), (42), and (50) having an oval shape. The manner of how the embodiment operates to fold and unfold consists of specific hinge joint embodiments including: (46), (48), (58) and (64).

A battery for an industrial truck comprises a battery body that comprises a first base body and a second base body. The second base body is positioned adjacent to the first base body. The first base body and the second base body extend a same length in one dimension and the first base body has a greater height than the second base body.

A battery pack for a vehicle electrical system includes a casing for receiving one or more battery modules. The battery modules are insertable into a casing of the battery pack by sliding couplers along pairs of rails and are securable to the ends of the rails. After insertion, the rails thermally insulate one battery module from other battery modules coupled to the casing. In some examples, a first stiffness or a first mechanical frequency of the casing with the one or more battery modules inserted may differ from a second stiffness or a second mechanical frequency associated with a body of a vehicle or another component associated therewith by a threshold amount. Additionally, the casing may be configured with vents for venting the hot gases, such as those generated by a battery module in a thermal runaway event.