A secondary battery module includes a nonaqueous-electrolyte secondary battery and an elastic body, wherein a negative electrode constituting the nonaqueous-electrolyte secondary battery includes a negative-electrode active material layer, the negative-electrode active material layer includes a first layer, and a second layer that is formed on the first layer and has a higher compression modulus than the first layer, a separator constituting the nonaqueous-electrolyte secondary battery has a lower compression modulus than the first layer, the elastic body has a lower compression modulus than the separator, the graphite particles contained in the first layer have a BET specific surface area of 1 to 2.5 m.sup.2/g, and the content of Si particles in the first layer is 6 mass % to 13 mass % relative to the total amount of the negative-electrode active material layer.

A rechargeable battery according to an exemplary embodiment of the present invention includes: an electrode assembly; a casing which accommodates the electrode assembly and has an opening; a cap assembly which is coupled through the opening and seals the casing; a spacer which is positioned between the electrode assembly and the casing and has multiple holes; and a vent member which is formed on a bottom surface of the casing which is positioned opposite to the opening.

A solid-state battery having two or more stacked battery elements, each battery element including one or more battery constituent units in which a positive electrode layer and a negative electrode layer oppose each other with a solid electrolyte layer between the positive electrode layer and the negative electrode layer; and an insulating layer interposed between adjacent battery elements of the two or more stacked battery elements, wherein at least one end portion of the insulating layer has a thickness greater than a thickness of a central portion of the insulating layer in a sectional view thereof.

An electrochemical apparatus includes a barrier, where the barrier is hermetically connected to an outer package, standalone chambers are formed at two sides of the barrier respectively, each chamber encapsulates an electrode assembly and an electrolyte, electrode assemblies in adjacent chambers are connected in series by tabs, and the barrier includes an ion insulating layer, water permeability of the barrier is less than or equal to 10.sup.−3 g/(day.Math.m.sup.2.Math.Pa)/3 mm, and sealing thickness T and sealing width W of a seal between the barrier and the outer package satisfy 0.01≤T/W≤0.05. Based on the electrochemical apparatus, not only high voltage output can be achieved and a temperature rise of the electrochemical apparatus can be reduced, but also water resistance and environmental stability of the electrochemical apparatus can be improved.

Embodiments of the present application provide an electrode assembly, a battery cell, a battery, and a method and a device for manufacturing an electrode assembly, which belong to the technical field of batteries. Where, the electrode assembly includes a first electrode plate, a second electrode plate, and a support member. The first electrode plate and the second electrode plate are wound in a winding direction to form a winding structure, and the winding structure includes a bending area. At least a part of the support member is bent and arranged in the bending area, and the support member is configured to provide a support force to a part of the first electrode plate and/or the second electrode plate located at an outer side of the support member.

A battery module including a battery cell stack, which includes a plurality of battery cells stacked in a stacking direction, a housing for the battery cell stack, a busbar that is connected with the electrode lead of the battery cell, a busbar frame that faces the front surface or rear surface of the battery cell stack and has the busbar mounted on a surface thereof, an end plate that is coupled with the housing and covers the busbar frame, and a cooling member that is located in a separation space between the busbar frame and the end plate. The cooling member includes a thermal conductive resin.

A rechargeable battery according to an exemplary embodiment of the present invention includes: an electrode assembly; a casing which accommodates the electrode assembly and has an opening; a cap assembly which is coupled through the opening and seals the casing; a spacer which is positioned between the electrode assembly and the casing and has multiple holes; and a vent member which is formed on a bottom surface of the casing which is positioned opposite to the opening.

The present disclosure relates to an electrode assembly for an all-solid-state battery with improved safety, and more particularly, to an electrode assembly of a new structure designed to prevent the damage of a solid electrolyte layer caused by a step formed in a negative electrode layer due to changes in thickness of the negative electrode layer, such as an increase or decrease in thickness at part of the negative electrode layer, during charging/discharging. The electrode assembly is characterized by comprising a protective layer having an opening, interposed between the negative electrode and the solid electrolyte layer.

A secondary battery module includes a nonaqueous-electrolyte secondary battery and an elastic body, wherein a negative electrode constituting the nonaqueous-electrolyte secondary battery includes a negative-electrode active material layer, the negative-electrode active material layer includes a first layer, and a second layer that is formed on the first layer and has a higher compression modulus than the first layer, a separator constituting the nonaqueous-electrolyte secondary battery has a lower compression modulus than the first layer, the elastic body has a lower compression modulus than the separator, the graphite particles contained in the first layer have a BET specific surface area of 1 to 2.5 m.sup.2/g, and the content of Si particles in the first layer is 6 mass % to 13 mass % relative to the total amount of the negative-electrode active material layer.

A secondary battery module according to the present embodiment includes a nonaqueous-electrolyte secondary battery and an elastic body, wherein a negative electrode constituting the nonaqueous-electrolyte secondary battery includes a negative-electrode current collector and a negative-electrode active material layer, the negative-electrode active material layer includes a first layer formed on the negative-electrode current collector, and a second layer that is formed on the first layer and has a higher compression modulus than the first layer, a separator constituting the nonaqueous-electrolyte secondary battery has a lower compression modulus than the first layer, the elastic body has a lower compression modulus than the separator, a graphite particles contained in the first layer have a BET specific surface area of 1 to 2.5 m.sup.2/g, and the first layer 52a contains 0.01 mass % to 0.4 mass % of a carbon nanotube having one to five graphene sheets.