A battery pack is provided including: a plurality of battery cells arranged in multiple battery cell rows; one or more heat exchange spaces; and a device for providing heat exchange to the battery pack. Further, the device includes a heat conduction medium passage arranged in the heat exchange spaces, such that the heat conduction medium passage surrounds multiple battery cells each battery cell row. The heat conduction medium passage is provided with at least a first group of channels and a second group of channels, which are in contact with the surface of each battery cell, and a heat conduction medium is provided in the first group of channels and the second of channels. The heat conduction medium flows in the first group of channels in a direction opposite from the flow of the heat conduction medium in the second group of channels.

A battery pack is provided including: a plurality of battery cells arranged in multiple battery cell rows; one or more heat exchange spaces; and a device for providing heat exchange to the battery pack. Further, the device includes a heat conduction medium passage arranged in the heat exchange spaces, such that the heat conduction medium passage surrounds multiple battery cells in each battery cell row. The heat conduction medium passage is provided with at least a first group of channels and a second group of channels, which are in contact with the surface of each battery cell, and a heat conduction medium is provided in the first group of channels and the second group of channels. The heat conduction medium flows in the first group of channels in a direction opposite from the flow of the heat conduction medium in the second group of channels.

The present disclosure relates to a thermal dissipation system of an electric vehicle that includes: a heat exchanger arranged at the front part of the electric vehicle for providing heating or cooling to an air conditioning system of the electric vehicle; a first heat sink and a second heat sink, which are respectively arranged at the two sides of the front part of the heat exchanger; a number of rotatable and adjustable air deflectors for changing the flow direction of the air flowing through the heat dissipation system. Temperature sensors are included within the thermal dissipation system for sensing the working temperatures and the environmental temperatures of a battery pack and a motor of the electric vehicle. Opening and closing states of the air deflectors are adjusted in accordance with data provided by the temperature sensors.

Assemblies comprising first and second assembly members attached to one another via a connection arrangement and methods for forming such assemblies.

Assemblies comprising first and second assembly members attached to one another via a connection arrangement and methods for forming such assemblies.

Provided is a joint structure which is capable of easily preventing relative positional shifting between two members joined by a screw member, and which has favorable workability. The joint structure joins a first member that is provided with a screw hole in which female screw threading is formed and a second member that can be stacked on the first member, by insertion from the second member side of a screw member that has formed thereon male screw threading which screws into the female screw threading. The joint structure is provided with a protruding part that is provided to the first member and that has formed therein a first through hole that guides the screw member into the screw hole. The second member has a width that is smaller than the width of the protruding part, and has formed therein a second through hole which guides the screw member into the screw hole via the first through hole, and a recessed part which accommodates the protruding part.

An assembly component is provided that includes a body and a multi-step doghouse. The multi-step doghouse is carried on the body and includes a keyhole opening having multiple pin retaining positions.

An assembly component is provided that includes a body and a multi-step doghouse. The multi-step doghouse is carried on the body and includes a keyhole opening having multiple pin retaining positions.

The invention relates to detachable connections for pieces, mainly rigid ones, and can be used, in particular, for connecting elements of building constructions, for example, transparent domes, equipment frame bodies, furniture and toy elements etc. In the joint for connecting pieces having a curved surface, which comprises projections arranged on mated sides of the pieces, said projections having bulbous widenings at their ends and necks at their bases, and complementary grooves in the form of bulbous cavities that correspond to the bulbous widenings of the projections and change into narrow channels that match the necks of the projections, and wherein the surfaces of the ends of the projections and the surfaces of the bottom of the grooves mated thereto have conical shape, and the tips of the surfaces of the ends of projections and the bottom of the cavities are arranged on opposite sides relative to the connected pieces, the side surfaces of the projections and the side surfaces of the grooves mated thereto are formed by moving a straight line along the guide path, which is the intersection line of the spherical surface with the cylindric surface formed by moving a straight line along an S-shaped guide path, and wherein the side surfaces of the projections and the side surfaces of the grooves are smoothly mated with the surfaces of the ends of projections and the surfaces of the bottom of the grooves, respectively. A joint for connecting pieces delimited by curved surfaces is created.

A misting device has a form factor that allows the device to be handheld. The device includes a fluid tank that can be pressurized to force the contained fluid under pressure through a fluid delivery system. A hand-operated pump injects air into the fluid tank to pressurize the fluid tank. The pump includes a pump handle located at the bottom of the tank at one end of a rod, and a piston at the other end of the rod. A pressure-relieving air channel extends through the piston, the rod, and the pump handle to emit air out of the pump and into the environment when the fluid tank is at a maximum pressure. A pressure relief valve is disposed inside the piston to control the flow of air through the air channel. The pump handle locks against the tank using a twist-and-lock mechanism to remain secured in a retracted position.