The present application discloses a battery cell, a battery and a power consumption apparatus. The battery cell may include: a housing filled with an electrolyte inside; at least one core assembly arranged in the housing and at least one closed liquid bladder holding the electrolyte, the liquid bladder being arranged in the housing, and at least being provided corresponding to a side wall of the core assembly; at least one weakened structure being provided on the liquid bladder. Under a condition that a pressure in the liquid bladder reaches a threshold value, the electrolyte in the liquid bladder may break through the weakened structure and flow out of the liquid bladder.

The present application discloses a battery cell, a battery and a power consumption apparatus. The battery cell may include: a housing filled with an electrolyte inside; at least one core assembly arranged in the housing and at least one closed liquid bladder holding the electrolyte, the liquid bladder being arranged in the housing, and at least being provided corresponding to a side wall of the core assembly; at least one weakened structure being provided on the liquid bladder. Under a condition that a pressure in the liquid bladder reaches a threshold value, the electrolyte in the liquid bladder may break through the weakened structure and flow out of the liquid bladder.

A battery cell, comprising a first electrode plate, an separator and a second electrode plate, the first electrode plate, the separator and the second electrode plate are stacked in sequence along a first direction, the battery cell also includes a first side surface and a second side surface which are disposed along the first direction and adjacent to each other, the first side surface and the second side surface are connected through a first connection region, the battery cell further includes an adhesive film, and the adhesive film is disposed in the first connection region, and is bonded to the first electrode plate, the separator and the second electrode plate, thereby improving safety of the battery cell.

In order to create an electrochemical cell, comprising a housing, an electrochemical element arranged in an interior of the housing, and at least one cell terminal that comprises a terminal feed-through, which extends through a through-opening of the housing, which electrochemical cell is of simple construction and requires a low production expenditure but still reliably limits the short circuit current that arises in the case of a non-regular operating state, it is proposed that the electrochemical cell comprises an electrically conductive sealing element, which seals the through-opening of the housing and electrically conductively connects the cell terminal to the housing.

In order to create an electrochemical cell, comprising a housing, an electrochemical element arranged in an interior of the housing, and at least one cell terminal that comprises a terminal feed-through, which extends through a through-opening of the housing, which electrochemical cell is of simple construction and requires a low production expenditure but still reliably limits the short circuit current that arises in the case of a non-regular operating state, it is proposed that the electrochemical cell comprises an electrically conductive sealing element, which seals the through-opening of the housing and electrically conductively connects the cell terminal to the housing.

Provided are a secondary battery and a battery pack including the secondary battery. A sealing plate has a positive electrode terminal attachment hole. A positive electrode terminal penetrates the positive electrode terminal attachment hole. An external conductive member is connected to a portion of the positive electrode terminal located on the battery outer side with respect to the sealing plate. The conduction path between a positive electrode plate and the positive electrode terminal is provided with a current interrupting mechanism. A first insulating member made of resin is disposed between the sealing plate and the positive electrode terminal. A second insulating member having higher thermal resistance than the first insulating member is disposed between the external conductive member and the sealing plate.

A battery unit includes a housing assembly, an electrode assembly, a conductive plate, and a feedthrough assembly. The feedthrough assembly includes a first washer, a second washer, a conductive terminal, and a rivet. The housing assembly is provided with an opening for accommodating the feedthrough assembly. The first washer and the second washer are respectively disposed on an outer surface and an inner surface of the housing assembly. The conductive terminal is disposed on a side of the second washer facing away from the first washer. The rivet passes through the first washer, the opening, the second washer, and the conductive terminal, is electrically connected to the conductive terminal, and compresses the first washer and the second washer to seal the opening.

A battery unit includes a housing assembly, an electrode assembly, a conductive plate, and a feedthrough assembly. The feedthrough assembly includes a first washer, a second washer, a conductive terminal, and a rivet. The housing assembly is provided with an opening for accommodating the feedthrough assembly. The first washer and the second washer are respectively disposed on an outer surface and an inner surface of the housing assembly. The conductive terminal is disposed on a side of the second washer facing away from the first washer. The rivet passes through the first washer, the opening, the second washer, and the conductive terminal, is electrically connected to the conductive terminal, and compresses the first washer and the second washer to seal the opening.

A secondary battery includes an electrode assembly including a first electrode plate, a separator, and a second electrode plate, a lower case in which the electrode assembly is accommodated and electrode tabs are provided on sidewalls opposing each other, an upper case coupled to the lower case, and an outer casing disposed to surround the lower case and the upper case. The electrode assembly is provided with a first uncoated electrode portion extending from the first electrode plate and a second uncoated electrode portion extending from the second electrode plate, and the first and second uncoated electrode portions are bent and connected to the electrode tab of the lower case.

A secondary battery includes an electrode assembly including a first electrode plate, a separator, and a second electrode plate, a lower case in which the electrode assembly is accommodated and electrode tabs are provided on sidewalls opposing each other, an upper case coupled to the lower case, and an outer casing disposed to surround the lower case and the upper case. The electrode assembly is provided with a first uncoated electrode portion extending from the first electrode plate and a second uncoated electrode portion extending from the second electrode plate, and the first and second uncoated electrode portions are bent and connected to the electrode tab of the lower case.