摘要:
Temperature-sensitive thermal insulators for batteries are provided for. The thermal insulators are fabricated from barrier film and have one or more expandable chambers containing a fluid. The fluid has a vaporization temperature of from about 90.degree. F. to about 200.degree. F., preferably from about 100.degree. F. to about 130.degree. F. The insulator has a first volume above the fluid vaporization temperature which is greater than a second volume of the insulator below the fluid vaporization temperature.
摘要:
A method and apparatus is disclosed for charging lead-acid batteries which comprises periodic voltage sweeps to determine the charging voltage that should be used for the battery and then adjusting the charging voltage in accordance with that voltage sweep information so as to ensure that a highly efficient charging process is achieved which avoids undue gassing and inherently compensates for factors such as the temperature, type and service life history of the battery and resistance due to the interactive nature of the technique and apparatus. One suitable technique for analysis and adjustment of the voltage sweep data involves analyzing the slope of the current versus the voltage sweep curve so as to determine certain slope values or changes in values.
摘要:
A continuous method for making starting, lighting and ignition lead-acid battery positive plates and the resulting battery is disclosed which utilizes a direct cast alloy strip wherein the alloy consists essentially of lead, from about 0.02 to 0.05% calcium, from about 0.3 to about 0.5% tin, and from about 0.02 to 0.05% silver, the percentages being based upon the weight of the alloy strip, as well as related alloys utilizing calcium and strontium or strontium in place of calcium.
摘要:
A lead-acid battery with a charge capacity indicator comprises a sensor that includes a reversible electrode, such as PbO.sub.2, as a reference electrode that does not participate in the battery charge and discharge reactions, and the voltage is measured between the reference electrode and the negative plates, for example, by using the negative terminal.
摘要:
A method of assembling a bipolar battery, most preferably a lead-acid battery, includes assembling the electrochemical components necessary to provide the necessary voltage and capacity, maintaining the electrochemical components under the desired compression and then sealing such electrochemical components as a unit utilizing various assembly components. The resulting bipolar battery in the preferred embodiment includes an electrolyte fill/vent box that seals the top of the electrochemical component unit and a vacuum box that seals the bottom surface.
摘要:
A method of fabricating a modular, recombinant lead-acid battery is provided for. The method includes providing a plurality of thermoplastic frames, including at least two frames which support electrochemically active plates. The frames are adapted to be stacked and welded together such that the plates are spaced apart from each other a predetermined distance. One or more separators also are provided. The separators have an uncompressed state in which their thickness is equal to or greater than the predetermined distance between plates and a compressed state. The frames and separators are stacked such that a separator is disposed between adjacent plates in its compressed state. The frames then are successively vibration welded together, again while the separator is in its compressed state. The separator has a predetermined thickness in its compressed state effective to reduce damage to the separator caused by abrasion of the separators by the plates during vibration welding. The separator also tends to assume its uncompressed state in the presence of electrolyte so that the separator contacts the plates upon completion of the battery.
摘要:
A bipolar lead-acid is disclosed in which a conductive metal substrate is used for the bipolar plates which may comprise either a multi-layer metallic substrate defined as C/A/B/D, layer C having a layer of positive active material adhered thereto and layer D having a layer of negative active material adhered thereto, C can be lead or lead alloy or a conductive tin, titanium dioxide or ruthenium oxide, A is titanium or tin, B is copper or tin, and D is lead, a lead alloy or tin, or a conductive metal substrate-fiber or mesh composite in which the fiber may be glass fibers or the like. A preferred embodiment provides a bipolar lead-acid battery having enhanced capacity by utilizing a central bi-negative or bi-positive plate so that the capacity can be increased without increasing the size of the plates.
摘要翻译:公开了一种双极性铅酸,其中导电金属基板用于双极板,其可以包括定义为C / A / B / D的多层金属基板,具有粘附到其上的正极活性材料层的层C 和具有粘附到其上的负极活性物质层的层D,C可以是铅或铅合金或导电锡,二氧化钛或氧化钌,A是钛或锡,B是铜或锡,D是铅,铅 合金或锡,或其中纤维可以是玻璃纤维等的导电金属基材纤维或网状复合物。 一个优选的实施方案提供了一种通过利用中央双阴极或双正极板而具有增强的容量的双极铅酸电池,使得容量可以增加而不增加板的尺寸。
摘要:
This invention relates to rechargeable manganese dioxide cells (usually alkaline cells with zinc anodes or cells having non-aqueous electrolyte and lithium anodes), and particularly to the cathodes therefor. In keeping with the present invention, the cathodes are essentially unconstrained--that is, no cage is used in the cell between the cathodes and the anodes. The cathode is restricted from significantly changing its dimensions during discharge of the cell, when it is inclined to swell--as opposed to the tendency of the cathode to contract during a charge cycle. The cathode substantially fills the entire space alloted for it within the cell, with a slight accommodation for height-wise or longitudinal expansion or growth of the cathode of bobbin-type cells, or cross-wise expansion or growth of button-type cells. There may be additives in the cathode mix, including particularly conductive fibres of graphite or other conductive materials; and other materials may also be added to the cathode mix, including metallic additives. Methods of manufacture are also provided by the present invention, including compaction and recompaction of the cathode pellet, and a range of compaction pressures is suggested. Cells in keeping with the present invention are capable of exhibiting high current drain rates, and long cycle life.
摘要:
A booster battery assembly is provided, where the booster battery is intended for use to provide additional energy to vehicle batteries, while connected in parallel with such vehicle batteries, so that a sufficient source of cranking current is available. Moreover, it is important for the terminal voltage of the vehicle battery as boosted by the booster battery assembly to be about 6.0 to 8.4 volts for an average automobile in order for ignition to be initiated and maintained during cranking. The booster battery assembly is portable, or it may be permanently installed in the vehicle, but isolated from the vehicle battery. In any event, the booster battery assembly of this invention comprises a battery of the same terminal voltage as the vehicle battery but of much smaller capacity. The booster battery may be charged from the vehicle battery during a time when the vehicle alternator is operating, or it may be recharged from an AC source. It is also contemplated that the booster battery may be a one-shot, reserve type standby battery. The booster battery assembly is not intended to replicate an automobile battery, merely provide some additional starting energy to permit engine cranking and to maintain spark ignition during cranking.
摘要:
In rechargeable or primary electrochemical cells, hydrogen may evolve. The invention concerns the use of an auxiliary electrode material comprising manganese dioxide and a catalyst as the oxidant providing for the recombination of pressurized hydrogen, for example, the hydrogen being at pressures ranging from from substantially zero gauge pressure up to the relief pressure of the cell. The cell is a sealed cell having a manganese dioxide cathode, a zinc anode and aqueous electrolyte contacting both anode and cathode. The aqueous electrolyte may be alkaline or it may be ammonium chloride or zinc chloride, or mixtures thereof. The auxiliary electrode material, which may be mixed with the cathode material or be formed into a discrete auxiliary electrode, may optionally comprise a porous substrate, and in any event comprises MnO.sub.2 and a catalyst for the recombination of pressurized hydrogen with the MnO.sub.2. The substrate may be carbon black or graphite; the catalyst may be a metal, metal salt or metal oxide of elements such as lead, nickel, titanium, lanthanum, chromium, vanadium, tantalum and catalytically active alloys thereof. Most particularly, the catalyst may be silver, platinum, silver oxide, or silver dioxide.