A battery pack includes a tray, an array frame positioned relative to the tray and that houses at least one battery cell, and a retention clip mounted to the tray and engageable with a portion of the array frame. The portion or the retention clip is flexible and the other of the portion and the retention clip is rigid.

The invention relates to a battery retaining device, comprising a guide device which is designed to receive a vehicle battery; at least one retaining element which is designed to rigidly retain a vehicle battery received in the guide device in a mechanical manner up to a first maximum retaining force value in a first operating state and to rigidly retain the vehicle battery received in the guide device in a mechanical manner up to a second maximum retaining force value in a second operating state; and an actuator system with at least one actuator which is designed to bring the at least one retaining element from the first operating state to the second operating state.

According to one embodiment, there is provided an active material. The active material includes a titanium-containing oxide. The titanium-containing oxide is represented by a general formula of Li.sub.(2+w)Na.sub.(2x)M1.sub.(x/2)Ti.sub.(6y)M2.sub.zO.sub.14. In the general formula, the subscripts w, x, y and z are within ranges of 0w6, 0<x<2, 0y3, and 0z3, respectively. M1 is at least one metallic element selected from the group consisting of Sr, Ba, and Pb. M2 is at least one element selected from the group consisting of metallic elements M (excluding Ti and M1) and P.

A cell module includes: a cylindrical cell; a fixing member having a through-hole in which one end of the cylindrical cell is held; and a solidified adhesive bonding together the cylindrical cell and the fixing member. The through-hole has an outer part and an inner part. A shape of the outer part is partially enlarged compared with a shape of the inner part so as to form a liquid pocket, and matches the shape of the inner part on the side opposite from the liquid pocket. Relative to the fixing member, the cylindrical cell is held in an inclined state, such that another end of the cylindrical cell is located closer to the liquid pocket side than the one end of the cylindrical cell is.

The fuel cell vehicle includes a fuel cell placed in a front room, an air compressor placed below the fuel cell in the front room to supply the fuel cell with cathode gas, and a refrigerant supply pump placed below the fuel cell in the front room to supply the fuel cell with a refrigerant. The refrigerant supply pump is placed forward of the air compressor.

A pouch type secondary battery and a method of manufacturing the same are disclosed. The pouch type secondary battery includes a pouch type case formed by attaching an upper sheet and a lower sheet, and an electrode assembly received in the pouch type case. A polymer coating layer for improving sealability is further included at an outer side portion of the pouch type case, in which the upper sheet and the lower sheet are attached.

Disclosed is a battery pack which has a simple structure, small volume and weight, and efficient cooling performance. The battery pack includes a module assembly including a plurality of secondary batteries, and a plurality of cartridges configured to be stacked with each other and surround an outer circumference of the secondary batteries at an outer side, the plurality of cartridges being at least partially made of thermally-conductive material; and a pack case having an empty space therein to accommodate the module assembly and at least partially made of thermally-conductive material to discharge heat of the module assembly.

The present disclosure provides a secondary battery, which comprises a cap plate, at least two cells and two connecting pieces. The cap plate is provided with two electrode terminals which are opposite in electrical polarity. Each cell has two tabs which are opposite in electrical polarity. Each connecting piece has: an electrode terminal electrical connecting portion for electrically connecting with the corresponding electrode terminal of the cap plate; a plurality of tab electrical connecting portions for electrically connecting with the corresponding tabs of the cells respectively; and a plurality of fusing portions electrically connecting the corresponding tab electrical connecting portion to the electrode terminal electrical connecting portion, a width of each fusing portion is less than a width of the electrode terminal electrical connecting portion. A configuration of the connecting piece is simple, thereby reducing the cumulative heat of the secondary battery and reducing the temperature rise.

The present invention discloses an unmanned aerial vehicle and a battery thereof. The battery includes a battery body and a shell disposed on one end of the battery body. The shell has a clamp button disposed on the side opposite the unmanned aerial vehicle. One end of the clamp button is fixed on the shell and the other is used for detachably connecting with the unmanned aerial vehicle. The clamp button makes the battery detachably connect with the main body of the unmanned aerial vehicle be possible and it is very convenient for changing the battery.

A power storage module in which rectangular power storage devices each having an electrode assembly and an electrolyte accommodated in a case are configured to be connected, wherein the power storage devices are arrayed in a predetermined array direction (a direction in which positive electrodes and negative electrodes are stacked) and bonded in an arrayed state, and thicknesses of surfaces (in particular, at least parts in contact with an adjacent member in the surfaces of the bonded sides) on bonded sides of the cases are less than thicknesses of surfaces of non-bonded sides.