A boat having an electric motor coupled with an electrical store is disclosed. The electrical store includes a storage element, and positive and negative poles in current-conducting connection with the storage element. An isolating circuit element is operatively connected to a user activatable emergency stop switch. The isolating circuit element is configured to, upon activation of the emergency stop switch, isolate the current-conducting connection between the storage element and at least one of the poles.

A battery module for a system for the storage of electrical energy for an electric drive vehicle. The battery module has: a group of chemical batteries arranged parallel to and beside one another; at least two connection plates which rest against opposite ends of the group of chemical batteries so as to electrically connect the poles of the chemical batteries to one another; two support bodies coupled to opposite ends of the group of chemical batteries so as to provide the chemical batteries with a stable mechanical support; two lids, which are coupled to the support bodies so as to create respective collecting chambers having at least one draining opening; and at least two tie rods, which are arranged on opposite sides of the battery module and tie together the lids and the support bodies in a packed manner.

Described are flame retardant, porous plastic flame arrestors. The flame retardant, porous plastic flame arrestor is formed by irradiating a flame retardant polymer resin to achieve a fractional melt index, grinding the flame retardant polymer resin into a powder, and sintering the flame retardant polymer resin to form a porous structure. Irradiating the flame retardant polymer resin increases the resin's molecular weight and reduces the resin's melt index through crosslinking.

A battery pack includes multiple sub-modules each of which includes multiple battery cells electrically connected to each other, and an exhaust duct that is provided between and integrated with at least the two battery modules facing each other. The exhaust duct includes therein an exhaust passage that communicates with an outer surface of a safety valve provided in each battery cell in each of the facing battery modules.

The present disclosure provides a vent and a cap assembly of a power battery. The vent comprises a vent body and a vent body protective sheath having a wall portion and a hollow portion, the vent body is fixedly connected to a lower portion of the wall portion and sealing the hollow portion from below, an upper portion of the wall portion is fixedly connected to a cap plate for sealing a vent hole. The cap assembly of the power battery comprises a cap plate provided with a vent hole and an electrolyte-injection hole; a first electrode post connected to the cap plate; a second electrode post connected to the cap plate; and a vent fixedly provided to the vent hole; wherein the vent is the above vent.

A battery housing has a body and a lid mateable with the body. The body and the lid, when mated, provide a chamber dimensioned to hold at least one battery; and a venting passageway from the chamber. At least a portion of at least one of the body and the lid comprises an intumescent flame retardant material with an expansion ratio sufficient to drive gas from the chamber through the venting passageway and to seal the chamber when the material intumesces in the event of thermal runaway of a battery housed in the chamber.

A battery assembly according to an exemplary aspect of the present disclosure includes, among other things, a battery array and a foam shell that surrounds the battery array.

A connecting pole for a rechargeable battery is disclosed. The connecting pole (1) has a connecting section (2) in which a pole terminal can be attached to the connecting pole (1). The connecting pole (1) has an attachment section (3) in which the connecting pole (1) can be attached in a housing part (5) of the battery. The attachment section (3) has a labyrinth section (4). The outer wall (6) of the connecting pole (1) has at least one circumferential projection (7, 8) in the labyrinth section (4). The circumference of outer wall (6) of the connecting pole (1) increases in the direction pointing away from the connecting section (2) in a section of the labyrinth section (4) which is not provided with a circumferential projection (7, 8). Also disclosed is a rechargeable battery housing or a part of said rechargeable battery housing having at least one connecting pole.

A secondary battery typified by a lithium-ion secondary battery includes a battery outer container in which a gas release valve and positive and negative electrode external terminals are provided, an electrode group in which positive and negative plates are stacked with a separator interposed therebetween and current collection portions are provided at both ends, and positive and negative electrode current collectors forming a current path from the current collection portions of the electrode group to the positive and negative electrode external terminals, and the cross-sectional area of a gas exhaust flow channel through which gas generated inside the electrode group is discharged from the gas release valve is set so as to increase in a downstream direction.

A secondary battery having no beading portion includes an electrode assembly having a cathode plate and an anode plate arranged with a separator being interposed therebetween, a battery case having an upper can configured to accommodate the electrode assembly and an electrolytic solution in an inner space thereof and have an open top and an open bottom, the top of the upper can being bent inwards, and a lower sealing member coupled to the bottom of the upper can to seal the bottom of the upper can, and a cap assembly having a top cap protruding on an uppermost portion thereof to form a cathode terminal, a safety vent located below the top cap and configured to change a shape when an inner pressure of the battery case increases, and a gasket surrounding rims of the top cap and the safety vent.