A multi-layer protection element for thermal insulation of a battery, a battery with such a protection element and the use of the protection element to filter gases escaping in case of fire and to prevent the escape of flames and/or sparks are proposed. The highly gas-permeable protection element comprises a carrier layer of a fabric and a compressible fibre layer in the form of a sewn non-woven fabric. The protection element is arranged between at least one battery cell and a housing wall of the battery and covers an outlet of the housing wall on the inside. This enables good pressure compensation in the event of fire and/or a short circuit, wherein escaping gases are filtered in particular through the fibre layer and the escape of flames or sparks through the outlet is prevented.

A multi-layer protection element for thermal insulation of a battery, a battery with such a protection element and the use of the protection element to filter gases escaping in case of fire and to prevent the escape of flames and/or sparks are proposed. The highly gas-permeable protection element comprises a carrier layer of a fabric and a compressible fibre layer in the form of a sewn non-woven fabric. The protection element is arranged between at least one battery cell and a housing wall of the battery and covers an outlet of the housing wall on the inside. This enables good pressure compensation in the event of fire and/or a short circuit, wherein escaping gases are filtered in particular through the fibre layer and the escape of flames or sparks through the outlet is prevented.

Provided are a lower plastic member and a power battery. The lower plastic member includes a body protruding towards a jelly roll of the power battery to form a protruding portion. The protruding portion has at least one ventilation channel defined thereon. A gas in the power battery flows outside through the ventilation channel. The body has a liquid injection hole and a flow guide shroud provided thereon. The flow guide shroud is arranged at an opening on a side of the liquid injection hole facing towards the jelly roll. The flow guide shroud includes a shielding plate and a plurality of connection posts. The shielding plate has an inclined surface facing towards the body and inclined towards a side away from the body in a radially outward direction of the shielding plate.

Provided are a lower plastic member and a power battery. The lower plastic member includes a body protruding towards a jelly roll of the power battery to form a protruding portion. The protruding portion has at least one ventilation channel defined thereon. A gas in the power battery flows outside through the ventilation channel. The body has a liquid injection hole and a flow guide shroud provided thereon. The flow guide shroud is arranged at an opening on a side of the liquid injection hole facing towards the jelly roll. The flow guide shroud includes a shielding plate and a plurality of connection posts. The shielding plate has an inclined surface facing towards the body and inclined towards a side away from the body in a radially outward direction of the shielding plate.

A battery pack includes: a battery cell; one or more shoulder screws having a head portion, a screw portion, and an intermediate portion between the head portion and the screw portion, the intermediate portion being larger than an outer diameter of the screw portion and smaller than an outer diameter of the head portion; and an exterior case including an upper case and a lower case fastened to each other with the one or the plurality of shoulder screws. A first elastic member is disposed in a compressed state at a contact portion between the upper case and the lower case, and a second elastic member is disposed in a compressed state between the head portion and the upper case.

A battery pack includes: a battery cell; one or more shoulder screws having a head portion, a screw portion, and an intermediate portion between the head portion and the screw portion, the intermediate portion being larger than an outer diameter of the screw portion and smaller than an outer diameter of the head portion; and an exterior case including an upper case and a lower case fastened to each other with the one or the plurality of shoulder screws. A first elastic member is disposed in a compressed state at a contact portion between the upper case and the lower case, and a second elastic member is disposed in a compressed state between the head portion and the upper case.

A safety valve for a housing, for releasing a housing opening of the housing if a defined burst pressure is reached or exceeded in the housing. It is provided here that in a base body of the safety valve including an elastomer, a receptacle groove that is continuous in the circumferential direction is formed for the formfitting accommodation of a retaining web of the housing. The disclosure furthermore relates to an energy accumulator for storing electric energy.

The present application discloses a battery and a related apparatus, production method and production device therefor. The battery includes: a battery cell, the battery cell including a pressure relief mechanism configured to be capable of being actuated when an internal pressure or temperature of the battery cell reaches a threshold, to relieve the internal pressure; an attachment component adapted to be attached to the battery cell by an adhesive; and an isolation component configured to be capable of preventing the adhesive from being applied between the attachment component and the pressure relief mechanism. By providing the isolation component, it is possible to prevent the adhesive from being applied between the attachment component and the pressure relief mechanism in an effective manner in a process of battery production. Meanwhile, application efficiency and accuracy of the adhesive could be improved, thereby improving production efficiency of the battery.

The present application discloses a battery and a related apparatus, production method and production device therefor. The battery includes: a battery cell, the battery cell including a pressure relief mechanism configured to be capable of being actuated when an internal pressure or temperature of the battery cell reaches a threshold, to relieve the internal pressure; an attachment component adapted to be attached to the battery cell by an adhesive; and an isolation component configured to be capable of preventing the adhesive from being applied between the attachment component and the pressure relief mechanism. By providing the isolation component, it is possible to prevent the adhesive from being applied between the attachment component and the pressure relief mechanism in an effective manner in a process of battery production. Meanwhile, application efficiency and accuracy of the adhesive could be improved, thereby improving production efficiency of the battery.

The present invention is a method for manufacturing a secondary battery. An electrode assembly and an electrolyte are accommodated into a body of a battery case. The body of the battery case has an accommodation part and a gas pocket part, and a passage that extends from the accommodation part to the outside discharges an internal gas from the accommodation part through the gas pocket part. The battery case is seated in a seating step on a support block, which has an inclined part on a side surface thereof, to support the battery case. The body is pressed to discharge a gas accommodated in the accommodation part through the gas pocket part in the battery case. This method allows easy discharging of internal gas while reducing discharge of the electrolyte with the gas.