8results about How to "Reduce voltage drop" patented technology

In order to solve the deficiency of 1,3-propanesultone as an additive, the application provides a lithium battery electrolyte and a lithium battery. The electrolyte comprises an organic solvent, a lithium salt and an additive, and the additive comprises a thiophene compound as shown in general formula (I), wherein R1 is a non-hydrogen group, R2-R3 are H or an organic group, and at least one of R1-R3 is a halogen-substituted or unsubstituted pinacol borate group. The thiophene compound in the electrolyte of the application can replace 1,3-propanesultone, and can participate in the film formation of the positive and negative electrodes, improve the electrode kinetic and thermodynamic properties, reduce the impedance of the interface film, reduce the gas production during battery formation and storage, improve the voltage drop of the battery during full charge storage, and improve the stability of the electrolyte.

The embodiment of the present application provides a kind of line voltage regulating equipment.The equipment includes: control device, and multiple voltage regulating devices and multiple monitoring devices arranged in different line sections of distribution line;Specifically, each monitoring device is used to collect the real-time line data of the line section, and is sent to control device;Control device includes data analysis module, adjustment instruction generation module and first communication module;Each voltage regulating device is used to adjust the line parameter of the line section according to the received adjustment instruction, to realize the voltage optimization of line section.Through this line voltage regulating equipment, the voltage stability of each section of line can be realized, while local adjustment and network optimization are considered, and the flexibility and reliability of distribution network are improved.

The invention relates to the technical field of motors and control, in particular to a stator power supply method of a long stator linear motor, which effectively reduces partial voltage of winding leakage reactance by subdividing a segmented winding into a winding branch A and a winding branch B and combining'pre-switching-on 'and'delayed switching-off' of uncovered segments of a vehicle. In addition, through star-shaped connection of center end points of winding branches A and B and adoption of a double-path power supply for power supply, at least two adjacent branches are ensured to be supplied with power at any time. The output transformer is arranged for the single frequency converter, the two secondary sides of the transformer share the same primary side excitation transformer, and dynamic load balancing is achieved. For doubly-fed linear motor control, a power supply adopts a variable control mode. According to the method, under the technical condition that the step changing control frequency and the power supply interval are kept basically unchanged, under the set winding voltage withstanding level, stator power supply section division is more effectively regulated and controlled, higher rotor counter electromotive force can be overcome for operation, and then the maximum operation speed of a vehicle is increased.

The utility model provides an aluminum electrolysis cell steel-copper-aluminum composite cathode conductive structure which comprises a cathode carbon block, a cathode steel conductive piece, a carbon steel connecting piece and a cathode copper conductive piece, a first mounting groove is formed in the cathode carbon block, and the cathode steel conductive piece is arranged in the first mounting groove and electrically connected with the cathode carbon block through the carbon steel connecting piece; a second mounting groove is formed in the cathode steel conductive piece, the cathode copper conductive piece is arranged in the second mounting groove and is electrically connected with the cathode steel conductive piece, the copper-aluminum connecting piece comprises a copper part and an aluminum part which are compounded together, the copper part is electrically connected with the copper-aluminum connecting piece, and the aluminum part is used for being electrically connected with a cathode aluminum bus. When the steel-copper-aluminum composite cathode conductive structure of the aluminum electrolysis cell is used, compared with the prior art, the voltage drop generated when current passes through a copper-steel interface, the cathode conductive steel bar and the steel-aluminum explosion block is omitted, so that the voltage drop of the cathode conductive structure is greatly reduced, and invalid energy consumption is reduced.

The application relates to the technical field of voltage compensation control, in particular to a power distribution line dynamic compensation adjustment method for preventing voltage fluctuation. The method comprises the following steps: acquiring voltage deviation degrees and reactive power variation synchronization degrees between each trunk node and each compensation point at each moment; acquiring limit coefficients of each trunk node, and dividing an alternating current power grid area into reactive power compensation coverage sub-areas dominated by each compensation point; calculating line losses of trunk lines in each reactive power compensation coverage sub-area, and acquiring multi-time scale estimation information; acquiring compensation parameters of reactive power compensation devices in each reactive power compensation coverage sub-area, and then correcting compensation capacities of the reactive power compensation devices to dynamically compensate the power distribution line. The application aims to reduce active power loss and voltage drop and improve overall power quality.

This application discloses a driving substrate and a display panel. In this embodiment, the output electrode is used to electrically connect to a light-emitting device. The active layer includes a semiconductor portion, a first conductive portion, and a second conductive portion. The first conductive portion is connected to the side of the semiconductor portion near the output electrode, and the second conductive portion is connected to the side of the semiconductor portion away from the output electrode. The first conductive portion is connected to the output electrode, and the surface resistivity of the first conductive portion is less than that of the second conductive portion. A gate is disposed overlapping the semiconductor portion. An input electrode is connected to the second conductive portion. The input electrode, output electrode, active layer, and gate are used to form a thin-film transistor. In this application embodiment, because the surface resistivity of the first conductive portion is less than that of the second conductive portion, the voltage drop of the active layer near the output electrode is reduced, thereby reducing the influence of hot carriers on the threshold voltage.

The invention discloses an electrolyte purity maintaining assembly applied to a stainless steel cold acid line, purifying equipment and a using method of the purifying equipment, and aims to solve the problem of high power consumption caused by electrolyte impurity accumulation and circulation dead angles. The device comprises an electrolyte purity maintaining assembly and an electrolyte purifying device. The maintaining assembly comprises a storage tank and a circulating structure arranged in the storage tank; the circulating structure is composed of a liquid outlet cylinder, an impeller, a connecting pipe I and a connecting pipe II, the connecting pipe I and the connecting pipe II are distributed up and down, the impeller is driven by a magnetic coupling driving mechanism to rotate, and tank bottom fluid dead corners and electrolytic mud deposition are eliminated through negative pressure suction. According to the purification equipment, a driving motor is matched with an inner / outer gear ring and a gear set to drive an annular liquid pipe to perform circumferential rotation and axial lifting; the fluid boundary layer on the surface of the filter screen is destroyed by utilizing mechanical micro-amplitude vibration generated by a hemispherical block matching structure and a pulse generation structure formed by a closed ring and a communicating pipe so as to peel off viscous impurities.

This application relates to an electrochemical device and an electronic device. Specifically, this application provides an electrochemical device comprising a negative electrode and an electrolyte. The negative electrode comprises: a negative electrode current collector; a base coating comprising a volume-expanding resin and formed on at least one surface of the negative electrode current collector; and a negative electrode active material layer comprising a negative electrode active material and formed on the base coating; and the electrolyte comprising propyl propionate. This design not only significantly improves the safety performance of the electrochemical device under thermal runaway but also effectively reduces its voltage drop during low-temperature storage.