14results about "Accumulators with bipolar electrodes" patented technology

The invention relates to a battery and an energy storage device. The battery comprises at least two frames which are sequentially stacked and connected along a first direction; the two end plates are connected to the two opposite sides of the at least two frames in the first direction respectively, and a closed space is defined by the two end plates and all the frames; the at least two polar plates and the at least one partition plate are located in the closed space and alternately stacked in the first direction, and the at least two polar plates are fixed to the at least two frames in a one-to-one correspondence mode; the first elastic piece and the second elastic piece are configured to be elastically deformable in the first direction; wherein at least one frame is in elastic sealing connection with the adjacent frame and / or the adjacent end plate through a first elastic piece, and each end plate is in elastic connection with the adjacent polar plate through a second elastic piece. The problems that the internal resistance of the battery is rapidly increased and the battery capacity and the large-current discharge capacity are reduced due to the falling of the positive electrode active layer can be avoided.

A static battery with a non-conductive elastomeric or thermoplastic housing. The battery-housing is adapted to receive at least one anode assembly, at least one cathode assembly, and at least one bipolar electrode assembly. At least the bipolar electrode assembly is formed from a conductive plastic resin that is formed as a CPE sheet. A carbon material is affixed to the CPE sheet to form the bipolar electrode. The at least one cathode assembly, the at least one anode assembly and the at least one bipolar electrode assembly are received into the battery box such that a liquid and / or gas seal is formed between electrode assemblies. The battery housing has slots into which the electrode assemblies are received. When the electrode assemblies are received into the housing, cells are formed by the cooperation of the electrode assemblies and the battery housing. The cells are then filled with electrolyte such as zinc bromide and a lid is placed on the battery- box. Once sealed the battery box is a liquid tight container for the battery.

The invention relates to the technical field of energy storage batteries, in particular to an internal structure of an energy storage battery. The double-negative electrode structure comprises two negative electrode plates, two insulating diaphragms and a positive electrode plate; the double-positive-electrode structure comprises two positive electrode plates, two insulating diaphragms and a negative electrode plate. Compared with the prior art, the energy storage battery has the advantages that the energy density of the energy storage battery is effectively improved in a manner that one positive electrode plate is used for clamping two negative electrode plates, and one negative electrode plate is used for clamping two positive electrode plates, so that the energy storage battery can contain more electrons compared with a traditional energy storage battery.

An electrochemical device and an electronic device comprising the same. The electrochemical device comprises at least one bipolar current collector (10) sealedly connected with an outer package (20), forming two independent sealed cavities on both sides of the bipolar current collector (10), each of which comprises an electrode assembly (30) and an electrolyte, one side of the bipolar current collector (10) is electrically connected with the outermost positive electrode tab of the adjacent electrode assembly (30), and the other side of the bipolar current collector (10) is electrically connected with the outermost negative electrode tab of the adjacent electrode assembly (30). Through the introduction of the bipolar current collector (10) and the sealed design of the bipolar current collector (10) and the inner layer of the outer package (20), the ion insulation between the multiple electrode assemblies (30) is realized, and the reliability of the high-output voltage battery and the effective output of the electric energy are realized.

Lead-acid batteries or cells, electrodes and bipolar plates for the same, and methods of manufacturing the same are provided. The lead acid batteries comprise a positive and / or negative electrode having a specific pore size diameter distribution. The pore size diameter distribution may comprise: a ratio of a volume of pores having a pore size diameter greater than 20 μm to a total pore volume of at least 15%; or a volume of pores having a pore size diameter greater than 20 μm of at least 0.020 ml / g.

Provided is a bipolar lead-acid battery relating to the technical filed of battery. The bipolar lead-acid battery includes a housing (1) with a battery cavity (11a) inside and a plurality of single cells (2) provided in the battery cavity (11a), each of the single cells (2) has an inner cavity (21) for electrolyte injection, and the inner cavity (21) of each single cell (2) is independent of one another, and the housing (1) has a plurality of air-distributing chambers (12a) communicating with the inner cavity (21) of the each of the single cells (2) in one-to-one correspondence above the battery cavity (11a), wherein the housing (1) further has a common pressure chamber (14a), the air-distributing chambers (12a) communicate with the common pressure chamber (14a) through vents (13a), respectively. The bipolar lead-acid battery has the advantages that it can be successfully manufactured and can be used normally, and solves the problems of short service life and unsuccessful manufacture of the existing battery.

Articles and methods related to the use of fiber webs comprising glass fibers in electrodes of batteries such as lead acid batteries are generally described. An electrode media provided herein may comprise a fiber web comprising glass fibers of different types. Electrode media provided herein may be configured to be pasted in order to produce an electrode or battery plate. In some embodiments, an article comprising a lug attached to an electrode media is provided. The electrode media described herein may be associated with good electrical, mechanical, and / or thermal performance properties that contribute to their utility in lead acid batteries.

The invention relates to a battery and an energy storage device. The battery comprises a plurality of single batteries, and the single batteries are sequentially stacked in a preset direction to form a battery module; wherein the charging cut-off voltage of each battery monomer is smaller than the positive and negative electrode gassing voltage of the battery monomer. Thus, the charging cut-off voltage of each battery monomer is kept to be smaller than the gassing voltage of the positive electrode and the negative electrode, so that each battery monomer is in an efficient charging and discharging state of 90% or above in the whole charging period, the problems of thermal runaway and thermal deformation of the battery, oxidation loss of a positive electrode current collector and the like are solved, and the service life of the battery is greatly prolonged.

The invention relates to an active substance modification method, a bipolar plate, a lead-based battery and an energy storage device. The active substance modification method comprises the following steps: mixing a raw material to be modified with modified graphite powder to form a mixture, and adding a plurality of impact balls; a high-speed stirring device is used for stirring the mixture, and under the high-energy impact of the impact balls, particles of the lead sulfate generate cracks and molecular lattices generate lattice distortion, so that fine particles of the graphene can enter the particle cracks and the molecular lattices of the lead sulfate. As fine particles of graphene exist in particle cracks and molecular lattices of the modified lead sulfate, the modified lead sulfate has good conductivity and continuously keeps good conductivity during charging and discharging, good conductivity and excellent activity can be ensured even if the proportion of the lead sulfate in a positive active material or the positive active material is 100%, and the positive active material can be applied to the field of lithium ion batteries. The specific capacity and the specific power of the lead-based battery are greatly improved, irreversible sulfation of a polar plate is prevented, and the service life is prolonged.

Equipment and a machine and a process for continuously casting strips of battery foils and / or strips of battery grids. The battery foils and grids are composed of lead or a lead alloy material. The foils, in particular, can be employed as current collectors in bipolar batteries. The machine, per an implementation, has a mold ring, a movable belt, one or more rollers, and one or more shoes. The mold ring rotates and has a mold cavity. The mold cavity can establish foil molds or grid molds. The movable belt moves about the roller(s) with a face in confrontation with the mold ring. The shoe(s) urges the movable belt into engagement with the mold ring. Liquid lead is delivered to the mold cavity adjacent the location in which the movable belt engages the mold ring amid use of the machine.

A lead acid battery management system (BMS) for a battery system comprising a plurality of battery packs of at least one lead acid battery, the battery management system comprising: at least one control device configured to electrically integrate and isolate each of the batteries from a battery string; and a controller configured to control the control device to independently control charging and discharging of each of the batteries. In some cases, the controller is configured to: determine an input power available to charge the battery system; determining, based on the determined input power, that at least one of the battery packs of batteries is chargeable above a charge threshold; and selectively charging at least one of the battery packs of at least one battery. In some cases, the BMS is configured to independently overcharge the battery. In some cases, the BMS is configured to modify the discharge of the at least one battery based on the determined charge characteristic.

The invention discloses an automobile lead storage battery adopting a bipolar plate structure and a preparation method of the automobile lead storage battery, and relates to the technical field of lead storage batteries. The preparation method comprises the following steps: carrying out dilute sulfuric acid etching and polyaniline electrochemical deposition on a Pb-Sn alloy substrate to construct a conductive and corrosion-resistant bipolar plate structure, coating negative and positive active slurry, drying, and carrying out processes of diaphragm, series assembly, electrolyte injection, formation and activation treatment and the like to finally obtain the bipolar plate battery with excellent performance. The current path is obviously shortened, the internal resistance is reduced, the specific capacity and the output power are improved, meanwhile, the material redundancy and the production cost are reduced, and the method is suitable for automobile start-stop and high-power application.