33results about How to "Increase the number of series" patented technology

The invention mainly relates to a photovoltaic power optimization system, which comprises a plurality of photovoltaic assemblies which are connected in series, wherein each photovoltaic assembly is provided with a carrier transmission module which is used for forming a communication carrier on a transmission line of connecting the photovoltaic assemblies in series; each photovoltaic assembly is provided with a carrier sensing module which is used for extracting a communication carrier on the transmission line; and at least one part of photovoltaic assemblies are provided with a wireless communication module, so that at least one part of photovoltaic assemblies receive or transmit first data which are reflected in a wireless communication form through the arranged wireless communication module, and/or the photovoltaic assemblies receive second data which are reflected in a communication carrier form on the transmission line through the arranged carrier sensing module.

The invention discloses a semiconductor opening switch (SOS)-based ultra-wide spectrum pulse generator with 100 kHz pulse frequency, and belongs to the technical field of pulse power. The pulse generator comprises a charging power supply, a primary low-voltage quick pulse generation unit, a magnetic saturation linear transformer, a pumping capacitor, an SOS and a load in sequence. A plurality of primary low-voltage quick pulse generation units are uniformly arranged at the periphery of each single module and thus the primary current output capacity is increased. A trigger controls the on and off of a metal oxide semiconductor field effect transistor (MOSFET) to generate scores of ns to hundreds of ns pulse with a repeated frequency of 100kHz. The magnetic saturation linear transformer is formed by connecting a plurality of single modules in series. On one hand, the output voltage can be increased by increasing the series number of the single module; on the other hand, after the transformer core is saturated, the secondary side is a coaxial squirrel cage structure, the inductance of a reversed pump is reduced, the time of a reversed current pump can be shortened, an SOS quickly cuts off current, and a high-voltage ultra-wide spectrum pulse is generated in the load. A mismatching charging mode from a primary energy storage large capacitance to a secondary pump small capacitance is used to obtain a high voltage on a pumping capacitor; and on the other hand, under the same target voltage, the series number of the single module is reduced, the inductance of the reversed pump is reduced, and 100kHz ultra-wide spectrum pulse generation is promoted.

The invention mainly relates to a power optimizer. The power optimizer is used for performing voltage conversion on a one-stage or multi-stage photovoltaic cell string, and includes one-stage or multi-stage BUCK circuits, wherein first and second input ends of any one stage of BUCK circuit are respectively coupled with an anode end and a cathode end of the corresponding one-stage photovoltaic cell string; and an output capacitor of any one stage of BUCK circuit is connected between a first output node and a second output node of the any one stage of BUCK circuit, so that the output voltage of the single-stage photovoltaic cell string is provided between a first output node and a second output node of a single-stage BUCK circuit, or the total output voltage for the multi-stage photovoltaic cell string is formed between the first output node of the first first-stage BUCK circuit and the second output node of the last last-stage BUCK circuit in the multi-stage BUCK circuits.

The invention mainly relates to a data communication method of a photovoltaic power optimization system. The photovoltaic power optimization system comprises a plurality of photovoltaic assemblies connected in series, wherein each photovoltaic assembly is provided with a carrier transmission module for forming a communication carrier on a transmission line of connecting the photovoltaic assembly in series; each photovoltaic assembly is provided with a carrier sensing module for extracting the communication carrier on the transmission line; and at least one part of photovoltaic assemblies are provided with wireless communication modules, so that the at least one part of photovoltaic assemblies receive or transmit first data reflected in a wireless communication form through the arranged wireless communication modules, and/or the photovoltaic assemblies receive second data reflected in a communication carrier form through the arranged carrier sensing modules.

The invention discloses a method for preparing cyclohexanol and cyclohexanone based on a multi-layer annular flow guide cylinder bubbling reactor. The method comprises the following steps: in a multi-layer annular flow guide cylinder bubbling reactor, oxidizing cyclohexane with an oxygen-containing gas to generate a cyclohexyl hydroperoxide-containing oxidation liquid, extracting an oxidation liquid with a strong base solution so as to obtain a cyclohexyl hydroperoxide-containing alkali water phase and a cyclohexane organic phase, performing a decomposition reaction on the cyclohexyl hydroperoxide-containing alkali water phase in the presence of a high-melting point solvent, performing sedimentation separation on a decomposition liquid, distilling the cyclohexane organic phase so as to obtain a mixture of cyclohexanol and cyclohexanone, and feeding back the extracted cyclohexane solution to the cyclohexane oxidation reaction process. By adopting the method, the oxidation selectivity and the reaction efficiency of the cyclohexane can be greatly improved, and the cyclohexane distillation energy consumption can be reduced.

The invention relates to a laser cutting method. The method comprises the following steps: (a) bearing a substrate by using a platform, wherein the substrate is provided with at least one first cutting straight line; (b) capturing two reference points on the first cutting straight line by utilizing a slope arithmetic device, and calculating the slope of the first cutting straight line relative to the laser traveling shaft of a laser device by using the two reference points; (c) and cutting at least one second cutting straight line on the substrate by using the laser device according to the slope of the first cutting line relative to the laser traveling shaft, wherein the second cutting straight line and the first cutting straight line are at a preset interval. With the method, the process of previously making marks on the substrate can be avoided, thereby enhancing the productive capacity and reducing the cost and the expenditures.

The invention provides an assembly voltage limiting method and an application device and system thereof. When a voltage limiting enabling instruction is received, at least one photovoltaic cell in a photovoltaic cell string is controlled to work in a voltage limiting mode, so that the voltage of the photovoltaic cell string is reduced, the number of photovoltaic modules connected in series can beincreased while the highest voltage of the system does not exceed corresponding requirements, and the system cost is reduced; and when a voltage limiting release instruction is received, the photovoltaic cells working in the voltage limiting mode are controlled to recover normal output, and the output voltage of the photovoltaic cell string is improved, so that the direct current voltage utilization rate and the DC/AC capacity ratio of the photovoltaic system are further improved.

The invention provides a solid-state battery cell and a preparation method thereof and an energy storage device. The solid-state battery cell comprises at least two solid-state battery units, and each solid-state battery unit comprises a positive electrode, a negative electrode and a solid-state electrolyte membrane located between the positive electrode and the negative electrode; a first current collector is arranged between every two adjacent solid-state battery units, one side of the first current collector is connected with a positive electrode in the solid-state battery unit, the other side of the first current collector is connected with a negative electrode in the solid-state battery unit, and a second current collector is arranged on the outermost side of the solid-state battery unit. The solid-state battery cell prepared by the invention has the advantages of high voltage, small internal resistance, high capacity, high capacity retention ratio, high energy density, large overcurrent area, high integration efficiency and the like.

The invention relates to the technical field of water pumps, in particular to an efficient submersible pump. The efficient submersible pump comprises a first parent, second parents, daughters, an endcover, a motor, a motor sealing box and a controller; the motor is used for providing power to the first parent; the first parent is used for transferring power of the motor to two daughters connectedwith the first parent and the second parents; one ends of the second parents are connected with the first parent, and the other ends of the second parents are connected with the end cover; two sidesof the second parents are connected with the daughters; two adjacent second parents are serially connected through clamping groove structures and couplings; at least two second parents are provided; the daughters are used for absorbing external water into the first parent and the second parents; and a water outlet pipe is arranged on the first parent. The serial connecting number of the second parents can be increased through a clamping mode to increase the length of the submersible pump, so that the use environment of synchronously pumping water in multiple pits of a pond is met, and the pumped water quantity can be increased.

The invention discloses an electronic switch switching circuit for active equalization of a battery management system. The electronic switch switching circuit comprises n batteries, n+1 battery switching circuits, a switching circuit, a charging and discharging module and a control module, wherein a negative electrode of the nth battery is connected with one end of the nth battery switching circuit, a positive electrode of the nth battery is connected with one end of the (n+1) th battery switching circuit, the other end of the (n+1) th battery switching circuit is connected with a first inputend of the switching circuit, the other end of the nth battery switching circuit is connected with a second input end of the switching circuit, a first output end of the switching circuit is connectedwith the charging and discharging module, and a second output end of the switching circuit is connected with the charging and discharging module; and the n+1 battery switching circuits and the switching circuit are respectively connected with the control module. The electronic switch switching circuit adopts a universal field effect transistor as a battery change-over switch to replace a relay and a solid-state relay in the prior art, so that the service life, the reliability and the cost performance are remarkably improved.

The invention mainly relates to an inverter, comprising an energy storage capacitor and a first circuit break module and a second circuit break module; the first circuit break module is connected between a first input node of the inverter and a first end of the energy storage capacitor; the second circuit break module is connected between a second input node of the inverter and a second end of the capacitor; and the switching on and off of the first circuit break module and the second circuit break module are controlled by a second controller of the inverter; the inverter also comprises a command unit used for transmitting communication carrier waves on a transmission line connected to the first input node of the inverter and/or on the transmission line connected to the second input node of the inverter in order to realize that the inverter transmits command information to the outside.