661 results about "Nickel–metal hydride battery" patented technology

The invention discloses a battery management system with balanced charge and discharge functions and a control method thereof, relating to a battery management system of a dynamic battery pack. The battery management system is structurally characterized in that a central processing unit (CPU) control unit is connected with a battery and relay set so as to detect the working condition of the battery and relay set; the CPU control unit and a balanced discharge module are successively connected with the battery and relay set so as to control the balanced discharge of the battery and the relay set; the CPU control unit, a balanced charge module and the battery and the relay set are successively connected so as to control the balanced charge of the battery and relay set; and a super-capacitor is connected with the balanced discharge module so as to store the discharge energy of the battery and relay set for supplying power for the battery management system. The battery management system can be widely applied to management of various battery packs such as a lead-acid battery, a lithium battery, a nickel-metal hydride battery and the like, supports the expansion of a lower computer, and can conveniently detect and monitor the conditions of multiple batteries.

A recursive algorithm is provided for adaptive multi-parameter regression enhanced with forgetting factors unique to each regressed parameter. Applications of this algorithm can include lead acid batteries, nickel-metal hydride batteries, and lithium-ion batteries, among others. A control algorithm is presented, having an arbitrary number of model parameters, each having its own time-weighting factor. A method to determine optimal values for the time-weighting factors is included, to give greater effect to recently obtained data for the determination of a system's state. A methodology of weighted recursive least squares is employed, wherein the time weighting corresponds to the exponential-forgetting formalism. The derived mathematical result does not involve matrix inversion, and the method is iterative, i.e. each parameter is regressed individually at every time step.

A backup power supply is so constructed that it is provided with multiple DC backup power supplies 111 to 11N, each containing nickel-metal hydride battery, stored upright on the bottom of the disk array unit 100; cooled by cooling air through the vents 1011 for ventilation from the bottom to the top; and connected with the output of the AC/DC converters 121, 122 with the backboard 151. Very compact disk array unit with an uninterruptible power supplying function can be realized.

A nickel-metal hydride storage battery comprising a positive electrode containing nickel hydroxide, a negative electrode containing a hydrogen absorbing alloy, an alkaline electrolyte, and an alkali conducting separator provided between the positive electrode and the negative electrode. The alkali conducting separator may be a solid alkali metal ion super ion conducting material, wherein the alkali metal is Na, K, or Li

The invention relates to a method for preparing multi-layer graphene, and belongs to the technical field of carbon materials. The multi-layer graphene is prepared from expanded graphite serving as a raw material through ultrasonic dispersion, solid-liquid separation and drying. The thickness of the multi-layer graphene prepared by the method is between 1 and 10nm; the number of layers is between 2 and 20 layers; and the aperture is mainly between 6 and 50nm. The multi-layer graphene has the characteristics of high electrical conductivity, high heat conductivity, high electromagnetic wave absorptivity, wear resistance and the like. The method has the advantages of simpleness, convenient operation and low production cost, capability of reducing production energy consumption, no three wastes emission, environmental friendliness and convenient popularization and application. The multi-layer graphene prepared by the method can be used as the electrode materials of batteries and super capacitors, can also be used as the conductive agents of high molecular materials, ceramic materials, silicate materials and the like, and can also be used as the conductive agents of lithium batteries, alkaline batteries and nickel-metal hydride batteries.

The invention discloses a composite battery comprising a battery shell, wherein a positive terminal and a negative terminal are arranged on the battery shell; a matrix battery, a super capacitor and a voltage-sharing circuit board are also arranged in the battery shell; the matrix battery, the super capacitor and the voltage-sharing circuit board are in parallel connection and form electric connection; a positive terminal and a negative terminal on the voltage-sharing circuit board are respectively electrically connected with the anode and the cathode of the super capacitor; the anode and the cathode of the matrix battery are correspondingly and electrically connected with the positive terminal and the negative terminal on the battery shell; and the matrix battery can be a lead-acid battery, a lithium ion battery or a nickel-metal hydride battery. The composite battery has the advantages of high energy and power, low temperature resistance, matrix battery protection, long service life, energy recovery, energy saving and emission reduction, and resource saving, and is applied to electric starting systems, electric drive systems, uninterruptable power output, the starting of tractors and the recovery of the brake energy of motor vehicles. The preparation method has the advantages of simple process and low cost and is suitable for preparing the composite battery of industrial production.

One embodiment of the present invention sets forth a digital camera configured to be powered by rechargeable nickel-metal hydride (NiMH) batteries. The digital camera includes one or more rechargeable NiMH batteries, and first internal circuitry configured to receive power from a universal serial bus (USB) port associated with an external power source and to charge the rechargeable NiMH batteries without removing the rechargeable NiMH batteries from the digital camera.

This invention discloses a method to make a positive electrode and the nickel hydride battery using same. The positive electrode at least comprises a nickel hydroxide plus 1-15 wt. % of fine additive powders selected from the group consisting of Co/CoO, Ni, Cu, Zn, ZnO, C, Mg, Al, Mn, silver oxide, hydride, conductive polymer, and combinations thereof. Said positive electrode further comprises one, two or more additives, 0.01-10 wt. %, selected from the group of MgCl2, CaCl2, SrCl2, SrF2, BaCl2, BaF2, MgF2, and other fluorides/chlorides of alkali metals, alkaline earth metals, Al, Y, Sn, Sb, Ag, transition metals, rare earth metals, and composite metal oxide/halide to improve the performance of said positive electrode at high temperature.

The invention provides a microgrid nickel-metal hydride battery energy storage system. A plurality of nickel-metal hydride battery cupboards which are electrically connected in parallel, a parallel connection control cabinet, an energy conversion system, an alternating-current distribution cabinet and the mains supply are electrically connected in sequence in a bidirectional mode. The alternating-current distribution cabinet is further electrically connected with an electrical load side in a unidirectional mode and also electrically connected with a charging / discharging machine in a bidirectional mode. A battery management system is connected with an energy management system, the nickel-metal hydride battery cupboards, the parallel connection control cabinet, the energy conversion system and the charging / discharging machine in a bidirectional mode. The alternating-current terminal of the energy conversion system is connected with the mains supply through the alternating-current distribution cabinet. According to the microgrid nickel-metal hydride battery energy storage system, large-scale parallel connection of the battery cupboards can be realized by means of coordinated management and control of the parallel connection control cabinet and the battery management system, and the safety and reliability problems that a single battery is low in capacity and is difficult to apply in a large-scale parallel connection mode, maintain in an equalized mode, and utilize with high efficiency are well solved.

The invention discloses a super-wide-temperature-range nickel-hydrogen battery. The battery comprises an iron shell as well as a nickel electrode, a hydrogen electrode, a diaphragm and an electrolyte solution mounted in the iron shell, wherein the nickel electrode takes foam nickel as a substrate material; the space in foam nickel is filled with a positive electrode active substance Ni(OH)2, a conductive agent, an additive and a binder; the hydrogen electrode takes a porous nickel-plated steel belt, a copper net or foam nickel as a substrate material; the porous nickel-plated steel belt, the copper net or foam nickel is coated with a negative electrode active substance, namely, hydrogen storage alloy powder, the conductive agent, the additive or the binder; and the electrolyte solution is a mixture of a potassium-rich alkaline aqueous solution and sodium tungstate or tungstic acid crystals. The invention furthermore discloses a manufacturing method for the super-wide-temperature-range nickel-hydrogen battery. According to the super-wide-temperature-range nickel-hydrogen battery disclosed by the invention, the ratio of 0.2C discharge capacity to normal-temperature capacity maximally can reach 70-80% in an environment with the temperature of -45 DEG C; and the ratio of 0.2C discharge capacity to normal-temperature capacity of the nickel hydrogen battery maximally can reach 85-95% in an environment with the temperature of 70 DEG C. Moreover, the manufacturing method is simple and suitable for large-scale production.

The invention provides an electronic seeing-eye dog robot which is composed of a mechanical portion and an electronic portion. The mechanical portion comprises a vehicle body, a steering engine, a steering engine connecting mechanism, a direction wheel, an orientation wheel, a rotational joint, a hand pushing rod and an antenna mast. The electronic portion comprises an infrared sensor array, a voice module, a photoelectric switch, a geomagnetic sensor, an accelerometer module, a remote control receiving circuit, a central processing unit, a circuit base plate, a voltage stabilizer, a serial port circuit, a GPS module, a loudspeaker, a nickel-metal hydride battery, a remote controller, a camera and a GPS signal receiver. Autonomous navigation can be carried out through satellite positioning, course correction, posture detection and sidewalk line searching, the operation is carried out through remote control, related navigation information is broadcast through voice, the robot can automatically walk around a barrier, and the navigation service can be provided for a blind person or a visually-impaired person in the outdoor environment.

This invention relates to a method for recovering positive and negative materials from waste pole plates including a high temperature method and a specific gravity method, in which, the high temperature method includes putting the waste positive and negative pole plates under high temperature to dissolve the PVDF and break the positive and negative materials from the matrix and separate them from the conduction agent, then separating the PVDF with water, which applies a physical method to recover the materials and does not change the physical and chemical targets of the materials.

The invention relates to a preparation method of transition metal phosphide Co2P, which includes the following steps that: (1) cobalt salt and hypophosphite as mixing precursors are dissolved in deionized water, and are stirred until the cobalt salt and the hypophosphite are completely dissolved; (2) the produced precursor solution is dried; (3) the dried precursor powder is loaded into a tube furnace, and is calcined under the argon atmosphere; (4) the precursor powder is cooled to the room temperature, the produced product is washed by deionized water and then dried under vacuum, and thereby the transition metal phosphide Co2P is produced. The invention has the following advantages that: the sources of the main materials needed by preparation are rich, the prices are low, and therefore the cost is low; the technique is simple, steps, such as high temperature and high pressure and temperature programming, are not needed, consequently, the preparation flow is simplified, and energy consumption is reduced; in the process of preparation, the environment cannot be polluted, and therefore the invention is suitable for mass production; and when being used for simulating the nickel-metal hydride battery, the prepared product can show good electrochemical invertibility.

A method of starting a nickel metal hydride battery in cold weather. The method includes the step of discharging the battery through a short circuit.

The invention is about Mg-base hydrogen storage material and the method of the procedure. It has the chemical composition of Mgp-xMxNi-yNy-NieBf, M has the alternative of Al, Mn, Sn, Ca, Li, B, Na, B, Na, K, La, Ce, Nd, Pr, Y and misch metal. N has the alternative of V, Cu, Ti, Co, Fe, Ag, Cr, Zr, Se, Nb, Mo, W, Nb, C, Si and Sn, 1.0 <=p<=2.5, 0<=x<=1.0, 0<=y<=0.8, 1<=e<=3, 1<=f<=3. It has a good property under normal temperature and pressure, the electric pole that made by it has a high galvano-chemistry capability and cycle life. Its advantages include stable property; low price; extensive use of Ni-H battery, H accumulator, H power auto and fuel battery.

A bipolar battery comprising bipolar electrodes. The bipolar electrodes including corrugated bipolar substrates. The corrugated bipolar substrates may be formed as corrugated foils. The battery may be a nickel metal hydride battery.

A method for resource-separating and circulating-producing the waste and old nickel-hydrogen battery component relates to a method for physically separating various components comprising casing, electrolyte, positive electrode material, negative electrode material, adhesive and negative electrode collector perforated steel ribbon in the waste and old nickel-hydrogen battery, and a plan for separating the obtained pure electrode material for recycling, and the invention provides a low-cost route for the resource and circulating production of the waste and old nickel-hydrogen battery. The physical separating route is defined in the chart. The positive plate obtained by separation can be converted to the positive electrode material which can be used for the production of the new battery with a chemical method; the negative electrode material which can be used for the production of the new battery is obtained by washing, adjusting the metal proportion, smelting, grinding and filtering to the hydrogen storage alloy thereby completing the circulating production of the nickel-hydrogen battery.

The invention relates to a preparation method of an asymmetric rare earth capacitor battery, and belongs to the field of water power battery. The method comprises the steps that: positive electrode and negative electrode battery slurries and a capacitor slurry are prepared; the positive electrode slurry is coated on foamed nickel, such that a positive electrode is prepared; bake-drying, rolling, powder removing, welding, and longitudinal and transverse cutting are carried out, such that a positive electrode sheet is prepared; the positive electrode sheet is packaged by using a separation film bag; the negative electrode slurry is coated on foamed nickel, and the materials are bake-dried; the capacitor slurry is coated on the material, and secondary bake-drying, rolling, powder removing, welding, and longitudinal and transverse cutting are carried out, such that a negative electrode sheet is prepared; the positive and negative electrode sheets are stacked, such that a battery core is prepared; the battery core is placed in a housing, and welding, top cover sealing, and liquid injection are carried out; and series connection formation is carried out, such that the battery is prepared. According to the invention, laminated coating is adopted in preparing the negative electrode sheet, such that the capacitor material is completely effectively combined with the battery material, and the integration of the positive and negative electrode sheets and the conductive lugs is realized. The battery has the advantages of high safety, environment friendliness, and low cost. The battery has both the energy density advantage of a nickel-metal hydride battery and the power density advantage of an asymmetric supercapacitor, such that operation conditions for electric vehicle and the like can be achieved.