A secondary battery according to one embodiment of the present disclosure includes an electrode assembly impregnated with an electrolyte solution; a battery case that houses the electrode assembly and the electrolyte solution; a cap assembly coupled to the battery case; and a gasket positioned between the battery case and the cap assembly, wherein the gasket includes an indented part formed on the inside, and wherein the indented part is spaced apart from the cap assembly while facing the cap assembly.

The present application provides a button cell and its manufacturing method and electronic equipment. The button cell includes a housing, an electrode assembly and a covering member, an accommodating cavity being provided in the housing, the electrode assembly being located in the accommodating cavity, the housing having a liquid injection hole for injecting electrolyte into the accommodating cavity; an outer surface of the housing having a recessed portion that is recessed towards an inner side of the accommodating cavity, the recessed portion being located at a orifice of the liquid injection hole and communicated with the liquid injection hole; and the covering member being welded to the outer side of the housing to cover the recessed portion and the liquid injection hole. The button cell and its manufacturing method and electronic equipment of the present.

The present application provides a button cell and its manufacturing method and electronic equipment. The button cell includes a housing, an electrode assembly and a covering member, an accommodating cavity being provided in the housing, the electrode assembly being located in the accommodating cavity, the housing having a liquid injection hole for injecting electrolyte into the accommodating cavity; an outer surface of the housing having a recessed portion that is recessed towards an inner side of the accommodating cavity, the recessed portion being located at a orifice of the liquid injection hole and communicated with the liquid injection hole; and the covering member being welded to the outer side of the housing to cover the recessed portion and the liquid injection hole. The button cell and its manufacturing method and electronic equipment of the present.

Systems for suppressing adverse exothermic reactions in an energy storage container. One energy storage system includes a container configured to support a plurality of battery cells; a plurality of battery cells disposed inside and supported by the container; an agent supply port attached to the container; and a tube disposed inside the container and having a closed end and an open end. The open end of the tube is in fluid communication with the agent supply port. The tube comprises fusible portions which are designed to melt or soften at a temperature which is lower than the melting or softening temperature of another portion of the tube. In response to melting or softening of the fusible portions of the tube, pressurized exothermic reaction-suppressing agent is distributed inside the container via the tube.

Systems for suppressing adverse exothermic reactions in an energy storage container. One energy storage system includes a container configured to support a plurality of battery cells; a plurality of battery cells disposed inside and supported by the container; an agent supply port attached to the container; and a tube disposed inside the container and having a closed end and an open end. The open end of the tube is in fluid communication with the agent supply port. The tube comprises fusible portions which are designed to melt or soften at a temperature which is lower than the melting or softening temperature of another portion of the tube. In response to melting or softening of the fusible portions of the tube, pressurized exothermic reaction-suppressing agent is distributed inside the container via the tube.

Embodiments of the application provide an end cover assembly, a battery cell, a battery and a method and device for manufacturing the battery cell. The end cover assembly includes an end cover, an insulating part, a blocking part and a separating part. The end cover is provided with an injection hole. The insulating part is configured to be arranged on a side of the end cover in the thickness direction and is provided with a through hole. The blocking part is provided with a liquid outlet and is configured to change a flow direction of a fluid medium passing through the injection hole and the through hole, and the fluid medium after changing the flow direction entering inside of the battery cell through the liquid outlet. The separating part is configured to separate a tab from the end cover.

Embodiments of the application provide an end cover assembly, a battery cell, a battery and a method and device for manufacturing the battery cell. The end cover assembly includes an end cover, an insulating part, a blocking part and a separating part. The end cover is provided with an injection hole. The insulating part is configured to be arranged on a side of the end cover in the thickness direction and is provided with a through hole. The blocking part is provided with a liquid outlet and is configured to change a flow direction of a fluid medium passing through the injection hole and the through hole, and the fluid medium after changing the flow direction entering inside of the battery cell through the liquid outlet. The separating part is configured to separate a tab from the end cover.

Disclosed herein are a battery cell housing, a battery cell, a battery, and an electric device. The battery cell housing defines a cavity configured to accommodate an electrode assembly, and the battery cell housing includes a first housing and a second housing. The first housing is electrically connected to a first tab of the electrode assembly. The second housing is fixed to the first housing in an insulated manner. The second housing is electrically connected to a second tab of the electrode assembly and the second tab is different from the first tab in polarity. The first housing includes a bulge electrically connected to the first tab, and the bulge extends in a direction approaching the second housing. Therefore, there is no need to provide a hole in the battery cell housing, thereby rendering the battery cell housing more integral.

Disclosed herein are a battery cell housing, a battery cell, a battery, and an electric device. The battery cell housing defines a cavity configured to accommodate an electrode assembly, and the battery cell housing includes a first housing and a second housing. The first housing is electrically connected to a first tab of the electrode assembly. The second housing is fixed to the first housing in an insulated manner. The second housing is electrically connected to a second tab of the electrode assembly and the second tab is different from the first tab in polarity. The first housing includes a bulge electrically connected to the first tab, and the bulge extends in a direction approaching the second housing. Therefore, there is no need to provide a hole in the battery cell housing, thereby rendering the battery cell housing more integral.

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.