24results 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.

The invention discloses a polar plate structure of a bipolar battery and a span bridge sealing mode, and belongs to the technical field of lead-acid storage batteries. According to the polar plate structure, by optimizing the frame design, improving the grid casting process and adopting the welding-free tab connection process, the problems of many process defects, high material consumption and high internal resistance existing in existing busbar connection are solved; according to the span bridge sealing mode, the design of a trapezoidal glue groove and accurate sealant filling are matched with continuous bending and stacking connection of the tabs, and extra butt weldments are omitted. Specifically, a pole plate frame is provided with a gradient bevel edge to optimize a current path, a grid is cast by adopting an H-shaped mold, a pole lug is prolonged, an active substance filling area is expanded, and the pole lug is bent twice to realize non-welding connection; the trapezoid glue groove is wide in top and narrow in bottom and controls the sealant filling amount. The lead-acid storage battery can reduce the lead consumption, eliminate the cold solder joint risk, reduce the internal resistance and improve the electrolyte diffusion efficiency and the assembly efficiency, and is suitable for large-scale production of the lead-acid storage battery.

The invention discloses a composite conductive substrate, a bipolar plate and a bipolar battery, and relates to the technical field of bipolar batteries, the conductive substrate is formed by stacking and combining a first current collector and a second current collector, the two current collectors are tightly attached to form a whole, and the first current collector and the second current collector are made of different metal foils; the first current collector comprises but is not limited to stainless steel foil, copper foil, aluminum foil, zinc foil and nickel foil; and the second current collector comprises but is not limited to stainless steel foil, copper foil, aluminum foil, zinc foil and nickel foil. By laminating and combining different metal foils, the problem that a single metal foil cannot meet the requirements of a bipolar battery conductive substrate on electrochemical compatibility, conductivity and mechanical property at the same time is solved; different metal foils and metal foil surface coatings (conductive layers) are respectively matched with positive and negative active materials, so that the interface side reaction is reduced, active substances are inhibited from falling off, the cycle life is prolonged, the charge-discharge power of the battery is increased, and the internal resistance of the battery is reduced.

A system to create a cell for a monopole or bipole lead acid battery includes a paster to produce wet paste, a first carrier structure to receive the wet paste, and a second carrier structure to receive an electrode substrate. A combining station combines the first carrier structure and corresponding wet paste and the second carrier structure and corresponding electrode substrate into an assembly. An ultrasonic welding system receives the assembly and provides mechanical pressure and ultrasonic energy to the assembly. A removal station via which to remove at least one of the first and second carrier structures to create a modified assembly.

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.

Various systems and methods are presented in which lead acid batteries are serviced by removal, reconditioning, and refilling reconditioned battery paste into an assembly of typically bipolar electrodes that may be retained in a reusable housing and / or compression mechanism. Preferably, such batteries will include electrodes having a layer of a Magneli phase of a transition metal suboxide to so provide enhanced electrochemical and mechanical strength, and the battery paste may further include porous particles a Magneli phase of a transition metal suboxide to so provide enhanced electrolyte performance.

To efficiently manufacture a highly durable biplate for a bipolar lead-acid battery, which is manufactured by bringing both end faces of a conductor arranged in a through-hole of a substrate into contact with a positive electrode current collector plate and a negative electrode current collector plate arranged on both sides of the substrate and joining them by a method such as resistance welding.SOLUTION: A bipolar lead-acid battery includes a substrate 121 arranged between adjacent cell members 110, the substrate 121 includes a through hole 121a in the thickness direction, a conductor 160 arranged in the through hole 121a, a positive current collector 111a that constitutes one of the cell members 110 arranged on one side of the substrate 121, and a negative current collector 112a that constitutes the other cell member 110 arranged on the other side, both end faces of the conductor 160 joined to the positive current collector 111a and the negative current collector 112a, respectively, and the positive current collector 111a and the conductor 160 are formed from a lead alloy having the same components.SELECTED DRAWING: Figure 2

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.

To keep the pressure applied from a separator to a positive electrode active material layer and a negative electrode active material layer high by controlling the density of the separator disposed between the positive electrode active material layer and the negative electrode active material layer, and improve the adhesion between a positive electrode current collector and a positive electrode active material layer, thereby delaying the decrease in capacity and extending the lifespan.SOLUTION: A bipolar storage battery includes: a positive electrode active material layer 111b; a negative electrode active material layer 112b; a current collector made of lead or a lead alloy in contact with either or both of the positive electrode active material layer 111b and the negative electrode active material layer 112b; and a separator 113 disposed between the positive electrode active material layer 111b and the negative electrode active material layer 112b facing each other and in contact with the positive electrode active material layer 111b and the negative electrode active material layer 112b. In the separator 113, a ratio of the mass of the separator 113 to the volume of a region A sandwiched between the positive electrode active material layer 111b and the negative electrode active material layer 112b is 0.215 g / cm3 or more and 0.350 g / cm3 or less.SELECTED DRAWING: Figure 3

An electrode media 201 for a lead acid battery includes a fiber web 205 comprising 15-90 wt.% of microglass fibres having an average length of less than or equal to 0.5 mm, an average diameter of 0.1

The invention discloses a bipolar tab parallel connection method of a bipolar battery and a welding tool, and belongs to the technical field of battery manufacturing. Conventional bipolar plate group single bodies are connected in series in a one-to-one mode through bipolar tabs, and due to the fact that parallel busbars do not exist and corresponding poles are lacked on the outer sides of side polar plates, charging is insufficient, and capacity fading is fast. The invention designs a tool capable of realizing local parallel welding of bipolar tabs, so that the bipolar tabs can be connected in series in a one-to-one manner and can also be connected in parallel transversely. According to the method, a bipolar plate with an edge tab structure is adopted, welding is carried out through a welding comb or a cast-weld mold with grooves in the tops of comb teeth, and the formed small busbar is low in lead consumption, does not make contact with electrolyte after being packaged and is reliable and durable. The invention solves the problem of fast capacity fading caused by insufficient charging of the bipolar battery side pole plate, and is suitable for various batteries such as lead-acid batteries, lithium ion batteries and the like.

Method for producing a stack of bipolar battery cells (1), comprising alternating stacking of - Bipolar collectors (101, 102, ...), - a first active material (121, 122, ...), - Separators (141, 142, ...) and - a second active material (161, 162, ...), so that in stacking direction R S growing bipolar battery cell stack (1) oriented in a direction perpendicular to the stacking direction (R S ) the standing expansion plane extends in a plate-like manner until a defined stacking height is reached, wherein before each stacking of a bipolar electrode unit (181, 182, ...), each formed from one of the bipolar collectors with the first active material applied on one side and the second active material applied on the other side (101, 102, ...) - Sealing material of a first sealing edge arrangement (221, 222, ...) is applied to the respective bipolar collector (101, 102, ...), - the respective separator (141, 142, ...) is inserted into the sealing material, - the sealing material over an activation period t A1 is hardened, then - Sealing material of a second sealing edge arrangement (241, 242, ...) is applied to the first sealing edge arrangement (221, 222, ...) and - the sealing material of the second sealing edge arrangement (241, 242, ...) over a period of time t compared to the activation period A1 shorter activation period t A2 is hardened, the hardening of the sealing material results in the two sealing edge arrangements (221, 222, ..., 24) 1,242, ...) to seals between the respective bipolar collectors (101, 102, ...) of adjacent bipolar electrode units (181, 182, ...) so that an electrolyte filling can be retained within the space formed by the bipolar collectors (101, 102, ...) and the respective associated seal (201, 202, ...).

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.

Provided are a control method for maintenance charging and a power storage system which can suppress the occurrence of overcharging or undercharging during recovery charging. As the maintenance charging of a storage battery, constant voltage charging is performed after constant current charging, and in the constant voltage charging, a charging rate calculated from the total charge amount and total discharge amount of the storage battery calculated from current values of the storage battery is used along with a threshold value to determine whether to continue or end the constant voltage charging on the basis of the temperature of the storage battery.

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.