A battery comprises an anode, a cathode, and a polymer electrolyte disposed between the anode and the cathode. The polymer electrolyte can include an inert hydrophilic polymer matrix impregnated with an aqueous electrolyte. The hydrophilic polymer matrix can include a polar vinyl monomer, an initiator, and a cross-linker. A gassing inhibitor can be included in the polymer electrolyte to help avoid issues with overcharging of the electrodes.

A liquid reserve battery including: a collapsible storage unit having a collapsible cavity for storing a liquid electrolyte therein; and a battery cell in communication with an outlet of the collapsible storage unit, the battery cell having gaps dispersed therein. Wherein the collapsible storage unit comprises a plurality of triangular sidewalls; and the plurality of triangular sidewalls being configured to collapse in a longitudinal direction about a hinge disposed between adjacent sides of each of the plurality of triangular sidewalls.

A method for operating a battery with a hermetically sealed housing configured as a hardcase and containing at least one electrochemical cell based on an organic electrolyte is described. The method includes: opening the housing at a point configured to create a point of access to a housing interior so as to vent the at least one cell; and, after the opening, hermetically re-sealing the point of access to the housing interior. A battery which can be operated by this method is also described.

Provided is a lithium battery processing method including: a step for adding a deactivating agent to the interior of a lithium battery, the deactivating agent containing at least one of iodine and an iodinated compound; or a step for adding a deactivating agent to the interior of a lithium battery having a fluorine-containing electrolyte, the deactivating agent containing a quaternary ammonium compound.

Provided is an electrode assembly and a manufacturing method and apparatus therefor, a battery, and a power consuming device, the electrode assembly being used for a battery cell and the electrode assembly including: a first electrode plate and a second electrode plate that have opposite polarities, where the first electrode plate and the second electrode plate each include a main body portion and a tab projecting from the main body portion, and the first electrode plate and the second electrode plate are wound about a winding axis; and an end portion of the wound main body includes at least one conductive region and at least one liquid guiding region, where the tab is led out of the conductive region, is wound by at least one turn, and is used for electrical connection to a terminal of the battery cell.

An electrochemical device includes an electrolytic solution, an electrode assembly, and a housing accommodating the electrolytic solution and the electrode assembly. The electrode assembly includes a first electrode plate, a second electrode plate, and a separator disposed there between, which are stacked and wound. In a direction of a winding central axis, the electrochemical device includes a first end and a second end that are opposite to each other. The first electrode plate includes a first current collector and a first active material layer disposed on the first current collector. The first current collector includes a first part. In the direction of the winding central axis, the first part is located at an end of the first current collector and is closer to the first end than the second end. A porous layer is disposed on the first part.

A secondary battery comprises a case, an electrolyte solution, an electrode assembly, and a porous member. A contour surface of the electrode assembly includes a first region and a second region. At the first region, an electrode plate is exposed. At the second region, the electrode plate is not exposed. At least one of the first region and the second region includes a third region. The third region faces the bottom surface of the case. Relationships of “5.00×10.sup.−2<Vp/Ve<2.00×10.sup.−1”, “2.00×10.sup.−1<Sp1/Se1”, and “Sp2/Se2<1.00×10.sup.−1” are satisfied. Ve represents a volume of the electrode assembly. Vp represents a volume of the porous member. Se1 represents an area of the first region. Sp1 represents a contact area between the porous member and the first region. Se2 represents an area of the second region. Sp2 represents a contact area between the porous member and the second region.

The aspects of the present disclosure relate to a battery lid configured to be mounted on a housing of a battery cell to cover an opening therein. The battery lid is formed by a body enclosing a flow channel having at least one flow inlet and at least one flow outlet, the flow inlet and flow outlet being arranged in flow communication with the flow channel. The disclosed embodiments relate also to a battery cell assembly.

A secondary battery disclosed herein includes an electrode body, a case body having an opening that houses the electrode body, and a lid mounted at the opening of the case body. The lid includes a liquid injection port through which an electrolyte is injected, an insulation member mounted on an inner surface of the lid, and an insulation holder that is mounted on the insulation member and at least a portion of which is opposed to the liquid injection port at an interval. The insulation holder includes a liquid receiving portion disposed in a position opposed to the liquid injection port, and an electrode body protective portion disposed in a position closer to the electrode body than a position of the liquid receiving portion.

A system for watering an electrolyte or lead acid battery in which the cumulative amount of water added during each filling event is determined by detecting the amount of water passing from a supply hose to the battery. A fluid dispensing member, such as a direct fill link or nozzle, can be attached to and detached from a single point watering subsystem. A flow detector, such as a flow meter, in fluid communication with the fluid dispensing member can wirelessly output the cumulative water added to specific batteries to an interactive computer application, which can include a wireless component such as a smartphone or tablet communicating with a remotely located interactive database.