15 results about "High current" patented technology

A micro cell fuel cell using a nano porous structure according to a thin film process and an anodizing process as a template for implementing a porous structure of an electrode, its fabrication method, and a micro fuel cell stack using the same are disclosed. The micro-fuel cell includes a solid electrolyte and first and second electrodes separately formed on the electrolyte, wherein at least one of the first and second electrodes is supported by a template having a plurality of nano pores formed by depositing, anodizing and etching a thin film, and is a porous electrode with nano pores formed at positions corresponding to the entirety or a portion of the plurality of nano pores formed on the template. The micro-fuel cell can be fabricated based on the thin film process, and unit cells can be highly integrated to implement a micro-fuel cell system generating a high voltage and a high current.

The invention provides a preparation method of a paper-graphite-CoPd thin film electrode. The preparation method comprises the following steps: (1) uniformly coating ordinary paper with a mixture of graphite and clay; (2) retaining the paper coated with the graphite for 20-30 min under the voltage of 1.0V, activating the coating graphite, and then performing electro-deposition on Co for 120-150 min under the voltage of -0.8V to obtain a paper-graphite-Co thin film electrode; and (3) enabling the paper-graphite-Co thin film electrode to stand in 0.8 mmol/L<-1> of PbC12 solution for 1-3 min to obtain the paper-graphite-CoPd thin film electrode, namely a graphite coated paper loading CoPd catalyst. According to the method, with pencil coated paper, Co is subjected to electro-deposition on the surface of conducting paper coated with graphite, and then partial Co is replaced with Pd to prepare the graphite coated paper loading CoPd catalyst, so that the electroreduction performance of hydrogen peroxide is improved. The preparation method overcomes the defects of high current collector cost, hydrogen peroxide decomposition and the like, and solves the problem that hydrogen peroxide based full cells are bad in cathode activity.

The invention discloses a circuit board for transmitting high current and belongs to the technical field of circuit boards. The circuit board for transmitting high current comprises a circuit board body, wherein one or more first conducting elements and one or more second conducting elements are arranged on the circuit board body; the first conducting elements and the second conducting elements are spaced from one another. The circuit board for transmitting high current is characterized by also comprising a conducting bridge, wherein one end of the conducting bridge is connected with the first conducting elements; the other end of conducting bridge is connected with the second conducting elements; and the first conducting elements and the second conducting elements are embedded on the circuit board body. The circuit board has the advantages that a fixing column and a connecting plate in the prior art are replaced by the conducting bridge, and the two ends of the conducting bridge are respectively connected with the first conducting elements and the second conducting elements, thereby meeting the rapid assembly requirement and improving the production efficiency, and the consumption of auxiliary materials can be saved, which is economic.

A pocket-size digital milliohmmeter comprises a box, a liquid crystal screen, an 'on' switch, an 'off' switch, a gear switch, a 'zeroing' knob, two binding posts, two measuring probes and a circuit. Three built-in 1.5V triple-A batteries are serially connected to form an integral 4.5V power source, working voltage conditions and excellent matching of an analog-to-digital converter, the liquid crystal screen and a high-precision constant-current source are realized by the aid of an electronic timing switch, a mirror negative-voltage generator, a battery voltage monitor, a decimal point converter and two high-current silicon diodes, and electric resistance ranging from 0 to 1.999ohm and electric resistance ranging from 0 to 199.9ohm can be measured by two gears with the resolution ratio of 0.001ohm and 0.1ohm. The pocket-size digital milliohmmeter can be conveniently used in indoor and field places without mains power fields, and brings convenience for detecting electric resistance of motors, transformer windings, wires, cables and printing lines of circuit boards.

A terminal block (10) of a rotating electric machine (1) is provided with: a terminal block main body (13); high-current electrical wire connecting sections (17) for connecting high-current electricalwires (4) of the rotating electric machine (1); a plurality of neutral wire connecting sections (18) for connecting neutral wires (5) of the rotating electric machine (1); and a bus bar (21) that connects the neutral wire connecting sections (18) to each other.

The invention relates to a high-current bypass diode for a concentrating photovoltaic system, and belongs to the technical field of solar power generation. The high-current bypass diode comprises a main body, an anode, a first cathode and a second cathode, wherein the anode and the first and second cathodes are positioned on the same plane of the main body, and are positioned on the two opposite end faces. The bypass diode can resist current of 80 amperes, and can be simultaneously connected in parallel with a plurality of concentrating photovoltaic photoelectric conversion receivers, so that the material cost and the machining cost of a product are reduced; a distance between the anode of the bypass diode and each of the first and second cathodes can be determined in a way that short-circuit between positive and negative electrodes of a circuit board in a welding process can be avoided.

The invention discloses a novel high-performance high-voltage high-current connector, including a plug component, wherein the plug component is connected to a plug-end cable and includes a housing having a 120-degree angle; the housing is provided with a through-hole at the center; two jack components are disposed in the through-hole located at one end of the housing; jacks are disposed at both ends of each jack component; the jacks at both ends of each jack component face respective openings of the through-hole; connection terminals are disposed in the jacks; a wire core on the end portion ofthe plug-end cable is provided with a pin that is inserted into the jack. The plug component of the connector achieves connection through the 120-degree profiled structure, can realize the connectionbetween the plug component and a socket component in the connector at 120 degrees, and can save cables and facilitate cable arrangement and disassembly in a limited space.

The invention discloses a novel aqueous magnesium metal secondary battery and a preparation method thereof. The preparation method comprises the following steps of: selecting a safe and nontoxic magnesium alloy as an anode; selecting a common cathode material with a large-size ion diffusion channel, conductive carbon black and a binder for size mixing to prepare a cathode for the aqueous magnesium metal battery; and dissolving magnesium salt and an additive in an aqueous/organic mixed electrolyte with a certain volume ratio through ultrasonic assistance, and using the electrolyte to assemble the aqueous magnesium metal secondary battery. The assembled aqueous magnesium metal secondary battery can stably circulate for more than 60 times under large current, so that the cycle life of the battery is greatly prolonged, the output voltage is high, the specific capacity is large, and the battery has high output voltage of 1.6 V or above and high reversible specific capacity of 197 mA h g <-1 >. The battery has important potential application value, is low in dependence on use scenes and wide in application range, and has wide application prospects in the fields of power grid energy storage, low-speed electric vehicles, flexible wearable power supply and the like.