15results about How to "Balanced charging" patented technology

The invention provides a southern red soil dry land deacidification soil conditioner and a preparation method thereof, and belongs to the technical field of soil conditioners. The preparation method comprises the following steps: embedding bacillus subtilis, bacillus licheniformis and bacillus amyloliquefaciens to prepare bacterial microspheres, adding the bacterial microspheres into gel formed by carboxymethyl chitosan and silk fibroin peptide to prepare sustained-release bacterial microsphere gel, uniformly mixing the sustained-release bacterial microsphere gel with porous silicon dioxide loaded with basalt and charcoal, and drying to prepare the acid-reducing soil conditioner for the southern red soil dry land. The acid-reducing soil conditioner for the southern red soil dry land not only improves the pH value of the soil, but also can loosen the soil and improve the air permeability of the soil to a certain extent, and promotes the absorption of crops to moisture and nutrient elements by improving the physical and chemical properties of the soil, so that the normal growth of the crops is ensured, and the acid-reducing soil conditioner has a wide application prospect.

The invention discloses a photovoltaic energy storage battery device and a photovoltaic energy storage system, and relates to the field of photovoltaic energy storage, the photovoltaic energy storage battery device comprises an energy storage device, the outer side of the energy storage device is provided with an expansion mechanism, the expansion mechanism comprises a main rod, the main rod is provided with an umbrella-shaped assembly, the umbrella-shaped assembly is arranged in an openable manner, and the bottom surface of the umbrella-shaped assembly is provided with a lighting mechanism. The illumination mechanism is used for illuminating the periphery of the main rod and comprises an illumination lamp, the energy storage device comprises a storage battery, the storage battery is fixed in the main rod, and due to the fact that the flexible solar panels are distributed in an umbrella shape, when the driving mechanism drives the lower ring body to move up and down, the illumination lamp can illuminate the periphery of the main rod. The supporting frame is pushed by the supporting rods to be supported at the bottoms of the flexible solar panels in the state of different gradients, the opening degree of the multiple umbrella-shaped flexible solar panels can be changed so as to adapt to sunlight irradiation at different angles, solar energy can be absorbed to the maximum extent, and the multiple supported flexible solar panels can achieve the sunshade effect.

The invention discloses a sulfur hexafluoride degradation catalyst as well as a preparation method and application thereof in catalytic degradation of SF6 (sulfur hexafluoride). The preparation method comprises the following steps: (1) adding pseudo-boehmite and / or cerous nitrate into deionized water to be fully dissolved, and stirring to be in an emulsion or solution state; sequentially adding phosphoric acid, a silicon source and a template agent while stirring, and adjusting the pH value of the mixed solution to 5.0-6.5; (2) stirring and evaporating moisture in the mixed solution obtained in the step (1), and further drying to obtain dry glue; grinding the dry glue, putting the ground dry glue into a crystallization kettle, crystallizing at 200-210 DEG C, washing a crystallized product to be neutral, drying, and calcining to remove the template agent, so as to obtain the Al and / or Ce doped SF6 degradation catalyst. The catalyst is used for catalytic degradation of sulfur hexafluoride and is low in catalytic temperature, excellent in degradation effect, excellent in SO2 selectivity, small in product harm, easy to treat, simple in catalyst preparation process and low in use cost.

The invention belongs to the field of batteries, and provides a lithium battery positive electrode material, a preparation method thereof and a lithium battery. The lithium battery positive electrode material comprises a lithium iron phosphate material with a carbon coating layer, and in a differential XRD (X-Ray Diffraction) spectrogram of the lithium battery positive electrode material, the sum of the absolute values of the peak areas of characteristic peaks between 17.0-17.5 degrees and 18.0-18.3 degrees is 0.043-0.060, the sum of the absolute values of the peak areas of characteristic peaks between 20.5-21.1 degrees is 0.030-0.065, and the sum of the absolute values of the peak areas of characteristic peaks between 25.4-26.2 degrees is 0.050-0.090. The lithium battery positive electrode material can effectively solve the problem that the DCR difference is large in the same SOC state in the charging and discharging process of a lithium battery, and the energy consumption of the lithium battery in use is reduced.

The utility model belongs to the technical field of energy storage, and particularly relates to a battery cell equalization circuit and an energy storage system, comprising a battery string formed by serially connecting battery cells, each battery cell is provided with a voltage conversion module in one-to-one correspondence, the input ends of the voltage conversion modules are connected in parallel with the battery cells, and the output ends of the voltage conversion modules are serially connected to form an equalization branch. And the equalization branch is connected with the battery series and parallel. According to the utility model, the battery string can be shunted in parallel through the equalization branch circuit formed by the voltage conversion modules, so that part of energy of the battery string is output through the equalization branch circuit. When the electric quantity or the voltage of the battery cell is unbalanced, the output power of the battery cell is adjusted through the voltage conversion module for equalization, and discharging equalization, charging equalization and off-line equalization are supported.

The invention relates to the technical field of charging management, and discloses an automobile charging control method and system.The automobile charging control method comprises the steps that charging data of an original automobile battery and an auxiliary battery are continuously collected, the collected data of the original automobile battery and the auxiliary battery are analyzed to obtain a charging balance situation, and the charging data of the original automobile battery and the auxiliary battery are sorted according to the time sequence; according to the method, an original vehicle battery monitoring sequence and an auxiliary battery monitoring sequence are formed, abnormal characteristic analysis, potential problem identification and charging equalization situation and abnormal characteristics are respectively performed on the original vehicle battery monitoring sequence and the auxiliary battery monitoring sequence, a corresponding charging strategy is formulated, and charging equalization is realized by dynamically analyzing a charging state and optimizing a charging process. According to the invention, over-charging and over-discharging phenomena are reduced, abnormity is identified in time, fault risks are reduced, the intelligent level of the battery management system is improved, the system is suitable for different application scenes, and the problem that charging dynamic adjustment is lacked when an automobile additionally provided with an auxiliary battery charges the battery in the prior art is solved.

The utility model relates to electronic circuit technical field, concretely is a kind of two-way flyback voltage detection two-in-one active equalization circuit, including electrically connected battery pack, switch matrix circuit and two-way flyback DC-DC converter, and there is control circuit in two-way flyback DC-DC converter electrically connected;The output end of control circuit is electrically connected with switch matrix driving circuit and switch matrix circuit, and the output end of switch matrix circuit is electrically connected with control circuit through acquisition circuit.The utility model this circuit compact structure, function is comprehensive, through accurate switch tube control and algorithm, realized the accurate detection and active equalization of battery voltage, provided strong support for the optimization of battery management system, realized two-in-one integration of active equalization circuit and voltage detection function, simultaneously can be with the battery strobe switch tube flexible selection battery to be detected, furthermore, the design also optimizes framework, reduces cost.

The application relates to a charging control method and device of a modular commutated converter, a flexible direct-current power transmission system, a medium and a computer program product. The modular commutated converter comprises an H-bridge module and a switched capacitor module, the H-bridge module is connected to an alternating current end of the modular commutated converter and the switched capacitor module, and the method comprises the following steps: in the case that the modular commutated converter is pre-charged, according to a received modulation instruction, determining a first bridge arm pair serving as a reference conduction in the H-bridge module of the modular commutated converter; according to the modulation instruction and the total number of switched capacitor sub-modules in the switched capacitor module of the modular commutated converter, determining a first input number of the switched capacitor sub-modules; controlling the first bridge arm pair to be conducted, and based on the first input number and a preset number threshold, adjusting the running state of a second bridge arm pair corresponding to the first bridge arm pair in the H-bridge module. The method is beneficial to balancing the voltages of all sub-modules in the H-bridge module.

The invention relates to a printing machine (01) designed as a sheet-fed printing press (01), having at least one printing head (09) and a roll unwinding device (24), wherein the printing machine (01) is provided with a transport path for transporting a printing substrate (02), and wherein the printing machine (01) has a central cylinder (07) as a printing substrate guide element (07), the printing head (09) being arranged pointing towards the central cylinder, and wherein the printing machine (01) has a charging device (03) having at least one charging electrode (04) designed as a DC voltage electrode (04), and wherein the region of the transport path for transporting the printing substrate (02) which is adjacent to the charging electrode (04) is arranged before the printing point (11) defined by the printing head (09), and wherein the central cylinder (07) is earthed, and wherein the printing head (09) is earthed, and wherein the minimum distance (c) between at least one spray opening (12) of the printing head (09) and at least one charging electrode (04) is at least 20 mm.

The invention provides an environment-friendly sludge baking-free building block and a preparation method thereof, and belongs to the technical field of solid waste resource utilization, the environment-friendly sludge baking-free building block comprises, by weight, 30-60 parts of sludge, 30-50 parts of a cementing agent, 5-20 parts of an alkali activator, 2-10 parts of a reinforcing agent and 10-20 parts of water, the cementing agent comprises blast furnace slag and fly ash, the mass ratio of the blast furnace slag to the fly ash is (0.5-5): 1, and the mass ratio of the alkali activator to the reinforcing agent is (0.5-5): 1. The reinforcing agent comprises a phosphorus-based reinforcing agent and an aluminum-based reinforcing agent, and the mass ratio of the phosphorus-based reinforcing agent to the aluminum-based reinforcing agent is (0.8-1.2): 1. The silica-alumina ratio and the microstructure of the gel phase are regulated and controlled through the blast furnace slag, the fly ash and the reinforcing agent, heavy metal is cured through three curing mechanisms of physical packaging, chemical bonding and surface adsorption on the basis of an alkali excitation system, and consolidation of pollutants in the sludge is intensified in an all-around mode.

The invention discloses a control method, system and equipment of an electric golf cart and a storage medium, belongs to the technical field of control of electric golf carts, and solves the technical problem of full charge protection power failure during downhill when a battery is high in SOC (State of Charge) at present. The method comprises the following steps: detecting a current direction and a charging handshake message through a BMS (Battery Management System); when the current is positive and a charging handshake message exists, it is judged that the electric golf cart enters a charging stage, and a first switch is controlled to be closed for charging; when the current is positive and no charging handshake message exists, it is judged that the electric golf cart enters a braking energy feedback stage; the conditions of the battery SOC, the battery monomer voltage U and the battery temperature T are collected in real time through the BMS; according to the conditions of the battery SOC, the battery monomer voltage U and the battery temperature T, redundant feedback energy generated by braking is selected to be released or stored. Feedback electric quantity is absorbed through the energy releasing device, normal work of the electromagnetic brake is guaranteed, sudden braking is avoided, and personnel safety is guaranteed.

The present application discloses a battery control method, ground equipment, medium and program product, which belongs to the field of charge and discharge control technology. The method includes: obtaining the total charge and discharge state parameters and external charge and discharge parameters of the battery pack; when the total charge and discharge state parameters do not match the external charge and discharge parameters, selecting at least one target battery from the battery pack, so that after the charge and discharge state parameters of the target battery are assigned to preset values, the total charge and discharge state parameters recalculated match the external charge and discharge parameters; through the bidirectional DCDC corresponding to the target battery, the target battery is controlled to charge and discharge based on the charge and discharge strategy corresponding to the preset value, and through the bidirectional DCDC corresponding to each remaining battery, each remaining battery is controlled to charge and discharge based on the charge and discharge balance strategy. The present application can maximize the charge and discharge balance between batteries with different battery voltages.

The invention provides a vehicle-mounted charging device and a charging control method thereof, and the device comprises a commercial power switching module, an AC / DC module, a DC / DC module, a battery pack interface, a storage battery interface, and a shunting regulation and control module. The mains supply switching module is connected with the alternating current side of the AC / DC module, and the direct current side of the AC / DC module is connected with the input end of the shunt regulation and control module; a first output end of the shunting regulation and control module is connected with a battery pack interface through a first branch; the battery pack interface is used for being connected with a battery pack; a second output end of the shunting regulation and control module is connected with a DC / DC module through a second branch, and the DC / DC module is connected with a storage battery interface; the storage battery interface is used for being connected with a storage battery.

The invention discloses a safe and reliable lithium battery pack equalization charging system, which comprises a multi-battery equalization charging control system, the multi-battery equalization charging control system comprises a detection stage and an equalization stage, in the detection stage, a control chip is used for monitoring the voltage and temperature of each monomer in a battery pack in real time; the equalization stage is composed of an equalization circuit board, a control chip, a switch circuit and the like, a plurality of equalization circuit units are installed on the equalization circuit board, each equalization circuit unit is connected with one battery monomer, and the control chip in the detection stage periodically monitors the voltage difference between the battery monomers and controls the switch circuit to switch on the equalization circuit board. If the voltage difference exceeds a set threshold value, the control chip is in an equalization stage; the battery consistency can be improved, the service life of the battery can be prolonged, the safety can be improved, the energy storage efficiency can be ensured, the output power can be stabilized, the battery performance can be optimized, and the battery replacement period can be prolonged.

The invention provides a method for balancing over-voltage and under-voltage of a battery cell, a battery management system and a vehicle, and belongs to the technical field of battery cell balancing. The method is applied to a battery management unit in a battery management system, and comprises the following steps: receiving an equalization instruction issued by an upper computer, and collecting the voltage of each single cell in each battery pack in real time; generating a voltage detection signal corresponding to the to-be-balanced single cell according to the voltage of the to-be-balanced single cell indicated by the identifier of the to-be-balanced single cell and a preset reference voltage; according to the equalization instruction and the voltage detection signal, generating a charging and discharging protection signal corresponding to the to-be-equalized single cell; and according to the charging and discharging protection signal, generating an equalization protection signal corresponding to the to-be-equalized single cell, and cutting off an equalization module power supply through the equalization protection signal so as to control the equalization module to stop running. According to the invention, the effects of preventing the battery cells from being overcharged or overdischarged in the active equalization process and reducing the maintenance difficulty of the battery management system can be achieved.