Pressure Bonding Device

The present invention provides a pressure bonding device including a base, a sealing cover, and a pressurizing assembly. The base is used to place a to-be-pressed member; the sealing cover is used to cooperate with the base to form a sealing space between the base and the sealing cover during pressure bonding operation; the pressurizing assembly is connected to the sealing cover, and the pressurizing assembly is used to apply pressure to a flexible medium in the sealing space to cause the to-be-pressed member to be pressed under the pressure of the flexible medium. The pressure bonding device can uniformly apply pressure to various positions of the to-be-pressed member, ensuring the uniformity of applying pressure on the to-be-pressed member and improving the pressure bonding effect and the performance of the battery.