A method for renovation of a consumed anode in a metal-air cell without dismantling the cell according to embodiments of the present invention comprising circulating electrolyte through the cell to evacuate used slurry from the cell, circulating electrolyte with fresh slurry into the cell and allowing sedimentation of the fresh slurry inside the cell to form an anode and compacting the slurry to reduce the gaps between its particles. A meta-air cell enabling renovation of a consumed anode without dismantling the cell defining first outer face of the cell, air cathode layer adjacent the porous wall, separator wall disposed on the inner face of the air cathode layer, cell space volume to contain electrolyte and metal granules slurry, current collector layer to form an anode, made of current conductive material disposed in the space and flexible wall defining a second outer face of the cell wherein the flexible wall is adapted to be pushed towards inside of the cell subject to pressure applied to its outer face, thereby to reduce the volume of the space.

A nonaqueous secondary battery includes an ion supply unit which supplies ions identical to ions in an electrolyte into the electrolyte at a reaction potential higher than the uncharged potential of a positive electrode. The ion supply unit includes an ion supply source which elutes the ions into the electrolyte by being in contact with the electrolyte in a state of being electrically connected to the positive electrode, and a first covering portion which covers at least a part of the ion supply source. Then, the first covering portion maintains the ion supply source and the positive electrode in an electrically disconnected state by being interposed between the ion supply source and the positive electrode, and is dissolved or disappears at the reaction potential.

A lithium-ion battery cell includes at least two working electrodes, each including an active material, an inert material, an electrolyte and a current collector, a first separator region arranged between the at least two working electrodes to separate the at least two working electrodes so that none of the working electrodes are electronically connected within the cell, an auxiliary electrode including a lithium reservoir, and a second separator region arranged between the auxiliary electrode and the at least two working electrodes to separate the auxiliary electrode from the working electrodes so that none of the working electrodes is electronically connected to the auxiliary electrode within the cell.

The invention relates to a starved metal hydride battery. The battery is characterized in that the battery further comprises adding of oxygen gas or hydrogen gas or hydrogen peroxide or a combination thereof in order to rebalance the electrodes and replenish the electrolyte by reactions with the electrode materials.

Embodiments of the present application disclose a battery repair method and apparatus, and relate to the battery field, so as to improve a battery repair effect. The method includes: determining, by a power system, a failure mode of a battery according to an abuse record of the battery or a performance parameter of the battery, where the abuse record includes a usage record of a situation in which a preset usage range of the performance parameter of the battery is exceeded, and the performance parameter of the battery is used to represent performance of the battery; determining, by the power system according to the failure mode of the battery, a power repair policy for repairing the battery; and repairing, by the power system, the battery according to a selected power repair policy. According to the method, a failing battery can be repaired.

An analysis device determines, by the Maharanobis-Taguchi system using a plurality of explanatory variables, to which of a first group and a second group a module representing a nickel metal hydride battery will belong when the module is subjected to capacity restoration processing, the first group being defined as a group of modules of which battery capacity is lower than a reference capacity, the second group being defined as a group of modules of which battery capacity is higher than a reference capacity. The plurality of explanatory variables include a plurality of feature values extracted from a Nyquist plot of the module. The plurality of feature values include at least two AC impedance real number components plotted in a semicircular portion, at least two AC impedance imaginary number components plotted in the semicircular portion, and at least one AC impedance imaginary number component plotted in a linear portion.

The invention relates to a lithium ion battery with a high capacity retention rate, and a preparation method and charging and discharging methods thereof. The lithium ion battery comprises a positive electrode plate, a negative electrode plate, separators arranged between the positive electrode plate and the negative electrode plate at intervals, and an electrolyte, and further comprises a third electrode and a fourth electrode, which are independent of each other and provided between the positive electrode plate and the negative electrode plate, wherein the third electrode and the fourth electrode are separated by means of a single-layer separator, a metal lithium electrode being used as the third electrode, and an activated carbon electrode being used as the fourth electrode. The third electrode and the fourth electrode cooperate with each other to realize supplementation of active lithium of a lithium ion battery at different stages by means of controlled use at different stages, thereby achieving repair and regeneration of the lithium ion battery, and finally, comprehensively increasing the long-cycle capacity retention rate of the current lithium ion battery, especially a solid-liquid lithium ion battery, and increasing the cruising ability retention rate of an electric vehicle.

The present disclosure pertains to motion-generating particles for desulfation of lead-acid batteries, lead-acid batteries including such motion-generating particles, and methods of making and using the same. For example, the present disclosure provides a lead-acid battery including one or more electroactive plates disposed within a casing; an electrolyte disposed within the casing and surrounding the electroactive plates; a plurality of ferromagnetic particles disposed with the electrolyte within the casing; and one or more electromagnets. The one or more electromagnets may be configured to direct a magnetic field towards the electrolyte to selectively cause movement of the plurality of ferromagnetic particles so as to agitate the electrolyte.

A method for regenerating a lithium secondary battery including a lithium resupply step in which a lithium resupply electrode is provided in the secondary battery, and the positive electrode is set as a counter electrode, and the lithium resupply electrode is set as a working electrode to charge lithium ions to the positive electrode through the lithium resupply electrode and a negative electrode discharging step in which, after the lithium ions are resupplied to the positive electrode through the lithium resupply step, the lithium resupply electrode is set as the counter electrode, and the negative electrode is set as the working electrode to completely discharge the negative electrode up to a discharge limit.

A main object of the present disclosure is to provide a composition capable of conveniently feeding carrier ions which contribute to charge and discharge. The present disclosure achieves the object by providing an electrolyte solution-containing liquid composition for use to feed carrier ions to a non-aqueous electrolyte secondary battery, the electrolyte solution-containing liquid composition comprises a liquid composition including a solvent and a dissolved substance; and an electrolyte solution, a content of the electrolyte solution in the electrolyte solution-containing liquid composition is 30% by volume or more and 50% by volume or less, the solvent includes 1,2-dimethoxyethane, the dissolved substance includes an ionic compound, the ionic compound is composed of a radical anion of an aromatic compound and a metal cation, the aromatic compound is polyacene or polyphenyl, and the metal cation being an ion of the same type as the carrier ions.