An ultracapacitor that comprises a first and second electrochemical cell that are connected in parallel is provided. The cells are define by a first electrode that contains a current collector having opposing sides coated with a carbonaceous material, a second electrode that contains a current collector having opposing sides coated with a carbonaceous material, and a separator positioned between the first electrode and the second electrode. The second cell is by the second electrode, a third electrode that contains a current collector having opposing sides coated with a carbonaceous material, and a separator positioned between the second electrode and the third electrode. The ultracapacitor also contains a nonaqueous electrolyte that is in ionic contact with the electrodes and contains a nonaqueous solvent and an ionic liquid. A package encloses the first cell, the second cell, and the nonaqueous electrolyte.

Embodiments of the present disclosure include an apparatus for enclosing energy storage devices. An apparatus according to the present disclosure can include: an elongated sleeve having a contoured interior configured to enclose each of a plurality of energy storage devices, wherein the elongated sleeve is composed at least partially of a thermally conductive material; and at least one slot disposed on an exterior surface of the elongated sleeve, wherein the at least one slot is configured to receive for mechanically coupling a mounting rail to the elongated sleeve.

A battery protection circuit has two input nodes and two output nodes. The input nodes are connected to a positive supply line and a negative or ground line respectively, and the two output nodes are connected to a positive side of a load and a negative or ground return side of the load. The circuit includes a solid state switch which is oriented such that when the switch is open current cannot flow from the battery through the load. At least one capacitor is connected in series with a diode between the two input nodes of the circuit to smooth out any negative transient voltages present at the positive input node of the circuit. The capacitor includes a polarized capacitor and the diode is oriented to protect the capacitor during normal use when a positive voltage is present at the input node that is connected to the positive supply line.

A capacitor unit includes a casing, a heat sink, a heat radiation sheet, and a notch. The casing accommodates the capacitors. The casing includes a positive electrode terminal block and a negative electrode terminal block. The heat sink is provided on the casing in a stacking direction. The heat radiation sheet is made of insulation material and is sandwiched in the stacking direction between the casing and the heat sink to cover the positive electrode terminal block and the negative electrode terminal block. The notch is provided in at least one of the casing and the heat radiation sheet between the negative electrode terminal block and the positive electrode terminal block. The notch passes through the at least one of the casing and the heat radiation sheet along a plain substantially perpendicular to the stacking direction to separate the negative electrode terminal block and the positive electrode terminal block.

A heating circuit for an energy storage device having a core with an electrolyte, the energy storage device having inputs, characteristics of a capacitance across the electrolyte and the core, and internal surface capacitance between the inputs which can store electric field energy between internal electrodes of the energy storage device that are coupled to the inputs, the battery heating circuit including: a controller configured to switch between a positive input voltage and a negative input voltage provided to one of the inputs at a frequency sufficient to effectively short the internal surface capacitance of the energy storage device to generate heat and raise a temperature of the electrolyte, the controller being further configured to discontinue the switching when the temperature of the electrolyte and/or the energy storage device is above a predetermined temperature that is considered sufficient to increase a charging efficiency of the energy storage device.

The object of the invention is an electrical assembly, in particular a capacitive block, comprising a capacitive element, at least one electric connector secured to said capacitive element and a casing having a bottom, a side wall and an aperture through which the capacitive element is inserted, said casing comprising at least one shoulder on the side of the aperture, said shoulder forming a stop configured to receive in abutment said at least one electric connector, so as to support said capacitive element.

A solid electrolytic capacitor containing a capacitor element is provided. The capacitor element contains a sintered porous anode body, a dielectric that overlies the anode body, a solid electrolyte that overlies the dielectric, wherein the solid electrolyte includes a conductive polymer layer, and a moisture barrier that overlies the conductive polymer layer.

An electrolytic capacitor module includes a plurality of capacitor elements, an electrode lead, a sealing member, and a heat dissipation member. The electrode lead is electrically connected to each of the plurality of capacitor elements, and penetrates through the sealing member. The heat dissipation member has a plurality of housing portions that respectively house the plurality of capacitor elements. Further, the heat dissipation member has a first surface and a second surface opposite to the first surface. Each of the plurality of housing portions has an insertion opening opened in the first surface. The sealing member seals the insertion opening. The electrode lead is led out from the insertion opening.

A capacitor with a seat plate includes a capacitor main body and a seat plate that holds the capacitor main body. The capacitor main body includes a capacitor element, a case having an opening for housing the capacitor element, a sealing member that closes the opening of the case, and a plurality of lead terminals each penetrating the sealing member and the seat plate. The seat plate includes a heat dissipation member, and has a first surface and a second surface opposite to the first surface. The heat dissipation member is exposed at the first surface and the second surface. The capacitor element is disposed at a side close to the second surface of the seat plate. The case is in contact with a region of the heat dissipation member. The region of the heat dissipation member is exposed at the second surface.

Provided are an exterior body and an abnormality detector capable of suppressing bulking even when a heat generation detection function is provided. The exterior body of an electronic device generates heat during operation and is characterized by being provided with a magnetic body that is at least a portion of the exterior body, that has spontaneous magnetization, and that generates an electromotive force by exhibiting an abnormal Nernst effect through heat generation of the electronic device, wherein an electrode for extracting power is provided to the magnetic body.