140 results about "Nickel–cadmium battery" patented technology

Methods of manufacturing a rechargeable power cell are described. Methods include providing a slurry or paste of negative electrode materials having low toxicity and including dispersants to prevent the agglomeration of particles that may adversely affect the performance of power cells. The methods utilize semi-permeable sheets to separate the electrodes and minimize formation of dendrites; and further provide electrode specific electrolyte to achieve efficient electrochemistry and to further discourage dendritic growth in the cell. The negative electrode materials may be comprised of zinc and zinc compounds. Zinc and zinc compounds are notably less toxic than the cadmium used in NiCad batteries. The described methods may utilize some production techniques employed in existing NiCad production lines. Thus, the methods described will find particular use in an already well-defined and mature manufacturing base.

The invention relates to an automotive power supply system and a control method thereof. The automotive power supply system comprises a vehicular power battery (1), a start-up battery (3) and a plurality of loads which respectively form a start-up circuit, a load feed circuit and a charging circuit, wherein, the start-up circuit is used for connecting a power supply loop between the vehicular power battery (1) and the loads only when the start-up circuit is connected; the automotive power supply system also comprises a charge control device (12); the charge control device (12) is used for respectively monitoring the voltages of the vehicular power battery (1) and the start-up battery (3) in a real-time manner and cutting off or connecting the charging circuit according to the monitoring result. The technical proposal adopted in the automotive power supply system and the control method thereof can charge the start-up battery at any time, so the start-up battery does not need to reserve a large mount of electrical energy, and the start-up battery which is used in the automotive power supply system and the control method thereof can adopt the battery that has smaller capacity and provides instant high current discharge, such as a nickel-cadmium battery; for the combination whole-body of the charge control device (12), the volume is small, the weight is light, the space in a vehicle chamber is saved greatly, the automotive load is lightened, and the cost is also lowered.

The invention discloses a method for surface modification of a hydrophobic polymer microporous membrane. The method comprises the steps of dissolving a pyrocatechol compound and a polyamine molecule in a solvent, and adjusting the mixture to be alkaline so as to obtain a modification solution; soaking the hydrophobic polymer microporous membrane in the modification solution to realize the surface modification of the hydrophobic polymer microporous membrane through reaction, wherein the structural formula of the pyrocatechol compound is shown by a formula I, and in the formula I, R is H, -CH3, -(CH2)nCOOH, -CHO or OH and n is an integer between 0 and 2. The microporous membrane modified by the method disclosed by the invention can be applied in the fields of diaphragms of positive and negative materials of lithium secondary batteries, nickel-hydrogen batteries, nickel-cadmium batteries, polymer batteries and the like, as well as separation membranes including reverse osmose membranes, micro-filtration membranes, nano-filtration membranes, ultrafiltration membranes, electrodialysis membranes, gas separation membranes and the like to improve the performances of materials and devices.

Methods of manufacturing a rechargeable power cell are described. Methods include providing a slurry, paste, or dry mixture of negative electrode materials having low toxicity and including dispersants to prevent the agglomeration of particles that may adversely affect the performance of power cells. The methods utilize semi-permeable sheets to separate the electrodes and minimize formation of dendrites; and further provide electrode specific electrolyte to achieve efficient electrochemistry and to further discourage dendritic growth in the cell. The negative electrode materials may be comprised of zinc and zinc compounds. Zinc and zinc compounds are notably less toxic than the cadmium used in nickel cadmium batteries. The described methods may utilize some production techniques employed in existing NiCad production lines. Thus, the methods described will find particular use in an already well-defined and mature manufacturing base.

The invention relates to an intelligent adaptive charge management device for a lithium polymer storage battery and a control system thereof. The intelligent adaptive charge management device mainly comprises a programmable charge control chip, a storage battery, a temperature acquisition module, a battery parameter model base and the like. During charging and discharging, the programmable charge control chip detects the data, such as the current, voltage, temperature and the like, of the storage battery in real time, and transmits the data to a charge management control unit therein to acquire an output signal through calculation; the output signal is compared with a pre-stored standard value in the battery parameter model base; the comparison result is transmitted to the charge management control unit to acquire the corresponding charging current and voltage values through calculation; and a charge control module is started to perform charge management on the storage battery so as to fulfill the aim of adaptive charging, completely overcome the overcharging phenomenon and radically avoid thermal runaway. The charge management device not only overcomes the defect that the conventional charger has a single charging mode, but also enables a nickel-cadmium battery charging device and a lithium ion battery charging device to be used universally.

The invention relates to a portable wireless charger, particularly to the secondary batteries of the nickel-hydrogen batteries and nickel-cadmium batteries having the parallel-connected separated detection charging mode and series-connected combined discharging mode to achieve highest efficiency of power release. The present invention also provide a DC TO AC output control unit coupled with the power storing unit and converting a discharging current into an output power with a predetermined voltage level and a wireless power transmitter having stable high efficiency of the output power. Whereby the present invention provides the slim portable wireless charging platform for charging mobile devices with built-in wireless inductive receiver without electrical contacts to enhance ease of use and safety effect.

A method for leaching mixed cathode and anode materials from waste nickel-cadmium batteries, which is introduced by the invention, comprises the following steps: placing the mixed cathode and anode materials separated from the waste nickel-cadmium batteries into a container which is resistant to pressure and sulfuric acid and nitric acid corrosion, sealing the container, pumping the sulfuric acid and nitric acid into the container and filling industrial pure oxygen to leach the mixed cathode and anode materials from the waste nickel-cadmium batteries. The leaching temperature is 20-100 DEG C; the leaching pressure is 0.05-0.5MPa; the initial concentration of the sulfuric acid for leaching is 1-5mol/L and that of the nitric acid is 5-20g/L; the leaching time is 1-5h; stirring is carried out at a speed of 30-100r/min in the process of leaching. The addition of the sulfuric acid is 101-200% of the theoretical consumption of the sulfuric acid leaching all the metals in the mixed cathode and anode materials added into the reaction container.

An improved solar powered LED-based lighting fixture providing substantial increases in the apparent light output compared to prior art solar powered LED-based lighting fixtures. This improvement in preferred embodiments results from the addition of inexpensive spherical lenses that create a large number of images of LED light sources, each image having substantially reduced brightness as compared to the real LED light source. These images with substantially reduced brightness result in beautiful patterns, that still appear very bright to a night time observer, because the LED source itself is in fact too bright to look at directly. In a preferred embodiment ten plastic 0.5-inch spherical lenses are positioned along the bottom edge of the cone at the bottom of lamp. Each of these spherical lenses creates multiple images of the single source LED, all nearly as bright as the source itself. As a result the perceived delivery of light intensity to an observer is multiplied by a factor of approximately 10 times. In other preferred embodiments, conventional primary cell alkaline batteries are used in place of rechargeable Nickel-Cadmium batteries, whereby the battery cost is cut in half and the energy storage capacity tripled. Applicant has discovered that the conventional primary cell alkaline batteries are safely and effectively recharged by the solar cell.

The invention provides a leaching method of an anode material of a used nickel cadmium battery, which comprises the following steps: placing the anode material separated from the used nickel cadmium battery into a container resisting corrosion of sulfuric acid and nitric acid, then sealing the container, pumping the sulfuric acid and the nitric acid into the container, and introducing industrial pure oxygen to leach the anode material of the used nickel cadmium battery. The leaching temperature is 20-100 DEG C, the leaching pressure is 0.05-0.5 MPa, the leached sulfuric acid initial concentration is 1-5mol/L, the nitric acid initial concentration is 5-20g/L, the leaching time is 1-5h, the stirring is carried out during the leaching, and the stirring speed is 30-100r/min. The addition of the sulfuric acid is 101-200 percent of theoretical consumption of the sulfuric acid leached out of all metal in the anode material added in the reaction container.

The invention discloses a charging method for nickel-hydrogen and nickel-cadmium cells, wherein the charging process of a cell is divided into N sections, threshold valves and limit values of which are determined; when the cell is charged, if the negative value increasing of the voltage occurs, whether the cell is normally charged is judged; if the charging is abnormal, the charging process is directly jumped to the N section and enters the trickle charge state; when the cell voltage corresponding to the limit value of any section is lower than the threshold value of the section, the charging process is directly jumped to the N section and enters the trickle charge state. The method and the device adopting the invention can quickly enter the charging protection state when the cells are abnormal, thereby achieving an aim of safe charging.

A doorknob having a graspable knob portion that includes a graspable knob portion having a power source, an illumination source, and a controller for controlling the flow of power between the illumination source provided therein; the power source being selected from various power source types including nickel cadmium batteries, regular batteries, solar panels for charging rechargeable batteries, etc.; the control circuitry including on/off switches, dimmer on/off switches, light sensing circuitry with relays, etc.; the light source including piezo crystals with charging circuits, LEDs, lasers, fiber optics, etc.

The invention discloses an intelligent charger for a nickel-hydrogen nickel-cadmium battery. The intelligent charger comprises a switching power supply circuit and a DC-DC (Direct Current to Direct Current) power supply circuit controller by using a singlechip, and is characterized in that: the DC-DC power supply circuit is used for outputting a two-pole interface for charging a battery pack through an AD (Analog to Digital) sampling circuit of the singlechip; the AD sampling circuit is a unit of the singlechip for feeding back the voltage and current information of the battery pack; and the PWM (Pulse Width Modulation) output end of the singlechip is connected to the DC-DC power supply circuit. Battery assembly and the types and quantity of assembled batteries are detected in real time through the feedback performance of the AD sampling circuit of the singlechip, so that reasonable PWM waveforms are output by the singlechip, and constant current, constant voltage or turbulent current charging modes are switched by using a modulation charger under different battery states. The technical scheme of the invention is implemented and applied specific to the general charging requirement of the nickel-hydrogen nickel-cadmium battery. The intelligent charger has the characteristics of safe and stable system running.

The invention discloses a flexible photovoltaic integrated power supply system. The power supply system comprises a physical power supply, a chemical power supply and a power supply controller. Solar energy is converted into electric energy through the physical power supply. A flexible thin film solar battery module is adopted and comprises an amorphous silicon thin film solar battery module, a microcrystalline silicon thin film solar battery module, an amorphous silicon-germanium thin film solar battery module, and a laminated solar battery module consisting of the amorphous silicon thin film solar battery module, the microcrystalline silicon thin film solar battery module and the amorphous silicon-germanium thin film solar battery module, or a copper-indium-gallium-selenium thin film solar battery module. The chemical power supply adopts a storage battery component which comprises a nickel-cadmium battery module, a nickel-hydrogen battery module, a lithium ion battery module, an alkaline-manganese charging battery module or a lead-acid storage battery module. The power supply controller is a solar power supply single output controller with the model of V-ST10, is respectively connected with the physical power supply, the chemical power supply and the load, and is used for regulating and controlling the physical power supply and the chemical power supply. The flexible photovoltaic integrated power supply system provided by the invention has the advantages of good flexibility, light weight, high intensity, good environment tolerance and the like.

The invention discloses a method and a device for recovering cadmium and nickel from waste nickel cadmium cells and preparing the cadmium and the nickel into metal cadmium ingots and superfine nickel powder. The method is mainly characterized in that: firstly, the waste nickel cadmium cells are simply disassembled; secondly, the waste nickel cadmium cells are placed into a sealed high-temperature furnace, are distilled, condensed and recovered to obtain the metal cadmium ingots; thirdly, residual materials are leached out by a sulfuric acid and hydrogen peroxide system; fourthly, after iron removal for a leaching solution, P507 is used for extracting and separating the nickel and cobalt; and fifthly, hydrazine hydrate is used for reducing nickel raffinate, and the superfine nickel powder is prepared. The method can make the cadmium recovery rate in the waste nickel cadmium cells be more than 99.5 percent, the purity of the metal cadmium ingots be more than 99.9 percent, the recovery rate of the nickel be more than 97.5 percent, and the purity of nickel powder be more than 99.8 percent.

The invention provides a resource recycling production method of waste nickel cadmium batteries, relating to a physical separation method for the various components of the waste nickel cadmium battery, including a shell, an electrolyte, a positive plate, a negative electrode material and a negative electrode electricity collecting body perforated steel ribbon, and a recycling scheme of a pure electrode material obtained by separation; and the method provides a low-cost way for resource recycling production of the waste nickel cadmium battery. Concretely, all the components of the waste nickel cadmium battery are separated by the physical method at first, then the obtained positive plate and negative electrode powder are chemically treated to prepare new positive electrode material Ni(OH)2 and negative electrode material Cd(OH)2 of the nickel cadmium battery, and then the commercialized nickel cadmium battery production line is used for producing new nickel cadmium batteries.

An automatic variable speed charger of nickel- cadmium and nickel-hydrogen cell series type consists of shell for containing charging component, charging groove for laying cells to be charged, converter for converting AC to be DC to provide DC power for charging and providing reference voltage to charging control unit, time control unit for controlling on-off state of each independent switch, cell number and voltage detection unit for detecting cell voltage and cell number, voltage and current regulation unit for controlling charge voltage and charge current as well as charge time.

Methods of manufacturing a rechargeable power cell are described. Methods include providing a slurry, paste, or dry mixture of negative electrode materials having low toxicity and including dispersants to prevent the agglomeration of particles that may adversely affect the performance of power cells. The methods utilize semi-permeable sheets to separate the electrodes and minimize formation of dendrites; and further provide electrode specific electrolyte to achieve efficient electrochemistry and to further discourage dendritic growth in the cell. The negative electrode materials may be comprised of zinc and zinc compounds. Zinc and zinc compounds are notably less toxic than the cadmium used in nickel cadmium batteries. The described methods may utilize some production techniques employed in existing NiCad production lines. Thus, the methods described will find particular use in an already well-defined and mature manufacturing base.

The invention discloses a complete set of technique which can extract cadmium and produce ferronickel alloy from waste nickel to cadmium cell. The invention crushes the waste nickel to cadmium cell and then put the waste nickel to cadmium cell into a low temperature roasting kiln to carry out preroast, and the roasted materials and the reducing agent are mixed to conduct vacuum distillation to collect the product of cooling section and after refining, excellent cadmium is produced; the materials that are not vaporized can produce ferronickel alloy after being refined. The invention realizes the separation and exaction of cadmium and ferronickel in the waste nickel to cadmium cell; wherein, the cadmium recycle ratio with the high efficiency cadmium recycle technology can reach 99.8 percent, and the cadmium purity is more than 99.9 percent. Metal cadmium is completely recycled, thus the waste is fully used and no secondary pollution is formed and considerable economic benefit and good social benefit are created.

The invention relates to a sealed alkali nickel-cadmium secondary cell which comprises a positive plate, a negative plate, alkaline electrolysis liquid, a compartment sheet, a steel housing and a combination capping, wherein the negative electrode includes CdO active compound, conductive agent, binding agent and addition agent, the conductive agent comprises at least one of Cd, Ni(OH)2, Ni, acetylene black, graphite powder, zinc powder, cobalt-zinc alloy powder, cobalt powder, CoO, Co2O3, Co(OH)2 and Co(OH)3, the binding agent includes at least one selected from PTFE, CMC, MC, PVA, SBR, the addition agent is hydrogen storing alloy, whose proportion in the total negative electrode active material is between 1-30wt%.

The invention relates to a nickel-cadmium battery helium mass spectrometer leak rate test method, and belongs to the technical field of nickel-cadmium batteries. The nickel-cadmium battery helium mass spectrometer leak rate test method is characterized in that the helium mass spectrometer leak rate test is adopted. During the test process, after a nickel-cadmium battery cell is sealed, the nickel-cadmium battery cell, qualified for chemical leak detection test, is placed in a closed tank. After that, the helium gas is filled into the closed tank. When the pressure inside the closed tank is constant, the timing is started. After that, the closed tank is placed in a detection chamber of a system. When the vacuum degree inside the detection chamber reaches the specified requirement, a check valve is opened. By means of a helium mass spectrometer leak detector, the overall leak rate of the nickel-cadmium battery cell is quantitatively detected. The nickel-cadmium battery helium mass spectrometer leak rate test method is simple in operation, convenient in test, accurate in data, high in test level and high in reliability. Therefore, the nickel-cadmium battery can be effectively and quantitatively detected.

The invention discloses a method for predicting storage battery faults, and belongs to the field of storage battery fault prediction and diagnosis. The method is characterized in that whether a battery is broken down is predicted according to related data during the battery use process; according to the knowledge-based method for predicting the health status of the storage battery, namely, a fuzzy prediction method, degrees of membership of various faults are solved according to degrees of membership of certain symptoms and used for representing tendency of various faults, and scientific basis is provided for predicting the health status of the storage battery; and the method is proposed in order to effectively predict the faults of the battery and a battery pack, experimental data is obtained with a nickel-cadmium battery serving as an experimental subject, the DOH (degree of health) of the battery or the battery pack in the whole operation process can be obtained through analysis and processing for real-time data of the nickel-cadmium battery, and simultaneously maintenance information of the battery is given. The method is simple and effective, the disassembly and the discharge testing of the battery are avoided, and the accurate battery health level is obtained.

The invention discloses a composite membrane for an exhaust-type square nickel-cadmium battery and a preparation method of the composite membrane. The composite membrane is in a three-layer membrane composite structure composed of an upper surface layer, a lower surface layer and a middle core layer, wherein the core layer is a polypropylene microporous membrane or polypropylene melt-blown fabric with a micropore structure; the surface layers are polyolefin fiber nonwoven fabric; the polyolefin fiber nonwoven fabric is made of a composite fiber with a skin-core structure; the core layer is made of polypropylene; the skin layer is made of polyethylene; the surface layers and the core layer of the composite membrane are thermally bonded together through the polyethylene of the skin layer of the polyolefin fiber nonwoven fabric; and the thickness of the composite membrane is 0.15-0.5mm. The composite membrane has the advantages that (1) by the three-layer composite membrane structure, the battery assembly process becomes simple and feasible, and dislocation and creases of the surface layers and the core layer are avoided; and (2) the polypropylene microporous membrane or the polypropylene melt-blown fabric of the core layer has the micropore structure; internal surface carboxyl, internal surface carboxyl and/or sulfonyle hydrophilic functional groups are provided through radiation grating; and the composite membrane has permanent hydrophilicity and micro-ventilating function.