END COVER, BATTERY CELL, BATTERY, AND POWER-CONSUMING DEVICE

• Main Authors: LI, Quankun, CHEN, Wenwei, ZHOU, Wenlin, WANG, Peng
• Format: Patent
• Language: Chinese; English; French
• Published: 13.04.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present application discloses an end cover, a battery cell, a battery, and a power-consuming device. The end cover provided in embodiments of the present application comprises: a first concave portion sunken from the side of the end cover facing an electrode assembly along a direction facing away from the electrode assembly; a second concave portion sunken from the side of the end cover facing away from the electrode assembly of the battery cell along a direction facing the electrode assembly, a bottom wall of the second concave portion comprising a first part and a second part surrounding the outer side of the first part, and the first part and the bottom wall of the first concave portion being oppositely arranged along the thickness direction of the end cover; and a pressure relief portion formed between the first part and the bottom wall of the first concave portion, the pressure relief portion being actuated to discharge an internal pressure of the battery cell when the internal pressure reaches a thr