Abstract: The present application provides a tab plate, including a coating area and an empty foil area located on one side of the coating area. The empty foil area includes a cutting area and a reserved area; the cutting area forms a plurality of tabs by cutting; the ends of the plurality of tabs close to the coating area are connected together through the reserved area; a partition line is formed at the connection position between the cutting area and the reserved area; each tab includes a first side and a second side which are opposite to each other, and both the first side and the second side intersect with the partition line; an angle a is formed between the first side and the partition line, the angle a is located within the tab, and the angle a is an acute angle.

Abstract: An EP4 antagonist represented by formula I, which specifically comprises a crystal form thereof, a pharmaceutically acceptable salt or crystal form thereof, a preparation method therefor, a composition containing same, and a medical use of a related compound.

Abstract: Provided is a tab plate, including a coating area and an empty foil area located on one side of the coating area. A boundary line is formed at the connection position between the empty foil area and the coating area, the empty foil area is cut to form a plurality of tabs of quadrangular structures, and the four sides of each tab include a first side, a second side and a third side; the third side is located in the empty foil area and is close to the boundary line; and the first side is arranged opposite to the second side, both the first side and the second side intersect with the third side, and an included angle a is formed between the first side and the third side, with the included angle a being an acute angle. Further provided in the present application is a wound battery.

Abstract: Provided is a battery housing. The battery housing has an opening at both ends in a length direction, respectively, and the battery housing is provided with at least one cooling unit extending along the length direction. The cooling unit is provided with a coolant channel for coolant circulation, and the at least one cooling unit divides the internal space of the battery housing into at least two accommodating cavities spaced apart from top to bottom in a height direction. Each accommodating cavity is used for accommodating a battery cell. By providing the cooling unit in the battery housing, the heat generated by the battery cell can be dispelled immediately, thereby quickly and effectively solving the heat dissipation problem of the battery cell during charging and discharging. Also provided are a lithium-ion secondary battery and an electric vehicle.

Abstract: Provided is a lithium-ion secondary battery, comprising a housing and at least two cells packaged in the housing. The housing is provided with at least one cooling unit extending along a length direction of the housing. The cooling unit is provided with a coolant channel for coolant circulation, the cooling unit divides the internal space of the housing into at least two accommodating cavities spaced apart in a thickness direction of the housing. A battery cell is arranged in each accommodating cavity, and the cooling units are in thermal conduction contact with the cells in adjacent accommodating cavities. By providing the cooling unit in the housing, the heat generated by the battery cell can be conducted in time, thereby quickly and effectively solving the heat dissipation problem of the battery cell during charging and discharging. Also provided is an electric vehicle.

Abstract: A battery cover plate and a lithium-ion secondary battery. An electrode terminal is provided on the battery cover plate, an explosion-proof groove is also provided on the battery cover plate, and the explosion-proof groove surrounds or is set partially around the electrode terminal. The battery cover plate can burst or explode along the explosion-proof groove in the case of battery abnormality, and the battery cover plate can drive the electrode terminal to move together when the battery cover plate bursts or explodes, and the movement of the electrode terminal pulls a tab, so that the tab or the junction of the tab can be partially broken or completely broken, thereby weakening or cutting off the electric connection between the electrode terminal and a battery cell.