A method for manufacturing a battery includes: accommodating a stacked electrode body, in which a separator that has an adhesive layer and an electrode plate are stacked and the electrode plate is bonded to the separator via the adhesive layer, in a case; injecting an electrolytic solution into the case; and reducing the adhesive strength between the electrode plate and the separator at the same time, or around the same time, as the injection of the electrolytic solution.

A separator for a lithium secondary battery comprising a porous polymer substrate and a porous coating layer on at least one surface of the porous polymer substrate. The separator has an ionic conductivity of 4.75×10.sup.−5 S/cm or more, and the porous coating layer comprises an interstitial volume and a macro pore having a larger diameter than the interstitial volume. A method for manufacturing the separator is also disclosed. Accordingly, the separator has significantly improved ionic conductivity over commercial separators.

A separator for a lithium secondary battery comprising a porous polymer substrate and a porous coating layer on at least one surface of the porous polymer substrate. The separator has an ionic conductivity of 4.75×10.sup.−5 S/cm or more, and the porous coating layer comprises an interstitial volume and a macro pore having a larger diameter than the interstitial volume. A method for manufacturing the separator is also disclosed. Accordingly, the separator has significantly improved ionic conductivity over commercial separators.

An ultrasonic inspection system determines whether or not a thermally conductive resin forming a thermally conductive resin layer is filled through a waveform change of an ultrasonic wave measured by transmitting the ultrasonic wave toward a portion of an edge of a bottom surface of a module frame from the outside.

A battery includes an anode having an alkali metal as the active material, a cathode having, for example, iron disulfide as the active material, and an increased electrolyte volume.

A battery (30) is disclosed which comprises: a housing (32) containing an electrolyte solution; a plurality of jelly roll electrode assemblies (10) arranged substantially in parallel with each other in contact with the electrolyte solution within the housing (32) thereby forming a single electrochemical system of the battery (30), each jelly roll electrode assembly (10) having a first end (10A) and an opposing second end (10B); and a current collector plate (20); wherein the current collector plate (20) is arranged to be shared among and in direct physical and electrical contact with the first ends (10A) of the plurality of jelly roll electrode assemblies (10).

The present disclosure provides a battery core assembly, a battery, a battery pack, and a vehicle. The battery core assembly includes an encapsulation film and an electrode core assembly encapsulated in the encapsulation film. The electrode core assembly includes an electrode core assembly body and two electrode lead-out members of opposite polarities electrically connected to the electrode core assembly body. The electrode core assembly body includes at least two electrode cores connected in parallel. Each of the electrode cores includes an electrode core body and two tabs of opposite polarities that are electrically connected to the electrode core body. The electrode core assembly body further includes a tab support. The two electrode lead-out members are respectively electrically connected to one of the tab supports located two sides of the electrode core assembly body in a first direction.

The present disclosure provides a battery core assembly, a battery, a battery pack, and a vehicle. The battery core assembly includes an encapsulation film and an electrode core assembly encapsulated in the encapsulation film. The electrode core assembly includes an electrode core assembly body and two electrode lead-out members of opposite polarities electrically connected to the electrode core assembly body. The electrode core assembly body includes at least two electrode cores connected in parallel. Each of the electrode cores includes an electrode core body and two tabs of opposite polarities that are electrically connected to the electrode core body. The electrode core assembly body further includes a tab support. The two electrode lead-out members are respectively electrically connected to one of the tab supports located two sides of the electrode core assembly body in a first direction.

There is provided a method of adjusting non-aqueous electrolytic solution achieving reduction in an amount of hydrofluoric acid included in the non-aqueous electrolytic solution and a method of producing a lithium-ion secondary battery with a reused electrode plate by producing a lithium-ion secondary battery having less IV resistance with a reused electrode plate. Nonaqueous electrolytic solution includes Li salt containing element fluorine. This non-aqueous electrolytic solution is brought into contact with a basic Li compound to form a pH-level-adjusted non-aqueous electrolytic solution which has been adjusted its pH level within a range of 6 to 8 inclusive.

There is provided a method of adjusting non-aqueous electrolytic solution achieving reduction in an amount of hydrofluoric acid included in the non-aqueous electrolytic solution and a method of producing a lithium-ion secondary battery with a reused electrode plate by producing a lithium-ion secondary battery having less IV resistance with a reused electrode plate. Nonaqueous electrolytic solution includes Li salt containing element fluorine. This non-aqueous electrolytic solution is brought into contact with a basic Li compound to form a pH-level-adjusted non-aqueous electrolytic solution which has been adjusted its pH level within a range of 6 to 8 inclusive.