A nonaqueous electrolyte secondary battery includes a positive electrode including a positive electrode mix layer, a negative electrode including a negative electrode mix layer, and a nonaqueous electrolyte containing a nonaqueous solvent. A surface of the negative electrode mix layer is provided with grooves. The nonaqueous electrolyte contains 10 volume percent or more of a fluorinated solvent with respect to the volume of the nonaqueous solvent and has a viscosity (25 C.) of 3.50 mPa.Math.s or more as measured with a differential pressure viscometer.

A secondary battery includes an electrode body including a positive electrode plate and a negative electrode plate; a battery case containing the electrode body; a terminal attached to the battery case; a conductive member having an opening adjacent to the electrode body; a deformation plate that seals the opening, and a current collector. The positive electrode plate and a positive electrode terminal are electrically connected to each other via a first positive electrode current collector, the deformation plate, and the conductive member. The first positive electrode current collector has a through-hole. The deformation plate is disposed to face the through-hole. A portion of the first positive electrode current collector distant from the through-hole is welded to the deformation plate to form a weld.

A unit cell for a secondary battery includes a central electrode having a first polarity, a pair of separators respectively laminated on both surfaces the central electrode, and an upper electrode and a lower electrode respectively laminated on the pair of separators and having a second polarity, wherein the separator has a patterned adhesive force.

A sealed cell according to the present invention includes an angular case 50 that accommodates an electrode body. The angular case 50 includes a concave case main body 52, having an opening, and a sealing member 54. The case main body 52 has a flat surface 52a opposed to the sealing member 54, with the electrode body interposed therebetween, and a side wall 52b rising from the flat surface 52a. The peripheral edge portion of the opening provided in the case main body 52 and the sealing member 54 are joined to each other by seal welding. Concave and convex portions including concave portions 56a, 156a recessed toward the inside of the case and convex portions 56b flush with the flat surface 52a are formed on at least one side 58a portion of end sides of the flat surface 52a. Electrode terminals 80, 82 are disposed on bottom surfaces of the concave portions 56a, 156a.

A lithium slurry battery system is provided. The system includes a lithium slurry battery and a maintenance and regeneration equipment for the battery. The battery includes: a case, a cell core accommodated in the case, and a cover butting device. The case is provided with a cover and a case body. The cover butting device is arranged on the cover and is provided with a first cover port and a second cover port. The maintenance and regeneration equipment includes: a gas storage tank for storing gas, a liquid storage tank for storing liquid; a gas recovery storage tank for storing gas recovered from the lithium slurry battery; a liquid recovery storage tank for storing liquid recovered from the lithium slurry battery; and an equipment butting device provided with a first equipment port and a second equipment port.

A battery has an electrode body which has an outer periphery and includes positive and negative electrodes with a separator disposed there between in a stacking direction. The battery further include an exterior body having a shape other than a substantially rectangular parallelepiped or cuboidal shape. The electrode body and an electrolytic solution are housed in the exterior body. The exterior body has at least first, second and third inner surfaces with the first and third inner surfaces being located on opposite sides of the second inner surface. The second inner surface is larger in area than the first and second inner surfaces. A liquid injection port is located in the exterior body and extends through the second inner surface. Each of the first, second and third inner surfaces faces and is spaced from a respective first, second and third section of the outer periphery of the electrode body by a respective gap so as define first, second and third regions, respectively, each of which has a respective volume. The volume the second region is larger than the volumes of the first and third regions and is capable of temporarily holding a volume of the electrolytic solution injected into the outer case via the liquid injection port.

One variation of a battery unit includes: a substrate including silicon and defining a cell, wherein the cell includes a base encompassed by a continuous wall and a set of posts extending normal to the base; an electrolyte material coating vertical surfaces of each post, in the set of posts, and vertical surfaces of the continuous wall in the cell; a cathode material filling the cell over the electrolyte material, between posts in the set of posts, and between the set of posts and the continuous wall; a seal extending along a top of the continuous wall; and a cathode current collector bonded to the seal, electrically coupled to the cathode material, and cooperating with the substrate to enclose the cell to form a single-cell battery.

The present invention provides a lithium-ion battery, including: a housing and a separator located inside the housing, where the separator separates internal space of the housing into a plurality of accommodation cavities, battery core sets are disposed inside the accommodation cavities, the battery core sets each include at least one pole shank, and the battery core sets are connected in series; and at least one separator is provided with a liquid injection hole, and the liquid injection hole is used to connect two adjacent accommodation cavities on two sides of the separator; and a block mechanism, where the block mechanism is located inside the housing, the block mechanism enables the liquid injection hole to be in a predetermined state, and the predetermined state includes an open state and a closed state. The battery provided in the present invention ensures isolation and safety of each battery core set while facilitating liquid injection.

Disclosed is a battery pack, which includes at least one battery module and a pack case for packaging the at least one battery module, and the battery pack includes a case base configured to support the at least one battery module, a case body coupled to the case base to accommodate the at least one battery module, and a case cover coupled to the case body to cover the case body, wherein the case base and the case body are sealed to each other and the case body and the case cover are sealed to each other, respectively, by means of a sealant member along a rim thereof.

An electrochemical-type power supply source is provided with: an electrochemical stack generating electric power, in the presence, internally, of electrolytic fluid, provided with a number of distinct groups of galvanic cells and of a corresponding number of electrolyte inlet pipes for introducing electrolyte into respective groups of galvanic cells and with electrolyte outlet pipes for extracting electrolyte from respective groups of galvanic cells; a main tank, fluidically coupled to the electrochemical stack and containing electrolytic fluid; and a recirculation system, defining a circulation path of the electrolytic fluid between the main tank and the electrochemical stack. A valve system that can be coupled to the electrolyte inlet and/or outlet pipes and operatively controllable to modify hydraulic and electric characteristics of the circulation path, in response to a power delivery condition by the power supply source.