Abstract: A battery cell includes a housing, an electric terminal disposed on the housing, and an electrode assembly accommodated in the housing. The electrode assembly includes a main body portion and a tab extending out of an end face of the main body portion and including a first connecting portion configured to be connected to the electrode terminal and a second connecting portion configured to be connected to the main body portion. Along a length direction of the end face, at least part of the first connecting portion exceeds the second connecting portion. As the first connecting portion exceeds the second connecting portion in the length direction of the end face, the connectable range of the first connecting portion in the length direction of the end face can be expanded, facilitating direct connection of the first connecting portion with the electrode terminal.

Abstract: An end cover assembly includes: an end cover with a through hole for injecting electrolyte and a first clamping portion, wherein the first clamping portion is disposed along a circumferential direction of the through hole and is located on one side of the end cover away from an interior of the battery cell; a sealing ring for sealing the through hole; and a pressure relief device covering at least part of the sealing ring and closing the through hole; wherein the pressure relief device includes a second clamping portion, and is rotatable such that when the pressure relief device is rotated to a first position, the second clamping portion is clamped with the first clamping portion; and when the pressure relief device is rotated to a second position, the second clamping portion is disengaged from the first clamping portion.

Abstract: The present disclosure provides a top cover assembly for a battery, a battery and a device using a battery as a power source. The top cover assembly includes: a cover plate body having a liquid injection hole; a mounting part configured to be connected with the cover plate body and arranged around the liquid injection hole; a sealing element configured to be connected with the mounting part, wherein the sealing element includes a first top wall and a first side wall connected to the periphery of the first top wall, the first top wall is configured to cover the liquid injection hole, and the first side wall is configured to be in press fit with the mounting part to achieve sealing of the liquid injection hole; and a fixing element configured to be connected with the cover plate body and to fix the sealing element to the mounting part.

Abstract: The present application relates to a secondary battery, a battery module and a device. The secondary battery includes a cap plate assembly; an electrode assembly, including a main body and a tab extending from the main body; an electrode terminal, arranged at the cap plate assembly to electrically connect with the tab; a first pressing-against member, arranged between the cap plate assembly and the main body, herein an accommodating space is formed between the first pressing-against member and the electrode terminal; a second pressing-against member, arranged between the cap plate assembly and the main body; herein a part of the tab, that passes between the first pressing-against member and the second pressing-against member and extends into the accommodating space, is connected to the electrode terminal, and the first pressing-against member and the second pressing-against member press against two opposite surfaces of the tab respectively.

Abstract: A battery cell, a battery and an electric device are disclosed. The battery cell includes a housing, an electrode assembly, a detection assembly and a protective assembly. The housing includes an accommodation cavity. The electrode assembly is accommodated in the accommodation cavity. The detection assembly is connected to the housing and is used to detect an operation state of the battery cell. The protective assembly protrudes from the housing and is arranged on a same side as the detection assembly so as to protect the detection assembly. The embodiments of the application can effectively improve safety and reliability of the battery cell.

Abstract: The present disclosure provides a battery cell, a battery and an electrical apparatus. The battery cell includes a housing comprising a first wall with a through hole; electrode terminal provided on the first wall, each electrode terminal having an end face facing the first wall, and at least a portion of the end face being opposite to the through hole; and a sealing element at least partially surrounding a peripheral side of the through hole, and at least a portion of the sealing element being connected between the end face and the first wall. The sealing element is provided with one of a boss and a groove, at least one of the electrode terminal or the first wall is provided with the other of the boss and the groove, and the boss is fitted with the groove.

Abstract: An end cap assembly, a battery cell, a battery, battery cell manufacturing equipment and method are provided, which belong to the technical field of batteries. The end cap assembly includes an end cap, an electrode terminal and a connector. The end cap is provided with an electrode lead-out hole which penetrates the end cap in a thickness direction of the end cap. The connector is configured to connect the end cap to fix the electrode terminal. The electrode terminal is provided opposite to the electrode lead-out hole, and a projection of the electrode terminal in the thickness direction does not overlap with a projection of the end cap in the thickness direction, thus a radial size of the electrode terminal is smaller, which reduces the space occupied by the electrode terminal, saves material and has better economy.

Abstract: Embodiments provide a battery, an electric device, and a method and a device for preparing battery cell, featuring a higher space utilization. The battery includes: a plurality of battery cells, where the plurality of battery cells are arranged in a first direction, a first region on an edge of a first surface of each of the plurality of battery cells is recessed to form a first recess, a first electrode terminal of each of the battery cells is protrusively provided on a second surface of the battery cell, the first surface and the second surface are perpendicular to the first direction, and the plurality of battery cells include a first battery cell and a second battery cell that are adjacent; and a first busbar configured to connect first electrode terminals of the adjacent first battery cell and second battery cell.

Abstract: This application provides a battery cell, a battery, and an electrical device. A battery cell, including a top cover assembly and an adapter component, where the top cover assembly includes a mounting hole, and the mounting hole penetrates the top cover assembly along a first direction. The adapter component includes a base portion and a connecting portion that protrudes beyond the base portion. The connecting portion is disposed in the mounting hole and spaced apart from the mounting hole. The top cover assembly includes the mounting hole that penetrates the top cover assembly along the first direction, and the mounting hole is configured to accommodate the adapter component. The adapter component is configured to connect an electrode assembly to an electrode terminal in the battery cell. The adapter component includes the base portion and the connecting portion that protrudes beyond the base portion.

Abstract: This application provides a battery cell, a battery, and an electrical device, and enhances safety of the battery cell by improving the structure of the battery cell. The battery cell includes: a housing, on which an opening is created; an electrode assembly, accommodated in the housing; an electrode terminal, disposed on a bottom wall of the housing and connected to a tab of the electrode assembly, where the bottom wall is opposite to the opening; and a cover plate, connected to the housing and configured to fit and cover the opening.

Abstract: The embodiments of the application provide a battery cell, a battery and an electric device. The battery cell includes a housing, an electrode assembly and a detection member. The housing includes an accommodation cavity. The electrode assembly is received in the accommodation cavity. The detection member includes a sensor and a connector, the sensor is connected to the housing by the connector, and the sensor is used to detect status information of the battery cell and generate a signal, and the connector is used to transmit the signal. The sensor can detect the status information of the battery cell in real time, so as to regulate the battery cell based on the status information of the battery cell, improve a cycling performance of the battery cell, reduce a safety risk and extend a cycle life of the battery cell.

Abstract: An end cover assembly comprises a first cover plate, a second cover plate, a first insulating member, and anti-rotation means, wherein the first cover plate is used to close a first case, the second cover plate is used to close a second case, and the second cover plate is provided opposite to the first cover plate along a first direction in order for the first case closed by the first cover plate and the second case closed by the second cover plate to be arranged along the first direction, the first insulating member is provided between the first cover plate and the second cover plate, and the anti-rotation means is provided between the first insulating member and the first cover plate and between the first insulating member and the second cover plate.

Abstract: This application discloses an end cover assembly, a battery cell, a battery, and an electric apparatus. The end cover assembly is applied to the battery cell, including an end cover and an electrode terminal. The end cover is provided with a lead-out hole. The electrode terminal is mounted on the end cover, a portion of the electrode terminal passes through the lead-out hole, and a bottom surface of the electrode terminal extends out of the lead-out hole and is used to be fixed to an adapting component of the battery cell by welding. According to the end cover assembly of this application, when the end cover assembly is applied to the battery cell and connected to the adapting component of the battery cell, the adapting component that facilitates removal of metal shavings can be used when the electrode terminal is fixed to the adapting component by welding.

Abstract: A battery cell, a battery and an electricity-consuming device are provided by the present application. The battery cell includes a casing, an electrode assembly, a detecting assembly and a protecting structure. The casing includes an accommodating chamber; the electrode assembly is accommodated in the accommodating chamber, the detecting assembly is connected to the casing and configured to detect a working condition of the battery cell; and the protecting structure covers at least a portion of a surface of the detecting assembly.

Abstract: A battery cell, a battery and an electricity-consuming device are provided by the present application. The battery cell includes a casing and at least one integrated circuit member. The casing includes an accommodating chamber. The integrated circuit member includes a detecting element that is configured to detect a working condition of the battery cell, and the integrated circuit member is arranged inside or outside the accommodating chamber.

Abstract: A battery cell includes a casing, an electrode assembly, a first insulating member and a second insulating member. The inner surface of a bottom wall of the casing is connected to the inner surface of a first side wall by a first arc transition surface; a first partition portion of the first insulating member separates the electrode assembly and the first side wall; the second insulating member separates the electrode assembly and the bottom wall; in the thickness direction of the second insulating member, the separator of the electrode assembly has a stacked part located between an electrode plate and the second insulating member; and the radius R1 of the first circular arc transition surface, the thickness a1 of the first partition portion, the thickness b of the stacked part and the thickness c of the second insulating member satisfy R1?(c+b)2+4(a1)2+[(a1)*(c+b)]1/2.

Abstract: This application provides an end cap, a battery cell, a battery, and an electrical device. The end cap includes a body portion and an edge portion. The edge portion is connected to the body portion and surrounds the body portion. The edge portion protrudes beyond the body portion along a first direction. The first direction is a thickness direction of the body portion. The edge portion includes a lap portion. The lap portion protrudes beyond the body portion along a second direction. The lap portion includes a first surface. The first surface is perpendicular to the first direction. The first surface is configured to lap a housing of the battery cell. The second direction is perpendicular to the first direction. The technical solutions of this application improve the sealing performance of the battery cell.

Abstract: Embodiments of the present application provide an end cover assembly of a battery cell, a battery cell, a battery and an electricity-consuming apparatus. The end cover assembly includes an end cover and a detecting assembly. The end cover is provided with a concave part on a side of the end cover away from an electrode assembly of the battery cell. The detecting assembly is configured to detect a state information of the battery cell, and at least a portion of the detecting assembly is accommodated in the concave part.

Abstract: Embodiments of the present application provide an end cover assembly of a battery cell, a battery cell, a battery and an electricity-consuming apparatus. The end cover assembly includes an end cover, a detecting assembly and an insulating member. The detecting assembly is arranged on the end cover and configured to detect a state information of the battery cell. The insulating member is attached to a surface of the end cover away from an electrode assembly of the battery cell, and provided with an avoiding structure which is configured to avoid at least a portion of the detecting assembly.

Abstract: A battery cell includes a shell, an electrode assembly, and a first insulating member. The shell has an opening and a bottom wall opposite to the opening. The electrode assembly is accommodated in the shell. The first insulating member is used for separating the electrode assembly and the bottom wall. The first insulating member is provided with a first through hole, and projections of the electrode assembly and the first through hole on the bottom wall partially overlap or do not overlap in a thickness direction of the bottom wall.