61 results about "VRLA battery" patented technology

The present invention discloses a professional diagnosis method of battery performance analysis, Through the overall evaluation of experiential data library, several parameters about the battery are input into the artificial neural network, outputting capacity prediction and service life prediction of each battery, etc. and giving useful advices for each battery. Therefore the result is much more in conformity with the real condition of the battery. Besides, it designs an adaptive learning function of the abovementioned artificial neural network. This invention effectively avoids the defect of evaluating the VRLA battery performance at single moment, from single perspective and by single method, and it does the real-time monitoring and evaluating for the performance of the battery during VRLA battery working period, which is easy to operate, and avoids checking discharge test to the battery so that it doesn't affect the cycle life of the VRLA battery.

The invention relates to a storage battery impedance detection device excited by a SPWM signal generated by a single-chip microcomputer, and relates to a four-wire detection device for the internal resistance of a sealed valve-regulated lead-acid battery. One wire is connected to the voltage detection device to form a voltage sampling circuit, and the other two wires are connected to a current constant current source to form a current injection circuit. The excitation signal comes from the SPWM signal generated by the microcontroller through programming, and the modulation frequency of the SPWM excitation signal It can be adjusted according to the actual measurement situation. The invention obtains sinusoidal excitation signals of different frequencies through the SPWM modulation method to measure the internal impedance distribution of the sealed valve-regulated lead-acid battery VRLA, and can comprehensively grasp the internal resistance of the sealed valve-regulated lead-acid battery VRLA in the working state of the sealed valve-regulated lead-acid battery. line detection device.

The invention relates to a pulse charging method used for prolonging VRLA battery service life. The invention aims at provides a pulse charging method used for prolonging VRLA battery service life, such that the service life of a valve-regulated lead acid battery is prolonged. The invention adopts a technical scheme that, a VRLA battery has an output voltage of U and a capacity of C. The method is characterized in that the method is preceded in three sections which are a section A, a section B, and a section C. In the section A, constant-current charging is carried out with a charging limited current I. In the section B, periodic-change charging is carried out with constant current of the limited current I and constant-voltage of a second charging voltage U2. In the section C, periodic-change charging is carried out with constant-voltage of a first charging voltage U1 and constant-voltage of the charging voltage U2. In the section A, when a voltage is increased to U1, the process turns to the section B. In the section B, when the battery is charged to almost full, the process turns to the section C. The invention is suitable to be used in a field of storage battery charger.

The invention relates to a new VRLA battery float model. The model covers the steady state and transient float charge behaviour of both positive and negative electrodes. Backup analysis verifies the internal polarisation distribution for a conventional 2V-cell polarisation behaviours can be identified without the need for a physical reference electrode. The estimated individual electrode polarisation allows early detection of common failure modes like negative plate discharge as well as a reference for float voltage optimisation. Furthermore, the positive polarisation relating to minimum grid corrosion may be correlated with the occurrence of the peak of a “Tafel” like resistance used by the model. The model encourages utilisation of low signal perturbation for testing a cell's state of health and state of charge conditions while at float.

A system for adding fluid to a valve regulated lead acid (“VRLA”) battery cell includes an injection head assembly coupled to a vent opening. The injection head assembly replenishes water or electrolyte depleted during operation of the VRLA cell. Fluid is dispersed evenly across one or more absorbent gas mats to promote even absorption by the mats. Fluid may be dispersed while the VRLA is in operation, and fluid dispersion may be accomplished using continuous streams or pulsed streams.

A method and apparatus for monitoring the capacity of a valve regulated lead acid battery comprising at least one battery monitor connected to the valve regulated lead acid battery; a centralized system connecting the battery monitor through an industry standard data system to a central office; and an alarm connected to the centralized system; wherein, a short-term discharge test is performed on the battery using the battery monitor which provides input parameters for a neural network and fuzzy logic network used in combination with a prediction algorithm to calculate the predicted capacity; and, wherein, the alarm is activated when said predicted capacity falls below eighty percent, when an individual cell voltage is reduced to 1.95 volts or less, or when a system failure occurs

The invention discloses a valve-regulated lead-acid storage battery health state prediction method based on an improved LSTM neural network. The method comprises the steps: obtaining the floating charge voltage, the average charge current, the average charge duration, the discharge cut-off voltage and the discharge duration input data of a storage battery through daily measurement of an online monitoring device, the capacity of the storage battery being measured through check equalizing charge every two months; with n days being taken as a time span, establishing n-dimensional sample input x(ti); establishing a neural network model comprising a plurality of LSTM neural network units by taking a storage battery capacity data sequence h(ti) as output and the x(ti) as input; in an initial state, assigning a weight matrix W and an offset matrix b in the network by randomly generating a decimal between 0 and 1; and introducing a Dropout algorithm to improve the LSTM neural network model, and improving the training process of the LSTM neural network model. According to the method, the problems of over-low prediction precision and under-fitting caused by insufficient data samples can be reduced, the health state of the transformer substation storage battery is accurately predicted, and the utilization rate of the storage battery is improved.

Light-weight VRLA batteries comprise a thin lead substrate that is supported by non-conductive, preferably plastic frames that provide structural stability to accommodate stress and strain in the bipole assembly. In particularly preferred batteries, the plastic frames are laser welded together and phantom grids and electrode materials are coupled to the respective sides of the lead substrate. Where the phantom grid is an ultra-thin lead grid, the lead grid is preferably configured to provide a corrosion reserve of less than 10 charge-discharge cycles and the bipole assembly is charged in an in-tank formation process. Where the phantom grid is a non-conductive grid, the lead grid is preferably a plastic grid and the bipole assembly is charged in an in-container formation process. Consequently, weight, volume, and production costs are significantly reduced while specific energy is substantially increased.

The invention discloses a formation technology of a valve control lead-acid storage battery for an electric vehicle. The formation technology comprises the following steps: (1) manufacturing of lead powder; (2) manufacturing of slab lattices; (3) surface treatment of slab lattices; (4) manufacturing of pole plates; (5) assembly technology; and (6) charging technology. By adopting formation technology employing new material prescription, new structure, new technology, new technique and the like, the industry technological problem of the discharge of a plenty of sewage containing heavy metal(such as lead and cadmium) in traditional technology is solved, thus laying the foundation for energy conservation and emission reduction.

Disclosed herein are soluble content absorbent glass mats or AGM separators for VRLA, AGM, or VRLA AGM batteries. Such glass mats may be prepared from insoluble glass fibers blended with soluble content materials. Upon exposure to a suitable solvent, the dissolving or solvating of the soluble content produces voids within the glass mat. The voids enhance the absorption of the solvent within the glass mat. The soluble content may be acid-soluble glass fibers or microfibers.

This invention discloses a method of performance analysis for VRLA battery which applies the method of using the float voltage dispersion ratio of the battery to evaluate the battery performance from a new perspective, and it is an online real-time test which applies several ways to evaluate the performance of the VRLA battery. According to the relevance between the dispersion of the float charge voltage of the battery and its performance, the method gets the result of the battery performance through calculating the battery float charge voltage dispersion ratio and making it relevant with the battery performance. It has small workload, convenient operation and no danger to the system when doing online testing. It also won't affect the cycle life of the VRLA battery.

The invention belongs to electrochemiscal energy technical field ,which concretely relates to a valve controlled lead acid battery whose positive electrode contains composite oxides, the composite oxides is formed by rare earth oxide with a certain chemical ratio and oxide of V group metal elements, the rare earth oxide is one of lanthanum department whose mass percentage is 3~9% in composite oxides and that of V group metal elements is 97~91%. Add the composite oxides into lead powder 1according the mass percentage of lead powder powder which is (0.03~1.0)%, then valve controlled lead acid battery can be manufactured. The accumulator has notably increased discharge capacity by adding the composite oxides in positive electrode, prolong its service life, and has important practical use in development of motor bicycle power source and extension of lead accumulator into other fields.

A valve regulated lead-acid (VRLA) battery having a plurality of stacked, interconnected spiral-wound cells. Each cell has a length (L) less than a diameter (D) and each cell has a non-conductive case containing spiral-wound positive and negative plates, a separator between the plates, an acidic electrolyte, and a positive post and a negative post disposed through the case for electrical connection to an adjacent cell in series.

The invention discloses a wrapping machine for medium- and large-sized valve-regulated lead acid (VRLA) batteries. The wrapping machine for medium- and large-sized VRLA batteries comprises a base frame, wherein at least two groups of plate separating paper uncoiling mechanisms are mounted on the base frame in parallel. Each plate separating paper uncoiling mechanism comprises a rotating shaft, a driving motor, a first limiting disc, a second limiting disc, and a limiting frame, wherein the driving motor is used for driving the rotating shaft to rotate; the rotating shaft is sleeved by the first limiting disc, and the first limiting disc is relatively fixed with the rotating shaft and is close to the driving motor; the rotating shaft is sleeved by the second limiting disc, and the second limiting disc is relatively fixed with the rotating shaft through a locking bolt and is far from the driving motor; the limiting frame is arranged on one side of the rotating shaft, is relatively fixed with the base frame, and is provided with a plurality of limiting openings used for being penetrated by plate separating paper. The wrapping machine provided by the invention has the advantages that the overall layout is linear, so as to facilitate the layout of an automatic production line and achieve a large space factor; the machine entirely adopts a mechanical linkage mode, so that the running is reliable and stable, and the precision is high; the machine is widely applicable for the wrapping of polar plates with various specifications of medium- and large-sized VRLA batteries, so that the applicability is high; the production efficiency is high, so that the machine can effectively replace manual or semi-automatic wrapping operations.

The invention relates to the field of valve-regulated lead acid battery, more particularly to a valve-regulated lead acid battery electrolyte, differences thereof comprise that: components thereof comprise 14 parts of sulfuric acid and 0.5-3 parts of silica sol based on weight ratio, wherein, the sulfuric acid has the concentration of 30%-40%(Wt), the silica sol has the content of silicon dioxide of 10%-35%(Wt). A manufacturing method of the valve-regulated lead acid battery electrolyte comprises in sequence: the first step of: using deionized water and analytic reagent concentrated sulfuric acid to formulate sulfuric acid solution having the concentration of 30%-40%(Wt); the second step of: adding 0.5-3 parts of silica sol having the content of silicon dioxide of 10%-35%(Wt) into the well-formulated sulfuric acid solution, and after premixing, introducing the sulfuric acid solution into the valve-regulated lead acid battery. The valve-regulated lead acid battery to which the inventive valve-regulated lead acid battery electrolyte is applied has outstanding performances.

The invention relates to a method for improving the health state of a valve-regulated lead-acid storage battery based on resonance current pulses. The method comprises the following steps: firstly, calibrating the capacity of the valve-regulated lead-acid storage battery by utilizing cyclic test equipment, then testing by utilizing a low-frequency constant-potential electrochemical impedance spectroscopy, and calibrating the initial health state of the valve-regulated lead-acid storage battery according to the tested complex impedance response; then, utilizing a weak voltage signal generated by a signal generator to generate a resonance current pulse through a high-speed power amplifier so as to load the valve-regulated lead-acid storage battery, and then repeating capacity calibration and health state calibration; and finally, fitting the phase response and the frequency of the valve-regulated lead-acid storage battery measured in the step of calibrating the health state to obtain a radius parameter of the spherical electrode to quickly evaluate the health state of the valve-regulated lead-acid storage battery. According to the method, the health state of the valve-regulated lead-acid storage battery can be quickly detected by adopting a low-frequency constant-potential electrochemical impedance spectroscopy test, and the health state of the valve-regulated lead-acid storage battery can be quickly improved at low cost by lifting the valve-regulated lead-acid storage battery through the resonance current pulse, so that the method has great significance in improving the efficiency and the reliability of an electrical energy storage system.

Improved battery separators, batteries, and systems, as well as methods relating thereto are disclosed herein for use in various lead acid batteries such as valve-regulated lead acid (VRLA) batteriesthat include one or more AGM layers. The improved battery separators described herein may provide a battery system with an advantage of a significantly decreased acid filling time and a significantlyincreased acid filling speed. Various improved batteries, methods and systems are described herein using such improved battery separators that increase acid filling speed and decrease acid filling time for a VRLA battery.

The invention discloses a battery health degree detection method, and relates to the technical field of valve-regulated lead-acid storage batteries. According to the battery health degree detection method provided by the technical scheme provided by the invention, the health degree of a valve-regulated lead-acid storage battery in a floating charge state is predicted based on the voltage, the current, the internal resistance and the capacity of the valve-regulated lead-acid storage battery, and the battery capacity coefficient, the open-circuit voltage value and the direct-current internal resistance of the valve-regulated lead-acid storage battery in the floating charge state after multiple discharge tests are estimated; and the voltage or capacity ratio of the valve-regulated lead-acid storage battery is calculated. By analyzing and assimilating the multi-dimensional data of the valve-regulated lead-acid storage battery, the aged valve-regulated lead-acid storage battery can be effectively identified, and the reliability of the valve-regulated lead-acid storage battery is ensured.

The invention discloses a lead-acid battery pole post sealant formula and a preparation method thereof. The lead-acid battery pole post sealant formula includes the following components, and the mass percentage of each component is: 40% to 65% of bisphenol A epoxy resin , hydrophobic silica 10% to 20%, calcium oxide powder 3% to 8%, compound curing agent 20% to 35%; compound curing agent is the composition of dicyandiamide and low molecular weight polyamide A combination of amine and m-xylylenediamine. The epoxy resin is mixed with hydrophobic silica and calcium oxide powder to form a composite sealant. The hydrophobic silica improves the hydrophobicity of the epoxy resin and acts as an acid barrier; the calcium oxide powder can neutralize and block the acid further. Corrosive epoxy resin, and at the same time, the two fillers also effectively improve the toughness and temperature resistance of the sealant; realize the valve-controlled sealing of the battery, reduce or eliminate the harm caused by it, and improve the battery in harsh working environments. uniformity and reliability.

This invention discloses a method of performance analysis for VRLA battery which applies the method of using the float voltage dispersion ratio of the battery to evaluate the battery performance from a new perspective, and it is an online real-time test which applies several ways to evaluate the performance of the VRLA battery. According to the relevance between the dispersion of the float charge voltage of the battery and its performance, the method gets the result of the battery performance through calculating the battery float charge voltage dispersion ratio and making it relevant with the battery performance. It has small workload, convenient operation and no danger to the system when doing online testing. It also won't affect the cycle life of the VRLA battery.

The invention discloses an internalization process of a valve-regulated lead-acid battery for an electric vehicle, comprising the following steps: (1) manufacturing lead powder; (2) manufacturing grid; (3) grid surface treatment; (4) pole plate Manufacturing; (5) assembly process; (6) charging process. The invention adopts new material formula, new structure, new process, new technology and other internalization process, solves the industrial technical problem that the traditional process produces a large amount of lead-containing and cadmium-containing heavy metal sewage discharge, and lays the foundation for energy saving and emission reduction.

A valve regulated lead-acid (VRLA) battery having a plurality of stacked, interconnected spiral-wound cells. Each cell has a length (L) less than a diameter (D) and each cell has a non-conductive case containing spiral-wound positive and negative plates, a separator between the plates, an acidic electrolyte, and a positive post and a negative post disposed through the case for electrical connection to an adjacent cell in series.

The invention discloses a manufacturing method of a deep-circulation small valve-regulated lead-acid storage battery pole plate. The manufacturing method comprises the following steps: step 1, preparing a pole plate lead paste formula: lead powder, chemical short fibers and 4BS seed crystals; step 2, performing high-temperature paste mixing; coating the prepared lead paste on the plate grid; 4, spraying acid on the polar plate in the step 3, feeding the polar plate subjected to acid spraying into a drying kiln for surface drying, drying the polar plate in the drying kiln until the water content of the lead plaster on the surface of the grid is 9-12%, and taking out the polar plate; according to the formula provided by the invention, a 4BS seed crystal is added, meanwhile, a high-temperature paste mixing process is used during paste mixing, the lead paste generates 4BS at a high-temperature state, then crystal nucleuses are provided for 4BS when the pole plate is cured, the lead paste continues to grow in the curing process, a large amount of 4BS, 3BS and PbO are generated in the lead paste of the pole plate, a firm framework is formed after formation of 4BS structures, and the lead paste is formed by the lead paste of the pole plate. The binding force of the lead plaster and the grid is enhanced, the loosening and softening speed of the grid lead plaster caused by deep discharge circulation of a polar plate is slowed down, and the cycle life of the battery is prolonged.

The invention relates to a new VRLA battery float model. The model covers the steady state and transient float charge behavior of both positive and negative electrodes. Backup analysis verifies the internal polarization distribution for a conventional 2V-cell polarization behaviors can be identified without the need for a physical reference electrode. The estimated individual electrode polarization allows early detection of common failure modes like negative plate discharge as well as a reference for float voltage optimisation. Furthermore, the positive polarization relating to minimum grid corrosion may be correlated with the occurrence of the peak of a “Tafel” like resistance used by the model. The model encourages utilisation of low signal perturbation for testing a cell's state of health and state of charge conditions while at float.

The invention discloses a storage battery pack fault self-healing system and method for an electric power plant station. The system comprises a valve-regulated lead-acid storage battery pack, a segmented capacity converter, a lithium battery pack, a valve-regulated lead-acid storage battery pack online monitoring device and a self-healing system control device. The valve-regulated lead-acid storage battery pack is divided into a plurality of sections, and each section comprises a plurality of valve-regulated lead-acid storage batteries; each valve-regulated lead-acid storage battery section is provided with a sectional capacity converter, and the sectional capacity converters are connected with the lithium battery pack in parallel; the lithium battery pack is connected to a direct-current bus through a step-down silicon chain; and the valve-regulated lead-acid storage battery pack online monitoring device is connected with the valve-regulated lead-acid storage battery pack. When faults such as internal open circuit of the storage batteries occur in the valve-regulated lead-acid storage battery pack, the lithium iron phosphate storage battery pack can maintain continuous power supply of a direct-current power supply, and meanwhile, the faulted storage batteries can be automatically and quickly isolated, and power supply of the remaining batteries in the valve-regulated lead-acid storage battery pack is recovered; and self-fault repair of the storage battery pack and fault healing of the direct-current power supply system are realized.

The invention discloses improved battery separators, batteries, and systems, as well as methods relating thereto for use in various lead acid batteries such as valve-regulated lead acid (VRLA) batteries that include one or more AGM layers. The improved battery separators described herein may provide a battery system with an advantage of a significantly decreased acid filling time and a significantly increased acid filling speed. Various improved batteries, methods and systems are described herein using such improved battery separators that increase acid filling speed and decrease acid filling time for a VRLA battery.

Light-weight VRLA batteries comprise a thin lead substrate that is supported by non-conductive, preferably plastic frames that provide structural stability to accommodate stress and strain in the bipole assembly. In particularly preferred batteries, the plastic frames are laser welded together and phantom grids and electrode materials are coupled to the respective sides of the lead substrate. Where the phantom grid is an ultra-thin lead grid, the lead grid is preferably configured to provide a corrosion reserve of less than 10 charge-discharge cycles and the bipole assembly is charged in an in-tank formation process. Where the phantom grid is a non-conductive grid, the lead grid is preferably a plastic grid and the bipole assembly is charged in an in-container formation process. Consequently, weight, volume, and production costs are significantly reduced while specific energy is substantially increased.

The invention relates to the technical field of lead-acid storage batteries, and discloses a DSP-based valve-regulated lead-acid storage battery charging system. The DSP-based valve-regulated lead-acid storage battery charging system comprises a charging control module and a rectifier module which are connected with a charging circuit; the charging control module is used for controlling the voltage of the charging circuit; the rectifier module is used for controlling the current of the charging circuit; the lower ends of the charging control module and the rectification module are connected with a current detection module and a voltage detection module. The DSP-based valve-regulated lead-acid storage battery charging system further comprises a temperature detection module which is arranged in the valve-regulated lead-acid battery and is used for detecting the internal temperature of the battery and detecting the external temperature; and the DSP-based valve-regulated lead-acid storage battery charging system further comprises a DSP system used for digitally and intelligently controlling the charging state of the battery. The charging effect of the valve-regulated lead-acid storage battery is intelligently controlled through the DSP system, so that the valve-regulated lead-acid storage battery can meet the optimal charging effect in different environments, the charging efficiency and the charging effect of the battery are ensured, the damage to the storage battery in the charging process is effectively reduced, the service life of the storage battery is effectively prolonged, and the economic loss is reduced.