An ultracapacitor that includes an energy storage cell immersed in an electrolyte and disposed within an hermetically sealed housing, the cell electrically coupled to a positive contact and a negative contact, wherein the ultracapacitor has a gel or polymer based electrolyte and is configured to output electrical energy at temperatures between about −40° C. and about 250° C. Methods of fabrication and use are provided.

An ultracapacitor that includes an energy storage cell immersed in an electrolyte and disposed within an hermetically sealed housing, the cell electrically coupled to a positive contact and a negative contact, wherein the ultracapacitor has a gel or polymer based electrolyte and is configured to output electrical energy at temperatures between about −40° C. and about 250° C. Methods of fabrication and use are provided.

Disclosed is an electrochemical energy storage device, belonging to the technical field of electrochemical energy storage devices. The electrochemical energy storage device comprises: a cover plate (6), which comprises a lead-out column (61) and a fixation plate (62), wherein the lead-out column (61) is an electric conductor, the fixation plate (62) is an insulator, and the lead-out column (61) is fixed on the fixation plate (62) in a vertically penetrating manner; an outer housing (1), which is cylindrical, wherein an opening is provided at at least one end of the outer housing, and the fixation plate (62) is connected to the opening of the outer housing (1) in a sealed manner by means of a sealing ring (9); and a roll core (3), which is arranged at an inner cavity of the outer housing (1), wherein the roll core (3) is welded to a side face of the lead-out column (61) by means of an upper connection piece (4) to achieve electrically conductive connection, and connected in an electrically conductive manner to the other lead-out end of the outer housing (1) by means of a lower connection piece (2); and an upper roll edge (42) used for sheathing the roll core (3) is arranged at a periphery of the upper connection piece (4), and a periphery of the lead-out column (61) and the upper roll edge (42) of the upper connection piece (4) are fixed by means of side-face laser welding. The electrochemical energy storage device has the advantages that the internal resistance is small, the strength is high, the stability is good, and anti-vibration performance can be improved in the process of use.

Disclosed is an electrochemical energy storage device, belonging to the technical field of electrochemical energy storage devices. The electrochemical energy storage device comprises: a cover plate (6), which comprises a lead-out column (61) and a fixation plate (62), wherein the lead-out column (61) is an electric conductor, the fixation plate (62) is an insulator, and the lead-out column (61) is fixed on the fixation plate (62) in a vertically penetrating manner; an outer housing (1), which is cylindrical, wherein an opening is provided at at least one end of the outer housing, and the fixation plate (62) is connected to the opening of the outer housing (1) in a sealed manner by means of a sealing ring (9); and a roll core (3), which is arranged at an inner cavity of the outer housing (1), wherein the roll core (3) is welded to a side face of the lead-out column (61) by means of an upper connection piece (4) to achieve electrically conductive connection, and connected in an electrically conductive manner to the other lead-out end of the outer housing (1) by means of a lower connection piece (2); and an upper roll edge (42) used for sheathing the roll core (3) is arranged at a periphery of the upper connection piece (4), and a periphery of the lead-out column (61) and the upper roll edge (42) of the upper connection piece (4) are fixed by means of side-face laser welding. The electrochemical energy storage device has the advantages that the internal resistance is small, the strength is high, the stability is good, and anti-vibration performance can be improved in the process of use.

An adhesive film for a metal terminal being interposed between a metal terminal electrically connected to an electrode of a power storage device element, and a power storage device external member that seals the power storage device element. The adhesive film is configured from a laminate provided with: a first polyolefin layer disposed on the metal terminal side; a base material; and a second polyolefin layer disposed on the power storage device external member side. Under the following measurement conditions, the restoration rate measured when an indenter is pressed in a vertical direction with respect to a cross section in a thickness direction of the first polyolefin layer is 46.0% or greater. Restoration rate measurement conditions are a load of 10 mN, a load application speed of 1 mN/10 seconds, retention time of 10 seconds, a load releasing speed of 1 mN/10 seconds, and measurement temperature of 25° C.

An electrochemical energy storage device, which relates to the technical field of electrochemical energy storage devices. The device comprises: an upper connecting bar (4), a rubber piece (3) that has an insulating and sealing effect, a housing (7) and a rolled core (5); the housing (7) is cylindrical and is provided with an opening at at least one end, and the rubber piece (3) and the housing (7) are sealedly connected by means of a waisted section (9) provided on the housing (7); the rolled core (5) is provided in an inner cavity of the housing (7); one end of the upper connecting bar (4) penetrates the rubber piece (3) so as to be conductively connected to a negative electrode welding piece (1), while the other end of the upper connecting bar (4) is conductively connected to the rolled core (5); the rolled core (5) is conductively connected to the housing (7) by means of a lower connecting piece (6); and a positive electrode welding piece (8) is conductively connected to the housing (7). The rubber piece (3) features a good insulation effect, a simple structure and low cost. The upper connecting bar (4) and the lower connecting piece (6) are used for welding, and thus internal resistance is low and large current charging and discharging may be achieved.

An electrochemical energy storage device, which relates to the technical field of electrochemical energy storage devices. The device comprises: an upper connecting bar (4), a rubber piece (3) that has an insulating and sealing effect, a housing (7) and a rolled core (5); the housing (7) is cylindrical and is provided with an opening at at least one end, and the rubber piece (3) and the housing (7) are sealedly connected by means of a waisted section (9) provided on the housing (7); the rolled core (5) is provided in an inner cavity of the housing (7); one end of the upper connecting bar (4) penetrates the rubber piece (3) so as to be conductively connected to a negative electrode welding piece (1), while the other end of the upper connecting bar (4) is conductively connected to the rolled core (5); the rolled core (5) is conductively connected to the housing (7) by means of a lower connecting piece (6); and a positive electrode welding piece (8) is conductively connected to the housing (7). The rubber piece (3) features a good insulation effect, a simple structure and low cost. The upper connecting bar (4) and the lower connecting piece (6) are used for welding, and thus internal resistance is low and large current charging and discharging may be achieved.

A nanowire energy storage device such as a nanowire battery or a capacitor having a cathode comprising a plurality of nanowires and an anode comprising a plurality of nanowires interlaced with the plurality of nanowires of the cathode, and embedded in a PMMA gel electrolyte.

A nanowire energy storage device such as a nanowire battery or a capacitor having a cathode comprising a plurality of nanowires and an anode comprising a plurality of nanowires interlaced with the plurality of nanowires of the cathode, and embedded in a PMMA gel electrolyte.

An energy storage device includes an electrode terminal including a plate-like terminal body and a shaft portion connected to the terminal body, and an upper insulating member disposed between the terminal body and the case, the upper insulating member having a through-hole through which the shaft portion penetrates. The upper insulating member has a sidewall portion disposed along an end surface of the terminal body. The sidewall portion is provided with a thin portion at a position on a side of a center point of the shaft portion in a direction orthogonal to an extending direction of the sidewall portion in a plan view.