5results about How to "High voltage output" patented technology

The invention provides an automatic switching lithium battery circuit capable of charging in parallel and discharging in series, n lithium batteries B1-Bn are connected in series and then are connected with a load, and a switch Si is connected between every two lithium batteries; the charging power supply DC is connected in parallel with n charging protection circuits; each charging protection circuit is connected in parallel with a lithium battery; when the lithium batteries are charged in an equalizing manner, all the switches Si are switched off, the lithium batteries are connected in parallel, the charging power supply DC charges the lithium batteries through the charging protection circuit, and the lithium batteries are switched off from a charging loop through the charging protection circuit when being fully charged; when the lithium batteries supply power to the load, all the switches Si are closed, and the lithium batteries are connected in series to supply power to the load. By using the method, the defects that an existing active method relates to a complicated circuit and is long in equalization time, a resistor in a passive method can cause energy waste and increase battery heat, the method cannot be applied to long-term reliable operation of the lithium battery, and the control is simple can be overcome.

This invention discloses a zinc anode, its preparation method, and a battery, belonging to the field of electrochemical technology. It solves the problem of reduced coulombic efficiency and reduced cycle life in existing batteries using zinc-based metal anodes. A zinc anode includes a zinc substrate and a composite modification layer coated on the surface of the zinc substrate; the composite modification layer is formed by combining polystyrene microspheres and an ionic liquid, and the thickness of the composite modification layer is 5-30 μm. The composite modification layer on the zinc anode of this invention does not significantly hinder Zn²⁺ deposition. + The transmission of electrons can maintain the electron conversion reaction in the strong acid electrolyte, enabling the battery system to achieve excellent cycle stability while maintaining high voltage output. The acidic aqueous zinc-manganese full cell constructed with zinc anode prepared using this composite modification layer still maintains stable rate performance at high current density.

The utility model relates to the technical field of batteries, and discloses a battery monomer and electric equipment, the battery monomer comprises a battery cell, the battery cell comprises a first pole piece, a second pole piece and an isolating layer arranged between the first pole piece and the second pole piece; the first pole piece comprises a first current collector, and a first positive electrode region and a first negative electrode region which are arranged on at least the same side surface of the first current collector, and a first spacer region is arranged between the first positive electrode region and the first negative electrode region; the second pole piece comprises a second current collector, and a second positive electrode region and a second negative electrode region which are arranged on at least the same side surface of the second current collector, and a second spacer region is arranged between the second positive electrode region and the second negative electrode region; the first positive electrode region and the second negative electrode region are oppositely arranged, the first negative electrode region and the second positive electrode region are oppositely arranged, and the first spacer region and the second spacer region are oppositely arranged. The positive electrode regions and the negative electrode regions of the pole piece alternately form a plurality of repetitive units, so that the positive electrode regions and the negative electrode regions of adjacent layers are conductively communicated to form an inner series loop, and the pole piece is suitable for large-scale industrial production.

The invention discloses an asymmetric structural color generator device and a preparation method and application thereof. The asymmetric structural color generator device comprises a hygroscopic xerogel layer and an asymmetric structural color layer attached to the hygroscopic xerogel layer. The asymmetric structure color layer comprises a black conductive substance active layer and a colored structure color layer partially covering the surface of the black conductive substance active layer; the hygroscopic xerogel layer is attached to the black conductive substance active layer; the asymmetric structure color generator device prepared by the invention has the advantages of high spontaneous moisture absorption cyclic power generation mode, low environmental limitation, high toughness, high response speed, high voltage output (up to 0.75 V) and long power generation duration (greater than 100 hours).

An electrochemical device comprises a bipolar current collector, the bipolar current collector is connected with an outer package in a sealed mode, independent cavities are formed in the two sides of the bipolar current collector respectively, each cavity comprises an electrode assembly and electrolyte, and at least one surface of the bipolar current collector comprises electrode active materials. The adjacent electrode assemblies are connected in series. According to the electrochemical device, the safety of the electrochemical device can be improved; and the electrode active material on the surface of the bipolar current collector also participates in the reaction process in the electrochemical device, so that the electrochemical device realizes high-voltage output and has relatively high energy density.