15 results about "Double layer capacitor" patented technology

A power supply device includes storage circuit including first node connected to power supply, second node grounded, and electrical double-layer capacitor between first and second nodes; discharge circuit to discharge the storage circuit; charge circuit to charge the storage circuit; and power supply controller to measure voltage at first node and control the discharge and charge circuits. The power supply controller performs: measuring the voltage at first node and measuring first capacitance value and first equivalent series resistance value of the electrical double-layer capacitor upon the discharge circuit discharging the storage circuit; measuring the voltage at first node and measuring second capacitance value and second equivalent series resistance value of the electrical double-layer capacitor upon the charge circuit charging the storage circuit; computing third capacitance value based on first and second capacitance values; and computing third equivalent series resistance value based on first and second equivalent series resistance values.

An auxiliary power supply device includes a storage circuit having first and second electrical double layer capacitors connected in series between first and second nodes, a first switch element having a first terminal coupled to the first node, and a second terminal, a first discharging resistor provided between the second terminal and a fourth node, a second discharging resistor provided between the fourth node and ground, a second switch element having a third terminal coupled to a third node between the first and second electrical double layer capacitors, and a fourth terminal coupled to the fourth node, and a measurement controller. The measurement controller performs a procedure to compute a capacitance value of the storage circuit as a first process, and a procedure to connect the first switch element and connect the second switch element as a second process.

A power supply device of the present invention includes a storage circuit including electrical double layer capacitor between first node connected to a power supply, which is an in-vehicle battery, and second node grounded; a charge circuit connected to the first node and configured to charge the storage circuit; and a power supply controller configured to measure voltage at the first node and control the charge circuit. The power supply controller performs procedure of causing the charge circuit to charge the storage circuit and computing first capacitance value and first equivalent series resistance value of the electrical double layer capacitor based on voltage measured at the first node, upon determining the voltage at the first node is lower than a threshold voltage value, that is, determining a stop period of a vehicle is longer than a threshold period.

Device (200) for supplying power to a motor vehicle, in particular a car or a motorcycle, with a plurality of electrochemical storage cells (101 to 110) and / or double-layer capacitors, wherein at least one of the electrodes arranged in the storage cells (101 to 110) and / or double-layer capacitors is made of metal or is entirely covered with a metal layer, and the metal electrode or the metal layer, in particular a metal foil, is electrically connected via a connecting element to a terminal (111 to 120, 121 to 130) provided outside the storage cell (101 to 110) or outside the double-layer capacitor, wherein a thermally conductive cooling plate (201, 202) is provided which is in thermal contact with the terminals (111 to 120, 121 to 130) of the storage cells (101 to 110) or double-layer capacitors, and the cooling plate (201,202) dissipates the heat energy supplied by the metal electrodes or the metal layers of the electrodes to the terminal (111 to 120, 121 to 130) via the connection element, , wherein the cooling plate (201, 202) comprises a heat-conducting metal and an electrically insulating, heat-conducting layer (203, 204, 205) is provided between the cooling plate (201, 202) and the terminals (111 to 120, 121 to 130), characterized by the fact that the heat-conducting layer (203, 204, 205) is formed from one or more heat-conducting foils (203, 204, 205) arranged one above the other.

A power supply device includes a storage circuit including first electrical double layer capacitor and second electrical double layer capacitor; first switch element; first discharging resistor; second switch element; second discharging resistor; and a power supply controller. The power supply controller performs procedure of discharging the first electrical double layer capacitor when an absolute value of difference between first capacitance voltage value of the first electrical double layer capacitor and second capacitance voltage value of the second electrical double layer capacitor is higher than a standard voltage value and the first capacitance voltage value is higher than the second capacitance voltage value, and procedure of discharging the second electrical double layer capacitor when the absolute value of the difference between the first and second capacitance voltage values is higher than the standard voltage value and the second capacitance voltage value is higher than the first capacitance voltage value.

The present invention relates to a method for operating an electric vehicle and an electric vehicle, the electric vehicle comprising: a first energy storage device, which is in particular designed as a rechargeable battery device; a second energy storage device, which is in particular designed as a double-layer capacitor device and / or is in particular capable of being charged and discharged faster than the first energy storage device; an energy supply unit, which in particular intermittently provides energy for charging the first energy storage device and / or the second energy storage device; a first electrical consumer, which is connected to the second energy storage device via an intermediate circuit; wherein an intermediate circuit voltage is present in the intermediate circuit; wherein the first energy storage device is connected to the energy supply unit via a bidirectional converter device; wherein the second energy storage device is connected to the energy supply unit; wherein a first power flow occurs from the first energy storage device to the second energy storage device when the intermediate circuit voltage drops below a definable voltage; and wherein a second power flow from the second energy storage device to the first energy storage device is prevented, in particular prevented at all times.

A lithium ion capacitor includes binder free positive and negative electrode active layers. The capacitor exhibits high energy density, power density and cycle life and provides a good compromise in performance between an electric double layer capacitor and a lithium ion battery.

The invention provides a double-layer capacitor and a manufacturing method thereof. The manufacturing method comprises the following steps: providing a substrate; forming a groove in the insulating layer on the second metal wire to expose the second metal wire; a double-layer capacitor is formed on the insulating layer on the periphery of the groove and in the groove, a part of the surfaces of the second electrode and the third electrode are exposed, and the first electrode is electrically connected with the second metal wire; forming a third dielectric layer to cover the double-layer capacitor, and forming a first through hole to expose the second electrode and the third electrode; forming a second through hole in the insulating layer to expose the first metal wire and the third metal wire; and forming a fourth metal wire to connect the first metal wire and the second electrode and a fifth metal wire to connect the third metal wire and the third electrode. In the invention, the three electrodes of the double-layer capacitor are led out downwards by using the first metal wire, the second metal wire and the third metal wire in the substrate, so that the process integration difficulty is reduced, and the capacitance density and the design freedom degree of the double-layer capacitor can be improved.

The present disclosure provides an electric double layer capacitor with an electrolyte layer which suppresses leakage current and has high ion conductivity. The electric double layer capacitor includes a pair of electrode bodies and an electrolyte layer. The electrode bodies have polarizable electrodes. The electrolyte layer includes ionic liquid plastic crystals.

A bicyclic triolborate of the general formulaand its use in an electrolyte composition. The use of a bicyclic triolborate in an electrolyte composition in electrochemical supercapacitors, such as for example in double-layer capacitors in electric motors.

The invention relates to the use of amorphous carbon having a structure of three-dimensionally arranged carbon nanoparticles as agglomerates, produced by a method for the material treatment of carbon-containing raw materials based on carbonization and distillation processes. The carbon is used for medical use, as a heat-resistant and / or fire-resistant and / or radiation-resistant insulating material, as a filter element, as a storage element, or for producing plant products or for planting water-deficient areas. The invention also relates to a storage device (40) as an electrical energy storage device in the form of a double-layer capacitor, having a symmetrical structure, each having a housing (41) and a current collector (42) from outside to inside, and an electrode (43) formed as a carbon layer and a separator (44) with an electrolyte. The carbon layer is formed as agglomerates from amorphous carbon which is produced by a method for material processing of a carbon-containing raw material and has a structure of three-dimensionally arranged carbon nanoparticles.

A lithium ion capacitor includes binder free positive and negative electrode active layers. The capacitor exhibits high energy density, power density and cycle life and provides a good compromise in performance between an electric double layer capacitor and a lithium ion battery.

The present disclosure relates to β-H-free tetraalkylammonium salts of trifluoroborates substituted with electron-withdrawing groups, and to the use thereof in an electrolyte composition. The present disclosure relates in particular to their use in an electrolyte composition in electrochemical supercapacitors and ultracapacitors, for example in double-layer capacitors in electric motors.

The present disclosure relates to bicyclic triol borates and the production and use thereof in an electrolyte composition. The present disclosure relates in particular to the use of zwitterionic bicyclic triol borates in an electrolyte composition in electrochemical supercapacitors and ultracapacitors, for example in double-layer capacitors in electric motors.

The present invention relates to a double layer capacitor balancer for balancing current flowing through a first double layer capacitor and a second double layer capacitor connected in series with each other in sequence between a power line and a common line, which can maximize charging energy efficiency by controlling the same current flowing through both double layer capacitors while allowing deviation within a range in which charging voltages of both double layer capacitors are not problematic. It includes a first resistor, a second resistor, and a third resistor connected in series with each other in sequence between the power line and the common line; a first transistor having a base terminal electrically connected between the first resistor and the second resistor and connected in parallel with the first double layer capacitor; and a second transistor connected in series with the first transistor and having a base terminal electrically connected between the second resistor and the third resistor and connected in parallel with the second double layer capacitor.