A method for recycling used cells such as saline cells, alkaline cells, button cells and used rechargeable batteries, includes the step of introducing the cells and/or rechargeable batteries as feedstock into a metal melting furnace, at the charging door thereof. The cells and/or rechargeable batteries are subjected to a compression operation in order to remove the electrolytes contained in the cells and/or rechargeable batteries, prior to introducing the cells and/or rechargeable batteries into the metal melting furnace.

The method can be used for recycling used cells and rechargeable batteries.

An electrochemical cell includes an annular electrode composite body; and an annular liquid-tight housing formed as a hollow cylinder and including an annular interior space, wherein the housing is arranged around a central aperture or recess, the housing has a height of 5 mm to 40 mm and an external diameter of 6 mm to 20 mm, and the annular electrode composite body is arranged in the annular interior space.

A miniature button rechargeable lithium battery structure assembly includes an upper housing, a lower housing and an apron, which relates to the technical field of electronic structure assembly. The upper housing is snap-fit into the lower housing, and a side wall of the upper housing and a side wall of the lower housing are sealed with the apron. The miniature button rechargeable lithium battery structure assembly solves the competing requirements between the explosion-proof structure and the sealed structure in the traditional technology. The problem is solved that when the explosion-proof performance is improved, the yield of the battery assembly is reduced, and the problem is solved that when the sealing performance is improved, the battery capacity is reduced.

Provided is a lithium secondary battery including a positive electrode layer composed of a cobalt-containing lithium complex oxide sintered body, a negative electrode layer composed of a titanium-containing sintered body, a ceramic separator interposed between the positive electrode layer and the negative electrode layer and containing MgO, an electrolytic solution with which the positive electrode layer, the negative electrode layer, and the ceramic separator are impregnated, and an exterior body including a closed space, the closed space accommodating the positive electrode layer, the negative electrode layer, the ceramic separator, and the electrolytic solution, wherein the positive electrode layer, the ceramic separator, and the negative electrode layer are bonded together, and the interface between the negative electrode layer and the ceramic separator has a larger roughness than the interface between the positive electrode layer and the ceramic separator.

The present disclosure includes a metal housing, a cell arranged in the metal housing, and a cover plate arranged on the metal housing. The cell includes a cathode and an anode. The cover plate and the metal housing have a same polarity and are integrated by laser welding to realize a more reliable sealing of the battery housing. A cap is arranged at and protruded from an outer side of the cover plate. An insulating member is arranged between the cover plate and the cap to prevent a short between the cover plate and the cap. One of the cathode and the anode is electrically connected to the metal housing, and another of the cathode and the anode is electrically connected to the cap.

Provided is a coin-shaped lithium secondary battery including a positive electrode plate which is a lithium complex oxide sintered plate; a negative electrode plate which is a titanium-containing sintered plate; a separator interposed between the positive electrode plate and the negative electrode plate; an electrolytic solution with which the positive electrode plate, the negative electrode, and the separator are impregnated; and an exterior body having a closed space, the closed space accommodating the positive electrode plate, the negative electrode plate, the separator, and the electrolytic solution, the lithium secondary battery having a thickness of 0.7 to 1.6 mm and a diameter of 10 to 20 mm.

The invention provides an automated batch sample preparation method for button battery, comprising the following steps: preparing an electrolyte and elements of different specifications, presetting an injection amount of a liquid injection component, scanning and recording the identification information of the elements by a scanning component, grabbing the elements onto a sealing component, injecting the electrolyte into the elements on the sealing component, sealing the elements as a button battery by the sealing component, removing the button battery, then repeat the above steps. The automated batch sample preparation method for button battery provided by the invention has the advantages of high automation degree, simple operation, high-precision assembly and high efficiency. The injection amount can be adjusted and controlled, and button batteries with different specifications can be produced in batch. The information recorded by the scanning component can facilitate the optimization of the process.

A rechargeable battery includes: an electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode; a case having an opening and housing the electrode assembly; and a cap assembly sealing the opening of the case, and the cap assembly includes: a cap plate bonded to the case and covering the opening; a terminal plate bonded to the cap plate; and a thermal fusion member between the terminal plate and the cap plate and thermally fused with the terminal plate and the cap plate.

A button cell includes a metal cell cup, a cell top, a first electrode, and a second electrode. The first electrode includes a first current collector having an active material-free region, and the second electrode includes a second current collector. The button cell further includes a first metal foil conductor having a first portion attached to the active material-free region of the first current collector and an insulator applied to a rear side of the first metal foil conductor along a second portion of the first metal foil conductor. The first electrode and the second electrode form, along with a first separator layer and a second separator layer, an electrode assembly that is wound in a spiral to form an electrode winding. The second portion of the first metal foil conductor is welded to one of the metal cell cup or the cell top.

The present disclosure discloses a button cell, and a method for welding electrode tabs to a pole shell of the button cell. The button cell includes the pole shell and an electric core. The pole shell consists of an anode shell and a cathode shell. The button cell further comprises at least one metal sheet. A cathode tab and/or an anode tab of the electric core is/are welded to the metal sheet, and the metal sheet is then welded to the cathode shell and/or the anode shell. The button cell manufactured by the invention has a complete surface, and can avoid phenomena such as electrolyte leakage and surface bulging caused by the rupture of the polar shell.