5069results about "Secondary cells manufacture" patented technology

Disclosed herein is a modular battery system having at least one set of battery modules, preferably monoblock modules connected in series. Each of the battery modules may be designed with a first endplate and a second endplate, wherein each battery module is set between the first and second endplates and at least one band member couples the endplates to each other, binding the battery module between the endplates. The endplates are secured between a pair of rails and the system is disposed in a system housing. A cooling manifold provides a system wherein coolant flows into and out of each battery module. The system housing preferably has a coolant inlet and a coolant outlet. The cooling manifold is in flow communication with the coolant inlet and the coolant outlet. A battery monitoring system, which may include a battery control module and at least one remote sensing module, preferably monitors and collects performance and status information, such as voltage and temperature, of the battery modules. An integrated control unit (ICU) may be disposed in the system housing. The ICU supports electronics, some of which are used to collect electrical energy produced by the battery modules and/or monitor the system.

Disclosed are compositions and methods for alleviating the problem of reaction of lithium or other alkali or alkaline earth metals with incompatible processing and operating environments by creating a ionically conductive chemical protective layer on the lithium or other reactive metal surface. Such a chemically produced surface layer can protect lithium metal from reacting with oxygen, nitrogen or moisture in ambient atmosphere thereby allowing the lithium material to be handled outside of a controlled atmosphere, such as a dry room. Production processes involving lithium are thereby very considerably simplified. One example of such a process in the processing of lithium to form negative electrodes for lithium metal batteries.

In an electrode structure for a lithium secondary battery including: a main active material layer formed from a metal powder selected from silicon, tin and an alloy thereof that can store and discharge and capable of lithium by electrochemical reaction, and a binder of an organic polymer; and a current collector, wherein the main active material layer is formed at least by a powder of a support material for supporting the electron conduction of the main active material layer in addition to the metal powder and the powder of the support material are particles having a spherical, pseudo-spherical or pillar shape with an average particle size of 0.3 to 1.35 times the thickness of the main active material layer. The support material is one or more materials selected from a group consisting of graphite, oxides of transition metals and metals that do not electrochemically form alloy with lithium. Organic polymer compounded with a conductive polymer is used for the binder. There are provided an electrode structure for a lithium secondary battery having a high capacity and a long lifetime, and a lithium secondary battery using the electrode structure and having a high capacity, a high energy density and a long lifetime.

An electrical-energy-storage unit (EESU) has as a basis material a high-permittivity composition-modified barium titanate ceramic powder. This powder is double coated with the first coating being aluminum oxide and the second coating calcium magnesium aluminosilicate glass. The components of the EESU are manufactured with the use of classical ceramic fabrication techniques which include screen printing alternating multilayers of nickel electrodes and high-permittivitiy composition-modified barium titanate powder, sintering to a closed-pore porous body, followed by hot-isostatic pressing to a void-free body. The components are configured into a multilayer array with the use of a solder-bump technique as the enabling technology so as to provide a parallel configuration of components that has the capability to store electrical energy in the range of 52 kW·h. The total weight of an EESU with this range of electrical energy storage is about 336 pounds.

A framed lithium battery cell group includes a first frame member (20) and a second frame member (30). The frame members are locked together, clamping the lithium battery cell pack (10) on the seal edge surfaces (13, 16), thereby providing structural rigidity and protection from damage due to handling and vibration. Each of the frame members (20, 30) has multiple pins (25) and sockets (26) on the side opposite the clamping surface (33) to facilitate aligning and stacking multiple lithium battery cell pack and frame assemblies to form a lithium battery cell group (50). Each of the frame members (20, 30) include a buss bar capture feature (22, 32) having a bus bar (40) inserted therein for electrically connecting all of the terminals for a given lithium battery pack group to the buss bar (40).

A lithium/iron disulfide electrochemical battery cell with a high discharge capacity. The cell has a lithium negative electrode, an iron disulfide positive electrode and a nonaqueous electrolyte. The iron disulfide of the positive electrode has a controlled average particle size range which allows the electrochemical cells to exhibit desired properties in both low and high rate applications. In various embodiments, the iron disulfide particles are wet milled, preferably utilizing a media mill or milled utilizing a non-mechanical mill such as a jet mill, which reduces the iron disulfide particles to a desired average particle size range for incorporation into the positive electrode.

A method of manufacturing a solid electrolyte battery includes a step of thermally pressing a composite layer including a positive electrode ink layer, an electrolyte ink layer and a negative electrode ink layer that are formed by coating a positive electrode ink, an electrolyte ink and a negative electrode ink. Further, the positive electrode ink, the electrolyte ink and the negative electrode ink contain a polymer electrolyte. By this method, it is possible to improve the flow of ions across respective interlayers of a positive electrode active material layer, a solid electrolyte layer and a negative electrode active material layer.

A method for the self assembly of a macroscopic structure with a pre-formed nano object is provided. The method includes processing a nano object to a desired aspect ratio and chemical functionality and mixing the processed nano object with a solvent to form a suspension. Upon formation of the suspension, a substrate is inserted into the suspension. By either evaporation of the solvent, changing the pH value of the suspension, or changing the temperature of the suspension, the nano objects within the suspension deposit onto the substrate in an orientational order. In addition, a seed crystal may be used in place of the substrate thereby forming single-crystals and free-standing membranes of the nano-objects.

A method and apparatus for making thin-film batteries having composite multi-layered electrolytes with soft electrolyte between hard electrolyte covering the negative and/or positive electrode, and the resulting batteries. In some embodiments, foil-core cathode sheets each having a cathode material (e.g., LiCoO₂) covered by a hard electrolyte on both sides, and foil-core anode sheets having an anode material (e.g., lithium metal) covered by a hard electrolyte on both sides, are laminated using a soft (e.g., polymer gel) electrolyte sandwiched between alternating cathode and anode sheets. A hard glass-like electrolyte layer obtains a smooth hard positive-electrode lithium-metal layer upon charging, but when very thin, have randomly spaced pinholes/defects. When the hard layers are formed on both the positive and negative electrodes, one electrode's dendrite-short-causing defects on are not aligned with the other electrode's defects. The soft electrolyte layer both conducts ions across the gap between hard electrolyte layers and fills pinholes.

The present invention provides devices and structures and methods of use thereof in electrochemical actuation. This invention provides electrochemical actuators, which are based, inter-alia, on an electric field-driven intercalation or alloying of high-modulus inorganic compounds, which can produce large and reversible volume changes, providing high actuation energy density, high actuation authority and large free strain.

A battery assembly has a plurality of battery packs each presenting a housing and multiple cells adjacent one and the other and disposed in the housing. A foam solution is injected into the case of each battery pack. The foam extends around each cell and the case to encapsulate each cell thereby eliminating air gaps between the cells and the case and receiving heat generating by the cells in operational mode of the battery pack.

A method and apparatus for making thin-film batteries having composite multi-layered electrolytes with soft electrolyte between hard electrolyte covering the negative and/or positive electrode, and the resulting batteries. In some embodiments, foil-core cathode sheets each having a cathode material (e.g., LiCoO₂) covered by a hard electrolyte on both sides, and foil-core anode sheets having an anode material (e.g., lithium metal) covered by a hard electrolyte on both sides, are laminated using a soft (e.g., polymer gel) electrolyte sandwiched between alternating cathode and anode sheets. A hard glass-like electrolyte layer obtains a smooth hard positive-electrode lithium-metal layer upon charging, but when very thin, have randomly spaced pinholes/defects. When the hard layers are formed on both the positive and negative electrodes, one electrode's dendrite-short-causing defects on are not aligned with the other electrode's defects. The soft electrolyte layer both conducts ions across the gap between hard electrolyte layers and fills pinholes.

A battery module, including a plurality of unit cells and a cell barrier interposed between the unit cells, is provided. The cell barrier includes a body member and a fixing part disposed on the edge of the body member and connected to an adjacent cell barrier while housing a unit cell.

A secondary battery comprises a negative electrode and a positive electrode which oppose each other and an ion conductive member which includes a layered or columnar structure (ion channels) in its matrix and which is sandwiched between the negative electrode and the positive electrode.

A lithium secondary battery comprising an electrode in which an active material layer which includes an active material that electrochemically occludes and releases lithium is formed on a current collector, wherein cracks are formed in the active material layer by occlusion and release of lithium ions and thereafter a solid electrolyte is formed in the cracks in the active material layer.

Disclosed is a rechargeable lithium battery including an electrolyte comprising an ethylene carbonate compound represented by Formula 1, a non-aqueous organic solvent, and a lithium salt; a negative electrode including a negative active material including a silicon-included alloy and being capable of reversibly forming a compound by reacting with lithium; and a positive electrode including a positive active material comprising a compound being capable of reversibly intercalating and deintercalating lithium ions or a material capable of forming a compound containing lithium by reversibly reacting with lithium.

(wherein X and Y are each independently selected from the group consisting of a hydrogen, a halogen, and a fluorinated alkyl having C₁ to C₅; at least one of X and Y is selected from the group consisting of a halogen, and a fluorinated alkyl having C₁ to C₅; and M is at least one selected from the group consisting of Al, Sn, Ag, Fe, Bi, Mg, Zn, In, Ge, Pb, and Ti.)

A battery pack containing a plurality of battery modules, these modules comprising a plurality of individual battery units, these battery units comprising a plurality of bicells with opposing terminals. The battery modules are connected in series by use of a flexible circuit and by opposing positive and negative terminals of each battery unit. The terminals of each battery unit contain a region of apertures which allow the adhesive of the packaging material to seal more effectively, thereby eliminating or reducing the amount of leakage from an individual battery unit.

To provide a process for producing a lithium ion secondary battery which can have any arbitrary shape, such as thin shape, and yet exhibits high performance. In a method of fabricating a battery comprising a positive electrode 1, a negative electrode 4, and a separator 7, a binder resin solution mainly comprising polyvinylidene fluoride is applied to the separator 7, and the positive electrode 1 and the negative electrode 4 are laid thereon, followed by drying to form a battery laminate, which is then impregnated with an electrolytic solution.

Disclosed herein is a battery pack constructed such that a battery case, in which an electrode assembly is mounted, is made of a laminate sheet having high strength, side sealing parts of the battery case are formed in a specific shape, and a protection circuit module (PCM) is located in the inner space of at least one of the side sealing parts. The side sealing parts in themselves are used as a structure to decide the external shape of the battery pack, and, at the same time, are used as spaces for mounting the PCM therein. Consequently, it is possible to construct the battery pack without using additional pack sheathing members, to simplify the assembly process of the battery pack, and to manufacture the battery pack in a thinner and more compact structure with the reduced manufacturing costs. Furthermore, the PCM is located at either side of the battery cell while the PCM is spaced apart from electrode terminals. Consequently, the battery pack exhibits high safety against external impacts, such as dropping of the battery pack.

Disclosed is a cartridge-type lithium ion polymer battery pack including: at least two lithium ion polymer batteries in which adjacent electrode tabs are connected to each other so as to form a predetermined series circuit with a desired instrument; and an upper plate and a lower plate disposed at the top and the bottom of the whole lithium ion polymer batteries, respectively, and coupled to each other so that each lithium ion polymer battery is partially covered with them. Multiple layers of the battery packs are laminated and fixed with ease so as to conform to the electric power requirement for a desired instrument.

A closure assembly and rupturable vent seal adapted for use in an electrochemical battery cell is disclosed. The vent seal includes a series of peripheral projections that can be folded to insure proper sealing of the vent without wrinkles or overlapping folded portions. Methods of accomplishing the invention are also contemplated.

A method for improving the useful life of a thin film lithium-ion battery containing a solid electrolyte and an anode that expands on charging and long life batteries made by the method. The method includes providing a hermetic barrier package for the thin film battery that includes an anode expansion absorbing structure.

A heat insulation sheet (16) covers a temperature fuse (10) arranged on a sealing plate (23) of a rechargeable battery (2) so as to provide a shield from heat of resin that is filled in a gap between the rechargeable battery (2) and a circuit substrate (3) to form a primary mold (11) and to prevent destruction of the temperature fuse (10) caused by the heat.

An electrochemical cell, particularly an electrochemical cell having a container with a positive polarity. In one embodiment, the cell is a primary cell that includes an electrode assembly having a lithium negative electrode and a positive electrode, preferably comprising iron disulfide. The cell is provided with a spiral wound electrode assembly with a portion of the positive electrode contacting the container. The positive electrode current collector contacts the container in one embodiment. The negative electrode includes an electrically conductive member that electrically contacts a cover of the cell and provides the cover with a negative polarity. In a preferred embodiment, the electrically conductive member makes pressure contact with a portion of the cell cover. A method of manufacturing such a cell is also provided.